CN114413476B

CN114413476B - Water heater

Info

Publication number: CN114413476B
Application number: CN202210156784.1A
Authority: CN
Inventors: 郑妮; 蔡进海; 郑继鑫; 郑远强
Original assignee: Xiamen Yinluren Technology Co ltd
Current assignee: Xiamen Yinluren Technology Co ltd
Priority date: 2022-02-21
Filing date: 2022-02-21
Publication date: 2023-12-05
Anticipated expiration: 2042-02-21
Also published as: CN114413476A

Abstract

The application relates to the technical field of heating water, in particular to a water heater, which comprises a first water storage container, a first heating device and a first heating pipe; the water inlet of the first water storage container is connected with a second quality cold water pipe, and the water outlet of the first water storage container is connected with a second quality boiled water pipe; the first heating device is positioned inside or outside the first water storage container and is used for heating the second quality water in the first water storage container; the first heating pipe is arranged in the first water storage container, the water inlet formed by penetrating the first water storage container through the first heating pipe is connected with the first quality cold water pipe, and the water outlet formed by penetrating the first water storage container through the first heating pipe is connected with the first quality boiled water pipe. The water heater of the present application can produce water of various quality and multipurpose.

Description

Water heater

Technical Field

The application relates to the technical field of heating water, in particular to a water heater.

Background

In many ways and methods for heating water in the market, tap water or drinking water is generally injected into a heater, the heater heats water inside in a way of converting electric energy into heat energy, and finally the water inside the heater is led out for people to use or drink.

However, the type of the water discharged in the mode is single, so that the multi-quality and multi-purpose hot water is difficult to produce at the same time, and the requirements of people on the multi-quality and multi-purpose hot water cannot be met.

Disclosure of Invention

In order to obtain water with various qualities and purposes, the application provides a water heater.

The application provides a water heater which adopts the following technical scheme: comprises a first water storage container, a first heating device and a first heating pipe; the water inlet of the first water storage container is connected with a second quality cold water pipe, and the water outlet of the first water storage container is connected with a second quality boiled water pipe; the first heating device is positioned inside or outside the first water storage container and is used for heating the second quality water in the first water storage container; the first heating pipe is arranged in the first water storage container, the water inlet formed by penetrating the first water storage container through the first heating pipe is connected with the first quality cold water pipe, and the water outlet formed by penetrating the first water storage container through the first heating pipe is connected with the first quality boiled water pipe.

By adopting the technical scheme, cold water in the second-quality cold water pipe flows into the first water storage container from the bottom of the first water storage container, is heated into boiled water by the first heating device and flows out from the top of the first water storage container, so that second-quality boiled water is obtained. Cold water in the first quality cold water pipe flows into a first heating pipe in the first water storage container to be heated, and then flows out from a water outlet of the first heating pipe to obtain first quality boiled water. The water heater can simultaneously produce two different-purpose water of the first quality boiled water and the second quality boiled water.

Optionally, the water heater further includes a first heat exchanger, a first branch pipe of the first quality boiled water pipe is connected with the first quality hot water pipe through the first heat exchanger, the first quality cold water pipe is connected with the water inlet of the first temperature rising pipe through the first heat exchanger, and the first heat exchanger is used for heat exchange between the first quality boiled water flowing through the first branch pipe and the first quality cold water flowing through the first quality cold water pipe.

By adopting the technical scheme, the first quality cold water in the first quality cold water pipe flows into the first heat exchanger, then enters the first heating pipe in the first water storage container for heating, the heated boiled water with the first quality enters the first heat exchanger, and flows into the first quality hot water pipe after heat exchange with the first quality cold water in the first heat exchanger, so that the first quality warm water is obtained.

Optionally, the water heater further includes a second heating pipe and a second heat exchanger, wherein, the second heating pipe set up in the first water storage container, the second heating pipe runs through first water storage container is formed with water inlet and delivery port, a second branch pipe of second quality cold water pipe is through the second heat exchanger connects the water inlet of second heating pipe, the second quality cold water pipe is through the second heat exchanger connects the delivery port of second heating pipe.

