Water production system, water purification equipment and control method of water purification equipment

Abstract

The invention relates to the technical field of water purification, and discloses a water production system, water purification equipment and a control method of the water purification equipment. The heat exchange module is provided with a hot water path and a cold water path; the outlet end and the outlet end of the heating module are communicated with the inlet end of the hot water path and the water outlet module respectively; the purified water outlet is selectively communicated with the inlet end of the cold water path and the inlet end of the heating module, and a heat preservation component is arranged in the heat exchange module and used for heating water stored in the heat exchange module. When a user takes boiled water, the heat of water stored in the heat exchange module can be fully utilized, so that the water inlet temperature of the heating module is increased, the waiting time of the user for taking the boiled water is shortened, the use experience of the user is improved, large-flow boiled water taking is achieved, and the problems that the flow is small, the waiting time is long, and the water temperature can be reduced in the boiled water taking process are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification, and in particular to a water production system, a water purification device and a control method thereof. Background Art

[0002] In order to meet people's demand for drinking hot water at any time, many water purification devices on the market are equipped with instant heating faucets to create all-in-one water purification and heating machines, which can instantly provide boiled water in multiple temperature ranges. However, the flow rate of boiling water in its instant heating mode is much smaller than that of normal temperature. Users have to wait a long time to get boiled water, and the small flow rate during the boiling water process will also reduce the water temperature, affecting the user experience. Summary of the invention

[0003] In view of this, the present invention provides a water production system, a water purification device and a control method thereof to solve the problem in the prior art that the user has to wait a long time for boiling water in the water purification device, and the flow rate is small and the water temperature will drop during the boiling water extraction process, thus affecting the user experience.

[0004] In a first aspect, the present invention provides a water production system, comprising:

[0005] A water supply module having a clean water outlet;

[0006] The heat exchange module has a hot water circuit and a cold water circuit that are independent of each other and capable of heat exchange;

[0007] A heating module, wherein the outlet end of the heating module is respectively connected to the inlet end of the hot water circuit and the water outlet module of the water production system, and the outlet end of the hot water circuit is connected to the water outlet module;

[0008] The clean water outlet is selectively connected to the inlet end of the cold water circuit and the inlet end of the heating module. The heat exchange module is provided with a heat preservation component, which is used to heat the stored water in the heat exchange module.

[0009] Beneficial effect: When not in use, the water making system can enter the insulation mode. During the insulation process, if the water storage temperature in the heat exchange module is monitored to be lower than the set temperature, the insulation component is controlled to start heating the water in the heat exchange module, so that the water storage temperature in the heat exchange module is not lower than the set temperature. Therefore, when the user takes boiled water, the heat of the water storage in the heat exchange module can be fully utilized, so that the water inlet temperature of the heating module is increased, and the heating time of the heating module is shortened, thereby shortening the waiting time for the user to take boiled water, improving the user's experience, achieving large flow rate of boiled water, and avoiding problems such as small flow rate, long waiting time, and lower water temperature during the boiled water process.

[0010] In an optional embodiment, the heat exchange module includes:

[0011] The heat exchange inner tube has an internal flow channel forming a hot water circuit;

[0012] The heat exchange outer tube, the heat exchange inner tube is sleeved inside the heat exchange outer tube, and the flow channel between the heat exchange inner tube and the heat exchange outer tube constitutes a cold water circuit;

[0013] The heat-insulating component comprises a first heating element, which is arranged in the heat-exchange outer tube, or at least a part of the heat-exchange outer tube is configured as the first heating element.

[0014] Beneficial effects: The heat exchange module is based on a shell-and-tube heat exchanger structure, with hot and cold fluids passing through inner and outer tubes respectively. In normal boiled water mode, hot water passes through the inner heat exchange tube, and cooling water passes through the outer heat exchange tube, achieving instant cooling, thereby realizing non-contact heat exchange between the two fluids to change the temperature. In high-flow boiling water mode, normal temperature water passes through the outer heat exchange tube and preheats the temperature with the inner heat exchange tube through heat exchange. By arranging the first heating element in the outer heat exchange tube, it is more convenient to assemble, or the outer heat exchange tube portion is constructed as the first heating element, which can further simplify the structure.

[0015] In an optional implementation, the inner diameter of the outer heat exchange tube is set to d1, and the inner diameter of the inner heat exchange tube is set to d2, wherein 3.5d2≥d1≥2.5d2.

[0016] Beneficial effect: By designing the inner diameter d1 of the heat exchange outer tube and the inner diameter d2 of the heat exchange inner tube within the ratio range of 3.5d2≥d1≥2.5d, the heat exchange module can not only perform heat exchange, but also greatly increase the water storage capacity, and can also be used as a water tank or hot tank to store water, so that the heat exchange module integrates water storage and heat exchange functions, has multiple uses, and further simplifies the structure.

[0017] In an optional embodiment, the heat-insulating component further includes a first temperature-sensing bag, and the first temperature-sensing bag is used to detect the temperature of the stored water in the heat exchange module.

[0018] Beneficial effect: The first temperature sensing package can monitor the water temperature in the heat exchange module to ensure that the water temperature in the heat exchange module is not lower than the set temperature in the insulation mode.

[0019] In an optional embodiment, the clean water outlet is selectively connected to the cold water circuit and the inlet end of the heating module through a first dual-channel solenoid valve.

[0020] Beneficial effect: By setting up the first dual-channel solenoid valve, it is convenient to switch and control the water flowing out of the clean water outlet of the water supply module to enter the cold water circuit of the heat exchange module, or directly enter the heating module for heating.

[0021] In an optional embodiment, the first dual-channel solenoid valve has a first inlet, a first outlet, and a second outlet;

[0022] The purified water outlet is connected to the first inlet through a first pipeline, the first outlet is connected to the inlet of the cold water circuit through a second pipeline, and the second outlet is connected to the inlet of the heating module through a third pipeline;

[0023] The outlet of the cold water circuit is connected to the third pipeline through the fourth pipeline.

[0024] Beneficial effect: The first dual-channel solenoid valve is a one-inlet and two-outlet solenoid valve, and the first dual-channel solenoid valve has a first state in which the first inlet is connected to the first outlet, and a second state in which the first inlet is connected to the second outlet. When in the large-flow boiling water mode, the first dual-channel solenoid valve switches to the first state, and the large-flow boiling water branch is connected. The water supply module pushes pure water into the cold water channel of the heat exchange module, and then pushes it into the heating module for heating. Compared with directly entering the heating module through the third pipeline for heating, it can make full use of the heat of the water stored in the heat exchange module, thereby achieving energy saving, faster heating speed, and reducing the waiting time for getting boiled water.

