Instantaneous water heater, preheating method, preheating device and storage medium thereof

Abstract

This invention discloses an instant hot water dispenser and its preheating method, preheating device, and storage medium. The method includes: obtaining a target temperature rise value and a target preheating time for preheating residual water in the instant heating pipe to a target temperature; and preheating the residual water according to a power reduction method within the target preheating time until the temperature rise value of the residual water reaches the target temperature rise value. The preheating method of this invention can achieve a high preheating temperature while avoiding the problem of boiling water causing splashing, thus improving the user experience and avoiding usage risks.

Description

Technical Field

[0001] This invention relates to the field of water dispenser technology, and more particularly to a preheating method for an instant hot water dispenser, a computer-readable storage medium, an instant hot water dispenser, and a preheating device for an instant hot water dispenser. Background Technology

[0002] Instant heating technology offers the following advantages when applied to water dispensers: energy saving, instant heating, no need for long-term heating and heat preservation of hot water inside the machine, reducing energy loss; no need for internal hot water storage, allowing for a smaller product size and high space adaptability; no need for internal water storage tanks and related heating detection elements, reducing product costs; users can set the water temperature and flow rate as needed, and the internal temperature control module and volume calculation module quickly and accurately reach the target temperature by heating and adjusting the water flow rate to meet the user's water needs.

[0003] Many instant hot water dispensers have a preheating function. When the user presses the hot water dispensing button, the heating element briefly heats the water (usually for about 2 seconds), the water pump does not start, and no water is dispensed immediately. Once the remaining water in the heating element is heated to the highest possible temperature, the water pump starts working and water is dispensed. This ensures that the water is initially at a higher temperature than room temperature, improving the user experience. However, the heating power of instant heating pipes is generally very high. Typical instant hot water dispensers on the market have a heating power of 2000W or even higher. The water volume inside the instant heating pipe is generally very small, at the level of a few milliliters. If preheated at full power, it only takes about 4 seconds to preheat the remaining water in the instant heating pipe from 30℃ to 90℃. The temperature rise is extremely fast. When the water pump starts to work and dispense water after preheating to 80℃ or even 90℃, it is only 10 to 20℃ away from the boiling point of 100℃. Due to the slow system response time or the tolerance of parts, the water temperature may reach the boiling point the moment the preheating ends and water is dispensed. This will form a large number of boiling bubbles, and the water vapor mixed together will spray into the user's cup. It may even cause burns to the user due to the splashing, resulting in a poor user experience. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, the first objective of this invention is to propose a preheating method for an instant hot water dispenser. By preheating the remaining water within a target preheating time using a power-reducing method until the temperature rise of the remaining water reaches the target temperature rise, a higher preheating temperature can be achieved while avoiding the problem of boiling water causing splashing. This improves the user experience while avoiding usage risks.

[0005] A second objective of this invention is to provide a computer-readable storage medium.

[0006] The third objective of this invention is to provide an instant hot water dispenser.

[0007] The fourth objective of this invention is to provide a preheating device for an instant hot water dispenser.

[0008] To achieve the above objectives, a first aspect of the present invention provides a preheating method for an instant hot water dispenser, the instant hot water dispenser including an instant heating pipe, the method including: obtaining a target temperature rise value and a target preheating time for preheating the residual water in the instant heating pipe to a target temperature; and preheating the residual water in a power reduction manner within the target preheating time until the temperature rise value of the residual water reaches the target temperature rise value.

[0009] According to the preheating method of the instant hot water dispenser of the present invention, the target temperature rise value and target preheating time for preheating the residual water in the instant heating pipe to the target temperature are first obtained. Then, within the target preheating time, the residual water is preheated in a power reduction manner until the temperature rise value of the residual water reaches the target temperature rise value. Therefore, this method can achieve a high preheating temperature while avoiding the problem of boiling water causing splashing, improving the user experience while avoiding usage risks.

[0010] In addition, the preheating method of the instant hot water dispenser according to the above embodiments of the present invention may also have the following additional technical features:

[0011] According to one embodiment of the present invention, obtaining a target temperature rise value for preheating the residual water in the instant heating pipe to a target temperature includes: obtaining a first temperature difference between the target temperature and the temperature of the residual water in the instant heating pipe; and determining the target temperature rise value based on the first temperature difference and a first preset coefficient.

[0012] According to one embodiment of the present invention, obtaining the target preheating time for preheating the residual water in the instant hot water pipe to the target temperature includes: determining the initial target preheating time based on the target temperature rise value, the maximum preheating power of the instant hot water dispenser, the specific heat capacity and total mass of the residual water; and determining the target preheating time based on the initial target preheating time and a second preset coefficient, wherein the second preset coefficient is greater than 1.

[0013] According to one embodiment of the present invention, the target temperature rise value includes the target temperature rise value of the residual water and the target temperature rise value of the instant heating pipe. Obtaining the target temperature rise value for preheating the residual water in the instant heating pipe to the target temperature includes: obtaining a first temperature difference between the target temperature and the temperature of the residual water in the instant heating pipe, and determining the target temperature rise value of the residual water according to the first temperature difference and a first preset coefficient; obtaining a second temperature difference between the target temperature and the pipe temperature of the instant heating pipe, and determining the target temperature rise value of the instant heating pipe according to the second temperature difference and a third preset coefficient.

