CN219473954U - Water heating system - Google Patents

Abstract

The utility model belongs to the technical field of heat supply, and particularly discloses a hot water system. Wherein hot water system includes hanging stove, hanging stove is connected with domestic water inlet tube and domestic water outlet pipe, domestic water outlet pipe intercommunication is in the user terminal, hot water system still includes electric heating system and controller, electric heating system includes electric heater unit, electric heater unit includes first import, second import and first export, first import is through first pipeline intercommunication domestic water inlet tube, first export is through second pipeline intercommunication domestic water outlet pipe, the second import is through third pipeline intercommunication domestic water outlet pipe, be provided with first water pump on the third pipeline, electric heater unit and first water pump all with controller electric connection. The utility model realizes the heating of living water by adopting an electric heating mode, realizes the simultaneous application of a heating function and a bathroom function, and can quickly obtain the heated living water by a user so as to reduce the waste of water resources.

Description

Water heating system

Technical Field

The utility model relates to the technical field of heat supply, in particular to a hot water system.

Background

With the improvement of living standard, the gas wall-mounted furnace is favored by more and more urban ordinary families. The gas hanging stove is a device using gas as energy, is generally used for heating and supplying domestic hot water, implements peak-valley electricity policy in areas with abundant electric power, and is more economical when adopting electric energy during valley electricity, but the gas hanging stove cannot fully utilize the economical electric energy. The gas wall-mounted stove has the functions of heating and bathroom, but the heating function and the bathroom function cannot be used simultaneously, when a user uses the bathroom function, the heating function cannot be used, the heating temperature is reduced, the indoor temperature cannot be kept, the use of the bathroom function is finished, the heating function can be used, and the gas wall-mounted stove is very unfriendly for a user group with more family members. Moreover, the domestic water outlet pipe of the gas wall-mounted boiler is connected to the user side, but the heating position of the domestic water outlet pipe is far away from the user side, the domestic water between the heating position of the domestic water outlet pipe and the user side is cold water, and when a user needs to use hot water, the cold water is discharged first to apply the heated domestic water, so that on one hand, water resource waste is caused; on the other hand, the user cannot quickly obtain the required hot water.

Disclosure of Invention

The technical problem to be solved by the utility model is to provide the hot water system, which realizes that living water is heated in an electric heating mode, realizes that a heating function and a bathroom function can be simultaneously applied, and a user can quickly acquire the heated living water, so that water resource waste is reduced.

The first technical problem is solved by the following technical scheme:

the utility model provides a hot water system, includes the hanging stove, hanging stove is connected with domestic water inlet tube and domestic water outlet pipe, hot water system still includes electric heating system, electric heating system includes:

the electric heating device comprises a first inlet, a second inlet and a first outlet, wherein the first inlet is communicated with the domestic water inlet pipe through a first pipeline, the first outlet is communicated with the domestic water outlet pipe through a second pipeline, the second inlet is communicated with the domestic water outlet pipe through a third pipeline, and a first water pump is arranged on the third pipeline;

and the electric heating device and the first water pump are electrically connected with the controller.

Compared with the background technology, the hot water system has the following beneficial effects:

firstly, when the user side is opened, domestic water is conveyed into the electric heating device through the domestic water inlet pipe, the controller controls the electric heating device to heat the domestic water, and then the heated domestic water is conveyed to the user side through the domestic water outlet pipe, so that the domestic water is heated in an electric heating mode, the heating function of the water heating system is not affected, the heating function and the bathroom function can be simultaneously applied, and the user experience is improved.

Moreover, the controller can also control the first water pump to drive the living water to circulate between the electric heating device and the living water outlet pipe, and meanwhile, the electric heating device heats the living water in real time, so that the circulating living water is always at a preset temperature, and when the user side is opened, the heated living water can be rapidly discharged through the user side.

