Water purifier

Abstract

The utility model provides a water purifier which comprises a user drinking port, a heating container and a control unit, the water inlet end of the heating container is communicated with a cold water source, the water outlet end of the heating container is communicated with the user drinking port through a water outlet pipeline, and a water return pipeline is further communicated between the heating container and the user drinking port. The water outlet pipeline or the water return pipeline is provided with a first temperature detection device at the user drinking port, the water return pipeline is provided with a first electromagnetic valve, and the water outlet pipeline is provided with a pump. The first temperature detector is used for detecting the temperature of a user drinking port, when the temperature is lower than a preset temperature, the pump on the water outlet pipeline is started, water return power is provided through suction, and water with the too low temperature flows back to the heating container through the water return pipeline to be reheated; even if the water purifier stops for a period of time and is used again, it can be guaranteed that the temperature of the first cup of water flowing out again is not lower than the preset temperature, the warm water use experience of a user is improved, the user does not need to pour the first cup of water, and waste is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of household appliances, in particular to a water purifier. BACKGROUND

[0002] At present, if the water purifier with heating system is not used for a long time, the first cup of water is not hot when it is used again because the temperature is reduced due to the large and long pipeline and long time of non-use, which leads to the waste of water resources as the user will pour away the first cup of water before continuing to draw water. CONTENT OF THE UTILITY MODEL

[0003] The utility model solves the technical problem that the first cup of water is not hot when the water dispenser is used again after stopping for a period of time, which leads to poor water experience or waste of water, and provides a water purifier.

[0004] The utility model solves the above technical problem through the following technical scheme:

[0005] A water purifier comprises a user water inlet, a heating container and a control unit, the water inlet end of the heating container is communicated with a cold water source, the water outlet end of the heating container is communicated with the user water inlet through a water outlet pipeline, a backwater pipeline is further communicated between the heating container and the user water inlet, a first temperature detection device is arranged at the user water inlet of the water outlet pipeline or the backwater pipeline, a first electromagnetic valve is arranged on the backwater pipeline, a pump is arranged on the water outlet pipeline, and the control unit is electrically connected with the heating element of the heating container, the first temperature detection device, the first electromagnetic valve and the pump.

[0006] In the scheme, the temperature of the user water inlet is detected by the first temperature detector, and when the temperature is lower than the preset temperature, the pump on the water outlet pipeline is started to provide backwater power through suction, so that the water with too low temperature is backflowed to the heating container through the backwater pipeline for reheating; the first cup of water after the water purifier is used again can be ensured to have a temperature not lower than the preset temperature, the warm water use experience of the user is improved, the user does not need to pour away the first cup of water, and waste is avoided.

[0007] Preferably, the water purifier further comprises a heat exchanger, a cold water inlet of the heat exchanger being communicated with the cold water source, a cold water outlet of the heat exchanger being communicated with the heating container, a hot water inlet of the heat exchanger being communicated with the water outlet end of the heating container through part of the water outlet pipeline, and a hot water outlet of the heat exchanger being communicated with the user water inlet through part of the water outlet pipeline.

[0008] In the scheme, the cold and hot water can achieve the heat exchange effect of temperature rise or drop in the heat exchanger, which is beneficial to the water outlet speed of warm water and the diversity of water outlet of different temperatures, thereby improving the experience of users using warm water. On the one hand, the cold water enters the heat exchanger from the cold water end, and the cold water is warmed after heat exchange, and the warmed cold water enters the heating container, so that the basic water temperature entering the heating container is not too low, and the heating speed is faster, which is beneficial to the water outlet speed of warm water. On the other hand, the heated hot water enters the heat exchanger from the heating container through the water outlet pipeline, and the hot water is cooled after heat exchange, and the cooled hot water flows to the user water inlet through the water outlet pipeline, so that the user can directly drink the warm water with moderate temperature after receiving the water, which is also beneficial to the water outlet speed of warm water and is convenient for heat exchange of warm water with different temperatures according to the temperature requirement.

[0009] Preferably, a second electromagnetic valve is further arranged on the communication pipeline between the cold water outlet and the heating container, a first check valve is communicated between the second electromagnetic valve and the heating container, and the second electromagnetic valve is electrically connected with the control unit.

