Water supply system and gas water heater

Abstract

According to the water supply system, the input end of a first heating module is connected with a water inlet, and the output end of the first heating module is connected with a first water outlet and connected with the water inlet; the input end of the water purification module is connected to a passage between the input end of the first heating module and the water inlet, and the output end of the water purification module is connected with the input end of the first heating module and is connected with a second water outlet; the first valve is arranged on a passage between the input end of the water purification module and the input end of the first heating module, the second valve is arranged on a passage between the output end of the water purification module and the input end of the first heating module, and the third valve is arranged on a passage between the output end of the water purification module and the second water outlet; the control module is connected with the first heating module and the valve assembly. According to the water supply system, when a user faces different water use scenes, the requirements can be met only through the water supply system, and the use experience of the user is improved.

Description

Technical Field

[0001] The present application relates to the technical field of gas water heaters, and in particular to a water supply system and a gas water heater. Background Art

[0002] The invention of gas water heaters has greatly facilitated people's daily water use. At present, most gas water heaters can only heat domestic water. However, people may face a variety of water use scenarios in their daily use of gas water heaters. For example, the domestic water to be heated is not clean and cannot produce drinking water. When people face the above water use scenarios, traditional gas water heaters cannot meet people's needs, making people's experience of using gas water heaters poor. Summary of the invention

[0003] In view of this, in order to solve the above-mentioned technical problems or part of the technical problems, an embodiment of the present invention provides a water supply system and a gas water heater.

[0004] In a first aspect, the present application provides a water supply system, comprising:

[0005] Water inlet;

[0006] A first heating module, wherein an input end of the first heating module is connected to the water inlet, an output end of the first heating module is connected to a first water outlet, and an output end of the first heating module is also connected to the water inlet;

[0007] A water purification module, wherein the input end of the water purification module is connected to the passage between the input end of the first heating module and the water inlet, the output end of the water purification module is connected to the input end of the first heating module, and the output end of the water purification module is also connected to a second water outlet;

[0008] A valve assembly, the valve assembly comprising a first valve, a second valve and a third valve, the first valve being arranged on a passage between an input end of the water purification module and an input end of the first heating module, the second valve being arranged on a passage between an output end of the water purification module and an input end of the first heating module, and the third valve being arranged on a passage between an output end of the water purification module and the second water outlet;

[0009] A control module, wherein the control module is connected to the first heating module and the valve assembly respectively, and is used to control the first heating module and the valve assembly when a water supply mode instruction is obtained.

[0010] In an optional embodiment, the input end of the first heating module is provided with a first temperature sensor connected to the control module, and the first temperature sensor is used to detect the water inlet temperature of the first heating module;

[0011] The control module is also used for:

[0012] When the water supply mode instruction for instructing to start the purified drinking water function is obtained, determining whether the water supply system is in the first water supply mode, the first water supply mode is used to instruct to start the zero cold water domestic hot water function, when the water supply system is in the first water supply mode, the water flowing out from the output end of the first heating module circulates into the water inlet, and the first valve is opened, the first heating module is opened, the second valve is closed, and the third valve is closed;

[0013] When the water supply system is in the first water supply mode, obtaining the water inlet temperature of the first heating module;

[0014] If the water inlet temperature of the first heating module is lower than a first preset temperature threshold, the first valve, the second valve and the first heating module are controlled to be closed, so that the water flowing in from the water inlet is purified by the water purification module and then flows out from the second water outlet.

[0015] In an optional embodiment, the control module is further used for:

[0016] If the water inlet temperature of the first heating module is greater than or equal to the first preset temperature threshold, the water supply mode instruction for indicating the start of the purified drinking water function and the first prompt event corresponding to the triggering of the water purification module are not responded to.

[0017] In an optional embodiment, the water purification module includes: a first water purification unit, a second water purification unit and a third water purification unit connected in sequence, the first water purification unit is used to filter out impurities, the second water purification unit is used to sterilize, and the third water purification unit is used to absorb odor;

[0018] The input end of the first water purification unit is connected to the passage between the input end of the first heating module and the water inlet, the output end of the first water purification unit is connected to the input end of the first heating module, and the output end of the third water purification unit is connected to the second water outlet;

[0019] The first valve is arranged on the passage between the input end of the first water purification unit and the input end of the first heating module, the second valve is arranged on the passage between the output end of the first water purification unit and the input end of the first heating module, and the third valve is arranged on the passage between the output end of the first water purification unit and the input unit of the second water purification unit.

[0020] In an optional embodiment, the water supply system further includes: a first flow detection module and a second flow detection module connected to the control module, the first flow detection module being arranged on the passage between the input end of the first water purification unit and the water inlet, the second flow detection module being arranged on the passage between the output end of the third water purification unit and the second water outlet, the first flow detection unit being used to detect a first cumulative water flow passing through the first water purification unit, and the second flow detection unit being used to detect a second cumulative water flow passing through the first water purification unit, the second water purification unit and the third water purification unit;

[0021] The control module is also used for:

[0022] In the process of controlling the first heating module and the valve assembly, determining the status information of the first water purification unit, the second water purification unit and the third water purification unit;

[0023] Obtaining the first accumulated water flow and the second accumulated water flow;

[0024] According to the state information, the first accumulated water flow rate and the second accumulated water flow rate,

[0025] The first water purification unit, the second water purification unit and the third water purification unit are tested.

