Cold and hot water unit and water purification system

Abstract

The utility model discloses a water chiller-heater unit and a water purification system. The water chiller-heater unit comprises a water inlet valve, a hot water pipeline, a cold water pipeline, a water storage tank and a water outlet valve. The hot water pipeline and the cold water pipeline are connected to a water inlet of the water storage tank; the hot water pipeline comprises a hot water valve, a heating module and a first temperature monitor which are sequentially arranged between the water inlet valve and the water storage tank; the cold water pipeline comprises a cold water valve, a refrigeration module and a second temperature monitor which are sequentially arranged between the water inlet valve and the water storage tank; a water outlet of the water storage tank is connected with a water outlet valve; when the water chiller-heater unit is in a hot water mode, the water storage tank is used for storing hot water flowing in from the hot water pipeline; when the water chiller-heater unit is in the cold water mode, the water storage tank is used for storing cold water flowing into the cold water pipeline. While different requirements for water temperature in different seasons can be met, the occupied space of the cold and hot water unit is reduced, the cost is saved, in addition, the refrigeration module and the heating module are separated from the water storage tank, and the heat preservation effect of the water storage tank is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to a cold and hot water unit and a water purification system. BACKGROUND

[0002] Traditional cold and hot water units mostly adopt the mode of hot water tanks, the bottom of the hot water tank is heated by a heating disc, cold water enters the hot water tank, the water is boiled by the heating disc, and then is stored in the hot water tank for use by the user. The hot water tank and the cold water tank on the market are independent, two tanks exist in one unit, the volume is large, the heat preservation effect is poor, and the cost is high. CONTENT OF THE INVENTION

[0003] The present application provides a cold and hot water unit and a water purification system, which shares one water storage tank for hot water pipeline and cold water pipeline, meets different water temperature requirements in different seasons, reduces the occupied space of the cold and hot water unit, improves the heat preservation effect, and saves cost.

[0004] In one aspect, the present application provides a cold and hot water unit, comprising a water inlet valve, a hot water pipeline, a cold water pipeline, a water storage tank and a water outlet valve;

[0005] The hot water pipeline and the cold water pipeline are connected in parallel between the water inlet valve and the water storage tank;

[0006] The hot water pipeline and the cold water pipeline are both connected to the water inlet of the water storage tank;

[0007] The hot water pipeline comprises a hot water valve, a heating module and a first temperature monitor;

[0008] The cold water pipeline comprises a cold water valve, a refrigeration module and a second temperature monitor;

[0009] The water outlet valve is arranged at the water outlet of the water storage tank;

[0010] When the cold and hot water unit is in hot water mode, the water storage tank is used to store hot water flowing from the hot water pipeline;

[0011] When the cold and hot water unit is in cold water mode, the water storage tank is used to store cold water flowing from the cold water pipeline.

[0012] Preferably, a third temperature monitor arranged between the water outlet of the hot water valve and the water inlet of the heating module, a fourth temperature monitor and a water pump arranged between the water outlet of the water storage tank and the water inlet of the water outlet valve in sequence are further included, the third temperature monitor is used to detect the temperature of water flow at the water outlet of the water inlet valve, the water pump is used to pump out water in the water storage tank, and the fourth temperature monitor is used to detect the temperature of water flow at the water outlet of the water storage tank.

[0013] Preferably, the hot water pipeline further comprises a hot water backflow valve, a water inlet of the hot water backflow valve is connected to the first water outlet of the water pump, and a water outlet of the hot water backflow valve is connected to a water inlet of the third temperature monitor.

[0014] Preferably, the cold water pipeline further comprises a cold water backflow valve, a water inlet of the cold water backflow valve is connected to the second water outlet of the water pump, and a water outlet of the cold water backflow valve is connected to a water inlet of the refrigeration module.

[0015] Preferably, the hot water pipeline further comprises a water storage valve and a rapid heating water outlet pipeline, the water storage valve is arranged between the first temperature monitor and the water storage tank, and the rapid heating water outlet pipeline comprises a hot water outlet valve connected to a water outlet of the first temperature monitor and a hot water outlet.

