CN219341936U

CN219341936U - Water treatment equipment

Info

Publication number: CN219341936U
Application number: CN202223144688.XU
Authority: CN
Inventors: 吴理进; 李键; 谭俊
Original assignee: Qingdao Haier Strauss Water Equipment Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Strauss Water Equipment Co Ltd; Haier Smart Home Co Ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-07-14
Anticipated expiration: 2032-11-25

Abstract

The utility model relates to the technical field of water treatment equipment, in particular to water treatment equipment, and aims to solve the problem that a water purification module of an existing water purifier is easy to start and stop frequently. For this purpose, the water treatment device of the utility model comprises a reverse osmosis filter element, a water inlet pipeline, a water outlet pipeline, a return pipeline and a flow regulating valve; two ends of the water inlet pipeline are respectively connected with an inlet of the reverse osmosis filter element and a water source, and the water inlet pipeline is provided with a booster pump; the two ends of the water outlet pipeline are respectively connected with a pure water outlet of the reverse osmosis filter element and a water outlet of the water treatment equipment, and the water outlet pipeline is provided with an on-off valve, a temperature regulating device and a high-pressure switch positioned at the upstream of the on-off valve; two ends of the return pipeline are respectively connected with a pure water outlet and a pipe section of the water inlet pipeline, which is positioned at the upstream of the booster pump; the flow regulating valve is used for regulating the proportion of pure water flowing to the water outlet pipeline and the return pipeline from the pure water outlet; the booster pump, the high-voltage switch, the temperature regulating device and the flow regulating valve are in communication connection with a controller of the water treatment equipment.

Description

Water treatment equipment

Technical Field

The utility model relates to the technical field of water treatment equipment, and particularly provides water treatment equipment.

Background

The water purifier on the market generally comprises a water purifying module, a temperature adjusting module (such as a heating module or a refrigerating module), an electric control module, a pure water tank and the like, wherein the pure water tank is arranged between the water purifying module and the temperature adjusting module, pure water generated by the water purifying module enters and is stored in the pure water tank, and water in the pure water tank is supplied to a user after being subjected to temperature adjustment (heating or refrigerating) by the temperature adjusting module.

The pure water tank occupies a larger internal space, so that the body of the pure water machine is large and heavy, and the pure water tank is inconvenient to place. In addition, bacteria are easy to grow in the pure water tank. Therefore, the improved pure water machine removes a pure water tank, and the pure water outlet of the pure water module is directly connected with the inlet of the temperature adjusting module.

The temperature adjustment module changes the temperature of the flowing pure water when preparing pure water of different temperatures. Due to the limitation of the power of the temperature adjusting module, the adjustment of various temperatures cannot be satisfied. Therefore, the success rate of the temperature adjusting module is unchanged, and the temperature of the water outlet is adjusted by adjusting the water outlet flow through the water outlet valve. However, the water purification module has a fast water production rate, and when pure water with different temperatures is prepared, the flow rate of the pure water required by the temperature adjustment module is different, and the flow rate of the required water is smaller than that of the pure water produced by the water purification module. When the water outlet valve is opened, the water pressure at the high-pressure switch is smaller than a first set value, and the controller controls the water purifying module to work according to the water pressure. When the flow of water required by the temperature regulating module is smaller than the flow of pure water produced by the water purifying module, the water pressure at the high-pressure switch is increased to a second set value, the controller controls the water purifying module to stop working according to the water pressure value at the high-pressure switch, then the water pressure value at the high-pressure switch is reduced, when the water pressure value at the high-pressure switch is reduced to a first set value, the controller controls the water purifying module to work, the water pressure at the high-pressure switch is increased to the second set value again, the controller controls the water purifying module to stop working according to the water pressure value, and the water purifying module is caused to start and stop frequently by circulation.

Accordingly, there is a need in the art for a new solution to the above-mentioned problems.

Disclosure of Invention

The utility model aims to solve the technical problem that a water purifying module of the existing water purifier is easy to start and stop frequently.

The utility model provides water treatment equipment, which comprises a reverse osmosis filter element, a water inlet pipeline, a water outlet pipeline, a return pipeline and a flow regulating valve; the downstream end of the water inlet pipeline is connected with the inlet of the reverse osmosis filter element, the upstream end of the water inlet pipeline is used for being connected with a water source, and the water inlet pipeline is provided with a booster pump; the two ends of the water outlet pipeline are respectively connected with a pure water outlet of the reverse osmosis filter element and a water outlet of the water treatment equipment, and the water outlet pipeline is provided with a first on-off valve, a temperature regulating device and a high-pressure switch positioned at the upstream of the first on-off valve; the upstream end of the return pipeline is connected with the pure water outlet, and the downstream end of the return pipeline is connected with a pipe section of the water inlet pipeline, which is positioned at the upstream of the booster pump; the flow regulating valve is used for regulating the ratio of the pure water flowing to the water outlet pipeline from the pure water flowing to the return pipeline; the booster pump, the high-voltage switch, the temperature regulating device and the flow regulating valve are in communication connection with a controller of the water treatment equipment.

In the preferable technical scheme of the water treatment equipment, the flow regulating valve is a three-way proportional regulating valve, an inlet of the three-way proportional regulating valve is connected with the pure water outlet, and two outlets of the three-way proportional regulating valve are respectively connected with the upstream end of the water outlet pipeline and the upstream end of the return pipeline.

In the preferable technical scheme of the water treatment equipment, the return pipeline is further provided with a second on-off valve, and the second on-off valve is in communication connection with the controller.

In a preferred embodiment of the above water treatment apparatus, the return line is further provided with a first check valve that is communicated from an upstream end to a downstream end of the return line.

In the preferred technical scheme of the water treatment device, a second one-way valve which is communicated from the upstream end to the downstream end of the water outlet pipeline is further arranged on a pipe section of the water outlet pipeline, which is positioned at the upstream of the high-voltage switch and the temperature regulating device.

In the preferable technical scheme of the water treatment equipment, the flow regulating valve comprises a first regulating valve and a second regulating valve, the first regulating valve is arranged on a pipe section of the water outlet pipeline, which is positioned at the upstream of the high-pressure switch and the temperature regulating device, and the second regulating valve is arranged on the return pipeline.

In a preferred embodiment of the above water treatment apparatus, the high-voltage switch is located upstream of the temperature adjusting device.

In the preferable technical scheme of the water treatment equipment, a preposed filter element is further arranged on a pipe section of the water inlet pipeline, which is positioned at the upstream of the booster pump.

