Table type water purifier

Abstract

The table type water purifier is provided with a main water outlet and further comprises a water storage tank, a filtering assembly, a water purification tank and a cold container, the filtering assembly is provided with a raw water opening and a water purification opening, the raw water opening is connected to the water storage tank through a raw water pipeline, a booster pump is arranged on the raw water pipeline in series, and a water inlet of the water purification tank is connected to the water purification opening; the cold container comprises a cold water cavity, a refrigeration assembly and a first water cooling assembly, a water inlet of the cold water cavity is connected to a water outlet of the water purifying tank through a water supplementing pipeline, a water outlet of the cold water cavity is connected to the main water outlet, the cold end of the refrigeration assembly can exchange heat with the cold water cavity, and the hot end of the refrigeration assembly can exchange heat with the first water cooling assembly; the first water cooling assembly is arranged on the raw water pipeline in series. The refrigeration process and the water production process of the table type water purifier are carried out at the same time, no extra pumping device needs to be arranged, and no extra noise is generated.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, specifically to a tabletop water purifier. Background Technology

[0002] With the development of the times, people have increasingly higher requirements for drinking water quality, and water purifiers have been widely recognized and purchased. Water purifiers can purify tap water or water in a water tank to provide users with high-quality clean water. Water purifiers on the market include built-in water purifiers, under-sink water purifiers, and countertop water purifiers. Countertop water purifiers have become a popular choice due to their ease of use.

[0003] Countertop water purifiers typically have a water tank to store raw water. Therefore, they can be used in locations without a tap water source, such as restaurants or bedrooms. Water purifiers that provide cold water have an internal cooling system. This cooling system needs to dissipate heat during the cooling process, so existing cold water purifiers usually have a fan to provide sufficient airflow for cooling.

[0004] Because air has a very low specific heat capacity, the air temperature around the cooling components rises rapidly under the same cooling power. A large volume of air needs to be pumped around the cooling components by a fan to ensure they maintain good heat dissipation. However, fans capable of pumping large volumes of air are noisy, resulting in a poor user experience. Utility Model Content

[0005] To at least partially address the problems existing in the prior art, some embodiments of this utility model provide a tabletop water purifier with a main water outlet, including: a water storage tank; a filter assembly having a raw water outlet and a purified water outlet, the raw water outlet being connected to the water storage tank via a raw water pipeline, and a booster pump being connected in series on the raw water pipeline; a purified water tank with its inlet connected to the purified water outlet; and a cold tank including a cold water chamber, a refrigeration component, and a first water-cooling component, the inlet of the cold water chamber being connected to the outlet of the purified water tank via a water supply pipeline, and the outlet of the cold water chamber being connected to the main water outlet, wherein: the cold end of the refrigeration component can exchange heat with the cold water chamber, and the hot end of the refrigeration component can exchange heat with the first water-cooling component; and the first water-cooling component is connected in series on the raw water pipeline.

[0006] In the above technical solution, during the water production process of the countertop water purifier, the raw water pumped by the booster pump passes through the first water-cooling component to cool the refrigeration component. Since the booster pump will inevitably work and generate noise during the water production process, the cooling process and the water production process of the countertop water purifier are carried out simultaneously, eliminating the need for additional pumping devices and preventing additional noise generation.

[0007] For example, the first water-cooling component is connected in series upstream of the booster pump. This eliminates the need for the first water-cooling component and the connecting piping to it to be pressure-resistant, reducing costs and eliminating the risk of leakage. Furthermore, since the booster pump performs work on the raw water as it passes through, increasing both the raw water pressure and temperature, placing the first water-cooling component upstream of the booster pump results in a lower cooling water temperature and better cooling performance.

[0008] For example, the countertop water purifier further includes: a first circulation pipe, the inlet of which is connected to the outlet of a first water-cooling component, and the outlet of which is connected to a water storage tank; and a circulation pump, which is connected in series on the first circulation pipe. When the water purifier stops producing water, the circulation pump can pump raw water as cooling water to lower the temperature. This allows for a large supply of cold water to the user, improving the user experience.

