Direct drinking machine

Abstract

The utility model provides a direct drinking machine. The direct drinking machine comprises a water tank, a first electromagnetic valve, a second electromagnetic valve, a first circulating pump, a first sterilizer, an electric heater, a heat exchanger, a controller and a hot water port, a first water inlet of the water tank is connected with a water outlet of the first circulating pump; a water inlet of the first circulating pump is connected with a water outlet of the first electromagnetic valve; one end of the first sterilizer is connected with a first water outlet of the water tank, and the other end of the first sterilizer is respectively connected with a water inlet of the first electromagnetic valve and a water inlet of the second electromagnetic valve; a water outlet of the second electromagnetic valve is connected with the hot water port; the electric heater and the heat exchanger are arranged in the water tank; the controller is in communication connection with the first electromagnetic valve, the second electromagnetic valve, the first circulating pump, the first sterilizer and the electric heater. The direct drinking machine is sterilized through a high temperature sterilizer, so that the safety of drinking water in the direct drinking machine can be ensured.

Description

Technical Field

[0001] This utility model relates to the field of drinking water equipment technology, and in particular to a direct drinking water machine. Background Technology

[0002] Water purifiers are becoming increasingly popular, with many models equipped with warm water dispensers. Current technology typically involves heating the water in the heating element to a set warm water temperature (45℃-55℃), then installing a sterilizer at the outlet to disinfect the water before providing it to the user. However, heating the water to this set temperature also creates an optimal environment for bacterial growth. In this condition, the number of bacteria multiplying in the water purifier can be staggering, reaching up to 10 to the 16th power. A sterilizer at the outlet alone is insufficient to completely eliminate these bacteria, leading to excessive bacteria counts in the drinking water and jeopardizing the user's health.

[0003] In addition, existing technologies also use hot water heat exchange technology to kill bacteria in the water purifier through high temperature. However, in existing technologies, the heat exchanger is left to stand for too long, during which bacteria multiply in large numbers, which can also lead to the total number of bacteria in the drinking water provided by the water purifier exceeding the standard, endangering the user's drinking water health. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defect of excessive total bacteria count in the drinking water provided by existing direct drinking machines, and to provide a direct drinking machine.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] This utility model provides a direct drinking water machine, which includes a water tank, a first solenoid valve, a second solenoid valve, a first circulation pump, a first sterilizer, an electric heater, a heat exchanger, a controller, and a hot water outlet;

[0007] The first inlet of the water tank is connected to the outlet of the first circulating pump;

[0008] The inlet of the first circulating pump is connected to the outlet of the first solenoid valve;

[0009] One end of the first sterilizer is connected to the first outlet of the water tank, and the other end is connected to the inlet of the first solenoid valve and the inlet of the second solenoid valve, respectively.

[0010] The outlet of the second solenoid valve is connected to the hot water outlet;

[0011] The electric heater and the heat exchanger are disposed inside the water tank;

[0012] The controller is communicatively connected to the first solenoid valve, the second solenoid valve, the first circulating pump, the first sterilizer, and the electric heater. Optionally, the water purifier further includes a radiator, a third solenoid valve, and a second circulating pump.

[0013] The inlet of the third solenoid valve is connected to the outlet of the heat exchanger;

[0014] The inlet of the radiator is connected to the outlet of the third solenoid valve;

[0015] The outlet of the radiator is connected to the inlet of the second circulation pump;

[0016] The outlet of the second circulating pump is connected to the inlet of the heat exchanger;

[0017] The controller is communicatively connected to the third solenoid valve and the second circulating pump, respectively.

[0018] Optionally, the water dispenser also includes a cooling fan;

[0019] The radiator is located at the air outlet of the cooling fan;

[0020] The controller is communicatively connected to the cooling fan.

[0021] Optionally, the water purifier further includes a water level detection device, a fourth solenoid valve, and a water inlet;

[0022] The controller is communicatively connected to the water level detection device and the fourth solenoid valve, respectively.

[0023] The water level detection device is installed inside the water tank and is used to measure the water level inside the water tank;

[0024] The inlet of the fourth solenoid valve is connected to the water inlet.

[0025] The outlet of the fourth solenoid valve is connected to the second inlet of the water tank.

[0026] Optionally, the water purifier also includes a filter assembly;

[0027] The filter element assembly is disposed between the water inlet and the water inlet of the fourth solenoid valve.

