A pressure control system of a commercial water purifier and a water purifier comprising the same

Abstract

The utility model relates to a kind of commercial water purifier pressure control system and water purifier comprising it, including hot tank, first flow path component, second flow path component, third flow path component, pressure monitoring module, control mainboard;First flow path component one end is connected on the outlet of hot tank, other end is connected with hot water water taking point, for supplying hot water;Pressure monitoring module is set on first flow path component, to monitor the pressure in hot tank;Second flow path component one end is connected with first flow path component, other end is communicated with waste water mouth, for opening to carry out pressure relief in hot tank;Third flow path component one end is connected with water source, other end is connected with the import of hot tank, for opening to supply cold water to the pressurization in hot tank;Control mainboard and pressure monitoring module, second flow path component and third flow path component are electrically connected, to control the switch of second flow path component or third flow path component by the pressure value size obtained.The utility model can control the pressure inside hot tank.

Description

TECHNICAL FIELD

[0001] The utility model relates to water purifier technical field, in particular to a kind of commercial water purifier pressure control system and water purifier comprising it. BACKGROUND

[0002] To meet the high-density crowd centralized water supply demand of public occasions, most of the existing commercial water purifiers are equipped with two systems of purification and heating, which can purify and heat tap water. Among them, most commercial water purifiers heat by using a hot tank.

[0003] The applicant finds that the prior art at least has the following technical problems: this hot tank heating method has certain drawbacks, for example, the pressure generated after heating will continuously increase the internal pressure of the hot tank, causing pressure build-up. Long-term use in such an environment can cause the hot tank to leak, thereby affecting the normal operation of the equipment.

[0004] Therefore, there is an urgent need for a pressure control system that can automatically adjust the internal pressure of the hot tank. UTILITY MODEL CONTENT

[0005] The utility model provides a kind of commercial water purifier pressure control system and water purifier comprising it, for solving the technical problems that internal pressure cannot be adjusted when the above-mentioned water purifier heats, and pressure build-up leads to easy water leakage.

[0006] In the first aspect, the utility model provides a kind of commercial water purifier pressure control system, including hot tank, first flow path component, second flow path component, third flow path component, pressure monitoring module, control mainboard;Wherein:

[0007] One end of the first flow path component is connected to the outlet of the hot tank, and the other end is connected to a hot water pickup point for supplying hot water;

[0008] The pressure monitoring module is arranged on the first flow path component to monitor the pressure in the hot tank;

[0009] One end of the second flow path component is connected to the first flow path component, and the other end is communicated with a wastewater outlet for pressure relief in the hot tank when turned on;

[0010] One end of the third flow path component is connected to a water source, and the other end is connected to the inlet of the hot tank for supplying cold water to the hot tank to increase pressure when turned on;

[0011] The control mainboard is electrically connected to the pressure monitoring module, the second flow path component and the third flow path component to control the switch of the second flow path component or the third flow path component by the obtained pressure value.

[0012] In one embodiment, the first flow path assembly comprises a hot water pipe; and the pressure monitoring module is arranged on the hot water pipe.

[0013] In one embodiment, the pressure monitoring module is arranged close to the outlet of the hot tank.

[0014] In one embodiment, the second flow path assembly comprises a warm water pipe and a disinfection drainage solenoid valve; and the disinfection drainage solenoid valve is arranged at the end of the warm water pipe.

[0015] In one embodiment, the third flow path assembly comprises a cold water pipe and a hot tank water inlet solenoid valve; and the hot tank water inlet solenoid valve is arranged on the cold water pipe.

[0016] In a second aspect, the utility model provides a water purifier, comprising the pressure control system.

[0017] In one embodiment, the water purifier further comprises a heat exchanger, a front-end filtration module and a fourth flow path assembly; wherein:

[0018] The heat exchanger is arranged between the second flow path assembly and the third flow path assembly to perform heat exchange between cold and warm water.

[0019] The front-end filtration module is connected with the third flow path assembly to supply filtered cold water.

[0020] One end of the fourth flow path assembly is connected with the second flow path assembly, and the other end is connected with a warm water outlet.

[0021] In one embodiment, the fourth flow path assembly is connected to the inlet side of the disinfection drainage solenoid valve in the second flow path assembly.

