CN221821946U - Water purifier - Google Patents

Abstract

The utility model provides a water purifier which comprises a raw water inlet, a water intake and a main pipeline connected between the raw water inlet and the water intake, wherein a central filtering component, a zero-pressure valve and a water pump are sequentially arranged on the main pipeline along the water flow direction, and the water outlet flow of the water pump is adjustable. The central filter assembly may provide a user with quality clean water. For the central filter element with large flux, compared with the water tank arranged on the main pipeline and the zero-pressure valve arranged on the main pipeline, the volume of the water purifier cannot be increased, the water pressure of the front-section waterway can be prevented from affecting the water outlet flow of the water pump with adjustable flow, and the water flow of the water pump to the water intake can be accurately regulated. In addition, the pressure of the purified water passing through the zero-pressure valve is close to 0, so that a water outlet control valve is not required to be arranged, and the cost 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 progress of technology, the requirements of users on the water purifier are no longer satisfied with providing only basic functions such as water purification, and the intelligent degree of the water purifier is expected to be higher. For example, it is desirable that the flow rate of purified water of the water purifier can be adjusted. In the case where the water intake amount set by the user is small, it is desirable that the flow rate of purified water is low, or that the flow rate is high at the beginning and low at the end of taking water, so that the water intake amount can be accurately controlled. Or the current water purifier generally has a heating function, when the water taking temperature of a user is high, the water purifying flow is expected to be low, and when the water taking temperature of the user is low, the water purifying flow is expected to be high.

In order to adjust the flow rate of purified water, a water tank needs to be provided in the water purifier. For a small-flux water purifier, which already contains a water tank inside, the purified water prepared by the filter cartridge can be stored in the water tank and then extracted from the water tank according to the desired purified water flow. However, for a high-flux water purifier, the water tank is not used for storing purified water prepared in advance, but is used for buffering redundant purified water prepared by the filter element when the flow rate of the purified water is small.

The structure of the small-flux water purifier is not greatly changed by adopting the scheme, because the current small-flux water purifier is provided with a water tank. However, the influence on the large-flux water purifier is great, and the existing large-flux water purifier usually does not contain a water tank, so that the large-flux water purifier has the advantages of small size, fresh purified water and the like. The provision of a water tank results in a high-throughput water purifier losing the above advantages and also increasing its cost, for example, a sterilizing device or the like may be required to ensure freshness of the water quality in the water tank.

Disclosure of utility model

In order to at least partially solve the problems existing in the prior art, according to one aspect of the present utility model, there is provided a water purifier including a raw water inlet, a water intake, and a main pipe connected between the raw water inlet and the water intake, the main pipe being sequentially provided with a central filter assembly, a zero pressure valve, and a water pump along a water flow direction, a water outlet flow rate of the water pump being adjustable.

The central filter assembly may provide a user with quality clean water. For the central filter element with large flux, compared with the water tank arranged on the main pipeline and the zero-pressure valve arranged on the main pipeline, the volume of the water purifier cannot be increased, the water pressure of the front-section waterway can be prevented from affecting the water outlet flow of the water pump with adjustable flow, and the water flow of the water pump to the water intake can be accurately regulated. In addition, the pressure of the purified water passing through the zero-pressure valve is close to 0, so that a water outlet control valve is not required to be arranged, and the cost is reduced.

Illustratively, the water purifier further comprises a heating assembly, wherein the heating assembly is disposed on the main pipeline downstream of the zero pressure valve.

The heating component can heat the purified water and output hot water with proper flow to a user through the water pump so as to meet diversified demands of the user.

Illustratively, the heating assembly is serially connected to the intake.

Illustratively, the heating assembly is an instant heating assembly that does not operate when the intake outputs warm water.

In the embodiment, the water path has simple structure, low cost and difficult water leakage point because the water and the hot water share one pipeline, and a reversing valve and other structures are not needed.

Illustratively, the heating assembly includes a heating faucet connected in series to the water intake.

Illustratively, the water purifier further includes a water outlet connected to the water intake of the water purifier.

In the technical scheme, the zero-pressure valve part replaces the function of a switch, so that the water purifier can be free from additionally arranging a waterway switch, and the cost is reduced.