By adopting the technical scheme, the second branch pipe of the second quality cold water pipe is connected to the second heat exchanger, cold water in the second branch pipe flows into the second heat exchanger and then enters the second heating pipe for heating, and the heated second quality flows into the second heat exchanger and the second quality cold water pipe for heat exchange and then flows into the second quality warm water pipe, so that the second quality warm water is finally obtained.

Optionally, the water outlet of the first water storage container is located at the top of the first water storage container, and the water inlet of the first water storage container is located at the bottom of the first water storage container.

Through adopting above-mentioned technical scheme, between 4 degrees to 100 degrees, cold water density is bigger than hot water density, so second quality cold water can sink in the bottom after getting into first water storage container from first water storage container's water inlet to flow out through the water inlet at first water storage container top after heating to can obtain the continuous second quality boiled water of little discharge capacity.

Optionally, a pressure release valve is arranged at the top of the first water storage container.

By adopting the technical scheme, the pressure value in the first water storage container can be controlled by the pressure release valve, so that the pressure in the first water storage container is kept at a proper value, and the safety problem caused by overlarge pressure in the first water storage container is reduced.

Optionally, the water outlet and the water inlet of the first water storage container are both positioned at the bottom of the first water storage container, and the position of the liquid level sensor is higher than the height of the water outlet of the first water storage container.

By adopting the technical scheme, the density of the cold water is higher than that of the hot water between 4 degrees and 100 degrees, after the second-quality cold water enters the first water storage container, the water outlet of the first water storage container is higher than the water inlet, so that the outflow of the second-quality cold water from the water outlet of the first water storage container can be reduced, and all the second-quality boiled water above the large-displacement outlet can be obtained at one time.

Optionally, the first heating device is located below the water outlet of the first water storage container.

By adopting the technical scheme, the first heating device can prevent the liquid level of water in the first water storage container from being lower than the first heating device below the first water storage container, so that the first heating device is dry-burned.

Optionally, the water heater further includes: the second water storage container is connected between the water inlet of the first water storage container and the second quality cold water pipe; the second heating device is used for preheating a second quality in the second water storage container.

By adopting the technical scheme, the second water storage container and the second heating device can preheat the second-quality cold water, so that the energy utilization rate of heat conversion is increased.

Optionally, the water heater still includes water source heat pump mechanism, waste water hot-water line, waste water cold water pipe, waste water storage water tank and heat-retaining case, waste water hot-water line is connected to the water inlet of waste water storage water tank, waste water cold water pipe is connected to the delivery port of waste water storage water tank, one end of water source heat pump mechanism is located the waste water storage water tank, and the other end of water source heat pump mechanism is located Chu Rexiang, water source heat pump mechanism is used for transferring the heat in the waste water storage water tank to the heat-retaining incasement, the heat-retaining case is used for storing the heat that water source heat pump mechanism converted, second quality cold water pipe is connected with the water inlet of first water storage container through waste water storage water tank and heat-retaining case, or second quality cold water pipe is directly connected with the water inlet of first water storage container through the heat-retaining case.

Through adopting above-mentioned technical scheme, water source heat pump mechanism carries out the heat exchange with waste hot water and second quality cold water, plays the effect to the cold water preheating in the first water storage container to reach energy reuse, the effect of increase energy utilization.

In summary, the water heater integrates the advantages of the pipeline instant heating type water heater and the water storage type water heater, the pipeline instant heating type water heater can ensure water quality, the disposable hot water outlet quantity is small, the hot water flow rate is low under the condition of limited power, the temperature of water can be gradually reduced along with the water outlet quantity, the water quality of the water storage type water heater can be affected to a certain extent, the disposable hot water outlet quantity is large, and the temperature of water is relatively constant. Therefore, in some cases, both products are provided. The water heater creatively integrates the advantages of the two modes, and has a very outstanding effect in specific occasions.

The application has at least one of the following beneficial technical effects:

1. the water heater can simultaneously generate four different purposes of first-quality warm water, first-quality boiled water, second-quality warm water and second-quality boiled water and water with different temperatures, so as to meet different needs of people;

2. the water heater has high energy conversion rate, and can convert cold water and hot water into warm water;

3. the water source heat pump mechanism of the water heater can increase the energy utilization rate.

