A cold boiled tea preparation device

Abstract

The utility model belongs to the technical field of household appliances, disclose a kind of cold boiled water preparation equipment.The cold boiled water preparation equipment includes filter mechanism, heat exchanger, thermal energy mechanism and water outlet mechanism, and the filter mechanism is provided with filter outlet;The heat exchanger includes the first flow channel and the second flow channel of heat exchange cooperation, the first flow channel can be communicated with the filter outlet at first end:thermal energy mechanism is provided with heating inlet and heating outlet, and the heating inlet can be communicated with the last end of the first flow channel, and the heating outlet can be communicated with the first end of the second flow channel, and the thermal energy mechanism includes the heating tank and instant heating component of series connection, and the heating tank has heating and water storage function;The last end of the second flow channel can be communicated with the water outlet mechanism.The cold boiled water preparation equipment can solve the problem that instant heating mode exists slow water outlet, water cannot be boiled, and can solve the problem that heating tank heating mode waiting time is long.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a device for producing boiled water. Background Technology

[0002] As users' demand for drinking water increases, existing water dispensers, in addition to providing boiled water and room temperature water, have added the function of preparing cooled boiled water to meet users' drinking needs.

[0003] In existing water dispensers, boiling water exchanges heat with room temperature water in a heat exchanger to lower the temperature of the boiling water and thus produce cooled boiled water. Current water dispensers generally use instant heating elements or heating tanks with dispensing functions to heat water. However, the instant heating element method is limited by the power of the element, resulting in slow boiling, slow water flow, or water flow exceeding the element's heating capacity, causing the water to fail to boil. The heating tank method requires the water in the tank to be fully boiled before preparing the cooled boiled water. Furthermore, if the water level in the tank is low, water needs to be added first, and then the water needs to be boiled before the cooled boiled water can be prepared. This is inefficient, results in long waiting times for users, and negatively impacts the user experience. Utility Model Content

[0004] The purpose of this utility model is to provide a device for producing boiled water that can solve the problems of slow water output and failure to boil water in instant heating methods, as well as the problem of long waiting time in heating tank methods.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A device for preparing cooled boiled water, comprising:

[0007] A filtration mechanism, wherein the filtration mechanism is provided with a filtration outlet;

[0008] The heat exchanger includes a first flow channel and a second flow channel that are configured for heat exchange, wherein the first end of the first flow channel is connected to the filter outlet.

[0009] The thermal energy mechanism is provided with a heating inlet and a heating outlet. The heating inlet can be connected to the end of the first flow channel, and the heating outlet can be connected to the beginning of the second flow channel. The thermal energy mechanism includes a heating tank and an instant heating component arranged in series. The heating tank has heating and water storage functions.

[0010] The water outlet mechanism is connected to the end of the second flow channel.

[0011] As an optional embodiment of the above-mentioned boiled water preparation equipment, the instant heating component is located upstream of the heating tank, the heating inlet is located in the instant heating component, and the heating outlet is located in the heating tank;

[0012] Alternatively, the heating tank may be located upstream of the instant heating component, the heating inlet may be located in the heating tank, and the heating outlet may be located in the instant heating component.

[0013] As an alternative to the above-mentioned boiled water preparation equipment, the heating tank is connected to an exhaust flow path, and a drive pump is provided at the outlet end of the heating tank, or an exhaust switch valve is provided on the exhaust flow path.

[0014] As an optional solution for the above-mentioned boiled water preparation equipment, a first temperature detection element is provided inside the heating tank or at the outlet end of the heating tank, and the first temperature detection element is communicatively connected to the drive pump or the exhaust switch valve.

[0015] As an optional embodiment of the aforementioned boiled water preparation equipment, the boiled water preparation equipment further includes:

[0016] The water outlet channel is connected to the heating outlet. The first end and the last end of the second channel are both connected to the water outlet channel. The connection position between the first end of the second channel and the water outlet channel is located upstream of the connection position between the last end of the second channel and the water outlet channel.

[0017] A temperature regulating valve assembly is disposed on the outlet channel or the second channel, and the temperature regulating valve assembly is used to adjust the flow rate in the second channel.

[0018] As an optional embodiment of the aforementioned boiled water preparation equipment, the boiled water preparation equipment further includes:

[0019] The sterilization channel has one end connected to the water outlet channel and the other end connected to the thermal energy mechanism or the first channel.

[0020] As an optional solution for the above-mentioned boiled water preparation equipment, the filtration mechanism includes a booster pump and at least one filter element connected in series, and the power of the booster pump is adjustable;

[0021] And / or, at least one of the filter elements is provided with a concentrate outlet, the concentrate outlet being connected to a concentrate valve, the opening of the concentrate valve being adjustable.

[0022] As an optional solution for the above-mentioned boiled water preparation equipment, the filtration mechanism further includes a concentrated water channel, which is connected to the concentrated water outlet, and the concentrated water valve is disposed in the concentrated water channel.

[0023] The first flow channel includes a main flow channel and two branch flow channels. The main flow channel is heat exchanged with the second flow channel. The end of the main flow channel can selectively connect to at least one of the branch flow channels. One of the two branch flow channels connects to the concentrate flow channel, and the other connects to the heating inlet.

[0024] As an optional solution for the aforementioned boiled water preparation equipment, the filtration mechanism includes:

[0025] Filter element;

[0026] The return flow path is connected at one end to the purified water outlet of the filter element and at the other end to the upstream of the filter element.

[0027] A reflux valve is provided in the reflux path, and the opening degree of the reflux valve is adjustable or its opening and closing are controllable.

[0028] As an alternative to the aforementioned boiled water preparation equipment, a first switching valve or a first flow regulating valve is provided at the beginning of the first flow channel.

[0029] The beneficial effects of this utility model are:

[0030] In the cooled boiled water production device provided by this utility model, room temperature purified water and boiling water exchange heat in a heat exchanger, causing the boiling water to cool down and become cooled boiled water, thus realizing the preparation of cooled boiled water using boiled water and ensuring drinking water health; through the cooperation of heating tank and heating components, the power requirement of instant heating components can be reduced, ensuring that the water flowing out of the heating outlet is always boiling water, and by storing hot water in the heating tank, continuous water production for a certain period of time can be achieved to meet the user's large flow demand, without the need for frequent water replenishment, and the user's waiting time is short. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the boiled water preparation device provided in Embodiment 1 of this utility model;

[0032] Figure 2 This is a schematic diagram of the structure of the boiled water preparation device provided in Embodiment 2 of this utility model;

[0033] Figure 3 This is a schematic diagram of the structure of the boiled water preparation device provided in Embodiment 3 of this utility model;

[0034] Figure 4 This is a schematic diagram of the structure of the boiled water preparation device provided in Embodiment 4 of this utility model;

[0035] Figure 5 This is a first structural schematic diagram of the boiled water preparation device provided in Embodiment 5 of this utility model;

[0036] Figure 6 This is a second structural schematic diagram of the boiled water preparation device provided in Embodiment 5 of this utility model;

[0037] Figure 7 This is a schematic diagram of the third structure of the boiled water preparation device provided in Embodiment 5 of this utility model.