[0025] In an optional embodiment, the water supply module includes a clean water pump having a water inlet and a clean water outlet, and the water inlet is connected to an external water source through a water inlet pipeline.

[0026] In an optional embodiment, the heating module includes a second heating element and a second temperature sensing package, and the second temperature sensing package is used to detect the heating temperature of the second heating element.

[0027] Beneficial effect: By setting up the second temperature sensing package, it is possible to monitor the heating temperature of the second heating element, thereby avoiding the problem of not being able to discover in time when an abnormal condition occurs in the heating temperature of the second heating element.

[0028] In an optional embodiment, the water outlet module includes:

[0029] water outlet;

[0030] A regulating valve is arranged upstream of the water outlet and is used to adjust the outlet water temperature of the water outlet. The regulating valve has a first regulating water inlet, a second regulating water inlet, and a regulating water outlet;

[0031] Among them, the first regulating water inlet is connected to the outlet end of the hot water circuit, the second regulating water inlet is connected to the water outlet end of the heating module, and the regulating water outlet is connected to the inlet of the water outlet nozzle.

[0032] Beneficial effect: Through the regulating valve set, part of the boiled water after being boiled by the heating module flows to the water outlet through the regulating valve, and the other part is input into the hot water water circuit of the heat exchange module, and is cooled down by heat exchange with the normal temperature purified water in the cold water circuit to form low-temperature cooked water, and then flows to the water outlet through the regulating valve. The mixing ratio of boiled water and low-temperature cooked water is controlled by the regulating valve, which can meet the user's demand for cooked water at different temperatures.

[0033] In a second aspect, the present invention further provides a water purification device, including a water production system according to any of the above embodiments, wherein the water production system has a large-flow boiling water branch, and along the water flow direction, the large-flow boiling water branch is sequentially connected to a water supply module, a cold water circuit, a heating module, and a water outlet module;

[0034] The water purification equipment has a heat preservation mode and a large-flow boiling water mode. When the water purification equipment is in the heat preservation mode, the heat preservation component is in a working state; when the water purification equipment is in the large-flow boiling water mode, the large-flow boiling water branch is in a conducting state.

[0035] In a third aspect, the present invention further provides a control method applied to the above water purification device, the control method comprising the following steps:

[0036] Enter the keep warm mode;

[0037] If a water-taking signal is received during the heat preservation process, and the water temperature T in the heat exchange module is greater than the set temperature T0, the water purification device is controlled to conduct the high-flow water branch and enter the high-flow water mode;

[0038] The water supply module is controlled to deliver clean water at room temperature to the cold water circuit according to the first set flow rate Q1, and after heat exchange with the hot water in the hot water circuit to raise the temperature to T0, it is heated to 100°C by the heating module for users to use.

[0039] Beneficial effect: During the insulation process, if a signal is received from the user to take boiled water, and the water storage temperature T in the heat exchange module is greater than the set temperature T0, the water purification equipment is controlled to turn on the large-flow boiled water branch and enter the large-flow boiled water mode. The water supply module transports normal temperature purified water to the cold water circuit according to the first set flow rate Q1, and exchanges heat with the hot water in the hot water circuit to raise the temperature to T0, and then heats it to 100°C through the heating module for user use. This can fully utilize the stored water heat in the heat exchange module, increase the water inlet temperature of the heating module, shorten the waiting time for users to take boiled water, and improve the user experience.

[0040] In an optional embodiment, the set temperature T0 is 70°C;

[0041] and / or, the first set flow rate Q1 is 1 L / min;

[0042] And / or, the power of the heating module is 2100w.

[0043] Beneficial effect: When it is detected that the water temperature in the heat exchange module is greater than 70℃, the user takes boiled water and controls 1L / min of pure water to flow through the outer heat exchange tube, and the boiled water in the inner heat exchange tube is heated to 70℃ non-contactly, and then instantly boiled to 100℃ and flows out through the 2100w second heating element, achieving continuous boiled water extraction at a large flow rate of more than 1.0L / min, solving the problem of small boiled water flow and long waiting time.

[0044] In an optional embodiment, the water production system has a continuous boiled water branch, and along the water flow direction, the continuous boiled water branch is sequentially connected to the water supply module, the heating module, and the water outlet module, and the water purification device also has a boiled water continuous extraction mode;

[0045] The control method further comprises the following steps:

[0046] If a hot water extraction signal is received during the heat preservation process, and the water temperature T in the heat exchange module is less than or equal to the set temperature T0, the water purification device is controlled to conduct the continuous hot water extraction branch and enter the hot water continuous extraction mode;

[0047] Control the water supply module to deliver the normal temperature purified water to the heating module according to the second set flow rate Q2, and heat the heating module to 100°C for users to use;

[0048] The second set flow rate Q2 is smaller than the first set flow rate Q1.

[0049] Beneficial effect: When a signal from the user to take boiled water is received and the water temperature in the heat exchange module is ≤ the set temperature T0, the water supply module is controlled to transport pure water directly from the third pipeline to the flow heating module to heat it to the boiling point for the user to take, thereby achieving the effect of continuous boiled water and avoiding the problem of intermittent boiled water. This allows the water purification equipment to take boiled water continuously, and can solve the problem of interruption of boiled water when multiple people take boiled water, the need to wait, and poor user experience.

[0050] In an optional implementation, the second set flow rate Q2 is 0.4 L / min.

[0051] In an optional embodiment, the heat preservation mode specifically includes:

[0052] When it is detected that the water temperature T in the heat exchange module is less than or equal to the set temperature T0, the heat preservation component is controlled to start heating the water in the heat exchange module until it is detected that the water temperature in the heat exchange module reaches 100°C and then the heating is stopped.