Drawings

FIG. 1 is a schematic overall structure of a first embodiment of the present application;

FIG. 2 is a schematic view of a first quality water structure according to a first embodiment of the present application;

FIG. 3 is a schematic view of a second quality water structure according to a first embodiment of the present application;

FIG. 4 is a schematic diagram of the functional structure of a first embodiment of the present application;

FIG. 5 is a schematic diagram of the overall structure of a second embodiment of the present application;

FIG. 6 is a schematic overall structure of a third embodiment of the present application;

FIG. 7 is a schematic overall structure of a fourth embodiment of the present application;

fig. 8 is a functional schematic diagram of a fourth embodiment of the present application.

Reference numerals illustrate: 1. a water container mechanism; 11. a first water storage container; 111. a pressure release valve; 112. a pressure gauge; 12. a first heating device; 2. a first quality water mechanism; 21. a first warming pipe; 211. a fin; 22. a first heat exchanger; 3. a second quality water mechanism; 31. a second warming pipe; 32. a second heat exchanger; 41. a second quality cold water pipe; 411. a second branch pipe; 412. a third branch pipe; 413. a fourth branch pipe; 42. a second quality water boiling pipe; 43. a second quality warm water pipe; 44; a water supply pipe; 51. a first quality cold water pipe; 52. a first quality water boiling pipe; 521. a first branch pipe; 53. a first quality warm water pipe; 6. a second water storage container; 7. a second heating device; 71. a ventilation duct; 8. a heat preservation layer; 9. a liquid level sensor; 10. a hollow pipe; 101. a filter element; 20. a water source heat pump device; 200. a water source heat pump mechanism; 210. a waste water hot water pipe; 220. a wastewater cold water pipe, 230, a wastewater storage tank; 240. a heat storage tank; 250. an evaporator; 260. a condenser; 270. a first regulating valve; 280. and a second regulating valve.

Detailed Description

The application is described in further detail below with reference to fig. 1-8.

Embodiment one:

the embodiment of the application discloses a water heater, referring to FIG. 1, which comprises a water container mechanism 1, a first quality water mechanism 2 and a second quality water mechanism 3. The first quality water mechanism 2 and the second quality water mechanism 3 are respectively located at two sides of the water container mechanism 1, and the water container mechanism 1 is used for converting the second quality cold water into the second quality boiled water and providing heat for the first quality water mechanism 2 and the second quality water mechanism 3.

The first quality water may be high quality water that can be drunk, such as drinking water, or low quality water that is used for life, such as tap water. The second quality water may be high quality water that can be drunk, such as drinking water, or low quality water that is used for life, such as tap water. In the present embodiment, the first quality water is high quality water, and the second quality water is low quality water, wherein the two quality water can be exchanged, but the first quality water and the second quality water are different quality water.

Referring to fig. 1, the water container mechanism 1 includes a first water storage container 11 and a first heating device 12. The lower part of the first water storage container 11 is connected with a second quality cold water pipe 41, and the top of the first water storage container 11 is connected with a second quality boiled water pipe 42. The top of the first water storage container 11 is provided with a pressure release valve 111 and a pressure gauge 112, and the pressure gauge 112 displays the pressure value inside the first water storage container 11. When the pressure in the first water storage container 11 is continuously increased, the pressure value reaches a certain value, and the pressure release valve 111 is opened, so that the internal pressure of the first water storage container 11 is always at a proper level. Under the same atmospheric pressure, the density of cold water is greater than that of hot water between 4 degrees and 100 degrees, and the cold water is above hot water below, so that the water inlet of the first water storage container 11 is at the bottom, and the water outlet of the first water storage container 11 is at the top.

Referring to fig. 1, the first heating device 12 is fixedly provided inside or outside the first water container 11, and the first heating device 12 may be integrated with the inner wall of the first water container 11. The first heating device 12 may be: an electric heater based on a ceramic heating element, an electric heater based on an electric conductor, an electromagnetic induction heater and a microwave heater. Wherein, the electric heater based on the ceramic heating element has the advantages of corrosion resistance, uniform temperature, good heat conduction performance and the like, does not contain harmful substances of heavy metals, and is suitable for heating the second quality water in the first water storage container 11. The electric heater based on the electric conductor is low in price, high in electric heating conversion efficiency, stable in heat output and suitable for heating the second quality water in the first water storage container 11. The electromagnetic induction heater is efficient, energy-saving, small in pollution, high in heating speed and suitable for heating the second quality water in the first water storage container 11. The microwave heater has the advantages of high heating speed, uniform heating and sensitive reaction, and is suitable for heating the second quality water in the first water storage container 11. This embodiment takes an electric heater based on an electric conductor as an example.

