CN112209512A

CN112209512A - Water purification system

Info

Publication number: CN112209512A
Application number: CN201910620890.9A
Authority: CN
Inventors: 李广青; 刘陈斌; 金楷轩
Original assignee: Weisi Wase Environmental Technology Jiaxing Co ltd
Current assignee: Weisi Wase Environmental Technology Jiaxing Co ltd
Priority date: 2019-07-10
Filing date: 2019-07-10
Publication date: 2021-01-12

Abstract

The invention provides a purified water system, which comprises a primary purified water path and a secondary purified water path, wherein the primary purified water path comprises a first-stage filter element, the secondary purified water path comprises a first-stage filter element and a second-stage filter element, the primary purified water path is communicated with a primary water outlet, and the secondary purified water path is communicated with a secondary water outlet, so that different types of water can be provided.

Description

Water purification system

Technical Field

The invention relates to the field of water treatment, and further relates to a purified water system.

Background

At present, various water purifying devices are more and more commonly found in people's lives. Water purification devices typically include multiple stages of filter elements for filtering and purifying source water.

Factors influencing the popularization and the use of the water purifier are the most basic purification performance and the price is also one of the important factors. The reverse osmosis filter element developed in recent years utilizes the reverse osmosis principle to perform the filtration function, and the filtration precision is higher. However, in a water purifying apparatus, the filter element is a main source of the cost of the apparatus, and as the apparatus is used, the filter element needs to be replaced periodically, and the reverse osmosis membrane filter element is expensive, so that the user needs to continuously input the cost.

On the other hand, the reverse osmosis membrane filter element is a higher-precision filter membrane, and is more easily polluted and blocked by soluble solids in water in the using process, so that the replacement frequency is higher. When water purification unit does not use, filterable residue is constantly piled up in the filter core for the inside dissolubility total solids TDS of filter core is great, consequently makes the life of filter core shorter, consequently how to prolong the adaptation life of filter core, makes water purification unit's overall cost lower, is one of the problem that each water purification unit manufacturer concerns.

On the other hand, in the water treatment equipment with the heating function, the control and the safety of the water temperature are important technical points, while the existing water treatment equipment has poor temperature control precision and large error amplitude, so that the water temperature provided for a user does not correspond to the actual water temperature on the one hand, and on the other hand, the phenomenon of dry burning often occurs due to inaccurate temperature control. That is, when the water in the water treatment equipment is little or not available, the equipment still keeps the original working state, and the equipment is heated or kept warm, so that the service life of the heating part of the equipment is reduced for a long time, and even the equipment is directly burned out, thereby generating safety threat.

The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.

Disclosure of Invention

One object of the present invention is to provide a purified water system, which includes multiple stages of filter elements and forms water paths with multiple purification levels, and provides purified water with multiple different purification degrees.

An object of the present invention is to provide a purified water system which can provide purified water of different purification levels according to the needs of users, and the purification is more suitable for the actual use needs of users.

An object of the present invention is to provide a purified water system, wherein one of the multiple stages of filter elements is a reverse osmosis membrane filter element, and a protection waterway is formed, and when the purified water system is not in operation, the protection waterway delivers water to the reverse osmosis membrane filter element by means of source water pressure, so as to reduce the concentration of soluble solids in the water environment of the reverse osmosis membrane filter element and protect the reverse osmosis membrane filter element.

One object of the present invention is to provide a purified water system, which forms a backwashing waterway for backwashing the multi-stage filter elements for cleaning and maintenance when the purified water system is not operated for a long time.

An object of the present invention is to provide a purified water system formed to discharge water with old water, the old water discharge water circuit being used to discharge use residual water of the purified water system when the purified water system is not in operation, to maintain cleanliness of the purified water system and to prevent pollution of the residual water.

One object of the invention is to provide a purified water system, which comprises a heating protection unit, wherein the heating protection unit is provided with a protection water tank, so that reserved water is ensured to be reserved in the heating module during working, and the heating module is prevented from being dried.

An object of the present invention is to provide a purified water system, wherein the heating unit includes a temperature sensor provided to the heating module, and controls the heating module to stop heating when the heating module exceeds a predetermined temperature.

An object of the present invention is to provide a purified water system including a multiple temperature control unit that monitors a multi-point temperature of the purified water system to comprehensively control an outlet water speed of the purified water system according to the multi-point temperature, thereby adjusting an outlet water temperature.

An object of the present invention is to provide a purified water system comprising:

a primary purification circuit, said primary purification circuit including a first stage filter element; and

the secondary purification water route includes first order filter core and a second level filter core, wherein the primary purification water route communicates a primary water outlet, secondary purification water route intercommunication a secondary water outlet.

A purified water system according to one embodiment, wherein the secondary purified water circuit includes a high pressure pump disposed at a forward end of the second stage cartridge.

The purified water system according to one embodiment, wherein the purified water system comprises a protection water path, the protection water path comprises a constant pressure one-way valve, and the one-way valve is communicated with the front end of the high-pressure pump and one end of the second-stage filter element.

A purified water system according to one embodiment, wherein said constant pressure one-way valve is a 2.5Kg one-way valve.

According to an embodiment, the secondary purification water circuit comprises a water inlet solenoid valve, and the water inlet solenoid valve is arranged at the front end of the high-pressure water pump.

The purified water system according to one embodiment, wherein the secondary purified water flow comprises a water inlet solenoid valve disposed at a front end of the high pressure pump, the check valve communicating to a rear end of the water inlet solenoid valve.

According to an embodiment, the water inlet solenoid valve is connected with the primary water outlet, and the primary water outlet is connected with the primary water outlet.

A purified water system according to one embodiment, wherein the secondary purified water circuit includes a pressure relief valve disposed at a rear end of the second stage filter element.

