CN220393389U

CN220393389U - Water purifying device

Info

Publication number: CN220393389U
Application number: CN202320949007.2U
Authority: CN
Inventors: 李俊超; 魏礼松; 慕凡
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: 2023-04-23
Filing date: 2023-04-23
Publication date: 2024-01-26
Anticipated expiration: 2033-04-23

Abstract

The present utility model is a water purifying apparatus comprising: a water inlet port; a water supply port; a heating device for heating the liquid flowing through the heating device; the heat exchange device is provided with a first flow channel and a second flow channel which can exchange heat of liquid flowing through the heat exchange device, the first flow channel is provided with at least a first inlet and a first outlet, the second flow channel is provided with at least a second inlet and a second outlet, the first inlet is connected with the outlet of the heating device, the first outlet is connected with the water supply port, the second inlet is connected with the water inlet port, and the second outlet is connected with the inlet of the heating device; the first outlet is also connected with the first inlet through the heating device so that the liquid heated by the heating device flows to the first flow channel. The utility model solves the problem of low-temperature water storage in the water outlet pipeline of the water purifying device, so that the water outlet temperature of the water purifying device can be kept in a proper temperature range, and the use experience of users is improved.

Description

Water purifying device

Technical Field

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

Background

At present, a water purifying device for public places (such as schools) has the conditions that a heat exchange pipeline and a water outlet pipeline are long, if the external environment temperature is low (such as winter), the water storage in the heat exchange pipeline and the water outlet pipeline is fast in temperature reduction, the water temperature in the pipeline is low when water is reused, normal use of a user is affected, moderate warm water can be obtained only by discharging the low-temperature water in the pipeline, and poor use experience is brought to the user. If the water purification device is installed outdoors, the lower ambient temperature may even cause the risk of frost cracking of the heat exchange pipeline and the water outlet pipeline.

Aiming at the problem of low-temperature water storage 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 effectively solves the problem of low-temperature water storage in a water outlet pipeline of the water purifying device, so that the water outlet temperature of the water purifying device can be kept in a proper temperature range, and the use experience of a user is improved.

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 inlet port;

a water supply port;

a heating device for heating the liquid flowing through the heating device;

the heat exchange device is provided with a first flow channel and a second flow channel which can exchange heat for liquid flowing through the heat exchange device, the first flow channel is provided with at least a first inlet and a first outlet, the second flow channel is provided with at least a second inlet and a second outlet, the first inlet is connected with the outlet of the heating device, the first outlet is connected with the water supply port, the second inlet is connected with the water inlet port, and the second outlet is connected with the inlet of the heating device;

the first outlet is also connected with the first inlet through the heating device so that the liquid heated by the heating device flows to the first flow channel.

In a preferred embodiment of the present utility model, the water purifying device further includes a water return pipeline, the water return pipeline is connected between the first outlet and the second inlet, and the water return pipeline is used for returning the liquid in the first flow channel to the second flow channel.

In a preferred embodiment of the present utility model, the water purifying device further includes a water inlet pipe, an inlet of the water inlet pipe is connected to the water inlet port, an outlet of the water inlet pipe is connected to the second inlet, an inlet of the water return pipe is connected to the first outlet, and an outlet of the water return pipe is connected to the water inlet pipe.

In a preferred embodiment of the present utility model, the water purifying device further includes a water outlet valve disposed at the water supply port, a water inlet of the water outlet valve is connected to the first outlet, and an inlet of the water return pipeline is connected to a water inlet of the water outlet valve or a water outlet of the water outlet valve.

In a preferred embodiment of the present utility model, the inlet of the water return pipe is directly connected to the water inlet of the water outlet valve, or the inlet of the water return pipe is connected to a pipe connected to the water inlet of the water outlet valve, or the inlet of the water return pipe is directly connected to the water outlet of the water outlet valve, or the inlet of the water return pipe is connected to a pipe connected to the water outlet of the water outlet valve.

In a preferred embodiment of the present utility model, the first flow channel, the water return channel, the water inlet channel, the second flow channel and the heating device are sequentially communicated to form a circulation flow path, and a first pressurizing device is disposed on the circulation flow path and is used for driving the liquid to circulate in the circulation flow path.

