Water dispenser

Abstract

The utility model provides a water dispenser, which comprises a water outlet pipeline for discharging water from a first water tank or a second water tank arranged on a shell body of the water dispenser to a water outlet cock; one end of the recycling pipeline is connected with the water outlet pipeline, and the other end of the recycling pipeline is connected with the first water tank or the second water tank; a flow path conversion valve which is installed at the connection part of the recovery line and the water outlet line and converts the flow path of the water supplied through the water outlet line to the recovery line or the water outlet cock; and a control unit that operates and controls the flow path conversion valve, the first water tank and the second water tank respectively storing water having different temperatures from each other.

Description

Technical Field

[0001] This utility model relates to a water dispenser with a residual water recovery function. More specifically, it relates to a water dispenser with a residual water recovery function that prevents temperature changes in cold and hot water caused by residual water remaining in the water outlet pipe during the initial water dispensing process, and ensures that cold and hot water at normal temperatures are always dispensed. Background Technology

[0002] Recently, due to rapid industrial development, environmental pollution has become increasingly serious, with water pollution reaching a severe level, to the point that most places, such as homes and public administration offices, rely on water dispensers or water purifiers for drinking water.

[0003] Water dispensers are typically designed to dispense drinking water from a water tank, and they also have internal heating or cooling devices.

[0004] Such water dispensers typically include a housing body into which a water bucket can be inserted; a cold water tank, located inside the housing body, to cool the water flowing in from the water bucket; a hot water tank, connected to the cold water tank, to heat the water flowing in from the cold water tank; and a water outlet valve, which allows for the dispensing of either cold or hot water.

[0005] When the user operates the cold or hot water outlet, water is supplied from the cold or hot water tank through the outlet pipeline, and the cold or hot water is dispensed through the outlet valve.

[0006] Water dispenser buckets are usually placed on top of the main body of the machine in an exposed state, which may lead to problems such as water bucket contamination, internal deterioration of the water, and a decrease in the aesthetics of the interior space.

[0007] To address this issue, a separate lid has been developed and is currently in use to surround the water tank. However, this is not an integrated product with the water dispenser but a separate product. Therefore, it not only fails to integrate accurately with the water dispenser, causing inconvenience in use, but also does little to improve the aesthetics of the room.

[0008] In addition, in order to solve this problem, water dispensers of various shapes or structures have been developed recently, but the development level is still low. For example, the change in shape or structure has caused problems with the function of dispensing cold or hot water.

[0009] Existing technical documents

[0010] Patent documents

[0011] Patent Document 0001: Korean Patent No. 10-0710875 Utility Model Content

[0012] This invention was conceived to solve the problems existing in the prior art. One object of this invention is to provide a water dispenser that, during the process of dispensing water from a first or second water tank storing water at different temperatures (e.g., the first water tank stores cold water and the second water tank stores hot water), after recovering residual water from the water outlet pipeline at the initial stage of water dispensing, dispenses water from the first or second water tank, thereby preventing temperature changes in the discharged water due to residual water mixing during the initial water dispensing process, and ensuring that water is always dispensed at the accurately set temperature.

[0013] Another objective of this invention is to provide a water dispenser that can either recycle residual water based on the conditions of a water dispensing operation signal, or dispense cold or hot water along with residual water without recycling residual water, thereby ensuring that cold and hot water are dispensed at normal temperatures while minimizing the time delay of the recycling process, thus enabling rapid water dispensing.

[0014] The technical solution of this utility model for solving the above-mentioned problems is as follows.

[0015] This utility model provides a water dispenser, comprising: a water outlet pipeline that dispenses water from a first or second water tank disposed on the housing of the water dispenser to a water outlet valve; a recovery pipeline, one end of which is connected to the water outlet pipeline and the other end of which is connected to the first or second water tank; a flow path switching valve installed at the connection between the recovery pipeline and the water outlet pipeline, which switches the flow path of the water supplied through the water outlet pipeline to the recovery pipeline or the water outlet valve; and a control unit that operates and controls the flow path switching valve, wherein the first and second water tanks respectively store water at different temperatures.

[0016] The recovery pipeline is connected at one end to the location adjacent to the outlet valve in the overall section of the outlet pipeline.