According to an embodiment, the purified water system comprises a back washing waterway, and the back washing waterway comprises a washing solenoid valve which is communicated with the back washing outlet of the second-stage purification filter element and the waste water outlet of the purified water system.

A purified water system according to one embodiment, wherein the secondary purified water circuit includes a tank disposed at a rear end of the second stage filter element and an instant heating module disposed at a rear end of the tank.

The purified water system according to one embodiment, wherein the secondary purified water circuit comprises a water-gas separation module disposed at a rear end of the instant heating module.

According to one embodiment, the purified water system comprises a stale water discharge water channel, wherein the stale water discharge water channel comprises a discharge control valve, and the discharge control valve is communicated with the water tank and a waste water outlet of the purified water system.

The purified water system according to one embodiment, wherein the secondary purified water circuit comprises a flow control module disposed between the tank and the instant heating module.

According to one embodiment, the water purification system comprises a backwashing waterway, the backwashing waterway comprises a flushing solenoid valve, the flushing solenoid valve is communicated with a backwashing outlet of the second-stage purification filter element and a wastewater outlet of the water purification system, and the old water drainage waterway and the backwashing waterway work in a staggered mode.

A purified water system according to one embodiment, wherein the primary purified water circuit includes a low pressure switch disposed at a rear end of the first stage cartridge.

A purified water system according to one embodiment, wherein the primary purified water circuit includes a flow meter disposed between the low pressure switch and the first stage cartridge.

A purified water system according to one embodiment, wherein the secondary purified water circuit includes a third stage filter element disposed at a rear end of the second stage filter element.

A purified water system according to one embodiment, wherein the second stage cartridge is a reverse osmosis membrane cartridge.

According to an embodiment, the purified water system comprises a heating protection unit, the heating protection unit comprises a water level sensor, the water level sensor is arranged on the water tank, the water level sensor monitors the water level of the water tank, and when the water level is lower than a preset value, the instant heating module is controlled to stop heating.

The purified water system according to one embodiment, wherein the heating unit comprises a temperature sensor, the temperature sensor is arranged on the instant heating module, the temperature sensor monitors the temperature of the instant heating module, and when the temperature of the instant heating module exceeds a preset value, the instant heating module is controlled to stop heating.

According to an embodiment, the purified water system comprises a multiple temperature control unit, the multiple temperature control unit comprises a first temperature sensor, a second temperature sensor and a flow control module, the first temperature sensor is arranged in the water tank and used for monitoring the water temperature of the water tank, the second temperature sensor is arranged in the instant heating module and used for monitoring the outlet water temperature of the instant heating module, and the flow control module is used for adjusting the outlet flow of the secondary water according to the temperatures of the first temperature unit and the second unit.

Another aspect of the present invention provides a purified water system, comprising

A first filter element;

a second stage filter element;

a high pressure water pump;

a constant pressure check valve; the high-pressure water pump is arranged at the front end of the second-stage filter element and at the rear end of the second-stage filter element, one end of the constant-pressure one-way valve is communicated with the front end of the high-pressure water pump, and the other end of the constant-pressure one-way valve is communicated with the rear end of the second-stage filter element.

A purified water system as claimed in claim 22, wherein the second stage filter element is a reverse osmosis membrane filter element.

A first stage filter element;

a second stage filter element;

a water tank;

an instant heating module; and

the heating protection unit is characterized in that the first-stage filter element, the second-stage filter element and the water tank are connected in series in a waterway, the water tank is arranged at the rear end of the second-stage filter element, the instant heating module is used for heating water, and the instant heating module is arranged at the rear end of the water tank, wherein the heating protection unit comprises a water level sensor which is arranged in the water tank, monitors the water level of the water tank, and controls the instant heating module to stop heating when the water level is lower than a preset value.

Another aspect of the present invention provides the purified water system, wherein the purified water system comprises a high pressure pump disposed between the first stage filter element and the second stage filter element.

Another aspect of the present invention provides a purified water system, comprising:

a first stage filter element;

a second stage filter element;

a water tank;

an instant heating module; and

the multi-temperature control unit comprises a first-stage filter element, a second-stage filter element, a water tank, an instant heating module and a flow control module, wherein the first-stage filter element, the second-stage filter element and the water tank are connected in series in a waterway, the water tank is arranged at the rear end of the second-stage filter element, the instant heating module is used for heating water, the instant heating module is arranged at the rear end of the water tank, the multi-temperature control unit comprises a first temperature sensor, a second temperature sensor and a flow control module, the first temperature sensor is arranged in the water tank and used for monitoring the water temperature of the water tank, the second temperature sensor is arranged in the instant heating module and used for monitoring the water outlet temperature of the instant heating module, and the flow control module is used for adjusting the flow of secondary water of the.

The purified water system according to one embodiment, wherein the flow control module controls the flow of the secondary water outlet in combination with the demand temperature, the temperatures of the first temperature sensor and the second temperature sensor.

According to an embodiment, the water purification system comprises a high-pressure pump, and the high-pressure pump is arranged at the front end of the second-stage filter element.

According to an embodiment, the water purification system comprises a water inlet solenoid valve, the water inlet solenoid valve is arranged at the front end of the high-pressure pump, a water path passing through the first stage filter element is divided into two paths, one path is communicated with a primary water outlet, and the other path is communicated to the water inlet solenoid valve.

Drawings

Fig. 1 is a block diagram of a purified water system according to an embodiment of the present invention.

Fig. 2 is a schematic view of an embodiment of the above-described purified water system according to the present invention.

Fig. 3 is a schematic diagram of a heating protection unit of the purified water system according to the above embodiment of the present invention.

Fig. 4 is a schematic diagram of a multi-temperature control unit of a purified water system according to the above embodiment of the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be in a particular orientation, constructed and operated in a particular orientation, and thus the above terms are not to be construed as limiting the present invention.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

References to "one embodiment," "an embodiment," "example embodiment," "various embodiments," "some embodiments," etc., indicate that the embodiment described herein may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the feature, structure, or characteristic. In addition, some embodiments may have some, all, or none of the features described for other embodiments.

