CN219206579U - Water purifier - Google Patents

Abstract

The utility model relates to the technical field of household appliances, in particular to a water purifier. The water purifier comprises a water purifying system, a hot water system and a second flow regulating device, wherein the water purifying system comprises a water inlet pipeline, a water treatment filter element and a water outlet pipeline which are sequentially connected, the water treatment filter element is suitable for preparing purified water, and the water inlet pipeline is provided with the first flow regulating device so as to regulate the flow of water entering the water treatment filter element; the hot water system is connected to the water outlet pipeline to heat the purified water and discharge the hot water; the second flow regulating device is connected between the hot water system and the water outlet pipeline to regulate the flow of purified water entering the hot water system from the water outlet pipeline. Through the dual regulation cooperation of first flow adjusting device and second flow adjusting device for the discharge of entering hot water system can the accurate heating capacity of matching hot water system, has also guaranteed the stability of the discharge of water in the system, need not additionally to set up storage water tank and suction pump, has reduced spare part quantity, is favorable to reducing volume and noise littleer.

Description

Water purifier

Technical Field

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

Background

When a user uses the water purifier, not only filtered water is needed, but also hot water and cool white water are sometimes needed, when the user wants to heat the water purifier, the user often needs to use heating products such as an electric kettle and a pipeline machine to heat the water purifier, and therefore, the user needs to additionally add electrical products, and the waiting time is prolonged. In order to solve the above problems, there is a heat purifying integrated machine in the prior art, in which a heating module and a water purifying module are integrated, purified water produced by the water purifying module is stored by arranging a water tank in a system, and then water in the water tank is pumped into the heating module by a small water pump to be heated, so that the instant heating function of the water purifying machine is realized.

However, the water tank additionally arranged makes the whole volume of the water purifier larger, and the water pump has certain noise during working, thereby bringing inconvenience to users.

Disclosure of Invention

Therefore, the utility model aims to overcome the defects of large volume and noise of the heat-purifying integrated machine in the prior art, thereby providing the water purifier with small volume and low noise.

In order to solve the above problems, the present utility model provides a water purifier, comprising: the water purification system comprises a water inlet pipeline, a water treatment filter element and a water outlet pipeline which are sequentially connected, the water treatment filter element is suitable for preparing purified water, and a first flow regulating device is arranged on the water inlet pipeline so as to regulate the flow of water entering the water treatment filter element; the hot water system is connected to the water outlet pipeline to heat the purified water and discharge the hot water; and the second flow regulating device is connected between the hot water system and the water outlet pipeline to regulate the flow of purified water entering the hot water system from the water outlet pipeline.

Optionally, the first flow regulating device is a variable-frequency pressure stabilizing pump.

Optionally, the second flow regulating device is a stepless regulating valve.

Optionally, the water treatment filter element is connected with a water inlet pipeline, a filter element water outlet pipeline and a concentrated water pipeline, the filter element water outlet pipeline discharges purified water, the concentrated water pipeline discharges wastewater, the concentrated water pipeline is provided with an adjustable wastewater valve, and the adjustable wastewater valve adjusts the water flow in the concentrated water pipeline according to the water flow entering the water treatment filter element so as to keep the wastewater ratio unchanged.

Optionally, the water inlet pipeline is also provided with a water inlet valve, and the water inlet valve controls the on-off of the water inlet pipeline.

Optionally, the water outlet pipeline comprises a water purifying branch and a hot water branch, and the water purifying branch can selectively discharge purified water; the hot water branch is communicated with the hot water system, and the second flow regulating device is arranged on the hot water branch.

Optionally, a water purifying valve is arranged on the water purifying branch and controls the on-off of the water purifying branch, and the water purifying valve is closed when the second flow regulating device is opened.

Optionally, the hot water system further comprises a heating module, a heat exchanger, a reversing valve and a hot water outlet, wherein the heating module is communicated with the heat exchanger, the second flow adjusting device and the reversing valve, the heat exchanger is communicated with the second flow adjusting device, the reversing valve and the hot water outlet, the reversing valve is communicated with the hot water outlet, the reversing valve is provided with a first working position and a second working position, when the reversing valve is in the first working position, hot water flowing out of the heating module flows out of the hot water outlet through the reversing valve, and when the reversing valve is in the second working position, hot water flowing out of the heating module flows into the heat exchanger through the reversing valve to cool and then flows out of the hot water outlet.