In one embodiment, a first switching device is arranged between the domestic water inlet pipe and the first pipeline, and the first pipeline is selectively communicated with the domestic water inlet pipe through the first switching device; and/or

The domestic water outlet pipe and the second pipeline are provided with a second switching device, and the second pipeline is selectively communicated with the domestic water outlet pipe through the second switching device.

In one embodiment, a first electromagnetic valve is arranged between the second inlet and the first water pump, and the first electromagnetic valve is electrically connected with the controller.

In one embodiment, the first switching device comprises a first three-way valve, the first three-way valve is arranged on the domestic water inlet pipe, and the first inlet is communicated with one of the ports of the first three-way valve; the second switching device comprises a second three-way valve, the second three-way valve is arranged on the domestic water outlet pipe, and the second inlet is communicated with one of the ports of the second three-way valve.

In one embodiment, the first switching device includes a second electromagnetic valve and a third electromagnetic valve, the second electromagnetic valve is disposed on the first pipeline, a first communication position is disposed between the first pipeline and the domestic water inlet pipe, the third electromagnetic valve is disposed on the domestic water inlet pipe, and the third electromagnetic valve is disposed between the first communication position and the wall-hanging stove;

the second switching device comprises a fourth electromagnetic valve and a fifth electromagnetic valve, the fourth electromagnetic valve is arranged on the second pipeline, a second communication position is arranged between the second pipeline and the domestic water outlet pipe, the fifth electromagnetic valve is arranged on the domestic water outlet pipe, and the fifth electromagnetic valve is located between the second communication position and the wall-mounted boiler.

In one embodiment, the third pipeline is provided with a temperature sensor, and the temperature sensor is electrically connected with the controller.

In one embodiment, the electric heating device comprises a first electric heating component and a second electric heating component which are sequentially connected in series between the first inlet and the first outlet through pipelines, the second inlet is arranged on the first electric heating component, and the heating power of the second electric heating component is adjustable.

In one embodiment, the first electric heating assembly comprises a heating tube and a heating wire wound around the heating tube, the heating tube is connected in series between the first inlet and the second electric heating assembly, and the second inlet is communicated with the heating tube.

In one embodiment, the second electric heating assembly comprises at least two heating groups with different total heating power, each heating group can be independently controlled to be started and stopped, and all the heating groups are connected between the first electric heating assembly and the first outlet in series or in parallel through pipelines.

In one embodiment, the second pipeline is provided with a temperature controller, the temperature controller is electrically connected to all the heating groups, and the temperature controller is electrically connected to the controller.

Drawings

FIG. 1 is a schematic diagram of a water heating system according to an embodiment of the present utility model;

FIG. 2 is a schematic view of an electrical heating device provided in an embodiment of the present utility model;

FIG. 3 is a schematic view of an electrical heating device provided in other embodiments of the utility model;

fig. 4 is a schematic structural diagram of a first switching device and a second switching device according to an embodiment of the present utility model.

Description of the reference numerals:

1. a wall-mounted furnace; 11. a domestic water inlet pipe; 12. a domestic water outlet pipe; 13. a burner; 14. a fuel gas proportional valve; 15. a fume collecting hood; 16. a main heat exchanger; 17. a plate heat exchanger; 18. a heating water inlet pipe; 19. a heating water outlet pipe; 101. a second water pump; 102. a third three-way valve;

2. an electric heating system; 21. an electric heating device; 211. a first electrical heating assembly; 212. a second electrical heating assembly; 2121. a first heating group; 21211. a first PTC ceramic heater; 21212. a second PTC ceramic heating body; 2122. a second heating group; 21221. a third PTC ceramic heating body; 21222. a fourth PTC ceramic heating body; 213. a first inlet; 214. a second inlet; 215. a first outlet; 22. a first pipeline; 23. a second pipeline; 24. a third pipeline; 25. a first water pump; 26. a user terminal; 271. a first three-way valve; 272. a second electromagnetic valve; 273. a third electromagnetic valve; 281. a second three-way valve; 282. a fourth electromagnetic valve; 283. a fifth electromagnetic valve; 29. a temperature controller; 200. a first electromagnetic valve; 201. a temperature sensor.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