[0010] In the scheme, the second electromagnetic valve is arranged on the communication pipeline between the cold water outlet of the heat exchanger and the heating container, can open or close the pipeline to control the flow, and can also control the flow rate of the warmed cold water entering the heating container from the heat exchanger. The first check valve is arranged between the second electromagnetic valve and the heating container, which can ensure the flow direction of water and prevent the water from flowing back to the heat exchanger. The control unit is electrically connected with the second electromagnetic valve, which can control the opening and closing of the second electromagnetic valve.

[0011] Preferably, the heating element of the heating container is an electric heater, the electric heater is electrically connected with an external power supply, and at least part of the electric heater is arranged in the heating container.

[0012] In the scheme, the heating element is an electric heater, and part or all of the electric heater is arranged in the container to directly contact with the cold water, which can not only heat the cold water into hot water, but also play a role in further boiling and disinfection.

[0013] Preferably, at least one water level probe is arranged on the heating container, an end of the at least one water level probe is arranged at the top of the inner cavity of the heating container, and the water level probe is electrically connected with the control unit.

[0014] In the present scheme, one or more water level probes are arranged on the heating container, and the end of at least one of the water level probes is arranged at the top of the inner cavity of the heating container, so as to detect whether the water level in the heating container is too high, and the control unit is connected, and whether water is fed or overflow is controlled through feedback signals.

[0015] Preferably, the water level probe comprises a low water level probe and a high water level probe, the end of the low water level probe extends to the bottom of the inner cavity of the heating container, and the end of the high water level probe is arranged at the top of the inner cavity of the heating container.

[0016] In the present scheme, the water level probe used by the water purifier comprises two different water level probes, the end of the low water level probe extends to the bottom of the inner cavity of the heating container, which can detect whether the water level is too low, and control the low water level in time to avoid dry burning or increase the water inflow; the end of the high water level probe is arranged at the top of the heating container, which can detect whether the water level is too high to control the water inflow or overflow.

[0017] Preferably, the heating container comprises a second temperature detection device, the second temperature detection device is arranged at the bottom of the heating container, and the second temperature detection device is electrically connected with the control unit.

[0018] In the present scheme, the second temperature detection device is used to detect whether the water temperature in the heating container is too low, and the control unit is connected, so that the heating can be started when the detected temperature is too low, so that the water purifier always has hot water reserve; wherein the second temperature detection device is arranged at the bottom of the heating container, so that the temperature can be detected regardless of the water level in the heating container, and errors can be avoided.

[0019] Preferably, the water inlet end of the heating container is also communicated with a pressure device, and the pressure device is communicated with the cold water source.

[0020] In the present scheme, the pressure device is arranged in the heating container and the cold water source, which can provide pressure power for pressurizing the cold water generated by the cold water source and conveying the cold water to the heating container through the pipeline.

[0021] Preferably, the water purifier comprises a filtering system, the water inlet end of the filtering system is communicated with the cold water source, and the water outlet end of the filtering system is communicated with the pressure device through a second one-way valve.

[0022] In the present scheme, the filtering system is used to filter the cold water provided by the cold water source, and purify the cold water, and the water outlet end of the filtering system is communicated with the second one-way valve, so as to ensure that the filtered water cannot flow back into the filtering system, avoid damaging the filtering system, and control the pressure device to flow to the heating container.

[0023] Preferably, the pressure device is a pressure barrel, a gas bag is arranged in the pressure barrel, and the water inlet and the water outlet of the pressure barrel are the same, and a valve body is arranged at the water inlet and the water outlet of the pressure barrel.

[0024] In the scheme, the pressure device adopts the pressure barrel, and the structure is relatively simple; the pressure barrel can play the functions of pressure boosting and water storage; when the water of the cold water source enters the pressure barrel, the gas bag is extruded to generate pressure; when the pressure is released, the pressure generated by the gas bag pressurizes the water in the pressure barrel and flows to the heating container; the water inlet and the water outlet in the pressure barrel cannot be performed simultaneously, one water inlet and water outlet are arranged, the structure is simple, and only one valve body needs to be arranged to control the water flow of the inlet and the outlet.

[0025] The positive progress effect of the utility model lies in that: the water purifier detects the temperature of the user's drinking water outlet through the first temperature detector, starts the pump on the water outlet pipeline when the temperature is lower than the preset temperature, provides backwater power through suction, makes the water with too low temperature backflow to the heating container through the backwater pipeline for re-heating; the first cup of water temperature of the water purifier when water is discharged again can be ensured to be not lower than the preset temperature when the water purifier is stopped for a period of time and used again, the warm water use experience of the user is improved, and the user does not need to pour away the first cup of water, waste is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is an internal structure schematic view of the water purifier in the utility model embodiment.

