Water purifier and heating control method thereof

Abstract

The present disclosure relates to a water purifier and a heating control method thereof, the water purifier comprising: a water purification module; the water purification module is used for purifying water quality, and a water outlet of the water purification module is communicated with a water inlet of a vacuum heat storage tank; the vacuum heat storage tank is used for storing hot water, and a water outlet of the vacuum heat storage tank is communicated with a water inlet of the vacuum heat storage tank through a hot water pump and a heating module, and the heating module is used for circulating heating of the hot water stored in the vacuum heat storage tank; and a water mixing cavity is used for mixing cold water flowing out of the water purification module and hot water flowing out of the vacuum heat storage tank, and then flowing into the hot water pump. By using the embodiment of the present disclosure, the heat in the heat storage tank can be fully utilized, the large-flow supply of hot water of each gear can be realized, the water outlet speed can be adjusted based on the relationship between the current water temperature and the outlet water temperature to meet the user demand, the continuity of hot water supply is improved, and the user experience is improved.

Description

Technical Field

[0001] This disclosure relates to the field of water purification equipment technology, and in particular to a water purifier and its heating control method. Background Technology

[0002] As people's demands for quality of life increase, water purifiers are becoming more and more popular and widely used. Improving the hot water supply capacity of water purifiers has become a key aspect of enhancing user experience.

[0003] In related technologies, hot water supply is often achieved by using heating modules and vacuum storage tanks. However, in these technologies, as the amount of hot water released increases, the amount of cold water accumulating in the lower part of the tank also increases. This makes it impossible to fully utilize the heat in the tank, resulting in an inability to achieve a large flow rate of hot water at each stage. Furthermore, it is impossible to adjust the water flow rate based on the relationship between the current water temperature and the outlet water temperature to meet user needs, leading to a sharp drop in the water flow rate, low continuity of hot water supply, and a poor user experience. Summary of the Invention

[0004] This disclosure provides a water purifier and its heating control method to at least solve the problems in related technologies, such as the inability to fully utilize the heat in the heating tank, resulting in an inability to achieve a large flow rate of hot water at each setting, the inability to adjust the water flow rate based on the relationship between the current water temperature and the outlet water temperature to meet user needs, leading to a sharp drop in water flow rate, low continuity of hot water supply, and a poor user experience. The technical solution of this disclosure is as follows:

[0005] According to a first aspect of the present disclosure, a water purifier is provided, characterized in that it includes: a water purification module; the water purification module is used to purify water quality, and the outlet of the water purification module is connected to the inlet of the vacuum heat storage tank; the vacuum heat storage tank is used to store hot water, and the outlet of the vacuum heat storage tank is connected to the inlet of the vacuum heat storage tank via a hot water pump and a heating module, the heating module being used to circulate and heat the hot water stored in the vacuum heat storage tank; and a mixing chamber, the mixing chamber being used to mix the cold water flowing out of the water purification module with the hot water flowing out of the vacuum heat storage tank before flowing into the hot water pump.

[0006] In an optional embodiment, the water purifier further includes a first temperature sensor, a second temperature sensor, a third temperature sensor, and a fourth temperature sensor. The first temperature sensor is used to measure the temperature of the mixed water flowing out of the mixing chamber, the second temperature sensor is used to measure the temperature of the hot water flowing out of the heating module, the third temperature sensor is used to measure the temperature of the hot water flowing out of the vacuum storage tank, and the fourth temperature sensor is used to measure the temperature of the cold water flowing out of the water purification module.

[0007] In an optional embodiment, the outlet of the heating module is connected to the inlet of the vacuum heat storage tank via a hot water return valve, and the hot water return valve is used to return the hot water flowing out of the heating module to the vacuum heat storage tank.

[0008] According to a second aspect of the present disclosure, a heating control method based on a water purifier as described above is provided, the method comprising:

[0009] In response to a hot water supply command carrying a target outlet water temperature, the target maximum total flow rate, the current cold water temperature at the outlet of the water purification module, and the current hot water temperature in the vacuum storage tank are determined.