[0053] Beneficial effect: When it is detected that the water temperature of the heat exchange module is ≤70℃, the insulation component is controlled to start heating the water in the heat exchange module until the water in the heat exchange module is heated to 100℃ and then stops heating. This makes it convenient for subsequent users to fully utilize the heat of the water in the heat exchange module when taking boiled water, thereby increasing the water inlet temperature of the heating module, shortening the waiting time for users to take boiled water, and achieving the effect of taking boiled water with a large flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0055] Figure 1 Schematic diagram of the principles of each module of the water production system in an embodiment of the present invention;

[0056] Figure 2 Detailed structural diagram of each module of the water production system in an embodiment of the present invention;

[0057] Figure 3 Schematic diagram of water flow direction when the water purification device is in a high-flow boiling water mode in an embodiment of the present invention (the dotted line in the figure is a high-flow boiling water branch, and the first heating element is arranged on the heat exchange outer tube);

[0058] Figure 4 Schematic diagram of water flow when the water purification device is in a high-flow boiling water mode in an embodiment of the present invention (the dotted line in the figure is a high-flow boiling water branch, and the first heating element is arranged in the heat exchange inner tube);

[0059] Figure 5 Schematic diagram of water flow direction when the water purification device is in a continuous boiling water extraction mode according to an embodiment of the present invention (the dotted line in the figure is a continuous boiling water extraction branch);

[0060] Figure 6 Schematic diagram of the structure of the heat exchange module in an embodiment of the present invention.

[0061] Description of reference numerals:

[0062] 10. Water supply module; 101. Clean water outlet; 11. Clean water pump; 12. Water inlet pipeline;

[0063] 20. heat exchange module; 21. hot water circuit; 22. cold water circuit; 23. first heating element; 201. heat exchange outer tube; 2010. serpentine channel; 202. heat exchange inner tube;

[0064] 30. Heating module; 31. Second heating element; 32. Second temperature sensing package;

[0065] 40. water outlet module; 41. regulating valve; 42. water outlet nozzle;

[0066] 50. A first dual-channel solenoid valve;

[0067] 1a, first pipeline; 2a, second pipeline; 3a, third pipeline; 4a, fourth pipeline; 5a, fifth pipeline; 6a, sixth pipeline; 7a, seventh pipeline; 8a, eighth pipeline. DETAILED DESCRIPTION

[0068] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0069] In the context of the big health industry, in order to meet people's demand for hot water at any time, household water purifiers are equipped with instant hot faucets based on water purification equipment to create a purifier and heat all-in-one machine. Since the maximum current of the power limit of general non-air-conditioning sockets is 10A, the power of the whole machine can only be limited to 2200W, and the boiling water flow of the instant hot faucet is only 400mL / min, which is much smaller than the 1.0L / min of the large-flow water purifier. Users have a long waiting time when getting boiling water, and the user experience is not good. At the same time, the instant heating element heating method also has the problem of simply heating to the set temperature without boiling water and too much cold water volume during the heating process.

[0070] Related patents disclose a heat and water all-in-one system that can increase the flow of boiled water through heat storage. Water of different temperatures is heated to the required temperature by normal temperature water without the steps of boiling and cooling, which is inconsistent with the drinking water habits of Chinese people. Some patents disclose a heat exchange structure and drinking water equipment to provide cooked water, which can achieve cooked water to meet the drinking water habits of Chinese people, but the flow rate of boiled water and cooked water is only 400ml / min, the waiting time for water collection is too long, and the user experience is not good. Through the above analysis, if a water production system with large-flow boiled water and boiled water functions and its control method can be developed, it can greatly reduce the waiting time for water collection while satisfying the habit of Chinese people to drink cold boiled water, which has certain advantages in both technology and application prospects.

[0071] The desktop water-cooking machines currently on the market can instantly provide multi-temperature water, but the instant boiling water flow rate is limited to 400 ml / min, compared with the normal temperature flow rate of 1.0 L / min, the waiting time for users to get boiled water is doubled, and the low-flow boiled water will cool down during the water-taking process, causing the water temperature in the cup to drop by about 10 ° C. The actual waiting time is long, and the boiled water temperature is low when the user takes water, affecting the user experience. Therefore, this embodiment develops a water-making system, water purification equipment and control method with a large-flow boiled water function to improve the user experience.

[0072] Combine the following Figures 1 to 6 , describing an embodiment of the present invention.

[0073] According to an embodiment of the present invention, on the one hand, the present invention provides a water production system, including a water supply module 10, a heat exchange module 20, and a heating module 30, the water supply module 10 has a clean water outlet 101; the heat exchange module 20 has a hot water waterway 21 and a cold water waterway 22 that are independent of each other and can perform heat exchange; the outlet end of the heating module 30 is respectively connected to the inlet end of the hot water waterway 21 and the water outlet module 40 of the water production system, and the outlet end of the hot water waterway 21 is connected to the water outlet module 40; the clean water outlet 101 is selectively connected to the inlet end of the cold water waterway 22 and the inlet end of the heating module 30, and a heat preservation component is provided in the heat exchange module 20, and the heat preservation component is used to heat the stored water in the heat exchange module 20.

[0074] In the above embodiment, when not in use, the water making system can enter the insulation mode. During the insulation process, if it is monitored that the water temperature in the heat exchange module 20 is lower than the set temperature, the insulation component is controlled to start heating the water in the heat exchange module 20, so that the water temperature in the heat exchange module 20 is not lower than the set temperature. When the user takes boiled water, the heat of the water in the heat exchange module can be fully utilized, so that the water inlet temperature of the heating module is increased, and the heating time of the heating module is shortened, thereby shortening the waiting time for the user to take boiled water, improving the user's experience, and realizing large flow rate of boiled water, avoiding problems such as small flow rate, long waiting time, and lower water temperature during the boiled water process.

[0075] In some embodiments, in combination Figure 1 , Figure 2 and Figure 6 As shown, the heat exchange module 20 includes a heat exchange inner tube 202 and a heat exchange outer tube 201. The internal flow channel of the heat exchange inner tube 202 constitutes a hot water waterway 21; the heat exchange inner tube 202 is sleeved in the heat exchange outer tube 201, and the flow channel between the heat exchange inner tube 202 and the heat exchange outer tube 201 constitutes a cold water waterway 22. The heat preservation component includes a first heating element 23, as shown in FIG. Figure 3 and Figure 6 As shown, the first heating element 23 is arranged in the heat exchange outer tube 201, or as shown in Figure 4 As shown, the heat exchange outer tube 201 is at least partially constructed as a first heat generating body 23 .

[0076] In the above embodiment, the heat exchange module 20 is based on a shell and tube heat exchanger structure, and the hot and cold fluids are respectively passed through the inner and outer tubes. In the normal boiled water mode, the hot water passes through the inside of the heat exchange inner tube 202, and the cooling water passes through the heat exchange outer tube 201, so as to realize instant cooling, thereby realizing the non-contact heat exchange between the two fluids to change the temperature. In the large-flow boiling water mode, the normal temperature water passes through the heat exchange outer tube 201 and the heat exchange inner tube 202 for heat exchange preheating and temperature rise. By arranging the first heating element 23 in the heat exchange outer tube 201, it is more convenient to assemble, or the heat exchange outer tube 201 is partially constructed as the first heating element, which can further simplify the structure.