Referring to fig. 1-4, a purified water system 100 according to one embodiment of the invention is illustrated. Fig. 1 is a block diagram of a purified water system according to an embodiment of the present invention. Fig. 2 is a schematic view of an embodiment of the above-described purified water system according to the present invention. Fig. 3 is a schematic diagram of a heating protection unit of the purified water system according to the above embodiment of the present invention. Fig. 4 is a schematic diagram of a multi-temperature control unit of a purified water system according to the above embodiment of the present invention.

The invention provides a purified water system 100, wherein the purified water system 100 comprises a multi-stage filter element 90, source water is filtered by the multi-stage filter element 90, and purified water is provided for a user, namely, the source water passes through the purified water system 100 to obtain purified water.

According to an embodiment of the present invention, the purified water system 100 forms a plurality of purified water circuits of different purification levels, thereby providing purified water of different purification levels.

The purified water system 100 can supply purified water of different purification levels according to user's demands, for example, semi-purified water can be provided when the purified water is used in a kitchen or a bathroom, and fully purified water can be provided when the purified water is for user's drinking. That is to say, in purification process, not all filter cores all need to purify work, in half purification process, only need some filter cores to work to the working life of extension part filter core utilizes the resource more rationally.

The multi-stage filter element 90 can include a first stage filter element 91, a second stage filter element 92 and a third stage filter element 93, that is, the purified water system 100 includes three stage purified filter elements, in the embodiment of the present invention, the multi-stage filter element 90 can be more or less filter elements with purification stages, thereby forming different stages of purified water systems 100, such as a two-stage purified water system 100 formed by the first stage filter element 91 and the second stage filter element 92, a four-stage purified water system 100 formed by the first stage filter element 91, the second stage filter element 92, the third stage filter element 93 and a fourth stage filter element, or a more than four-stage purified water system 100, and it should be understood by those skilled in the art that the present invention is not limited in this respect.

The purification grade of each stage of the filter element can be sequentially improved, for example, the first stage purification filter element can be coarse filtration, such as a PP cotton filter element or a composite filter element, the second stage filter element 92 can be high-precision filtration, such as a reverse osmosis membrane filter element (RO membrane filter element), and the third stage filter element 93 can be higher-precision filtration. Of course, each stage of filter element can be other types of filter elements, and is not limited to the illustrated example.

According to this embodiment of the present invention, the purified water system 100 is provided with a source water inlet 101, a primary water outlet 102 and a secondary water outlet 103 for receiving source water, for example, but not limited to, the source water inlet 101 is connected to a tap water pipeline to obtain tap water. The primary water outlet 102 is used to provide primary purified water, and the primary water outlet 102 is connected to a kitchen faucet for providing kitchen bath water, for example, but not limited thereto. The secondary water outlet 103 is for providing secondary filtered water. It is worth mentioning that the primary filtered water may be a primary filtered water, and may also be a secondary or tertiary filtered water. The secondary filtered water may be filtered twice, or filtered three or four times, that is, the multi-stage filter element 90 and the filtering times may be set according to the requirement.

Further, according to this embodiment of the present invention, the purified water system 100 includes a primary purified water circuit 10, and the primary purified water circuit 10 performs a filtering function by a part of the multi-stage filter element 90. That is, in the primary purification circuit 10, not all the cartridges are operated.

Referring to fig. 2, according to this embodiment of the present invention, the primary purification water circuit 10 includes a first stage cartridge 91 and a low pressure switch 12, the first stage cartridge 91 is connected to the source water inlet 101 at one end and to the low pressure switch 12 at the other end, and the low pressure switch 12 is connected to the primary water outlet 102. That is, the source water enters the first stage filter element 91 through the source water inlet 101, and after being filtered for the first time by the first stage filter element 91, the source water is controlled to be delivered to the primary water outlet 102 through the low pressure switch 12. When a water using device is connected to the primary water outlet 102, then primary filtered water may be obtained at the water using device 200. For example, when the primary water outlet 102 is connected to a faucet, the primary filtered water may be directly accessed by the faucet's switch.

It should be noted that in this embodiment of the present invention, only one first-stage filter element 91 is disposed in the primary purification water circuit 10, that is, the primary purified water obtained by purifying the source water through one filtration is the primary filtered water, but in other embodiments of the present invention, the primary purification water circuit 10 may include a plurality of filter elements, that is, the primary purified water obtained by purifying through multiple filtration, and the present invention is not limited in this respect.

Further, the primary purified water path 10 includes a first flow meter 11, and the first flow meter 11 is connected between the first stage filter 91 and the low pressure switch 12, that is, the first flow meter 11 is used for detecting the flow of water filtered by the first stage filter 91, and also, the first flow meter 11 is used for detecting the total flow of water entering the purified water system 100

In other embodiments of the present invention, the primary purified water circuit 10 may further include other components, such as, but not limited to, a control valve, which may be disposed at the front end of the first stage cartridge 91 for controlling the total water supply to the purified water system 100.

The purified water system 100 includes a secondary purified water path 20, and the secondary purified water path 20 includes the first stage filter element 91, the second stage filter element 92, and the third stage filter element 93. That is, after the source water is connected to the source water inlet 101, the source water is subjected to the third purification of the first-stage filter element 91, the second-stage filter element 92 and the third-stage filter element 93 in sequence, and then secondary purified water is obtained. Of course, in other embodiments of the present invention, the secondary purified water circuit 20 may have only the first stage filter element 91 and the second stage filter element 92, i.e., the secondary purified water is obtained by filtering the two filter elements; in other embodiments of the present invention, the secondary purified water circuit 20 may also include more filter elements, and the secondary purified water is obtained after more purification.