[0017] The housing body is configured to allow a bucket to be inserted into it. A first water tank is disposed in the internal space of the housing body to allow water to flow from the bucket inserted into the housing body. A second water tank is connected to the first water tank via a connecting pipe to allow water stored in the first water tank to flow in.

[0018] The water dispenser also includes a conduit that protrudes upward from the housing body and has a water outlet valve formed at its upper end, positioned above the water tank.

[0019] The water outlet pipeline is configured such that its lower end is connected to the first water tank and the second water tank respectively, and its upper end is connected to the water outlet valve, so that water can be discharged through the water outlet valve.

[0020] The water dispenser also includes a first supply pump and a second supply pump, which operate to discharge and supply water from the first water tank and the second water tank through the water outlet pipeline respectively. The control unit operates and controls the first supply pump and the second supply pump according to the user's water outlet operation signal.

[0021] The control unit controls the water to flow from the first water tank or the second water tank to the outlet valve based on the water outlet operation signal generated by the user, and controls the flow path switching valve to switch the water flow path to the recovery pipeline or the outlet valve during the water outlet process.

[0022] When a user generates a water discharge operation signal, the control unit controls the operation of the flow path switching valve to perform a first water discharge mode after recovering the water stored in the water discharge pipeline through the recovery pipeline, discharging water from the first water tank or the second water tank to the water discharge cock.

[0023] In the first water outlet mode, the control unit operates by directing the flow path switching valve toward the recycling pipeline within a preset recycling time, and then directing the flow path switching valve toward the water outlet valve after the recycling time.

[0024] The control unit determines whether the water outlet operation signal corresponds to a preset recycling condition. When the water outlet operation signal corresponds to the recycling condition, the control unit controls the flow path switching valve to execute the first water outlet mode. When the water outlet operation signal does not correspond to the recycling condition, the control unit controls the flow path switching valve to execute the second water outlet mode, in which water from the first water tank or the second water tank is discharged together with water stored on the water outlet pipeline.

[0025] The recovery conditions include a first condition regarding whether the time interval between the current water discharge operation signal and the previous water discharge operation signal is greater than a reference time. When the water discharge operation signal corresponds to the first condition, the control unit controls the operation to execute the first water discharge mode.

[0026] The recovery conditions also include a second condition regarding whether the temperature of the water discharged according to the current water discharge operation signal is different from that of the water discharged according to the previous water discharge operation signal. When the water discharge operation signal does not correspond to the first condition, the control unit determines whether it corresponds to the second condition. When it corresponds to the second condition, the flow path switching valve is controlled to execute the first water discharge mode.

[0027] The effects of this utility model are as follows.

[0028] According to this utility model, the following effects are achieved: during the process of discharging water at different temperatures, such as cold water or hot water, from the first water tank and the second water tank, the residual water in the outlet pipeline is recovered at the beginning of the discharging process before cold water or hot water is discharged. This prevents the temperature of cold water and hot water from changing due to the mixing of residual water during the initial discharging process, and ensures that cold water and hot water at normal temperatures are always discharged.

[0029] In addition, it has the following effects: it can recover residual water according to the conditions of the water output operation signal, or it can output cold or hot water together with residual water without recovering residual water. This ensures that cold and hot water with the set temperature is always output while minimizing the recovery time delay, thereby enabling rapid water output. Attached Figure Description

[0030] Figure 1 This is a perspective view schematically showing the external shape of a water dispenser according to an embodiment of the present invention.

[0031] Figure 2 This is a schematic cross-sectional view illustrating the internal structure of a water dispenser according to an embodiment of the present invention.

[0032] Figure 3 This is a diagram conceptually illustrating the entire flow path structure of a water dispenser according to an embodiment of the present invention.

[0033] Figure 4 This is a block diagram schematically illustrating the control-related structure of a water dispenser according to an embodiment of the present invention.

[0034] Figure 5 This is a flowchart illustrating the water dispensing control process of a water dispenser according to an embodiment of the present invention.

[0035] Figure 6 This is a diagram conceptually illustrating the overall flow path structure of a water dispenser according to another embodiment of the present invention.

