Water equipment, waterway system and control method

Abstract

The invention relates to water equipment, a waterway system and a control method. The equipment comprises a water heater, a water purifier and a heat exchanger. The water heater comprises a water heater water inlet pipe, a water heater water outlet pipe and a heating unit connected with the water heater water inlet pipe and the water heater water outlet pipe. The water purifier comprises a water purifier water inlet pipe, a water purifier water outlet pipe and a filtering unit connected with the water purifier water inlet pipe and the water purifier water outlet pipe. The heat exchanger is arranged on a water heater water outlet pipe and a water purifier water outlet pipe and comprises a first heat exchange pipe and a second heat exchange pipe, the water heater water outlet pipe is connected with the first heat exchange pipe, and the water purifier water outlet pipe is connected with the second heat exchange pipe. And water in the first heat exchange tube and water in the second heat exchange tube can exchange heat. The water equipment integrates the bathing function and the water drinking function, the space utilization rate is increased, the electricity consumption is reduced, and the cost is saved.

Description

Technical Field

[0001] The present application relates to the field of household appliance technology, and more specifically, to a water device, a water system and a control method. Background Art

[0002] At present, the trend of integration in the kitchen appliance market is becoming more and more obvious. For example, dishwashers integrate washing, drying, disinfection and storage functions, integrated stoves integrate steamers, ovens, cookers and range hoods, integrated sinks integrate dishwashers and sinks, and microwave ovens integrate microwave ovens, steamers and ovens.

[0003] Gas water heaters and water purifiers belong to mature home appliance categories. Gas water heaters use gas (generally natural gas) as fuel, and control the ratio of air and gas to carry out combustion reaction. The heat generated by combustion passes through the heat exchanger to heat the water, thereby preparing hot water. A water purifier is a device for water purification, filtering out impurities, ions, and possible harmful components such as hormones and pesticides in the water, thereby meeting the user's demand for healthy drinking water. At present, there is no integrated design of gas water heaters and water purifiers in the home appliance industry. Summary of the invention

[0004] The present application provides a water device, a water system and a control method, which can realize the integration of a water heater and a water purifier.

[0005] A water device, comprising:

[0006] A gas water heater, comprising a water inlet pipe of the water heater, a water outlet pipe of the water heater and a heating unit connecting the water inlet pipe of the water heater and the water outlet pipe of the water heater;

[0007] A water purifier, comprising a water inlet pipe of the water purifier, a water outlet pipe of the water purifier, and a filtering unit connecting the water inlet pipe of the water purifier and the water outlet pipe of the water purifier; and

[0008] The heat exchanger is arranged on the water outlet pipe of the water heater and the water outlet pipe of the water purifier. The heat exchanger includes a first heat exchange tube and a second heat exchange tube. The water outlet pipe of the water heater is connected to the first heat exchange tube, and the water outlet pipe of the water purifier is connected to the second heat exchange tube. The water in the first heat exchange tube can exchange heat with the water in the second heat exchange tube.

[0009] Preferably, the gas water heater also includes a water inlet valve for connecting or cutting off the water inlet pipe of the water heater, a water outlet valve for connecting or cutting off the water outlet pipe of the water heater, and a water pump, the water pump includes a water inlet end and a water outlet end, the water inlet end is connected to the water inlet valve, the water outlet end is connected to the heating unit, the water outlet valve is arranged on the water outlet pipe of the water heater and is located downstream of the heat exchanger, the gas water heater can be controlled to be in an internal circulation state, in the internal circulation state, the water inlet valve is connected to the water outlet valve, the water outlet pipe of the water heater, the water inlet pipe of the water heater, the heating unit, and the heat exchanger form a connected loop, and the water pump can make water circulate in the loop, and the heating unit can heat the water in the loop.

[0010] Preferably, the water inlet valve and the water outlet valve are arranged as an integrated structure.

[0011] Preferably, the water device further comprises a controller, and the controller is used for:

[0012] Responding to a water purification heating instruction input by a user;

[0013] Controlling the gas water heater to be in the internal circulation state, controlling the water pump and the heating unit to operate, so that water in the circuit is heated by the heating unit and circulates in the circuit through the water pump;

[0014] The water in the water inlet pipe of the water purifier is controlled to enter the second heat exchange tube, so that the heat of the hot water in the first heat exchange tube is transferred to the purified water in the second heat exchange tube.

[0015] Preferably, the controller is also used for:

[0016] The water temperature of the purified water in the water outlet pipe of the water purifier downstream of the heat exchanger is obtained, and when the water temperature does not reach the target purified water temperature set in the purified water heating instruction, the heating unit is controlled to increase the combustion load.

[0017] Preferably, the water equipment further comprises an electric heater arranged on the water outlet pipe of the water purifier and located downstream of the heat exchanger, and the controller is further used for:

[0018] After the combustion load is increased, if the water temperature still does not reach the target purified water temperature, the electric heater is controlled to heat.

[0019] Preferably, the heating unit comprises a combustion chamber and a water storage chamber, the combustion chamber and the water storage chamber are separated by a heat conducting member, and the water storage chamber is connected to the water inlet pipe of the water heater and the water outlet pipe of the water heater; and / or

[0020] The heating unit further comprises a gas inlet pipe, a gas valve and a fan. The gas inlet pipe is connected to the combustion chamber via the gas valve. The fan is also connected to the combustion chamber via the gas valve. The opening of the gas valve is adjustable.

