Drinking water supply device and control method thereof

Abstract

The application discloses a kind of drinking water supply device and its control method, it relates to water supply device technical field, the control method of the drinking water supply device includes: when needing to output hot water, judge whether to satisfy first preset condition;If satisfying first preset condition, output hot water and cold water, in this process, increase the total output of hot water and / or reduce the total output of cold water;The temperature of the hot water is between the temperature of the cold water and the temperature of the hot water.This application can solve the problem that the temperature of the first cup of hot water is low when the drinking water supply device outputs again after not outputting hot water or hot water for a period of time.

Description

Drinking water supply equipment and its control methods Technical Field

[0001] This invention relates to the field of water supply equipment technology, and in particular to a drinking water supply device and its control method. Background Technology

[0002] Modern drinking water supply systems not only provide cold and hot water to meet user needs, but also offer warm water to further enhance the user experience. When dispensing warm water, the system can simultaneously dispense cold and hot water in a specific ratio, ensuring the user receives warm water.

[0003] However, if users do not use the drinking water supply device to dispense hot or warm water for a period of time, the first cup of warm water dispensed will be colder than usual. This is especially noticeable in winter when the weather is cold, resulting in a poor user experience. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the embodiments of the present invention is to provide a drinking water supply device and its control method, which can solve the problem that the temperature of the first cup of warm water output by the drinking water supply device after a period of no output of hot or warm water is too low.

[0005] The specific technical solution of this invention is as follows:

[0006] A method for controlling a drinking water supply device, the method comprising:

[0007] When warm water needs to be output, determine whether the first preset condition is met;

[0008] If the first preset condition is met, hot water and cold water are output. During this process, the total output of hot water is increased and / or the total output of cold water is decreased; the temperature of the warm water is between the temperature of the cold water and the temperature of the hot water.

[0009] Preferably, the first preset condition includes at least one of the following: the time interval between the last supply of hot or warm water exceeds a first preset time, or the temperature of the water in the first pipeline is lower than a preset temperature;

[0010] When the first preset condition includes the water temperature in the first pipeline being lower than a preset temperature, the drinking water supply device includes: a hot water supply unit for outputting hot water; the hot water supply unit is connected to the water output mechanism through the first pipeline.

[0011] Preferably, when the first preset condition includes a time interval between the last supply of hot or warm water exceeding a first preset time, the first preset time is a fixed value or dynamically adjusted.

[0012] Preferably, when the value of the first preset time is dynamically adjusted, the value of the first preset time is related to at least one of the following factors: season, ambient temperature, cold water temperature, and the type or temperature of water output by the drinking water supply device in the last instance.

[0013] Preferably, the first preset time is positively correlated with the ambient temperature;

[0014] The first preset time is positively correlated with the cold water temperature;

[0015] The first preset time is positively correlated with the ambient temperature;

[0016] When the season is summer, the value of the first preset time increases; when the season is winter, the value of the first preset time decreases.

[0017] The first preset time is positively correlated with the temperature of the water output from the previous drinking water supply device;

[0018] When the type of water output by the drinking water supply device in the last time was hot water, the value of the first preset time is increased; when the type of water output by the drinking water supply device in the last time was cold water, the value of the first preset time is decreased.

[0019] Preferably, the control method for the drinking water supply device further includes:

[0020] If the first preset condition is not met, hot and cold water will be output normally.

[0021] Preferably, the normal output of hot and cold water in the steps includes:

[0022] The temperature of the cold water is obtained, and the total amount of hot water to be output and / or the total amount of cold water to be output is determined based on the temperature of the cold water, the temperature of the hot water to be output, and the temperature of the warm water to be output.

[0023] Preferably, when the flow rate of hot water output is a constant and the flow rate of cold water output is a constant, the total amount of hot water output and the total amount of cold water output are controlled by controlling the time of hot water output and the time of cold water output.

[0024] Preferably, the step of increasing the total output of hot water includes at least one of the following methods: increasing the power of the first pump device for outputting hot water, increasing the opening of the first valve device for outputting hot water, and advancing the time of hot water output.

[0025] Preferably, the step of reducing the total output of cold water includes at least one of the following methods: delaying the output time of cold water, reducing the opening degree of the second valve device for outputting cold water, and reducing the power of the second pump device for outputting cold water.

[0026] Preferably, hot water and cold water are output, and in the early stage of this process, the total output of hot water is increased and / or the total output of cold water is decreased.