[0014] According to one embodiment of the present invention, obtaining the target preheating time for preheating the residual water in the instant heating pipe to a target temperature includes: determining the target preheating time for the residual water based on the target temperature rise value of the residual water, the maximum preheating power of the instant water dispenser, and the specific heat capacity and total mass of the residual water; determining the target preheating time for the instant heating pipe based on the target temperature rise value of the instant heating pipe, the maximum preheating power of the instant water dispenser, and the specific heat capacity and total mass of the instant heating pipe; determining the initial target preheating time based on the target preheating time for the residual water and the target preheating time for the instant heating pipe; and determining the target preheating time based on the initial target preheating time and a second preset coefficient, wherein the second preset coefficient is greater than 1.

[0015] According to one embodiment of the present invention, the preheating method of the instant hot water dispenser further includes: determining the target temperature rise energy based on the target temperature rise value; and determining the target preheating power of the instant hot water dispenser based on the relationship between the target temperature rise energy, the target preheating time, the preheating power of the instant hot water dispenser, and the preheating time.

[0016] According to one embodiment of the present invention, the target preheating power is expressed by the following formula:

[0017]

[0018]

[0019] Among them, Q 目标 For the target temperature rise energy, t 目标 Let M1 be the target preheating time, M2 be the target preheating power, and M1 > M2. Let t be the current time and ta be the first time node.

[0020] According to one embodiment of the present invention, M1 is the maximum preheating power of the instant hot water dispenser, M2 is determined based on the initial target preheating time, the target preheating time and the target temperature rise energy, and ta is determined based on the initial target preheating time.

[0021] According to one embodiment of the present invention, the target preheating power is expressed by the following formula:

[0022]

[0023]

[0024] Among them, Q 目标 For the target temperature rise energy, t 目标 M3 represents the target preheating time, M4 represents the target preheating power (M3 > M4), t represents the current time, tb represents the second time node, tc represents the third time node, and a, b, and c represent coefficients.

[0025] According to one embodiment of the present invention, M3 is the maximum preheating power of the instant hot water dispenser, M4, a, b and c are determined according to the target preheating time of the residual water, the target preheating time of the instant hot water pipe, the target preheating time and the target temperature rise energy, tb is determined according to the target preheating time of the residual water, and tc is determined according to the target preheating time of the instant hot water pipe.

[0026] To achieve the above objectives, a second aspect of the present invention provides a computer-readable storage medium having a program stored thereon that, when executed by a processor, implements the above-described preheating method for an instant hot water dispenser.

[0027] The computer-readable storage medium of this invention, by executing the preheating method of the instant hot water dispenser described above, can achieve a high preheating temperature while avoiding the problem of splashing caused by boiling water, thus improving the user experience and avoiding usage risks.

[0028] To achieve the above objectives, a third aspect of the present invention provides an instant hot water dispenser, comprising: a memory, a processor, and a program stored in the memory and executable on the processor. When the processor executes the program, it implements the preheating method of the instant hot water dispenser described above.

[0029] According to the embodiments of the present invention, the instant hot water dispenser can achieve a high preheating temperature by performing the above-described preheating method, while avoiding the problem of splashing caused by boiling water, thus improving the user experience and avoiding usage risks.

[0030] To achieve the above objectives, a fourth aspect of the present invention provides a preheating device for an instant hot water dispenser. The instant hot water dispenser includes an instant heating pipe, and the device includes: an acquisition module for acquiring a target temperature rise value and a target preheating time for preheating the residual water in the instant heating pipe to a target temperature; and a preheating module for preheating the residual water in a power reduction manner within the target preheating time until the temperature rise value of the residual water reaches the target temperature rise value.

[0031] According to an embodiment of the present invention, the preheating device of an instant hot water dispenser includes an acquisition module for acquiring the target temperature rise value and the target preheating time for preheating the residual water in the instant heating pipe to the target temperature, and a preheating module for preheating the residual water within the target preheating time by reducing power until the temperature rise value of the residual water reaches the target temperature rise value. Therefore, this device can achieve a high preheating temperature while avoiding the problem of boiling water causing splashing, improving the user experience while avoiding usage risks.

[0032] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0033] Figure 1A flowchart illustrating a preheating method for an instant hot water dispenser according to an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram illustrating the change of target preheating power over time according to an embodiment of the present invention;

[0035] Figure 3 A flowchart illustrating a preheating method for an instant hot water dispenser according to a specific example of the present invention;

[0036] Figure 4 This is a block diagram of an instant hot water dispenser according to an embodiment of the present invention;

[0037] Figure 5 This is a block diagram of the preheating device of an instant hot water dispenser according to an embodiment of the present invention. Detailed Implementation

[0038] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0039] The following description, with reference to the accompanying drawings, describes the preheating method, computer-readable storage medium, instant hot water dispenser, and preheating device for the instant hot water dispenser proposed in the embodiments of the present invention.

