Heating System and Water Purifier

Abstract

The present invention relates to the field of household appliances, and provides a heating system and a water purifier. The heating system includes: a tank body, the tank body having an adjacent bottom surface and a first side surface, the tank body having a water inlet and a water outlet, the distance from the water outlet to the bottom surface being greater than the distance from the water inlet to the bottom surface, and the distance from the water outlet to the first side surface being greater than the distance from the water inlet to the first side surface; a heating element, the heating element being installed in the tank body. According to the heating system of the embodiment of the present invention, by designing the distances from the water inlet and outlet to the bottom surface and the first side surface, the heating system can ensure the water outlet temperature whether it is placed vertically or horizontally, and has a wider application range.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and in particular to a heating system and a water purifier. Background Art

[0002] With the improvement of living standards, people have higher requirements for water quality, and the popularity of water purifiers is increasing. The raw water (tap water or well water, etc.) input into the water purifier may contain more impurities, such as organic matter or inorganic salts. During use, the water purifier can filter out the impurities in the raw water introduced and output pure water.

[0003] Regarding drinking water heating, most existing solutions on the market use kettles, pipeline machines and other heating devices to heat drinking water, which will increase the number of kitchen appliances and occupy kitchen space. At the same time, waiting for water collection is also very time-consuming. The integrated design of heating function and water purification function has come into people's vision. However, water purifiers with integrated heating function are large in size and require a large space. When the installation space is limited, such as when there is insufficient space under the cabinet, users may turn the water purifier upside down in order to install it, causing the water purifier to malfunction during use. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a heating system that can be placed vertically and horizontally.

[0005] According to an embodiment of the first aspect of the present invention, the heating system includes: a tank body, the tank body having an adjacent bottom surface and a first side surface, the tank body having a water inlet and a water outlet, the distance from the water outlet to the bottom surface is greater than the distance from the water inlet to the bottom surface, and the distance from the water outlet to the first side surface is greater than the distance from the water inlet to the first side surface; a heating element, the heating element being installed in the tank body.

[0006] According to the heating system of the embodiment of the present invention, by designing the distance between the water inlet and outlet and the bottom surface and the first side surface, the heating system can ensure the water outlet temperature when placed vertically or horizontally, and has a wider range of applications.

[0007] The water purifier according to the second aspect of the present invention comprises: a filtration system, the filtration system having a raw water inlet and a clean water outlet; a heating system as described in any of the above, the water inlet of the heating system is connected to the clean water outlet, the water outlet of the heating system is connected to the first water supply port of the water purifier, and the heating system is used to heat the water flowing through the heating system.

[0008] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. Brief Description of the Drawings

[0009] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0010] Figure 1 It is the water circuit schematic diagram of the water purifier provided by the embodiment of the present invention;

[0011] Figure 2 It is the structural schematic diagram of the water purifier provided by the embodiment of the present invention when placed vertically;

[0012] Figure 3 It is the structural schematic diagram of the water purifier provided by the embodiment of the present invention when placed horizontally;

[0013] Figure 4 It is the exploded view of the water purifier provided by the embodiment of the present invention;

[0014] Figure 5 It is the internal structural schematic diagram of the water purifier provided by the embodiment of the present invention;

[0015] Figure 6 It is the exploded view of the filtration module and the heating module of the water purifier provided by the embodiment of the present invention;

[0016] Figure 7 It is Figure 6 The partial enlarged view at position E in;

[0017] Figure 8 It is the exploded view of the filtration module of the water purifier provided by the embodiment of the present invention;

[0018] Figure 9 It is Figure 8 The partial enlarged view at position F in;

[0019] Figure 10 It is the structural schematic diagram of the filtration water circuit board of the water purifier provided by the embodiment of the present invention;

[0020] Figure 11 It is the exploded view of the heating module of the water purifier provided by the embodiment of the present invention;

[0021] Figure 12 It is Figure 11 The partial enlarged view at position G in;

[0022] Figure 13 It is the structural schematic diagram of the heating system of the water purifier provided by the embodiment of the present invention;

[0023] Figure 14 An exploded view of the heating system of the water purifier provided by the embodiment of the present invention;

[0024] Figure 15 A schematic structural diagram of the heating system of the water purifier provided by the embodiment of the present invention when placed vertically;

[0025] Figure 16 A schematic structural diagram of the heating system of the water purifier provided by the embodiment of the present invention when placed horizontally;

[0026] Figure 17 A schematic structural diagram of the water outlet water circuit board of the water purifier provided by the embodiment of the present invention;

[0027] Figure 18 A schematic structural diagram of the water outlet water circuit board of the water purifier provided by the embodiment of the present invention from one perspective after installing a valve;

[0028] Figure 19 A schematic structural diagram of the water outlet water circuit board of the water purifier provided by the embodiment of the present invention from another perspective after installing a valve;

[0029] Figure 20 A schematic structural diagram of the water outlet water circuit board of the water purifier provided by the embodiment of the present invention from yet another perspective after installing a valve;

[0030] Figure 21 A schematic control logic diagram of the heating system and the exhaust valve of the water purifier provided by the embodiment of the present invention when the water purifier is not producing water;

[0031] Figure 22 A schematic control logic diagram of the heating system and the exhaust valve of the water purifier provided by the embodiment of the present invention when the water purifier is producing water.

[0032] Reference numerals:

[0033] Filtration system 100, raw water inlet 101, water pump inlet 102, water pump outlet 103, wastewater outlet 104, purified water outlet 105, filtration water circuit board 110, pipe body 111, support 112, connecting arm 113, first port 121a, second port 122a, third port 123a, fourth port 124a, fifth port 125a, sixth port 121b, seventh port 122b, eighth port 122c, ninth port 123b, tenth port 124b, eleventh port 124c, twelfth port 125b;

[0034] Heating system 200, tank body 210, bottom surface 211, first side surface 212, tank body 213, upper end cover 214, lower end cover 215, water inlet 221, water outlet 222, exhaust port 223, wiring terminal avoidance hole 224, temperature sensor mounting hole 225, water inlet pipe 226, water outlet pipe 227, exhaust pipe 228, tank body assembly bracket 229, heating element 230, wiring terminal 231, thermostat fixing bracket 250;

[0035] First bracket 310, connecting arm mounting hole 311, first flanging 312, pipe body avoidance hole 313, positioning column 314;

[0036] Second bracket 320, first connection structure 321, second flanging 322, installation cavity 323, sleeve 324, first plate 325, second plate 326, wire routing groove 327;

[0037] Protective cover 400, cover plate 410, second connection structure 411, notch 412, water baffle 420, main body section 421, avoidance section 422, water baffle rib 423, wire passing port 424, guiding rib 425;

[0038] Water pump 510, first branch 520, second branch 530, return water pipe 540, safety branch 550, clean water one-way valve 561, clean water control valve 562, return water one-way valve 563, return water control valve 564, exhaust one-way valve 565, exhaust valve 566, waste water valve 567, water pump inlet valve 568, leakage protection valve 569;

[0039] Raw water inlet 601, waste water outlet 602;

[0040] Machine shell 701, front shell 702, upper cover 703, top cover 704, base 705, decorative plate 706, power adapter 707, display 708, electric control box 709, power board 710, TDS detection probe 711, pressing rod 712;

[0041] Faucet 800;

[0042] Water outlet water circuit board 900, substrate 910, mounting structure 911, first water pipe 921, first inlet 921a, first outlet 921b, first interface 921c, second interface 921d, second water pipe 922, second inlet 922a, second outlet 922b, third water pipe 923, third inlet 923a, third outlet 923b, fourth water pipe 924, fourth inlet 924a, fourth outlet 924b, fifth water pipe 935, fifth inlet 935a, fifth outlet 935b, fifth interface 935c, sixth water pipe 936, sixth inlet 936a, sixth outlet 936b, seventh water pipe 947, seventh inlet 947a, seventh outlet 947b, eighth water pipe 958, eighth inlet 958a, eighth outlet 958b;

[0043] First direction A, second direction B, third direction C. Detailed implementation mode

[0044] The following further describes the implementation mode of the present invention in detail in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0045] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0046] In the description of the embodiments of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific situations.

[0047] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is less than that of the second feature.

[0048] In the description of this specification, the description with reference to terms such as "an embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0049] The following Figures 1 - 22 Describe the water purifier of the embodiments of the present invention. The water purifier disclosed in the embodiments of the present invention may be a household water purifier, such as an under-sink water purifier.

[0050] As Figures 1 - 6 shown, the water purifier of the first embodiment of the present invention includes: a filtration system 100, a heating system 200, and a water pump 510.

[0051] Among them, the filtration system 100 has a raw water inlet 101 and a purified water outlet 105. The raw water inlet 101 can be directly or indirectly connected to the raw water pipe. For example, the raw water pipe can be a tap water pipe. The raw water to be filtered flows into the filtration system 100 from the raw water inlet 101, and after filtration, purified water flows out from the purified water outlet 105.

[0052] The heating system 200 has a water inlet 221 and a water outlet 222. The water inlet 221 of the heating system 200 is connected to the purified water outlet 105 of the filtration system 100, and the water outlet 222 of the heating system 200 is connected to the first water supply port of the water purifier. The heating system 200 is used to heat the water flowing through the heating system 200.

[0053] The water pump 510 is connected to the filtration system 100, and the water pump 510 is arranged upstream of the purified water outlet 105 of the filtration system 100. The water pump 510 is used to drive water to flow from the raw water inlet 101 of the filtration system 100 to the purified water outlet 105 of the filtration system 100, and the water pump 510 is used to drive water to be discharged from the water outlet 222 of the heating system 200.

[0054] In other words, in one working mode of the water purifier, raw water flows into the filtration system 100 from the raw water inlet 101 of the filtration system 100, and under the drive of the water pump 510, after being filtered, pure water flows out from the purified water outlet 105 of the filtration system 100. The pure water flowing out from the purified water outlet 105 of the filtration system 100 flows into the heating system 200 from the water inlet 221 of the heating system 200. After being heated, under the drive of the water pump 510, it flows into the first water supply port of the water purifier from the water outlet 222 of the heating system 200, thereby realizing the supply of hot water.

[0055] As Figure 1 shown, the lower part of the heating system 200 is provided with a water inlet 221, and the upper part of the heating system 200 is provided with a water outlet 222. In other words, the pure water obtained through filtration flows into the heating system 200 from the lower part of the heating system 200 and is heated. When hot water needs to be taken, the hot water flows out from the water outlet 222 at the upper part of the heating system 200 under the action of the water pump 510.

[0056] It can be understood that after the pure water entering the heating system 200 is heated, the density of the hot water is relatively small and it floats, while the density of the cold water is relatively large and it sinks.

[0057] In addition to driving the raw water to flow from the raw water inlet 601 to the purified water outlet 105 to achieve filtration, the water pump 510 can also drive the hot water to be discharged from the water outlet 222 of the heating system 200.

[0058] In other words, the water pump 510 is both the driving pump of the filtration system 100 and the driving pump of the heating system 200. In the embodiment of the present invention, the hot water is not pumped out from the heating system 200 by designing an independent water pump, but a water pressure difference is formed between the water inlet 221 and the water outlet 222 of the heating system 200 by using the water pump 510 shared with the filtration system 100. The hot water at the upper part is pushed out to the first water supply port of the water purifier through the water pressure difference. In this way, the introduction of external air into the water circuit of the water purifier can be avoided, and secondary pollution can be prevented.

[0059] As Figure 1As shown, the return water pipe 540 is connected between the purified water outlet 105 and the inlet of the water pump 510. When the water purifier is just started and the water pump 510 is working, the purified water at the purified water outlet 105 can be sucked back into the water pump 510 through the return water pipe 540. Since the water pump 510 is arranged upstream of the purified water outlet 105 of the filtration system 100, the sucked purified water can enter the filtration system 100 again for at least one-stage filtration.

[0060] In other words, when the return water pipe 540 is connected, it can prevent the outflow of the first glass of water with insufficient quality, and is equivalent to enhancing the quality of the water introduced into the filtration system 100, so that the quality of the purified water at the purified water outlet 105 of the filtration system 100 is higher. Especially for the first glass of water, by setting the return water pipe 540, the quality of the first glass of water can be greatly improved.

[0061] The water purifier according to the embodiment of the present invention integrates the functions of purifying water and heating water. By setting the water inlet 221 at the lower part of the heating system 200, setting the water outlet 222 at the upper part of the heating system 200, and combining with the push-type water outlet mode of the water pump 510, it can avoid the introduction of external air into the water circuit of the water purifier and prevent secondary pollution. By setting the return water pipe 540, the quality of the first glass of water can be greatly improved.

[0062] In some embodiments, as Figure 1 shown, the return water pipe 540 is provided with a return water control valve 564. The return water control valve 564 is used to control the conduction state of the return water pipe 540. The return water control valve 564 can be an electromagnetic valve. The return water control valve 564 can be electrically connected to the controller of the water purifier. The water purifier is set to open the return water control valve 564 and keep it open for a preset time each time the water purifier is started. The preset time can be 5s - 25s, such as 10s.

[0063] In some embodiments, as Figure 1 shown, the return water pipe 540 is provided with a return water check valve 563 and a return water control valve 564. The return water check valve 563 conducts unidirectionally from the purified water outlet 105 to the inlet of the water pump 510. The return water control valve 564 is used to control the conduction state of the return water pipe 540. The return water control valve 564 can be an electromagnetic valve. The return water check valve 563 can prevent the water that has not been fully filtered from flowing directly into the purified water outlet 105 or the first water supply port through the return water pipe 540.

[0064] The water purifier has a return fresh water mode. In the return fresh water mode, the water pump 510 and the return water control valve 564 are opened. The water purifier is set to start the return fresh water mode each time the water purifier is powered on and keep it on for a preset time. The preset time can be 5s - 25s, such as 10s.

[0065] In some embodiments, as Figure 1As shown, the heating system 200 has an exhaust port 223. The water purifier further includes a safety branch 550, which is connected between the exhaust port 223 of the heating system 200 and the wastewater outlet 602 of the water purifier.

