Water supply system and method of controlling the same

Abstract

This invention discloses a control method for a water supply system, which includes: a raw water supply pipeline; a softening device; a heating device, the inlet of which is connected to the outlet of the softening device; a hot water supply pipeline connected to the outlet of the heating device; a water purification device, the inlet of which is connected to the outlet of the softening device; and a diversion mechanism that diverts the softened water flowing out of the softening device to the heating device and / or the water purification device. The water purification device includes a water filtration unit, and the softened water flowing into the water purification device can flow into the water filtration unit. The control method includes: controlling the flow of raw water from the raw water supply pipeline into the softening device; acquiring at least the flow rate of the softened water flowing through the heating device; and controlling the operating status of the heating device and the water purification device based on the acquired flow rate. This invention can rationally distribute softened water to different water-using devices, taking into account the softened water usage needs of both the heating device and the water purification device, thereby improving the user experience.

Description

Technical Field

[0001] This invention relates to the field of water treatment technology, and in particular to a water supply system and its control method. Background Technology

[0002] Currently, with the improvement of living standards, people's requirements for daily water use are also increasing. Due to factors such as geography, water quality varies greatly across the country, and water resources differ significantly, with most areas having hard water. Prolonged use of hard water can cause dry, rough skin and accelerated aging, thus increasing the demand for soft water. As this demand grows, water softening devices are entering more and more homes.

[0003] Generally, water softening devices can provide users with cold soft water on their own. In some applications, softening devices can also be combined with heating devices to provide hot soft water, or they can supply soft water to other water-using devices. If a water purifier is continuously supplied with hard water for filtration, it will significantly shorten the lifespan of its water filtration unit. Therefore, connecting softened water to the water purifier can extend the lifespan of the water filtration unit.

[0004] When the softening device is connected to different water-using devices (for example, the softening device simultaneously supplies soft water to heating and water purification devices), the soft water needs to be allocated reasonably according to the performance characteristics of different water-using devices. Otherwise, various problems may occur, especially when the water supply flow is insufficient, which may cause conflicts between different water-using devices. Summary of the Invention

[0005] In view of the above problems, one object of the present invention is to provide a water supply system and control method thereof, which can supply soft water from a softening device to a water purification device to improve the lifespan of the water filtration unit, and rationally distribute soft water to different water-using devices, taking into account the soft water usage needs of both heating devices and water purification devices, thereby improving the user experience.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A water supply system includes: a raw water supply pipeline; a softening device, the inlet of which is connected to the raw water supply pipeline; a heating device, the inlet of which is connected to the outlet of the softening device; a hot water supply pipeline, the hot water supply pipeline being connected to the outlet of the heating device; a water purification device, the inlet of which is connected to the outlet of the softening device; and a diversion mechanism, which diverts the softened water flowing out of the softening device to the heating device and / or the water purification device; the water purification device includes a water filtration unit, and the softened water flowing into the water purification device can flow into the water filtration unit.

[0008] In a preferred embodiment, the diversion mechanism is located at the outlet of the softening device or in the connecting waterway between the outlet of the softening device and the inlet of the heating device.

[0009] In a preferred embodiment, the diversion mechanism has an inlet, a first outlet, and a second outlet. The inlet is connected to the outlet of the softening device or the inlet is connected to the outlet of the softening device through part of the connecting water passage. The first outlet and the second outlet are respectively connected to the inlet of the heating device and the inlet of the water purification device.

[0010] In a preferred embodiment, a flow regulating valve is provided between the second outlet and the water purification device or between the first outlet and the heating device.

[0011] In a preferred embodiment, the water supply system further includes an inlet diversion unit, which is used to divert the inlet water of the raw water supply pipeline to the inlet of the softening device and / or the inlet of the water purification device.

[0012] In a preferred embodiment, a bypass valve is connected between the inlet water diversion unit and the water purification device. When the bypass valve is in the open state, a portion of the raw water supplied by the raw water supply pipeline can flow to the water purification device.

[0013] In a preferred embodiment, the water purification device includes an inlet valve disposed on the inlet pipe of the water purification device.

[0014] In a preferred embodiment, the water supply system further includes a first flow detection unit, a second flow detection unit, and a controller electrically connected to the first flow detection unit and the second flow detection unit. The first flow detection unit and the second flow detection unit can detect any two of the following flow rates: the flow rate of the raw water supply pipeline, the flow rate through the heating device, and the flow rate to the water purification device. The controller can control the flow direction of the soft water flowing out of the softening device based on the detection results of the first flow detection unit and the second flow detection unit.

[0015] In a preferred embodiment, the water supply system further includes a booster pump installed on the raw water supply pipeline. When both the heating device and the water purification device are in operation, the booster pump is activated and put into operation.

[0016] In a preferred embodiment, the water filtration unit includes a membrane element, and the soft water flowing into the water filtration unit is filtered by the membrane element to produce clean water that flows out of the water filtration unit.

[0017] In a preferred embodiment, the membrane element includes a reverse osmosis membrane element.

[0018] In a preferred embodiment, the water purification device includes a heated tank for storing heated purified water.

[0019] In a preferred embodiment, the water supply system includes a housing, and the heating device, the softening device, and the diversion mechanism are integrated within the housing.

[0020] In a preferred embodiment, the housing is provided with a water inlet, a first water outlet, and a second water outlet; the water inlet is respectively connected to the water inlet of the softening device and the raw water supply pipeline; the first water outlet is respectively connected to the water outlet of the heating device and the hot water supply pipeline; the second water outlet is respectively connected to the water outlet of the softening device and the water purification device; the diversion mechanism is used to connect the water outlet of the softening device to the water inlet of the heating device and / or the second water outlet.

[0021] In a preferred embodiment, the diversion mechanism is located at the outlet of the softening device or in a connecting waterway between the outlet of the softening device and the inlet of the heating device, and the connecting waterway is located inside the housing.

[0022] In one preferred embodiment, the diversion mechanism has an inlet, a first outlet, and a second outlet. The inlet is connected to the outlet of the softening device, and the first and second outlets are respectively connected to the inlet of the heating device and the second outlet. Alternatively, the diversion mechanism has an inlet, a first outlet, and a second outlet. The inlet is connected to the outlet of the softening device through a portion of the connecting water passage, and the first and second outlets are respectively connected to the inlet of the heating device and the second outlet.

[0023] In a preferred embodiment, a flow regulating valve is provided between the second outlet and the second water outlet section or between the first outlet and the heating device.

[0024] In a preferred embodiment, the water supply system further includes an inlet diversion unit for diverting the water inlet from the inlet section to the inlet of the softening device and / or the second outlet section.

[0025] In a preferred embodiment, a bypass valve is connected between the inlet water diversion unit and the second outlet water section. When the bypass valve is in the open state, part of the water provided by the inlet water diversion unit can flow to the second outlet water section.

[0026] In a preferred embodiment, the flow distribution mechanism includes a flow distribution valve.

[0027] In a preferred embodiment, the heating device is a gas heating device, which includes a heat exchanger and a burner that provides heat energy to the heat exchanger.

[0028] In a preferred embodiment, the water purification device is directly and / or indirectly connected to the heating device.

[0029] A control method for a water supply system as described above includes:

[0030] The raw water flowing into the raw water supply pipeline is controlled to flow into the softening device;

[0031] At least the flow rate of soft water passing through the heating device shall be obtained;

[0032] The operating status of the heating device and the water purification device is controlled based on the obtained flow rate.

[0033] In a preferred embodiment, the control method of the water supply system further includes acquiring at least one of the flow rate of the raw water supply pipeline and the flow rate of the soft water flowing through the water purification device.

[0034] In a preferred embodiment, when the flow rate through the heating device is greater than or equal to the start-up flow rate of the heating device and the flow rate of the raw water is less than the preset total flow rate, if the water purification device receives the start-up water production information, it controls one of the heating device and the water purification device to be in operation.

[0035] In a preferred embodiment, when the flow rate through the heating device is greater than or equal to the starting flow rate of the heating device and the flow rate of the raw water is less than the preset total flow rate, if the water purification device receives the start-up water production information, it maintains the heating device in operation and controls the soft water flowing out of the softening device to flow only into the heating device.

[0036] In a preferred embodiment, when the flow rate through the heating device is greater than or equal to the starting flow rate of the heating device and the flow rate of the raw water is less than the preset total flow rate, if the water purification device receives the start-up water production information, it maintains the heating device in operation, controls the soft water flowing out of the softening device to flow only into the heating device, controls a portion of the raw water in the raw water supply pipeline to flow into the water purification device, and starts the water purification device to produce water.

[0037] In a preferred embodiment, when the flow rate through the heating device is greater than or equal to the start-up flow rate of the heating device and the flow rate of the raw water is greater than or equal to the preset total flow rate, if the water purification device receives the start-up water production information, it controls the soft water flowing out of the softening device to flow into the heating device and the water purification device; it controls the combustion load of the heating device so that the water temperature flowing out of the heating device reaches the preset temperature range, and controls the water purification device to be in operation.