[0010] The target mixed water temperature is obtained based on the target outlet water temperature and the target maximum total flow rate;

[0011] Based on the target maximum total flow rate, the target mixing temperature, the current cold water temperature, and the current hot water temperature, the target cold water flow rate and the target hot water flow rate are obtained;

[0012] The cold water from the outlet of the water purification module and the hot water from the vacuum heat storage tank are mixed according to the target cold water flow rate and the target hot water flow rate, respectively, to obtain mixed water with a temperature of the target mixed water temperature;

[0013] The heating module is controlled to heat the mixed water from the target mixed water temperature to the target outlet water temperature based on a preset upper limit power, and hot water is released based on the target maximum total flow rate when the mixed water is heated to the target outlet water temperature.

[0014] In an optional embodiment, during the process of releasing hot water based on the target maximum total flow rate, the method further includes:

[0015] If the current hot water temperature drops to the target mixing temperature, the target maximum total flow rate is reduced so that the current hot water temperature reaches the target mixing temperature.

[0016] In an optional embodiment, determining the target maximum total flow rate in response to a hot water supply command carrying a target outlet water temperature includes:

[0017] In response to a hot water supply command carrying a target outlet water temperature, a preset total flow range is determined;

[0018] Based on the target outlet water temperature and at least one preset flow rate value within the preset total flow rate range, the mixing water temperature corresponding to each of the at least one preset flow rate value is obtained;

[0019] From the mixing temperatures corresponding to at least one preset flow rate value, determine at least one mixing temperature that is lower than the current hot water temperature;

[0020] The maximum preset flow rate value among the preset flow rate values ​​corresponding to the at least one mixing temperature is taken as the target maximum total flow rate.

[0021] In an optional embodiment, the method further includes:

[0022] During the process of releasing hot water based on the target maximum total flow rate, the current hot water output of the hot water in the vacuum storage tank is obtained;

[0023] Based on the current hot water output, cold water is added to the vacuum storage tank.

[0024] In an optional embodiment, the method further includes:

[0025] Obtain the preset water storage temperature;

[0026] In the absence of a hot water supply instruction, the current operating power of the heating module is determined based on the current hot water temperature and the preset storage water temperature.

[0027] The heating module is controlled to heat the hot water in the vacuum storage tank based on the current operating power, and then stores it in the vacuum storage tank.

[0028] In an optional embodiment, determining the current operating power of the heating module based on the current hot water temperature and the preset storage water temperature includes:

[0029] When the current hot water temperature reaches the preset water storage temperature, the current operating power of the heating module is determined based on the preset water storage temperature and the current hot water temperature.

[0030] If the current hot water temperature is lower than the preset storage water temperature, the current power of the heating module is determined to be the preset upper limit power.

[0031] In an optional embodiment, the step of mixing the cold water from the outlet of the water purification module and the hot water from the vacuum heat storage tank according to the target cold water flow rate and the target hot water flow rate, respectively, to obtain mixed water at the target mixed water temperature includes:

[0032] Based on the target maximum total flow rate and the target cold water flow rate, the target adjustment amount of the flow regulating valve in the water purifier is obtained;

[0033] The flow regulating valve is adjusted based on the target adjustment amount so that the cold water in the outlet of the water purification module and the hot water in the vacuum heat storage tank are mixed according to the target cold water flow rate and the target hot water flow rate, respectively, to obtain mixed water with a temperature of the target mixed water temperature.