[0028] Optionally, the direct drinking water machine further includes a fifth solenoid valve, a one-way valve, and a wastewater outlet, and the filter assembly has a wastewater hole connected to the wastewater outlet;

[0029] The inlet of the fifth solenoid valve is connected to the wastewater hole;

[0030] The outlet of the fifth solenoid valve is connected to the inlet of the one-way valve.

[0031] The outlet of the one-way valve is connected to the wastewater outlet;

[0032] The fifth solenoid valve is communicatively connected to the controller.

[0033] Optionally, the water purifier further includes a second sterilizer;

[0034] The second sterilizer is disposed between the filter element assembly and the water inlet of the fourth solenoid valve.

[0035] Optionally, the water dispenser further includes a first temperature detection device;

[0036] The first temperature detection device is communicatively connected to the controller;

[0037] The first temperature detection device is installed inside the water tank and is used to measure the first water temperature inside the water tank.

[0038] Optionally, the water dispenser further includes a second temperature detection device;

[0039] The second temperature detection device is communicatively connected to the controller;

[0040] The second temperature detection device is installed at the first outlet of the water tank and is used to measure the second water temperature at the first outlet of the water tank.

[0041] Optionally, the water tank is provided with a vent; the direct drinking water machine also includes a manual ball valve, a drain outlet, and a vent.

[0042] The exhaust hole and the exhaust port are connected by an exhaust pipe;

[0043] The inlet of the manual ball valve is connected to the second outlet of the water tank;

[0044] The outlet of the manual ball valve is connected to the drain outlet of the water purifier and the exhaust pipe, respectively.

[0045] Based on common knowledge in the field, the above optional conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0046] The positive and progressive effects of this utility model are as follows: Firstly, by installing an electric heater and a heat exchanger in the water tank, this utility model achieves high-temperature sterilization and subsequent cooling of the drinking water, ensuring drinking water safety while providing users with water at a suitable temperature. Secondly, a circulation loop is formed through a first solenoid valve and a first circulation pump, and a first sterilizer is installed at the water tank outlet and the circulation loop inlet. During the heat exchanger's settling process, i.e., the cooling of the high-temperature water, the first sterilizer can further sterilize the drinking water, ensuring the safety of the drinking water at the outlet of the water purifier. The circulation loop ensures that all drinking water in the water purifier is sterilized, thereby effectively reducing the number of bacteria in the water purifier and ensuring the safety of the drinking water. Attached Figure Description

[0047] Figure 1 The structural block diagram of the direct drinking water machine provided by this utility model.

[0048] Figure 2 This is a schematic diagram of the structure of a specific direct drinking water machine provided by this utility model. Detailed Implementation

[0049] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0050] This embodiment provides a direct drinking water machine for providing safe drinking water with the lowest possible bacterial count. For example... Figure 1 As shown, the direct drinking water machine 10 includes a water tank 11, a first solenoid valve 12, a second solenoid valve 13, a first circulation pump 14, a first sterilizer 15, an electric heater 16, a heat exchanger 17, a controller 18, and a hot water outlet 19.

[0051] The first inlet of the water tank 11 is connected to the outlet of the first circulating pump 14;

[0052] The inlet of the first circulating pump 14 is connected to the outlet of the first solenoid valve 12;

[0053] One end of the first sterilizer 15 is connected to the first outlet of the water tank 11, and the other end is connected to the inlet of the first solenoid valve 12 and the inlet of the second solenoid valve 13 respectively.

[0054] The outlet of the second solenoid valve 13 is connected to the hot water outlet 19;

[0055] The electric heater 16 and the heat exchanger 17 are disposed inside the water tank 11;

[0056] The controller 18 is communicatively connected to the first solenoid valve 12, the second solenoid valve 13, the first circulating pump 14, the first sterilizer 15, and the electric heater 16.

[0057] In this embodiment, the first sterilizer can be a flow-through LED sterilizer, and the heat exchanger can be a coil heat exchanger.

[0058] In this embodiment, the electric heater 16 and the heat exchanger 17 are disposed inside the water tank 11. The controller 18 can first control the electric heater 16 to operate, heating the water in the water tank 11 to a high temperature, for example, 95°C. Then, the heat exchanger 17 cools the hot water down to a warm water temperature, ensuring that the user can obtain drinking water at a suitable temperature at the hot water outlet 19. Specifically, a fluid (water) is injected into the heat exchanger 17 as a carrier to transfer heat from the water tank to the outside of the water tank. The fluid can be water, oil, chemical solution, air, nitrogen, hydrogen, etc.

