Cold and hot water machine

Abstract

The utility model provides a water chiller-heater, which comprises a cold water tank, a water inlet pipe, a water outlet pipe, a water outlet pipe, a water outlet pipe and a water outlet pipe, wherein the cold water tank is arranged inside a shell body of the water chiller-heater; a hot water tank which is disposed inside the housing body and which heats and stores inflow water; a vent line, one end of which is connected to a vent formed in the hot water tank and the other end of which is connected to the cold water tank; an opening / closing valve which is installed on the ventilation line and operates in an opening / closing manner; and a control unit for operating and controlling the operating state of the on-off valve.

Description

Technical Field

[0001] This utility model relates to a hot and cold water heater that improves the stability of hot water output. More specifically, it relates to a hot and cold water heater that improves the stability of hot water output by preventing water from the hot water tank from being discharged into the vent pipe during the hot water output process and guiding it to flow through the hot water output pipe, thereby enabling a smooth and stable hot water output process. Background Technology

[0002] Nowadays, most places, including homes and public administration offices, use hot and cold water dispensers or water purifiers for drinking water.

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

[0004] Such hot and cold water heaters typically include a housing body into which a water tank can be inserted; a cold water tank, located inside the housing body, to cool the water flowing in from the water tank; 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] The water tank of a hot and cold water heater is usually placed on top of the casing in an exposed state. Therefore, problems such as water tank contamination and deterioration of the water inside the tank may occur, as well as a decrease in the aesthetics of the interior space.

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

[0008] In addition, in order to solve such problems, hot and cold water machines of various shapes or structures have been developed recently, but the development level is still low. For example, problems may occur in the hot or cold water output function due to changes in shape or structure.

[0009] Existing technical documents

[0010] Patent documents

[0011] Patent Document 0001: Korean Patent No. 10-1488906 Utility Model Content

[0012] This utility model was conceived to solve the problems existing in the prior art. The purpose of this utility model is to provide a hot and cold water machine, which installs an on / off valve on the vent pipe connected to the hot water tank, and closes the on / off valve during the hot water outlet process to prevent the water in the hot water tank from being discharged into the vent pipe, and guides it to flow through the hot water outlet pipe, thereby enabling a smooth and stable hot water outlet process.

[0013] The technical solution of this utility model for solving the above-mentioned problems is as follows.

[0014] This utility model provides a hot and cold water heater, comprising: a cold water tank disposed inside the housing of the hot and cold water heater, for cooling and storing incoming water; a hot water tank disposed inside the housing, for heating and storing incoming water; a vent pipe, one end of which is connected to a vent formed in the hot water tank, and the other end of which is connected to the cold water tank; an on / off valve installed on the vent pipe and operating in an opening and closing manner; and a control unit that operates and controls the operating state of the on / off valve.

[0015] The control unit operates according to the input water outlet command to close the on / off valve during the period when hot water is outleted from the hot water tank.

[0016] The upper part of the shell body is configured to allow a water bucket to be inserted, from which water flows into the cold water tank.

[0017] The hot water tank is connected to the cold water tank via a connecting pipeline, and water flows from the cold water tank into the hot water tank.

[0018] The hot and cold water machine also includes a conduit that protrudes upward from the housing body and has a water outlet valve at its upper end. The upper end of the conduit is positioned higher than the water tank, and the water outlet valve is formed at the upper end of the conduit and positioned higher than the water tank.

[0019] The hot and cold water heater also includes a cold water supply pump and a hot water supply pump, which operate to discharge cold water and hot water from the cold water tank and hot water tank to the outlet valve, respectively. The control unit operates and controls the cold water supply pump or the hot water supply pump to discharge cold water or hot water according to the outlet operation signal generated by the user, and the operation control is to close the on / off valve during the operation of the hot water supply pump.

[0020] When the water outlet operation signal is a hot water outlet signal, the control unit operates by making the hot water supply pump work, and the operation control is to make the on-off valve close at the start time of the hot water supply pump, or to make the on-off valve close a predetermined time before the start time of the hot water supply pump.

[0021] The control unit operates by causing the on / off valve to open simultaneously with or after a preset delay time when the hot water supply pump completes its operation.

[0022] The control unit operates by ensuring that the on / off valve remains open at all times except when the hot water supply pump is in operation.

[0023] The hot water supply pump is installed on the connecting pipeline between the cold water tank and the hot water tank. The hot water supply pump supplies water from the cold water tank to the hot water tank, and uses the pumping pressure of the hot water supply pump to supply water from the hot water tank to the outlet valve through the outlet pipeline.

[0024] The cold water supply pump is installed on the outlet pipeline connected to the cold water tank, and the pumping pressure of the cold water supply pump supplies water to the outlet valve through the outlet pipeline.