[0038] In a preferred embodiment, when the flow rate to the water purification device is greater than or equal to the start-up flow rate of the water purification device, the heating device receives the start-up information. If the flow rate through the heating device is greater than 0 and less than the start-up flow rate of the heating device, and the flow rate to the water purification device is greater than or equal to a first preset flow rate, the soft water flowing out of the softening device is maintained to flow into the heating device and the water purification device.

[0039] In a preferred embodiment, when the flow rate to the water purification device is greater than or equal to the start-up flow rate of the water purification device, the heating device receives the start-up information. If the flow rate through the heating device is greater than 0 and less than the start-up flow rate of the heating device, and the flow rate to the water purification device is less than a first preset flow rate, the soft water flowing out of the softening device is controlled to flow only into the heating device.

[0040] In a preferred embodiment, when the flow rate to the water purification device is greater than or equal to the start-up flow rate of the water purification device, the heating device receives the start-up information. If the flow rate through the heating device is greater than or equal to the start-up flow rate of the heating device, the soft water flowing out of the softening device is maintained to flow into the heating device and the water purification device.

[0041] In a preferred embodiment, the water supply system further includes a controller located on the heating device side and a communication module located on the water purification device side. The communication module can interact with the controller and can at least send the start-up information of the water purification device to the controller.

[0042] In a preferred embodiment, if the water purification device receives a water production start-up message and the flow rate through the heating device is greater than or equal to a second preset flow rate, the soft water flowing out of the softening device is controlled to flow to the heating device and the water purification device.

[0043] In a preferred embodiment, if the water purification device receives a water production start-up message and the flow rate through the heating device is less than a second preset flow rate, the soft water flowing out of the softening device is controlled to flow only to the heating device.

[0044] In a preferred embodiment, if the flow rate of the heating device is greater than 0, the soft water flowing out of the softening device is controlled to flow only to the heating device.

[0045] Beneficial effects:

[0046] The water supply system provided in this application includes a softening device, a heating device, and a water purification device. The softening device, through a diversion mechanism, distributes the softened water flowing out of the softening device to the heating device and / or the water purification device. Because the softening and purification devices work together, sodium ions from the softening device are filtered out by the purification device, ensuring drinking water safety. Simultaneously, since the softening device removes calcium and magnesium ions from the water using ion exchange resin, the number of impurity ions entering the softening device is significantly reduced, effectively extending the lifespan of the water purification device's filter cartridge and thus lowering user operating costs. Furthermore, this application also addresses the potential water usage conflict between the heating and purification devices during operation, rationally distributing the softened water from the softening device to different water-using devices, accommodating the softened water needs of both the heating and purification devices, thereby improving the overall user experience.

[0047] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the invention can be employed. It should be understood that the embodiments of the present invention are not limited in scope as a result.

[0048] Features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0049] It should be emphasized that the term "including / comprises" as used herein refers to the presence of a feature, whole, step, or component, but does not exclude the presence or addition of one or more other features, wholes, steps, or components. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0051] Figure 1 This is a schematic diagram of the structure of the first water supply system provided in the embodiments of this application;

[0052] Figure 2This is a schematic diagram of the structure of the second water supply system provided in the embodiments of this application;

[0053] Figure 3 This is a schematic diagram of the structure of the water supply device in the second type of water supply system of this application;

[0054] Figure 4 This is a schematic diagram of the third water supply system provided in the embodiments of this application;

[0055] Figure 5 This is a schematic diagram of the structure of the fourth water supply system provided in the embodiments of this application;

[0056] Figure 6 This is a schematic diagram of the fifth water supply system provided in the embodiments of this application;

[0057] Figure 7 This is a schematic diagram of the sixth water supply system provided in the embodiments of this application;

[0058] Figure 8 This is a schematic diagram of the structure of the seventh water supply system provided in the embodiments of this application;

[0059] Figure 9 This is a schematic diagram of the eighth water supply system provided in the embodiments of this application;

[0060] Figure 10 This is a schematic diagram of the ninth water supply system provided in the embodiments of this application;

[0061] Figure 11 This is a schematic diagram of the tenth water supply system provided in the embodiments of this application;

[0062] Figure 12 This is a flowchart of the control method steps for a water supply system provided by the present invention.

[0063] Explanation of reference numerals in the attached figures:

[0064] 100. Water supply equipment;

[0065] 110. Shell;

[0066] 1. Water inlet section;

[0067] 10. Raw water supply pipeline;

[0068] 2. Softening device;

[0069] 3. Heating device;

[0070] 4. First water outlet section;

[0071] 40. Hot water supply piping;

[0072] 5. Second water outlet;

[0073] 6. Diversion mechanism; 60. Import; 61. First export; 62. Second export;

[0074] 7. Flow regulating valve;

[0075] 80. Branch piping;

[0076] 81. Inlet / outlet diversion unit;

[0077] 82. Bypass valve;

[0078] 91. First flow detection unit;

[0079] 92. Second flow detection unit;

[0080] 93. Booster pump;

[0081] 200. Water purification device;

[0082] 210. Water filtration unit;

[0083] 220. Inlet valve;

[0084] 230. Hot pot;

[0085] 240. Water inlet pipe. Detailed Implementation

[0086] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0087] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be another element intervening in it. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be another element intervening in it. When an element is considered to be "connected" to another element, it mainly means that fluid can flow from the interior of the first element to the interior of the second element; the two elements can be directly connected through a physical structure or there may be an intermediate transition element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0088] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0089] Currently, with increasing public concern about drinking water quality, water purifiers have become common in many households. Among the components, the lifespan of the filter cartridge is a core factor determining the operating cost of a water purifier. For example, in water purifiers equipped with RO (Reverse Osmosis) membrane cartridges, the RO membrane cartridge is the most expensive component. Typically, the lifespan of an RO membrane cartridge is designed to be 3 years. However, in actual use, the lifespan of this cartridge is affected by factors such as water quality. If the water contains a high concentration of impurities and ions, it will directly shorten the lifespan of the filter cartridge.

[0090] In the embodiments provided by this invention, a water supply system simultaneously equipped with a softening device, a heating device, and a water purification device is provided. The softening device can supply soft water to both the heating and purification devices. Because the softening and purification devices can be used in combination within this water supply system—that is, water softened by the softening device can be supplied to the purification device—sodium ions from the softening device are filtered out by the purification device during this process, without affecting drinking water safety. Furthermore, since the softening device removes calcium and magnesium ions from the water through ion exchange resin, the number of impurity ions entering the softening device is greatly reduced, effectively extending the lifespan of the RO membrane filter and thus lowering user operating costs.

[0091] The inventors discovered that during the use of this water supply system, there may be certain water usage conflicts between the heating device and the water purification device. For example, in one scenario, when the heating device is supplying hot water, if the water purification device starts to produce water, since the supply of soft water is fixed, the water purification device will divert water from the heating device, potentially causing large fluctuations in the outlet water temperature or even flameout, thus affecting the user experience. In another scenario, if the water purification device is producing water and the heating device is activated, the fixed supply of soft water will also divert water from the water purification device, potentially causing it to malfunction. Furthermore, in an extreme case, if the heating device and the water purification device are activated simultaneously, due to the limited supply of soft water, only one of them may operate normally, or neither may operate properly.

[0092] like Figures 1 to 2 , Figures 4 to 11As shown, to resolve the conflict between the softened water usage of the heating device 3 and the water purification device 200, this embodiment of the invention provides a water supply system, which may include: a raw water supply pipeline 10; a softening device 2, the inlet of which is connected to the raw water supply pipeline 10; a heating device 3, the inlet of which is connected to the outlet of the softening device 2; a hot water supply pipeline 40, which is connected to the outlet of the heating device 3; a water purification device 200, the inlet of which is connected to the outlet of the softening device 2; and a diversion mechanism 6, which diverts the softened water flowing out of the softening device 2 to the heating device 3 and / or the water purification device 200; the water purification device 200 includes a water filtration unit 210, and the softened water flowing into the water purification device 200 can flow into the water filtration unit 210.

[0093] In this embodiment, the core components of the water supply system mainly include: a softening device 2, a heating device 3, a water purification device 200, and a diversion mechanism 6, etc. Figure 2 , Figure 5 , Figure 7 , Figure 9 and Figure 11 As shown, the heating device 3, the softening device 2, and the diversion mechanism 6 can be integrated for easy one-piece installation, saving installation space. Of course, the heating device 3, softening device 2, and diversion mechanism 6 are not limited to an integrated arrangement; they can also be installed separately, such as... Figure 1 , Figure 4 , Figure 6 , Figure 8 , Figure 10 As shown.