[0066] The safety branch 550 is used to relieve pressure through the exhaust port 223 and the safety branch 550 when the pressure in the heating system 200 is too high, and the steam or water discharged during pressure relief can be discharged through the wastewater outlet 602 of the water purifier.

[0067] As Figure 1 shown, the safety branch 550 may be provided with an exhaust check valve 565 and an exhaust valve 566. The exhaust check valve 565 conducts unidirectionally from the exhaust port 223 of the heating system 200 to the wastewater outlet 602. The exhaust valve 566 is used to control the conduction state of the safety branch 550. The exhaust valve 566 may be a solenoid valve, and the exhaust valve 566 may be electrically connected to the controller of the water purifier, or the exhaust valve 566 may be a pressure valve. The exhaust check valve 565 can prevent wastewater from flowing back into the heating system 200.

[0068] When hot water is needed, the exhaust valve 566 is closed. At this time, the heating system 200 is in a closed state, and the water pressure of the water pump 510 can push the hot water out of the water outlet 222 from bottom to top.

[0069] When exhaust pressure relief or discharging stale water is needed, the exhaust valve 566 is opened, and the water pressure of the water pump 510 can push the hot water out of the drain port from bottom to top.

[0070] As Figures 1 - 6 shown, the water purifier according to the second embodiment of the present invention includes a filtration system 100, a heating system 200, and a water pump 510.

[0071] Among them, the filtration system 100 has a raw water inlet 101 and a purified water outlet 105. The raw water inlet 101 can be directly or indirectly connected to a raw water water pipe. For example, the raw water water pipe can be a tap water pipe. The raw water to be filtered flows into the filtration system 100 from the raw water inlet 101, and the purified water flows out from the purified water outlet 105 after filtration.

[0072] The heating system 200 has a water inlet 221, a water outlet 222, and an exhaust port 223. The water inlet 221 of the heating system 200 is connected to the purified water outlet 105 of the filtration system 100, and the water outlet 222 of the heating system 200 is connected to the first water supply port of the water purifier.

[0073] An exhaust valve 566 is connected to the exhaust port 223 of the heating system 200.

[0074] When hot water is needed, the exhaust valve 566 is closed. At this time, the heating system 200 is in a closed state, and the water pressure of the water pump 510 can push the hot water out of the water outlet 222 from bottom to top. The exhaust valve 566 can prevent external air from entering the heating system 200 and causing secondary pollution.

[0075] When exhaust pressure relief or draining of stale water is needed, the exhaust valve 566 is opened, and the water pressure of the water pump 510 can push the hot water out of the drain port from bottom to top.

[0076] The setting position of the exhaust port 223 of the heating system 200 is higher than the water outlet 222 of the heating system 200.

[0077] In this way, the pressure at the exhaust port 223 is less than the pressure at the water outlet 222, which can prevent the exhaust valve 566 from opening by mistake. Moreover, steam accumulates at the top of the heating system 200. Setting the water outlet 222 at a position lower than the exhaust port 223 can prevent steam from being discharged from the water outlet 222 and splashing the user. Setting the exhaust port 223 at the top is conducive to exhaust.

[0078] The water pump 510 is connected to the filtration system 100, and the water pump 510 is arranged upstream of the clean water outlet 105 of the filtration system 100. The water pump 510 is used to drive water to flow from the raw water inlet 101 of the filtration system 100 to the clean water outlet 105 of the filtration system 100, and the water pump 510 is used to drive water to be discharged from the water outlet 222 of the heating system 200.

[0079] In other words, in one working mode of the water purifier, raw water flows into the filtration system 100 from the raw water inlet 101 of the filtration system 100, and under the drive of the water pump 510, after filtration, pure water flows out from the clean water outlet 105 of the filtration system 100. The pure water flowing out from the clean water outlet 105 of the filtration system 100 flows into the heating system 200 from the water inlet 221 of the heating system 200. After being heated, under the drive of the water pump 510, it flows into the first water supply port of the water purifier from the water outlet 222 of the heating system 200, thus realizing the supply of hot water.

[0080] As Figure 1 shown, the lower part of the heating system 200 is provided with a water inlet 221, and the upper part of the heating system 200 is provided with a water outlet 222. In other words, the pure water obtained through filtration flows into the heating system 200 from the lower part of the heating system 200 and is heated. When hot water needs to be taken, the hot water flows out from the water outlet 222 at the upper part of the heating system 200 under the action of the water pump 510.

[0081] It can be understood that after the pure water entering the heating system 200 is heated, the density of the hot water is relatively small and it floats, while the density of the cold water is relatively large and it sinks.

[0082] In addition to driving raw water to flow from the raw water inlet 601 to the purified water outlet 105 for filtration, the water pump 510 can also drive hot water to be discharged from the water outlet 222 of the heating system 200.

[0083] In other words, the water pump 510 is both the driving pump of the filtration system 100 and the driving pump of the heating system 200. In the embodiment of the present invention, the hot water is not pumped out of the heating system 200 by designing an independent water pump, but a water pressure difference is formed between the water inlet 221 and the water outlet 222 of the heating system 200 by the water pump 510 shared with the filtration system 100, and the hot water in the upper part is pushed out to the first water supply port of the water purifier through the water pressure difference. In this way, the introduction of external air into the water path of the water purifier can be avoided, and secondary pollution can be prevented.

[0084] The water purifier according to the embodiment of the present invention integrates the functions of water purification and heating. By arranging the water inlet 221 at the lower part of the heating system 200, the water outlet 222 at the upper part of the heating system 200, and an exhaust port 223 with a drain valve at a higher position, a closed heating system 200 can be formed, and combined with the push-type water outlet mode of the water pump 510, the introduction of external air into the water path of the water purifier can be avoided, and secondary pollution can be prevented.

[0085] In some embodiments, as Figure 1 shown, the water purifier according to the embodiment of the present invention may include an exhaust check valve 565, and the exhaust check valve 565 conducts unidirectionally from the exhaust port 223 of the heating system 200 to the wastewater outlet 602 of the water purifier. The exhaust check valve 565 can prevent the wastewater from flowing back into the heating system 200.

[0086] The exhaust check valve 565 can be arranged between the exhaust valve 566 and the exhaust port 223, or the exhaust valve 566 can be arranged between the exhaust check valve 565 and the exhaust port 223.

[0087] In some embodiments, as Figure 1 shown, the water purifier may further include: a return pipe 540, and the return pipe 540 is connected between the purified water outlet 105 and the inlet of the water pump 510.

[0088] When the water purifier is just started and the water pump 510 is working, the purified water at the purified water outlet 105 can be sucked back into the water pump 510 through the return pipe 540. Since the water pump 510 is arranged upstream of the purified water outlet 105 of the filtration system 100, the sucked purified water can enter the filtration system 100 again for at least one-stage filtration.

[0089] In other words, when the return water pipe 540 is connected, it can prevent the outflow of the first cup of water with insufficient quality, and is equivalent to enhancing the quality of the water introduced into the filtration system 100, so that the quality of the purified water at the purified water outlet 105 of the filtration system 100 is higher. Especially for the first cup of water, by setting the return water pipe 540, the quality of the first cup of water can be greatly improved.

[0090] In some embodiments, as Figure 1 shown, the return water pipe 540 is connected to a position near the second water supply port of the water purifier. For example, in Figure 17 the water outlet waterway board 900 shown, the second interface 921d of the first water pipe 921 is arranged at a position near the first outlet 921b of the first water pipe 921. In this way, in the return fresh water mode, the purified water remaining in the pipeline can be pumped into the inlet of the water pump 510 as much as possible.

[0091] In some embodiments, as Figure 1 shown, the return water pipe 540 is provided with a return water control valve 564. The return water control valve 564 is used to control the conduction state of the return water pipe 540. The return water control valve 564 can be a solenoid valve. The return water control valve 564 can be electrically connected to the controller of the water purifier. The water purifier is set to open the return water control valve 564 and last for a preset time each time the water purifier is turned on. The preset time can be 5s - 25s, such as 10s.

[0092] In some embodiments, as Figure 1 shown, the return water pipe 540 is provided with a return water check valve 563 and a return water control valve 564. The return water check valve 563 conducts unidirectionally from the purified water outlet 105 to the inlet of the water pump 510. The return water control valve 564 is used to control the conduction state of the return water pipe 540. The return water control valve 564 can be a solenoid valve. The return water check valve 563 can prevent the water that has not been fully filtered from flowing directly into the purified water outlet 105 or the first water supply port through the return water pipe 540.

[0093] The water purifier has a return fresh water mode. In the return fresh water mode, the water pump 510 and the return water control valve 564 are turned on. The water purifier is set to start the return fresh water mode each time the water purifier is powered on and last for a preset time. The preset time can be 5s - 25s, such as 10s.

[0094] As Figures 1 - 12 shown, the water purifier according to the third embodiment of the present invention includes: a first bracket 310, a filtration system 100, a second bracket 320, and a heating system 200.

[0095] The filtration system 100 is installed on the first bracket 310. The first bracket 310 defines an installation space for installing the filtration system 100, and the first bracket 310 provides a support framework for the filtration system 100.

[0096] Among them, the filtration system 100 has a raw water inlet 101 and a purified water outlet 105. The raw water inlet 101 can be directly or indirectly connected to a raw water pipe. For example, the raw water pipe can be a tap water pipe. The raw water to be filtered flows into the filtration system 100 from the raw water inlet 101, and after filtration, purified water flows out from the purified water outlet 105.

[0097] The heating system 200 is installed on the second bracket 320. The second bracket 320 defines an installation space for installing the heating system 200, and the second bracket 320 provides a support framework for the heating system 200.

[0098] The heating system 200 has a water inlet 221 and a water outlet 222. The water inlet 221 of the heating system 200 is connected to the purified water outlet 105 of the filtration system 100, and the water outlet 222 of the heating system 200 is connected to the first water supply port of the water purifier.

[0099] The second bracket 320 is detachably connected to the first bracket 310. For example, the second bracket 320 and the first bracket 310 can be connected by a threaded connector, or by a snap connection structure, or by a magnetic attraction structure, etc.

[0100] In this way, the structural design of the water purifier is simple, and it can enable multiple different types of water purifiers to share the first bracket 310 and the filtration system 100. For example, for different types of water purifiers, only the second bracket 320 and the corresponding heating system 200 need to be redesigned; even multiple different types of water purifiers can share the first bracket 310, the filtration system 100 and the second bracket 320. For example, for different types of water purifiers, only the corresponding heating system 200 needs to be redesigned.

[0101] In the related art, when designing a multifunctional water purifier, it is necessary to redesign the overall bracket for each type of multifunctional water purifier. For example, for a water purifier with a heating function and a water purifier with a function of brewing tea, it is necessary to rearrange the structure and design the brackets respectively, resulting in a long development cycle and a high mold investment cost for the two product lines.

[0102] Since the water purifier according to the embodiment of the present invention separately designs the respective brackets for the filtration system 100 and the heating system 200, when facing different types of water purifiers, the design related to the filtration system 100 can be retained to the greatest extent, realizing the sharing of modules.

[0103] For the water purifier according to the embodiment of the present invention, by separately designing the detachable brackets for the filtration system 100 and the heating system 200, the development cost can be reduced and the development cycle can be shortened.

[0104] In some embodiments, such as Figure 6 、 Figure 7 、 Figure 8 andFigure 11 As shown, one of the second bracket 320 and the first bracket 310 is provided with a sleeve 324, and the other of the second bracket 320 and the first bracket 310 is provided with a positioning post 314, and the positioning post 314 extends into the sleeve 324.

[0105] The axial directions of the sleeve 324 and the positioning post 314 are the direction A in the figure. When aligning the first bracket 310 and the second bracket 320, the sleeve 324 and the positioning post 314 are facing each other. Inserting the positioning post 314 into the sleeve 324 can achieve the positioning and assembly of the first bracket 310 and the second bracket 320.

[0106] There are multiple sleeves 324 and positioning posts 314 that correspond to each other one by one, and the multiple sleeves 324 and the multiple positioning posts 314 are distributed at the top corners and the middle regions of the second bracket 320 and the first bracket 310. For example, Figure 6 、 Figure 7 、 Figure 8 and Figure 11 In the embodiment shown, five positioning posts 314 are distributed at the four top corners of the first bracket 310 and the middle edge in the direction B, and five sleeves 324 are distributed at the four top corners of the second bracket 320 and the middle edge in the direction B. In this way, the positioning of the first bracket 310 and the second bracket 320 at each place is accurate, and relative deviation is not likely to occur.

[0107] The first bracket 310 and the second bracket 320 can be connected by a threaded connector. The positioning post 314 can have an internal threaded hole. As Figure 5 shown, after the positioning post 314 is inserted into the sleeve 324, by screwing a screw into the internal threaded hole, the fixed connection between the first bracket 310 and the second bracket 320 can be achieved.

[0108] As Figures 1 - 6 shown, the water purifier according to the fourth embodiment of the present invention includes: a filtration system 100, a heating system 200, a water pump 510, and a housing.

[0109] Among them, the filtration system 100 has a raw water inlet 101 and a purified water outlet 105. The raw water inlet 101 can be directly or indirectly connected to a raw water water pipe. For example, the raw water water pipe can be a tap water pipe. The raw water to be filtered flows into the filtration system 100 from the raw water inlet 101, and after being filtered, pure water flows out from the purified water outlet 105.

[0110] The heating system 200 has a water inlet 221 and a water outlet 222. The water inlet 221 of the heating system 200 is connected to the purified water outlet 105 of the filtration system 100, and the water outlet 222 of the heating system 200 is connected to the first water supply port of the water purifier. The heating system 200 is used to heat the water flowing through the heating system 200.