As shown in fig. 1, the embodiment provides a water heating system, the water heating system includes a wall-mounted boiler 1, the wall-mounted boiler 1 is connected with a domestic water inlet pipe 11 and a domestic water outlet pipe 12, the domestic water outlet pipe 12 is connected to a user end 26, the water heating system further includes an electric heating system 2 and a controller, and the electric heating system 2 includes an electric heating device 21, a first pipeline 22, a second pipeline 23 and a third pipeline 24. The electric heating device 21 comprises a first inlet 213, a second inlet 214 and a first outlet 215, the first inlet 213 is selectively communicated with the domestic water inlet pipe 11 through a first pipeline 22, the first outlet 215 is selectively communicated with the domestic water outlet pipe 12 through a second pipeline 23, the second inlet 214 is communicated with the domestic water outlet pipe 12 through a third pipeline 24, a first water pump 25 is arranged on the third pipeline 24, and the electric heating device 21 is used for heating the domestic water; the electric heating device 21 and the first water pump 25 are electrically connected with the controller.

Firstly, when the user side 26 is opened, domestic water is conveyed into the electric heating device 21 through the domestic water inlet pipe 11 and the first pipeline 22, the controller controls the electric heating device 21 to heat the domestic water, and then the heated domestic water is conveyed to the user side 26 through the second pipeline 23 and the domestic water outlet pipe 12 in sequence, so that the domestic water is heated in an electric heating mode, the heating function of the hot water system is not affected, the heating function and the bathroom function can be simultaneously applied, and the user experience is improved. Moreover, when the user terminal 26 is closed, the controller controls the first water pump 25 to drive the circulating water to flow between the third pipeline 24, the electric heating device 21, the second pipeline 23 and the domestic water outlet pipe 12, and meanwhile, the electric heating device 21 heats the circulating water in real time, so that the circulating flowing domestic water is always at a preset temperature, and when the user terminal 26 is opened, the heated domestic water can be quickly discharged through the user terminal 26.

In some embodiments, a first solenoid valve 200 is disposed between the second inlet 214 and the first water pump 25, the first solenoid valve 200 is electrically connected to the controller, when the first water pump 25 is opened, the first solenoid valve 200 is opened, and the first solenoid valve 200 ensures that the domestic water flows unidirectionally from the first water pump 25 to the second inlet 214 in the third pipeline 24.

In some embodiments, the third pipeline 24 is provided with a temperature sensor 201, the temperature sensor 201 is electrically connected to a controller, the temperature sensor 201 can detect the temperature of the water in the third pipeline 24, and the controller adjusts the heating power of the electric heating device 21 according to the temperature of the water in the third pipeline 24. In the present embodiment, the temperature sensor 201 is located upstream of the first water pump 25.

In some embodiments, the second inlet 214 is connected to the end of the domestic water outlet pipe 12 near the user end 26 through the third pipeline 24, so that the distance between the circulating water and the user end 26 is reduced, and the user can quickly obtain the heated domestic water at the user end 26.

In some embodiments, the electric heating device 21 includes a first electric heating component 211 and a second electric heating component 212 sequentially connected in series between a first inlet 213 and a first outlet 215 through a pipeline, the second inlet 214 is disposed on the first electric heating component 211, and the heating power of the second electric heating component 212 is adjustable. When the living water in the first pipeline 22 and the third pipeline 24 flows through the first electric heating component 211, the first electric heating component 211 can quickly heat the living water to perform a preheating function; the second electric heating assembly 212 can then adjust the heating temperature of the domestic water as the preheated domestic water passes through the second electric heating assembly 212.

In some embodiments, the first electric heating assembly 211 comprises a heating tube and a heating wire wound around the heating tube, the heating tube being connected in series between the first inlet 213 and the second electric heating assembly 212, the second inlet 214 being in communication with the heating tube. The resistance wire is a low-damping resistance wire, and the effect of quickly increasing the water temperature is achieved when domestic water flows through the heating pipe.