[0027] Preferably, the step of outputting hot and cold water includes:

[0028] The temperature of the cold water is obtained, and the total amount of hot water to be output and / or the total amount of cold water to be output is determined based on the temperature of the cold water, the temperature of the hot water to be output, and the temperature of the warm water to be output.

[0029] A drinking water supply device employing a control method for any of the drinking water supply devices described above, the drinking water supply device comprising:

[0030] A hot water supply unit for outputting hot water, wherein the hot water supply unit is connected to the water output mechanism via a first pipeline;

[0031] A cold water supply unit for outputting cold water, wherein the cold water supply unit is connected to the water output mechanism.

[0032] Preferably, the drinking water supply device further includes a first pump device, and the hot water supply unit is connected to the water output mechanism through the first pump device and the first pipeline.

[0033] Preferably, the cold water supply unit includes: a water purification unit and a second pump device for pressurizing the water purification unit;

[0034] In the step of reducing the total output of cold water, when the time for outputting cold water is delayed, the time for outputting cold water is delayed by delaying the start-up of the second pump device.

[0035] Preferably, a second valve device capable of adjusting the opening degree is connected between the outlet of the cold water supply unit and the water output mechanism.

[0036] Preferably, a first valve device capable of adjusting the opening degree is connected between the outlet of the hot water supply unit and the water output mechanism.

[0037] Preferably, the outlet of the cold water supply unit can be connected to the hot water supply unit, and the hot water supply unit includes a water storage device or an instant heating device capable of heating water.

[0038] Preferably, the cold water supply unit further includes: an inlet valve, the outlet of which is connected to the inlet of the water purification unit;

[0039] In the step of reducing the total output of cold water, when the time for delaying the output of cold water is included, the time for outputting cold water is delayed by delaying the opening of the inlet valve.

[0040] Preferably, the drinking water supply device includes:

[0041] The water output mechanism outputs cold water and hot water respectively using a concentric water output method.

[0042] Preferably, the water output mechanism includes a first water outlet pipe and a second water outlet pipe disposed within the first water outlet pipe. A first water outlet channel is formed between the inner sidewall of the first water outlet pipe and the outer sidewall of the second water outlet pipe, and a second water outlet channel is formed within the second water outlet pipe. The hot water supply unit can be connected to one of the first water outlet channel and the second water outlet channel through a first pipeline, and the cold water supply unit can be connected to the other of the first water outlet channel and the second water outlet channel.

[0043] The technical solution of the present invention has the following significant beneficial effects:

[0044] By employing the control method of the drinking water supply device in this application, when warm water needs to be output and the first preset condition is met, i.e., the water in the first pipeline has cooled to a certain low temperature, the total output of hot water and / or the total output of cold water can be increased during the process of outputting hot and cold water to supply warm water to the user. This compensates for the water in the first pipeline that has cooled to a certain extent, raising the temperature of the warm water formed by the mixture of hot and cold water to the required output temperature compared to the original. This ensures the accuracy of the temperature of the warm water output by the drinking water supply device at all times, and avoids the problem of the first cup of warm water being too low in temperature after a period of no hot water output or after the first cup of warm water is output again, thereby improving the user experience.

[0045] Specific embodiments of the invention are disclosed in detail below with reference to the description and accompanying drawings, indicating how the principles of the invention can be employed. It should be understood that the embodiments of the invention are not therefore limited in scope. Features described and / or shown for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. Attached Figure Description

[0046] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of the invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, guided by the teachings of this invention, can select various possible shapes and proportions to implement the invention according to specific circumstances.

[0047] Figure 1 is a flowchart of the steps of the control method of the drinking water supply device in an embodiment of the present invention;

[0048] Figure 2 is a schematic diagram of the drinking water supply device in the first embodiment of the present invention;

[0049] Figure 3 is a schematic diagram of the drinking water supply device in a second embodiment of the present invention;

[0050] Figure 4 is a schematic diagram of the drinking water supply device in the third embodiment of the present invention;

[0051] Figure 5 is a schematic diagram of the drinking water supply device in the fourth embodiment of the present invention;

[0052] Figure 6 is a system schematic diagram of the drinking water supply device in the fifth embodiment of the present invention;

[0053] Figure 7 is a schematic diagram of the water output mechanism using the concentric water output method in an embodiment of the present invention at the water outlet.