[0022] In one embodiment, further comprising a temperature adjustment pipe arranged in parallel with the heat exchanger and connected with the second flow path assembly, and a temperature adjustment valve installed on the temperature adjustment pipe.

[0023] In one embodiment, further comprising a sterilization pipe arranged in parallel with the heat exchanger and connected with the third flow path assembly, and a sterilization water inlet solenoid valve installed on the sterilization pipe.

[0024] In one embodiment, the front-end filtration module comprises a PCB composite filter core, a reverse osmosis filter core and an activated carbon filter core arranged in sequence; further comprising a water inlet solenoid valve and a pressure stabilizing pump arranged between the PCB composite filter core and the reverse osmosis filter core.

[0025] Compared with the prior art, the utility model has the advantages that through setting pressure monitoring module on first flow path assembly connected with the heat tank outlet, pressure in the heat tank is monitored, then the switch of second flow path assembly is used to realize pressure relief of the heat tank, and the switch of third flow path assembly is used to realize water supplement start-stop in the heat tank, so as to realize water pressure supplement in the heat tank, can control the pressure in the heat tank, solve the problem of pressure holding and easy leakage existing in the traditional heat tank heating and the technical problem of being unable to judge whether someone takes water. BRIEF DESCRIPTION OF DRAWINGS

[0026] In the following, the utility model will be described in more detail based on the embodiments and with reference to the drawings.

[0027] Figure 1 It is the system composition diagram of the utility model commercial water purifier;

[0028] Figure 2 It is the water route diagram of the utility model commercial water purifier when taking hot water;

[0029] Figure 3 It is the water route diagram of the utility model commercial water purifier when taking warm water;

[0030] Figure 4 It is the water route diagram of the utility model commercial water purifier when taking warm water and hot water simultaneously;

[0031] Figure 5 It is the water route diagram of the utility model commercial water purifier when taking warm water and adjusting temperature;

[0032] Figure 6 It is the water route diagram of the utility model commercial water purifier when taking warm water and adjusting temperature;

[0033] Figure 7 It is the water route diagram of the utility model commercial water purifier when taking warm water and adjusting temperature;

[0034] Reference signs:

[0035] 1, PCB composite filter core;

[0036] 2, voltage stabilizing pump;

[0037] 3, reverse osmosis filter core;

[0038] 4, activated carbon filter core;

[0039] 5, pressure monitoring module;

[0040] 6, heat tank;

[0041] 7, heat exchanger;

[0042] 8, temperature adjusting valve;

[0043] 9, heat tank water inlet electromagnetic valve;

[0044] 10. Warm water tap;

[0045] 11. Hot water tap;

[0046] 12. Disinfection and drainage solenoid valve;

[0047] 13. Inlet solenoid valve;

[0048] 14. Water solenoid valve;

[0049] 15. Sterilization water inlet solenoid valve;

[0050] 16. Hot water button. Detailed Implementation

[0051] The present invention will be further described below with reference to the accompanying drawings.

[0052] Example 1:

[0053] In this embodiment, as Figure 1 As shown, this utility model provides a pressure control system for a commercial water purifier, including a heating tank 6, a first flow path assembly, a second flow path assembly, a third flow path assembly, a pressure monitoring module 5, and a control motherboard; wherein:

[0054] The hot tank 6 is used to generate hot water for use; for example, heating elements such as heaters and heating wires can be arranged inside the hot tank 6 to heat the water entering the hot tank 6. Since this part is prior art and this utility model does not improve this part, it will not be described in detail; the hot tank 6 has an inlet and an outlet, the inlet is for cold water to enter and the outlet is for cold water to flow out.

[0055] One end of the first flow path component is connected to the outlet of the hot tank 6, and the other end is connected to the hot water intake point for supplying hot water. It should be noted that the hot water intake point is equipped with a hot water solenoid valve 14, a hot water button 16 and a hot water faucet 11. The commercial water purifier includes a shell, the pressure control system is located inside the shell, while the hot water intake point and the warm water intake point are located outside the shell for users to obtain hot or warm water.

[0056] The pressure monitoring module 5 is installed on the first flow path assembly to monitor the pressure inside the hot tank 6. By monitoring the pressure inside the hot tank 6 through the pressure monitoring module 5, the pressure inside the hot tank 6 can be adjusted in a timely manner to prevent pressure buildup that could lead to water leakage in the pipeline or the hot tank 6.

