CN220684743U

CN220684743U - Water purifying device

Info

Publication number: CN220684743U
Application number: CN202322363740.9U
Authority: CN
Inventors: 慕凡; 李俊超; 魏礼松
Original assignee: AO Smith China Water Heater Co Ltd; AO Smith China Environmental Products Co Ltd
Current assignee: AO Smith China Water Heater Co Ltd; AO Smith China Environmental Products Co Ltd
Priority date: 2023-08-31
Filing date: 2023-08-31
Publication date: 2024-03-29
Anticipated expiration: 2033-08-31

Abstract

The present utility model is a water purifying apparatus comprising: a water outlet line for supplying water to the user terminal; a hot water supply device for supplying hot water to at least the water outlet pipeline; the inlet of the drainage pipeline is connected with the water outlet pipeline, and the inlet of the drainage pipeline is positioned at the end part of the water outlet pipeline or is arranged close to the end part of the water outlet pipeline; the first valve part is arranged at the connection position of the drainage pipeline and the water outlet pipeline or is arranged on the drainage pipeline; the first valve member has at least an off state so that the supplied hot water can be kept in the water outlet pipeline for a first preset time. The utility model can effectively reduce the amount of hot water needed by sterilizing the water outlet pipeline while meeting the requirement of sterilizing the water outlet pipeline of the water purifying device, improve the sterilization efficiency, prolong the sterilization time, ensure the water safety of the water purifying device and improve the use experience of users.

Description

Water purifying device

Technical Field

The utility model relates to the field of water purification, in particular to a water purifying device.

Background

At present, a water purifying device for public places (such as schools) adopts a heat exchanger to exchange heat to prepare medium-temperature water for users to drink, and the problem that bacteria are easy to breed due to longer water outlet pipelines can exist. If the sterilization is carried out by adopting the way of hot water overflow in the water outlet pipeline, a certain sterilization time and hot water quantity are needed to achieve the sterilization effect, the sterilization efficiency is lower, the problem of excessive discharge of hot water for sterilization can be generated, water resources are wasted, and the cost is increased.

Aiming at solving the problems of low sterilization efficiency and large hot water waste in the water outlet pipeline of the water purifying device in the related art, no effective solution is provided at present.

Therefore, the inventor proposes a water purifying device by virtue of experience and practice of related industries for many years so as to overcome the defects of the prior art.

Disclosure of Invention

The utility model aims to provide a water purifying device, which can effectively reduce the amount of hot water required for sterilizing an outlet pipeline of the water purifying device while meeting the requirement of sterilizing the outlet pipeline of the water purifying device, improve the sterilizing efficiency, prolong the sterilizing time, ensure the water safety of the water purifying device and improve the use experience of users.

The object of the utility model can be achieved by the following scheme:

the present utility model provides a water purifying apparatus, comprising:

a water outlet line for supplying water to the user terminal;

a hot water supply device for supplying hot water to at least the water outlet pipe;

the inlet of the drainage pipeline is connected with the water outlet pipeline, and the inlet of the drainage pipeline is positioned at the end part of the water outlet pipeline or is arranged close to the end part of the water outlet pipeline;

the first valve part is arranged at the connection position of the drainage pipeline and the water outlet pipeline or is arranged on the drainage pipeline;

the first valve member has at least an off state so that the supplied hot water can remain in the water outlet pipeline for a first preset time.

In a preferred embodiment of the present utility model, the first valve element further has an on state to allow the hot water to continuously flow through the water outlet line for a second preset time before the first valve element is turned off, and/or to allow the hot water to continuously flow through the water outlet line for a third preset time after the first valve element is turned off.

In a preferred embodiment of the present utility model, the first valve member is a two-inlet/two-outlet valve, the inlet of the first valve member is connected to the water outlet pipe, and the first outlet and the second outlet of the first valve member are respectively connected to the inlet of the water discharge pipe and the water supply port at the end of the user.

In a preferred embodiment of the present utility model, the first valve element is a check valve or an on-off valve.