[0038] In the picture:

[0039] 10. Filtration mechanism; 101. First filtration flow path; 102. Second filtration flow path; 103. Return flow path; 104. Concentrate flow path; 11. Pre-filter element; 12. Fine filter element; 13. Post-filter element; 14. Booster pump; 15. Concentrate valve; 16. Second switching valve; 17. Return valve; 18. Check valve; 20. Heat exchanger; 21. First flow path; 211. Main flow path; 212. First branch; 213. Second branch; 22. Second flow path; 23. First switching valve; 24. First valve assembly; 30. Thermal energy mechanism; 32. Heating tank; 321. Exhaust path; 322. Exhaust switch valve; 33. Drive pump; 36. Instant heating component; 40. Normal temperature water channel; 41. Normal temperature water switch valve; 50. Water outlet channel; 51. Temperature control valve; 70. Water outlet mechanism; 80. Sterilization channel; 81. Second valve assembly. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0041] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0044] Example 1

[0045] This embodiment provides a device for preparing cooled boiled water for user consumption. In this embodiment, the device can be an under-sink water purifier. In other embodiments, the device can be any other device that has the function of preparing cooled boiled water.

[0046] like Figure 1 As shown, the cooled boiled water production equipment includes a filtration mechanism 10, a heat exchanger 20, and a thermal energy mechanism 30. The filtration mechanism 10 is provided with a raw water inlet and a filter outlet. Raw water enters the filtration mechanism 10 through the raw water inlet and is filtered to obtain purified water, which flows out through the filter outlet. The heat exchanger 20 includes a first flow channel 21 and a second flow channel 22 that cooperate in heat exchange. The thermal energy mechanism 30 is provided with a heating inlet and a heating outlet and is used to heat water. The first end of the first flow channel 21 can be connected to the filter outlet to allow purified water to enter. The end of the first flow channel 21 is connected to the heating inlet so that the purified water enters the thermal energy mechanism 30 for heating and is then output as boiled water through the heating outlet. The first end of the second flow channel 22 can be connected to the heating outlet so that at least part of the boiled water can enter the second flow channel 22 to exchange heat with the water in the first flow channel 21, cooling the boiled water to form cooled boiled water. The prepared cooled boiled water is output through the end of the second flow channel 22 for use.

[0047] In this embodiment, the cooled boiled water preparation equipment first enters the first flow channel 21 of the heat exchanger 20 after being filtered by the filtration mechanism 10. This serves as the cold-end heat exchange medium of the heat exchanger 20, providing cooling. Water flowing out of the first flow channel 21 is heated to boiling water in the thermal energy mechanism 30. The boiling water then enters the second flow channel 22, serving as the hot-end heat exchange medium of the heat exchanger 20. Through heat exchange between the first and second flow channels 21 and 22, the boiling water in the second flow channel 22 is cooled to a temperature that meets the user's needs, and is then supplied to the user through the end of the second flow channel 22. Meanwhile, the room-temperature purified water in the first flow channel 21 absorbs heat and heats up. This heated water then enters the thermal energy mechanism 30 for preheating, preventing heat waste and reducing the heating power of the thermal energy mechanism 30, thus avoiding energy waste.

[0048] In this embodiment, boiling water is cooled through heat exchange to form cooled boiled water, ensuring that the boiled water consumed by the user is cooled boiled water, thus guaranteeing drinking hygiene and providing the user with truly cooled boiled water.

[0049] To better meet users' needs for cooled boiled water temperature, the heating outlet is connected to a water outlet channel 50. The first and last ends of the second channel 22 are both connected to the water outlet channel 50, with the first end of the second channel 22 upstream of the last end. In other words, the boiling water flowing from the heating outlet is divided into two streams. One stream enters the second channel 22 through the water outlet channel 50, where it is heated and cooled. The cooled boiled water then flows back to the water outlet channel 50 through the last end of the second channel 22 and mixes with the other stream of boiling water to create cooled boiled water at different temperatures.

[0050] To achieve adjustable temperature of the cooled boiled water output from the outlet channel 50, the cooled boiled water production equipment also includes a temperature regulating valve assembly. The temperature regulating valve assembly can be installed on the outlet channel 50 or the second channel 22 to adjust the flow rate of the boiling water diverted to the second channel 22, thereby adjusting the mixing ratio of the cooled boiled water and the boiling water after cooling through the second channel 22, thus achieving temperature regulation of the final output cooled boiled water.

[0051] Optionally, the boiled water preparation equipment also includes a water outlet mechanism 70, which is provided with a water outlet. The water outlet channel 50 is connected to the water outlet mechanism 70 so as to supply the prepared boiled water to the user through the water outlet.

[0052] To better meet user needs, the boiled water purification equipment also includes a room temperature water channel 40, which is connected to the filter outlet and the water outlet mechanism 70. A room temperature water switch valve 41 is installed on the room temperature water channel 40 to control the opening and closing of the room temperature water channel 40. The water outlet mechanism 70 has at least two outlets so that boiled water and room temperature purified water can flow out through different outlets, separating boiled water from raw water, ensuring drinking hygiene, and improving the user experience.

[0053] To ensure that the heating mechanism 30 can boil water and shorten the preparation time of cooled boiled water, in this embodiment, the heating mechanism 30 includes a heating tank 32 and an instant heating component 36 arranged in series. The heating tank 32 has heating and water storage functions, and the instant heating component 36 can heat water quickly and continuously dispense water. Through the cooperation of the heating tank 32 and the instant heating component 36, the power requirement of the instant heating component 36 can be reduced, ensuring that the water flowing out of the heating outlet is always boiling water. Moreover, by storing hot water in the heating tank 32, continuous water production for a certain period of time can be achieved to meet the user's demand for large flow rates, eliminating the need for frequent water replenishment and reducing user waiting time.

[0054] like Figure 1As shown, in this embodiment, the heating tank 32 is located upstream of the instant heating component 36. The heating inlet is located on the heating tank 32, and the heating outlet is located on the instant heating component 36. The purified water passing through the first flow channel 21 first enters the heating tank 32, where it is stored and heated. When the user needs hot water or to prepare cooled boiled water, the hot water in the heating tank 32 is further heated into boiling water by the instant heating component 36. The boiling water then enters the water outlet mechanism 70 or the second flow channel 22 for heat exchange.

[0055] When boiling water or cooled boiled water is needed, purified water first enters the heating tank 32 and is heated by the heating tank 32 to raise the temperature of the purified water from room temperature. The heated water then passes through the instant heating component 36 for further heating. The heat required by the instant heating component 36 is much less than that required for room temperature water to pass directly through the instant heating component 36. On the one hand, this ensures that the hot water is boiled after passing through the instant heating component 36, thus meeting the needs for drinking boiled water and preparing truly cooled boiled water. On the other hand, the heating tank 32 can maintain the water inside within a certain temperature range in standby mode, improving heating efficiency and enabling a continuous and stable output of boiling water, avoiding problems such as water not boiling or slow supply of boiling water with low flow rate.

[0056] Optionally, the instant heating component 36 is a thick-film heating element. A thick-film heating element can convert electrical energy into heat energy, has a large heating area, and can improve heating efficiency. Thick-film heating elements are existing structures in the art and will not be described in detail here.

[0057] It should be noted that when the user needs hot water, the filter mechanism 10 does not need to be activated. The heating tank 32 is activated to heat the water inside and continues to heat it. The heating component 36 can be activated or not activated as needed. Hot water flows through the water outlet channel 50 to the water outlet mechanism 70 to supply hot water to the user.

[0058] To facilitate the entry of water from the heating tank 32 into the instant heating component 36 for further heating, a drive pump 33 is installed at the outlet end of the heating tank 32, and the drive pump 33 is connected to the instant heating component 36. When the drive pump 33 is started, it can drive the hot water in the heating tank 32 into the instant heating component 36, providing power for the flow of hot water to ensure continuous water supply.

