Water production system and water purification equipment

Abstract

The utility model relates to the technical field of water purification, and discloses a water production system and water purification equipment, the water production system comprises: a water supply module having a purified water outlet and a circulating water inlet; the heat exchange module is provided with a hot water path and a cold water path which are mutually independent and can exchange heat; the outlet end of the heating module is respectively communicated with the inlet end of the hot water path and the water outlet module of the water production system; 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 the outlet end of the hot water path is selectively communicated with the water outlet module and the circulating water inlet. By means of the design, a heating body does not need to be additionally arranged in the heat exchange module, the heat preservation function of the heat exchange module can be achieved only through the original heating module of the system, the purposes of simplifying the structure and saving the cost can be achieved, and the problem that water purification equipment in the prior art needs to be additionally provided with a heating body to achieve the heat preservation function is effectively solved. And the cost is high.

Description

Technical Field

[0001] The utility model relates to the technical field of water purification, in particular to a water production system and water purification equipment. Background Art

[0002] To meet people's need for hot water at any time, many water purification devices on the market are equipped with instant heating faucets, creating integrated purification and heating units that can instantly provide boiled water at multiple temperatures. However, the flow rate of the boiling and boiled water settings is much lower than that of the normal temperature setting. This results in long wait times for users to obtain boiled or boiled water, and the low flow rate also lowers the water temperature during the water collection process, affecting the user experience. Therefore, to reduce user waiting time for water collection, existing water purification devices usually have insulation functions, which require additional heating elements to achieve this insulation function, which is costly. Utility Model Content

[0003] In view of this, the utility model provides a water production system and a water purification device to solve the problem that users of the water purification equipment in the prior art have to wait a long time to get boiled water or cooked water, and the related water purification equipment adopts an insulation design to reduce the waiting time for users to get water, which requires additional heating elements to achieve the insulation function and is costly.

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

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

[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 connected to the inlet end of the hot water circuit and the water outlet module of the water production system respectively;

[0008] The purified water outlet is selectively connected to the inlet of the cold water circuit and the inlet of the heating module, and the outlet of the hot water circuit is selectively connected to the water outlet module and the circulating water inlet.

[0009] Beneficial effect: The outlet end of the hot water circuit can be selectively connected to the water outlet module and the circulating water inlet. The hot water after heat exchange in the heat exchange module can be divided into two paths. The cooked water is output through the water outlet module for users to take, or it can be returned to the water supply module through the circulating water inlet to facilitate the realization of circulating heating and large-flow boiling water functions. When water is not being produced, the water production system can enter the insulation mode. During the insulation process, if it is monitored that the water temperature in the heat exchange module is lower than the set temperature, the circulation branch of the clean water outlet of the water supply module, the cold water circuit, the heating module, the hot water circuit, and the circulating water inlet of the water supply module, which are connected in series, can be controlled to be turned on, and the heating module can be controlled to heat up and enter the circulation heating mode to ensure that the water temperature in the heat exchange module is not lower than the set temperature. In this way, when the user takes boiled water or cooked water, the heat of the water inlet 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 reducing the waiting time for the user to take cooked water or boiled water, improving the user experience, and realizing large flow of boiled water or cooked water, avoiding problems such as small flow, long waiting time, and lower water temperature during the process of taking boiled water or cooked water. In addition, by setting up a circulating water inlet and adopting a design that selectively connects the outlet end of the hot water circuit to the circulating water inlet, there is no need to add an additional heating element in the heat exchange module. The insulation function of the heat exchange module can be achieved by using the original heating module of the system, which can achieve the purpose of simplifying the structure and saving costs. It effectively solves the problem that the water purification equipment with insulation function in the prior art needs to add an additional heating element to achieve the insulation function, which is costly.

[0010] In an optional embodiment, the outlet end of the hot water circuit is selectively connected to the water outlet module and the circulating water inlet through a first dual-channel solenoid valve.

[0011] Beneficial effect: By setting up the first dual-channel solenoid valve, it is convenient to control the hot water after heat exchange in the hot water circuit to enter the water outlet module to prepare cooked water of different temperatures, or to enter the water supply module to realize the circulation heating function, so as to ensure that the water temperature in the heat exchange module is not lower than the set temperature T0, so that the water coming out of the hot water circuit can be divided into two paths to return to the water purification pump for circulation, realizing large-flow boiling water, or directly flow into the water outlet module to output cooked water.

[0012] In an optional embodiment, the water supply module includes:

[0013] A clean water pump having a water inlet and a clean water outlet, wherein the water inlet is connected to an external water source through a water inlet pipeline;

[0014] The circulating water inlet is located on the water inlet pipeline, and the first outlet of the first dual-channel solenoid valve is connected to the circulating water inlet through a return pipeline.

[0015] Beneficial effect: The first dual-channel solenoid valve is a one-inlet and two-outlet solenoid valve, having a first inlet, a first outlet and a second outlet. The first inlet is connected to the outlet of the hot water circuit, the first outlet and the circulating water inlet are connected through a return pipe, and the second outlet is connected to the water outlet module through a pipe. 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 the circulating heating mode is in progress, the first dual-channel solenoid valve switches to the first state, connecting the circulating branch, and the hot water flowing out through the first outlet enters the clean water pump in turn through the return pipe, the circulating water inlet, and the water inlet pipe between the circulating water inlet and the water inlet, and is then pumped into the cold water circuit, the heating module and the hot water circuit of the heat exchange module through the clean water pump to realize circulating heating.

[0016] In an optional embodiment, the first dual-channel solenoid valve further has a first inlet and a second outlet;

[0017] The outlet of the hot water circuit is connected to the first inlet through a first pipeline, and the second outlet is connected to the water outlet module through a second pipeline.

[0018] 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 second dual-channel solenoid valve.

[0019] Beneficial effect: By setting up the second 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 channel of the heat exchange module, or directly enter the heating module for heating.