[0021] Preferably, the water purifier further comprises an electric heater, which is arranged on a water outlet pipe of the water purifier and located downstream of the heat exchanger.

[0022] Preferably, the filter unit comprises a primary filter element and a secondary filter element, and the primary filter element and the secondary filter element are arranged in sequence according to the flow direction of the water flow.

[0023] Preferably, the primary filter element includes a composite filter element, and the secondary filter element includes a reverse osmosis filter element.

[0024] A waterway system, comprising:

[0025] Bathing pipes, including cold water pipes and hot water pipes;

[0026] Clean water pipelines; and

[0027] As described above, the water equipment, the hot water pipe is connected to the water outlet pipe of the water heater, the cold water pipe is used to introduce cold water, and the purified water pipeline is connected to the water outlet pipe of the water purifier.

[0028] Preferably, the bathing pipeline further comprises a one-way valve connecting the cold water pipe and the hot water pipe, wherein the hot water pipe is unidirectionally connected to the cold water pipe through the one-way valve to form a one-way closed circulation loop connected to the heating unit.

[0029] A control method for the water equipment described in any one of the above, the control method comprising:

[0030] Respond to user input;

[0031] Control the operation of gas water heater and / or water purifier.

[0032] Preferably, the instruction is a purified water heating instruction, and the control method comprises:

[0033] Control the water outlet pipe of the water heater downstream of the heat exchanger to be connected with the water inlet pipe of the water heater, so as to form a loop of water outlet pipe of the water heater → water inlet pipe of the water heater → water pump → heating unit → heat exchanger;

[0034] Controlling the operation of the heating unit and the water pump so that the water is heated in the loop and circulates through the first heat exchange tube;

[0035] The purified water in the water purifier is controlled to enter the second heat exchange tube of the heat exchanger, so that the heat of the hot water in the first heat exchange tube is transferred to the purified water in the second heat exchange tube.

[0036] Preferably, the control method further includes:

[0037] Obtaining the current water temperature of purified water in the water outlet pipe of the water purifier downstream of the heat exchanger;

[0038] It is determined that the current water temperature has not reached the target purified water temperature, and the heating unit is controlled to increase the combustion load. After the combustion load is increased, if the water temperature still has not reached the target purified water temperature, the electric heater arranged on the water outlet pipe of the water purifier and located downstream of the heat exchanger is controlled to heat.

[0039] Preferably, the instruction further includes a bathing instruction, and when a bathing instruction input by a user is received during the execution of the water purification and heating instruction, the control method includes:

[0040] It is determined whether the water temperature of the purified water in the outlet pipe of the water purifier downstream of the heat exchanger reaches the target temperature of purified water. If the target temperature of purified water is not reached, the bathing instruction is not responded.

[0041] Preferably, the instructions include a bathing instruction and a purified water heating instruction, and the bathing instruction precedes the purified water heating instruction. The control method includes:

[0042] The heating unit is controlled to increase the combustion load according to the flow rate of the purified water, the temperature of the purified water in the water inlet pipe of the water purifier, and the target temperature of the purified water to be achieved after the purified water is heated.

[0043] Preferably, the control method further includes:

[0044] Obtaining the water temperature of purified water in the water outlet pipe of the water purifier downstream of the heat exchanger;

[0045] If the temperature of the purified water does not reach the target purified water temperature, obtain the first water temperature on the water inlet side and the second water temperature on the water outlet side of the electric heater arranged on the purified water outlet pipe and located downstream of the heat exchanger, control the heating of the electric heater according to the first water temperature, the second water temperature and the target purified water temperature, and adjust the combustion load of the heating unit.

[0046] Preferably, when the instruction is an instruction for drinking purified water at room temperature, the control method includes:

[0047] Control the purified water in the water purifier to enter the second heat exchange tube of the heat exchanger, and control the water outlet pipe of the water purifier downstream of the heat exchanger to discharge water.

[0048] Preferably, the instructions further include bathing instructions, and the control method includes:

[0049] The gas water heater is controlled to work so that the hot water in the gas water heater enters the first heat exchange tube of the heat exchanger. When the hot water in the outlet pipe of the water heater downstream of the heat exchanger reaches the target water temperature for bathing, the outlet pipe of the water heater is controlled to discharge water. The present application provides a water device, a water system and a control method, wherein the water device integrates bathing and drinking functions in one, thereby improving space utilization. Moreover, through the heat exchange function of the heat exchanger, the heat in the gas water heater can also be transferred to the purified water during the purified water heating process, thereby reducing power consumption and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 is a schematic diagram of the interior of a water device shown in an exemplary embodiment of the present application;

[0051] Figure 2 is a schematic diagram of a waterway system shown in an exemplary embodiment of the present application;

[0052] Figure 3 is a flow chart of a method for controlling a water device shown in an exemplary embodiment of the present application;

[0053] Figure 4 It is another flow chart of a method for controlling a water device shown in an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0054] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are only examples of devices and methods consistent with some aspects of the present application.