[0057] One end of the second flow path component is connected to the first flow path component, and the other end is connected to the wastewater outlet. It is used to depressurize the hot tank 6 when it is opened. When the pressure monitoring module 5 detects that the pressure in the hot tank 6 is too high, the second flow path component can be opened, and then the water in the hot tank 6 can be diverted to the wastewater outlet to reduce the pressure in the hot tank 6.

[0058] The third flow path assembly is connected with the water source at one end and with the inlet of the hot tank 6 at the other end, and is used to supply cold water to the hot tank 6 for pressure boosting when opened.

[0059] The control mainboard is electrically connected with the pressure monitoring module 5, the second flow path assembly and the third flow path assembly, so as to control the opening and closing of the second flow path assembly or the third flow path assembly according to the obtained pressure value.

[0060] The commercial water purifier pressure control system provided by the utility model can realize the pressure relief of the hot tank 6 through the switch of the second flow path assembly, realize the start and stop of the water replenishment in the hot tank 6 through the switch of the third flow path assembly, so as to realize the replenishment of the water pressure in the hot tank 6, can control the internal pressure of the hot tank 6 and solve the problem of pressure holding existing in the traditional hot tank 6 heating.

[0061] Embodiment 2:

[0062] Embodiment 2 is different from embodiment 1 only in that the structure of the first flow path assembly, the second flow path assembly and the third flow path assembly is specifically limited as shown. Figure 1

[0063] Specifically, in one embodiment, the first flow path assembly comprises a hot water pipe; the pressure monitoring module 5 is arranged on the hot water pipe. One end of the hot water pipe is connected to the top outlet of the hot tank 6, and the other end extends to the front side of the shell of the commercial water purifier and is sequentially connected with the boiled water electromagnetic valve 14 and the hot water faucet 11, and the opening and closing of the boiled water electromagnetic valve 14 can be controlled through the boiled water button 16 located on the shell. When the boiled water button 16 is pressed, the control mainboard will receive a signal, and then control the boiled water electromagnetic valve 14 to open, so as to supply hot water through the hot water faucet 11.

[0064] In order to realize accurate pressure monitoring, the pressure monitoring module 5 is arranged close to the outlet of the hot tank 6.

[0065] In one embodiment, the second flow path assembly comprises a warm water pipe and a disinfection drainage electromagnetic valve 12; the disinfection drainage electromagnetic valve 12 is arranged at the end of the warm water pipe.

[0066] Specifically, the warm water pipe is connected to the hot water pipe between the pressure monitoring module 5 and the boiled water electromagnetic valve 14 at the beginning, and extends to the waste water outlet at the other end. When the disinfection drainage electromagnetic valve 12 is opened, the hot water in the hot tank 6 will flow to the waste water outlet through the hot water pipe and the warm water pipe, so as to release the pressure in the hot tank 6.

[0067] ​When the pressure monitoring module 5 monitors that the pressure in the hot tank 6 is too high and pressure is blocked, the control mainboard can control the sterilization drainage electromagnetic valve 12 to open after receiving the pressure signal and judging, so as to complete the pressure relief process.

[0068] In one embodiment, the third flow path assembly comprises a cold water pipe and a hot tank water inlet electromagnetic valve 9 arranged on the cold water pipe.

[0069] Specifically, one end of the cold water pipe is connected with a water source, for example, tap water, and the other end is connected with the inlet of the hot tank 6, so as to supply cold water, and the hot tank water inlet electromagnetic valve 9 is arranged on the cold water pipe and used for controlling the start and stop of the cold water supply.

[0070] The pressure control system of the utility model, when the water purifier is powered on, automatically starts to monitor the pressure in the hot tank 6, and monitors the pressure in the hot tank 6 in real time, and according to the current pressure in the hot tank 6, judges whether there is a person taking water in the water purifier through an algorithm, the pressure monitoring module 5 is used for monitoring the pressure in the hot tank 6 in real time, and the control mainboard is used for executing a judgment algorithm, by monitoring the pressure in the hot tank 6 of the water purifier in real time, whether a person is taking water in the water purifier at the moment is judged by using the current pressure, the problem that the traditional water purifier cannot judge whether a person is taking water is solved. At the same time, the pressure in the hot tank is kept in a low pressure state, the equipment failure rate caused by pressure is reduced, the user experience is improved, and the technical problems of pressure blocking and being unable to judge whether a person is taking water in the traditional hot tank heating are solved.