[0036] Figure Labels

[0037] 100: Housing body; 110: Cover; 120: Conduit; 130: Outlet valve; 140: Operating unit; 210: First water tank; 211: First supply pump; 220: Second water tank; 221: Second supply pump; 222: Vent; 230: Connecting pipeline; 300: Outlet pipeline; 310: Cold water outlet pipeline; 311: Cold water valve; 320: Hot water outlet pipeline; 321: Hot water valve; 400: Recovery pipeline; 410: Flow path switching valve; 500: Vent pipeline; 510: On / off valve; 600: Control unit. Detailed Implementation

[0038] The specific embodiments for implementing this utility model will now be described in detail with reference to the accompanying drawings.

[0039] First, when affixing reference numerals to the constituent elements in each figure, it should be noted that the same constituent elements should be given the same reference numerals as much as possible, even if they are shown in different figures. Furthermore, in describing this utility model, if it is determined that a detailed description of a relevant known structure or function might obscure the main idea of ​​this utility model, such a detailed description will be omitted.

[0040] Furthermore, when a constituent element is described as being “connected,” “supported,” “linked,” “supplied,” “transmitted,” or “in contact” with another constituent element, it should be understood that it may be directly connected, supported, linked, supplied, transmitted, or in contact with that other constituent element, but there may also be other constituent elements in between.

[0041] The terminology used in this specification is for describing particular embodiments only and is not intended to limit the scope of the invention. Unless the context clearly defines otherwise, singular expressions include plural expressions.

[0042] Furthermore, it should be noted that in this specification, the terms "top," "bottom," and "side" are based on the illustrations in the figures. These terms may differ depending on the orientation of the object. For the same reason, some components in the figures are exaggerated, omitted, or shown schematically, and the size of each component does not perfectly reflect its actual size.

[0043] Furthermore, terms including ordinal numbers such as first and second can be used to describe various constituent elements, but these constituent elements are not limited by these terms. These terms are used only for the purpose of distinguishing one constituent element from another.

[0044] The term "comprising" as used in this specification means that a particular feature, region, integer, step, action, element, and / or component is specified, but does not exclude the presence or addition of other particular features, regions, integers, steps, actions, elements, components, and / or groups.

[0045] Figure 1 This is a perspective view schematically showing the external appearance of a water dispenser according to an embodiment of the present invention. Figure 2 This is a schematic cross-sectional view illustrating the internal structure of a water dispenser according to an embodiment of the present invention. Figure 3 This is a diagram conceptually illustrating the entire flow path structure of a water dispenser according to an embodiment of the present invention.

[0046] In one embodiment of the water dispenser of this utility model, the water outlet valve is located above the water tank, which has a structure with excellent ease of use and aesthetic design. It includes a housing body 100, a first water tank 210, a second water tank 220, a conduit 120, a water outlet line 300, a first supply pump 211, a second supply pump 221, a recovery line 400, a flow path switching valve 410, and a control unit 600.

[0047] The shell body 100 is a shell with an internal accommodating space, and is configured to allow a water bucket 10 to be inserted and placed on it. A water bucket connection port (not shown) is formed on the top of the shell body 100 so as to allow the water bucket 10 to be inserted and placed on it. As the water bucket 10 is placed in the water bucket connection port, water is supplied downward from the water bucket 10 through the water bucket connection port.

[0048] The cover 110, which forms the exterior of the water tank 10, can be detachably attached to the shell body 100. The cover 110 can be attached to the shell body 100 using various attachment structures, such as sliding left and right or inserting up and down. Such a cover 110 can function as a component of the shell body 100 when attached to it.

[0049] The first water tank 210 and the second water tank 220 store water at different temperatures. For example, the first water tank 210 and the second water tank 220 can store purified water at room temperature, cold water, or hot water. In the following description, the first water tank 210 is described as a cold water tank for storing cold water, and the second water tank 220 is described as a hot water tank for storing hot water, but the scope of this utility model is not limited thereto.

[0050] The first water tank 210 is disposed in the interior space of the housing body 100 such that water flows in from the water bucket 10 inserted into the housing body 100. The first water tank 210 is provided with a separate cooling device (not shown) to cool the water stored inside the first water tank 210.