In a preferred embodiment of the present utility model, the water purifying device further includes a water outlet mechanism, and the water outlet mechanism is disposed at a connection position between the water draining pipeline and the water outlet pipeline;

the water outlet mechanism comprises a water outlet nozzle and a control valve, the water outlet nozzle is provided with a water inlet, a water outlet and a water supply port for supplying water to the tail end of a user, a first flow path and a second flow path which is arranged on the periphery of the first flow path in a surrounding mode are formed in the water outlet nozzle, the first flow path is connected with the second flow path in an on-off mode, the second flow path is respectively connected with the water inlet and the water outlet of the water outlet nozzle, the first flow path is connected with the water supply port of the water outlet nozzle, the second flow path is respectively connected with the water outlet pipeline and the water discharge pipeline through the water inlet and the water outlet port of the water outlet nozzle, the control valve is arranged between the first flow path and the second flow path, and the control valve is used for controlling the on-off of the first flow path and the second flow path.

In a preferred embodiment of the present utility model, the water outlet nozzle is a coaxial sleeve type water outlet nozzle.

In a preferred embodiment of the present utility model, the water purifying device further includes a second valve member, where the second valve member is disposed upstream of the water outlet pipeline or at an inlet of the water outlet pipeline;

the first valve element and the second valve element are matched to turn off or turn on the water outlet pipeline.

In a preferred embodiment of the present utility model, the water purifying device further comprises a heat exchanging device, the heat exchanging device has a first flow channel, and a first inlet and a first outlet which are communicated with the first flow channel, the first outlet is connected with the inlet of the water outlet pipeline, or at least part of the first flow channel is a part of the water outlet pipeline.

In a preferred embodiment of the present utility model, the water purifying device further includes a water inlet pipeline, the water inlet pipeline is connected to the water inlet of the hot water supply device, and the water outlet of the hot water supply device is connected to the first inlet;

the second valve member is positioned on the water inlet pipeline, the first inlet or the first flow passage.

In a preferred embodiment of the present utility model, the heat exchange device further has a second flow passage, and a second inlet and a second outlet communicating with the second flow passage, the second inlet being connected to the water inlet pipe, the second outlet being connected to the water inlet pipe or the water inlet of the hot water supply device, the water flowing through the second flow passage being used for exchanging heat with the hot water flowing through the first flow passage to form medium-temperature water in the first flow passage.

In a preferred embodiment of the present utility model, the heat exchange device further has a second flow passage, and a second inlet and a second outlet which are communicated with the second flow passage, the second inlet is connected with the water inlet pipe, the second outlet is connected with the water inlet of the water inlet pipe or the hot water supply device, and the water flowing through the second flow passage is used for exchanging heat with the hot water flowing through the first flow passage so as to form middle-temperature water at least capable of being used for cooling and flushing the water outlet pipe for a fourth preset time in the first flow passage.

In a preferred embodiment of the present utility model, a third valve member is disposed on the water inlet pipe and downstream of the second valve member, the third valve member has at least a first port, a second port and a third port, the first port and the second port are respectively connected to the water inlet pipe, and along the water flow direction in the water inlet pipe, the second port is downstream of the first port, the third port is connected to the second inlet, and the opening degrees of the second port and the third port are adjustable to adjust the water inflow of the first flow channel and the second flow channel.

In a preferred embodiment of the present utility model, the third valve element is a proportional valve capable of adjusting the opening of the valve port.

In a preferred embodiment of the present utility model, the hot water supply device includes a heat tank, the heat exchange device includes a heat exchange tube, the heat exchange tube is disposed on an outer wall of the heat tank, and the heat exchange tube has a sleeve structure, so that the second flow channel is formed on an outer periphery of the first flow channel along a circumferential direction of the first flow channel.

In a preferred embodiment of the present utility model, the water purifying device further includes a water purifying unit, and the water purifying unit is connected to the inlet of the water inlet pipeline, or the water purifying unit is disposed on the water inlet pipeline.

In a preferred embodiment of the present utility model, the water purifying unit includes a membrane element.

From the above, the water purifying device of the utility model has the characteristics and advantages that: the utility model can effectively reduce the hot water amount required by sterilizing the water outlet pipeline and improve the sterilizing efficiency while meeting the sterilizing requirement of the water outlet pipeline, and can prolong the sterilizing time compared with the overcurrent type sterilizing, ensure the water safety of the water purifying device and improve the use experience of users.