[0094] In the description of this application, the heating device 3, the softening device 2 and the diversion mechanism 6 are mainly integrated as an example.

[0095] Please refer to the following: Figure 2 and Figure 3 As shown, when the heating device 3, the softening device 2, and the diversion mechanism 6 are integrated, they can be integrated into a water supply device 100. That is, the water supply system includes the water supply device 100, and the heating device 3, the softening device 2, and the diversion mechanism 6 are integrated into the housing 110 of the water supply device 100.

[0096] The water supply device 100 integrates a softening device 2, a heating device 3, and a diversion mechanism 6, providing both heated and softened hot soft water and softened cold soft water. In this application's specification, the heating device 3 is primarily illustrated using a gas-fired heating device as an example. However, those skilled in the art will recognize that the heating device 3 is not limited to a gas-fired heating device and can employ other forms of instantaneous water heating, which will not be elaborated upon here. Specifically, the gas-fired heating device can be a heating device 3 in equipment such as a wall-hung boiler or a gas water heater, and the softening device 2 is integrated into the wall-hung boiler, gas water heater, etc.

[0097] Please see Figure 3 The water supply device 100 may specifically include: a water softening device 2 for softening water; a heating device 3 that can be connected to the outlet of the water softening device 2; a water inlet 1 that can be connected to the inlet of the water softening device 2; a first water outlet 4 that can be connected to the outlet of the heating device 3 and the hot water supply pipeline 40; a second water outlet 5 that can be connected to the outlet of the water softening device 2 and the water purification device 200; and a diversion mechanism 6 that connects the outlet of the water softening device 2 to the inlet of the heating device 3 and / or the second water outlet 5.

[0098] The water supply device 100 includes a housing 110, which integrates the softening device 2 and the heating device 3 into the same cavity. The water inlet 1, the first water outlet 4, and the second water outlet 5 are disposed on the housing 110. Of course, in addition to installing the softening device 2 and the heating device 3, the housing 110 also houses a diversion mechanism 6 and necessary connecting pipes and other components.

[0099] The heating device 3 is primarily used to heat the cold water flowing through it. Specifically, the form of the cold water that enters the heating device 3 for heating can vary depending on the connections and links of the internal pipes of the water supply device 100 and the user's water usage needs. In this embodiment, the heating device 3 is connected to the outlet of the softening device 2, and the cold water can be softened water that flows out of the outlet of the softening device 2.

[0100] Specifically, the heating device 3 may include a heat exchanger and a burner that provides heat energy to the heat exchanger. The heat exchanger may specifically be a heat exchange tube type heat exchanger, but it is not limited to this type; it may also be an electrically heated heat exchanger, etc. In the embodiments described in this specification, a heat exchange tube type heat exchanger is used as an example. Other types of heat exchangers can be described with reference to this example, and will not be elaborated further here. When the heating device 3 is working, it uses the high-temperature flue gas generated by the burner combustion to exchange heat with the heat exchange tubes of the heat exchanger, thereby heating the water inside the heat exchanger.

[0101] The outlet of the heating device 3 can be connected to a first water outlet 4. The first water outlet 4 can communicate with the outlet of the heating device 3, meaning that water flowing from the outlet of the heating device 3 can flow to the first water outlet 4 and then be supplied to the user through the hot water supply pipeline 40. Specifically, the first water outlet 4 can be in the form of a connector installed on the housing 110 for connecting to the external hot water supply pipeline 40 to provide hot soft water to the user. When the first water outlet 4 is in the form of a connector, it can be directly connected to the outlet of the heating device 3, or it can be connected through an intermediate pipeline, or it can be connected through an integrated water circuit module. Of course, other forms of the first water outlet 4 are not excluded, such as a connecting pipeline with a connector, etc., and this application does not make specific limitations here.

[0102] The softening device 2 is mainly used to soften the cold water flowing through it. This cold water can be ambient temperature tap water flowing in from the inlet 1. Specifically, the softening device 2 includes a resin tank storing softening resin. Furthermore, the softening device 2 may also include a salt tank structure storing softening salt, and a first solenoid valve and a second solenoid valve located upstream of the resin tank. During normal use of softened water, the second solenoid valve is open and the first solenoid valve is closed. During resin regeneration, the resin tank has no softening capacity, and the regeneration process conflicts with the use of softened water. If the user has a water demand and no longer needs to use the resin tank, the first solenoid valve opens and the second solenoid valve closes. The outlet of the softening device 2 is connected to a second outlet 5, which can communicate with the outlet of the softening device 2, meaning that the softened water flowing from the outlet of the softening device 2 can flow to the second outlet 5. Specifically, the second water outlet 5 can be in the form of a connector mounted on the housing 110, for connecting to other water-using devices that require soft water, to provide soft water to the user. For example, while the second water outlet 5 is connected to the outlet of the softening device 2, it can also be connected to the water purification device 200, thereby supplying the soft water flowing from the softening device 2 to the water purification device 200. When the second water outlet 5 is in the form of a connector, it can be directly connected to the outlet of the softening device 2, or it can be connected via an intermediate pipe, or it can be connected via an integrated water circuit module. Of course, other forms of the second water outlet 5 are not excluded, such as a connecting pipe with a connector, etc., and this application does not make specific limitations here.

[0103] The softening device 2 has an inlet connected to an inlet section 1, which connects to both the softening device 2's inlet and the raw water supply pipeline 10. Tap water flows through the raw water supply pipeline 10 and the inlet section 1 to the softening device 2's inlet. Specifically, the inlet section 1 can be a connector mounted on the housing 110 to supply tap water to the softening device 2. When the inlet section 1 is a connector, it can be directly connected to the softening device 2's inlet, connected via an intermediate pipeline, or connected through an integrated water circuit module. Other forms of the inlet section 1 are also possible, such as a connecting pipeline with a connector; this application does not impose specific limitations on these forms.

[0104] The water supply device 100 is equipped with a diversion mechanism 6, which diverts the softened water flowing out of the softening device to at least one of the heating device 3 and the water purification device 200. Specifically, the diversion mechanism 6 connects the outlet of the softening device 2 with the inlet of the heating device 3 and the second outlet 5. After the water is softened by the softening device 2, it flows out of the outlet and then through the diversion mechanism 6, where it can flow to the inlet of the heating device 3 and the second outlet 5.

[0105] The diversion mechanism 6 can be located at the outlet of the softening device 2 or connected to the water passage between the outlet of the softening device 2 and the inlet of the heating device 3. The water passage is located inside the housing 110 of the water supply device 100.

[0106] In the embodiments described in this specification, the diversion mechanism 6 may include a three-way structure; furthermore, the diversion mechanism 6 may also incorporate flow regulation / distribution functions on top of the three-way structure. For example, the diversion mechanism 6 may be a flow distribution valve with three openings; or, it may be a three-way structure plus a flow regulation valve 7 disposed between the second outlet 62 and the second water outlet 5 or between the first outlet 61 and the heating device 3 (when the second water outlet 5 is connected to the inlet 60 of the water purification device 200 via a pipeline, between the second outlet 62 and the water purification device 200 and / or between the first outlet 61 and the heating device 3). Optionally, the flow regulation valve 7 may be a valve with a switching function, a valve with multi-level adjustment function, or a valve with stepless adjustment and on / off function.

[0107] When the diversion mechanism 6 is at least a three-way structure, specifically, the diversion mechanism 6 has an inlet 60, a first outlet 61, and a second outlet 62. The inlet 60 is connected to the outlet of the softening device 2, and the first outlet 61 and the second outlet 62 are respectively connected to the inlet of the heating device 3 and the second outlet section 5. For a water supply system equipped with a water purification device 200, the inlet 60 is connected to the outlet of the softening device 2, and the first outlet 61 and the second outlet 62 are respectively connected to the inlet of the heating device 3 and the inlet of the water purification device 200.

[0108] Or, such as Figure 3As shown, the diversion mechanism 6 has an inlet 60, a first outlet 61, and a second outlet 62. The inlet 60 is connected to the outlet of the softening device 2 via a portion of the connecting water passage. The first outlet 61 and the second outlet 62 are respectively connected to the inlet of the heating device 3 and the second outlet section 5. For a water supply system equipped with a water purification device 200, the inlet 60 is connected to the outlet of the softening device 2 via a portion of the connecting water passage, and the first outlet 61 and the second outlet 62 are respectively connected to the inlet of the heating device 3 and the inlet of the water purification device 200.

[0109] When the diversion mechanism 6 includes a flow distribution valve with three openings, specifically, the flow distribution valve can be a PSG valve or other valves with flow regulation function, which can regulate the flow rate of soft water entering from the inlet 60 to the first outlet 61 and the second outlet 62 by adjusting the opening degree of the connection between the inlet 60 and the first outlet 61 and the second outlet 62.