[0055] The terms used in this application are only for the purpose of describing specific embodiments, and are not intended to limit this application. Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, similar words such as "one" or "one" do not indicate quantity restrictions, but indicate that there is at least one, and will be separately described if only "one" is referred to. "Multiple" or "several" means two or more. Unless otherwise specified, similar words such as "front", "rear", "lower" and / or "upper", "top", "bottom" are only for the convenience of explanation, and are not limited to one position or one spatial orientation. Similar words such as "include" or "comprise" mean that the elements or objects appearing in front of "include" or "comprise" cover the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. The words "connected" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0056] Please refer to Figure 1 , Figure 1 A schematic diagram of a water device 100 is shown as an exemplary embodiment of the present application.

[0057] The present application provides a water device 100, which includes a housing 10, a gas water heater 20 and a water purifier 30 encapsulated inside the housing 10. The water device 100 integrates bathing function and drinking water function, improves space utilization, reduces power consumption, and saves costs.

[0058] The gas water heater 20 includes a water heater inlet pipe 21, a water heater outlet pipe 22, and a heating unit 23 connecting the water heater inlet pipe 21 and the water heater outlet pipe 22. The water heater inlet pipe 21 is used to connect a cold water pipe, for example, it can be connected to the main waterway in the user's room. Cold water is delivered to the heating unit 23 via the water heater inlet pipe 21, for example, a water pump can be used to provide water circulation power to deliver water to the heating unit 23. The heating unit 23 is used to heat the cold water, and the heated water can flow out via the water heater outlet pipe 22. The gas water heater 20 can realize a bathing function for the user to wash.

[0059] The water purifier 30 includes a water purifier inlet pipe 31, a water purifier outlet pipe 32, and a filter unit 33 connecting the water purifier inlet pipe 31 and the water purifier outlet pipe 32. The water purifier inlet pipe 31 is used to connect a cold water pipe, for example, it can be connected to the main waterway in the user's room. Cold water is delivered to the filter unit 33 via the water purifier inlet pipe 31, for example, a water pump can be used to provide water circulation power to deliver water to the filter unit 33. The filter unit 33 is used to filter water, and the filtered clean water can flow out via the water purifier outlet pipe 32. The water purifier 30 can realize the water purification function for users to drink.

[0060] The water equipment 100 also includes a heat exchanger 40, which is arranged on the water heater outlet pipe 22 and the water purifier outlet pipe 32. The heat exchanger 40 includes a heat exchanger shell and a first heat exchange tube and a second heat exchange tube arranged in the heat exchanger shell. The water heater outlet pipe 22 is connected to the first heat exchange tube, and the water purifier outlet pipe 32 is connected to the second heat exchange tube, wherein the water heater outlet pipe 22 includes two parts, namely, a pipeline located upstream of the heat exchanger 40 and a pipeline located downstream of the heat exchanger 40. Similarly, the water purifier outlet pipe 32 includes two parts, namely, a pipeline located upstream of the heat exchanger 40 and a pipeline located downstream of the heat exchanger 40. The water in the first heat exchange tube can exchange heat with the water in the second heat exchange tube. The heat exchanger 40 includes but is not limited to a plate heat exchanger.

[0061] According to the above description, the gas water heater 20 and the water purifier 30 are integrated together through the heat exchanger 40. For example, during the purified water heating process, the heat in the gas water heater 20 can be transferred to the purified water through the heat exchanger 40, which not only meets the user's requirements for the purified water temperature, but also saves electrical energy.

[0062] In one embodiment, the gas water heater 20 further includes a water inlet valve 24 for connecting or shutting off the water inlet pipe 21 of the water heater, a water outlet valve 26 for connecting or shutting off the water outlet pipe 22 of the water heater, and a water pump 25. The water outlet valve 26 is arranged on the water outlet pipe 22 of the water heater and is located on the pipeline downstream of the heat exchanger 40. The water inlet valve 24 and the water outlet valve 26 can be used to switch the water path. The opening of the water inlet valve 24 and the water outlet valve 26 are adjustable. The water pump 25 is located downstream of the water inlet valve 24 and is used to transport water so that the water flows in a directional manner. The water pump 25 includes a water inlet end and a water outlet end. The water inlet end is connected to the water inlet valve 24, and the water outlet end is connected to the heating unit 23. The water pump 25 can make water flow from the water inlet pipe 21 of the water heater into the heating unit 23.

[0063] The gas water heater 20 can be controlled to be in a closed internal circulation state. In the internal circulation state, the water inlet valve 24 is connected to the water outlet valve 26, and the water heater outlet pipe 22, the water heater inlet pipe 21, the heating unit 23, and the heat exchanger 40 form a connected loop 27. Figure 1 The double-dashed line in FIG. 2 shows the flow path of the circuit 27 , and the arrow shows the flow direction of water in the circuit 27 .

[0064] The water pump 25 can circulate the water in the loop 27, and the heating unit 23 can heat the water in the loop 27. That is, in the internal circulation state, the water inlet pipe 21 of the water heater does not flow in, and the water outlet pipe 22 of the water heater does not flow out of water. The water pump 25 and the heating unit 23 are in operation. The water pump 25 can circulate the water in the closed loop 27, and the heating unit 23 can heat the water in the loop 27. Among them, the loop is: outlet valve 26 → inlet valve 24 → water heater inlet pipe 21 → water pump 25 → heating unit 23 → water heater outlet pipe 22 → outlet valve 26. At this time, the water equipment 100 is in a separate drinking water mode and cannot be used for bathing. This solution can be applied in the clean water heating mode, using the heating unit 23 to heat the water in the loop 27, so that the hot water circulates into the first heat exchange tube, and then can be heat-exchanged with the clean water in the second heat exchange tube to heat the clean water, thereby avoiding or reducing power consumption and saving electric energy.