Optionally, the hot water system further comprises a third flow adjusting device, the third flow adjusting device is communicated with the second flow adjusting device, and two ports of the third flow adjusting device are respectively communicated with the water inlet of the heating module and the water inlet of the heat exchanger so as to adjust the flow entering the heating module and the heat exchanger.

Optionally, the heat exchanger comprises a hot water channel and a normal temperature water channel, hot water heated by the heating module is introduced into the hot water channel, warm water is introduced into the normal temperature water channel, and the cooled warm water is obtained after heat exchange between the hot water in the hot water channel and the normal temperature water in the normal temperature water channel and is discharged from the hot water outlet.

The utility model has the following advantages:

1. the water purification system is used for preparing purified water, the hot water system connected to the water outlet pipeline is used for heating the purified water to obtain hot water, and the water flow entering the water treatment filter element is regulated through the first flow regulating device arranged on the water inlet pipeline, so that the water flow flowing out of the water treatment filter element is controlled through the first flow regulating device, namely the flow of the purified water prepared by the whole system is controlled within the bearable range of the hot water system, furthermore, the water flow entering the hot water system from the water outlet pipeline is regulated through the second flow regulating device connected between the hot water system and the water outlet pipeline, the water flow entering the hot water system is accurately controlled, namely the water flow entering the hot water system can be accurately matched with the heating capacity of the hot water system through the double regulation cooperation of the first flow regulating device and the second flow regulating device, the situation that the water flow of the purified water cannot be completely heated is prevented, the stability of the water flow of the system is also ensured, a water storage tank for storing redundant purified water in the water outlet pipeline is not required to be additionally arranged, the water pump for pumping water from the water storage tank is also not required, the number of parts is reduced, the volume is reduced, and the noise is smaller.

2. The variable-frequency steady-pressure pump has the capacity of adjusting the water flow and keeping the water pressure stable in a variable-frequency manner, and the water flow entering the water treatment filter element is adjusted by setting the variable-frequency steady-pressure pump, so that the flow is adjusted to a certain range value, the heating capacity of the hot water system is adapted, the situation that the water cannot be completely heated due to overlarge water flow is prevented, the technology of the variable-frequency steady-pressure pump is mature, and the variable-frequency steady-pressure pump is convenient to adjust and good in stability.

3. The water inflow can be further and accurately controlled by the stepless regulating valve, the accuracy of the water flow entering the hot water system is improved, so that the heating stability and the hot water outlet stability are guaranteed, the water flow can be accurately controlled by the stepless regulating valve, the heating capacity of heating modules with different powers can be adapted, the water flow can be regulated by the stepless regulating valve through controlling the valve core opening size, the application is convenient, the intelligent degree is high, and the practicability is high.

4. When the second flow regulating device is opened, the hot water system is used for preparing hot water, the water purifying valve is closed, purified water in the water outlet pipeline completely enters the hot water system, unstable water flow in the hot water branch caused by the diversion of the water purifying branch is avoided, and therefore the stability of hot water output by the hot water system is ensured.

5. The flow rate of the water entering the heating module and the heat exchanger is adjusted through the third flow rate adjusting device, so that warm water with different temperatures can be prepared, namely multi-stage temperature water outlet is realized, and the user experience is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 shows a schematic structure of a water purifier according to an embodiment of the present utility model;

fig. 2 shows a schematic structural view of a heat exchanger according to an embodiment of the present utility model.