Drawings

The following drawings are only for purposes of illustration and explanation of the present utility model and are not intended to limit the scope of the utility model. Wherein:

fig. 1: is one of the structural schematic diagrams of the water purifying device.

Fig. 2: the second schematic diagram of the water purifying device is shown in the structure of the utility model.

Fig. 3: the third schematic diagram of the water purifying device is shown in the structure of the utility model.

Fig. 4: the structure of the hot water supply device and the heat exchange device of the water purifying device is schematically shown.

Fig. 5: the structure of the water outlet mechanism in the water purifying device is schematically shown.

Fig. 6: the flow direction of the liquid in the overcurrent sterilization state in the water purifying device is schematically shown.

Fig. 7: the flow direction of the liquid in the heat preservation and sterilization state in the water purifying device is schematically shown.

Fig. 8: the flow direction of the liquid in the cooling and flushing state in the water purifying device is schematically shown.

The reference numerals in the utility model are:

1. a water outlet pipeline; 2. A hot water supply device;

3. a first valve member; 4. A second valve member;

5. a heat exchange device; 501. A first flow passage;

5011. a first inlet; 5012. A first outlet;

502. a second flow passage; 5021. A second inlet;

5022. a second outlet; 6. A water inlet pipeline;

7. a third valve member; 701. A first port;

702. a second port; 703. A third port;

8. a water purifying unit; 9. A drainage pipeline;

10. a water outlet mechanism; 1001. A water outlet nozzle;

10011. a first flow path; 10012, a second flow path;

10013. a water inlet; 10014, water outlet;

10015. a water supply port; 1002. A control valve;

11. a tee element.

Detailed Description

For a clearer understanding of technical features, objects, and effects of the present utility model, a specific embodiment of the present utility model will be described with reference to the accompanying drawings.

As shown in fig. 1 to 3 and 7, the present utility model provides a water purifying apparatus comprising a water outlet pipe 1 for supplying water to a user's end, a hot water supply device 2 for supplying at least hot water to the water outlet pipe 1, a water discharge pipe 9, and a first valve member 3, an inlet of the water discharge pipe 9 being connected to the water outlet pipe 1, an inlet of the water discharge pipe 9 being located at an end of the water outlet pipe 1 or an inlet of the water discharge pipe 9 being located near an end of the water outlet pipe 1, an inlet of the water discharge pipe 9 being connected to an end of the water outlet pipe 1 when an inlet of the water discharge pipe 9 is located at an end of the water outlet pipe 1; when the inlet of the water discharge pipeline 9 is arranged near the end part of the water discharge pipeline 1, the inlet of the water discharge pipeline 9 is connected with the end part near the water discharge pipeline 1; the first valve element 3 is arranged at the connection position of the drainage pipeline 9 and the water outlet pipeline 1 or the first valve element 3 is arranged on the drainage pipeline 9; the first valve element 3 has at least an off state, and through the first valve element 3 and the position where the first valve element 3 is arranged, the water flow in the water outlet pipeline 1 can be turned off from being discharged, so that the supplied hot water can be kept in the water outlet pipeline 1 for a first preset time.

In the utility model, the inlet of the water discharge pipeline 9 is connected with the water outlet pipeline 1 for supplying water to the tail end of a user, the first valve element 3 is arranged at the connection position of the water discharge pipeline 9 and the water outlet pipeline 1 or the water discharge pipeline 9, and as the first valve element 3 is at least in a cut-off state, when the water outlet pipeline 1 needs to be sterilized, the water outlet pipeline 1 and at least part of the water discharge pipeline 9 can be disconnected by controlling the first valve element 3, so that the hot water supplied to the water outlet pipeline 1 by the hot water supply device 2 can be reserved in the water outlet pipeline 1, the aim of heat preservation and sterilization of the water outlet pipeline 1 can be achieved, and the sterilization of the water outlet pipeline 1 is realized without continuously outputting hot water.