[0051] The second water tank 220 is located below the first water tank 210 and is connected to the first water tank 210 via a connecting pipe 230 so that water stored in the first water tank 210 can flow in. The second water tank 220 is equipped with a separate heating device (not shown) to heat the water stored inside the second water tank 220. A vent 222 can be formed on the top of the second water tank 220 to release internal pressure.

[0052] A hollow tubular conduit 120 is disposed protruding upward on one side of the upper part of the housing body 100. A water outlet valve 130 is installed at the upper end of the conduit 120 to allow cold or hot water to be dispensed. A user-operable control section 140 is formed on one side of the conduit 120. The control section 140 may be equipped with buttons or the like for dispensing cold or hot water.

[0053] At this time, the conduit 120 is configured such that its upper end is positioned above the top of the water tank 10, and the water outlet valve 130 is formed at the upper end of the conduit 120, thus the water outlet valve 130 is positioned above the top of the water tank 10. A cover 110 is disposed on the outside of the water tank 10, and the cover 110 functions as part of the housing body 100, so a water receiving portion 111 located at the vertical lower part of the water outlet valve 130 can be formed on the top of the cover 110.

[0054] Thus, since the water outlet valve 130 is located at the top of the water tank 10, unlike the water outlet valve of a typical water dispenser which is located at a relatively high position, users can dispense cold or hot water without bending over, thereby improving user convenience. Furthermore, a water receiving part 111 is formed on the top of the cover 110, and the cover 110 functions as part of the housing body 100. At the same time, the high position of the water outlet valve 130 enhances the overall aesthetic design.

[0055] The water outlet pipe 300 is connected to the water outlet valve 130 in a manner that allows for the dispensing of either cold or hot water. The lower end of the water outlet pipe 300 is connected to both the first water tank 210 and the second water tank 220, and the upper end is connected to the water outlet valve 130. For example, as... Figure 2 and Figure 3 As shown, the water outlet pipeline 300 may include: a cold water outlet pipeline 310, one end of which is connected to the first water tank 210; and a hot water outlet pipeline 320, one end of which is connected to the second water tank 220. The cold water outlet pipeline 310 and the hot water outlet pipeline 320 are integrated into one before entering the conduit 120, so that one water outlet pipeline 300 can be connected to the water outlet valve 130 along the conduit 120.

[0056] A cold water valve 311 and a hot water valve 321 can be installed on the cold water outlet pipe 310 and the hot water outlet pipe 320, respectively. The cold water valve 311 and the hot water valve 321 can be solenoid valves, and are normally kept in a closed working state, and are opened only during the cold water or hot water outlet process.

[0057] The housing body 100 is equipped with: a first supply pump 211, which operates to supply cold water from the first water tank 210 through the outlet pipe 300; and a second supply pump 221, which operates to supply hot water from the second water tank 220 through the outlet pipe 300.

[0058] The first supply pump 211 is installed on the cold water outlet line 310 of the outlet line 300, and using the pumping pressure of the first supply pump 211, water from the first water tank 210 is supplied to the outlet valve 130 through the outlet line 300. The second supply pump 221 can be installed on the connecting line 230 connecting the first water tank 210 and the second water tank 220. Water is supplied from the first water tank 210 to the second water tank 220 by the second supply pump 221, and using the pumping pressure of the second supply pump 221, water from the second water tank 220 is supplied to the outlet valve 130 through the outlet line 300.

[0059] In one embodiment of this invention, the water outlet valve 130 is located above the water tank. Therefore, unlike a typical water dispenser, water cannot be discharged from the first water tank 210 and the second water tank 220 due to the difference in potential energy. Thus, in one embodiment of this invention, water is supplied from the first water tank 210 and the second water tank 220 to the water outlet valve 130 using the pumping pressure of the first supply pump 211 and the second supply pump 221.

[0060] Furthermore, in one embodiment of the present invention, the water outlet valve 130 is located at the upper part of the housing body 100 in a manner higher than the water tank, so the length of the water outlet pipe 300 connecting the first water tank 210 and the second water tank 220 located inside the housing body 100 to the water outlet valve 130 is relatively long.

[0061] When the process of cold or hot water flowing out through the outlet valve 130 is completed, the water flow is interrupted, so the cold or hot water that has not yet been discharged remains inside the outlet pipe 300. The residual water remaining on the outlet pipe 300 is mainly in the area from the outlet valve 130 to the cold water valve 311 and the hot water valve 321.

