Control method and controller of instant hot water machine, instant hot water machine, medium

Abstract

The embodiments of the present invention provide a control method and controller for an instant hot water machine, an instant hot water machine, and a medium. By adopting a multi-mode heating method, when the heater power meets the requirement of producing full-speed hot water, water is discharged at full speed, and when it does not meet the requirement, water is discharged at a reduced speed, so that the equipment can achieve the highest efficiency of discharging hot water while having any range of adjustable water temperature. In addition, the water temperature produced by heating is accurate, and the temperature will not be too high or too low, which reduces the probability of the heater being burned due to excessive temperature and water vapor splashing, and improves the safety of drinking water.

Description

[Technical field]

[0001] The present invention relates to the field of control technology, and in particular to a control method and controller of an instant hot water machine, an instant hot water machine and a medium. [Background technology]

[0002] Instant hot water machine adopts pipeline heating, which can realize water boiling as soon as it flows through, and can continuously provide constant temperature water, basically realizing "instant use, no use, no power consumption". With the demand of consumers, portable instant hot water machine can better meet the demand of different groups of people for drinking water. In the prior art, portable instant hot water machine currently mostly adopts intermittent heating or thyristor power adjustment heating. In the actual application process, the water outlet flow rate of instant hot water machine is constant. At this time, the heating power of the heater is adjusted by comparing the actual outlet water temperature with the target temperature. However, it is easy to have a large deviation between the actual outlet water temperature and the target outlet water temperature. For example, the outlet water speed is too low. For example, when the target outlet water temperature is set to 60℃, the actual outlet water temperature may have reached 100℃. At this time, the hot water may have boiled, and a large amount of steam will be generated, and the water vapor will splash, and even burn the heater; for example, the outlet water speed is too high. For example, when the target outlet water temperature is set to 60℃, the actual outlet water will be room temperature water, and the water temperature is too low. In summary, the water temperature of the portable instant hot water machine in the prior art is not accurate. If the temperature is too high, water vapor will splash and burn the heater. If the water temperature is too low, it is unsafe to drink. [Summary of the invention]

[0003] In view of this, the embodiment of the present invention provides a control method and controller of an instant hot water machine, an instant hot water machine, and a medium. By dynamically adjusting the power of the heater and the flow rate of the water outlet, the instant hot water machine can adopt a multi-mode heating method. For example, when the heater power meets the requirement of full-speed hot water outlet, the water outlet is at full speed, and when it does not meet the requirement, the water outlet is slowed down. This allows the device to achieve the highest hot water outlet efficiency while having any adjustable water temperature range. In addition, the water temperature produced by heating is accurate, and there will be no phenomenon of over-high or under-low temperature, which reduces the probability of over-high temperature and water vapor splashing to burn the heater, and improves the safety of drinking water.

[0004] As a first aspect of the present invention, an embodiment of the present invention provides a control method for an instant hot water machine, comprising:

[0005] Obtaining the water temperature of the water inlet pipe of the instant hot water machine water pump;

[0006] Calculating the first power required for the water pump to operate at a preset maximum flow rate according to the inlet water temperature and the preset water temperature;

[0007] Determining whether the first power is less than a reference power, the reference power being equal to the rated power of the heater multiplied by a first value, the first value being less than 1;

[0008] When the first power is greater than or equal to the reference power, controlling the water pump to operate at a second preset flow rate, and controlling the heater to operate at the reference power; and

[0009] The flow rate of the water pump and the heating power of the heater are increased synchronously.

[0010] In one embodiment of the present invention, controlling the water pump to operate at the second preset flow rate and controlling the heater to operate at the reference power further comprises:

[0011] Controlling the heater to operate at the reference power for a first preset time, and controlling the water pump to operate at the second preset flow rate for the first preset time;

[0012] Wherein, the synchronously increasing the flow rate of the water pump and the heating power of the heater further comprises:

[0013] When the first preset time period ends, the flow rate of the water pump and the heating power of the heater are increased synchronously.