[0026] In an optional embodiment, the control module is further used for:

[0027] When the state information includes that the first water purification unit is in use and the second water purification unit and the third water purification unit are both in unused states, determining a water flow sum value between the first cumulative water flow and the second cumulative water flow;

[0028] When the water flow and value is greater than or equal to a first preset threshold, a second prompt event corresponding to the first water purification unit is triggered.

[0029] In an optional embodiment, the control module is further used for:

[0030] When the state information includes that the first water purification unit, the second water purification unit, and the third water purification unit are all in use, determining a water flow sum value between the first cumulative water flow and the second cumulative water flow;

[0031] When the water flow and value are greater than or equal to a first preset threshold, triggering a second prompt event corresponding to the first water purification unit;

[0032] When the second accumulated water flow rate is greater than a second preset threshold, a third prompt event corresponding to the second water purification unit and a fourth prompt event corresponding to the third water purification unit are triggered.

[0033] In an optional embodiment, the water supply system further includes: a second heating module connected to the control module, the output end of the water purification module is also connected to the input end of the second heating module, and the output end of the second heating module is connected to the second water outlet;

[0034] The control module is also used for:

[0035] When the water supply mode instruction is obtained, the first heating module, the second heating module and the valve assembly are controlled.

[0036] In an optional embodiment, a second temperature sensor is provided at the input end of the second heating module, and a third temperature sensor is provided at the output end of the second heating module, the second temperature sensor and the third temperature sensor are both connected to the control module, the second temperature sensor is used to detect the water inlet temperature of the second heating module, and the third temperature sensor is used to detect the water outlet temperature of the second heating module;

[0037] The control module is also used for:

[0038] When the water supply mode instruction for instructing to start the drinking water purification function is obtained, determining whether the water supply system is in another water supply mode;

[0039] When the water supply system is not in other water supply modes, obtaining a target purified water temperature, controlling the first valve, the second valve and the first heating module to be closed, and controlling the third valve and the second heating module to be opened, so that the water flowing in from the water inlet is purified by the water purification module and then flows into the second heating module;

[0040] When the purified water flows into the second heating module, obtaining the water inlet temperature of the second heating module;

[0041] Determining a target power of the second heating module according to the target purified water temperature and the water inlet temperature of the second heating module;

[0042] controlling the second heating module to operate according to the target power;

[0043] When the second heating module operates according to the target power, obtaining the outlet water temperature of the second heating module;

[0044] The target power is updated according to the outlet water temperature of the second heating module and the target purified water temperature, so that the second heating module operates according to the updated target power until the outlet water temperature of the second heating module reaches the target purified water temperature.

[0045] In a second aspect, the present application provides a gas water heater, comprising the water supply system as described above.

[0046] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art. The water supply system provided by the embodiment of the present application is provided with a water purification module and a valve assembly. The input end of the water purification module is connected to the passage between the output end of the first heating module and the water inlet, the output end of the water purification module is connected to the input end of the first heating module, and the output end of the water purification module is also connected to the second water outlet. The first valve in the valve assembly is arranged on the passage between the input end of the water purification module and the input end of the first heating module, the second valve in the valve assembly is arranged on the passage between the output end of the water purification module and the input end of the first heating module, and the third valve in the valve assembly is arranged on the passage between the output end of the water purification module and the second water outlet. In this way, when the control module obtains the water supply mode instruction, the switch state of the first valve, the second valve, and the third valve in the valve assembly can be controlled, so that the water from the water inlet flows through the corresponding passage according to the different valve switch states, so that water that meets different water supply modes can be obtained, so that when the user faces different water use scenarios, only the water supply system can meet the needs, thereby improving the user's use experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0048] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0049] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0050] Figure 1 A schematic diagram of the structure of a water supply system provided in an embodiment of the present application;

[0051] Figure 2 A schematic diagram of the structure of another water supply system provided in an embodiment of the present application;

[0052] Figure 3 A schematic diagram of a water supply system provided in an embodiment of the present application;

[0053] Figure 4 A schematic flow chart of a control method for a water supply system provided in an embodiment of the present application;

[0054] Figure 5 A flow chart of another water supply system control method provided in an embodiment of the present application;

[0055] Figure 6 A schematic diagram of the structure of a gas water heater provided in an embodiment of the present application;

[0056] In the above attached figure:

[0057] 1. Water supply system; 2. Gas water heater; 10. Water inlet; 20. First heating module; 21. First water outlet; 30. Water purification module; 31. First water purification unit; 32. Second water purification unit; 321. Third water outlet; 33. Third water purification unit; 40. First valve; 41. Second valve; 42. Third valve; 43. Fourth valve; 50. Control module; 60. First temperature sensor; 70. Second temperature sensor; 80. Third temperature sensor; 90. First flow detection module; 100. Second flow detection module; 110. Second heating module; 111. Second water outlet; 112. Fourth water outlet; 120. Water outlet hose; 130. First pump body; 140. Second pump body; 150. Water circuit high pressure switch; 160. Faucet; 170. Air inlet. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0059] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0060] refer to Figures 1 to 3 The present embodiment provides a water supply system 1, comprising: a water inlet 10, a first heating module 20, a water purification module 30, a valve assembly and a control module 50.