[0077] Specifically, in this embodiment, Figure 6 As shown, the heat exchange inner tube 202 adopts a serpentine tube, and the heat exchange outer tube 201 adopts a spliced ​​shell structure. The heat exchange outer tube 201 has two half shells that are buckled together. At least one of the two half shells is provided with a serpentine channel 2010. The serpentine heat exchange inner tube 202 is embedded in the serpentine channel 2010 of one half shell, and then the other half shell is buckled to form a closed structure. There is a set gap between the serpentine channel 2010 and the heat exchange inner tube 202, and the gap constitutes a cold water channel 22. Figure 3 As shown, the first heating element 23 is arranged in the heat exchange outer tube 201. The first heating element 23 can adopt a heating wire, a heating tube, a heating plate or other structural forms. When it is necessary to disassemble and maintain it, the two half shells of the heat exchange outer tube 201 can be directly disassembled, which is very convenient and quick.

[0078] Of course, in other alternative embodiments, the first heating element 23 may also be disposed in the heat exchange inner tube 202. Figure 4 As shown, the heat exchange inner tube 202 is at least partially constructed as the first heating element 23, and the heat exchange inner tube 202 as a whole adopts the structure of a heat tube, or at least part of the heat exchange inner tube 202 adopts the structure of a heat tube. When the heat exchange module 20 starts the normal heat exchange function, the heat tube is not energized, and it normally guides the water flow as a water pipe. When the heat exchange module 20 starts the insulation function, the heat tube is controlled to be energized to heat the hot water flowing through, thereby realizing the insulation function.

[0079] In some embodiments, the inner diameter of the heat exchange outer tube 201 is set to d1, and the inner diameter of the heat exchange inner tube 202 is set to d2, wherein 3.5d2≥d1≥2.5d2.

[0080] In the above embodiment, by designing the inner diameter d1 of the heat exchange outer tube 201 and the inner diameter d2 of the heat exchange inner tube 202 within the ratio range of 3.5d2≥d1≥2.5d, the heat exchange module 20 can not only perform heat exchange, but also greatly increase the water storage capacity, and can also be used as a water tank or hot tank to store water, so that the heat exchange module 20 integrates water storage and heat exchange functions, has multiple uses, and further simplifies the structure.

[0081] Preferably, d1=3d2. Compared with the existing design in which the cold water channel 22 and the hot water channel 21 have the same size, the size of the cold water channel 22 is approximately twice that of the hot water channel 21. After the outer tube diameter is increased, the water storage capacity of the heat exchange module 20 is greatly increased.

[0082] In some embodiments, the heat preservation component further includes a first temperature sensing package, and the first temperature sensing package is used to detect the temperature of the stored water in the heat exchange module 20 .

[0083] In the above embodiment, the first temperature sensing package is provided to monitor the temperature of the water stored in the heat exchange module 20, thereby ensuring that the temperature of the water stored in the heat exchange module 20 is not lower than the set temperature in the heat preservation mode.

[0084] Specifically, the first temperature sensing bag can be set in the heat exchange outer tube 201 or in the heat exchange inner tube 202, or can be set at a position such as the water outlet of the heat exchange outer tube 201 and the heat exchange inner tube 202; or, in some more preferred embodiments, there are two first temperature sensing bags, and the two first temperature sensing bags are respectively arranged in the heat exchange outer tube 201 and the heat exchange inner tube 202. The water storage temperature or the real-time temperature of the heat exchange module 20 is based on the average value of the temperatures detected by the two first temperature sensing bags, and the temperature measurement is more accurate.

[0085] In some embodiments, the clean water outlet 101 is selectively connected to the cold water circuit 22 and the inlet of the heating module 30 through the first dual-channel solenoid valve 50. The first dual-channel solenoid valve 50 is provided to conveniently switch and control the water flowing out of the clean water outlet 101 of the water supply module 10 to pass into the cold water circuit 22 of the heat exchange module 20, or directly pass into the heating module 30 for heating.

[0086] In some embodiments, the first dual-channel solenoid valve 50 has a first inlet, a first outlet and a second outlet; the clean water outlet 101 is connected to the first inlet through a first pipeline 1a, the first outlet is connected to the inlet of the cold water circuit 22 through a second pipeline 2a, and the second outlet is connected to the inlet of the heating module 30 through a third pipeline 3a; the outlet of the cold water circuit 22 is connected to the third pipeline 3a through a fourth pipeline 4a.

[0087] In the above embodiment, the first dual-channel solenoid valve 50 is a one-inlet and two-outlet solenoid valve. The first dual-channel solenoid valve 50 has a first state in which the first inlet is connected to the first outlet, and a second state in which the first inlet is connected to the second outlet. When the large-flow boiling water mode is performed, the first dual-channel solenoid valve 50 switches to the first state, and the large-flow boiling water branch is connected. The water supply module 10 pushes the pure water into the cold water channel 22 of the heat exchange module 20, and then pushes it into the heating module 30 for heating. Compared with directly entering the heating module 30 for heating through the third pipeline 3a, it can make full use of the heat of the water stored in the heat exchange module 20, thereby achieving energy saving, faster heating speed, and reducing the waiting time for taking boiled water.

[0088] In this embodiment, the boiled water heated by the heating module 30 can flow out directly through the water outlet module 40, and the user can directly use the boiled water; or the boiled water heated by the heating module 30 can be mixed with the boiled water directly coming out of the heating module 30 to a set temperature after being heat exchanged by the heat exchange module 20 for use by the user; or, the boiled water heated by the heating module 30 circulates in a circulation branch formed by connecting the clean water outlet 101 of the water supply module 10, the cold water circuit 22, the heating module 30, the hot water circuit 21, and the circulating water inlet 102 of the water supply module 10 in sequence, so as to realize the heat preservation function.

[0089] In some embodiments, the water supply module 10 includes a clean water pump 11 , which has a water inlet and a clean water outlet 101 , and the water inlet is connected to an external water source through a water inlet pipeline 12 .

[0090] It should be noted that, in this embodiment, the water supply module 10 includes a water supply system with a filter element for real-time water purification or a water supply system without a filter element and without real-time purification. The water purification pump 11 is preferably a water purification micro pump.

