CN214360805U

CN214360805U - Instant heating type water purifier

Info

Publication number: CN214360805U
Application number: CN202023082154.XU
Authority: CN
Inventors: 周栋; 张涛; 龚圆杰; 何海; 赵保文
Original assignee: Chunmi Technology Shanghai Co Ltd
Current assignee: Chunmi Technology Shanghai Co Ltd
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2021-10-08
Anticipated expiration: 2030-12-18

Abstract

The present disclosure relates to an instant-heating type water purifier, including: one end of the cold water pipeline is a cold water outlet of the water purifier, the other end of the cold water pipeline is communicated with a water outlet of the post-positioned filter element, and a second electromagnetic valve is arranged on the cold water pipeline; one end of the hot water pipeline is a hot water outlet of the water purifier, the other end of the hot water pipeline is communicated with a water outlet of the post-positioned filter element, a third electromagnetic valve is arranged on the hot water pipeline, a water suction pump on the third electromagnetic valve is positioned between the first pressure stabilizing valve and the instant heating device, and the instant heating device is positioned between the water suction pump and the hot water outlet; the return pipeline returns the produced pure water to the front of the water inlet of the reverse osmosis filter element, and the return pipeline is provided with a fourth electromagnetic valve and a return check valve. This technical scheme can avoid appearing that first cup water TDS is higher, for the user provides hot water, reduces the accumulation of incrustation scale in the device that generates heat promptly, controls the play water temperature of device that generates heat promptly accurately.

Description

Instant heating type water purifier

Technical Field

The present disclosure relates to the field of water purification technology, and in particular, to an instant heating water purifier.

Background

Along with the improvement of living standard of people, people pay more and more attention to water quality sanitation, and a trend of equipping a water purifier for families is formed; if the water purifier does not use for a long time, the ion before the RO membrane in the RO (Reverse Osmosis) filter core in the water purifier can pass the RO membrane and permeate the pure water end, it is higher to lead to first glass water TDS (Total dissolved solids), influence user experience, and the water purifier does not have the heating function, can't satisfy consumer's hot water demand, and because the problem that first glass water TDS is high, even directly add the heating device in the water purifier and also can make TDS higher in the heating device, easily at the internal incrustation scale of heating device, and because water purifier play water velocity temperature, can lead to the hot water flow uncontrollable, and then produce the problem of uncontrollable hot water temperature.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problems in the related art, the embodiments of the present disclosure provide an instant heating type water purifier. The technical scheme is as follows:

according to an aspect of the disclosed embodiment, an instant heating type water purifier is provided, which includes a front filter element, a reverse osmosis filter element and a rear filter element, and further includes:

one end of the water inlet pipeline is a tap water inlet, and the other end of the water inlet pipeline is communicated with the water inlet of the preposed filter element;

the water purification pipeline is communicated with the water outlet of the preposed filter element and the water inlet of the reverse osmosis filter element and is provided with a first electromagnetic valve and a booster pump;

one end of the waste water pipeline is a waste water interface of the water purifier, and the other end of the waste water pipeline is communicated with a waste water outlet of the reverse osmosis filter element;

the pure water pipeline is communicated with the water outlet of the reverse osmosis filter element and the water inlet of the post filter element, and a pure water check valve is arranged on the pure water pipeline;

one end of the cold water pipeline is a cold water outlet of the water purifier, the other end of the cold water pipeline is communicated with a water outlet of the post-positioned filter element, and a second electromagnetic valve is arranged on the cold water pipeline;

the water purifier comprises a water purifier, a hot water pipeline, a third electromagnetic valve, a first pressure stabilizing valve, a water suction pump and an instant heating device, wherein one end of the hot water pipeline is a hot water outlet of the water purifier, the other end of the hot water pipeline is communicated with a water outlet of the rear filter element, the hot water pipeline is provided with the third electromagnetic valve, the first pressure stabilizing valve, the water suction pump and the instant heating device, the water suction pump is positioned between the first pressure stabilizing valve and the instant heating device, and the instant heating device is positioned between the water suction pump and the hot water outlet;

the backflow pipeline comprises a backflow water inlet and a backflow water outlet, and the backflow water inlet is positioned on the water pipeline between the water outlet of the reverse osmosis filter element and the second electromagnetic valve or the third electromagnetic valve; the backflow water outlet is positioned on a water pipeline between the water outlet of the first electromagnetic valve and the water inlet of the reverse osmosis filter element; and a fourth electromagnetic valve and a backflow check valve are arranged on the backflow pipeline.

In one embodiment, the first pressure maintaining valve comprises one of a negative pressure valve, a zero pressure valve, a pressure reducing valve, and a constant pressure valve.