[0061] The first heating module 20 is used to heat domestic water. The input end of the first heating module 20 is connected to the water inlet 10, and the output end of the first heating module 20 is connected to the first water outlet 21, and the first heating module 20 is also connected to the water inlet 10. Among them, the first water outlet 21 is used to output heated domestic water. Since the first heating module 20 is connected to the water inlet 10, when it is necessary to meet the demand for zero cold water domestic water, the water in the passage between the water inlet 10 and the input end of the first heating module 20 is heated by the first heating module 20. The water in the passage between the output end of the first heating module 20 and the water inlet 10 is heated, so that when the user uses water, zero cold water can be obtained. The first heating module 20 is actually a gas heating module.

[0062] The water purification module 30 is used to purify water. The input end of the water purification module 30 is connected to the passage between the input end of the first heating module 20 and the water inlet 10, the output end of the water purification module 30 is connected to the input end of the first heating module 20, and the output end of the water purification module 30 is also connected to the second water outlet 111. Among them, the second water outlet 111 is used to output drinking water. It should be noted that the output end of the water purification module 30 includes the first output end of the water purification module 30 and the second output end of the water purification module 30, the first output end of the water purification module 30 is connected to the input end of the first heating module 20, and the second output end of the water purification module 30 is also connected to the second water outlet 111. The purification module is actually composed of a filter element.

[0063] The valve assembly is used to control the flow direction of water. The valve assembly includes a first valve 40, a second valve 41 and a third valve 42. The first valve 40 is arranged on the passage between the input end of the water purification module 30 and the input end of the first heating module 20, the second valve 41 is arranged on the passage between the output end of the water purification module 30 and the input end of the first heating module 20, and the third valve 42 is arranged on the passage between the output end of the water purification module 30 and the second water outlet 111. Specifically, the second valve 41 is arranged on the passage between the first output end of the water purification module 30 and the input end of the first heating module 20, and the third valve 42 is arranged on the passage between the second output end of the water purification module 30 and the second water outlet 111. The first valve 40, the second valve 41 and the third valve 42 are all solenoid valves.

[0064] When the function of purifying drinking water needs to be started, the first valve 40 can be controlled to be closed, the second valve 41 can be closed, the third valve 42 can be controlled to be opened, and the first heating module 20 can be controlled to be closed, so that the water flowing in from the water inlet 10 can be purified by the purification module and then flow out from the second water outlet 111. When the function of non-purified non-zero cold water domestic hot water is started, the first valve 40 can be controlled to be opened, the second valve 41 can be closed, the third valve 42 can be controlled to be closed, and the first heating module 20 can be controlled to be opened, so that the water flowing in from the water inlet 10 can be heated by the first heating module 20 and then flow out from a water outlet. When the function of purifying non-zero cold water domestic hot water is started, the first valve 40 can be controlled to be closed, the second valve 41 can be opened, the third valve 42 can be controlled to be closed, and the first heating module 20 can be controlled to be opened, so that the water flowing in from the water inlet 10 can be purified by the water purification module 30 and then flow into the first heating module 20, and the first heating module 20 can heat it and then flow out from the first water outlet 21. When the zero cold water domestic hot water function is started, the first valve 40 can be controlled to be opened, the second valve 41 can be closed, the third valve 42 can be closed, and the first heating module 20 can be opened, so that the water flowing in from the water inlet 10 is heated by the first heating module 20 and then flows out from the first water outlet 21, and can also circulate into the first heating module 20 through the passage between the output end of the first heating module 20 and the water inlet 10 for heating, so that hot water can be obtained when water is used. It should be noted that when the zero cold water domestic hot water function is started, there will always be circulating hot water. If the circulating hot water is allowed to pass through the water purification module 30, the life of the water purification module 30 will be affected. In addition, the drinking water purification function has been started in the water supply system. If the zero cold water domestic hot water function needs to be started, the zero cold water domestic water use function will not be started, so as to give priority to the drinking water purification function and improve the user experience. For details, please refer to Figure 4 In the water supply system 1, the zero cold water domestic hot water function has been activated. If the drinking water purification function needs to be activated, the user experience and the service life of the water supply system need to be considered, and the above function switching needs to be further judged. For details, please refer to the following description, which will not be repeated in this embodiment.

[0065] The control module 50 is used to control the water supply system 1. The control module 50 is connected to the first heating module 20, and the control module 50 is also connected to the first valve 40, the second valve 41 and the third valve 42 in the valve assembly. When the control module 50 obtains the water supply mode instruction, it can control the first heating module 20 and the valve assembly according to the water supply mode instruction. Controlling the first heating module 20 can be understood as: controlling the switch state of the first heating module 20. Controlling the valve assembly can be understood as: controlling the switch state of the first valve 40, the second valve 41 and the third valve 42 in the valve assembly.