[0034] The technical solutions provided by the embodiments of this disclosure bring at least the following beneficial effects:

[0035] The present invention relates to a water purifier module; the water purifier module is used to purify water quality, and its outlet is connected to the inlet of a vacuum heat storage tank; the vacuum heat storage tank is used to store hot water, and its outlet is connected to the inlet of the vacuum heat storage tank via a hot water pump and a heating module; the heating module is used to circulate and heat the hot water stored in the vacuum heat storage tank; a mixing chamber is used to mix the cold water flowing out of the water purifier module with the hot water flowing out of the vacuum heat storage tank before it flows into the hot water pump. By mixing the cold water from the outlet of the water purifier module and the hot water from the vacuum heat storage tank in the mixing chamber, and controlling the heating module to heat and mix the water before releasing it, the heat in the heat storage tank can be fully utilized to achieve a large flow rate of hot water for each setting, improving the continuity of hot water supply and thus enhancing the user experience.

[0036] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0037] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure, and are not intended to unduly limit this disclosure.

[0038] Figure 1 This is a schematic diagram of a water purifier according to an exemplary embodiment;

[0039] Figure 2 This is a flowchart illustrating a heating control method according to an exemplary embodiment;

[0040] Figure 3 This is a flowchart illustrating a target maximum total flow rate according to an exemplary embodiment.

[0041] In the figure, the corresponding labels are: 1-water purification module; 2-vacuum heat storage tank; 3-mixing chamber; 4-heating module; 5-first temperature sensor; 6-second temperature sensor; 7-third temperature sensor; 8-fourth temperature sensor; 9-hot water return valve; 10-hot water pump. Detailed Implementation

[0042] To enable those skilled in the art to better understand the technical solutions of this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings.

[0043] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar different contents and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this disclosure described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0044] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for display, data used for analysis, etc.) involved in this disclosure are all information and data authorized by the user or fully authorized by all parties.

[0045] Please see Figure 1 , Figure 1 This is a schematic diagram of a water purifier according to an exemplary embodiment, such as... Figure 1 As shown, it includes: a water purification module 1; the water purification module 1 is used to purify water quality, and the outlet of the water purification module 1 is connected to the inlet of the vacuum heat storage tank 2; the vacuum heat storage tank 2 is used to store hot water, and the outlet of the vacuum heat storage tank 2 is connected to the inlet of the vacuum heat storage tank 2 via a hot water pump 10 and a heating module 4, and the heating module 4 is used to circulate and heat the hot water stored in the vacuum heat storage tank 2; and a mixing chamber 3, which is used to mix the cold water flowing out of the water purification module 1 with the hot water flowing out of the vacuum heat storage tank 2 before flowing into the hot water pump 10.

[0046] In one specific embodiment, when no one is using water, the cold water flowing out of the water purification module 1 is injected into the vacuum heat storage tank 2 through a water passage connecting the outlet of the water purification module 1 and the inlet of the vacuum heat storage tank 2. Then, through a water passage connecting the outlet of the vacuum heat storage tank 2 and the inlet of the heating module 4, the cold water flowing out of the vacuum heat storage tank 2 is heated by the heating module 4. Finally, through a water passage connecting the outlet of the heating module 4 and the inlet of the vacuum heat storage tank 2, the heated hot water is injected into the vacuum heat storage tank 2.

[0047] In one specific embodiment, when the water purifier dispenses hot water, the cold water flowing out of the water purification module 1 is injected into the mixing chamber 3 through a water path connecting the outlet of the water purification module 1 to one inlet of the mixing chamber 3. The hot water in the vacuum heat storage tank 2 is injected into the mixing chamber 3 through a water path connecting the outlet of the vacuum heat storage tank 2 to another inlet of the mixing chamber 3. The mixed water flowing out of the mixing chamber 3 is heated to the target mixing temperature by the heating module 4 through a water path connecting the outlet of the mixing chamber 3 to the inlet of the heating module 4 before being released.

[0048] In an optional embodiment, the water purifier further includes a first temperature sensor 5, a second temperature sensor 6, a third temperature sensor 7, and a fourth temperature sensor 8. The first temperature sensor 5 is used to measure the temperature of the mixed water flowing out of the mixing chamber, the second temperature sensor 6 is used to measure the temperature of the hot water flowing out of the heating module, the third temperature sensor 7 is used to measure the temperature of the hot water flowing out of the vacuum storage tank, and the fourth temperature sensor 8 is used to measure the temperature of the cold water flowing out of the water purification module.