The water purifier further comprises a controller, the water pump is electrically connected with the controller, and the controller is used for controlling the flow of the water pump according to the water taking temperature of a user and the heating power of the heating assembly.

This ensures that the user-temperature hot water is delivered from the water intake without exceeding the rated power.

The water purifier further comprises a return line, wherein a water inlet of the return line is connected to the main line between the central filter assembly and the zero-pressure valve, a water outlet of the return line is connected to the water inlet of the central filter assembly, and the return line is provided with a one-way valve.

The one-way valve prevents unfiltered raw water from being mixed into the purified water from the return line. The one-way valve can have opening water pressure, so that the purified water can be prevented from flowing back into the tap water pipe network in a large amount.

Illustratively, the rated outlet flow of the water pump is greater than the rated product flow of the central filter assembly.

Therefore, when a user takes the warm water, the water pump can pump water with rated water outlet flow, so that the whole purified water of the central filter assembly is pumped and pumped to the water intake, and the water outlet flow cannot be influenced.

Illustratively, the water purifier further comprises:

The pre-filter assembly is arranged on the main pipeline and is positioned upstream of the central filter assembly.

Illustratively, the water purifier further includes a water inlet solenoid valve disposed on the main pipeline upstream of the central filter assembly.

The prepositive filter assembly is positioned in front of the central filter assembly, and can perform primary filtration on water entering the central filter assembly, filter out impurities with larger particles such as sediment, rust and the like, so as to prolong the service life of the central filter assembly.

Illustratively, the central filter assembly is a large flux filter assembly.

The water purifier of the large flux filtering component has small volume and fresh purified water.

Illustratively, the central filter assembly includes a booster pump and a reverse osmosis cartridge arranged in series in the direction of water flow.

The reverse osmosis filter element can provide high-quality purified water for users.

In the summary, a series of concepts in a simplified form are introduced, which will be further described in 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.

Advantages and features of the utility model are described in detail below with reference to the accompanying drawings.

Drawings

The following drawings are included to provide an understanding of the utility model and are incorporated in and constitute a part of this specification. Embodiments of the present utility model and their description are shown in the drawings to explain the principles of the utility model. In the drawings of which there are shown,

Fig. 1 is a waterway diagram of a water purifier according to an exemplary embodiment of the present utility model;

Fig. 2 is a waterway diagram of a water purifier according to another exemplary embodiment of the present utility model; and

Fig. 3 is a waterway diagram of a water purifier according to still another exemplary embodiment of the present utility model.

Wherein the above figures include the following reference numerals:

101. A raw water inlet; 102. a water intake; 103. a main pipeline; 104. a water outlet; 105. a concentrate pipeline; 110. a central filter assembly; 111. a booster pump; 112. a central filter element; 120. a zero pressure valve; 130. a water pump; 140. a heating assembly; 141. a first stage heating assembly; 142. a second stage heating assembly; 150. a tap; 160. a return line; 161. a one-way valve; 170. a pre-filter assembly; 180. a water inlet electromagnetic valve; 190. a concentrated water electromagnetic valve.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the utility model. However, it will be understood by those skilled in the art that the following description illustrates preferred embodiments of the utility model by way of example only and that the utility model may be practiced without one or more of these details. Furthermore, some technical features that are known in the art have not been described in detail in order to avoid obscuring the utility model.