[0110] When the diversion mechanism 6 includes a combination of a three-way structure and a flow regulating valve 7, the number of flow regulating valves 7 can be one, two, or even more. Please refer to [link / reference]. Figure 4 or Figure 5 For example, the number of flow regulating valves 7 can be one, which can be located between the second outlet 62 and the second water outlet 5. For a water supply system equipped with a water purification device 200, the flow regulating valve 7 can be located between the second outlet 62 and the water purification device 200. When the flow regulating valve 7 is in the open state, soft water can flow from the diversion mechanism 6 to the second water outlet 5, and then be directed to the water purification device 200. Of course, the specific form of the flow regulating valve 7 can be a switch valve, or it can be a regulating valve with adjustable opening, that is, a regulating valve that can achieve multi-stage or stepless flow regulation. Specifically, this application does not impose any form limitation here.

[0111] Furthermore, the flow regulating valve 7 can also be installed between the first outlet 61 and the heating device 3. When the flow regulating valve 7 is in the open state, soft water can flow from the diversion mechanism 6 to the heating device 3. In addition, there can be multiple flow regulating valves 7. Flow regulating valves 7 can be installed between the second outlet 62 and the second water outlet 5, and between the first outlet 61 and the heating device 3, thereby realizing flow control of two independent branches.

[0112] The water purification device 200 includes a water filtration unit 210, through which soft water flowing into the water purification device 200 can flow into the water filtration unit 210. Specifically, the water filtration unit 210 includes a membrane element, through which the soft water flowing into the water filtration unit 210 is filtered and the resulting purified water flows out of the water filtration unit 210.

[0113] The membrane element may include a reverse osmosis membrane element. However, the form of the membrane element is not limited to the examples above; it may also be other forms or combinations thereof. For example, the membrane element may also include any one or a combination of microfiltration membranes, nanofiltration membranes, etc. When the membrane element includes a reverse osmosis membrane element, because the pore size of the reverse osmosis membrane is very small (the diameter of the surface micropores is generally between 0.5 and 10 nm), it can effectively remove dissolved salts, colloids, microorganisms, organic matter, etc. from the water.

[0114] In one embodiment, the water purification device 200 further includes a heating tank 230 for storing heated purified water. When the water purification device 200 is equipped with the heating tank 230, it is equivalent to pre-storing a certain amount of purified water at a set temperature for the user. Regardless of whether the water purification device 200 is in water production mode, as long as there is water stored in the heating tank 230, it can be directly provided to the user, thereby meeting the user's need for hot water at any time.

[0115] For the water supply device 100, the inlet section 1 for inputting cold water is the main water inlet of the water supply device 100 and is connected to the raw water supply pipeline 10. If, in the water supply device 100, the heating device 3 is heating soft water and the water purification device 200 is activated to produce water, with the total inlet flow rate remaining constant, the diversion effect of the water purification device 200 will cause fluctuations in the water flow rate entering the heating device 3, resulting in significant fluctuations in the temperature of the hot water output from the first outlet section 4. If, in the water supply device 100, the water purification device 200 is producing water and the heating device 3 is activated to heat soft water, with the total inlet flow rate remaining constant, the diversion effect of the heating device 3 may also affect the normal water production of the water purification device 200.

[0116] To resolve the conflict between the heating device 3 and the water purification device 200 in terms of soft water usage, at least one of the connecting pipes between the first outlet 61 and the heating device 3 and the second outlet 62 and the water purification device 200 of the diversion mechanism 6 can be controlled on or off, or the flow can be allocated, based on the total inlet flow rate and the flow rate information that can be diverted to the heating device 3 and the water purification device 200, thereby resolving the conflict between the two in terms of soft water usage.

[0117] In one embodiment, the water supply system may further include a first flow detection unit 91, a second flow detection unit 92, and a controller (not shown in the figures) electrically connected to the first flow detection unit 91 and the second flow detection unit 92. The first flow detection unit 91 and the second flow detection unit 92 can detect any two of the following flow rates: the flow rate of the raw water supply pipeline 10, the flow rate through the heating device 3, and the flow rate to the water purification device 200. The controller can control the flow direction of the soft water flowing out of the softening device 2 based on the detection results of the first flow detection unit 91 and the second flow detection unit 92.

[0118] When the softening device 2, heating device 3, and diversion mechanism 6 in the water supply system are integrated into the same housing 110 to form a water supply device 100, the controller, the first flow detection unit 91, and the second flow detection unit 92 can be located within the water supply device 100. Correspondingly, the water supply device 100 also includes the first flow detection unit 91, the second flow detection unit 92, and a controller electrically connected to the first flow detection unit 91 and the second flow detection unit 92. The first flow detection unit 91 and the second flow detection unit 92 can detect any two of the following flow rates: the flow rate of the raw water supply pipeline 10, the flow rate through the heating device 3, and the flow rate towards the water purification device 200. The controller can control the flow direction of the softened water exiting the softening device 2 based on the detection results of the first flow detection unit 91 and the second flow detection unit 92.

[0119] Specifically, the first flow detection unit 91 can be located near the water inlet 1 to detect the flow rate of the raw water supply pipeline 10; the second flow detection unit 92 can be located in the pipeline between the first outlet 61 and the inlet of the heating device 3, or in the water supply pipeline from the outlet of the heating device 3 to the outlet supplying hot water, to detect the flow rate through the heating device 3; the controller is electrically connected to the first flow detection unit 91 and the second flow detection unit 92 respectively, and is used to control the flow direction of the soft water flowing out of the softening device 2 based on the detection results of the first flow detection unit 91 and the second flow detection unit 92. It should be noted that the "flow direction" here refers to the direction of liquid flow when there is liquid flow in the pipeline. For example, if there is liquid in a section of the pipeline but the liquid does not flow (for example, there is a valve in the pipeline in a closed state or the pipeline is connected to a valve in a closed state), the flow rate in the pipeline is 0, the liquid in the pipeline does not flow, and therefore there is no flow direction.

[0120] In this embodiment, the controller can obtain the total inlet water flow and the first water flow diverted to the heating device 3 according to the first flow detection unit 91 and the second flow detection unit 92 respectively; further, based on the inlet water flow and the first water flow, the second water flow diverted to the second water outlet 5 can be determined, thereby controlling the soft water flow direction of the softening device 2 based on the diversion situation and the water demand of the heating device 3 and the water purification device 200.

[0121] It should be noted that the specific number and location of the flow detection units in the embodiments described in this application are merely typical examples, and those skilled in the art can make adaptive adjustments based on actual pipeline conditions, etc. For example, when there are two flow detection units, flow detection units can be respectively set at the inlet 1 and the second outlet 5 to obtain the total inlet flow rate and the second water flow rate diverted to the second outlet 5, and the first water flow rate diverted to the heating device 3 can be determined based on the inlet flow rate and the second water flow rate; or, flow detection units can be set separately to detect the water flow rate through the heating device 3 and to obtain the water flow rate at the second outlet 5, etc. In principle, the total inlet flow rate, the first water flow rate diverted to the heating device 3, and the second water flow rate diverted to the second outlet 5 can be determined by flow detection at any two locations. Other situations will not be elaborated here. When there are three flow detection units, flow detection units can be set at all three locations to directly obtain the inlet water flow, the first water flow diverted to the heating device 3, and the second water flow diverted to the second outlet 5.

[0122] In some cases, when the softening device 2 can only provide a limited flow of soft water (for example, it cannot simultaneously ensure that the heating device 3 and the water purification device 200 are in operation), in order to ensure that the heating device 3 is in operation while heating the soft water, i.e., while heating the soft water, the water purification device 200 can produce water normally, a branch pipe 80 (e.g.) can be installed. Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, a portion of the raw water in the original supply pipeline is supplied to the water purification device 200, thereby ensuring the flow rate of soft water flowing into the heating device 3.

[0123] In one embodiment, the water supply system may further include an inlet diversion unit 81, which is used to divert the inlet water of the raw water supply pipeline 10 to the inlet of the softening device 2 and / or the inlet of the water purification device 200.

[0124] In an embodiment where a water supply device 100 is provided, the inlet water diversion unit 81 can be integrated into the housing 110 of the water supply device 100. Specifically, the water supply device 100 further includes an inlet water diversion unit 81, which is used to divert the water inlet of the water inlet 1 to the water inlet of the softening device 2 and / or the second water outlet 5.

[0125] Specifically, the inlet water diversion unit 81 can be in the form of a three-way valve, having one inlet and two outlets. The inlet connects to the raw water supply pipeline 10, and the outlets can be connected to the inlet of the softening device 2 and the inlet of the water purification device 200, respectively. Of course, the inlet water diversion unit 81 can also be a cavity structure formed inside the water circuit integration module, including at least three interfaces. Furthermore, the form of the inlet water diversion unit 81 can also be other forms, which are not specifically limited herein.