In a preferred embodiment of the present utility model, the first flow channel, the water return pipeline, the water inlet pipeline, the second flow channel are sequentially communicated with the inside of the heating device to form a circulation flow path;

the water inlet pipeline is provided with a water purifying unit, the water purifying unit comprises a membrane element and a second supercharging device, the membrane element is used for purifying liquid entering the water inlet pipeline from the water inlet port, the second supercharging device is located at the downstream of the position where the outlet of the water return pipeline is connected with the water inlet pipeline along the flowing direction of the liquid in the circulating flow path.

In a preferred embodiment of the utility model, the second pressurizing means is located upstream of the membrane element in the flow direction of the liquid in the water inlet line.

In a preferred embodiment of the present utility model, the water return pipeline is provided with a first valve element for controlling the on-off state of the flow path, the first valve element is turned on when the second supercharging device is started, and the second supercharging device is used for driving the liquid in the first flow channel to flow back into the second flow channel through the first outlet, the water return pipeline, the water purifying unit and the second inlet in sequence.

In a preferred embodiment of the present utility model, a temperature detecting device is disposed at the first outlet or the first flow channel;

the water purifying device further comprises a control device, the temperature detecting device is electrically connected with the control device, and the control device is used for controlling the liquid to circularly flow in the circulating flow path according to the detected temperature value.

In a preferred embodiment of the utility model, the return line is provided with a second valve element preventing liquid from flowing back into the first flow channel.

In a preferred embodiment of the present utility model, the water outlet valve is a concentric sleeve type water nozzle, and the water outlet valve further has a water supply port for supplying water to the end of a user;

the water outlet valve is provided with a first cavity and a second cavity which is arranged on the periphery of the first cavity in a surrounding mode, a water inlet of the water outlet valve and a water outlet of the water outlet valve are respectively communicated with the first cavity, the first cavity and the second cavity can be connected in an on-off mode, and a water supply port of the water outlet valve is communicated with the second cavity.

In a preferred embodiment of the present utility model, a third valve element for controlling the on-off state of the flow path is disposed at the water inlet.

In a preferred embodiment of the utility model, the heating means comprises a hot tank.

In a preferred embodiment of the present utility model, the heat exchange device includes a heat exchange coil, the heat exchange coil is a sleeve structure in which the second flow channel is annularly disposed at the periphery of the first flow channel, and the heat exchange coil is spirally disposed on the outer wall of the heat tank.

From the above, the water purifying device of the utility model has the characteristics and advantages that: the heat exchange device is provided with a first flow passage and a second flow passage, a first inlet of the first flow passage is connected with an outlet of the heating device, a first outlet of the first flow passage is connected with a water supply port of the water purification device, a second inlet of the second flow passage is connected with a water inlet of the water purification device, a second outlet of the second flow passage is connected with an inlet of the heating device, the heating device can heat liquid flowing through the heating device, and the heated liquid flows through the first flow passage of the heat exchange device and exchanges heat with the liquid in the second flow passage to be drunk by a user; according to the utility model, the first outlet of the first flow passage is connected with the first inlet of the first flow passage through the heating device, so that the liquid heated by the heating device flows to the first flow passage and the low-temperature stored water in the first flow passage is discharged, the problem of low-temperature stored water in the first flow passage and a pipeline connected with the first flow passage is effectively solved, the water outlet temperature of the water purifying device is ensured to be kept in a proper temperature range, and the use experience of a user is improved.

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 connection structure schematic diagrams of the water purifying device in one embodiment of the utility model.

Fig. 2: a second schematic diagram of a connection structure of the water purifying device according to an embodiment of the present utility model is shown.

Fig. 3: the structure of the heating device and the heat exchange device in the water purifying device is schematically shown in an embodiment of the utility model.

Fig. 4: the structure of the water outlet valve in the water purifying device is schematically shown in an embodiment of the utility model.