[0054] The reference numerals in the above figures are as follows:

[0055] 1. Water output mechanism; 11. First water outlet pipe; 12. Second water outlet pipe; 13. First water outlet channel; 14. Second water outlet channel; 2. Hot water supply unit; 21. First pipeline; 22. Exhaust pipeline; 23. First pump device; 24. Water storage device; 25. First valve device; 26. Instantaneous heating device; 3. Cold water supply unit; 31. Water purification unit; 32. Inlet valve; 33. Pre-filter unit; 34. Post-filter unit; 35. Return water path; 351. First check valve; 36. Wastewater path; 361. Combination valve; 37. Backflow water path; 371. Second check valve; 38. Second pump device; 39. Third check valve; 310. Second valve device; 4. On / off valve. Detailed Implementation

[0056] The details of the present invention can be more clearly understood by referring to the accompanying drawings and the description of specific embodiments. However, the specific embodiments of the present invention described herein are for illustrative purposes only and should not be construed as limiting the invention in any way. Under the teachings of this invention, those skilled in the art can conceive of any possible modifications based on the invention, all of which should be considered within the scope of the invention. It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there may be an intervening element. The terms "mounted," "connected," and "connected" should be interpreted broadly, for example, they can refer to mechanical or electrical connections, or internal communication between two elements, and can be direct or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only embodiments.

[0057] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0058] To address the issue of low initial temperature water output from a drinking water supply device after a period of inactivity, this application proposes a drinking water supply device and its control method. Figure 2 is a schematic diagram of the drinking water supply device in a first embodiment of this invention. As shown in Figure 2, the drinking water supply device may include: a hot water supply unit 2 for outputting hot water, which is connected to a water output mechanism 1 via a first pipe 21; and a cold water supply unit 3 for outputting cold water, which is also connected to the water output mechanism 1. When the hot water supply unit 2 supplies hot water to the water output mechanism 1 solely through the first pipe 21, the water output mechanism 1 can output hot water for the user. When the cold water supply unit 3 supplies cold water to the water output mechanism 1 solely, the water output mechanism 1 can output cold water for the user. When the hot water supply unit 2 supplies hot water to the water output mechanism 1 via the first pipe 21, and simultaneously, the cold water supply unit 3 supplies cold water to the water output mechanism 1, the water output mechanism 1 can supply warm water to the user. The specific temperature of the warm water can be determined by the ratio of hot to cold water, and the temperatures of the hot and cold water. The water output mechanism 1 can mix cold and hot water to form warm water and then output it to the user, or it can output cold and hot water separately, which will then mix in the user's cup to form warm water.

[0059] When the water output mechanism 1 can output cold water and hot water respectively, the drinking water supply device may include: a water output mechanism. Figure 7 is a partial schematic diagram of the water output mechanism using a concentric water output method in an embodiment of the present invention at the water outlet. As shown in Figure 7, the water output mechanism outputs cold water and hot water respectively using a concentric water output method. That is, the center of the output cold water flow is basically the same as the center of the output hot water flow. Specifically, the water output mechanism may include a first water outlet pipe body 11 and a second water outlet pipe body 12 disposed in the first water outlet pipe body 11. A first water outlet channel 13 is formed between the inner side wall of the first water outlet pipe body 11 and the outer side wall of the second water outlet pipe body 12, and a second water outlet channel 14 is formed inside the second water outlet pipe body 12. The hot water supply unit 2 can be connected to one of the first water outlet channel 13 and the second water outlet channel 14 through the first pipe 21, and the cold water supply unit 3 can be connected to the other of the first water outlet channel 13 and the second water outlet channel 14.

[0060] As an alternative, Figure 5 is a system schematic diagram of the drinking water supply device in the fourth embodiment of the present invention, and Figure 6 is a system schematic diagram of the drinking water supply device in the fifth embodiment of the present invention. As shown in Figures 5 and 6, the hot water supply unit 2 may include a water storage device 24 or an instant heating device 26 capable of heating water, or a water storage device 24 capable of storing hot water. Of course, the hot water supply unit 2 may also adopt other forms of devices, as long as they can output and supply hot water. When the water storage device 24 can be connected to the water output mechanism 1 through the exhaust pipe 22, the exhaust pipe 22 is used to discharge the water vapor generated when the water storage device 24 heats water.

[0061] As an alternative, the cold water supply unit 3 may include a water storage device 24 capable of storing and discharging cold water, or a device capable of directly discharging cold water, as long as it can supply cold water. For example, as shown in FIG6, the device capable of discharging cold water may include a water purification unit 31, which can discharge cold purified water. In other feasible embodiments, FIG5 is a system schematic diagram of the drinking water supply device in a fourth embodiment of the present invention. As shown in FIG5, the device capable of discharging cold water may also include a pipeline connected to a water source.