[0059] In one specific implementation, the water purifier performs high-temperature disinfection of the water tank at a fixed time, for example, around 3:00 AM every day. When the preset time is reached, the electric heater in the water tank turns on until the water in the tank is heated to a preset temperature, which can be 95°C, and then heating stops. After heating stops, the heat exchanger lowers the water temperature in the tank to a system-preset temperature, which can be 45°C.

[0060] In this embodiment, the water tank, the first solenoid valve, the second solenoid valve, the first circulation pump, and the first sterilizer form a circulation loop. Drinking water flows out from the first outlet of the water tank, passes through the first sterilizer and the second solenoid valve, and can either flow out from the hot water outlet or flow back into the water tank through the first solenoid valve and the first circulation pump. This circulation loop ensures that the bacterial count at the water outlet of the drinking water machine is within acceptable limits, preventing bacterial growth at the outlet and thus guaranteeing drinking water safety.

[0061] In one specific implementation, when the water temperature in the water tank is heated to a preset temperature, such as 95°C, the first sterilizer, the first solenoid valve, and the first circulation pump are turned on, and the drinking water circulates in the circulation loop to achieve high-temperature sterilization of the drinking water in the circulation loop, ensuring the health and safety of all drinking water in the direct drinking machine.

[0062] In another specific implementation, when the hot water outlet of the water purifier remains unused for a preset period of time, such as 4 hours, bacteria can easily grow at the outlet. In this case, the water purifier's circulation loop is activated every 2 hours for a set duration, which can be customized, such as 5 minutes, 8 minutes, or 10 minutes. This prevents bacteria from multiplying excessively due to prolonged stagnant time, thus ensuring the safety of the drinking water.

[0063] In one optional embodiment, the water purifier further includes a radiator, a third solenoid valve, and a second circulation pump; the inlet of the third solenoid valve is connected to the outlet of the heat exchanger; the inlet of the radiator is connected to the outlet of the third solenoid valve; the outlet of the radiator is connected to the inlet of the second circulation pump; the outlet of the second circulation pump is connected to the inlet of the heat exchanger; and the controller is communicatively connected to the third solenoid valve and the second circulation pump respectively.

[0064] In this embodiment, the fluid flows out of the heat exchanger, through the third solenoid valve, the radiator, and the second circulation pump, and finally returns to the heat exchanger. The controller controls the third solenoid valve and the second circulation pump to open, thus connecting the heat exchanger and the radiator. The heat exchanger removes the heat energy from the hot water in the tank, and the radiator dissipates the heat energy into the environment, thereby increasing the rate at which the temperature of the hot water in the tank drops and ensuring that users can obtain drinking water at a suitable temperature in a timely manner.

[0065] In one optional embodiment, the water dispenser further includes a cooling fan; the radiator is disposed at the air outlet of the cooling fan; and the controller is communicatively connected to the cooling fan.

[0066] In this embodiment, the radiator is installed at the air outlet of the cooling fan. The controller controls the cooling fan to turn on, which can accelerate the radiator to dissipate heat into the environment and improve the efficiency of the heat exchanger in removing heat. This increases the speed at which the temperature of the hot water in the water tank drops, ensuring that users can obtain drinking water at a suitable temperature in a timely manner.

[0067] In one optional embodiment, the direct drinking water machine further includes a water level detection device, a fourth solenoid valve, and a water inlet; the controller is communicatively connected to the water level detection device and the fourth solenoid valve respectively; the water level detection device is disposed inside the water tank and is used to measure the water level in the water tank; the water inlet of the fourth solenoid valve is connected to the water inlet; the water outlet of the fourth solenoid valve is connected to the second water inlet of the water tank.

[0068] In this embodiment, the water level detection device measures the water level in the tank and sends the water level data to the controller. The controller then controls the opening and closing of the fourth solenoid valve based on the water level. When a low water level is detected, the controller opens the fourth solenoid valve, allowing water to flow from the inlet through the valve into the tank until the water level reaches a high level. When a high water level is detected, the controller closes the fourth solenoid valve. This ensures a normal water level in the tank and prevents the tank from running dry.

[0069] In one optional embodiment, the water purifier further includes a filter assembly; the filter assembly is disposed between the water inlet and the water inlet of the fourth solenoid valve.

[0070] In this embodiment, the filter assembly may include multiple filter elements, such as a CPP composite filter element, an NF filter element, and an MPF ​​post-composite filter element. Water flows from the inlet through the filter assembly and is filtered by each filter element, removing impurities, suspended solids, and microorganisms from the water, thereby improving water quality and ensuring water safety. This process not only improves water quality but also protects other equipment and prevents pipe blockage.