The first preset time can be set according to the actual sterilization condition of the water outlet pipeline 1 (for example, the first preset time can be set to 3 min), and the utility model does not limit the first preset time and can achieve the preset sterilization effect.

It should be noted that, in the case of normal water supply to the user, the water purifying device of the present utility model can supply medium-temperature water by the hot water supply device 2 so that the user can drink directly; of course, when the water outlet pipe 1 needs to be sterilized, the hot water supply device 2 supplies hot water to the water outlet pipe 1 to achieve the sterilization purpose.

Further, as shown in fig. 6, the first valve element 3 further has a conducting state, and when the first valve element 3 is in the conducting state, at least the hot water supplied by the hot water supply device 2 can continuously flow through the water outlet pipeline 1, so as to realize the over-flow sterilization of the water outlet pipeline 1. Specifically, before the first valve element 3 is in the off state, the first valve element 3 may be set to be in the on state for a second preset time, so that hot water may continuously flow through the water outlet pipeline 1 for the second preset time before the first valve element 3 is turned off; or after the first valve element 3 is in the off state, setting the first valve element 3 to be in the on state for a third preset time so that the hot water can continuously flow through the water outlet pipeline for the third preset time after the first valve element 3 is turned off; or before and after the first valve element 3 is in the off state, the second preset time and the third preset time for the first valve element 3 to be in the on state are respectively set, so that the heating-heat preservation-heating process of the water outlet pipeline 1 is realized, the effective sterilization time of hot water can be increased by the step sterilization mode, meanwhile, the waste of the hot water is avoided, and the sterilization efficiency is improved.

The second preset time and the third preset time can be set according to the actual sterilization condition of the water outlet pipeline 1 by hot water (for example, the second preset time can be set to be 2min and the third preset time can be set to be 1 min).

In an alternative embodiment of the present utility model, as shown in fig. 1, the first valve member 3 is disposed at a connection position between the drain pipe 9 and the water outlet pipe 1, the first valve member 3 may be a two-in/two-out valve, the first valve member 3 has an inlet, a first outlet and a second outlet, the inlet of the first valve member 3 is connected to the water outlet pipe 1, the first outlet of the first valve member 3 is connected to the drain pipe 9, and the second outlet of the first valve member 3 is connected to a water supply port at the end of a user.

In another alternative embodiment of the present utility model, as shown in fig. 2 to 5, the first valve element 3 is provided on the drain line 9, and the first valve element 3 may be a check valve or an on-off valve.

Further, as shown in fig. 2 and 3, the first valve element 3 is a one-way valve or an on-off valve, and the water purifying device further includes a water outlet mechanism 10, where the water outlet mechanism 10 is disposed at a connection position between the water drain pipeline 9 and the water outlet pipeline 1. In this embodiment, as shown in fig. 3 and 5, the water outlet mechanism 10 includes a water outlet nozzle 1001 and a control valve 1002, the water outlet nozzle 1001 has a water inlet 10013, a water outlet 10014 and a water supply port 10015 for supplying water to the user terminal, a first flow path 10011 and a second flow path 10012 surrounding the first flow path 10011 are formed inside the water outlet nozzle 1001, the first flow path 10011 is connected to the second flow path 10012 in a on-off manner, the second flow path 10012 is connected to the water inlet 10013 and the water outlet 10014 of the water outlet nozzle 1001, the first flow path 10011 is connected to the water supply port 10015 of the water outlet nozzle 1001, the second flow path 10012 is connected to the water outlet pipeline 1 through the water outlet 10013 of the water outlet nozzle 1001, the control valve 1002 is disposed between the first flow path 10011 and the second flow path 10012, and the control valve 1002 is used for controlling on-off of the first flow path 10011 and the second flow path 10012.

