CN111043753A

CN111043753A - Water heating stove

Info

Publication number: CN111043753A
Application number: CN201911248453.5A
Authority: CN
Inventors: 于占伟; 马曾文; 李良潭
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2019-12-09
Filing date: 2019-12-09
Publication date: 2020-04-21

Abstract

The invention relates to the technical field of water heaters, and particularly provides a water heater, which comprises: the inlet end of the first heat exchanger is communicated with a first water return pipe, and the outlet end of the first heat exchanger is communicated with a first water outlet pipe; the inlet end of the first shunt controller is communicated with the first water outlet pipe, and the outlet end of the first shunt controller and the first water return pipe are communicated with a heating loop; the inlet end of the second heat exchanger is communicated with the other outlet end of the first flow dividing controller; and the inlet end of the second shunt controller is communicated with the outlet end of the second heat exchanger, one outlet end of the second shunt controller is communicated with a pipeline for communicating one outlet end of the first shunt controller with the heating loop, the other outlet end of the second shunt controller is communicated with a domestic water heat exchange system, and the outlet end of the domestic water heat exchange system is communicated with a pipeline for communicating the other outlet end of the first shunt controller with the second heat exchanger. The water heater can realize the simultaneous work of heating and domestic hot water, and has higher utilization rate.

Description

Water heating stove

Technical Field

The invention relates to the technical field of water heaters, in particular to a water heater.

Background

The water heater is a common heat exchange device, taking a household gas wall-mounted boiler as an example, the existing household mostly adopts a wall-mounted boiler with dual purposes of domestic hot water and heating hot water, and although the wall-mounted boiler can realize the functions of providing heating hot water and domestic hot water, the wall-mounted boiler cannot provide heating hot water and domestic hot water at the same time. That is, when heating is started, water heated in the main heat exchanger enters the heating circulation system, and domestic hot water cannot be produced at this time. When the domestic hot water is started, in order to ensure the preferential supply of the domestic hot water, the water heated in the main heat exchanger enters the domestic hot water circulating system, so that the supply of the heating system is cut off. For families with more members in winter, the room temperature is greatly reduced frequently due to the fact that the hot water function is used more and the using time is long, and the comfort is greatly influenced.

In order to solve the problems, the prior art provides a wall-mounted boiler with two combustion systems, wherein two combustion systems for hot water supply and heating combustion are arranged inside the wall-mounted boiler, and a user can independently open one combustion system or simultaneously open two combustion systems according to needs, so that the domestic hot water and heating can be simultaneously used. However, the two sets of systems of the wall-mounted boiler are mutually independent, when a user only uses one function, the system with the other function is completely shut down, for example, when only the heating function is started, a domestic hot water system is in an idle and waste state for a long time, and the utilization rate of the wall-mounted boiler is low.

Disclosure of Invention

In order to solve the technical problem that the wall-mounted boiler of the existing double-combustion system is low in utilization rate, the invention provides the water heater which is high in utilization rate and can simultaneously supply heat and live hot water.

The invention provides a water heater, comprising:

the inlet end of the first heat exchanger is communicated with a first water return pipe, and the outlet end of the first heat exchanger is communicated with a first water outlet pipe;

the inlet end of the first shunt controller is communicated with the first water outlet pipe, and the outlet end of the first shunt controller and the first water return pipe are communicated with a heating loop;

the inlet end of the second heat exchanger is communicated with the other outlet end of the first flow dividing controller;

and the inlet end of the second shunt controller is communicated with the outlet end of the second heat exchanger, one outlet end of the second shunt controller is communicated with a pipeline for communicating one outlet end of the first shunt controller with the heating loop, the other outlet end of the second shunt controller is communicated with a domestic water heat exchange system, and the outlet end of the domestic water heat exchange system is communicated with a pipeline for communicating the other outlet end of the first shunt controller with the second heat exchanger.

In some embodiments, the domestic water heat exchange system comprises:

and a first medium inlet end of the third heat exchanger is communicated with the other outlet end of the second flow dividing controller, a first medium outlet end of the third heat exchanger is communicated with a pipeline on which the other outlet end of the first flow dividing controller is communicated with the second heat exchanger, and a second medium inlet end and a second medium outlet end of the third heat exchanger are communicated with a domestic water pipeline.