According to one aspect of the present utility model, a water purifier is provided, which can be used as a bench-type water purifier, a wall-mounted water purifier, or a kitchen-type water purifier. As shown in fig. 1, the water purifier may include a raw water inlet 101, a water intake 102, and a main pipe 103 connected between the raw water inlet 101 and the water intake 102. The main pipe 103 is provided with a central filter assembly 110, a zero pressure valve 120 and a water pump 130 in this order along the water flow direction. The water outlet flow rate of the water pump 130 is adjustable. The central filter assembly 110 may include a booster pump 111 and a central filter element 112 arranged in series in the direction of water flow. By way of example, the central filter element 112 may include one or more of a reverse osmosis filter element, a nanofiltration filter element, a composite filter element composited with a reverse osmosis filter element, and a composite filter element composited with a nanofiltration filter element. The aperture of the reverse osmosis filter element is one fifth (0.1 nanometer) of the hair, and the reverse osmosis filter element has the strongest separating capacity at present. The nanofiltration filter core comprises a nanofiltration membrane, wherein the nanofiltration membrane is a charged membrane and can perform electric adsorption. The water is produced under the same water quality and environment, and the pressure required by the nanofiltration membrane is smaller than the pressure required by the reverse osmosis membrane. The separation performance of the nanofiltration filter core is obviously superior to that of the ultrafiltration filter core, the microfiltration filter core and the like, and compared with the reverse osmosis filter core, the nanofiltration filter core has the advantages of partial removal of monovalent ions, low process osmotic pressure, low operation pressure, energy saving and the like, but the separation capacity is slightly worse than that of the reverse osmosis filter core. The booster pump 111 may provide the pressure required for operation of the reverse osmosis and/or nanofiltration cartridges. The reverse osmosis filter element and the nanofiltration filter element can produce a certain proportion of concentrated water during operation. The concentrate outlet of the central cartridge 112 communicates to the drain outlet 104 via a concentrate line 105. The central cartridge 122, which is rated for daily water production, is a large flux cartridge with daily water production greater than or equal to 400 gallons, and a small flux cartridge with daily water production less than 400 gallons. Illustratively, a concentrate solenoid valve 190 may be provided on the concentrate line 105. When the concentrated water valve 190 is closed, the concentrated water valve 190 can allow the concentrated water generated when the central filter element 112 prepares water to be discharged normally, and can maintain the pressure required by the operation of the central filter element 112; when the concentrate solenoid valve 190 is open, the central cartridge 112 may be flushed, thereby extending the life of the central cartridge 112.

Illustratively, the raw water inlet 101 may be connected to municipal tap water, which is pressurized by the booster pump 111 and filtered through the central filter element 112 to obtain purified water. The purified water may have a certain pressure, and thus, a zero-pressure valve 120 may be provided to isolate the pressure. The zero-pressure valve 120 is a pressure reducing device that can offset the water pressure by the pressure generated by the internal elastic member so that the pressure of the output water is close to 0. The rear end of the zero-pressure valve 120 is connected with a water pump 130, the water pump 130 can comprise a diaphragm pump, and the water outlet flow of the water pump 130 can be adjusted. The pressure of the purified water passing through the zero-pressure valve 120 is close to 0, so that no water flow is outputted without turning on the water pump 130. Illustratively, the outlet flow of the water pump 130 may be adjusted by adjusting the voltage of the water pump 130. In general, when the pressure of the water inlet end of the water pump 130 is changed, the water outlet flow rate of the water pump 130 is affected even if the voltage is unchanged. In the embodiment shown in fig. 1, since the water inlet end of the water pump 130 is connected to the water outlet of the zero-pressure valve 120, it is ensured that the water inlet pressure of the water pump 130 is hardly changed and is close to zero, so that no matter how the water pressure at the purified water outlet of the central filter assembly 110 is changed (for example, the raw water pressure is changed, the water pressure at the purified water outlet of the central filter assembly 110 may be changed due to different use time of the central filter assembly 110), the water outlet flow of the water pump 130 is not affected. Thus, the water pump 130 can control the water flow rate delivered to the intake 102 more precisely. On the other hand, since the pressure of the water outlet end of the zero-pressure valve 120 is close to 0, the water pump 130 also has a function of pumping clean water to the water intake 102.

In the above technical solution, the central filter assembly 110 can remove bacteria and heavy metal impurities harmful to human body, ensure drinking water quality of users, and provide high-quality purified water for users. For the large-flux central filter element, compared with the scheme of arranging a water tank on a main pipeline to prevent the influence of the water pressure of a front-stage waterway, the volume of the water purifier cannot be increased by arranging the zero-pressure valve 120 on the main pipeline 103, and the water pressure of the front-stage waterway can be prevented from influencing the water outlet flow of the water pump 130 with adjustable flow, so that the water flow delivered to the water intake 102 can be accurately regulated by the water pump 130. In addition, the pressure of the purified water passing through the zero-pressure valve 120 is close to 0, so that no water flow is output at the water intake 102 without starting the water pump 130. Therefore, a water outlet control valve is not required to be arranged, and the cost is further reduced.