In the preferable technical scheme of the water treatment equipment, a third on-off valve is arranged between the preposed filter element and the booster pump.

In the preferable technical scheme of the water treatment equipment, a rear filter element is further arranged on a pipe section of the water outlet pipeline, which is positioned at the upstream of the temperature regulating device.

In the preferable technical scheme of the water treatment equipment, the high-voltage switch is arranged at the upstream of the post-filter element, and the first on-off valve is arranged at the downstream of the post-filter element.

In a preferred embodiment of the above water treatment apparatus, the temperature adjusting means comprises heating means.

In a preferred embodiment of the above water treatment apparatus, the temperature adjusting device includes a refrigerating device.

In a preferred embodiment of the above water treatment apparatus, the temperature adjusting device includes a heating device and a cooling device.

In a preferred embodiment of the above water treatment apparatus, the water treatment apparatus includes a waste water pipe, an upstream end of which is connected to a waste water outlet of the reverse osmosis cartridge, and a downstream end of which is connected to the outside.

Under the condition of adopting the technical scheme, the water treatment equipment comprises a reverse osmosis filter element, a water inlet pipeline, a water outlet pipeline, a return pipeline and a flow regulating valve; the downstream end of the water inlet pipeline is connected with the inlet of the reverse osmosis filter element, the upstream end of the water inlet pipeline is used for connecting a water source, and the water inlet pipeline is provided with a booster pump; the two ends of the water outlet pipeline are respectively connected with a pure water outlet of the reverse osmosis filter element and a water outlet of the water treatment equipment, and the water outlet pipeline is provided with a first on-off valve, a temperature regulating device and a high-pressure switch positioned at the upstream of the first on-off valve; the upstream end of the return pipeline is connected with the pure water outlet, and the downstream end of the return pipeline is connected with a pipe section of the water inlet pipeline, which is positioned at the upstream of the booster pump; the flow regulating valve is used for regulating the ratio of the pure water flowing to the water outlet pipeline from the pure water outlet to the pure water flowing to the return pipeline; the booster pump, the high-voltage switch, the temperature regulating device and the flow regulating valve are in communication connection with a controller of the water treatment equipment.

When the first on-off valve is opened, the high-pressure switch detects that the water pressure at the position is reduced to a first set value, at the moment, the controller controls the booster pump and the temperature regulating device to work, and the controller controls the opening of the flow regulating valve according to the water outlet temperature set by a user, so that the flow of pure water flowing to the water outlet channel from the pure water outlet of the reverse osmosis filter element is matched with the water outlet temperature input by the user. The pure water generated after being filtered by the reverse osmosis filter element flows to the flow regulating valve from the pure water outlet, the pure water flowing out of the flow regulating valve is divided into two parts to flow to the water outlet pipeline and the return pipeline respectively, the water flowing into the water outlet pipeline is changed into pure water with set temperature after being regulated by the temperature regulating component and flows out of the water outlet, the pure water flowing into the return pipeline flows back to the pipe section positioned at the upper stream of the booster pump on the water inlet pipeline, and the part of pure water and the water provided by the water source flow to the reverse osmosis filter element after being pressurized by the booster pump.

Through such setting, can make the flow of the pure water that flows to the play water return circuit and the play water temperature assorted of user's setting, and the unnecessary pure water that the pure water export of reverse osmosis filter core flows back to the pipeline section that is located the booster pump on the inlet tube way, guaranteed under the circumstances of different play water temperatures that the flow of the required water of temperature regulation device is the same with the flow of the pure water that flows to temperature regulation device, guaranteed that the water pressure of high-pressure switch department remains unchanged basically in the water production process, avoided the water pressure of water pressure switch department frequently to change and lead to the frequent condition emergence of starting and stopping of booster pump.

Preferably, the flow regulating valve is a three-way proportional regulating valve, an inlet of the three-way proportional regulating valve is connected with the pure water outlet, and two outlets of the three-way proportional regulating valve are respectively connected with the upstream end of the water outlet pipeline and the upstream end of the return pipeline.

Through such setting, part quantity is comparatively less, and the production assembly of being convenient for, flow control's synchronism is higher, is convenient for the regulation of the proportion of the pure water that flows to outlet pipe and return line.

Preferably, the high voltage switch is located upstream of the temperature regulating device.

Through the arrangement, the high-voltage switch can be prevented from being in a pure water environment with low temperature or high temperature, and the service life of the high-voltage switch is prolonged.

Preferably, a front filter element is further arranged on a pipe section of the water inlet pipeline, which is positioned at the upstream of the booster pump.

Through such setting, water flows to the reverse osmosis filter core after being pressurized by the booster pump after being filtered by the preposed filter core, so that the water purifying effect can be further improved, the consumption of the reverse osmosis filter core is reduced, the service life of the reverse osmosis filter core is prolonged, the use cost is reduced as a whole, and the use experience of a user is optimized.

Preferably, a post filter element is further arranged on a pipe section of the water outlet pipeline, which is positioned at the upstream of the temperature regulating device.

Through such setting, when the pure water that flows from the pure water export of reverse osmosis filter core flows to the delivery port of water treatment facilities through outlet pipeline, this partial pure water is further filtered through the rear-mounted filter core, can improve the taste of water, further optimizes user's use experience.

Preferably, the temperature regulating means comprises heating means or cooling means.

With such an arrangement, the water treatment apparatus is able to provide boiled water or cold water to a user in order to meet different demands of the user.

Preferably, the temperature regulating means comprises heating means and cooling means. For example, the main road of the water outlet pipeline is connected with the inlet of a three-way valve, two outlets of the three-way valve are respectively connected with two branches, a heating device and a refrigerating device are respectively arranged on the two branches, and the downstream ends of the two branches are both connected to the water outlet of the water treatment equipment. When cold water is required to be prepared, the state of the three-way valve is regulated, so that the main circuit of the water outlet pipeline is communicated with the branch circuit provided with the refrigerating device, the main circuit of the water outlet pipeline is disconnected with the branch circuit provided with the heating device, the refrigerating device is controlled to work, and pure water flowing from the pure water outlet of the reverse osmosis filter element to the water outlet pipeline flows through the refrigerating device to be changed into cold water. When hot water is needed to be prepared, the state of the three-way valve is regulated, so that the main road of the water outlet pipeline is communicated with the branch road provided with the heating device, the main road of the water outlet pipeline is disconnected with the branch road provided with the refrigerating device, the heating device is controlled to work, and pure water flowing from the pure water outlet of the reverse osmosis filter element to the water outlet pipeline flows through the heating device to be changed into hot water.

