CN216918813U - Water purifier - Google Patents

Abstract

The utility model provides a water purifier. The purifier includes: the first pipeline comprises a booster pump, a reverse osmosis filter element, a flow valve and a heating device; the drainage pipeline is connected between the concentrate port and the drainage end of the reverse osmosis filter element; one end of the return pipeline is connected to a water inlet of the booster pump, the other end of the return pipeline is connected to a pure water port of the reverse osmosis filter element, and a return control valve is arranged on the return pipeline; the flow detection device is arranged on the water discharge pipeline or the pipeline between the water outlet of the booster pump and the raw water port of the reverse osmosis filter element. Therefore, when a user receives hot water with different temperatures through the water purifier, even if the flow valve limits the flow of the pure water discharged from the pure water port of the reverse osmosis filter element, redundant pure water can be shunted to the return pipeline and enters the first pipeline again. Therefore, the phenomenon that the ratio of the current waste water is reduced due to the flow of the flow valve to the pure water can be avoided, and the waste of water resources is reduced.

Description

Water purifier

Technical Field

The utility model relates to the technical field of water purification, in particular to a water purifier.

Background

With the increase of water demand of people, various water purifiers with heating function are produced.

A reverse osmosis filter element and a heating device can be arranged in the water purifier. The user can receive the water purification of getting the normal atmospheric temperature through the reverse osmosis filter core, also can receive the water purification after getting the heating through reverse osmosis filter core and heating device's combined action. Most of existing heating devices adopt instant heating devices, but reverse osmosis filter elements with a large-flux water purification function are difficult to match with the heating devices, so a flow valve is arranged at the upstream of the heating devices to control the flow entering the heating devices, and the outlet water temperature is controlled by adjusting the flow.

However, the limitation of the outlet flow of the flow valve causes a large amount of raw water entering the filter device to be discharged from the concentrate outlet, which not only wastes water resources, but also may damage the reverse osmosis filter element due to the pressure rise in the reverse osmosis filter element, which affects the service life.

SUMMERY OF THE UTILITY MODEL

In order to at least partially solve the problems in the prior art, the utility model provides a water purifier. The purifier includes into water end, play water end and drainage end, and the purifier still includes: the first pipeline comprises a booster pump, a reverse osmosis filter element, a flow valve and a heating device, wherein a water inlet of the booster pump is connected with a water inlet end, a water outlet of the booster pump is connected with a raw water inlet of the reverse osmosis filter element, a pure water port of the reverse osmosis filter element is connected with a water inlet of the flow valve, a water outlet of the flow valve is connected with a water inlet of the heating device, and a water outlet of the heating device is connected with a water outlet end; the drainage pipeline is connected between the concentrated water port and the drainage end of the reverse osmosis filter element; one end of the return pipeline is connected to a water inlet of the booster pump, the other end of the return pipeline is connected to a pure water port of the reverse osmosis filter element, and a return control valve is arranged on the return pipeline; the flow detection device is arranged on the water discharge pipeline or the pipeline between the water outlet of the booster pump and the raw water port of the reverse osmosis filter element. Therefore, when a user receives hot water with different temperatures through the water purifier, even if the flow valve limits the flow of the pure water discharged from the pure water port of the reverse osmosis filter element, redundant pure water can be shunted to the return pipeline and enters the first pipeline again. Like this, when the user connects and gets hot water, can avoid because the flow valve is to the current-limiting of pure water, the phenomenon that present waste water ratio value reduces appears, reduces the waste of water resource. Because the current wastewater ratio is approximately equal to the nominal wastewater ratio, a part of pure water is shunted to the return line, the pressure rise in the reverse osmosis filter element can be avoided, and the damage to the reverse osmosis filter element caused by the pressure rise is avoided. In addition, because the return line can carry out circulating filtration with partly pure water backward flow to first pipeline in, still reduced the filter pressure of reverse osmosis filter core, to the reutilization of pure water, improved the filtration efficiency of reverse osmosis filter core, also practiced thrift the water resource.