[0065] The water inlet valve 24 and the water outlet valve 26 can also respectively connect the water heater inlet pipe 21 and the water heater outlet pipe 22. At this time, cold water can enter the heating unit 23 through the water heater inlet pipe 21, and the cold water can flow out through the water heater outlet pipe 22 after being heated to a preset temperature. At this time, the water device 100 is in a bathing mode. In addition, the gas water heater 20 can adjust the combustion load according to the target temperature set by the user when bathing.

[0066] In one embodiment, the water inlet valve 24 and the water outlet valve 26 can be set as an integrated structure. That is, the water inlet valve 24 and the water outlet valve 26 are a combined valve with an integrated structure, and the two valve cores of the combined valve are respectively used to connect or cut off the water heater inlet pipe 21 and the water heater outlet pipe 22. The integrated structure of the combined valve can reduce the number of valves and improve the compactness of the structure.

[0067] In one embodiment, the heating unit 23 includes a combustion chamber 231 and a water storage chamber 232, wherein the combustion chamber 231 is separated from the water storage chamber 232 by a heat conductor 233, and the heat conductor 233 is formed as the bottom wall of the water storage chamber 232, for example, the heat conductor 233 can be made of a metal material. The combustion chamber 231 is used for gas combustion, and the water storage chamber 232 is used for storing water. The heat generated by the combustion of the gas in the combustion chamber 231 is transferred to the water in the water storage chamber 232 through the heat conductor 233. Gas heats quickly, has a low price, and is highly efficient, and can save time in the bathing mode. Gas includes but is not limited to coal gas or natural gas.

[0068] In one embodiment, the heating unit 23 further includes a gas inlet pipe 234, a gas valve 235 and a fan 236. The gas inlet pipe 234 is connected to the combustion chamber 231 through the gas valve 235, and the air outlet end of the fan 236 is also connected to the combustion chamber 231 through the gas valve 235. The gas valve 235 can connect or cut off the gas inlet pipe 234, and the fan 236 can deliver air to the combustion chamber 231. The opening of the gas valve 235 is adjustable, and the amount of gas involved in the combustion can be adjusted by adjusting the opening of the gas valve 235.

[0069] The housing 10 is further provided with an exhaust gas outlet 237, which is in communication with the combustion chamber 231 and is used to discharge the exhaust gas generated after combustion. The exhaust gas outlet 237 can be connected to the combustion chamber 231 through an exhaust gas pipe.

[0070] Please continue to refer to Figure 1 In one embodiment, the water purifier 30 further includes an electric heater 34, which is disposed on the water outlet pipe 32 of the water purifier and is located downstream of the heat exchanger 40. In this configuration, the electric heater 34 can also be used to assist in heating the water in the purified water outlet pipe 32. For example, the purified water is heated to 100°C according to the user's setting. At this time, the combustion chamber 231 and the electric heater 34 can be used for heating at the same time to avoid overloading the gas water heater 20 and reduce the requirements for the electric heater 34.

[0071] In one embodiment, the filter unit 33 includes a primary filter element 331 and a secondary filter element 332, and the primary filter element 331 and the secondary filter element 332 are arranged in sequence according to the flow direction of the water flow. In this way, the water entering the filter unit 33 through the water purifier inlet pipe 31 can be filtered through at least two stages to improve the cleanliness of the water. In a specific embodiment, the primary filter element 331 is provided to include a composite filter element, and the secondary filter element 332 includes a reverse osmosis filter element. The composite filter element can be a two-in-one composite filter element of PP cotton and activated carbon, but is not limited to this.

[0072] The water purifier 30 further includes a wastewater outlet 35 , which is in communication with the wastewater cavity of the filter unit 33 and is used to discharge wastewater generated after filtration.

[0073] In one embodiment, the water purifier 30 further includes a second water pump 36 connected to the water purifier water inlet pipe 31, and the second water pump 36 is used to output water to the filtering unit 33, and the water purifier water inlet pipe 31 is connected to the water heater water inlet pipe 21. In this way, the water heater water inlet pipe 21 and the water purifier water inlet pipe 31 are connected in parallel, which can save pipelines. Specifically, the water purifier water inlet pipe 31 is connected to the water heater water inlet pipe 21 on the water inlet side of the water valve 24.

[0074] In one embodiment, the device 100 further includes a controller 50, which is used to receive a control instruction input by a user and control the working mode of the water device 100 according to the control instruction. For example, the water heater 20 can work alone, and the water device 100 is in a bathing mode. For another example, the water purifier 30 can work alone, and the water device 100 is in a drinking water mode, but it is not limited thereto.

