Water purifier adapting device, water dispenser and control method of water purifier adapting device

Abstract

The application provides a water purifier adapting device, a water dispenser and a control method of the water purifier adapting device. The water purifier adapting device has a water outlet end and a water inlet end, and comprises: a heating pipeline and a return pipeline connected in parallel between the water inlet end and the water outlet end, the return pipeline is used for forming a circulation loop with the heating pipeline, the heating pipeline is provided with a heat exchanger, a water pump and a heater in series, the heat exchanger comprises a heat medium and an exchange pipeline which is in thermal coupling with the heat medium; a switching component switchable between a first station and a second station, the switching component is configured to make the water inlet end and the water outlet end pass through the heating pipeline when being in the first station and make the heating pipeline and the return pipeline communicate with each other to form a loop when being in the second station. The water purifier adapting device provided by the embodiment of the application can be connected with a water purifier to realize the function of temperature adjustment of the water outlet of the water purifier.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of water purification, and in particular to a water purifier adapting device, a water dispenser and a control method of the water purifier adapting device. BACKGROUND

[0002] With the improvement of living standards, people have higher and higher requirements for water. Some water dispensers have heating functions, and users can take water at the desired temperature according to their needs.

[0003] In the water dispenser with adjustable water temperature, one kind is provided with a hot tank to generate water at the desired temperature of the user by mixing with cold water, and the other kind is provided with an instant heater to generate water at the desired temperature of the user by adjusting the flow rate of water flowing through the instant heater.

[0004] However, the water dispenser with the hot tank has a large size of the hot tank, which wastes the use space, and the water dispenser with the instant heater has a large heating power, a small water flow and a difficult electric load for the circuit and wire of a general household. SUMMARY

[0005] In order to at least partially solve the problems existing in the prior art, according to a first aspect of the present application, a water purifier adapting device is provided. The water purifier adapting device has a water outlet end and a water inlet end for connecting with a water outlet of a water purifier, and the water purifier adapting device comprises: a heating pipeline and a return pipeline connected in parallel between the water inlet end and the water outlet end, wherein the return pipeline is used to form a circulation loop with the heating pipeline, a heat exchanger, a water pump and a heater are connected in series on the heating pipeline, the heat exchanger comprises a heat medium and an exchange pipeline which is thermally coupled with the heat medium; a switching assembly switchable between a first position and a second position, the switching assembly is configured to make the water inlet end and the water outlet end pass through the heating pipeline when in the first position and make the heating pipeline and the return pipeline communicate with each other to form a loop when in the second position; a first temperature sensor; and a controller, the controller is used to control the switching assembly to switch to the first position and control the water pump and the heater to work when the expected water temperature determined based on the user's water taking operation is higher than a preset heating temperature of the heat exchanger, and the controller is also used to control the switching assembly to switch to the second position and control the water pump and the heater to work until the water temperature in the exchange pipeline reaches the preset heating temperature when the water temperature detected by the first temperature sensor is lower than the preset heating temperature based on the user's water closing operation.

[0006] Therefore, the water purifier adapting device provided by the embodiment of the present application can be connected with the water purifier to realize the function of adjusting the temperature of the water outlet of the water purifier. The water purifier adapting device is provided with a heat exchanger and a heater, and compared with the water dispenser with a hot tank, the water purifier adapting device has a small size and occupies a small space because the space required for storing water is not arranged. In addition, because the water flow obtained by the user is not stored in advance, the water quality will not be deteriorated due to long-term storage, and the user can drink water more safely. Compared with the water dispenser with an instant heater, the water purifier adapting device can heat the water flow flowing through the heat exchanger, and the heat exchanger does not need to be powered during the heating process of the water flow. Only when the water flow flowing out of the heat exchanger needs to be heated again, the heater is started, so that the water purifier adapting device consumes less power, and the circuit wire of a general household can bear the working load. In addition, because the heat exchanger of the water purifier adapting device can heat the water flow once, compared with the instant water dispenser, the water temperature entering the heater is relatively high, and the water outlet speed of the water purifier adapting device can be faster when the user obtains the water flow with the same temperature, so that the water purifier adapting device can realize the function of large flux water outlet for the user. The water purifier adapting device can switch the water path between providing hot water for the user and accumulating heat energy for the heat medium through the reversing assembly, so that the water path structure of the water purifier adapting device 10 is more simple, and the water path integration is higher.

[0007] Exemplarily, the flow regulating assembly is arranged between the water inlet of the heating pipeline and the water inlet end of the water purifier, between the water outlet of the heating pipeline and the water outlet end, or on the heating pipeline, and the controller is further configured to control the water outlet flow of the flow regulating assembly according to the expected water taking temperature. The water purifier adapting device with the arrangement can adjust the water outlet temperature by adjusting the water flow in the heating pipeline, so that the water purifier adapting device is more flexible in adjusting the water outlet temperature.

[0008] Exemplarily, the water purifier adapting device further comprises a second temperature sensor. In the case that the heat exchanger in the heating pipeline is located upstream of the heater, the second temperature sensor is arranged at the water inlet of the heater or on the heating pipeline between the heat exchanger and the heater. In the case that the heat exchanger in the heating pipeline is located downstream of the heater, the second temperature sensor is arranged at the water inlet of the heater or on the heating pipeline upstream of the heater, and the controller is further configured to adjust the initial water outlet flow of the flow regulating assembly and / or the initial heating power of the heater according to the water inlet temperature detected by the second temperature sensor. By arranging the second temperature sensor, the control accuracy of the initial heating power and the initial water outlet flow of the controller can be improved, so that the water outlet temperature is more stable, and a good foundation can be provided for further adjusting the water outlet temperature.

[0009] Exemplarily, the water purifier adapting device further comprises a third temperature sensor, in the case that the heat exchanger in the heating pipeline is located upstream of the heater, the third temperature sensor is arranged at the water outlet of the heater or arranged on the heating pipeline downstream of the heater; in the case that the heat exchanger in the heating pipeline is located downstream of the heater, the third temperature sensor is arranged at the water outlet of the heat exchanger or arranged on the heating pipeline downstream of the heat exchanger, and the controller is further configured to adjust the current water flow of the flow adjusting assembly and / or the current heating power of the heater in real time according to the water temperature detected by the third temperature sensor. By arranging the third temperature sensor, the controller can make the water flow temperature at the water outlet closer to the set water taking temperature, thereby improving the user experience.

[0010] Exemplarily, the flow adjusting assembly comprises a first pressure reducing valve and a flow adjusting valve arranged in sequence along the water flow direction. This arrangement is simple in structure, easy to implement and low in product cost.

[0011] Exemplarily, the flow adjusting assembly comprises a zero pressure valve and a flow control pump arranged in sequence along the water flow direction. By arranging the zero pressure valve upstream of the flow control pump, the pressure at the water inlet of the flow control pump can be made to be nearly zero, thereby improving the accuracy of the flow control pump in adjusting the water flow, and further accurately adjusting the temperature of the water taken by the user.