[0025] The effects of this utility model are as follows.

[0026] According to this utility model, the following effects are achieved: by installing an on / off valve on the vent pipe connected to the hot water tank and closing the valve during the hot water outflow process, water from the hot water tank is prevented from being discharged into the vent pipe during the hot water outflow process, and is guided to flow through the hot water outflow pipe, thereby enabling a smooth and stable hot water outflow process.

[0027] Furthermore, it has the following effect: by making the closing time of the on / off valve equal to or earlier than the start time of the hot water supply pump, and making the opening time of the on / off valve equal to or later than the completion time of the hot water supply pump, hot water can be stably delivered throughout the entire period from the start to the completion of the hot water delivery process. Attached Figure Description

[0028] Figure 1 This is a perspective view schematically showing the external appearance of a hot and cold water machine according to an embodiment of the present invention.

[0029] Figure 2 This is a schematic cross-sectional view illustrating the internal structure of a hot and cold water heater according to an embodiment of the present invention.

[0030] Figure 3 This is a diagram conceptually illustrating the overall flow path structure of a hot and cold water heater according to an embodiment of the present invention.

[0031] Figure 4 This is a block diagram schematically illustrating the control-related structure of a hot and cold water machine according to an embodiment of the present invention.

[0032] Figure 5 This is a flowchart illustrating the water outlet control process of a hot and cold water machine according to an embodiment of the present invention.

[0033] Figure 6 This is a diagram conceptually illustrating the overall flow path structure of a hot and cold water heater according to another embodiment of the present invention.

[0034] Figure Labels

[0035] 100: Housing body; 110: Cover; 120: Conduit; 130: Outlet valve; 140: Operating unit; 210: Cold water tank; 211: Cold water supply pump; 220: Hot water tank; 221: Hot water 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

[0036] The specific embodiments for implementing this utility model will now be described in detail with reference to the accompanying drawings.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] Figure 1 This is a perspective view schematically showing the external appearance of a hot and cold water heater according to an embodiment of the present invention. Figure 2 This is a schematic cross-sectional view illustrating the internal structure of a hot and cold water heater according to an embodiment of the present invention. Figure 3 This is a diagram conceptually illustrating the overall flow path structure of a hot and cold water heater according to an embodiment of the present invention.

[0044] In one embodiment of the hot and cold water machine 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 cold water tank 210, a hot water tank 220, a conduit 120, a water outlet line 300, a cold water supply pump 211, a hot water supply pump 221, a vent line 500, an on / off valve 510, and a control unit 600.

[0045] 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.

[0046] 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.

[0047] The cold water tank 210 is configured in the interior space of the housing body 100 such that water flows in from the water tank 10 inserted into the housing body 100. The cold water tank 210 is provided with a separate cooling device (not shown) to cool the water stored inside the cold water tank 210.

[0048] The hot water tank 220 is located below the cold water tank 210 and is connected to the cold water tank 210 via a connecting pipe 230 to allow water stored in the cold water tank 210 to flow in. The hot water tank 220 is equipped with a separate heating device (not shown) to heat the water stored inside. A vent 222 can be formed on the top of the hot water tank 220 to release internal pressure.

[0049] 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.

[0050] 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.

[0051] 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 hot and cold water machine 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.

[0052] 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 cold water tank 210 and the hot water tank 220, and the upper end is connected to the water outlet valve 130. For example, as... Figure 2 and Figure 3As shown, the water outlet pipeline 300 may include: a cold water outlet pipeline 310, one end of which is connected to the cold water tank 210; and a hot water outlet pipeline 320, one end of which is connected to the hot 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.

[0053] 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.

[0054] The housing body 100 is equipped with: a cold water supply pump 211, which operates to supply cold water from the cold water tank 210 through the outlet pipe 300; and a hot water supply pump 221, which operates to supply hot water from the hot water tank 220 through the outlet pipe 300.

[0055] A cold water supply pump 211 is installed on the cold water outlet line 310 of the outlet line 300. Using the pumping pressure of the cold water supply pump 211, water from the cold water tank 210 is supplied to the outlet valve 130 through the outlet line 300. A hot water supply pump 221 can be installed on the connecting line 230 connecting the cold water tank 210 and the hot water tank 220. Water is supplied from the cold water tank 210 to the hot water tank 220 via the hot water supply pump 221, and using the pumping pressure of the hot water supply pump 221, water from the hot water tank 220 is supplied to the outlet valve 130 through the outlet line 300.