[0062] Figure 1 is a flowchart of the control method for a drinking water supply device in an embodiment of the present invention. As shown in Figure 1, the control method for a drinking water supply device in this application may include the following steps:

[0063] S101: When it is necessary to output warm water, determine whether the first preset condition is met.

[0064] In this step, the first preset condition indicates that the water in the first pipe 21 has cooled to a certain low temperature. At this point, the output of this water will result in a lower temperature for the first cup of warm water, affecting the user experience. Specifically, the first preset condition may include at least one of the following: the time interval since the last supply of hot or warm water exceeds a first preset time, or the temperature of the water in the first pipe 21 is lower than a preset temperature, etc. The first preset time can be the time required for the hot water in the first pipe 21 to cool to a low temperature. The preset temperature can be a set low temperature; water output at this temperature will result in a lower temperature for the first cup of warm water, affecting the user experience.

[0065] As an option, when the first preset condition includes a time interval exceeding a first preset time since the last supply of hot or warm water, the first preset time can be a fixed value or dynamically adjusted. Since various factors can affect the cooling rate of the hot water in the first pipe 21, the first preset time can be dynamically adjusted to further improve the accuracy of the first cup of warm water temperature.

[0066] When the value of the first preset time is dynamically adjusted, the value of the first preset time is related to at least one of the following factors: season, ambient temperature, cold water temperature, type or temperature of water output from the drinking water supply device last time, etc.

[0067] The first preset time can be positively correlated with the ambient temperature. The higher the ambient temperature, the slower the hot water in the first pipe 21 cools down, and the first preset time can be relatively increased. Conversely, the lower the ambient temperature, the faster the hot water in the first pipe 21 cools down, and the first preset time can be relatively decreased.

[0068] The first preset time can be positively correlated with the cold water temperature. The lower the cold water temperature, the lower the ambient temperature, and the faster the hot water in the first pipe 21 cools down, so the first preset time can be relatively reduced. The higher the cold water temperature, the higher the ambient temperature, and the slower the hot water in the first pipe 21 cools down, so the first preset time can be relatively increased.

[0069] When it is summer, the hot water in the first pipe 21 cools down more slowly, and the value of the first preset time increases. When it is winter, the hot water in the first pipe 21 cools down more quickly, and the value of the first preset time decreases.

[0070] The first preset time is positively correlated with the temperature of the water output from the previous drinking water supply device. The higher the temperature of the water output from the previous drinking water supply device, the higher the temperature of the hot water in the first pipe 21, and the longer it takes to cool down to a certain lower temperature. Therefore, the value of the first preset time can be relatively increased. Conversely, the lower the temperature of the water output from the previous drinking water supply device, the lower the temperature of the hot water in the first pipe 21, and the faster it cools down to a certain lower temperature. Therefore, the value of the first preset time can be relatively decreased.

[0071] When the drinking water supply device previously output hot water, the first preset time is increased. Because the water output is hot, hot water accumulates in the hot water outlet channel of water outlet mechanism 1, and the hot water also heats the cold water in the cold water outlet channel to some extent during output. Overall, the temperature of the water in the hot water outlet channel of water outlet mechanism 1 is relatively high; therefore, the first preset time is increased. When the drinking water supply device previously output cold water, the first preset time is decreased. Cold water cools the hot water in the hot water outlet channel during output, resulting in a relatively low temperature of the water in the hot water outlet channel of water outlet mechanism 1. Therefore, the first preset time needs to be decreased.

[0072] S102: If the first preset condition is not met, hot and cold water will be output normally.

[0073] In this step, if the first preset condition is not met when warm water needs to be output, it means that the water in the first tube is still hot water and has not cooled to a certain low temperature. At this time, the normal output of hot and cold water can form the first cup of warm water that meets the user's needs. The temperature of the first cup of warm water will not be too low, which would affect the user experience.

[0074] When it is determined that the first preset condition is not met when warm water needs to be output, it can also be said that the drinking water supply device continuously outputs hot or warm water. Therefore, the water in the first pipe has not cooled to a certain low temperature.

[0075] As a feasible approach, in order to ensure that the actual output temperature of the warm water matches the temperature of any set warm water to be output, normal output of hot and cold water may include: obtaining the temperature of the cold water, and determining the total amount of hot water to be output and / or the total amount of cold water to be output based on the temperature of the cold water, the temperature of the output hot water, and the temperature of the warm water to be output.