[0012] Exemplarily, in the case that the flow adjusting assembly is arranged on the heating pipeline, the flow adjusting assembly and the water pump are an integral part. When the user takes water, the water pump can adjust the water flow in variable mode. After the user stops taking water, the water pump can serve as a power source for the water flow in the heating pipeline and the return pipeline, so as to make the water flow in the heating pipeline and the return pipeline circulate. In this way, the integration of the water purifier adapting device can be improved.

[0013] Exemplarily, the water purifier adapting device further comprises a drainage end and a drainage pipeline, the water inlet of the drainage pipeline is connected to the pipeline between the water purifier water inlet end and the flow adjusting assembly and located upstream of the heat exchanger and the heater, the water outlet of the drainage pipeline is connected to the drainage end, and a one-way valve is arranged on the drainage pipeline. In this way, for the water purifier connected to the water purifier water inlet end, the situation that the water purifier stops due to the excessively high pressure of the water outlet of the water purifier can be avoided, thereby improving the user experience.

[0014] Exemplarily, the water purifier adapting device comprises a raw water inlet end and a raw water pipeline, a water inlet of the raw water pipeline is connected to the raw water inlet end, a water outlet of the raw water pipeline is connected to the drain pipeline between the drain end and the one-way valve, and the drain end is used for being connected to the raw water inlet of the water purifier. In this way, the water source only needs to be connected to the water purifier adapting device, and the water purifier only needs to be connected to the water purifier adapting device to take water, and the water pipeline connection is simple. In addition, for the water purifier adapting device with the drain pipeline, the water flow discharged by the drain pipeline can be returned to the water purifier through the raw water pipeline, and no other pipeline needs to be additionally arranged to return the water flow in the return pipeline to the water purifier, and the water pipeline integration degree is high.

[0015] Exemplarily, a second pressure reducing valve is arranged on the raw water pipeline. When the flow regulating assembly controls the water flow of the pipeline where the flow regulating assembly is arranged, the excess water flow can smoothly flow to the raw water pipeline through the drain pipeline, and then return to the raw water inlet of the water purifier, and the returned water flow cannot enter the raw water pipeline due to excessive pressure in the raw water pipeline. In addition, by arranging the second pressure reducing valve, the water pressure in the raw water pipeline can be reduced, and the regulation accuracy of the flow regulating assembly to the water flow can be improved.

[0016] Exemplarily, the water purifier adapting device further comprises a first water inlet electromagnetic valve connected between the purified water inlet end and the water inlet of the drain pipeline, and the controller is further used for controlling the first water inlet electromagnetic valve to be closed based on the water-off operation of the user. The first water inlet electromagnetic valve is arranged upstream of the water inlet of the drain pipeline, and its function is to avoid the water flow from the purified water inlet end directly flowing to the drain end when the user stops taking water, so as to prevent the water purifier from not being able to stop, thereby enabling the water purifier to normally start and stop, and improving the user experience.

[0017] Exemplarily, the first temperature sensor is arranged on the heat exchanger and is used for detecting the temperature of the heat medium, and the controller is used for determining the water temperature in the exchange pipeline according to the temperature of the heat medium.

[0018] Exemplarily, the first temperature sensor is arranged on the heat exchanger and is used for detecting the water temperature in the exchange pipeline and sending the water temperature to the controller. In this way, the water temperature detected by the first temperature sensor is more direct and more accurate.

[0019] Exemplarily, the reversing assembly comprises a three-way reversing valve having a first reversing port, a second reversing port and a third reversing port, the first reversing port and the second reversing port are in communication when the reversing assembly is in the first position, and the first reversing port and the third reversing port are in communication when the reversing assembly is in the second position, wherein the first reversing port is connected to the purified water inlet end, the second reversing port is connected to the water inlet of the heating pipeline, and the third reversing port is connected to the water inlet of the backflow pipeline; or the first reversing port is connected to the water outlet end, the second reversing port is connected to the water outlet of the heating pipeline, and the third reversing port is connected to the water outlet of the backflow pipeline. The three-way reversing valve can be connected to the water pipeline in various ways, and the user can make a reasonable selection according to the actual situation.

[0020] Exemplarily, the reversing assembly further comprises a switch valve, the water inlet of the switch valve is connected to the water outlet of the backflow pipeline, and the water outlet of the switch valve is connected to the water outlet end, wherein the switch valve is opened when the reversing assembly is in the first position and is closed when the reversing assembly is in the second position. By providing the switch valve, the backflow pipeline and the water outlet end can be in a cut-off state when the reversing assembly is in the second position, so that the water flow can circulate between the heating pipeline and the backflow pipeline without flowing out of the water outlet end.

[0021] Exemplarily, on the heating pipeline, the heat exchanger and the heater are arranged in sequence along the direction from the water inlet to the water outlet of the heating pipeline. By arranging the heat exchanger upstream of the heater, the situation that the water flow heated by the heater is reversed to heat the heat exchanger can be avoided during the user's taking of hot water, and the influence of heat absorption of the heat exchanger on the heating of the water flow is reduced.

[0022] Exemplarily, the purified water machine adapting device further comprises a cold water pipeline connected between the purified water inlet end and the water outlet end, and a second water inlet electromagnetic valve electrically connected to the controller is arranged on the cold water pipeline, and the controller is configured to control the second water inlet electromagnetic valve to be opened when it is determined that the user expects to take water at a temperature lower than the preset heating temperature based on the user's water taking operation. If the user expects to take normal temperature water, the purified water machine adapting device can open the second water inlet electromagnetic valve to enable the user to directly take normal temperature water, thereby expanding the use range of the purified water machine adapting device.

[0023] Exemplarily, the purified water machine adapting device further comprises a water quality detector arranged on the cold water pipeline, and the water quality detector is electrically connected to the controller. The water quality detector can detect the water quality in the pipeline where the water quality detector is arranged. The controller can feed back the received detection information to the user, so that the user can better understand the water quality. In addition, arranging the water quality detector on the cold water pipeline can avoid damage of the water quality detector caused by hot water in the hot water pipeline.

[0024] According to a second aspect of the present application, a water dispenser is provided, comprising a purified water machine and any one of the purified water machine adapting devices described above, and the purified water port of the purified water machine is connected to the purified water inlet end.