[0009] For example, the countertop water purifier further includes: a second water-cooling component, the hot end of which can exchange heat with the cooling component; a second circulation pipe, the inlet of which is connected to a water storage tank, and the outlet of which is connected to the inlet of the second water-cooling component; a third circulation pipe, the inlet of which is connected to the outlet of the second water-cooling component, and the outlet of which is connected to the water storage tank; and a circulation pump, at least one of the second and third circulation pipes being connected in series with a circulation pump. Thus, the concentrated water generated during water purification or the raw water used for rinsing (mentioned below) can be cooled by the first water-cooling component, and the raw water pumped by the circulation pump can be cooled by the second water-cooling component, with their flow rates not interfering with each other, resulting in better cooling performance.

[0010] For example, the countertop water purifier also includes: a water level detector for detecting the water level in the purified water tank; a temperature sensor for detecting the water temperature in the cold water chamber; and a controller electrically connected to the water level detector, the temperature sensor, the booster pump, the circulation pump, and the cooling assembly. The controller is used to: control the booster pump and the cooling assembly to operate when the water level in the purified water tank is lower than or equal to the lower limit; and control the circulation pump and the cooling assembly to operate when the water level in the purified water tank is higher than or equal to the upper limit and the water temperature in the cold water chamber is higher than a preset temperature. With the above configuration, the water purifier can provide a large amount of cold water while maintaining relatively low overall noise.

[0011] For example, the countertop water purifier also includes: a water level detector for detecting the water level in the water tank; and a controller electrically connected to the water level detector, a booster pump, and a cooling component. The controller is used to: control the booster pump and the cooling component to operate when the water level in the water tank is lower than or equal to the lower limit of the water level. Thus, the water level detector can control the booster pump to refill the water tank after the user has taken water. During this period, the cooling component can be controlled to operate simultaneously, using the raw water from the refilling process to pass through a first water-cooling component to dissipate heat from the cooling component.

[0012] For example, the filter assembly also includes a concentrate inlet connected to a water storage tank via a concentrate pipeline, on which a wastewater ratio solenoid valve is connected in series. The countertop water purifier also includes a temperature sensor for detecting the water temperature in the cold water chamber. The controller is further configured to control the wastewater ratio solenoid valve and the cooling assembly to open when the water level in the purified water tank is higher than or equal to the upper limit and the water temperature in the cold water chamber is higher than a preset temperature. In summary, the water purifier can also flush the filter assembly via the wastewater ratio solenoid valve and perform water cooling on the cooling assembly during the flushing process. The first water-cooling assembly can also be flushed during the flushing process to prevent scale buildup on the first water-cooling assembly.

[0013] For example, a cold water pump is installed on the water supply line. The cold water pump can be located downstream of the purified water tank. The cold water pump can pump cold water to a height above the cold water chamber or above the liquid level in the purified water tank, effectively increasing the water flow rate and improving the user experience. Furthermore, the cold tank is only connected to the outside world through the cold water pipeline. When the user needs cold water, the cold water pump can draw room-temperature purified water from the purified water tank to replenish the cold tank, forcing the cold water inside the cold tank to the main outlet. Therefore, the cold tank does not have a vent for balancing air pressure, resulting in a simpler structure. By not connecting to the atmosphere through a vent, foreign objects, dust, and bacteria can be prevented from entering the cold tank, making it less prone to bacterial growth and allowing for simple maintenance such as evacuation.

[0014] For example, the outlet of the water tank is also connected to the main outlet via an outlet pipe, and an outlet water pump is installed on the outlet pipe. Similar to a cold water pump, the outlet water pump can also make the height of the main outlet unrestricted and provide a large flow of room temperature water.

[0015] For example, a heating element is connected in series on the outlet water pipe. Thus, purified water at room temperature in the water tank can be heated by the heating element and provided to the user. Optionally, the outlet water pump can control the flow rate, thereby enabling the water purifier to provide the user with hot water at a more accurate temperature.