Reference numerals illustrate:

101. a raw water inlet; 102. a purified water outlet; 103. a concentrated water outlet; 11. a water inlet pipeline; 111. a water inlet pipeline of the filter element; 112. raw water inlet pipeline; 12. a water outlet pipeline; 121. a water purification branch; 122. a hot water branch; 123. a filter element water outlet pipeline; 131. a water treatment cartridge; 132. a composite filter element; 14. a concentrate pipeline; 20. a water inlet pipeline of the hot water system; 21. a heating module; 22. a heat exchanger; 221. a first water inlet; 222. a first water outlet; 223. a second water inlet; 224. a second water outlet; 225. a hot water waterway; 226. a normal temperature waterway; 23. a reversing valve; 24. a hot water outlet; 25. a temperature sensing bag; 31. a first flow rate adjustment device; 32. a second flow rate adjustment device; 33. a third flow rate adjustment device; 41. an adjustable waste water valve; 42. a water inlet valve; 43. a water purifying valve; 44. a first water purification check valve; 45. a second water purification check valve; 46. a hot water check valve.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

As shown in fig. 1 to 2, the water purifier of the present embodiment includes: the water purification system comprises a water inlet pipeline 11, a water treatment filter element 131 and a water outlet pipeline 12 which are sequentially connected, wherein the water treatment filter element 131 is suitable for preparing purified water, and the water inlet pipeline 11 is provided with a first flow regulating device 31 for regulating the flow of water entering the water treatment filter element 131; the hot water system is connected to the water outlet pipeline 12 to heat the purified water and discharge the hot water; a second flow regulating device 32 is connected between the hot water system and the outlet conduit 12 to regulate the flow of purified water from the outlet conduit 12 into the hot water system.

The water purifier of the embodiment is applied to prepare purified water through a water purification system, the purified water is heated by a hot water system connected to an outlet pipeline 12 to obtain hot water, and the water flow entering a water treatment filter core 131 is regulated by a first flow regulating device 31 arranged on a water inlet pipeline 11, so that the water flow flowing out of the water treatment filter core 131 is controlled by the first flow regulating device 31, namely the flow of the purified water prepared by the whole system, the flow of the purified water is controlled within the bearable range of the hot water system, further, the flow of the purified water entering the hot water system from the water outlet pipeline 12 is regulated by a second flow regulating device 32 connected between the hot water system and the outlet pipeline 12, the water flow entering the hot water system is accurately controlled, namely the water flow entering the hot water system can be accurately matched with the heating capacity of the hot water system by double regulation cooperation of the first flow regulating device 31 and the second flow regulating device 32, the condition that the water flow of the purified water cannot be completely heated is prevented from being excessively large, the stability of the water flow of the system is also ensured, the water storage tank for storing the surplus purified water in the water outlet pipeline 12 is not required, the water storage tank for storing the purified water is also arranged, the water pump volume of the water storage tank is reduced, the water pump is reduced, the volume of the water pump is reduced, and the water pump is beneficial to the water pump is reduced.

The water inlet pipe 11 has a raw water inlet 101, the water outlet pipe 12 has a purified water outlet 102, the water treatment filter 131 is used for filtering raw water to obtain purified water, and the water treatment filter 131 may be one or more of an RO membrane filter, an ultrafiltration membrane filter, a ceramic membrane filter, and a nanofiltration membrane filter. The water purification system also comprises a composite filter element 132 formed by integrating a preposed filter element and a postposition filter element, wherein the preposed filter element is in the form of PAC (programmable air controller) filter element or PP+preposed activated carbon or other filter elements, and the postposition filter element is in the form of activated carbon filter element or ultrafiltration+postposition activated carbon or other filter elements; the waterway of the composite filter element 132 is set to be in a two-in two-out mode, raw water flows in from the raw water inlet 101, enters a prepositive filter element in the composite filter element through a raw water inlet pipeline 112 for prepositive treatment, filters impurities such as sediment, rust, solid pollutants and the like in water, then flows into a water treatment filter element 131 through a filter element inlet pipeline 111 for filtering treatment, filters fine pollutants such as bacteria, viruses and the like in the water, and the filtered purified water flows out from the water treatment filter element 131, enters a postpositive filter element in the composite filter element through a filter element outlet pipeline 123 for further filtering, and residual peculiar smell, heterochromatic and the like in adsorbed water are improved, so that the taste is improved, the purified water is finally discharged from the water outlet pipeline 12.