[0025] According to a third aspect of the present application, a control method of a water purifier adapter is provided, the water purifier adapter having a water outlet end and a water inlet end for connecting with a water outlet of a water purifier, the water purifier adapter comprising: a heating circuit and a return circuit connected in parallel between the water inlet end and the water outlet end, wherein the return circuit is configured to form a circulation loop with the heating circuit, the heating circuit being provided with a heat exchanger, a water pump and a heater in series, the heat exchanger comprising a heat medium and an exchange circuit in thermal coupling with the heat medium; a switching assembly switchable between a first position and a second position, the switching assembly being configured to connect the water inlet end and the water outlet end through the heating circuit when in the first position and to connect the heating circuit and the return circuit to form a loop when in the second position; the control method comprising: when the expected water temperature determined based on a user water taking operation is higher than a preset heating temperature of the heat exchanger, controlling the switching assembly to switch to the first position and controlling the water pump and the heater to work; when the water temperature in the exchange circuit is lower than the preset heating temperature based on a user water closing operation, controlling the switching assembly to switch to the second position and controlling the water pump and the heater to work until the water temperature in the exchange circuit reaches the preset heating temperature.

[0026] Exemplarily, a flow regulating assembly is provided between the water inlet end and the water inlet of the heating circuit, between the water outlet end and the water outlet of the heating circuit, or on the heating circuit, and the control method further comprises controlling the water outlet flow of the flow regulating assembly according to the expected water temperature.

[0027] Exemplarily, the control method is further configured to adjust the initial water outlet flow of the flow regulating assembly and / or the initial heating power of the heater according to the water temperature entering the heater.

[0028] Exemplarily, the control method is further configured to adjust the current water outlet flow of the flow regulating assembly and / or the current heating power of the heater in real time according to the water temperature of the water outlet of the heating circuit.

[0029] A series of simplified concepts are introduced in the summary, which will be further described in detail in the specific embodiments. The summary part does not mean to try to limit the key features and essential technical features of the claimed technical solutions, nor to try to determine the protection scope of the claimed technical solutions.

[0030] The advantages and features of the present application will be described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0031] The following drawings of the present application are hereby incorporated as part of the present application for the purpose of understanding the present application. The embodiments of the present application and their description shown in the drawings are used to explain the principles of the present application. In the drawings,

[0032] Figure 1This is a schematic diagram of the water circuit of a water purifier adapter according to an exemplary embodiment of the present invention;

[0033] Figures 2-4 for Figure 1 A schematic diagram of a water circuit showing several exemplary embodiments of the heating and return pipes;

[0034] Figure 5 A schematic diagram of the water circuit of a water dispenser according to an exemplary embodiment of the present invention; and

[0035] Figures 6-9 This is a block diagram of a control method for a water purifier adapter according to an exemplary embodiment of the present invention.

[0036] The above figures include the following reference numerals:

[0037] 10. Water purifier adapter; 11. Purified water inlet; 12. Water outlet; 13. Drain; 14. Raw water inlet; 100. Heating pipe; 110. Heat exchanger; 111. Heat medium; 112. Exchange pipe; 120. Water pump; 130. Heater; 140. Flow regulating component; 141. Zero-pressure valve; 142. Flow control pump; 150. First inlet solenoid valve; 200. Return pipe; 300. Drain pipe; 310, Check valve; 400, Raw water pipeline; 410, Second pressure reducing valve; 500, Cold water pipeline; 510, Second inlet solenoid valve; 520, Water quality analyzer; 600, Reversing assembly; 610, Three-way reversing valve; 611, First reversing port; 612, Second reversing port; 613, Third reversing port; 620, Switch valve; 710, First temperature sensor; 720, Second temperature sensor; 730, Third temperature sensor. Detailed Implementation

[0038] In the following description, numerous details are provided to enable a thorough understanding of the invention. However, those skilled in the art will appreciate that the following description merely illustrates preferred embodiments of the invention, and that the invention can be practiced without one or more of these details. Furthermore, to avoid obscuring the invention, some technical features well-known in the art have not been described in detail.

[0039] According to one aspect of the present invention, a water purifier adapter 10 is provided, such as... Figure 1 As shown. The water purifier adapter 10 has a purified water inlet 11 and a water outlet 12. The purified water inlet 11 can be used to connect to the purified water outlet of the water purifier 20. The water outlet 12 can be used to connect to a faucet or other water dispensing device.

[0040] The water purifier adapting device can include a heating pipeline 100, a return pipeline 200, a switching assembly 600, a first temperature sensor 710, and a controller.

[0041] The heating pipeline 100 and the return pipeline 200 can be connected in parallel between the water inlet end 11 and the water outlet end 12 of the water purifier. The heating pipeline 100 can be used to heat the water flow passing therethrough. The return pipeline 200 can be used to form a circulation loop with the heating pipeline 100. The heating pipeline 100 can have a heat exchanger 110, a water pump 120, and a heater 130 connected in series thereon. The heat exchanger 110 can include a heat medium 111 and an exchange pipeline 112 thermally coupled with the heat medium 111. In some embodiments, the heat medium 111 can be a medium capable of storing heat, such as hot oil, hot sand, or hot salt. The exchange pipeline 112 can be arranged between the heat medium 111. In the process of heating the water flow in the exchange pipeline 112 by the heat medium, the water flow in the exchange pipeline 112 can absorb the heat released by the heat medium 111, thereby increasing the water temperature at the outlet of the heat exchanger 110.

[0042] The switching assembly 600 can have a first working position and a second working position which can be switched with each other. The switching assembly 600 can be configured to guide the water inlet end 11 and the water outlet end 12 to pass through the heating pipeline 100 when in the first working position, and to guide the heating pipeline 100 and the return pipeline 200 to communicate with each other to form a loop when in the second working position. That is, when the switching assembly 600 is in the first working position, the water flow from the water inlet end 11 can pass through the heating pipeline 100 to the water outlet end 12. When the switching assembly 600 is in the second working position, the water flow can circulate in the heating pipeline 100 and the return pipeline 200. The switching assembly 600 can have various structural forms. The switching assembly 600 can include one or more switching valves. The various embodiments of the switching assembly 600 will be described in detail below.

[0043] The first temperature sensor 710 can be any existing or future temperature sensor, which functions to detect the temperature of a part capable of reflecting the water temperature in the exchange pipeline 112. The controller can receive the temperature detected by the first temperature sensor 710, and directly or indirectly determine the water temperature in the exchange pipeline 112. In some embodiments, the first temperature sensor 710 can be arranged on the heat exchanger 110. The first temperature sensor 710 can be used to detect the temperature of the heat medium 111. The water temperature in the exchange pipeline 112 is determined by detecting the temperature of the heat medium 111. Of course, preferably, the first temperature sensor 710 can also be used to directly detect the water temperature in the exchange pipeline 112. In this way, the water temperature detected by the first temperature sensor 710 is more direct and more accurate.

[0044] The controller can be configured to control the switching assembly 600 to switch to the first station and control the water pump 120 and the heater 130 to work when the user's desired water temperature is higher than a preset heating temperature of the heat exchanger 110 based on the user's water taking operation. The controller can also be configured to control the switching assembly 600 to switch to the second station and control the water pump 120 and the heater 130 to work until the water temperature in the exchange pipeline 112 reaches the preset heating temperature based on the user's water closing operation and the temperature detected by the first temperature sensor 710.