[0066] The water supply system 1 may further include a display module, in which preset buttons corresponding to a plurality of preset water supply modes may be displayed. When a pressing signal for a preset button is detected, a water supply mode instruction is determined according to the preset water supply mode corresponding to the preset button. When the water supply mode instruction is obtained, the first heating module 20, the first valve 40, the second valve 41 and the third valve 42 are controlled according to the water supply mode instruction, so that the output of non-purified domestic hot water, the output of purified domestic hot water, the output of purified drinking water, the output of non-purified domestic water and purified drinking water, and the output of purified domestic water and purified drinking water can be realized.

[0067] Continue to refer Figure 1 to Figure 3 A water supply system provided in this embodiment also includes: a second heating module 110, a second temperature sensor 70 is provided at the input end of the second heating module 110, and a third temperature sensor 80 is provided at the output end of the second heating module 110, and the second heating module 110, the second temperature sensor 70 and the third temperature sensor 80 are all connected to the control module 50.

[0068] The second heating module 110 is used to heat the purified drinking water flowing out of the water purification module 30. The output end of the water purification module 30 is also connected to the input end of the second heating module 110, and the output end of the second heating module 110 is connected to the second water outlet 111. Among them, the second output end of the water purification module 30 is also connected to the input end of the second heating module 110. The second heating module 110 is actually an electric heating module. Since the heating temperature of the gas heating module is relatively low, in order to achieve the heating of purified drinking water to meet the user's use needs, an electric heating module is connected to the water purification module 30 so that the electric heating module heats the purified drinking water flowing out of the purification module and flows out from the second water outlet 111. Specifically, when the control module 50 obtains the water supply mode instruction, the first heating module 20, the second heating module 110 and the valve assembly are controlled according to the target water supply module to meet the target water supply mode requirements.

[0069] The second temperature sensor 70 is used to detect the water inlet temperature of the second heating module 110, and the third temperature sensor 80 is used to detect the water outlet temperature of the second heating module 110. During the operation of the second heating module 110, the control module 50 can determine the power of the second heating module 110 according to the water inlet temperature of the second heating module 110 detected by the second temperature sensor 70 and the water outlet temperature of the second heating module 110 detected by the third temperature sensor 80, so as to achieve the temperature of the water output from the second water outlet 111 to reach the target purified water temperature. Specifically, the control module 50 can control the power of the second heating module 110 in the following manner, as follows:

[0070] When a water supply mode instruction for starting a drinking water purification function is obtained, determining whether the water supply system is in another water supply mode;

[0071] When the water supply system is not in other water supply modes, the target purified water temperature is obtained, the first valve 40, the second valve 41 and the first heating module 20 are controlled to be closed, and the third valve 42 and the second heating module 110 are controlled to be opened, so that the water flowing in from the water inlet 10 is purified by the water purification module 30 and then flows into the second heating module 110;

[0072] When the purified water flows into the second heating module 110, the water inlet temperature of the second heating module 110 is obtained;

[0073] Determine the target power of the second heating module 110 according to the target purified water temperature and the inlet water temperature of the second heating module 110;

[0074] Controlling the second heating module 110 to operate according to the target power;

[0075] When the second heating module 110 is operating at the target power, obtaining the outlet water temperature of the second heating module 110;

[0076] According to the outlet water temperature of the second heating module 110 , the target power is updated so that the second heating module 110 operates according to the updated target power until the outlet water temperature of the second heating module 110 reaches the target purified water temperature.

[0077] Specifically, the target purified water temperature can be set by the user based on the display module. When the water supply instruction for turning on the function of purifying drinking water is obtained, it indicates that the user needs to purify drinking water. If the water supply system here is not in other water supply modes, the first valve 40, the second valve 41 and the first heating module 20 can be controlled to close and the third valve 42 and the second heating module 110 can be controlled to open, so that the water flowing in from the water inlet 10 can flow into the second heating module 110 for heating only after being purified by the water purification module 30, so as to achieve rapid water production of purified drinking water. When the second heating module 110 is working, in order to achieve rapid heating of purified drinking water, when the purified water flows into the second heating module 110, the inlet water temperature of the second heating module 110 is obtained, so as to query the first association according to the inlet water temperature of the second heating module 110 and the target purified water temperature, so as to obtain the target power of the second heating module 110, and the first association stores multiple groups of corresponding relationships between inlet water temperature, purified water temperature and power. The power set in the first association is used to indicate the power that can quickly make the outlet water temperature of the second heating module 110 reach the vicinity of the purified water temperature. After obtaining the target power, the second heating module 110 can be controlled to operate according to the target power. During the operation of the second heating module 110 according to the target power, the water outlet temperature of the second heating module 110 can be obtained. The target power can be continuously updated using a PID control algorithm based on the water outlet temperature of the second heating module 110 and the target purified water temperature. After the target power is updated, the second heating module 110 can be controlled to operate according to the updated target power, so that the water outlet temperature of the second heating module 110 reaches the target purified water temperature, thereby improving the accuracy of temperature control of the second heating module 110.

