Faucets and water purifiers

Abstract

This invention relates to the field of water purification technology and discloses a hot water faucet and a water purifier. The hot water faucet includes: a diversion box having a diversion inlet, a first diversion outlet, and a second diversion outlet; a first heating device and a first valve group are provided inside the diversion box; the diversion inlet is suitable for introducing purified water; a second heating device is suitable for heating the water flowing out from the second diversion outlet; and a controller is suitable for controlling the first valve group to allow room temperature water to flow out; or the controller controls the first valve group and controls the first and second heating devices to heat water to generate boiling water; or the controller controls the first valve group to allow purified water to enter a heat exchanger from the second diversion outlet and to allow purified water to enter the second heating device from the second diversion outlet for heating, so that boiled water is generated after heat exchange in the heat exchanger.

Description

Technical Field

[0001] This invention relates to the field of water purifier technology, specifically to faucets and water purifiers. Background Technology

[0002] Water purifiers use a purification filter to purify tap water, thus achieving the purpose of water purification.

[0003] In existing technologies, the faucet of a water purifier has a heat exchange function. The heat exchange system usually contains only one heating element, and the water channels for different modes are not separated. When hot water is taken out and room temperature water is taken out, the residual heat of the heating element will affect the temperature of the room temperature water, making the water too hot and affecting its drinking value. Summary of the Invention

[0004] In view of this, the present invention provides a faucet to solve the problem that the heat exchanger and faucet are integrated in the prior art, resulting in a large faucet size.

[0005] On one hand, the present invention provides a faucet, a hot water faucet comprising: a diversion box having a diversion inlet, a first diversion outlet, and a second diversion outlet; the diversion box being provided with a first heating device and a first valve group; the diversion inlet being adapted to allow purified water to flow in; a second heating device adapted to heat the water flowing out from the second diversion outlet; a heat exchanger adapted to exchange heat between the water flowing out from the second diversion outlet and the hot water flowing out after being heated by the second heating device to produce cooked water; and a controller adapted to control the first valve group so that purified water enters the second heating device from the first diversion outlet and then flows out as room temperature water; or the controller controls the first valve group and controls the heating of the first heating device and the second heating device, so that the hot water heated by the first heating device enters the second heating device from the first diversion outlet and is heated to produce boiling water; or the controller controls the first valve group so that purified water enters the heat exchanger from the second diversion outlet and enters the second heating device from the second diversion outlet for heating, so that cooked water is produced after heat exchange in the heat exchanger.

[0006] The beneficial effects are that, through the diversion box and the controller controlling the first valve group, the first heating device, and the second heating device, the purified water entering the diversion box can ultimately become room temperature water, hot water, or boiled water, thereby meeting the user's different water usage needs. Moreover, the use of room temperature water, hot water, or boiled water can be done independently, avoiding the problem of residual heat raising the water temperature when using room temperature water. Furthermore, the residual heat from the first heating device is used to heat the water before it enters the second heating device, improving the efficiency of using hot water, reducing waiting time, and improving the user experience.

[0007] As an optional implementation, the diversion box further includes: a first water branch, one end of which is connected to the diversion inlet, and the other end of which is connected to the second diversion outlet; a second water branch, one end of which is connected to the diversion inlet, and the first heating device is provided on the second water branch; the first valve group includes a first inlet valve, a second inlet valve, and a diversion valve, wherein the first inlet valve is located on the first water branch, the second inlet valve is located on the second water branch, and the diversion valve is located downstream of the first heating device; wherein the diversion valve has two outlets to connect to a third water branch and a fourth water branch respectively, the third water branch is connected to the second diversion outlet, and the fourth water branch is connected to the first diversion outlet.

[0008] As an optional implementation, the diversion box is further provided with a first temperature detection device, which is located downstream of the first heating device to detect the temperature of the water flowing out of the first heating device. The first temperature detection device is communicatively connected to the controller, so that the controller controls the first heating device to stop heating or continue heating according to the temperature signal detected by the first temperature detection device.

[0009] The beneficial effect is that the first temperature detection device can detect the temperature of the water flowing out of the first heating device. The controller can control the first heating device to heat or stop heating based on the water temperature detected by the first temperature detection device. Specifically, when the first temperature detection device detects a water temperature lower than a preset temperature of 100°C, for example, a preset temperature of 60°C, the controller can control the first heating device to stop heating, so that the first heating device 111 only raises the water temperature without boiling the water.