[0071] Specifically, solenoid valves, pumps, etc. can be installed between each filter element to control the water flow and cut off the water flow at any time. For example, if a filter element has a problem, the solenoid valves before and after it can be closed and the filter element can be disassembled for easy subsequent maintenance.

[0072] Specifically, a one-way valve is installed before the last filter element, allowing water to flow in only one direction within the filter element assembly, thereby ensuring filtration quality and improving filtration efficiency.

[0073] In one optional embodiment, the direct drinking water machine further includes a fifth solenoid valve, a one-way valve, and a wastewater outlet. The filter assembly has a wastewater hole connected to the wastewater outlet. The inlet of the fifth solenoid valve is connected to the wastewater hole. The outlet of the fifth solenoid valve is connected to the inlet of the one-way valve. The outlet of the one-way valve is connected to the wastewater outlet. The fifth solenoid valve is communicatively connected to the controller.

[0074] In this embodiment, wastewater is generated during the filtration process of the filter element assembly. This wastewater is discharged through the wastewater holes of the filter element assembly to the wastewater outlet of the drinking water dispenser. This improves filtration efficiency, protects the filter element, extends the equipment's lifespan, and reduces environmental impact. Simultaneously, a one-way valve prevents backflow of wastewater, ensuring the filtration quality of the filter element assembly.

[0075] In one optional embodiment, the water purifier further includes a second sterilizer; the second sterilizer is disposed between the filter assembly and the water inlet of the fourth solenoid valve.

[0076] In this embodiment, the second sterilizer is located between the filter element assembly and the inlet of the fourth solenoid valve. It can sterilize the filtered water flow, further eliminate potential microorganisms in the water flow, improve water quality, and ensure the safety of drinking water in the water tank.

[0077] In one optional embodiment, the water purifier further includes a first temperature detection device; the first temperature detection device is communicatively connected to the controller; the first temperature detection device is disposed inside the water tank and is used to measure the first water temperature inside the water tank.

[0078] In this embodiment, the first temperature detection device measures the first water temperature in the water tank and sends the first water temperature to the controller. The controller controls the electric heater according to the first water temperature to maintain the temperature of the drinking water in the water tank at the set temperature.

[0079] In one specific implementation, when the first temperature detection device measures that the first water temperature in the water tank is lower than the set value, the controller controls the electric heater to turn on; when the first temperature detection device measures that the first water temperature in the water tank reaches the set value, such as 95°C, the controller controls the electric heater to turn off, and at the same time controls the third solenoid valve, the second circulation pump and the cooling fan to turn on.

[0080] In one optional embodiment, the water purifier further includes a second temperature detection device; the second temperature detection device is communicatively connected to the controller; the second temperature detection device is located at the first water outlet of the water tank and is used to measure the second water temperature at the first water outlet of the water tank.

[0081] In this embodiment, the second temperature detection device measures the second water temperature at the first outlet of the water tank and sends the second water temperature to the controller. If the second water temperature is lower than the preset temperature, the controller controls the first solenoid valve, the first circulation pump, and the first sterilizer to open according to the second water temperature, forming a circulation loop until the second water temperature at the first outlet of the water tank measured by the second temperature detection device reaches the preset temperature, thereby ensuring that the water that comes out of the water dispenser when the user turns on the water purifier is warm water and that the first cup of water is not too cold.

[0082] In one optional embodiment, the water tank is provided with a vent; the direct drinking water machine also includes a manual ball valve, a drain outlet, and a vent; the vent and the vent are connected by a vent pipe; the inlet of the manual ball valve is connected to the second outlet of the water tank; the outlet of the manual ball valve is connected to the drain outlet of the direct drinking water machine and the vent pipe, respectively.

[0083] In this embodiment, the vent of the water tank and the exhaust port of the water purifier are connected by an exhaust pipe to maintain the air pressure inside the water tank consistent with the outside air pressure, preventing any obstruction to the water flow. The drinking water flows out from the second outlet of the water tank, passes through a manual ball valve, and enters the drain outlet. This pipe is also connected to the exhaust pipe, ensuring that the air pressure inside this pipe is consistent with the outside air pressure, preventing any water from failing to flow out.

[0084] In one specific implementation, before the water purifier starts working, the tank is emptied of water until the water level reaches the high level. At the same time, the manual ball valve is opened to allow all the drinking water in the tank to flow out, thereby cleaning the tank and ensuring the safety of the drinking water inside.

