Table type water purifier

Abstract

The table type water purifier is provided with a main water outlet and comprises a water storage tank, a filtering assembly, a water purifying tank and a cold container, the filtering assembly is provided with a raw water opening and a water purifying opening, the raw water opening is connected to the water storage tank through a raw water pipeline, and a booster pump is arranged on the raw water pipeline; a water inlet of the water purification tank is connected to the water purification port through a water purification pipeline; 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, and 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, the hot end of the refrigeration assembly can exchange heat with the first water cooling assembly, and the first water cooling assembly is arranged on the water purification pipeline in series. Therefore, 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 is needed, and no extra noise is generated.

Description

TECHNICAL FIELD

[0001] The utility model relates to water treatment technical field, specifically, relate to a table type purifier. BACKGROUND

[0002] With the development of the times, people's demand for drinking water quality is higher and higher, and the water purifier has been recognized and purchased by most people. The water purifier can purify the water in the water tank or the tap water to provide high-quality purified water to the user. The water purifier on the market can include embedded water purifier, under-kitchen water purifier and table type purifier, etc. The table type purifier has become the choice of many people because of its convenient use.

[0003] The table type purifier is usually provided with a water tank for storing raw water. Therefore, the table type purifier can be used in places such as restaurants, bedrooms, etc. without tap water source. For the water purifier capable of providing cold water, a refrigeration assembly is arranged inside. The refrigeration assembly needs to be cooled during the refrigeration process, so the existing water purifier capable of providing cold water is usually provided with a fan to provide sufficient air for cooling.

[0004] Because the specific heat capacity of air is small, under the same refrigeration power, the temperature of the air around the refrigeration assembly rises quickly, and a large amount of air needs to be pumped around the refrigeration assembly by the fan to keep the refrigeration assembly in good cooling state. The fan capable of pumping air in large flow has large noise, which is not good for user experience. SUMMARY

[0005] In order to at least partially solve the problems existing in the prior art, some embodiments of the utility model provide a table type purifier, a water storage tank, a filter assembly, the filter assembly has a raw water inlet and a purified water outlet, the raw water inlet is connected to the water storage tank through a raw water pipeline, and a booster pump is arranged on the raw water pipeline; a purified water tank, the water inlet of the purified water tank is connected to the purified water outlet through a purified water pipeline; and a cold tank, the cold tank includes a cold water cavity, a refrigeration assembly and a first water cooling assembly, the water inlet of the cold water cavity is connected to the water outlet of the purified water tank through a water supplement pipeline, and the water outlet of the cold water cavity is connected to a total water outlet; wherein: the cold end of the refrigeration assembly can exchange heat with the cold water cavity, the hot end of the refrigeration assembly and the first water cooling assembly can exchange heat, and the first water cooling assembly is arranged in series on the purified water pipeline. In the above technical solution, the purified water prepared by the filter assembly can be used to cool the refrigeration assembly through the first water cooling assembly during the water preparation process of the table type purifier. Because the booster pump will work and produce noise during the water preparation process, the refrigeration process and the water preparation process of the table type purifier are carried out at the same time, so that an additional pumping device does not need to be arranged, and additional noise will not be produced.

[0006] Exemplarily, the table-type water purifier further comprises a cold water temperature sensor configured to detect a water temperature in the cold water cavity; and a controller electrically connected to the cold water temperature sensor and the booster pump, and configured to control the booster pump to work when the water temperature in the cold water cavity is higher than a preset temperature range. Such a table-type water purifier can be free of additional pumping components and water cooling pipelines, and has a simple structure and reduced cost.

[0007] Exemplarily, the table-type water purifier further comprises a water level detector configured to detect a water level in the purified water tank, and the controller is configured to control the booster pump to stop working when the water level in the purified water tank is higher than or equal to an upper limit of the water level. In this way, water overflow of the purified water tank can be avoided.