[0071] Embodiment 3:

[0072] In this embodiment, as shown in Figures 1-7 The utility model provides a water purifier, which comprises the pressure control system.

[0073] In this embodiment, the water purifier further comprises a heat exchanger 7, a front-end filtration module and a fourth flow path assembly.

[0074] The heat exchanger 7 is arranged between the second flow path assembly and the third flow path assembly to exchange heat between cold water and warm water.

[0075] The front-end filtration module is connected with the third flow path assembly to supply filtered cold water.

[0076] One end of the fourth flow path assembly is connected with the second flow path assembly, and the other end is connected with a warm water taking point.

[0077] Specifically, the warm water taking point and the hot water taking point are arranged side by side and are both located outside the shell, and a warm water faucet 10 is arranged at the warm water taking point.

[0078] The cold end inlet and outlet of the heat exchanger 7 is connected with the cold water pipe, and the hot end inlet and outlet of the heat exchanger 7 is connected with the warm water pipe, so that the warm water flowing through the warm water pipe is cooled by the cold water, and the warm water supply is realized.

[0079] Specifically, the heat exchanger 7 is installed between the hot tank inlet water electromagnetic valve 9 and the hot tank 6 inlet.

[0080] In an embodiment, the fourth flow path assembly is connected at the inlet side of the disinfection drain electromagnetic valve in the second flow path assembly.

[0081] Specifically, the fourth flow path assembly includes a warm water taking pipe, which is connected to the warm water pipe and located on the warm water pipe between the heat exchanger 7 and the disinfection drain electromagnetic valve 12.

[0082] The water purifier provided by the embodiment is a commercial water purifier capable of controlling the pressure inside the hot tank. By monitoring the pressure inside the hot tank of the water purifier in real time, the current pressure is used to determine whether a user is taking water at the moment, thereby solving the problem that the traditional water purifier cannot determine whether a user is taking water. At the same time, the pressure inside the hot tank is kept at a low pressure state, the equipment failure rate caused by pressure is reduced, the user experience is improved, and the problem of pressure accumulation existing in the traditional hot tank heating is solved.

[0083] Embodiment 4:

[0084] In an embodiment, a temperature adjusting pipe connected with the heat exchanger 7 in parallel and connected with the second flow path assembly, and a temperature adjusting valve 8 installed on the temperature adjusting pipe are further included.

[0085] Specifically, one end of the temperature adjusting pipe is connected to the warm water pipe on the front side of the hot end inlet of the heat exchanger 7, and the other end of the temperature adjusting pipe is connected to the warm water pipe at the hot end outlet of the heat exchanger 7, so as to form a flow path structure in parallel with the heat exchanger 7. Part of the hot water flowing out of the hot tank 6 can not be cooled, but directly flows through the temperature adjusting pipe, and then mixes with the cooled water at the hot end outlet of the heat exchanger 7, so as to realize the effect of adjustable temperature of the warm water, and the temperature of the warm water can be accurately adjusted by controlling the opening degree of the temperature adjusting valve 8, that is, controlling the flow of the hot water flowing through the temperature adjusting pipe.

[0086] The temperature adjusting valve 8 can be an electrically controlled valve, and the opening degree can be controlled by a signal, so as to realize the automatic adjustment of the temperature of the warm water.

[0087] The water purifier of the embodiment can adjust the temperature of the warm water, facilitate the needs of different users, improve the application range of the product, and meet the different needs of people.

[0088] Embodiment 5:

[0089] In one embodiment, a sterilization pipe is arranged in parallel with the heat exchanger 7 and connected with the third flow path assembly, and a sterilization water inlet solenoid valve 15 is arranged on the sterilization pipe.

[0090] Specifically, one end of the sterilization pipe is connected with the cold water pipe, and the other end is connected with the inlet of the hot tank 6. When sterilization and disinfection of the hot tank 6 is needed, sterilization and disinfection agents can be directly supplied into the hot tank 6 through the sterilization pipe, and then flow to the waste water outlet through the hot water pipe and the warm water pipe, so as to complete the sterilization and disinfection of the hot tank 6.

