阅读说明：本技术 一种带热水循环功能的电热水器及其控制方法 (Electric water heater with hot water circulation function and control method thereof ) 是由 梁添杰 杨世恩 邓飞忠 仇明贵 潘叶江 于 2019-11-12 设计创作，主要内容包括：本发明公开了一种带热水循环功能的电热水器及其控制方法,包括：内胆,用于储水；电热管,设置于内胆里面用于加热内胆里面的水；出水管,用于将内胆的出水口与用水点连通；进水管,与内胆的进水口相连接；回水管,用于将用水点与进水管连通；水泵,设置于回水管上；流量传感器,设置于进水管上,用于检测进水管的通断水状态；电控组件,分别与电热管、水泵、流量传感器电性连接,其可提升用户洗浴舒适性。(The invention discloses an electric water heater with a hot water circulation function and a control method thereof, wherein the control method comprises the following steps: the inner container is used for storing water; the electric heating pipe is arranged in the inner container and used for heating water in the inner container; the water outlet pipe is used for communicating the water outlet of the inner container with a water consumption point; the water inlet pipe is connected with the water inlet of the inner container; the water return pipe is used for communicating the water using point with the water inlet pipe; the water pump is arranged on the water return pipe; the flow sensor is arranged on the water inlet pipe and used for detecting the water on-off state of the water inlet pipe; the electric control assembly is respectively and electrically connected with the electric heating tube, the water pump and the flow sensor, and can improve the bathing comfort of a user.)

1. An electric water heater with hot water circulation function, comprising:

the inner container (1) is used for storing water;

the electric heating tube (2) is arranged in the inner container (1) and is used for heating water in the inner container (1);

the water outlet pipe (3) is used for communicating the water outlet of the inner container (1) with the water consumption point (4);

the water inlet pipe (5) is connected with the water inlet of the inner container (1);

the water return pipe (6) is used for communicating the water consumption point (4) with the water inlet pipe (3);

the water pump (7) is arranged on the water return pipe (6);

the flow sensor (8) is arranged on the water inlet pipe (5) and is used for detecting the water on-off state of the water inlet pipe (5);

the electric control component (13) is respectively and electrically connected with the electric heating tube (2), the water pump (7) and the flow sensor (8).

2. The electric water heater with the hot water circulation function according to claim 1, further comprising a first temperature sensor (9) disposed in the inner container (1) for detecting the temperature of water in the inner container (1), wherein the first temperature sensor (9) is electrically connected to the electric control component (13).

3. The electric water heater with the hot water circulation function according to claim 2, further comprising a second temperature sensor (10) disposed on the water return pipe (6) for detecting the temperature of the water in the water return pipe (6), wherein the second temperature sensor (10) is electrically connected to the electric control component (13).

4. The electric water heater with hot water circulation function according to claim 1, further comprising a check valve (11) disposed on the water return pipe (6) and configured to conduct in one direction from the water consumption point (4) to the water inlet pipe (5).

5. The electric water heater with the hot water circulation function according to any one of claims 1 to 4, further comprising a three-way joint (12) connected between the water return pipe (6) and the water inlet pipe (5), wherein the flow sensor (8) is arranged between the three-way joint (12) and the water inlet end of the water inlet pipe (5).

6. A control method of an electric water heater with a hot water circulation function, which is applied to the electric water heater of any one of claims 1 to 5, the control method comprising:

receiving a switching signal of a hot water circulation mode;

judging the water on-off state of the water inlet pipe (5);

if the water inlet pipe (5) is in a water-cut-off state, detecting the temperature of water in the water return pipe (6);

and determining whether to start the water pump (7) according to the water temperature in the water return pipe (6).

7. The control method of the electric water heater with the hot water circulation function according to claim 6, wherein the step of judging the water on-off state of the water inlet pipe (5) comprises the following steps:

if the water inlet pipe (5) is in a water passing state, the water pump (7) is closed.

8. The control method of an electric water heater with hot water circulation function according to claim 7, wherein the step of determining whether to activate the water pump (7) according to the temperature of the water in the water return pipe (6) comprises:

if the temperature of the water in the water return pipe (6) is lower than a first preset temperature, starting a water pump (7);

if the temperature of the water in the water return pipe (6) is higher than a second preset temperature, the water pump (7) is turned off, wherein the second preset temperature is higher than the first preset temperature.