Further, the primary purification water path 10 and the secondary purification water path 20 share the first stage filter element 91, that is, after the source water is filtered by the first stage filter element 91, the obtained primary purified water is divided into two paths at the rear end, wherein one path is directly output, and the other path is transmitted to the second stage filter element 92. More specifically, the primary purification circuit 10 is divided into two paths in the low pressure switch 12 position.

First order filter core 91 second level filter core 92 with third level filter core 93 is the intercommunication of establishing ties in proper order, and source water gets into first order filter core 91, by first order filter core 91's the other end flows, through first flowmeter 11 with low pressure switch 12, and then secondary drainage is divided into two routes, wherein extremely all the way to primary water export 102, another way is carried extremely the one end of second level filter core 92, process after second level filter core 92's filtration purification, continue to carry to third level filter core 93, process the output after the filtration of third level filter core 93, promptly, obtain secondary purified water.

According to one embodiment of the present invention, the first stage filter 91 is a composite filter, the second stage filter 92 is a reverse osmosis membrane filter, and the third stage filter 93 is a composite filter, which is located at the rear end of the reverse osmosis membrane filter and can be also called a rear composite filter. The internal filter materials of the rear composite filter element and the front composite filter element are different, so that the taste of the discharged water can be improved, and secondary pollution can be prevented.

It is worth mentioning that each of the filter cartridges and other components may be connected by a pipe member to communicate a water path between the components, and the pipe members are not described in detail herein.

According to this embodiment of the invention, the secondary purified water circuit 20 includes a water inlet solenoid valve 21, the water inlet solenoid valve 21 being used to control the primary purified water entering the second stage cartridge 92. The water inlet solenoid valve 21 is disposed after the low pressure switch 12. That is, after the primary purified water filtered by the first stage filter element 91 is divided, one of the outputs is controlled by the water consumption device at the water outlet, and the other one of the outputs is controlled by the water inlet electromagnetic valve 21. Of course, in other embodiments of the present invention, the water inlet solenoid valve 21 may not be provided, and the present invention is not limited in this respect.

According to this embodiment of the invention, the secondary purified water circuit 20 comprises a high-pressure pump 22, the high-pressure pump 22 being used to supply water to the second-stage filter element 92, i.e. the first-stage filter element 91 can supply a flow of water by means of the pressure of the source water, while the second-stage filter element 92 requires an incoming flow of water to be supplied by the high-pressure pump 22, and the switching of the water is controlled by the operation of the high-pressure pump 22.

Further, the high-pressure pump 22 is disposed between the water inlet solenoid valve 21 and the second stage filter cartridge 92. That is, the high-pressure pump 22 is connected to the water inlet solenoid valve 21 and the second-stage filter element 92 through pipes, respectively.

One end of the second stage filter element 92 is connected to the high pressure pump 22, and the other end is connected to the third stage filter element 93. Preferably, the second stage cartridge 92 is a reverse osmosis membrane cartridge.

The secondary purified water path 20 includes a pressure reducing valve 23 and a water tank 25, the pressure reducing valve 23 connects the third stage filter 93 and the water tank 25, and the water tank 25 is used to store secondary purified water. It is worth mentioning that the water supplied to the first filter element 91 by the high pressure pump 22 has a high water pressure, and the first filter element 91 and the second filter element 92 can perform the purification and filtration process more smoothly by the water pressure, so that the water pressure of the secondary purified water outputted after being filtered by the second filter element 92 is high, and therefore the pressure reducing valve 23 is provided between the water tank 25 and the second filter element 92, so that the pressure of the water flow in the pipeline is reduced, the water flow enters the water tank 25 relatively slowly, and the instability of the device caused by the impact and the noise caused thereby are avoided.

Further, the pressure reducing valve 23 is a one-way pressure reducing valve 23 to control the direction of water flow. That is, the water flow can only flow from the second stage filter 92 to the tank 25, but not in the reverse direction, thus preventing the water flow from flowing back to secondarily contaminate the second stage filter 92. The pressure relief valve 23 may be a valve body component or may be a combination of two valve body components, such as a separate check valve 24 and a separate subtraction valve, although the invention is not limited in this respect.

According to this embodiment of the present invention, the secondary purified water circuit 20 further includes a flow control assembly 26, and the flow control assembly 26 is used for controlling the flow in the secondary purified water circuit 20. More specifically, the flow control assembly 26 is disposed at a rear end of the water tank 25, that is, the flow control assembly 26 is used for controlling a flow rate of the secondary purified water flowing out of the water tank 25.

In one embodiment of the present invention, the flow control assembly 26 includes a water outlet solenoid valve for integrally controlling the on/off of the water flow, a flow regulating valve for regulating the water flow, and a second flow meter for detecting the water flow. Further, the flow regulating valve regulates and controls water flow according to the current flow detected by the second flowmeter. In other embodiments of the present invention, the flow control assembly 26 may be formed by other components, such as the absence of the second flow meter, and the present invention is not limited in this respect.

According to this embodiment of the present invention, the secondary purified water circuit 20 further includes an instant heating module 27, and the instant heating module 27 is used for heating the purified water so that the secondary purified water becomes hot water with a predetermined stable temperature. The instant heating module 27 is disposed at the rear end of the flow control module 7326. That is, the water flowing out of the flow control module 7326 enters the instant heating module 27 at a predetermined flow rate, and is heated by the instant heating module 27 and then is output.

According to this embodiment of the present invention, the secondary purification water circuit 20 further includes a water-gas separation module 28, and the water-gas separation module 28 is used for performing water-gas separation on the water heated by the instant heating module 27. The water-gas separation module 28 is disposed at the rear end of the instant heating module 27, that is, the secondary purified water heated by the instant heating module 27 directly enters the water-gas separation module 28, and is output after being subjected to water-gas separation by the water-gas separation module 28. The water gas separation module 28 communicates with the secondary water outlet 103, or the water gas separation module 28 forms the secondary water outlet 103. The secondary water outlet 103 may be formed by connecting a pipe or a control switch to the outlet of the water gas separation module 28, or may be formed directly from the outlet of the water gas separation module 28.