[0126] Furthermore, a bypass valve 82 can be connected between the inlet water diversion unit 81 and the second outlet water section 5. When the bypass valve 82 is in the open state, part of the water provided by the inlet water diversion unit 81 can flow to the second outlet water section 5.

[0127] Please see Figure 8 and Figure 9 Specifically, the bypass valve 82 can be installed in the branch pipe 80 between the inlet water diversion unit 81 and the second outlet water pipe. For a water supply system equipped with a water purification device 200, a bypass valve 82 is connected between the inlet water diversion unit 81 and the water purification device 200. When the bypass valve 82 is in the open state, part of the raw water supplied by the raw water supply pipe 10 can flow to the water purification device 200.

[0128] When the bypass valve 82 is installed on the branch pipe 80, it cooperates with the flow regulating valve 7 installed between the second outlet 62 and the water purification device 200 to ensure that a portion of the raw water flows only to the water purification device 200. When the flow regulating valve 7 is in the closed state and the bypass valve 82 is in the open state, only the raw water flowing into the branch pipe 80 from the inlet diversion unit 81 can flow to the water purification device 200, and no softened water flows into the water purification device 200; when the flow regulating valve 7 is in the open state and the bypass valve 82 is in the closed state, only softened water flows into the water purification device 200 and no raw water flows into the water purification device 200. Similarly, when the softening device and the heating device are integrated in the same housing, the branch pipe 80 and the inlet diversion unit 81 can also be located outside the housing. The branch pipe 80 is connected to the water purification device 200, and the bypass valve 82 on the branch pipe 80 cooperates with the flow regulating valve 7 between the diversion mechanism 6 and the second outlet 5.

[0129] Please see Figure 10 and Figure 11 When the flow regulating valve 7 is located between the second outlet 62 and the water purification device 200, and this scheme is combined with the branch pipe 80 and the inlet water diversion unit 81, the flow regulating valve 7 can be located at the connection position between the branch pipe 80 and the second outlet pipe (i.e., located between the second outlet 62 and the water purification device 200).

[0130] Specifically, the flow regulating valve 7 can be in the form of a flow regulating valve with three openings. When it is necessary to ensure that a portion of the raw water flows only to the water purification device 200, it can open one of the openings opposite to the branch pipe 80 to conduct the branch pipe 80, and close the other opening opposite to the heating device 3 to prevent the raw water from entering the heating device 3.

[0131] Of course, in some embodiments, in the embodiment with branch pipe 80, a flow regulating valve or switching valve may be additionally provided between the second outlet 62 and the heating device 3. When the bypass valve 82 is opened, the flow regulating valve or switching valve is closed, thereby preventing raw water from entering the heating device 3, that is, ensuring that the raw water only enters the water purification device 200.

[0132] In one embodiment, the water purification device 200 may further include an inlet valve 220 disposed on the inlet pipe 240 of the water purification device 200.

[0133] The inlet valve 220 can at least control the opening and closing of the inlet pipe 240. When the inlet valve 220 is open, the soft water provided by the softening device 2 or the raw water provided by the raw water supply pipe 10 can be supplied to the water purification device 200 through the inlet pipe 240.

[0134] It should be noted that, although... Figures 4-5 and Figures 8-9 The water purification device 200 shown includes an inlet valve 220. Since a flow regulating valve 7 is provided between the diversion mechanism 6 and the water purification device 200, the water purification device 200 may not have an inlet valve 220. Water can be supplied to or stopped from the water purification device 200 through the flow regulating valve 7.

[0135] like Figures 6-11 As shown, in one embodiment, the water supply system may further include a booster pump 93 installed on the raw water supply pipeline 10. When both the heating device 3 and the water purification device 200 are in operation, the booster pump 93 is activated and put into operation. In the case where a branch pipeline 80 and an inlet water diversion unit 81 are provided, the booster pump 93 may be located on the raw water supply pipeline 10 downstream of the inlet water diversion unit 81.

[0136] In this embodiment, a booster pump 93 can also be installed on the raw water supply pipeline 10. After the booster pump 93 is started, the water pressure and flow rate of the raw water entering the softening device 2 can be increased, thereby ensuring that the system has sufficient flow to supply the heating device 3 and the water purification device 200 in operation. This can play a role in flow compensation and reduce the water temperature fluctuation of the hot water generated by the heating device 3.

[0137] For example, when the heating device 3 is in the working state of heating soft water, and the water purification device 200 is started to produce water, if the flow rate of soft water provided by the softening device 2 remains constant, the flow rate into the heating device 3 will decrease because the water purification device 200 diverts the soft water. At this time, under constant load, the outlet water temperature of the heating device 3 will fluctuate. In this embodiment, by setting the booster pump 93, the flow rate of soft water from the softening device 2 can be increased, compensating for the diversion of water from the water purification device 200 to the heating device 3, ensuring a stable flow rate of soft water supplied to the heating device 3, and simultaneously keeping the outlet water temperature of the heating device 3 within a small temperature difference range.

[0138] It should be noted that the water supply system may also include a water pressure detection unit, which can be installed in the raw water supply pipeline 10 and located downstream of the booster pump 93 along the water flow direction. This water pressure detection unit is used to detect the water pressure of the raw water after being pressurized by the booster pump 93. This water pressure detection unit can be equivalent to the flow rate detection unit installed at the water inlet 1. When the water pressure of the water pressure detection unit reaches the set pressure, the corresponding flow rate supplied to the softening device 2 can also meet the needs of the heating device 3 (heating soft water) and the water purification device 200 (preparing purified water) operating simultaneously. Of course, the method of obtaining the flow rate in this system is not limited to the above example. Those skilled in the art, inspired by the content disclosed in this application, can also use other existing methods to obtain the flow rate.

[0139] Based on the water supply system provided in the above embodiments, this application also provides a control method for the water supply system. In this specification, the specific composition, connection relationship and function of each part of the water supply system can be referred to the specific description of the water supply system above, and will not be elaborated here.

[0140] Please refer to the following: Figure 12 , Figure 12This is a flowchart illustrating the steps of a control method for a water supply system according to one embodiment of this application. While this application provides method operation steps as shown in the following embodiments or accompanying drawings, more or fewer operation steps may be included in the method based on conventional or non-inventive methods. For steps where there is no logically necessary causal relationship, the execution order of these steps is not limited to the execution order provided in the embodiments of this application. When the method is executed in a real device or end product, it can be executed sequentially or in parallel according to the methods shown in the embodiments or accompanying drawings.

[0141] The control method for the water supply system may include the following steps:

[0142] Step S11: Control the flow of raw water from the raw water supply pipeline into the softening device;

[0143] Step S12: Obtain at least the flow rate of soft water flowing through the heating device;

[0144] Step S13: Control the operating status of the heating device and the water purification device according to the obtained flow rate.

[0145] In this embodiment, as described in the above-described water supply system implementation, the water supply system includes: a raw water supply pipeline, a softening device, a heating device, a water purification device, and a diversion mechanism. The specific composition of the water supply system, the connections between its various parts, and the functions it can achieve can be found in the detailed description of the above-described water supply system implementation, and will not be repeated here.

[0146] In this embodiment, raw water flowing from the soft water supply pipeline can flow into the softening device. Specifically, a control device, such as at least one switch valve, can be installed on the raw water supply pipeline. When the switch valve is opened, water in the raw water supply pipeline can flow into the softening device.

[0147] The water softened by the softening device can flow to at least one of the heating device and the water purification device, depending on usage requirements and flow rate. For example, a diversion mechanism can be installed in the channel connecting the softening device, the heating device, and the water purification device to control the diversion of the softened water flowing out of the softening device.

[0148] Furthermore, in some embodiments, the control method of the water supply system further includes acquiring at least one flow rate among the flow rates of the raw water supply pipeline and the soft water flow rate of the water purification device.

[0149] In other words, when acquiring the flow rate, at least two of the following can be acquired: the flow rate of the raw water flowing through the raw water supply pipeline, the flow rate flowing through the heating device, and the flow rate flowing to the water purification device. The specific method for acquiring the flow rate can be referred to the detailed description of the water supply system above, and will not be repeated here.

[0150] By obtaining two of the following flow rates—the flow rate of raw water flowing through the raw water supply pipeline, the flow rate of water flowing through the heating device, and the flow rate of water flowing to the water purification device—the magnitude of the third flow rate can be calculated. In other words, obtaining two of the three flow rates—the flow rate of raw water flowing through the raw water supply pipeline, the flow rate of water flowing through the heating device, and the flow rate of water flowing to the water purification device—is equivalent to obtaining all the flow rates in those three categories.