[0059] To ensure that the continuous water production flow rate meets user needs, water can be added to the heating tank 32 when the water level is insufficient. At the same time, the heating tank 32 and the instant heating component 36 are not stopped, thus achieving continuous water production while adding water, further increasing the total water production.

[0060] It should be noted that, in order to ensure that the hot water in the heating tank 32 can be boiled after passing through the instant heating component 36, whether or not water is added, a first temperature detection element is provided in the heating tank 32 or at the outlet end of the heating tank 32. The first temperature detection element is used to detect the temperature of the hot water in the heating tank 32, and the first temperature detection element is communicatively connected to the drive pump 33.

[0061] It is understandable that the heating power of the instant heating component 36 is limited. In order to ensure that the water passing through the instant heating component 36 is boiling water, when the water temperature in the heating tank 32 drops to a certain level (e.g., the first preset water temperature), the hot water in the heating tank 32 cannot be boiled after being heated by the instant heating component 36. At this time, the drive pump 33 is turned off, the preparation of boiled water is paused, and the heating tank 32 continues to heat until the water in the heating tank 32 is heated to a higher temperature (e.g., the second preset water temperature, which is higher than the first preset water temperature), thereby ensuring that the hot water at the second preset water temperature can be heated to boiling water after being heated by the instant heating component 36.

[0062] The first preset temperature and the second preset temperature can be set according to parameters such as the power of the instant heating component 36, and there are no restrictions here.

[0063] Optionally, the first temperature sensing element can be a thermistor or other sensor, as long as it can detect the temperature of the hot water in the heating tank 32.

[0064] To achieve precise control over the final temperature of the cooled boiled water, such as Figure 1 As shown, the temperature control valve assembly includes a temperature control valve 51 disposed on the water outlet channel 50, and the temperature control valve 51 is connected to the end of the second channel 22. The temperature control valve 51 is a two-inlet, one-outlet valve, capable of adjusting the flow rate of boiling water passing through the temperature control valve 51 in the water outlet channel 50, thereby regulating the proportion of cooled boiled water passing through the second channel 22, and ultimately controlling the final output water temperature.

[0065] Specifically, the water outlet channel 50 includes an upstream flow path and a downstream flow path, and the temperature regulating valve 51 includes a first inlet, a second inlet, and a valve outlet. The first inlet is connected to the upstream flow path, the second inlet is connected to the end of the second flow path 22, and the valve outlet is connected to the downstream flow path. Both the first and second inlets can be connected to the valve outlet, and the opening degree of the first inlet is inversely proportional to the opening degree of the second inlet. That is, when the opening degree of the first inlet is increased, the flow rate of hot water in the upstream flow path through the temperature regulating valve 51 to the downstream flow path increases. Correspondingly, the opening degree of the second inlet decreases, reducing the flow rate of hot water entering the second flow path 22. Ultimately, the temperature of the hot water and cooled boiled water mixed at the temperature regulating valve 51 is relatively high. Conversely, when the opening of the second inlet is increased, the proportion of boiling water in the upstream flow path entering the second flow channel 22 increases. Correspondingly, the opening of the first inlet decreases, and the flow rate of boiling water in the upstream flow path through the temperature regulating valve 51 to the downstream flow path decreases. As a result, the temperature of the boiling water and cooled boiled water mixed at the temperature regulating valve 51 is relatively low.

[0066] When a user needs hot water, the temperature control valve 51 adjusts the opening of the first inlet to the maximum, and correspondingly, the second inlet closes, so that all the hot water flowing out of the heating outlet passes through the first inlet, flows through the water outlet channel 50 to the water outlet mechanism 70, and realizes the supply of hot water.

[0067] It should be noted that the temperature control valve 51 is an existing structure in the field. The structure and adjustment principle of the temperature control valve 51 can adopt any structure and principle in the existing technology, which will not be elaborated here.

[0068] To accurately control the outlet water temperature, a second temperature sensor is installed downstream of the temperature regulating valve 51 in the outlet water channel 50. The second temperature sensor is communicatively connected to the temperature regulating valve 51. The second temperature sensor can detect the water temperature flowing out of the valve outlet. By comparing the detected water temperature with the target temperature set by the user, it can provide feedback to adjust the opening degree of the first inlet and the second inlet in the temperature regulating valve 51, thereby adjusting the mixing ratio of boiling water and cooled boiled water, and thus accurately controlling the outlet water temperature.

[0069] Optionally, the boiled water production equipment also includes a controller. The temperature regulating valve 51 and the second temperature detection element are both electrically connected to the controller. The second temperature detection element transmits the detected temperature information to the controller. The controller adjusts the opening of the temperature regulating valve 51 according to the received temperature information to accurately control the outlet water temperature.

[0070] Optionally, the controller can be a centralized or distributed controller. For example, the controller can be a single microcontroller or a combination of multiple distributed microcontrollers. The microcontroller can run a control program to control the temperature regulating valve 51 based on the detected water temperature.

[0071] It should be noted that the first temperature sensing element is existing technology in this field, and the first temperature sensing element can be a thermistor or the like, which is also existing technology in this field.

[0072] It is worth noting that the connection relationship, specific structure, and specific control method of the controller with other components are all conventional methods in the field. This utility model can adopt any of the connection relationship, specific structure, and specific control method of the controller with other components in the prior art. This utility model will not provide a detailed description of the connection relationship, specific structure, and specific control method of the controller with other components.

[0073] In some other embodiments, the temperature control valve assembly may include a flow regulating valve, which is disposed on the second flow channel 22, or disposed on the outlet flow channel 50 and located downstream of the first end of the second flow channel 22 and upstream of the end end of the second flow channel 22. By adjusting the flow rate of the flow channel, the boiling water flowing out of the heating outlet is quantitatively diverted.

[0074] It should be noted that the flow channels or flow paths mentioned above can be formed by pipes or other structures, as long as the above-mentioned connection state can be achieved. No restrictions are imposed here.

[0075] It is understandable that the heat exchanger 20 uses purified water filtered by the filter mechanism 10 as a cold source during heat exchange. The final temperature of the cooled boiled water required by the user and the total flow rate of the boiled water supplied by the heating outlet determine the cooling capacity required by the heat exchanger 20. However, the temperature of the purified water supplied by the filter outlet varies in different seasons, resulting in different cooling capacity provided per unit volume of purified water. Therefore, if the flow rate in the first flow channel 21 remains constant, one scenario is that the cooling capacity provided by the first flow channel 21 is insufficient, resulting in a higher temperature of the cooled boiled water prepared by the second flow channel 22. Ultimately, the temperature of the cooled boiled water formed after mixing with the boiled water is higher than the temperature required by the user. The second scenario is that the cooling capacity provided by the first flow channel 21 is excessive, resulting in a waste of some purified water resources in the first flow channel 21.

[0076] To address the aforementioned issues, in this embodiment, the filtration mechanism 10 itself has the function of adjusting the flow rate of the filtration outlet, thereby adjusting the flow rate of the purified water in the first flow channel 21 and precisely regulating the cooling capacity provided by the purified water in the first flow channel 21. This ensures sufficient cooling capacity while meeting the requirements for preparing boiled water, thus avoiding waste of purified water and cooling capacity.