It should be noted that, the flow rate of the water purifier on the market is generally larger, and for the water purifier with integrated heat, the water purifier is limited by the heating power of the heating module, the water purifier needs to be instantaneously heated to a boiled water state, the water purifier has a limited requirement on the water purifying flow rate entering the heating module, and the water purifier is far greater than the bearing capacity of the heating module, but the water purifier of the embodiment realizes the effect of reducing the water flow rate and matching the heating power of the heating module through the dual adjustment cooperation of the first flow adjusting device 31 and the second flow adjusting device 32.

In the present embodiment, the first flow rate adjustment device 31 is a variable-frequency steady-pressure pump. The variable-frequency steady-pressure pump has the capacity of adjusting the water flow and keeping the water pressure stable in a variable-frequency manner, and adjusts the water flow entering the water treatment filter element 131 by setting the variable-frequency steady-pressure pump, so that the flow is adjusted to a certain range value, the heating capacity of a hot water system is adapted, the situation that the water cannot be completely heated due to overlarge water flow is prevented, the technology of the variable-frequency steady-pressure pump is mature, and the variable-frequency steady-pressure pump is convenient to adjust and good in stability.

In this embodiment, the second flow rate adjustment device 32 is a stepless adjustment valve. The water flow rate regulated by the variable frequency and voltage stabilizing pump is adaptively regulated and kept stable to a certain extent, but is limited by the structure and the characteristics of the variable frequency and voltage stabilizing pump, the water flow rate can only be kept at a certain range value, the water flow rate can not be particularly accurate, the water inflow can be further and accurately controlled by arranging the stepless regulating valve, the accuracy of the water flow rate entering a hot water system is improved, the stability of heating and the stability of hot water discharging are ensured, the water flow rate can be accurately controlled by the stepless regulating valve, the heating capacity of heating modules with different powers can be adapted, the water flow rate can be regulated by the stepless regulating valve through controlling the opening size of a valve core of the stepless regulating valve, the application is convenient, the intelligent degree is high, and the practicability is high. It should be noted that, the first flow regulator 31 keeps the water flow at a certain range of values, and the difference between the value in the range and the value accurately regulated by the second flow regulator 32 is smaller, that is, the first flow regulator 31 cannot accurately control the water flow value like the second flow regulator 32, but also keeps the water flow value in a relatively stable range, so as to play a role in regulation and pressure stabilization.

In this embodiment, the water treatment filter element 131 is connected with the water inlet pipeline 11, the filter element water outlet pipeline 123 and the concentrate water pipeline 14, the water which is preliminarily filtered by the composite filter element 132 is led into the water treatment filter element 131 by the water inlet pipeline 11, the filter element water outlet pipeline 123 discharges the purified water which is filtered by the water treatment filter element 131, the concentrate water pipeline 14 discharges the waste water in the water treatment filter element 131 through the concentrate water outlet 103, the concentrate water pipeline 14 is provided with the adjustable waste water valve 41, the adjustable waste water valve 41 adjusts the water flow in the concentrate water pipeline 14 according to the water flow which enters the water treatment filter element 131, so that the ratio of the concentrated water flow in the concentrate water pipeline 14 to the water flow which enters the water treatment filter element 131 is kept constant, the waste water ratio is kept unchanged, and the stability of the purified water quality of the purified water is ensured. Specifically, when the controller detects that the water flow rate of the first flow rate adjusting device 31 adjusting the water flow entering the water treatment filter element 131 is reduced, the controller controls the valve element opening of the adjustable waste water valve 41 to be reduced so as to ensure that the waste water ratio is unchanged, and similarly, when the water flow rate of the first flow rate adjusting device 31 adjusting the water flow entering the water treatment filter element 131 is increased, the controller controls the valve element opening of the adjustable waste water valve 41 to be correspondingly increased so as to ensure that the waste water ratio is unchanged, thereby ensuring that the quality of purified water produced by the water purification system is unchanged.

In this embodiment, the water inlet valve 42 is further disposed on the water inlet pipeline 11, the water inlet valve 42 controls on/off of the water inlet pipeline 11, specifically, when water is required to be prepared, the water inlet valve 42 controls on/off of the water inlet pipeline 11, so that raw water is ensured to smoothly enter the filter element for filtration, and when the water is not required to be prepared, the water inlet valve 42 controls the water inlet pipeline 11 to be disconnected, no water flow in the water purification system flows, preferably, the water inlet valve 42 is a water inlet electromagnetic valve, and the water inlet electromagnetic valve has wide application range, simple operation and high stability.