Through such setting, this water treatment facilities can provide cold water for the user and can provide hot water for the user again, has further satisfied user's different demands, has improved user's use experience.

It should be noted that the heating device and the cooling device may be disposed on the water outlet line in series. When cold water is needed to be prepared, the refrigerating device is controlled to work, and the heating device is not operated. When hot water is needed to be prepared, the heating device is controlled to work, and the refrigerating device does not work.

Drawings

Preferred embodiments of the present utility model are described below with reference to the accompanying drawings, in which:

FIG. 1 is a schematic diagram of a net heat integration machine according to a first embodiment of the present utility model;

FIG. 2 is a schematic diagram of a net heat integration machine according to a second embodiment of the present utility model;

FIG. 3 is a schematic diagram of a net heat integration machine according to a third embodiment of the present utility model;

FIG. 4 is a schematic diagram of a clean cooling and heating all-in-one machine according to an embodiment of the present utility model;

fig. 5 is a schematic structural diagram of a cooling and heating integrated machine according to another embodiment of the present utility model.

List of reference numerals:

11. a reverse osmosis filter element; 12. a front-mounted rear-mounted composite filter element; 21. a water inlet pipeline; 22. a water outlet pipeline; 23. a return line; 24. a waste water pipeline; 31. a water outlet nozzle; 32. a water tap; 4. a booster pump; 5. a heating device; 61. a three-way proportional control valve; 611. a first regulating valve; 612. a second regulating valve; 62. a water discharging electromagnetic valve; 63. a return solenoid valve; 64. a first one-way valve; 65. a second one-way valve; 66. a water inlet electromagnetic valve; 67. a waste water electromagnetic valve; 68. a three-way valve; 7. a high voltage switch; 8. an electric control board; 9. a refrigerating device.

Detailed Description

First, it should be understood by those skilled in the art that the embodiments described below are merely for explaining the technical principles of the present utility model, and are not intended to limit the scope of the present utility model.

It should be noted that in the description of the present utility model, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that in the description of the present utility model, unless explicitly stated and limited otherwise, the term "coupled" should be interpreted broadly, as for example, whether fixedly coupled, detachably coupled, or integrally coupled. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.

The utility model provides water treatment equipment based on the problem that a water purification module of the existing water purifier is easy to start and stop frequently, wherein the water treatment equipment comprises a reverse osmosis filter element, a water inlet pipeline, a water outlet pipeline, a return pipeline and a flow regulating valve; the downstream end of the water inlet pipeline is connected with the inlet of the reverse osmosis filter element, the upstream end of the water inlet pipeline is used for connecting a water source, and the water inlet pipeline is provided with a booster pump; the two ends of the water outlet pipeline are respectively connected with a pure water outlet of the reverse osmosis filter element and a water outlet of the water treatment equipment, and the water outlet pipeline is provided with a first on-off valve, a temperature regulating device and a high-pressure switch positioned at the upstream of the first on-off valve; the upstream end of the return pipeline is connected with the pure water outlet, and the downstream end of the return pipeline is connected with a pipe section of the water inlet pipeline, which is positioned at the upstream of the booster pump; the flow regulating valve is used for regulating the ratio of the pure water flowing to the water outlet pipeline from the pure water outlet to the pure water flowing to the return pipeline; the booster pump, the high-voltage switch, the temperature regulating device and the flow regulating valve are in communication connection with a controller of the water treatment equipment.

The utility model is described below in connection with fig. 1 to 3. FIG. 1 is a schematic diagram of a heat-purifying and integrating machine according to a first embodiment of the present utility model; FIG. 2 is a schematic diagram of a net heat integration machine according to a second embodiment of the present utility model; FIG. 3 is a schematic diagram of a net heat integration machine according to a third embodiment of the present utility model; FIG. 4 is a schematic diagram of a clean cooling and heating all-in-one machine according to an embodiment of the present utility model; fig. 5 is a schematic structural diagram of a cooling and heating integrated machine according to another embodiment of the present utility model.

In a first embodiment of the utility model, as shown in fig. 1, the net heat integration machine comprises a reverse osmosis filter element 11, a water inlet pipeline 21, a water outlet pipeline 22, a return pipeline 23 and a waste water pipeline 24. The upstream end of the water inlet line 21 is connected to a tap water pipe (not shown) as a water source, and the downstream end of the water inlet line 21 is connected to an inlet of the reverse osmosis cartridge 11. The water inlet pipeline 21 is sequentially connected with a front filter element part of the front and rear composite filter element 12, a water inlet electromagnetic valve 66 and a booster pump 4 in series along the direction from the upstream end to the downstream end. The pure water outlet of the reverse osmosis cartridge 11 is connected to the inlet of a three-way proportional control valve 61 as a flow rate control valve through a connection pipe. The upstream end of the water outlet line 22 is connected to one outlet of the three-way proportional control valve 61, and the downstream end of the water outlet line 22 is connected to the water outlet nozzle 31 of the net heat integration machine. The water outlet 31 is a water outlet provided with a control panel (not shown in the figure). The water outlet pipeline 22 is sequentially connected with a second one-way valve 65, a high-pressure switch 7, a rear filter element part of the front rear composite filter element 12, a water discharge electromagnetic valve 62 serving as a first on-off valve and a heating device 5 in series along the direction from the upstream end to the downstream end. The upstream end of the return line 23 is connected to the other outlet of the three-way proportional control valve 61, and the downstream end of the return line 23 is connected to a pipe section of the water intake line 21 between the water intake solenoid valve 66 and the booster pump 4. The return line 23 is connected in series with a first check valve 64 and a return solenoid valve 63 as a second on-off valve in the direction from the upstream end to the downstream end. The upstream end of the waste water line 24 is connected to the waste water outlet of the reverse osmosis cartridge 11, the downstream end of the waste water line 24 is connected to a kitchen drain pipe (not shown in the figure), and a waste water solenoid valve 67 is provided on the waste water line 24. The booster pump 4, the heating device 5, the three-way proportional control valve 61, the water discharging electromagnetic valve 62, the reflux electromagnetic valve 63, the water inlet electromagnetic valve 66, the waste water electromagnetic valve 67, the high-voltage switch 7 and the control panel are in communication connection with the electric control board 8 serving as a controller.