[0045] The preset heating temperature of the heat exchanger 110 can be the lowest temperature that the water flow can be raised to after passing through the heat exchanger 110. For example, the heat medium of the heat exchanger 110 is at 80 degrees, and the water flow can be raised from normal temperature to 40 degrees after passing through the exchange pipeline 112 at the maximum flow rate, and the preset heating temperature can be 40 degrees. When the user's desired water temperature is higher than 40 degrees, the controller can control the switching assembly 600 to switch to the first station. Of course, it can be understood that the preset heating temperature can also be any temperature set by the user that is higher than the lowest temperature that the water flow can be raised to, such as 50 degrees, 60 degrees, or 70 degrees, etc. The setting of the preset heating temperature can help the controller to determine whether the switching assembly 600 needs to be switched to the first station to raise the water flow to the user's desired water temperature by using the heating pipeline 100.

[0046] The water flow heated by the heat exchanger 110 not only has the lowest temperature that can be reached, but also has the highest temperature that can be reached. Similarly, taking the heat medium of the heat exchanger 110 at 80 degrees as an example, the highest temperature that the water flow can reach after passing through the heat exchanger 110 will not exceed 80 degrees, and if the user's desired water temperature is 90 degrees, the controller can also control the heater 130 to heat. Of course, it can be understood that the controller can also adjust the temperature of the water flow at the water outlet 12 by adjusting the water flow of the water pump 120 or adjusting the heating power of the heater 130.

[0047] After the heat exchange between the heat medium 111 and the water flow in the heat exchanger 110, the temperature of the heat medium 111 itself is also reduced. In order to enable the heat exchanger 110 to play a normal heating function when the user takes water next time, the controller can control the switching assembly 600 to switch to the second station after the user stops taking water and it is determined that the water temperature in the exchange pipeline 112 is lower than the preset heating temperature, so as to form a ring pipeline by the heating pipeline 100 and the return pipeline 200. In other words, the switching assembly 600 can switch to the second station when the heating pipeline 100 is insufficient to heat the water flow in it to the expected water taking temperature of the user again after the user stops taking water. After the switching assembly 600 switches to the second station, the controller can also control the water pump 120 to start and the heater 130 to open. The water pump 120 can make the water flow in the heating pipeline 100 and the return pipeline 200 circulate, and at the same time, the heater 130 can heat the water flow circulating in the heating pipeline 100 and the return pipeline 200. After being heated, the water flow can flow to the heat exchanger 110, and the hot water can heat the heat medium 111 in reverse to increase the temperature of the heat medium 111, until the water temperature in the exchange pipeline 112 reaches the preset heating temperature. In this way, the heater 130 can be used to heat the heat exchanger 110 in reverse to accumulate heat energy in the heat exchanger 110.

[0048] The controller can be built by using electronic elements such as timers, comparators, registers, digital logic circuits, or realized by using processor chips such as single-chip microcomputers, microprocessors, programmable logic controllers (PLC), digital signal processors (DSP), field programmable gate arrays (FPGA), programmable logic arrays (PLA), application-specific integrated circuits (ASIC), and peripheral circuits thereof.

[0049] Therefore, the water purifier adapting device 10 provided by the embodiment of the present application can be connected with the water purifier to realize the function of adjusting the temperature of the water outlet of the water purifier. The water purifier adapting device 10 is provided with a heat exchanger 110 and a heater 130, compared with the water dispenser with a hot tank, the water purifier adapting device 10 does not need to set the space required for storing water, so the water purifier adapting device is small in size and occupies less space; because the water flow obtained by the user is not stored in advance, the water quality will not be deteriorated due to long-term storage of the water body, and the user can drink water more safely. Compared with the instant heater water dispenser, the water purifier adapting device 10 can heat the water flow flowing through the heat exchanger 110, and the heat exchanger 110 does not need to be powered on during the process of heating the water flow, only when the water flow flowing out of the heat exchanger 110 needs to be heated again, the heater 130 is started, so the water purifier adapting device consumes less power, and the circuit wire of a general household can bear its working load. In addition, because the heat exchanger 110 of the water purifier adapting device 10 can heat the water flow once, compared with the instant water dispenser, the water temperature entering the heater 130 is relatively high, and when the user obtains the water flow with the same temperature, the water outlet speed of the water purifier adapting device can be faster, and the function of large flux water outlet can be realized for the user. The water purifier adapting device 10 can switch the water path between providing hot water for the user and accumulating heat energy for the heat medium 111 through the reversing assembly 600, which makes the water path structure of the water purifier adapting device 10 more simple and the water path integration higher.

[0050] It should be noted that, Figures 1-4 The water purifier adapting device 10 is provided with a heat exchanger 110 and a heater 130, compared with the water dispenser with a hot tank, the water purifier adapting device 10 does not need to set the space required for storing water, so the water purifier adapting device is small in size and occupies less space; because the water flow obtained by the user is not stored in advance, the water quality will not be deteriorated due to long-term storage of the water body, and the user can drink water more safely. Compared with the instant heater water dispenser, the water purifier adapting device 10 can heat the water flow flowing through the heat exchanger 110, and the heat exchanger 110 does not need to be powered on during the process of heating the water flow, only when the water flow flowing out of the heat exchanger 110 needs to be heated again, the heater 130 is started, so the water purifier adapting device consumes less power, and the circuit wire of a general household can bear its working load. In addition, because the heat exchanger 110 of the water purifier adapting device 10 can heat the water flow once, compared with the instant water dispenser, the water temperature entering the heater 130 is relatively high, and when the user obtains the water flow with the same temperature, the water outlet speed of the water purifier adapting device can be faster, and the function of large flux water outlet can be realized for the user. The water purifier adapting device 10 can switch the water path between providing hot water for the user and accumulating heat energy for the heat medium 111 through the reversing assembly 600, which makes the water path structure of the water purifier adapting device 10 more simple and the water path integration higher. Figure 1 and Figure 2 In the Figure 3 and Figure 4In some embodiments, the heater 130 and the heat exchanger 110 can be arranged in sequence from the water inlet to the water outlet of the heating pipeline 100. In this way, the water flow can first pass through the heat exchanger 110 for a first temperature increase. If the temperature has reached the desired water temperature of the user, the heater 130 does not need to be started. If the temperature has not reached the desired water temperature of the user, the heater 130 is used for a second temperature increase. In addition, the heat exchanger 110 is arranged upstream of the heater 130, which can avoid the situation that the water flow heated by the heater 130 is reversed to heat the heat exchanger 110, and reduce the influence of heat absorption of the heat exchanger 110 on the water flow.