[0016] Preferably, the water storage tank is a vacuum storage tank, and a material of the water storage tank comprises a stainless steel material.

[0017] Preferably, the water storage tank comprises an exhaust valve, and the exhaust valve is arranged at a top end of the water storage tank.

[0018] Preferably, the water storage tank further comprises a high water level probe, and the high water level probe is arranged at the top end of the water storage tank.

[0019] Preferably, the water storage tank further comprises a drain valve, and the drain valve is arranged at a bottom of the water storage tank.

[0020] In another aspect, the application provides a water purification system comprising the cold and hot water unit as described above.

[0021] The cold and hot water unit and the water purification system provided by the application have the following beneficial effects:

[0022] By sharing one water storage tank through the hot water pipeline and the cold water pipeline, when the cold and hot water unit is in a hot water mode, the water storage tank is used to store hot water flowing in through the hot water pipeline, and when the cold and hot water unit is in a cold water mode, the water storage tank is used to store cold water flowing in through the cold water pipeline, thereby meeting the demand for different water temperatures in different seasons, reducing the occupied space of the cold and hot water unit, saving costs, and improving the heat preservation effect of the water storage tank by arranging the refrigeration module and the heating module separately from the water storage tank. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0024] Figure 1 A structure schematic diagram of a hot and cold water unit provided by an embodiment of the present application is shown in the figure.

[0025] Figure 2 A structure schematic diagram of a hot and cold water unit provided by an embodiment of the present application is shown in the figure.

[0026] The following is a supplementary description of the drawings:

[0027] 1, water inlet valve; 2, water storage tank; 3, water outlet valve; 4, hot water valve; 5, heating module; 6, first temperature monitor; 7, cold water valve; 8, refrigeration module; 9, second temperature monitor; 10, third temperature monitor; 11, fourth temperature monitor; 12, water pump; 13, hot water backflow valve; 14, cold water backflow valve; 15, water storage valve; 16, hot water outlet valve; 21, exhaust valve; 22, high water level probe; 23, drain valve; DETAILED DESCRIPTION

[0028] In order to make the person skilled in the art better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor fall within the scope of protection of the present application.

[0029] The term "one embodiment" or "an embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one implementation of the present application. In the description of the application, it should be understood that the terms "upper", "lower", "top", "bottom", etc. indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" can be explicitly or implicitly included one or more of the features. Moreover, the terms "first", "second" and the like are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0030] Please refer to Figure 1 and Figure 2 ,Figure 1 A cold and hot water unit provided by an embodiment of the present application comprises a water inlet valve 1, a hot water pipeline, a cold water pipeline, a water storage tank 2 and a water outlet valve 3.

[0031] The hot water pipeline and the cold water pipeline are connected in parallel between the water inlet valve 1 and the water storage tank 2.

[0032] The hot water pipeline and the cold water pipeline are both connected to the water inlet of the water storage tank 2.

[0033] The hot water pipeline comprises a hot water valve 4, a heating module 5 and a first temperature monitor 6.

[0034] The cold water pipeline comprises a cold water valve 7, a refrigeration module 8 and a second temperature monitor 9.

[0035] The water outlet valve 3 is arranged at the water outlet of the water storage tank 2.

[0036] When the cold and hot water unit is in the hot water mode, the water storage tank 2 is used to store hot water flowing from the hot water pipeline.

[0037] When the cold and hot water unit is in the cold water mode, the water storage tank 2 is used to store cold water flowing from the cold water pipeline.

[0038] The water inlet of the water inlet valve 1 can be connected to the water outlet of a water purifying device, the water outlet of the water inlet valve 1 comprises a first water outlet pipeline and a second water outlet pipeline, the first water outlet pipeline of the water inlet valve 1 is connected to the hot water pipeline, and the second water outlet pipeline of the water inlet valve 1 is connected to the cold water pipeline.