[0014] In one embodiment of the present invention, the synchronously increasing the flow rate of the water pump and the heating power of the heater further comprises:

[0015] Synchronously increasing the heating power of the heater and the flow rate of the water pump, and acquiring the second power of the heater and the first flow rate of the water pump in real time;

[0016] determining whether the second power of the heater is equal to the rated power, and determining whether the first flow rate of the water pump is equal to the preset maximum flow rate; and

[0017] When the second power of the heater is equal to the rated power of the heater,

[0018] Alternatively, when the first flow rate of the water pump is equal to the preset maximum flow rate, the heater is controlled to operate at the second power and the water pump is controlled to operate at the first flow rate.

[0019] In one embodiment of the present invention, the synchronously increasing the power of the heater and the flow rate of the water pump further comprises:

[0020] gradually increasing the power of the heater at a first speed; and

[0021] gradually increasing the flow rate of the water pump at a second speed;

[0022] Wherein, the ratio of the first speed to the second speed is constant.

[0023] In one embodiment of the present invention, when the second power of the heater is equal to the rated power, or the first flow rate of the water pump is equal to the preset maximum flow rate, controlling the heater to operate at the second power and controlling the water pump to operate at the first flow rate further comprises:

[0024] When the second power of the heater is equal to the rated power and the first flow rate of the water pump is less than the preset maximum flow rate, the heater is controlled to operate at the second power, the second power is equal to the rated power, and the water pump is controlled to operate at the first flow rate; or

[0025] When the second power of the heater is less than the rated power and the first flow rate of the water pump is equal to the preset maximum flow rate, the heater is controlled to operate at the second power and the water pump is controlled to operate at the first flow rate, and the first flow rate is equal to the preset maximum flow rate; or

[0026] When the second power of the heater is equal to the rated power and the first flow rate of the water pump is equal to the preset maximum flow rate, the heater is controlled to operate at the second power, the second power is equal to the rated power, and the water pump is controlled to operate at the first flow rate, the first flow rate is equal to the preset maximum flow rate.

[0027] In one embodiment of the present invention, when the second power of the heater is less than the rated power and the first flow rate of the water pump is less than the preset maximum flow rate, the power of the heater and the flow rate of the water pump are gradually increased.

[0028] In one embodiment of the present invention, the control method of the instant hot water machine further comprises:

[0029] When the first power is less than the reference power, the water pump is controlled to operate at a first preset flow rate, and the heater is controlled to operate at the first power.

[0030] In an embodiment of the present invention, the first preset flow rate is equal to the preset maximum flow rate of the water pump.

[0031] In an embodiment of the present invention, the first value ranges from 75% to 90%.

[0032] In an embodiment of the present invention, the first value is 85%.

[0033] As a second aspect of the present invention, an embodiment of the present invention provides a controller for an instant hot water machine, comprising:

[0034] A temperature acquisition unit, used to acquire the water temperature of the water inlet pipe of the instant hot water machine water pump;

[0035] a calculation unit, configured to calculate a first power required by the water pump at a preset maximum flow rate according to the inlet water temperature and a preset water temperature;

[0036] a judging unit, configured to judge whether the first power is less than a reference power, the reference power being equal to a rated power of a heater of the instant water heater multiplied by a first value, the first value being less than 1;

[0037] a control unit, configured to control the water pump to operate at a second preset flow rate and control the heater to operate at the reference power when the first power is greater than or equal to the reference power; and

[0038] The flow rate of the water pump and the heating power of the heater are increased synchronously.

[0039] As a third aspect of the present invention, an embodiment of the present invention provides an instant hot water machine, comprising:

[0040] A water pump, the water pump comprising a water pump inlet pipe and a water pump outlet pipe;

[0041] A heater assembly, the heater assembly comprising a heater, a heater outlet pipe, a first thermosensitive sensor and a second thermosensitive sensor, wherein the heater is used to heat water, the first thermosensitive sensor is used to measure the outlet water temperature in the heater outlet pipe, and the second thermosensitive sensor is used to measure the inlet water temperature in the water pump inlet pipe;

[0042] A controller is used to control the water pump and the heater according to the control method of the instant water heater described above.