[0008] Exemplarily, the top of the purified water tank is provided with an overflow port, the overflow port is in communication with the raw water pipeline upstream of the booster pump or the water storage tank, and the controller is configured to control the booster pump to stop working when the water temperature in the cold water cavity is lower than a preset temperature range. By providing the overflow port, the case that the purified water in the purified water tank is too much can be avoided, and the booster pump can be controlled to stop working only when the water temperature in the cold water cavity is lower than the preset temperature range. In this way, a large amount of cold water can be provided to the user, and the temperature of the purified water supplied to the cold water cavity will not be too high.

[0009] Exemplarily, the table-type water purifier further comprises a second water cooling assembly capable of heat exchange with the hot end of the refrigeration assembly; a first circulation pipeline, a water inlet of the first circulation pipeline being connected to the water storage tank, and a water outlet of the first circulation pipeline being connected to a water inlet of the second water cooling assembly; a second circulation pipeline, a water inlet of the second circulation pipeline being connected to a water outlet of the second water cooling assembly, and a water outlet of the second circulation pipeline being connected to the water storage tank; and a circulation pump, the circulation pump being arranged on at least one of the first circulation pipeline and the second circulation pipeline. In this way, when water is produced, the purified water can pass through the first water cooling assembly for water cooling, and the raw water pumped by the circulation pump can pass through the second water cooling assembly for water cooling, and the flow rates of the two do not interfere with each other, and the water cooling effect is better.

[0010] Exemplarily, the table-type water purifier further comprises a cold water temperature sensor configured to detect a water temperature in the cold water cavity; and a water level detector configured to detect a water level in the purified water tank, wherein the controller is configured to control the circulation pump to work when the water level in the purified water tank is higher than or equal to an upper limit of the water level and the water temperature in the cold water cavity is higher than a preset temperature range. In this way, when the purified water in the purified water tank is full, the heat generated by the refrigeration assembly when working can be cooled by the raw water pumped by the circulation pump, and the table-type water purifier can be free of continued water production for cooling. In this way, cold water with a lower temperature or a larger amount of cold water can be provided, and the table-type water purifier is applicable to a table-type water purifier without an overflow port of the purified water tank.

[0011] Exemplarily, the desktop water purifier further comprises a controller configured to control the circulation pump to stop working during the working of the booster pump.

[0012] Exemplarily, a cold water pump is arranged on the water supplement pipeline. The cold water pump can pump cold water to a height above the cold water cavity or above the liquid level of the purified water tank, which can effectively increase the water flow and improve user experience. Moreover, the cold tank is only connected with the outside through the cold water pipeline. When the user takes cold water, the cold water pump can pump normal-temperature purified water from the purified water tank to the cold tank to squeeze the cold water in the cold tank out of the total water outlet. Thus, the cold tank does not need to be provided with a vent for balancing air pressure, and the structure is relatively simple. Without being connected with the atmosphere through the vent, foreign matters, dust and bacteria can be prevented from entering the cold tank, and the cold tank is not easy to breed bacteria, which can be simply maintained through emptying and the like.

[0013] Exemplarily, the water outlet of the purified 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. Similar to the cold water pump, the water outlet pump can also make the height of the total water outlet not be limited, and provide normal-temperature water with a large flow.

[0014] Exemplarily, a heating body is arranged in series on the water outlet pipeline. Thus, the normal-temperature purified water in the purified water tank can be heated by the heating body and provided to the user. Optionally, the water outlet pump can control the flow, so that the water purifier can provide the user with hot water with a relatively accurate temperature.

[0015] A series of simplified concepts are introduced in the utility model content, which will be further described in detail in the specific embodiment part. The utility model content part does not mean trying to limit the key features and necessary technical features of the claimed technical solution, and does not mean trying to determine the protection scope of the claimed technical solution.