[0039] The cold and hot water unit further comprises a control module, which is used to control the switching between the hot water mode and the cold water mode of the cold and hot water unit.

[0040] In some embodiments, the water inlet valve 1, the hot water valve 4 and the cold water valve 7 can be solenoid valves, the heating module comprises an electric heating wire or a PTC ceramic heater, the refrigeration module comprises a compressor, a condenser, an expansion valve and an evaporator, the refrigeration module 8 can reduce the water temperature to a preset cold water temperature range, and the preset cold water temperature range comprises 0-15 degrees.

[0041] In some embodiments, the hot water pipeline comprises a hot water valve 4, a heating module 5 and a first temperature monitor 6; the first water outlet pipeline of the water inlet valve 1 is connected to the water inlet of the hot water valve 4, the water outlet of the hot water valve 4 is connected to the water inlet of the heating module 5, the water outlet of the heating module 5 is connected to the water inlet of the first temperature monitor 6, and the water outlet of the first temperature monitor 6 is connected to the first water inlet of the water storage tank 2. The cold water pipeline comprises a cold water valve 7, a refrigeration module 8 and a second temperature monitor 9; the second water outlet pipeline of the water inlet valve 1 is connected to the water inlet of the cold water valve 7, the water outlet of the cold water valve 7 is connected to the water inlet of the refrigeration module 8, the water outlet of the refrigeration module 8 is connected to the water inlet of the second temperature monitor 9, and the water outlet of the second temperature monitor 9 is connected to the second water inlet of the water storage tank 2. The first water inlet of the water storage tank 2 and the second water inlet of the water storage tank 2 can be the same water inlet or different water inlets, which is not limited herein.

[0042] When the control module receives the control instruction of the hot water mode, the control module controls the cold water valve 7 to be closed, the hot water valve 4 to be opened, the water inlet valve 1 to be opened, the heating module 5 to be turned on and the refrigeration module 8 to be controlled to be closed. The water flow enters the hot water valve 4 and the heating module 5 through the water inlet valve 1, is heated to the first preset temperature by the heating module 5, and then enters the water storage tank 2 through the first temperature monitor 6. The first temperature monitor 6 detects whether the water temperature is the first preset temperature. If the water temperature is the first preset temperature, the original heating power is maintained. If the water temperature is less than the first preset temperature, the heating power is increased. If the water temperature is greater than the first preset temperature, the heating power is decreased.

[0043] When the control module receives the control instruction of the cold water mode, the control module controls the cold water valve 7 to be turned on, the hot water valve 4 to be closed, the water inlet valve 1 to be opened, the heating module 5 to be closed and the refrigeration module 8 to be controlled to be turned on. The water flow enters the cold water valve 7 and the refrigeration module 8 through the water inlet valve 1, is cooled to the second preset temperature by the refrigeration module 8, and then enters the water storage tank 2 through the second temperature monitor 9. The second temperature monitor 9 detects whether the water temperature is the second preset temperature. If the water temperature is the second preset temperature, the original refrigeration power is maintained. If the water temperature is less than the second preset temperature, the refrigeration power is decreased. If the water temperature is greater than the second preset temperature, the refrigeration power is increased.

[0044] In some embodiments, the first temperature monitor 6 and the second temperature monitor 9 can be temperature sensors. The heating module 5 has a large power, which is adjustable. Increasing the power of the heating module 5 can quickly boil the water, and the boiled water can be poured into the water storage tank 2.

[0045] The above technical scheme, the hot water pipeline and the cold water pipeline share one water storage tank 2, in winter, users generally do not need cold water, the demand for cold water is small, the demand for hot water is greatly increased, at this time, the cold and hot water unit can be set to hot water mode; in summer, the demand for hot water is small, and the demand for cold water is greatly increased, at this time, the cold and hot water unit can be set to cold water mode; the demand for different water temperatures in different seasons is met, the occupied space of the cold and hot water unit is reduced, and the cost is saved, in addition, the refrigeration module and the heating module are arranged separately from the water storage tank, and the heat preservation effect of the water storage tank is improved.