[0091] In some embodiments, the heating module 30 includes a second heating element 31 and a second temperature sensing package 32, and the second temperature sensing package 32 is used to detect the heating temperature of the second heating element 31. The second temperature sensing package 32 can monitor the heating temperature of the second heating element 31 to avoid the problem of not being able to detect the abnormal heating temperature of the second heating element 31 in time.

[0092] Preferably, the heating module 30 is an instant heating element with functions such as rapid, stable heating and adjustable power. After the purified water with different parameters is input into the heating element, the control system starts the second heating element 31 according to the sensor parameters and adjusts the corresponding power parameters to heat the purified water to boiling point. The second heating element 31 includes a heating tube with a heating channel inside. The water is heated when it flows through the heating channel. The second temperature sensing bag 32 is arranged downstream of the second heating element 31.

[0093] In some embodiments, the water outlet module 40 includes a water outlet 42 and a regulating valve 41. The regulating valve 41 is arranged upstream of the water outlet 42 and is used to adjust the water outlet temperature of the water outlet 42. The regulating valve 41 has a first regulating water inlet, a second regulating water inlet, and a regulating water outlet; wherein the first regulating water inlet is connected to the outlet end of the hot water circuit 21, the second regulating water inlet is connected to the water outlet end of the heating module 30, and the regulating water outlet is connected to the inlet of the water outlet 42.

[0094] In the above embodiment, through the regulating valve 41 that is set, a part of the boiled water after being boiled by the heating module 30 flows to the water outlet 42 through the regulating valve 41, and the other part is input into the hot water circuit 21 of the heat exchange module 20, and is cooled by heat exchange with the normal temperature purified water in the cold water circuit 22 to form low-temperature cooked water, and flows to the water outlet 42 through the regulating valve 41. The mixing ratio of boiled water and low-temperature cooked water is controlled by the regulating valve 41, which can meet the user's demand for cooked water at different temperatures.

[0095] Specifically, the regulating valve 41 is of stepless regulating type, the outlet of the heating module 30 is connected to the second regulating water inlet through the fifth pipeline 5a, and the fifth pipeline 5a is connected to the inlet of the hot water circuit 21 through the sixth pipeline 6a. The boiled water after the heating module 30 can flow to the regulating valve 41 through the fifth pipeline 5a, or can also flow to the hot water circuit 21 through the sixth pipeline 6a for cooling and then flow to the regulating valve 41 through the seventh pipeline 7a. The seventh pipeline 7a is connected between the outlet of the hot water circuit 21 and the first regulating water inlet. The proportion of boiled water flowing into the sixth pipeline 6a, that is, the hot water circuit 21, can be controlled by the regulating valve 41. For example, all the water heated by the heating module 30 can be controlled to flow into the sixth pipe 6a, cooled by the heat exchange module 20, and then flow out from the water outlet module 40 for users to use. Alternatively, half of the water can be controlled to flow into the water outlet 42 through the fifth pipe 5a, and the other half of the water can flow into the heat exchange module 20 through the sixth pipe 6a for cooling. The water outlet is connected to the water outlet 42 through the eighth pipe 8a.

[0096] The specific structure and principle of the water production system of this embodiment are introduced below in conjunction with the accompanying drawings.

[0097] The water production system provided in this embodiment includes a water supply module 10, a heating module 30, a heat exchange module 20, a control module and related supporting structures.

[0098] Specifically, the water supply module 10, the heating module 30, and the heat exchange module 20 have one or more water inlets and outlets. The water inlet of the water supply module 10 is connected to the raw water source, and the clean water outlet of the water supply module 10 has a clean water outlet 101, and the clean water outlet 101 is connected to the first dual-channel solenoid valve 50. One outlet of the first dual-channel solenoid valve 50 is connected to the inlet of the cold water circuit 22 of the heat exchange module 20, and the outlet of the cold water circuit 22 is connected to the water inlet of the heating module 30. The first water outlet of the heating module 30 is connected to the inlet of the hot water circuit 21 of the heat exchange module 20, and the second water outlet of the heating module 30 is connected to the second regulating water inlet of the regulating valve 41. The outlet of the heat exchange inner tube 202 is connected to the first regulating water inlet, and the water outlet of the regulating valve 41 is connected to the water outlet 42 of the whole machine.

[0099] Furthermore, the water supply module 10 has different system characteristics according to the quality of the raw water. When the raw water is of drinking water quality, the water supply module 10 may be without a purification system, and only the normal temperature purified water is transported from the water outlet of the water supply module 10 to the water inlet of the heat exchange outer tube 201 of the heat storage heat exchange module 20, the water outlet of the heat exchange outer tube 201, the heating module 30, the water inlet of the heat exchange inner tube 202, the water outlet of the heat exchange inner tube 202, and the water outlet 42 through a conveying device (such as a pressure-stabilizing pump); when the raw water quality is non-drinking water quality, the water supply module 10 may have a corresponding purification system to transport the purified water from the water outlet of the water supply module 10 to the water inlet of the heat exchange outer tube 201 of the heat storage heat exchange module 20, the water outlet of the heat exchange outer tube 201, the heating module 30, the water inlet of the heat exchange inner tube 202, the water outlet of the heat exchange inner tube 202, and the water outlet 42; ... The raw water quality purification meets the drinking standard. The purification system can have a single or combined form of a pretreatment module and a deep treatment module. The pretreatment realizes the preliminary filtration of the water to remove pollutants such as sediment, rust, and residual chlorine. It can be a combination or composite form of a primary filter element and an activated carbon filter element. The primary filter element can be a PP cotton filter element or an ultrafiltration filter element. The activated carbon filter element can be a granular activated carbon, carbon fiber or carbon rod filter element; the deep treatment module realizes the deep filtration of the water to remove heavy metals, microorganisms and other toxic and harmful substances. It can be a combination of ultrafiltration, nanofiltration or reverse osmosis filtration modules. The room temperature outlet water of the purification system can be transported to the water inlet end of the heating module 30 and the cooling water inlet of the heat exchange module 20 through the conveying equipment and the dual-channel solenoid valve.