[0078] In the above, when the water supply system 1 is in a water supply mode other than the first water supply mode, the steps of obtaining the target purified water temperature, controlling the first valve 40, the second valve 41 and the first heating module 20 to be closed, and controlling the third valve 42 and the second heating module 110 to be opened can be performed. The first water supply mode is used to indicate the opening of the zero cold water domestic hot water function. When the water supply system is in the first water supply mode, the water flowing out from the output end of the first heating module 20 circulates into the water inlet 10, and the first valve 40 is opened, the first heating module 20 is opened, the second valve 41 is closed, and the third valve 42 is closed. Since when the water supply system is in the first water supply mode, if the water supply instruction for indicating to start the drinking water purification function is responded, the high-temperature circulating water will flow from the water inlet 10 into the water purification module 30, which will have a certain impact on the life of the filter element in the water purification module 30. Therefore, when the water supply system is in the first water supply mode, the control module 50 needs to further judge according to the water inlet temperature of the first heating module 20 to execute the steps of obtaining the target purified water temperature, controlling the first valve 40, the second valve 41 and the first heating module 20 to close, and controlling the third valve 42 and the second heating module 110 to open. Among them, a first temperature sensor 60 can be set at the input end of the first heating module 20, and the first temperature sensor 60 is connected to the control module 50. The first temperature sensor 60 is used to detect the water inlet temperature of the first heating module 20. The control module 50 is also used to:

[0079] When the water supply system 1 is in the first water supply mode, obtaining the water inlet temperature of the first heating module 20;

[0080] If the water inlet temperature of the first heating module 20 is lower than the first preset temperature threshold, the steps of obtaining the target purified water temperature, controlling the first valve 40, the second valve 41 and the first heating module 20 to close are performed;

[0081] If the water inlet temperature of the first heating module 20 is greater than or equal to the first preset temperature threshold, the water supply mode instruction for indicating to start the drinking water purification function and triggering the first prompt event corresponding to the water purification module 30 are not responded.

[0082] Among them, the first preset temperature threshold can be set according to actual needs, and the specific value of the first preset temperature threshold is not specifically limited in this embodiment. The first prompt event can be understood as: a reminder on the display module that the water purification module 30 cannot be used. It should be noted that when the water supply system does not include the second heating module 110, when the water supply mode instruction for indicating to turn on the purified drinking water function is obtained, it is determined whether the water supply system 1 is in the first water supply mode. When the water supply system 1 is in the first water supply mode, the above-mentioned step of obtaining the water inlet temperature of the first heating module 20 is executed. For details, please refer to the above description, which will not be repeated in this embodiment.

[0083] Continue to refer Figure 1 to Figure 3 The water purification module 30 further includes: a first water purification unit 31, a second water purification unit 32 and a third water purification unit 33 connected in sequence, the first water purification unit 31 is used to filter out impurities, the second water purification unit 32 is used for sterilization, and the third water purification unit 33 is used to absorb odor. The first water purification unit 31 is actually a pre-treatment filter element, the second water purification unit 32 is actually a PO filter element, and the third water purification unit 33 is actually a post-treatment filter element. Among them, the input end of the first water purification unit 31 is connected to the passage between the input end of the first heating module 20 and the water inlet 10, the output end of the first water purification unit 31 is connected to the input end of the first heating module 20, the output end of the third water purification unit 33 is connected to the second water outlet 111, the first valve 40 is arranged on the passage between the input end of the first water purification unit 31 and the input end of the first heating module 20, the second valve 41 is arranged on the passage between the output end of the first water purification unit 31 and the input end of the first heating module 20, and the third valve 42 is arranged on the passage between the output end of the first water purification unit 31 and the input unit of the second water purification unit 32.

[0084] Specifically, the first water purification unit 31, the second water purification unit 32 and the third water purification unit 33 connected in sequence can be understood as follows: the output end of the first water purification unit 31 is connected to the input end of the second water purification unit 32, and the output end of the second water purification unit 32 is connected to the input end of the third water purification unit 33. Among them, the output end of the first water purification unit 31 includes the first output end of the first water purification unit 31 and the second output end of the first water purification unit 31, the first output end of the first water purification unit 31 is connected to the input end of the first heating module 20, and the second output end of the first water purification unit 31 is connected to the input end of the second water purification unit 32. When it is necessary to purify domestic hot water, since the degree of purification required for purifying domestic hot water is not high, if the purification method used is consistent with the purification method for purifying drinking water, it will have a certain impact on the filter element in the purification module. Therefore, in this embodiment, the water purification module 30 is divided so that when it is necessary to purify domestic hot water, it only needs to be roughly purified through the first water purification unit 31, and only when it is necessary to purify drinking water, it will pass through the first water purification unit 31, the second water purification unit 32 and the third water purification unit 33 at the same time. When choosing to use only the first water purification unit 31 or to use the first water purification unit 31 , the second water purification unit 32 and the third water purification unit 33 simultaneously, it can be achieved by controlling different valve combinations among the first valve 40 , the second valve 41 and the third valve 42 .

[0085] Continue to refer Figure 1 to Figure 3If the water supply system includes the second heating module 110, when the function of purifying drinking water needs to be started, the first valve 40 can be controlled to be closed, the second valve 41 can be closed, the third valve 42 can be opened, the first heating module 20 can be closed, and the second heating module 110 can be opened, so that the water flowing in from the water inlet 10 flows into the second heating module 110 after being purified by the purification module, and the second heating module 110 heats the purified water according to the target purified water temperature set by the user, so as to flow out from the second water outlet 111. It should be noted that when other water supply functions need to be started, the control method is consistent with the above, and the details can be referred to the above, which will not be repeated in this embodiment.