[0020] In an optional embodiment, the second dual-channel solenoid valve has a second inlet, a third outlet, and a fourth outlet;

[0021] The purified water outlet is connected to the second inlet via a third pipeline, the third outlet is connected to the inlet of the cold water circuit via a fourth pipeline, and the fourth outlet is connected to the inlet of the heating module via a fifth pipeline;

[0022] The outlet of the cold water circuit is connected to the fifth pipeline through the sixth pipeline.

[0023] Beneficial effect: The second dual-channel solenoid valve is a one-inlet, two-outlet type solenoid valve. The second dual-channel solenoid valve has a third state in which the second inlet is connected to the third outlet, and a fourth state in which the second inlet is connected to the fourth outlet. When in the circulation heating mode, the first dual-channel solenoid valve is switched to the first state and the second dual-channel solenoid valve is switched to the third state to connect the entire circulation branch. When in the circulation heating mode, by switching the second dual-channel solenoid valve to a state in which the clean water pump, the cold water circuit, and the heating module are connected, the circulating water can flow through the cold water circuit of the heat exchange module and then enter the heating module for heating. Compared with directly entering the heating module for heating through the fifth pipeline, heat loss is reduced, the heat in the heat exchange module can be fully utilized, and energy saving is achieved. The heating speed is faster and the insulation effect is better.

[0024] In an optional embodiment, the water outlet module includes:

[0025] water outlet;

[0026] A regulating valve is provided 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.

[0027] 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.

[0028] 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 channel of the heat exchange module, and is cooled after heat exchange with the normal temperature purified water in the cold water channel to form low-temperature cooked water, and 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 boiled water at different temperatures.

[0029] In an optional embodiment, the heat exchange module includes:

[0030] The heat exchange inner tube has an internal flow channel forming a hot water circuit;

[0031] The heat exchange outer tube is sleeved with the heat exchange inner tube, and the flow channel between the heat exchange inner tube and the heat exchange outer tube constitutes a cold water channel;

[0032] 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.

[0033] Beneficial Effects: The heat exchange module, based on a shell-and-tube heat exchanger structure, routes hot and cold fluids through inner and outer tubes, respectively. In normal boiled water mode, hot water flows through the inner heat exchange tube, while cooling water flows through the outer heat exchange tube, achieving instant cooling and, in turn, contactless heat exchange between the two fluids to change their temperature. In high-flow boiling water mode, normal-temperature water flows through the outer heat exchange tube and preheats the temperature by heat exchange with the inner heat exchange tube. By designing the inner diameter d1 of the outer heat exchange tube and the inner diameter d2 of the inner heat exchange tube within a ratio of 3.5d2≥d1≥2.5d, the heat exchange module not only enables heat exchange, but also significantly increases its water storage capacity, allowing it to serve as a water tank or hot water tank for water storage. The heat exchange module integrates water storage and heat exchange functions, offering multiple uses and further simplifying its structure.

[0034] In an optional embodiment, the heating module includes a heating element and a first temperature sensing package, and the first temperature sensing package is used to detect the heating temperature of the heating element.

[0035] Beneficial effect: The first temperature sensing package can monitor the heating temperature of the heating element, thereby avoiding the problem of not being able to discover in time when the heating temperature of the heating element is abnormal.

[0036] In an optional embodiment, the heat exchange module further includes a second temperature sensing package, which is used to detect the temperature of the water stored in the heat exchange module.

[0037] Beneficial effect: The second temperature sensing package can monitor the water temperature in the heat exchange module, ensuring that the water temperature in the heat exchange module is not lower than the set temperature in the insulation mode.

[0038] In a second aspect, the present invention further provides a water purification device, comprising a water production system according to any one of the above embodiments, wherein the water production system comprises a circulation branch, a high-flow boiled water branch, and a continuous boiled water branch, wherein along the water flow direction: the circulation branch is sequentially connected to the purified water outlet of the water supply module, the cold water channel, the hot water channel of the heating module, and the circulating water inlet of the water supply module; the high-flow boiled water branch is sequentially connected to the water supply module, the cold water channel, the heating module, and the water outlet module; the continuous boiled water branch is sequentially connected to the water supply module, the heating module, and the water outlet module;

[0039] The water purification equipment has a circulation heating mode, a large-flow boiling water mode, and a continuous boiling water extraction mode. When the water purification equipment is in the circulation heating mode, the circulation branch is in a conductive state; when the water purification equipment is in the large-flow boiling water mode, the large-flow boiling water branch is in a conductive state; when the water purification equipment is in the continuous boiling water extraction mode, the continuous boiling water extraction branch is in a conductive state. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the specific implementation methods of the utility model 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 utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0041] Figure 1 This is a schematic diagram of the principles of each module of the water production system in the embodiment of the present utility model;

[0042] Figure 2 This is a detailed structural diagram of each module of the water production system in the embodiment of the present utility model;

[0043] Figure 3 Schematic diagram of the water flow direction when the high-flow boiling water branch of the water system is connected when the water purification device is in the high-flow boiling water mode in the embodiment of the present utility model (the dotted line in the figure represents the high-flow boiling water branch);

[0044] Figure 4 Schematic diagram of the water flow direction when the circulation branch of the water system is opened when the water purification device is in the circulation heating mode in the embodiment of the present utility model (the dotted line in the figure is the circulation branch);

[0045] Figure 5 Schematic diagram of the water flow direction when the continuous boiled water branch of the water system of the water purification device in the embodiment of the utility model is opened in the continuous boiled water mode (the dotted line in the figure is the continuous boiled water branch);

[0046] Figure 6 Schematic diagram of the water flow direction of the water purification device in the embodiment of the present utility model when it is in the zero cold water and cooked water preparation mode (the dotted line in the figure is the water path that is conducted in the zero cold water and cooked water preparation mode);

[0047] Figure 7 This is a schematic structural diagram of the heat exchange module in an embodiment of the present utility model.