Referring to fig. 2, the first quality water mechanism 2 includes a first temperature increasing pipe 21 and a first heat exchanger 22. The first heating tube 21 is located inside the first water storage container 11, the first heating tube 21 is spirally wound, and annular fins 211 are coaxially and uniformly fixed on the outer tube wall of the first heating tube 21. The first temperature-raising pipe 21 is spirally wound, and the fins 211 are used to increase the heated area of the first temperature-raising pipe 21. The first quality boiled water pipe 52 penetrates the first water storage container 11 at the upper part of the first temperature raising pipe 21, and the first quality cold water pipe 51 penetrates the first water storage container 11 at the lower part of the first temperature raising pipe 21.

Referring to fig. 2, the first heat exchanger 22 is located outside the first water storage container 11, and the first heat exchanger 22 is a plate heat exchanger or a double pipe heat exchanger. The upper end face and the lower end face of the first heat exchanger 22 are respectively provided with two interfaces, the water outlet of the first heating pipe 21 is connected with the first quality boiled water pipe 52, the first quality boiled water pipe 52 is connected with the first branch pipe 521, the first branch pipe 521 of the first quality boiled water pipe 52 is connected with the first quality hot water pipe 53 through the first heat exchanger 22, the first quality cold water pipe 51 is connected with the water inlet of the first heating pipe 21 through the first heat exchanger 22, and the first heat exchanger 22 plays a role of preheating the first quality cold water in the first quality cold water pipe 51, so that the water temperature of the first quality water flowing into the first heating pipe 21 from the first heat exchanger 22 is higher than the water temperature of the first quality cold water, and the heating speed of the first quality in the first heating pipe 21 is accelerated. The first heat exchanger 22 is used for heat exchange between the first quality boiled water flowing through the first branch pipe 521 and the first quality cold water flowing through the first quality cold water pipe 51.

Referring to fig. 3, the second quality water mechanism 3 includes a second warming pipe 31 and a second heat exchanger 32. The second warming tube 31 is located inside the first water storage container 11 and at a side remote from the first warming tube 21. The surface area of the second heating tube 31 is smaller than that of the first heating tube 21, so that the temperature of the second quality hot water flowing out of the second heating tube 31 can be lower than that of the second quality boiled water, and the second quality boiled water flowing out is mainly used for heat exchange with the second quality cold water and forms second quality warm water. The second warming pipe 31 is spirally wound, and the second warming pipe 31 is formed with a water inlet and a water outlet penetrating through the first water storage container 11.

Referring to fig. 3, the second heat exchanger 32 is located outside the first water storage container 11 and near one side of the second warming pipe 31. The second heat exchanger 32 is a plate heat exchanger or a double pipe heat exchanger, two interfaces are respectively arranged on the upper end face and the lower end face of the second heat exchanger 32, the second branch pipe 411 of the second quality cold water pipe 41 is connected with the water inlet of the second heating pipe 31 through the second heat exchanger 32, the second quality hot water pipe 43 is connected with the water outlet of the second heating pipe 31 through the second heat exchanger 32, and the second heat exchanger 32 plays a role in preheating the second quality cold water in the second quality cold water pipe 41, so that the water temperature of the second quality cold water flowing into the second heating pipe 31 from the second heat exchanger 32 is higher than that of the second quality cold water, and the heating speed of the second quality cold water in the second heating pipe 31 is accelerated.

The implementation principle of the embodiment of the application is as follows:

referring to fig. 4, the second quality cold water in the second quality cold water pipe 41 flows into the first water storage container 11, and the water in the first water storage container 11 is heated to boiled water by the first heating device 12, and then flows out from the second quality boiled water pipe 42 at the top of the first water storage container 11.