In some embodiments, as shown in fig. 2, the second electric heating component 212 is a ceramic PTC electric heating device, the second electric heating component 212 includes at least two heating groups with different total heating power, each heating group can be independently controlled to be turned on or off, all heating groups are connected in series or parallel between the first electric heating component 211 and the first outlet 215 through pipelines, and all heating groups are convenient for adjusting the heating temperature of the living water.

In this embodiment, the second electric heating assembly 212 includes two heating groups, namely a first heating group 2121 and a second heating group 2122, wherein the total heating power of the first heating group 2121 is greater than the total heating power of the second heating group 2122, i.e. the curie temperature of the first heating group 2121 is greater than the curie temperature of the second heating group 2122.

In some embodiments, as shown in fig. 1 and 2, a temperature controller 29 is disposed on the second pipeline 23, the temperature controller 29 is electrically connected to all the heating groups, and the temperature controller 29 is electrically connected to the controller. The temperature controller 29 can acquire the temperature information of the domestic water heated in the second pipeline 23, and the heating power of the plurality of heating groups in the second electric heating assembly 212 is adjusted according to the acquired temperature information of the domestic water, so as to ensure that the temperature of the domestic water in the second pipeline 23 meets the use requirement.

In some embodiments, as shown in fig. 1 and 2, the first heating group 2121 and the second heating group 2122 are connected in parallel between the first electrical heating assembly 211 and the first outlet 215. During operation, when the domestic water inlet pipe 11 conveys domestic water to the first electric heating component 211, a rapid temperature rise effect is achieved, then the domestic water flows to the first heating component 2121 and the second heating component 2122 through the first electric heating component 211 respectively, a secondary heating effect is achieved, the water flow speed of the domestic water is improved, the first heating component 2121 and the second heating component 2122 work simultaneously, the time for producing hot water is shortened, the domestic water in the first heating component 2121 and the domestic water in the second heating component 2122 are converged at the first outlet 215, a temperature balance effect is achieved, temperature control is more accurate, and when the temperature reaches a preset temperature, the first electric heating component 211 stops working and is heated by the second electric heating component 212. The zero cold water function can be achieved by the first water pump 25 and the third pipe 24. It should be noted that, the heating of the domestic water to the preset temperature by the first heating set 2121 and the second heating set 2122 is the prior art, and the working principle thereof is not described here again.

In other embodiments, all heating groups are connected in series between the first electrical heating assembly 211 and the first outlet 215, and the total heating power of the heating groups gradually decreases in the water flow direction, i.e., the total heating power of the first heating group 2121 is greater than the total heating power of the second heating group 2122. When the living water flows through the second electric heating assembly 212 from the first electric heating assembly 211, the living water flows through the first heating group 2121 and the second heating group 2122 in sequence, the first heating group 2121 heats the living water secondarily, and the second heating group 2122 plays a role in temperature balance.

In some embodiments, each heating group comprises a plurality of PTC ceramic heating bodies, so that heating efficiency is improved. Further, each heating group comprises at least two PTC ceramic heating bodies with different heating powers, so that multi-stage adjustment of the heating powers of the heating groups is realized.

As shown in fig. 3, in the present embodiment, the first heating group 2121 includes a first PTC ceramic heater 21211 and a second PTC ceramic heater 21212 of different powers, and the second heating group 2122 includes a third PTC ceramic heater 21221 and a fourth PTC ceramic heater 21222 of different powers. Wherein, the power of the second PTC ceramic heater 21212 is greater than the power of the first PTC ceramic heater 21211, the power of the first PTC ceramic heater 21211 is greater than the power of the fourth PTC ceramic heater 21222, and the power of the fourth PTC ceramic heater 21222 is greater than the power of the third PTC ceramic heater 21221. The first PTC ceramic heater 21211, the second PTC ceramic heater 21212, the third PTC ceramic heater 21221, and the fourth PTC ceramic heater 21222 are all heated by PTC heating sheets, which is a prior art.