When in use, a user inputs water outlet temperature and a water making instruction through the control panel at the water outlet nozzle 31, the electric control board 8 controls the water inlet electromagnetic valve 66, the water outlet electromagnetic valve 62 and the reflux electromagnetic valve 63 to be opened according to the water making instruction of the user, and controls the three-way proportional regulating valve 61 to be at a corresponding opening according to the water outlet temperature input by the user, so that the flow of pure water flowing to the water outlet waterway 22 from the pure water outlet of the reverse osmosis filter element 11 is matched with the water outlet temperature input by the user. Because the water discharge electromagnetic valve 62 is opened, the inside of the pipe section of the water outlet pipeline 22 between the water discharge electromagnetic valve 62 and the second one-way valve 65 is communicated with the atmosphere through the water outlet nozzle 31, the water pressure in the pipe section of the position of the high-pressure switch 7 is reduced to a first set value, and the electric control board 8 controls the booster pump 4 to work at the moment. Tap water flows to the booster pump 4 after being filtered by a front filter element part of the front and rear composite filter element 12, water flowing through the booster pump 4 is pressurized and flows to the reverse osmosis filter element 11, pure water generated after being filtered by the reverse osmosis filter element 11 flows to the three-way proportional control valve 61 from a pure water outlet, pure water flowing out of one outlet of the three-way proportional control valve 61 flows to the water outlet pipeline 22, pure water flowing out of the other outlet of the three-way proportional control valve 61 flows to the return pipeline 23, pure water flowing into the water outlet pipeline 22 is heated into pure water with set temperature by the heating device 5 and flows out of the water outlet nozzle 31, pure water flowing into the return pipeline 23 flows back to a pipe section between the water inlet electromagnetic valve 66 and the booster pump 4 on the water inlet pipeline 21, and the pure water flows to the reverse osmosis filter element 11 after being pressurized together with tap water flowing into the tap water pipe by the booster pump 4. The waste water generated after the filtration by the reverse osmosis cartridge 11 flows from the waste water outlet to the waste water pipe 24 and flows to the kitchen drain pipe via the waste water pipe 24 when the waste water solenoid valve 67 is opened.

When the user receives water, a command for stopping water production is input through the control panel at the water outlet nozzle 31, the electric control board 8 controls the water discharging electromagnetic valve 62 to be closed, the water pressure in the pipe section where the high-pressure switch 7 is positioned is increased to a second set value, and at the moment, the electric control board 8 controls the booster pump 4 to stop working according to the water pressure, and controls the water inlet electromagnetic valve 66 and the backflow electromagnetic valve 63 to be closed.

Through the arrangement, when users need to prepare pure water with different temperatures, the net heat all-in-one machine can adjust the opening of the three-way proportional regulating valve 61 according to the water outlet temperature input by the users, so that the flow rate of the pure water flowing to the water outlet loop 22 is matched with the water outlet temperature set by the users, and the redundant pure water flowing out of the pure water outlet of the reverse osmosis filter element 11 flows back into the pipe section of the water inlet pipeline 21, which is positioned at the upstream of the booster pump 4, through the return pipeline 23, thereby ensuring that the flow rate of the water needed by the heating device 5 is the same as the flow rate of the pure water flowing to the heating device 5 under the condition of different water outlet temperatures, ensuring that the water pressure at the high-pressure switch 7 is basically kept unchanged in the water preparation process, and avoiding the frequent start-up condition of the booster pump 4 caused by frequent change of the water pressure at the water pressure switch 7.

The high-voltage switch 7 is arranged at the upstream of the heating device 5, so that the high-voltage switch 7 can be prevented from contacting a high-temperature environment, and the service life of the high-voltage switch 7 is prolonged.

The front filter element part of the front and rear composite filter element 12 is arranged on the water inlet pipeline 21, the rear filter element part of the front and rear composite filter element 12 is arranged on the water outlet pipeline 22, so that water can be filtered through the front filter element part of the front and rear composite filter element 12 before flowing to the reverse osmosis filter element 11 for filtering, pure water generated by the reverse osmosis filter element 11 is further filtered through the rear filter element part of the front and rear composite filter element 12 when flowing to the water outlet pipeline 22, the water purifying effect is improved, the consumption of the reverse osmosis filter element is reduced, the service life of the reverse osmosis filter element is prolonged, the use cost is reduced as a whole, the taste of water flowing out of the water outlet nozzle 31 is improved, and the use experience of a user is optimized.

In a second embodiment of the utility model, as shown in fig. 2, the net heat integration machine comprises a reverse osmosis filter element 11, a water inlet pipeline 21, a water outlet pipeline 22, a return pipeline 23 and a waste water pipeline 24. The upstream end of the water inlet line 21 is connected to a tap water pipe (not shown) as a water source, and the downstream end of the water inlet line 21 is connected to an inlet of the reverse osmosis cartridge 11. The water inlet pipeline 21 is sequentially connected with a front filter element part of the front and rear composite filter element 12, a water inlet electromagnetic valve 66 and a booster pump 4 in series along the direction from the upstream end to the downstream end. The upstream end of the water outlet pipeline 22 is connected to the pure water outlet of the reverse osmosis filter element 11, and the downstream end of the water outlet pipeline 22 is connected to the water outlet nozzle 31 of the heat purifying and integrating machine. The water outlet 31 is a water outlet provided with a control panel (not shown in the figure). The water outlet pipeline 22 is sequentially connected with a first regulating valve 611, a second one-way valve 65, a high-pressure switch 7, a rear filter element part of the front rear composite filter element 12, a water discharge electromagnetic valve 62 serving as a first on-off valve and a heating device 5 in series along the direction from the upstream end to the downstream end. The upstream end of the return line 23 is connected to the pure water outlet of the reverse osmosis cartridge 11, and the downstream end of the return line 23 is connected to a section of the water intake line 21 between the water intake solenoid valve 66 and the booster pump 4. The return line 23 is provided with a second regulator valve 612, a first check valve 64, and a return solenoid valve 63 as a second on-off valve in series in this order in the direction from the upstream end to the downstream end. The upstream end of the waste water line 24 is connected to the waste water outlet of the reverse osmosis cartridge 11, the downstream end of the waste water line 24 is connected to a kitchen drain pipe (not shown in the figure), and a waste water solenoid valve 67 is provided on the waste water line 24. The booster pump 4, the heating device 5, the first regulating valve 611, the second regulating valve 612, the water discharge solenoid valve 62, the return solenoid valve 63, the water inlet solenoid valve 66, the waste water solenoid valve 67, the high-voltage switch 7 and the control panel are in communication connection with the electric control board 8 as a controller. Wherein, the first regulating valve 611 is used for regulating the flow rate of pure water flowing from the pure water outlet of the reverse osmosis filter element 11 to the water outlet pipeline 22, the second regulating valve 612 is used for regulating the flow rate of pure water flowing from the pure water outlet of the reverse osmosis filter element 11 to the water return pipeline 23, and the first regulating valve 611 and the second regulating valve 612 are matched to regulate the ratio of pure water flowing to the water outlet pipeline 22 to pure water flowing to the water return pipeline 23.