[0056] In one embodiment of this invention, the outlet valve 130 is located above the water tank. Therefore, unlike a typical hot and cold water heater, water cannot be discharged from the cold water tank 210 and the hot water tank 220 due to the difference in potential energy. Thus, in one embodiment of this invention, the pumping pressure of the cold water supply pump 211 and the hot water supply pump 221 is used to supply water from the cold water tank 210 and the hot water tank 220 to the outlet valve 130.

[0057] A vent 222 is formed on the top of the hot water tank 220 to release the internal pressure of the hot water tank 220. In the hot 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.

[0058] One end of the vent pipe 500 is connected to the vent 222, and the other end is connected to the cold water tank 210. Therefore, the steam from the hot water tank 220... Figure 3As indicated by the dashed arrow at the midpoint, water flows into the cold water tank 210 along the vent pipe 500, while the hot water tank 220 maintains a stable pressure.

[0059] In one embodiment of this invention, 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 close only when hot water is flowing out. Such an on / off valve 510 can be a NOS (Normal open solenoid) valve that receives an electrical signal and closes under normal open conditions.

[0060] That is, when a hot water supply signal is generated, the control unit 600 can simultaneously control the hot water supply pump 221 to operate and the on / off valve 510 to close.

[0061] As described above, the hot water supply pump 221 is installed on the connecting pipeline 230 connecting the cold water tank 210 and the hot water tank 220. The hot water supply pump 221 supplies water from the cold water tank 210 to the hot water tank 220, and the water in the hot water tank 220 is supplied to the outlet valve 130 through the outlet pipeline 300 by the pumping pressure of the hot water supply pump 221.

[0062] During this hot water dispensing process, when the vent line 500 is open, water from the hot water tank 220 can flow into the vent line 500 and then into the cold water tank 210, instead of being supplied through the hot water outlet line 320. In particular, because the outlet valve 130 is positioned higher than the cold water tank 210, the phenomenon of hot water being discharged through the vent line 500 may be exacerbated during the hot water dispensing process.

[0063] 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 hot water supply pump 221 is working, water from the hot water tank 220 is prevented from being discharged into the vent line 500, and water can be discharged smoothly and stably through the hot water outlet line 320.

[0064] Reference Figure 5Observing the overall water discharge process of this type of hot and cold water heater, firstly, the on / off valve 510 remains open (S10). In this state, when a water discharge operation signal is generated (S20), the control unit 600 operates the cold water supply pump 211 or the hot water supply pump 221 to discharge cold or hot water according to the water discharge operation signal. When the water discharge operation signal is a hot water discharge signal (S30), the operation control is to make the hot water supply pump 221 work, and the operation control is to close the on / off valve 510 during the period when the hot water supply pump 221 is working (S40). When the water discharge operation signal is a cold water discharge signal, the on / off valve 510 does not close, but remains open.

[0065] At this time, the control unit 600 can operate the valve 510 to close simultaneously with the start time of the hot water supply pump 221, or operate the valve 510 to close a predetermined time before the start time of the hot water supply pump 221. The advance time can be set in various ways according to the user's needs, such as 0.5 seconds or 1 second.

[0066] Furthermore, the control unit 600 can operate to ensure that the on / off valve 510 opens simultaneously with the completion of the hot water supply pump 221's operation or after a preset delay time. The delay time can be set in various ways according to user needs, such as 0.5 seconds or 1 second.

[0067] That is, the on / off valve 510 can be operated and controlled to close at a time earlier than or equal to the working time of the hot water supply pump 221, and to open at a time later than or equal to the working completion time of the hot water supply pump 221.

[0068] Thus, the on / off valve 510 closes for a period of time equal to or longer than the working time of the hot water supply pump 221, thereby enabling a smoother and more stable flow of hot water throughout the entire time from the start time to the end time of the hot water supply pump 221.

[0069] Figure 6 This is a diagram conceptually illustrating the overall flow path structure of a hot and cold water heater according to another embodiment of the present invention.

[0070] In one embodiment of the present invention, as described above, the water outlet valve 130 is located at the upper part of the housing body 100 in a position higher than the water tank, so the length of the water outlet pipe 300 connecting the cold water tank 210 and the hot water tank 220 located inside the housing body 100 to the water outlet valve 130 is relatively long.

[0071] 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.

[0072] 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.

[0073] In another embodiment of this utility model, a recovery pipeline 400 and a flow path switching valve 410 are installed so as to prevent residual water from flowing out of the outlet pipeline 300 during such initial water discharge.

[0074] One end of the recovery line 400 is connected to the position adjacent to the outlet valve 130 within the entire section of the outlet line 300, and the other end is connected to the cold water tank 210. In this case, the recovery line 400 can be connected to the vent line 500 via a connector, thus functioning as a single line to the cold water tank 210. Alternatively, it can be connected to the cold water tank 210 via separate lines.