[0048] Description of reference numerals:

[0049] 10. Water supply module; 101. Clean water outlet; 102. Circulating water inlet; 11. Clean water pump; 12. Water inlet pipe; 13. Return pipe;

[0050] 20. Heat exchange module; 21. Hot water circuit; 22. Cold water circuit; 201. Heat exchange outer tube; 2010. Serpentine channel; 202. Heat exchange inner tube;

[0051] 30. Heating module; 31. Heating element; 32. First temperature sensing package;

[0052] 40. Water outlet module; 41. Regulating valve; 42. Water outlet nozzle;

[0053] 50. First dual-channel solenoid valve;

[0054] 60. Second dual-channel solenoid valve;

[0055] 1a, first pipeline; 2a, second pipeline; 3a, third pipeline; 4a, fourth pipeline; 5a, fifth pipeline; 6a, sixth pipeline; 7a, seventh pipeline; 8a, eighth pipeline; 9a, ninth pipeline. DETAILED DESCRIPTION

[0056] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions 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 embodiments described 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 making creative efforts shall fall within the scope of protection of the present invention.

[0057] In the context of the big health industry, household water purifiers are equipped with instant hot water faucets to meet people's demand for hot water at any time, creating an all-in-one water purifier and heat machine based on water purification equipment. Since the maximum current of general non-air conditioning sockets is limited to 10A, the power of the entire machine can only be limited to 2200W. The boiling water flow rate of the instant hot water faucet is only 400mL / min, which is much smaller than the 1.0L / min of high-flow water purifiers. Users have long waiting times when getting boiling water, which is a poor user experience. 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 excessive cold water volume during the heating process.

[0058] Related patents disclose a heat and water all-in-one system that can increase the flow rate of boiled water by storing heat. Water of different temperatures is heated to the required temperature using room temperature water without the steps of boiling and then 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 meeting the habit of Chinese people to drink cold boiled water. It has certain advantages both in terms of technology and application prospects.

[0059] Currently available desktop water dispensers can instantly provide boiled water at multiple temperatures, but their instant boiling water flow rate is limited to 400 ml / min. Compared to the normal temperature flow rate of 1.0 L / min, the waiting time for users to get boiled water is doubled. Furthermore, the low-flow boiling water dispensing process causes the water temperature to drop by about 10°C, resulting in a long waiting time and low water temperature when the user dispenses water, which affects the user experience. Therefore, this embodiment develops a water production system and water purification equipment with a high-flow boiling water function to improve the user experience.

[0060] The following combination Figures 1 to 7 , describing the embodiments of the present utility model.

[0061] 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 and a circulating water inlet 102; 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; 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 the outlet end of the hot water waterway 21 is selectively connected to the water outlet module 40 and the circulating water inlet 102.

[0062] In the above embodiment, the outlet end of the hot water circuit 21 can be selectively connected to the water outlet module 40 and the circulating water inlet 102. The hot water after heat exchange in the heat exchange module 20 can be divided into two paths, and the cooked water can be output through the water outlet module 40 for users to take, or returned to the water supply module 10 through the circulating water inlet 102 to facilitate the realization of circulating heating and large-flow boiling water functions. When water is not being produced, the water production 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 circulation branch of the clean water outlet 101 of the water supply module 10, the cold water channel 22, the heating module 30, the hot water channel 21, and the circulating water inlet 102 of the water supply module 10, which are connected in series, can be controlled to be turned on, and the heating module 30 can be controlled to heat up and enter the circulation heating mode to ensure that the water temperature in the heat exchange module 20 is not lower than the set temperature. In this way, when the user takes boiled water or cooked water, the heat of the water inlet of the heating 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 reducing the waiting time for the user to take cooked water or boiled water, improving the user experience, and realizing large flow of boiled water or cooked water, avoiding problems such as small flow, long waiting time, and lower water temperature during the process of taking boiled water or cooked water. In addition, by setting up the circulating water inlet 102 and adopting the design of selectively connecting the outlet end of the hot water waterway 21 to the circulating water inlet 102, there is no need to add an additional heating element 31 in the heat exchange module 20. The heat preservation function of the heat exchange module 20 can be achieved by only using the original heating module 30 of the system, which can achieve the purpose of simplifying the structure and saving costs. It effectively solves the problem that the water purification equipment with insulation function in the prior art needs to add an additional heating element 31 to achieve the insulation function, which is costly.

[0063] In some embodiments, the heat exchange module 20 includes a heat exchange inner tube 202 and a heat exchange outer tube 201, and the internal flow channel of the heat exchange inner tube 202 constitutes a hot water water channel 21; the heat exchange inner tube 202 is inserted into 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 water channel 22; 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.

[0064] In the above embodiment, the heat exchange module 20 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 interior of the heat exchange inner tube 202, while cooling water passes through the heat exchange outer tube 201, achieving instant cooling and, in turn, achieving non-contact heat exchange and temperature change between the two fluids. In high-flow boiling water mode, normal-temperature water passes through the heat exchange outer tube 201 and is preheated by heat exchange with the heat exchange inner tube 202. 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 a ratio range of 3.5d2≥d1≥2.5d, the heat exchange module 20 is not only capable of heat exchange, but also has a significantly increased water storage capacity. It can also be used as a water tank or hot tank for water storage. The heat exchange module 20 integrates water storage and heat exchange functions in one, providing multiple uses and further simplifying the structure.

[0065] 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.

[0066] In some embodiments, combined Figure 1 、 Figure 7 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 interlocked with each other. 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 flow channel. There is a set gap between the serpentine channel 2010 and the heat exchange inner tube 202, and the gap constitutes the cold water channel 22.

[0067] 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 heat exchanged by the heat exchange module 20 and then mixed with the boiled water directly coming out of the heating module 30 to a set temperature for the user to use; 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 channel 22, the heating module 30, the hot water channel 21, and the circulating water inlet 102 of the water supply module 10 in sequence to achieve the insulation function.

[0068] In some embodiments, the outlet end of the hot water circuit 21 is selectively connected to the water outlet module 40 and the circulating water inlet 102 via a first dual-channel solenoid valve 50 .