The water purifier comprises a controller, wherein the flow detection device, the flow valve and the backflow control valve are electrically connected with the controller, and under the condition that the flow detection device is arranged on a pipeline between a water outlet of the booster pump and a raw water port of the reverse osmosis filter element, the controller is used for determining the flow rate of the flow valve according to the expected water taking temperature and controlling the backflow control valve to be opened when the flow detected by the flow detection device is larger than the normal water inlet flow of the reverse osmosis filter element corresponding to the flow rate; and/or under the condition that the flow detection device is arranged on the drainage pipeline, the controller is used for determining the flow rate of the flow valve according to the expected water taking temperature and controlling the backflow control valve to be opened when the flow detected by the flow detection device is greater than the normal drainage flow rate of the reverse osmosis filter element corresponding to the flow rate. From this, the purifier can control the backward flow control valve through the controller to improve the purifier to the accuracy of the reposition of redundant personnel of the pure water that generates, facilitate the use, easily realize.

Illustratively, the water purifier also comprises a second pipeline, one end of the second pipeline is connected to the pure water port of the reverse osmosis filter element, the other end of the second pipeline is connected to the water outlet end, a cold water control valve is arranged on the second pipeline, and the controller is also used for controlling the backflow control valve to be closed when the cold water control valve is opened. Therefore, a user can directly access pure water at normal temperature through the water purifier, and the application range of the water purifier is expanded.

Illustratively, the booster pump is a variable displacement pump and the controller is configured to determine an output flow rate of the variable displacement pump based on a desired water intake temperature. Under the unchangeable circumstances of the through-flow (pure water flow) of flow valve, total inflow reduces, and the pressure in the reverse osmosis filter core also can reduce, has not only prolonged the life of reverse osmosis filter core, can also reduce the dense water flow of reverse osmosis filter core, has practiced thrift the water resource. Furthermore, because the output flow of the booster pump is reduced, the pressure born by the flow valve when the flow valve limits the flow can be reduced, and the precision of the pure water quantity discharged by the flow valve is improved, so that the stability of the outlet water temperature of the water purifier is improved. In addition, the variable pump can also reduce the service power of purifier when changing output flow, and the noise reduction reduces vibrations, improves user's use and experiences.

Illustratively, the first conduit further comprises a faucet, an outlet of which forms the water outlet end, and the heating device is disposed within the faucet. This setting can improve the integrated level of purifier, improves user's use and experiences.

The water purifier further comprises a second pipeline, one end of the second pipeline is connected to the pure water port of the reverse osmosis filter element, the other end of the second pipeline is connected to the cold water inlet of the faucet, and a cold water control valve is arranged on the second pipeline. Therefore, a user can take hot water through the faucet and normal-temperature water, the integration level of the water purifier is improved, and the water purifier is convenient to use.

Illustratively, the water outlet end comprises a hot water outlet and a cold water outlet which are arranged on the faucet, the hot water outlet is connected with the first pipeline, and the cold water outlet is connected with the second pipeline. The hot water outlet and the cold water outlet are respectively arranged, so that the water flow in the first pipeline and the second pipeline can be prevented from being mixed, and the expected water taking temperature for receiving and taking the pure water is influenced.

Exemplarily, a first check valve is further arranged on the return pipeline, and the conduction direction of the first check valve is from the pure water port of the reverse osmosis filter element to the water inlet of the booster pump. Therefore, water flow can be prevented from flowing from the water inlet of the booster pump to the pure water port of the reverse osmosis filter element through the return pipe, and the water flow in the return pipe is prevented from flowing backwards.

Exemplarily, a second check valve is further arranged on the first pipeline, and the conduction direction of the second check valve is from the pure water port of the reverse osmosis filter element to the water outlet end. The second check valve can determine the flow guide direction of the first pipeline, so that the water flow in the first pipeline is prevented from flowing backwards, and the water outlet rate of the reverse osmosis filter element is ensured.

Illustratively, the first pipeline further comprises a water inlet solenoid valve and/or a pre-filter element which are arranged at the upstream of the booster pump. The solenoid valve of intaking can be the total switch of intaking of purifier, and when the purifier was out of work, the solenoid valve of intaking can be closed to prevent that the raw water from getting into the purifier, avoid rivers to discharge from the dense mouth of a river of reverse osmosis filter core, the phenomenon that waste water normally flowed appears. The preposed filter element can adsorb hypochlorous acid in raw water, and protects a downstream reverse osmosis filter element. In addition, the preposed filter element can also be used for carrying out primary filtration on larger granular impurities, organic matters, microorganisms and the like in raw water, and the microorganisms are prevented from breeding due to the long-time use of the concentrated water container.