[0010] As an optional implementation, a flow control device is provided on the second water branch, and the flow control device is communicatively connected to the controller so that the controller controls the flow control device to adjust the flow rate of water entering the first heating device.

[0011] As an optional implementation, the first water branch and the second water branch are respectively provided with one-way valves, so that the water flows to the first diversion outlet and the second diversion outlet respectively.

[0012] As an optional implementation, the second heating device has a heating inlet and a heating outlet. The heating inlet is connected to the second diversion outlet. The heating outlet is provided with a second valve group for discharging water or introducing hot water into the heat exchanger. The second valve group is provided with a reversing inlet, a first reversing outlet, and a second reversing outlet. The reversing inlet is connected to the heating outlet. The first reversing outlet is adapted to connect to a water outlet. The heat exchanger has a first heat exchange inlet, a first heat exchange outlet, a second heat exchange inlet, and a second heat exchange outlet. The first heat exchange inlet is connected to the second reversing outlet. The first heat exchange outlet is adapted to provide boiled water after heat exchange. The second heat exchange inlet is connected to the second diversion outlet, and the second heat exchange outlet is connected to the heating inlet.

[0013] As an optional implementation, the hot water faucet further includes a third temperature detection device, which is located at the heating outlet. The third temperature detection device is adapted to detect the water temperature flowing out of the heating outlet and send the temperature to the controller. The controller is adapted to control the heating temperature of the second heating device according to the temperature information sent by the third temperature detection device.

[0014] As an optional implementation, the second valve group is a directional valve or two check valves.

[0015] As an optional implementation, both the first heating device and the second heating device are heating tubes.

[0016] On the other hand, the present invention also provides a water purifier, the water purifier comprising: a complete system having a purified water output port; and a hot water faucet as described in any one of the claims, wherein the hot water faucet's branch inlet is connected to the purified water output port. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a diversion box for a hot water faucet according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of a hot water tap according to an embodiment of the present invention;

[0020] Figure 3This is a control block diagram of a hot water tap according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of a hot water tap according to an embodiment of the present invention, which includes only a heat exchanger and a second heating device.

[0022] Figure 5 This is a schematic diagram of a water purifier according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the overall system of a water purifier according to an embodiment of the present invention;

[0024] Explanation of reference numerals in the attached figures:

[0025] 100. Hot water tap;

[0026] 110. Shunt box;

[0027] 1101. Diversion inlet;

[0028] 1102. First branch outlet;

[0029] 1103. Second diversion outlet;

[0030] 111. First heating device;

[0031] 112. First valve group;

[0032] 1121. First inlet valve;

[0033] 1122. Second inlet valve;

[0034] 1123. Diverter valve;

[0035] 1124. First check valve;

[0036] 1125. Second check valve;

[0037] 113. First water branch road;

[0038] 114. Second water branch road;

[0039] 115. Third Water Branch Road;

[0040] 116. Fourth Water Branch Road;

[0041] 117. First temperature detection device;

[0042] 118. Flow control device;

[0043] 120. Second heating device;

[0044] 121. Heating inlet;

[0045] 122. Heating outlet;

[0046] 130. Heat exchanger;

[0047] 131. First heat exchanger inlet;

[0048] 132. First heat exchange outlet;

[0049] 133. Second heat exchanger inlet;

[0050] 134. Second heat exchange outlet;

[0051] 140. Second valve group;

[0052] 141. Reversing water inlet;

[0053] 142. First reversing outlet;

[0054] 143. Second reversing outlet;

[0055] 150. Second temperature detection device;

[0056] 160. Water spout;

[0057] 170. Third temperature detection device;

[0058] 180. Hot water pipes;

[0059] 190. Controller;

[0060] 200. Complete system;

[0061] 201. Raw water inlet pipeline;

[0062] 202. First water supply pipeline;

[0063] 203. Second water supply pipeline;

[0064] 204. Pure water outlet pipeline;

[0065] 205. First clean water branch pipeline;

[0066] 210. Composite filter element;

[0067] 211. Pre-filter PAC element;

[0068] 212. Post-activated carbon filter element;

[0069] 220. Deep-processed filter element;

[0070] 250. Flow control pump;

[0071] 260. Pressure switch;

[0072] 270. Pressure reducing valve. Detailed Implementation

[0073] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0074] Water purifiers typically include pre-treatment filters, precision filters, and post-treatment filters. The pre-treatment filter pre-treats the incoming tap water. Activated carbon in the pre-treatment filter can effectively remove residual chlorine and other oxidizing substances that can damage the precision RO filter.