[0043] As a fourth aspect of the present invention, an embodiment of the present invention provides a non-temporary computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a controller, implements the aforementioned control method for the instant water heater.

[0044] A control method and controller for an instant hot water machine and an instant hot water machine provided by an embodiment of the present invention can dynamically adjust the power of the heater and the flow rate of the water output, so that the instant hot water machine can adopt a multi-mode heating method. For example, when the heater power meets the requirement of outputting full-speed hot water, water is output at full speed, and when it does not meet the requirement, the water output is slowed down. This allows the device to achieve the highest hot water output efficiency while having any range of adjustable water temperature. In addition, the water temperature output by heating is accurate, and the temperature will not be too high or too low, which reduces the probability of the heater being burned due to excessive temperature and water vapor splashing, thereby improving the safety of drinking water.

Brief Description of the Drawings

[0045] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0046] Figure 1 A schematic flow chart of a control method for an instant water heater provided by an embodiment of the present invention;

[0047] Figure 2 A schematic flow chart of a control method for an instant water heater provided by another embodiment of the present invention;

[0048] Figure 3 A schematic flow chart of a control method for an instant water heater provided by another embodiment of the present invention;

[0049] Figure 4 A schematic diagram of the structure of a controller of an instant water heater provided by an embodiment of the present invention;

[0050] Figure 5 Shown is a cross-sectional schematic diagram of an instant water heater provided by an embodiment of the present invention;

[0051] Figure 6 The figure shows a schematic diagram of a water circuit structure of an instant water heater provided by an embodiment of the present invention;

[0052] Figure 7 Shown is a schematic structural diagram of a heater assembly in an instant water heater provided by an embodiment of the present invention. [Specific implementation method]

[0053] In order to better understand the technical solution of the present invention, the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0054] It should be clear that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0056] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0057] As a first aspect of the present invention, Figure 1 FIG. 1 is a flow chart of a control method of an instant water heater provided by an embodiment of the present invention. Figure 1 As shown, the control method of the instant hot water machine includes the following steps:

[0058] Step S101: obtaining a water boiling instruction input by a user;

[0059] Step S102: obtaining the water temperature of the water inlet pipe of the water pump of the instant hot water machine;

[0060] Step S103: Calculate the maximum flow rate V of the water pump according to the inlet water temperature and the preset water temperature. max The first power P1 required under the condition of the preset water temperature is the preset outlet water temperature in the heater outlet pipe connected to the heater in the instant hot water machine, and the preset maximum flow rate is the maximum flow rate of the water pump. Step S103 is to estimate the first power P1 of the heater when the actual outlet water temperature in the heater outlet pipe is not greater than the preset outlet water temperature in the heater outlet pipe under the maximum flow rate of the water pump according to the inlet water temperature and the outlet water temperature in the preset heater outlet pipe.

[0061] Step S104: Determine whether the first power P1 is less than the reference power P 参考 , reference power P 参考 Equal to the rated power P of the instant water heater 额定 multiplied by a first value, wherein the first value is less than 1; Step S104 is to predict the maximum flow rate V of the water pump according to the calculated first power P1. max When working under low temperature, will the actual water temperature of the heater outlet pipe be too low?

[0062] Preferably, the first value is in the range of 75% to 90%. More preferably, the first value is 85%.

[0063] When the result of the judgment in step S104 is that the first power P1 is less than the reference power P 参考 When the water pump is at the preset maximum flow rate V max When working under the condition that the outlet water temperature of the heater outlet pipe is not too low, step S105 is executed.

[0064] Step S105: controlling the water pump to operate at a first preset flow rate, and controlling the heater to operate at a first power P1;

[0065] Preferably, the first preset flow rate is the preset maximum flow rate V of the water pump. max .

[0066] That is, when the first power P1 is less than the reference power P 参考 When the reference power P 参考 Equal to the rated power P of the heater 额定 Multiply by the first value, the first value is less than 1, that is, the preset water temperature of the outlet water in the outlet water pipe of the heater can be reached even with a small power, indicating that the inlet water temperature in the inlet pipe of the hot water machine water pump is relatively high. Therefore, in this case, the water pump is at the preset maximum flow rate V max When the heater works at the first power P1, the actual water temperature of the outlet water pipe of the heater can also reach the preset water temperature, which solves the problem of too low water temperature when discharging water at full speed in the prior art, resulting in drinking water safety.