In an embodiment not shown, the central filter assembly may also include a central filter assembly that does not require a booster pump, such as one or more of a microfiltration cartridge and an ultrafiltration cartridge, which may perform a filtration function solely by the water pressure of municipal tap water.

Illustratively, the water purifier may further include a heating assembly 140, and the heating assembly 140 may be disposed on the main line 103 downstream of the zero pressure valve 120. With continued reference to fig. 1, a heating assembly 140 may be disposed downstream of the water pump 130. Water passing through the zero pressure valve 120 may be pumped by a water pump 130 into a heating assembly 140.

Illustratively, the heating assembly 140 may include an instant heating assembly through which purified water may be provided to a user directly after heating. The instant heating type heating component can rapidly heat the flowing purified water, and when the water flow changes, the temperature of the hot water also changes. Thus, the water pump 130 can adjust the flow according to the power of the instant heating assembly, the preset temperature and the normal temperature water temperature, so that the output hot water temperature reaches the desired water taking temperature of the user.

The heating assembly 140 may also be a heat storage heating assembly, such as a hot tank. The heat storage type heating assembly may heat the purified water stored therein. The water pump 130 can press out the hot water in the heat storage type heating assembly to the water intake 102 by delivering the purified water to the water inlet of the heat storage type heating assembly, so that the flow rate of the outputted hot water is the same as the flow rate of the purified water pumped by the water pump 130. Since the amount of water in the heat storage type heating element is generally large (e.g., 2L), changing the inflow rate of water to the heat storage type heating element has less influence on the temperature of hot water output from the heat storage type heating element than the instant heating element, and the change in the water temperature in the heat storage type heating element is small when taking water. In embodiments where the heating assembly 140 employs a heat storage heating assembly, the output flow of the water pump 130 is independent of the outlet water temperature, but may be related to the user's intake water flow. At this time, the water purifier may output hot water of a user's desired flow rate.

Illustratively, the heating assembly 140 may include a first stage heating assembly 141 and a second stage heating assembly 142. As shown in fig. 2, the purified water may be preheated by the first stage heating assembly 141, then secondarily heated by the second stage heating assembly 142, and provided to the user. Wherein the first stage heating assembly 141 may comprise a heat storage type heating assembly, such as a hot tank. The heat storage type heating component can heat the purified water to a lower first temperature, and then the purified water is output after being heated again through the second-stage heating component, so that the desired water taking temperature is achieved. Preferably, the second stage heating assembly 142 is an instant heating assembly, and the power of the second stage heating assembly 142 and the flow rate of the water pump 130 can be controlled so that the temperature of the output hot water accurately reaches the desired intake temperature. Of course, alternatively, the first stage heating assembly 141 may be an instant heating assembly, and the purified water is heated through the first stage heating assembly 141 for the first time and then through the second stage heating assembly 142 for the second time.

In the embodiment shown in fig. 1, the heating assembly 140 may be disposed on the main conduit 103 downstream of the water pump 130. In an embodiment not shown, the heating assembly 140 may also be disposed in series between the zero pressure valve 120 and the water pump 130. For example, the heating assembly 140 may also be connected in series to the intake 102. As previously described, where the heating assembly 140 comprises a multi-stage heating assembly, the first stage heating assembly 141 may be disposed on the main conduit 103 while the second stage heating assembly 142 is connected in series to the intake 102. For example, as shown in fig. 2, the second stage heating assembly 142 may be connected in series to the intake 102, in which case the second stage heating assembly 142 may be a heated faucet. Alternatively, in the case of a primary heating assembly only, the heating assembly may be a heating faucet.

The heating assembly 140 may heat the purified water and output an appropriate flow of the hot water to the user through the water pump 130 and the tap 150 to meet diverse needs of the user.