Furthermore, during manufacturing, different purification water paths can be communicated through pipelines according to different requirements, and the fully purified water or the semi-purified water with different purification grades can be obtained. Preferably, according to one embodiment of the present invention, the first stage cartridge 91 communicates with the primary water outlet 102, thereby forming a primary purified water circuit 10. The first stage filter element 91 is communicated with the second stage filter element 92, the second stage filter element 92 is communicated with the third stage filter element 93, and the third stage filter element 93 is communicated with the secondary water outlet 103, so that the secondary purification water path 20 is formed. That is, the purification unit may provide semi-purified water of one purification level and fully purified water of three purification levels. Further, the semi-purified water can be used for cleaning a kitchen or a bathroom of a user, and the fully-purified water can be used for drinking by the user. That is, when a user uses a large volume of water in a kitchen or bathroom, only a portion of the filter cartridge is required to operate, such as only the first stage filter cartridge 91, while the remaining second and third

stage filter cartridges

92, 93 are not operated, and when a user drinks or otherwise uses a smaller volume of water, all of the filter cartridges need to be operated, thereby substantially reducing the operation of the second and third

stage filter cartridges

92, 93. The filtration grade of the first stage filter element 91, the second stage filter element 92 and the third stage filter element 93 is sequentially improved, that is, the higher the precision of the sequential filtration is. And the higher the precision is, the higher the price is, the more expensive, therefore, partial filter element working mode can reduce the replacement frequency of the filter element with higher precision, and the expense of the cost is reduced.

In other embodiments of the present invention, other purified water circuits may be formed, such as, for example, a second-stage purified-grade semi-purified water, a third-stage purified-grade fully purified water, such as, for example, a third-stage purified-grade semi-purified water, a fourth-stage purified-grade fully purified water, such as, for example, a fourth-stage purified-grade semi-purified water, and a fifth-stage purified-grade fully purified water, and it should be understood by those skilled in the art that the present invention is not limited in this respect.

The purified water system 100 further comprises a protection waterway 30, wherein the protection waterway 30 is used for reducing the soluble fixed concentration of the filter element in the water environment and protecting the filter element. Specifically, when the purified water system 100 is not in operation, the protection waterway 30 delivers water to the predetermined filter element by means of source water pressure, reduces the concentration of soluble solids in the water environment of the filter element, and protects the filter element.

In this embodiment of the invention, the protection circuit 30 is disposed in the second stage cartridge 92 to protect the second stage cartridge 92. Preferably, the second stage cartridge 92 is a reverse osmosis membrane cartridge. Specifically, when the purified water system 100 is not in operation, the protection waterway 30 delivers water to the reverse osmosis membrane cartridge by means of source water pressure, reduces the concentration of soluble solids in the water environment of the reverse osmosis membrane cartridge, and protects the reverse osmosis membrane cartridge.

The protection water path 30 includes a constant pressure check valve 31, and the constant pressure check valve 31 is connected to the outer side of the high pressure pump 22 and one side of the second stage filter element 92 through a pipeline, controls water flow to directly enter the second stage filter element 92, and prevents the water flow from flowing reversely. When the high pressure pump 22 is not operating, the high pressure pump 22 does not deliver water to the second stage filter element 92, and the primary purified water filtered by the first stage filter element 91 passes through the one-way valve 24 by the pressure of the source water and further into the second stage filter element 92, thereby maintaining a water environment within the second stage filter element 92, reducing the concentration of the total amount of soluble solids in the second stage filter element 92 and avoiding soluble solids from sticking within the filter element. When the high pressure water pump is operated, since the water flow is mainly delivered by the high pressure water pump, the water flow pressure in the protection water circuit 30 is low, and therefore the water flow does not flow to the second stage filter element 92 through the constant pressure check valve 31.

It is worth mentioning that the water pressure passing through the constant pressure check valve 31 needs to be larger than a predetermined value to pass through the check valve 24, and not any water flow can pass through the constant pressure check valve 31 to enter the second stage filter element 92. The pressure of the constant pressure check valve 31 can be selected according to the requirement, for example, according to the actual source water pressure as a reference, and in one embodiment of the present invention, the constant pressure check valve 31 is the 2.5Kg check valve 24. It is worth mentioning that the second stage filter element 92 is usually a reverse osmosis membrane filter element, and its price is high, when the reverse osmosis membrane filter element is in operation, if in the soluble solid particle environment of high concentration for a long time, the reverse osmosis membrane is easily blocked by the particles, thereby reducing the service life of the reverse osmosis membrane filter element, and when the environment where the reverse osmosis membrane filter element is located keeps more moisture all the time, namely, the concentration of the soluble fixed particles is lower, thereby making the reverse osmosis membrane filter element in operation, it can smoothly continue to operate, and can not be because the high concentration of the earlier stage when not operating and the normal work of image, thereby making the service life extension of the reverse osmosis membrane, but can not influence the result of use, reduce use cost from another angle.

It should also be mentioned that in this embodiment of the invention, the protection circuit is arranged in the second-stage filter element 92, i.e. to protect the second-stage filter element 92, but in other embodiments of the invention, the protection circuit 30 can also be arranged in other filter elements, such as a third-stage filter element 93, to which the invention is not limited in this respect.

The purified water system 100 further includes a backwash water circuit 40, and the backwash water circuit 40 is used for backwashing a predetermined filter element and discharging contaminated water. The purified water system 100 is provided with a waste water outlet 104 for discharging the waste water. The filter core has an import 921, an export 922 and a back flush export 923, works as when the filter core is in back flush operating condition, rivers by import 921 gets into, by back flush export 923 flows. When the filter element is in a filtering operation state, water flows in through the inlet 921 and flows out through the outlet 922.