A series of concepts in a simplified form are introduced in the context of the present invention, which will be described in further detail in the detailed description section. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

The advantages and features of the present invention are described in detail below with reference to the accompanying drawings.

Drawings

The following drawings of the utility model are included to provide a further understanding of the utility model. The drawings illustrate embodiments of the utility model and, together with the description, serve to explain the principles of the utility model. In the drawings, there is shown in the drawings,

FIG. 1 is a schematic illustration of a water circuit of a water purifier according to an exemplary embodiment of the present disclosure;

FIG. 2 is a schematic illustration of a water circuit of a water purifier according to another exemplary embodiment of the present disclosure; and

FIG. 3 is an enlarged view of a portion of the faucet shown in FIG. 1.

Wherein the figures include the following reference numerals:

101. a water inlet end; 102. a water outlet end; 103. a drainage end; 100. a first pipeline; 110. a booster pump; 120. a reverse osmosis filter element; 121. a raw water port; 122. a pure water port; 123. a dense water port; 130. a flow valve; 140. a heating device; 150. a flow detection device; 160. a second check valve; 200. a second pipeline; 210. a cold water control valve; 300. a drain line; 400. a return line; 410. a reflux control valve; 420. a first check valve; 500. a faucet; 510. a hot water outlet; 520. a cold water outlet; 610. a water inlet electromagnetic valve; 620. the front-mounted filter element.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the present invention. One skilled in the art, however, will understand that the following description merely illustrates a preferred embodiment of the utility model and that the utility model may be practiced without one or more of these details. In other instances, well known features have not been described in detail so as not to obscure the utility model.

The utility model provides a water purifier, which is shown in figures 1-2. The water purifier may include a water inlet end 101, a water outlet end 102, and a water outlet end 103. The water inlet end 101 may be used to connect municipal water lines, and raw water may enter the water purifier through the water inlet end 101. The water outlet 102 may be connected to a faucet or other device for taking water, and pure water generated by filtration of the water purifier may be discharged from the water outlet 102. The water discharge end 103 can be used for connecting with a water discharge pipeline, and concentrated water generated in the process of generating pure water by the water purifier can be discharged from the water discharge end 103. Wherein, one or more in water inlet end 101, play water end 102 and the drainage end 103 can be provided with the pipeline connector, and at pipeline connector department, the user can be connected purifier and each pipeline through modes such as threaded connection, welding or fast plug connection.

The water purifier may include a first conduit 100. The first circuit 100 may include a booster pump 110, a reverse osmosis cartridge 120, a flow valve 130, and a heating device 140. The water inlet of the booster pump 110 may be connected to the water inlet port 101. The water outlet of the booster pump 110 may be connected to the raw water port 121 of the reverse osmosis filter element 120. The clean water port 122 of the reverse osmosis cartridge 120 may be connected to a water inlet of the flow valve 130. The outlet of the flow valve 130 may be connected to the inlet of the heating device 140. The outlet of the heating device 140 may be connected to the outlet end 102.

The booster pump 110 may include any one of a screw pump, a vane pump, a gear pump, or the like. Preferably, the booster pump 110 may be a diaphragm pump, which has advantages in that the diaphragm pump has a simple structure, is less vulnerable to damage, is less vulnerable to dry suction and idle rotation, and has a long service life.

The reverse osmosis filter element 120 may filter raw water using a reverse osmosis membrane to generate pure water and discharge concentrated water. The connection of the booster pump 110 and the reverse osmosis filter element 120 can increase the pressure of raw water entering the reverse osmosis filter element 120, thereby increasing the filtering capacity of the reverse osmosis filter element.

The flow valve 130 may comprise any flow valve that may be present or may come into existence in the future, and may function to maintain a constant flow rate through the valve, and thus a constant flow rate of a controlled object (e.g., a loop, a user or a piece of equipment, etc.) connected in series with the valve, in the event of a change in the pressure difference between the inlet and the outlet of the valve. In other words, the flow valve 130 may be set, regulate the flow therethrough, and remain constant.