[0077] like Figure 1As shown, the filtration mechanism 10 includes a booster pump 14 connected in series and at least one filter element. The booster pump 14 provides power to the water, driving it to pass through the filter element for filtration. In this embodiment, one of the filter elements is a fine filter element 12, which is located downstream of the booster pump 14. The fine filter element 12 has a concentrate outlet, which is connected to a concentrate valve 15. The power of the booster pump 14 is adjustable, and the opening degree of the concentrate valve 15 is also adjustable.

[0078] It is understandable that by increasing the power of the booster pump 14, the water flow rate entering the fine filter element 12 can be increased, thereby increasing the water flow rate after filtration through the fine filter element 12, and thus increasing the flow rate entering the first flow channel 21 through the filter outlet; conversely, by decreasing the power of the booster pump 14, the water flow rate entering the fine filter element 12 can be decreased, thereby decreasing the water flow rate entering the first flow channel 21 through the filter outlet.

[0079] The booster pump 14 is a conventional structure in the filter mechanism 10. The flow rate at the filter outlet is adjusted by adjusting the power of the booster pump 14. No additional structural components are required, which helps to simplify the overall structure of the filter mechanism 10 and the boiled water production equipment, thereby reducing costs.

[0080] Understandably, the concentrate outlet of the fine filter cartridge 12 is used to discharge the concentrate generated during the filtration process. By adjusting the opening of the concentrate valve 15, the discharge rate of the concentrate during the filtration process can be controlled, thereby affecting the water filtration flow rate. When the opening of the concentrate valve 15 increases, the proportion of concentrate discharged through the concentrate valve 15 increases, and the flow rate of clean water provided by the filter outlet decreases accordingly; when the opening of the concentrate valve 15 decreases, the proportion of concentrate discharged through the concentrate valve 15 decreases, and correspondingly, the flow rate of inlet water provided by the filter outlet increases.

[0081] To improve the accuracy of flow rate regulation within the first flow channel 21, it can be adjusted according to the user's desired target temperature T of the cooled boiled water. 目标 and the initial water temperature T of the water flowing through the filtration unit 10 冷入 Adjust the power of the booster pump 14 and / or adjust the opening of the concentrate valve 15 to regulate the flow rate in the first flow channel 21.

[0082] It should be noted here that, with the total hot water flow rate at the heating outlet remaining constant, the target temperature T of the cooled boiled water required by the user will be adjusted accordingly. 目标 It can obtain the boiling water at the heating outlet and cool it down to the target temperature T. 目标 The required cooling capacity, combined with the initial water temperature T provided by the filter unit 10. 冷入The flow rate of purified water in the first flow channel 21 can be obtained. Based on this, the flow rate of the first flow channel 21 can be adjusted by the booster pump 14 and / or the concentrate valve 15. This can provide cooled boiled water at a precise temperature while avoiding problems such as water waste caused by a large flow rate of purified water in the first flow channel 21, a full water foundation for the heating mechanism 30, and insufficient heating power of the heating mechanism 30 to meet heating requirements.

[0083] The flow rate and target temperature T in the first flow channel 21 目标 It is inversely proportional to, and related to, the initial water temperature T 冷入 It is directly proportional to the user's desired target temperature T. 目标 In addition, the flow rate in the first flow channel 21 is adjusted according to the changes in purified water temperature under different seasons and geographical locations to meet user needs.

[0084] Understandably, at the target temperature T required by the user... 目标 Without changing the temperature, the opening provided by the heating outlet will be cooled to the target temperature T. 目标 The required cooling capacity remains constant. When it is summer or the local temperature is high, the initial water temperature T of the purified water after passing through the filtration unit 10 is [not specified]. 冷入 The flow rate is correspondingly higher, so to meet the cooling demand, the flow rate in the first flow channel 21 needs to be increased accordingly; conversely, when it is winter or the local temperature is low, the initial water temperature T of the purified water after passing through the filtration mechanism 10 should be lower. 冷入 The flow rate is relatively low, so to meet the cooling demand, the flow rate in the first flow channel 21 needs to be reduced accordingly to avoid wasting cooling capacity.

[0085] Similarly, the initial water temperature T of the purified water after passing through the filtration unit 10 冷入 Assuming the cooling capacity provided by a unit flow rate of purified water remains constant, when the user's target temperature T... 目标 When the temperature is large, the opening provided by the heating outlet will be cooled to the target temperature T. 目标 The required cooling capacity is relatively small; to avoid wasting cooling capacity, the flow rate in the first flow channel 21 needs to be reduced accordingly. When the user's target temperature T... 目标 When the temperature is relatively low, the opening provided by the heating outlet is cooled to the target temperature T. 目标 The required cooling capacity is relatively large, and in order to meet user needs, the flow rate in the first flow channel 21 needs to be increased accordingly.

[0086] Based on the user's desired target temperature T for cooled boiled water 目标 and the initial water temperature T of the water flowing through the filtration unit 10 冷入 Regulating the flow rate within the first flow channel 21 specifically includes:

[0087] Based on the information from heat exchanger 20, obtain the reference outlet water temperature T at the end of the first flow channel 21. 冷出 .

[0088] Based on the reference outlet water temperature T 冷出 Initial water temperature T 冷入 Total flow rate of hot water at the heating outlet (L) 总 and target temperature T 目标 Calculate the cold water flow rate L in the first flow channel 21. 冷 ;

[0089] Based on cold water flow rate L 冷 Adjust the power of the booster pump 14 and / or the opening of the concentrate valve 15.

[0090] It is understandable that the core principle of heat exchange between the first flow channel 21 and the second flow channel 22 is energy conservation and the use of temperature difference as the basic driving force for heat transfer. The greater the temperature difference between the first flow channel 21 and the second flow channel 22, the faster the heat transfer rate. As the purified water in the first flow channel 21 is heated, the temperature difference between the first flow channel 21 and the second flow channel 22 decreases, and the heat transfer rate also decreases. Theoretically, the highest limit of the water temperature at the end of the first flow channel 21 is the input water temperature at the beginning of the second flow channel 22, i.e., the boiling water temperature, but this is impossible to achieve in practice. Therefore, in actual design, the temperature at the end of the first flow channel 21 is always lower than the temperature at the beginning of the second flow channel 22. The minimum difference between the two is called the minimum temperature difference or near temperature difference. The minimum temperature difference is a key parameter in the design of the heat exchanger 20, which depends on the type of heat exchanger 20 (shell-and-tube type, plate type, etc.), structure, flow rate, fouling condition, and economic considerations. Therefore, regardless of the initial water temperature T of the water after passing through the filtration mechanism 10... 冷入 No matter how the temperature changes, the water temperature at the end of the first flow channel 21 is strictly limited by the boiling water temperature and the minimum temperature difference, and will not exceed the difference between the boiling water temperature and the minimum temperature difference.

[0091] Optionally, the outlet temperature of the water in the first flow channel 21 of the heat exchanger 20 after heat exchange with boiling water can be obtained through experiments or simulations, with the outlet water temperature T as a reference. 冷出 It can be equal to or less than the highest outlet water temperature of the first flow channel 21 obtained by experiment or simulation.

[0092] According to the principle of conservation of energy, when the purified water in the first flow channel 21 exchanges heat with the boiling water in the second flow channel 22, the heat absorbed by the first flow channel 21 is equal to the heat transferred by the second flow channel 22, that is, the following condition is met:

[0093] c×L 冷 ×t×(T 冷出 -T 冷入 = c × L 总 ×t×(T 热入 -T 目标 )×η;

[0094] Where η is the heat loss coefficient, T热入 To heat the water in the outlet.