In use, a user inputs a water outlet temperature and a water making command through a control panel at the water outlet nozzle 31, the electric control board 8 controls the water inlet electromagnetic valve 66, the water outlet electromagnetic valve 62 and the reflux electromagnetic valve 63 to be opened according to the water making command of the user, and controls the opening of the first regulating valve 611 and the opening of the second regulating valve 612 according to the water outlet temperature input by the user, so that the flow rate of pure water flowing to the water outlet waterway 22 from the pure water outlet of the reverse osmosis filter element 11 is matched with the water outlet temperature input by the user. Because the water discharge electromagnetic valve 62 is opened, the inside of the pipe section of the water outlet pipeline 22 between the water discharge electromagnetic valve 62 and the second one-way valve 65 is communicated with the atmosphere through the water outlet nozzle 31, the water pressure in the pipe section of the position of the high-pressure switch 7 is reduced to a first set value, and the electric control board 8 controls the booster pump 4 to work at the moment. Tap water flows to the booster pump 4 after being filtered by the front filter element part of the front and rear composite filter element 12, water flowing through the booster pump 4 is pressurized and flows to the reverse osmosis filter element 11, pure water generated after being filtered by the reverse osmosis filter element 11 flows out of the pure water outlet and flows to the water outlet pipeline 22, the other part flows to the return pipeline 23, the pure water flowing into the water outlet pipeline 22 is heated into pure water with set temperature by the heating device 5 and flows out of the water outlet nozzle 31, the pure water flowing into the return pipeline 23 flows back to a pipe section, which is positioned between the water inlet electromagnetic valve 66 and the booster pump 4, on the water inlet pipeline 21, and the part of pure water flows to the reverse osmosis filter element 11 after being pressurized by the booster pump 4 together with tap water flowing into the tap water pipe. The waste water generated after the filtration by the reverse osmosis cartridge 11 flows from the waste water outlet to the waste water pipe 24 and flows to the kitchen drain pipe via the waste water pipe 24 when the waste water solenoid valve 67 is opened.

Through the arrangement, the water pressure at the high-pressure switch is basically kept unchanged in the water making process, and the situation that the booster pump is started and stopped frequently due to frequent change of the water pressure at the water pressure switch is avoided. However, the number of parts is greater than that of the first embodiment.

In a third embodiment of the present utility model, as shown in fig. 3, the net heat integration machine includes a reverse osmosis cartridge 11, a water inlet line 21, a water outlet line 22, a return line 23, and a waste line 24. The upstream end of the water inlet line 21 is connected to a tap water pipe (not shown) as a water source, and the downstream end of the water inlet line 21 is connected to an inlet of the reverse osmosis cartridge 11. The water inlet pipeline 21 is sequentially connected with a front filter element part of the front and rear composite filter element 12, a water inlet electromagnetic valve 66 and a booster pump 4 in series along the direction from the upstream end to the downstream end. The pure water outlet of the reverse osmosis cartridge 11 is connected to the inlet of a three-way proportional control valve 61 as a flow rate control valve through a connection pipe. The upstream end of the water outlet line 22 is connected to one outlet of the three-way proportional control valve 61, and the downstream end of the water outlet line 22 is connected to the faucet 32 (integrating the first on-off valve and the water outlet) of the net heat integration machine. The water outlet pipeline 22 is sequentially connected with a second one-way valve 65, a high-pressure switch 7, a rear filter element part of the front rear composite filter element 12 and a heating device 5 in series along the direction from the upstream end to the downstream end. The upstream end of the return line 23 is connected to the other outlet of the three-way proportional control valve 61, and the downstream end of the return line 23 is connected to a pipe section of the water intake line 21 between the water intake solenoid valve 66 and the booster pump 4. The return line 23 is connected in series with a first check valve 64 and a return solenoid valve 63 as a second on-off valve in the direction from the upstream end to the downstream end. The upstream end of the waste water line 24 is connected to the waste water outlet of the reverse osmosis cartridge 11, the downstream end of the waste water line 24 is connected to a kitchen drain pipe (not shown in the figure), and a waste water solenoid valve 67 is provided on the waste water line 24. The booster pump 4, the heating device 5, the three-way proportional control valve 61, the reflux electromagnetic valve 63, the water inlet electromagnetic valve 66, the waste water electromagnetic valve 67 and the high-voltage switch 7 are in communication connection with the electric control board 8 serving as a controller. A control panel (not shown in the figure) in communication with the electronic control board 8 is provided on the body of the heat-purifying all-in-one machine.

In use, a user inputs the outlet water temperature through the control panel and opens the faucet 32 manually. The electric control board 8 controls the three-way proportional regulating valve 61 to be at a corresponding opening according to the water outlet temperature input by a user, so that the flow rate of pure water flowing to the water outlet channel 22 from the pure water outlet of the reverse osmosis filter element 11 is matched with the water outlet temperature input by the user. Because the water tap 32 is opened, the water pressure in the pipe section of the water outlet pipeline 22, which is positioned between the water tap 32 and the second one-way valve 65, is reduced to the first set value, and the electric control board 8 controls the booster pump 4 to work. Tap water flows to the booster pump 4 after being filtered by a front filter element part of the front and rear composite filter element 12, water flowing through the booster pump 4 is pressurized and flows to the reverse osmosis filter element 11, pure water generated after being filtered by the reverse osmosis filter element 11 flows to the three-way proportional control valve 61 from a pure water outlet, pure water flowing out of one outlet of the three-way proportional control valve 61 flows to the water outlet pipeline 22, pure water flowing out of the other outlet of the three-way proportional control valve 61 flows to the return pipeline 23, pure water flowing into the water outlet pipeline 22 is heated to be pure water with set temperature by the heating device 5 and flows out of the tap 32, pure water flowing into the return pipeline 23 flows back to a pipe section between the water inlet electromagnetic valve 66 and the booster pump 4 on the water inlet pipeline 21, and the pure water flowing into the part and tap water flowing into the tap water pipe are pressurized and flow to the reverse osmosis filter element 11. The waste water generated after the filtration by the reverse osmosis cartridge 11 flows from the waste water outlet to the waste water pipe 24 and flows to the kitchen drain pipe via the waste water pipe 24 when the waste water solenoid valve 67 is opened.