Illustratively, in embodiments where heating assembly 140 is an instant heating assembly, heating assembly 140 does not operate when intake 102 outputs water at an instant temperature. Referring back to fig. 1, the heating assembly 140 may not include a hot tank, but only an instant heating assembly. The instant heating assembly may include a thick film heating body, an electromagnetic heating tube, and the like. The instant heating assembly can heat water from normal temperature to user water intake temperature in a short time (the time that water flows from the instant heating assembly) under the working state, and under the condition that the instant heating assembly does not work, even if the working state is just switched to the non-working state, the passing water temperature can be quickly restored to normal temperature. Therefore, when the user takes the warm water, the water can be directly taken through the same water intake 102. It will be appreciated that after the hot water at a higher temperature is taken, as some hot water remains in the pipe, a portion of the higher temperature water will be present when the user is immediately taking the hot water. In the example shown in FIG. 1, the hot water is taken immediately after the hot water is taken, and the first 50mL or so is the hot water. Optionally, the rated water outlet flow rate of the water pump 130 may be greater than the rated water flow rate of the central filter assembly 110, so that the water pump 130 can pump water at the rated water outlet flow rate when the user takes the water at the rated water outlet flow rate, so as to ensure that the water outlet flow rate is not affected when the water at the central filter assembly 110 is pumped and pumped to the water intake 102.

In the embodiment, the water path has simple structure, low cost and difficult water leakage point because the water and the hot water share one pipeline, and a reversing valve and other structures are not needed.

Illustratively, the water purifier may further include a spout connected to the water intake 102 of the water purifier. Since the zero-pressure valve 120 is provided, water does not flow out from the water outlet nozzle when the water pump 130 is not operated. The water outlet nozzle is not provided with a switch structure, so that the cost is reduced. Similarly, the heating faucet described above may or may not include a valve to control the on/off of the waterway.

In the above technical solution, since the zero-pressure valve 120 partially replaces the function of a switch, the water purifier can be provided without an additional waterway switch, thereby reducing the cost.

Illustratively, the water purifier may further include a controller, and the water pump 130 may be electrically connected to the controller. The controller may be used to control the flow of the water pump 130 according to the user water intake temperature and the heating power of the heating assembly 140. 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. Since the power of the household electricity is not usually too high (3300 w), if the user wants to take hot water with a high temperature, the flow rate of the discharged water needs to be controlled, so that it is ensured that the hot water with the temperature taken by the user is output from the water intake 102 without being higher than the rated power.

Illustratively, as shown in fig. 3, the water purifier may further include a return line 160, a water inlet of the return line 160 may be connected to the main line 103 between the central filter assembly 110 and the zero pressure valve 120, and a water outlet of the return line 160 may be connected to a water inlet of the central filter assembly 110. Referring back to fig. 1, taking the central filter element 112 as an example of the reverse osmosis filter element, when the water outlet flow of the water pump 130 is smaller than the water flow of the central filter element 112, the pressure of the pipeline between the clean water outlet of the central filter element 112 and the zero pressure valve 120 is relatively high due to the zero pressure valve 120, and the pressure of the pipeline between the interior of the central filter element 112 and the raw water inlet of the booster pump 111 and the central filter element 112 may be increased to some extent. At this time, the flow rate of the concentrated water increases to some extent, and the possibility of water leakage of the pipeline increases. To avoid this, a return line 160 may be provided to return excess clean water from the clean water outlet of the central filter element 112 to the upstream of the lower pressure booster pump 111. Illustratively, the return line 160 may be provided with a one-way valve 161. Illustratively, the check valve 161 may be a check valve that automatically opens when a predetermined water pressure is reached, and the opening water pressure of the check valve 161 may be between 0.3 and 2 bar. When the downstream water path pressure of the central filter assembly 110 is greater than the tap water pressure and the pressure difference reaches a predetermined water pressure, the purified water may flow from the purified water outlet of the central filter cartridge 112 to the water inlet of the booster pump 111 through the check valve 161.

By providing the return line 160, the surplus clean water can be returned to the booster pump 111 and then re-used for water production. Thus, the system pressure can be effectively reduced. The check valve 161 can prevent unfiltered raw water from being mixed into purified water from the return line 160. The one-way valve can have opening water pressure, so that the purified water can be prevented from flowing back into the tap water pipe network in a large amount.

Illustratively, the water purifier may further include a pre-filter assembly 170, and the pre-filter assembly 170 may be disposed on the main conduit 103 upstream of the central filter assembly 110. Illustratively, the pre-filter assembly 170 may include one or more of an activated carbon filter cartridge, a PP cotton filter cartridge, a plurality of composite filter cartridges therein, and the like. The pre-filter assembly 170 is located before the central filter assembly 110, and can perform primary filtration on the water entering the central filter assembly 110 to remove impurities with larger particles such as sediment, rust, etc., so as to prolong the service life of the central filter assembly 110.