[0075] In one embodiment, the controller 50 is used to:

[0076] Responding to a water purification heating instruction input by a user;

[0077] The gas water heater 20 is controlled to be in the internal circulation state, and the water pump 25 and the heating unit 23 are controlled to operate, so that the water in the loop is heated by the heating unit 23 and circulates in the loop 27 through the water pump 25; and the water in the water inlet pipe 31 of the water purifier is controlled to enter the second heat exchange tube, so that the heat of the hot water in the first heat exchange tube is transferred to the purified water in the second heat exchange tube. In this way, when the controller 50 receives the purified water heating instruction, the controller 50 controls the gas water heater 20 to be in the internal circulation state, and a closed loop 27 is formed in the gas water heater 20. The water in the loop 27 can be heated by the heating unit 23 and then enter the first heat exchange tube through the water pump 25, and transfer heat to the purified water in the second heat exchange tube, so that the purified water is heated, thereby reducing electricity consumption.

[0078] In one embodiment, the controller 50 is further configured to:

[0079] The water temperature of the purified water in the water outlet pipe 32 of the water purifier downstream of the heat exchanger 40 is obtained, and when the water temperature does not reach the target purified water temperature set in the purified water heating instruction, the heating unit 23 is controlled to increase the combustion load. The combustion load of the heating unit 23 can be preset, and the set value can be less than the maximum combustion load.

[0080] In one embodiment, the controller 50 is further configured to:

[0081] After the combustion load is increased, if the water temperature still does not reach the target purified water temperature, the electric heater 34 is controlled to heat, thereby avoiding overload combustion of the gas water heater 20 .

[0082] In addition, a first flow meter is provided on the water inlet side or the water outlet side of the water pump 25, and the first flow meter is electrically connected to the controller 50. When water flows through, the first flow meter sends a flow signal to the controller 50, and when the ignition threshold is reached, the gas water heater 20 starts.

[0083] A first temperature sensor is provided on the water inlet pipe 21 of the water heater, and is used to detect the temperature of cold water in the water inlet pipe 21 of the water heater. A second sensor is provided on the water outlet pipe 22 of the water heater located downstream of the heat exchanger 40, and is used to detect the temperature of hot water in the water outlet pipe 22 of the water heater. The first temperature sensor and the second temperature sensor are electrically connected to the controller 50, and output temperature signals to the controller 50. The controller 50 controls the combustion load of the heating unit 23 according to the temperature of cold water in the water inlet pipe 21 of the water heater detected by the first temperature sensor, the flow signal of the flow meter, the heat exchange efficiency of the heat exchanger 40, the temperature of hot water in the water outlet pipe 22 of the water heater detected by the second temperature sensor, and the target temperature set during bathing.

[0084] A second flow meter is provided on the water inlet side or the water outlet side of the second water pump 36 of the water purifier 30, and the second flow meter is electrically connected to the controller 50 for monitoring the purified water flow rate. A third temperature sensor and a fourth temperature sensor are provided on the water inlet side and the water outlet side of the electric heater 34, respectively, and the third temperature sensor and the fourth temperature sensor are electrically connected to the controller 50. The controller 50 controls the combustion load of the heating unit 23 and the heating power of the electric heater 34 according to the flow signal of the second flow meter, the temperature signal detected by the third temperature sensor, the temperature signal detected by the fourth temperature sensor, and the target temperature of purified water heating. Please refer to Figure 2 , Figure 2 A schematic diagram of a waterway system 200 is shown according to an exemplary embodiment of the present application.

[0085] The present application provides a water system 200, which includes a bathing pipeline 210, a water purification pipeline 220 and a water device 100. The bathing pipeline 210 includes a cold water pipe 2100 and a hot water pipe 2102. The cold water pipe 2100 is used to pass cold water and can be connected to the main waterway 300 in the user's room. The hot water pipe 2102 is connected to the water outlet pipe 22 of the water heater. The water purification pipeline 220 is connected to the water outlet pipe 32 of the water purifier. The water system 200 can provide bathing water and drinking purified water, integrate bathing and water purification, improve space utilization, and reduce costs.

[0086] In one embodiment, the bathing pipeline 210 may be provided with multiple water points, each of which may be provided with a nozzle 211, a shower head 212, etc. The water purification pipeline 220 may also be provided with multiple water points, each of which may be provided with a faucet 221. The water purification pipeline 220 may also include a waste water pipeline 230, one end of which is connected to the waste water port 35 of the water purifier 30, and the other end of which is connected to the drain tank 240.

[0087] In one embodiment, the bathing pipeline 210 further includes a one-way valve 2104 connecting the cold water pipe 2100 and the hot water pipe 2102. The hot water pipe 2102 is unidirectionally connected to the cold water pipe 2100 through the one-way valve 2104, forming a one-way closed circulation loop connected to the heating unit 23. The one-way closed circulation loop is: hot water pipe 2102→one-way valve 2104→cold water pipe 2100→water heater water inlet pipe 21→water pump 25→heating unit 23→water heater water outlet pipe 22→water outlet valve 26→hot water pipe 2102. With such an arrangement, water can be circulated and heated by the heating unit 23 during the process of water delivery by the water pump 25, so that the bathing water can be heated immediately after it is turned on, and the purified water can also be heated at any time through heat exchange.