[0095] Combined with reference outlet water temperature T 冷出 Initial water temperature T 冷入 Total flow rate of hot water at the heating outlet (L) 总 and target temperature T 目标 Calculate the cold water flow rate L in the first flow channel 21. 冷 Specifically, the cold water flow rate L 冷 satisfy:

[0096] L 冷 = (T 热入 -T 目标 )×η / (T 冷出 -T 冷入 ).

[0097] To regulate the flow rate of the first flow channel 21 via the booster pump 14 (or the concentrate valve 15), a database or functional relationship between the flow rate of the first flow channel 21 and the power of the booster pump 14 (or the opening degree of the concentrate valve 15) can be obtained through experiments or simulations. This database or functional relationship can then be stored in the boiled water production equipment so that, during actual boiled water production, the flow rate L can be adjusted accordingly. 冷 Obtain the power of booster pump 14 (or the opening degree of concentrate valve 15) to achieve accurate adjustment.

[0098] Optionally, such as Figure 1 As shown, the filtration mechanism 10 also includes a concentrate flow channel 104, which is connected to the concentrate outlet. A concentrate valve 15 is installed on the concentrate flow channel 104 to control the opening and closing of the concentrate flow channel 104.

[0099] The concentrate valve 15 is a standard component of the filter mechanism 10. Adjusting the opening of the concentrate valve 15 regulates the flow rate at the filter outlet, eliminating the need for additional structural components. This simplifies the overall structure of the filter mechanism 10 and the boiled water production equipment, thereby reducing costs. When adjusting the flow rate within the first flow channel 21, the specific opening or adjustment trend of the concentrate valve 15 can be obtained based on a preset database or function of the opening of the concentrate valve 15 and the flow rate within the first flow channel 21, or a proportional relationship.

[0100] In this embodiment, the power of the booster pump 14 is adjustable, and the opening of the concentrate valve 15 is adjustable. Through the cooperation of the booster pump 14 and the concentrate valve 15, the precise control of the water flow rate in the first flow channel 21 can be improved, thereby ensuring sufficient cooling capacity at the cold end of the heat exchanger 20 and avoiding waste of cooling capacity.

[0101] In some other embodiments, the filter mechanism 10 can achieve flow regulation in the first flow channel 21 by adjusting the power of the booster pump 14, and the concentrate valve 15 does not have an opening adjustment function; or, the filter mechanism 10 can achieve flow regulation in the first flow channel 21 by adjusting the opening of the concentrate valve 15, and the power of the booster pump 14 is not adjustable.

[0102] In this embodiment, the fine filter element 12 is a reverse osmosis filter element. The reverse osmosis filter element uses the reverse osmosis principle for filtration, which has high filtration accuracy and a high safety factor, and can ensure the health of family drinking water.

[0103] In some other embodiments, the fine filter element 12 may also be a nanofiltration element, an ultrafiltration element, or other filter element, and there is no limitation herein.

[0104] To ensure the filtration effect of the reverse osmosis filter cartridge, such as Figure 1 As shown, the filtration mechanism 10 also includes a return flow path 103 and a return valve 17. The return flow path 103 connects the purified water outlet of the reverse osmosis filter element and the inlet of the booster pump 14, allowing the purified water passing through the fine filter element 12 to flow back and flush the reverse osmosis membrane in the reverse osmosis filter element after passing through the booster pump 14, thereby removing contaminants accumulated on the reverse osmosis membrane and ensuring the filtration effect of the reverse osmosis filter element. The return valve 17 is installed on the return flow path 103 and can control the opening and closing of the return flow path 103 to activate the flushing function at appropriate times.

[0105] In some embodiments, to better control the flow rate within the first flow channel 21, the flow rate can be adjusted by opening the reflux valve 17 during the preparation of cooled boiled water. It is understood that during the normal water purification process of the filtration mechanism 10, the reflux valve 17 is closed, the reflux path 103 is not connected, and all the water filtered by the fine filter element 12 flows towards the heat exchanger 20. Consequently, the purified water flow rate within the first flow channel 21 is relatively large. By opening the reflux valve 17 during the normal filtration process of the filtration mechanism 10, some of the water filtered by the fine filter element 12 can flow back through the reflux path 103, thereby reducing the purified water flow rate within the first flow channel 21.

[0106] To achieve a wide range of flow rate regulation within the first flow channel 21, in some embodiments, the opening degree of the return valve 17 is adjustable. By adjusting the opening degree of the return valve 17, the proportion of water returning after filtration by the fine filter element 12 can be adjusted, thereby adjusting the proportion of water entering the first flow channel 21 after filtration by the fine filter element 12, thus achieving flow rate regulation within the first flow channel 21.

[0107] To prevent backflow of water in the return flow path 103, a one-way valve 18 is also provided on the return flow path 103. The one-way valve 18 allows water to flow from the outlet end of the fine filter element 12 along the return flow path 103 toward the booster pump 14, but prevents water in the return flow path 103 from flowing from the booster pump 14 toward the outlet end of the fine filter element 12.

[0108] In some other embodiments, one end of the reflux path 103 is connected to the purified water outlet of the fine filter element 12, and the other end is connected to the filter inlet of the filtration mechanism 10, which can also realize the reflux function.

[0109] To improve the final temperature of the cooled boiled water, the actual temperature of the water outlet channel 50 can be detected. The temperature control valve assembly can be adjusted based on the actual water temperature feedback to correct the temperature in real time. This ensures that the final temperature of the cooled boiled water is equal to or close to the user's target temperature, thus better meeting the user's needs.

[0110] To improve filtration efficiency, the filtration mechanism 10 includes multiple filter elements, including a pre-filter 11 and a post-filter 13. The pre-filter 11, fine filter 12, and post-filter 13 are connected in series. The raw water first passes through the pre-filter 11 for preliminary filtration, removing large particles and residual chlorine to prevent clogging and corrosion of the fine filter 12, such as preventing corrosion of the reverse osmosis membrane, thus providing a safe working environment for the fine filter 12. Then, the water passes through the fine filter 12 for further filtration, removing all dissolved ions, heavy metals, and trace substances to produce pure water. Finally, the water passes through the post-filter 13 for filtration, optimizing the taste and providing final flavor enhancement and protection, thus improving drinking water health.

[0111] like Figure 1 As shown, the inlet of the pre-filter 11 is used to introduce raw water; the pre-filter 11 and the fine filter 12 are connected by a first filtration flow path 101, and the booster pump 14 is installed on the first filtration flow path 101; the outlet end of the fine filter 12 and the post-filter 13 are connected by a second filtration flow path 102.

[0112] Optionally, a second switching valve 16 is also provided on the first filtration flow path 101. The second switching valve 16 is used to control the opening and closing of the first filtration flow path 101 to realize the start and stop control of the filtration mechanism 10. It can be understood that the pre-filter 11 can be directly connected to the tap water in the user's home. When it is necessary to filter raw water, the second switching valve 16 is opened, and the tap water enters the fine filter 12 after being filtered by the pre-filter 11, so as to simplify the structure and control.

[0113] In other embodiments, the first filtration flow path 101 may not be equipped with the second switching valve 16, which will not affect the normal operation of the filtration mechanism 10 or the preparation of cooled boiled water.