The second electric heating assembly 212 is provided with five gears, namely five gears, four gears, three gears, two gears and one gear in sequence from the higher power to the lower power. When the electric heating system 2 enters the working mode, the second electric heating assembly 212 is started under five-gear full power, namely the first PTC ceramic heater 21211, the second PTC ceramic heater 21212, the third PTC ceramic heater 21221 and the fourth PTC ceramic heater 21222 work simultaneously. When the temperature controller 29 detects that the temperature of the living water in the second pipeline 23 is equal to the set target temperature, the gear is kept unchanged; when the temperature controller 29 detects that the temperature of the living water in the second pipe 23 is higher than the set target temperature, one gear is lowered, and at this time, four gears are used, and at the time of four gears, the second PTC ceramic heater 21212 and the fourth PTC ceramic heater 21222 operate simultaneously. When the temperature controller 29 detects that the temperature of the living water in the second pipeline 23 is equal to the set target temperature, the gear is kept unchanged; when the temperature controller 29 detects that the temperature of the living water in the second pipe 23 is higher than the set target temperature, one gear is lowered, and three gears are used at this time, and the second PTC ceramic heater 21212 and the third PTC ceramic heater 21221 operate simultaneously in the three gears. When the temperature controller 29 detects that the temperature of the living water in the second pipeline 23 is equal to the set target temperature, the gear is kept unchanged; when the temperature controller 29 detects that the temperature of the living water in the second pipe 23 is higher than the set target temperature, the first gear is lowered, and at this time, the second gear is shifted, and at the time of the second gear, the first PTC ceramic heater 21211 and the fourth PTC ceramic heater 21222 operate simultaneously. When the temperature controller 29 detects that the temperature of the living water in the second pipeline 23 is equal to the set target temperature, the gear is kept unchanged; when the temperature controller 29 detects that the temperature of the living water in the second pipe 23 is higher than the set target temperature, one gear is lowered, and at this time, the first PTC ceramic heater 21211 and the third PTC ceramic heater 21221 operate simultaneously at the time of the first gear. When the temperature controller 29 detects that the temperature of the living water in the second pipe 23 is equal to the set target temperature, the gear is kept unchanged.

In some embodiments, the second electrical heating assembly 212 downshifts/upshifts two gears when the thermostat 29 detects that the temperature of the fresh water in the second conduit 23 differs from the set target temperature by 5 ℃.

In some embodiments, the first electrical heating assembly 211 is turned off when the thermostat 29 detects that the temperature of the fresh water in the second conduit 23 is less than the set target temperature of 2 ℃; the first heating group 2121 is turned off when the temperature controller 29 detects that the temperature of the living water in the second pipe 23 is greater than the set target temperature 2 c, and the first heating group 2121 and the second heating group 2122 are turned off when the temperature controller 29 detects that the temperature of the living water in the second pipe 23 is greater than the set target temperature 5 c.

Further, as shown in fig. 1, the wall-mounted boiler 1 further comprises a burner 13, a fuel gas proportional valve 14, a fume collecting hood 15, a main heat exchanger 16, a plate heat exchanger 17, a heating water inlet pipe 18, a heating water outlet pipe 19, a second water pump 101 and a third three-way valve 102, wherein the second water pump 101 is arranged on the plate heat exchanger 17, the second water pump 101 provides power for heating water, one end of the main heat exchanger 16 is communicated with the heating water inlet pipe 18, the other end is communicated with the heating water outlet pipe 19, the main heat exchanger 16 utilizes high-temperature flue gas generated by the burner 13 and the fume collecting hood 15 to exchange heat, the plate heat exchanger 17 is provided with a first heat exchange channel and a second heat exchange channel, two ends of the first heat exchange channel are respectively communicated with the heating water inlet pipe 18 and the heating water outlet pipe 19, the third three-way valve 102 is arranged between the first heat exchange channel and the heating water outlet pipe 19, the third three-way valve 102 can control heating water to flow out of the hot water system through the heating water outlet pipe 19 or control heating water in the heating water outlet pipe 19 to flow into the first heat exchange channel, and two ends of the second heat exchange channel are respectively communicated with the domestic water inlet pipe 11 and the domestic water outlet pipe 12. The wall-mounted boiler 1 is a prior art.