[0062] After a certain period of time, with cold or hot water remaining inside the outlet pipe 300, the water exchanges heat with the outside at room temperature. The cold water loses its coldness, and the hot water loses its heat. In other words, the water remaining inside the outlet pipe 300 returns to room temperature after a certain period. In this state, when the user operates the control unit 140 to start a new water dispensing process, the water remaining inside the outlet pipe 300 is discharged first through the outlet valve 130. Cold or hot water is only dispensed after all the remaining water in the outlet pipe 300 has been discharged. That is, because only the remaining water in the outlet pipe 300 is discharged at the beginning of the water dispensing process, the user cannot obtain cold or hot water at normal temperature.

[0063] In one embodiment of this utility model, a recovery pipeline 400 and a flow path switching valve 410 are installed to prevent residual water from flowing out of the outlet pipeline 300 during the initial water outflow process.

[0064] One end of the recovery line 400 is connected to the outlet valve 130 along the entire length of the outlet line 300, and the other end is connected to the first water tank 210. A flow path switching valve 410 is installed at the connection between the recovery line 400 and the outlet line 300, and operates to switch the flow path of water supplied through the outlet line 300 to either the recovery line 400 or the outlet valve 130. The flow path switching valve 410 is operated and controlled by the control unit 600.

[0065] During the process of discharging cold or hot water through such a recovery pipeline 400 and flow path switching valve 410, it can be controlled so that the residual water of the outlet pipeline 300 is initially recovered to the first water tank 210 through the recovery pipeline 400, and cold or hot water is discharged normally after the residual water is recovered.

[0066] That is, when a user generates a water outlet operation signal, the control unit 600 can control the operation of the flow path switching valve 410 to discharge cold or hot water after recovering the water stored in the water outlet pipeline 300 through the recovery pipeline 400. Figure 3 The residual water recovery path of the initial outlet water pipeline 300 is shown by a dashed line.

[0067] More specifically, the control unit 600 can control the operation of the flow path switching valve 410 to execute either the first water discharge mode or the second water discharge mode when a water discharge operation signal is generated.

[0068] The first water outlet mode is a mode that outputs cold or hot water after the residual water in the recovery pipeline 400 is recovered. The second water outlet mode is a mode that outputs cold or hot water immediately without going through the residual water recovery process in the recovery pipeline 400.

[0069] In the first water output mode, the control unit 600 can be operated to direct the flow path switching valve 410 toward the recovery line 400 within a preset recovery time, and to direct the flow path switching valve 410 toward the outlet valve 130 after the recovery time. The recovery time can be set in various ways according to user needs. For example, it can be set to 1 second, 2 seconds, etc.

[0070] Thus, by executing the first water outlet mode by the control unit 600, residual water in the outlet pipeline 300 can be prevented from being discharged in the initial stage of the cold or hot water outlet process, and the cold or hot water at the normal temperature can always be discharged accurately.

[0071] The control unit 600 can also control the operation of the flow path switching valve 410 to execute the first water discharge mode whenever a water discharge operation signal is generated. However, since the water discharge process is delayed during the residual water recovery period in the first water discharge mode, the second water discharge mode is executed according to the conditions for the generation of the water discharge operation signal, thereby achieving a faster water discharge process.

[0072] Therefore, the control unit 600 can determine whether the water outlet operation signal corresponds to the preset recovery conditions. When the water outlet operation signal corresponds to the recovery conditions, the flow path switching valve 410 is operated to execute the first water outlet mode. When the water outlet operation signal does not correspond to the recovery conditions, the flow path switching valve 410 is operated to execute the second water outlet mode, which discharges cold water or hot water together with the water stored in the water outlet pipeline 300.

[0073] At this point, the recovery conditions can include a first condition and a second condition. The first condition concerns whether the time interval between the current water outlet operation signal and the previous water outlet operation signal is greater than a reference time. The second condition concerns whether the cold / hot water type selected from the current water outlet operation signal is different from the cold / hot water type selected from the previous water outlet operation signal. The reference time can be set in various ways according to the user's needs, such as 3 minutes, 5 minutes, etc.