[0151] Based on the above flow rate information, the supply (raw water flow rate) and demand (flow rate through the heating and purification devices) can be reflected. The operating status of the heating and purification devices can then be controlled according to the obtained flow rate, thereby resolving potential water usage conflicts between the heating and purification devices during the use of the water supply system. The softened water from the softening device is rationally distributed to different water-using devices, taking into account the usage needs of both the heating and purification devices in the water supply system, thus improving the overall user experience.

[0152] The operating states of the heating device mainly include: a state where the flow rate through the heating device is greater than or equal to the starting flow rate of the heating device, heating soft water to output hot soft water to the user; and a state where the flow rate through the heating device is less than the starting flow rate of the heating device, thus outputting a smaller flow rate of cold soft water to the user, etc. The operating states of the water purification device mainly include: a state where the flow rate of soft water to the water purification device is greater than or equal to the starting flow rate of the water purification device, allowing the water purification device to produce water normally based on soft water; and a state where the flow rate of hard water to the water purification device is greater than or equal to the starting flow rate of the water purification device, allowing the water purification device to produce water normally based on hard water, etc. It should be noted that the above descriptions of the operating states of the heating device and the water purification device are merely illustrative, and this application is not limited to the above descriptions and may include any other reasonable operating states. In addition, it should be noted that when no water flows into the water purification device from its inlet, it means that the water purification device cannot produce water. When the water purification device includes a tank that can hold cold water, hot water, and warm water, even if no water flows into its inlet, the tank of the water purification device can still output the water stored inside. This is also a kind of operating state of the water purification device that includes a water storage tank.

[0153] In one embodiment, when the flow rate through the heating device is greater than or equal to the start-up flow rate of the heating device and the flow rate of the raw water is less than the preset total flow rate, if the water purification device receives the start-up water production information, it controls one of the heating device and the water purification device to be in operation.

[0154] In this embodiment, when the flow rate through the heating device is greater than or equal to the starting flow rate of the heating device, it indicates that the heating device has been turned on. At this time, if the water purification device receives the water production start-up information, that is, the water purification device needs to divert the soft water output from the softening device, since the raw water flow rate is less than the preset total flow rate, it means that the total flow rate on the soft water supply side is insufficient to meet the needs of both the heating device heating the soft water and the water purification device producing water based on the soft water. Under the above operating conditions, it can be ensured that one of the heating device and the water purification device operates normally while the other does not operate. Normal operation here means that the heating device can output hot soft water, or the water purification device can produce water based on the soft water. The value of the preset total flow rate can be set according to the water pressure and other conditions of a general user, and this application does not specifically limit its value.

[0155] Under the above operating conditions, if both the heating device and the water purification device are in use, in order to ensure that there is no conflict when the two are used, one of them can be controlled to be in normal operation. That is, according to the design requirements, the heating device can be kept in normal operation to heat the soft water and output it; or the operation of the heating device can be suspended and the water purification device can be put into operation to process the soft water through the filtration unit and then output purified water.

[0156] In one specific implementation, when the flow rate through the heating device is greater than or equal to the starting flow rate of the heating device and the flow rate of the raw water is less than the preset total flow rate, if the water purification device receives the start-up water production information, it maintains the heating device in operation and controls the soft water flowing out of the softening device to flow only into the heating device.

[0157] In this embodiment, under the aforementioned operating conditions, to ensure the heating device operates normally and thus guarantee the user's continuous access to hot soft water for a period of time (e.g., during bathing), the heating device is kept running at all times. If, during the operation of the heating device, the water purification device receives a water production activation signal, it also keeps the heating device running, controlling the soft water flowing out of the softening device to flow only into the heating device, ensuring a comfortable water experience for the user; in this case, the water purification device does not operate.

[0158] In another specific embodiment, when the flow rate through the heating device is greater than or equal to the starting flow rate of the heating device and the flow rate of the raw water is less than the preset total flow rate, the heating device is kept in operation, and the soft water flowing out of the softening device is controlled to flow only into the heating device; a portion of the raw water in the raw water supply pipeline is controlled to flow into the water purification device and the water purification device is started to produce water.

[0159] In this embodiment, under the aforementioned operating conditions, to ensure the heating device operates normally and thus allows the user to continuously use hot soft water for a period of time (e.g., during bathing), the heating device can be kept running at all times. If, during the operation of the heating device, the water purification device receives a water production activation signal, then, to ensure the water purification device can produce water and does not divert soft water, reference can be made to... Figures 8 to 11 As shown, by utilizing the diversion function of the inlet diversion unit, a portion of the raw water in the raw water supply pipeline is controlled to flow into the water purification device and the water purification device is started to produce water.

[0160] In one embodiment, when the flow rate through the heating device is greater than or equal to the start-up flow rate of the heating device and the flow rate of the raw water is greater than or equal to the preset total flow rate, if the water purification device receives the start-up water production information, it controls the soft water flowing out of the softening device to flow into the heating device and the water purification device; it controls the combustion load of the heating device so that the water temperature flowing out of the heating device reaches the preset temperature range, and controls the water purification device to be in operation.

[0161] In this embodiment, when the raw water flow rate is greater than or equal to the preset total flow rate, it indicates that the total flow rate on the soft water supply side can meet the needs of the heating device for heating soft water and the water purification device for producing water based on the soft water. Furthermore, when the flow rate through the heating device is greater than or equal to the starting flow rate of the heating device, it indicates that the heating device is turned on and can start normally to heat soft water.

[0162] Under the aforementioned operating condition two (i.e., the flow rate through the heating device is greater than or equal to the starting flow rate of the heating device and the flow rate of the raw water is greater than or equal to the preset total flow rate), if both the heating device and the water purification device have usage needs, theoretically both the heating device and the water purification device can enter normal operation. When the heating device is in operation, if the water purification device has a water production need, the water flow entering the heating device may be somewhat diverted while the total flow rate remains unchanged. To minimize the impact of this diversion on the temperature fluctuation of the hot soft water output by the heating device, the combustion load of the heating device can be adjusted to ensure that the water temperature exiting the heating device reaches the preset temperature range.

[0163] In one embodiment, when the flow rate to the water purification device is greater than or equal to the activation flow rate of the water purification device, the heating device receives activation information. If the flow rate through the heating device is greater than 0 and less than the activation flow rate of the heating device, and the flow rate to the water purification device is greater than or equal to a first preset flow rate, the soft water flowing out of the softening device continues to flow into the heating device and the water purification device. The first preset flow rate is greater than the activation flow rate of the water purification device.

[0164] In this embodiment, during the normal operation of the water purifier (i.e., the flow rate to the water purifier is greater than or equal to the starting flow rate of the water purifier), if the heating device receives a start-up message (the start-up message can be the user opening a faucet connected to the heating device), the flow rate through the heating device can be determined. If the flow rate through the heating device is less than the starting flow rate of the heating device, it means that the heating device cannot be started using the current flow rate. In this case, it is possible that the water pressure in the user's home is low, and although the water purifier is operating normally, its flow rate will not be too high; it is also possible that the water pressure in the user's home is high, the water purifier is operating normally and the flow rate is not too low, and the user may have opened the cold water side of the household faucet or limited the faucet flow rate to a level so low that it cannot be ignited normally, and is using cold water without any actual need for hot water.

[0165] If it is further determined that the flow rate through the water purification device is greater than or equal to the first preset flow rate, it indicates that the user's water pressure is normal or relatively high, and the heating device cannot ignite because the user does not need hot water. In this case, the soft water flowing out of the softening device can continue to flow into the heating device and the water purification device. The heating device will not heat water and will output a small flow rate of cold water, while the water purification device will operate normally with a relatively large flow rate. The first preset flow rate is less than the preset total flow rate, and its specific value can vary depending on the specific model and performance of the water purification device; this application does not impose a specific limitation on it.

[0166] In one embodiment, when the water purification device is in normal operation, the heating device receives a start-up message. If the flow rate through the heating device is greater than 0 and less than the start-up flow rate of the heating device, and the flow rate to the water purification device is less than a first preset flow rate, the soft water flowing out of the softening device is controlled to flow only into the heating device.

[0167] In this embodiment, when the water purifier is in operation, if the heating device receives a start-up message (which could be the user opening a faucet connected to the heating device), the flow rate through the heating device can be determined. If the flow rate through the heating device is less than the start-up flow rate, it means that the heating device cannot be started using the current flow rate. In this case, it is possible that the user's water pressure is low, and although the water purifier is operating normally, its flow rate is not high. Alternatively, it is possible that the user's water pressure is high, the water purifier is operating normally, and the flow rate is not low, and the user may have opened the cold water side of the tap or limited the tap's flow rate to a level too small to ignite properly, and is using cold water without any actual need for hot water.

[0168] If it is further determined that the flow rate through the water purifier is less than the first preset flow rate, it indicates that the water pressure in the user's home is low, and although the water purifier is operating normally, its flow rate will not be too high. In this case, in order to ensure the priority operation of the heating device, the soft water flowing out of the softening device can be controlled to flow only into the heating device, and the heating device can be started to heat the water while the operation of the water purifier is paused.