[0046] Please refer to Figure 2 In some embodiments, a third temperature monitor 10 is arranged between the water outlet of the hot water valve 4 and the water inlet of the heating module 5, and a fourth temperature monitor 11 and a water pump 12 are arranged in sequence between the water outlet of the water storage tank 2 and the water inlet of the water outlet valve 3, the third temperature monitor 10 is used to detect the temperature of the water flow at the water outlet of the water inlet valve 1, the water pump 12 is used to pump out the water in the water storage tank 2, and the fourth temperature monitor 11 is used to detect the temperature of the water flow at the water outlet of the water storage tank 2.

[0047] The cold and hot water unit further comprises a third temperature monitor 10, which can detect the water temperature of the water flow of the water inlet valve 1, and control the power of the heating module 5 according to the water temperature detected by the third temperature monitor 10 and the temperature set by the control module.

[0048] The water outlet of the water storage tank 2 is connected to the water inlet of the fourth temperature monitor 11, the water outlet of the fourth temperature monitor 11 is connected to the water inlet of the water pump 12, and the water outlet of the water pump 12 is connected to the water inlet of the water outlet valve 3. The water pump 12 is used to pump out the water in the water storage tank 2, and after the water outlet valve 3 is opened, the hot water flows out to be used by the user, and has the functions of large flow and adjustable flow.

[0049] In some embodiments, the water pump 12 comprises a centrifugal pump, and the water pump 12 can perform reverse pumping, so that in the hot water mode, the water outside the water outlet of the water storage tank 2 can be pumped back into the water storage tank 2, and in the cold water mode, the water outside the water outlet of the water storage tank 2 can also be pumped back into the water storage tank 2, so as to avoid the growth of bacteria in the pipeline. The third temperature monitor 10 and the fourth temperature monitor 11 can be temperature sensors.

[0050] The above technical scheme uses the third temperature monitor 10 to detect the temperature of the water flow of the water inlet valve 1, so as to control the power of the heating module 5, so that the water temperature can quickly meet the user's demand. The water pump 12 is used to pump out the water in the water storage tank 2 for the user to use, and the fourth temperature monitor 11 detects the water temperature of the water storage tank 2, which is convenient for the user to use.

[0051] In some embodiments, the hot water pipeline further comprises a hot water return valve 13, the water inlet of the hot water return valve 13 is connected to the first water outlet of the water pump 12, and the water outlet of the hot water return valve 13 is connected to the water inlet of the third temperature monitor 10.

[0052] The hot water return valve 13 is used to control the water flow from the water storage tank 2 to re-enter the heating module 5 in the circulating heating mode, return the hot water, and reheat.

[0053] In some embodiments, when the cold and hot water unit is in the hot water mode, the fourth temperature monitor 11 detects that the outlet water temperature of the water storage tank 2 does not meet the first preset temperature, the control module opens the hot water return valve 13 and closes the outlet water valve 3, so that the water flow re-enters the heating module 5 through the hot water return valve 13 for re-heating until the outlet water temperature meets the first preset temperature.

[0054] The above technical solution can reheat the hot water at the outlet of the water storage tank 2 when the hot water does not meet the user's demand, thereby meeting the user's demand for hot water temperature.

[0055] In some embodiments, the cold water pipeline further comprises a cold water return valve 14, the water inlet of the cold water return valve 14 is connected to the second water outlet of the water pump 12, and the water outlet of the cold water return valve 14 is connected to the water inlet of the refrigeration module 8.

[0056] The cold water return valve 14 is used to control the water flow from the water storage tank 2 to re-enter the refrigeration module 8 in the circulating refrigeration mode, return the cold water, and re-refrigerate.

[0057] In some embodiments, the hot water return valve 13 and the cold water return valve 14 can be solenoid valves.