[0016] This utility model description introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0017] The advantages and features of this utility model will be described in detail below with reference to the accompanying drawings. Attached Figure Description

[0018] The following drawings, which are incorporated herein by reference as part of this invention, are provided for understanding the invention. The drawings illustrate embodiments of the invention and their descriptions, serving to explain the principles of the invention. In the drawings,

[0019] Figure 1 Here is a water circuit diagram of a countertop water purifier according to an exemplary embodiment of the present invention;

[0020] Figure 2 Here is a water circuit diagram for a countertop water purifier according to yet another exemplary embodiment of the present invention;

[0021] Figure 3 The water circuit diagram of a countertop water purifier according to another exemplary embodiment of the present invention is shown.

[0022] The above figures include the following reference numerals:

[0023] 10. Main water outlet; 100. Filter assembly; 101. Raw water outlet; 102. Clean water outlet; 103. Concentrate outlet; 200. Water storage tank; 300. Raw water pipeline; 310. Booster pump; 400. Cold tank; 410. First water-cooling assembly; 420. First water-cooling pipeline; 430. First circulation pipeline; 440. Circulation pump; 460. Second circulation pipeline; 470. Third circulation pipeline; 500. Concentrate pipeline; 520. Wastewater ratio solenoid valve; 600. Second water-cooling assembly; 700. Makeup water pipeline; 710. Clean water tank; 720. Cold water pump; 800. Outlet pipeline; 810. Outlet pump; 820. Heating element. Detailed Implementation

[0024] In the following description, numerous details are provided to enable a thorough understanding of the present invention. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the present invention, which may be practiced without one or more of these details. Furthermore, to avoid confusion with the present invention, some technical features well-known in the art have not been described in detail.

[0025] To fully understand the embodiments of this utility model, a detailed structure will be presented in the following description. Obviously, the implementation of the embodiments of this utility model is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this utility model are described in detail below; however, in addition to these detailed descriptions, this utility model may have other embodiments.

[0026] This utility model provides a countertop water purifier. The countertop water purifier according to an embodiment of this utility model will be described in detail below with reference to the accompanying drawings.

[0027] like Figure 1 As shown, the countertop water purifier has a main water outlet 10, which can provide at least filtered room temperature water and chilled water. As mentioned above, the countertop water purifier includes a water storage tank 200, which can store raw water. Raw water includes, but is not limited to, tap water and bottled water. Optionally, the user can remove the water storage tank 200 from the main body of the countertop water purifier, add raw water, and then reinstall it on the main body. The countertop water purifier may also include a filter assembly 100, which has a raw water outlet 101 and a purified water outlet 102. The raw water outlet 101 can be connected to the water storage tank 200 via a raw water pipeline 300, and a booster pump 310 is connected in series on the raw water pipeline 300. The booster pump 310 can provide pressure to the raw water in the water storage tank 200, enabling it to pass through the filter assembly 100 to produce purified water. The filter assembly 100 may include a reverse osmosis filter, an ultrafiltration filter, a nanofiltration filter, or a filter composed of any two or more of these. Compared to other types of filter cartridges, reverse osmosis and nanofiltration filters provide better filtration effects, and the booster pump 310 used needs to be able to provide greater raw water pressure. These two types of filter cartridges also produce a certain proportion of concentrate during operation, and the countertop water purifier may also be equipped with a concentrate outlet 103. Optionally, the filter assembly 100 may include a pre-filter and a central filter. The pre-filter may include one of activated carbon, polypropylene fiber (PP) cotton, porous ceramic filter, etc., or a filter composed of any two or more of these. The central filter includes the aforementioned ultrafiltration, nanofiltration, or a filter composed of any two or more of these. The pre-filter may be installed before the central filter to perform preliminary filtration of the water entering the central filter, thereby extending the service life of the central filter.

[0028] The countertop water purifier may also include a water tank 710, with its inlet connected to a water outlet 102. The water tank 710 can store a large quantity of purified water produced by the filter assembly 100. When the user needs cold water, the water tank 710 can replenish the cold water chamber with room temperature purified water. This avoids the need to start the booster pump 310 to produce water every time the user needs cold water, reducing the number of start-stop cycles of the booster pump 310, extending the lifespan of the filter assembly 100, and reducing the noise of the water purifier. In some embodiments, the filter assembly 100 has a low-flow-rate filter element (daily water production less than 400 gallons). In this case, the water tank 710 can also temporarily store the purified water when the user is not using water, thus allowing a large flow of room temperature water to be provided to the user.