The first quality cold water in the first quality cold water pipe 51 flows into the first heat exchanger 22, exchanges heat with the first quality hot water in the first heat exchanger 22, flows into the first temperature raising pipe 21 in the first water storage container 11, is heated by the first temperature raising pipe 21, forms the first quality hot water, and flows out of the first quality hot water pipe 52.

A part of the first quality boiled water in the first quality boiled water pipe 52 enters the first heat exchanger 22 through the first branch pipe 521, exchanges heat with the first quality cold water in the first heat exchanger 22, and then flows out of the first quality hot water pipe 53.

A part of the second quality cold water in the second quality cold water pipe 41 flows into the second heat exchanger 32 through the second branch pipe 411, exchanges heat with the heated second quality hot water in the second heat exchanger 32, flows into the second temperature raising pipe 31, flows into the second heat exchanger 32 to exchange heat with the second quality cold water after being heated by the second temperature raising pipe 31, and then flows out of the second quality hot water pipe 43. The first quality boiled water which can be drunk, the first quality warm water which can be drunk, the second quality warm water for life and the second quality boiled water for life can be obtained through the embodiment, and the second quality boiled water can be continuously discharged with small discharge capacity.

Embodiment two:

the present embodiment differs from the first embodiment in that, referring to fig. 5, both the water inlet and the water outlet of the first water storage container 11 are located at the lower portion of the first water storage container 11. The liquid level sensor 9 is installed at the lower part of the first water storage container 11, and the hollow pipe 10 is installed at the top of the first water storage container 11.

Since the density of cold water is greater than that of hot water between 4 degrees and 100 degrees under the same atmospheric pressure, the cold water is sunk into the first water storage container 11, so that the water outlet of the first water storage container 11 is higher than the water inlet of the first water storage container 11. The water outlet of the first water storage container 11 is connected with a second quality boiled water pipe 42, and the water inlet of the first water storage container 11 is connected with a second quality cold water pipe 41. The liquid level sensor 9 adopts a NO1-SWC-T type high temperature liquid level sensor 9, and the NO1-SWC-T type high temperature liquid level sensor 9 has the characteristics of water resistance, explosion resistance and high temperature resistance, and is suitable for working in a high temperature water container. The position of the liquid level sensor 9 is higher than the height of the water outlet of the first water storage container 11, the liquid level sensor 9 is fixedly connected with the inner wall of the first water storage container 11, and when the liquid level is lower than the liquid level sensor 9, second-quality cold water in the second-quality cold water pipe 41 enters the first water storage container 11 from the water inlet of the first water storage container 11. The first heating device 12 is located at the bottom of the first water storage container 11 and is lower than the water outlet of the first water storage container 11, and the filter element 101 is arranged inside the hollow pipe 10 to prevent air dust from entering the first water storage container 11.

the second quality cold water in the second quality cold water pipe 41 flows into the first water storage container 11, and after the second quality cold water and the second quality hot water are mixed, the cold water is sunk into the bottom of the first water storage container 11 due to the high density, and then is heated into boiled water by the first heating device 12. The boiled water with the second quality flows out from the water outlet of the first water storage container 11, and meanwhile, the air pipe 10 at the top of the first water storage container 11 is filled with air, so that the pressure balance in the first water storage container is kept.

When the liquid level in the first water storage container 11 falls below the sensing range of the liquid level sensor 9, the liquid level sensor 9 is connected with a controller, the controller is connected with a solenoid valve (not shown in the figure), the solenoid valve controls the second quality water opening pipe 42 to be closed, and the solenoid valve controls the second quality cold water pipe 41 to supplement water in the first water storage container 11. In this embodiment, the water outlet of the first water storage container 11 can discharge the second quality boiled water with a large discharge capacity in a short time. The first heating device 12 is always below the water level, and dry burning of the first heating device 12 can be prevented.

Embodiment III:

the first difference between this embodiment and the embodiment is that referring to fig. 6, a water heater further includes a second water storage container 6, a second heating device 7, and an insulation layer 8.

The second water storage container 6 is arranged around the periphery of the first water storage container 11, one end of the second water storage container 6 is connected with the first water storage container 11 through a second quality cold water pipe 41, and the other end of the second water storage container 6 is connected with a water supply pipe 44. The second heating means 7 is provided inside the second water storage container 6. The second heating device 7 is an air source heat pump heating device, and an air source pump and the outside are provided with an air duct 71.