[0067] When the result of the judgment in step S104 is that the first power P1 is greater than or equal to the reference power P 参考 When the water temperature in the water inlet pipe of the instant hot water machine is relatively low, if the water pump is at the preset maximum flow rate V max When working under the condition of the heater, it is predicted that the outlet water temperature of the heater outlet pipe may be too low, so step S106-step S107 is executed, that is,

[0068] Step S106: Control the water pump to operate at a second preset flow rate V2, and control the heater to operate at a reference power P 参考 The second preset flow rate V2 is less than the preset maximum flow rate V max ;

[0069] Step S107: synchronously increase the flow rate of the water pump and the heating power of the heater.

[0070] That is, when the first power P1 is greater than or equal to the reference power P 参考 The pump will not be able to flow at the preset maximum flow rate V max Working under this condition, the heater is controlled at the reference power P 参考 The water pump is controlled to work at the second preset flow rate V2. Since the second preset flow rate is less than the preset maximum flow rate V max Therefore, the actual water temperature of the heater's water outlet pipe will not be too low, and the actual water temperature of the heater's water outlet pipe will not exceed the preset water temperature of the heater's water outlet pipe by too much, that is, the water temperature of the heater's water outlet pipe will not be too high, reducing the probability of burning the heater due to water vapor splashing due to excessive temperature.

[0071] In one embodiment of the present invention, Figure 2 As shown, step S106 further includes:

[0072] Step S1061: Control the heater to a reference power P 参考 The water pump is controlled to work at a second preset flow rate V2 for a first preset time, wherein the second preset flow rate V2 is less than a preset maximum flow rate V of the water pump. max .

[0073] That is, when the first power P1 is greater than or equal to the reference power P 参考 The pump will not be able to flow at the preset maximum flow rate V max If the heater is working under the reference power P 参考 (i.e. rated power P 额定 The pump is controlled to work at a second preset flow rate V2 for a first preset time. Since the second preset flow rate V2 is less than the preset maximum flow rate V max Therefore, the heater is at the reference power P 参考 The water pump works under the condition of lowering the flow rate of the water pump, so the actual outlet water temperature of the heater outlet pipe will not be too low. However, if the second preset flow rate V2 is too low, the actual outlet water temperature of the heater outlet pipe will not exceed the preset outlet water temperature of the heater outlet pipe by too much, that is, the water temperature of the heater outlet pipe is too high, increasing the probability of water vapor splashing and burning the heater. Therefore, after step S1061, step S107 further includes:

[0074] Step S1071: After the first preset time period, the power of the heater and the flow rate of the water pump are increased synchronously, and the second power P2 of the heater and the first flow rate V1 of the water pump are obtained in real time; gradually increasing the power of the heater can ensure that the actual water outlet temperature of the heater outlet pipe will not be too low, and gradually increasing the flow rate of the water pump can ensure that the actual water outlet temperature of the heater outlet pipe will not be too high.

[0075] Preferably, the first preset time length can be 0 to 5 seconds. When the first preset time length is 0 seconds, the reference power P is immediately executed. 参考 As the starting point, the heater power is gradually increased; and the second preset flow rate V2 is taken as the starting point, the flow rate of the water pump is gradually increased. When the first preset time is greater than 0 seconds, the heater is firstly made to run at the reference power P 参考 The water pump works for a first preset time at a second preset flow rate V2 for a first preset time, and then after the first preset time, the power of the heater and the flow rate of the water pump are gradually increased, so that the heater and the water pump have buffer time.

[0076] Step S1072: Determine whether the second power P2 of the heater is equal to the rated power P of the heater. 额定 , or determine whether the first flow rate V1 of the water pump is equal to the preset maximum flow rate V of the water pump max ;

[0077] In step S1072, when the second power P2 of the heater is less than the rated power P of the heater, 额定 , and the first flow rate V1 of the water pump is less than the preset maximum flow rate V max When the heater power and the water pump flow rate continue to be increased synchronously, that is, step S1071 is continued.