[0027] MARK NUMBER EXPLANATION:

[0028] Heating container 1

[0029] User's drinking water outlet 2

[0030] Pump 3

[0031] First electromagnetic valve 4

[0032] Second electromagnetic valve 5

[0033] First temperature detection device 6

[0034] Second temperature detection device 7

[0035] Filter system 8

[0036] Pressure device 9

[0037] Valve body 10

[0038] Heat exchanger 11

[0039] Electric heater 12

[0040] Low water level probe 13

[0041] High water level probe 14

[0042] First one-way valve 15

[0043] Second one-way valve 16

[0044] Water outlet pipeline 17

[0045] Water return pipeline 18 DETAILED DESCRIPTION

[0046] The utility model will be described in more detail below with reference to the preferred embodiments and drawings.

[0047] The utility model provides a water purifier for providing clean drinking hot water or warm water for users.

[0048] As shown in Figure 1 the water purifier comprises a user drinking water outlet 2, a heating container 1 and a control unit (not shown in the figure), the water inlet end of the heating container 1 is communicated with a cold water source, the water outlet end of the heating container 1 is communicated with the user drinking water outlet 2 through a water outlet pipeline, a water return pipeline is further communicated between the heating container 1 and the user drinking water outlet 2, the water outlet pipeline or the water return pipeline is provided with a first temperature detection device 6 at the user drinking water outlet 2, a first electromagnetic valve 4 is arranged on the water return pipeline, a pump 3 is arranged on the water outlet pipeline, and the control unit is electrically connected with the heating element of the heating container 1, the first temperature detection device 6, the first electromagnetic valve 4 and the pump 3.

[0049] Specifically, in the embodiment, the heating container 1 is a heating water tank, the water inlet end of the heating water tank is communicated with an external cold water source (not shown in the figure) through a heat exchanger 11 and other pipe fittings, and the first temperature detection device 6 is a temperature probe, which is simple in structure, low in cost and capable of meeting the functional requirements of temperature detection. The temperature probe is arranged on the water outlet pipeline or the water return pipeline at the user drinking water outlet 2 and can timely detect the temperature of the drinking water flowing out of the user drinking water outlet 2.

[0050] The water purifier detects the temperature of the user's drinking water outlet 2 through the first temperature detector. When the temperature is lower than the preset temperature, the first temperature detection device 6 feeds back the detected temperature signal to the control unit, and the control unit starts the pump 3 on the water outlet pipeline to provide water power through suction, so that the water with too low temperature is returned to the heating container 1 through the water return pipeline for reheating. Even if the water purifier stops for a period of time and is used again, the temperature of the first cup of water can be ensured to be not lower than the preset temperature, improving the user's hot water use experience. Moreover, the user does not need to pour out the first cup of water, avoiding waste. The first electromagnetic valve 4 is arranged on the water return pipeline. When water return is needed, the first electromagnetic valve 4 can control the flow rate of the water return pipeline. When water return is not needed, the first electromagnetic valve 4 can be closed to prevent the water in the heating container 1 from flowing to the water return pipeline. The control unit is electrically connected with the heating element of the heating container 1, the first temperature detection device 6, the first electromagnetic valve 4 and the pump 3, and can control the signal transmission of each component of the water purifier, ensuring the normal use of the water purifier.

[0051] The cold water inlet of the heat exchanger 11 is communicated with an external cold water source, and the cold water outlet of the heat exchanger 11 is communicated with the heating container 1. The hot water inlet of the heat exchanger 11 is communicated with the water outlet end of the heating container 1 through part of the water outlet pipeline, and the hot water outlet of the heat exchanger 11 is communicated with the user's drinking water outlet 2 through part of the water outlet pipeline.

[0052] The cold and hot water can achieve the heat exchange effect of temperature rise or drop in the heat exchanger 11, which is beneficial to the water outlet speed of the warm water and the diversity of water outlet at different temperatures, thereby improving the user's experience of using the warm water. On the one hand, the cold water enters the heat exchanger 11 from the cold water end, and the cold water is heated after heat exchange. The heated cold water enters the heating container 1, so that the basic water temperature entering the heating container 1 is not too low, and the heating speed is faster, which is beneficial to the water outlet speed of the warm water. On the other hand, the heated hot water enters the heat exchanger 11 from the heating container 1 through the water outlet pipeline, and the hot water is cooled after heat exchange. The cooled hot water flows to the user's drinking water outlet 2 through the water outlet pipeline, so that the user can directly drink the warm water with appropriate temperature after receiving the water, which is also beneficial to the water outlet speed of the warm water and convenient for heat exchange of the warm water at different temperatures according to the temperature needs.