[0075] The adsorption of pollutants by activated carbon mainly includes physical adsorption and chemical adsorption. Physical adsorption is the primary adsorption process in activated carbon; changing conditions can disrupt the adsorption equilibrium, causing the adsorbate to desorb. Chemical adsorption is irreversible and essentially involves the formation of stable complexes between the functional groups on the surface of activated carbon and pollutant molecules. In the specific process of activated carbon adsorbing pollutants, activated carbon initially relies primarily on physical adsorption. Once physical adsorption approaches saturation, chemical adsorption intervenes, leading to complete inactivation.

[0076] Given the above-mentioned characteristics of activated carbon adsorption, if a way can be found to break the balance between activated carbon and adsorbate, reverse the physical adsorption process, and slow down the chemical adsorption process, then the activated carbon can be regenerated, its adsorption capacity restored, and its service life extended.

[0077] Methods to extend the life of activated carbon filter cartridges through regeneration mainly include physical methods such as high temperature, steam or vibration, and chemical reagents. For example, activated carbon fibers can be regenerated through high-temperature steam; however, this method is suitable for large-scale purification equipment in the petrochemical and environmental protection industries, with high process requirements, and is not suitable for household water purifiers. The activated carbon can be regenerated by unclogging its gaps, restoring its adsorption capacity and enabling a self-regeneration process; however, this method involves complex equipment, requires the addition of flocculants, and cannot guarantee the safety of the product or drinking water. Filter cartridge regeneration can also be achieved by soaking in chlorine dioxide followed by high-temperature steam; however, the introduction of the chemical chlorine dioxide cannot guarantee water quality safety. Electrochemical methods can also be used, where pollutants adsorbed in the activated carbon are decomposed and reduced under electrolytic conditions, leading to desorption and regeneration of the activated carbon; however, the precipitation of metal substances in the solution cannot guarantee the safety of drinking water and increases energy consumption.

[0078] The following is combined Figures 1 to 6 The following describes embodiments of the present invention.

[0079] like Figure 1 and Figure 4 As shown, according to an embodiment of the present invention, a hot water faucet 100 is provided. The hot water faucet 100 includes: a diversion box 110, a heat exchanger 130, a second heating device 120, and a controller 190. The diversion box 110 has a diversion inlet 1101, a first diversion outlet 1102, and a second diversion outlet 1103. The diversion box 110 is provided with a first heating device 111 and a first valve group 112. The diversion inlet 1101 is adapted to allow purified water to flow in. The second heating device 120 is adapted to heat the water flowing out from the second diversion outlet 1103. The heat exchanger 130 is adapted to perform heat exchange between the water flowing out from the second diversion outlet 1103 and the hot water flowing out after being heated by the second heating device 120. After the water is replaced, the controller 190 is adapted to control the first valve group 112 so that the purified water enters the second heating device 120 from the first branch outlet 1102 and then flows out as room temperature water; or the controller 190 controls the first valve group 112 and controls the first heating device 111 and the second heating device 120 to heat the water so that the hot water heated by the first heating device 111 enters the second heating device 120 from the first branch outlet 1102 and is heated to produce boiling water; or the controller 190 controls the first valve group 112 so that the purified water enters the heat exchanger 130 from the second branch outlet 1103 and enters the second heating device 120 from the first branch outlet 1102 for heating, so that the purified water is produced as cooked water after heat exchange in the heat exchanger 130.

[0080] The aforementioned diversion box 110 is used to divert the purified water entering from the diversion inlet 1101 so that the diverted water flows out from the first diversion outlet 1102 and / or the second diversion outlet 1103.

[0081] The controller 190 can control the first valve group 112 so that the purified water entering from the diversion inlet 1101 flows out from the second diversion outlet 1103 and enters the outlet 160 through the second heating device 120. The second heating device 120 does not heat the water, so that the outlet 160 can discharge purified water at room temperature.

[0082] The controller 190 can also control the first valve group 112, the first heating device 111, and the second heating device 120, so that the purified water entering from the diversion inlet 1101 enters the first heating device 111 for preheating. After being preheated by the first heating device 111, the temperature of the purified water increases, and then it enters the second heating device 120 for reheating, so that boiling hot water can be dispensed from the outlet 160.