[0086] Continue to refer Figure 1 to Figure 3 The water supply system 1 provided in this embodiment also includes a first pump body 130 and a second pump body 140 connected to the control module 50. The first pump body 130 is arranged on the passage between the input end of the first water purification unit 31 and the input end of the first heating module 20 and is located between the first valve body and the input end of the first heating module 20. The second pump body 140 is arranged on the passage between the second output end of the first water purification unit 31 and the input end of the second water purification unit 32 and is located between the third valve 42 and the input end of the second water purification unit 32. The first pump body 130 is used to control the flow direction of water according to the switch states of the first valve 40, the second valve 41 and the third valve 42 when there is no purification of non-zero cold water domestic hot water function, purification of non-zero cold water domestic hot water function and zero cold water domestic hot water function. The second pump body 140 is used to control the flow direction of water according to the switch states of the first valve 40, the second valve 41 and the third valve 42 when the drinking water purification function is started, thereby achieving water purification. The second pump body 140 is actually a water purification diaphragm pump.

[0087] Continue to refer Figure 1 to Figure 3The water supply system 1 provided in this embodiment further includes a first flow detection module 90 and a second flow detection module 100. Both the first flow detection module 90 and the second flow detection module 100 are connected to the control module 50. The first flow detection module 90 is arranged on the passage between the input end of the first water purification unit 31 and the water inlet 10, and the second flow detection module 100 is arranged on the passage between the output end of the third water purification unit 33 and the second water outlet 111. Wherein, when the water supply system 1 includes the second heating module 110, the second flow detection module 100 is arranged on the passage between the output end of the third water purification unit 33 and the input end of the second heating module 110. The first flow detection module 90 is used to detect the first cumulative water flow through the first water purification unit 31, and the second flow detection module 100 is used to detect the second cumulative water flow through the first water purification unit 31 and the second water purification unit 32. Since the first water purification unit 31 is used when the function of purifying non-zero cold water domestic water is started, if the service life of the first water purification unit 31, the second water purification unit 32 and the third water purification unit 33 are calculated together, the resources of the second water purification unit 32 and the third water purification unit 33 will be wasted. Therefore, the control module 50 of this embodiment calculates the service life of the first water purification unit 31 separately from the service life of the second water purification unit 32 and the third water purification unit 33 to determine whether the first water purification unit 31, the second water purification unit 32 and the third water purification unit 33 need to be replaced. It should be noted that the first flow detection module 90 is actually a water flow sensor, and the second flow detection module 100 is actually a flow control pump.

[0088] Specifically, the control module 50 can determine whether to replace the first water purification unit 31, the second water purification unit 32 and the third water purification unit 33 in the following manner:

[0089] In the process of controlling the first heating module 20 and the valve assembly, the status information of the first water purification unit 31, the second water purification unit 32 and the third water purification unit 33 is determined;

[0090] Obtaining a first accumulated water flow rate and a second accumulated water flow rate;

[0091] The first water purification unit 31 , the second water purification unit 32 , and the third water purification unit 33 are detected according to the state information, the first cumulative water flow rate, and the second cumulative water flow rate.

[0092] In the above, if the water supply system includes the second heating module 110, when determining the status information of the first water purification unit 31, the second water purification unit 32 and the third water purification unit 33, it can be executed during the control process of the first heating module 20, the second heating module 110 and the valve assembly.

[0093] Furthermore, the control module 50 is also used for:

[0094] When the state information includes that the first water purification unit 31 is in use and the second water purification unit 32 and the third water purification unit 33 are both in unused states, determining a water flow sum value between the first cumulative water flow and the second cumulative water flow;

[0095] When the water flow and value are greater than or equal to the first preset threshold, a second prompt event corresponding to the first water purification unit 31 is triggered;

[0096] When the state information includes that the first water purification unit 31, the second water purification unit 32 and the third water purification unit 33 are all in use, determining a water flow sum value between the first cumulative water flow and the second cumulative water flow;

[0097] When the water flow and value are greater than or equal to the first preset threshold, a second prompt event corresponding to the first water purification unit 31 is triggered;

[0098] When the second accumulated water flow rate is greater than the second preset threshold, a third prompt event corresponding to the second water purification unit 32 and a fourth prompt event corresponding to the third water purification unit 33 are triggered.