In one embodiment, the water purifier further includes:

the water storage pressure device comprises a water storage shell and a water storage bag positioned in the water storage shell, a cavity between the water storage shell and the water storage bag forms a pressure space, a water inlet and a water outlet of the water storage bag are communicated with a water storage opening of the return pipeline, the water storage opening is positioned between the return water inlet and the fourth electromagnetic valve, and the pressure space generates a certain pressure on the water storage bag;

and the high-voltage switch is positioned on a return pipeline between the return water inlet and the fourth electromagnetic valve and used for detecting the pure water pressure in the water storage bag.

In one embodiment, the water storage pressure device includes: the pressure space is filled with tap water;

correspondingly, the water purifier also comprises a tap water pipeline, a second pressure stabilizing valve is arranged on the water inlet pipeline, one end of the tap water pipeline is communicated between the second pressure stabilizing valve and the water inlet of the front filter element on the water inlet pipeline, and the other end of the tap water pipeline is communicated with the pressure space.

In one embodiment, the water storage pressure device includes: an inflation pressure barrel; the pressure space is filled with gas.

In one embodiment, the backflow water inlet is located between the water outlet of the post-filter element and the second electromagnetic valve, a water storage check valve is arranged on a pipeline between the water storage outlet and the second electromagnetic valve, and the water storage check valve is used for prohibiting the water stored in the water storage bag from flowing to the cold water outlet and allowing the water stored in the water storage bag to flow to the hot water outlet.

In one embodiment, the return water inlet is located on the plain water line.

In one embodiment, the second pressure maintaining valve comprises one of a pressure reducing valve and a constant pressure valve.

In one embodiment, the water storage pressure device is arranged in a filter element shell of the reverse osmosis filter element; correspondingly, the water storage opening is the backflow water inlet.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

the water purifier provided by the embodiment can replace concentrated water in front of the RO membrane when the water purifier does not produce water for a period of time, so that concentrated water ions in front of the RO membrane are prevented from penetrating through the RO membrane to a pure water end, the condition that the TDS of first cup water is high is avoided, and the water using experience of a user is improved; in addition, a hot water pipeline is added in the water purifier, so that a user can use the heated pure water to meet the hot water requirement of the user; moreover, because the water purifier can carry out the backward flow mode, can effectively avoid the TDS of pure water in this hot water pipeline higher, reduce the piling up of incrustation scale in the device that generates heat promptly, and the use of first surge damping valve and suction pump can make things convenient for the water purifier control to get into this device that generates heat promptly's discharge water, and then the outlet water temperature of this device that generates heat promptly accurately.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic view illustrating a structure of an instant water purifier according to an exemplary embodiment.

Fig. 2 is a schematic structural view illustrating an instant water purifier according to an exemplary embodiment.

Fig. 3 is a schematic view illustrating a structure of an instant water purifier according to an exemplary embodiment.

Fig. 4 is a schematic structural view illustrating an instant water purifier according to an exemplary embodiment.

Fig. 5 is a schematic view illustrating a structure of an instant water purifier according to an exemplary embodiment.

Fig. 6 is a schematic view illustrating a structure of an instant water purifier according to an exemplary embodiment.

Fig. 7 is a schematic diagram of a reverse osmosis composite filter element according to an exemplary embodiment.

Fig. 8 is a schematic diagram illustrating a reverse osmosis composite filter element according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "communicating" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present disclosure provides an instant water purifier, and fig. 1 is a schematic structural view of an instant water purifier shown according to an exemplary embodiment. As shown in fig. 1, the water purifier includes: the device comprises a front filter element 0, a reverse osmosis filter element 1, a rear filter element 2, a water inlet pipeline 3, a purified water pipeline 4, a waste water pipeline 5, a pure water pipeline 6, a cold water pipeline 7, a hot water pipeline 8 and a return pipeline 9.