[0049] In an optional embodiment, the outlet of the heating module 4 is connected to the inlet of the vacuum heat storage tank 2 via a hot water return valve 9, which is used to return the hot water flowing out of the heating module 4 to the vacuum heat storage tank 2.

[0050] In one specific embodiment, when the water purifier dispenses hot water, the cold water flowing out of the water purification module 1 replenishes the vacuum heat storage tank 2 through the water path connecting the outlet of the water purification module 1 to the inlet of the vacuum heat storage tank 2. Based on the temperature of the hot water in the vacuum heat storage tank 2 obtained by the third temperature sensor 7, when the temperature of the hot water in the vacuum heat storage tank 2 is lower than the preset storage temperature, the hot water in the vacuum heat storage tank 2 is drawn out and reheated through the water path connecting the outlet of the vacuum heat storage tank 2 to the inlet of the heating module 4, and the water path connecting the outlet of the heating module 4 to the inlet of the vacuum heat storage tank 2. The heated hot water is then returned to the vacuum heat storage tank 2 through the hot water return valve 9 set on the water path connecting the outlet of the heating module 4 and the inlet of the vacuum heat storage tank 2.

[0051] As can be seen from the technical solutions provided in the embodiments of this specification above, the water purifier in this specification includes a water purification module; the water purification module is used to purify water quality, and its outlet is connected to the inlet of a vacuum heat storage tank; the vacuum heat storage tank is used to store hot water, and its outlet is connected to the inlet of the vacuum heat storage tank via a hot water pump and a heating module; the heating module is used to circulate and heat the hot water stored in the vacuum heat storage tank; and a mixing chamber is used to mix the cold water flowing out of the water purification module with the hot water flowing out of the vacuum heat storage tank before it flows into the hot water pump. In this embodiment, by mixing the cold water in the outlet of the water purification module and the hot water in the vacuum heat storage tank in the mixing chamber, and controlling the heating module to heat the mixed water before releasing it, the heat in the heat storage tank can be fully utilized to achieve a large flow rate supply of hot water at each level, improve the continuity of hot water supply, and thus improve the user experience.

[0052] The following describes a heating control method based on the above embodiments of this application, such as... Figure 2 As shown, the heating control method is used in the water purifier provided in the above embodiments of this application, and includes the following steps.

[0053] In step S201, in response to a hot water supply command carrying a target outlet water temperature, the target maximum total flow rate, the current cold water temperature of the cold water in the outlet of the water purification module, and the current hot water temperature of the hot water in the vacuum storage tank are determined.

[0054] In one specific embodiment, the target outlet water temperature can be the currently set outlet water temperature, the target maximum total flow rate can be the upper limit flow rate through the hot water pump, the current cold water temperature can be the current temperature of the cold water in the outlet of the water purification module, and the current hot water temperature can be the current temperature of the hot water in the vacuum storage tank.

[0055] In an optional embodiment, determining the target maximum total flow rate in response to a hot water supply command carrying a target outlet water temperature may include:

[0056] In step S301, in response to a hot water supply command carrying a target outlet water temperature, a preset total flow range is determined;

[0057] In one specific embodiment, the preset total flow range can be a preset total flow range through the hot water pump. Specifically, the preset total flow range can be 300L / min-4000L / min, and correspondingly, the preset total flow upper limit is 4000L / min.

[0058] In step S303, based on the target outlet water temperature and at least one preset flow rate value within the preset total flow rate range, the mixing water temperature corresponding to each of the at least one preset flow rate value is obtained;

[0059] In a specific embodiment, taking a target outlet water temperature of T2 and at least one preset flow rate value of q as an example, it can be based on the formula The mixing temperature T1 corresponding to any preset flow rate value q is obtained, where c can be the specific heat capacity of water, ρ can be the density of water, P can be the heating power of the heating module, and η can be the thermal efficiency.