[0078] In step S1072, when the second power P2 of the heater is equal to the rated power P of the heater, 额定 , or the first flow rate V1 of the water pump is equal to the preset maximum flow rate V max When the second power P2 of the heater and the first flow rate V1 of the water pump reach the maximum, step S1073 is executed, that is,

[0079] Step S1073: Control the heater to operate at the second power P2 and the water pump to operate at the first flow rate V1.

[0080] Immediately stop increasing the heater power and the water pump flow rate, while ensuring that the actual outlet water temperature of the heater outlet pipe is not too low, further prevent the actual outlet water temperature of the heater outlet pipe from exceeding the preset outlet water temperature of the heater outlet pipe by too much, and reduce the probability of burning the heater due to water vapor splashing due to over-high temperature. In addition, synchronously increase the heating power of the heater and the flow rate of the water pump until either of them reaches the maximum and then stop increasing immediately, which can shorten the heating time of the instant water heater.

[0081] To sum up, the control method of an instant hot water machine provided by an embodiment of the present invention can adopt a variety of heating modes by dynamically adjusting the power of the heater and the flow rate of the water output. When the heater power meets the requirement of outputting full-speed hot water, water is output at full speed. When it does not meet the requirement, the water output is slowed down, so that the equipment can achieve the highest efficiency of outputting hot water. In addition, the temperature of the heated water is accurate, and the temperature will not be too high or too low, which reduces the probability of excessive temperature and water vapor splashing to burn the heater, thereby improving the safety of drinking water.

[0082] In one embodiment of the present invention, Figure 3 As shown, step S1071 (after the first preset time period ends, gradually increase the power of the heater and the flow rate of the water pump, and obtain the second power P2 of the heater and the first flow rate V1 of the water pump in real time) specifically includes:

[0083] Step S10711: gradually increasing the power of the heater at a first speed, and acquiring a second power P2 of the heater in real time; and

[0084] Step S10712: gradually increase the flow rate of the water pump at the second speed, and obtain the first flow rate V1 of the water pump in real time; wherein the ratio of the first speed to the second speed is constant, and when the heating power of the heater and the flow rate of the water pump are increased synchronously, no matter how the first speed and the second speed change, the actual outlet water temperature of the heater outlet pipe can still be kept constant.

[0085] Preferably, the first speed increases gradually, and the second speed increases gradually.

[0086] The flow rate of the water pump is gradually increased at a first speed, and the power of the heater is gradually increased at a second speed, so that the power change of the heater and the flow rate change of the water pump are increased in the form of a curve, so that when full-speed hot water is not satisfied, the equipment can achieve the highest hot water flow efficiency and have any range of adjustable water temperature.

[0087] In one embodiment of the present invention, step S1074 (controlling the heater to operate at the second power P2 and the water pump to operate at the first flow rate V1) specifically includes:

[0088] When the second power P2 of the heater is equal to the rated power P 额定 , and the first flow rate V1 of the water pump is less than the preset maximum flow rate V max When the heater is controlled to work at the second power, the second power is equal to the rated power P 额定 , that is, control the heater to rated power P 额定 The water pump is controlled to work at a first flow rate V1, at which the first flow rate is less than a preset maximum flow rate V max ;or

[0089] When the second power P2 of the heater is less than the rated power P 额定 , the first flow rate V1 of the water pump is equal to the preset maximum flow rate V max When the heater is controlled to work at the second power P2, the second power is less than the rated power P 额定 , control the water pump to work at the first flow rate, at this time, the first flow rate is equal to the preset maximum flow rate V max , that is, control the water pump to preset the maximum flow rate V max work; or

[0090] When the second power P2 of the heater is equal to the rated power P 额定 , the first flow rate V1 of the water pump is equal to the preset maximum flow rate V max When the heater is controlled to work at the second power, the second power is equal to the rated power P 额定 , control the water pump to work at the first flow rate, at this time the first flow rate is equal to the preset maximum flow rate V max , that is, control the heater to rated power P 额定Work, control the water pump to preset maximum flow rate V max Work.