As shown in fig. 1, one end of the water inlet pipeline 3 is a tap water inlet 31, and the other end of the water inlet pipeline 3 is communicated with a water inlet 01 of the pre-filter element 0; the purified water pipeline 4 is communicated with the water outlet 02 of the preposed filter element 0 and the water inlet 11 of the reverse osmosis filter element 1, and a first electromagnetic valve 41 and a booster pump 42 are arranged on the purified water pipeline 4; one end of the waste water pipeline 5 is a waste water interface 51 of the water purifier, the other end of the waste water pipeline 5 is communicated with a waste water outlet 12 of the reverse osmosis filter element 1, and a waste water electromagnetic valve 52 is arranged on the waste water pipeline 5 under normal conditions; the pure water pipeline 6 is communicated with the pure water outlet 13 of the reverse osmosis filter element 1 and the water inlet 21 of the post filter element 2, and the pure water pipeline 6 is provided with a pure water check valve 61; one end of the cold water pipeline 7 is a cold water outlet 71 of the water purifier, the other end of the cold water pipeline 7 is communicated with the water outlet 22 of the rear filter element 2, and a second electromagnetic valve 72 is arranged on the cold water pipeline 7; one end of the hot water pipeline 8 is a hot water outlet 81 of the water purifier, the other end of the hot water pipeline 8 is communicated with the water outlet 22 of the rear filter element 2, a third electromagnetic valve 82, a first pressure maintaining valve 83, a water suction pump 84 and an instant heating device 85 are arranged on the hot water pipeline 8, the water suction pump 84 is positioned between the first pressure maintaining valve 83 and the instant heating device 85, and the instant heating device 85 is positioned between the water suction pump 84 and the hot water outlet 81; the return pipeline 9 comprises a return water inlet 91 and a return water outlet 92, and the return water inlet 91 is positioned on a pipeline between the pure water outlet 13 of the reverse osmosis filter element 1 and the second electromagnetic valve 72 or the third electromagnetic valve 82; the return water outlet 92 is positioned on a water pipeline between the first electromagnetic valve 41 and the water inlet 11 of the reverse osmosis filter element 1; for example, as shown in fig. 1, the backflow water inlet 91 is located on a water pipeline between the water outlet of the rear filter element 2 and the second solenoid valve 72 or the third solenoid valve 82, and the backflow water outlet 92 is located on a water pipeline between the first solenoid valve 41 and the booster pump 42, of course, the backflow water inlet 91 may also be located on a pure water pipeline 6, the backflow water outlet 92 may also be located between the booster pump 42 and the water inlet of the reverse osmosis filter element 1, and so on, as long as the backflow water outlet 92 is located between the water outlet of the first solenoid valve 41 and the water inlet of the reverse osmosis filter element 1, and the backflow water inlet 91 is located behind the pure water outlet 13 of the reverse osmosis filter element 1, so that pure water produced by the reverse osmosis filter element 1 can flow back to the water inlet of the reverse osmosis filter element 1, which is not exemplified herein. The return line 9 is provided with a fourth solenoid valve 93 and a return check valve 94.

When the water purifier is used, four working modes can be provided: a water making mode, a cold water taking mode, a hot water taking mode and a reflux bubble film mode.

Under the system water mode, can open first solenoid valve 41 and booster pump 42, like this, outside running water gets into this water purifier after from water inlet 31 of water inlet pipe 3's running water inlet, can flow to the water inlet of leading filter core 0 from water inlet pipe 3 earlier and get into this leading filter core 0, after this leading filter core 0 filters the large granule impurity and some coloured impurity of aquatic, with the delivery port output of water from this leading filter core 0, so avoid the impurity of aquatic to damage devices such as rearmounted first solenoid valve 41, booster pump 42 and reverse osmosis filter core 1, thereby effectively improve the life of this water purifier. The first electromagnetic valve 41 is a water inlet switch of the reverse osmosis filter element 1, and after the first electromagnetic valve 41 and the booster pump 42 on the purified water pipeline 4 are opened, the purified water filtered by the preposed filter element 0 enters the reverse osmosis filter element 1 from the water inlet of the reverse osmosis filter element 1 through the boosting of the booster pump 42 on the purified water pipeline 4. This reverse osmosis filter core 1 filters the pure water of making after can follow the pure water delivery port 13 outflow of this reverse osmosis filter core 1 to the water purification of entering, flows to the water inlet of this rearmounted filter core 2 behind this pure water pipeline 6, and the pure water enters into this rearmounted filter core 2 from the water inlet of this rearmounted filter core 2, and this rearmounted filter core 2 can filter this pure water, improves the export outflow of this rearmounted filter core 2 after the taste of this pure water to supply the user to use.

In the cold water taking mode, the first electromagnetic valve 41, the booster pump 42 and the second electromagnetic valve 72 can be opened, after the water purifier starts to make water according to the working process of the water making mode, the made pure water flows out from the water outlet of the rear filter element 2, and the made pure water flows to the cold water outlet 71 from the water outlet of the rear filter element 2 through the cold water pipeline 7 due to the opening of the second electromagnetic valve 72 on the cold water pipeline 7. The cold water outlet 71 is communicated with the water outlet of the intelligent faucet, so that the prepared pure water can flow out from the water outlet of the intelligent faucet for users to use.