[0083] Alternatively, the controller 190 can also control the first valve group 112, so that the purified water entering from the diversion inlet 1101 flows out from the first diversion outlet 1102 and the second diversion outlet 1103 respectively, and control the first heating device 111 not to heat the purified water flowing through it. The purified water flowing out from the second diversion outlet 1103 enters the heat exchanger 130, while the purified water flowing out from the first diversion outlet 1102 enters the second heating device 120 for heating and then enters the heat exchanger 130 for heat exchange, so that the water flowing out of the heat exchanger is cooled and becomes boiled water and flows to the water outlet 160 for direct drinking.

[0084] This can be understood as follows: by diverting water through the diversion box 110 and controlling the first valve group 112, the first heating device 111, and the second heating device 120 through the controller 190, the purified water entering the diversion box 110 can ultimately become room temperature water, hot water, or boiled water, thereby meeting the user's different water usage needs. Moreover, the use of room temperature water, hot water, or boiled water can be done independently, avoiding the problem of residual heat raising the water temperature when using room temperature water. Furthermore, the residual heat from the first heating device 111 is used to heat the water before it enters the second heating device 120, improving the efficiency of using boiled water, reducing waiting time, and improving the user experience.

[0085] Furthermore, the diversion box 110 is also provided with: a first water branch 113, a second water branch 114, a third water branch 115, and a fourth water branch 116. One end of the first water branch 113 is connected to the diversion inlet 1101, and the other end of the first water branch 113 is connected to the second diversion outlet 1103. One end of the second water branch 114 is connected to the diversion inlet 1101, and a first heating device 111 is provided on the second water branch 114. The first valve group 112 includes a first inlet valve 1121. The system includes a second inlet valve 1122 and a diversion valve 1123. The first inlet valve 1121 is located in the first water branch 113, the second inlet valve 1122 is located in the second water branch 114, and the diversion valve 1123 is located downstream of the first heating device 111. The diversion valve 1123 has two outlets to connect to the third water branch 115 and the fourth water branch 116, respectively. The third water branch 115 is connected to the second diversion outlet 1103, and the fourth water branch 116 is connected to the first diversion outlet 1102.

[0086] This can be understood as follows: the first water branch 113 and the second water branch 114 share a common diversion inlet 1101. The first water branch 113 is equipped with a first inlet valve 1121, which is a solenoid valve. The second water branch 114 is equipped with a second inlet valve 1122, which is also a solenoid valve. When the first inlet valve 1121 is opened, the first water branch 113 flows, and purified water enters the first diversion outlet 1102 from the diversion inlet 1101. When the second inlet valve 1122 is opened, purified water enters the first heating device 111 from the diversion inlet 1101 and then enters the diversion valve 1123. The diversion valve 1123 can be switched to connect with the third water branch 115, allowing water to enter the second diversion outlet 1103. Alternatively, the position of the diversion valve 1123 can be switched to connect with the fourth water branch 116, so that the water enters the first water branch 113 and flows out from the second diversion outlet 1103.

[0087] By setting a first water branch 113 and a second water branch 114 in the diversion box 110, and setting a diversion valve 1123 on the second water branch 114, the diversion of water in the diversion box 110 is realized.

[0088] In another embodiment, a first temperature detection device 117 is also provided in the diversion box 110. The first temperature detection device 117 is located downstream of the first heating device 111 to detect the temperature of the water flowing out of the first heating device 111. The first temperature detection device 117 is communicatively connected to the controller 190, so that the controller 190 controls the first heating device to stop heating or continue heating according to the temperature signal detected by the first temperature detection device 117.

[0089] This can be understood as the first temperature detection device 117 being a temperature sensor, positioned downstream of the first heating device 111, allowing it to detect the temperature of the water flowing out of the first heating device 111. The controller 190 can control the first heating device 111 to heat or stop heating based on the water temperature detected by the temperature sensor. Specifically, when the temperature sensor detects a water temperature of 60°C, the controller 190 can control the first heating device 111 to stop heating, ensuring that the first heating device 111 only raises the water temperature without boiling it.

[0090] In another embodiment, such as Figure 4 As shown, a flow control device 118 is provided on the second water branch 114. The flow control device 118 is communicatively connected to the controller 190 so that the controller 190 controls the flow control device 118 to adjust the flow rate of the water entering the first heating device 111.

[0091] This can be understood as the control device being a flow pump, which can control the flow rate of water entering the inlet of the first heating device 111 via the flow control device 118. The first heating device 111 is a heating tube, which is connected in series to the second water branch 114.