[0085] In one specific embodiment, a schematic diagram of the direct drinking water machine is shown below. Figure 2As shown, the system includes a hot water tank 21, a coil heat exchanger 22, a first circulation solenoid valve 23, a radiator 24, a heat exchange circulation pump 25, a fan 26, a first temperature probe 27, a high water level detection device 28, a medium water level detection device 29, a low water level detection device 30, a heater 31, a second flow-through LED sterilizer 32, a second temperature probe 33, a hot water solenoid valve 34, a second circulation solenoid valve 35, a circulation pump 36, a manual ball valve 37, a stainless steel water receiving box 38, a water replenishment solenoid valve 39, a first flow-through LED sterilizer 40, an MPF ​​antibacterial composite filter element 41, an NF filter element 42, a CPP composite filter element 43, a water inlet solenoid valve 44, a pump 45, a first one-way valve 46, a wastewater solenoid valve 47, a second one-way valve 48, a water inlet 49, a wastewater outlet 50, a drain outlet 51, a hot water outlet 52, and an exhaust outlet 53. In this example, hot water tank 21 corresponds to the aforementioned water tank, coil heat exchanger 22 corresponds to the aforementioned heat exchanger, first circulation solenoid valve 23 corresponds to the aforementioned third solenoid valve, heat exchange circulation pump 25 corresponds to the aforementioned second circulation pump, fan 26 corresponds to the aforementioned cooling fan, first temperature probe 27 corresponds to the aforementioned first temperature detection device, high water level detection device 28, medium water level detection device 29, and low water level detection device 30 correspond to the aforementioned water level detection device, heater 31 corresponds to the aforementioned electric heater, and second flow-through LED sterilizer 32 corresponds to the aforementioned first sterilizer. The second temperature probe 3... 3 corresponds to the second temperature detection device mentioned above; hot water solenoid valve 34 corresponds to the second solenoid valve; second circulation solenoid valve 35 corresponds to the first solenoid valve mentioned above; circulation pump 36 corresponds to the first circulation pump mentioned above; water replenishment solenoid valve 39 corresponds to the fourth solenoid valve mentioned above; first flow-through LED sterilizer 40 corresponds to the second sterilizer mentioned above; MPF antibacterial composite filter element 41, NF filter element 42 and CPP composite filter element 43 correspond to the filter element assembly mentioned above; wastewater solenoid valve 47 corresponds to the fifth solenoid valve mentioned above; second one-way valve 48 corresponds to the one-way valve mentioned above; and hot water outlet 52 corresponds to the hot water outlet mentioned above.

[0086] Water enters the drinking water machine through inlet 49, flowing through MPF antibacterial composite filter 41, NF filter 42, CPP composite filter 43, and the first flow-through LED sterilizer 40, completing the filtration and sterilization of the water. During this process, opening the inlet solenoid valve 44 and pump 45 controls the water flow from CPP composite filter 43 to NF filter 42; the first one-way valve 46 controls the water flow from NF filter 42 to MPF antibacterial composite filter 41; the filtered wastewater flows through wastewater solenoid valve 47 and the second one-way valve 48, flowing to the wastewater outlet 50 of the drinking water machine.

[0087] After filtration and sterilization, the water flows into the hot water tank 21 via the water replenishment solenoid valve 39. Inside the hot water tank 21, the controller controls the opening and closing of the heater 31 and the water replenishment solenoid valve 39 based on the water temperature and water level detected by the first temperature probe 27, the high water level detection device 28, the medium water level detection device 29, and the low water level detection device 30. When the water temperature in the hot water tank 21 is high, the controller also controls the first circulation solenoid valve 23, the heat exchange circulation pump 25, and the fan 26 to accelerate the heat exchange of the coil heat exchanger 22, so that the water temperature in the hot water tank 21 drops rapidly to the set temperature, such as 45°C, thereby sterilizing the drinking water in the tank at high temperature and ensuring that users can obtain drinking water at a suitable temperature.

[0088] On the one hand, drinking water flows out from the first outlet of the hot water tank 21, passes through the second flow-through LED sterilizer 32 and the hot water solenoid valve 34, and flows out from the hot water outlet 52; on the other hand, drinking water flows out from the first outlet of the hot water tank 21, passes through the second flow-through LED sterilizer 32, flows into the second circulation solenoid valve 35, and flows back into the hot water tank 21 via the circulation pump 36. This circulation loop can heat and sterilize the drinking water that has already flowed out from the first outlet of the hot water tank 21 in the water purifier, ensuring the safety of the drinking water flowing out from the hot water outlet 52 while preventing the first cup of water flowing out from the hot water outlet 52 from being cold water.