[0053] Specifically, as shown in Figure 1 the heat exchanger 11 is a coil heat exchanger 11. The coil heat exchanger 11 is a heat exchanger 11 in which two cold and hot water pipes are alternately coiled. The coil heat exchanger 11 has good heat exchange effect, fast speed, and small volume, and does not occupy too much space of the water purifier. In other embodiments, other heat exchange methods can also be used, as long as the cold water is heated and the hot water is cooled.

[0054] In other embodiments, the heat exchanger 11 can also be omitted as needed, at which time the heating container 1 can heat cold water directly to the preset temperature according to the user setting and supply the user for drinking. However, in this way, it is not as convenient as the present embodiment to exchange the hot water of higher temperature flowing out of the heating container 1 with cold water at the heat exchanger 11, so that the appropriate temperature of the hot water or warm water can be exchanged faster and more conveniently according to the drinking temperature of the user.

[0055] Further, the second electromagnetic valve 5 is further arranged on the communication pipeline between the cold water outlet and the heating container 1, the first one-way valve 15 is arranged in communication between the second electromagnetic valve 5 and the heating container 1, and the second electromagnetic valve 5 is electrically connected with the control unit. The second electromagnetic valve 5 is arranged on the communication pipeline between the cold water outlet of the heat exchanger 11 and the heating container 1, can open or close the pipeline to control the flow, and can also control the flow rate of the cold water entering the heating container 1 from the heat exchanger 11 after being heated; the first one-way valve 15 arranged between the second electromagnetic valve 5 and the heating container 1 can ensure the flow direction of the water and ensure that the water cannot flow back to the heat exchanger 11; and the second electromagnetic valve 5 is electrically connected with the control unit to control the opening and closing of the second electromagnetic valve 5. In other embodiments, the electromagnetic valve and the one-way valve can also use other accessories, as long as the water flow direction is controlled to prevent the water from flowing back to the heat exchanger 11.

[0056] In the present embodiment, the heating element of the heating container 1 is an electric heater 12, the electric heater 12 is electrically connected with an external power supply, and at least part of the electric heater 12 is arranged in the heating container 1. The electric heater 12 is used as the heating element, and part or all of the electric heater 12 is arranged in the container to directly contact with the cold water, which can not only heat the cold water into hot water, but also play a role in further boiling and disinfection.

[0057] In the present embodiment, at least one water level probe is arranged on the heating container 1, the end of the at least one water level probe is arranged at the top of the inner cavity of the heating container 1, and the water level probe is electrically connected with the control unit. At least one water level probe is arranged on the heating container 1 to detect the water level, the end of the water level probe is arranged at the top of the inner cavity of the heating container 1, which can detect whether the water level in the heating container 1 is too high, and is connected with the control unit to control whether to fill water or overflow through the feedback signal.

[0058] Specifically, in the present embodiment, the water level probe includes a low water level probe 13 and a high water level probe 14, the end of the low water level probe 13 extends to the bottom of the inner cavity of the heating container 1, and the end of the high water level probe 14 is arranged at the top of the inner cavity of the heating container 1. The low water level probe 13 extends to the bottom of the inner cavity of the heating container 1 to detect whether the water level is too low, which can control to increase the water inflow, and the high water level probe 14 is arranged at the top of the heating container 1 to detect whether the water level is too high, which can control to fill water or overflow. In other embodiments, the number and position of the probe are not limited, as long as the function of detecting the water level is achieved.

[0059] The second temperature detecting device 7 is arranged at the bottom of the heating container 1 and is electrically connected with the control unit. The second temperature detecting device 7 is used to detect whether the water temperature in the heating tank is too low, and is connected with the control unit, so that the heating is started when the temperature is too low, so that the water purifier always has hot water reserve. The second temperature detecting device 7 is arranged at the bottom of the heating container 1, so that the temperature can be detected regardless of the water level in the heating container 1.

[0060] Specifically, when the second temperature detecting device detects that the temperature is lower than 92℃, the electric heater 12 is started to reheat the water in the heating tank, so that the user can obtain hot water at any time. In other embodiments, the preset temperature can be set according to the user's demand.