[0091] By arranging the sterilization pipe and the sterilization water inlet solenoid valve 15 in parallel with the heat exchanger 7, the sterilization and disinfection of the hot tank 6 and the hot water pipe and the warm water pipe of the water purifier can be realized, so as to avoid the problem that bacteria are easily bred in the water purifier after long-term use.

[0092] Embodiment 6:

[0093] In one embodiment, the front-end filtration module comprises a PCB composite filter core 1, a reverse osmosis filter core 3 and an activated carbon filter core 4 arranged in sequence, and further comprises a water inlet solenoid valve 13 and a pressure stabilizing pump 2 arranged between the PCB composite filter core 1 and the reverse osmosis filter core 3.

[0094] In this embodiment, the water of the water source, for example, tap water, firstly enters the PCB composite filter core 1 to complete primary filtration, then enters the reverse osmosis filter core 3 to complete secondary filtration, and finally enters the activated carbon filter core 4 to complete tertiary filtration, and then enters the hot tank 6 through the heat exchanger 7.

[0095] Through the above structure, the purification and filtration of the drinking water in the water purifier can be realized, and the quality of the drinking water can be ensured.

[0096] The water purifier of the utility model discloses a pressure monitoring module is arranged on the first flow path assembly connected with the hot tank outlet, is used for monitoring the pressure in the hot tank, then utilizes the switch of the second flow path assembly, realizes the pressure relief of the hot tank, realizes the water replenishment start -stop in the hot tank through the switch of the third flow path assembly, so as to realize the replenishment of the water pressure in the hot tank, can control the pressure inside the hot tank, solve the technical problems of the pressure of traditional hot tank heating and the inability to judge that someone takes water.

[0097] In this embodiment, the water purifier further comprises a housing, a heating module arranged in the housing, a mechanical faucet arranged on the housing for taking water, and a control mainboard. The heating module is arranged in the hot tank 6, and the pressure monitoring module 5 is arranged at the outlet of the hot tank 6. The control mainboard can operate the heating module and process the electrical signals transmitted by the pressure monitoring module 5, and operate the corresponding solenoid valve control program.

[0098] A pressure monitoring module 5 is configured to automatically start monitoring the real-time pressure value in the hot tank 6 when the water purifier is powered on, and transmit an electric signal to the control mainboard according to the pressure value.

[0099] Specifically, the control mainboard has a water taking judgment module and a control execution module. The water taking judgment module processes the electric signal transmitted by the pressure monitoring module 5, and determines whether a user is taking water according to the pressure in the hot tank 6. The control execution module is configured to control the on-off of each control element according to the determination result and other signals, that is, the control mainboard determines whether the hot tank water inlet electromagnetic valve 9 or the disinfection drainage electromagnetic valve 12 needs to be opened according to the received electric signal.

[0100] In this embodiment, the determination logic of the water taking judgment module is as follows:

[0101] (1) When the pressure is detected to be lower than 0.025 MPa, it is determined that a user opens the mechanical faucet to take water at this time, and the hot tank water inlet electromagnetic valve 9 is opened to avoid the user's inability to take water.

[0102] (2) When the pressure is detected to be higher than 0.055 MPa, the whole machine determines that no user opens the mechanical faucet to take water at this time, and the hot tank water inlet electromagnetic valve is closed to prevent the pressure in the hot tank from increasing.

[0103] (3) When the pressure is detected to be greater than 0.15 MPa, the whole machine opens the disinfection drainage electromagnetic valve to discharge excess pressure, and closes the disinfection drainage electromagnetic valve when the pressure drops to 0.09 MPa to avoid the pressure being too low to make the whole machine determine that a user takes water and open the hot tank water inlet electromagnetic valve.

[0104] It should be noted that when a user takes hot water by pressing a button, the hot tank water inlet electromagnetic valve is opened regardless of the pressure value detected by the pressure monitoring module.

[0105] Specific working principle:

[0106] When no one takes water, the hot tank water inlet electromagnetic valve 9, the disinfection drainage electromagnetic valve 12, the sterilization water inlet electromagnetic valve 15, and the boiled water electromagnetic valve 14 are closed, and the disinfection drainage electromagnetic valve 12 is opened for pressure relief when pressure relief is needed.