[0076] In the above steps, the temperature of cold water × the total amount of cold water + the temperature of hot water output × the total amount of hot water output is approximately equal to the temperature of the warm water to be output × (the total amount of hot water output + the total amount of cold water output).

[0077] As a feasible approach, when both the hot water and cold water flow rates are constant, the total amount of hot and cold water output can be controlled by adjusting the duration of hot and cold water output. Alternatively, when the hot water and / or cold water flow rates are adjustable, the total amount of hot and cold water output can be controlled by changing these flow rates. Of course, the total amount of hot and cold water output can also be controlled simultaneously by adjusting both the hot and cold water output times and by changing the flow rates of both.

[0078] S103: If the first preset condition is met, hot water and cold water are output. During this process, the total output of hot water is increased and / or the total output of cold water is decreased; the temperature of warm water is between the temperature of cold water and the temperature of hot water.

[0079] In this step, if the first preset condition is met, hot and cold water are output, allowing the user to obtain warm water resulting from the mixture of hot and cold water. The temperature of the warm water can be any temperature between the cold and hot water temperatures; it can be a fixed value or can be changed according to the user's settings. During the output of hot and cold water, the total output of hot water is increased and / or the total output of cold water is decreased. Since the water in the first pipe 21 has cooled to a certain low temperature when the first preset condition is met, the output of this portion of water will result in a lower temperature for the first cup of warm water. Therefore, hot and cold water cannot be output according to the total output of hot water and / or cold water determined in step S102. To compensate for the water in the first pipe 21 that has cooled to a certain extent, the total output of hot water can be increased and / or the total output of cold water can be decreased, thereby raising the temperature of the warm water formed by the mixture of hot and cold water to the required output temperature. This method ensures the accuracy of the temperature of the warm water output by the drinking water supply device at all times, preventing the problem of a lower temperature for the first cup of warm water after a period of no hot water output or after a period of no hot water output, thus improving the user experience.

[0080] Increasing the total output of hot water can be achieved in a variety of ways, such as including at least one of the following: increasing the power of the first pump device 23 for outputting hot water, increasing the opening of the first valve device 25 for outputting hot water, advancing the time for outputting hot water, etc.

[0081] When the total output of hot water is increased by increasing the power of the first pump device 23 used for outputting hot water, Figure 4 is a system schematic diagram of the drinking water supply device in a third embodiment of the present invention. As shown in Figure 4, the drinking water supply device includes a first pump device 23. The hot water supply unit 2 is connected to the water output mechanism 1 through the first pump device 23 and the first pipeline 21.

[0082] When the total output of hot water is increased by increasing the opening of the first valve device 25 for outputting hot water, Figure 3 is a system schematic diagram of the drinking water supply device in the second embodiment of the present invention. As shown in Figure 3, the outlet of the hot water supply unit 2 is connected to the water output mechanism 1 by a first valve device 25 that can adjust the opening.

[0083] The advance hot water output time can be a fixed value or a variable value. This variable value can be dynamically adjusted according to the season, ambient temperature, cold water temperature, and the type or temperature of the water output from the previous drinking water supply device.

[0084] The reduction of the total output of cold water can also be achieved in a variety of different ways, such as at least one of the following: delaying the output of cold water, reducing the opening of the second valve device 310 for outputting cold water, and reducing the power of the second pump device 38 for outputting cold water.

[0085] The delay time for cold water output can be a fixed value or a variable value. This variable value can be dynamically adjusted according to the season, ambient temperature, cold water temperature, and the type or temperature of water output from the previous drinking water supply device.

[0086] When the total output of cold water is reduced by decreasing the opening of the second valve device 310 used for outputting cold water, as shown in FIG3, a second valve device 310 capable of adjusting the opening can be connected between the outlet of the cold water supply unit 3 and the water output mechanism 1.

[0087] As shown in FIG4, the drinking water supply device includes a second pump device 38 when the power of the second pump device 38 used for outputting cold water is reduced to decrease the total output of cold water. The cold water supply unit 3 outputs cold water to the water output mechanism 1 under the action of the second pump device 38. Alternatively, as shown in FIG6, the cold water supply unit 3 may include a water purification unit 31 and a second pump device 38 for pressurizing the water purification unit 31. The second pump device 38 can increase the filtration rate of the water purification unit 31 to increase the output flow rate of purified water. Alternatively, when the total output of cold water is reduced by delaying the time of cold water output, the time of cold water output can be delayed by delaying the start-up of the second pump device 38. The water purification unit 31 can be any filtration unit for filtering water to produce purified water, and no limitation is made thereto in this application. Alternatively, the water purification unit 31 may include at least one of the following: a reverse osmosis membrane filtration unit, a nanofiltration membrane filtration unit, an ultrafiltration membrane filtration unit, etc. When the water purification unit 31 is a filtration unit that needs to discharge wastewater, the cold water supply unit 3 may include: a wastewater passage 36 connected to the wastewater outlet of the water purification unit 31, and a wastewater ratio device is provided on the wastewater passage 36.