When the water purifier is in a hot water taking mode, the first electromagnetic valve 41, the booster pump 42, the third electromagnetic valve 82, the water suction pump 84, the first pressure maintaining valve 83 and the instant heating device 85 can be opened, after the water purifier starts to make water according to the working process of the water making mode, the made pure water flows out from the water outlet of the rear filter element 2, and the made pure water flows to the first pressure maintaining valve 83 from the water outlet of the rear filter element 2 through the hot water pipeline 8 due to the opening of the fourth electromagnetic valve 93 on the hot water pipeline 8. The pure water flows to the instant heating device 85 to be heated under the action of the water pump 84, and the heated pure water can flow out from the water outlet of the intelligent faucet for the user to use. Here, the first pressure maintaining valve 83 is used for stabilizing the pressure maintaining valve rear water outlet pressure on the hot water pipeline 8, so that the water flow entering the instant heating device 85 can be accurately controlled through the water pump 84, and the water outlet temperature of the instant heating device 85 can be accurately controlled.

In the backflow bubble membrane mode, the first solenoid valve 41, the second solenoid valve 72, the third solenoid valve 82 and the booster pump 42 may be closed, the backflow check valve 94 and the fourth solenoid valve 93 may be opened, the fourth solenoid valve 93 is a backflow switch, after the fourth solenoid valve 93 and the backflow check valve 94 are opened, since the second solenoid valve 72 and the third solenoid valve 82 are closed, the fourth solenoid valve 93 is opened, the produced pure water may only flow to the water inlet of the reverse osmosis filter element 1 through the third solenoid valve 82 and the backflow check valve 94 after flowing out from the water outlet of the rear filter element 2, and the high TDS concentrated water after normal water production at the front concentrated water side of the RO membrane of the reverse osmosis filter element 1 may be replaced. So, can replace the dense water before the RO membrane when the water purifier is not made water for a long time, prevent that the dense water ion before this RO membrane from passing the RO membrane and permeating the pure water side, avoid appearing the higher condition of first cup of water TDS after the water purifier is static for a period of time, improve user experience.

In one possible embodiment, the first pressure maintaining valve 83 includes one of a negative pressure valve, a zero pressure valve, a pressure reducing valve, and a constant pressure valve.

Here, the negative pressure valve and the zero pressure valve allow the passing water flow to flow out in a non-pressure state, the pressure reducing valve may reduce the pressure of the passing water flow to a certain desired pressure, and the constant pressure valve allows the passing water flow to flow out in a constant pressure state. The negative pressure valve, the zero pressure valve, the pressure reducing valve and the constant pressure valve can make the flowing water flow out at stable pressure, so that the subsequent water pumping pump 84 pumps water according to specific power to pump specific flow, so that the water flow entering the instant heating device 85 can be accurately controlled through the water pumping pump 84, the water outlet temperature of the instant heating device 85 is related to the working power and the water flow, and thus, the water outlet temperature of the instant heating device 85 can be accurately controlled by controlling the working power of the instant heating device 85 and the water flow of the water pumping pump 84.

Preferably, the first pressure maintaining valve 83 may be a negative pressure valve or a zero pressure valve, the negative pressure generated after the water pump 84 is started can open the negative pressure valve or the zero pressure valve, and the water pressure after the negative pressure valve or the zero pressure valve is opened is zero, so that the pressurized pure water produced by the rear filter element 2 can flow out in a non-pressure state, the water flow rate pumped by the water pump 84 is not influenced by the change of the water pressure of the water discharged from the rear filter element 2, and the water discharge rate can be accurately controlled.

In one possible embodiment, fig. 2 is a schematic diagram illustrating the construction of an instant water purifier according to an exemplary embodiment. As shown in fig. 2, the water purifier further includes: a water storage pressure device 95 and a high pressure switch 96.

The water storage pressure device 95 comprises a water storage shell 951 and a water storage bag 952 positioned in the water storage shell 951, a cavity between the water storage shell 951 and the water storage bag 952 forms a pressure space 953, a water inlet and a water outlet 9521 of the water storage bag 952 are communicated with a water storage port 97 of the return pipeline 9, the water storage port 97 is positioned between the return water inlet 91 and the fourth electromagnetic valve 93, and the pressure space 953 generates a certain pressure on the water storage bag 952; for example, when the pressure generated by the pressure space 953 is greater than the water pressure in the water storage bag 952, the pure water in the water storage bag 952 may be pressed out of the water storage bag 952, and when the pressure generated by the pressure space 953 is less than the water pressure in the water storage bag 952, the pure water in the water storage bag 952 may press the object in the pressure space 953, and the object in the pressure space 953 may be tap water or gas.