[0099] Among them, the first preset threshold value and the second preset threshold value can be set according to actual needs, and the specific values ​​of the first preset threshold value and the second preset threshold value are not specifically limited in this embodiment. When the first water purification unit 31 is in use and the second water purification unit 32 and the third water purification unit 33 are not in use, it indicates that the function of purifying non-zero cold water and hot water is started; when the first water purification unit 31, the second water purification unit 32 and the third water purification unit 33 are all in use, it indicates that the function of purifying drinking water is started or the function of purifying drinking water and the function of purifying non-zero cold water and hot water are started at the same time. When the water flow and value are greater than or equal to the first preset threshold value, it indicates that the service life of the first water purification unit 31 has reached the limit and the first water purification unit 31 needs to be replaced; when the second cumulative water flow is greater than the second preset threshold value, it indicates that the service life of the second water purification unit 32 and the third water purification unit 33 has reached the limit and the second water purification unit 32 and the third water purification unit 33 need to be replaced. The second prompt event can be understood as: reminding the display module that the first water purification unit 31 needs to be replaced. The third reminder event can be understood as: reminding the display module that the second water purification unit 32 needs to be replaced. The fourth reminder event can be understood as: reminding the display module that the third water purification unit 33 needs to be replaced. Through the above method, the service life of the first water purification unit 31, the second water purification unit 32 and the third water purification unit 33 is monitored, so that when the service life reaches the limit, the user can be reminded to replace it immediately, ensuring the user's healthy water use and improving the user's experience. For details, please refer to Figure 5 shown.

[0100] refer to Figure 1 and Figure 2 As shown, a water supply system 1 provided in this embodiment further includes a wastewater pipeline, the input end of the wastewater pipeline is connected to the output end of the second water purification unit 32, and the output end of the wastewater pipeline is connected to the third water outlet 321. Among them, the output end of the second water purification unit 32 includes the first output end of the second water purification unit 32 and the second output end of the second water purification unit 32, the first output end of the second water purification unit 32 is connected to the input end of the third water purification unit 33, and the second output end of the second water purification unit 32 is connected to the wastewater pipeline. The valve assembly also includes a fourth valve 43, which is arranged on the wastewater pipeline to control the fourth valve 43 to open when the drinking water purification function is started and wastewater needs to be discharged, so that wastewater is discharged from the third water outlet 321 through the wastewater pipeline.

[0101] refer to Figure 3 The water supply system 1 provided in this embodiment further includes a water outlet hose 120 and a fourth water outlet 112, one end of the fourth water outlet 112 is connected to the output end of the second heating module 110, and the other end of the fourth water outlet 112 is connected to the water outlet hose 120, and the water outlet hose 120 is connected to a faucet 160. The water supply system further includes a water circuit high pressure switch 150, which is arranged on the passage between the output end of the third water purification unit 33 and the input end of the second heating module 110, so as to cooperate with the second pump body 140 to control the start and stop of the second pump body 140. Specifically, the second water outlet 111 needs to be operated by lifting the hand. Even if a water intake baffle is set under the machine, since the installation position is limited by the air pipe and the water pipe, there are still problems such as inconvenient water intake. The fourth water outlet 112 is set to be connected to the water outlet hose 120, and it can be selectively installed according to the user's usual water intake position. In this way, water can be taken by opening the faucet 160. When it is closed, since the second pump body 140 cannot be stopped immediately, the water high-pressure switch 150 can be set to intelligently detect the water pressure of the water purification pipeline to stop the water purification system.

[0102] Continue to refer Figure 1 to Figure 3 The water supply system 1 provided in this embodiment further includes an air inlet 170. When supplying water, the air inlet 170 can be controlled to open to produce bubble water.

[0103] A water supply system provided in the present embodiment is provided with a water purification module and a valve assembly, wherein the input end of the water purification module is connected to the passage between the output end of the first heating module and the water inlet, the output end of the water purification module is connected to the input end of the first heating module, the output end of the water purification module is also connected to the second water outlet, the first valve in the valve assembly is arranged on the passage between the input end of the water purification module and the input end of the first heating module, the second valve in the valve assembly is arranged on the passage between the output end of the water purification module and the input end of the first heating module, and the third valve in the valve assembly is arranged on the passage between the output end of the water purification module and the second water outlet, so that when the control module obtains the water supply mode instruction, the switching state of the first valve, the second valve and the third valve in the valve assembly can be controlled, so that the water from the water inlet flows through the corresponding passage according to the different valve switching states, so that water that meets different water supply modes can be obtained, so that when the user faces different water use scenarios, only the water supply system can meet the needs, thereby improving the user's use experience.

[0104] refer to Figure 6 This embodiment also provides a gas water heater 2, which includes the water supply system as described above.

[0105] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.

[0106] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A water supply system, It is characterized in that include: Water inlet; A first heating module, wherein an input end of the first heating module is connected to the water inlet, an output end of the first heating module is connected to a first water outlet, and an output end of the first heating module is also connected to the water inlet; A water purification module, wherein the input end of the water purification module is connected to the passage between the input end of the first heating module and the water inlet, the output end of the water purification module is connected to the input end of the first heating module, and the output end of the water purification module is also connected to a second water outlet; A valve assembly, the valve assembly comprising a first valve, a second valve and a third valve, the first valve being arranged on a passage between an input end of the water purification module and an input end of the first heating module, the second valve being arranged on a passage between an output end of the water purification module and an input end of the first heating module, and the third valve being arranged on a passage between an output end of the water purification module and the second water outlet; A control module, wherein the control module is connected to the first heating module and the valve assembly respectively, and is used to control the first heating module and the valve assembly when a water supply mode instruction is obtained.