A heating device 140, the heating device 140 being capable of heating a flow of water passing therethrough. Illustratively, a heater and a water pipe may be provided in the heating device 140. The heater may be disposed in the water tube and immersed in the water flow to heat the water flow through the water tube. The heater may also be disposed outside the water tube, surrounding the water tube, to heat the water flowing through the water tube. The heater may comprise any kind of heater, existing or that may occur in the future, such as heating rods, heating wires, etc. The heating device 140 may include constant and variable power, with the difference being that the same unit of water is heated at different rates. The water purifier of the present invention preferably selects the heating device 140 with constant power. The water purifier with the heating device 140 with constant power has simple control logic and is easy to realize.

The water purifier may further comprise a drain line 300. The drain line 300 may be connected between the concentrate port 123 and the drain end 103 of the reverse osmosis cartridge 120. The drain line 300 may be used to drain the concentrate produced by the reverse osmosis filter element 120 during filtration.

As is well known, in order to meet the requirement of users for fast water intake, the water purifier usually selects a booster pump 110 and a reverse osmosis filter element 120 with large flux, and users can quickly and massively take normal-temperature water by using the booster pump 110 and the reverse osmosis filter element 120. However, when the pure water is heated by the heating device 140, the temperature of the pure water needs to be controlled by the flow rate of the discharged pure water. The higher the flow rate, the lower the temperature, and the lower the flow rate, the higher the temperature. Control of the flow rate may be achieved by a flow valve 130 disposed on the first line 100.

The water purifier may further comprise a return line 400. The return line 400 may have one end connected to a water inlet of the booster pump 110 and the other end connected to the pure water port 122 of the reverse osmosis filter element 120. A return control valve 410 may be provided on the return line 400. The return flow control valve 410 may include, but is not limited to, a solenoid valve.

The water purifier may further comprise a flow detection device 150. The flow sensing device 150 may include, but is not limited to, a turbine flow meter, a differential pressure flow meter, an ultrasonic flow meter, or the like. The flow sensing device 150 can measure the flow of the liquid in the pipeline in which it is located. The flow rate detector 150 may be disposed on the drain line 300, or may be disposed on a line between the water outlet of the booster pump 110 and the raw water port 121 of the reverse osmosis filter element 120.

If the flow detection device 150 is disposed on the drain line 300, the user can detect the flow rate of the concentrated water at the concentrated water port 123 of the reverse osmosis filter element 120 through the flow detection device 150, and can know the flow rate of the pure water at the pure water port 122 of the reverse osmosis filter element 120 according to the flow valve 130, and can know the current ratio of the wastewater ratio of the reverse osmosis filter element 120 by using the ratio of the flow rate of the pure water to the flow rate of the concentrated water.

If the flow detection device 150 is disposed on the pipeline between the water outlet of the booster pump 110 and the raw water port 121 of the reverse osmosis filter element 120, then the user can detect the water inlet flow entering the raw water port 121 of the reverse osmosis filter element 120 through the flow detection device 150, and can know the pure water flow of the pure water port 122 of the reverse osmosis filter element 120 according to the flow valve 130, and subtract the pure water flow from the water inlet flow, so as to obtain the concentrated water flow, and further know the current wastewater ratio of the reverse osmosis filter element 120.

Since the reverse osmosis filter element 120 has a wastewater ratio close to the nominal wastewater ratio and is substantially constant during normal use. That is, if the pure water port 122 and the rich water port 123 are not restricted, the ratio of the pure water flow rate to the rich water flow rate may be regarded as constant. If the flow rate valve 130 is used to limit the flow of pure water discharged from the pure water port 122, the flow rate of concentrated water entering the raw water port 121 is not changed, and the flow rate of concentrated water entering the concentrated water port 123 is increased. Therefore, not only can waste water resources be caused, but also the pressure inside the reverse osmosis filter element 120 can be increased, and the service life of the reverse osmosis filter element 120 can be reduced after long-term use. From the aspect of the waste water ratio, a situation that the current waste water ratio is smaller than the nominal waste water ratio occurs.

Therefore, the water purifier of the present invention may be provided with a return line 400, and if the current wastewater ratio of the water purifier is lower than the nominal wastewater ratio, the return control valve 410 may be opened to allow a portion of the pure water generated by the reverse osmosis filter element 120 to be diverted into the return line 400 under the condition that the inflow rate of the raw water inlet 121 is not changed. In this way, the pressure in the reverse osmosis filter element 120 can be reduced, the concentrate flow rate at the concentrate port 123 can be reduced, and the ratio of the sum of the pure water flow rate diverted into the return line 400 and the pure water flow rate through the flow valve 130 to the current concentrate flow rate can be close to or equal to the nominal wastewater ratio.