[0088] As a feasible approach, if the first preset condition is met, hot and cold water can be output. In the initial stage of this process, the total output of hot water can be increased and / or the total output of cold water decreased. This initial increase in hot water output and / or decrease in cold water output during this initial period can compensate for the decrease in the initial cup of warm water temperature caused by the cooling water in the first pipe 21. After this initial stage, the drinking water supply device can output hot and cold water according to the normal output rules to form warm water. Normal output of hot and cold water can also be achieved by outputting hot and cold water in a manner that does not meet the first preset condition to form warm water, where the temperature of the warm water can be the desired temperature. Since the drinking water supply device cannot determine the total amount of warm water obtained by the user, the initial output of hot and cold water compensates for the decrease in the initial cup of warm water temperature caused by the cooling water in the first pipe 21. Therefore, regardless of the amount of warm water obtained by the user, the drinking water supply device can ensure that the temperature of the warm water obtained by the user is as accurate as possible, meeting the user's required temperature.

[0089] As a feasible step, the output of hot and cold water may include: obtaining the temperature of the cold water, and determining the total amount of hot water and / or cold water to be output based on the temperature of the cold water, the temperature of the output hot water, and the desired temperature of the output warm water. To ensure that the actual output temperature of the warm water matches the desired temperature of any set warm water, since the temperature of the cold water varies significantly with ambient temperature, season, and region, the above steps can first determine the total amount of hot water and / or cold water to be output normally when outputting warm water, based on the temperature of the cold water, the temperature of the output hot water, and the desired temperature of the output warm water. Based on this, to compensate for a certain degree of cooling in the first pipe 21, the total output of hot water can be increased and / or the total output of cold water can be decreased, thereby increasing the temperature of the mixture of hot and cold water to the desired temperature of the output warm water.

[0090] As a feasible option, as shown in Figure 6, the cold water supply unit 3 may include an inlet valve 32, the outlet of which is connected to the inlet of the water purification unit 31. The inlet valve 32 is used to connect to a water source, such as tap water. In the step of reducing the total output of cold water, when a delay in the output of cold water is included, the opening of the inlet valve 32 can also be delayed to postpone the output of cold water.

[0091] As a feasible option, as shown in Figure 6, the outlet of the cold water supply unit 3 can be connected to the hot water supply unit 2, thereby providing cold water or supplementing cold water to the hot water supply unit 2. For example, an on / off valve 4 can be installed between the outlet of the cold water supply unit 3 and the hot water supply unit 2 to control whether cold water is provided to the hot water supply unit 2 or supplemented with cold water. As a feasible option, when the cold water supply unit 3 provides cold water or supplements cold water to the hot water supply unit 2, the second valve device 310 can be in a closed state. The second valve device 310 is connected between the cold water supply unit 3 and the water output mechanism 1.

[0092] As a feasible embodiment, as shown in Figure 6, the cold water supply unit 3 may include a pre-filtration unit 33 connected upstream of the water purification unit 31. The pre-filtration unit 33 may include at least one of the following: a PP cotton filter unit, an activated carbon filter unit, and a scale inhibitor release unit. The pre-filtration unit 33 may simultaneously include a PP cotton filter unit, an activated carbon filter unit, and a scale inhibitor release unit.

[0093] As a feasible option, as shown in Figure 6, the cold water supply unit 3 may include a post-filter unit 34 connected downstream of the purified water outlet of the water purification unit 31. To prevent backflow in the post-filter unit 34, a third check valve 39 may be provided between the post-filter unit 34 and the water purification unit 31. The third check valve 39 enables the purified water outlet of the water purification unit 31 to flow towards the post-filter unit 34.

[0094] As a feasible option, as shown in Figure 6, the pre-filter unit 33 and the post-filter unit 34 can be combined in the same filter bottle, thereby reducing the number of filter bottles in the entire cold water supply unit 3.