[0111] The water pump 510 is connected to the filtration system 100, and the water pump 510 is disposed upstream of the purified water outlet 105 of the filtration system 100. The water pump 510 is used to drive water to flow from the raw water inlet 101 of the filtration system 100 to the purified water outlet 105 of the filtration system 100, and the water pump 510 is used to drive water to be discharged from the water outlet 222 of the heating system 200.

[0112] In other words, in one working mode of the water purifier, raw water flows into the filtration system 100 from the raw water inlet 101 of the filtration system 100, and under the drive of the water pump 510, after being filtered, pure water flows out from the purified water outlet 105 of the filtration system 100. The pure water flowing out from the purified water outlet 105 of the filtration system 100 flows into the heating system 200 from the water inlet 221 of the heating system 200. After being heated, under the drive of the water pump 510, it flows into the first water supply port of the water purifier from the water outlet 222 of the heating system 200, thereby realizing the supply of hot water.

[0113] As Figure 1 shown, in some embodiments, the lower part of the heating system 200 is provided with a water inlet 221, and the upper part of the heating system 200 is provided with a water outlet 222. In other words, the purified water obtained through filtration flows into the heating system 200 from the lower part of the heating system 200 and is heated. When hot water needs to be taken, the hot water flows out from the water outlet 222 at the upper part of the heating system 200 under the action of the water pump 510.

[0114] It can be understood that after the purified water entering the heating system 200 is heated, the density of the hot water is relatively small and it floats, while the density of the cold water is relatively large and it sinks.

[0115] In addition to being used to drive raw water to flow from the raw water inlet 601 to the purified water outlet 105 to achieve filtration, the water pump 510 can also drive hot water to be discharged from the water outlet 222 of the heating system 200.

[0116] In other words, the water pump 510 is both the drive pump of the filtration system 100 and the drive pump of the heating system 200. In the embodiment of the present invention, the hot water is not pumped out from the heating system 200 by designing an independent water pump, but a water pressure difference is formed between the water inlet 221 and the water outlet 222 of the heating system 200 by the water pump 510 shared with the filtration system 100, and the hot water at the upper part is pushed out to the first water supply port of the water purifier through the water pressure difference. In this way, the introduction of external air into the water path of the water purifier can be avoided, and secondary pollution can be prevented.

[0117] As Figure 2 and Figure 3 shown, the filtration system 100, the water pump 510 and the heating system 200 are disposed in the housing, and the housing defines a receiving space for installing the filtration system 100, the water pump 510 and the heating system 200.

[0118] As Figure 2 and Figure 3 shown, the housing can be cuboid-shaped. The length direction of the housing can be the first direction, i.e., direction A in the figure; the height direction of the housing can be the second direction, i.e., direction B in the figure; the width direction of the housing can be the third direction, i.e., direction C in the figure. The first direction, the second direction, and the third direction are perpendicular to each other pairwise.

[0119] As Figures 4 - 6 shown, the filtration system 100, the water pump 510, and the heating system 200 are arranged side by side along the first direction of the housing. The length direction of the filtration system 100, the water pump 510, and the heating system 200 is along the second direction of the housing.

[0120] In this way, the filtration system 100, the water pump 510, and the heating system 200 are arranged compactly with high space utilization rate, making the water purifier occupy a small space and being convenient to be arranged in a small space, such as in a cabinet.

[0121] The water purifier according to the embodiment of the present invention integrates the functions of water purification and heating. Through the push-type water outlet mode of the water pump 510, it can avoid the introduction of external air into the water path of the water purifier and prevent secondary pollution. Through the parallel arrangement mode of the filtration system 100, the water pump 510, and the heating system 200, the arrangement is compact and the space utilization rate is high.

[0122] In some embodiments, as Figure 5 and Figure 6 shown, the water pump 510 is arranged between the filtration system 100 and the heating system 200.

[0123] It can be understood that in this embodiment, for the relatively expensive water pump 510, both the filtration system 100 and the heating system 200 can play a protective role for the water pump 510. And the water pump 510 is located between the filtration system 100 and the heating system 200, which is equivalent to being located in the middle area of the whole water purifier. Utilizing the blocking effect of other peripheral structures, the noise generated by the operation of the water pump 510 can be effectively isolated.

[0124] In some embodiments, as Figure 6 and Figure 8 shown, the water purifier further includes: a filtration water path board 110. Each water port of the filtration system 100 and the water pump 510 is connected to the filtration water path board 110. The water pump 510 is connected to the filtration system 100 through the filtration water path board 110. The filtration system 100 is connected to the heating system 200 and the external water path through the filtration water path board 110. In this way, there is no need to set too many pipelines on the side of the filtration system 100, which is convenient for pipeline arrangement.

[0125] The filter water circuit board 110 is located between the filter system 100 and the heating system 200. In this way, the filter system 100 and the heating system 200 can fully protect the filter water circuit board 110 to prevent the filter water circuit board 110 from being damaged by impact and causing water leakage.

[0126] In some embodiments, as Figure 6 and Figure 8 shown, the filter water circuit board 110 and the water pump 510 are arranged side by side in the second direction, and the filter water circuit board 110 is installed at one end of the water pump 510 in the length direction. The filter water circuit board 110 and the water pump 510 are arranged along direction B. In this way, the space between the filter system 100 and the heating system 200 is fully utilized, and the structure of the whole water purifier is compact.

[0127] In some embodiments, as Figure 8 shown, the water inlets of the filter system 100 are arranged side by side along the third direction of the housing, and the water inlets of the filter system 100 and the filter water circuit board 110 are arranged opposite to each other in the second direction. In this way, when assembling, by docking the water inlets of the filter system 100 and the filter water circuit board 110 in the second direction, the assembly of the filter system 100 and the filter water circuit board 110 can be realized. The assembly is simple and not easy to make mistakes.

[0128] In some embodiments, as Figure 2 shown, one end of the housing in the second direction is provided with an opening, which is arranged opposite to the filter system 100, and this opening is used to disassemble the filter system 100. During actual use, by disassembling the pressure lever 712, the filter element of the filter system 100 can be removed from this opening, so as to facilitate the replacement of the filter element.

[0129] In some embodiments, as Figure 6 and Figure 11 shown, the water purifier may further include: an outlet water circuit board 900, and each water inlet of the heating system 200 is connected to the outlet water circuit board 900, and the outlet water circuit board 900 and the heating system 200 are arranged opposite to each other in the second direction.

[0130] In this way, during assembly, the setting of pipelines can be reduced, and arranging the outlet water circuit board 900 and the heating system 200 opposite to each other in the second direction can save space.

[0131] As Figures 1 - 6 shown, the water purifier according to the fifth embodiment of the present invention includes: a filter module and a heating module.

[0132] Among them, the filter module has a raw water inlet 101 and a purified water outlet 105. The raw water inlet 101 can be directly or indirectly connected to a raw water water pipe. For example, the raw water water pipe can be a tap water pipe. The raw water to be filtered flows into the filter system 100 from the raw water inlet 101, and the purified water flows out from the purified water outlet 105 after being filtered.

[0133] As shown Figure 11 in the figure, the heating module includes: a second bracket 320, a heating system 200, and a protective cover 400.

[0134] Among them, the second bracket 320 defines an installation cavity 323 with an open end, and the heating system 200 is installed in the installation cavity 323. For example, the installation cavity 323 can be cuboid-shaped, and one surface of the installation cavity 323 is open to facilitate the installation of the heating system 200 into the installation cavity 323.

[0135] The wiring terminal 231 of the heating system 200 faces the open end. The protective cover 400 is connected to the second bracket 320, and the protective cover 400 covers the open end. The protective cover 400 can be made of a flame-retardant material, such as nylon + glass fiber or 5VA grade ABS (ternary copolymer of three monomers: acrylonitrile (A), butadiene (B), and styrene (S)), etc.

[0136] It should be noted that the heating system 200 is an electric heating type, and the wiring terminal 231 of the heating system 200 is a heat risk aggregation area of the heating system 200. By designing the heating module with the above structural form, when the heating system 200 catches fire, it can prevent the fire from spreading outward, improve product reliability, and reduce the fire risk.

[0137] As shown Figure 11 and Figure 12 in the figure, the protective cover 400 includes a cover plate 410 and a water baffle 420. The water baffle 420 protrudes towards the installation cavity 323, and the water baffle 420 extends into the installation cavity 323. The water baffle 420 is used to prevent external water from flowing into the installation cavity 323. For example, when a pipeline bursts, the water baffle 420 can prevent water from directly flowing into the installation cavity 323 and prevent the wiring terminal 231 of the heating system 200 from short-circuiting.

[0138] The second bracket 320 is provided with a first connection structure 321, and the cover plate 410 is provided with a second connection structure 411. The second connection structure 411 is connected to the first connection structure 321 so that the cover plate 410 covers the open end, and the second connection structure 411 is arranged outside the water baffle 420.

[0139] Since the connection structure is arranged outside the water baffle 420, it can prevent water from seeping into the installation cavity 323 from the connection structure.

[0140] According to the heating module of the embodiment of the present invention, by arranging the protective cover 400 on the side of the wiring terminal 231 of the heating system 200, when the heating system 200 catches fire, it can prevent the fire from spreading outward. By arranging the water baffle 420 and arranging the connection structure outside the water baffle 420, it can prevent water from seeping into the installation cavity 323 from the connection part, and the product has high reliability and is not easy to catch fire.

[0141] The second bracket 320 is connected to the filtration module. The heating system 200 has a water inlet 221 and a water outlet 222. The water inlet 221 of the heating system 200 is connected to the purified water outlet 105 of the filtration module, and the water outlet 222 of the heating system 200 is connected to the first water supply port of the water purifier. The heating system 200 is used to heat the water flowing through the heating system 200.

[0142] The water purifier according to the embodiment of the present invention integrates the functions of water purification and heating, and is provided with structures such as a protective cover 400 and a water baffle 420, which can effectively reduce the short - circuit risk of the water purifier and improve the thermal protection performance.

[0143] In some embodiments, as Figure 9 shown, the filtration module may include a first bracket 310 and a filtration system 100. The filtration system 100 is installed on the first bracket 310. The filtration system 100 has a raw water inlet 101 and a purified water outlet 105. The raw water inlet 101 can be directly or indirectly connected to a raw water pipe. For example, the raw water pipe can be a tap water pipe. The raw water to be filtered flows into the filtration system 100 from the raw water inlet 101, and the purified water flows out from the purified water outlet 105 after filtration.

[0144] The second bracket 320 is detachably connected to the first bracket 310.

[0145] That is to say, for the water purifier according to the embodiment of the present invention, separate brackets are designed for the filtration system 100 and the heating system 200. In this way, when facing water purifiers of different heating models, the design related to the filtration system 100 can be retained to the greatest extent, realizing the sharing of modules, which can reduce the development cost and shorten the development cycle.

[0146] Next, the heating module of the embodiment of the present invention will be further described.

[0147] In some embodiments, as Figure 11 shown, the open end of the second bracket 320 is provided with a protruding first plate 325 and a second plate 326. The water baffle 420 is located inside the first plate 325, and the second plate 326 is located outside the first plate 325. A wire groove 327 is defined between the first plate 325 and the second plate 326, and the cover plate 410 covers the wire groove 327.

[0148] It can be understood that the first plate 325 is used to cooperate with the water baffle 420. The second plate 326 is located outside the first plate 325 and is spaced apart from the first plate 325 to form a wire groove 327 between the second plate 326 and the first plate 325. After the cable led out from the heating system 200 exits the installation cavity 323, it can be arranged along the wire groove 327, and the cover plate 410 extends outwards relative to the water baffle 420 by a section to cover the wire groove 327, making the structure of the heating module neater.

[0149] In some embodiments, as Figure 12 shown, the outer side surface of the water baffle 420 is provided with protruding guiding ribs 425, and the guiding ribs 425 extend in a direction away from the cover plate 410 and the height gradually decreases.

[0150] From the direction close to the cover plate 410 to the direction away from the cover plate 410, the height of the guiding ribs 425 gradually decreases. In this way, when the protective cover 400 is installed on the second bracket 320, the guiding ribs 425 are gradually squeezed, so that an interference fit structure is formed between the protective cover 400 and the second bracket 320. The gradually changing height of the guiding ribs 425 is beneficial to assembly.

[0151] The water baffle 420 can be a quadrilateral enclosing structure (each side can be designed with a notch or cut according to needs), and guiding ribs 425 can be provided on each side, and multiple guiding ribs 425 can be provided on some sides.

[0152] In some embodiments, as Figure 12 shown, at least one section of the water baffle 420 includes a main body section 421 and an avoidance section 422. The avoidance section 422 is recessed towards the middle of the protective cover 400 relative to the main body section 421. The main body section 421 and the avoidance section 422 are connected by a connecting plate, and the second connecting structure 411 is disposed opposite to the avoidance section 422.

[0153] It should be noted that the provided avoidance section 422 recessed towards the middle can form a groove on the circumferential outer side of the water baffle 420, and this groove can be used to accommodate the second connecting structure 411. In this way, when the volume of the accommodation cavity of the second bracket 320 is certain, since the installation space of the second connecting structure 411 outside the water baffle 420 does not need to be considered, the protective cover 400 can be made as small as possible, and the structure of the entire heating module is more compact.

[0154] In some embodiments, as Figure 12 shown, the outer side surface of the main body section 421 is provided with protruding water blocking ribs 423. The water blocking ribs 423 are used to further prevent water from flowing into the installation cavity 323 from the main body section 421.

[0155] As Figure 12 shown, the main body section 421 is provided with a wire passing opening 424, and a part of the water blocking ribs 423 extends along the edge of the wire passing opening 424. The wire passing opening 424 can be provided at one end of the main body section 421 away from the cover plate 410 and is in the form of a notch structure. The wire passing opening 424 is used to lead out the cable of the heating system 200.

[0156] In some embodiments, as Figure 12As shown, the outer side surface of the main body section 421 is provided with protruding guiding ribs 425. The guiding ribs 425 extend in a direction away from the cover plate 410 and the height gradually decreases. Both ends of the water blocking rib 423 are respectively connected to two spaced-apart guiding ribs 425.