[0058] In some embodiments, when the cold and hot water unit is in the cold water mode, the fourth temperature monitor 11 detects that the outlet water temperature of the water storage tank 2 does not meet the second preset temperature, the control module opens the cold water return valve 14 and closes the outlet water valve 3, so that the water flow re-enters the refrigeration module 8 through the cold water return valve 14 for re-refrigeration until the outlet water temperature meets the second preset temperature.

[0059] The above technical solution can re-refrigerate the cold water at the outlet of the water storage tank 2 when the cold water does not meet the user's demand, thereby meeting the user's demand for cold water temperature.

[0060] In some embodiments, the hot water pipeline further comprises a water storage valve 15 and a quick heating outlet water pipeline, the water storage valve 15 is arranged between the first temperature monitor 6 and the water storage tank 2, and the quick heating outlet water pipeline comprises a hot water outlet valve 16 connected to the water outlet of the first temperature monitor 6 and a hot water outlet.

[0061] In some embodiments, the water inlet of the water storage valve 15 is connected to the first water outlet of the first temperature monitor 6, and the water outlet of the water storage valve 15 is connected to the first water inlet of the water storage tank 2. The fast heating water outlet pipeline comprises a hot water outlet valve 16 and a hot water outlet, the water inlet of the hot water outlet valve 16 is connected to the second water outlet of the first temperature monitor 6, and the first water outlet of the first temperature monitor 6 and the second water outlet of the first temperature monitor 6 are different water outlets. The heating module can be a fast heating module, which is a high-power heating device capable of rapidly heating the water flow passing through it. The water outlet of the hot water outlet valve 16 is connected to the water inlet of the hot water outlet, and the hot water outlet is used by the user to heat water, which belongs to an instant hot water outlet.

[0062] In some embodiments, when the cold and hot water unit needs to be switched to hot water mode, the control module closes the cold water valve 7, the refrigeration module 8, the hot water outlet valve 16 and the hot water return valve 13, and opens the water inlet valve 1, the hot water valve 4 and the heating module 5. The water flow enters the hot water valve 4 and the heating module 5 through the water inlet valve 1, is heated to a first preset temperature by the heating module 5, and then enters the water storage tank 2 through the first temperature monitor 6. The first temperature monitor 6 detects whether the water temperature is the first preset temperature. If it is the first preset temperature, the original heating power is maintained, if it is less than the first preset temperature, the heating power is increased, and if it is greater than the first preset temperature, the heating power is reduced. If the user has a hot water demand, the water pump 12 and the water outlet valve 3 are opened, and the hot water in the water storage tank 2 is pumped out to supply the user with water. After the user finishes using the hot water, a predetermined standby time is set, and then the hot water pipeline is opened, so that the cold and hot water unit can supplement the hot water in the water storage tank 2. If the fourth temperature monitor 11 detects that the hot water flowing out of the water storage tank 2 does not meet the third preset temperature, the water outlet valve 3 is closed, the water pump 12, the hot water return valve 13 and the heating module 5 are opened, and the circulation heating is performed until the fourth temperature monitor 11 detects that the water temperature is the third preset temperature, and the return heating is stopped. The first preset temperature can be 100 degrees, and the third preset temperature can be 97 degrees.

[0063] In some embodiments, when the cold-hot water unit needs to switch to cold water mode, the second water inlet of the water storage tank 2 and the first water inlet of the water storage tank 2 are different water inlets, the control module closes the hot water valve 4, the heating module 5 and the cold water backflow valve 14, and opens the water inlet valve 1, the cold water valve 7 and the refrigeration module 8. The water flow enters the cold water valve 7 and the refrigeration module 8 through the water inlet valve 1, and after being refrigerated to the second preset temperature by the refrigeration module 8, it enters the water storage tank 2 through the second temperature monitor 9. The first temperature monitor detects whether the water temperature is the second preset temperature. If it is the second preset temperature, the original refrigeration power is maintained. If it is less than the second preset temperature, the refrigeration power is reduced. If it is greater than the second preset temperature, the refrigeration power is increased. If the user has a cold water demand, the cold water pipeline can be temporarily closed, the water pump 12 and the water outlet valve 3 are opened, and the cold water in the water storage tank 2 is pumped out to supply the user with water. After the user finishes using the cold water, the cold water pipeline is opened again after a preset standby time, so that the cold-hot water unit can supplement the cold water in the water storage tank 2.