[0060] In step S305, from the mixing temperatures corresponding to at least one preset flow rate value, at least one mixing temperature that is lower than the current hot water temperature is determined.

[0061] In one specific embodiment, the mixing temperature corresponding to at least one preset flow rate value is defined as T. 11 T 12 T 13 Taking the current hot water temperature as T3 as an example, determine at least one mixing water temperature T′ that is lower than the current hot water temperature. 11 , T′ 12 , T′ 13 , ……

[0062] In step S307, the maximum preset flow rate value among the preset flow rate values ​​corresponding to at least one mixing temperature is taken as the target maximum total flow rate.

[0063] In one specific embodiment, at least one mixing temperature is T′ 11 , T′ 12 , T′ 13 For example, ..., correspondingly, at least one preset flow rate value corresponding to the mixing temperature can be q. max q can be max The target is the maximum total flow.

[0064] In the above embodiments, the target maximum total flow rate corresponding to the target outlet temperature carried by the hot water supply command is determined by the current hot water temperature in the vacuum storage tank and the preset total flow rate range. Under the premise of meeting the target outlet temperature, the maximum total flow rate can be provided, which can improve the continuity of hot water supply while ensuring user needs.

[0065] In an optional embodiment, the above method may further include:

[0066] Obtain the preset water storage temperature;

[0067] In the absence of a hot water supply instruction, the current operating power of the heating module is determined based on the current hot water temperature and the preset storage water temperature.

[0068] In one specific embodiment, the preset water storage temperature can be the preset target temperature for the water stored in the thermal storage tank.

[0069] In one specific embodiment, the current operating power can be the operating power determined by the heating module based on the current hot water temperature and the preset storage water temperature. Specifically, taking the current hot water temperature as T3 and the preset storage water temperature as T0 as an example, it can be based on... Determine the current operating power P of the heating module.

[0070] The heating module is controlled to heat the hot water in the vacuum storage tank based on the current operating power and store it in the vacuum storage tank.

[0071] In a specific embodiment, taking the current hot water temperature as T3, the preset storage water temperature as T0, and the current operating power of the heating module as P as an example, specifically, hot water can be drawn from the vacuum storage tank by the hot water pump, and the heating module can be controlled to heat the hot water in the storage tank from the current hot water temperature T3 to 95℃-100℃ based on the current operating power P, and then stored in the storage tank through the hot water return valve.

[0072] In the above embodiments, by obtaining the current temperature of the hot water in the storage tank when no hot water supply command is received, and heating the hot water in the storage tank to the preset storage temperature when the water temperature is lower than the preset storage temperature, and adjusting the current operating power of the heating module based on the current water temperature and the preset storage temperature, it can be ensured that the hot water in the storage tank is always kept at a certain temperature level. When the user needs hot water, there is no need to wait for the heating process, which improves the convenience and timeliness of hot water use. Compared with fixed power heating, dynamically adjusting the power according to the actual water temperature can reduce energy consumption.

[0073] In an optional embodiment, determining the current operating power of the heating module based on the current hot water temperature and the preset storage water temperature may include:

[0074] When the current hot water temperature reaches the preset storage water temperature, the current operating power of the heating module is determined based on the preset storage water temperature and the current hot water temperature.

[0075] In a specific embodiment, when the current hot water temperature reaches the preset storage water temperature, specifically, taking the current hot water temperature as T3 and the preset storage water temperature as T0 as an example, it can be based on... Determine the current operating power P of the heating module.

[0076] If the current hot water temperature is lower than the preset storage water temperature, the current power of the heating module is determined to be the preset upper limit power.

[0077] In a specific embodiment, when the current hot water temperature is lower than the preset storage water temperature, specifically, taking the current hot water temperature as T3 and the preset storage water temperature as T0 as an example, the current power of the heating module can be determined to be the preset upper limit power.