[0157] From the direction close to the cover plate 410 to the direction away from the cover plate 410, the height of the guiding rib 425 gradually decreases. In this way, when the protective cover 400 is installed on the second bracket 320, the guiding rib 425 is gradually compressed, so that the protective cover 400 and the second bracket 320 form an interference fit structure. The gradually changing height of the guiding rib 425 is conducive to assembly.

[0158] In some embodiments, as Figure 12 shown, the second connection structure 411 is a buckle. Correspondingly, the first connection structure 321 includes a bayonet, and the buckle can extend into the bayonet to form a snap connection.

[0159] As Figure 12 shown, a notch 412 is provided between the second connection structure 411 and the connecting plate, and a reinforcing rib is provided on the side of the second connection structure 411 away from the connecting plate. In this way, the second connection structure 411 has good elasticity and sufficient strength and is not easily broken.

[0160] Of course, the first connection structure 321 and the second connection structure 411 can be threaded connectors, which will not be elaborated here.

[0161] In some embodiments, the five walls of the installation cavity 323 surround the heating system 200, which can play a certain heat preservation role. The second bracket 320 can be made of fireproof and heat-insulating materials, such as nylon + glass fiber or 5VA grade ABS (ternary copolymer of three monomers: acrylonitrile (A), butadiene (B), and styrene (S)), etc.

[0162] As Figure 1 、 Figures 13 - 16 shown, the water purifier according to the sixth embodiment of the present invention includes: a filtration system 100 and a heating system 200.

[0163] Among them, the filtration system 100 has a raw water inlet 101 and a purified water outlet 105. The raw water inlet 101 can be directly or indirectly connected to a raw water water pipe. For example, the raw water water pipe can be a tap water pipe. The raw water to be filtered flows into the filtration system 100 from the raw water inlet 101, and pure water flows out from the purified water outlet 105 after filtration.

[0164] The heating system 200 has a water inlet 221 and a water outlet 222. The water inlet 221 of the heating system 200 is connected to the purified water outlet 105 of the filtration system 100, and the water outlet 222 of the heating system 200 is connected to the first water supply port of the water purifier. The heating system 200 is used to heat the water flowing through the heating system 200.

[0165] The following will refer to Figures 13 - 16 describe the heating system 200 according to an embodiment of the present invention.

[0166] As Figure 14 shown, the heating system 200 according to an embodiment of the present invention includes: a tank body 210 and a heating element 230.

[0167] Among them, the heating element 230 is installed in the tank body 210. The heating element 230 can be electrically heated. The heating element 230 can be a tube body, such as a serpentine tube, a spiral tube, etc. When the heating element 230 is powered on, it can heat the water in the tank body 210.

[0168] As Figure 15 shown, the tank body 210 has a bottom surface 211 and a first side surface 212. The bottom surface 211 and the first side surface 212 are adjacent. When the heating system 200 is placed vertically, the bottom surface 211 of the tank body 210 faces downward. As Figure 16 shown, when the heating system 200 is placed horizontally, the first side surface 212 of the tank body 210 faces downward.

[0169] The tank body 210 has a water inlet 221 and a water outlet 222. The distance from the water outlet 222 to the bottom surface 211 is greater than the distance from the water inlet 221 to the bottom surface 211. The distance from the water outlet 222 to the first side surface 212 is greater than the distance from the water inlet 221 to the first side surface 212. The first side surface 212 is adjacent to the bottom surface 211.

[0170] In this way, when placed vertically, the water outlet 222 is located above the water inlet 221. When placed horizontally, the water outlet 222 is still located above the water inlet 221.

[0171] It can be understood that after the water entering the heating system 200 is heated, the density of the hot water is relatively small and it floats, while the density of the cold water is relatively large and it sinks.

[0172] In other words, the heating system 200 according to an embodiment of the present invention can ensure that the outlet water temperature is high enough whether it is placed vertically or horizontally. In this way, the heating system 200 can select a suitable placement direction according to the specific installation environment, and has a wider application range.

[0173] According to the heating system 200 of the embodiment of the present invention, by designing the distances from the water inlet and outlet to the bottom surface 211 and the first side surface 212, the heating system 200 can ensure the outlet water temperature whether it is placed vertically or horizontally, and has a wider application range.

[0174] Figure 2 It is a schematic structural diagram of the water purifier according to an embodiment of the present invention when placed vertically. Figure 3This is a schematic structural diagram of the water purifier in a horizontal placement according to an embodiment of the present invention. Since the water purifier adopts the heating system 200 of the above embodiment, the installation direction can be selected according to the actual installation environment. Especially when installing the water purifier in a narrow space under the cabinet, the adaptability is stronger.

[0175] The water purifier according to an embodiment of the present invention integrates the functions of water purification and heating, and can be installed vertically or horizontally according to the actual installation environment, without affecting the outlet water temperature.

[0176] In some embodiments, as Figure 1 shown, the water purifier may further include a water pump 510. The water pump 510 is connected to the filtration system 100, and the water pump 510 is arranged upstream of the purified water outlet 105 of the filtration system 100. The water pump 510 is used to drive water to flow from the raw water inlet 101 of the filtration system 100 to the purified water outlet 105 of the filtration system 100, and the water pump 510 is used to drive water to be discharged from the water outlet 222 of the heating system 200.

[0177] In other words, in one working mode of the water purifier, raw water flows into the filtration system 100 from the raw water inlet 101 of the filtration system 100, and under the drive of the water pump 510, after filtration, pure water flows out from the purified water outlet 105 of the filtration system 100. The pure water flowing out from the purified water outlet 105 of the filtration system 100 flows into the heating system 200 from the water inlet 221 of the heating system 200. After being heated, under the drive of the water pump 510, it flows into the first water supply port of the water purifier from the water outlet 222 of the heating system 200, thereby realizing the supply of hot water.

[0178] As Figure 1 shown, the lower part of the heating system 200 is provided with a water inlet 221, and the upper part of the heating system 200 is provided with a water outlet 222. In other words, the pure water obtained through filtration flows into the heating system 200 from the lower part of the heating system 200 and is heated. When hot water needs to be taken, the hot water flows out from the water outlet 222 at the upper part of the heating system 200 under the action of the water pump 510.

[0179] It can be understood that after the pure water entering the heating system 200 is heated, the density of the hot water is relatively small and it floats, while the density of the cold water is relatively large and it sinks.

[0180] In addition to driving the raw water to flow from the raw water inlet 601 to the purified water outlet 105 to achieve filtration, the water pump 510 can also drive the hot water to be discharged from the water outlet 222 of the heating system 200.

[0181] In other words, the water pump 510 is both the driving pump of the filtration system 100 and the driving pump of the heating system 200. In the embodiment of the present invention, the hot water is not pumped out of the heating system 200 by designing an independent water pump, but a water pressure difference is formed between the water inlet 221 and the water outlet 222 of the heating system 200 by the water pump 510 shared with the filtration system 100, and the hot water in the upper part is pushed out to the first water supply port of the water purifier through the water pressure difference. In this way, the introduction of external air into the water path of the water purifier can be avoided, and secondary pollution can be prevented.

[0182] As Figure 1 shown, the return pipe 540 is connected between the purified water outlet 105 and the inlet of the water pump 510. When the water purifier is just started and the water pump 510 is working, the purified water at the purified water outlet 105 can be sucked back into the water pump 510 through the return pipe 540. Since the water pump 510 is arranged upstream of the purified water outlet 105 of the filtration system 100, the sucked purified water can enter the filtration system 100 again for at least one-stage filtration.

[0183] In other words, when the return pipe 540 is connected, the outflow of the first glass of water with insufficient quality can be prevented, and it is equivalent to enhancing the quality of the water introduced into the filtration system 100, so that the quality of the purified water at the purified water outlet 105 of the filtration system 100 is higher. Especially for the first glass of water, by setting the return pipe 540, the quality of the first glass of water can be greatly improved.

[0184] The water purifier according to the embodiment of the present invention integrates the functions of water purification and heating. By arranging the water inlet 221 at the lower part of the heating system 200, arranging the water outlet 222 at the upper part of the heating system 200, and combining the push-type water outlet mode of the water pump 510, the introduction of external air into the water path of the water purifier can be avoided, and secondary pollution can be prevented. By setting the return pipe 540, the quality of the first glass of water can be greatly improved.

[0185] Next, the heating system 200 of the embodiment of the present invention will be further described.

[0186] In some embodiments, as Figure 14 shown, the water inlet 221 and the water outlet 222 can be respectively arranged at the diagonal positions on the front surface of the heating system, and the front surface is adjacent to the first side surface 212 and the bottom surface 211. In this way, the water inlet 221 is close to the bottom surface 211, the water outlet 222 is close to the top surface, and after the water flows into the tank body 210 from the water inlet 221, it can be fully heated, and the temperature of the water flowing out from the water outlet 222 is high enough and is not easily affected by the water flow at the water inlet 221.

[0187] Of course, the water inlet 221 and the water outlet 222 can also be arranged at other positions. For example, the water inlet 221 can be arranged at the lower left corner of the front surface, and the water outlet 222 can be arranged at one of the top corners of the top surface, and this top corner is close to the upper right corner of the front surface.

[0188] In some embodiments, as Figures 13 - 16 shown, the heating system 200 includes a water inlet pipe 226 and a water outlet pipe 227. The water inlet pipe 226 is inserted into the water inlet 221, and a part of the water inlet pipe 226 protrudes outside the tank body 210, facilitating connection with other pipelines. The water outlet pipe 227 is inserted into the water outlet 222, and a part of the water outlet pipe 227 protrudes outside the tank body 210, facilitating connection with other pipelines.

[0189] In some embodiments, as Figure 14 shown, the tank body 210 has an exhaust port 223. The distance from the exhaust port 223 to the bottom surface 211 is greater than the distance from the water inlet 221 to the bottom surface 211; the distance from the exhaust port 223 to the first side surface 212 is greater than the distance from the water inlet 221 to the first side surface 212.

[0190] As Figure 15 shown, when the heating system 200 is placed vertically, the bottom surface 211 of the tank body 210 faces downward. As Figure 16 shown, when the heating system 200 is placed horizontally, the first side surface 212 of the tank body 210 faces downward.

[0191] In other words, when placed vertically, the position of the exhaust port 223 is higher than that of the water inlet 221, facilitating the discharge of water vapor above. When placed horizontally, the position of the exhaust port 223 is higher than that of the water inlet 221, facilitating the discharge of water vapor above.

[0192] In this way, the vertical and horizontal placement of the heating system 200 does not affect exhaust.

[0193] In some embodiments, as Figure 14 shown, the distance from the exhaust port 223 to the bottom surface 211 is greater than the distance from the water outlet 222 to the bottom surface 211, and the distance from the exhaust port 223 to the first side surface 212 is greater than the distance from the water outlet 222 to the first side surface 212.

[0194] In this way, the pressure at the exhaust port 223 is less than the pressure at the water outlet 222, which can prevent the exhaust valve 566 at the exhaust port 223 from being accidentally opened. Moreover, steam accumulates at the top of the heating system 200. Setting the water outlet 222 at a position lower than the exhaust port 223 can prevent steam from being discharged from the water outlet 222 and splashing the user. Setting the exhaust port 223 at the top is conducive to exhaust.

[0195] In some embodiments, as Figure 14 shown, the water inlet 221, the water outlet 222, and the exhaust port 223 are arranged on the same side surface of the tank body 210. This facilitates connection with other pipelines and eliminates the need to reserve installation space for other pipelines or valves on the non-open surface of the second bracket 320, making assembly more convenient.

[0196] In some embodiments, as Figure 14 shown, the water inlet 221 and the water outlet 222 can be respectively arranged at the diagonal positions of the front surface of the heating system. The front surface is adjacent to the first side surface 212 and the bottom surface 211. The exhaust port 223 is arranged adjacent to the water outlet 222 and is located at a position closer to the upper right corner. In this way, the water inlet 221 is close to the bottom surface 211, the water outlet 222 is close to the top surface. After the water flows into the tank body 210 from the water inlet 221, it can be fully heated, and the temperature of the water flowing out from the water outlet 222 is high enough and is not easily affected by the water flow at the water inlet 221. The steam at the top end of the tank body 210 can smoothly discharge from the exhaust port 223.

[0197] Of course, the water inlet 221, the water outlet 222 and the exhaust port 223 can also be arranged at other positions. For example, the water inlet 221 can be arranged at the lower left corner of the front surface, and the water outlet 222 and the exhaust port 223 can be arranged at one of the top corners of the top surface. This top corner is close to the upper right corner of the front surface, and the distance from the exhaust port 223 to this top corner is less than the distance from the water outlet 222 to this top corner.

[0198] In some embodiments, as Figures 13 - 16 shown, the heating system 200 includes an exhaust pipe 228. The exhaust pipe 228 is inserted into the exhaust port 223, and a part of the exhaust pipe 228 protrudes outside the tank body 210, which is convenient for connection with other pipelines.

[0199] In some embodiments, as Figure 14 shown, the tank body 210 includes: a tank body 213, an upper end cover 214 and a lower end cover 215. Both ends of the tank body 213 are open. The upper end cover 214 is installed at the upper end of the tank body 213 and closes the upper end of the tank body 213. The lower end cover 215 is installed at the lower end of the tank body 213 and closes the lower end of the tank body 213. A sealing structure is provided at the connection between the upper end cover 214 and the tank body 213, and a sealing structure is provided at the connection between the lower end cover 215 and the tank body 213.

[0200] The water inlet 221 and the water outlet 222 are arranged diagonally in the tank body 213. An exhaust port 223 is also provided near the water outlet 222, and the distance from the exhaust port 223 to the nearest top corner is less than the distance from the water outlet 222 to this top corner.

[0201] In some embodiments, as Figure 14 shown, the water inlet 221 and the water outlet 222 are arranged on the same side surface of the tank body 213. This is convenient for connection with other pipelines.