When the user receives water, the water tap 32 is manually turned off, the water pressure in the pipe section where the high-pressure switch 7 is positioned is increased to a second set value, and at the moment, the electric control board 8 controls the booster pump 4 to stop working according to the second set value, and controls the water inlet electromagnetic valve 66 and the backflow electromagnetic valve 63 to be closed.

In another embodiment of the present utility model, as shown in fig. 4, the net heat and cold integrated machine includes a reverse osmosis cartridge 11, a water inlet line 21, a water outlet line 22, a return line 23, and a waste line 24. The upstream end of the water inlet line 21 is connected to a tap water pipe (not shown) as a water source, and the downstream end of the water inlet line 21 is connected to an inlet of the reverse osmosis cartridge 11. The water inlet pipeline 21 is sequentially connected with a front filter element part of the front and rear composite filter element 12, a water inlet electromagnetic valve 66 and a booster pump 4 in series along the direction from the upstream end to the downstream end. The pure water outlet of the reverse osmosis cartridge 11 is connected to the inlet of a three-way proportional control valve 61 as a flow rate control valve through a connection pipe. The upstream end of the water outlet line 22 is connected to one outlet of the three-way proportional control valve 61, and the downstream end of the water outlet line 22 is connected to the water outlet nozzle 31 of the net heat integration machine. The water outlet 31 is a water outlet provided with a control panel (not shown in the figure). The main road of the water outlet pipeline 22 along the direction from the upstream end to the downstream end is sequentially connected with a second one-way valve 65, a high-voltage switch 7, a rear filter element part of the front rear composite filter element 12, a water discharging electromagnetic valve 62 serving as a first on-off valve and a three-way valve 68 in series, two three-way valves 68 are connected with a first branch and a second branch, the first branch and the second branch are respectively provided with a heating device 5 and a refrigerating device 9, and the outlet ends of the first branch and the second branch are connected to the water outlet nozzle 31. The upstream end of the return line 23 is connected to the other outlet of the three-way proportional control valve 61, and the downstream end of the return line 23 is connected to a pipe section of the water intake line 21 between the water intake solenoid valve 66 and the booster pump 4. The return line 23 is connected in series with a first check valve 64 and a return solenoid valve 63 as a second on-off valve in the direction from the upstream end to the downstream end. The upstream end of the waste water line 24 is connected to the waste water outlet of the reverse osmosis cartridge 11, the downstream end of the waste water line 24 is connected to a kitchen drain pipe (not shown in the figure), and a waste water solenoid valve 67 is provided on the waste water line 24. The booster pump 4, the heating device 5, the three-way proportional control valve 61, the water discharging electromagnetic valve 62, the reflux electromagnetic valve 63, the water inlet electromagnetic valve 66, the waste water electromagnetic valve 67, the high-voltage switch 7, the three-way valve 68 and the control panel are in communication connection with the electric control board 8 serving as a controller.

When a user inputs a water outlet temperature and a water heating command through a control panel at the water outlet nozzle 31, the electric control board 8 controls the water inlet electromagnetic valve 66, the water outlet electromagnetic valve 62 and the reflux electromagnetic valve 63 to be opened according to the water heating command of the user, and adjusts the state of the three-way valve 68, so that the water outlet electromagnetic valve 62 is in a communication state with the heating device 5, the water outlet electromagnetic valve 62 is in a disconnection state with the refrigerating device 9, the heating device 5 is controlled to work, and the three-way proportional control valve 61 is controlled to be in a corresponding opening according to the water outlet temperature input by the user, so that the flow of pure water flowing to the water outlet waterway 22 from the pure water outlet of the reverse osmosis filter element 11 is matched with the water outlet temperature input by the user. Because the water discharge electromagnetic valve 62 is opened, the inside of the pipe section of the water outlet pipeline 22 between the water discharge electromagnetic valve 62 and the second one-way valve 65 is communicated with the atmosphere through the water outlet nozzle 31, the water pressure in the pipe section of the position of the high-pressure switch 7 is reduced to a first set value, and the electric control board 8 controls the booster pump 4 to work at the moment. Tap water flows to the booster pump 4 after being filtered by a front filter element part of the front and rear composite filter element 12, water flowing through the booster pump 4 is pressurized and flows to the reverse osmosis filter element 11, pure water generated after being filtered by the reverse osmosis filter element 11 flows to the three-way proportional control valve 61 from a pure water outlet, pure water flowing out of one outlet of the three-way proportional control valve 61 flows to the water outlet pipeline 22, pure water flowing out of the other outlet of the three-way proportional control valve 61 flows to the return pipeline 23, pure water flowing into the water outlet pipeline 22 is heated into pure water with set temperature by the heating device 5 and flows out of the water outlet nozzle 31, pure water flowing into the return pipeline 23 flows back to a pipe section between the water inlet electromagnetic valve 66 and the booster pump 4 on the water inlet pipeline 21, and the pure water flows to the reverse osmosis filter element 11 after being pressurized together with tap water flowing into the tap water pipe by the booster pump 4. The waste water generated after the filtration by the reverse osmosis cartridge 11 flows from the waste water outlet to the waste water pipe 24 and flows to the kitchen drain pipe via the waste water pipe 24 when the waste water solenoid valve 67 is opened.

When a user inputs a water outlet temperature and a refrigerating water command through a control panel at the water outlet nozzle 31, the electric control board 8 controls the water inlet electromagnetic valve 66, the water outlet electromagnetic valve 62 and the reflux electromagnetic valve 63 to be opened according to the water making command of the user, and adjusts the state of the three-way valve 68, so that the water outlet electromagnetic valve 62 is in a communicating state with the refrigerating device 9, the water outlet electromagnetic valve 62 is in a disconnecting state with the heating device 5, the refrigerating device 9 is controlled to work, and the three-way proportional regulating valve 61 is controlled to be in a corresponding opening according to the water outlet temperature input by the user, so that the flow of pure water flowing to the water outlet waterway 22 from the pure water outlet of the reverse osmosis filter element 11 is matched with the water outlet temperature input by the user. Because the water discharge electromagnetic valve 62 is opened, the inside of the pipe section of the water outlet pipeline 22 between the water discharge electromagnetic valve 62 and the second one-way valve 65 is communicated with the atmosphere through the water outlet nozzle 31, the water pressure in the pipe section of the position of the high-pressure switch 7 is reduced to a first set value, and the electric control board 8 controls the booster pump 4 to work at the moment. Tap water flows to the booster pump 4 after being filtered by a front filter element part of the front and rear composite filter element 12, water flowing through the booster pump 4 is pressurized and flows to the reverse osmosis filter element 11, pure water generated after being filtered by the reverse osmosis filter element 11 flows to the three-way proportional control valve 61 from a pure water outlet, pure water flowing out of one outlet of the three-way proportional control valve 61 flows to the water outlet pipeline 22, pure water flowing out of the other outlet of the three-way proportional control valve 61 flows to the return pipeline 23, pure water flowing into the water outlet pipeline 22 is cooled to be pure water with set temperature through the refrigerating device 9 and flows out of the water outlet nozzle 31, pure water flowing into the return pipeline 23 flows back to a pipe section between the water inlet electromagnetic valve 66 and the booster pump 4 on the water inlet pipeline 21, and the pure water flows to the reverse osmosis filter element 11 after being pressurized together with tap water flowing into the tap water pipe by the booster pump 4. The waste water generated after the filtration by the reverse osmosis cartridge 11 flows from the waste water outlet to the waste water pipe 24 and flows to the kitchen drain pipe via the waste water pipe 24 when the waste water solenoid valve 67 is opened.