[0114] Optionally, the pre-filter 11 can be at least one of a PP cotton filter and an activated carbon filter. The PP cotton filter can filter large particulate solid impurities in the water, such as silt, rust, insect eggs, red worms, colloids, suspended solids, etc., to prevent the downstream filter from being clogged and worn. The activated carbon filter can remove residual chlorine, chloramine, discoloration, odor (such as the smell of disinfectant), some organic matter and volatile organic matter by adsorption, avoiding irreversible damage to the downstream filter.

[0115] Optionally, the post-filter 13 can be an activated carbon filter, which can adsorb trace amounts of odor in the water, improve the taste of the water, and make the water taste sweeter, fresher, and more palatable.

[0116] In some embodiments, the pre-filter 11, fine filter 12, and post-filter 13 can be combined to form a composite filter, simplifying the piping between the filters, reducing the size of the filtration mechanism 10, and making it easier to adapt to under-sink environments.

[0117] In some other embodiments, the return flow path 103 may also be connected to the purified water outlet of the post-filter cartridge 13, which may reduce the flow rate of purified water entering the first flow channel 21.

[0118] In some other embodiments, the other end of the return flow path 103 can be connected to the inlet end of the fine filter element 12, the inlet end of the pre-filter element 11, or the inlet end of the second switching valve 16, as long as the return flow path 103 can return water to the upstream of the filter element connected to it. The specific location can be set according to actual needs.

[0119] Optionally, a first switching valve 23 is provided at the beginning of the first flow channel 21. The first switching valve 23 can realize the opening and closing of the first flow channel 21 so that the first flow channel 21 can be opened when it is necessary to prepare boiling water or cooled boiled water, so that the purified water enters the heat energy mechanism 30 after passing through the heat exchanger 20. This is beneficial to drain the water in the first flow channel 21 when not preparing boiling water or cooled boiled water, avoiding the long-term presence of water and bacteria in the first flow channel 21, and preventing the supply of water that has been in the first flow channel 21 for a long time to users, which is conducive to ensuring drinking water health.

[0120] In some other embodiments, the first switching valve 23 can be replaced by the first flow regulating valve, which can control the flow rate in the first flow channel 21 while realizing the opening and closing of the first flow channel 21. When used in conjunction with the filter mechanism 10, it can achieve precise control of the flow rate in the first flow channel 21, ensure accurate final water temperature, and avoid waste of cold end water.

[0121] It is understandable that when the filter mechanism 10 produces water, reducing the flow rate in the first flow channel 21 through the first flow regulating valve may cause the booster pump 14 to become pressurized, affecting its lifespan. Therefore, when reducing the flow rate in the first flow channel 21 through the first flow regulating valve, the return valve 17 can be opened or the opening degree of the return valve 17 can be adjusted to relieve the pressure at the booster pump 14 and avoid affecting the service life of the booster pump 14.

[0122] It should be noted that the adjustment methods of adjusting the power of the booster pump 14, adjusting the opening of the concentrate valve 15, adjusting the opening or opening / closing state of the return valve 17, and adjusting the opening of the first flow regulating valve can be combined arbitrarily, and this utility model does not impose any restrictions.

[0123] Optionally, the heating tank 32 includes a heating tank body and a heating element disposed on the heating tank body. The heating element can be disposed inside the heating tank body or on the outer wall of the heating tank body, as long as it can heat the water inside the heating tank body. The heating element can be an electric heating element such as a heating resistance wire.

[0124] It is understandable that the heating tank 32 contains boiling water, which will produce steam, potentially increasing the pressure inside the heating tank 32 and compromising safety. To address this issue, the heating tank 32 is also connected to an exhaust path 321, which is connected to the heating tank body and used to expel steam from the heating tank, ensuring a balanced pressure inside the heating tank.

[0125] To simplify the structure of the boiled water production equipment, in this embodiment, the exhaust flow path 321 is connected to the water outlet mechanism 70, and the steam is discharged through the water outlet mechanism 70. There is no need to set up an additional steam exhaust structure, and no extra space is required, which helps to reduce the overall size of the machine.

[0126] Example 2

[0127] This embodiment provides a device for preparing cooled boiled water, which is a further improvement on the first embodiment.

[0128] During the preparation of cooled boiled water, the filtration mechanism 10 needs to prepare purified water and enter the first flow channel 21 to provide cooling for the cold end of the heat exchanger 20. This results in the first flow channel 21 continuously replenishing purified water to the heating tank 32 during the preparation of cooled boiled water, while the heating tank 32 does not drain water. This can easily lead to the heating tank 32 becoming full of water, affecting the normal preparation of cooled boiled water. Since the volume of the heating tank 32 is limited, and the temperature of the hot water in the heating tank 32 needs to be controlled to ensure that the water heated by the instant heating component 36 is boiling water, it is necessary to control the opening and closing of the flow between the first flow channel 21 and the heating tank 32, as well as the flow rate of purified water entering the heating tank 32, according to the actual situation.

[0129] To solve the above problems, such as Figure 2As shown, the first flow channel 21 includes a main flow channel 211 and two branch flow channels, namely a first branch 212 and a second branch 213. The main flow channel 211 is heat exchanged with the second flow channel 22. The end of the main flow channel 211 can selectively connect to at least one of the first branch 212 and the second branch 213. Among the two branch flow channels, the first branch 212 connects to the concentrate flow channel 104, and the second branch 213 connects to the heating inlet. When the water level in the heating pipe 32 is high or the hot water temperature in the heating tank 32 is low and it is not suitable to continue to add clean water to the heating tank 32, the end of the main flow channel 211 can be connected to at least the first branch 212, so that at least part of the clean water after heat exchange in the first flow channel 21 flows to the concentrate flow channel 104 through the first branch 212, reducing the clean water flowing to the heating tank 32 and preventing water overflow in the heating tank 32 or the hot water temperature in the heating tank 32 from being too low.

[0130] Optionally, a first valve assembly 24 is provided at the end of the main channel 211. The first valve assembly 24 is connected to the first branch 212 and the second branch 213 respectively. The first valve assembly 24 can be a first directional valve. Specifically, the first valve assembly 24 includes a valve inlet, a first outlet and a second outlet. The valve inlet is connected to the main channel 211, the first outlet is connected to the first branch 212, and the second outlet is connected to the second branch 213. The first valve assembly 24 can switch between being connected to the first outlet and being connected to the second outlet.

[0131] During the preparation of cooled boiled water, when the water level in heating tank 32 is low or the hot water temperature in heating tank 32 is high, water can be added to heating tank 32. This avoids wasting purified water and ensures sufficient purified water in heating tank 32. Furthermore, it ensures that the temperature of the mixed hot water in heating tank 32 will not be too low after adding purified water, thus guaranteeing that boiling water can be obtained after heating by instant heating component 36. At this time, the valve inlet of the first reversing valve is connected to the second outlet, allowing purified water in the main flow channel 211 to flow to heating tank 32 through the second branch 213. When the water level in heating tank 32 is high or the hot water temperature in heating tank 32 is low, adding purified water to heating tank 32 will cause purified water overflow or prevent the hot water from being heated to boiling water after passing through instant heating component 36, affecting the normal operation of the cooled boiled water production equipment. At this time, the valve inlet of the first reversing valve is connected to the first outlet, allowing purified water in the main flow channel 211 to flow to concentrated water channel 104 through the first branch 212 to discharge purified water.

[0132] Optionally, the first directional valve can be a solenoid valve with one inlet and two outlets to achieve automatic switching of valve circuits.