[0088] Please continue to refer to Figure 2 In one embodiment, the device 100 may further include a second housing 11 disposed below the housing 10 and detachably connected to the housing 10. The first function of the second housing 11 is to facilitate replacement of the filter element in the water purification unit 33. The second function of the second housing 11 is to place a water container when using its optional water purification faucet 400 to receive water. The third function of the second housing 11 is to cover the joints and other components of the device 100 connected to the bathing pipeline 210 and the water purification pipeline 220, so as to achieve aesthetic effect. The water purification faucet 400 can be disposed on a branch line led out from the water purification outlet pipe 32.

[0089] Please refer to Figure 3 , Figure 3 The present invention is a flowchart of a method for controlling a water device according to an exemplary embodiment of the present invention.

[0090] The present application provides a control method for a water device, which is applied to the water device 100 described above. The control method includes step S10 and step S20.

[0091] Step S10, responding to the instruction input by the user.

[0092] In step S10, the user can input instructions to the water device through the control panel of the water device. For example, the control panel can be set with instruction identifiers such as bathing, drinking water, water temperature, etc.

[0093] Step S20, controlling the water heater and / or the water purifier to operate.

[0094] In this step, one of the water heater 20 and the water purifier 30 may be controlled to work alone, or the water heater 20 and the water purifier 30 may be controlled to work simultaneously.

[0095] By adopting this control method, the bathing function and drinking water function of the water device 100 can be controlled. For example, during the purified water heating process, the heat of the hot water in the gas water heater 20 can be transferred to the purified water in the water purifier 30 through the heat exchanger 40, saving electric energy.

[0096] Please refer to Figure 4 , Figure 4 The present invention is a flowchart of a method for controlling a water device according to an exemplary embodiment of the present invention.

[0097] In one embodiment, when the instruction input by the user is a purified water heating instruction, the control method includes step S11, step S12 and step 13.

[0098] Step S11, controlling the water outlet pipe 22 downstream of the heat exchanger 40 to be connected to the water inlet pipe 21 of the water heater, thereby forming a loop 27 of the water outlet pipe 22 → the water inlet pipe 21 → the water pump 25 → the heating unit 23 → the heat exchanger 40 → the water outlet pipe 22 of the water heater.

[0099] Step S12, controlling the heating unit 23 and the water pump 25 to operate, so that the water is heated in the loop 27 and circulates through the first heat exchange tube.

[0100] Step S13, controlling the purified water in the water purifier 30 to enter the second heat exchange tube of the heat exchanger 40, so that the heat of the hot water in the first heat exchange tube is transferred to the purified water in the second heat exchange tube.

[0101] In this control method, when receiving a purified water heating instruction input by the user, the controller 50 controls the gas water heater 20 to form a closed loop 27. The water in the loop 27 is heated by the heating unit 23 and circulates into the first heat exchange tube through the water pump 25, and exchanges heat with the purified water in the second heat exchange tube, so that the water temperature of the purified water rises. This can reduce power consumption and save electricity.

[0102] In one embodiment, the control method further includes:

[0103] Obtaining the current water temperature of the purified water in the water outlet pipe 32 of the water purifier downstream of the heat exchanger 40;

[0104] Determine whether the current water temperature reaches the target purified water temperature. If it does not reach the target purified water temperature, control the heating unit to increase the combustion load. After increasing the combustion load, if the current water temperature still does not reach the target purified water temperature, control the electric heater 34 disposed on the water outlet pipe 32 of the water purifier and located downstream of the heat exchanger 40 to heat it.

[0105] In this control method, the heat transferred from the gas water heater 20 is preferentially used to heat the purified water. If the target purified water temperature still cannot be reached after increasing the combustion load, the electric heater 34 is used for heating. This can save electric energy and avoid overloading the gas water heater 20.

[0106] In one embodiment, the instructions further include a bathing instruction, and when a bathing instruction input by a user is received during the execution of the water purification heating instruction, the control method includes:

[0107] It is determined whether the temperature of the purified water in the water outlet pipe 32 of the water purifier downstream of the heat exchanger reaches the target temperature of purified water. If it does not reach the target temperature of purified water, the bathing instruction is not responded. That is to say, in the process of executing the purified water heating instruction, since a closed loop 27 is formed inside the gas water heater 20, at this time, the water device 100 is in a drinking water mode alone, without a bathing mode. Only when the temperature of the purified water reaches the target temperature of purified water, the controller starts to respond to the bathing instruction.

[0108] In one embodiment, the instruction includes a bathing instruction and a clean water heating instruction, and the bathing instruction precedes the clean water heating instruction. The control method includes:

[0109] The heating unit 23 is controlled to increase the combustion load according to the flow rate of purified water, the temperature of purified water in the water purifier inlet pipe 31, and the target temperature of purified water to be reached after the purified water is heated. At this time, the combustion load of the heating unit 23 can be less than the maximum load of the heating unit 23 to avoid overloading of the heating unit 23.

[0110] In one embodiment, the control method further includes:

[0111] Obtaining the water temperature of purified water in the water outlet pipe 32 of the water purifier downstream of the heat exchanger 40;

[0112] If the temperature of the purified water does not reach the target purified water temperature, the first water temperature on the water inlet side and the second water temperature on the water outlet side of the electric heater 34 disposed on the purified water outlet pipe 32 and located downstream of the heat exchanger 40 are obtained, and the electric heater 34 is controlled to heat according to the first water temperature, the second water temperature, and the purified water target water temperature, and the combustion load of the heating unit 23 is adjusted. In other words, the electric heater 34 can be used for auxiliary heating, for example, to heat the purified water to nearly 100°C. Using the electric heater 34 for heating can ensure that the heating unit 23 will not burn overloaded, and also reduce the requirements for the electric heater 34 during the purified water heating process.