[0069] In the above embodiment, by setting up the first dual-channel solenoid valve 50, it is convenient to control the hot water after heat exchange in the hot water water circuit 21 to enter the water outlet module 40 to prepare cooked water of different temperatures, or to enter the water supply module 10 to realize the circulation heating function, so as to ensure that the water temperature in the heat exchange module 20 is not lower than the set temperature T0, so that the water coming out of the hot water water circuit 21 can be divided into two paths and returned to the water purification pump 11 for circulation, realizing a large flow of boiled water, or directly flow into the water outlet module 40 to output cooked water.

[0070] 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. The water inlet is connected to an external water source through an inlet pipe 12; the circulating water inlet 102 is located on the inlet pipe 12, and the first outlet of the first dual-channel solenoid valve 50 is connected to the circulating water inlet 102 through a return pipe 13.

[0071] In the above embodiment, the first dual-channel solenoid valve 50 is a one-inlet and two-outlet solenoid valve having a first inlet, a first outlet and a second outlet. The first inlet is connected to the outlet of the hot water circuit 21, the first outlet and the circulating water inlet 102 are connected through a return pipe 13, and the second outlet is connected to the water outlet module 40 through a pipe. The first dual-channel solenoid valve 50 has a first state in which the first inlet and the first outlet are connected, and a second state in which the first inlet and the second outlet are connected. When the circulation heating mode is in progress, the first dual-channel solenoid valve 50 switches to the first state, connecting the circulation branch, and the hot water flowing out through the first outlet enters the clean water pump 11 in sequence through the return pipe 13, the circulating water inlet 102, and the water inlet pipe 12 between the circulating water inlet 102 and the water inlet, and then is pumped into the cold water circuit 22, the heating module 30, and the hot water circuit 21 of the heat exchange module 20 through the clean water pump 11 to realize circulation heating. The entire circulation branch is heated by the boiling water circulated by the heating module 30 through the provided reflux pipe 13 to ensure the temperature of the water stored in the heat exchange module 20 .

[0072] 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.

[0073] In some embodiments, the first dual-channel solenoid valve 50 further has a first inlet and a second outlet; the outlet of the hot water circuit 21 is connected to the first inlet through a first pipe 1a, and the second outlet is connected to the water outlet module 40 through a second pipe 2a.

[0074] In some embodiments, the purified water outlet 101 is selectively connected to the cold water channel 22 and the inlet end of the heating module 30 via a second dual-channel solenoid valve 60 .

[0075] In the above embodiment, the second dual-channel solenoid valve 60 is provided to facilitate switching and controlling the water flowing out of the clean water outlet 101 of the water supply module 10 to enter the cold water path 22 of the heat exchange module 20, or directly enter the heating module 30 for heating.

[0076] In some embodiments, the second dual-channel solenoid valve 60 has a second inlet, a third outlet and a fourth outlet; the clean water outlet 101 is connected to the second inlet through a third pipeline 3a, the third outlet is connected to the inlet of the cold water circuit 22 through a fourth pipeline 4a, and the fourth outlet is connected to the inlet of the heating module through a fifth pipeline 5a; the outlet of the cold water circuit 22 is connected to the fifth pipeline 5a through a sixth pipeline 6a.

[0077] In the above embodiment, the second dual-channel solenoid valve 60 is a one-inlet, two-outlet solenoid valve. The second dual-channel solenoid valve 60 has a third state in which the second inlet and the third outlet are conductive, and a fourth state in which the second inlet and the fourth outlet are conductive. In the circulation heating mode, the first dual-channel solenoid valve 50 is switched to the first state and the second dual-channel solenoid valve 60 is switched to the third state to open the entire circulation branch. In the circulation heating mode, by switching the second dual-channel solenoid valve 60 to a state in which the clean water pump 11, the cold water path 22, and the heating module 30 are conductive, the circulating water can flow through the cold water path 22 of the heat exchange module 20 before entering the heating module 30 for heating. Compared with directly entering the heating module 30 for heating through the fifth pipe 5a, this reduces heat loss, fully utilizes the heat in the heat exchange module 20, achieves energy conservation, and achieves faster heating and better insulation.

[0078] 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 and a second regulating water inlet, as well as 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.

[0079] In the above embodiment, through the regulating valve 41 provided, 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 channel 21 of the heat exchange module 20, and is cooled by heat exchange with the normal temperature purified water in the cold water channel 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 boiled water at different temperatures.

[0080] Specifically, the regulating valve 41 is a stepless regulating valve. The outlet of the heating module 30 is connected to the second regulating water inlet via a seventh pipe 7a, which is in turn connected to the inlet of the hot water circuit 21 via an eighth pipe 8a. Water heated in the heating module 30 can flow through the seventh pipe 7a to the regulating valve 41, or it can flow through the eighth pipe 8a to the hot water circuit 21 for cooling before flowing through the second pipe 2a to the regulating valve 41. The regulating valve 41 controls the proportion of water flowing into the eighth pipe 8a, or hot water circuit 21. For example, the water heated in the heating module 30 can be controlled to flow entirely into the eighth pipe 8a, where it is cooled by the heat exchange module 20 before flowing out of the water outlet module 40 for user use. Alternatively, half of the water can be controlled to flow through the seventh pipe 7a to the water outlet 42, while the other half flows through the eighth pipe 8a to the heat exchange module 20 for cooling. The regulating water outlet and the water outlet nozzle 42 are connected via a ninth pipe 9a.

[0081] In some embodiments, the heating module 30 includes a heating element 31 and a first temperature sensing package 32, the first temperature sensing package 32 is used to detect the heating temperature of the heating element 31; and / or, the heat exchange module 20 also includes a second temperature sensing package, the second temperature sensing package is used to detect the water temperature in the heat exchange module 20.

[0082] In the above embodiment, the first temperature-sensing package 32 is provided to monitor the heating temperature of the heating element 31, thereby preventing the problem of not being able to promptly detect abnormalities in the heating temperature of the heating element 31. The second temperature-sensing package is provided to monitor the temperature of the water stored in the heat exchange module 20, ensuring that the temperature of the water stored in the heat exchange module 20 does not fall below the set temperature when in the insulation mode.