[0016] The advantages and characteristics of the present application will be described in detail below in combination with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0017] The following drawings of the present application are hereby incorporated as part of the present application for understanding the present application. The embodiments of the present application and the description thereof shown in the drawings are used to explain the principles of the present application. In the drawings,

[0018] Figure 1 is a water pipeline diagram of a desktop water purifier according to a first exemplary embodiment of the present application;

[0019] Figure 2 is a water pipeline diagram of a desktop water purifier according to a second exemplary embodiment of the present application;

[0020] Figure 3 Water circuit diagram of the table type water purifier according to the third exemplary embodiment of the present application.

[0021] In the above drawings, the following reference signs are used:

[0022] 10, total water outlet; 100, water storage tank; 200, filter assembly; 201, raw water inlet; 202, purified water outlet; 203, concentrated water outlet; 310, raw water pipeline; 311, booster pump; 320, concentrated water pipeline; 321, waste water proportional electromagnetic valve; 400, purified water tank; 410, overflow outlet; 420, overflow pipeline; 500, purified water pipeline; 510, first water cooling assembly; 600, cold tank; 700, water supplement pipeline; 710, cold water pump; 800, second water cooling assembly; 810, first circulation pipeline; 820, second circulation pipeline; 830, circulation pump; 900, water outlet pipeline; 910, water outlet pump; 920, heating body. DETAILED DESCRIPTION

[0023] In the following description, numerous specific details are provided in order to provide a thorough understanding of the present application. One of ordinary skill in the art will realize, however, that the application can be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order not to unnecessarily obscure the present application.

[0024] In order to thoroughly understand the embodiments of the present application, detailed structures will be presented in the following description. Obviously, the implementation of the embodiments of the present application is not limited to the special details familiar to those skilled in the art. The preferred embodiments of the present application are described in detail as follows, however, in addition to these detailed descriptions, the present application can also have other embodiments.

[0025] The embodiments of the present application provide a table type water purifier. The table type water purifier according to the embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0026] As Figure 1As shown, the table water purifier has a total water outlet 10, which can provide filtered normal temperature water and refrigerated cold water. As described above, the table water purifier includes a water storage tank 100, which can store raw water. The raw water includes, but is not limited to, tap water, bottled water, etc. Optionally, the user can detach the water storage tank 100 from the main body of the table water purifier, refill the raw water, and then install it on the main body of the table water purifier. The table water purifier can also include a filter assembly 200, which has a raw water inlet 201 and a purified water outlet 202. The raw water inlet 201 can be connected to the water storage tank 100 via a raw water pipeline 310, and a booster pump 311 is connected in series on the raw water pipeline 310. The booster pump 311 can provide pressure for the raw water in the water storage tank 100, so that the purified water can be produced by the filter assembly 200. The filter assembly 200 can include a reverse osmosis filter core, an ultrafiltration filter core, a nanofiltration filter core, or a filter core composed of any two or more of them. Compared with other types of filter cores, the reverse osmosis filter core and the nanofiltration filter core can provide better filtering effect, and the booster pump 311 used also needs to be able to provide greater raw water pressure. These two types of filter cores also produce a certain proportion of concentrated water when working, and the table water purifier can also be provided with a concentrated water outlet 203. Optionally, the filter assembly 200 can include a pre-filter core and a central filter core. The pre-filter core can include one of activated carbon, polypropylene (PP) cotton, porous ceramic filter core, etc., or a filter core composed of any two or more of them. The central filter core includes the above-mentioned ultrafiltration filter core, nanofiltration filter core, or a filter core composed of any two or more of them. The pre-filter core can be arranged before the central filter core, for preliminary filtering of the water entering the central filter core to prolong the service life of the central filter core.