[0051] The reversing assembly 600 can have various forms. In some embodiments, Figure 1 and Figure 3 In some embodiments, the reversing assembly 600 can include a three-way reversing valve 610 arranged at the water inlet of the heating pipeline 100 and a switch valve 620 arranged downstream of the heating pipeline 100. In some embodiments, Figure 2 and Figure 4 In some embodiments, the reversing assembly 600 can only include a three-way reversing valve 610 arranged at the water outlet of the heating pipeline 100. The above various embodiments of the reversing assembly 600 can realize the mutual switching of the first working position and the second working position.

[0052] Exemplarily, in the embodiments in which the reversing assembly includes the three-way reversing valve 610, the three-way reversing valve 610 can have a first reversing port 611, a second reversing port 612 and a third reversing port 613. When the reversing assembly 600 is in the first working position, the first reversing port 611 and the second reversing port 612 are in conduction. When the reversing assembly 600 is in the second working position, the first reversing port 611 and the third reversing port 613 are in conduction.

[0053] In the embodiments as shown in Figure 1 and 3 The first reversing port 611 can be connected to the clean water inlet end 11. The second reversing port 612 can be connected to the water inlet of the heating pipeline 100. The third reversing port 613 can be connected to the water inlet of the return pipeline 200. As shown in Figure 1 In the first working position, the water flow can pass through the heat exchanger 110 and the heater 130 in sequence, and finally be discharged from the water outlet end 12. In the second working position, the heating pipeline 100 and the return pipeline 200 are connected in series to form a ring-shaped pipeline, and the water pump 120 serves as a power source for the water flow in the ring-shaped pipeline.

[0054] Exemplarily, in the embodiments as shown in Figure 1 and 3In the embodiment, the reversing assembly 600 can further comprise a switch valve 620. The water inlet of the switch valve 620 can be connected to the water outlet of the return pipeline 200, and the water outlet of the switch valve 620 can be connected to the water outlet end 12. The switch valve 620 is opened when the reversing assembly 600 is in the first position and is closed when the reversing assembly 600 is in the second position. By providing the switch valve 620, the return pipeline 200 and the water outlet end 12 can be in a cut-off state when the reversing assembly 600 is in the second position, so that the water flow can circulate between the heating pipeline 100 and the return pipeline 200 without flowing out of the water outlet end 12. Of course, it can be understood that in some embodiments, a faucet is provided on the water outlet end 12, and the user can also achieve the same effect as described above by closing the faucet when stopping taking water.

[0055] In other embodiments, as shown in Figure 2 and 4 The first reversing port 611 can be connected to the water outlet end 12. The second reversing port 612 can be connected to the water outlet of the heating pipeline 100. The third reversing port 613 can be connected to the water outlet of the return pipeline 200. As shown in Figure 2 In the first position, the water flow can pass through the heat exchanger 110 and the heater 130 in turn, and finally be discharged from the water outlet end 12 through the three-way reversing valve 610. In the second position, the heating pipeline 100 and the return pipeline 200 are connected in series to form a loop pipeline, and the three-way reversing valve 610 can also cut off the water flow to the water outlet end 12 at this time.

[0056] In summary, the three-way reversing valve 610 can be connected to the water pipeline in various ways, and the user can reasonably select according to the actual situation. Of course, it can be understood that in some embodiments, a combination of various reversing valves can also be used to replace the three-way reversing valve 610.

[0057] Exemplarily, the water purifier adapting device 10 can further comprise a flow regulating assembly 140. The flow regulating assembly 140 can be arranged at any position between the water inlet of the heating pipeline 100 and the water inlet end 11 of the water purifier, between the water outlet of the heating pipeline 100 and the water outlet end 12 of the water purifier, or on the heating pipeline 100. The controller is further configured to control the water flow rate of the flow regulating assembly 140 according to the desired water temperature. The flow regulating assembly 140 can comprise a flow regulating valve (throttle valve) or a flow control pump (variable pump). In general, the flow regulating assembly 140 is configured to regulate the water flow rate in the heating pipeline 100. The greater the water flow rate in the heating pipeline 100, the faster the water flow rate, and the lower the temperature rise of the water flow by the heat exchanger 110; the smaller the water flow rate, the slower the water flow rate, and the higher the temperature rise of the water flow by the heat exchanger 110. With the water purifier adapting device 10 having such a configuration, the water temperature can be adjusted by regulating the water flow rate in the heating pipeline 100, so that the water purifier adapting device 10 is more flexible in adjusting the water temperature.

[0058] Exemplarily, the flow regulating assembly 140 can comprise a first pressure reducing valve and a flow regulating valve arranged in sequence along the water flow direction. The flow regulating valve is configured to regulate the water flow rate. The first pressure reducing valve is configured to reduce the water pressure entering the flow regulating valve, so as to improve the accuracy of the flow regulating valve in regulating the water flow rate, and thus accurately adjust the temperature of the water desired by the user. Such a configuration is simple and easy to implement, and has low product cost. It can be understood that, in some embodiments, the flow regulating assembly 140 can only comprise a flow regulating valve. The flow regulating valve can be any existing or future variable throttle valve.

[0059] Preferably, the flow regulating assembly 140 can further comprise a zero pressure valve 141 and a flow control pump 142 arranged in sequence along the water flow direction. The flow control pump 142 can comprise a variable pump, which has a function similar to that of the flow regulating valve, and can control the water flow rate. By arranging the zero pressure valve 141 upstream of the flow control pump 142, the pressure at the water inlet of the flow control pump 142 can be nearly zero, so as to improve the accuracy of the flow control pump 142 in regulating the water flow rate, and thus accurately adjust the temperature of the water desired by the user. It should be noted that, Figure 1 In some embodiments, the zero pressure valve 141 and the flow control pump 142 can be arranged together upstream of the heating pipeline 100. In other embodiments, the zero pressure valve 141 and the flow control pump 142 can be arranged together downstream of the heating pipeline 100. Of course, it can be understood that the zero pressure valve 141 and the flow control pump 142 can also be arranged upstream and downstream of the heating pipeline 100, respectively. In some embodiments, the flow regulating assembly 140 can only comprise a flow control pump 142.

[0060] Exemplarily, when the flow regulating assembly 140 is arranged on the heating pipeline 100, the flow regulating assembly 140 can also be integrated with the water pump 120. In some embodiments, the water pump 120 can be a variable pump. When the user takes water, the water pump 120 can adjust the water flow in a variable manner. After the user stops taking water, the water pump 120 can serve as a power source for the water flow in the heating pipeline 100 and the return pipeline 200, so as to circulate the water flow in the heating pipeline 100 and the return pipeline 200. In this way, the integration of the water purifier adapting device 10 can be improved.