[0061] The water inlet end of the heating container 1 is also communicated with a pressure device 9, and the pressure device 9 is communicated with an external cold water source. The pressure device 9 arranged in the heating container 1 and the cold water source can provide pressure power for conveying the cold water generated by the cold water source to the heating container 1 through the pipeline.

[0062] Specifically, the pressure device 9 is a pressure barrel, the pressure barrel is provided with an air bag, the water inlet and the water outlet of the pressure barrel are the same, and the valve body 10 is arranged at the water inlet and the water outlet of the pressure barrel. The pressure barrel can function as pressure boosting and water storage. When the water of the cold water source enters the pressure barrel, the air bag is extruded to generate pressure. When the pressure is released, the water in the pressure barrel flows to the heating container 1. The water inlet and the water outlet of the pressure barrel cannot be performed at the same time. One water inlet and water outlet are arranged, the structure is simple, and only one manual ball valve is needed to control the water flow of the inlet and the outlet. In other embodiments, other pressure devices 9 can also be selected, as long as they can generate power to convey the water source.

[0063] Further, the water purifier comprises a filtering system 8, the water inlet end of the filtering system 8 is communicated with the cold water source, and the water outlet end of the filtering system 8 is communicated with the pressure device 9 through the second one-way valve 16. The filtering system 8 is used to filter the cold water generated in the cold water source, so that the cold water becomes purified water. The purified water after filtering is communicated with the pressure device 9 through the second one-way valve 16, so that the purified water after filtering cannot flow back into the filtering system 8, and the pressure device 9 can only make the purified water flow to the heating container 1.

[0064] Although the specific embodiments of the present application are described above, those skilled in the art should understand that this is only an example, and the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, and these changes and modifications all fall within the protection scope of the present application.

Claims

1. A water purifier comprising a user drinking water outlet, a heating vessel, and a control unit, the water inlet end of the heating vessel being connected to a cold water source, and the water outlet end of the heating vessel being connected to the user drinking water outlet through a water outlet pipeline, characterized in that, The heating container and the user drinking water outlet are also communicated with a backwater pipeline, the water outlet pipeline or the backwater pipeline is provided with a first temperature detection device at the user drinking water outlet, the backwater pipeline is provided with a first electromagnetic valve, the water outlet pipeline is provided with a pump, and the control unit is electrically connected with the heating element of the heating container, the first temperature detection device, the first electromagnetic valve and the pump.

2. The water purifier according to claim 1, wherein The water purifier further comprises a heat exchanger, a cold water inlet of the heat exchanger is communicated with the cold water source, and a cold water outlet of the heat exchanger is communicated with the heating container. A hot water inlet of the heat exchanger is communicated with a water outlet end of the heating container through part of the water outlet pipeline, and a hot water outlet of the heat exchanger is communicated with the user drinking water outlet through part of the water outlet pipeline.

3. The water purifier according to claim 2, wherein A second electromagnetic valve is further arranged on the communication pipeline between the cold water outlet and the heating container, a first check valve is communicated between the second electromagnetic valve and the heating container, and the second electromagnetic valve is electrically connected with the control unit.

4. The water purifier of claim 1, wherein The heating element of the heating container is an electric heater, the electric heater is electrically connected with an external power supply, and at least part of the electric heater is arranged in the heating container.

5. The water purifier as claimed in claim 1, wherein, At least one water level probe is arranged on the heating container, and an end of the at least one water level probe is arranged at a top of an inner cavity of the heating container.

6. The water purifier of claim 5, wherein The water level probe comprises a low water level probe and a high water level probe, the end of the low water level probe extends downward to a bottom of the inner cavity of the heating container, and the end of the high water level probe is arranged at the top of the inner cavity of the heating container.

7. The water purifier of claim 1, wherein The heating container comprises a second temperature detection device, the second temperature detection device is arranged at a bottom of the heating container, and the second temperature detection device is electrically connected with the control unit.

8. The water purifier of claim 1, wherein The water inlet end of the heating container is further communicated with a pressure device, and the pressure device is communicated with the cold water source.

9. The water purifier of claim 8, wherein, The water purifier comprises a filtering system, a water inlet end of the filtering system is communicated with the cold water source, and a water outlet end of the filtering system is communicated with the pressure device through a second check valve.

10. The water purifier as claimed in claim 8, wherein, The pressure device is a pressure barrel, a water inlet and a water outlet of the pressure barrel are the same, a valve body is arranged at the water inlet and the water outlet of the pressure barrel, and a gas bag is arranged in the pressure barrel.

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