[0107] As Figure 2The water path diagram when the water purifier takes hot water is shown, indicating that the user only takes hot water at this time. The hot water tap 11 has a boiling water button 16, and after pressing the boiling water button 16, the control mainboard controls to open the boiling water electromagnetic valve 14 and the hot tank water inlet electromagnetic valve 9 to take hot water. At this time, the disinfection drainage electromagnetic valve 12 is closed, and the warm water tap 10 (mechanical tap) is in a closed state, and no one takes water. The hot water in the hot tank 6 enters the hot water pipe through the outlet, and then flows out through the boiling water electromagnetic valve 14 and the hot water tap 11 for the user to take; and the tap water enters the reverse osmosis filter core 3 through the PCB composite filter core 1, the water inlet electromagnetic valve 13, and the constant pressure pump 2, and then enters the activated carbon filter core 4, and finally enters the hot tank 6 through the cold water pipe, the hot tank water inlet electromagnetic valve 9, and the cold end inlet and outlet of the heat exchanger 7 to perform water replenishment operation; when the hot water is taken, the boiling water electromagnetic valve 14 and the hot tank water inlet electromagnetic valve 9 are closed.

[0108] As shown in Figure 3 The water path diagram when the water purifier takes warm water is shown, indicating that the user only takes warm water at this time, and does not adjust the temperature. At this time, the user opens the warm water tap 10 (mechanical tap) to take warm water, and the disinfection drainage electromagnetic valve 12 is closed. At this time, the water path pressure decreases, and the pressure monitoring module 5 opens the hot tank water inlet electromagnetic valve 9 according to the detected pressure value. The hot water in the hot tank 6 flows into the hot water pipe through the outlet, and then enters the warm water pipe, and then enters the heat exchanger 7 to exchange heat with the tap water or air in the cold water pipe to realize temperature reduction and convert from hot water to warm water, and then flows into the warm water tap 10 through the warm water taking pipe for taking warm water. The tap water enters the reverse osmosis filter core 3 through the PCB composite filter core 1, the water inlet electromagnetic valve 13, and the constant pressure pump 2, and then enters the activated carbon filter core 4, and finally enters the hot tank 6 through the cold water pipe, the hot tank water inlet electromagnetic valve 9, and the cold end inlet and outlet of the heat exchanger 7 to perform water replenishment operation; when passing through the heat exchanger 7, it will exchange heat with the hot water in the warm water pipe to realize the conversion of hot water to warm water. After the user takes water, the water path pressure rises, and the pressure monitoring module 5 closes the hot tank water inlet electromagnetic valve 9 according to the detected pressure.

[0109] As shown in Figure 4The water path diagram when taking warm water and hot water at the same time is shown, indicating that the user takes warm water and hot water at the same time. The opening and closing of the hot tank water inlet electromagnetic valve 9 and the disinfection drainage electromagnetic valve 12 at this time are consistent with those when only taking warm water, and the opening and closing of the boiled water electromagnetic valve 14 are consistent with those when only taking hot water. Specifically, the hot water faucet 11 has a boiled water button 16, and after pressing the boiled water button 16, the main board controls the opening of the boiled water electromagnetic valve 14 to take hot water. At this time, the disinfection drainage electromagnetic valve 12 is closed, the hot water in the hot tank 6 enters the hot water pipe through the outlet, and then flows out through the boiled water electromagnetic valve 14 and the hot water faucet 11 for the user to take; at the same time, the user opens the warm water faucet 10 (mechanical faucet) to take warm water, and the disinfection drainage electromagnetic valve 12 is closed. At this time, the water path pressure decreases, and the pressure monitoring module 5 opens the hot tank water inlet electromagnetic valve 9 according to the detected pressure value. The hot water in the hot tank 6 flows into the hot water pipe through the outlet, then enters the warm water pipe, and then enters the heat exchanger 7 to exchange heat with the tap water or air in the cold water pipe to realize temperature reduction and convert hot water into warm water, and then flows into the warm water faucet 10 through the warm water taking pipe for taking warm water. The tap water enters the reverse osmosis filter element 3 through the PCB composite filter element 1, the water inlet electromagnetic valve 13 and the pressure stabilizing pump 2, then enters the activated carbon filter element 4, and finally enters the hot tank 6 through the cold water pipe, the hot tank water inlet electromagnetic valve 9 and the cold end inlet and outlet of the heat exchanger 7 to perform water replenishment operation; when passing through the heat exchanger 7, it will exchange heat with the hot water in the warm water pipe to realize the conversion of hot water to warm water. When the hot water is taken, the boiled water electromagnetic valve 14 is closed, and when the user finishes taking the warm water, the water path pressure rises, and the pressure monitoring module 5 closes the hot tank water inlet electromagnetic valve 9 according to the detected pressure.