[0100] Furthermore, the heat exchange module 20 may be in the form of a casing, immersion or other structural forms. Preferably, the heat exchange module 20 is a casing heat exchange structure (for example, during operation, boiling clean water and multi-temperature clean water are respectively input into the water inlet end of the heat exchange inner tube 202 and the water inlet end of the heat exchange outer tube 201, and the boiling clean water and the multi-temperature clean water are separated by a heat-conducting material. The boiling clean water is cooled down and the multi-temperature clean water is heated up by heat transfer. The control module controls the operating parameters (for example, flow rate, contact time, etc.) of the heat exchange module 20 and the power of the second heating element 31 and the opening and closing degree of the regulating valve 41 by detecting corresponding clean water parameters (for example, water temperature, flow rate, etc.) and multi-temperature clean water parameters (temperature, volume, etc.). Timely delivery of fresh boiled water at different temperature ranges and flow rates is achieved. In this embodiment, the heat exchange module 20 integrates the functions of water storage and heat exchange. The heat exchange module 20 is based on a shell-and-tube heat exchanger structure, and cold and hot fluids are respectively passed through the inner and outer tubes, thereby realizing non-contact heat exchange and temperature change of the two fluids; by optimizing the size and structural design of the heat exchange module 20, both water storage and heat exchange can be achieved. In the boiled water function, hot water passes through the hot water water path 21 inside the shell, and cooling water passes through the hot water water path 21 outside the shell, realizing instant cooling. In the large-flow boiled water function, normal temperature water passes through the cold water water path 22 and exchanges heat with the hot water stored in the hot water water path 21 to achieve instant preheating and temperature rise.

[0101] Furthermore, the heating module 30 has a second heating element 31 with adjustable power, which can be a PTC heating element, a rare earth thick film heating element or a metal heating tube, etc. The purified water in contact with the second heating element 31 is heated and boiled by heating, and the heating power of the second heating element 31 is controlled and adjusted by the control module according to the detected sensor parameters. The system can change the water inlet temperature of the heat exchange inner tube 202 by adjusting the power of the second heating element 31 or the pump flow, thereby realizing the continuous supply of cooked water.

[0102] Furthermore, the water supply module 10 provides normal temperature purified water required for drinking. After being pressurized by the water purification pump 11, the purified water enters the heat exchange outer tube 201 at a set flow rate and then enters the heating module 30. After being boiled by the heating module 30, a part of it flows to the outlet of the water outlet nozzle 42 through the regulating valve 41, and the other part is input to the water inlet end of the heat exchange inner tube 202. After heat exchange and cooling with normal temperature purified water in the heat exchange module 20, it flows to the outlet of the water outlet nozzle 42 through the regulating valve 41. The low-temperature cooked water and boiled water are mixed in proportion through the regulating valve 41 to meet the user's different temperature boiled water needs. The control system collects relevant sensor parameters according to the user's different temperature and flow boiled water needs, and then controls the water supply parameters, heating parameters, and heat exchange parameters to achieve the required boiled water output.

[0103] Furthermore, the control module senses the operating parameters and environmental parameters of various sensors (for example, the second temperature sensing package 32 provided at the heating module 30, the first temperature sensing package provided in the heat exchange module 20, the temperature sensor provided at the water outlet 42, and the water level sensor provided in the water tank of the whole machine), and selects different control logics to run according to user needs, starts and stops the corresponding conveying equipment, and adjusts the operating parameters of different modules to output boiled water to meet user needs. The control module can control the output power or start time of the raw water self-priming pump, the start and stop or output power of the water purification pump 11, the output power of the second heating element 31, etc., to realize functions such as large-flow boiled water and cooked water supply.

[0104] According to an embodiment of the present invention, on the other hand, a water purification device is provided, comprising a water production system of any one of the above-mentioned embodiments, the water production system having a large-flow boiling water branch, along the water flow direction, the large-flow boiling water branch is sequentially connected to the water supply module 10, the cold water circuit 22, the heating module 30, and the water outlet module 40; the water purification device has a heat preservation mode and a large-flow boiling water mode, when the water purification device is in the heat preservation mode, the heat preservation component is in working state; when the water purification device is in the large-flow boiling water mode, the large-flow boiling water branch is in a conducting state.

[0105] Specifically, the third pipeline 3a includes a first pipe section between the first dual-channel solenoid valve 50 and the fourth pipeline 4a, and a second pipe section between the fourth pipeline 4a and the heating module 30. The large-flow boiling water branch sequentially connects the water inlet of the clean water pump 11, the first dual-channel solenoid valve 50, the cold water circuit 22, the heating module 30, the regulating valve 41, and the water outlet 42. Specifically, along the water flow direction, the large-flow boiling water branch sequentially includes the water inlet pipeline 12, the first pipeline 1a, the second pipeline 2a, the fourth pipeline 4a, the second pipe section of the third pipeline 3a, the fifth pipeline 5a, and the eighth pipeline 8a.

[0106] According to an embodiment of the present invention, on the other hand, a control method applied to the above water purification equipment is provided, Figures 1 to 4 As shown, the control method includes the following steps:

[0107] Step S101: Entering the keep warm mode;

[0108] Step S102: If a water-taking signal is received during the heat preservation process, and the water temperature T in the heat exchange module 20 is greater than the set temperature T0, the water purification device is controlled to conduct the high-flow water-taking branch and enter the high-flow water-taking mode;

[0109] Step S103: Control the water supply module 10 to deliver room temperature purified water to the cold water circuit 22 according to the first set flow rate Q1, and heat it with the hot water in the hot water circuit 21 to raise the temperature to T0, and then heat it to 100° C. through the heating module 30 for users to use.

[0110] In the above embodiment, during the heat preservation process, if a user takes a boiled water signal is received, and at this time the water storage temperature T in the heat exchange module 20 is greater than the set temperature T0, the water purification equipment is controlled to conduct the large-flow boiled water branch and enter the large-flow boiled water mode. The water supply module 10 delivers the normal temperature purified water to the cold water circuit 22 according to the first set flow Q1, and heats with the hot water in the hot water circuit 21 to raise the temperature to T0, and then heats to 100°C through the heating module 30 for the user to take. The heat of the stored water in the heat exchange module 20 can be fully utilized, so that the water inlet temperature of the heating module 30 is increased, the waiting time for the user to take boiled water is shortened, and the user experience is improved. When taking boiled water, combined with the water storage temperature and the temperature of the heating module 30, the water supply flow of the water purification pump 11 and the heating power of the heating module 30 are controlled by a specific algorithm to achieve continuous taking of boiled water with a large flow rate, which effectively solves the problem that the user has a long waiting time when taking boiled water, and the water temperature will be reduced due to the small flow rate during the process of taking boiled water, which affects the user experience.

[0111] In some preferred embodiments, the set temperature T0 is 70° C.; the first set flow rate Q1 is 1 L / min; and the power of the heating module 30 is 2100 W.