The reference numerals in the utility model are:

1. a heat exchange device; 101. a first flow passage; 1011. a first inlet; 1012. a first outlet; 102. a second flow passage; 1021. a second inlet; 1022. a second outlet; 2. a heating device; 201. a hot pot; 202. a heating rod; 3. a water inlet port; 4. a water supply port; 5. a water return line; 6. a water inlet pipeline; 7. a third valve element; 8. a water outlet valve; 801. a water inlet; 802. a water outlet; 803. a water supply port; 804. a first chamber; 805. a second chamber; 9. a first supercharging device; 10. a water purifying unit; 1001. a second supercharging device; 1002. a membrane element; 11. a first valve element; 12. a temperature detecting device; 13. a second valve 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 and 2, the present utility model provides a water purifying device, which comprises a water inlet 3, a water supply 4, a heating device 2 and a heat exchanging device 1, wherein the heating device 2 is used for heating liquid flowing through the heating device 2; the heat exchange device 1 is provided with a first flow passage 101 and a second flow passage 102 which can exchange heat for the liquid flowing through the heat exchange device 1, the first flow passage 101 is provided with at least a first inlet 1011 and a first outlet 1012, the second flow passage 102 is provided with at least a second inlet 1021 and a second outlet 1022, the first inlet 1011 of the first flow passage 101 is connected with the outlet of the heating device 2, the first outlet 1012 of the first flow passage 101 is connected with the water supply port 4, the second inlet 1021 of the second flow passage 102 is connected with the water inlet port 3, and the second outlet 1022 of the second flow passage 102 is connected with the inlet of the heating device 2; the first outlet 1012 of the first flow path 101 is also connected to the first inlet 1011 of the first flow path 101 by the heating means 2 so that the liquid heated by the heating means 2 flows to the first flow path 101.

In the utility model, a heat exchange device 1 is provided with a first flow channel 101 and a second flow channel 102, a first inlet 1011 of the first flow channel 101 is connected with an outlet of a heating device 2, a first outlet 1012 of the first flow channel 101 is connected with a water supply port 4 of a water purifying device, a second inlet 1021 of the second flow channel 102 is connected with a water inlet 3 of the water purifying device, a second outlet 1022 of the second flow channel 102 is connected with an inlet of the heating device 2, liquid flowing through the heating device 2 can be heated, the heated liquid flows through the first flow channel 101 of the heat exchange device 1, and the liquid exchanges heat with the liquid in the second flow channel 102 in the process of flowing through the first flow channel 101 and can be drunk by a user; in the utility model, the first outlet 1012 of the first flow channel 101 is also connected with the first inlet 1011 of the first flow channel 101 through the heating device 2, so that the liquid heated by the heating device 2 flows to the first flow channel 101, and the low-temperature stored water in the first flow channel 101 is discharged through the liquid inlet of the first flow channel 101, thereby effectively solving the problem of low-temperature stored water in the first flow channel 101 and a pipeline connected with the first flow channel 101, ensuring that the outlet water temperature of the water purifying device can be kept in a proper temperature range, realizing constant-temperature outlet water, and improving the use experience of users. Because the low-temperature water stored in the first flow channel 101 and the pipeline connected with the first flow channel 101 can be discharged, even if the water purifying device is installed in a low-temperature environment (such as outdoors in winter), the situation of frost cracking of the pipeline caused by water stored in the first flow channel 101 can not occur, and long-term and normal use of the device is ensured.

In the utility model, the water inlet 3 of the water purifying device can be connected with a water supply tap at the end of a user, tap water is supplied to the water inlet 3 through the water supply tap, the liquid in the second flow channel 102 is tap water supplied by the water supply tap, and the temperature of the tap water is lower than that of the liquid heated by the heating device 2 in the first flow channel 101 in a normal water supply state of the water purifying device, so that the liquid in the second flow channel 102 can exchange heat with the liquid in the first flow channel 101 and cool the liquid in the first flow channel 101 to a proper temperature range so as to supply the user with the water through the water supply port 4.

In an alternative embodiment of the present utility model, as shown in fig. 1 and 2, the water purifying apparatus further includes a water return line 5, where the water return line 5 is connected between the first outlet 1012 of the first flow channel 101 and the second inlet 1021 of the second flow channel 102, and the water return line 5 is used to return the liquid in the first flow channel 101 to the second flow channel 102. By arranging the water return pipeline 5, the low-temperature stored water in the first flow channel 101 can flow back into the second flow channel 102, and enters the heating device 2 for heating through the second outlet 1022 of the second flow channel 102, and the heated low-temperature stored water can enter the first flow channel 101 again through the outlet of the heating device 2 and the first inlet 1011 of the first flow channel 101, so that the circulation of liquid in the water purifying device is realized.