[0095] As a feasible option, as shown in Figure 6, the purified water outlet of the water purification unit 31 or its downstream end can be connected to the upstream end of the inlet of the water purification unit 31 via a return water passage 35. A first check valve 351 can be installed on the return water passage 35 to allow the purified water outlet of the water purification unit 31 to flow to the inlet of the water purification unit 31. Generally, the return water passage 35 is connected upstream of the inlet of the pre-filter unit 33. Correspondingly, the return water passage 35, the water purification unit 31, and other filter units located between them form a circulating water passage, and the second pump device 38 can be installed on this circulating water passage. The return water passage 35 can return the purified water generated by the water purification unit 31 to the pre-filter unit 33 for storage; at this time, the water from the water source does not need to enter the pre-filter unit 33. When it is necessary to use the purified water stored in the pre-filter unit 33 to flush or replace the raw water side of the water purification unit 31, the purified water in the pre-filter unit 33 can be replaced by water from the water source, so as to flush or replace the raw water side of the water purification unit 31 with the replaced purified water. By replacing, the TDS of the first cup of water output by the water purification unit 31 after a long period of non-use can be reduced.

[0096] When the purified water outlet of the purified water unit 31 or the downstream of the purified water outlet can be connected to the upstream of the inlet of the purified water unit 31 through the return water passage 35, as shown in Figure 6, a combination valve 361 is provided on the wastewater passage 36 to replace the wastewater ratio device. The combination valve 361 can have wastewater ratio function and on / off function.

[0097] Furthermore, as shown in Figure 6, the wastewater path 36 upstream of the wastewater comparison device is connected to the upstream of the inlet of the water purification unit 31 and the downstream of the outlet of the pre-filter unit 33 via the return path 37. When the return path 35 can return the purified water generated by the water purification unit 31 to the pre-filter unit 33 for storage, the water discharged from the wastewater outlet of the water purification unit 31 can flow back into the inlet of the water purification unit 31. This can prevent the filter membrane in the water purification unit 31 from being damaged due to excessive pressure. A second one-way valve 371 can be installed on the return path 37, which allows the wastewater path 36 to flow upstream of the inlet of the water purification unit 31.

[0098] By employing the control method of the drinking water supply device in this application, when warm water needs to be output and the first preset condition is met, i.e., when the water in the first pipeline 21 has cooled to a certain low temperature, the total output of hot water and / or the total output of cold water can be increased during the process of outputting hot and cold water to supply warm water to the user. This compensates for the water in the first pipeline 21 that has cooled to a certain extent, raising the temperature of the warm water formed by the mixture of hot and cold water to the required output temperature compared to the original. This ensures the accuracy of the temperature of the warm water output by the drinking water supply device at all times, and avoids the problem of the first cup of warm water being too low in temperature after a period of no hot water output or after the first cup of warm water is output again, thereby improving the user experience.

[0099] All articles and references disclosed herein, including patent applications and publications, are incorporated herein by reference for various purposes. The term “substantially constitutes…” used to describe a combination should include the identified element, component, part, or step, as well as other elements, components, parts, or steps that do not substantially affect the essential novelty of the combination. The use of the terms “comprising” or “including” to describe combinations of elements, components, parts, or steps herein also contemplates embodiments substantially constituted by such elements, components, parts, or steps. The use of the term “may” herein is intended to indicate that any described attribute “may” include is optional. Multiple elements, components, parts, or steps can be provided by a single integrated element, component, part, or step. Alternatively, a single integrated element, component, part, or step can be divided into multiple separate elements, components, parts, or steps. The disclosure of “a” or “an” used to describe an element, component, part, or step does not imply exclusion of other elements, components, parts, or steps.

[0100] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A control method for a drinking water supply device, characterized in that, The drinking water supply device includes: a hot water supply unit for outputting hot water, the hot water supply unit being connected to a water output mechanism via a first pipeline; a cold water supply unit for outputting cold water, the cold water supply unit being connected to the water output mechanism, the cold water supply unit including a water purification unit capable of outputting cold purified water; a first pump device, the hot water supply unit being connected to the water output mechanism via the first pump device and the first pipeline; or, a first valve device capable of adjusting the opening degree, the first valve device being connected between the outlet of the hot water supply unit and the water output mechanism; the control method of the drinking water supply device includes: when it is necessary to output warm water, determining whether a first preset condition is met, the first preset condition including distance... If the time interval between supplying hot or warm water exceeds a first preset time, and if the first preset condition is met, hot and cold water are output, including: obtaining the temperature of the cold water; determining the total amount of hot water and / or the total amount of cold water to be output based on the temperature of the cold water, the temperature of the output hot water, and the temperature of the required output warm water; in the early stage of this process, increasing the total output of hot water or increasing the total output of hot water and decreasing the total output of cold water; after the early stage, outputting hot and cold water according to the normal rules to form warm water; the temperature of the warm water is between the temperature of the cold water and the temperature of the hot water; the step of increasing the total output of hot water includes the following methods: increasing the opening of the first valve device for outputting hot water and advancing the time for outputting hot water.