[0040] Figure 1 This is a flowchart of a preheating method for an instant hot water dispenser according to an embodiment of the present invention.

[0041] like Figure 1 As shown, the preheating method of the instant hot water dispenser in this embodiment of the invention may include the following steps:

[0042] S1, obtain the target temperature rise value and target preheating time for preheating the residual water in the instant heating pipe to the target temperature.

[0043] S2, within the target preheating time, preheat the residual water according to the power reduction method until the temperature rise of the residual water reaches the target temperature rise value.

[0044] Specifically, when a user needs to use the instant hot water dispenser and presses the hot water function, the instant heating pipe first preheats the remaining water in the pipe to ensure that the water coming out is at a higher temperature. During preheating, the target temperature rise value for preheating the remaining water in the instant heating pipe to the target temperature can be obtained. For example, the user's set water temperature, i.e., the target temperature, can be obtained first, and the temperature of the remaining water in the instant heating pipe can be obtained through a temperature sensor. The target temperature rise value can be obtained based on the temperature difference between the two. The target preheating time for preheating the remaining water in the instant heating pipe to the target temperature can also be obtained. For example, the time taken to raise the temperature of the remaining water to the target temperature can be obtained by looking up a table, i.e., the target preheating time. In the relationship table, there is a one-to-one correspondence between the target preheating time and the target temperature rise value. After determining the target temperature rise value, the corresponding target preheating time can be determined. During the target preheating time, the remaining water can be preheated using a power-reduction method. First, the remaining water is preheated at a higher power for a period, then preheated at a lower power until the temperature rise reaches the target value. At this point, the preheating is complete, and the hot water dispenser can dispense water normally. This achieves a higher preheating temperature while avoiding the problem of boiling water causing splashing, improving the user experience while minimizing operational risks.

[0045] The specific workflow of the preheating method of the instant hot water dispenser of the present invention is described in detail below.

[0046] According to one embodiment of the present invention, obtaining a target temperature rise value for preheating the residual water in the instant heating pipe to a target temperature includes: obtaining a first temperature difference between the target temperature and the temperature of the residual water in the instant heating pipe; and determining the target temperature rise value based on the first temperature difference and a first preset coefficient. The first preset coefficient can be determined according to actual conditions.

[0047] Specifically, when obtaining the target temperature rise value for preheating the residual water in the instant heating pipe to the target temperature, the target temperature and the temperature of the residual water in the instant heating pipe can be obtained first. For example, the target temperature can be directly selected by the user through the control panel of the instant hot water dispenser. For instance, if the user wants to drink warm water, they can directly select a temperature of 60℃, etc., meaning the target temperature can be directly obtained from the memory of the instant hot water dispenser. The temperature of the residual water in the instant heating pipe can be obtained by setting a temperature sensor at the water outlet. After obtaining the target temperature and the temperature of the residual water in the instant heating pipe, the difference between the two temperatures is calculated, i.e., the first temperature difference value. Based on the first temperature difference value and a first preset coefficient, the target temperature rise value can be determined. For example, if the user-set target temperature is 90℃, meaning the residual water temperature inside the heat pipe is 30℃, then the first temperature difference is 60℃. The first preset coefficient can be set between 0 and 1. For instance, the first preset coefficient can be set to 0.9, thus determining the target temperature rise to be 54℃ (0.9 * 60℃). This means the goal of this preheating is to raise the residual water temperature inside the pipe from 30℃ to 84℃. By multiplying the first temperature difference by the first preset coefficient, the temperature rise can be reduced to prevent excessively high temperatures that could scald the user when the water is dispensed, thus providing protection.

[0048] According to one embodiment of the present invention, obtaining the target preheating time for preheating the residual water in the instant hot water pipe to the target temperature includes: determining the initial target preheating time based on the target temperature rise value, the maximum preheating power of the instant hot water dispenser, the specific heat capacity and total mass of the residual water; and determining the target preheating time based on the initial target preheating time and a second preset coefficient, wherein the second preset coefficient is greater than 1.

[0049] Specifically, when obtaining the target preheating time for preheating the residual water in the instant heating pipe to the target temperature, the initial target preheating time can be determined based on the target temperature rise, the maximum preheating power of the instant hot water dispenser, the specific heat capacity of the residual water, and the total mass. For example, the initial target preheating time can be calculated using the formula t = cmΔT / P, where t is the initial target preheating time, c is the specific heat capacity of the residual water, m is the total mass of the residual water (which is a constant since the instant heating pipe structure is fixed and preset in the memory, such as 0.015 kg), ΔT is the target temperature rise, and P is the maximum preheating power of the instant hot water dispenser, such as 2000W. From this, the initial target preheating time can be calculated. After determining the initial target preheating time, the target preheating time is determined based on the initial target preheating time and the second preset coefficient. For example, the second preset coefficient can be set to 2. The initial target preheating time is multiplied by the second preset coefficient to determine the target preheating time. By multiplying the initial target preheating time by the second preset coefficient, the preheating time can be lengthened, which makes it easier to preheat with lower power and achieve a slower rate of heating of the residual water in the pipe. This helps to reduce the requirements of the system reaction speed and reduce the possibility of boiling and splashing of the effluent.