[0027] The table water purifier can also include a purified water tank 400, and the water inlet of the purified water tank 400 is connected to the purified water outlet 202 through a purified water pipeline 500. The purified water tank 400 can store a large amount of purified water produced by the filter assembly 200, and when the user takes cold water, the purified water tank 400 can supplement normal temperature purified water into the cold water cavity. In this way, it is not necessary to start the booster pump 311 to produce water by the filter assembly 200 every time the user takes cold water, which can reduce the start-stop frequency of the booster pump 311, prolong the service life of the filter assembly 200, and reduce the noise of the water purifier. In some embodiments, the filter assembly 200 has a small-flux filter core (daily water production less than 400 gallons). In this case, the purified water tank 400 can also temporarily store the produced purified water when the user does not take water, thereby allowing to provide the user with large-flux normal temperature water.

[0028] The table-top water purifier can further include a cold tank 600, which can include a cold water cavity (not shown) disposed inside the cold tank 600. Optionally, the cold water cavity can have a shape substantially the same as the main body of the cold tank 600, i.e., a cuboid shape. Optionally, the cold tank 600 can have a tortuous conduit formed therein, and the cold water cavity has an inner cavity of the conduit formed therein, so as to increase the inner surface area of the cold water cavity. The cold tank 600 can further include a refrigeration assembly, which can include a compressor-type refrigeration assembly, a semiconductor refrigeration assembly, or other existing or future refrigeration assemblies. Regardless of the type of the refrigeration assembly, during the refrigeration process, heat is generated, so that one part of the refrigeration assembly forms a hot end, and the other part forms a cold end. The cold end of the refrigeration assembly can exchange heat with the cold water cavity, so as to cool the water in the cold water cavity. The water inlet of the cold water cavity is connected to the water outlet of the water tank 400 through a water supply pipeline 700, and the water outlet of the cold water cavity is connected to the total water outlet 10. In some embodiments, a cold water pump 710 can be disposed between the cold tank 600 and the water tank 400, and the cold water pump 710 can supply water from the water tank 400 to the cold tank 600 when the cold tank 600 is short of water. In other embodiments, the cold tank 600 can rely on gravity to supply water to be refrigerated from the water tank 400. In summary, the water purifier can provide cold water at a temperature lower than room temperature to the user. Optionally, the total water outlet 10 can be connected to a faucet or a water outlet nozzle. Optionally, the total water outlet 10 can have multiple openings separated from each other, so that water treated by different processes, such as refrigeration or heating, can be provided to the user through different openings without interfering with each other.

[0029] For any existing type of refrigeration assembly, when the temperature difference between the hot end and the cold end is too large, the refrigeration efficiency will decrease. For example, for a semiconductor refrigeration, when the temperature difference between the hot end and the cold end reaches 50 degrees or more, the refrigeration effect is greatly reduced, so that the temperature of the water in the cold tank 600 hardly decreases, and the water purifier is difficult to provide cold water at the required temperature. Therefore, the hot end of the refrigeration assembly needs to be cooled. The hot end of the refrigeration assembly can exchange heat with the first water cooling assembly 510, and the first water cooling assembly 510 can transfer the heat of the hot end to the cooling water. Since water has a specific heat capacity much larger than air, the temperature of the same volume of water increases much less than the same volume of air during the water passing through the first water cooling assembly 510. In some embodiments, the refrigeration assembly includes a compressor and a refrigerant circulation pipeline. In this case, the first water cooling assembly 510 can be configured as a pipeline nested with each other, and one of the refrigerant and the cooling water flows in the inner pipe of the first water cooling assembly 510, and the other flows between the outer wall of the inner pipe and the outer pipe. Optionally, the first water cooling assembly 510 can include fins and a water pipe made of heat-conducting material embedded in the fins. Optionally, the first water cooling assembly 510 can include a water cooling head. For a semiconductor refrigeration, since it does not have a pipeline structure, the first water cooling assembly 510 can adopt a flat component such as the water cooling head described above.