Therefore, when a user receives hot water with different temperatures through the water purifier of the present invention, even if the flow valve 130 restricts the flow of pure water discharged from the pure water outlet of the reverse osmosis filter element 120, the excess pure water can be diverted to the return line 400 and re-enter the first line 100. Therefore, when a user receives hot water, the phenomenon that the ratio of the current wastewater is reduced due to the flow of the flow valve 130 to the pure water can be avoided, and the waste of water resources is reduced. Because the current wastewater ratio is substantially equal to the nominal wastewater ratio, a portion of the pure water is diverted to the return line 400, which also prevents the pressure in the reverse osmosis filter element 120 from rising and prevents the reverse osmosis filter element 120 from being damaged by the pressure rise. In addition, since the return line 400 can return a part of the pure water to the first line 100 for circulating filtration, the filtration pressure of the reverse osmosis filter element 120 is reduced, the pure water is reused, the filtration efficiency of the reverse osmosis filter element 120 is improved, and the water resource is saved.

Illustratively, the water purifier includes a controller. The flow sensing device 150, the flow valve 130, and the return flow control valve 410 may all be electrically connected to the controller. The controller can be built by adopting electronic elements such as a timer, a comparator, a register, a digital logic circuit and the like, or can be realized by adopting processor chips such as a singlechip, a microprocessor, a Programmable Logic Controller (PLC), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), a Programmable Logic Array (PLA), an Application Specific Integrated Circuit (ASIC) and the like and peripheral circuits thereof.

The desired water intake temperature may be input to the controller via an input device or the like. The input means may comprise knobs, keys or voice input, etc. In some embodiments, the controller may store opening sizes of the flow valves 130 corresponding to a plurality of desired water intake temperatures, and the controller may change the flow rate by adjusting the opening sizes of the flow valves 130. In embodiments where the power of the heating device 140 is constant, the magnitude of the through flow may be in a one-to-one relationship with the desired water intake temperature.

As shown in fig. 2, in the case where the flow rate detecting means 150 is provided on the pipeline between the water outlet of the booster pump 110 and the raw water port 121 of the reverse osmosis filter element 120, the flow rate detecting means 150 detects the current inflow rate of the reverse osmosis filter element 120. The controller may be configured to determine the flow rate through the flow valve 130 based on a desired water intake temperature, with the higher the desired water intake temperature, the smaller the flow rate, and the lower the desired water intake temperature, the larger the flow rate. The backflow control valve 410 may be controlled to open when the current inflow rate detected by the flow rate detection device 150 is greater than the normal inflow rate of the reverse osmosis filter element 120 corresponding to the through flow rate. The normal water inlet flow of the reverse osmosis filter element 120 can be calculated by the ratio of the current flow rate of the flow valve 130 (pure water flow) to the nominal wastewater ratio. In some embodiments, the normal intake water flow rate may also be stored in the controller in advance, and corresponds to the desired intake water temperature one-to-one. The controller may compare the current intake water flow rate detected by the flow detection device 150 to the normal intake water flow rate at the desired intake water temperature. If the current inlet water flow is larger than the normal inlet water flow, it indicates that there may be more water flow discharged from the concentrate port 123, and the current wastewater ratio may be smaller than the nominal wastewater ratio, so that the pressure in the reverse osmosis filter element 120 may increase, and water resources may be wasted.

As shown in fig. 1, in the case where the flow rate detecting means 150 is provided on the drain line 300, the flow rate detecting means 150 detects the current drain flow rate (concentrate flow rate) of the reverse osmosis filter element 120. The controller may be configured to determine the flow rate of the flow valve 130 based on the desired water intake temperature, and control the backflow control valve 410 to open when the current drain flow rate detected by the flow detection device 150 is greater than the normal drain flow rate of the reverse osmosis filter element 120 corresponding to the flow rate. The normal discharge flow rate of the reverse osmosis filter element 120 can be calculated by the ratio of the current flow rate valve 130 (pure water flow rate) to the nominal wastewater ratio. In some embodiments, the normal discharge flow rate may also be stored in advance in the controller, and may correspond one-to-one to the desired water intake temperature. The controller may compare the current drain flow rate detected by the flow detection device 150 with the normal drain flow rate at the desired water intake temperature. If the current drainage flow is larger than the normal drainage flow, it indicates that there may be more water flow discharged from the concentrate outlet 123, and the current wastewater ratio is smaller than the nominal wastewater ratio, the pressure in the reverse osmosis filter element 120 may increase, and the water resource may be wasted.