[0092] Specifically, the first water branch 113 and the second water branch 114 are respectively equipped with one-way valves, so that the water flows to the first diversion outlet 1102 and the second diversion outlet 1103 respectively.

[0093] This can be understood as follows: the first water branch 113 is connected in series with a first one-way valve 1124, allowing water to flow from the branch inlet 1101 to the first branch outlet 1102. The first one-way valve 1124 prevents water heated by the first heating device 111 from flowing back into the branch inlet 1101. Similarly, the second water branch 114 is connected in series with a second one-way valve 1125, allowing water to flow from the branch inlet 1101 to the second branch outlet 1103. The second one-way valve 1125 prevents water flowing from the second heat exchange outlet 134 of the heat exchanger 130 from flowing back into the second branch outlet 1103.

[0094] In another embodiment, such as Figure 3 As shown, the second heating device 120 has a heating inlet 121 and a heating outlet 122. The heating inlet 121 is connected to the second diversion outlet 1103. The heating outlet 122 is equipped with a second valve group 140 for discharging water or supplying hot water to the heat exchanger 130. The second valve group 140 is equipped with a reversing inlet 141, a first reversing outlet 142, and a second reversing outlet 143. The reversing inlet 141 is connected to the heating outlet 122, and the first reversing outlet 142 is connected to the second diversion outlet 143. 42 is suitable for connecting to the water outlet 160. The heat exchanger 130 has a first heat exchange inlet 131, a first heat exchange outlet 132, a second heat exchange inlet 133, and a second heat exchange outlet 134. The first heat exchange inlet 131 is connected to the second reversing outlet 143. The first heat exchange outlet 132 is suitable for the boiled water after heat exchange. The second heat exchange inlet 133 is connected to the second diversion outlet 1103. The second heat exchange outlet 134 is connected to the heating inlet 121.

[0095] The heat exchanger 130 mentioned above includes an inner tube and an outer tube. During heat exchange, hot water flows through the inner tube and room temperature water flows through the outer tube. The room temperature water absorbs the heat from the hot water, thereby cooling the hot water to produce cooked water that can be drunk directly.

[0096] The second heating device 120 has a circular pipe structure. One end of the second heating device 120 is a heating inlet 121, and the other end is a heating outlet 122. When water enters the second heating device 120 through the heating inlet 121, if the second heating device 120 is turned on, it heats the incoming water, and the heated hot water flows out through the heating outlet 122.

[0097] This can be understood as follows: the heating inlet 121 is connected to the first branch outlet 1102, that is, the first branch water path can be connected to the heating inlet 121 of the second heating device 120, so that the water entering the second heating device 120 is room temperature water. In this state, the second heating device 120 does not start heating, so the water entering the outlet 160 is room temperature water.

[0098] The fourth water branch 116 can also be connected to the heating inlet 121 of the second heating device 120, so that the hot water heated by the first heating device 111 can enter the second heating device 120 for further heating, and the water entering the outlet 160 is boiling water.

[0099] The second valve assembly 140 is located at the heating outlet 122. Water flowing out of the heating outlet 122 passes through the reversing inlet 141 and then flows to either the first reversing outlet 142 or the second reversing outlet 143. Hot water flowing out of the first reversing outlet 142 can flow directly into the outlet 160, while hot water flowing out of the second reversing outlet 143 enters the heat exchanger for heat exchange.

[0100] The hot water faucet 100 also includes a third temperature detection device 170, which is located at the heating outlet 122. The third temperature detection device 170 is adapted to detect the water temperature flowing out of the heating outlet 122 and send the temperature to the controller 190. The controller 190 is adapted to control the heating temperature of the second heating device 120 according to the temperature information sent by the third temperature detection device 170.

[0101] The aforementioned third temperature detection device 170 can be a temperature sensor, which is installed on the pipeline connecting the heating outlet 122 and the reversing inlet, so that the temperature sensor can detect the temperature of the hot water flowing out of the heating outlet 122. The controller 190 can control the second heating device 120 according to the temperature information to adjust the temperature of the water that the second heating device 120 can heat.