[0110] As Figure 5The water route map when taking warm water is shown, indicating that the user only takes warm water and adjusts the temperature at this time. The electromagnetic valve switching condition is consistent with that when only warm water is taken. The function of the temperature adjustment valve 8 is to mix the water cooled by the heat exchanger 7 and the water that has not been cooled, so as to increase the water temperature of the warm water faucet 10 (mechanical faucet). Specifically, at this time, the user opens the warm water faucet 10 (mechanical faucet) to take warm water, and the disinfection drain electromagnetic valve 12 is closed. At this time, the water route pressure decreases, and the pressure monitoring module 5 opens the hot tank water inlet electromagnetic valve 9 according to the detected pressure value. The hot water in the hot tank 6 flows into the hot water pipe through the outlet, and then enters the warm water pipe, and then enters the heat exchanger 7 to exchange heat with the tap water or air in the cold water pipe to achieve cooling and conversion from hot water to warm water. At the same time, the temperature adjustment valve 8 is opened, so that the uncooled hot water flows into the temperature adjustment pipe, and then the hot water and the warm water cooled by the heat exchanger 7 are mixed to achieve temperature adjustment. Finally, the temperature-adjusted warm water flows into the warm water faucet 10 through the warm water taking pipe for use. The tap water enters the reverse osmosis filter core 3 through the PCB composite filter core 1, the water inlet electromagnetic valve 13 and the pressure stabilizing pump 2, and then enters the activated carbon filter core 4. Finally, it enters the hot tank 6 through the cold water pipe, the hot tank water inlet electromagnetic valve 9 and the cold end inlet and outlet of the heat exchanger 7 for water replenishment. When passing through the heat exchanger 7, it exchanges heat with the hot water in the warm water pipe to achieve the conversion of hot water to warm water. After the user finishes taking water, the water route pressure rises, and the pressure monitoring module 5 closes the hot tank water inlet electromagnetic valve 9 according to the detected pressure.

[0111] As shown in Figure 6 The water route map when sterilizing and disinfecting is shown. The whole machine has a sterilization and disinfection working condition, and the user is not allowed to take water in this working condition. At this time, the sterilization water inlet electromagnetic valve 15 and the disinfection drain electromagnetic valve 12 are opened, and the disinfection drain electromagnetic valve 12 leads to the waste water outlet.

[0112] Specifically, the hot water in the hot tank 6 flows to the hot water pipe through the outlet, and then enters the warm water pipe, and then enters the heat exchanger 7, without heat exchange, but is directly discharged to the waste water outlet through the disinfection drain electromagnetic valve 12. Since the water flowing in the pipeline is hot water, the high-temperature disinfection effect is achieved. The outflow of hot water in the hot tank 6 will cause a pressure drop and water shortage, and high-temperature disinfection and sterilization should be a continuous process for a certain period of time, so water replenishment in the hot tank is required. The tap water enters the reverse osmosis filter core 3 through the PCB composite filter core 1, the water inlet electromagnetic valve 13 and the pressure stabilizing pump 2, and then enters the activated carbon filter core 4. Finally, it enters the hot tank 6 through the cold water pipe, the sterilization pipe and the sterilization water inlet electromagnetic valve 15. After being heated by the heating module in the hot tank 6, it enters the hot water pipe through the outlet. Considering that disinfection and sterilization have a certain processing time, this action should be closed after a certain time of circulation, so as to complete the high-temperature disinfection and sterilization of the whole set of equipment and pipeline.

[0113] As shown in Figure 7The water path diagram when pressure relief is shown. When no one takes water and the pressure monitoring module 5 detects that the pressure reaches the pressure relief threshold, the disinfection drain electromagnetic valve 12 is opened to discharge excess steam or hot water, and the disinfection drain electromagnetic valve 12 is closed when the pressure tends to be normal.