The backwashing water circuit 40 includes a flushing solenoid valve 41, and the flushing solenoid valve 41 is disposed between the filter element and the wastewater outlet 104, that is, the wastewater discharged from the filter element flows out of the wastewater outlet 104 through the backwashing solenoid valve 41. Further, in this embodiment of the present invention, the backwash water circuit 40 is provided to the second stage filter element 92, that is, for backwashing operation of the second stage filter element 92.

Further, the flushing solenoid valve 41 is connected to the back flush outlet 823 of the second stage filter element 92.

When the purified water system 100 does not work for a long time or within a predetermined time, the backwashing water path 40 works, that is, the backwashing water path 40 of the purified water system 100 starts backwashing the filter elements, so as to perform cleaning and maintenance work on the filter elements. The back washing process can be automatic washing or manual washing. It is worth mentioning that when the filter element does not work for a long time, the water amount in the filter element is less, the concentration of solid particles is higher, and the filter element is not processed for a long time, so that the solid contained substances can be remained in the filter element along with the reduction of the water amount, and the filtering effect of the filter element is weakened. And the regular back washing ensures that pollutants or residues can not be accumulated and stay in the filter element, thereby ensuring that the filtering effect is better. The working time of the backwashing water circuit 40 can be set according to the requirement, for example, when the purified water system is judged not to work for 3 days, the backwashing water circuit 40 starts backwashing.

More specifically, when the purified water system 100 is not operated for a long time or for a predetermined time, the backwashing water circuit 40 is operated, that is, the backwashing water circuit 40 of the purified water system 100 starts backwashing the second-stage filter element 92, and the second-stage filter element 92 is cleaned and maintained. It should be noted that in this embodiment of the present invention, the backwash water path 40 is disposed in the second stage filter element 92, and in other embodiments of the present invention, the backwash water path 40 may be disposed in other filter elements, but the present invention is not limited in this respect.

It can be seen that in this embodiment of the present invention, the protection waterway 30 and the backwashing waterway 40 respectively protect the filter element, such as the second-stage filter element 92, from two angles of backwashing and increasing water capacity, and soluble solids and impurities are reduced as much as possible from remaining in the filter element, so that the filter element has better purification effect and longer service life.

The purified water system 100 includes a old water discharge waterway 50, and the old water discharge waterway 50 is used to discharge the used residual water of the purified water system 100 to keep the purified water system 100 clean and prevent the residual water from being polluted.

The old water discharge waterway 50 includes a discharge control valve 51, and the discharge control valve 51 is provided to the secondary purified waterway 20 to discharge water in the secondary purified waterway 20. Further, one end of the drain control valve 51 is connected to the water tank 25 to drain the water amount of the water tank 25 and the communication pipe. The other end of the control valve is connected to the waste water outlet 104, that is, the remaining water is also discharged through the waste water outlet 104.

In one embodiment of the present invention, the drain control valve 51 may be connected to a water pump connected to the water tank 25 so as to draw the residual water in the water tank 25 and the communication pipe by the water pump.

It is worth mentioning that if the water in the water tank 25 and the pipeline remains for a long time and does not flow, the water will deteriorate and cannot be used, and adversely affect the cleanliness of the equipment, and bacteria are easy to grow in a humid environment, so that when the purified water system 100 is not used for a long time, the water in the water tank 25 and the pipeline is removed to keep the water as dry as possible, thereby enabling the purified water system 100 to keep clean and sanitary.

According to an embodiment of the present invention, when the backwash waterway 40 is operated, the old water discharge waterway 50 is not operated, that is, the backwash waterway 40 and the old water discharge waterway 50 are not operated at the same time, or the flush solenoid valve 41 and the drain control valve 51 are not operated at the same time. Alternatively, the old water discharge path 50 and the back flush path 40 are operated in a staggered manner.

Referring to fig. 2 and 3, the purified water system 100 includes a heating protection unit 60, and the heating protection unit 60 is disposed in the secondary purified water path 20 to prevent the secondary purified water path 20 from being dried during a heating operation to damage components.

The heating protection unit 60 includes the water tank 25 and a water level sensor 61, the water tank 25 is communicated with the multi-stage filter 90, and further, the water tank 25 is communicated with the third stage filter 93 through the pressure reducing valve 23. The water level sensor 61 is configured to be disposed at the water tank 25, and configured to monitor a water level of the water tank 25, and when the water level of the water tank 25 is lower than a predetermined value, it indicates that the amount of water in the secondary purified water path 20 to be heated is small, that is, the amount of water in the secondary purified water path 20 is represented by the amount of water in the water tank 25, so as to ensure that there is a sufficient amount of water in the secondary purified water path 20 when the secondary purified water path 20 operates. Specifically, when the water level sensor 61 detects that the water level of the water tank 25 is lower than a predetermined value, a signal is sent to the instant heating module 27 to stop the heating operation of the instant heating module 27.

The heating and protection unit 60 includes a temperature sensor 62, and the temperature sensor 62 is disposed at the water tank 25 of the secondary purification unit. When the temperature sensor 62 is disposed at the instant heating module 27, and when the temperature sensor 62 detects that the temperature of the instant heating module 27 exceeds a predetermined value, a signal is sent to the secondary purified water circuit 20 to stop the heating operation of the instant heating module 27. Further, the temperature sensor 62 may be a dual NTC temperature sensing.

During operation, when one or both of the water level in the water tank 25 is lower than a predetermined value and the temperature of the instant heating module 27 detected by the temperature sensor 62 is higher than a predetermined value, a circuit for opening the secondary purified water circuit 20 may be provided to stop the heating operation of the instant heating module 27.