[0091] As another aspect of the present invention, Figure 4 FIG. 1 is a schematic diagram of a controller of an instant water heater provided by an embodiment of the present invention. Figure 4 As shown, the controller of the instant hot water machine includes:

[0092] The temperature acquisition unit 100 is used to acquire the water temperature of the water inlet pipe of the water pump of the instant hot water machine;

[0093] A calculation unit 300, configured to calculate a first power required by the water pump at a preset maximum flow rate according to an inlet water temperature and a preset water temperature;

[0094] The judging unit 400 is used to judge whether the first power is less than the reference power P 参考 , where the reference power P 参考 is equal to the rated power of the heater of the instant water heater multiplied by a first value, and the first value is less than 1;

[0095] The control unit 600, when the first power is greater than or equal to the reference power P 参考 When the water pump is controlled to work at the second preset flow rate, the heater is controlled to work at the reference power P 参考 work; and simultaneously increase the flow rate of the water pump and the heating power of the heater.

[0096] A controller for an instant water machine provided by an embodiment of the present invention can dynamically adjust the power of the heater and the flow rate of water output, so that the instant water machine can adopt multiple heating modes. When the heater power meets the requirement of outputting full-speed hot water, water is output at full speed. When it does not meet the requirement, water output is slowed down. This allows the device to achieve the highest hot water output efficiency while having any adjustable water temperature range. In addition, the water temperature output by heating is accurate without the phenomenon of overtemperature or overtemperature, thereby reducing the probability of overtemperature and water vapor splashing to burn the heater and improving the safety of drinking water.

[0097] As a third aspect of the present invention, Figure 5 FIG. 1 is a schematic diagram of the structure of an instant water heater provided by an embodiment of the present invention. Figure 5 As shown, the instant hot water machine comprises:

[0098] Housing 10;

[0099] The water pump 6 is arranged in the housing 10, wherein Figure 6 The water circuit diagram of the instant hot water machine is shown in FIG. Figure 5 As shown, the water pump 6 includes a water pump inlet pipe 61 and a water pump outlet pipe 62;

[0100] The heater assembly 5, wherein Figure 7 The diagram shows the structure of the heating component of the instant water heater. Figure 7 As shown, the heater assembly 5 includes a heater 51, a heater outlet pipe 54 ( Figure 6 ), a first thermosensitive sensor 52 and a second thermosensitive sensor 53, wherein the heater 51 is used to heat the water in the water pump 6, the first thermosensitive sensor 52 is used to measure the outlet water temperature in the heater outlet pipe 62, and the second thermosensitive sensor 53 is used to measure the outlet water temperature in the water pump inlet pipe 61;

[0101] The controller 4 is electrically connected to the water pump 6 and the heater 51 respectively, and is used to control the working states of the water pump 6 and the heater 51 according to the control method of the instant water heater described above.

[0102] During the operation of the instant hot water machine, water enters the water pump 6 from the water pump inlet pipe 61, and the second thermosensitive sensor 53 measures the water temperature of the water inlet pipe 61 of the water pump, and transmits the measured water temperature to the controller 4. At this time, the controller 4 calculates the maximum flow rate V of the water pump according to the water temperature of the water inlet and the preset water temperature. max The first power P1 required by the load is determined, and whether the first power P1 is less than the reference power P 参考 , when P1 is less than P 参考 When the controller 4 controls the heater 51 to work at the first power P1, the water pump 6 to work at the preset maximum flow rate V max When the first power P1 is greater than or equal to the reference power P 参考 When the controller 4 controls the heater to use the reference power P 参考 The water pump is controlled to work at a second preset flow rate V2, wherein the second preset flow rate V2 is less than the preset maximum flow rate V of the water pump. max .