[0102] This can be understood as follows: the hot water faucet 100 also includes a hot water pipe. One end of the hot water pipe is connected to the outlet 160. A second temperature detection device 150 is installed near the outlet 160 in the hot water pipe. The second temperature detection device 150 is suitable for detecting the temperature of the water flowing out to the outlet 160, making it convenient for users to use boiling hot water. One end of the hot water pipe is connected to the first heat exchange inlet 131, and the second valve assembly 140 is connected in series with the hot water pipe. After the hot water enters the heat exchanger through the hot water pipe, the water temperature drops, forming cooked water. The cooked water enters the cooked water pipe 180 through the first heat exchange outlet 132 and then exits from the outlet 160. One end of the cooked water pipe 180 is connected to the first heat exchange outlet 132, and the other end of the cooked water pipe 180 is connected to the downstream of the second reversing outlet 143.

[0103] The second valve group 140 mentioned above is a directional valve or two check valves.

[0104] Both the first heating device 111 and the second heating device 120 are heating tubes.

[0105] According to an embodiment of the present invention, on the other hand, such as Figure 5 As shown, a water purifier is also provided, which includes: a complete system and a hot water faucet 100. The complete system 200 has a purified water output port, and the diversion inlet 1101 of the hot water faucet 100 is connected to the purified water output port.

[0106] This can be understood as the hot water tap 100 needing a water path to connect with the whole system 200.

[0107] like Figure 6 As shown, the complete system 200 includes: a composite filter element 210, a pure water outlet pipe 204, a water outlet branch pipe, and a second purified water branch pipe. A pressure switch 260 is provided on the pure water outlet pipe 204, which can detect the water outlet pressure of the pure water outlet pipe 204. The composite filter element 210 is provided with a pure water outlet. One end of the pure water outlet pipe 204 is connected to the pure water outlet. One end of the first purified water branch pipe 205 is connected to the pure water outlet, and the other end of the first purified water branch pipe 205 is connected to the pure water outlet. One end of the second purified water branch pipe is connected to the pure water outlet, and the other end of the second purified water branch pipe is connected to the pure water outlet.

[0108] The aforementioned complete system 200 also includes a raw water inlet pipe 201, the inlet end of which is connected to tap water. A pressure reducing valve 270 is provided on the raw water inlet pipe 201, and the tap water after pressure reduction by the pressure reducing valve 270 enters the composite filter element 210.

[0109] The aforementioned complete system 200 also includes a first water supply pipeline 202, a second water supply pipeline 203, a first main purified water pipeline, a first branch purified water pipeline 205, a second branch purified water pipeline, and a second main purified water pipeline.

[0110] The composite filter element 210 includes a pre-filter PAC filter element 211 and a post-filter activated carbon filter element 212. The inlet of the pre-filter PAC filter element 211 is connected to the raw water inlet pipe 201, so that tap water enters the pre-filter PAC filter element 211 through the raw water inlet pipe 201 for filtration.

[0111] One end of the first water purification pipe 202 is connected to the outlet of the pre-filter PAC cartridge 211, allowing water filtered by the pre-filter PAC cartridge 211 to enter the first water purification pipe 202. The other end of the first water purification pipe 202 is connected to the inlet of the advanced treatment filter cartridge 220, allowing water filtered by the pre-filter PAC cartridge 211 to enter the advanced treatment filter cartridge 220 for further treatment. The advanced treatment filter cartridge 220 is an RO membrane filter.

[0112] The first water supply pipeline 202 is equipped with an inlet solenoid valve, a flow meter, and a pressure stabilizing pump.

[0113] One end of the second water supply pipe 203 is connected to the outlet of the deep treatment filter element 220, and the other end of the second water supply pipe 203 is connected to the inlet of the post-activated carbon filter element 212, so that the water treated by the deep treatment filter element 220 enters the post-activated carbon filter element 212 for further treatment to complete the preparation of purified water.

[0114] The deep treatment filter element 220 also has a wastewater outlet, which is connected to a wastewater outlet pipe, and the wastewater outlet pipe is equipped with a wastewater outlet solenoid valve.

[0115] The wastewater outlet pipe is connected to the wastewater branch pipe, and the first water supply pipe of the wastewater branch pipe is 202.

[0116] Wastewater branch pipes are equipped with wastewater return solenoid valves, throttle valves, and check valves.

[0117] The first water supply pipeline 202 and the second water supply pipeline 203 are also connected to a return pipeline. One end of the return pipeline is connected to the first water supply pipeline 202, and the other end of the return pipeline is connected to the second water supply pipeline 203. The return pipeline is equipped with a return solenoid valve and a one-way valve.

[0118] One end of the first main water purification pipeline is connected to the outlet of the post-activated carbon filter cartridge 212 so that the purified water that has been prepared can enter the first main water purification pipeline.