[0078] In the above embodiments, by comparing the current hot water temperature in the vacuum storage tank with the preset storage temperature, the current operating power of the heating module is adjusted. Compared with fixed power heating, the power can be dynamically adjusted according to the actual water temperature to avoid overheating or underheating, and further reduce energy costs.

[0079] In step S203, the target mixing temperature is obtained based on the target outlet water temperature and the target maximum total flow rate;

[0080] In one specific embodiment, the target mixing temperature can be the mixing temperature corresponding to the target outlet temperature.

[0081] In one specific embodiment, the target outlet water temperature is T2, and the target maximum total flow rate is q. max For example, it can be based on The target mixing temperature T1 is obtained.

[0082] In step S205, the target cold water flow rate and the target hot water flow rate are obtained based on the target maximum total flow rate, the target mixing temperature, the current cold water temperature, and the current hot water temperature.

[0083] In one specific embodiment, the target maximum total flow is q. max Taking a target mixing temperature of T1, a current cold water temperature of T4, and a current hot water temperature of T3 as an example, it can be based on... q2 = q - q1, thus obtaining the target cold water flow rate q1 and the target hot water flow rate q2.

[0084] In step S207, the cold water in the outlet of the water purification module and the hot water in the vacuum heat storage tank are mixed according to the target cold water flow rate and the target hot water flow rate, respectively, to obtain mixed water with a temperature of the target mixed water temperature.

[0085] In a specific embodiment, taking the target cold water flow rate as q1 and the target hot water flow rate as q2 as an example, specifically, the cold water in the water circuit connecting the outlet of the water purification module and the inlet of the mixing chamber and the hot water in the vacuum heat storage tank can be mixed according to the target cold water flow rate q1 and the target hot water flow rate q2 respectively to obtain mixed water with a temperature of the target mixed water temperature T1.

[0086] In an optional embodiment, the above-mentioned mixing of cold water from the outlet of the water purification module and hot water from the vacuum storage tank according to the target cold water flow rate and the target hot water flow rate, respectively, to obtain mixed water at the target mixing temperature includes:

[0087] Based on the target maximum total flow rate and the target cold water flow rate, the target adjustment amount of the flow regulating valve in the water purifier is obtained;

[0088] In a specific embodiment, the target adjustment amount can be the adjustment amount of the flow regulating valve corresponding to the target maximum total flow rate and the target cold water flow rate. Specifically, the cold water flow rate in the water circuit connected to the outlet of the water purification module and the inlet of the mixing chamber can be controlled to be the target cold water flow rate, and the hot water flow rate in the water circuit connected to the outlet of the vacuum heat storage tank and the inlet of the mixing chamber can be controlled to be the target hot water flow rate.

[0089] The flow control valve is adjusted based on the target adjustment amount so that the cold water in the outlet of the water purification module and the hot water in the vacuum heat storage tank are mixed according to the target cold water flow rate and the target hot water flow rate, respectively, to obtain mixed water with the target mixing temperature.

[0090] In one specific embodiment, the flow regulating valve can be adjusted to a target regulating value so that the cold water connected to the outlet of the water purification module and the inlet of the mixing chamber and the hot water connected to the outlet of the vacuum heat storage tank and the inlet of the mixing chamber are mixed in the mixing chamber according to the target cold water flow rate and the target hot water flow rate, so as to obtain mixed water with a temperature of the target mixing temperature.

[0091] In the above embodiment, by adjusting the flow regulating valve according to the target adjustment amount, the cold water and hot water in the medium-cold water circuit connected to the outlet of the water purification module and the inlet of the mixing chamber can be mixed according to the target cold water flow rate and the target hot water flow rate, respectively, to obtain mixed water with the target mixing temperature. While ensuring the target maximum total flow rate, hot water supply is achieved, and the continuity of hot water supply is improved.