Here, the water storage bag 952 is made of an elastic material, so that the water storage bag is conveniently deformed under the pressure of the pressure space 953 to enable pure water to enter and exit, the elastic material can be rubber, silica gel and other elastic high polymer materials, and further, the water stored in the water storage bag 952 is used for not only refluxing and entering the RO membrane concentrated water side for soaking but also drinking, so that the water storage bag can be made of food-grade elastic materials.

And the high-pressure switch 96 is positioned on the return pipeline 9 between the return water inlet 91 and the fourth electromagnetic valve 93 and is used for detecting the pressure of the pure water in the water storage bag 952.

Here, the high pressure switch 96 functions to detect the pressure of pure water in the water storage bag 952, so that the high pressure switch 96 may be provided on the return line 9 between the return water inlet 91 and the fourth solenoid valve 93. This water purifier can come whether control to get into system water mode through this high pressure switch 96, for example, when the pure water of storage is less in water storage bag 952, the water pressure that this high pressure switch 96 detected is less, just can control the water purifier and begin system water when the water pressure that detects is less than minimum preset threshold value, the pure water storage that the water purifier made after system water is in water storage bag 952, the pure water pressure in the water storage bag 952 will increase gradually like this, when the pure water of storage is enough in water storage bag 952, the water pressure that this high pressure switch 96 detected is great, just can control the water purifier to stop system water when the water pressure that detects is greater than the maximum preset threshold value. Therefore, the water purifier is controlled to produce water through the high-voltage switch 96, and the water storage amount in the water storage bag 952 can be ensured.

For example, when the cold water intake mode or the hot water intake mode is entered, since the second solenoid valve 72 or the third solenoid valve 82 is opened, the pressure of the pure water in the water storage bag 952 will be reduced, the pressure space 953 will squeeze the pure water in the water storage bag 952 to flow out for the user to use, when the water intake is stopped, the pure water in the water storage bag 952 will be reduced, at this time, the water pressure detected by the high-pressure switch 96 is less than the minimum preset threshold value, the water purifier will be controlled to start water production, the pure water produced after the water production by the water purifier is stored in the water storage bag 952, so that the pressure of the pure water in the water storage bag 952 will be gradually increased, and the pressure space 953 will be squeezed until the water storage bag 952 is full, at this time, the water pressure detected by the high-pressure switch 96 is greater than the maximum preset threshold value, and the water purifier will be controlled to stop water production.

In the embodiment shown in fig. 2, the return water inlet 91 is located in the pure water line 6 between the pure water outlet 13 of the reverse osmosis cartridge 1 and the water inlet 21 of the rear cartridge 2, and the return water outlet 92 is located in the water line between the booster pump 42 and the water inlet 11 of the reverse osmosis cartridge 1.

In one possible embodiment, fig. 3 is a schematic diagram illustrating the construction of an instant water purifier according to an exemplary embodiment. As shown in fig. 3, the water storage pressure device 95 includes: a water drive tank, said pressure space 953 being filled with tap water; as shown in fig. 3, the water storage bag 952 is a water-driving tank water bag of a water-driving tank, the water storage housing 951 is a water-driving tank housing, and the pressure space 953 is a tap water space, and correspondingly, as shown in fig. 3, the water purifier further includes a tap water pipeline 98, a second pressure maintaining valve 32 is disposed on the water inlet pipeline 3, one end of the tap water pipeline 98 is communicated between the second pressure maintaining valve 32 and the water inlet of the pre-filter element 0 on the water inlet pipeline 3, and the other end is communicated with the pressure space 953.

Here, the second pressure maintaining valve 32 is used for stabilizing the water pressure of the tap water, and optionally, the second pressure maintaining valve 32 may be a pressure reducing valve, a constant pressure valve, or the like, so that the pressure of the tap water flowing from the tap water pipeline 98 to the pressure space 953 is constant, when the pressure of the tap water in the tap water space is greater than the pressure of the pure water in the water drive tank, the pure water in the water drive tank is squeezed to be discharged, and when the pressure of the pure water in the water drive tank is greater than the pressure of the tap water in the tap water space, the pure water stored in the water drive tank squeezes the tap water in the tap water space to be discharged from the tap water inlet/outlet 14. The second pressure stabilizing valve 32 is needed to be set for limiting the water inlet pressure, avoiding the problems that the running water pressure is too high, the running of the water drive tank is influenced, and the back pressure is too large to influence the water making efficiency in the process of making full water by the water drive tank.