[0113] In one embodiment, when the instruction is an instruction for drinking purified water at room temperature, the control method includes:

[0114] The purified water in the water purifier 30 is controlled to enter the second heat exchange tube of the heat exchanger 40, and the water outlet pipe 32 of the water purifier downstream of the heat exchanger 40 is controlled to discharge water. When only drinking normal temperature purified water, no heat exchange is required, and the gas water heater 20 may not work.

[0115] In one embodiment, when the instruction further includes a bathing instruction, the control method includes:

[0116] The gas water heater 20 is controlled to work so that the hot water in the gas water heater 20 enters the first heat exchange tube of the heat exchanger 40. When the hot water in the outlet pipe 22 of the water heater downstream of the heat exchanger 40 reaches the target water temperature for bathing, the outlet pipe 22 of the water heater is controlled to discharge water. When using normal temperature purified water and bathing, the controller 50 controls the gas water heater 20 to execute the bathing instruction and controls the water purifier 30 to execute the respective normal temperature purified water instructions. Among them, the controller 50 can control the combustion load of the heating unit 23 according to the temperature of the cold water in the water inlet pipe 21 of the water heater, the flow signal of the flow meter on the water inlet side of the water pump 25, the heat exchange efficiency of the heat exchanger 40, the temperature of the hot water in the outlet pipe 22 of the water heater, and the target temperature set during bathing. The bathing instruction can be before or after the normal temperature purified water instruction for drinking.

[0117] When bathing alone, the gas water heater 20 is controlled to work alone, and when the target water temperature for bathing is reached, the water outlet pipe 22 of the water heater is controlled to discharge water.

[0118] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A water device, characterized in that: include: A gas water heater (20), comprising a water heater water inlet pipe (21), a water heater water outlet pipe (22), and a heating unit (23) connecting the water heater water inlet pipe (21) and the water heater water outlet pipe (22); A water purifier (30), comprising a water purifier water inlet pipe (31), a water purifier water outlet pipe (32), and a filtering unit (33) connecting the water purifier water inlet pipe (31) and the water purifier water outlet pipe (32); and A heat exchanger (40) is arranged on the water outlet pipe (22) of the water heater and the water outlet pipe (32) of the water purifier. The heat exchanger (40) comprises a first heat exchange pipe and a second heat exchange pipe. The water outlet pipe (22) of the water heater is connected to the first heat exchange pipe, and the water outlet pipe (32) of the water purifier is connected to the second heat exchange pipe. Water in the first heat exchange pipe can exchange heat with water in the second heat exchange pipe.

2. The water equipment according to claim 1, characterized in that: The gas water heater (20) further comprises a water inlet valve (24) for connecting or shutting off the water inlet pipe (21) of the water heater, a water outlet valve (26) for connecting or shutting off the water outlet pipe (22) of the water heater, and a water pump (25). The water pump (25) comprises a water inlet end and a water outlet end. The water inlet end is connected to the water inlet valve, and the water outlet end is connected to the heating unit (23). The water outlet valve is arranged on the water outlet pipe (22) of the water heater and is located downstream of the heat exchanger (40). The gas water heater (20) can be controlled to be in an internal circulation state. In the internal circulation state, the water inlet valve is connected to the water outlet valve. The water outlet pipe (22) of the water heater, the water inlet pipe (21) of the water heater, the heating unit (23), and the heat exchanger form a connected loop (27). The water pump (25) can make water circulate in the loop (27), and the heating unit (23) can heat the water in the loop (27).

3. The water equipment according to claim 2, characterized in that: The water inlet valve (24) and the water outlet valve (26) are arranged as an integrated structure.

4. The water equipment according to claim 2, characterized in that: The water device (100) further comprises a controller (50), wherein the controller (50) is used to: Responding to a water purification heating instruction input by a user; Controlling the gas water heater (20) to be in the internal circulation state, controlling the water pump (25) and the heating unit (23) to operate, so that water in the circuit (27) is heated by the heating unit (23) and circulates in the circuit (27) through the water pump (25); The water in the water inlet pipe (31) of the water purifier is controlled to enter the second heat exchange tube, so that the heat of the hot water in the first heat exchange tube is transferred to the purified water in the second heat exchange tube.

5. The water device according to claim 4, characterized in that: The controller (50) is also used for: The water temperature of purified water in the water outlet pipe (32) of the water purifier downstream of the heat exchanger (40) is obtained, and when the water temperature does not reach the target purified water temperature set in the purified water heating instruction, the heating unit (23) is controlled to increase the combustion load.

6. The water device according to claim 5, characterized in that The water device (100) further comprises an electric heater (34) arranged on the water outlet pipe (32) of the water purifier and located downstream of the heat exchanger (40), and the controller (50) is further used for: After the combustion load is increased, if the water temperature still does not reach the target purified water temperature, the electric heater (34) is controlled to heat.