[0029] The countertop water purifier may also include a cold tank 400, which may include a cold water chamber (not shown) disposed therein. Optionally, the cold water chamber may have a shape substantially the same as the main body of the cold tank 400, being cubic in shape. Optionally, the cold tank 400 may have tortuous pipes formed inside, with the cold water chamber having an inner cavity formed by the pipes, thereby increasing the inner surface area of ​​the cold water chamber. The cold tank 400 may also include a refrigeration component, which may include a compressor-type refrigeration component, a semiconductor refrigeration component, or other existing or future refrigeration components. Regardless of the type of refrigeration component, heat is generated during the refrigeration process, causing one part of the refrigeration component to form a hot end and the other part to form a cold end. The cold end of the refrigeration component can exchange heat with the cold water chamber, thereby cooling the water in the cold water chamber. The inlet of the cold water chamber is connected to the outlet of the purified water tank 710 through a water supply pipe 700, and the outlet of the cold water chamber is connected to the main outlet 10. In some embodiments, a cold water pump 720 can be installed between the cold tank 400 and the purified water tank 710 to replenish water from the purified water tank 710 when the cold tank 400 is short of water. In other embodiments, the cold tank 400 can be replenished with water to be cooled from the purified water tank 710 by gravity. In summary, the water purifier can provide users with cold water below room temperature. Optionally, the main water outlet 10 can be connected to a faucet or water spout. Optionally, the main water outlet 10 can have multiple separate openings, so that water that has undergone different treatments, such as cooled water or heated water, is provided to the user through different openings without interference.

[0030] For any existing type of refrigeration component, the refrigeration efficiency decreases when the temperature difference between its hot and cold ends is too large. Taking semiconductor refrigeration as an example, when the temperature difference between its hot and cold ends reaches more than 50 degrees Celsius, its refrigeration effect decreases significantly, causing the water temperature in the cooling tank 400 to hardly decrease any further, making it difficult for the water purifier to provide the required temperature of cold water. Therefore, the hot end of the refrigeration component needs to be cooled. The hot end of the refrigeration component can exchange heat with the first water-cooling component 410, which can transfer the heat from the hot end to the cooling water. Since water has a much higher specific heat capacity than air, the temperature rise of the same volume of water is much less than that of the same volume of air during the process of water passing through the first water-cooling component 410. In some embodiments, the refrigeration component includes a compressor and a refrigerant circulation pipeline. In this case, the first water-cooling component 410 can be constructed as nested pipelines, with one of the refrigerant and cooling water flowing in the inner tube of the first water-cooling component 410, and the other flowing between the outer wall of the inner tube and the outer tube. Optionally, the first water-cooling assembly 410 may include a heat sink and water pipes made of thermally conductive material embedded in the heat sink. Optionally, the first water-cooling assembly 410 may include a water cooling head. For a semiconductor cooler, since it does not have a piping structure, the first water-cooling assembly 410 may be a planar assembly such as the water cooling head described above.

[0031] The first water-cooling component 410 can be connected in series with the raw water pipeline 300. When the filter component 100 produces water, the water in the raw water pipeline 300 can dissipate heat from the first water-cooling component 410. In embodiments of the filter component 100 that do not produce concentrated water, the temperature of the purified water produced is close to the temperature of the raw water after passing through the first water-cooling component 410. The purified water with the increased temperature is temporarily stored in the purified water tank 710 and slowly dissipates heat when water production stops. When the user takes hot water or room temperature water, the purified water tank 710 can be replenished with new purified water, which may not pass through the first water-cooling component 410 and remains at room temperature. In short, because the capacity of the purified water tank 710 is relatively large, the heat transferred to the purified water when the cooling tank 400 is cooling will not cause the water temperature in the purified water tank 710 to rise significantly. Therefore, it is almost impossible for the cooling tank 400 to replenish water at a very high temperature from the purified water tank 710. In the embodiment of the filter assembly 100 that generates concentrated water, the rise in water temperature in the purified water tank 710 is further slowed down because some of the heat from the raw water returns to the storage tank 200 via the concentrated water. Experiments show that, within the calibrated time, cooling water to the preset temperature with a cooling power of 60W and a 10-degree temperature difference between the cold water and the air requires an airflow rate of 279 L / min. However, with the same cooling power of 60W and a 5-degree temperature difference between the cold water and the cooling water, only a 170 mL / min water flow rate is required.