Specifically, as shown in fig. 1 and 2, the water purifying device further includes a water inlet pipeline 6, an inlet of the water inlet pipeline 6 is connected to the water inlet port 3 of the water purifying device, an outlet of the water inlet pipeline 6 is connected to the second inlet 1021 of the second flow channel 102, an inlet of the water return pipeline 5 is connected to the first outlet 1012 of the first flow channel 101, and an outlet of the water return pipeline 5 is connected to the water inlet pipeline 6. The inlet of the water inlet pipe 6 may be directly connected to the water inlet port 3 of the water purifying device, the outlet of the water inlet pipe 6 may be directly connected to the second inlet 1021 of the second flow channel 102, the inlet of the water return pipe 5 may be directly connected to the first outlet 1012 of the first flow channel 101, the outlet of the water return pipe 5 may be directly connected to the water inlet pipe 6, or other pipes or communication members may be disposed between the two interfaces, so as to realize communication between the two interfaces, and the specific communication structure between the two interfaces is not limited herein.

Further, as shown in fig. 1 and 2, a third valve element 7 is disposed at the water inlet 3 of the water purifying device, and the on-off state of the flow path at the water inlet 3 can be controlled by the third valve element 7, so as to control the water inlet of the water inlet 3. When the water purifying device is normally supplied with water (namely, a user takes water through the water supply port 4), the third valve element 7 is controlled to be in a conducting state, and the water entering the water inlet port 3 can flow out of the water supply port 4 after sequentially passing through the water inlet pipeline 6, the second flow passage 102, the heating device 2 and the first flow passage 101 so as to be supplied for the user to drink; when the water purifying device is not in use (i.e. no user takes water through the water supply port 4), the third valve element 7 can be controlled to be in a closed state, the water inlet port 3 stops water inlet, the liquid in the water purifying device only circularly flows among the first flow channel 101, the water return pipeline 5, the water inlet pipeline 6, the second flow channel 102 and the heating device 2, and the circularly flowing liquid is heated through the heating device 2, so that the condition that low-temperature water storage cannot exist in the pipeline of the water purifying device is ensured. The third valve element 7 may be a solenoid valve or a manual valve, and the specific type of the third valve element 7 is not limited herein.

In an alternative embodiment of the present utility model, as shown in fig. 1 and 2, the water purifying device further includes a water outlet valve 8, the water outlet valve 8 is disposed at the water supply port 4, a water inlet of the water outlet valve 8 is connected to the first outlet 1012 of the first flow channel 101, and an inlet of the water return pipeline 5 is connected to a water outlet of the water outlet valve 8. The water outlet valve 8 can supply water for a user through the water supply port, when the user does not need to take water through the water outlet valve 8, the water supply port of the water outlet valve 8 is closed, the water inlet of the water outlet valve 8 is connected with the first outlet 1012 of the first flow channel 101, the water outlet of the water outlet valve 8 is connected with the inlet of the water return pipeline 5, and the water outlet valve 8 participates in the circulation of liquid in the water purifying device. The water inlet of the water outlet valve 8 and the first outlet 1012 of the first flow channel 101, and the inlet of the water return pipeline 5 and the water outlet of the water outlet valve 8 may be directly connected, or other pipelines or communication members may be disposed between the two interfaces, so as to realize the communication between the two interfaces, and the specific communication structure between the two interfaces is not limited herein. When the water outlet of the water outlet valve 8 is connected with the inlet of the water return pipeline 5 through a section of pipeline, the inlet of the water return pipeline 5 can be connected with the pipeline between the water outlet of the water outlet valve 8 and the inlet of the water return pipeline 5.