7. The water equipment according to claim 1, characterized in that The heating unit (23) comprises a combustion chamber (231) and a water storage chamber (232), the combustion chamber (231) and the water storage chamber (232) are separated by a heat conducting member (233), and the water storage chamber (232) is connected to the water inlet pipe (21) and the water outlet pipe (22) of the water heater; and / or The heating unit (23) further comprises a gas intake pipe (234), a gas valve (235) and a fan (236); the gas intake pipe (234) is connected to the combustion chamber (231) via the gas valve (235); the fan (236) is also connected to the combustion chamber (231) via the gas valve (235); and the opening of the gas valve (235) is adjustable.

8. The water equipment according to any one of claims 1 to 7, characterized in that: The water purifier (30) further comprises an electric heater (34), which is arranged on the water outlet pipe (32) of the water purifier and is located downstream of the heat exchanger.

9. The water equipment according to any one of claims 1 to 7, characterized in that: The filter unit (33) comprises a primary filter element (331) and a secondary filter element (332), and the primary filter element (331) and the secondary filter element (332) are arranged in sequence according to the flow direction of the water flow.

10. The water device according to claim 9, characterized in that The primary filter element (331) includes a composite filter element, and the secondary filter element (332) includes a reverse osmosis filter element.

11. A waterway system, characterized in that: include: A bathing pipeline (210), including a cold water pipe (2100) and a hot water pipe (2102); Clean water pipeline (220); and The water device (100) according to any one of claims 1 to 10, wherein the hot water pipe (2102) is connected to a water outlet pipe (22) of the water heater, the cold water pipe (2100) is used to introduce cold water, and the purified water pipeline (220) is connected to a water outlet pipe (32) of the water purifier.

12. The waterway system according to claim 11, characterized in that: The bathing pipeline (210) also includes a one-way valve (2104) connecting the cold water pipe (2100) and the hot water pipe (2102); the hot water pipe (2102) is connected to the cold water pipe (2100) in one direction through the one-way valve (2104), forming a one-way closed circulation loop connected to the heating unit (23).

13. A control method for a water device according to any one of claims 1 to 10, characterized in that: The control method comprises: Respond to user input; Control the operation of gas water heater and / or water purifier.

14. The control method according to claim 13, characterized in that: The instruction is a clean water heating instruction, and the control method includes: Control the water outlet pipe of the water heater downstream of the heat exchanger to be connected with the water inlet pipe of the water heater, so as to form a loop of water outlet pipe of the water heater → water inlet pipe of the water heater → water pump → heating unit → heat exchanger; Controlling the operation of the heating unit and the water pump so that the water is heated in the loop and circulates through the first heat exchange tube; The purified water in the water purifier is controlled to enter the second heat exchange tube of the heat exchanger, so that the heat of the hot water in the first heat exchange tube is transferred to the purified water in the second heat exchange tube.

15. The control method according to claim 14, characterized in that: The control method further comprises: Obtaining the current water temperature of purified water in the water outlet pipe of the water purifier downstream of the heat exchanger; It is determined that the current water temperature has not reached the target purified water temperature, and the heating unit is controlled to increase the combustion load. After the combustion load is increased, if the water temperature still has not reached the target purified water temperature, the electric heater arranged on the water outlet pipe of the water purifier and located downstream of the heat exchanger is controlled to heat.

16. The control method according to claim 14, characterized in that: The instructions further include a bathing instruction, and when a bathing instruction input by a user is received during the execution of the water purification and heating instruction, the control method includes: It is determined whether the water temperature of the purified water in the outlet pipe of the water purifier downstream of the heat exchanger reaches the target temperature of purified water. If the target temperature of purified water is not reached, the bathing instruction is not responded.

17. The control method according to claim 13, characterized in that: The instructions include a bathing instruction and a purified water heating instruction, and the bathing instruction precedes the purified water heating instruction. The control method includes: The heating unit is controlled to increase the combustion load according to the flow rate of the purified water, the temperature of the purified water in the water inlet pipe of the water purifier, and the target temperature of the purified water to be achieved after the purified water is heated.

18. The control method according to claim 17, characterized in that: The control method further comprises: Obtaining the water temperature of purified water in the water outlet pipe of the water purifier downstream of the heat exchanger; If the temperature of the purified water does not reach the target purified water temperature, obtain the first water temperature on the water inlet side and the second water temperature on the water outlet side of the electric heater arranged on the purified water outlet pipe and located downstream of the heat exchanger, control the heating of the electric heater according to the first water temperature, the second water temperature and the target purified water temperature, and adjust the combustion load of the heating unit.

19. The control method according to claim 13, characterized in that: When the instruction is an instruction for drinking purified water at room temperature, the control method includes: Control the purified water in the water purifier to enter the second heat exchange tube of the heat exchanger, and control the water outlet pipe of the water purifier downstream of the heat exchanger to discharge water.

20. The control method according to claim 19, characterized in that: The instructions also include bathing instructions, and the control method includes: The gas water heater is controlled to operate so that the hot water in the gas water heater enters the first heat exchange tube of the heat exchanger. When the hot water in the water outlet pipe of the water heater downstream of the heat exchanger reaches the target water temperature for bathing, the water outlet pipe of the water heater is controlled to discharge water.

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