[0032] In the above technical solution, during the water production process of the countertop water purifier, the raw water pumped by the booster pump 310 passes through the first water-cooling component 410 to cool the refrigeration component. Since the booster pump 310 will inevitably work and generate noise during the water production process, the cooling process and the water production process of the countertop water purifier are carried out simultaneously, eliminating the need for additional pumping devices and preventing additional noise generation.

[0033] For example, the first water-cooling component 410 can be connected in series upstream of the booster pump 310. This eliminates the need for the first water-cooling component 410 and the connecting pipes to it to be pressure-bearing, resulting in lower costs and no increased risk of leakage. Furthermore, since the booster pump 310 performs work on the raw water as it passes through, increasing both the raw water pressure and temperature, placing the first water-cooling component 410 upstream of the booster pump 310 results in a lower cooling water temperature and better cooling performance.

[0034] For example, a cold water pump 720 can also be installed on the water supply pipe 700. The cold water pump 720 can be located downstream of the purified water tank 710. The cold water pump 720 can pump cold water to a height higher than the cold water chamber or the liquid level in the purified water tank 710, which can effectively increase the water flow rate and improve the user experience. Furthermore, the cold tank 400 is only connected to the outside world through the cold water pipe. When the user takes cold water, the cold water pump 720 can draw room temperature purified water from the purified water tank 710 to replenish the cold tank 400, and squeeze the cold water in the cold tank 400 to the main outlet 10. Therefore, the cold tank 400 does not have a vent for balancing air pressure, and its structure is relatively simple. By not connecting to the atmosphere through a vent, foreign objects, dust, and bacteria can be prevented from entering the cold tank 400, making it difficult for bacteria to grow inside the cold tank 400, and simple maintenance can be performed by simply purging.

[0035] For example, the water tank 710 is also connected to the main water outlet 10 via a water outlet pipe 800, on which a water pump 810 is installed. The water outlet pipe 800 can supply the user with purified water at room temperature from the water tank 710. Similar to the cold water pump 720, the water pump 810 also allows the height of the main water outlet 10 to be unrestricted and provides a larger flow rate of room temperature water.

[0036] For example, a heating element 820 is connected in series on the water outlet pipe 800. The heating element 820 may include, but is not limited to, existing or future heating elements such as a thick-film heating element 820, a hot water tank, or an electromagnetic heater. Thus, room-temperature purified water in the water tank 710 can be heated by the heating element 820 and provided to the user. Optionally, the water outlet pump 810 can control the flow rate, thereby enabling the water purifier to provide the user with hot water at a relatively accurate temperature.

[0037] For example, the countertop water purifier may also include a water level detector and a controller for detecting the water level in the water tank 710. The controller can be electrically connected to the water level detector, the booster pump 310, and the cooling unit. The water level detector includes, but is not limited to, commercially available sensors such as infrared water level sensors, ultrasonic water level sensors, float sensors, and future water level sensors. Accordingly, these water level sensors can be located inside or outside the water tank 710. The controller is used to control the booster pump 310 and the cooling unit to operate when the water level in the water tank 710 is lower than or equal to the lower limit. During the water purification process, the water level in the water tank 710 gradually rises. If the cooling unit operates and continuously controls the booster pump 310 to operate, the water tank 710 may overflow if the water tank 710 does not have an overflow outlet. Therefore, the water level detector can be used to control the booster pump 310 to refill the water tank 710 after the user has used water. During this period, the cooling components can be controlled to operate simultaneously, utilizing the raw water from the water replenishment period to dissipate heat from the cooling components via the first water-cooling component 410. Specifically, the controller can be constructed using electronic components such as timers, comparators, registers, and digital logic circuits, or implemented using processor chips such as microcontrollers, microprocessors, programmable logic controllers (PLCs), digital signal processors (DSPs), field-programmable gate arrays (FPGAs), programmable logic arrays (PLAs), and application-specific integrated circuits (ASICs) and their peripheral circuits.