In the embodiment shown in fig. 3, the return water inlet 91 is located in the pure water line 6 between the pure water outlet 13 of the reverse osmosis cartridge 1 and the water inlet 21 of the rear cartridge 2, and the return water outlet 92 is located in the water line between the booster pump 42 and the water inlet 11 of the reverse osmosis cartridge 1.

In one possible embodiment, as shown in fig. 2, the water storage pressure device 95 includes: an inflation pressure barrel; the pressure space 953 is filled with gas, and the pressure space 953 is closed.

In one possible embodiment, fig. 4 is a schematic diagram illustrating the construction of an instant water purifier according to an exemplary embodiment. Fig. 5 is a schematic view illustrating a structure of an instant water purifier according to an exemplary embodiment. As shown in fig. 4 and 5, the backflow water inlet 91 is located between the water outlet of the rear filter element 2 and the second electromagnetic valve 72, a water storage check valve 99 is disposed on a pipeline between the water storage port 97 and the second electromagnetic valve 72, and the water storage check valve 99 is configured to prohibit the stored water in the water storage bag 952 from flowing to the cold water outlet 71, and allow the stored water in the water storage bag 952 to flow to the hot water outlet 81.

Here, the water storage pressure device 95 shown in fig. 4 is a water drive tank, and the water storage pressure device 95 shown in fig. 5 is an inflation pressure tank.

In one possible embodiment, fig. 6 is a schematic diagram illustrating the construction of an instant water purifier according to an exemplary embodiment. As shown in fig. 6, the water storage pressure device 95 may be disposed in the filter element housing of the reverse osmosis filter element 1; correspondingly, the water storage port 97 is the backflow water inlet 91.

For example, when the water storage pressure device 95 is a water drive tank, the water drive tank and the reverse osmosis filter element 1 are integrated into a reverse osmosis composite filter element, and fig. 7 is a schematic structural diagram of a reverse osmosis composite filter element according to an exemplary embodiment. As shown in fig. 7, the filter element housing is provided with a water inlet 11 of the reverse osmosis filter element, the tap water inlet and outlet 14 (which is communicated with the tap water inlet pipe 98 shown in fig. 6, so that the tap water inlet pipe 98 is communicated to the tap water space of the water drive tank), the pure water outlet 13 and the wastewater outlet 12; the reverse osmosis composite filter element also comprises a reverse osmosis RO adapter sleeve 15, wherein the reverse osmosis RO adapter sleeve 15 is positioned in the filter element shell and comprises a first opening 151 and a second opening 152, and the first opening is communicated with a water inlet of the reverse osmosis filter element; the reverse osmosis cartridge 1 comprises: the RO membrane comprises an RO membrane element 16 and an RO membrane central tube 17, wherein the RO membrane element 16 comprises a water inlet side, a pure water side and a waste water side, waste water generated after filtering pure water entering from the water inlet side is positioned on the waste water side by the RO membrane element 16, the generated pure water is positioned on the pure water side, and the second opening 152 is communicated with the water inlet side of the RO membrane element 16; the waste water side is communicated with the waste water outlet through a cavity between the RO membrane element 16 and the filter element shell and a cavity between the RO adapter sleeve 15 and the filter element shell; the upper end of the RO membrane central tube 17 is open, the lower end of the RO membrane central tube 17 is closed, the side wall of the RO membrane central tube 17 is provided with a first pure water through hole 171, the RO membrane central tube 17 is positioned on the pure water side of the RO membrane element 16, and pure water on the pure water side enters the RO membrane central tube 17 through the first pure water through hole 171; the water drive tank 18 includes: the water-drive tank comprises a water-drive tank shell 181 and a water-drive tank water bag 182 positioned in the water-drive tank shell 181, wherein the water-drive tank water bag 182 is used for dividing the space in the water-drive tank shell 181 into a tap water cavity and a pure water cavity, and the water-drive tank water bag 182 can divide the interior of the water-drive tank shell 181 into a cavity in the water-drive tank water bag 182 and a cavity outside the water-drive tank water bag 182; here, the cavity in the water-drive tank water bag 182 shown in fig. 7 may be a tap water cavity, the cavity between the water-drive tank water bag 182 and the water-drive tank case 181 may be a pure water cavity, or the cavity in the water-drive tank water bag 182 may be a pure water cavity, and the cavity between the water-drive tank water bag 182 and the water-drive tank case 181 may be a tap water cavity, which is not limited herein. The tap water cavity is communicated with the tap water inlet and outlet, and the pure water cavity is communicated with the pure water outlet and an opening at the upper end of the RO membrane central tube; the water drive tank is used for storing the pure water produced by the RO membrane element in the pure water cavity during water replenishing, and the tap water in the tap water cavity presses the pure water in the pure water cavity to be discharged from the pure water outlet during water discharging; and a central check valve is arranged in the RO membrane central pipe or the pure water cavity of the water drive tank and used for limiting pure water to flow from the RO membrane central pipe to the pure water cavity.