[0119] A check valve is installed on the first main water purification pipeline.

[0120] The water purifier includes: water production pipeline, flushing pipeline, control valve group and hot water generation device. Both the pre-carbon filter and the post-carbon filter include carbon water purification unit. The water flows in the forward direction during the water production process.

[0121] The aforementioned hot water faucet 100 can be used in a water purifier, and the flushing pipes are used to flush the pre- and post-activated carbon filters. The temperature of the hot water disrupts the balance between the activated carbon and the adsorbents, causing the pollutants to desorb and thus allowing the activated carbon to regain some of its adsorption capacity and regenerate. Specifically, the temperature is between ambient temperature and the boiling point of water, making the hot water at this temperature not only effective for flushing but also safe and convenient.

[0122] Specifically, the hot water generating device includes: a heating tank having a pure water inlet and a hot water outlet, the pure water inlet being connected to the outlet of the pure water cylinder, and the hot water outlet being connected to the flushing pipeline; or a heating device suitable for heating the pure water cylinder so that hot water enters the flushing pipeline from the outlet of the pure water cylinder.

[0123] During normal water production, water entering the filter cartridge through the inlet is considered forward flow, and water flowing out of the filter cartridge through the outlet is considered forward flow. Conversely, water entering the filter cartridge through the outlet is considered reverse flow, and water flowing out of the filter cartridge through the inlet is considered reverse flow.

[0124] The flushing pipeline can perform reverse flushing, allowing part of the water production pipeline to exist as part of the flushing pipeline. That is, the water production pipeline between the outlet of the post-carbon filter and the inlet of the pure water tank can be used as part of the flushing pipeline, so that the pure water stored in the pure water tank can be used as cooling water after hot water flushing and enter the flushing pipeline.

[0125] Once normal water production is complete, the control valve group shuts off the water production pipeline. The heating device heats the water in the pure water tank, allowing hot water to enter the outlet of the post-carbon filter cartridge. This allows for backwashing of the post-carbon filter cartridge, effectively removing contaminants and regenerating it. Then, hot water flows from the inlet of the post-carbon filter cartridge to the outlet of the pre-carbon filter cartridge, backwashing it. This process also effectively removes contaminants from the pre-carbon filter cartridge, regenerating it.

[0126] This can be understood as follows: the pre-filter is located upstream of the water purification pipeline, and the post-filter is located downstream. Therefore, the post-filter contains fewer impurities than the pre-filter. Hot water first rinses the post-filter before rinsing the pre-filter. Compared to rinsing the pre-filter first and then the post-filter, this method regenerates the post-filter without introducing more impurities into the already low-impact filter during rinsing. Therefore, it improves the regeneration effect and efficiency of both the pre- and post-filters.

[0127] Backwashing of the post-carbon filter and the pre-carbon filter is more conducive to the removal of pollutants.

[0128] Specifically, such as Figure 2 As shown, the water purifier also includes: a pretreatment filter cartridge and a reverse osmosis membrane filter cartridge. The reverse osmosis membrane filter cartridge is a non-high-temperature resistant filter cartridge. The pretreatment filter cartridge is connected in series on the water production pipeline, and the inlet of the pretreatment filter cartridge can be connected to the water inlet. The outlet of the pretreatment filter cartridge and the inlet of the pre-carbon filter cartridge are connected to the water production pipeline in sequence. The non-high-temperature resistant filter cartridge is connected in series on the water production pipeline, and the outlet of the pre-carbon filter cartridge, the inlet of the non-high-temperature resistant filter cartridge, the outlet of the non-high-temperature resistant filter cartridge, and the inlet of the post-carbon filter cartridge are connected to the water production pipeline in sequence. Among them, the first inlet valve 1121 is located on the water production pipeline between the outlet of the pre-carbon filter cartridge and the inlet of the non-high-temperature resistant filter cartridge. The outlet of the pretreatment filter cartridge is connected to the pre-carbon filter cartridge.