In some embodiments, the water heater further comprises:

the first circulating pump is arranged on the first water return pipe; and

and the second circulating pump is arranged on a pipeline communicated with the first medium outlet end and the first flow dividing controller at the inlet end of the second heat exchanger.

In some embodiments, the first flow diverter and the second flow diverter are three-way valves.

In some embodiments, the first heat exchanger and the second heat exchanger are both gas heaters, the first heat exchanger comprises a first gas valve and a first burner which are communicated with each other in a gas path, the second heat exchanger comprises a second gas valve and a second burner which are communicated with each other in a gas path, and inlet ends of the first gas valve and the second gas valve are communicated with a gas supply pipeline.

In some embodiments, the water heater further comprises a fan and a smoke collecting hood disposed above the first heat exchanger and the second heat exchanger.

In some embodiments, the third heat exchanger is a plate heat exchanger.

In some embodiments, the water heater further comprises:

and the first temperature sensor is arranged on a pipeline communicated with the first flow dividing controller and the first heat exchanger.

In some embodiments, the water heater further comprises:

the second temperature sensor is arranged on a pipeline which is communicated with the second flow dividing controller by the second heat exchanger; and

and the third temperature sensor is arranged on the first water return pipe.

In some embodiments, the second medium inlet end is communicated with a domestic water supply pipeline, and the second medium outlet end is communicated with a domestic water end.

The water heater provided by the invention comprises the first heat exchanger and the second heat exchanger, and realizes simultaneous use of heating and domestic hot water through two heat exchange systems. The inlet end of the first heat exchanger is communicated with a first return pipe, the outlet end of the first heat exchanger is communicated with a first water outlet pipe, the inlet end of the first shunt controller is communicated with the first water outlet pipe, the outlet end of the first shunt controller and the first return pipe are communicated with a heating loop, the other outlet end of the first shunt controller is communicated with the inlet end of the second heat exchanger, the inlet end of the second shunt controller is communicated with the outlet end of the second heat exchanger, the outlet end of the second shunt controller is communicated with a pipeline, communicated with the heating loop, of the outlet end of the first shunt controller, the other outlet end of the second shunt controller is communicated with a domestic water heat exchange system, and the outlet. Through first shunt controller and second shunt controller with two heat transfer system connections, two heat exchangers can participate in heating system's heat transfer simultaneously, avoid the system idle for a long time, improve the utilization ratio, improve heating system's heating power and heat transfer effect simultaneously.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic view of a hot water boiler according to some embodiments of the present invention.

Description of reference numerals:

1-a first water return pipe; 2-a first water outlet pipe; 10-a first heat exchanger; 11-a first gas valve; 12-a first burner; 20-a second heat exchanger; 21-a second fuel valve; 22-a second burner; 30-a third heat exchanger; 31-a first media inlet end; 32-a first medium outlet end; 33-a second media inlet end; 34-a second medium outlet end; 40-a first shunt controller; 50-a second shunt controller; 60-a first circulation pump; 70-a second circulation pump; 71-a first temperature sensor; 72-a second temperature sensor; 73-a third temperature sensor; 80-smoke collecting hood; and 90, a fan.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some examples of the present invention, but not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The water heater provided by the invention can be used for heat exchange equipment of the water heater, such as a household wall-mounted furnace, a heating furnace and the like, and can realize the simultaneous supply of heating and domestic hot water. A hot water boiler structure according to some embodiments of the present invention is shown in fig. 1.

As shown in fig. 1, in some embodiments, the water heater provided by the present invention includes a first heat exchanger 10, a second heat exchanger 20, a domestic water heat exchange system, a circulation pipeline, and the like, where the first heat exchanger 10 and the second heat exchanger 20 serve as main heat exchangers of a dual-system water heater to provide heat for circulating water of the water heater. In some embodiments shown in fig. 1, each of the first heat exchanger 10 and the second heat exchanger 20 employs a gas heater, the first heat exchanger 10 includes a first gas valve 11 and a first burner 12 which are communicated with each other via a gas path, the second heat exchanger 20 includes a second gas valve 21 and a second burner 22 which are communicated with each other via a gas path, the first gas valve 11 and the second gas valve 21 may employ existing gas proportional valves, the gas inlet ends of the first gas valve 11 and the second gas valve 21 communicate with a gas supply pipeline, the gas outlet ends communicate with the first burner 12 and the second burner 22 respectively, and the gas proportional valves may provide different combustion powers by controlling the ratio and flow rate of the gas inlet amount of natural gas and the air inlet amount. The first combustor 12 and the second combustor 22 adopt a combustion fire row composed of a plurality of fire holes, and different combustion powers can be controlled by controlling the combustion number of the combustion fire row. In some embodiments, a smoke collecting hood 80 and a fan 90 are disposed above the first heat exchanger 10 and the second heat exchanger 20 to discharge smoke generated after combustion.