[0064] If the hot water valve 4 is opened, the third temperature monitor 10 can detect the water temperature of the water flow of the water inlet valve 1, and control the power of the refrigeration module 8 according to the water temperature detected by the third temperature monitor 10 and the temperature set by the control module. If the fourth temperature monitor 11 detects that the cold water flowing out of the water storage tank 2 does not meet the fourth preset temperature, the water outlet valve 3 is closed, the water pump 12, the cold water backflow valve 14 and the refrigeration module 8 are opened, and the circulating refrigeration is carried out until the fourth temperature monitor 11 detects that the water temperature is the fourth preset temperature, and the backflow refrigeration is stopped. The second preset temperature can be 5 degrees, and the fourth preset temperature can be 8 degrees.

[0065] In this cold water mode, when the user needs hot water, the water storage valve 15 is closed, the hot water valve 4, the heating module 5 and the hot water outlet valve 3 are opened, and the rapid heating module 5 can be a rapid heating module. The water flow can be quickly heated after passing through the rapid heating module, and the hot water flows through the rapid heating outlet pipeline to supply the user, so that the user can use cold water and hot water at the same time.

[0066] In another embodiment, the second water inlet of the water storage tank 2 and the first water inlet of the water storage tank 2 are the same water inlet, i.e. the water inlets of the water storage valve 15 are connected to the hot water pipeline and the cold water pipeline. At this time, in the cold water mode, when the user needs hot water, the cold water valve 7, the refrigeration module 8 and the water storage valve 15 are temporarily closed, and the hot water valve 4, the heating module 5 and the hot water outlet valve 16 are opened, so that the hot water can flow out of the hot water outlet to supply the user. When the cold-hot water unit is in cold water mode, the water storage tank 2 contains cold water, so when the user needs hot water, the cold water pipeline can be temporarily closed to meet the user's demand for hot water, and at the same time the cold water in the water storage tank 2 also meets the user's demand for cold water. After the user finishes using the hot water, the cold water pipeline is opened again after a preset standby time, so that the cold-hot water unit can supplement the cold water in the water storage tank 2.

[0067] The above technical scheme can meet the needs of users for cold water and hot water at the same time, the cold water pipeline and the hot water pipeline can meet the needs of users for large-flow cold water and large-flow hot water respectively, and the rapid hot water outlet pipeline can meet the needs of users for small-flow hot water.

[0068] In some embodiments, the water storage tank 2 is a vacuum storage tank, and the material of the water storage tank 2 includes stainless steel material.

[0069] The water storage tank 2 is separately arranged from the refrigeration module 8 and the heating module 5, so that the water storage tank 2 can be arranged as a vacuum storage tank. The tank body of the water storage tank 2 is vacuumized, the inner layer stores water, and a vacuum interlayer is formed between the outer layer and the inner layer. The material of the water storage tank 2 can be selected from stainless steel material.

[0070] The above technical scheme arranges the water storage tank 2 as a vacuum storage tank and selects stainless steel material, which greatly improves the heat preservation effect of the water storage tank 2 and improves the corrosion resistance of the tank body.

[0071] In some embodiments, the water storage tank 2 includes an exhaust valve 21 arranged at the top end of the water storage tank 2.

[0072] The exhaust valve 21 is used to exhaust air in the water storage tank 2. The exhaust valve 21 can be an electromagnetic valve.

[0073] In some embodiments, when hot water or cold water is injected into the water storage tank 2, and cold water or hot water is discharged, the exhaust valve 21 is opened to exhaust air in the tank, balance the atmospheric pressure, and ensure that water can be smoothly injected or discharged.