[0030] The first water cooling assembly 510 can be arranged in series on the purified water pipeline 500. The purified water produced by the filter assembly 200 can be used as cooling water to cool the first water cooling assembly 510. The purified water with increased temperature can be temporarily stored in the purified water tank 400, and slowly cooled when the water production is stopped. When the user takes hot water or normal temperature water, new purified water can be supplemented in the purified water tank 400, and the refrigeration assembly can not work when producing the purified water, so that the purified water passing through the first water cooling assembly 510 remains at normal temperature. In summary, since the capacity of the purified water tank 400 is relatively large, the heat transferred to the purified water during the refrigeration of the cold tank 600 will not cause the temperature of the purified water tank 400 to increase significantly. Therefore, it is almost impossible for the cold tank 600 to supplement water with a very high temperature from the purified water tank 400. Experiments show that, in the case of refrigerating water to a preset temperature within a specified time, a refrigeration power of 60 W, and a temperature difference of 10 degrees between cold water and air, the required air flow rate is 279 L / min. In the case of the same refrigeration power of 60 W and a temperature difference of 5 degrees between cold water and cooling water, the required water flow rate is only 170 mL / min.

[0031] In the above technical solution, the purified water produced by the filter assembly 200 can be used to cool the refrigeration assembly through the first water cooling assembly 510 during the water production of the desktop water purifier. Since the booster pump 311 will work and produce noise during water production, the refrigeration process and water production process of the desktop water purifier can be carried out at the same time, without the need to set up an additional pumping device and without the generation of additional noise.

[0032] Exemplarily, in the case that the filter assembly 200 includes the concentrated water port 203, the concentrated water port 203 can be connected to the concentrated water return port of the storage water tank 100 via the concentrated water pipeline 320. The waste water ratio electromagnetic valve 321 can be arranged on the concentrated water pipeline 320. When the waste water ratio electromagnetic valve 321 is in a closed state, the pressure required for the operation of the filter assembly 200 can be maintained, and when the waste water ratio electromagnetic valve 321 is in an open state, the raw water can quickly pass through the filter assembly 200 to flush the filter assembly 200 and prolong the service life of the filter assembly 200.

[0033] As mentioned above, the water supplement pipeline 700 can also be provided with a cold water pump 710. The cold water pump 710 can be arranged downstream of the clean water tank 400. The cold water pump 710 can pump cold water to a height higher than the cold water cavity or higher than the liquid level of the clean water tank 400, which can effectively increase the water flow and improve the user experience. In addition, the cold tank 600 is only connected to the outside through the cold water pipeline. When the user takes cold water, the cold water pump 710 can extract normal-temperature clean water from the clean water tank 400 to supplement the cold tank 600, and squeeze the cold water in the cold tank 600 out of the total water outlet 10. Therefore, the cold tank 600 does not need to be provided with an air vent for balancing air pressure, and the structure is relatively simple. By not being connected to the atmosphere through the air vent, foreign matter, dust and bacteria can be prevented from entering the cold tank 600, and bacteria can be prevented from breeding in the cold tank 600, which can be simply maintained by emptying and the like.

[0034] The clean water tank 400 is also connected to the total water outlet 10 through a water outlet pipeline 900, and the water outlet pipeline 900 is provided with a water outlet pump 910. The normal-temperature clean water in the clean water tank 400 can be provided to the user through the water outlet pipeline 900. Similar to the cold water pump 710, the water outlet pump 910 can also make the height of the total water outlet 10 unrestricted, and provide a large flow of normal-temperature water.

[0035] The water outlet pipeline 900 is provided with a heating body 920 in series. The heating body 920 can include but is not limited to a thick-film heating body 920, a hot pot, an electromagnetic heater and other existing or future heating elements. Therefore, the normal-temperature clean water in the clean water tank 400 can be heated by the heating body 920 and provided to the user. Optionally, the water outlet pump 910 can control the flow, so that the water purifier can provide the user with hot water with relatively accurate temperature.