[0083] Preferably, the heating module 30 is an instant heating element 31, which has the functions of rapid, stable heating and adjustable power. After purified water with different parameters is input into the heating element 31, the control system starts the heating element 31 according to the sensor parameters and adjusts the corresponding power parameters to heat the purified water to boiling point.

[0084] Specifically, the heating element 31 includes a heating tube with a heating channel therein. Water is heated as it flows through the heating channel. A first temperature-sensing package 32 is disposed downstream of the heating element 31. A second temperature-sensing package can be disposed in the outer heat exchange tube 201 or the inner heat exchange tube 202, or at a location such as the water outlet of the outer heat exchange tube 201 or the inner heat exchange tube 202. Alternatively, in some more preferred embodiments, two second temperature-sensing packages are provided, one in each of the outer heat exchange tube 201 and the other in each of the inner heat exchange tubes 202. The water storage temperature or real-time temperature of the heat exchange module 20 is based on the average of the temperatures detected by the two second temperature-sensing packages, resulting in more accurate temperature measurement.

[0085] The specific structure and principle of the water production system of this embodiment are introduced below with reference to the accompanying drawings.

[0086] 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.

[0087] Specifically, the water supply module 10, the heating module 30, and the heat exchange module 20 have one or more water inlet and outlet ends. 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. The clean water outlet 101 is connected to the second dual-channel solenoid valve 60. One outlet of the second dual-channel solenoid valve 60 is connected to the inlet of the cold water circuit 22 of the heat exchange module 20. The outlet of the cold water circuit 22 is connected to the water inlet of the heating module 30. The heating module 30 The first water outlet is connected to the inlet of the hot water circuit 21 of the heat exchange module 20, the second water outlet of the heating module 30 is connected to the second regulating water inlet of the regulating valve 41, and the outlet of the heat exchange inner tube 202 is connected to the circulating water inlet 102 of the water purification pump 11 through the first dual-channel solenoid valve 50. The boiling water circulation can be used to heat the entire pipeline to ensure that the stored water temperature is boiling water. The heat exchange inner tube 202 is connected to the first regulating water inlet through the first dual-channel solenoid valve 50, and the water outlet of the regulating valve 41 is connected to the water outlet 42 of the whole machine.

[0088] 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 a non-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 nozzle 42 through a transportation 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 nozzle 42; ... The raw water is purified to meet drinking water standards. The purification system can have a single or combined pretreatment module and deep treatment module. Pretreatment achieves preliminary filtration of the water to remove pollutants such as sediment, rust, and residual chlorine. It can be a combination or composite 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, and the activated carbon filter element can be a granular activated carbon, carbon fiber, or carbon rod filter element. The deep treatment module achieves deep filtration to remove heavy metals, microorganisms, and other toxic and harmful substances from the water. It can be a combination of ultrafiltration, nanofiltration, or reverse osmosis filtration modules. The room temperature outlet water of the purification system is transported to the water inlet of the heating module 30 and the cooling water inlet of the heat exchange module 20 respectively through a conveying device and a dual-channel solenoid valve.

[0089] Furthermore, the heat exchange module 20 can 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, the water inlet end of the heat exchange inner tube 202 and the water inlet end of the heat exchange outer tube 201 are respectively input with boiling clean water and multi-temperature clean water, and the boiling clean water and the multi-temperature clean water are separated by heat-conducting materials. 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 (such as flow rate, contact time, etc.) of the heat exchange module 20 and the power of the heating element 31 and the opening and closing degree of the regulating valve 41 by detecting the corresponding clean water parameters (such as water temperature, flow rate, etc.) and multi-temperature clean water parameters (temperature, volume, etc.), so as to realize 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. The 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. When the boiled water function is used, the hot water passes through the hot water channel 21 inside the shell, and the cooling water passes through the hot water channel 21 outside the shell, achieving instant cooling. When the high-flow boiling water function is used, the normal temperature water passes through the cold water channel 22 and exchanges heat with the hot water stored in the hot water channel 21 to achieve instant preheating and temperature rise.

[0090] Furthermore, the heating module 30 includes a power-adjustable heating element 31. This element can be a PTC heater, a rare earth thick film heater, or a metal heating tube. This heat causes the purified water in contact with the heating element 31 to boil. The heating power of the heating element 31 is controlled and adjusted by the control module based on the detected sensor parameters. The system can adjust the power of the heating element 31 or the pump flow rate to change the water inlet temperature of the heat exchange inner tube 202, achieving a continuous supply of cooked water.

[0091] Furthermore, the water supply module 10 provides normal temperature purified water 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 in the heating module 30, a portion flows through the regulating valve 41 to the outlet of the water outlet nozzle 42, and the other portion is input into the water inlet end of the heat exchange inner tube 202. After heat exchange with the normal temperature purified water in the heat exchange module 20 and cooling, it flows through the regulating valve 41 to the outlet of the water outlet nozzle 42. The low-temperature cooked water and boiled water are mixed in a controlled ratio by the regulating valve 41 to meet the user's different boiled water temperature requirements. The control system collects relevant sensor parameters based on the user's boiled water requirements of different temperatures and flows, and then controls the water supply parameters, heating parameters, and heat exchange parameters to achieve the required boiled water output.

[0092] Furthermore, the control module senses the operating parameters and environmental parameters of various sensors (for example, the first temperature-sensing package 32 provided at the heating module 30, the second 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 entire system). It also selects different control logics based on user needs, starts and stops the corresponding conveying equipment, and adjusts the operating parameters of different modules to ensure that the output of boiled water meets user needs. The control module can control the output power or start-up 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 heating element 31, etc., to achieve functions such as high-flow boiled water and cooked water supply.