[0202] In some embodiments, as Figures 13 - 16As shown, the can body 213 is provided with a terminal avoidance hole 224, and the terminal 231 of the heating element 230 extends out of the can body 210 from the terminal avoidance hole 224. The terminal avoidance hole 224, the water inlet 221, and the water outlet 222 are arranged on the same side of the can body 213. In other words, after installing the can body 210 on the second bracket 320, only wiring and connecting pipelines need to be carried out at the open end of the second bracket 320, which is convenient for assembly.

[0203] There may be two terminals 231 of the heating element 230. The can body 213 is provided with two terminal avoidance holes 224, and the two terminals 231 correspond to the two terminal avoidance holes 224 one by one.

[0204] In some embodiments, as Figures 13 - 16 shown, the can body 213 can be connected to the can body assembly bracket 229. The can body assembly bracket 229 is used to fix the can body 210 to the second bracket 320. The can body assembly bracket 229 may be provided with mounting holes, and threaded connectors pass through the mounting holes and are threadedly connected to the second bracket 320.

[0205] In some embodiments, as Figures 13 - 16 shown, the can body 210 is provided with a temperature sensor mounting hole 225. The temperature sensor mounting hole 225 is used to install a thermostat. The ratio of the distance from the temperature sensor mounting hole 225 to the bottom surface 211 to the height of the can body 210 when the heating system 200 is placed vertically is a1, and the ratio of the distance from the temperature sensor mounting hole 225 to the first layer to the height of the can body 210 when the heating system 200 is placed horizontally is a2, satisfying: 0.5 ≤ a1 ≤ 0.8, 0.5 ≤ a2 ≤ 0.8. For example, a1 = 0.6, a2 = 0.6.

[0206] In this way, no matter whether the heating system 200 is placed vertically or horizontally, the thermostat is basically in the middle of the can body 210, and the temperature measurement is more accurate.

[0207] As Figures 13 - 16 shown, the can body 210 can be equipped with a thermostat fixing bracket 250. The thermostat fixing bracket 250 is used to install a thermostat.

[0208] In some embodiments, as Figures 13 - 16 shown, the temperature sensor mounting hole 225, the water inlet 221, and the water outlet 222 are arranged on the same side of the can body 210.

[0209] In other words, after installing the can body 210 on the second bracket 320, only wiring and connecting pipelines need to be carried out at the open end of the second bracket 320, which is convenient for assembly.

[0210] In some embodiments, as Figures 13 - 16As shown, the water inlet 221, the water outlet 222, the exhaust port 223, the wiring terminal avoidance hole 224, and the temperature sensor mounting hole 225 are all provided on the same side of the tank body 210. In this way, after the tank body 210 is installed on the second bracket 320, only wiring and connecting pipelines need to be carried out at the open end of the second bracket 320, which is convenient for assembly.

[0211] As Figures 1 - 6 shown, the water purifier according to the seventh embodiment of the present invention includes: a filtration system 100, a heating system 200, and a water outlet water circuit board 900.

[0212] The filtration system 100 is connected to the heating system 200 through the water outlet water circuit board 900, and the filtration system 100 and the heating system 200 are connected to the external pipeline through the water outlet water circuit board 900.

[0213] The filtration system 100 has a raw water inlet 101 and a purified water outlet 105. The raw water inlet 101 is indirectly connected to the raw water pipe through the water outlet water circuit board 900. For example, the raw water pipe can be a tap water pipe. The raw water to be filtered flows into the filtration system 100 from the raw water inlet 101, and the purified water flows out from the purified water outlet 105 after filtration.

[0214] The heating system 200 is used to heat the water flowing through the heating system 200. The heating system 200 has a water inlet 221 and a water outlet 222. The water inlet 221 of the heating system 200 is connected to the purified water outlet 105 of the filtration system 100 through the water outlet water circuit board 900, and the water outlet 222 of the heating system 200 is connected to the first water supply port of the water purifier through the water outlet water circuit board 900. The purified water outlet 105 of the filtration system 100 is connected to the second water supply port of the water purifier through the water outlet water circuit board 900. It can be understood that the first water supply port is used to supply hot water, and the second water supply port is used to supply normal temperature water.

[0215] Next, refer to Figures 17 - 20 Describe the water outlet water circuit board 900 of the embodiment of the present invention.

[0216] As Figures 17 - 20 shown, the water outlet water circuit board 900 of the embodiment of the present invention includes: a substrate 910 and a plurality of water pipes.

[0217] The substrate 910 can be a flat plate or a concave-convex plate. The water pipes are installed on the substrate 910. In other words, the substrate 910 is a carrier for a plurality of water pipes. The substrate 910 can also be provided with a connection structure for connecting the water outlet water circuit board 900 to the second bracket 320, and this connection structure can be a clamping structure or a threaded connection structure.

[0218] Each water pipe has at least two water ports communicating with each other. For example, two water ports can be formed at both ends of the water pipe, or one water port can be formed at one end of the water pipe, and another water port is opened on the peripheral wall of the water pipe; at least one water pipe has at least three water ports communicating with each other. For example, two water ports can be formed at both ends of the water pipe, and one or more water ports are opened on the peripheral wall of the water pipe.

[0219] The water pipe with two water ports is mainly used to realize the connection of two pipelines, and the water pipe with three or more water ports is mainly used to realize the multi-way connection of branch pipelines.

[0220] The water pipe with at least three water ports communicating with each other and another water pipe define an installation position for installing a valve. In other words, the inlet and outlet of the valve are respectively connected to the water ports of the two water pipes. In this way, the installation position formed on the water outlet water circuit board 900 can also realize the installation of the valve.

[0221] It can be understood that multiple water pipes of the water outlet water circuit board 900 are formed into a whole through the substrate 910. By installing the substrate 910 in the water purifier, such as installing it on the second bracket 320, the fixation of each water pipe can be realized. Install the valve on the water outlet water circuit board 900 and connect the interface to the water port of the water outlet water circuit board 900, so that the layout of the pipeline can be omitted.

[0222] According to the water outlet water circuit board 900 of the embodiment of the present invention, the water pipes with multiple water ports are integrated into a whole through the substrate 910, which can realize the overall assembly and installation of multiple pipelines, and the installation of the valve and the connection of the water circuit are more tidy and concise.

[0223] According to the water purifier of the embodiment of the present invention, the functions of water purification and heating are integrated. By setting the water outlet water circuit board 900 with the above structural form in the water purifier, the pipelines in the water purifier can be reduced, the assembly difficulty can be reduced, the wrong installation can be prevented, and the assembly efficiency can be improved.

[0224] In some embodiments, such as Figure 8 and Figure 10 shown, the water purifier may further include: a filtering water circuit board 110, and the filtering system 100 is connected to the water outlet water circuit board 900 through the filtering water circuit board 110.

[0225] In this way, the pipelines between the filtering system 100, the heating system 200 and the outside can be greatly reduced, the assembly difficulty can be reduced, the wrong installation can be prevented, and the assembly efficiency can be improved.

[0226] In some embodiments, such as Figures 1 - 8As shown, the water purifier may further include: a water pump 510, which is connected to the filtration system 100 and is disposed upstream of the purified water outlet 105 of the filtration system 100. The water pump 510 is used to drive water to flow from the raw water inlet 101 of the filtration system 100 to the purified water outlet 105 of the filtration system 100, and the water pump 510 is also used to drive water to be discharged from the water outlet 222 of the heating system 200.

[0227] In other words, in one working mode of the water purifier, raw water flows into the filtration system 100 from the raw water inlet 101 of the filtration system 100. Under the drive of the water pump 510, the raw water is filtered and then pure water flows out from the purified water outlet 105 of the filtration system 100. The pure water flowing out from the purified water outlet 105 of the filtration system 100 flows into the heating system 200 from the water inlet 221 of the heating system 200. After being heated, under the drive of the water pump 510, it flows into the first water supply port of the water purifier from the water outlet 222 of the heating system 200, thus realizing the supply of hot water.

[0228] As Figure 1 shown, the lower part of the heating system 200 is provided with a water inlet 221, and the upper part of the heating system 200 is provided with a water outlet 222. In other words, the pure water obtained through filtration flows into the heating system 200 from the lower part of the heating system 200 and is heated. When hot water needs to be taken, the hot water flows out from the water outlet 222 at the upper part of the heating system 200 under the action of the water pump 510.

[0229] It can be understood that after the pure water entering the heating system 200 is heated, the density of the hot water is relatively small and it floats, while the density of the cold water is relatively large and it sinks.

[0230] In addition to being used to drive the raw water to flow from the raw water inlet 601 to the purified water outlet 105 to achieve filtration, the water pump 510 can also drive the hot water to be discharged from the water outlet 222 of the heating system 200.

[0231] In other words, the water pump 510 is both the drive pump of the filtration system 100 and the drive pump of the heating system 200. In the embodiment of the present invention, the hot water is not pumped out from the heating system 200 by designing an independent water pump, but a water pressure difference is formed between the water inlet 221 and the water outlet 222 of the heating system 200 by the water pump 510 shared with the filtration system 100. The hot water at the upper part is pushed out to the first water supply port of the water purifier through the water pressure difference. In this way, it is possible to prevent the introduction of external air into the water circuit of the water purifier and prevent secondary pollution.

[0232] The water purifier according to an embodiment of the present invention integrates the functions of water purification and heating. By arranging the water inlet 221 at the lower part of the heating system 200 and the water outlet 222 at the upper part of the heating system 200, and combining with the push-type water outlet mode of the water pump 510, it is possible to avoid the introduction of external air into the water circuit of the water purifier and prevent secondary pollution.

[0233] In some embodiments, the filtration system 100 is connected to the water pump 510 and the water outlet water circuit board 900 through the filtration water circuit board 110. For the specific structure of the filtration water circuit board 110, please refer to Figure 10 the description of other embodiments.

[0234] In some embodiments, as Figure 17 shown, the substrate 910 is provided with an installation structure 911 for fixing the valve at the installation position. In other words, the installation structure 911 is provided near the two water ports for connecting the valve. After the inlet and outlet of the valve are respectively docked with the two water ports, the valve can be fixed through the installation structure 911. The installation structure 911 can be a connecting column with a threaded hole.

[0235] In some embodiments, as Figure 17 and Figure 19 shown, the multiple water pipes of the water outlet water circuit board 900 include: a first water pipe 921, a second water pipe 922, a third water pipe 923, and a fourth water pipe 924.

[0236] Among them, the first water pipe 921 has a first inlet 921a, a first outlet 921b, a first interface 921c, and a second interface 921d, and the first inlet 921a, the first outlet 921b, the first interface 921c, and the second interface 921d are interconnected.

[0237] The second water pipe 922 has a second inlet 922a and a second outlet 922b, and the second inlet 922a and the second outlet 922b are interconnected.

[0238] The first interface 921c and the second inlet 922a define an installation position for installing the valve.

[0239] The third water pipe 923 has a third inlet 923a and a third outlet 923b, and the third inlet 923a and the third outlet 923b are interconnected. The second outlet 922b and the third inlet 923a define an installation position for installing the valve.

[0240] The fourth water pipe 924 has a fourth inlet 924a and a fourth outlet 924b, and the fourth inlet 924a and the fourth outlet 924b are interconnected. The second interface 921d and the fourth inlet 924a define an installation position for installing the valve.

[0241] When installing the water outlet waterway board 900 on the water purifier, the first inlet 921a can be communicated with the purified water outlet 105 of the filtration system 100. In an embodiment where the water purifier includes a filtration waterway board 110, the first inlet 921a can be connected to the twelfth port 125b of the filtration waterway board 110; the first outlet 921b can be connected to the second water supply port of the water purifier; as Figure 18 and Figure 19 shown, the first interface 921c is connected to the inlet of the purified water one-way valve 561, and the second inlet 922a is connected to the outlet of the purified water one-way valve 561; as Figure 18 shown, the second outlet 922b and the third inlet 923a are respectively connected to the inlet and outlet of the purified water control valve 562; the third outlet 923b is connected to the water inlet 221 of the heating system 200; as Figure 18 shown, the second interface 921d and the fourth inlet 924a are respectively connected to the inlet and outlet of the return water control valve 564; the fourth outlet 924b is connected to the inlet of the return water one-way valve 563.

[0242] In this way, in the water purifier, the pipeline connection and valve installation on the first branch 520, the second branch 530 and the return water pipe 540 are extremely simple, and it is not easy to assemble wrongly. The water outlet waterway board 900 with this structural form helps to simplify the waterway layout structure of the water purifier.

[0243] In some embodiments, as Figure 17 shown, the first interface 921c and the second inlet 922a are arranged side by side and open in the same direction, which is convenient for installing the purified water one-way valve 561.

[0244] In some embodiments, as Figure 17 shown, the second outlet 922b and the third inlet 923a are arranged side by side and open in the same direction, which is convenient for installing the purified water control valve 562.

[0245] The second interface 921d and the fourth inlet 924a are arranged side by side and open in the same direction. This is convenient for installing the return water one-way valve 563.

[0246] In the actual processing process, as Figure 17 shown, the first interface 921c and the second inlet 922a open towards the first edge of the substrate 910, the third outlet 923b opens towards the second edge of the substrate 910, and the fourth outlet 924b opens towards the third edge of the substrate 910; the first inlet 921a, the second interface 921d, the second outlet 922b, the third inlet 923a and the fourth inlet 924a are located on one side of the substrate 910; the third outlet 923b is located on the other side of the substrate 910.

[0247] In this way, the valves are basically installed on one side of the substrate 910. The water ports for connecting to the external pipelines of the water purifier are relatively concentrated, the water ports for connecting to the heating system 200 of the water purifier are relatively concentrated; the water ports for connecting to the filter water circuit board 110 of the water purifier are relatively concentrated.