[0036] The desktop water purifier can also include a water level detector for detecting the water level in the clean water tank 400 and a controller. The controller can be electrically connected to the water level detector, the booster pump 311 and the refrigeration assembly. The water level detector includes but is not limited to existing water level sensors such as infrared water level sensors, ultrasonic water level sensors, float sensors and the like, as well as future water level sensors. Accordingly, these water level sensors can be arranged inside or outside the clean water tank 400.

[0037] As the water level in the clean water tank 400 gradually rises during the water production process, if the refrigeration assembly is working and the booster pump 311 is continuously controlled to work, the clean water tank 400 can be overflowed. The controller is configured to control the booster pump 311 to stop working when the water level in the clean water tank 400 is higher than or equal to the upper limit of the water level. In this way, the water in the clean water tank 400 can be prevented from overflowing. In the case where the booster pump 311 stops working, the refrigeration assembly can also stop working correspondingly to prevent overheating. The controller can also be configured to control the booster pump 311 and the refrigeration assembly to work when the water level in the clean water tank 400 is lower than or equal to the lower limit of the water level. In this way, the booster pump 311 can be controlled to work to fill the clean water tank 400 after the user takes water from the clean water tank 400 through the water level detector. During this period, the refrigeration assembly can be controlled to work to dissipate heat from the refrigeration assembly by using the raw water during the water filling period to pass through the first water-cooled assembly 510. Specifically, the controller can be built by using electronic elements such as timers, comparators, registers, digital logic circuits, or implemented by using processor chips such as single-chip microcomputers, microprocessors, programmable logic controllers (PLC), digital signal processors (DSP), field programmable gate arrays (FPGA), programmable logic arrays (PLA), application-specific integrated circuits (ASIC), and peripheral circuits thereof.

[0038] As shown in Figure 2 Exemplarily, the desktop water purifier can further include a second water-cooled assembly 800, and the second water-cooled assembly 800 and the hot end of the refrigeration assembly can be capable of heat exchange. The desktop water purifier can further include a first circulation pipeline 810 and a second circulation pipeline 820. The water inlet of the second circulation pipeline 820 is connected to the water storage tank 100, and the water outlet of the first circulation pipeline 810 is connected to the water inlet of the second water-cooled assembly 800. The water inlet of the second circulation pipeline 820 is connected to the water outlet of the second water-cooled assembly 800, and the water outlet of the second circulation pipeline 820 is connected to the water storage tank 100. At least one of the first circulation pipeline 810 and the second circulation pipeline 820 is provided with a circulation pump 830 in series. In this way, the circulation pump 830 can pump raw water between the water storage tank 100 and the second water-cooled assembly 800.

[0039] In some embodiments using semiconductor refrigeration, two or more semiconductor refrigerators can be provided on each cold tank 600. As shown in Figure 2As shown, each semiconductor refrigerator can be matched with a water cooling head, one or more water cooling heads can be used as the first water cooling assembly 510, and the other water cooling heads can be used as the second water cooling assembly 800, and the first water cooling assembly 510 and the second water cooling assembly 800 are connected to the water storage tank 100 through different water circuits. For the above embodiment in which each semiconductor refrigerator is matched with a water cooling head, when only the booster pump 311 is working or only the circulating pump 830 is working, there can be cooling water only in one water cooling head. In this case, only part of the semiconductor refrigerators can work normally. Since the purified water and the raw water need to be prevented from mixing, the first water cooling assembly 510 and the second water cooling assembly 800 can be integrated, and only separated from each other in the water circuit. The first water cooling assembly 510 and the second water cooling assembly 800 can include a cooling fin and a cooling pipe arranged on the cooling fin. The first water cooling assembly 510 and the second water cooling assembly 800 can share the same cooling fin, one of the at least two cooling pipes is connected to the first circulating pipe 810 and the second circulating pipe 820, and the other of the at least two cooling pipes is connected between the raw water pipe 320 and the first water cooling pipe. In this way, when making water, the purified water can be cooled by the first water cooling assembly 510, and the raw water pumped by the circulating pump 830 can be cooled by the second water cooling assembly 800, and the flow of each other does not interfere with each other, and the water cooling effect is better.