[0074] Reference Figure 5 When a water discharge operation signal is generated (S10), it is determined whether the water discharge operation signal corresponds to the first condition (S20). If it corresponds to the first condition, that is, the time difference between the time point of the previous water discharge process and the time point of the current water discharge operation signal exceeds a reference time (e.g., 5 minutes), the first water discharge mode for recovering residual water is executed (S40). If it does not correspond to the first condition, that is, the time difference between the time point of the previous water discharge process and the time point of the current water discharge operation signal is within the reference time, it is determined whether it corresponds to the second condition (S30). If it corresponds to the second condition, that is, the previous water discharge operation signal is cold water discharge, and the current water discharge operation signal is hot water discharge, thus the types of water discharged, i.e., the temperatures of the discharged water, are different, the first water discharge mode for recovering residual water is executed (S40). When it does not correspond to the second condition, that is, when the previous water outlet operation signal is cold water outlet and the current water outlet operation signal is also cold water outlet, and the water outlet type, that is, the temperature of the discharged water, is the same, the second water outlet mode (S50) is executed, which allows cold water or hot water to be discharged together with the residual water without residual water recovery.

[0075] In summary, when the water output process is repeated within a short period of time, the residual water temperature in the outlet pipe 300 will not drop to room temperature and will remain in a cold or hot water state. Therefore, in this case, cold or hot water can be output without residual water recovery. However, even if the water output process is repeated within a short period of time, if the types of water output in the previous and current outputs are different, such as cold water and hot water, for example, if the residual water in the outlet pipe 300 is the previous output water (cold water) and the current output water is hot water, then hot water can be output after the residual water is recovered.

[0076] With this control method, cold and hot water can be dispensed at accurate temperatures at all times. Depending on the situation, cold or hot water can be dispensed quickly without the need for residual water recycling. Even under these conditions, cold and hot water can be dispensed at accurate temperatures.

[0077] Figure 6 This is a diagram conceptually illustrating the overall flow path structure of a water dispenser according to another embodiment of the present invention.

[0078] like Figure 6 As shown, a vent 222 is formed on the top of the second water tank 220 to release the internal pressure of the second water tank 220. In the second water tank 220, the water is heated, which increases the internal pressure and may cause the water to boil and overflow. Therefore, to prevent this, a separate vent line 500 is connected to the vent 222.

[0079] One end of the vent pipe 500 is connected to the vent 222, and the other end is connected to the first water tank 210. Therefore, the steam in the second water tank 220 is like... Figure 6 As indicated by the dashed arrow at the midpoint, water flows into the first water tank 210 along the venting line 500, while the second water tank 220 maintains a stable pressure. At this time, the venting line 500 can be connected to the recovery line 400 via a connector, thus functioning as a single line connected to the first water tank 210. Alternatively, separate lines can be used to connect to the first water tank 210.

[0080] In one embodiment of this utility model, an on / off valve 510 can be installed on the vent line 500. The on / off valve 510 can be operated and controlled by the control unit 600 to remain open under normal conditions, and to be closed only when hot water is flowing out.

[0081] That is, when a hot water output signal is generated, the control unit 600 can operate the second supply pump 221 to work while simultaneously operating the on / off valve 510 to close.

[0082] As mentioned above, the second supply pump 221 is installed on the connecting pipeline 230 connecting the first water tank 210 and the second water tank 220. Water is supplied from the first water tank 210 to the second water tank 220 through the second supply pump 221, and water from the second water tank 220 is supplied to the outlet valve 130 through the outlet pipeline 300 using the pumping pressure of the second supply pump 221.

[0083] During this hot water dispensing process, when the vent pipe 500 is open, water from the second water tank 220 can be discharged through the vent pipe 500 instead of being supplied through the hot water outlet pipe 320. In particular, since the outlet valve 130 is positioned higher than the first water tank 210, this may exacerbate the phenomenon of hot water being discharged through the vent pipe 500.

[0084] Therefore, in one embodiment of this utility model, by installing an on / off valve 510 on the vent line 500 and closing the on / off valve 510 when the second supply pump 221 is working, water from the second water tank 220 is prevented from being discharged into the vent line 500, and water can be smoothly and stably discharged through the hot water outlet line 320.