[0093] According to an embodiment of the present invention, on the other hand, a water purification device is provided, including a water production system according to any of the above embodiments, the water production system having a circulation branch, a large flow boiling water branch and a continuous boiling water branch, along the water flow direction: the circulation branch is sequentially connected to the purified water outlet 101 of the water supply module 10, the cold water channel 22, the heating module 30, the hot water channel 21, and the circulating water inlet 102 of the water supply module 10; the large flow boiling water branch is sequentially connected to the water supply module 10, the cold water channel 22, the heating module 30, the hot water channel 21, and the circulating water inlet 102 of the water supply module 10 0, water outlet module 40; the continuous boiled water branch is connected to the water supply module 10, the heating module 30, and the water outlet module 40 in sequence; the water purification equipment has a circulation heating mode, a large-flow boiled water mode, and a boiled water continuous extraction mode. When the water purification equipment is in the circulation heating mode, the circulation branch is in a conductive state; when the water purification equipment is in the large-flow boiled water mode, the large-flow boiled water branch is in a conductive state; when the water purification equipment is in the boiled water continuous extraction mode, the continuous boiled water branch is in a conductive state.

[0094] Specifically, the fifth pipeline 5a includes a first pipeline section located between the second dual-channel solenoid valve 60 and the sixth pipeline 6a, and a second pipeline section located between the sixth pipeline 6a and the heating module 30. The seventh pipeline 7a includes a first pipeline section located between the heating module 30 and the eighth pipeline 8a, and a second pipeline section located between the eighth pipeline 8a and the regulating valve 41. The circulation branch sequentially connects the clean water outlet 101 of the clean water pump 11, the second dual-channel solenoid valve 60, the cold water circuit 22, the heating module 30, the hot water circuit 21, the first dual-channel solenoid valve 50, and the circulating water inlet 102 of the clean water pump 11. Specifically, in combination Figure 2 and 4 As shown, the circulation branch includes a third pipeline 3a, a fourth pipeline 4a, a sixth pipeline 6a, a second section of the fifth pipeline 5a, a first section of the seventh pipeline 7a, an eighth pipeline 8a, a first pipeline 1a and a return pipeline 13, as well as a water inlet pipeline 12 located between the circulating water inlet 102 and the clean water pump 11.

[0095] Further, combined with Figure 2 and Figure 3 As shown, the large-flow boiling water branch is connected in sequence to the water inlet of the water purification pump 11, the second dual-channel solenoid valve 60, 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 includes the water inlet pipe 12, the third pipe 3a, the fourth pipe 4a, the sixth pipe 6a, the second pipe section of the fifth pipe 5a, the seventh pipe 7a, and the ninth pipe 9a.

[0096] Further, combined with Figure 2 and Figure 5 As shown, the continuous boiling water branch is connected in sequence to the water inlet of the water purification pump 11, the second dual-channel solenoid valve 60, the heating module 30, the regulating valve 41, and the water outlet 42. Specifically, along the direction of water flow, the continuous boiling water branch includes the water inlet pipe 12, the third pipe 3a, the fifth pipe 5a, the seventh pipe 7a, and the ninth pipe 9a.

[0097] According to an embodiment of the present invention, on the other hand, a control method for the above-mentioned water purification equipment is provided, Figures 1 to 4 As shown, the control method includes the following steps:

[0098] Step S101: Entering the heat preservation mode, controlling the water temperature T in the heat exchange module 20 to be maintained above the set temperature T0;

[0099] Step S102: If the stored water temperature T is monitored to be less than the set temperature T0 during the heat preservation process, the water purification device is controlled to open the circulation branch and the heating module 30 is controlled to start, entering the circulation heating mode;

[0100] Step S103: If a water-taking signal is received during the heat preservation process and the stored water temperature T is detected to be greater than the set temperature T0, the water purification device is controlled to open the high-flow boiling water branch and enter the high-flow boiling water mode;

[0101] Step S104: Control the water supply module 10 to deliver the room temperature purified water to the cold water channel 22 according to the first set flow rate Q1, and exchange heat with the hot water in the hot water channel 21 to raise the temperature to T0, and then heat it to 100°C through the heating module 30 and deliver it to the water outlet module for users to take.

[0102] In the above embodiment, in the insulation mode, the temperature of the water stored in the heat exchange module 20 and the air heat transfer temperature decreases. In this mode, all components are inactive. When the water temperature in the heat exchange module 20 drops to the set temperature T0, the circulation branch is opened, and the circulating heating mode is entered, thereby ensuring that the water stored in the heat exchange module 20 does not fall below the temperature T0, making it convenient for users to access boiled water. By reusing the heat exchanged heat, the user's waiting time for boiled water can be shortened. When dispensing boiled water, a specific algorithm is used to control parameters such as the water supply flow rate of the water purification pump 11 and the heating power of the heating module 30, taking into account the stored water temperature and the temperature of the heating module 30, to achieve continuous high-flow boiled water dispensing, thus solving the problem of low boiled water flow.

[0103] In this embodiment, when the water purification equipment is in the insulation mode, the water supply module 10 and the heating module 30 do not work; when the water storage temperature T in the heat exchange module 20 is monitored to be ≤ the set temperature T0, the water supply module 10 and the heating module 30 work and enter the circulation heating mode.

[0104] 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.

[0105] 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 boiled to 100°C through the 2100w heating element 31 and flows out, realizing 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.

[0106] Specifically, when the user takes water, the second temperature sensing package detects that the water temperature of the heat exchange module 20 is greater than 70°C, the second dual-channel solenoid valve 60 and the regulating valve 41 are switched to the large-flow boiled water branch, and the clean water pump 11 pushes the normal temperature clean water into the heat exchange outer tube 201 at a flow rate of 1L / min to exchange heat with the hot water in the heat exchange inner tube 202 and raise the temperature to 70°C, and then the water is heated to 100°C by the 2100w heating element 31 and flows out as boiled water. Since the highest water temperature in the heat exchange inner tube 202 is 100°C boiled water during the circulating heating process, it can effectively ensure that the normal temperature water in the heat exchange outer tube 201 and the boiled water in the heat exchange inner tube 202 can be heated to 70°C after heat exchange.