In some embodiments, a first switching device is arranged between the domestic water inlet pipe 11 and the first pipeline 22, and the first pipeline 22 selectively communicates with the domestic water inlet pipe 11 through the first switching device; and/or the domestic water outlet pipe 12 and the second pipeline 23 are provided with a second switching device, and the second pipeline 23 is selectively communicated with the domestic water outlet pipe 12 through the second switching device.

In some embodiments, the life water inlet pipe 11 is further provided with a water pump (not shown in the figure), and the water pump and the first switching device are arranged in sequence along the water flow direction.

Further, as shown in fig. 1 and 4, the first switching device includes a first three-way valve 271, the first three-way valve 271 is provided on the running water inlet pipe 11, and the first inlet 213 communicates with one of the ports of the first three-way valve 271; the first three-way valve 271 can control the flow of the domestic water in the domestic water inlet pipe 11 into the first pipeline 22 or control the flow of the domestic water in the domestic water inlet pipe 11 into the second heat exchange passage. Or the first switching device comprises a second electromagnetic valve 272 and a third electromagnetic valve 273, the second electromagnetic valve 272 is arranged on the first pipeline 22, a first communication position is arranged between the first pipeline 22 and the domestic water inlet pipe 11, the third electromagnetic valve 273 is arranged on the domestic water inlet pipe 11, and the third electromagnetic valve 273 is positioned between the first communication position and the wall-mounted boiler 1. When the second electromagnetic valve 272 is opened and the third electromagnetic valve 273 is closed, the domestic water in the domestic water inlet pipe 11 can be controlled to flow into the first pipeline 22; when the second electromagnetic valve 272 is closed and the third electromagnetic valve 273 is opened, the domestic water in the domestic water inlet pipe 11 is controlled to enter the second heat exchange channel.

The second switching device comprises a second three-way valve 281, the second three-way valve 281 is arranged on the living water outlet pipe 12, and the second inlet 214 is communicated with one of the ports of the second three-way valve 281; the second three-way valve 281 can control the living water in the second pipeline 23 to flow into the living water outlet pipe 12 and be delivered to the user end 26, or control the living water in the second heat exchange channel to be delivered to the user end 26 through the living water outlet pipe 12. Or the second switching device comprises a fourth electromagnetic valve 282 and a fifth electromagnetic valve 283, the fourth electromagnetic valve 282 is arranged on the second pipeline 23, a second communication position is arranged between the second pipeline 23 and the domestic water outlet pipe 12, the fifth electromagnetic valve 283 is arranged on the domestic water outlet pipe 12, and the fifth electromagnetic valve 283 is positioned between the second communication position and the wall-mounted boiler 1. When the fourth electromagnetic valve 282 is opened and the fifth electromagnetic valve 283 is closed, the running water in the second pipeline 23 can be controlled to flow into the running water outlet pipe 12 and be conveyed to the user end 26; when the fourth electromagnetic valve 282 is closed and the fifth electromagnetic valve 283 is opened, the domestic water in the second heat exchange channel is controlled to be delivered to the user end 26 through the domestic water outlet pipe 12.