[0040] Exemplarily, the table type water purifier can further include a cold water temperature sensor for detecting the temperature of the water in the cold water cavity. The temperature sensor can include a thermal resistance, a thermocouple or an infrared temperature sensor, and is arranged inside or outside the cold water cavity accordingly. The controller controls the circulating pump 830 to work when the water level in the purified water tank 400 is higher than or equal to the upper limit of the water level and the temperature of the water in the cold water cavity is higher than the preset temperature range. Alternatively, the circulating pump 830 can be manually started when the user confirms that the cold water temperature does not meet the demand. In this way, when the purified water in the purified water tank 400 is full, the heat generated by the refrigeration assembly when working can be cooled by the raw water pumped by the circulating pump 830, and the table type water purifier can not need to continue to make water for cooling, which can provide colder or more cold water, and is suitable for the table type water purifier without the overflow port 410 of the purified water tank 400.

[0041] Exemplarily, the controller can also be used to control the circulating pump 830 to stop working during the working of the booster pump 311. For the embodiment in which the first water cooling assembly 510 can dissipate heat for all refrigeration assemblies, the purified water made by the booster pump 311 is sufficient to meet the heat dissipation demand of the refrigeration assembly, and there is no need to additionally start the circulating pump 830 to cause noise increase.

[0042] Exemplarily, the top of the purified water tank 400 can be provided with an overflow port 410. The controller is configured to control the booster pump 311 to stop working when the water temperature in the cold water cavity is lower than a preset temperature range. As shown in Figure 3 Optionally, the overflow port 410 can be in communication with the raw water pipeline 310 upstream of the booster pump 311 through an overflow pipeline 420. When the water level in the purified water tank 400 reaches the height of the overflow port 410, the overflow purified water can be pumped to the filter assembly 200 together with the raw water by the booster pump 311. Optionally, the overflow port 410 can be in communication with the storage water tank 100 through the overflow pipeline 420. In some embodiments, the purified water tank 400 and the storage water tank 100 can be integrated, and both can be fixed to the main body of the table-type water purifier. Optionally, the purified water tank 400 and the storage water tank 100 can be detached from the main body of the table-type water purifier together. Optionally, the purified water tank 400 and the storage water tank 100 can be in a split structure, and can be detached from the main body of the table-type water purifier respectively. In some embodiments, only the storage water tank 100 can be detached, and the purified water tank 400 is fixed to the main body of the table-type water purifier. In the above several embodiments, the purified water tank 400 can directly overflow the excessive purified water to the storage water tank 100 through the overflow port 410 in communication with the storage water tank 100. Optionally, the purified water tank 400 and the storage water tank 100 can exchange heat, so that the purified water with a higher temperature can transfer heat to the raw water in the storage water tank 100. The overflow purified water can also bring heat to the raw water in the storage water tank 100. The water with a higher temperature has a smaller specific gravity, and the purified water overflowed to the storage water tank 100 is usually also higher in temperature, thereby further slowing down the increase of the water temperature in the purified water tank 400. In summary, by providing the overflow port 410, the excessive purified water in the purified water tank 400 can be considered, and the booster pump 311 can be controlled to stop working only when the water temperature in the cold water cavity is lower than the preset temperature range. Thus, a large amount of cold water can be provided to the user, and the temperature of the purified water supplemented to the cold water cavity is also not very high.

[0043] Exemplarily, the controller can be electrically connected to the cold water temperature sensor, and configured to control the booster pump 311 to work when the water temperature in the cold water cavity is higher than the preset temperature range. In the case where the purified water tank 400 is provided with the overflow port 410, the booster pump 311 can be controlled to work as long as the water temperature in the cold water cavity is higher than the preset temperature range, and the refrigeration assembly working can be cooled. Such a table-type water purifier can not need to be provided with an additional pumping assembly and water cooling pipeline, and has a simple structure and reduced cost.