[0061] Exemplarily, the water purifier adapting device 10 can further include a drain end 13 and a drain pipeline 300. The water inlet of the drain pipeline 300 can be connected to the pipeline between the water purifier water inlet end 11 and the flow regulating assembly 140 and located upstream of the heat exchanger 110 and the heater 130. The water outlet of the drain pipeline 300 can be connected to the drain end 13. A one-way valve 310 can be arranged on the drain pipeline 300. When the flow regulating assembly 140 regulates the water flow in the pipeline where it is arranged, the excess water flow after the flow regulation can be drained through the drain pipeline 300, so as to reduce the pressure at the water purifier water inlet end 11 (the water outlet of the water purifier). In this way, for the water purifier connected to the water purifier water inlet end 11, the situation that the water purifier 20 stops working due to the excessively high pressure at the water outlet of the water purifier can be avoided, and the user experience can be improved.

[0062] Exemplarily, the water purifier adapting device 10 can further include a first water inlet electromagnetic valve 150 connected between the water purifier water inlet end 11 and the water inlet of the drain pipeline 300. The controller can be further configured to control the first water inlet electromagnetic valve 150 to be closed based on the user's water stopping operation. The first water inlet electromagnetic valve 150 can include any existing or future electromagnetic valve. When the user needs to take water at a temperature higher than the preset heating temperature, the controller can control the first water inlet electromagnetic valve 150 to be opened, the pressure at the water outlet of the water purifier is reduced, and the water purifier is started. When the user stops taking water at a temperature higher than the preset heating temperature, the controller controls the first water inlet electromagnetic valve 150 to be closed, the pressure at the water outlet of the water purifier is increased, and the water purifier stops working. That is, the first water inlet electromagnetic valve 150 can control the start and stop of the water purifier upstream of the water purifier adapting device 10. The first water inlet electromagnetic valve 150 is arranged upstream of the water inlet of the drain pipeline 300, which can avoid the water flow from the water purifier water inlet end 11 directly flowing to the drain end 13 when the user stops taking water, so that the water purifier cannot stop working, thereby enabling the water purifier to normally start and stop and improving the user experience.

[0063] For example, the water purifier adapter 10 may further include a raw water inlet 14 and a raw water pipeline 400. The inlet of the raw water pipeline 400 can be connected to the raw water inlet 14. The outlet of the raw water pipeline 400 can be connected to the drain pipeline 300 between the drain end 13 and the one-way valve 310. The drain end 13 can be used to connect to the raw water inlet of the water purifier. The raw water inlet 14 can be used to connect to a water source, such as a municipal water pipe. By setting up the raw water pipeline 400, raw water can first enter the water purifier adapter 10 through the raw water inlet 14, and then enter the water purifier through the drain end 13. In this way, the water source only needs to be connected to the water purifier adapter 10, and the water purifier only needs to be connected to the water purifier adapter 10 to obtain water, making the water connection simple. In addition, for the water purifier adapter 10 with the drain pipe 300, the water discharged from the drain pipe can be returned to the water purifier through the raw water pipe 400, without the need to set up other pipes to return the water in the return pipe 200 to the water purifier, resulting in a high degree of water circuit integration.

[0064] For example, a second pressure reducing valve 410 can also be installed on the raw water pipeline 400. The function of the second pressure reducing valve 410 is to reduce the water pressure in the pipeline downstream of the raw water pipeline 400. When the flow regulating component 140 controls the flow of water in its pipeline, excess water can flow smoothly through the drain pipeline 300 back into the raw water pipeline 400, and then back to the raw water inlet of the water purifier. The backflowing water will not be prevented from entering the raw water pipeline 400 due to excessive pressure. In addition, by installing the second pressure reducing valve 410, the water pressure in the raw water pipeline 400 can also be reduced, improving the flow regulating component 140's accuracy in regulating the water flow.

[0065] For example, the water purifier adapter 10 may also include a second temperature sensor 720. This is especially relevant when the heat exchanger 110 in the heating line 100 is located upstream of the heater 130. Figures 1-2 As shown, the second temperature sensor 720 can be installed at the water inlet of the heater 130 or on the heating pipe 100 between the heat exchanger 110 and the heater 130. When the heat exchanger 110 in the heating pipe 100 is located downstream of the heater 130, as... Figures 3-4 As shown, the second temperature sensor 720 can be installed at the inlet of the heater 130 or on the heating pipe upstream of the heater 130. The controller can be used to adjust the initial outlet flow rate of the flow regulating component 140 and / or the initial heating power of the heater 130 based on the inlet water temperature detected by the second temperature sensor 720.

[0066] The initial water flow rate and the initial heating power are collectively referred to as initial values. Affected by the external environment, the water temperature in the heating pipeline 100 will have a large fluctuation. The second temperature sensor 720 is arranged to set the initial values more accurately according to the temperature of the water flow before entering the heater 130. If the controller simply uses the preset heating temperature as a parameter or a preset fixed parameter to provide the initial values for the heating power of the heater 130 and the water flow rate of the flow rate adjusting assembly 140, the problems of insufficient energy efficiency (i.e., insufficient heating power or excessive water flow rate of the flow rate adjusting assembly 140) or excessive energy efficiency (i.e., excessive heating power or insufficient water flow rate of the flow rate adjusting assembly 140) may occur, and the water temperature will also be unstable. Therefore, by arranging the second temperature sensor 720, the control accuracy of the controller for the initial heating power and the initial water flow rate can be improved, which can not only make the water temperature more stable, but also provide a good basis for further adjusting the water temperature.

[0067] Exemplarily, the water purifier adapting device 10 can further include a third temperature sensor 730. In the case that the heat exchanger 110 in the heating pipeline 100 is located upstream of the heater 130, as shown in FIG. 1, the third temperature sensor 730 can be arranged at the water outlet of the heater 130 or on the heating pipeline downstream of the heater 130. Figures 1-2 In the case that the heat exchanger 110 in the heating pipeline 100 is located downstream of the heater 130, as shown in FIG. 2, the third temperature sensor 730 can be arranged at the water outlet of the heat exchanger 110 or on the heating pipeline 100 downstream of the heat exchanger 110. Figures 3-4 The controller can further be configured to adjust the current water flow rate of the flow rate adjusting assembly 140 and / or the current heating power of the heater 130 in real time according to the water temperature detected by the third temperature sensor 730. Based on the temperature detected by the third temperature sensor 730, the controller can compare it with the preset water taking temperature. During the user's water taking process, if the preset water taking temperature is higher, the controller can control the heater 130 to correspondingly increase the heating power or reduce the water flow rate of the flow rate adjusting assembly 140; otherwise, reduce the heating power or increase the water flow rate of the flow rate adjusting assembly 140. In summary, by arranging the third temperature sensor 730, the controller can make the water flow temperature of the water outlet end 12 closer to the set water taking temperature, and improve the user's experience.