[0092] In an optional embodiment, during the process of releasing hot water based on the target maximum total flow rate, the above method may further include:

[0093] If the current hot water temperature drops to the target mixing temperature, reduce the target maximum total flow rate so that the current hot water temperature reaches the target mixing temperature.

[0094] In a specific embodiment, taking the current hot water temperature as T3, the target mixed water temperature as T1, the target cold water flow rate as q1, the target maximum total flow rate as q, and the target outlet water temperature as T2 as an example, specifically, during the process of releasing hot water based on the target maximum total flow rate, the current hot water temperature continuously decreases. This can be achieved by first reducing the target cold water flow rate q1 to maintain T1. When q1 decreases to 0 and T1 decreases to T3, based on T1 = T3, get Therefore, it is necessary to reduce q to maintain the target outlet water temperature T2.

[0095] In the above embodiments, by reducing the target maximum total flow rate during the hot water discharge process based on the target maximum total flow rate to meet the set target outlet water temperature, the flow rate of hot water in the pipe is relatively slowed down, improving water temperature stability, avoiding insufficient hot water supply, and enhancing the user experience.

[0096] In an optional embodiment, the above method may further include:

[0097] During the process of releasing hot water based on the target maximum total flow rate, the current hot water output of the hot water in the vacuum storage tank is obtained;

[0098] In one specific embodiment, the target hot water output can be the hot water output of the heat storage tank.

[0099] Based on the current hot water output, add cold water to the vacuum storage tank.

[0100] In one specific embodiment, based on the target hot water output, an equal amount of cold water can be added to the heat storage tank through the water outlet of the water purification module connected to the water inlet of the vacuum heat storage tank.

[0101] In the above embodiments, by supplementing an equal amount of cold water during the process of releasing hot water based on the target maximum total flow rate, so that the heat storage tank is always kept full, the heat in the heat storage tank can be fully utilized, the utilization rate of hot water can be improved, and energy waste can be reduced.

[0102] In step S209, the heating module is controlled to heat the mixed water from the target mixed water temperature to the target outlet water temperature based on the preset upper limit power, and hot water is released based on the target maximum total flow rate when the mixed water is heated to the target outlet water temperature.

[0103] In one specific embodiment, the heating module can be a module for heating mixed water, and specifically, the maximum operating power of the heating module can be a preset upper limit power.

[0104] In one specific embodiment, during the process of heating the mixed water from the target mixed water temperature T1 to the target outlet water temperature T2, the heating module can be controlled to heat the mixed water from the target mixed water temperature T1 to the target outlet water temperature T2 based on a preset upper limit power, and when the mixed water is heated to the target outlet water temperature T2, based on the target maximum total flow rate q max Release the hot water.

[0105] It should be noted that the order of the embodiments described above is merely for descriptive purposes and does not represent the superiority or inferiority of the embodiments. Furthermore, specific embodiments have been described above. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps described in the claims can be performed in a different order than that shown in the embodiments and still achieve the desired result. Additionally, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result.

[0106] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

[0107] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0108] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A water purifier, characterized in that, include: Water purification module; The water purification module is used to purify water quality, and the outlet of the water purification module is connected to the inlet of the vacuum heat storage tank. The vacuum thermal storage tank is used to store hot water. The outlet of the vacuum thermal storage tank is connected to the inlet of the vacuum thermal storage tank via a hot water pump and a heating module. The heating module is used to circulate and heat the hot water stored in the vacuum thermal storage tank. The mixing chamber is used to mix the cold water flowing out of the water purification module with the hot water flowing out of the vacuum heat storage tank before it flows into the hot water pump.

2. The water purifier according to claim 1, characterized in that, The water purifier also includes a first temperature sensor, a second temperature sensor, a third temperature sensor, and a fourth temperature sensor. The first temperature sensor is used to measure the temperature of the mixed water flowing out of the mixing chamber, the second temperature sensor is used to measure the temperature of the hot water flowing out of the heating module, the third temperature sensor is used to measure the temperature of the hot water flowing out of the vacuum storage tank, and the fourth temperature sensor is used to measure the temperature of the cold water flowing out of the water purification module.