It should be noted that the first switching device and the second switching device have the following combination forms:

first combination form: the first switching device includes a first three-way valve 271, and no second switching device is provided;

second combination form: the first switching device includes a second solenoid valve 272 and a third solenoid valve 273, and no second switching device is provided;

third combination form: the first switching device is not provided, and the second switching device includes a second three-way valve 281;

fourth combination form: the first switching device is not provided, and the second switching device includes a fourth solenoid valve 282 and a fifth solenoid valve 283;

fifth combination form: the first switching device comprises a first three-way valve 271 and the second switching device comprises a second three-way valve 281;

sixth combination form: the first switching device includes a first three-way valve 271, and the second switching device includes a fourth solenoid valve 282 and a fifth solenoid valve 283;

seventh combination form: the first switching device includes a second solenoid valve 272 and a third solenoid valve 273, and the second switching device includes a second three-way valve 281;

eighth combination form: the first switching device includes a second solenoid valve 272 and a third solenoid valve 273, and the second switching device includes a fourth solenoid valve 282 and a fifth solenoid valve 283.

The present embodiment adopts a fifth combination form.

The hot water system comprises four working modes, and specifically comprises the following steps:

operation mode one: the wall-mounted boiler 1 is adopted for heating, the third three-way valve 102 is switched to the state that heating water flows out of the hot water system through the heating water outlet pipe 19, the second water pump 101 drives the heating water in the heating water inlet pipe 18 to enter the main heat exchanger 16, fuel gas enters the combustion chamber through the fuel gas proportional valve 14, high-temperature flue gas generated after fuel gas combustion exchanges heat through fins on the main heat exchanger 16, the heating water in the main heat exchanger 16 flows out of the heating water outlet pipe 19 after being heated, and finally flows to the heating tail end to provide heating hot water for a user.

And a second working mode: the wall-mounted boiler 1 is adopted to perform a bathroom function, the heating water in the heating water outlet pipe 19 is switched to flow into the first heat exchange channel by the third three-way valve 102, the domestic water in the domestic water inlet pipe 11 is switched to enter the second heat exchange channel by the first three-way valve 271, and the domestic water in the second heat exchange channel is switched to be conveyed to the user end 26 through the domestic water outlet pipe 12 by the second three-way valve 281. The heated heating water flows from the heating water outlet pipe 19 to the first heat exchange channel of the plate heat exchanger 17, the domestic water flows from the domestic water inlet pipe 11 to the second heat exchange channel of the plate heat exchanger 17 through the first three-way valve 271, after heat transfer is performed between the heating water and the domestic water in the plate heat exchanger 17, the heated domestic water flows from the domestic water outlet pipe 12, and the heating water flows back to the heating water inlet pipe 18.

And a third working mode: the electric heating system 2 is adopted to perform a bathroom function, the first three-way valve 271 is switched to enable domestic water in the domestic water inlet pipe 11 to flow into the first pipeline 22, the second three-way valve 281 is switched to enable domestic water in the second pipeline 23 to flow into the domestic water outlet pipe 12 and be conveyed to the user end 26, in this mode, the domestic water does not flow into the wall-mounted boiler 1, the domestic water flows into the first electric heating component 211 from the first pipeline 22 through the first three-way valve 271, and the first electric heating component 211 heats the domestic water for the first time to perform a preheating function. Then flows through the first heating group 2121 and the second heating group 2122 to be secondarily heated and finally is directly used by a user.

And a fourth working mode: the electric heating system 2 is adopted to perform a bathroom function, the wall-mounted boiler 1 is adopted to perform a heating function, the bathroom function and the heating function are performed simultaneously, and the use experience of a user is improved.

According to the embodiment, through the combination of the wall-mounted boiler 1 and the electric heating system 2, dual-energy hot water supply is realized, different energy systems can be utilized for simultaneously working by the hot water system, and a single energy system can also be independently used for working. The water heating system can use the wall-mounted boiler 1 for heating in a large area for a long time, can also use low-price electricity in a valley period, and realizes the bathroom function by adopting the electric heating system 2. The second electric heating assembly 212 has a multi-stage adjusting function, and the balance stage of the second electric heating assembly 212 under the current water temperature condition is judged by the temperature of the water generated in the second pipeline 23, so that the heating requirement is realized with the lowest energy consumption.

Note that the above is only a preferred embodiment of the present utility model and the technical principle applied. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.