[0068] Exemplarily, the water purifier adapting device 10 can further comprise a cold water pipeline 500 connected between the water inlet end 11 and the water outlet end 12. A second water inlet electromagnetic valve 510 electrically connected with the controller can be arranged on the cold water pipeline 500. The controller can be configured to control the second water inlet electromagnetic valve 510 to open when it is determined that the user expects to take water at a temperature lower than the preset heating temperature based on the user's water taking operation. In some embodiments, if the user expects to take normal temperature water, the water purifier adapting device 10 can open the second water inlet electromagnetic valve 510 to enable the user to directly take normal temperature water, thereby expanding the use range of the water purifier adapting device 10.

[0069] Exemplarily, the water purifier adapting device 10 can further comprise a water quality detector 520 arranged on the cold water pipeline 500. The water quality detector 520 can be electrically connected with the controller. The water quality detector 520 can detect the water quality in the pipeline where it is arranged. The controller can feed back the received detection information to the user to enable the user to better understand the water quality. In addition, arranging the water quality detector 520 on the cold water pipeline 500 can avoid damage of the water quality detector 520 caused by hot water in the hot water pipeline 100.

[0070] As shown in Figure 5 the electrical connection relationship between the controller and each controlled component is shown in the figure, and the dashed lines in the figure represent circuit connection lines.

[0071] According to a second aspect of the present application, a water dispenser is provided, as shown in Figure 5 The water dispenser can comprise the water purifier 20 and any of the water purifier adapting devices described above. The water outlet of the water purifier 20 can be connected with the water inlet end 11. The water purifier can be controlled to start and stop by the pressure at the water outlet. In this way, when the water purifier adapting device is connected with the water outlet of the water purifier, it can become a water dispenser capable of adjusting the water outlet temperature to adapt to different application scenarios. The water dispenser has simple structure, wide application range and low cost. For a water purifier without temperature adjustment function, an upgrading solution is provided.

[0072] According to a third aspect of the present application, a control method of a water purifier adapting device is provided. The water purifier adapting device has a water outlet end and a water inlet end for connecting with a water outlet of a water purifier. The water purifier adapting device comprises: a heating pipeline and a backflow pipeline connected in parallel between the water inlet end and the water outlet end, wherein the heating pipeline is provided with a heat exchanger, a water pump and a heater connected in series, the heat exchanger comprises a heat medium and an exchange pipeline thermally coupled with the heat medium; a switching assembly switchable between a first position and a second position, the switching assembly is configured to make the water inlet end and the water outlet end conduct through the heating pipeline when in the first position and make the heating pipeline and the backflow pipeline communicate with each other to form a loop when in the second position.

[0073] The control method comprises a step S100, as shown in Figure 6

[0074] When it is determined based on the user water taking operation that the expected water taking temperature is higher than the preset heating temperature of the heat exchanger, the control method controls the switching assembly to switch to the first station and controls the water pump and the heater to work.

[0075] When it is determined based on the user water closing operation and according to the water temperature in the exchange pipeline being lower than the preset heating temperature, the control method controls the switching assembly to switch to the second station and controls the water pump and the heater to work until the water temperature in the exchange pipeline reaches the preset heating temperature.

[0076] Exemplarily, a flow regulating assembly is arranged between the water inlet of the heating pipeline and the clean water inlet end, between the water outlet of the heating pipeline and the water outlet end, or on the heating pipeline, and the control method further comprises a step S200, as shown in Figure 7

[0077] Exemplarily, the control method further comprises a step S210, as shown in Figure 8

[0078] Exemplarily, the control method further comprises a step S220, as shown in Figure 9

[0079] In the description of the present application, it should be understood that the orientation words such as "front", "back", "up", "down", "left", "right", "transverse", "vertical", "perpendicular", "horizontal", and "top", "bottom" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate and imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner" and "outer" refer to the inner and outer relative to the contour of each component.

[0080] ​​​​For purposes of the description hereinafter, the terms "upper", "lower", "right", "left", "rear", "front", "vertical", "horizontal", and derivatives thereof shall relate to the application as it is oriented in the drawing figures. However, it is to be understood that the application can assume various alternative orientations and, accordingly, such terms are not to be taken as limitations of the present application, except where so expressly defined by the patentee. All such terms are to be interpreted in the manner that the terms are construed in the section entitled, "Definition of Terms", recited below. It is also to be understood that the following description, together with the accompanying figures, will be used herein to describe the application.

[0081] It is to be understood that the terminology used herein is for the purpose of describing the particular embodiments only and is not intended to be limiting, unless the contrary is indicated herein. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising", when used in this specification, specify the presence of stated features, steps, operations, components, elements, and / or groups thereof, but do not preclude the presence or addition of one or more other features, steps, operations, components, elements, and / or groups thereof.

[0082] It will be understood that the terms "first", "second", etc. are used herein solely to distinguish one element from another, without necessarily limiting the scope of the application. It will be further understood that where a term is used in the singular, it is also intended to encompass the plural, unless the context clearly indicates otherwise.

[0083] The application has been described herein with reference to the preferred embodiments. Obviously, modifications and alterations will occur to others upon reading and understanding the preceding detailed description, and it is intended to include all such modifications and alterations insofar as they come within the scope of the appended claims and their equivalents.

Claims

1. A water purifier adapter device, characterized by, The water purifier adaptation device has a water outlet end and a water inlet end for connecting with a water outlet of a water purifier, and comprises: a heating pipeline and a return pipeline connected in parallel between the water inlet end and the water outlet end, wherein the return pipeline forms a circulation loop with the heating pipeline, and the heating pipeline is provided with a heat exchanger, a water pump and a heater in series; a switching assembly switchable between a first station and a second station, the switching assembly being configured to pass the water inlet end and the water outlet end through the heating pipeline when in the first station and to connect the heating pipeline and the return pipeline to each other to form a loop when in the second station; a first temperature sensor; and a controller configured to control the switching assembly to switch to the first station and control the water pump and the heater to work when a desired water temperature determined based on a user water taking operation is higher than a preset heating temperature of the heat exchanger, and to control the switching assembly to switch to the second station and control the water pump and the heater to work until the water temperature in the exchange pipeline reaches the preset heating temperature when the water temperature in the exchange pipeline detected by the first temperature sensor is lower than the preset heating temperature based on a user water turning-off operation.

2. The water purifier adaptor device of claim 1, wherein, The heating pipeline is provided with a flow regulating assembly between the water inlet end and the water outlet end or on the heating pipeline, and the controller is further configured to control the water flow of the flow regulating assembly according to the desired water temperature.