2. The control method for the drinking water supply device according to claim 1, characterized in that, When the first preset condition includes a time interval between the last supply of hot or warm water exceeding a first preset time, the value of the first preset time is either fixed or dynamically adjusted.

3. The control method for the drinking water supply device according to claim 2, characterized in that, When the value of the first preset time is dynamically adjusted, the value of the first preset time is related to at least one of the following factors: season, ambient temperature, cold water temperature, and the type or temperature of water output by the drinking water supply device in the last instance.

4. The control method for the drinking water supply device according to claim 3, characterized in that, The first preset time is positively correlated with the ambient temperature; the first preset time is positively correlated with the cold water temperature; the first preset time is positively correlated with the ambient temperature; when the season is summer, the value of the first preset time increases, and when the season is winter, the value of the first preset time decreases; the first preset time is positively correlated with the temperature of the water output from the drinking water supply device in the previous instance; when the type of water output from the drinking water supply device in the previous instance was hot water, the value of the first preset time increases, and when the type of water output from the drinking water supply device in the previous instance was cold water, the value of the first preset time decreases.

5. The control method for the drinking water supply device according to claim 1, characterized in that, The control method of the drinking water supply device further includes: if the first preset condition is not met, hot water and cold water are output normally.

6. The control method for the drinking water supply device according to claim 5, characterized in that, The normal output of hot and cold water includes: obtaining the temperature of the cold water, and determining the total amount of hot water to be output and / or the total amount of cold water to be output based on the temperature of the cold water, the temperature of the output hot water, and the temperature of the warm water to be output.

7. The control method for the drinking water supply device according to claim 6, characterized in that, When the flow rate of hot water output is constant and the flow rate of cold water output is constant, the total amount of hot water output and the total amount of cold water output are controlled by controlling the time of hot water output and the time of cold water output.

8. The control method for the drinking water supply device according to claim 1, characterized in that, In the process of increasing the total output of hot water, also This includes increasing the power of the first pump unit used to output hot water.

9. The control method for the drinking water supply device according to claim 1, characterized in that, The step of reducing the total output of cold water includes at least one of the following methods: delaying the output time of cold water, reducing the opening degree of the second valve device for outputting cold water, or reducing the power of the second pump device for outputting cold water.

10. The control method for the drinking water supply device according to claim 1, characterized in that, The cold water supply unit includes a water purification unit and a second pump device for pressurizing the water purification unit; in the step of reducing the total output of cold water, when the time for outputting cold water is delayed, the time for outputting cold water is delayed by delaying the start of the second pump device.

11. The control method for the drinking water supply device according to claim 1, characterized in that, A second valve device capable of adjusting the opening degree is connected between the outlet of the cold water supply unit and the water output mechanism.

12. The control method for the drinking water supply device according to claim 11, characterized in that, The outlet of the cold water supply unit can be connected to the hot water supply unit, and the hot water supply unit includes a water storage device or an instant heating device capable of heating water.

13. The control method for the drinking water supply device according to claim 10, characterized in that, The cold water supply unit further includes an inlet valve, the outlet of which is connected to the inlet of the water purification unit; in the step of reducing the total output of cold water, when the time for delaying the output of cold water is included, the time for outputting cold water is delayed by delaying the opening of the inlet valve.

14. The control method for the drinking water supply device according to claim 1, characterized in that, The drinking water supply device includes: the water output mechanism, which outputs cold water and hot water respectively in a concentric water output manner.

15. The control method for the drinking water supply device according to claim 14, characterized in that, The water output mechanism includes a first water outlet pipe and a second water outlet pipe disposed within the first water outlet pipe. A first water outlet channel is formed between the inner side wall of the first water outlet pipe and the outer side wall of the second water outlet pipe, and a second water outlet channel is formed within the second water outlet pipe. The hot water supply unit can be connected to one of the first water outlet channel and the second water outlet channel through a first pipeline, and the cold water supply unit can be connected to the other of the first water outlet channel and the second water outlet channel.

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