The inlet end of the first heat exchanger 10 is communicated with a first return pipe 1, the outlet end of the first heat exchanger is communicated with a first water outlet pipe 2, the other end of the first water outlet pipe 2 is communicated with a first shunt controller 40, the first shunt controller 40 is suitable for dividing the water inlet of the first water outlet pipe 2 into two paths and respectively controlling the flow or the on-off of the two outlet ends, and one of the outlet ends of the first shunt controller 40 and the first return pipe 1 are communicated with a heating loop. Therefore, circulating water flows into the first heat exchanger 10 through the first water return pipe 1 and flows out of the first water outlet pipe 2 after being heated, heated high-temperature water enters the heating loop through one of the outlet ends of the first flow divider 40, and low-temperature water after exchanging heat with the indoor environment flows back to the first water return pipe 1 to participate in next circulation, so that complete heating circulation is realized.

The inlet end of the second heat exchanger 20 is communicated with the other outlet end of the first shunt controller 40, the outlet end of the second heat exchanger 20 is communicated with the inlet end of the second shunt controller 50, and the second shunt controller 50 is suitable for dividing the high-temperature water flowing out of the second heat exchanger 20 into two paths and controlling the flow or the on-off of the two outlet ends. One of the outlet ends of the second flow divider 50 is connected to a pipe where one of the outlet ends of the first flow divider 40 is connected to the heating circuit, that is, the high temperature water flowing out through one of the outlet ends of the second flow divider 50 enters the heating circuit to participate in heating heat exchange. And the other outlet end of the second shunt controller 50 is communicated with the domestic water heat exchange system, so that the high-temperature water flowing out of the other outlet end of the second shunt controller 50 enters the domestic water heat exchange system to provide heat exchange for the bathroom.

As shown in fig. 1, the domestic water heat exchange system comprises a third heat exchanger 30, an inlet end of the third heat exchanger 30 is communicated with the other outlet end of the second flow divider 50, and an outlet end of the third heat exchanger 30 is communicated with a pipeline through which the first flow divider 40 is communicated with the second heat exchanger 20, so that a domestic water heat exchange cycle is formed. In the present embodiment, the third heat exchanger 30 is a plate heat exchanger, the first medium inlet end 31 of the plate heat exchanger is communicated with the other outlet end of the second flow divider 50, the first medium outlet end 32 is communicated with the other outlet end of the first flow divider 40, the second medium inlet end 33 is communicated 33 and the second medium outlet end 34 is communicated with a pipeline of domestic water, for example, the second medium inlet end 33 is communicated with a tap water supply pipe, and the second medium outlet end 34 is communicated with a hot water using end.

In some embodiments, the first and

second flow splitters

40 and 50 are in a three-way valve configuration, such as an electric three-way regulator valve or the like. It should be noted that, in other embodiments, the first shunt controller 40 and the second shunt controller 50 may also adopt any other element or component suitable for achieving the shunt, for example, the first shunt controller 40 may also adopt two electric two-way valves, which are respectively disposed on two shunts and control the flow rate or on/off of each shunt, and the second shunt controller 50 is similar to this, but the present invention is not limited to this.

As shown in fig. 1, in some embodiments, the water heater further includes a first circulation pump 60 and a second circulation pump 70, the first circulation pump 60 is disposed on the pipeline of the first water return pipe 1, and the first circulation pump 60 powers the circulation pipeline of the first heat exchanger 10. The second circulation pump 70 is disposed on the pipeline connecting the first flow divider 40 and the second heat exchanger 20, and has an inflow end connected to the first medium outlet end 32 and an outlet end of the first flow divider 40, respectively, and an outflow end connected to the inlet end of the second heat exchanger 20, so as to provide power for the circulation pipeline of the second heat exchanger 20.