[0050] According to one embodiment of the present invention, the target temperature rise value includes a target temperature rise value for residual water and a target temperature rise value for the instant heating pipe. Obtaining the target temperature rise value for preheating the residual water in the instant heating pipe to the target temperature includes: obtaining a first temperature difference between the target temperature and the temperature of the residual water in the instant heating pipe, and determining the target temperature rise value for the residual water based on the first temperature difference and a first preset coefficient; obtaining a second temperature difference between the target temperature and the pipe temperature of the instant heating pipe, and determining the target temperature rise value for the instant heating pipe based on the second temperature difference and a third preset coefficient. The third preset coefficient can be determined according to actual conditions.

[0051] Specifically, heating the water inside the instant heating pipe to the target temperature requires considering the heat transfer of the pipe itself. For example, heating the residual water inside an instant heating pipe with a pipe temperature of 25 degrees Celsius to 60 degrees Celsius requires not only the energy needed to heat the water to 60 degrees Celsius, but also the energy needed to heat the pipe itself to 60 degrees Celsius. The total preheating energy is the sum of these two parts. Therefore, the temperature rise of the instant heating pipe itself needs to be considered. The target temperature rise can include the target temperature rise of the residual water and the target temperature rise of the instant heating pipe. When obtaining the target temperature rise for preheating the residual water inside the pipe to the target temperature, the target temperature and the temperature of the residual water inside the pipe can be obtained first. For example, the target temperature can be selected directly by the user through the control panel of the instant water dispenser, or by the user through a smart device connected to the instant water dispenser. The temperature of the residual water inside the pipe can be obtained through a temperature sensor installed at the water outlet. After obtaining the target temperature and the temperature of the residual water inside the pipe, the difference between the two temperatures is calculated, i.e., the first temperature difference. After obtaining the first temperature difference, the target temperature rise of the residual water can be determined based on the first temperature difference and the first preset coefficient. For example, if the user-set target temperature is 90℃, meaning the residual water temperature inside the heat pipe is 30℃, then the first temperature difference is 60℃. The value of the first preset coefficient can be set between 0 and 1. For example, the first preset coefficient can be set to 0.9, thus determining the target temperature rise to be 54℃ (0.9 * 60℃). That is, the goal of this preheating is to raise the temperature of the residual water inside the pipe from 30℃ to 84℃. By multiplying the first temperature difference by the first preset coefficient, the temperature rise can be reduced to prevent the temperature from being too high and causing scalding to the user when the water is dispensed, thus providing protection.

[0052] The target temperature and the temperature of the instant heating pipe are obtained. For example, the pipe temperature can be obtained from a temperature sensor. After obtaining the target temperature and the pipe temperature, the difference between the two temperatures is calculated, which is the second temperature difference. Based on the second temperature difference and a third preset coefficient, the target temperature rise of the instant heating pipe can be determined. For example, if the user-set target temperature is 90℃ and the pipe temperature is 30℃, then the second temperature difference is 60℃. The second preset coefficient can be set between 0 and 1. For example, the second preset coefficient can be set to 0.8, thus determining the target temperature rise of the instant heating pipe to be 48℃ (0.8 * 60℃). That is, the goal of this preheating is to raise the temperature of the residual water in the pipe from 30℃ to 78℃ by 48℃.

[0053] According to one embodiment of the present invention, obtaining the target preheating time for preheating the residual water in the instant heating pipe to a target temperature includes: determining the target preheating time for the residual water based on the target temperature rise value of the residual water, the maximum preheating power of the instant water dispenser, and the specific heat capacity and total mass of the residual water; determining the target preheating time for the instant heating pipe based on the target temperature rise value of the instant heating pipe, the maximum preheating power of the instant water dispenser, and the specific heat capacity and total mass of the instant heating pipe; determining the initial target preheating time based on the target preheating time for the residual water and the target preheating time for the instant heating pipe; and determining the target preheating time based on the initial target preheating time and a second preset coefficient, wherein the second preset coefficient is greater than 1.

[0054] Specifically, when obtaining the target preheating time for preheating the residual water in the instant heating pipe to the target temperature, the target preheating time for the residual water can be determined based on the target temperature rise of the residual water, the maximum preheating power of the instant hot water dispenser, the specific heat capacity of the residual water, and the total mass. For example, the target preheating time for the residual water can be calculated using the formula t = cmΔT / P, where t is the target preheating time for the residual water, c is the specific heat capacity of the residual water, m is the total mass of the residual water (which is a constant since the instant heating pipe structure is fixed and preset in the memory, such as 0.015 kg), ΔT is the target temperature rise of the residual water, and P is the maximum preheating power of the instant hot water dispenser, such as 2000W. The target preheating time for the residual water can then be calculated.