3. The water purifier according to claim 1, characterized in that, The outlet of the heating module is connected to the inlet of the vacuum heat storage tank via a hot water return valve. The hot water return valve is used to return the hot water flowing out of the heating module to the vacuum heat storage tank.

4. A heating control method based on any one of the water purifiers described in claims 1 to 3, characterized in that, The method includes: In response to a hot water supply command carrying a target outlet water temperature, the target maximum total flow rate, the current cold water temperature at the outlet of the water purification module, and the current hot water temperature in the vacuum storage tank are determined. The target mixed water temperature is obtained based on the target outlet water temperature and the target maximum total flow rate; Based on the target maximum total flow rate, the target mixing temperature, the current cold water temperature, and the current hot water temperature, the target cold water flow rate and the target hot water flow rate are obtained; The cold water from the outlet of the water purification module and the hot water from the vacuum heat storage tank are mixed according to the target cold water flow rate and the target hot water flow rate, respectively, to obtain mixed water with a temperature of the target mixed water temperature; The heating module is controlled to heat the mixed water from the target mixed water temperature to the target outlet water temperature based on a preset upper limit power, and hot water is released based on the target maximum total flow rate when the mixed water is heated to the target outlet water temperature.

5. The heating control method according to claim 4, characterized in that, In the process of releasing hot water based on the target maximum total flow rate, the method further includes: If the current hot water temperature drops to the target mixing temperature, the target maximum total flow rate is reduced so that the current hot water temperature reaches the target mixing temperature.

6. The heating control method according to claim 4, characterized in that, The determination of the target maximum total flow rate in response to a hot water supply command carrying a target outlet water temperature includes: In response to a hot water supply command carrying a target outlet water temperature, a preset total flow range is determined; Based on the target outlet water temperature and at least one preset flow rate value within the preset total flow rate range, the mixing water temperature corresponding to each of the at least one preset flow rate value is obtained; From the mixing temperatures corresponding to at least one preset flow rate value, determine at least one mixing temperature that is lower than the current hot water temperature; The maximum preset flow rate value among the preset flow rate values ​​corresponding to the at least one mixing temperature is taken as the target maximum total flow rate.

7. The heating control method according to claim 4, characterized in that, The method further includes: During the process of releasing hot water based on the target maximum total flow rate, the current hot water output of the hot water in the vacuum storage tank is obtained; Based on the current hot water output, cold water is added to the vacuum storage tank.

8. The heating control method according to claim 4, characterized in that, The method further includes: Obtain the preset water storage temperature; In the absence of a hot water supply instruction, the current operating power of the heating module is determined based on the current hot water temperature and the preset storage water temperature. The heating module is controlled to heat the hot water in the vacuum storage tank based on the current operating power, and then stores it in the vacuum storage tank.

9. The heating control method according to claim 8, characterized in that, Determining the current operating power of the heating module based on the current hot water temperature and the preset storage water temperature includes: When the current hot water temperature reaches the preset water storage temperature, the current operating power of the heating module is determined based on the preset water storage temperature and the current hot water temperature. If the current hot water temperature is lower than the preset storage water temperature, the current power of the heating module is determined to be the preset upper limit power.

10. The heating control method according to claim 4, characterized in that, The step of mixing cold water from the outlet of the water purification module and hot water from the vacuum heat storage tank according to the target cold water flow rate and the target hot water flow rate, respectively, to obtain mixed water at the target mixed water temperature includes: Based on the target maximum total flow rate and the target cold water flow rate, the target adjustment amount of the flow regulating valve in the water purifier is obtained; The flow regulating valve is adjusted based on the target adjustment amount so that the cold water in the outlet of the water purification module and the hot water in the vacuum heat storage tank are mixed according to the target cold water flow rate and the target hot water flow rate, respectively, to obtain mixed water with a temperature of the target mixed water temperature.

Images