3. The water purifier adapter device of claim 2, wherein, The water purifier adaptation device further comprises a second temperature sensor, In the case that the heat exchanger in the heating pipeline is upstream of the heater, the second temperature sensor is arranged at the water inlet of the heater or on the heating pipeline between the heat exchanger and the heater; In the case that the heat exchanger in the heating pipeline is downstream of the heater, the second temperature sensor is arranged at the water outlet of the heat exchanger or on the heating pipeline downstream of the heat exchanger, The controller is further configured to adjust the initial water flow of the flow regulating assembly and / or the initial heating power of the heater according to the water inlet temperature detected by the second temperature sensor.

4. The water purifier adaptor device of claim 3, wherein, The water purifier adaptation device further comprises a third temperature sensor, In the case that the heat exchanger in the heating pipeline is upstream of the heater, the third temperature sensor is arranged at the water outlet of the heater or on the heating pipeline downstream of the heater; In the case that the heat exchanger in the heating pipeline is downstream of the heater, the third temperature sensor is arranged at the water outlet of the heat exchanger or on the heating pipeline downstream of the heat exchanger, The controller is further configured to adjust the current water flow of the flow regulating assembly and / or the current heating power of the heater in real time according to the water outlet temperature detected by the third temperature sensor.

5. The water purifier adapting device according to claim 2, wherein the flow regulating assembly comprises a first pressure reducing valve and a flow regulating valve arranged in sequence along the water flow direction; or the flow regulating assembly comprises a zero pressure valve and a flow control pump arranged in sequence along the water flow direction; or the flow regulating assembly is integrated with the water pump when the flow regulating assembly is arranged on the heating pipeline. The water purifier adapting device further comprises a water outlet and a water outlet pipeline, the water inlet of the water outlet pipeline is connected to the pipeline between the purified water inlet and the flow regulating assembly and is located upstream of the heat exchanger and the heater, the water outlet of the water outlet pipeline is connected to the water outlet, and a one-way valve is arranged on the water outlet pipeline. The water purifier adapting device comprises a raw water inlet and a raw water pipeline, the water inlet of the raw water pipeline is connected to the raw water inlet, the water outlet of the raw water pipeline is connected to the water outlet pipeline between the water outlet and the one-way valve, and the water outlet is used to be connected to the raw water inlet of the water purifier. A second pressure reducing valve is arranged on the raw water pipeline. The water purifier adapting device further comprises a first water inlet electromagnetic valve connected between the purified water inlet and the water inlet of the water outlet pipeline, and the controller is further used to control the first water inlet electromagnetic valve to be closed based on the water-off operation of the user.

6. The water purifier adapter apparatus of claim 2, wherein, The first temperature sensor is arranged on the heat exchanger and is used to detect the temperature of the heat medium, and the controller is used to determine the water temperature in the exchange pipeline according to the temperature of the heat medium.

7. The water purifier adapter device of claim 6, wherein, The first temperature sensor is arranged on the heat exchanger and is used to detect the water temperature in the exchange pipeline and send it to the controller.

8. The water purifier adapter device of claim 7, wherein, The reversing assembly comprises a three-way reversing valve, the three-way reversing valve has a first reversing port, a second reversing port and a third reversing port, the first reversing port and the second reversing port are in conduction when the reversing assembly is in the first position; and the first reversing port and the third reversing port are in conduction when the reversing assembly is in the second position, wherein the first reversing port is connected to the purified water inlet, the second reversing port is connected to the water inlet of the heating pipeline, and the third reversing port is connected to the water inlet of the return pipeline; or the first reversing port is connected to the water outlet, the second reversing port is connected to the water outlet of the heating pipeline, and the third reversing port is connected to the water outlet of the return pipeline.

9. The water purifier adapter apparatus of claim 6, wherein, The reversing assembly further comprises a switch valve, the water inlet of the switch valve is connected to the water outlet of the return pipeline, and the water outlet of the switch valve is connected to the water outlet, wherein the switch valve is opened when the reversing assembly is in the first position and is closed when the reversing assembly is in the second position.

10. The water purifier adapter apparatus of claim 1, wherein, The heat exchanger and the heater are arranged in sequence along the direction from the water inlet to the water outlet of the heating pipeline.

11. The water purifier adapter apparatus of claim 1, wherein, ​ 12. The water purifier adapter apparatus of claim 1, wherein, ​ ​ ​ ​ 13. The water purifier adapter apparatus of claim 12, wherein, ​ 14. The water purifier adapter apparatus of claim 1, wherein, ​ 15. The water purifier adapter apparatus of claim 1, wherein, The water purifier adaptation device further comprises a cold water pipeline connected between the water inlet end and the water outlet end, and a second water inlet electromagnetic valve electrically connected to the controller is arranged on the cold water pipeline, and the controller is configured to control the second water inlet electromagnetic valve to open when the expected water temperature determined based on the user water taking operation is lower than the preset heating temperature.

16. The water purifier adaptor device of claim 15, wherein, The water purifier adaptation device further comprises a water quality detector arranged on the cold water pipeline, and the water quality detector is electrically connected to the controller.

17. A water dispenser, characterized by A water purifier and the water purifier adaptation device according to any one of claims 1-16 are provided, and a water outlet of the water purifier is connected to the water inlet end of the water purifier adaptation device.

18. A control method of a water purifier adaptation device, characterized by, The water purifier adaptation device has a water outlet end and a water inlet end for connecting to a water outlet of a water purifier, and the water purifier adaptation device comprises: a heating pipeline and a return pipeline connected in parallel between the water inlet end and the water outlet end, wherein the return pipeline is configured to form a circulation loop with the heating pipeline, and the heating pipeline is provided with a heat exchanger, a water pump and a heater in series; a switching assembly switchable between a first position and a second position, and the switching assembly is configured to guide the water inlet end and the water outlet end to pass through the heating pipeline when in the first position and to guide the heating pipeline and the return pipeline to communicate with each other to form a loop when in the second position; The control method comprises: when the expected water temperature determined based on the user water taking operation is higher than the preset heating temperature of the heat exchanger, the switching assembly is controlled to switch to the first position, and the water pump and the heater are controlled to work; when the user water turning-off operation is detected and the water temperature in the exchange pipeline is lower than the preset heating temperature, the switching assembly is controlled to switch to the second position, and the water pump and the heater are controlled to work until the water temperature in the exchange pipeline reaches the preset heating temperature.

19. The control method of the water purifier adaptation device according to claim 18, wherein, A flow regulating assembly is arranged between the water inlet end and the water outlet end of the heating pipeline or on the heating pipeline, and the control method further comprises controlling the outflow of the flow regulating assembly according to the expected water temperature.

20. The control method of the water purifier adaptation device according to claim 19, wherein The control method is further configured to adjust the initial outflow of the flow regulating assembly and / or the initial heating power of the heater according to the water temperature entering the heater.

21. The control method of the water purifier adaptation device according to claim 19, wherein The control method is further configured to adjust the current outflow of the flow regulating assembly and / or the current heating power of the heater in real time according to the water temperature of the heating pipeline.

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