In some embodiments, the water heater of the present invention further includes a first temperature sensor 71, a second temperature sensor 72, and a third temperature sensor 73, wherein the first temperature sensor 71 is disposed on a pipeline of the first heat exchanger 10 communicating with the first bypass controller 40, so as to detect the temperature of the water heated by the first heat exchanger 10. The second temperature sensor 72 is provided on a pipe where the second heat exchanger 20 communicates with the second flow divider 50, and detects the temperature of the water heated by the second heat exchanger 20. The third temperature sensor 73 is provided on the first return water pipe 1, thereby detecting the return water temperature.

While the structure of the water heater of the present invention has been described above, other alternative embodiments of the water heater of the present invention may be provided on the basis of the above-described embodiments. In some alternative embodiments, the first heat exchanger 10 and the second heat exchanger 20 are not limited to gas heaters, and any other suitable device may be used, for example, the first heat exchanger 10 and the second heat exchanger 20 may also be electric heating devices, and the third heat exchanger 30 may also be other heat exchange devices, and the invention is not limited thereto.

The structure of the hot water boiler according to some embodiments of the present invention is described above, and the operation of the hot water boiler according to the present invention is described with reference to fig. 1.

When the water heater independently uses the heating function, the water heater can be divided into a single combustion system work and a double combustion system work, when the single combustion system works, the water heater provides low-power heating for the heating loop, and when the double combustion system works, the water heater provides high-power heating for the heating loop. When a single combustion system is adopted for working, the first shunt controller 40 is controlled to be communicated with the outlet end of the second heat exchanger 20 to be disconnected, the second fuel gas valve 21 is disconnected, fuel gas enters the first combustor 12 through the first fuel gas valve 11 for combustion and heating, the first circulating pump 60 works, heating return water enters the first heat exchanger 10 through the first return water pipe 1 for heating, heated high-temperature water flows out through the first water outlet pipe 2 and enters a heating loop after flowing through the first shunt controller 40 to provide heat exchange for environmental heating, and heating water after heat exchange is completed flows back to the first return water pipe 1, so that heating circulation is formed. When the single combustion system cannot meet the heating requirement, double combustion systems are adopted for heating, when the double combustion systems work, the first circulating pump 60 and the second circulating pump 70 work simultaneously, the first gas valve 11 and the second gas valve 21 are both in a communicated state, at the moment, the first combustor 12 and the second combustor 22 burn and heat simultaneously, the first shunt controller 40 is disconnected from the outlet end communicated with the heating loop and communicated with the outlet end communicated with the second heat exchanger 20, and the second shunt controller 50 is disconnected from the outlet end communicated with the third heat exchanger 30 and communicated with the outlet end communicated with the heating loop. At this time, the heating backwater enters the first heat exchanger 10 through the first backwater pipe 1 for heating, the heated high-temperature water enters the second heat exchanger 20 for secondary heating after passing through the first shunt controller 40, the high-temperature water after secondary heating flows into the heating loop after passing through the second shunt controller 50 to provide more powerful heat exchange for environmental heating, and the heating water after heat exchange is completed flows back to the first backwater pipe 1, so that high-power heating circulation is formed. Therefore, the water heater can link the domestic hot water system and the heating system under the condition of not using the domestic hot water function, simultaneously supplies heat for heating, avoids the domestic hot water system from being idle for a long time, improves the resource utilization rate, and can provide a higher-power heating effect.

When the water heater provides domestic hot water and heating functions at the same time, the outlet end of the first shunt controller 40 communicated with the second heat exchanger 20 is disconnected and communicated with the outlet end of the heating loop, the outlet end of the second shunt controller 50 communicated with the heating loop is disconnected and communicated with the outlet end of the third heat exchanger 30, the first gas valve 11 and the second gas valve 21 are both in a communicated state, at the moment, the first combustor 12 and the second combustor 22 are simultaneously combusted and heated, and the first circulating pump 60 and the second circulating pump 70 are simultaneously operated. At this time, heating backwater enters the first heat exchanger 10 through the first backwater pipe 1 for heating, heated high-temperature water enters the heating loop through the first shunt controller 40 to provide heat exchange for environmental heating, and the heating backwater after heat exchange flows into the first backwater pipe 1 to complete heating heat exchange circulation. The second circulation pump 70 provides power for the pipeline, the domestic circulating water enters the second heat exchanger 20 through the second circulation pump 70 for heating, the heated high-temperature water enters the first medium inlet end 31 of the third heat exchanger 30 through the second flow divider 50, then flows back to the inflow end of the second circulation pump 70 through the first medium outlet end 32 after heat exchange is completed in the third heat exchanger 30, the domestic hot water heat exchange circulation is completed, the low-temperature tap water enters the third heat exchanger 30 through the second medium inlet end 33, and flows into the domestic hot water end through the second medium outlet end after heat exchange is completed with the high-temperature circulating water in the heat exchanger, for example, bathing, kitchen hot water and the like.