[0038] like Figure 2 As shown, exemplarily, the countertop water purifier may further include a first circulation pipe 430 and a circulation pump 440. The inlet of the first circulation pipe 430 is connected to the outlet of the first water-cooling component 410, and the outlet of the first circulation pipe 430 is connected to the water storage tank 200. The circulation pump 440 may be connected in series with the first circulation pipe 430. As mentioned above, the water purifier can only cool during the water production process, which results in a relatively short cooling time. This may be insufficient to meet the user's needs when the user frequently uses cold water. In order to continue to dissipate heat from the cooling component through water cooling after the water purifier stops producing water, the circulation pump 440 can be used to allow the raw water in the water storage tank 200 to absorb heat through the first water-cooling component 410 and return to the water storage tank 200. Optionally, during the water purifier's water production, the raw water supplied to the booster pump 310 can be used as cooling water for heat dissipation. Optionally, during water purification, a portion of the raw water can be supplied to the booster pump 310 as cooling water. This raw water is cooled by the first water-cooling component 410, and simultaneously, a portion of the raw water is pumped back to the storage tank 200 by the circulation pump 440 to increase the flow rate of the cooling water. When the water purifier stops producing water, the circulation pump 440 can pump the raw water as cooling water to further cool it. This allows for a larger supply of cold water to users, improving the user experience.

[0039] like Figure 3 As shown, exemplarily, the countertop water purifier may further include a second water-cooling component 600, the hot ends of which are capable of heat exchange with the cooling component. The countertop water purifier may also include a second circulation pipe 460 and a third circulation pipe 470. The inlet of the second circulation pipe 460 is connected to the water storage tank 200, and the outlet of the second circulation pipe 460 is connected to the inlet of the second water-cooling component 600. The inlet of the third circulation pipe 470 is connected to the outlet of the second water-cooling component 600, and the outlet of the third circulation pipe 470 is connected to the water storage tank 200. A circulation pump 440 is connected in series with at least one of the second circulation pipe 460 and the third circulation pipe 470. Thus, the circulation pump 440 can pump raw water between the water storage tank 200 and the second water-cooling component 600.

[0040] In some embodiments employing semiconductor refrigeration, two or more semiconductor coolers may be installed on each cooling chamber 400. For example... Figure 3 As shown, each thermoelectric cooler can be matched with a water cooling head, where one or more water cooling heads can serve as the first water cooling assembly 410, and other water cooling heads can serve as the second water cooling assembly 600. The first water cooling assembly 410 and the second water cooling assembly 600 are connected to the water storage tank 200 through different water passages, thereby avoiding the situation where multiple water cooling heads are connected in series, resulting in excessively high water temperature at the end of the water cooling head, or multiple water cooling heads are connected in parallel, resulting in insufficient water flow for each water cooling head. Optionally, the first water cooling assembly 410 and the second water cooling assembly 600 can be integrated, with only the water passages separating them from each other. Specifically, the first water cooling assembly 410 and the second water cooling assembly 600 can include a heat sink and cooling pipes disposed on the heat sink. The first water cooling assembly 410 and the second water cooling assembly 600 can share the same heat sink, and at least one of the two cooling pipes is connected to the second circulation pipe 460 and the third circulation pipe 470, and the other of the at least two cooling pipes is connected between the concentrate pipe 500 and the first water cooling pipe 420. Therefore, the concentrated water generated during water production or the raw water used for rinsing (mentioned below) can be cooled by the first water cooling component 410, and the raw water pumped by the circulation pump 440 can be cooled by the second water cooling component 600. The flow rates of each component do not interfere with each other, resulting in a better water cooling effect.