[0114] Specifically, at this time, the hot tank water inlet electromagnetic valve 9 is in a closed state, the sterilization water inlet electromagnetic valve 15 and the temperature regulating valve 8 are all in a closed state. The hot water in the hot tank 6 enters the hot water pipe through the outlet, then enters the warm water pipe, and then flows into the heat exchanger 7, and then is discharged to the waste water outlet position through the disinfection drain electromagnetic valve 12. Through such operation, the pressure relief of the water pressure in the hot tank 6 is realized, and the problem of pressure accumulation is avoided.

[0115] Although the utility model has been described with reference to the preferred embodiments, various improvements can be made and equivalent parts can be replaced without departing from the scope of the utility model. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0116] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one feature. In the description of the utility model, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0117] In the utility model, unless otherwise specifically defined and limited, the terms "installation", "connection", "connection", "fixing" and other terms should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0118] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific feature, structure, material or characteristic described can be combined in any appropriate manner in any one or more embodiments or examples. Furthermore, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples, without contradiction.

Claims

1. A pressure control system for a commercial water purifier, characterized in that, This includes a hot tank, a first flow path assembly, a second flow path assembly, a third flow path assembly, a pressure monitoring module, and a control mainboard; among which: One end of the first flow path assembly is connected to the outlet of the hot tank, and the other end is connected to the hot water intake point for supplying hot water; The pressure monitoring module is installed on the first flow path assembly to monitor the pressure inside the hot tank; One end of the second flow path component is connected to the first flow path component, and the other end is connected to the wastewater outlet, which is used to depressurize the hot tank when it is opened; One end of the third flow path component is connected to a water source, and the other end is connected to the inlet of the hot tank, which is used to supply cold water to the hot tank for pressurization when it is turned on; The control motherboard is electrically connected to the pressure monitoring module, the second flow path component, and the third flow path component, so as to control the switching of the second flow path component or the third flow path component based on the obtained pressure value.

2. The pressure control system for a commercial water purifier according to claim 1, characterized in that, The first flow path component includes a hot water pipe; the pressure monitoring module is mounted on the hot water pipe.

3. The pressure control system for a commercial water purifier according to claim 2, characterized in that, The pressure monitoring module is located near the outlet of the hot tank.

4. The pressure control system for a commercial water purifier according to claim 1, 2, or 3, characterized in that, The second flow path component includes a warm water pipe and a disinfection and drainage solenoid valve; the disinfection and drainage solenoid valve is located at the end of the warm water pipe.

5. The pressure control system for a commercial water purifier according to claim 1, 2, or 3, characterized in that, The third flow path assembly includes a cold water pipe and a hot tank inlet solenoid valve, with the hot tank inlet solenoid valve mounted on the cold water pipe.

6. A water purifier, characterized in that, Includes the pressure control system as described in any one of claims 1-5.

7. The water purifier according to claim 6, characterized in that, The water purifier also includes a heat exchanger, a front-end filtration module, and a fourth flow path assembly; wherein: The heat exchanger is disposed between the second flow path assembly and the third flow path assembly to perform heat exchange between cold and warm water; The front-end filtration module is connected to the third flow path component to supply filtered cold water; One end of the fourth flow path component is connected to the second flow path component, and the other end is connected to the warm water intake point.

8. The water purifier according to claim 7, characterized in that, The fourth flow path assembly is connected to the inlet side of the disinfection and drainage solenoid valve in the second flow path assembly.

9. The water purifier according to claim 7, characterized in that, It also includes a temperature control tube arranged in parallel with the heat exchanger and connected to the second flow path assembly, and a temperature control valve installed on the temperature control tube.

10. The water purifier according to claim 7, characterized in that, It also includes a sterilization tube connected in parallel with the heat exchanger and connected to the third flow path assembly, and a sterilization inlet solenoid valve installed on the sterilization tube.

11. The water purifier according to claim 7, 8, 9, or 10, characterized in that, The front-end filtration module includes a PCB composite filter element, a reverse osmosis filter element, and an activated carbon filter element arranged in sequence; it also includes an inlet solenoid valve and a pressure stabilizing pump disposed between the PCB composite filter element and the reverse osmosis filter element.

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