It can be seen that in the heating protection unit 60 of the secondary purified water circuit 20, dry burning of the secondary purified water circuit 20 is prevented by detecting the temperatures of the water tank 25 and the instant heating module 27, respectively. By providing the water tank 25 and by monitoring the amount of water in the water tank 25, the amount of water to be heated is determined, in which case the instant heating module 27 does not face dry burning without water by the pre-determination even if the instant heating module 27 is normally operated. The temperature of the instant heating module 27 is monitored, which may be caused by a small amount of water, or the instant heating module 27 works for a long time or the instant heating module 27 works under a water-free condition for a long time, which indicates that the instant heating module 27 has already worked in an abnormal state, i.e., the problem that the instant heating module 27 has already worked is timely handled, so that the overheating working state of the secondary purification water path 20 is more comprehensively prevented through different stages and different directions, and the damage of components is reduced.

Referring to fig. 4 and 2, the purified water system 100 includes a multiple temperature control unit 70, and the multiple temperature control unit 70 is configured to monitor the temperature of the secondary purified water circuit 20 at multiple points to ensure that the temperature of the outlet water of the secondary water outlet 103 of the secondary purified water circuit 20 is more accurate. The multiple temperature control unit 70 further includes a plurality of temperature sensors 62 respectively disposed at different positions of the secondary purification water path 20 for monitoring the multi-point temperatures at different positions in the secondary purification water path 20, and a water flow control module 73 for controlling the flow rate of the secondary water outlet 103 of the secondary purification water path 20 according to the multi-point temperatures monitored by the plurality of temperature sensors to adjust the water temperature at the secondary water outlet.

In one embodiment of the present invention, the multiple temperature control unit 70 includes two temperature sensors, namely a first temperature sensor 71 and a second temperature sensor 72, the first temperature sensor 71 is disposed at the water tank 25, the second temperature sensor 72 is disposed at the water outlet end of the instant heating module 27, and the water temperatures of the two points of the water outlet ends of the water tank 25 and the instant heating module 27 are respectively monitored. The outlet water flow control module 73 controls the flow rate of the secondary water outlet 103 according to the temperature values of the first temperature sensor 71 and the second temperature sensor 72. For example, but not limited to, when the temperature of the first temperature sensor 71 is greater than the temperature of the second temperature sensor 72 by a predetermined range, which indicates that the temperature of the water tank 25 is higher, and the temperature of the delivered water is lower, heat is more dissipated in the transmission, and the water flow control module 73 adjusts to increase the flow rate of the water at the secondary water outlet 103, so that the water outlet temperature approaches the temperature of the water tank 25. When the temperature of the first temperature sensor 71 is smaller than the predetermined range of the temperature value of the second temperature sensor 72, which indicates that the temperature of the output front output is higher, but the temperature of the water at the later stage cannot reach the delivery temperature in time, the outlet flow control module 73 adjusts and reduces the outlet speed, so that the temperature of the water tank 25 can be close to the temperature of the outlet end of the instant heating module 27. Thus, in a different way, the temperature of the continuously delivered water flow of the secondary water outlet 103 is brought close to the desired temperature, instead of a sharp change in the temperature of the water, such as the phenomenon of hot water and cold water.

Further, the outlet flow control module 73 controls the flow of the secondary water outlet 103 according to the temperature demanded by the user, the temperature of the water tank 25 and the temperature of the outlet end of the instant heating module 27, and combines the current flow control, so that the water flow temperature of the secondary water outlet 103 approaches the demanded temperature.

It should be noted that in this embodiment of the present invention, the way of multi-point monitoring control is described by taking the example that a plurality of temperature sensors 62 are respectively disposed at the outlet ends of the water tank 25 and the instant heating module 27, but in other embodiments of the present invention, the temperature sensors may be disposed at other positions, and the water flow rate of the water outlet is adjusted and controlled by monitoring other multi-point positions to adjust the water temperature, for example, the temperature sensors may be disposed at the water outlet end of the water-gas separation module 28, or the temperature sensors may be disposed in the pipeline between the water tank 25 and the instant heating module 27. The number and the arrangement positions of the temperature sensors can be adjusted, and the invention is not limited in this respect.

Further, the water outlet flow control module 73 may include a water outlet solenoid valve, a flow regulating valve and a flow meter, wherein the flow regulating valve is used for regulating water flow, the flow meter is used for detecting water flow, and the water outlet solenoid valve is used for controlling on-off of water flow. According to an embodiment of the present invention, the flow regulating valve and the flow meter are disposed at the position of the secondary water outlet 103 of the secondary purified water circuit 20 to monitor and regulate the water flow of the secondary water outlet 103, respectively, and the outlet water speed of the water outlet is regulated by the flow regulating valve so that the outlet water temperature approaches a predetermined value. In other embodiments of the invention, the flow regulating valve and the flow meter may be located elsewhere, such as at the outlet end of the connected application. It is worth mentioning that the outlet flow control module 73 may be the same module as the flow control module 26 described above.

Referring to fig. 1, the purified water system 100 includes a control unit 80, and the control unit 80 controls the operation of the purified water system 100, for example, the control unit 80 controls the operations of the primary purified water circuit 10, the secondary purified water circuit 20, the guard water circuit 30, the back flush water circuit 40 and the old water discharge circuit 50, including but not limited to controlling the operations or on/off of the circuits. The control unit 80 controls the operations of the heating protection unit 60 and the multiple temperature control unit 70. That is, the control unit 80 integrally controls the operation of the water circuit and the electric circuit of the purified water system 100, including but not limited to controlling the operations of the various valve bodies such as the water inlet solenoid valve 21, the pressure reducing valve 23, the check valve 24, the constant pressure check valve 31, the flushing solenoid valve 41, the water outlet solenoid valve, the flow rate adjusting valve, the water discharge control valve 51, and the like, including but not limited to controlling the heating operation of the instant heating module 27, including but not limited to controlling the water supply operation of the high pressure pump 22.