[0055] Based on the target temperature rise of the instant heating element, the maximum preheating power of the instant hot water dispenser, and the specific heat capacity and total mass of the instant heating element, the target preheating time can be determined. For example, the instant heating element can be considered as an ideal, uniform material. Since the mass and material of each mass-produced instant heating element are consistent, both the mass and specific heat capacity of the instant heating element are constants. A constant b can be defined, where b is the product of the mass and specific heat capacity of the instant heating element. The value of the constant b can be calculated in advance through experiments. For example, according to the formula t = bΔT / P, after heating the instant heating element body at 2000W power for 1 second in the laboratory, the measured temperature rise is 30 degrees Celsius, i.e., 1 = b * 30 / 2000. From this, the value of the constant b can be calculated to be 66.7, and this value can be stored in memory as a constant. Therefore, the target preheating time of the instant hot water pipe can be calculated according to the formula t=b△T / P, where t is the target preheating time of the instant hot water pipe, b is a pre-stored constant, △T is the target temperature rise value of the instant hot water pipe, and P is the maximum preheating power of the instant hot water dispenser.

[0056] After determining the target preheating time for the residual water and the target preheating time for the instantaneous heating pipe, an initial target preheating time can be determined based on these two times. This initial target preheating time is the sum of the target preheating times for the residual water and the instantaneous heating pipe. Once the initial target preheating time is obtained, the target preheating time can be determined based on the initial target preheating time and a second preset coefficient. For example, the second preset coefficient can be 2. Multiplying the initial target preheating time by the second preset coefficient yields the target preheating time, thus extending the preheating time and using lower power for preheating. This results in a slower rate of temperature rise for the residual water inside the pipe, which helps reduce the system's reaction speed requirements and decreases the possibility of boiling and splashing at the outlet.

[0057] According to one embodiment of the present invention, the preheating method of the instant hot water dispenser further includes: determining the target temperature rise energy based on the target temperature rise value; and determining the target preheating power of the instant hot water dispenser based on the relationship between the target temperature rise energy, the target preheating time, the preheating power of the instant hot water dispenser, and the preheating time.

[0058] Specifically, after obtaining the target temperature rise value, the target temperature rise energy can be determined based on it. For example, the target temperature rise energy can be determined using the formula Q = cmΔT. The target temperature rise energy can include two parts: the energy required to preheat the residual water in the heat pipe to the target temperature and the energy required to preheat the heat pipe itself to the target temperature. The sum of these two parts can be used as the target temperature rise energy. For example, the target temperature rise energy of the residual water can be determined based on its specific heat capacity, total mass, and target temperature rise value; the target temperature rise energy of the heat pipe can be determined based on its specific heat capacity, mass, and target temperature rise value. The sum of these two energies is then used as the target temperature rise energy. After obtaining the target temperature rise energy, the target preheating power of the instant hot water dispenser can be determined based on the relationship between the target temperature rise energy, the target preheating time, and the preheating power and preheating time. For example, the target preheating time can be divided into two parts. In the first part, at the beginning of the preheating time, the target preheating power of the instant hot water dispenser can be determined to be the maximum preheating power. In the second part, after a period of preheating, preheating can be carried out with a lower preheating power based on the remaining temperature rise energy. Thus, by preheating with high power first and then low power, a higher preheating temperature can be achieved simultaneously while avoiding splashing.

[0059] According to one embodiment of the present invention, the target preheating power is expressed by the following formula:

[0060]

[0061]

[0062] Among them, Q 目标 For the target temperature rise energy, t目标 Let M1 be the target preheating time, M2 be the target preheating power (M1 > M2), t be the current time, and ta be the first time node. Here, M1 is the maximum preheating power of the instant hot water dispenser, M2 is determined based on the initial target preheating time, the target preheating time, and the target temperature rise energy, and ta is determined based on the initial target preheating time.

[0063] Specifically, after obtaining the target preheating time, the actual output power versus time t within the target preheating time can be obtained as a function: P 当前 = f(t)(0≤t≤t) 目标 This function represents the change in required output power over time. Therefore, once this function is obtained, the output power from time 0 (the start of preheating) to time t can be calculated. 目标 The calculation determines the required power output at each time point and outputs it to the heat pipe. When obtaining this function, from Q = Pt, it can be known that from 0 to t... 目标 During the specified time period, the total energy output during heat pipe preheating is actually the definite integral of the power output over time during this period: By taking the target temperature rise energy as the actual total output energy, we can obtain... When obtaining the target preheating power, for example, an experiment can be conducted to heat the water at the maximum preheating power of the instant hot water dispenser. The heating time can be determined based on the initial target preheating time. For instance, half of the initial target preheating time can be heated at the maximum preheating power of the instant hot water dispenser, with the remaining time heated at power M2. When calculating power M2, the energy generated by heating at the maximum heating power can be calculated first. Combined with... Figure 2 As shown, the integral The geometric meaning of S is the total area S between the power of 0 and the target temperature rise, where the target temperature rise energy is a known quantity. Using the maximum heating power of the instant hot water dispenser, such as 2000W, and the initial target preheating time, the corresponding area can be calculated geometrically as 2000W multiplied by the initial target preheating time. For example, it can heat half of the initial target preheating time, thus determining the corresponding area S1 = 2000 * 0.5t. 初始目标预热时间 The remaining area S2 is the total area S minus S1. Therefore, the value of M2 can be determined based on the remaining area and the remaining time, i.e., according to (S-S1) / (t). 目标 -0.5t 初始目标预热时间 The value of M2 can be calculated. For example, the calculated value of M2 is 333W. Therefore, preheating can be performed with high power first and then low power. This can achieve both a high preheating temperature and avoid splashing.