The air heat source pump adopts a small amount of electric energy to drive the compressor to operate, a large amount of heat energy is absorbed from air, gaseous working medium is compressed into a high-temperature and high-pressure liquid state by the compressor, and then enters the condenser to release heat so as to heat water, so that the water can be heated to a proper temperature continuously and circularly. After the second water storage container 6 is filled with the second quality cold water, the air heat source pump is started, and after the second quality cold water in the second water storage container 6 is heated to a proper temperature, the air heat source pump stops working. After the temperature of the second quality cold water in the second water storage container 6 is reduced to a certain degree, the air heat source pump is started again, and the circulation is performed so that the second quality cold water in the second water storage container 6 is kept at a proper temperature. An insulating layer 8 is arranged between the outer wall of the first water storage container 11 and the outer wall of the second water storage container 6 and between the second water storage container 6 and the wall of the first water storage container 11, and the insulating layer 8 is made of polyurethane.

the water in the water supply pipe 44 flows into the second water storage container 6, the second heating means 7 heats and maintains a proper temperature of the second quality in the second water storage container 6, and then the second quality heated by the second heating means 7 flows into the first water storage container 11 through the second quality cold water pipe 41 and flows into the second heat exchanger 32 through the second branch pipe 411 to exchange heat.

Embodiment four:

a difference between this embodiment and the embodiment is that, referring to fig. 7 and 8, a water heater further includes a water source heat pump device 20, and the water source heat pump device 20 includes a water source heat pump mechanism 200, a waste water hot water pipe 210, a waste water cold water pipe 220, a waste water storage tank 230, and a heat storage tank 240. Wherein the second quality cold water pipe 41 is provided with a third sub-manifold 412 and a fourth sub-manifold 413.

Referring to fig. 7 and 8, the water source heat pump device 20 is located outside the first water storage container 11. The third branch pipe 412 is connected to the water inlet of the first water storage container 11 through the wastewater storage tank 230 and the heat storage tank 240. The fourth sub-manifold 413 is connected to the water inlet of the first water storage container 11 through the heat storage tank 240. Wherein the third sub-manifold 412 is provided with a first regulating valve 270 and the fourth sub-manifold 413 is provided with a second regulating valve 280. The water inlet of the wastewater storage tank 230 is connected with the wastewater hot water pipe 210, and the water outlet of the wastewater storage tank 230 is connected with the wastewater cold water pipe 220. The heat storage tank 240 has a good heat preservation function, and contains a fixed aqueous solution therein. The water source heat pump mechanism 200 is a technology for realizing the transfer of low-level heat energy to high-level heat energy through the input of a small amount of high-level electric energy. The two ends of the water source heat pump mechanism 200 are respectively provided with an evaporator 250 and a condenser 260, wherein the evaporator 250 is positioned in the wastewater storage tank 230, the condenser 260 is positioned in the heat storage tank 240, and the water source heat pump mechanism 200 can transfer heat in the wastewater storage tank 230 into the heat storage tank 240. In this embodiment, the waste hot water may be domestic waste hot water such as bath water.

the waste hot water enters the waste water storage tank 230 through the waste hot water pipe 210, and forms waste cold water after heat exchange in the waste water storage tank 230 and flows out of the waste cold water pipe 220. The water source heat pump mechanism 200 transfers heat from the wastewater storage tank 230 to the heat storage tank 240.

When the waste hot water in the waste water storage tank 230 is more, a large amount of waste hot water enters the waste water storage tank 230 through the waste hot water pipe 210, the first regulating valve 270 is opened, and the second regulating valve 280 is closed. The second quality cold water enters the wastewater storage tank 230 through the third branch pipe 412, flows out of the wastewater storage tank 230 after heat exchange between the second quality cold water and the wastewater in the wastewater storage tank 230, then enters the heat storage tank 240, and flows into the first water storage container 11 after heat exchange between the second quality cold water and the aqueous solution in the heat storage tank 240.