[0133] In this embodiment, by cooperating with the first branch 212 and the first reversing valve, the water remaining in the first flow channel 21 can be discharged when the boiled water preparation equipment is not working, so as to avoid the long-term retention of some water in the first flow channel 21 and the growth of bacteria, thus ensuring drinking hygiene.

[0134] To facilitate the discharge of at least a portion of the purified water through the concentrate channel 104 via the first valve assembly 24, a liquid level detection component is installed inside the heating tank 32. This component detects the liquid level within the heating tank 32 and is communicatively connected to the first valve assembly 24. When the liquid level detection component detects that the liquid level in the heating tank 32 is lower than the first maximum liquid level, the first reversing valve connects the main flow channel 211 to the second branch 213, allowing purified water to enter the heating tank 32. When the liquid level detection component detects that the liquid level in the heating tank 32 is equal to the first maximum liquid level, the first reversing valve connects the main flow channel 211 to the first branch 212, allowing the purified water in the main flow channel 211 to be discharged through the concentrate channel 104.

[0135] Optionally, the liquid level detection component can be a float level gauge or other types of liquid level detection structures in the prior art, as long as it can detect the liquid level in the heating tank 32, and there is no limitation here.

[0136] Optionally, both the liquid level detection component and the first valve component 24 are electrically connected to the controller. The liquid level detection component sends the detected liquid level information to the controller, and the controller controls the valve path switching of the first valve component 24 according to the received liquid level information.

[0137] It should be noted that the liquid level detection component and the controller are both existing technologies in the field, and the connection circuit between the liquid level detection component, the controller and the first valve component 24 is also existing technology in the field, and will not be described in this embodiment.

[0138] In some other embodiments, the first valve assembly 24 can be a diversion valve that can simultaneously connect the first branch 212 and the second branch 213, so that the purified water in the main channel 211 can be divided into two paths. One path of purified water enters the first branch 212 and is discharged through the concentrated water channel 104, while the other path of purified water can enter the second branch 213 and enter the heating tank 32.

[0139] Optionally, the flow divider valve can be a three-way flow divider valve, a proportional flow divider valve, or an adjustable flow divider valve, which can be set according to actual needs.

[0140] In some other embodiments, the first valve assembly 24 may include two switching valves, with a switching valve provided on both the first branch 212 and the second branch 213. The two switching valves can be independently controlled to open and close, and the on / off state of the first branch 212 and the second branch 213 can be controlled by the switching valves.

[0141] Optionally, all of the above-mentioned switching valves can be electromagnetic switching valves to achieve automatic switching of the flow channel.

[0142] Example 3

[0143] This embodiment provides a device for producing cooled boiled water, which differs from Embodiment 1 or Embodiment 2 in the driving method when the water in the heating tank 32 flows to the instant heating component 36.

[0144] To simplify the structure and reduce costs, such as Figure 3 As shown, the drive pump 33 can be omitted, and instead, an exhaust switch valve 322 is provided on the first exhaust flow path 321. When hot water needs to be supplied to the instant heating component 36, the booster pump 14 provides power to the water in the water path, and the exhaust switch valve 322 is closed. The steam in the heating tank 32 cannot be discharged, which will squeeze the hot water in the heating tank 32, causing the water in the heating tank 32 to flow to the instant heating component 36.

[0145] To facilitate the flow of hot water from the heating tank 32 to the instant heating component 36, a first connecting port is provided at the bottom of the heating tank 32, and a second connecting port is provided in the instant heating component 36 that communicates with the first connecting port. By placing the first connecting port at the bottom of the heating tank, it is convenient for the hot water in the heating tank 32 to flow to the instant heating component 36 under the action of gravity and steam compression.

[0146] Optionally, the exhaust switch valve 322 can be a solenoid valve to facilitate the opening and closing of the exhaust switch valve 322.

[0147] Example 4

[0148] This embodiment provides a device for preparing cooled boiled water, which is a further improvement on any of the above embodiments to improve drinking hygiene.

[0149] like Figure 4 As shown, the boiled water production equipment also includes a sterilization channel 80. The first end of the sterilization channel 80 can be connected to the outlet channel 50, and the end of the sterilization channel 80 can be connected to the heating mechanism 30. When sterilizing the boiled water production equipment, the filtration mechanism 10 does not work, that is, the filtration mechanism 10 does not introduce purified water into the first channel 21; the heating tank 32 is started, heating the water inside to boiling water or ensuring that the hot water inside becomes boiling water after being heated by the instant heating component 36. Afterwards, driven by the drive pump 33, the boiling water flows back to the heating mechanism 30 through the upstream channel, the second channel 22, the temperature regulating valve 51, the downstream channel, and the sterilization channel 80 in sequence, so as to sterilize and disinfect the flow path through which it flows, ensuring the hygiene of drinking water.

[0150] In this embodiment, the end of the sterilization channel 80 is connected to the heating tank 32. Boiling water in the heating tank 32 sterilizes and disinfects the channel it flows through before returning to the heating tank 32 for reheating. This cycle continues, ensuring hygiene within the drinking water equipment and improving drinking safety. Using boiling water for sterilization eliminates the need for an additional sterilization module, simplifying the structure and reducing costs.

[0151] In some other embodiments, the end of the sterilization channel 80 can be connected to the beginning of the first channel 21, further increasing the sterilization range. During sterilization, the drive pump 33 starts, causing the hot water in the heating tank 32 to flow sequentially through the instant heating component 36 and then through the heating outlet to the upstream channel, the second channel 22, the temperature control valve 51, the downstream channel, the sterilization channel 80, the first channel 21, and the heating tank 32. Then, driven by the drive pump 33, it flows back towards the instant heating component 36, thus achieving hot water sterilization. This long hot water flow path effectively sterilizes the heat exchanger 20, the heating tank 32, and the instant heating component 36, improving drinking water hygiene.

[0152] In addition, the boiling water in the sterilization channel 80 can also push the clean water of the room temperature water remaining in the first channel 21 into the heating tank 32 for heating, thus preventing the growth of bacteria from the room temperature water that has been present in the first channel 21 for a long time.

[0153] In some other embodiments, the end of the sterilization channel 80 may also be connected to the beginning of the first channel 21, and the specific connection position may be adjusted according to the actual sterilization and disinfection range required.

[0154] To drain the water used in the sterilization process and prevent users from drinking it, the heating tank 32 may optionally be equipped with a drain outlet, which can be connected to the outside of the boiled water preparation equipment through a pipe to drain the water used for sterilization.

[0155] To facilitate control of the opening and closing of the drain outlet, a drain valve is connected to the drain outlet. When the drain valve is open, the heating tank 32 drains water outward, and when the drain valve is closed, the heating tank 32 stores water.

[0156] To enable start / stop control of the sterilization function, the boiled water production equipment also includes a second valve assembly 81. The second valve assembly 81 can connect the water outlet channel 50 to the water outlet mechanism 70 or to the sterilization channel 80. When sterilization is required, the second valve assembly 81 switches to the state where the water outlet channel 50 is connected to the sterilization channel 80, and the boiled water supplied from the heating outlet will be sterilized and returned through the sterilization channel 80. The water outlet channel 50 is not connected to the water outlet mechanism 70. When normal water production is required, the second valve assembly 81 switches to the state where the water outlet channel 50 is connected to the water outlet mechanism 70, and the water outlet channel 50 is not connected to the sterilization channel 80.

[0157] In this embodiment, the second valve assembly 81 includes a second reversing valve, which is a solenoid valve with one inlet and two outlets. The inlet end and one outlet end of the second reversing valve are connected in series in the water outlet channel 50, and the other outlet end is connected to the sterilization channel 80 to realize the above-mentioned switching function.