Illustratively, the water purifier may further include a water inlet solenoid valve 180, and the water inlet solenoid valve 180 may be disposed on the main line 103 upstream of the central filter assembly 110. Since the raw water inlet 101 is generally connected to municipal tap water, the municipal tap water has a certain pressure. The booster pump 111 is typically a diaphragm pump, which does not have a cutoff function. In other words, in the case where the water purifier is not operated, when the water of the raw water inlet 101 thereof has a certain pressure, the water flows through the booster pump 111. When the filter element such as the reverse osmosis filter element or the nanofiltration filter element is adopted, the water inlet electromagnetic valve 180 is arranged because the filter element is provided with the water outlet 104, so that the raw water can be prevented from flowing out from the water outlet 104 to waste resources when the water purifier is not in operation. The water inlet solenoid valve 180 may be electrically connected to the controller and automatically opened when a user takes water.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front", "rear", "upper", "lower", "left", "right", "transverse", "vertical", "horizontal", and "top", "bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely for convenience of describing the present utility model and simplifying the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, without limiting the scope of protection of the present utility model; the orientation terms "inner" and "outer" refer to the inner and outer relative to the outline of the components themselves.

For ease of description, regional relative terms, such as "over … …," "over … …," "on the upper surface of … …," "over," and the like, may be used herein to describe regional positional relationships of one or more components or features to other components or features shown in the figures. It will be understood that the relative terms of regions include not only the orientation of the components illustrated in the figures, but also different orientations in use or operation. For example, if the element in the figures is turned over entirely, elements "over" or "on" other elements or features would then be included in cases where the element is "under" or "beneath" the other elements or features. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". Moreover, these components or features may also be positioned at other different angles (e.g., rotated 90 degrees or other angles), and all such cases 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 exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, components, assemblies, and/or combinations thereof.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein.

The present utility model has been illustrated by the above-described embodiments, but it should be understood that the above-described embodiments are for purposes of illustration and description only and are not intended to limit the utility model to the embodiments described. In addition, it will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that many variations and modifications are possible in light of the teachings of the utility model, which variations and modifications are within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (8)

1. The water purifier is characterized by comprising a raw water inlet, a water intake, a heating assembly and a main pipeline connected between the raw water inlet and the water intake, wherein a central filtering assembly, a zero-pressure valve and a water pump are sequentially arranged on the main pipeline along the water flow direction, and the water outlet flow of the water pump is adjustable; wherein the method comprises the steps of

The heating component is arranged on the main pipeline and positioned at the downstream of the zero-pressure valve, or the heating component is connected in series to the water intake,

The heating component is an instant heating component, and does not work when the water intake outputs the water with the same temperature, so that the water with the same temperature and the same temperature are output by the same pipeline.

2. The water purifier of claim 1, wherein the heating assembly comprises a heating faucet connected in series to the water intake.

3. The water purifier of claim 1, further comprising a spout connected to a water intake of the water purifier.

4. The water purifier of claim 1, further comprising a controller, wherein the water pump is electrically connected to the controller, wherein the controller is configured to control the flow rate of the water pump based on a user water intake temperature and a heating power of the heating assembly.

5. The water purifier of claim 1, further comprising a return line having a water inlet connected to the main line between the central filter assembly and the zero pressure valve, a water outlet connected to the water inlet of the central filter assembly, and a one-way valve disposed on the return line.

6. The water purifier of claim 1, wherein the rated outlet flow of the water pump is greater than the rated flow of the water produced by the central filter assembly.

7. The water purifier according to claim 1, the water purifier is characterized by further comprising:

A pre-filter assembly disposed on the main conduit and upstream of the central filter assembly; and/or

And the water inlet electromagnetic valve is arranged on the main pipeline and is positioned at the upstream of the central filtering component.

8. The water purifier of claim 1, wherein the water purifier comprises a water inlet and a water outlet,

The central filter assembly is a large flux filter assembly; and/or

The central filter assembly comprises a booster pump and a reverse osmosis filter element which are arranged in series along the water flow direction.