Above a plurality of embodiments, can be through opening the backward flow control valve 410 on the return line 400, shunt the pure water that reverse osmosis filter core 120 generated to reduce the pressure in the reverse osmosis filter core 120, improve current waste water ratio, reduce the waste of water resource.

From this, the purifier can control backward flow control valve 410 through the controller to improve the purifier to the accuracy of the reposition of redundant personnel of the pure water that generates, facilitate the use, easily realize.

Illustratively, the water purifier may further include a second pipeline 200. One end of the second line 200 may be connected to the pure water port 122 of the reverse osmosis cartridge 120 and the other end may be connected to the water outlet 102. A cold water control valve 210 may be provided on the second pipe 200. The controller may also be used to control the return control valve 410 to close when the cold water control valve 210 is open. That is, if the user desires the temperature of the received water to be the normal temperature, the pure water of the normal temperature may be directly received by opening the cold water control valve 210. Since the flow valve 130 is not disposed on the second pipeline 200, the flow rate of the pure water discharged from the second pipeline 200 may be the maximum flow rate of the water purifier, that is, the maximum water discharge amount of the booster pump 110 and the reverse osmosis filter element 120. In some embodiments, in order to avoid diversion of pure water by the return pipeline 400 when a user receives normal-temperature water, the controller may further close the return control valve 410 when the cold water control valve 210 is opened, so as to ensure the water yield of the pure water at normal temperature of the water purifier. Therefore, a user can directly access pure water at normal temperature through the water purifier, and the application range of the water purifier is expanded.

Of course, in some embodiments, the value of the normal water inlet flow or the normal water discharge flow may be set to be higher than the maximum flow rate of the booster pump 110 and the reverse osmosis filter element 120, or even infinite, when the expected water intake temperature is normal temperature. Thus, when the user receives normal-temperature pure water, the return control valve 410 is not opened, and the pure water is prevented from being shunted by the return pipeline 400.

Illustratively, the booster pump 110 may be a variable displacement pump. The controller may be configured to determine the output flow rate of the variable displacement pump based on a desired water intake temperature. A variable displacement pump, i.e., a pump whose output flow is variable, can be achieved by one or more of varying the speed of rotation or varying the volume. In some embodiments, the output flow rate of the variable displacement pump may decrease as the desired intake water temperature increases. This is because the desired water intake temperature is increased, the flow rate of the flow valve 130 will be decreased, and the flow rate of pure water at the pure water port 122 of the reverse osmosis cartridge 120 will be decreased. With a constant inlet flow rate, a decrease in the flow rate of the flow valve 130 will cause the reverse osmosis cartridge 120 to discharge more concentrate, resulting in a decrease in the waste water ratio. To reduce the concentrate discharge, increase the waste-to-water ratio, and reduce the output flow of the booster pump 110, the inlet flow into the reverse osmosis filter element 120 is reduced, thereby reducing the total inlet flow into the reverse osmosis filter element 120. Under the condition that the through flow (pure water flow) of the flow valve 130 is not changed, the total water inflow is reduced, the pressure in the reverse osmosis filter element 120 is also reduced, the service life of the reverse osmosis filter element 120 is prolonged, the concentrated water flow of the reverse osmosis filter element 120 can be reduced, and the water resource is saved. Further, as the output flow of the booster pump 110 is reduced, the pressure born by the flow valve 130 when the flow is limited can be reduced, and the precision of pure water discharged by the flow valve 130 is improved, so that the stability of the outlet water temperature of the water purifier is improved. In addition, the variable pump can also reduce the service power of purifier when changing output flow, and the noise reduction reduces vibrations, improves user's use and experiences.