[0103] The controller 4 controls the heater to use the reference power P 参考 After the water pump 6 starts to work and controls the water pump to work at the second preset flow rate V2, the controller 4 gradually increases the power of the heater 51 and the flow rate of the water pump 6, and obtains the second power P2 of the heater 51 and the first flow rate V1 of the water pump 6 in real time; and determines whether the second power P2 of the heater 51 is equal to the rated power P of the heater 51. 额定 , or determine whether the first flow rate V1 of the water pump 6 is equal to the preset maximum flow rate V of the water pump 6 max ;

[0104] When the second power P2 of the heater 51 is less than the rated power P 额定 , and the first flow rate V1 of the water pump 6 is less than the preset maximum flow rate V max , the controller 4 continues to gradually increase the power of the heater 51 and the flow rate of the water pump 6.

[0105] When the second power P2 of the heater 51 is equal to the rated power P 额定 , or the first flow rate V1 of the water pump 6 is equal to the preset maximum flow rate V of the water pump 6 max When, that is, when any one of the second power P2 of the heater 51 and the first flow rate V1 of the water pump 6 reaches the maximum, the controller 4 controls the heater 51 to operate at the second power P2 and controls the water pump 6 to operate at the first flow rate V1.

[0106] An instant hot water machine provided by an embodiment of the present invention can adopt a variety of heating modes by dynamically adjusting the power of the heater and the flow rate of the water output. When the heater power meets the requirement of outputting full-speed hot water, water is output at full speed. When it does not meet the requirement, the water output is slowed down. This allows the device to achieve the highest hot water output efficiency while having any adjustable water temperature range. In addition, the water temperature output by heating is accurate without the phenomenon of overtemperature or overlow temperature, thereby reducing the probability of overtemperature and water vapor splashing to burn the heater and improving the safety of drinking water.

[0107] The embodiment of the present application also provides a non-temporary computer-readable storage medium on which a computer program is stored. When the above computer program is executed by a processor, the control method of the instant water heater provided in the embodiment of the present application can be implemented.

[0108] The above-mentioned non-temporary computer-readable storage medium can adopt any combination of one or more computer-readable media. The computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. The computer-readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples (non-exhaustive list) of computer-readable storage media include: an electrical connection with one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (Read Only Memory; hereinafter referred to as: ROM), an erasable programmable read-only memory (ErasableProgrammable Read Only Memory; hereinafter referred to as: EPROM) or flash memory, optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above. In this document, a computer-readable storage medium can be any tangible medium containing or storing a program, which can be used by an instruction execution system, device or device or used in combination with it.

[0109] Computer-readable signal media may include a data signal propagated in baseband or as part of a carrier wave, which carries a computer-readable program code. Such propagated data signals may take a variety of forms, including, but not limited to, electromagnetic signals, optical signals, or any suitable combination of the above. Computer-readable signal media may also be any computer-readable medium other than a computer-readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0110] Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

[0111] The computer program code for performing the operation of the present application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages, such as Java, Smalltalk, C++, and conventional procedural programming languages, such as "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as an independent software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer can be connected to the user's computer through any type of network, including a local area network (Local Area Network; hereinafter referred to as: LAN) or a wide area network (Wide Area Network; hereinafter referred to as: WAN), or can be connected to an external computer (for example, using an Internet service provider to connect through the Internet).

[0112] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A control method for an instant hot water machine, characterized in that: include: Obtaining the water temperature of the water inlet pipe of the water pump in the instant hot water machine; Calculating the first power required by the heater when the water pump operates at a preset maximum flow rate according to the inlet water temperature and the preset water temperature; Determining whether the first power is less than a reference power, the reference power being equal to the rated power of the heater multiplied by a first value, the first value being less than 1; When the first power is greater than or equal to the reference power, controlling the water pump to operate at a second preset flow rate, and controlling the heater to operate at the reference power; as well as The flow rate of the water pump and the heating power of the heater are increased synchronously.