In this embodiment, the water outlet pipeline 12 includes a water purifying branch 121 and a hot water branch 122, the water purifying branch 121 selectively discharges purified water, specifically, a water purifying valve 43 is disposed on the water purifying branch 121, the water purifying valve 43 controls on-off of the water purifying branch 121, unheated purified water is discharged in the water purifying branch 121, when a user needs to directly use unheated purified water, the water purifying valve 43 is opened to conduct the water purifying branch 121, purified water in the water outlet pipeline 12 is discharged from the purified water outlet 102 after passing through the water purifying branch 121, and when unheated purified water is not needed to be directly discharged, the water purifying valve 43 is closed to disconnect the water purifying branch 121, purified water cannot be discharged from the purified water outlet 102, preferably, the water purifying valve 43 is a water purifying electromagnetic valve, and the electromagnetic valve has wide application, simple operation and high stability; the hot water branch 122 is communicated with a hot water system, the second flow regulating device 32 is arranged on the hot water branch 122, specifically, the hot water branch 122 guides the purified water in the water outlet pipeline 12 to the hot water system, and the second flow regulating device 32 can directly control the water flow in the hot water branch 122, so that the water flow entering the hot water system is controlled, and the structure is simple and the operation is convenient.

In the present embodiment, the water purge valve 43 is closed when the second flow rate adjustment device 32 is opened. It should be noted that when the second flow regulator 32 is turned on, the water heating system is used for preparing hot water, and the water purifying valve 43 is turned off, so that the purified water in the water outlet pipeline 12 completely enters the water heating system, and the unstable water flow in the water heating branch 122 caused by the diversion of the water purifying branch 121 is avoided, thereby ensuring the stability of the hot water outlet of the water heating system. Preferably, an intelligent faucet is arranged at the hot water outlet 24 at the tail end of the hot water system, and a controller in the intelligent faucet controls the closing or opening of the water purifying valve 43 according to whether hot water is required to be produced.

In this embodiment, the hot water system further includes a heating module 21, a heat exchanger 22, a reversing valve 23 and a hot water outlet 24, where the heating module 21 is communicated with the heat exchanger 22, the second flow adjusting device 32 and the reversing valve 23, the heat exchanger 22 is communicated with the second flow adjusting device 32, the reversing valve 23 and the hot water outlet 24, the reversing valve 23 is communicated with the hot water outlet 24, the reversing valve 23 is a two-in reversing valve, the reversing valve 23 has a first working position and a second working position, when the reversing valve 23 is in the first working position, hot water flowing out of the heating module 21 flows out of the hot water outlet 24 through the reversing valve 23, and when the reversing valve 23 is in the second working position, hot water flowing out of the heating module 21 flows into the heat exchanger 22 through the reversing valve 23 to be cooled and then flows out of the hot water outlet 24. The water outlet mode is controlled through the reversing valve 23, so that the control is convenient, the reliability is high, and the user experience is improved. Wherein, heating module 21 is arranged in the water purification in the heating pipeline, and preferably, heating module 21 is the instant heating module, can heat the water purification fast, and the heating rate is fast, and user experience is good.