[0044] In the description of the utility model, it is understood that the orientation words such as "front", "rear", "upper", "lower", "left", "right", "transverse", "vertical", "perpendicular", "horizontal" and "top", "bottom" and the like indicated orientation or positional relationship is usually based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, in the absence of the opposite statement, these orientation words do not indicate and imply that the device or element indicated must have a particular orientation or be constructed and operated in a particular orientation, therefore can not be understood as the limitation of the protection scope of the utility model;The orientation words "inner", "outer" refer to the inner and outer of the contour of each component.

[0045] For the convenience of description, regional relative terms such as "on", "above", "upper surface", "upper" and the like can be used here to describe the regional position relationship of one or more components or features shown in the drawing with other components or features.It should be understood that the regional relative terms not only include the orientation of the components described in the drawing, but also include different orientations in use or operation.For example, if the components in the drawing are inverted as a whole, the components "above" or "on" other components or features will include the case of "below" or "under" other components or structures.Therefore, the exemplary term "above" can include both "above" and "below".In addition, these components or features can also be positioned at other different angles (for example, rotated by 90 degrees or other angles), and all these cases are intended to be included herein.

[0046] It should be noted that the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application.As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, it means that the features, steps, operations, components, assemblies and / or their combinations are present.

[0047] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence of precedence.It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0048] The utility model discloses has been through the above embodiment has been explained, but should understand, the above embodiment is only for the purpose of example and illustration, and is not intended to limit the utility model to the range of described embodiment. In addition, those skilled in the art can understand that the utility model is not limited to the above embodiment, and more kinds of variations and modifications can be made according to the teaching of the utility model, and the variations and modifications all fall within the range of the utility model claimed. The protection scope of the utility model is defined by the attached claims and its equivalent range.

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 on the raw water pipeline; a purified water tank, a water inlet of the purified water tank being connected to the purified water outlet via a purified water pipeline; and a cold water tank, the cold water 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 the total water outlet; wherein: a cold end of the refrigeration assembly is capable of heat exchange with the cold water cavity, 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 purified water pipeline.

2. The table-top water purifier as claimed in claim 1 wherein, The table type water purifier further comprises: a cold water temperature sensor for detecting a water temperature in the cold water cavity; a controller being electrically connected to the cold water temperature sensor and the booster pump, the controller being configured to control the booster pump to work when the water temperature in the cold water cavity is higher than a preset temperature range.

3. The table-top water purifier as claimed in claim 2 wherein, The table type water purifier further comprises a water level detector for detecting a water level in the purified water tank, the controller being configured to control the booster pump to stop working when the water level in the purified water tank is higher than or equal to an upper limit of the water level.

4. The table-top water purifier as claimed in claim 2 wherein, A top of the purified water tank is provided with an overflow outlet, the overflow outlet being in communication with the water storage tank or a raw water pipeline upstream of the booster pump, the controller being configured to control the booster pump to stop working when the water temperature in the cold water cavity is lower than the preset temperature range.

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

6. The table water purifier according to claim 5, characterized in that, The table type water purifier further comprises: a cold water temperature sensor for detecting a water temperature in the cold water cavity; and a water level detector for detecting a water level in the purified water tank; and a controller, wherein: the controller is configured to control the circulation pump to work when the water level in the purified water tank is higher than or equal to an upper limit of the water level and the water temperature in the cold water cavity is higher than a preset temperature range.

7. The table-top water purifier as claimed in claim 5 wherein, The table type water purifier further comprises a controller, the controller being configured to control the circulation pump to stop working during the working of the booster pump.

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 purified water tank is further connected to the total water outlet via a water outlet pipeline, a water outlet pump being 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.

Images