[0107] 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 extraction 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, the heating power of the heating element 31 and other parameters are controlled through a specific algorithm to achieve continuous water extraction with a large flow of more than 1.0L / min, thereby solving the problem of small boiled water flow.

[0108] In some embodiments, combined Figure 1 、 Figure 2 、 Figure 5 As shown, the water production 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 water purification device also has a boiled water continuous extraction mode;

[0109] The control method further comprises the following steps:

[0110] Step S201: If a boiling water extraction signal is received during the heat preservation process and the stored water temperature T is detected to be less than or equal to the set temperature T0, the water purification device is controlled to open the continuous boiling water extraction branch and enter the continuous boiling water extraction mode;

[0111] Step S202: Control the water supply module 10 to deliver the purified water at room temperature to the heating module 30 at the second set flow rate Q2, and heat the heating module 30 to 100° C. before providing it to the user;

[0112] The second set flow rate Q2 is smaller than the first set flow rate Q1.

[0113] In the above embodiment, when a user's request for 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 deliver pure water at a relatively small flow rate Q2 directly from the fifth pipeline 5a to the flow heating module 30 for heating to the boiling point for the user to use, thereby achieving the effect of continuous boiled water and avoiding the problem of intermittent boiled water. The water purification device provided in this embodiment has continuous water supply, which can solve the problem of multiple people having to wait for water to be disconnected and the poor user experience.

[0114] Furthermore, 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 it at a power of 2100w, and the flow rate of the water purification pump 11 is 0.4L / min. Specifically, when the user extracts boiled water, when the second temperature sensing package detects that the water temperature in the heat exchange module 20 is ≤70°C, the second dual-channel solenoid valve 60 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 heating element 31 at a flow rate of 0.4L / min to heat it to 100°C and the boiled water flows out.

[0115] In some embodiments, the cyclic heating mode specifically includes:

[0116] The water supply module 10 is controlled to drive the water in the cold water channel 22 and the hot water channel 21 to circulate into the heating module 30 for heating according to the third set flow rate Q3 until the water temperature in the cold water channel 22 and the hot water channel 21 reaches 100°C and the heating is stopped.

[0117] In the above embodiment, during the insulation process, when it is detected that the water temperature of the heat exchange module 20 is ≤70°C, the circulation heating mode is entered, and the water purification pump 11 pushes the hot water in the heat exchange module 20 into the heating element 31 at a flow rate of 1L / min. After being heated to 100°C by the heating element 31, it circulates through the cold water channel 22 and the hot water channel 21 in turn, thereby raising the water temperature of the heat exchange module 20 to 100°C, making it convenient for subsequent users to take boiled water or cooked water in large flow rates.

[0118] Specifically, when the user does not take water, when the second temperature sensing package detects that the water stored in the heat exchange outer tube 201 of the heat exchange module 20 is ≤70℃, the first dual-channel solenoid valve 50 and the second dual-channel solenoid valve 60 are both cut into the circulation branch, and the clean water pump 11 draws and pushes 70℃ hot water in the inner and outer tubes at a flow rate of 1L / min, and heats it to 100℃ boiling water through the 2100w heating element 31, and then circulates and heats the water in the inner and outer tubes until all the water is 100℃ and stops heating.

[0119] In some embodiments, combined Figure 1 and Figure 6 As shown, the control method further includes the following steps:

[0120] Step S301: If a cooked water preparation signal is received during the heat preservation process, the second dual-channel solenoid valve 60 is controlled to connect the cold water path 22 and the heating module 30, and the first dual-channel solenoid valve 50 is controlled to connect the outlet end of the hot water path 21 and the water outlet module 40, thereby entering the zero cold water cooked water preparation mode;

[0121] Step S302: Control the water supply module 10 to transport the external water to the heating module 30 through the cold water channel 22 of the heat exchange module 20, and heat the water to 100° C. through the heating module 30;

[0122] Step S303: Control a portion of the heated boiled water to flow into the hot water channel 21 for heat exchange cooling, and the other portion directly flows into the water outlet module 40 and is adjusted to the target temperature with the cooked water flowing out of the hot water channel 21 for user use.

[0123] In the above embodiment, the outlet end of the hot water circuit 21 can be selectively connected to the water outlet module 40 and the circulating water inlet 102. The hot water after heat exchange in the heat exchange module 20 can be divided into two paths. The cooked water can be output through the water outlet module 40 for the user to take, or it can be returned to the water supply module 10 through the circulating water inlet 102 to facilitate the circulating heating and heat preservation function. When water is not being produced, the water purification device can enter the heat preservation mode. During the heat preservation process, if it is monitored that the water temperature in the heat exchange module 20 is less than or equal to the set temperature, the outlet end of the hot water circuit 21 can be controlled to switch to a state of being connected to the circulating water inlet 102, and the heating module 30 can be controlled to heat and enter the circulating heating mode to ensure that the water temperature in the heat exchange module 20 is maintained above the set temperature T0. In this way, when the user takes cooked water, since the water temperature in the cold water circuit 22 and the hot water circuit 21 is above T0, there is no cold water in the heat exchange module 20. When preparing cooked water, normal temperature water is pushed into the cold water circuit. After heat exchange with the hot water channel 21, 22 is pushed out and heated by the heating module 30. After heating by the heating module 30, the boiling water is pushed into the hot water channel 21 containing hot water, which can ensure a large flow rate without cold water throughout the process. It can not only shorten the heating time of the heating module 30 and reduce the waiting time for users to get water, but also avoid the problem of low water outlet temperature caused by cold water mixed in the hot water channel 21 of the heat exchange module 20 when preparing cooked water, ensuring that the first cup of water taken by the user is at the set temperature, improving the user experience, and effectively solving the problem of low temperature when the user takes the first cup of cooked water, affecting the user experience.

[0124] In addition, by setting up a circulating water inlet 102 and adopting a design in which the outlet end of the hot water waterway 21 can be selectively connected to the circulating water inlet 102, there is no need to add an additional preheating structure in the heat exchange module 20 or the water supply pipeline. Only the original heating module 30 of the system can be used to achieve the insulation function of the heat exchange module 20, ensuring that there is no cold water in the water path of the heat exchange module 20, which can achieve the purpose of simplifying the structure and saving costs, and effectively solves the problem in the prior art that zero cold water water purification equipment requires an additional preheating structure, resulting in a complex structure and high cost of the whole machine.