Of course, it will be appreciated that the output flow of the variable displacement pump as a function of the temperature of the intake water should also be greater than the through flow of the flow valve 130. That is, the variable displacement pump can reduce the output flow rate as the desired intake water temperature increases, but the output flow rate cannot be lower than the through flow rate of the flow valve 130. Thus, the flow valve 130 can be maintained in the fully-loaded operating state with the flow rate of the flow valve 130 being constant, and the user can quickly take pure water up to a desired water intake temperature.

Illustratively, the water purifier may include a faucet 500. The outlet of the faucet 500 may form the water outlet end 102. Heating device 140 may be disposed within faucet 500. In the embodiment shown in fig. 1-2, faucet 500 and heating device 140 may be a single piece. When a user receives pure water at a desired temperature through the faucet, the heating device 140 in the faucet 500 may be turned on and the pure water passing through the heating device 140 is heated. This setting can improve the integrated level of purifier, improves user's use and experiences.

In embodiments where the water purifier comprises the second tubing 200, the faucet 500 may also comprise a cold water inlet. One end of the second pipe 200 may be connected to the pure water port 122 of the reverse osmosis cartridge 120, and the other end may be connected to the cold water inlet port of the faucet 500. Therefore, a user can take hot water through the faucet and normal-temperature water, the integration level of the water purifier is improved, and the water purifier is convenient to use.

Illustratively, as shown in FIG. 3, the outlet end 102 may include a hot water outlet 510 and a cold water outlet 520 disposed on the faucet 500. The hot water outlet 510 may be connected to the first pipe 100. The cold water outlet 520 may be connected to the second pipe 200. The hot water outlet 510 and the cold water outlet 520 are respectively arranged, so that the water flow in the first pipeline 100 and the water flow in the second pipeline 200 can be prevented from being mixed, and the expected water taking temperature for receiving the pure water can be prevented from being influenced.

Illustratively, a first check valve 420 may also be disposed on the return line 400. The first check valve 420 may be opened from the pure water port 122 of the reverse osmosis filter element 120 to the water inlet of the booster pump 110. This prevents water from flowing from the water inlet of the booster pump 110 to the pure water port 122 of the reverse osmosis cartridge 120 through the return line 400, and prevents water from flowing backward in the return line 400.

For example, a second check valve 160 may be further disposed on the first pipeline 100. The second check valve 160 may be opened from the pure water port 122 of the reverse osmosis filter element 120 to the water outlet 102. The second check valve 160 can determine the flow direction of the first pipeline 100, thereby preventing the water flow in the first pipeline 100 from flowing backwards and ensuring the water yield of the reverse osmosis filter element 120.

Illustratively, the first conduit 100 may further include a water inlet solenoid valve 610 disposed upstream of the booster pump 110. The water inlet solenoid valve 610 may include, but is not limited to, a solenoid valve. The water inlet solenoid valve 610 can be the total water inlet switch of purifier, and when the purifier was out of work, the water inlet solenoid valve 610 can be closed to prevent that during the raw water got into the purifier, avoid rivers to discharge from the dense mouth of a river 123 of reverse osmosis filter core 120, the phenomenon of waste water constant current appears.

Illustratively, the first circuit 100 may also include a pre-filter element 620 disposed upstream of the booster pump 110. The pre-filter element 620 can adsorb hypochlorous acid in raw water to protect the downstream reverse osmosis filter element 120. In addition, the front filter element 620 can also be used for primarily filtering larger particles of impurities, organic matters, microorganisms and the like in raw water, so that the microorganisms are prevented from breeding due to the long-time use of the concentrated water container. In the embodiment provided with the water inlet solenoid valve 610, the pre-filter element 620 may be disposed upstream of the water inlet solenoid valve 610, or may be disposed downstream of the water inlet solenoid valve 610, and those skilled in the art may reasonably set the pre-filter element 620 according to actual use conditions.

In the description of the present invention, it is to be understood that the directions or positional relationships indicated by the directional terms such as "front", "rear", "upper", "lower", "left", "right", "lateral", "vertical", "horizontal" and "top", "bottom", etc., are generally based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, and in the case of not making a reverse explanation, these directional terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the scope of the present invention; the terms "inner" and "outer" refer to the interior and exterior relative to the contours of the components themselves.