Specifically, the water outlet 1001 is a coaxial sleeve type water outlet. As shown in fig. 5, a vertical channel extending from the top to the bottom of the coaxial sleeve type water tap is a first channel 10011, an annular channel which is annularly arranged on the periphery of the first channel 10011 and extends from the top of the first channel 10011 to the bottom of the first channel 10011 in the vertical direction is a second channel 10012, a water inlet 10013 and/or a water outlet 10014 of the water tap 1001 are/is positioned in the middle or upper part of the second channel 10012, a water supply port 10015 of the water tap 1001 is positioned at the bottom of the first channel 10011, a control valve 1002 is positioned at the top of the first channel 10011, and when the control valve 1002 is closed, water flows into the second channel 10012 from the water inlet 10013 of the water tap 1001 and flows out from the water outlet 10014 of the water tap 1001; when the control valve 1002 is turned on, the second flow path 10012 communicates with the first flow path 10011, and the water flowing into the second flow path 10012 from the water inlet 10013 of the water outlet 1001 flows into the first flow path 10011 and is supplied from the water supply port 10015 of the water outlet 1001 because the pressure at the water outlet 10014 of the water outlet 1001 is greater than the pressure at the water supply port 10015 of the water outlet 1001.

In an alternative embodiment of the utility model, as shown in fig. 1 to 3, the water purification device further comprises a second valve element 4, the second valve element 4 being arranged upstream of the water outlet line 1 or at the inlet of the water outlet line 1. The on-off state of the upstream of the water outlet pipeline 1 or the inlet of the water outlet pipeline 1 can be controlled through the second valve element 4, so that water supply to the water outlet pipeline 1 is turned on and off, the on-off state of the downstream of the water outlet pipeline 1 or the outlet of the water outlet pipeline 1 is controlled through the first valve element 3, and therefore the water outlet pipeline 1 is turned on and off through the cooperation of the first valve element 3 and the second valve element 4, hot water can be reserved or overflowed in the water outlet pipeline 1, and the purposes of heat preservation sterilization or overcurrent sterilization are achieved. In addition, the second valve element 4 can release the pressure in the water outlet pipeline 1, so that the safety of the water purifying device is improved. When the first valve element 3 fails, the water source can be turned off in time through the second valve element 4, the continuous release of hot water is blocked, and the continuous start of the machine caused by the fact that the stored water in the water purifying device is discharged is prevented.

In an alternative embodiment of the present utility model, as shown in fig. 1 to 3, the water purifying apparatus further comprises a heat exchanging apparatus 5, wherein the heat exchanging apparatus 5 has a first flow channel 501 and a first inlet 5011 and a first outlet 5012 which are communicated with the first flow channel 501, the first outlet 5012 is connected with an inlet of the water outlet pipe 1, and hot water supplied from the hot water supplying apparatus 2 can flow through the first flow channel 501 and the water outlet pipe 1 in sequence, thereby achieving the purpose of sterilizing the first flow channel 501 and the water outlet pipe 1. The water outlet pipeline 1 may be a single pipeline independent of the first flow channel 501, and at least part of the first flow channel 501 may be regarded as a part of the water outlet pipeline 1, and the range of the specific water outlet pipeline 1 may be determined according to the range of sterilizing the pipeline in actual need.

Further, as shown in fig. 1 to 4, the water purifying device further includes a water inlet pipeline 6, the water inlet pipeline 6 is connected with the water inlet of the hot water supply device 2, the water outlet of the hot water supply device 2 is connected with the first inlet 5011, water is supplied into the hot water supply device 2 through the water inlet pipeline 6, and hot water or medium-temperature water generated by the hot water supply device 2 is delivered into the water outlet pipeline 1 through the first flow channel 501, so as to achieve the purpose of sterilization or drinking for users. The second valve element 4 may be disposed on the water inlet pipe 6, and of course, the second valve element 4 may also be disposed at the first inlet 5011 of the first flow path 501 or on the first flow path 501.

Further, as shown in fig. 1 to 4, the heat exchange device 5 further has a second flow channel 502, and a second inlet 5021 and a second outlet 5022 which are communicated with the second flow channel 502, wherein the second inlet 5021 is connected with the water inlet pipeline 6, and the water flowing through the second flow channel 502 is used for exchanging heat with the hot water flowing through the first flow channel 501 to form medium-temperature water in the first flow channel 501 and is discharged through the water outlet pipeline 1, and the medium-temperature water can be drunk by a user and can also be used for cooling and flushing after sterilizing the water outlet pipeline 1. The second outlet 5022 is connected with the water inlet of the water inlet pipeline 6 or the hot water supply device 2, the water after heat exchange in the second flow channel 502 flows into the hot water supply device 2, is heated by the hot water supply device 2 and then is conveyed to the water outlet pipeline 1, and the part of water is not cold water but middle-temperature water after heat exchange, so that the energy consumption of the hot water supply device 2 is reduced, the heating efficiency is improved, and meanwhile, the waste of the heat exchange water in the second flow channel 502 can be avoided.