Through such setting, can enough provide cold water for the user and can provide hot water for the user again, further satisfied user's different demands, improved user's use experience.

In another embodiment of the present utility model, as shown in fig. 5, the net heat and cold integrated machine includes a reverse osmosis cartridge 11, a water inlet line 21, a water outlet line 22, a return line 23, and a waste line 24. The upstream end of the water inlet line 21 is connected to a tap water pipe (not shown) as a water source, and the downstream end of the water inlet line 21 is connected to an inlet of the reverse osmosis cartridge 11. The water inlet pipeline 21 is sequentially connected with a front filter element part of the front and rear composite filter element 12, a water inlet electromagnetic valve 66 and a booster pump 4 in series along the direction from the upstream end to the downstream end. The pure water outlet of the reverse osmosis cartridge 11 is connected to the inlet of a three-way proportional control valve 61 as a flow rate control valve through a connection pipe. The upstream end of the water outlet line 22 is connected to one outlet of the three-way proportional control valve 61, and the downstream end of the water outlet line 22 is connected to the water outlet nozzle 31 of the net heat integration machine. The water outlet 31 is a water outlet provided with a control panel (not shown in the figure). The main path of the water outlet pipeline 22 along the direction from the upstream end to the downstream end is sequentially connected with a second one-way valve 65, a high-pressure switch 7, a rear filter element part of the front rear composite filter element 12, a water discharging electromagnetic valve 62 serving as a first on-off valve, a heating device 5 and a refrigerating device 9 in series. The upstream end of the return line 23 is connected to the other outlet of the three-way proportional control valve 61, and the downstream end of the return line 23 is connected to a pipe section of the water intake line 21 between the water intake solenoid valve 66 and the booster pump 4. The return line 23 is connected in series with a first check valve 64 and a return solenoid valve 63 as a second on-off valve in the direction from the upstream end to the downstream end. The upstream end of the waste water line 24 is connected to the waste water outlet of the reverse osmosis cartridge 11, the downstream end of the waste water line 24 is connected to a kitchen drain pipe (not shown in the figure), and a waste water solenoid valve 67 is provided on the waste water line 24. The booster pump 4, the heating device 5, the three-way proportional control valve 61, the water discharging electromagnetic valve 62, the reflux electromagnetic valve 63, the water inlet electromagnetic valve 66, the waste water electromagnetic valve 67, the high-voltage switch 7, the three-way valve 68 and the control panel are in communication connection with the electric control board 8 serving as a controller.

When a user inputs a water outlet temperature and a water heating command through a control panel at the water outlet nozzle 31, the electric control board 8 controls the water inlet electromagnetic valve 66, the water outlet electromagnetic valve 62 and the reflux electromagnetic valve 63 to be opened according to the water heating command of the user, controls the heating device 5 to work, and controls the three-way proportional regulating valve 61 to be at a corresponding opening according to the water outlet temperature input by the user, so that the flow of pure water flowing to the water outlet waterway 22 from the pure water outlet of the reverse osmosis filter element 11 is matched with the water outlet temperature input by the user. Because the water discharge electromagnetic valve 62 is opened, the inside of the pipe section of the water outlet pipeline 22 between the water discharge electromagnetic valve 62 and the second one-way valve 65 is communicated with the atmosphere through the water outlet nozzle 31, the water pressure in the pipe section of the position of the high-pressure switch 7 is reduced to a first set value, and the electric control board 8 controls the booster pump 4 to work at the moment. Tap water flows to the booster pump 4 after being filtered by a front filter element part of the front and rear composite filter element 12, water flowing through the booster pump 4 is pressurized and flows to the reverse osmosis filter element 11, pure water generated after being filtered by the reverse osmosis filter element 11 flows to the three-way proportional control valve 61 from a pure water outlet, pure water flowing out of one outlet of the three-way proportional control valve 61 flows to the water outlet pipeline 22, pure water flowing out of the other outlet of the three-way proportional control valve 61 flows to the return pipeline 23, pure water flowing into the water outlet pipeline 22 is heated into pure water with set temperature by the heating device 5 and flows out of the water outlet nozzle 31, pure water flowing into the return pipeline 23 flows back to a pipe section between the water inlet electromagnetic valve 66 and the booster pump 4 on the water inlet pipeline 21, and the pure water flows to the reverse osmosis filter element 11 after being pressurized together with tap water flowing into the tap water pipe by the booster pump 4. The waste water generated after the filtration by the reverse osmosis cartridge 11 flows from the waste water outlet to the waste water pipe 24 and flows to the kitchen drain pipe via the waste water pipe 24 when the waste water solenoid valve 67 is opened.