For example, as shown in fig. 7, the reverse osmosis composite filter element provided by this embodiment may be configured such that the water drive tank shell 181 is an annular shell with two open ends, and includes a third opening located at the upper end of the water drive tank shell 181 and a fourth opening located at the lower end of the water drive tank shell 181, where the fourth opening communicates with an upper end opening of the RO membrane central tube, and the third opening communicates with the pure water outlet; one end of the water-driving tank water bag 182 is open, a cavity in the water-driving tank water bag 182 is a tap water cavity, a cavity between the water-driving tank water bag 182 and the water-driving tank shell 181 is a pure water cavity, the tap water cavity is communicated with the tap water inlet and outlet through the opening of the water-driving tank water bag 182, and the central check valve 184 is disposed at the fourth opening. The water bag of the water drive tank in the structure shown in fig. 7 only needs to be provided with one opening to be connected with the pure water outlet, the structural sealing connection is easier to realize, and the product yield is high and the cost is low.

Or, fig. 8 is a schematic structural diagram of a reverse osmosis composite filter element shown according to an exemplary embodiment, where the reverse osmosis composite filter element provided in this embodiment may be as shown in fig. 8, where the water drive tank shell 181 is an annular shell with openings at two ends, the water drive tank shell 181 is located in the RO adapter sleeve 15 and includes a third opening located at an upper end of the water drive tank shell and a fourth opening located at a lower end of the water drive tank, and the third opening is communicated with the tap water inlet and outlet 14; a water-driving tank water bag 182 positioned in the water-driving tank shell 181, wherein the upper and lower openings of the water-driving tank water bag 182 are annular water bags with openings at both ends, at this time, the cavity in the water-driving tank water bag 182 is a pure water cavity, the cavity between the water-driving tank water bag 182 and the water-driving tank shell 181 is a tap water cavity, and the tap water cavity is communicated with the tap water inlet and outlet 14 through the third opening; this water drive jar still includes water drive jar center tube 183, is located in water drive jar water bag 182, water drive jar center tube 183 upper and lower opening, the upper shed intercommunication of water drive jar center tube 183 pure water delivery port 13, the under shed intercommunication of water drive jar center tube 183 the upper end opening of RO membrane center tube 17, water drive jar center tube 183 passes water drive jar water bag upper and lower opening and the fourth opening, the bottom of water drive jar center tube 183 is provided with central check valve 184, water drive jar center tube 183 is located lateral wall more than central check valve 184 is provided with second pure water through-hole 1831.

As shown in fig. 7 or fig. 8, the purified water entering the reverse osmosis composite filter element can be guided into the RO membrane element 16 through the RO membrane adapter sleeve, and filtered by the RO membrane, water molecules can pass through the RO membrane under a certain pressure, and impurities such as inorganic salts, heavy metal ions, organic matters, colloids, bacteria, viruses and the like in the purified water cannot pass through the RO membrane, so that the purified water which can pass through the RO membrane and the concentrated water which cannot pass through the RO membrane are strictly distinguished. The concentrated water cannot penetrate through the RO membrane and can only be discharged from the wastewater side of the RO membrane element 16, and then flows through the RO membrane element 16, the cavity between the RO adapter sleeve 15 and the filter element shell and is discharged from the wastewater outlet of the reverse osmosis composite filter element. Pure water can permeate the RO membrane to the pure water side thereof, enter the RO membrane central tube 17 from the first pure water through hole 171 in the RO membrane central tube 17, and then enter the pure water chamber in the water flooding tank 18 from the RO membrane central tube 17 for storage.

In this case, in the configuration shown in fig. 7, pure water produced by the RO membrane element 16 enters the RO membrane center tube 17, and then enters the pure water chamber between the water drive tank case 181 and the water drive tank water bag 182 through the fourth opening from the RO membrane center tube 17 to be stored. When the water-driven tank stores pure water, the pure water in the pure water cavity extrudes tap water in the water-driven tank water bag 182, and the tap water in the water-driven tank water bag 182 is discharged until the pure water cavity is filled with the pure water; when pure water is discharged from the pure water chamber, tap water enters the water-driving tank water bag 182, and the water-driving tank water bag 182 is opened to squeeze pure water in the pure water chamber, so that the pure water flows out from the pure water outlet 13.