Specifically, as shown in fig. 2, a three-way element 11 may be disposed between the second outlet 5022 of the second flow channel 502 and the water inlet pipeline 6, and the second outlet 5022 of the second flow channel 502 is connected to the water inlet pipeline 6 through the three-way element 11.

Specifically, after the sterilization of the water outlet pipeline 1 is completed, the water flowing through the second flow channel 502 and the hot water flowing through the first flow channel 501 can exchange heat to form medium-temperature water in the first flow channel 501, and the medium-temperature water can be used for cooling and flushing the water outlet pipeline 1 for a fourth preset time. The fourth preset time can be set according to the actual cooling and flushing effect of the water outlet pipeline 1 (for example, the fourth preset time can be set to be 1 min), and the utility model does not limit the fourth preset time, so that the preset cooling and flushing effect can be achieved.

In an alternative embodiment of the present utility model, as shown in fig. 1 to 3, a third valve member 7 is disposed on the water inlet pipe 6 and downstream of the second valve member 4, the third valve member 7 has at least a first port 701, a second port 702 and a third port 703, the first port 701 of the third valve member 7 and the second port 702 of the third valve member 7 are connected to the water inlet pipe 6, respectively, and the second port 702 of the third valve member 7 is located downstream of the first port 701 of the third valve member 7 in the water flow direction in the water inlet pipe 6, the third port 703 of the third valve member 7 is connected to the second inlet 5021 of the second flow passage 502, and the openings of the second port 702 and the third port 703 of the third valve member 7 are adjustable, so that the amount of water supplied to the first flow passage 501 and the second flow passage 502 by the water inlet pipe 6 can be adjusted, thereby controlling the water temperature in the water outlet pipe 1.

Further, the third valve member 7 may be, but not limited to, a proportional valve capable of adjusting the opening of the valve port.

In one embodiment of the present utility model, as shown in fig. 4, the hot water supply device 2 includes a heat tank, the heat exchanging device 5 includes heat exchanging pipes, which are disposed around an outer wall of the heat tank, and the heat exchanging pipes are of a sleeve structure so as to form a second flow passage 502 along a circumferential direction of the first flow passage 501 at an outer circumference of the first flow passage 501.

In an alternative embodiment of the present utility model, as shown in fig. 1 to 3, the water purifying apparatus further includes a water purifying unit 8, and the water purifying unit 8 is connected to an inlet of the water inlet pipe, or the water purifying unit 8 is disposed on the water inlet pipe 6. The water flow supplied to the water inlet pipeline 6 can be purified by the water purifying unit 8, so that the water quality is improved, and the water safety is ensured.

Further, the water purifying unit 8 includes a membrane element. Of course, other water purifying elements may be provided according to the requirement of water quality, and the specific structure of the water purifying unit 8 is not limited herein.