[0074] The above technical scheme ensures that the water storage tank 2 can be smoothly injected with water or discharged by arranging the exhaust valve 21 at the top of the water storage tank 2.

[0075] In some embodiments, the water storage tank 2 further includes a high water level probe 22 arranged at the top end of the water storage tank 2.

[0076] The high water level probe 22 is used to detect whether the water in the water storage tank 2 is full.

[0077] In some embodiments, when the cold and hot water unit is in hot water mode and the hot water pipeline is running, the high water level probe 22 detects that the water level in the water storage tank 2 is high enough to control the water flow of the hot water pipeline to be closed to stop the water flow to continue to be injected into the water storage tank 2. When the cold and hot water unit is in cold water mode and the cold water pipeline is running, the high water level probe 22 detects that the water level in the water storage tank 2 is high enough to control the water flow of the cold water pipeline to be closed to stop the water flow to continue to be injected into the water storage tank 2.

[0078] The above technical scheme reasonably controls the water flow injection of the water storage tank 2 by arranging the high water level probe 22 at the top of the water storage tank 2, so as to avoid water overflow or system failure.

[0079] In some embodiments, the water storage tank 2 further comprises a drain valve 23 arranged at the bottom of the water storage tank 2.

[0080] The drain valve 23 is used to drain the water in the water storage tank 2.

[0081] In some embodiments, the user can connect the control module through the mobile phone application to set whether the water storage tank 2 stores hot water or cold water, and can choose to switch immediately or switch energy-savingly. If the water storage tank 2 stores cold water, when the user needs hot water and chooses to switch immediately, the circulating heating mode is started, i.e. the hot water return valve 13 and the water pump 12 are opened, and the water in the water storage tank 2 is heated to a preset temperature. If the water storage tank 2 stores hot water, when the user needs cold water and chooses to switch immediately, the drain valve 23 of the water storage tank 2 is opened to drain the hot water, and after the hot water is drained, the cold water pipeline is opened to cool and store the water in the water storage tank 2.

[0082] If the water storage tank 2 stores cold water, when the user needs hot water and chooses to switch energy-savingly, the cold water pipeline is closed, the input of cold water into the water storage tank 2 is stopped, and within a preset time, the user uses cold water until the cold water is used up, and then the hot water pipeline is opened to heat and store the water in the water storage tank 2. If the preset time is exceeded and the cold water in the water storage tank 2 is not used up, the circulating heating mode is started, i.e. the hot water return valve 13 and the water pump 12 are opened, and the water in the water storage tank 2 is heated to a preset temperature.

[0083] If the water storage tank 2 stores hot water, when the user needs cold water and chooses to switch energy-savingly, the hot water pipeline is closed, the input of hot water into the water storage tank 2 is stopped, and within a preset time, the user uses cold water until the cold water is used up, and then the cold water pipeline is opened to cool and store the water in the water storage tank 2. If the preset time is exceeded and the hot water in the water storage tank 2 is not used up, the drain valve 23 of the water storage tank 2 is opened to drain the hot water, and after the hot water is drained, the cold water pipeline is opened to cool and store the water in the water storage tank 2.

[0084] In some embodiments, the hot and cold water unit can also switch intelligently according to the water inlet temperature. When it is detected that the water inlet temperature, i.e. the temperature value monitored by the third temperature monitor 10, is lower than a fifth preset temperature, which can be 15 degrees, after the user takes the cold water, the water in the tank is heated to a sixth preset temperature, which can be 100 degrees, and when the user takes the water, it is prompted that the water in the water storage tank 2 is hot water, and care should be taken to prevent scalding. When it is detected that the water inlet temperature, i.e. the temperature value monitored by the third temperature monitor 10, is greater than a seventh preset temperature, which can be 18 degrees, after the user takes the hot water, the water in the tank is cooled to cold water, and when the user takes the water, it is prompted that the water in the water storage tank 2 is ice water, please drink.