For ease of description, relative terms of regions such as "above … …", "above … …", "on … …", "above", etc. may be used herein to describe the regional positional relationship of one or more components or features to other components or features shown in the figures. It is to be understood that the relative terms of the regions are intended to encompass not only the orientation of the element as depicted in the figures, but also different orientations in use or operation. For example, if an element in the drawings is turned over in its entirety, the articles "over" or "on" other elements or features will include the articles "under" or "beneath" the other elements or features. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". Further, these components or features may also be positioned at various other angles (e.g., rotated 90 degrees or other angles), all of which are intended to be encompassed herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, elements, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in other sequences than those illustrated or described herein.

The present invention has been illustrated by the above embodiments, but it should be understood that the above embodiments are for illustrative and descriptive purposes only and are not intended to limit the utility model to the scope of the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many variations and modifications may be made in accordance with the teachings of the present invention, which variations and modifications are within the scope of the present invention as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (10)

1. The utility model provides a water purifier, its characterized in that, the water purifier includes into water end, play water end and drainage end, the water purifier still includes:

the first pipeline comprises a booster pump, a reverse osmosis filter element, a flow valve and a heating device, wherein a water inlet of the booster pump is connected with the water inlet end, a water outlet of the booster pump is connected with a raw water port of the reverse osmosis filter element, a pure water port of the reverse osmosis filter element is connected with a water inlet of the flow valve, a water outlet of the flow valve is connected with a water inlet of the heating device, and a water outlet of the heating device is connected with a water outlet end;

the drainage pipeline is connected between a concentrate port of the reverse osmosis filter element and the drainage end;

one end of the return pipeline is connected to a water inlet of the booster pump, the other end of the return pipeline is connected to a pure water port of the reverse osmosis filter element, and a return control valve is arranged on the return pipeline;

and the flow detection device is arranged on the water discharge pipeline or on a pipeline between the water outlet of the booster pump and the raw water port of the reverse osmosis filter element.

2. The water purifier according to claim 1, wherein said water purifier comprises a controller, said flow detection device, said flow valve and said return flow control valve are electrically connected to said controller,

under the condition that the flow detection device is arranged on a pipeline between a water outlet of the booster pump and a raw water port of the reverse osmosis filter element, the controller is used for determining the flow rate of the flow valve according to the expected water taking temperature and controlling the backflow control valve to be opened when the flow detected by the flow detection device is larger than the normal water inlet flow of the reverse osmosis filter element corresponding to the flow rate; and/or

The flow detection device sets up under the last condition of drain line, the controller is used for confirming according to expected water intaking temperature the through-flow of flow valve and when the flow that the flow detection device detected is greater than the through-flow corresponds the normal drainage flow of reverse osmosis filter core is controlled the backward flow control valve is opened.

3. The water purifier according to claim 2, further comprising a second pipeline, wherein one end of the second pipeline is connected to the pure water port of the reverse osmosis filter element and the other end of the second pipeline is connected to the water outlet end, a cold water control valve is arranged on the second pipeline,

the controller is also used for controlling the backflow control valve to be closed when the cold water control valve is opened.

4. The water purifier of claim 2, wherein the booster pump is a variable displacement pump, and the controller is configured to determine an output flow rate of the variable displacement pump based on the desired water intake temperature.

5. The water purifier according to claim 1, wherein said first pipeline further comprises a faucet, an outlet of said faucet forming said water outlet end, said heating device being disposed within said faucet.

6. The water purifier according to claim 5, further comprising a second pipeline, wherein one end of the second pipeline is connected to the pure water port of the reverse osmosis filter element and the other end of the second pipeline is connected to the cold water inlet of the faucet, and a cold water control valve is arranged on the second pipeline.

7. The water purifier of claim 6, wherein the outlet end comprises a hot water outlet and a cold water outlet disposed on the faucet, the hot water outlet is connected to the first pipeline, and the cold water outlet is connected to the second pipeline.

8. The water purifier as recited in claim 1, wherein a first check valve is further disposed on said return line, and a direction of conduction of said first check valve is from a pure water port of said reverse osmosis filter element to a water inlet of said booster pump.

9. The water purifier of claim 1, wherein a second check valve is further disposed on the first pipeline, and a direction of the second check valve is from a pure water port of the reverse osmosis filter element to the water outlet end.

10. The water purifier according to claim 1, wherein the first pipeline further comprises a water inlet solenoid valve and/or a pre-filter element arranged upstream of the booster pump.

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