In an alternative embodiment of the present utility model, the first valve element 3 is disposed at a connection position between the drain pipeline 9 and the water outlet pipeline 1, and the first valve element 3 is a one-inlet two-outlet valve, so that the sterilization process of the water purifying device of the present utility model is: the second valve element 4 can be conducted firstly, the inlet and the first outlet of the first valve element 3 are conducted, the second outlet of the first valve element 3 is turned off, at the moment, only the drainage pipeline 9 is drained, water is not supplied to a water supply port at the tail end of a user, water in the water inlet pipeline 6 only enters the hot water supply device 2 through the third valve element 7, hot water in the hot water supply device 2 flows through the first flow passage 501 of the heat exchange device 5, the water outlet pipeline 1 and the drainage pipeline 9 in sequence to be discharged, and overcurrent sterilization on the water outlet pipeline 1 is realized in the hot water discharge process; after the overcurrent sterilization is realized, when hot water exists in the water outlet pipeline 1, the second valve element 4 and the first valve element 3 can be simultaneously turned off (namely, the first valve element 3 does not supply water to the tail end of a user and does not drain water to the water drain pipeline 9), so that the hot water in the water outlet pipeline 1 is kept for a first preset time in the water outlet pipeline 1, and the heat preservation sterilization of the water outlet pipeline 1 is realized; after heat preservation and sterilization, the second valve element 4 can be conducted again, and the inlet and the first outlet of the first valve element 3 are conducted simultaneously, at the moment, the first valve element 3 only drains water to the drainage pipeline 9, hot water can flow through the first flow channel 501 of the heat exchange device 5, the water outlet pipeline 1 and the drainage pipeline 9 again to be discharged, and the secondary overcurrent sterilization of the water outlet pipeline 1 is realized; after the preset sterilization effect is achieved, the opening of the second port 702 and the third port 703 of the third valve member 7 can be adjusted, so that the water inflow of the first flow channel 501 and the second flow channel 502 can be adjusted, at this time, water flows through the first flow channel 501 and the second flow channel 502, and the water flowing through the second flow channel 502 exchanges heat with the hot water flowing through the first flow channel 501 to form medium-temperature water in the first flow channel 501, and the medium-temperature water can sequentially flow through the first flow channel 501, the water outlet pipeline 1 and the water outlet pipeline 9 to be discharged, so that the cooling and flushing of the water outlet pipeline 1 can be realized.

In an alternative embodiment of the present utility model, the first valve element 3 is disposed on the drain pipe 9, and the first valve element 3 is a one-way valve or an on-off valve, so that the sterilization process of the water purifying device of the present utility model is: as shown in fig. 6, the second valve element 4 and the first valve element 3 may be turned on first, and the control valve 1002 controls the first flow path 10011 and the second flow path 10012 of the water outlet 1001 to be in an off state, at this time, the water outlet 1001 does not supply water to the end of the user, the water in the water inlet pipe 6 only enters the hot water supply device 2 through the third valve element 7, the hot water in the hot water supply device 2 flows through the first flow path 501 of the heat exchange device 5, the water outlet pipe 1, the second flow path 10012 and the water outlet pipe 9 of the water outlet 1001 in sequence to be discharged, and the over-flow sterilization of the water outlet pipe 1 is realized in the hot water discharging process; after the overcurrent sterilization is realized, when the hot water is stored in the water outlet pipeline 1, as shown in fig. 7, the second valve element 4 and the first valve element 3 can be simultaneously turned off, so that the hot water in the water outlet pipeline 1 is kept for a first preset time in the water outlet pipeline 1, and the heat preservation sterilization of the water outlet pipeline 1 is realized; after heat preservation and sterilization, as shown in fig. 6, the second valve element 4 and the first valve element 3 can be conducted again to drain water to the drainage pipeline 9, and hot water sequentially flows through the first flow passage 501 of the heat exchange device 5, the water outlet pipeline 1, the second flow passage 10012 of the water outlet nozzle 1001 and the drainage pipeline 9 to be discharged, so that the secondary overcurrent sterilization of the water outlet pipeline 1 is realized; after the preset sterilization effect is achieved, as shown in fig. 8, the opening degrees of the second port 702 and the third port 703 of the third valve member 7 can be adjusted, so that the water inflow of the first flow channel 501 and the second flow channel 502 can be adjusted, at this time, water flows through the first flow channel 501 and the second flow channel 502, and the water flowing through the second flow channel 502 exchanges heat with the hot water flowing through the first flow channel 501 to form middle-temperature water in the first flow channel 501, and the middle-temperature water can sequentially flow through the first flow channel 501, the water outlet pipeline 1, the second flow channel 10012 of the water outlet nozzle 1001 and the water outlet pipeline 9 to be discharged, so as to realize cooling flushing of the water outlet pipeline 1.