In another alternative embodiment of the present utility model, the outlet valve 8 is provided at the water supply port 4, the water inlet of the outlet valve 8 is connected to the first outlet 1012 of the first flow passage 101, and the inlet of the return water line 5 is connected to the water inlet of the outlet valve 8. In this embodiment, the outlet valve 8 is used only for supplying water to the user, without participating in the circulation of the liquid within the water purification device. When the water inlet of the water outlet valve 8 is connected to the first outlet 1012 of the first flow channel 101 through a section of pipeline, the inlet of the water return pipeline 5 may be connected to the water inlet of the water outlet valve 8 or may be connected to a pipeline between the water inlet of the water outlet valve 8 and the first outlet 1012 of the first flow channel 101.

In an alternative embodiment of the present utility model, as shown in fig. 1 and 2, the first flow channel 101, the water return pipeline 5, the water inlet pipeline 6 and the second flow channel 102 are sequentially communicated with the inside of the heating device 2 (i.e. the first outlet 1012 of the first flow channel 101 is connected with the inlet of the water return pipeline 5, the water inlet pipeline 6 and the second flow channel 102 are sequentially communicated with the inside of the heating device 2, the outlet of the heating device 2 is connected with the first inlet 1011 of the first flow channel 101), so as to form a circulation flow path, and the first pressurizing device 9 is arranged on the circulation flow path, and the first pressurizing device 9 provides power for the liquid in the circulation flow path so as to drive the liquid to circulate in the circulation flow path. Wherein the first pressurizing means 9 may be, but is not limited to, a booster pump.

In an alternative embodiment of the utility model, as shown in fig. 2, a water purifying unit 10 is provided on the water inlet line 6, the water purifying unit 10 comprising a membrane element 1002 for purifying the liquid entering the water inlet line 6 from the water inlet port 3 and a second pressurizing means 1001, the second pressurizing means 1001 being located downstream of the position where the outlet of the water return line 5 is connected to the water inlet line 6 in the flow direction of the liquid in the flow path. The circulation flow path may have both the first supercharging device 9 and the second supercharging device 1001, and of course, only the second supercharging device 1001 may be provided. When only the second pressurizing device 1001 is arranged on the circulation flow path and the water purifying device is used for normally supplying water, the third valve element 7 is controlled to be in a conducting state, and the second pressurizing device 1001 is used for providing power for the liquid entering through the water inlet port 3 to smoothly pass through the membrane element 1002 for filtering; when the water purifying device is not in use, the third valve element 7 needs to be controlled to be in an off state, and the second pressurizing device 1001 only provides power for the liquid flowing in the circulation flow path so as to ensure that no low-temperature water exists in the water purifying device. The water purifying unit 10 may further include at least one filter element, a pressure tank, and/or other components required for purifying water, and the specific structure of the water purifying unit 10 is not limited herein.

Wherein the membrane element 1002 may be, but is not limited to, an RO membrane and the second pressurizing means 1001 may be, but is not limited to, a pressurizing pump.

Further, as shown in fig. 2, the second pressurizing device 1001 is located upstream of the membrane element 1002 along the flow direction of the liquid in the water inlet pipe 6, so as to provide power for the liquid to smoothly pass through the membrane element 1002.

Further, as shown in fig. 2, the water return line 5 is provided with a first valve element 11, and the on-off state of the flow path in the water return line 5 can be controlled by the first valve element 11. When the water purifying device is used for normally supplying water, the first valve element 11 is controlled to be closed, at the moment, no liquid flows through the water return pipeline 5, and the water outlet valve 8 can normally supply water to a user; when the water purifying device is deactivated, the second pressurizing device 1001 is activated, and simultaneously, the first valve element 11 is controlled to be turned on, and the second pressurizing device 1001 is used for driving the liquid in the first flow channel 101 to flow back into the second flow channel 102 through the first outlet 1012, the water return pipeline 5, the water purifying unit 10 and the second inlet 1021 in sequence, so that the normal flow of the liquid in the circulation flow channel is ensured. The first valve element 11 may be a solenoid valve or a manual valve, and the specific type of the first valve element 11 is not limited herein.