When a user inputs a water outlet temperature and a refrigerating water command through a control panel at the water outlet nozzle 31, the electric control board 8 controls the water inlet electromagnetic valve 66, the water outlet electromagnetic valve 62 and the reflux electromagnetic valve 63 to be opened according to the water making command of the user, controls the refrigerating device 9 to work, and controls the three-way proportional regulating valve 61 to be at a corresponding opening according to the water outlet temperature input by the user, so that the flow of pure water flowing to the water outlet waterway 22 from the pure water outlet of the reverse osmosis filter element 11 is matched with the water outlet temperature input by the user. Because the water discharge electromagnetic valve 62 is opened, the inside of the pipe section of the water outlet pipeline 22 between the water discharge electromagnetic valve 62 and the second one-way valve 65 is communicated with the atmosphere through the water outlet nozzle 31, the water pressure in the pipe section of the position of the high-pressure switch 7 is reduced to a first set value, and the electric control board 8 controls the booster pump 4 to work at the moment. Tap water flows to the booster pump 4 after being filtered by a front filter element part of the front and rear composite filter element 12, water flowing through the booster pump 4 is pressurized and flows to the reverse osmosis filter element 11, pure water generated after being filtered by the reverse osmosis filter element 11 flows to the three-way proportional control valve 61 from a pure water outlet, pure water flowing out of one outlet of the three-way proportional control valve 61 flows to the water outlet pipeline 22, pure water flowing out of the other outlet of the three-way proportional control valve 61 flows to the return pipeline 23, pure water flowing into the water outlet pipeline 22 is cooled to be pure water with set temperature through the refrigerating device 9 and flows out of the water outlet nozzle 31, pure water flowing into the return pipeline 23 flows back to a pipe section between the water inlet electromagnetic valve 66 and the booster pump 4 on the water inlet pipeline 21, and the pure water flows to the reverse osmosis filter element 11 after being pressurized together with tap water flowing into the tap water pipe by the booster pump 4. The waste water generated after the filtration by the reverse osmosis cartridge 11 flows from the waste water outlet to the waste water pipe 24 and flows to the kitchen drain pipe via the waste water pipe 24 when the waste water solenoid valve 67 is opened.

It should be noted that, the tap water pipe is only one specific arrangement mode, and can be adjusted in practical application, for example, the tap water pipe can be a water storage tank. In addition, the pre-filter element portion and the post-filter element portion are arranged together to form the pre-post composite filter element 12, which is also a specific arrangement, and may be adjusted in practical applications, for example, the pre-filter element portion and the post-filter element portion may be arranged as separate pre-filter elements and post-filter elements. In other possible embodiments, unlike the various embodiments described above, only one of the pre-filter cartridge and the post-filter cartridge is provided, except that the water purifying effect is not as good as in the various embodiments described above. In other possible embodiments, unlike the various embodiments described above, no pre-filter and post-filter are provided, except that the water purification effect is not as good as in the various embodiments described above. In addition, the high-voltage switch 7 is disposed upstream of the heating device 5, which is only a preferable arrangement, and may be adjusted in practical applications, for example, the high-voltage switch 7 is disposed downstream of the heating device 5, but is required to be disposed upstream of the drain solenoid valve 62 or the faucet 32.

It should also be noted that the water inlet solenoid valve 66 may also be disposed upstream of the pre-cartridge of the pre-post-cartridge 12. In addition, the electronic control board 8 is also a specific setting mode as a controller, and can be adjusted in practical application, for example, the controller can be a single chip microcomputer or other suitable controllers.

In other possible embodiments, one or more of the first check valve 64, the second check valve 65, the return solenoid valve 63, and the water inlet solenoid valve 66 in the above embodiments may not be provided. In other possible embodiments, the water outlet line 23 is provided with a refrigerating device 9 and no heating device 5, unlike the embodiments described above.

Thus far, the technical solution of the present utility model has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present utility model is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present utility model, and such modifications and substitutions will fall within the scope of the present utility model.

Claims

1. The water treatment equipment is characterized by comprising a reverse osmosis filter element, a water inlet pipeline, a water outlet pipeline, a return pipeline and a flow regulating valve;

the downstream end of the water inlet pipeline is connected with the inlet of the reverse osmosis filter element, the upstream end of the water inlet pipeline is used for being connected with a water source, and the water inlet pipeline is provided with a booster pump;

the two ends of the water outlet pipeline are respectively connected with a pure water outlet of the reverse osmosis filter element and a water outlet of the water treatment equipment, and the water outlet pipeline is provided with a first on-off valve, a temperature regulating device and a high-pressure switch positioned at the upstream of the first on-off valve;

the upstream end of the return pipeline is connected with the pure water outlet, and the downstream end of the return pipeline is connected with a pipe section of the water inlet pipeline, which is positioned at the upstream of the booster pump;

the flow regulating valve is used for regulating the ratio of the pure water flowing to the water outlet pipeline from the pure water flowing to the return pipeline;

the booster pump, the high-voltage switch, the temperature regulating device and the flow regulating valve are in communication connection with a controller of the water treatment equipment.

2. The water treatment apparatus according to claim 1, wherein the flow rate regulating valve is a three-way proportional regulating valve, an inlet of the three-way proportional regulating valve is connected to the pure water outlet, and two outlets of the three-way proportional regulating valve are connected to an upstream end of the water outlet pipe and an upstream end of the return pipe, respectively.

3. The water treatment apparatus of claim 2, wherein a second on-off valve is further provided on the return line, the second on-off valve being in communication with the controller.

4. A water treatment apparatus according to claim 2, wherein the return line is further provided with a first one-way valve leading from an upstream end to a downstream end of the return line.

5. A water treatment apparatus according to claim 2, wherein a second check valve is further provided on a pipe section of the water outlet pipe upstream of the high-pressure switch and the temperature adjusting means, the second check valve being communicated from an upstream end to a downstream end of the water outlet pipe.

6. A water treatment apparatus according to claim 1, wherein the flow regulating valve comprises a first regulating valve provided on a pipe section of the water outlet line upstream of the high pressure switch and the temperature regulating device and a second regulating valve provided on the return line.

7. A water treatment apparatus according to claim 1, wherein the high voltage switch is located upstream of the temperature regulating means.

8. The water treatment apparatus according to claim 1, wherein a pre-filter is further provided on a pipe section of the water inlet pipe upstream of the booster pump.

9. The water treatment apparatus of claim 8, wherein a third on-off valve is provided between the pre-filter and the booster pump.

10. A water treatment apparatus according to claim 1, wherein a post-filter element is further provided on a pipe section of the water outlet pipe upstream of the temperature regulating device.

11. The water treatment apparatus of claim 10, wherein the high pressure switch is disposed upstream of the post-cartridge and the first on-off valve is disposed downstream of the post-cartridge.

12. A water treatment apparatus according to any one of claims 1 to 11, wherein the temperature regulating means comprises heating means.

13. A water treatment apparatus according to any one of claims 1 to 11, wherein the temperature regulating means comprises refrigeration means.

14. A water treatment apparatus according to any one of claims 1 to 11, wherein the temperature regulating means comprises heating means and cooling means.

15. A water treatment apparatus according to any one of claims 1 to 11, comprising a waste water line, the upstream end of which is connected to the waste water outlet of the reverse osmosis cartridge and the downstream end of which is connected to the outside.