The water purifying device has the characteristics and advantages that:

this purifier not only can satisfy the water purification requirement, for the user provides drinking water, can also realize effectively disinfecting to outlet pipe way 1 through modes such as heat preservation disinfects or heat preservation disinfects and overflow disinfects, need not to realize the disinfection to outlet pipe way 1 through continuous output hot water, effectively reduces the required hot water volume of disinfecting outlet pipe way 1, improves the sterilization efficiency to can prolong the time of disinfecting, guarantee purifier's water safety, promote user's use experience.

The foregoing is illustrative of the present utility model and is not to be construed as limiting the scope of the utility model. Any equivalent changes and modifications can be made by those skilled in the art without departing from the spirit and principles of this utility model, and are intended to be within the scope of this utility model.

Claims

1. A water purification apparatus, comprising:

a water outlet line for supplying water to the user terminal;

2. The water purification apparatus of claim 1, wherein the first valve member further has an on state to continue hot water flow through the water outlet line for a second predetermined time before the first valve member is turned off and/or to continue hot water flow through the water outlet line for a third predetermined time after the first valve member is turned off.

3. The water purification apparatus of claim 1, wherein the first valve member is a two-in and two-out valve, an inlet of the first valve member is connected to the water outlet line, and a first outlet and a second outlet of the first valve member are respectively connected to an inlet of the water discharge line and a water supply port at the end of the user.

4. The water purification apparatus of claim 1, wherein the first valve member is a one-way valve or an on-off valve.

5. The water purification apparatus of claim 1 or 4, further comprising a water outlet mechanism disposed at a connection position of the water discharge line and the water outlet line;

6. The water purification apparatus of claim 5, wherein the water outlet is a coaxial sleeve type water outlet.

7. The water purification apparatus of claim 2, further comprising a second valve member disposed upstream of the water outlet line or at an inlet of the water outlet line;

8. The water purification apparatus of claim 7, further comprising a heat exchange device having a first flow passage and a first inlet and a first outlet in communication with the first flow passage, the first outlet being connected to the inlet of the water outlet line or at least a portion of the first flow passage being part of the water outlet line.

9. The water purification apparatus of claim 8, further comprising a water inlet line connected to a water inlet of the hot water supply apparatus, a water outlet of the hot water supply apparatus connected to the first inlet;

10. The water purification apparatus of claim 9, wherein the heat exchange device further has a second flow passage and a second inlet and a second outlet in communication with the second flow passage, the second inlet being connected to the water inlet pipe, the second outlet being connected to the water inlet of the water inlet pipe or the hot water supply device, the water flowing through the second flow passage being for heat exchange with the hot water flowing through the first flow passage to form medium temperature water in the first flow passage.

11. The water purification apparatus of claim 9, wherein the heat exchange device further has a second flow passage and a second inlet and a second outlet communicating with the second flow passage, the second inlet being connected to the water inlet pipe, the second outlet being connected to the water inlet of the water inlet pipe or the hot water supply means, the water flowing through the second flow passage being for exchanging heat with the hot water flowing through the first flow passage to form medium temperature water in the first flow passage at least for a fourth preset time for cooling and flushing the water outlet pipe.

12. The water purification apparatus according to claim 10 or 11, wherein a third valve member is provided on the water intake pipe downstream of the second valve member, the third valve member having at least a first port, a second port, and a third port, the first port and the second port being connected to the water intake pipe, respectively, and along a water flow direction in the water intake pipe, the second port being downstream of the first port, the third port being connected to the second inlet, and openings of the second port and the third port being adjustable to adjust water inflow of the first flow passage and the second flow passage.

13. The water purification apparatus of claim 12, wherein the third valve element is a proportional valve that adjusts the opening of the valve port.

14. The water purification apparatus of claim 10 or 11, wherein the hot water supply apparatus comprises a heat tank, and the heat exchange apparatus comprises a heat exchange tube provided on an outer wall of the heat tank, the heat exchange tube having a sleeve structure to form the second flow passage at an outer circumference of the first flow passage in a circumferential direction of the first flow passage.

15. The water purification apparatus of claim 9, further comprising a water purification unit connected to an inlet of the water intake pipe or disposed on the water intake pipe.

16. The water purification apparatus of claim 15, wherein the water purification unit comprises a membrane element.