[0064] According to another embodiment of the present invention, the target preheating power is expressed by the following formula:

[0065]

[0066]

[0067] Among them, Q 目标 For the target temperature rise energy, t 目标 Let M3 be the target preheating time, M4 be the target preheating power (M3 > M4), t be the current time, tb be the second time node, tc be the third time node, and a, b, and c be coefficients. M3 represents the maximum preheating power of the instant hot water dispenser. M4, a, b, and c are determined based on the target preheating time of the remaining water, the target preheating time of the instant heating pipe, the target preheating time, and the target temperature rise energy. tb is determined based on the target preheating time of the remaining water, and tc is determined based on the target preheating time of the instant heating pipe.

[0068] Specifically, besides preheating at the maximum preheating power of the instant water dispenser for a period of time and then directly switching to low power for preheating, one can also smoothly reduce the power over a period of time after preheating at the maximum preheating power. For example, in the above formula, the instant water dispenser first heats at its maximum preheating power M3, and the heating time can be determined based on the target preheating time of the remaining water, for example, half of the target preheating time. Then, in the next period, power control can be achieved using a quadratic function, with the preheating time determined based on the target preheating time of the heating element, for example, half of the target preheating time. In the final period, preheating is performed at a stable low power. Similarly, based on the geometric meaning of the integral function, the values ​​of the coefficients a, b, and c of the quadratic function, as well as the value of the target preheating power M4, can be determined based on the target preheating time of the remaining water, the target preheating time of the heating element, the target preheating time, and the target temperature rise energy. Furthermore, the quadratic function can be replaced with other functions, such as trigonometric functions, to ensure a smooth transition of the preheating power to a lower target preheating power after the period of maximum preheating. This allows for preheating at high power first, followed by low power, in order to achieve both a high preheating temperature and avoid splashing.

[0069] The following is combined Figure 3 The preheating method of the present invention will be described below.

[0070] As a specific example, the preheating method of the instant hot water dispenser of the present invention may include the following steps:

[0071] S101, obtain the first temperature difference between the target temperature and the residual water temperature in the instantaneous heating pipe, and determine the target temperature rise value of the residual water based on the first temperature difference and the first preset coefficient.

[0072] S102. Determine the target preheating time of the residual water based on the target temperature rise of the residual water, the maximum preheating power of the instant hot water dispenser, and the specific heat capacity and total mass of the residual water.

[0073] S103, obtain the second temperature difference between the target temperature and the pipe temperature of the instant heating pipe, and determine the target temperature rise value of the instant heating pipe based on the second temperature difference and the third preset coefficient.

[0074] S104. Determine the target preheating time of the instant heating pipe based on the target temperature rise value of the instant heating pipe, the maximum preheating power of the instant hot water dispenser, and the specific heat capacity and total mass of the instant heating pipe.

[0075] S105, determine the initial target preheating time based on the target preheating time of the residual water and the target preheating time of the instantaneous heating pipe.

[0076] S106, determine the target preheating time based on the initial target preheating time and the second preset coefficient.

[0077] S107, determine the target temperature rise energy based on the target temperature rise value.

[0078] S108 determines the target preheating power of the instant hot water dispenser based on the relationship between the target temperature rise energy, the target preheating time, and the preheating power and preheating time of the instant hot water dispenser, and outputs it to the instant heating pipe for preheating.

[0079] S109, Determine whether the target preheating time has been reached. If yes, proceed to step S110; if no, proceed to step S108.

[0080] S110, preheating complete, water output normal.

[0081] In summary, the preheating method for an instant hot water dispenser according to embodiments of the present invention first obtains the target temperature rise value and target preheating time for preheating the residual water in the instant heating pipe to the target temperature. Then, within the target preheating time, the residual water is preheated using a power reduction method until the temperature rise value of the residual water reaches the target temperature rise value. Therefore, this method can achieve a high preheating temperature while avoiding the problem of boiling water causing splashing, improving the user experience while avoiding usage risks.

[0082] Corresponding to the above embodiments, the present invention also proposes a computer-readable storage medium.

[0083] The computer-readable storage medium of this invention stores a program that, when executed by a processor, implements the preheating method of the instant hot water dispenser described above.

[0084] According to the computer-readable storage medium of the present invention, by performing the above-described preheating method of the instant hot water dispenser, a higher preheating temperature can be achieved, while avoiding the problem of splashing caused by boiling water, thus improving the user experience and avoiding usage risks.

[0085] Corresponding to the above embodiments, the present invention also proposes an instant hot water dispenser.

[0086] like Figure 4 As shown, the instant hot water dispenser 200 of this embodiment may include: a memory 210, a processor 220, and a program stored in the memory 210 and executable on the processor 220. When the processor 220 executes the program, it implements the above-mentioned preheating method of the instant hot water dispenser.