In the configuration shown in fig. 8, pure water produced by the RO membrane element 16 enters the RO membrane center tube 17, then enters the water drive tank center tube 183 from the RO membrane center tube 17, and enters the pure water chamber in the water drive tank water bag 182 from the second pure water through hole 1831 of the water drive tank center tube 183 for storage. When the water drive tank stores pure water, the pure water in the water drive tank water bag 182 extrudes tap water in the tap water cavity to discharge the tap water in the tap water cavity until the water drive tank water bag 182 is filled with pure water; when pure water is discharged from the pure water chamber in the water-driving tank water bag 182, tap water enters the tap water chamber and presses the water-driving tank water bag 182, so that the pure water in the pure water chamber flows out from the pure water outlet 13.

Here, a central check valve may be disposed in the pure water chamber of the RO membrane central tube or the water drive tank, for example, a central check valve 184 is disposed at the lower opening of the water drive tank shell 181 as shown in fig. 7, or a central check valve 184 is disposed at the lower opening of the water drive tank central tube 183 as shown in fig. 8, and the central check valve 184 prevents pure water in the pure water chamber of the water drive tank from flowing back to the RO membrane central tube, so that the pure water chamber stores water. And a tap water cavity in the water drive tank is used for containing tap water, and tap water enters and exits the tap water cavity of the water drive tank from the tap water inlet and outlet. When the water drive tank needs to store pure water, the pure water in the pure water cavity extrudes tap water in the tap water cavity, and the tap water in the tap water cavity is discharged out of the water drive tank until the pure water cavity is filled with the pure water; when pure water is discharged from the pure water cavity, tap water enters the tap water cavity of the water drive tank, and pure water in the pure water cavity is extruded and flows out from the pure water outlet 13.

Of course, the water driving tank may be replaced by an inflation pressure barrel, in this case, the reverse osmosis composite filter element does not need to be provided with a tap water inlet and outlet, and the water purifier does not need to be provided with a tap water pipeline 98 and a second pressure stabilizing valve 32, and the structure of the water purifier may be modified with reference to fig. 6, which is not shown here.

It should be noted that in the above embodiments, the post-filter element 2 is provided separately, and in some other embodiments, as shown in fig. 6, the post-filter element 2 may also be integrated with the above reverse osmosis composite filter element, for example, the post-filter element 2 may be provided in the RO membrane central tube 17 of the reverse osmosis composite filter element and/or in the water drive tank central tube of the reverse osmosis composite filter element; at this time, the pure water pipeline 6 between the reverse osmosis composite filter element and the post-filter element 2 is not arranged in the water purifier. Alternatively, the rear filter element 2 can be integrated with the front filter element 0, and the specific integration is well known to those skilled in the art and will not be described in detail herein. The specific structure of the water purifier with the post-filter element integrated with other filter elements can be modified by referring to the various water purifier structures in the above embodiments, and it is clear to those skilled in the art that the specific modified structures are not illustrated here.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure should be limited only by the attached claims.

Claims

1. The utility model provides an instant heating type water purifier which characterized in that, includes leading filter core, reverse osmosis filter core and rearmounted filter core, the water purifier still includes:

the pure water pipeline is communicated with the water outlet of the reverse osmosis filter element and the water inlet of the post filter element, and a central check valve is arranged on the pure water pipeline;

2. The water purifier of claim 1, wherein the first pressure maintaining valve comprises one of a negative pressure valve, a zero pressure valve, a pressure reducing valve, and a constant pressure valve.

3. The water purifier according to claim 1, further comprising:

4. The water purifier of claim 3, wherein the water storage pressure device comprises: the pressure space is filled with tap water;

5. The water purifier of claim 3, wherein the water storage pressure device comprises: an inflation pressure barrel; the pressure space is filled with gas.

6. The water purifier according to claim 4 or 5, wherein the backflow water inlet is located between the water outlet of the post-filter element and the second electromagnetic valve, a water storage check valve is arranged on a pipeline between the water storage outlet and the second electromagnetic valve, and the water storage check valve is used for prohibiting the water stored in the water storage bag from flowing to the cold water outlet and allowing the water stored in the water storage bag to flow to the hot water outlet.

7. The water purifier according to claim 4 or 5, wherein the return water inlet is located on the pure water line.

8. The water purifier of claim 4, wherein the second pressure maintaining valve comprises one of a pressure reducing valve and a constant pressure valve.

9. The water purifier of claim 4 or 5, wherein the water storage pressure device is disposed within a filter element housing of the reverse osmosis filter element; correspondingly, the water storage opening is the backflow water inlet.