[0075] The flow path switching valve 410 is installed at the connection between the recovery line 400 and the outlet line 300, and operates by switching 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.

[0076] 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 cold water tank 210 through the recovery pipeline 400, and then the cold or hot water is discharged normally after the residual water is recovered.

[0077] 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 6 The residual water recovery path of the initial outlet water pipeline 300 is shown by a dashed line.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] 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.

[0082] 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.

[0083] 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.

[0084] 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.

[0085] For the water discharge process described above, firstly, when a water discharge operation signal is generated, it is determined whether the signal corresponds to a first condition. If it corresponds to the first condition, i.e., the time difference between the time of the previous water discharge process and the time of the current water discharge operation signal exceeds a reference time (e.g., 5 minutes), a first water discharge mode that recovers residual water is executed. If it does not correspond to the first condition, i.e., the time difference between the time of the previous water discharge process and the time of the current water discharge operation signal is within the reference time, it is determined whether it corresponds to a second condition. If it corresponds to the second condition, i.e., the previous water discharge operation signal was for cold water, and the current water discharge operation signal is for hot water, resulting in different water types, a first water discharge mode that recovers residual water is executed. If it does not correspond to the second condition, i.e., the previous water discharge operation signal was for cold water, and the current water discharge operation signal is also for cold water, resulting in the same water type, a second water discharge mode that discharges either cold or hot water along with residual water without residual water recovery is executed.

[0086] 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.

[0087] 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.

[0088] 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 scope of protection of this utility model should be interpreted by the 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 cold and hot water machine, characterized in that, The cold water tank is configured inside the housing body of the hot and cold water machine, and cools and stores the water flowing in. The hot water tank is configured inside the housing body, heats and stores the water flowing in. The vent line is connected at one end to a vent formed in the hot water tank, and at the other end to the cold water tank. The on-off valve is installed on the vent line, and operates in an on-off manner. The control unit operates and controls the on-off valve.

2. The hot and cold water machine according to claim 1, wherein the control unit operates and controls the on-off valve to perform the closing operation during the period in which the hot water in the hot water tank is dispensed according to the water dispensing command input.

3. The hot and cold water machine according to claim 2, wherein the upper surface of the housing body is formed so as to be able to insert a water bucket, The water flows from the water bucket into the cold water tank.

4. The hot and cold water machine according to claim 3, wherein the hot water tank is connected to the cold water tank by a connection line, and the water flows from the cold water tank into the hot water tank.

5. The hot and cold water machine according to claim 3, wherein the hot and cold water machine further comprises a conduit which is configured to protrude upward from the housing body, and a water dispensing cock is formed at the upper end portion, The conduit is formed so that the position of the upper end portion is higher than the water bucket, The water dispensing cock is formed at the upper end portion of the conduit, and is configured at a position higher than the water bucket.

6. The hot and cold water machine according to claim 5, wherein the hot and cold water machine further comprises a cold water supply pump and a hot water supply pump which operate so as to discharge and supply cold water and hot water from the cold water tank and the hot water tank to the water dispensing cock, The control unit operates and controls the cold water supply pump or the hot water supply pump so as to dispense cold water or hot water according to the water dispensing operation signal generated by the user, and operates and controls the on-off valve to perform the closing operation during the period in which the hot water supply pump operates.

7. The hot and cold water machine according to claim 6, wherein when the water dispensing operation signal is a hot water dispensing signal, the control unit operates and controls the hot water supply pump to operate, and operates and controls the on-off valve to perform the closing operation simultaneously at the start time point of the operation of the hot water supply pump, or to perform the closing operation first within a predetermined advance time from the start time point of the operation of the hot water supply pump.

8. The hot and cold water machine according to claim 6, wherein the control unit operates and controls the on-off valve to perform the opening operation simultaneously at the completion time point of the operation of the hot water supply pump, or after a predetermined delay time.

9. The hot and cold water machine according to claim 6, wherein the control unit operates and controls the on-off valve to perform the opening operation at all times except during the operation of the hot water supply pump.

10. The hot and cold water machine according to claim 6, wherein the hot water supply pump is installed on the connection line which connects the cold water tank and the hot water tank, ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ Water is supplied from the cold water tank to the hot water tank by the hot water supply pump, and the water of the hot water tank is supplied to the water outlet cock through a water outlet line using the pumping pressure of the hot water supply pump.

11. The cold and hot water machine according to claim 6, wherein The cold water supply pump is installed on a water outlet line connected to the cold water tank, The water of the cold water tank is supplied to the water outlet cock through the water outlet line using the pumping pressure of the cold water supply pump.

Images