In an alternative implementation of the utility model, as shown in fig. 1, 2, a temperature detection device 12 is provided at the first outlet 1012 of the first flow channel 101 or the first flow channel 101; the water purifying device further comprises a control device, wherein the detection signal output end of the temperature detecting device 12 is electrically connected with the detection signal receiving end of the control device, the control signal output end of the control device is electrically connected with the control end of the first pressurizing device 9 and/or the second pressurizing device 1001, and the control device is used for controlling the liquid to circularly flow in the circulation flow path according to the detected temperature value. Specifically, when the water purifying device is deactivated, the temperature detecting device 12 detects the actual temperature of the liquid in the first outlet 1012 of the first flow channel 101 or the first flow channel 101 in real time, and when the actual temperature of the liquid is less than or equal to a preset minimum temperature threshold value, the control device controls the first pressurizing device 9 and/or the second pressurizing device 1001 to start, so as to drive the liquid in the circulation flow channel to circulate, thereby preventing the low-temperature water storage in the first flow channel 101 or a pipeline connected with the first flow channel 101, and realizing automatic control. Of course, the temperature detecting device 12 may be disposed at other positions (e.g., on a pipeline between the first outlet 1012 of the first flow channel 101 and the water inlet of the water outlet valve 8), so as to be able to monitor the temperature of the water stored in the first flow channel 101.

Wherein the temperature detection device 12 may be, but is not limited to, a temperature sensor.

In an alternative implementation of the utility model, as shown in fig. 1 and 2, the water return line 5 is provided with a second valve element 13 that prevents the liquid from flowing back into the first flow channel 101. The second valve element 13 may be a solenoid valve or a manual valve, and the specific type of the second valve element 13 is not limited herein.

In an alternative embodiment of the utility model, as shown in fig. 4, the outlet valve 8 is a concentric sleeve nozzle, the outlet valve 8 having at least a water inlet 801, a water outlet 802 and a water supply 803 for supplying water to the end of the user; the inside of the water outlet valve 8 is provided with a first cavity 804 and a second cavity 805, the second cavity 805 is annularly arranged on the periphery of the first cavity 804, the water inlet 801 of the water outlet valve 8 and the water outlet 802 of the water outlet valve 8 are respectively communicated with the second cavity 805, the first cavity 804 and the second cavity 805 can be connected in an on-off mode, and the water supply port 803 of the water outlet valve 8 is communicated with the first cavity 804. When a user needs to take water, the valve element arranged at the water outlet 802 can be controlled to be closed, so that the liquid in the second cavity 805 does not flow out of the water outlet 802, and at the moment, the first cavity 804 is controlled to be communicated with the second cavity 805, so that the liquid in the second cavity 805 flows into the first cavity 804 and is supplied to the user for drinking by the water supply port 803; when the user does not need to take water, the valve element (the valve element may be the first valve element 11, or a control valve for controlling the opening and closing of the water outlet 802 may be arranged on the water outlet 802 or a pipeline connected with the water outlet 802) arranged at the water outlet 802 is controlled to be conducted, the first cavity 804 is not communicated with the second cavity 805, and the liquid flowing into the second cavity 805 from the water inlet 801 flows out through the water outlet 802 and may participate in the circulation of the liquid in the circulation flow path.

Further, a control mechanism may be disposed at a communication position between the first cavity 804 and the second cavity 805, where the control mechanism is used to control on-off between the first cavity 804 and the second cavity 805. Wherein the control mechanism may be, but is not limited to, a solenoid valve, thereby effecting an electric control of the water valve 8.

In an alternative implementation of the utility model, as shown in fig. 3, the heating device 2 comprises a heat tank 201, the inside of the heat tank 201 being provided with a heating rod 202, the heating rod 202 being used for heating the liquid entering the heat tank 201. The heat exchange device 1 comprises a heat exchange coil, the heat exchange coil is of a sleeve type structure in which a second flow passage 102 is arranged around the periphery of a first flow passage 101, and the heat exchange coil is spirally arranged on the outer wall of a heat tank.

Further, an insulation layer is arranged on the outer wall of the heat tank 201, and is used for insulating the heat tank 201, so that heat loss in the heat tank 201 is avoided.

Specifically, as shown in fig. 3, the heat exchange coil includes an inner tube and an outer tube, the inner tube is coaxially disposed inside the outer tube, the first flow channel 101 is formed inside the inner tube, the second flow channel 102 is formed between an outer wall of the inner tube and an inner wall of the outer tube, the first inlet 1011 and the first outlet 1012 are respectively located at both ends of the first flow channel 101, and the first inlet 1011 and the first outlet 1012 are respectively communicated with the first flow channel 101, the second inlet 1021 and the second outlet 1022 are respectively located at both ends of the second flow channel 102, and the second inlet 1021 and the second outlet 1022 are respectively communicated with the second flow channel 102.