When the waste water in the waste water storage tank 230 is less, the second regulating valve 280 is opened and the first regulating valve 270 is closed. The second quality cold water enters the heat storage tank 240 through the fourth branch pipe 413, exchanges heat with the aqueous solution in the heat storage tank 240, and flows into the first water storage container 11.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims

1. A water heater, comprising:

the water inlet of the first water storage container (11) is connected with a second quality cold water pipe (41), the water outlet of the first water storage container (11) is connected with a second quality boiled water pipe (42), the water outlet and the water inlet of the first water storage container (11) are both positioned at the bottom of the first water storage container (11), and the water outlet of the first water storage container (11) is higher than the water inlet of the first water storage container (11);

a first heating device (12), wherein the first heating device (12) is positioned inside or outside the first water storage container (11), the first heating device (12) is used for heating second quality water in the first water storage container (11), and the first heating device (12) is positioned below a water outlet of the first water storage container (11);

a first temperature-raising pipe (21); the first heating pipe (21) is arranged in the first water storage container (11), a water inlet formed by penetrating the first water storage container (11) through the first heating pipe (21) is connected with a first quality cold water pipe (51), and a water outlet formed by penetrating the first water storage container (11) through the first heating pipe (21) is connected with a first quality water boiling pipe (52);

a first heat exchanger (22), a first branch pipe (521) of the first quality boiled water pipe (52) is connected with a first quality hot water pipe (53) through the first heat exchanger (22), the first quality cold water pipe (51) is connected with a water inlet of the first temperature rising pipe (21) through the first heat exchanger (22), and the first heat exchanger (22) is used for heat exchange between the first quality boiled water flowing through the first branch pipe (521) and the first quality cold water flowing through the first quality cold water pipe (51);

the second heating pipe (31) is arranged in the first water storage container (11), the second heating pipe (31) penetrates through the first water storage container (11) to form a water inlet and a water outlet, one second branch pipe (411) of the second quality cold water pipe (41) is connected with the water inlet of the second heating pipe (31) through the second heat exchanger (32), and the second quality hot water pipe (43) is connected with the water outlet of the second heating pipe (31) through the second heat exchanger (32);

the first water storage container (11) is provided with a liquid level sensor (9), and the position of the liquid level sensor (9) is higher than the height of a water outlet of the first water storage container (11);

the second quality cold water in the second quality cold water pipe (41) flows into the first water storage container (11), after the second quality cold water and the second quality hot water are mixed, the cold water can sink into the bottom of the first water storage container (11) due to the high density, and then the boiled water is heated into boiled water through the first heating device (12);

the second quality boiled water flows out from the water outlet of the first water storage container (11), the top of the first water storage container (11) is charged with air, when the liquid level in the first water storage container (11) falls below the sensing range of the liquid level sensor (9), the liquid level sensor (9) is connected with a controller, the controller is connected with an electromagnetic valve, the electromagnetic valve controls the second quality boiled water pipe (42) to be closed, and the electromagnetic valve controls the second quality cold water pipe (41) to supplement water in the first water storage container (11).

2. The water heater of claim 1, further comprising: a second water storage container (6) and a second heating device (7), wherein the second water storage container (6) is connected between a water inlet of the first water storage container (11) and the second quality cold water pipe (41); the second heating device (7) is used for preheating the second quality cold water in the second water storage container (6).

3. The water heater according to claim 1, further comprising a water source heat pump mechanism (200), a waste water hot water pipe (210), a waste water cold water pipe (220), a waste water storage tank (230) and a heat storage tank (240), wherein a water inlet of the waste water storage tank (230) is connected with the waste water hot water pipe (210), a water outlet of the waste water storage tank (230) is connected with the waste water cold water pipe (220), one end of the water source heat pump mechanism (200) is located in the waste water storage tank (230), the other end of the water source heat pump mechanism (200) is located in the heat storage tank (240), the water source heat pump mechanism (200) is used for transferring heat in the waste water storage tank (230) to the heat storage tank (240), the heat storage tank (240) is used for storing heat converted by the water source heat pump mechanism (200), and the second quality cold water pipe (41) is connected with a water inlet of the first water storage tank (11) through the waste water storage tank (230) and the heat storage tank (240), or the second quality cold water pipe (41) is directly connected with a water inlet of the first water storage tank (11) through the heat storage tank (240).