[0112] In the above embodiment, when it is detected that the water temperature in the heat exchange module 20 is greater than 70°C, the user takes boiled water, and controls 1L / min of pure water to flow through the heat exchange outer tube 201, and the boiled water in the heat exchange inner tube 202 is heated to 70°C in a non-contact manner, and then instantly boiled to 100°C through the 2100w second heating element 31 and flows out, thereby achieving continuous taking of boiled water at a large flow rate of more than 1.0L / min, solving the problem of small boiled water flow rate and long waiting time.

[0113] Specifically, when the user takes water, the first temperature sensing package detects that the water temperature of the heat exchange module 20 is greater than 70°C, the first dual-channel solenoid valve 50 and the regulating valve 41 are switched to the large-flow boiled water branch, and the clean water pump 11 pushes the clean water at room temperature into the heat exchange outer tube 201 at a flow rate of 1L / min, and then the hot water flows out after being heated to 100°C by the 2100w second heating element 31. This can fully utilize the heat of the stored water in the heat exchange module 20 and increase the water temperature entering the heating module 30, thereby reducing the heating time and achieving large-flow boiled water. At the same time, it can shorten the waiting time for users to take boiled water and improve the user experience.

[0114] Preferably, when entering the high-flow boiling water mode, the first heating element 23 can be controlled to be in a working state, and the first heating element 23 heats the incoming water in the heat exchange module 20; or, heats the stored water in the hot water circuit 21 to perform efficient heat exchange with the water newly entering the cold water circuit 22.

[0115] In this embodiment, the insulation mode can be started when the user is not taking water to achieve idle heating. The heat exchange module 20 stores water, and large-flow continuous water withdrawal is achieved when taking boiled water. When taking boiled water, the stored water temperature and the temperature of the heating module 30 are combined, and the water supply flow of the water purification pump 11 and the heating power of the second heating element 31 are controlled through a specific algorithm to achieve continuous water withdrawal with a large flow of more than 1.0L / min, thereby solving the problem of small boiled water flow and long waiting time.

[0116] In some embodiments, in combination Figure 1 , Figure 2 , Figure 5 As shown, the water system has a continuous boiled water branch, which is connected to the water supply module 10, the heating module 30, and the water outlet module 40 in sequence along the water flow direction. The continuous boiled water branch includes the water inlet pipeline 12, the first pipeline 1a, the third pipeline 3a, the fifth pipeline 5a, and the eighth pipeline 8a in sequence along the water flow direction. The water purification device also has a boiled water continuous extraction mode;

[0117] The control method further comprises the following steps:

[0118] Step S201: If a hot water extraction signal is received during the heat preservation process, and the stored water temperature T ≤ the set temperature T0 is detected, the water purification device is controlled to conduct the continuous hot water extraction branch and enter the hot water continuous extraction mode;

[0119] Step S202: Control the water supply module 10 to deliver the purified water at room temperature to the heating module 30 according to the second set flow rate Q2, and heat the heating module 30 to 100° C. for the user to use;

[0120] The second set flow rate Q2 is smaller than the first set flow rate Q1.

[0121] In the above embodiment, when a user's signal for taking boiled water is received and the water temperature in the heat exchange module 20 is ≤ the set temperature T0, the water supply module 10 is controlled to transport the pure water directly from the third pipeline 3a to the flow heating module 30 at a relatively small Q2 flow rate to heat it to the boiling point for the user to take, thereby achieving the effect of continuously taking boiled water and avoiding the problem of intermittent boiled water. This allows the water purification equipment to take boiled water continuously, and can solve the problem of multiple people taking boiled water and the need to wait, which results in a poor user experience.

[0122] Further, in some embodiments, the second set flow rate Q2 is 0.4L / min. In the continuous boiling water extraction mode, the heating module 30 heats the pure water flowing through with a power of 2100w, and the flow rate of the water purification pump 11 is 0.4L / min. Specifically, when the user takes boiled water, when the first temperature sensing package detects that the water temperature in the heat exchange module 20 is ≤70°C, the first dual-channel solenoid valve 50 and the regulating valve 41 are switched to the continuous boiling water extraction branch, and the water purification pump 11 pushes the normal temperature purified water into the 2100w second heating element 31 at a flow rate of 0.4L / min to heat it to 100°C and boiled water flows out.

[0123] In some embodiments, the cyclic heating mode specifically includes:

[0124] When it is detected that the water temperature T in the heat exchange module 20 is lower than the set temperature T0, the heat preservation component is controlled to heat the water in the heat exchange module 20 until it is detected that the water temperature in the heat exchange module 20 reaches 100°C and the heating is stopped.

[0125] In the above embodiment, when it is detected that the water temperature of the heat exchange module 20 is ≤70°C, the heat preservation component is controlled to start heating the water in the heat exchange module 20 until the water in the heat exchange module 20 is heated to 100°C and then the heating is stopped, so that the subsequent user can make full use of the heat of the water in the heat exchange module 20 when taking boiled water, so that the water inlet temperature of the heating module 30 is increased, the waiting time for the user to take boiled water is shortened, and the effect of taking boiled water with a large flow rate is achieved.

[0126] Specifically, when the user does not take water, when the first temperature sensing package detects that the water in the heat exchange module 20 is ≤70°C, the heat preservation component starts to heat the water in the heat exchange module 20 to 100°C. When the user takes boiled water: if the water temperature in the heat exchange module 20 is greater than 70°C, the first dual-channel solenoid valve 50 is cut into the large-flow boiled water branch, the water purification pump 11 intakes water at a flow rate of 1L / min, and pushes the hot water with a temperature greater than 70°C in the cold water circuit 22 into the heating module 30, and is heated to 100°C boiled water by the second heating element 31 of 2100w. Since the water temperature in the cold water circuit 22 is greater than 70°C, the heat of the water in the heat exchange module 20 can be fully utilized, so that the water inlet temperature of the heating module 30 is increased, and rapid heating is achieved, shortening the waiting time for the user to take boiled water; if the water temperature in the heat exchange module 20 is ≤70°C, it indicates that the water temperature in the heat exchange module 20 is relatively low. At this time, the first dual-channel solenoid valve 50 is controlled to be cut into the continuous boiled water branch, and the water supply module 10 is controlled to intake water at a flow rate of 0.4L / min to ensure that boiled water can be continuously supplied, so that water taking is continuous, and the problem of water flow interruption and waiting when multiple people take water is solved.