[0129] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A hot water tap, characterized in that, include: The diversion box (110) has a diversion inlet (1101), a first diversion outlet (1102) and a second diversion outlet (1103). The diversion box (110) is equipped with a first heating device (111) and a first valve group (112). The diversion inlet (1101) is suitable for passing clean water in. The second heating device (120) is adapted to heat the water flowing out from the first branch outlet (1102); The heat exchanger (130) is adapted to produce cooked water by exchanging heat between the water flowing out from the second branch outlet (1103) and the hot water flowing out after being heated by the second heating device (120); The controller (190) is adapted to control the first valve group (112) so that purified water enters the second heating device (120) from the first diversion outlet (1102) and then flows out as room temperature water; or The controller (190) controls the first valve group (112) and the first heating device (111) and the second heating device (120) to heat the water, so that the hot water heated by the first heating device (111) enters the second heating device (120) from the first diversion outlet (1102) and is heated to produce boiling water; or The controller (190) controls the first valve group (112) to allow purified water to enter the heat exchanger (130) from the second branch outlet (1103), and to allow purified water to enter the second heating device (120) from the first branch outlet (1102) for heating, so that after heat exchange in the heat exchanger (130), it produces cooked water. The branch box (110) is also equipped with: The first water branch (113) is connected at one end to the diversion inlet (1101), and at the other end to the first diversion outlet (1102). The second water branch (114) is connected at one end to the diversion inlet (1101), and the first heating device (111) is provided on the second water branch (114). The first valve group (112) includes a first inlet valve (1121), a second inlet valve (1122), and a diversion valve (1123). The first inlet valve (1121) is located in the first water branch (113), the second inlet valve (1122) is located in the second water branch (114), and the diversion valve (1123) is located downstream of the first heating device (111). The diversion valve (1123) has two outlets to connect to the third water branch (115) and the fourth water branch (116) respectively. The third water branch (115) is connected to the second diversion outlet (1103), and the fourth water branch (116) is connected to the first diversion outlet (1102).

2. The hot water faucet according to claim 1, characterized in that, The diversion box (110) is also provided with a first temperature detection device (117). The first temperature detection device (117) is located downstream of the first heating device (111) to detect the temperature of the water flowing out of the first heating device (111). The first temperature detection device (117) is communicatively connected to the controller (190), so that the controller (190) controls the first heating device (111) to stop heating or continue heating according to the temperature signal detected by the first temperature detection device (117).

3. The hot water faucet according to claim 1, characterized in that, The second water branch (114) is provided with a flow control device (118), which is communicatively connected to the controller (190) so that the controller (190) controls the flow control device (118) to regulate the flow rate of water entering the first heating device (111).

4. The hot water faucet according to claim 1, characterized in that, The first water branch (113) and the second water branch (114) are also equipped with one-way valves, so that the water flows to the first diversion outlet (1102) and the second diversion outlet (1103) respectively.

5. The hot water faucet according to any one of claims 1 to 4, characterized in that, The second heating device (120) has a heating inlet (121) and a heating outlet (122). The heating inlet (121) is connected to the second diversion outlet (1103). The heating outlet (122) is equipped with a second valve group (140) to discharge water or to supply hot water to the heat exchanger (130). The second valve group (140) is equipped with a reversing inlet (141), a first reversing outlet (142), and a second reversing outlet (143). The reversing inlet (141) is connected to the heating outlet (122), and the first reversing outlet (142) is connected to the second diversion outlet (123). 142) Suitable for connecting to a water outlet (160), the heat exchanger (130) has a first heat exchange inlet (131), a first heat exchange outlet (132), a second heat exchange inlet (133) and a second heat exchange outlet (134), the first heat exchange inlet (131) is connected to the second diversion outlet (143), the first heat exchange outlet (132) is suitable for heated water after heat exchange, the second heat exchange inlet (133) is connected to the second diversion outlet (1103), and the second heat exchange outlet (134) is connected to the heating inlet (121).

6. The hot water faucet according to claim 5, characterized in that, The hot water tap (100) also includes a third temperature detection device (170), which is located at the heating outlet (122). The third temperature detection device (170) is adapted to detect the water temperature flowing out of the heating outlet (122) and send the temperature to the controller (190). The controller (190) is adapted to control the heating temperature of the second heating device (120) according to the temperature information sent by the third temperature detection device (170).

7. The hot water faucet according to claim 5, characterized in that, The second valve group (140) is a directional valve or two check valves.

8. The hot water faucet according to any one of claims 1 to 4, characterized in that, Both the first heating device (111) and the second heating device (120) are heating tubes.

9. A water purifier, characterized in that, The water purifier includes: The complete system (200) has a purified water output port; The hot water faucet (100) as described in claim 1 or 2, wherein the branch inlet (1101) of the hot water faucet (100) is connected to the purified water outlet.

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