[0085] The above description is merely an exemplary illustration of the technical concept of this utility model. Those skilled in the art will be able to make various modifications and variations without departing from the essential characteristics of this utility model. Therefore, the embodiments disclosed in this utility model are not intended to limit the technical concept of this utility model but are used for illustration, and the scope of the technical concept of this utility model is not limited by these embodiments. The protection scope of this utility model should be interpreted by the following claims, and all technical concepts falling within its equivalent scope should be interpreted as falling within the scope of the rights of this utility model.

Claims

1. A water dispenser, characterized in that, include: The water outlet pipeline flows from the first or second water tank located in the housing of the water dispenser to the water outlet valve. The recycling pipeline has one end connected to the outlet pipeline and the other end connected to the first water tank or the second water tank. A flow path switching valve, installed at the connection between the recovery pipeline and the outlet pipeline, switches the flow path of water supplied through the outlet pipeline to either the recovery pipeline or the outlet cockpit; and The control unit controls the operation of the flow path switching valve. The first water tank and the second water tank store water at different temperatures.

2. The water dispenser according to claim 1, characterized in that, One end of the recovery pipeline is connected to a position adjacent to the outlet valve in the overall section of the outlet pipeline.

3. The water dispenser according to claim 1, characterized in that, The shell body is shaped to allow a bucket to be inserted into it. The first water tank is configured within the interior space of the housing body to allow water to flow in from a bucket inserted into the housing body. The second water tank is connected to the first water tank via a connecting pipeline in a manner that allows water stored in the first water tank to flow in.

4. The water dispenser according to claim 3, characterized in that, It also includes a conduit that protrudes upward from the housing body and has the water outlet valve formed at its upper end in a position higher than the water tank.

5. The water dispenser according to claim 4, characterized in that, The water outlet pipeline is designed to allow water to flow through the water outlet valve, with its lower end connected to the first water tank and the second water tank respectively, and its upper end connected to the water outlet valve.

6. The water dispenser according to claim 4, characterized in that, The water dispenser also includes a first supply pump and a second supply pump, which operate to supply water from the first water tank and the second water tank respectively through the water outlet pipeline. The control unit operates and controls the first supply pump and the second supply pump according to the user's water outlet operation signal.

7. The water dispenser according to claim 1, characterized in that, The control unit controls the water to flow from the first water tank or the second water tank to the outlet valve according to the water outlet operation signal generated by the user, and controls the flow path switching valve to switch the water flow path to the recovery pipeline or the outlet valve during the water outlet process.

8. The water dispenser according to claim 7, characterized in that, When a user generates a water dispensing operation signal, the control unit controls the operation of the flow path switching valve to perform a first water dispensing mode, dispensing water from the first water tank or the second water tank to the water dispensing valve after recovering the water stored in the water dispensing line through the recovery line.

9. The water dispenser according to claim 8, characterized in that, The control unit operates in the first water outlet mode by directing the flow path switching valve toward the recycling pipeline within a preset recycling time, and then directing the flow path switching valve toward the water outlet valve after the recycling time.

10. The water dispenser according to claim 8, characterized in that, The control unit determines whether the water outlet operation signal corresponds to the preset recovery conditions. When the water discharge operation signal corresponds to the recovery condition, the control unit controls the flow path switching valve to execute the first water discharge mode. When the water discharge operation signal does not correspond to the recycling condition, the control unit controls the operation of the flow path switching valve to perform a second water discharge mode, in which water from the first water tank or the second water tank is discharged together with water stored on the water discharge pipeline.

11. The water dispenser according to claim 10, characterized in that, The recovery conditions include a first condition regarding whether the time interval between the generation of the current water discharge operation signal and the previous water discharge operation signal is greater than a reference time. When the water discharge operation signal corresponds to the first condition, the control unit operates to execute the first water discharge mode.

12. The water dispenser according to claim 11, characterized in that, The recovery conditions also include a second condition regarding whether the temperature of the water discharged according to the current water discharge operation signal is different from that of the water discharged according to the previous water discharge operation signal. When the water outlet operation signal does not correspond to the first condition, the control unit determines whether it corresponds to the second condition. When it corresponds to the second condition, the flow path switching valve is controlled to execute the first water outlet mode.

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