2. The water supply system according to claim 1, It is characterized in that The input end of the first heating module is provided with a first temperature sensor connected to the control module, and the first temperature sensor is used to detect the water inlet temperature of the first heating module; The control module is also used for: When the water supply mode instruction for instructing to start the purified drinking water function is obtained, determining whether the water supply system is in the first water supply mode, the first water supply mode is used to instruct to start the zero cold water domestic hot water function, when the water supply system is in the first water supply mode, the water flowing out from the output end of the first heating module circulates into the water inlet, and the first valve is opened, the first heating module is opened, the second valve is closed, and the third valve is closed; When the water supply system is in the first water supply mode, obtaining the water inlet temperature of the first heating module; If the water inlet temperature of the first heating module is lower than a first preset temperature threshold, the first valve, the second valve and the first heating module are controlled to be closed, so that the water flowing in from the water inlet is purified by the water purification module and then flows out from the second water outlet.

3. The water supply system according to claim 2, It is characterized in that The control module is also used for: If the water inlet temperature of the first heating module is greater than or equal to the first preset temperature threshold, the water supply mode instruction for indicating the start of the purified drinking water function and the first prompt event corresponding to the triggering of the water purification module are not responded to.

4. The water supply system according to claim 1, It is characterized in that The water purification module comprises: a first water purification unit, a second water purification unit and a third water purification unit connected in sequence, the first water purification unit is used to filter out impurities, the second water purification unit is used to sterilize, and the third water purification unit is used to absorb odor; The input end of the first water purification unit is connected to the passage between the input end of the first heating module and the water inlet, the output end of the first water purification unit is connected to the input end of the first heating module, and the output end of the third water purification unit is connected to the second water outlet; The first valve is arranged on the passage between the input end of the first water purification unit and the input end of the first heating module, the second valve is arranged on the passage between the output end of the first water purification unit and the input end of the first heating module, and the third valve is arranged on the passage between the output end of the first water purification unit and the input unit of the second water purification unit.

5. The water supply system according to claim 4, It is characterized in that The water supply system further comprises: a first flow detection module and a second flow detection module connected to the control module, the first flow detection module being arranged on the passage between the input end of the first water purification unit and the water inlet, the second flow detection module being arranged on the passage between the output end of the third water purification unit and the second water outlet, the first flow detection unit being used to detect a first cumulative water flow passing through the first water purification unit, and the second flow detection unit being used to detect a second cumulative water flow passing through the first water purification unit, the second water purification unit and the third water purification unit; The control module is also used for: In the process of controlling the first heating module and the valve assembly, determining the status information of the first water purification unit, the second water purification unit and the third water purification unit; Obtaining the first accumulated water flow and the second accumulated water flow; The first water purification unit, the second water purification unit, and the third water purification unit are detected according to the state information, the first cumulative water flow rate, and the second cumulative water flow rate.

6. The water supply system according to claim 5, It is characterized in that The control module is also used for: When the state information includes that the first water purification unit is in use and the second water purification unit and the third water purification unit are both in unused states, determining a water flow sum value between the first cumulative water flow and the second cumulative water flow; When the water flow and value is greater than or equal to a first preset threshold, a second prompt event corresponding to the first water purification unit is triggered.

7. The water supply system according to claim 5, It is characterized in that The control module is also used for: When the state information includes that the first water purification unit, the second water purification unit, and the third water purification unit are all in use, determining a water flow sum value between the first cumulative water flow and the second cumulative water flow; When the water flow and value are greater than or equal to a first preset threshold, triggering a second prompt event corresponding to the first water purification unit; When the second accumulated water flow rate is greater than a second preset threshold, a third prompt event corresponding to the second water purification unit and a fourth prompt event corresponding to the third water purification unit are triggered.

8. The water supply system according to claim 1, It is characterized in that The water supply system further comprises: a second heating module connected to the control module, the output end of the water purification module is also connected to the input end of the second heating module, and the output end of the second heating module is connected to the second water outlet; The control module is also used for: When the water supply mode instruction is obtained, the first heating module, the second heating module and the valve assembly are controlled.

9. The water supply system according to claim 8, It is characterized in that The input end of the second heating module is provided with a second temperature sensor, and the output end of the second heating module is provided with a third temperature sensor, the second temperature sensor and the third temperature sensor are both connected to the control module, the second temperature sensor is used to detect the water inlet temperature of the second heating module, and the third temperature sensor is used to detect the water outlet temperature of the second heating module; The control module is also used for: When the water supply mode instruction for instructing to start the drinking water purification function is obtained, determining whether the water supply system is in another water supply mode; When the water supply system is not in other water supply modes, obtaining a target purified water temperature, controlling the first valve, the second valve and the first heating module to be closed, and controlling the third valve and the second heating module to be opened, so that the water flowing in from the water inlet is purified by the water purification module and then flows into the second heating module; When the purified water flows into the second heating module, obtaining the water inlet temperature of the second heating module; Determining a target power of the second heating module according to the target purified water temperature and the water inlet temperature of the second heating module; controlling the second heating module to operate according to the target power; When the second heating module operates according to the target power, obtaining the outlet water temperature of the second heating module; The target power is updated according to the outlet water temperature of the second heating module and the target purified water temperature, so that the second heating module operates according to the updated target power until the outlet water temperature of the second heating module reaches the target purified water temperature.

10. A gas water heater, It is characterized in that Comprising the water supply system according to any one of claims 1 to 9.

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