[0087] According to the embodiments of the present invention, the instant hot water dispenser can achieve a high preheating temperature by performing the above-described preheating method, while avoiding the problem of splashing caused by boiling water, thus improving the user experience and avoiding usage risks.

[0088] Corresponding to the above embodiments, the present invention also proposes a preheating device for an instant hot water dispenser.

[0089] like Figure 5 As shown, the preheating device 100 of the instant hot water dispenser proposed in this embodiment of the invention includes: an acquisition module 110 and a preheating module 120.

[0090] The acquisition module 110 is used to acquire the target temperature rise value and the target preheating time for preheating the residual water in the instant heating pipe to the target temperature. The preheating module 120 is used to preheat the residual water in a power reduction manner within the target preheating time until the temperature rise value of the residual water reaches the target temperature rise value.

[0091] According to one embodiment of the present invention, the acquisition module 110 acquires the target temperature rise value for preheating the residual water in the instant heating pipe to the target temperature, specifically used for: acquiring a first temperature difference between the target temperature and the temperature of the residual water in the instant heating pipe; and determining the target temperature rise value based on the first temperature difference and a first preset coefficient.

[0092] According to one embodiment of the present invention, the acquisition module 110 acquires the target preheating time for preheating the residual water in the instant hot water pipe to the target temperature, specifically used for: determining the initial target preheating time based on the target temperature rise value, the maximum preheating power of the instant hot water dispenser, the specific heat capacity and total mass of the residual water; and determining the target preheating time based on the initial target preheating time and a second preset coefficient, wherein the second preset coefficient is greater than 1.

[0093] According to one embodiment of the present invention, the target temperature rise value includes the target temperature rise value of the residual water and the target temperature rise value of the instant heating pipe. The acquisition module 110 acquires the target temperature rise value for preheating the residual water in the instant heating pipe to the target temperature, specifically used for: acquiring a first temperature difference between the target temperature and the temperature of the residual water in the instant heating pipe, and determining the target temperature rise value of the residual water according to the first temperature difference and a first preset coefficient; acquiring a second temperature difference between the target temperature and the pipe temperature of the instant heating pipe, and determining the target temperature rise value of the instant heating pipe according to the second temperature difference and a third preset coefficient.

[0094] According to one embodiment of the present invention, the acquisition module 110 acquires the target preheating time for preheating the residual water in the instant heating pipe to the target temperature, specifically for: determining the target preheating time for the residual water based on the target temperature rise value of the residual water, the maximum preheating power of the instant water dispenser, and the specific heat capacity and total mass of the residual water; determining the target preheating time for the instant heating pipe based on the target temperature rise value of the instant heating pipe, the maximum preheating power of the instant water dispenser, and the specific heat capacity and total mass of the instant heating pipe; determining the initial target preheating time based on the target preheating time for the residual water and the target preheating time for the instant heating pipe; and determining the target preheating time based on the initial target preheating time and a second preset coefficient, wherein the second preset coefficient is greater than 1.

[0095] According to one embodiment of the present invention, the preheating module 120 is further configured to: determine the target temperature rise energy based on the target temperature rise value; and determine the target preheating power of the instant hot water dispenser based on the target temperature rise energy, the target preheating time, and the relationship between the preheating power and the preheating time of the instant hot water dispenser.

[0096] According to one embodiment of the present invention, the target preheating power is expressed by the following formula:

[0097]

[0098]

[0099] Among them, Q 目标 For the target temperature rise energy, t 目标 Let M1 be the target preheating time, M2 be the target preheating power, and M1 > M2. Let t be the current time and ta be the first time node.

[0100] According to one embodiment of the present invention, M1 is the maximum preheating power of the instant hot water dispenser, M2 is determined based on the initial target preheating time, the target preheating time and the target temperature rise energy, and ta is determined based on the initial target preheating time.

[0101] According to one embodiment of the present invention, the target preheating power is expressed by the following formula:

[0102]

[0103]

[0104] Among them, Q 目标 For the target temperature rise energy, t 目标 M3 represents the target preheating time, M4 represents the target preheating power (M3 > M4), t represents the current time, tb represents the second time node, tc represents the third time node, and a, b, and c represent coefficients.

[0105] According to one embodiment of the present invention, M3 is the maximum preheating power of the instant hot water dispenser, M4, a, b and c are determined according to the target preheating time of the residual water, the target preheating time of the instant hot water pipe, the target preheating time and the target temperature rise energy, tb is determined according to the target preheating time of the residual water, and tc is determined according to the target preheating time of the instant hot water pipe.

[0106] It should be noted that for details not disclosed in the preheating device of the instant hot water dispenser in this embodiment of the invention, please refer to the details disclosed in the preheating method of the instant hot water dispenser in this embodiment of the invention, which will not be repeated here.

[0107] According to an embodiment of the present invention, the preheating device of an instant hot water dispenser includes an acquisition module for acquiring the target temperature rise value and the target preheating time for preheating the residual water in the instant heating pipe to the target temperature, and a preheating module for preheating the residual water within the target preheating time by reducing power until the temperature rise value of the residual water reaches the target temperature rise value. Therefore, this device can achieve a high preheating temperature while avoiding the problem of boiling water causing splashing, improving the user experience while avoiding usage risks.