[0248] In some embodiments, as Figure 17 shown, the first water pipe 921, the second water pipe 922, and the fourth water pipe 924 are arranged in parallel side by side; the first outlet 921b and the first interface 921c are respectively located at both ends of the first water pipe 921. The first inlet 921a and the second interface 921d are led out from the peripheral wall of the first water pipe 921, and the second interface 921d is arranged at a position close to the first outlet 921b; the second inlet 922a is located at one end of the second water pipe 922, and the second outlet 922b is led out from the peripheral wall of the second water pipe 922; the third inlet 923a is led out from the peripheral wall of the third water pipe 923, and the third outlet 923b is located at one end of the third water pipe 923; the fourth outlet 924b is located at one end of the fourth water pipe 924, and the fourth inlet 924a is led out from the peripheral wall of the fourth water pipe 924. In this way, when the water outlet water circuit board 900 realizes the above water circuit connection relationship, the structure is simple and easy to process.

[0249] In some embodiments, as Figures 17 - 20 shown, the multiple water pipes of the water outlet water circuit board 900 include: a fifth water pipe 935 and a sixth water pipe 936.

[0250] The fifth water pipe 935 has a fifth inlet 935a, a fifth outlet 935b, and a fifth interface 935c, and the fifth inlet 935a, the fifth outlet 935b, and the fifth interface 935c are interconnected.

[0251] The sixth water pipe 936 has a sixth inlet 936a and a sixth outlet 936b, and the sixth inlet 936a and the sixth outlet 936b are interconnected. The fifth interface 935c and the sixth inlet 936a define an installation position for installing a valve.

[0252] When installing the water outlet water circuit board 900 on the water purifier, the fifth inlet 935a can be connected to the wastewater outlet 104 of the filtration system 100. In an embodiment where the water purifier includes a filter water circuit board 110, the fifth inlet 935a can be connected to the tenth port 124b of the filter water circuit board 110; the fifth interface 935c and the sixth inlet 936a are respectively connected to the inlet and outlet of the exhaust valve 566; the sixth outlet 936b is connected to the exhaust port 223 of the heating system 200, and the fifth outlet 935b is connected to the wastewater outlet 602 of the water purifier.

[0253] In other words, the wastewater discharged from the wastewater outlet 104 of the filtration system 100 flows into the water outlet waterway plate 900 through the fifth inlet 935a, and then flows out from the fifth outlet 935b to the wastewater outlet 602 of the water purifier; the steam or water discharged from the exhaust port 223 of the heating system 200 can flow out through the sixth outlet 936b, the exhaust valve 566, and the fifth outlet 935b to the wastewater outlet 602 of the water purifier.

[0254] In this way, in the water purifier, the pipeline connection and valve installation of the wastewater pipeline and the safety branch 550 are extremely simple, and it is not easy to assemble wrongly. The water outlet waterway plate 900 of this structural form helps to simplify the waterway layout structure of the water purifier.

[0255] In some embodiments, as Figure 17 shown, the fifth interface 935c is arranged side by side with the sixth inlet 936a and opens in the same direction, which is convenient for installing the exhaust valve 566.

[0256] In some embodiments, as Figure 17 shown, the fifth inlet 935a opens towards the first edge of the substrate 910; the sixth outlet 936b opens towards the second edge of the substrate 910; the fifth outlet 935b opens towards the third edge of the substrate 910; the fifth interface 935c and the sixth inlet 936a are located on one side of the substrate 910; the sixth outlet 936b is located on the other side of the substrate 910.

[0257] In this way, the valves are basically installed on one side of the substrate 910, the water outlets for connecting to the external pipelines of the water purifier are relatively concentrated, the water outlets for connecting to the heating system 200 of the water purifier are relatively concentrated; the water outlets for connecting to the filtration waterway plate 110 of the water purifier are relatively concentrated.

[0258] In some embodiments, as Figure 17 shown, the fifth inlet 935a and the fifth outlet 935b are respectively located at both ends of the fifth water pipe 935, and the fifth interface 935c is led out from the peripheral wall of the fifth water pipe 935; the sixth outlet 936b is located at one end of the fourth water pipe 924, and the sixth inlet is led out from the peripheral wall of the sixth water pipe 936.

[0259] In this way, under the condition of realizing the above waterway connection relationship, the water outlet waterway plate 900 has a simple structure and is easy to process.

[0260] In some embodiments, as Figures 17 - 20 shown, the multiple water pipes of the water outlet waterway plate 900 include: the seventh water pipe 947. The seventh water pipe 947 has a seventh inlet 947a and a seventh outlet 947b, and the seventh inlet 947a and the seventh outlet 947b communicate with each other.

[0261] When installing the water outlet water circuit board 900 on the water purifier, the seventh inlet 947a can be connected to the first water supply port of the water purifier, and the seventh outlet 947b can be connected to the water outlet 222 of the heating system 200.

[0262] In this way, in the water purifier, the hot water outlet pipeline is also integrated in the water outlet water circuit board 900, which is not easy to be assembled incorrectly. The water outlet water circuit board 900 of this structural form helps to simplify the water circuit layout structure of the water purifier.

[0263] In some embodiments, as Figures 17 - 20 shown, the multiple water pipes of the water outlet water circuit board 900 include: the eighth water pipe 958. The eighth water pipe 958 has an eighth inlet 958a and an eighth outlet 958b, and the eighth inlet 958a and the eighth outlet 958b are interconnected.

[0264] When installing the water outlet water circuit board 900 on the water purifier, the eighth inlet 958a can be connected to the raw water inlet 101 of the filtration system 100. In an embodiment where the water purifier includes a filtration water circuit board 110, the eighth inlet 958a can be connected to the sixth port 121b of the filtration water circuit board 110; the eighth outlet 958b can be connected to the water supply pipe.

[0265] In this way, in the water purifier, the pipeline for raw water access is also integrated in the water outlet water circuit board 900, which is not easy to be assembled incorrectly. The water outlet water circuit board 900 of this structural form helps to simplify the water circuit layout structure of the water purifier.

[0266] In various embodiments of the present invention, as Figure 1 shown, the filtration system 100 may include an exhaust check valve 565. The exhaust check valve 565 conducts unidirectionally from the exhaust port 223 of the heating system 200 to the wastewater outlet 602 of the water purifier, and the exhaust check valve 565 can prevent wastewater from flowing back into the heating system 200.

[0267] The exhaust check valve 565 can be arranged between the exhaust valve 566 and the exhaust port 223, or the exhaust valve 566 can be arranged between the exhaust check valve 565 and the exhaust port 223.

[0268] In various embodiments of the present invention, as Figure 1 shown, the water purifier may further include: a return pipe 540, and the return pipe 540 is connected between the purified water outlet 105 and the inlet of the water pump 510.

[0269] When the water purifier is just started and the water pump 510 is working, the purified water at the purified water outlet 105 can be sucked back into the water pump 510 through the return pipe 540. Since the water pump 510 is arranged upstream of the purified water outlet 105 of the filtration system 100, the sucked purified water can enter the filtration system 100 again for at least one - stage filtration.

[0270] In other words, when the return water pipe 540 is connected, it can prevent the outflow of the first glass of water with insufficient quality, and is equivalent to enhancing the quality of the water introduced into the filtration system 100, so that the quality of the purified water at the purified water outlet 105 of the filtration system 100 is higher. Especially for the first glass of water, by setting the return water pipe 540, the quality of the first glass of water can be greatly improved.

[0271] In some embodiments, as Figure 1 shown, the return water pipe 540 is connected to a position near the second water supply port of the water purifier. For example, in Figure 17 the shown water outlet waterway board 900, the second interface 921d of the first water pipe 921 is arranged at a position near the first outlet 921b of the first water pipe 921. In this way, in the return fresh water mode, the purified water remaining in the pipeline can be pumped into the inlet of the water pump 510 as much as possible.

[0272] In some embodiments, as Figure 1 shown, the return water pipe 540 is provided with a return water control valve 564. The return water control valve 564 is used to control the conduction state of the return water pipe 540. The return water control valve 564 can be an electromagnetic valve. The return water control valve 564 can be electrically connected to the controller of the water purifier. The water purifier is set to open the return water control valve 564 each time the water purifier is turned on and last for a preset time. The preset time can be 5s - 25s, such as 10s.

[0273] In some embodiments, as Figure 1 shown, the return water pipe 540 is provided with a return water check valve 563 and a return water control valve 564. The return water check valve 563 conducts unidirectionally from the purified water outlet 105 to the inlet of the water pump 510. The return water control valve 564 is used to control the conduction state of the return water pipe 540. The return water control valve 564 can be an electromagnetic valve. The return water check valve 563 can prevent the water that has not been fully filtered from flowing directly into the purified water outlet 105 or the first water supply port through the return water pipe 540.

[0274] The water purifier has a return fresh water mode. In the return fresh water mode, the water pump 510 and the return water control valve 564 are turned on. The water purifier is set to start the return fresh water mode each time the water purifier is powered on and last for a preset time. The preset time can be 5s - 25s, such as 10s.

[0275] In various embodiments of the present invention, the filtration system 100 may include multiple filter elements, and the multiple filter elements may be independently arranged or integrated into a composite filter element.

[0276] In some embodiments, the filtration system 100 includes a first filter element and a second filter element. The water inlet end of the first filter element is connected to the raw water inlet 101, the water outlet end of the first filter element is connected to the inlet of the water pump 510, the outlet of the water pump 510 is connected to the water inlet end of the second filter element, and the water outlet end of the second filter element is connected to the purified water outlet 105.

[0277] The first filter element is used to achieve the preliminary filtration of raw water, and can filter out large particulate matters such as sediment, rust, insect eggs, and bloodworms in the raw water. The raw water can be tap water, well water, etc. The first filter element can be a PP cotton filter element (polypropylene meltblown filter element), a carbon rod filter element, a composite filter element, etc.

[0278] The second filter element is provided with a reverse osmosis membrane, which can be an artificial semi-permeable membrane. The membrane pore diameter of the reverse osmosis membrane is very small, and can effectively remove impurities such as dissolved salts, colloids, microorganisms, and organic matters in the water.

[0279] In some embodiments, the filtration system 100 includes a first filter element, a second filter element, and a third filter element. The water inlet end of the first filter element is connected to the raw water inlet 101, the water outlet end of the first filter element is connected to the inlet of the water pump 510, the outlet of the water pump 510 is connected to the water inlet end of the second filter element, the water outlet end of the second filter element is connected to the water inlet end of the third filter element, and the water outlet end of the third filter element is connected to the purified water outlet 105.

[0280] The first filter element is used to achieve the preliminary filtration of raw water, and can filter out large particulate matters such as sediment, rust, insect eggs, and bloodworms in the raw water. The raw water can be tap water, well water, etc. The first filter element can be a PP cotton filter element (polypropylene meltblown filter element), a carbon rod filter element, a composite filter element, etc.

[0281] The second filter element is provided with a reverse osmosis membrane, which can be an artificial semi-permeable membrane. The membrane pore diameter of the reverse osmosis membrane is very small, and can effectively remove impurities such as dissolved salts, colloids, microorganisms, and organic matters in the water.

[0282] The third filter element is used to adsorb odors and residual chlorine, and can be used to improve the taste of purified water. The third filter element can be an activated carbon filter element.

[0283] The water purifier according to various embodiments of the present invention can provide various types of water or beverages, such as normal temperature purified water and heated purified water.

[0284] In some embodiments, as Figure 1 shown, the water purifier further includes: a first branch 520 and a second branch 530.

[0285] Among them, the first branch 520 is connected between the purified water outlet 105 of the filtration system 100 and the first water supply port of the water purifier, and the heating system 200 is arranged on the first branch 520. The water inlet 221 and the water outlet 222 of the heating system 200 are both connected to the first branch 520, and the water inlet 221 and the water outlet 222 of the heating system 200 can be connected in series on the first branch 520. The second branch 530 is connected between the purified water outlet 105 and the second water supply port of the water purifier.

[0286] In this embodiment, the first water supply port provides hot water through the first branch 520, and the second water supply port provides normal temperature pure water through the second branch 530.

[0287] Both the first water supply port and the second water supply port can be connected to the faucet 800. When the faucet 800 communicating with the first water supply port or the second water supply port is opened, the corresponding branch can be opened.

[0288] In some embodiments, as Figure 1 shown, the return pipe 540 is connected to the purified water outlet 105 through the second branch 530, and the connection point of the return pipe 540 and the second branch 530 is located near the second water supply port. For example, in Figure 17 the water outlet water circuit board 900 shown, the second interface 921d of the first water pipe 921 is arranged at a position near the first outlet 921b of the first water pipe 921. In this way, in the fresh water return mode, the pure water remaining in the pipeline can be pumped into the inlet of the water pump 510 as much as possible.

[0289] In some embodiments, as Figure 1 shown, the first branch 520 is provided with a purified water control valve 562. The purified water control valve 562 is used to control the conduction state of the first branch 520. The purified water control valve 562 can be an electromagnetic valve, and the purified water control valve 562 can be electrically connected to the controller of the water purifier.

[0290] In some embodiments, as Figure 1 shown, the first branch 520 is provided with a purified water check valve 561 and a purified water control valve 562. The purified water control valve 562 is used to control the conduction state of the first branch 520. The purified water control valve 562 can be an electromagnetic valve, and the purified water control valve 562 can be electrically connected to the controller of the water purifier. The purified water check valve 561 conducts unidirectionally from the purified water outlet 105 to the first water supply port.

[0291] In some embodiments, as Figure 1 shown, the water purifier further includes: an exhaust valve 566 and a wastewater valve 567.

[0292] The exhaust valve 566 is connected between the exhaust port 223 of the heating system 200 and the wastewater outlet 602 of the water purifier. The exhaust valve 566 is used to control the conduction state between the exhaust port 223 and the wastewater outlet 602. The exhaust valve 566 can be an electromagnetic valve, and the exhaust valve 566 can be electrically connected to the controller of the water purifier, or the exhaust valve 566 can be a pressure valve. When the exhaust valve 566 is opened, the heating system 200 can be depressurized or drained of stale water through the exhaust port 223.