[0125] In some embodiments, the zero cold water cooked water preparation mode further includes the following steps:

[0126] Step S401: Control the water supply module 10 to deliver the normal temperature purified water to the cold water channel 22 at the third set flow rate Q3 to exchange heat with the hot water in the hot water channel 21. The water after heat exchange is heated to 100° C. by the heating module 30.

[0127] Step S402: Control a portion of the boiled water heated by the heating module 30 to flow into the hot water channel 21 to cool to 45°C, and the other portion and the 45°C cooked water flowing out of the hot water channel 21 are adjusted to the target temperature by the regulating valve 41 and then provided to the user.

[0128] In the above embodiment, the water temperature is kept above the set temperature by monitoring the heat exchange module 20. When preparing cooked water, the water supply module 10 pushes the normal temperature water into the cold water channel 22 according to the third set flow rate Q3 to exchange heat with the hot water in the hot water channel 21. The water after heat exchange is heated to 100°C by the heating module 30. Since the normal temperature water is heat-exchanged with the hot water in the hot water channel 21 and the cold water channel 22 also stores hot water above the set temperature, the water temperature entering the heating module 30 will increase, thereby shortening the heating module 30. 0 The time it takes to boil water is reduced, and since the hot water channel 21 of the heat exchange module 20 also stores hot water above the set temperature, the hot water stored in the hot water channel 21 will be pushed out when boiling water is introduced, thereby effectively ensuring that there is no cold water in the entire process of preparing cooked water, avoiding the problem of low outlet water temperature caused by residual cold water in the water channel when preparing cooked water, improving the user experience, and overcoming the problem in the existing instant water purification equipment that the residual water causes the first cup of cooked water taken by the user to be low in temperature, small in flow rate, and wastes time.

[0129] Optionally, the third set flow rate Q3 is 0.3 L to 2.0 L / min.

[0130] The heat exchange module 20 provided in this embodiment has water storage and heat exchange functions, 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 boiled water and cooked water, which is in line with the drinking water habits of Chinese people. In addition, the water is taken continuously, which can solve the problem of multiple people getting boiled water or cooked water and having to wait.

[0131] 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 fall within the scope of protection 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) and a circulating water inlet (102); The heat exchange module (20) has a hot water circuit (21) and a cold water circuit (22) that 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; The purified 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 the outlet end of the hot water circuit (21) is selectively connected to the water outlet module (40) and the circulating water inlet (102).

2. The water production system according to claim 1, characterized in that: The outlet end of the hot water circuit (21) is selectively connected to the water outlet module (40) and the circulating water inlet (102) via a first dual-channel electromagnetic valve (50).

3. The water production system according to claim 2, 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); The circulating water inlet (102) is located on the water inlet pipeline (12), and the first outlet of the first dual-channel solenoid valve (50) is connected to the circulating water inlet (102) via a return pipeline (13).

4. The water production system according to claim 3, characterized in that: The first dual-channel solenoid valve (50) also has a first inlet and a second outlet; The outlet of the hot water circuit (21) is connected to the first inlet via a first pipeline (1a), and the second outlet is connected to the water outlet module (40) via a second pipeline (2a).

5. The water production system according to any one of claims 1 to 4, characterized in that: The purified water outlet (101) is selectively connected to the cold water circuit (22) and the inlet end of the heating module (30) via a second dual-channel solenoid valve (60).

6. The water production system according to claim 5, characterized in that: The second dual-channel solenoid valve (60) has a second inlet, a third outlet and a fourth outlet; The purified water outlet (101) is connected to the second inlet via a third pipeline (3a), the third outlet is connected to the inlet of the cold water circuit (22) via a fourth pipeline (4a), and the fourth outlet is connected to the inlet of the heating module (30) via a fifth pipeline (5a); The outlet of the cold water circuit (22) is connected to the fifth pipeline (5a) via a sixth pipeline (6a).

7. 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), arranged upstream of the water outlet nozzle (42), for regulating the outlet water temperature of the water outlet nozzle (42), the regulating valve (41) having a first regulating water inlet, a second regulating water inlet, and a regulating water outlet; 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).

8. The water production system according to any one of claims 1 to 4, characterized in that: The heat exchange module (20) comprises: a heat exchange inner tube (202), wherein the inner flow passage thereof 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 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.

9. The water production system according to any one of claims 1 to 4, characterized in that: The heating module (30) comprises a heating element (31) and a first temperature sensing package (32), wherein the first temperature sensing package (32) is used to detect the heating temperature of the heating element (31).

10. The water production system according to any one of claims 1 to 4, characterized in that: The heat exchange module (20) further comprises a second temperature sensing package, which is used to detect the temperature of the stored water in the heat exchange module (20).

11. A water purification device, characterized in that: A water production system comprising any one of claims 1 to 10; The water production system comprises a circulation branch, a high-flow boiled water branch and a continuous boiled water branch. Along the water flow direction: the circulation branch is sequentially connected to the purified water outlet (101) of the water supply module (10), the cold water channel (22), the heating module (30), the hot water channel (21), and the circulation water inlet (102) of the water supply module (10); the high-flow boiled water branch is sequentially connected to the water supply module (10), the cold water channel (22), the heating module (30), and the water outlet module (40); the continuous boiled water branch is sequentially connected to the water supply module (10), the heating module (30), and the water outlet module (40); The water purification equipment has a circulation heating mode, a large-flow boiling water mode, and a continuous boiling water extraction mode. When the water purification equipment is in the circulation heating mode, the circulation branch is in a conductive state; when the water purification equipment is in the large-flow boiling water mode, the large-flow boiling water branch is in a conductive state; when the water purification equipment is in the continuous boiling water extraction mode, the continuous boiling water extraction branch is in a conductive state.

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