[0127] The heat exchange module 20 provided in this embodiment has the functions of heat preservation, water storage and heat exchange, which is equivalent to a hot tank and a heat exchanger. Combined with the logic control method to control the start and stop of different system components, it can realize the instantaneous supply of large-flow boiling water and continuous boiling water extraction, reduce the waiting time for boiling water extraction and make water extraction continuous, which can solve the problem of water flow interruption and waiting when multiple people are getting water.

[0128] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations shall all fall within the protection scope of the embodiments of the present application.

Claims

1. A water production system, characterized in that: include: A water supply module (10) having a clean water outlet (101); The heat exchange module (20) has a hot water circuit (21) and a cold water circuit (22) which are independent of each other and capable of heat exchange; A heating module (30), wherein the outlet end of the heating module (30) is respectively connected to the inlet end of the hot water circuit (21) and the water outlet module (40) of the water production system, and the outlet end of the hot water circuit (21) is connected to the water outlet module (40); The clean water outlet (101) is selectively connected to the inlet end of the cold water circuit (22) and the inlet end of the heating module (30), and a heat preservation component is provided in the heat exchange module (20), and the heat preservation component is used to heat the stored water in the heat exchange module (20).

2. The water production system according to claim 1, characterized in that: The heat exchange module (20) comprises: A heat exchange inner tube (202), the inner flow passage of which constitutes the hot water circuit (21); A heat exchange outer tube (201), the heat exchange inner tube (202) being sleeved inside the heat exchange outer tube (201), and the flow channel between the heat exchange inner tube (202) and the heat exchange outer tube (201) forming the cold water circuit (22); The heat-insulating component comprises a first heating element (23), the first heating element (23) being arranged in the heat-exchange outer tube (201), or the heat-exchange outer tube (201) is at least partially constructed as the first heating element (23).

3. The water production system according to claim 2, characterized in that: The inner diameter of the heat exchange outer tube (201) is set to d1, and the inner diameter of the heat exchange inner tube (202) is set to d2, wherein 3.5d2≥d1≥2.5d2.

4. The water production system according to claim 2, characterized in that: The heat-insulating component further comprises a first temperature-sensing package, wherein the first temperature-sensing package is used to detect the temperature of the stored water in the heat exchange module (20).

5. The water production system according to any one of claims 1 to 4, characterized in that: The clean water outlet (101) is selectively connected to the cold water circuit (22) and the inlet end of the heating module (30) via a first dual-channel solenoid valve (50).

6. The water production system according to claim 5, characterized in that: The first dual-channel solenoid valve (50) has a first inlet, a first outlet and a second outlet; The purified water outlet (101) is connected to the first inlet via a first pipeline (1a), the first outlet is connected to the inlet of the cold water circuit (22) via a second pipeline (2a), and the second outlet is connected to the inlet of the heating module (30) via a third pipeline (3a); The outlet of the cold water circuit (22) is connected to the third pipeline (3a) via a fourth pipeline (4a).

7. The water production system according to any one of claims 1 to 4, characterized in that: The water supply module (10) comprises a clean water pump (11), the clean water pump (11) having a water inlet and the clean water outlet (101), the water inlet being connected to an external water source via a water inlet pipeline (12); And / or, the heating module (30) comprises a second heating element (31) and a second temperature sensing package (32), wherein the second temperature sensing package (32) is used to detect the heating temperature of the second heating element (31).

8. The water production system according to any one of claims 1 to 4, characterized in that: The water outlet module (40) comprises: A water outlet (42); A regulating valve (41) is arranged upstream of the water outlet nozzle (42) and is used to adjust the outlet water temperature of the water outlet nozzle (42). The regulating valve (41) has a first regulating water inlet, a second regulating water inlet, and a regulating water outlet; Wherein, the first regulating water inlet is connected to the outlet end of the hot water circuit (21), the second regulating water inlet is connected to the water outlet end of the heating module (30), and the regulating water outlet is connected to the inlet of the water outlet nozzle (42).

9. A water purification device, characterized in that: A water production system comprising any one of claims 1 to 8; The water production system has a large-flow boiling water branch, and along the water flow direction, the large-flow boiling water branch is sequentially connected to the water supply module (10), the cold water circuit (22), the heating module (30), and the water outlet module (40); The water purification device has a heat preservation mode and a high-flow boiling water mode. When the water purification device is in the heat preservation mode, the heat preservation component is in a working state; when the water purification device is in the high-flow boiling water mode, the high-flow boiling water branch is in a conducting state.

10. A control method for the water purification device according to claim 9, characterized in that: The control method comprises the following steps: Enter the keep warm mode; If a hot water taking signal is received during the heat preservation process, and the water temperature T in the heat exchange module (20) is greater than the set temperature T0, the water purification device is controlled to conduct the high-flow hot water branch and enter the high-flow hot water mode; The water supply module (10) is controlled to deliver purified water at room temperature to the cold water circuit (22) at a first set flow rate Q1, and after heat exchange with hot water in the hot water circuit (21) to raise the temperature to T0, the water is then heated to 100° C. by the heating module (30) for use by users.

11. The control method of the water purification equipment according to claim 10, characterized in that: The set temperature T0 is 70°C; And / or, the first set flow rate Q1 is 1 L / min; And / or, the power of the heating module (30) is 2100W.

12. The control method of the water purification equipment according to claim 10, characterized in that: The water production system has a continuous boiled water branch, and along the water flow direction, the continuous boiled water branch is sequentially connected to the water supply module (10), the heating module (30), and the water outlet module (40), and the water purification device also has a boiled water continuous extraction mode; The control method further comprises the following steps: If a boiled water taking signal is received during the heat preservation process, and the water temperature T in the heat exchange module (20) is less than or equal to the set temperature T0, the water purification device is controlled to conduct the continuous boiled water taking branch to enter the boiled water continuous taking mode; Controlling the water supply module (10) to deliver purified water at room temperature to the heating module (30) according to the second set flow rate Q2, and heating the heating module (30) to 100° C. before providing it to users; The second set flow rate Q2 is smaller than the first set flow rate Q1.

13. The control method of the water purification equipment according to claim 12, characterized in that: The second set flow rate Q2 is 0.4 L / min.

14. The control method of the water purification equipment according to any one of claims 10 to 13, characterized in that: The insulation mode specifically includes: When it is detected that the water temperature T in the heat exchange module (20) is less than or equal to the set temperature T0, the heat preservation component is controlled to start heating the water in the heat exchange module (20), and the heating is stopped when it is detected that the water temperature in the heat exchange module (20) reaches 100°C.

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