[0293] The wastewater valve 567 is connected between the wastewater outlet 104 of the filtration system 100 and the wastewater outlet 602 of the water purifier. The wastewater valve 567 is used to control the conduction state between the wastewater outlet 104 and the wastewater outlet 602. The wastewater valve 567 can be a solenoid valve, and the wastewater valve 567 can be electrically connected to the controller of the water purifier.

[0294] In various embodiments of the present invention, as Figure 4 , Figure 6 and Figure 11 shown, the water purifier may further include: a water outlet waterway board 900. Each water outlet of the heating system 200 is connected to the water outlet waterway board 900, and the water outlet waterway board 900 is installed on the second bracket 320. In this way, the pipeline layout inside the water purifier can be reduced, the assembly difficulty can be lowered, misassembly can be prevented, and the assembly efficiency can be improved.

[0295] As Figure 4 , Figure 6 and Figure 11 shown, the filtration waterway board 110 is located at one end of the second bracket 320 in the length direction. The water outlet waterway board 900 and the second bracket 320 are arranged along direction B. In this way, the space below the second bracket 320 can be fully utilized, and the structure of the entire water purifier is compact.

[0296] In various embodiments of the present invention, as Figure 4 , Figure 5 , Figure 6 and Figure 8 shown, the water purifier may further include: a water pump 510. The water pump 510 is connected to the filtration system 100. The water pump 510 is used to drive water to flow from the raw water inlet 101 of the filtration system 100 to the purified water outlet 105, and the water pump 510 is used to drive water to be discharged from the water outlet 222 of the heating system 200.

[0297] In other words, in one working mode of the water purifier, raw water flows into the filtration system 100 from the raw water inlet 101 of the filtration system 100, and under the drive of the water pump 510, after being filtered, purified water flows out from the purified water outlet 105 of the filtration system 100. The purified water flowing out from the purified water outlet 105 of the filtration system 100 flows into the heating system 200 from the water inlet 221 of the heating system 200. After being heated, under the drive of the water pump 510, it flows into the first water supply port of the water purifier from the water outlet 222 of the heating system 200, thereby realizing the supply of hot water.

[0298] In addition to being used to drive raw water to flow from the raw water inlet 601 to the purified water outlet 105 to achieve filtration, the water pump 510 can also drive hot water to be discharged from the water outlet 222 of the heating system 200.

[0299] In other words, the water pump 510 serves as the driving pump for both the filtration system 100 and the heating system 200. In the embodiment of the present invention, the hot water is not pumped out of the heating system 200 by designing an independent water pump, but a water pressure difference is formed between the water inlet 221 and the water outlet 222 of the heating system 200 by the water pump 510 shared with the filtration system 100. The hot water in the upper part is pushed out to the first water supply port of the water purifier through the water pressure difference, so that the introduction of external air into the water path of the water purifier can be avoided, and secondary pollution can be prevented.

[0300] As Figures 4 - 6 shown, the water pump 510 is installed on the first bracket 310, and the water pump 510 is located between the first bracket 310 and the second bracket 320.

[0301] It can be understood that in this embodiment, there is no need to design an independent bracket for the water pump 510, which can simplify the layout of the water purifier and make the structure more compact. Installing the water pump 510 between the first bracket 310 and the second bracket 320, the two brackets play a good protective role for the relatively expensive water pump 510, and the water pump 510 is located between the filtration system 100 and the heating system 200 (heating system 200), which is equivalent to being located in the middle area of the whole water purifier. Using the blocking effect of other peripheral structures, the noise generated by the operation of the water pump 510 can be effectively isolated.

[0302] In each embodiment of the present invention, as Figure 6 、 Figure 8 and Figure 11 shown, both the second bracket 320 and the first bracket 310 are provided with flanges protruding towards each other, and the flanges are used to define an intermediate installation cavity 323.

[0303] In other words, the first bracket 310 is provided with a first flange 312 protruding towards the second bracket 320, and the second bracket 320 is provided with a second flange 322 protruding towards the first bracket 310. The first flange 312 and the second flange 322 are used to jointly define the intermediate installation cavity 323 with the first bracket 310 and the second bracket 320, and the water pump 510 is installed in the intermediate installation cavity 323.

[0304] In this way, protective structures are provided on all six sides of the water pump 510, which can better protect the water pump 510.

[0305] In each embodiment of the present invention, as Figure 5 and Figure 6 shown, the filtration system 100, the water pump 510 and the heating system 200 are arranged side by side along the docking direction of the first bracket 310 and the second bracket 320, and the length directions of the filtration system 100, the water pump 510 and the heating system 200 are parallel.

[0306] Among them, direction A is the docking direction of the first bracket 310 and the second bracket 320, direction B is the length direction of the filtration system 100, the water pump 510, and the heating system 200, and direction A is perpendicular to direction B.

[0307] With the above layout, the structure of the entire water purifier is compact, occupying a small space, facilitating under-counter installation, and the parallel length directions of the filtration system 100, the water pump 510, and the heating system 200 facilitate the independent disassembly of each component in this direction.

[0308] In each embodiment of the present invention, as Figure 8 and Figure 10 shown, the water purifier according to the embodiment of the present invention may further include: a filtration water circuit board 110, each water port of the filtration system 100 and the water pump 510 is connected to the filtration water circuit board 110, and the filtration water circuit board 110 is installed on the first bracket 310.

[0309] In other words, each water port of the filtration system 100 and the water pump 510 is connected to other pipelines through the filtration water circuit board 110, which can simplify the pipeline layout inside the entire water purifier. There are fewer pipelines inside the water purifier, facilitating pipeline laying.

[0310] In each embodiment of the present invention, as Figure 1 shown, the filtration system 100 includes: a raw water inlet 101, a water pump inlet 102, a water pump outlet 103, a wastewater outlet 104, and a purified water outlet 105. One end of the water pump inlet 102 is connected to the water outlet end of the first filter element, the other end of the water pump inlet 102 is connected to the inlet of the water pump 510, and the outlet of the water pump 510 is connected to the water pump outlet 103.

[0311] As Figure 10 shown, the filtration water circuit board 110 includes a plurality of pipe bodies 111, and the pipe bodies 111 have a plurality of water ports, and these water ports include: a first port 121a, a second port 122a, a third port 123a, a fourth port 124a, a fifth port 125a, a sixth port 121b, a seventh port 122b, an eighth port 122c, a ninth port 123b, a tenth port 124b, an eleventh port 124c, and a twelfth port 125b.

[0312] The first port 121a is connected to the raw water inlet 101 of the filtration system 100, the second port 122a is connected to the water pump inlet 102 of the filtration system 100, the third port 123a is connected to the water pump outlet 103 of the filtration system 100, the fourth port 124a is connected to the wastewater outlet 104 of the filtration system 100, and the fifth port 125a is connected to the purified water outlet 105 of the filtration system 100.

[0313] The sixth port 121b is in communication with the first port 121a, the seventh port 122b and the eighth port 122c are in communication with each other and with the second port 122a, the ninth port 123b is in communication with the third port 123a, the tenth port 124b and the eleventh port 124c are in communication with each other and with the fourth port 124a, and the twelfth port 125b is in communication with the fifth port 125a.

[0314] The sixth port 121b is used to introduce raw water. Specifically, the sixth port 121b can be connected to the eighth inlet 958a of the outlet water circuit board 900. The seventh port 122b is used to install the water pump inlet valve 568. The eighth port 122c is connected to the inlet of the water pump 510. The ninth port 123b is connected to the outlet of the water pump 510. The tenth port 124b is used to be connected to the waste water outlet 602. The eleventh port 124c is used to install the waste water valve 567. The twelfth port 125b is used to be connected to the inlet of the hot water system 221 or the second water supply port of the water purifier. Specifically, the twelfth port 125b can be connected to the first inlet 921a of the outlet water circuit board 900.

[0315] In some specific embodiments, as Figure 10 shown, five pipe bodies 111 are arranged side by side, and one ends of these five pipe bodies 111 respectively form the first port 121a, the second port 122a, the third port 123a, the fourth port 124a and the fifth port 125a which are arranged side by side. The raw water inlet 101, the water pump inlet 102, the water pump outlet 103, the waste water port 104 and the purified water outlet 105 are also arranged side by side in the filtration system 100. For example, Figure 8 and Figure 10 in the embodiment shown, the third port 123a, the first port 121a, the fifth port 125a, the second port 122a and the fourth port 124a are arranged side by side in sequence. Correspondingly, the water pump inlet 102, the raw water inlet 101, the purified water outlet 105, the water pump inlet 102 are arranged side by side in sequence.

[0316] In each embodiment of the present invention, as Figure 6 and Figure 8 shown, the filtration water circuit board 110 is located between the first bracket 310 and the second bracket 320. In this way, the first bracket 310 and the second bracket 320 can be fully utilized to protect the filtration water circuit board 110 and prevent the filtration water circuit board 110 from being damaged by impact.

[0317] In some embodiments, as Figure 6 and Figure 8 shown, the filtration water circuit board 110 is installed at one end in the length direction of the water pump 510. The filtration water circuit board 110 and the water pump 510 are arranged along direction B. In this way, the space between the first bracket 310 and the second bracket 320 is fully utilized, and the structure of the whole water purifier is compact.

[0318] In some embodiments, asFigure 10 As shown, the filter water circuit board 110 includes: a support 112 and a plurality of pipe bodies 111 mounted on the support 112. The support 112 is connected to the first bracket 310. Each water inlet of the filter system 100 and each water inlet of the water pump 510 are respectively connected to the corresponding pipe body 111 of the filter water circuit board 110.

[0319] In the actual production process, the support 112 and the pipe bodies 111 can be integrally processed plastic parts. The support 112 can be designed with a hollow structure or weight-reducing holes to help reduce the weight of the whole machine.

[0320] In some embodiments, as Figure 10 shown, the support 112 includes connecting arms 113. There can be two connecting arms 113, which are respectively arranged at both ends of the support 112 and extend upward. The pipe bodies 111 are located between the two connecting arms 113. As Figure 9 shown, the first bracket 310 is provided with connecting arm mounting holes 311. Correspondingly, there are also two connecting arm mounting holes 311. The first bracket 310 is further provided with pipe body avoidance holes 313 for avoiding the pipe bodies 111. A plurality of pipe body avoidance holes 313 can be connected to form a continuous integral body. In this way, the matching relationship between the pipe body avoidance holes 313 and the pipe bodies 111 and the matching relationship between the connecting arm mounting holes 311 and the connecting arms 113 can play a role in positioning the filter water circuit board 110.

[0321] As Figure 6 and Figure 8 shown, the water purifier can further include: a pressure rod 712, which is used to press the filter system 100. One end of the pressure rod 712 is connected to the first bracket 310, and the connecting arm 113 passes through the connecting arm mounting hole 311 and is connected to the other end of the pressure rod 712. In this way, when it is necessary to replace the filter element of the filter system 100, the filter element can be conveniently disassembled by disassembling the pressure rod 712.

[0322] In each embodiment of the present invention, as Figure 4 shown, the housing can include: a machine shell 701, a front shell 702, an upper cover 703, a top cover 704 and a base 705. The front shell 702, the upper cover 703, the top cover 704 and the base 705 are all mounted on the machine shell 701. The housing can be a plastic part or a metal part, or a plastic part with a metal coating.

[0323] In each embodiment of the present invention, as Figure 4 shown, the water purifier can further include: a leakage protection valve 569, a decorative plate 706, a power adapter 707, a display 708, an electric control box 709, a power board 710 and a TDS (Total Dissolved Solids) detection probe 711.

[0324] In various embodiments of the present invention, the water purifier may further include: a controller (not shown in the figure), which is electrically connected to the heating system 200, the water purification control valve 562, the exhaust valve 566, the wastewater valve 567, and the water pump 510. The controller is used to control the opening and closing of the heating system 200, the water purification control valve 562, the exhaust valve 566, the wastewater valve 567, and the water pump 510.

[0325] In some embodiments, the controller is configured to control the water purifier to sequentially enter the first flushing mode, the forced flushing mode, and the stale water discharging mode when it is determined that the water purifier is powered on for the first time.

[0326] In the first flushing mode, the water pump 510 is turned on, the water purification control valve 562 is closed, the heating system 200 is closed, the wastewater valve 567 is opened, and the exhaust valve 566 is closed. In this mode, the raw water flows in from the raw water inlet 101 under the driving action of the water pump 510 and then discharges from the wastewater outlet 104, preventing impurities in the filtration system 100 from entering the heating system 200 during the initial use.

[0327] In the embodiment as Figure 1 shown, referring to Table 1, in the first flushing mode, the water pump 510 is turned on, the water pump inlet valve 568 is opened, the water purification control valve 562 is closed, the heating system 200 is closed, the wastewater valve 567 is opened, and the exhaust valve 566 is closed.

[0328] In the forced flushing mode, the second water supply port (the normal temperature water port of the faucet 800) is opened, the water pump 510 is turned on, the water purification control valve 562 is disconnected, the heating system 200 is closed, the wastewater valve 567 is closed, and the exhaust valve 566 is closed. In this mode, the raw water flows in from the raw water inlet 101 under the driving action of the water pump 510 and then discharges from the second water supply port of the faucet 800, so as to provide a large flow rate of flushing.

[0329] In the embodiment as Figure 1 shown, referring to Table 1, in the forced flushing mode, the water pump 510 is turned on, the water pump inlet valve 568 is opened, the water purification control valve 562 is closed, the heating system 200 is closed, the wastewater valve 567 is closed, and the exhaust valve 566 is closed.

[0330] In the stale water discharging mode, the second water supply port is closed, the water pump 510 is turned on, the water purification control valve 562 is opened, the heating system 200 is closed, the wastewater valve 567 is closed, and the exhaust valve 566 is opened. In this mode, the raw water flows in from the raw water inlet 101 under the driving action of the water pump 510, then flushes the heating system 200, and discharges the stale water in the heating system 200 from the exhaust port 223.