[0169] In one embodiment, when the water purification device is in normal operation, the heating device receives a start-up message. If the flow rate through the heating device is greater than or equal to the start-up flow rate of the heating device, the soft water flowing out of the softening device is maintained to flow into the heating device and the water purification device.

[0170] In this embodiment, during the normal operation of the water purification device, if the heating device receives a start-up message (which can be the user opening a faucet connected to the heating device), the flow rate through the heating device can be determined. If the flow rate through the heating device is greater than or equal to the start-up flow rate of the heating device, it means that the current flow rate through the heating device itself can start the heating device normally. At this time, the soft water flowing out of the softening device can be maintained to flow into the heating device and the water purification device, that is, the heating device can normally produce hot water, and the water purification device can normally produce water based on the soft water.

[0171] For implementation methods that only acquire the flow rate through the heating device, the following specific scenarios may be included:

[0172] When the heating device is running, if the water purification device receives the water production start information and detects that the flow rate through the heating device is greater than or equal to the second preset flow rate, it controls the soft water flowing out of the softening device to flow to the heating device and the water purification device.

[0173] When the heating device is running, if the water purification device receives a water production start-up message and detects that the flow rate through the heating device is less than the second preset flow rate, it controls the soft water flowing out of the softening device to flow only to the heating device.

[0174] For the above scenario, there are two different situations. In the first situation, if the water purifier lacks a communication module and cannot communicate with the controller in a timely manner, the water purifier may receive the start-up water production information but fail to send it to the controller promptly. In this case, it is necessary to wait for the soft water to flow through the water purifier for a period of time before assessing the impact of the water purifier's diversion on the heating device. In this case, the second preset flow rate can be the start-up flow rate of the heating device. In the second situation, if the water purifier has a communication module, it can receive the start-up water production information and send it to the controller promptly. In this case, the water purifier has not yet generated flow, and the flow rate through the heating device equals the total flow rate. The second preset flow rate can be set to a flow rate that supports the simultaneous use of the heating and water purifiers, for example, greater than or equal to the sum of the start-up flow rates of the heating and water purifiers. The operating status of the heating and water purifiers can then be controlled by measuring the flow rate through the heating device. The following explanation uses the first situation as an example.

[0175] When the heating device is in use, if the water purifier also needs to produce water, the flow rate of softened water flowing through the heating device after the water purifier is turned on can be determined first. If the detected softened water flow rate of the heating device is greater than or equal to its starting flow rate, it means that the softened water flow rate provided by the softening device is sufficient to ensure the normal ignition and start-up of the heating device, and the diversion after the water purifier is turned on does not affect the output of hot water from the heating device. In this case, the flow of softened water from the softening device can be controlled to flow to both the heating device and the water purifier. If the detected softened water flow rate of the heating device is less than its starting flow rate, it means that the softened water flow rate provided by the softening device is insufficient to ensure the normal ignition and start-up of the heating device, and the diversion after the water purifier is turned on affects the output of hot water from the heating device. In this case, priority can be given to ensuring that the softened water from the softening device flows to the heating device. In addition, to ensure the normal ignition and start-up of the heating device, the flow rate of softened water flowing to the heating device can be increased by means of pressurization.

[0176] Furthermore, for an implementation that only obtains the flow rate through the heating device, the control method may further include: if the flow rate of the heating device is greater than 0, controlling the soft water from the softening device to flow only to the heating device.

[0177] In other words, when the heating device is in use, the soft water is controlled to flow only to the heating device, so as to avoid the water purification device starting to work while the heating device is working, which would affect the normal use of the heating device, such as causing greater fluctuations in the outlet water temperature of the heating device, or even causing the heating device to malfunction.

[0178] In the water supply system described in this specification, the water purification device and the heating device can be directly and / or indirectly connected in communication. Specifically, a communication module can be provided on the water purification device side, and a communication module can also be provided on the heating device side. When the two communicate directly, at least one of the water purification device and the heating device can be equipped with a controller, which can transmit signals to the device equipped with at least one communication module. When the two communicate indirectly, a controller, a central controller, or a relay module can be provided in addition to the heating device and the water purification device. The controller can communicate with the communication modules of the heating device and the water purification device, and the start-up information of the heating device and the water purification device can be sent to the controller to ensure that the controller can obtain the usage requirements of the heating device and the water purification device in a timely manner, thereby accurately controlling the connectivity status of each pipeline in the system, the flow distribution, and the operating status of the heating device and the water purification device in combination with the flow signal.

[0179] Specifically, the controller can be located on the heating device side, and the controller located on the heating device side can directly obtain the start-up information of the heating device. The water purification device may include a communication module, which can interact with the controller. The communication module can at least send the start-up information of the water purification device to the controller.

[0180] Specifically, when the water supply system includes a water supply device, and the heating device and the softening device are located within the housing of the water supply device, the controller can be located on the side of the water supply device and can directly obtain the start-up information of the heating device. The water purification device may include a communication module, which can interact with the controller. The communication module can at least send the start-up information of the water purification device to the controller.

[0181] In some embodiments of this application, the controller can send various messages to the communication module of the water purification device, such as messages indicating that the water heater is producing hot water but the water purification device cannot produce water, messages indicating that the water heater is not in use but the water purification device can produce water normally, messages indicating that the water heater is producing hot water but the water purification device cannot produce water but can output water from the tank, etc. Based on the information sent by the controller reflecting the specific status of the heating device and the water purification device, the water purification device knows that it cannot produce water in the corresponding scenario, thus avoiding the centrifugal pump running dry, damaging components, and reducing its lifespan.

[0182] Of course, the specific location of the controller is not limited to the examples above; it can be set up independently or placed next to the water purification device. The heating device and water purification device can communicate with the controller via power line carrier communication. Power line carrier communication is a type of power system communication that uses power lines as the transmission medium for carrier signals. Because the controller communicates with the heating device and water purification device using power line carrier communication, existing power lines in the user's home can be used to transmit carrier signals, resulting in low cost and high reliability. The specific communication principle and working process of this power line carrier communication will not be elaborated upon here. Of course, the communication method between the heating device and water purification device and the controller is not limited to the examples above; communication methods such as Bluetooth, infrared, WiFi, and 4G / 5G can also be used, and this application does not impose specific limitations on these methods.

[0183] Any numerical values ​​cited herein include all values ​​ranging from a lower limit to an upper limit, increasing by one unit, with at least two units between any lower and any higher value. For example, if the quantity of a component or the value of a process variable (e.g., temperature, pressure, time, etc.) is described as being from 1 to 90, preferably from 20 to 80, more preferably from 30 to 70, the purpose is to illustrate that values ​​such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also explicitly listed in this specification. For values ​​less than 1, a unit is appropriately considered to be 0.0001, 0.001, 0.01, 0.1, etc. These are merely examples intended for explicit expression, and it can be assumed that all possible combinations of values ​​listed between the minimum and maximum values ​​are explicitly described in this specification in a similar manner.

[0184] Unless otherwise stated, all ranges include the endpoints and all numbers between them. The terms "approximately" or "about" used with ranges apply to both endpoints of the range. Thus, "approximately 20 to 30" is intended to cover "approximately 20 to approximately 30," including at least the specified endpoints.

[0185] All articles and references disclosed herein, including patent applications and publications, are incorporated herein by reference for various purposes. The term “substantially constitutes…” used to describe a combination should include the identified elements, components, parts, or steps, as well as other elements, components, parts, or steps that do not substantially affect the essential novelty of the combination. The use of the terms “comprising” or “including” to describe combinations of elements, components, parts, or steps herein also contemplates embodiments substantially constituted by such elements, components, parts, or steps. The use of the term “may” herein is intended to indicate that any described attribute included by “may” is optional.

[0186] Multiple elements, components, parts, or steps can be provided by a single integrated element, component, part, or step. Alternatively, a single integrated element, component, part, or step can be divided into multiple separate elements, components, parts, or steps. The use of "a" or "an" to describe an element, component, part, or step does not imply the exclusion of other elements, components, parts, or steps.

[0187] It should be understood that the above description is for illustrative purposes and not for limitation. Many embodiments and applications beyond the provided examples will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of this teaching should not be determined by reference to the above description, but rather by reference to the appended claims and the full scope of their equivalents. For purposes of completeness, all articles and references, including patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended as a waiver of that subject matter, nor should it be construed as an indication that the inventors have not considered that subject matter as part of the disclosed inventive subject matter.