[0041] For example, the countertop water purifier may also include a temperature sensor for detecting the water temperature in the cold water chamber. The controller may also be electrically connected to the temperature sensor. The temperature sensor may include a resistance temperature detector (RTD), a thermocouple, or an infrared temperature sensor. The controller may be used to: control the booster pump 310 and the cooling component to operate when the water level in the purified water tank 710 is below or equal to the lower limit; and control the circulation pump 440 and the cooling component to operate when the water level in the purified water tank 710 is above or equal to the upper limit and the water temperature in the cold water chamber is above a preset temperature. The controller can determine whether the water in the cold water chamber meets the desired temperature using the temperature sensor, and thus control the cooling component to cool when the water temperature is high. As described above, when the water level in the purified water tank 710 has not reached the upper limit, the cooling component can be controlled to operate when the booster pump 310 is operating, using the raw water flowing to the booster pump 310 as cooling water. When the water level in the purified water tank 710 is higher than or equal to the upper limit, continuing to control the booster pump 310 to produce water will cause purified water to overflow. If the water temperature in the cold water chamber is still insufficient, the circulation pump 440 can be activated. This prevents the water level in the purified water tank 710 from continuing to rise. The booster pump 310 has a large water flow rate, which can quickly cool the first water-cooling component 410 during the water production process. The circulation pump 440 typically has a smaller flow rate but also lower noise. Through the above settings, the water purifier can provide a large amount of cold water with relatively low overall noise.

[0042] As described above, the filter assembly 100 may include a concentrate outlet 103, which is connected to a water storage tank 200 via a concentrate pipeline 500. Under the pressure of the booster pump 310, purified water passes through the filter assembly 100. The ratio of purified water to the remaining concentrate that does not pass through the filter assembly 100 is the wastewater ratio. The wastewater ratio can be limited by, for example, a wastewater ratio valve. Exemplarily, a wastewater ratio solenoid valve 520 may be connected in series on the concentrate pipeline 500. The wastewater ratio solenoid valve 520 may include a valve core with a small orifice, which can function as a wastewater ratio valve. When the wastewater ratio solenoid valve 520 is closed, it maintains the pressure required for the filter assembly 100 to operate and allows a certain flow rate of concentrate to pass through it. In embodiments where the countertop water purifier also includes a temperature sensor for detecting the water temperature in the cold water chamber, the controller can also be used to open the wastewater ratio solenoid valve 520 and the cooling component when the water level in the purified water tank 710 is higher than or equal to the upper limit of the water level and the water temperature in the cold water chamber is higher than a preset temperature. With the wastewater ratio solenoid valve 520 open, raw water can quickly pass through the wastewater ratio solenoid valve 520 from a passage other than the wastewater ratio valve, thereby flushing the filter component 100. The rapidly discharged raw water also prevents the filter component 100 from producing purified water; all raw water can return to the water storage tank 200 through the raw water pipeline 300, the first water-cooling component 410, and the first water-cooling pipeline 420 under the action of the booster pump 310. In summary, the water purifier can also flush the filter component 100 through the wastewater ratio solenoid valve 520 and perform water-cooling heat dissipation on the cooling component during the flushing process. The first water-cooling component 410 can also be flushed during the flushing process to prevent scaling on the first water-cooling component 410.

[0043] In the description of this utility model, it should be understood that the directional terms such as "front", "rear", "up", "down", "left", "right", "horizontal", "vertical", "horizontal", "top", and "bottom" indicate the orientation or positional relationship, which are usually based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0044] For ease of description, relative terms such as "above," "over," "on the upper surface of," and "above" are used here to describe the regional positional relationship of one or more components or features shown in the figures to other components or features. It should be understood that relative terms include not only the orientation of the component as depicted in the figure but also different orientations during use or operation. For example, if the components in the figures are inverted as a whole, "above" or "above other components or features" will include cases where the component is "below" or "under" other components or features. Thus, the exemplary term "above" can include both "above" and "below." Furthermore, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and this document intends to include all such cases.

[0045] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, parts, components, and / or combinations thereof.