[0331] In the embodiment as Figure 1In the illustrated embodiment, referring to Table 1, in the stale water discharge mode, the water pump 510 is turned on, the water pump inlet valve 568 is turned on, the purified water control valve 562 is turned on, the heating system 200 is turned off, the waste water valve 567 is turned off, and the exhaust valve 566 is turned on.

[0332] In some embodiments, the preset duration of the first flushing mode is t1, the preset duration of the forced flushing mode is t2, and the preset duration of the stale water discharge mode is t3, satisfying: 15s ≤ t1 ≤ 60s, 6min ≤ t2 ≤ 15min, 2min ≤ t3 ≤ 5min. By limiting the duration of each mode to the above range, water consumption can be reduced while ensuring thorough flushing.

[0333] In a specific embodiment, when it is determined that the water purifier is powered on for the first time, all loads are turned off for 5s. After entering the first flushing mode for 30s, the handle of the faucet 800 at the second water supply port is opened, entering the forced flushing mode for 10min. After completion, the handle of the faucet 800 at the second water supply port is closed, and then the stale water discharge mode is entered for 3min.

[0334] In some embodiments, the controller is set to control the water purifier to enter the flushing mode when it is determined that the water purifier is not powered on for the first time.

[0335] Among them, as shown in Table 1, in the flushing mode, the water pump 510 is turned on, the purified water control valve 562 is turned off, and the waste water valve 567 is turned on. In this mode, the raw water flows in from the raw water inlet 101 under the driving action of the water pump 510 and then discharges from the waste water outlet 104, preventing the impurities deposited in the filtration system 100 from flowing downstream.

[0336] In the embodiment as Figure 1 shown, referring to Table 1, in the flushing mode, the water pump 510 is turned on, the water pump inlet valve 568 is turned on, the purified water control valve 562 is turned off, the waste water valve 567 is turned on, and the heating system 200 and the exhaust valve 566 are turned on or off based on the temperature of the heating system 200.

[0337] As Figure 21 shown, if both the heating system 200 and the exhaust valve 566 are in the closed state, it is determined that the temperature of the heating system 200 is less than the first target temperature, and both the heating system 200 and the exhaust valve 566 are switched to the open state. If both the heating system 200 and the exhaust valve 566 are in the open state, it is determined that the temperature of the heating system 200 is greater than or equal to the second target temperature, and both the heating system 200 and the exhaust valve 566 are switched to the closed state; where the second target temperature is higher than the first target temperature.

[0338] In other words, whether to switch the operating states of the heating system 200 and the exhaust valve 566 needs to be determined based on the current operating states of the heating system 200 and the exhaust valve 566 and the temperature of the heating system 200.

[0339] In some embodiments, the first target temperature is T1 and the second target temperature is T2, satisfying: 65°C ≤ T1 ≤ 75°C, 90°C ≤ T2 ≤ 100°C. In other words, in the relatively low temperature range, the heating system 200 needs to be turned on to heat the purified water, and the exhaust valve 566 needs to be turned on to prevent excessive pressure in the heating system 200; when heated to the relatively high temperature range, the heating system 200 and the exhaust valve 566 can be turned off based on a higher threshold.

[0340] In a specific embodiment, T1 = 70°C and T2 = 95°C.

[0341] In actual execution, if it is not the first power-on, all loads are turned off for 5 s and enter the flushing mode for 25 s.

[0342] In some embodiments, the controller is set to determine that the second water supply port of the water purifier is open after the flushing mode ends, control the water purifier to enter the normal temperature water production mode. In the normal temperature water production mode, the water pump 510 is turned on, the water purification control valve 562 is disconnected, the wastewater valve 567 is closed, the exhaust valve 566 is closed, and the heating system 200 is controlled based on the received temperature of the heating system 200.

[0343] During actual use, when the handle of the faucet 800 corresponding to the second water supply port is opened, the water purifier can be activated. The water purifier enters the flushing mode and automatically enters the normal temperature water production mode after the flushing mode ends. In this mode, the raw water flows in from the raw water inlet 101 under the driving action of the water pump 510, and then flows out from the water purification outlet 105 through the second branch 530 from the second water supply port.

[0344] In the embodiments as Figure 1 shown, referring to Table 1, in the normal temperature water production mode, the water pump 510 is turned on, the water pump inlet valve 568 is turned on, the water purification control valve 562 is closed, the wastewater valve 567 is closed, the exhaust valve 566 is closed, and the heating system 200 is controlled based on the received temperature of the heating system 200.

[0345] Specifically, as Figure 22 shown, if the heating system 200 is in the off state and it is determined that the temperature of the heating system 200 is less than the third target temperature, control the heating system 200 to switch to the on state; if the heating system 200 is in the on state and it is determined that the temperature of the heating system 200 is greater than or equal to the fourth target temperature, control the heating system 200 to switch to the off state; wherein, the fourth target temperature is higher than the third target temperature.

[0346] In other words, whether to switch the operating state of the heating system 200 needs to be determined based on the current operating state of the heating system 200 and the temperature of the heating system 200.

[0347] In some embodiments, the third target temperature is T3 and the fourth target temperature is T4, satisfying: 65°C ≤ T3 ≤ 75°C, 76°C ≤ T4 ≤ 85°C. In other words, in the relatively low temperature range, the heating system 200 needs to be turned on to heat the purified water; when it is heated to the relatively high temperature range, the heating system 200 can be turned off based on a higher threshold.

[0348] In a specific embodiment, T3 = 70°C and T4 = 80°C.

[0349] In some embodiments, the controller is set to determine that the first water supply port of the water purifier is opened after the flushing mode ends, and control the water purifier to enter the hot water production mode. In the hot water production mode, the water pump 510 is turned on, the purified water control valve 562 is opened, the waste water valve 567 is closed, the exhaust valve 566 is closed, and the heating system 200 is controlled based on the temperature of the heating system 200 received.

[0350] During the actual use process, when the handle of the faucet 800 corresponding to the first water supply port is opened, the water purifier can be activated. The water purifier enters the flushing mode and automatically enters the hot water production mode after the flushing mode ends. In this mode, the raw water flows in from the raw water inlet 101 under the driving action of the water pump 510, and then flows into the heating system 200 from the purified water outlet 105. The hot water in the upper part of the heating system 200 flows out from the first water supply port under the driving of the water pressure.

[0351] In the embodiment as Figure 1 shown, referring to Table 1, in the hot water production mode, the water pump 510 is turned on, the water pump inlet valve 568 is opened, the purified water control valve 562 is opened, the waste water valve 567 is closed, the exhaust valve 566 is closed, and the heating system 200 is controlled based on the temperature of the heating system 200 received.

[0352] Specifically, as Figure 22 shown, if the heating system 200 is in the off state and it is determined that the temperature of the heating system 200 is less than the third target temperature, control the heating system 200 to switch to the on state; if the heating system 200 is in the on state and it is determined that the temperature of the heating system 200 is greater than or equal to the fourth target temperature, control the heating system 200 to switch to the off state; wherein, the fourth target temperature is higher than the third target temperature.

[0353] In other words, whether to switch the operating state of the heating system 200 needs to be determined based on the current operating state of the heating system 200 and the temperature of the heating system 200.

[0354] In some embodiments, the third target temperature is T3 and the fourth target temperature is T4, satisfying: 65°C ≤ T3 ≤ 75°C, 76°C ≤ T4 ≤ 85°C. In other words, in the relatively low temperature range, the heating system 200 needs to be turned on to heat the purified water; when it is heated to the relatively high temperature range, the heating system 200 can be turned off based on a higher threshold.

[0355] In a specific embodiment, T3 = 70°C and T4 = 80°C.

[0356] In some embodiments, after the flushing mode ends, it is determined that both the first water supply port and the second water supply port of the water purifier are open, and the water purifier is controlled to enter the warm water production mode. In the warm water production mode, the water pump 510 is turned on, the water purification control valve 562 is opened, the waste water valve 567 is closed, the exhaust valve 566 is closed, and the heating system 200 is controlled based on the temperature received from the heating system 200.

[0357] During actual use, when the handles of the faucets 800 corresponding to the first water supply port and the second water supply port are both opened, the water purifier can be activated and enters the flushing mode, and automatically enters the warm water production mode after the flushing mode ends. In this mode, under the driving action of the water pump 510, raw water flows in from the raw water inlet 101. A part of the purified water flows into the heating system 200 from the purified water outlet 105. The hot water in the upper part of the heating system 200 flows out from the first water supply port under the driving of the water pressure, and another part of the purified water flows out from the purified water outlet 105 through the second branch 530 from the second water supply port.

[0358] In the embodiment as Figure 1 shown, referring to Table 1, in the warm water production mode, the water pump 510 is turned on, the water pump inlet valve 568 is opened, the water purification control valve 562 is opened, the waste water valve 567 is closed, the exhaust valve 566 is closed, and the heating system 200 is controlled based on the temperature received from the heating system 200.

[0359] Specifically, as Figure 22 shown, if the heating system 200 is in the off state, it is determined that the temperature of the heating system 200 is less than the third target temperature, and the heating system 200 is controlled to switch to the on state; if the heating system 200 is in the on state, it is determined that the temperature of the heating system 200 is greater than or equal to the fourth target temperature, and the heating system 200 is controlled to switch to the off state; wherein, the fourth target temperature is higher than the third target temperature.

[0360] In other words, whether to switch the working state of the heating system 200 needs to be determined based on the current working state of the heating system 200 and the temperature of the heating system 200.

[0361] In some embodiments, the third target temperature is T3 and the fourth target temperature is T4, satisfying: 65°C ≤ T3 ≤ 75°C, 76°C ≤ T4 ≤ 85°C. In other words, in the relatively low temperature range, the heating system 200 needs to be turned on to heat the purified water; when it is heated to the relatively high temperature range, the heating system 200 can be turned off based on a higher threshold.

[0362] In a specific embodiment, T3 = 70°C and T4 = 80°C.

[0363] Table 1

[0364]

[0365] As shown in Table 1, the water purifier also has a standby state. In the standby state, the water pump 510 is turned off, the water pump inlet valve 568 is turned off, the water purification control valve 562 is turned off, the wastewater valve 567 is turned off, and the exhaust valve 566 and the heating system 200 are turned on or off based on the temperature of the heating system 200.

[0366] As Figure 21 shown, if both the heating system 200 and the exhaust valve 566 are in the closed state, it is determined that the temperature of the heating system 200 is less than the first target temperature, and both the heating system 200 and the exhaust valve 566 are switched to the open state. If both the heating system 200 and the exhaust valve 566 are in the open state, it is determined that the temperature of the heating system 200 is greater than or equal to the second target temperature, and both the heating system 200 and the exhaust valve 566 are switched to the closed state; wherein, the second target temperature is higher than the first target temperature.

[0367] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

[0368] The above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, those of ordinary skill in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present invention do not deviate from the spirit and scope of the technical solutions of the present invention, and should all be covered by the scope of the claims of the present invention.

Claims

1. A heating system, characterized in that, Comprising: A tank body, the tank body having an adjacent bottom surface and a first side surface, the tank body having a water inlet and a water outlet, the distance from the water outlet to the bottom surface being greater than the distance from the water inlet to the bottom surface, and the distance from the water outlet to the first side surface being greater than the distance from the water inlet to the first side surface; A heating element, the heating element being installed inside the tank body; Wherein, when the heating system is placed vertically, the bottom surface faces downwards, and the water outlet is located above the water inlet; when the heating system is placed horizontally, the first side surface faces downwards, and the water outlet is located above the water inlet; The tank body has an exhaust port, the distance from the exhaust port to the bottom surface being greater than the distance from the water inlet to the bottom surface, and the distance from the exhaust port to the first side surface being greater than the distance from the water inlet to the first side surface; The distance from the exhaust port to the bottom surface is greater than the distance from the water outlet to the bottom surface, and the distance from the exhaust port to the first side surface is greater than the distance from the water outlet to the first side surface; The tank body is provided with a temperature sensor mounting hole, the ratio of the distance from the temperature sensor mounting hole to the bottom surface to the height of the tank body when the heating system is placed vertically is a1, and the ratio of the distance from the temperature sensor mounting hole to the first side surface to the height of the tank body when the heating system is placed horizontally is a2, satisfying: 0.5 ≤ a1 ≤ 0.8, 0.5 ≤ a2 ≤ 0.

8.

2. The heating system according to claim 1, wherein The water inlet, the water outlet and the exhaust port are provided on the same side surface of the tank body.

3. The heating system according to any one of claims 1-2, characterized in that The tank body includes a tank body with both ends open and an upper end cover and a lower end cover respectively installed at both ends of the tank body, and the water inlet and the water outlet are arranged diagonally on the tank body.

4. The heating system according to claim 3, characterized in that The water inlet and the water outlet are provided on the same side surface of the tank body.

5. The heating system according to claim 3, wherein, The tank body is provided with a wiring terminal avoidance hole, and the wiring terminal of the heating element extends out of the tank body from the wiring terminal avoidance hole, and the wiring terminal avoidance hole, the water inlet and the water outlet are provided on the same side surface of the tank body.

6. The heating system according to claim 1, characterized in that, The temperature sensor mounting hole, the water inlet and the water outlet are provided on the same side surface of the tank body.

7. A water purifier, characterized in that, Comprising: A filtration system, the filtration system having a raw water inlet and a purified water outlet; The heating system according to any one of claims 1-6, the water inlet of the heating system is connected to the purified water outlet, the water outlet of the heating system is connected to the first water supply port of the water purifier, and the heating system is used for heating the water flowing through the heating system.

8. The water purifier according to claim 7, characterized in that, Further comprising: A water pump, the water pump being connected to the filtration system and arranged upstream of the purified water outlet, the water pump being used for driving water to flow from the raw water inlet to the purified water outlet, and for driving water to be discharged from the water outlet of the heating system.

9. The water purifier according to claim 8, wherein Further comprising: A return pipe, the return pipe being connected between the purified water outlet and the inlet of the water pump.

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