Claims

1. A control method for a water supply system, characterized in that, The water supply system includes: a raw water supply pipeline; a softening device, the inlet of which is connected to the raw water supply pipeline; a heating device, the inlet of which is connected to the outlet of the softening device; a hot water supply pipeline, the hot water supply pipeline being connected to the outlet of the heating device; a water purification device, the inlet of which is connected to the outlet of the softening device; and a diversion mechanism, which diverts softened water flowing out of the softening device to the heating device and / or the water purification device; the water purification device includes a water filtration unit, and water flowing into the water purification unit... The softened water can flow into the water filtration unit; the water supply system further includes a first flow detection unit, a second flow detection unit, and a controller electrically connected to the first and second flow detection units. The first and second flow detection units can detect any two of the following flow rates: the flow rate of the raw water supply pipeline, the flow rate through the heating device, and the flow rate to the water purification device. The controller can control the flow direction of the softened water exiting the softening device based on the detection results of the first and second flow detection units. The control method includes: The raw water flowing into the raw water supply pipeline is controlled to flow into the softening device; At least one of the following flows is obtained: the flow rate of soft water flowing through the heating device, the flow rate of raw water supply pipeline, and the flow rate of soft water flowing through the water purification device; The operating status of the heating device and the water purification device is controlled based on the obtained flow rate; When the flow rate to the water purification device is greater than or equal to the starting flow rate of the water purification device, the heating device receives the start-up information. If the flow rate through the heating device is greater than 0 and less than the starting flow rate of the heating device, and the flow rate to the water purification device is greater than or equal to the first preset flow rate, the soft water flowing out of the softening device is maintained to flow into the heating device and the water purification device; the first preset flow rate is less than the preset total flow rate and greater than the starting flow rate of the water purification device. When the flow rate to the water purification device is greater than or equal to the start flow rate of the water purification device, the heating device receives the start information. If the flow rate through the heating device is greater than 0 and less than the start flow rate of the heating device, and the flow rate to the water purification device is less than the first preset flow rate, the soft water flowing out of the softening device is controlled to flow only into the heating device. When the flow rate to the water purification device is greater than or equal to the starting flow rate of the water purification device, the heating device receives the start-up information. If the flow rate through the heating device is greater than or equal to the starting flow rate of the heating device, the soft water flowing out of the softening device continues to flow into the heating device and the water purification device.

2. The control method for the water supply system as described in claim 1, characterized in that: When the flow rate through the heating device is greater than or equal to the starting flow rate of the heating device and the flow rate of the raw water is less than the preset total flow rate, if the water purification device receives the start-up water production information, it controls one of the heating device and the water purification device to be in operation.

3. The control method for the water supply system as described in claim 2, characterized in that: When the flow rate through the heating device is greater than or equal to the starting flow rate of the heating device and the flow rate of the raw water is less than the preset total flow rate, if the water purification device receives the start-up water production information, it maintains the heating device in operation and controls the soft water flowing out of the softening device to flow only into the heating device.

4. The control method for the water supply system as described in claim 1, characterized in that: When the flow rate through the heating device is greater than or equal to the starting flow rate of the heating device and the flow rate of the raw water is less than the preset total flow rate, if the water purification device receives the start-up water production information, it maintains the heating device in operation, controls the soft water flowing out of the softening device to flow only into the heating device, controls a portion of the raw water in the raw water supply pipeline to flow into the water purification device, and starts the water purification device to produce water.

5. The control method for the water supply system as described in claim 1, characterized in that: When the flow rate through the heating device is greater than or equal to the starting flow rate of the heating device and the flow rate of the raw water is greater than or equal to the preset total flow rate, if the water purification device receives the start-up water production information, it controls the soft water flowing out of the softening device to flow into the heating device and the water purification device. The combustion load of the heating device is controlled so that the water temperature flowing out of the heating device reaches a preset temperature range, thereby controlling the water purification device to be in operation.

6. The control method for the water supply system as described in claim 1, characterized in that: The water supply system also includes a controller located on the heating device side and a communication module located on the water purification device side. The communication module can interact with the controller and can at least send the start-up information of the water purification device to the controller.

7. The control method for the water supply system as described in claim 1, characterized in that: If the water purification device receives a water production start-up message and the flow rate through the heating device is greater than or equal to a second preset flow rate, the soft water flowing out of the softening device is controlled to flow to the heating device and the water purification device, and the second preset flow rate is greater than or equal to the sum of the start-up flow rate of the heating device and the start-up flow rate of the water purification device.

8. The control method for the water supply system as described in claim 1, characterized in that: If the water purification device receives a water production start-up message and the flow rate through the heating device is less than the second preset flow rate, the soft water flowing out of the softening device is controlled to flow only to the heating device, and the second preset flow rate is greater than or equal to the sum of the start-up flow rate of the heating device and the start-up flow rate of the water purification device.

9. The control method for the water supply system as described in claim 1, characterized in that, The diversion mechanism is located at the outlet of the softening device or on the connecting waterway between the outlet of the softening device and the inlet of the heating device.

10. The control method for the water supply system as described in claim 9, characterized in that, The diversion mechanism has an inlet, a first outlet, and a second outlet. The inlet is connected to the outlet of the softening device or the inlet is connected to the outlet of the softening device through part of the connecting water passage. The first outlet and the second outlet are respectively connected to the inlet of the heating device and the inlet of the water purification device.

11. The control method for the water supply system as described in claim 10, characterized in that, A flow regulating valve is provided between the second outlet and the water purification device or between the first outlet and the heating device.

12. The control method for the water supply system as described in claim 11, characterized in that, The water supply system further includes an inlet diversion unit, which is used to divert the inlet water of the raw water supply pipeline to the inlet of the softening device and / or the inlet of the water purification device.

13. The control method for the water supply system as described in claim 12, characterized in that, A bypass valve is connected between the inlet water diversion unit and the water purification device. When the bypass valve is in the open state, part of the raw water supplied by the raw water supply pipeline can flow to the water purification device.

14. The control method for the water supply system as described in claim 1, characterized in that, The water purification device includes an inlet valve installed on the inlet pipe of the water purification device.

15. The control method for the water supply system as described in claim 1, characterized in that, The water supply system also includes a booster pump installed on the raw water supply pipeline. When both the heating device and the water purification device are in operation, the booster pump is started and put into operation.

16. The control method for the water supply system as described in claim 1, characterized in that, The water filtration unit includes a membrane element, and the soft water flowing into the water filtration unit is filtered by the membrane element, and the resulting clean water flows out of the water filtration unit.

17. The control method for the water supply system as described in claim 16, characterized in that, The membrane element includes a reverse osmosis membrane element.

18. The control method for the water supply system as described in claim 16, characterized in that, The water purification device includes a heated tank for storing heated purified water.

19. The control method for the water supply system as described in claim 1, characterized in that, The water supply system includes a housing, and the heating device, the softening device, and the diversion mechanism are integrated within the housing.

20. The control method for the water supply system as described in claim 19, characterized in that, The shell is provided with a water inlet, a first water outlet, and a second water outlet; The water inlet section can be connected to the water inlet of the softening device and the raw water supply pipeline, respectively; The first water outlet can be connected to the water outlet of the heating device and the hot water supply pipeline, respectively; The second water outlet can be connected to both the water outlet of the softening device and the water purification device; The diversion mechanism is used to connect the outlet of the softening device with the inlet of the heating device and / or the second outlet.

21. The control method for the water supply system as described in claim 20, characterized in that, The diversion mechanism is located at the outlet of the softening device or in the connecting water path between the outlet of the softening device and the inlet of the heating device, and the connecting water path is located inside the housing.

22. The control method for the water supply system as described in claim 21, characterized in that, The diversion mechanism has an inlet, a first outlet, and a second outlet. The inlet is connected to the outlet of the softening device, and the first outlet and the second outlet are respectively connected to the inlet of the heating device and the second outlet. or The diversion mechanism has an inlet, a first outlet, and a second outlet. The inlet is connected to the outlet of the softening device through a portion of the connecting water passage. The first outlet and the second outlet are respectively connected to the inlet of the heating device and the second outlet.

23. The control method for the water supply system as described in claim 22, characterized in that, A flow regulating valve is provided between the second outlet and the second water outlet or between the first outlet and the heating device.

24. The control method for the water supply system as described in claim 23, characterized in that, The water supply system further includes an inlet diversion unit, which is used to divert the water from the inlet section to the inlet of the softening device and / or the second outlet section.

25. The control method for the water supply system as described in claim 24, characterized in that, A bypass valve is connected between the inlet water diversion unit and the second outlet water section. When the bypass valve is in the open state, part of the water provided by the inlet water diversion unit can flow to the second outlet water section.

26. The control method for the water supply system as described in claim 1 or 21, characterized in that, The flow distribution mechanism includes: a flow distribution valve.

27. The control method for a water supply system as described in claim 1 or 21, characterized in that, The heating device is a gas heating device, which includes a heat exchanger and a burner that provides heat energy to the heat exchanger.

28. The control method for the water supply system as described in claim 1, characterized in that, The water purification device is directly and / or indirectly connected to the heating device.

Images