[0085] The water tank 2 is provided with the drain valve 23 at the bottom, so as to facilitate the water in the water tank 2 to be drained.

[0086] In some embodiments, the water tank 2 further comprises a temperature probe for measuring the temperature of the water in the water tank 2. The temperature probe can be arranged at the bottom of the water tank 2.

[0087] In addition, the embodiment of the present application further provides a water purification system, which comprises the cold and hot water unit as above.

[0088] The cold and hot water unit in the embodiment of the present application comprises the cold and hot water unit as above. The water tank 2 is shared by the hot water pipeline and the cold water pipeline. When the cold and hot water unit is in the hot water mode, the water tank 2 is used to store the hot water flowing in from the hot water pipeline; when the cold and hot water unit is in the cold water mode, the water tank 2 is used to store the cold water flowing in from the cold water pipeline. The different water temperature requirements in different seasons are met, the occupied space of the cold and hot water unit is reduced, the cost is saved, and the heat preservation effect of the water tank is improved by arranging the refrigeration module and the heating module separately from the water tank.

[0089] The above is only the preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A cold and hot water unit, characterized in that, The water inlet valve, the hot water pipeline, the cold water pipeline, the water storage tank and the water outlet valve are included. The hot water pipeline and the cold water pipeline are connected in parallel between the water inlet valve and the water storage tank. The hot water pipeline and the cold water pipeline are connected to the water inlet of the water storage tank. The hot water pipeline includes a hot water valve, a heating module and a first temperature monitor. The cold water pipeline includes a cold water valve, a refrigeration module and a second temperature monitor. The water outlet valve is arranged at the water outlet of the water storage tank. When the cold-hot water unit is in the hot water mode, the water storage tank is used to store the hot water flowing from the hot water pipeline. When the cold-hot water unit is in the cold water mode, the water storage tank is used to store the cold water flowing from the cold water pipeline.

2. The hot and cold water unit according to claim 1, characterized in that A third temperature monitor is arranged between the water outlet of the hot water valve and the water inlet of the heating module, and a fourth temperature monitor and a water pump are arranged in sequence between the water outlet of the water storage tank and the water inlet of the water outlet valve, the third temperature monitor is used to detect the temperature of the water flow at the water outlet of the water inlet valve, the water pump is used to pump out the water in the water storage tank, and the fourth temperature monitor is used to detect the temperature of the water flow at the water outlet of the water storage tank.

3. The hot and cold water unit according to claim 2, characterized in that The hot water pipeline further includes a hot water return valve, the water inlet of the hot water return valve is connected to the first water outlet of the water pump, and the water outlet of the hot water return valve is connected to the water inlet of the third temperature monitor.

4. The hot and cold water unit according to claim 2, wherein The cold water pipeline further includes a cold water return valve, the water inlet of the cold water return valve is connected to the second water outlet of the water pump, and the water outlet of the cold water return valve is connected to the water inlet of the refrigeration module.

5. The hot and cold water unit according to claim 1, wherein The hot water pipeline further includes a water storage valve and a rapid heating water outlet pipeline, the water storage valve is arranged between the first temperature monitor and the water storage tank, and the rapid heating water outlet pipeline includes a hot water outlet valve connected to the water outlet of the first temperature monitor and a hot water outlet.

6. The hot and cold water unit according to claim 1, wherein The water storage tank is a vacuum storage tank, and the material of the water storage tank includes stainless steel material.

7. The hot and cold water unit according to claim 1, wherein The water storage tank further includes an exhaust valve arranged at the top end of the water storage tank.

8. The hot and cold water unit according to claim 1, wherein The water storage tank further includes a high water level probe arranged at the top end of the water storage tank.

9. The hot and cold water unit according to claim 1, wherein The water storage tank further includes a drain valve arranged at the bottom of the water storage tank.

10. A water purification system characterized by, The cold-hot water unit according to any one of claims 1-9 is included.

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