Claims (10)

1. The utility model provides a hot water system, includes hanging stove (1), hanging stove (1) are connected with living water inlet tube (11) and living water outlet pipe (12), its characterized in that, hot water system still includes electric heating system (2), electric heating system (2) include:

the electric heating device (21), the electric heating device (21) comprises a first inlet (213), a second inlet (214) and a first outlet (215), the first inlet (213) is communicated with the domestic water inlet pipe (11) through a first pipeline (22), the first outlet (215) is communicated with the domestic water outlet pipe (12) through a second pipeline (23), the second inlet (214) is communicated with the domestic water outlet pipe (12) through a third pipeline (24), and a first water pump (25) is arranged on the third pipeline (24);

and the electric heating device (21) and the first water pump (25) are electrically connected with the controller.

2. The water heating system according to claim 1, characterized in that a first switching device is arranged between the domestic water inlet pipe (11) and the first pipeline (22), through which first switching device the first pipeline (22) is selectively connected to the domestic water inlet pipe (11); and/or

A second switching device is arranged between the domestic water outlet pipe (12) and the second pipeline (23), and the second pipeline (23) is selectively communicated with the domestic water outlet pipe (12) through the second switching device.

3. The water heating system according to claim 1, wherein a first solenoid valve (200) is arranged between the second inlet (214) and the first water pump (25), the first solenoid valve (200) being electrically connected to the controller.

4. The water heating system according to claim 2, wherein the first switching device comprises a first three-way valve (271), the first three-way valve (271) being arranged on the domestic water inlet pipe (11), the first inlet (213) being in communication with one of the ports of the first three-way valve (271);

the second switching device comprises a second three-way valve (281), the second three-way valve (281) is arranged on the domestic water outlet pipe (12), and the second inlet (214) is communicated with one of the ports of the second three-way valve (281).

5. The water heating system according to claim 2, wherein the first switching device comprises a second solenoid valve (272) and a third solenoid valve (273), the second solenoid valve (272) is arranged on the first pipeline (22), a first communication position is arranged between the first pipeline (22) and the domestic water inlet pipe (11), the third solenoid valve (273) is arranged on the domestic water inlet pipe (11), and the third solenoid valve (273) is positioned between the first communication position and the wall-hanging stove (1);

the second switching device comprises a fourth electromagnetic valve (282) and a fifth electromagnetic valve (283), the fourth electromagnetic valve (282) is arranged on the second pipeline (23), a second communication position is arranged between the second pipeline (23) and the domestic water outlet pipe (12), the fifth electromagnetic valve (283) is arranged on the domestic water outlet pipe (12), and the fifth electromagnetic valve (283) is arranged between the second communication position and the wall-mounted boiler (1).

6. The water heating system according to claim 1, wherein a temperature sensor (201) is provided on the third pipe (24), the temperature sensor (201) being electrically connected to the controller.

7. The water heating system according to any one of claims 1-6, wherein the electric heating device (21) comprises a first electric heating assembly (211) and a second electric heating assembly (212) connected in series in sequence between the first inlet (213) and the first outlet (215) through a pipeline, the second inlet (214) being arranged on the first electric heating assembly (211), the heating power of the second electric heating assembly (212) being adjustable.

8. The water heating system according to claim 7, wherein the first electric heating assembly (211) comprises a heating tube and a heating wire wound around the heating tube, the heating tube being connected in series between the first inlet (213) and the second electric heating assembly (212), the second inlet (214) being in communication with the heating tube.

9. The water heating system according to claim 7, wherein the second electric heating assembly (212) comprises at least two heating groups of different total heating power, each of which can be individually controlled on and off, all of which are connected in series or in parallel between the first electric heating assembly (211) and the first outlet (215) by means of a pipe.

10. The water heating system according to claim 9, wherein a temperature controller (29) is provided on the second pipeline (23), the temperature controller (29) is electrically connected to all the heating groups, and the temperature controller (29) is electrically connected to the controller.