In this embodiment, the heat exchanger 22 includes a hot water channel 225 and a normal temperature water channel 226, hot water heated by the heating module 21 is introduced into the hot water channel 225, normal temperature water is introduced into the normal temperature water channel 226, the hot water in the hot water channel 225 and the normal temperature water in the normal temperature water channel 226 are subjected to heat exchange to obtain cooled warm water, and the cooled warm water is discharged from the hot water outlet 24, wherein the normal temperature water refers to unheated water directly introduced into the hot water system by the hot water branch 122. When the reversing valve 23 is in the first working position, the hot water heated by the heating module 21 is directly discharged without being cooled by the heat exchanger 22, that is, the hot water at 100 ℃ is discharged from the hot water outlet 24; when the reversing valve 23 is in the second working position, the hot water heated by the heating module 21 is cooled by the heat exchanger 22 and then discharged, namely the cooled warm water is discharged from the hot water outlet 24, specifically, the hot water flowing out of the heating module 21 enters the hot water channel 225 through the first water inlet 221 after passing through the reversing valve 23 and is then discharged to the hot water outlet 24 through the first water outlet 222; the hot water waterway 225 has a first water inlet 221 and a first water outlet 222, the normal temperature waterway 226 has a second water inlet 223 and a second water outlet 224, the purified water flowing through the second flow regulating device 32 enters the water inlet pipeline 20 of the hot water system, a part of the purified water in the water inlet pipeline 20 of the hot water system flows into the normal temperature waterway 226 through the second water inlet 223 and then is discharged from the second water outlet 224 and enters the heating module 21, in the process, the hot water in the hot water waterway 225 is subjected to heat exchange with the cold water in the normal temperature waterway 226, so that the temperature of the hot water discharged from the first water outlet 222 is reduced, the effect of reducing the temperature of the hot water is realized, the heat exchanger 22 also realizes the preheating function of the water in the normal temperature waterway 226 while realizing the water cooling function of the hot water waterway 225, and the water temperature in the normal temperature waterway 226 is increased after the heat exchange in the heat exchanger 22 and then enters the heating module 21 for heating.

In this embodiment, the hot water system further includes a third flow rate adjusting device 33, the third flow rate adjusting device 33 is communicated with the second flow rate adjusting device 32, and two ports of the third flow rate adjusting device 33 are respectively communicated with the water inlet of the heating module 21 and the water inlet of the heat exchanger 22 to adjust the flow rates entering the heating module 21 and the heat exchanger 22. Specifically, the third flow regulator 33 is disposed on the water inlet pipeline 20 of the hot water system, the third flow regulator 33 is disposed between the second flow regulator 32 and the heating module 21, a branch communicated with the second water inlet 223 is connected between the second flow regulator 32 and the third flow regulator 33, a branch communicated with the second water outlet 224 is connected between the third flow regulator 33 and the heating module 21, when the water flow on the water inlet pipeline 20 of the hot water system is constant and the reversing valve 23 is in the second working position, the third flow regulator 33 regulates the water flow entering the heating module 21, meanwhile, the rest water in the water inlet pipeline 20 of the hot water system enters the normal-temperature waterway 226 of the heat exchanger 22, the smaller the opening of the third flow regulator 33 is, the larger the water flow entering the heating module 21 is, and correspondingly, the cooling effect of the normal-temperature waterway 226 on the cooled hot water of the hot water waterway 225 is better, the temperature of the cooled hot water outlet 24 is lower, so that different temperatures can be obtained by regulating the flow of the third flow regulator 33 into the heating module 21 and the heat exchanger 22, and the user experience of multiple temperature feeling can be improved.

Preferably, the third flow rate adjusting device 33 is an adjusting valve, and the adjusting valve is mature in technology and convenient to operate.

Preferably, an intelligent faucet is arranged at the hot water outlet 24 at the tail end of the hot water system, and the opening size of the third flow adjusting device 33 can be adjusted according to the selected outlet water temperature according to the control of the intelligent faucet, so that water with different temperatures can flow out from the hot water outlet 24.

Preferably, the water purification system further comprises: a first water purifying check valve 44, the first water purifying check valve 44 being provided on the cartridge water outlet pipe 123 to prevent water in the cartridge water outlet pipe 123 from flowing back into the water treatment cartridge 131; a second water purifying check valve 45 provided between the water purifying valve and the water purifying outlet 102 to prevent the water in the water purifying branch 121 from flowing back into the water outlet pipe 12 or the hot water branch 122; a hot water check valve 46 is provided in the reversing valve and the hot water outlet 24 to prevent backflow of hot water at the hot water outlet 24.

Preferably, the hot water system further includes a bulb 25, the bulb 25 being disposed between the heating module 21 and the reversing valve 23 to detect the temperature of the hot water heated via the heating module 21.