The water purifying device has the characteristics and advantages that:

1. the water purifying device can form a circulating flow path according to the condition of low-temperature water storage in the pipeline, so that the low-temperature water storage is heated by the heating device 2 in the circulating flow process in the circulating flow path, thereby ensuring that the water outlet temperature of the water purifying device can be kept in a proper temperature range, solving the problem that the first flow channel 101 and the pipeline connected with the first flow channel 101 are long and low-temperature water storage exists, realizing constant-temperature water outlet and improving the use experience of users; even if the water purifying device is installed in a low-temperature environment, the situation of frost cracking of the pipeline can not occur, and long-term and normal use of the equipment is ensured.

2. In the water purifying device, the temperature of the liquid in the pipeline can be acquired in real time through the temperature detection device 12, and the control device can control the liquid to circularly flow in the circulating flow path according to the detected temperature value so as to realize automatic control.

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 inlet port;

a water supply port;

a heating device for heating the liquid flowing through the heating device;

2. The water purification apparatus of claim 1, further comprising a return line connected between the first outlet and the second inlet, the return line configured to return liquid in the first flow path to the second flow path.

3. The water purification apparatus of claim 2, further comprising a water inlet line, wherein an inlet of the water inlet line is connected to the water inlet port, an outlet of the water inlet line is connected to the second inlet, an inlet of the water return line is connected to the first outlet, and an outlet of the water return line is connected to the water inlet line.

4. A water purification unit according to claim 3, further comprising a water outlet valve arranged at the water supply port, wherein the water inlet of the water outlet valve is connected to the first outlet, and wherein the inlet of the water return line is connected to the water inlet of the water outlet valve or the water outlet of the water outlet valve.

5. The water purification apparatus according to claim 4, wherein the inlet of the water return line is directly connected to the water inlet of the water outlet valve, or the inlet of the water return line is connected to a line connected to the water inlet of the water outlet valve, or the inlet of the water return line is directly connected to the water outlet of the water outlet valve, or the inlet of the water return line is connected to a line connected to the water outlet of the water outlet valve.

6. A water purification apparatus according to claim 3, wherein the first flow passage, the water return passage, the water inlet passage, the second flow passage are sequentially communicated with the inside of the heating apparatus to form a circulation flow path, and a first pressurizing means for driving the liquid to circulate in the circulation flow path is provided on the circulation flow path.

7. The water purification apparatus according to claim 3, wherein the first flow passage, the water return line, the water inlet line, the second flow passage are sequentially communicated with the inside of the heating apparatus to form a circulation flow path;

8. The water purification apparatus of claim 7, wherein the second pressurizing means is located upstream of the membrane element in a flow direction of the liquid in the water intake line.

9. The water purification device according to claim 8, wherein a first valve element for controlling the on-off state of a flow path is arranged on the water return pipeline, the first valve element is conducted while the second pressurizing device is started, and the second pressurizing device is used for driving liquid in the first flow path to flow back into the second flow path through the first outlet, the water return pipeline, the water purification unit and the second inlet in sequence.

10. The water purification apparatus according to claim 6 or 7, wherein a temperature detection means is provided at the first outlet or the first flow passage;

11. The water purifying apparatus according to claim 2, wherein the return water line is provided with a second valve element that prevents the liquid from flowing back to the first flow passage.

12. The water purification apparatus of claim 4, wherein the water outlet valve is a concentric sleeve water nozzle, the water outlet valve further having a water supply port for supplying water to a user's terminal;

13. The water purifying apparatus according to claim 1, wherein a third valve element for controlling the on-off state of the flow path is provided at the water inlet port.

14. The water purification apparatus of claim 1, wherein the heating device comprises a hot tank.

15. The water purification apparatus of claim 14, wherein the heat exchange device comprises a heat exchange coil, the heat exchange coil is a sleeve-type structure in which the second flow passage is annularly arranged on the periphery of the first flow passage, and the heat exchange coil is spirally arranged on the outer wall of the heat tank.