[0089] In addition, drinking water can also flow out from the second outlet of the hot water tank 21, through the manual ball valve 37 and the stainless steel water receiving box 38, and out from the drain outlet 51 of the water purifier. This pipeline is connected to the exhaust pipe where the exhaust outlet 53 is located, which can maintain the same air pressure inside and outside the water tank and prevent drinking water from not flowing out.

[0090] The circulation pump 36 can have a flow rate of 2L / min, and the water tank can have a volume of 10-100L.

[0091] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A direct drinking water machine, characterized in that, The direct drinking water machine includes a water tank, a first solenoid valve, a second solenoid valve, a first circulation pump, a first sterilizer, an electric heater, a heat exchanger, a controller, and a hot water outlet; The first inlet of the water tank is connected to the outlet of the first circulating pump; The inlet of the first circulating pump is connected to the outlet of the first solenoid valve; One end of the first sterilizer is connected to the first outlet of the water tank, and the other end is connected to the inlet of the first solenoid valve and the inlet of the second solenoid valve, respectively. The outlet of the second solenoid valve is connected to the hot water outlet; The electric heater and the heat exchanger are disposed inside the water tank; The controller is communicatively connected to the first solenoid valve, the second solenoid valve, the first circulating pump, the first sterilizer, and the electric heater.

2. The direct drinking water machine as described in claim 1, characterized in that, The direct drinking water machine also includes a radiator, a third solenoid valve, and a second circulation pump; The inlet of the third solenoid valve is connected to the outlet of the heat exchanger; The inlet of the radiator is connected to the outlet of the third solenoid valve; The outlet of the radiator is connected to the inlet of the second circulation pump; The outlet of the second circulating pump is connected to the inlet of the heat exchanger; The controller is communicatively connected to the third solenoid valve and the second circulating pump, respectively.

3. The direct drinking water machine as described in claim 2, characterized in that, The water dispenser also includes a cooling fan; The radiator is located at the air outlet of the cooling fan; The controller is communicatively connected to the cooling fan.

4. The direct drinking water machine as described in claim 1, characterized in that, The direct drinking water machine also includes a water level detection device, a fourth solenoid valve, and a water inlet; The controller is communicatively connected to the water level detection device and the fourth solenoid valve, respectively. The water level detection device is installed inside the water tank and is used to measure the water level inside the water tank; The inlet of the fourth solenoid valve is connected to the water inlet. The outlet of the fourth solenoid valve is connected to the second inlet of the water tank.

5. The direct drinking water machine as described in claim 4, characterized in that, The direct drinking water machine also includes a filter assembly; The filter element assembly is disposed between the water inlet and the water inlet of the fourth solenoid valve.

6. The direct drinking water machine as described in claim 5, characterized in that, The direct drinking water machine also includes a fifth solenoid valve, a one-way valve, and a wastewater outlet, and the filter element assembly has a wastewater hole connected to the wastewater outlet; The inlet of the fifth solenoid valve is connected to the wastewater hole; The outlet of the fifth solenoid valve is connected to the inlet of the one-way valve. The outlet of the one-way valve is connected to the wastewater outlet; The fifth solenoid valve is communicatively connected to the controller.

7. The direct drinking water machine as described in claim 5, characterized in that, The direct drinking water machine also includes a second sterilizer; The second sterilizer is disposed between the filter element assembly and the water inlet of the fourth solenoid valve.

8. The direct drinking water machine as described in claim 1, characterized in that, The direct drinking water machine also includes a first temperature detection device; The first temperature detection device is communicatively connected to the controller; The first temperature detection device is installed inside the water tank and is used to measure the first water temperature inside the water tank.

9. The direct drinking water machine as described in claim 1, characterized in that, The direct drinking water machine also includes a second temperature detection device; The second temperature detection device is communicatively connected to the controller; The second temperature detection device is installed at the first outlet of the water tank and is used to measure the second water temperature at the first outlet of the water tank.

10. The direct drinking water machine as described in any one of claims 1-9, characterized in that, The water tank is equipped with a vent; the direct drinking water machine also includes a manual ball valve, a drain outlet, and a vent. The exhaust hole and the exhaust port are connected by an exhaust pipe; The inlet of the manual ball valve is connected to the second outlet of the water tank; The outlet of the manual ball valve is connected to the drain outlet of the water purifier and the exhaust pipe, respectively.

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