Further, the control unit 80 may be provided with a control panel for user selection control, for example, the control panel may include turning on or off the lamps of the primary water outlet 102, the secondary water outlet 103 and the waste water outlet 104, may include selecting a flushing mode of the backwashing water circuit 40, and may include selecting an outlet water temperature of the secondary water outlet 103 of the secondary purification water circuit 20.

It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are given by way of example only and are not limiting of the invention. The objects of the invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the examples, and any variations or modifications of the embodiments of the present invention may be made without departing from the principles.

Claims

1. A purified water system, comprising:

2. A purified water system as claimed in claim 1, wherein the secondary purified water circuit includes a high pressure pump disposed at a forward end of the second stage filter element.

3. A purified water system as claimed in claim 2, wherein the purified water system includes a protection circuit including a pressure one-way valve communicating the front end of the high pressure pump and one end of the second stage filter element.

4. A purified water system as claimed in claim 3, wherein the constant pressure one-way valve is a 2.5Kg one-way valve.

5. A purified water system as claimed in claim 2, wherein the secondary purified water circuit includes a water inlet solenoid valve disposed at a front end of the high pressure water pump.

6. A purified water system as claimed in claim 3, wherein said secondary stream of purified water comprises a water inlet solenoid valve disposed at a forward end of said high pressure pump, said check valve communicating to a rearward end of said water inlet solenoid valve.

7. A purified water system as claimed in claim 5, wherein the water path through the first stage filter element is divided into two paths, one path communicating with the primary water outlet and the other path communicating with the water inlet solenoid valve.

8. A purified water system as claimed in claim 2, wherein the secondary purified water circuit includes a pressure relief valve disposed at a rear end of the second stage filter element.

9. A purified water system as claimed in claim 1, comprising a backwash waterway, said backwash waterway comprising a flush solenoid valve, said flush solenoid valve communicating the backwash outlet of said second stage purification cartridge with the waste water outlet of said purified water system.

10. A purified water system as claimed in claim 1, wherein the secondary purified water circuit comprises a tank disposed at a rear end of the second stage filter element and an instant heating module disposed at a rear end of the tank.

11. A purified water system as claimed in claim 10, wherein the secondary purified water circuit comprises a water-gas separation module disposed at a rear end of the instant module.

12. A purified water system as claimed in claim 10, comprising a stale water discharge conduit including a discharge control valve communicating the tank and a waste water outlet of the purified water system.

13. The purified water system of claim 10, wherein the secondary purified water circuit comprises a flow control module disposed between the tank and the instant heating module.

14. A purified water system as claimed in claim 12, which includes a back flush waterway including a flush solenoid valve communicating the back flush outlet of the second stage purification cartridge with the waste water outlet of the purified water system, the old water discharge waterway and the back flush waterway operating in staggered relation.

15. A purified water system as claimed in any one of claims 1 to 14, wherein the primary purified water circuit includes a low pressure switch disposed at the rear end of the first stage filter element.

16. A purified water system as claimed in claim 15, wherein the primary purified water circuit includes a flow meter disposed between the low pressure switch and the first stage filter element.

17. A purified water system as claimed in any one of claims 1 to 14, wherein the secondary purified water circuit includes a third filter element disposed at the rear end of the second filter element.

18. A purified water system as claimed in any one of claims 1 to 14, wherein the second stage filter element is a reverse osmosis membrane filter element.

19. A purified water system as claimed in any one of claims 10 to 14, comprising a heating protection unit, said heating protection unit comprising a water level sensor, said water level sensor being disposed in said water tank, said water level sensor monitoring the water level in said water tank and controlling said instant heating module to stop heating when the water level is below a predetermined value.

20. A purified water system as claimed in claim 19, wherein the heating unit comprises a temperature sensor, the temperature sensor is disposed at the instant heating module, the temperature sensor monitors the temperature of the instant heating module, and the instant heating module is controlled to stop heating when the temperature of the instant heating module exceeds a predetermined value.

21. A purified water system as claimed in any one of claims 10 to 13, comprising a multiple temperature control unit, said multiple temperature control unit comprising a first temperature sensor, a second temperature sensor and a flow control module, said first temperature sensor being disposed in said tank to monitor the temperature of water in said tank, said second temperature sensor being disposed in said instant heating module to monitor the temperature of water exiting said instant heating module, said flow control module adjusting said secondary water outlet flow in response to the temperature of said first temperature unit and said second temperature unit.

22. A purified water system is characterized by comprising

A first filter element;

a second stage filter element;

a high pressure water pump;

23. A purified water system as claimed in claim 22, wherein the second stage filter element is a reverse osmosis membrane filter element.

24. A purified water system, comprising:

a first stage filter element;

a second stage filter element;

a water tank;

an instant heating module; and

25. A purified water system as claimed in claim 24, wherein the heating unit comprises a temperature sensor, the temperature sensor is disposed at the instant heating module, the temperature sensor monitors the temperature of the instant heating module, and the instant heating module is controlled to stop heating when the temperature of the instant heating module exceeds a predetermined value.

26. A purified water system as claimed in claim 24, wherein the purified water system includes a high pressure pump disposed between the first stage filter element and the second stage filter element.

27. A purified water system, comprising:

a first stage filter element;

a second stage filter element;

a water tank;

an instant heating module; and

28. The purified water system of claim 27, wherein the flow control module controls the flow of the secondary water outlet in conjunction with a demand temperature, the temperatures of the first temperature sensor and the second temperature sensor.

29. A purified water system as claimed in claim 27, wherein the purified water system includes a high pressure pump disposed at a front end of the second stage cartridge.

30. A purified water system as claimed in claim 29, wherein the purified water system includes a water inlet solenoid valve, the water inlet solenoid valve being disposed at a front end of the high pressure pump, a water path through the first stage filter element being divided into two paths, one path communicating with a primary water outlet, the other path communicating with the water inlet solenoid valve.