[0046] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0047] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit the utility model to the described embodiments. Furthermore, those skilled in the art will understand that this utility model is not limited to the above embodiments, and many more variations and modifications can be made based on the teachings of this utility model, all of which fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A table water purifier having a total water outlet, characterized by, The table type water purifier comprises: a water storage tank; a filter assembly having a raw water inlet and a purified water outlet, the raw water inlet being connected to the water storage tank via a raw water pipeline, a booster pump being arranged in series on the raw water pipeline; a purified water tank, a water inlet of the purified water tank being connected to the purified water outlet; and a cold tank, the cold tank comprising a cold water cavity, a refrigeration assembly and a first water cooling assembly, a water inlet of the cold water cavity being connected to a water outlet of the purified water tank via a water supplement pipeline, a water outlet of the cold water cavity being connected to a total water outlet, wherein: a cold end of the refrigeration assembly is capable of heat exchange with the cold water cavity, and a hot end of the refrigeration assembly is capable of heat exchange with the first water cooling assembly; and the first water cooling assembly is arranged in series on the raw water pipeline. The first water cooling assembly is arranged upstream of the booster pump.

2. The table-top water purifier as claimed in claim 1 wherein, The table type water purifier further comprises:

3. The table-top water purifier as claimed in claim 2, wherein, a first circulation pipeline, a water inlet of the first circulation pipeline being connected to a water outlet of the first water cooling assembly, a water outlet of the first circulation pipeline being connected to the water storage tank; a circulation pump, the circulation pump being arranged in series on the first circulation pipeline. The table type water purifier further comprises:

4. The table-top water purifier as claimed in claim 1 wherein, a second water cooling assembly, the second water cooling assembly being capable of heat exchange with the hot end of the refrigeration assembly; a second circulation pipeline, a water inlet of the second circulation pipeline being connected to the water storage tank, a water outlet of the second circulation pipeline being connected to a water inlet of the second water cooling assembly; a third circulation pipeline, a water inlet of the third circulation pipeline being connected to a water outlet of the second water cooling assembly, a water outlet of the third circulation pipeline being connected to the water storage tank; and a circulation pump, the circulation pump being arranged in series on at least one of the second circulation pipeline and the third circulation pipeline. The table type water purifier further comprises:

5. A table water purifier according to claim 3 or 4, characterized in that a water level detector for detecting a water level in the purified water tank; a temperature sensor for detecting a water temperature in the cold water cavity; and a controller, the controller being electrically connected to the water level detector, the temperature sensor and the booster pump, the circulation pump and the refrigeration assembly, the controller being configured to control the booster pump and the refrigeration assembly to work when the water level in the purified water tank is lower than or equal to a lower limit of water level, and to control the circulation pump and the refrigeration assembly to work when the water level in the purified water tank is higher than or equal to an upper limit of water level and the water temperature in the cold water cavity is higher than a preset temperature. The table type water purifier further comprises:

6. The table-top water purifier as claimed in claim 1 wherein, a water level detector for detecting a water level in the purified water tank; and a controller, the controller being electrically connected to the water level detector, the booster pump and the refrigeration assembly, the controller being configured to control the booster pump and the refrigeration assembly to work when the water level in the purified water tank is lower than or equal to a lower limit of water level. The filter assembly further comprises a concentrated water outlet, the concentrated water outlet being connected to the water storage tank via a concentrated water pipeline, a waste water ratio electromagnetic valve being arranged in series on the concentrated water pipeline; 7. The table-top water purifier as claimed in claim 6 wherein, The table type water purifier further comprises a temperature sensor for detecting a water temperature in the cold water cavity. ​ The controller is further configured to: when the water level in the clean water tank is higher than or equal to the upper limit of the water level and the water temperature in the cold water cavity is higher than the preset temperature, control the waste water ratio electromagnetic valve and the refrigeration assembly to be turned on.

8. The table-top water purifier as claimed in claim 1 wherein, A cold water pump is arranged on the water supplement pipeline.

9. The table-top water purifier as claimed in claim 1 wherein, The water outlet of the clean water tank is further connected to the total water outlet through a water outlet pipeline, and a water outlet pump is arranged on the water outlet pipeline.

10. The table-top water purifier as claimed in claim 9, wherein, A heating body is arranged in series on the water outlet pipeline.

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