2. The control method of the instant hot water machine according to claim 1, characterized in that: The synchronously increasing the flow rate of the water pump and the heating power of the heater further comprises: Synchronously increasing the heating power of the heater and the flow rate of the water pump, and acquiring the second power of the heater and the first flow rate of the water pump in real time; determining whether the second power of the heater is equal to the rated power, and determining whether the first flow rate of the water pump is equal to the preset maximum flow rate; When the second power of the heater is equal to the rated power, or the first flow rate of the water pump is equal to the preset maximum flow rate, the heater is controlled to operate at the second power and the water pump is controlled to operate at the first flow rate.

3. The control method of the instant hot water machine according to claim 2, characterized in that: The synchronously increasing the power of the heater and the flow rate of the water pump further comprises: gradually increasing the power of the heater at a first speed; and gradually increasing the flow rate of the water pump at a second speed; Wherein, the ratio of the first speed to the second speed is constant.

4. The control method of the instant hot water machine according to claim 2, characterized in that: When the second power of the heater is equal to the rated power, or the first flow rate of the water pump is equal to the preset maximum flow rate, controlling the heater to operate at the second power and controlling the water pump to operate at the first flow rate further comprises: When the second power of the heater is equal to the rated power and the first flow rate of the water pump is less than the preset maximum flow rate, the heater is controlled to operate at the second power, the second power is equal to the rated power, and the water pump is controlled to operate at the first flow rate; or When the second power of the heater is less than the rated power, and the first flow rate of the water pump is equal to the preset maximum flow rate, the heater is controlled to operate at the second power, and the water pump is controlled to operate at the first flow rate, and the first flow rate is equal to the preset maximum flow rate; or When the second power of the heater is equal to the rated power and the first flow rate of the water pump is equal to the preset maximum flow rate, the heater is controlled to operate at the second power, the second power is equal to the rated power, and the water pump is controlled to operate at the first flow rate, the first flow rate is equal to the preset maximum flow rate.

5. The control method of the instant water heater according to claim 2, characterized in that: The step of controlling the water pump to operate at a second preset flow rate and controlling the heater to operate at the reference power further comprises: Controlling the heater to operate at the reference power for a first preset time, and controlling the water pump to operate at the second preset flow rate for the first preset time; Wherein, the synchronously increasing the flow rate of the water pump and the heating power of the heater further comprises: When the first preset time period ends, the flow rate of the water pump and the heating power of the heater are increased synchronously.

6. The control method of instant water heater according to claim 1, characterized in that: Further including: When the first power is less than the reference power, the water pump is controlled to operate at a first preset flow rate, and the heater is controlled to operate at the first power.

7. The control method of the instant hot water machine according to claim 6, characterized in that: The first preset flow rate is equal to the preset maximum flow rate of the water pump.

8. The control method of instant water heater according to claim 1, characterized in that: The first value ranges from 75% to 90%.

9. The control method of the instant water heater according to claim 8, characterized in that: The first value is 85%.

10. A controller for an instant water heater, characterized in that: include: A temperature acquisition unit, used to acquire the water temperature of the water inlet pipe of the instant hot water machine water pump; a calculation unit, configured to calculate a first power required by the water pump at a preset maximum flow rate according to the inlet water temperature and a preset water temperature; a judging unit, configured to judge whether the first power is less than a reference power, the reference power being equal to a rated power of a heater of the instant water heater multiplied by a first value, the first value being less than 1; a control unit, configured to control the water pump to operate at a second preset flow rate and control the heater to operate at the reference power when the first power is greater than or equal to the reference power; as well as The flow rate of the water pump and the heating power of the heater are increased synchronously.

11. An instant hot water machine, characterized in that: include: A water pump, the water pump comprising a water pump inlet pipe and a water pump outlet pipe; A heater assembly, the heater assembly comprising a heater, a heater outlet pipe, a first thermosensitive sensor and a second thermosensitive sensor, wherein the heater is used to heat water, the first thermosensitive sensor is used to measure the outlet water temperature in the heater outlet pipe, and the second thermosensitive sensor is used to measure the inlet water temperature in the water pump inlet pipe; A controller, used for controlling the water pump and the heater according to the control method of the instant water heater according to any one of claims 1 to 9.

12. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by the controller, the control method of the instant water heater as described in any one of claims 1 to 9 is implemented.

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