[0108] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0109] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0110] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0111] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0112] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0113] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A preheating method of an instant hot water machine, characterized by, The instant hot water machine comprises an instant heating pipe, and the method comprises: obtaining a target temperature rise value for preheating residual water in the instant heating pipe to a target temperature and a target preheating time; preheating the residual water in a power reduction mode for the target preheating time until the temperature rise value of the residual water reaches the target temperature rise value; obtaining a target temperature rise value for preheating residual water in the instant heating pipe to a target temperature comprises: obtaining a first temperature difference value between the target temperature and the temperature of the residual water in the instant heating pipe; determining the target temperature rise value according to the first temperature difference value and a first preset coefficient; obtaining a target preheating time for preheating residual water in the instant heating pipe to a target temperature comprises: determining an initial target preheating time according to the target temperature rise value, the maximum preheating power of the instant hot water machine, the specific heat capacity and total mass of the residual water; determining the target preheating time according to the initial target preheating time and a second preset coefficient, wherein the second preset coefficient is greater than 1.

2. The method of claim 1, wherein, The target temperature rise value comprises a residual water target temperature rise value and an instant heating pipe target temperature rise value, and obtaining a target temperature rise value for preheating residual water in the instant heating pipe to a target temperature comprises: obtaining a first temperature difference value between the target temperature and the temperature of the residual water in the instant heating pipe, and determining the residual water target temperature rise value according to the first temperature difference value and a first preset coefficient; obtaining a second temperature difference value between the target temperature and the pipe temperature of the instant heating pipe, and determining the instant heating pipe target temperature rise value according to the second temperature difference value and a third preset coefficient.

3. The method of claim 2, wherein, Obtaining a target preheating time for preheating residual water in the instant heating pipe to a target temperature comprises: determining a residual water target preheating time according to the residual water target temperature rise value, the maximum preheating power of the instant hot water machine, and the specific heat capacity and total mass of the residual water; determining an instant heating pipe target preheating time according to the instant heating pipe target temperature rise value, the maximum preheating power of the instant hot water machine, and the specific heat capacity and total mass of the instant heating pipe; determining an initial target preheating time according to the residual water target preheating time and the instant heating pipe target preheating time; determining the target preheating time according to the initial target preheating time and a second preset coefficient, wherein the second preset coefficient is greater than 1.

4. The method according to claim 1 or 3, characterized in that, The method further comprises: determining a target temperature rise energy according to the target temperature rise value; determining a target preheating power of the instant hot water machine according to the target temperature rise energy, the target preheating time, and the relationship between the preheating power and the preheating time of the instant hot water machine.

5. The method of claim 4, wherein, The target preheating power is expressed by the following formula: wherein Q 目标 target is the target temperature rise energy, t 目标 target is the target preheat time, M1 and M2 are the target preheat power, and M1 > M2, t is the current time, and ta is the first time node.

6. The method of claim 5, wherein, The M1 is the maximum preheating power of the instant hot water machine, the M2 is determined according to the initial target preheating time, the target preheating time, and the target temperature rise energy, and the ta is determined according to the initial target preheating time.

7. The method of claim 4, wherein, The target preheating power is expressed by the following formula: wherein Q 目标 target is the target temperature rise energy, t 目标 target is the target preheating time, M3 and M4 are the target preheating power, and M3>M4, t is the current time, tb is the second time node, tc is the third time node, and a, b, and c are coefficients.

8. The method of claim 7, wherein, The M3 is a maximum preheating power of the instant water heater, the M4, a, b, and c are determined according to the residual water target preheating time, the instant tube target preheating time, the target preheating time, and the target temperature rise energy, the tb is determined according to the residual water target preheating time, and the tc is determined according to the instant tube target preheating time.

9. A computer-readable storage medium, characterized in that, A program is stored thereon, and the program is executed by a processor to implement the preheating method of the instant water heater according to any one of claims 1-8.

10. A quick heating water dispenser, characterized in that, A program is stored thereon, and the program is executed by a processor to implement the preheating method of the instant water heater according to any one of claims 1-8.

11. A preheating device of an instant hot water dispenser, characterized in that, The instant water heater comprises an instant tube, and the device comprises: An acquisition module is configured to acquire a target temperature rise value and a target preheating time for preheating residual water in the instant tube to a target temperature; the acquisition module acquires the target temperature rise value for preheating the residual water in the instant tube to the target temperature, and specifically is configured to acquire a first temperature difference value between the target temperature and a residual water temperature in the instant tube; and determine an even target temperature rise value according to the first temperature difference value and a first preset coefficient; the acquisition module acquires the target preheating time for preheating the residual water in the instant tube to the target temperature, and specifically is configured to determine an initial target preheating time according to the target temperature rise value, a maximum preheating power of the instant water heater, a specific heat capacity, and a total mass of the residual water; and determine the target preheating time according to the initial target preheating time and a second preset coefficient, wherein the second preset coefficient is greater than 1; A preheating module is configured to preheat the residual water in a power reduction mode for the target preheating time until a temperature rise value of the residual water reaches the target temperature rise value.

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