9. The control method of the electric water heater with the hot water circulation function according to claim 8, further comprising the steps of:

detecting the water temperature in the inner container (1);

if the temperature of the water in the inner container (1) is lower than a third preset temperature, the electric heating tube (2) is started;

if the temperature of the water in the inner container (1) is higher than a third preset temperature, the electric heating tube (2) is closed.

10. The control method of the electric water heater with the hot water circulation function according to claim 9, wherein the first preset temperature is in a range of 35 ℃ to 40 ℃;

the second preset temperature is in the range of 40 ℃ to 80 ℃;

the third preset temperature ranges from 30 ℃ to 80 ℃.

Technical Field

The invention relates to the technical field of electric water heaters, in particular to an electric water heater with a hot water circulation function and a control method.

Background

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the related art to some extent, and therefore an object of the present invention is to provide an electric water heater with hot water circulation function, which can improve the bathing comfort of users.

The above purpose is realized by the following technical scheme:

an electric water heater with hot water circulation function, comprising:

the inner container is used for storing water;

the electric heating pipe is arranged in the inner container and used for heating water in the inner container;

and the water outlet pipe is used for communicating the water outlet of the inner container with a water consumption point.

The water inlet pipe is connected with the water inlet of the inner container;

the water return pipe is used for communicating the water using point with the water inlet pipe;

the water pump is arranged on the water return pipe;

the flow sensor is arranged on the water inlet pipe and used for detecting the water on-off state of the water inlet pipe;

and the electric control assembly is respectively and electrically connected with the electric heating pipe, the water pump and the flow sensor.

In some embodiments, the water temperature sensor further comprises a first temperature sensor arranged in the inner container and used for detecting the water temperature in the inner container, and the first temperature sensor is electrically connected with the electronic control component.

In some embodiments, the water circulating system further comprises a second temperature sensor arranged on the water return pipe and used for detecting the temperature of water in the water return pipe, and the second temperature sensor is electrically connected with the electronic control component.

In some embodiments, the water-saving device further comprises a one-way valve which is arranged on the water return pipe and is configured to be communicated in a one-way mode from the water using point to the water inlet pipe.

In some embodiments, the water inlet pipe is connected with the water return pipe through a tee joint, and the flow sensor is arranged between the tee joint and the water inlet end of the water inlet pipe.

Another objective of the present invention is to provide a control method for an electric water heater with hot water circulation function, which can improve the bathing comfort of the user.

The above purpose is realized by the following technical scheme:

the control method of the electric water heater with the hot water circulation function is applied to the electric water heater, and comprises the following steps:

receiving a switching signal of a hot water circulation mode;

judging the water on-off state of the water inlet pipe;

if the water inlet pipe is in a water-cut-off state, detecting the water temperature in the water return pipe;

and determining whether to start the water pump according to the water temperature in the water return pipe.

In some embodiments, the step of determining the water on/off state of the water inlet pipe comprises the following steps:

and if the water inlet pipe is in a water-passing state, the water pump is closed.

In some embodiments, the step of determining whether to activate the water pump according to the temperature of the water inside the return pipe includes:

if the temperature of water in the water return pipe is lower than a first preset temperature, starting a water pump;

and if the water temperature in the water return pipe is higher than a second preset temperature, closing the water pump, wherein the second preset temperature is higher than the first preset temperature.

In some embodiments, the method further comprises the steps of:

detecting the water temperature in the inner container;

if the water temperature in the inner container is lower than a third preset temperature, the electric heating pipe is started;

if the temperature of the water in the inner container is higher than the third preset temperature, the electric heating pipe is closed.

In some embodiments, the first preset temperature ranges from 35 ℃ to 40 ℃;

the second preset temperature is in the range of 40 ℃ to 80 ℃;

the third preset temperature ranges from 30 ℃ to 80 ℃.

Compared with the prior art, the invention at least comprises the following beneficial effects:

1. the electric water heater and the control method have the advantages of simple and reasonable structure, convenience in installation and use and contribution to improving the bathing comfort of users.

Drawings

FIG. 1 is a schematic structural diagram of an electric water heater according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the connection between an electric water heater and a water consumption point according to an embodiment of the present invention;

fig. 3 is a flowchart illustrating a control method according to an embodiment of the present invention.

Detailed Description

The present invention is illustrated by the following examples, but the present invention is not limited to these examples. Modifications to the embodiments of the invention or equivalent substitutions of parts of technical features without departing from the spirit of the invention are intended to be covered by the scope of the claims of the invention.