[0158] In some embodiments, the second valve assembly 81 can be replaced by two switching valves. Exemplarily, the first end of the sterilization channel 80 is connected to the outlet channel 50, and a switching valve is provided on the sterilization channel 80 to control the opening and closing of the sterilization channel 80; another switching valve is provided on the outlet channel 50 downstream of the first end of the sterilization channel 80, and this switching valve is used to control the opening and closing between the outlet channel 50 and the outlet mechanism 70.

[0159] In some embodiments, the temperature control valve 51 and the second valve assembly 81 can be replaced by a four-way valve, which can also achieve the above functions.

[0160] Example 5

[0161] This embodiment provides a device for producing cooled boiled water, which differs from Embodiment 1 in that the heating tank 32 and the instant heating component 36 are in different order.

[0162] like Figure 5 As shown, in this embodiment, the instant heating component 36 is located upstream of the heating tank 32, the heating inlet is located on the instant heating component 36, and the heating outlet is located on the heating tank 32. The purified water in the first flow channel 21 is first heated by the instant heating component 36 and then enters the heating tank 32. The hot water is stored in the heating tank 32 and further heated into boiling water. By controlling the start and stop of the heating element in the heating tank 32, the water in the heating tank 32 can always be kept at a boiling state or close to a boiling state, so that users can take it at any time.

[0163] After a certain amount of boiled water is stored in the heating tank 32, the filtration mechanism 10 and the instant heating component 36 can stop working. When it is necessary to prepare cooled boiled water, the heating tank 32 directly supplies boiled water into the second flow channel 22. The filtration mechanism 10 starts and prepares purified water. After heat exchange in the first flow channel 21, the purified water is heated into boiled water by the instant heating component 36, and boiled water is continuously replenished into the heating tank 32. In this structure, because the heating tank 32 has a certain amount of boiled water reserve, it can meet the large-flow preparation of cooled boiled water, thereby meeting the user's needs. When it is necessary to replenish water into the heating tank 32, the instant heating component 36 replenishes the heated boiled water into the heating tank 32, ensuring that the water supplied by the heating tank 32 is always boiled water, thus preparing truly cooled boiled water.

[0164] In addition, the temperature of the purified water increases after heat exchange in the first flow channel 21, which can achieve the effect of preheating the purified water. This not only improves the heat utilization rate, but also helps to ensure the boiling effect of the instant heating component 36 on this part of the water.

[0165] Optionally, the first flow channel 21 can be as follows: Figure 5 As shown, it is directly connected to the heating inlet of the instant heating component 36, or it can be like... Figure 6 As shown, the end is divided into a first branch 212 and a second branch 213. On the one hand, this prevents the water in the heating tank 32 from overflowing, and on the other hand, it reduces the amount of water passing through the instant heating component 36, ensuring that the instant heating component 36 can boil the water and reduce the power requirement of the instant heating component 36.

[0166] In some embodiments, to improve drinking hygiene, such as Figure 7 As shown, the boiled water preparation equipment also includes a sterilization channel 80 and a second valve assembly 81. The first end of the sterilization channel 80 is connected to the outlet channel 50, and the last end of the sterilization channel 80 is connected to the heating tank 32 or the first channel 21 to achieve sterilization and disinfection. The second valve assembly 81 is used to switch the flow path. The specific connection position of the sterilization channel 80, the specific structure of the second valve assembly 81, and the specific flow path of the boiling water during the sterilization process can be referred to in Embodiment Six, and will not be repeated here.

[0167] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A device for preparing cooled boiled water, characterized in that, include: A filtration mechanism (10) is provided with a filtration outlet; The heat exchanger (20) includes a first flow channel (21) and a second flow channel (22) for heat exchange, wherein the first end of the first flow channel (21) is connected to the filter outlet. The thermal energy mechanism (30) is provided with a heating inlet and a heating outlet. The heating inlet can be connected to the end of the first flow channel (21), and the heating outlet can be connected to the beginning of the second flow channel (22). The thermal energy mechanism (30) includes a heating tank (32) and an instant heating component (36) arranged in series. The heating tank (32) has heating and water storage functions. The water outlet mechanism (70) is connected to the end of the second flow channel (22).

2. The boiled water preparation equipment according to claim 1, characterized in that, The instant heating component (36) is located upstream of the heating tank (32), the heating inlet is located in the instant heating component (36), and the heating outlet is located in the heating tank (32). Alternatively, the heating tank (32) may be located upstream of the instant heating component (36), the heating inlet may be located in the heating tank (32), and the heating outlet may be located in the instant heating component (36).

3. The boiled water preparation equipment according to claim 2, characterized in that, The heating tank (32) is connected to an exhaust flow path (321), and a drive pump (33) is provided at the outlet end of the heating tank (32), or an exhaust switch valve (322) is provided on the exhaust flow path (321).

4. The boiled water preparation equipment according to claim 3, characterized in that, A first temperature detection element is provided inside the heating tank (32) or at the outlet end of the heating tank (32), and the first temperature detection element is communicatively connected to the drive pump (33) or the exhaust switch valve (322).

5. The apparatus for preparing cooled boiled water according to any one of claims 1-4, characterized in that, The cooled boiled water preparation equipment also includes: The water outlet channel (50) is connected to the heating outlet. The first end and the last end of the second channel (22) are both connected to the water outlet channel (50). The connection position between the first end of the second channel (22) and the water outlet channel (50) is located upstream of the connection position between the last end of the second channel (22) and the water outlet channel (50). A temperature control valve assembly is disposed on the outlet channel (50) or the second channel (22), and the temperature control valve assembly is used to adjust the flow rate in the second channel (22).

6. The boiled water preparation equipment according to claim 5, characterized in that, The cooled boiled water preparation equipment also includes: The sterilization channel (80) has one end connected to the water outlet channel (50) and the other end connected to the thermal energy mechanism (30) or the first channel (21).

7. The apparatus for preparing cooled boiled water according to any one of claims 1-4, characterized in that, The filtration mechanism (10) includes a booster pump (14) connected in series and at least one filter element, the power of which is adjustable; And / or, at least one of the filter elements is provided with a concentrate outlet, the concentrate outlet being connected to a concentrate valve (15), the opening degree of the concentrate valve (15) being adjustable.

8. The boiled water preparation equipment according to claim 7, characterized in that, The filtration mechanism (10) further includes a concentrate channel (104), which is connected to the concentrate outlet, and the concentrate valve (15) is disposed in the concentrate channel (104). The first flow channel (21) includes a main flow channel (211) and two branch flow channels. The main flow channel (211) is heat exchanged with the second flow channel (22). The end of the main flow channel (211) can selectively connect to at least one of the branch flow channels. One of the two branch flow channels is connected to the concentrate flow channel (104), and the other is connected to the heating inlet.

9. The apparatus for preparing cooled boiled water according to any one of claims 1-4, characterized in that, The filtration mechanism (10) includes: Filter element; The return flow path (103) is connected at one end to the purified water outlet of the filter element and at the other end to the upstream of the filter element. A reflux valve (17) is provided in the reflux flow path (103), and the opening degree of the reflux valve (17) is adjustable or the opening and closing are controllable.

10. The apparatus for preparing cooled boiled water according to any one of claims 1-4, characterized in that, The first flow channel (21) is provided with a first switching valve (23) or a first flow regulating valve at its head end.

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