From the above description, it can be seen that the above-described embodiments of the present utility model achieve the following technical effects:

the adjustable waste water valve 41, the stepless regulating valve and the pressure stabilizing pump are arranged in the system to regulate the flow of purified water entering the heating system in a variable pressure mode, a water tank and a small water suction pump are not required to be added, the system is simplified, and the whole volume of the water purifier is reduced; and by adding the heat exchanger, the function of multi-stage temperature water outlet is realized.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (10)

1. A water purifier, comprising:

the water purification system comprises a water inlet pipeline (11), a water treatment filter element (131) and a water outlet pipeline (12) which are sequentially connected, wherein the water treatment filter element (131) is suitable for preparing purified water, and a first flow regulating device (31) is arranged on the water inlet pipeline (11) so as to regulate the flow of water entering the water treatment filter element (131);

a hot water system connected to the water outlet pipe (12) to heat the purified water and discharge hot water;

and a second flow regulating device (32) connected between the hot water system and the water outlet pipeline (12) for regulating the flow of purified water entering the hot water system from the water outlet pipeline (12).

2. The water purifier according to claim 1, wherein the first flow rate adjusting device (31) is a variable frequency pressure stabilizing pump.

3. The water purifier according to claim 1, wherein the second flow regulating device (32) is a stepless regulating valve.

4. The water purifier according to claim 1, wherein the water treatment filter element (131) is connected with the water inlet pipeline (11), a filter element water outlet pipeline (123) and a concentrated water pipeline (14), the filter element water outlet pipeline (123) discharges purified water, the concentrated water pipeline (14) discharges waste water, the concentrated water pipeline (14) is provided with an adjustable waste water valve (41), and the adjustable waste water valve (41) adjusts the water flow in the concentrated water pipeline (14) according to the water flow entering the water treatment filter element (131) so as to keep the waste water ratio unchanged.

5. The water purifier according to claim 1, wherein the water inlet pipeline (11) is further provided with a water inlet valve (42), and the water inlet valve (42) controls on-off of the water inlet pipeline (11).

6. The water purifier according to claim 1, wherein the water outlet pipeline (12) comprises a water purification branch (121) and a hot water branch (122), the water purification branch (121) selectively discharging the purified water; the hot water branch (122) is communicated with the hot water system, and the second flow regulating device (32) is arranged on the hot water branch (122).

7. The water purifier according to claim 6, wherein a water purifying valve (43) is arranged on the water purifying branch (121), the water purifying valve (43) controls the on-off of the water purifying branch (121), and the water purifying valve (43) is closed when the second flow regulating device (32) is opened.

8. The water purifier according to any one of claims 1 to 7, wherein the water heating system further comprises a heating module (21), a heat exchanger (22), a reversing valve (23) and a hot water outlet (24), wherein the heating module (21) is communicated with the heat exchanger (22), the second flow regulating device (32) and the reversing valve (23), the heat exchanger (22) is communicated with the second flow regulating device (32), the reversing valve (23) and the hot water outlet (24), the reversing valve (23) is communicated with the hot water outlet (24), the reversing valve (23) has a first working position and a second working position, when the reversing valve (23) is in the first working position, hot water flowing out of the heating module (21) flows out of the hot water outlet (24) through the reversing valve (23), and when the reversing valve (23) is in the second working position, hot water flowing out of the heating module (21) flows into the heat exchanger (22) through the reversing valve (23) and then flows out of the hot water outlet (24).

9. The water purifier according to claim 8, characterized in that the water heating system further comprises a third flow regulating device (33), the third flow regulating device (33) is communicated with the second flow regulating device (32) and two ports of the third flow regulating device (33) are respectively communicated with the water inlet of the heating module (21) and the water inlet of the heat exchanger (22) to regulate the flow into the heating module (21) and the heat exchanger (22).

10. The water purifier according to claim 8, wherein the heat exchanger (22) comprises a hot water waterway (225) and a normal temperature waterway (226), hot water heated by the heating module (21) is introduced into the hot water waterway (225), normal temperature water is introduced into the normal temperature waterway (226), and the cooled warm water is obtained after the hot water in the hot water waterway (225) and the normal temperature water in the normal temperature waterway (226) are subjected to heat exchange and is discharged from the hot water outlet (24).

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