When the water heater only provides domestic hot water, the outlet end of the first shunt controller 40 communicated with the heating loop, the outlet end of the second shunt controller 50 communicated with the heating loop, and the first gas valve 11 are all in the disconnected state, and the working principle is the same as that described above, and thus the detailed description thereof is omitted.

In some embodiments, the water heater of the present invention may further include a controller, wherein the controller is electrically connected to the temperature sensor, the shunt controller, and the gas valve, and may control different operation modes of the water heater by collecting the temperature of the sensor. For example, in one embodiment, when the heating function is provided, whether the water temperature is in the preset temperature range is determined by acquiring the water temperature collected by the first temperature sensor 71, when the water temperature is less than the preset temperature range, the controller controls the on/off of the first bypass controller 40 and the second bypass controller 50 to switch the water heater to the dual combustion system mode, and when the water temperature is greater than the preset temperature range, the controller controls the on/off of the first bypass controller 40 and the second bypass controller 50 to switch the water heater to the single combustion system mode. It should be noted that the connection relationship and the control principle in this embodiment may be implemented by conventional arrangements, and those skilled in the art may implement the technical solution of this embodiment on the basis of the foregoing disclosure, which is not described herein again.

It should be understood that the above embodiments are only examples for clearly illustrating the present invention, and are not intended to limit the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims

1. A water heater, comprising:

the inlet end of the first heat exchanger (10) is communicated with the first water return pipe (1), and the outlet end of the first heat exchanger is communicated with the first water outlet pipe (2);

the inlet end of the first shunt controller (40) is communicated with the first water outlet pipe (2), and the outlet end of the first shunt controller and the first water return pipe (1) are communicated with a heating loop;

a second heat exchanger (20) with an inlet end communicated with the other outlet end of the first shunt controller (40);

and the inlet end of the second shunt controller (50) is communicated with the outlet end of the second heat exchanger (20), one outlet end of the second shunt controller is communicated with a pipeline for communicating one outlet end of the first shunt controller (40) with the heating loop, the other outlet end of the second shunt controller is communicated with a domestic water heat exchange system, and the outlet end of the domestic water heat exchange system is communicated with a pipeline for communicating the other outlet end of the first shunt controller (40) with the second heat exchanger (20).

2. The water heater of claim 1, wherein the domestic water heat exchange system comprises:

and the first medium inlet end (31) of the third heat exchanger (30) is communicated with the other outlet end of the second flow dividing controller (50), the first medium outlet end (32) is communicated with a pipeline for communicating the other outlet end of the first flow dividing controller (40) with the second heat exchanger (20), and the second medium inlet end (33) and the second medium outlet end (34) are communicated with a domestic water pipeline.

3. The water heater of claim 2, further comprising:

the first circulating pump (60) is arranged on the first water return pipe (1); and

and the inflow end of the second circulating pump (70) is communicated with the first medium outlet end (32) and one outlet end of the first flow dividing controller (40), and the outflow end of the second circulating pump is communicated with the inlet end of the second heat exchanger (20).

4. The water heater according to any one of claims 1 to 3,

the first shunt controller (40) and the second shunt controller (50) are three-way valves.

5. The water heater of claim 1,

the first heat exchanger (10) and the second heat exchanger (20) are both gas heaters, the first heat exchanger (10) comprises a first gas valve (11) and a first combustor (12) which are communicated with each other through a gas path, the second heat exchanger (20) comprises a second gas valve (21) and a second combustor (22) which are communicated with each other through a gas path, and inlet ends of the first gas valve (11) and the second gas valve (21) are communicated with a gas supply pipeline.

6. The water heater according to claim 5,

the heat exchanger further comprises a fan (90) and a smoke collecting hood (80) which are arranged above the first heat exchanger (10) and the second heat exchanger (20).

7. The water heater according to claim 2,

the third heat exchanger (30) is a plate heat exchanger.

8. The water heater of claim 1, further comprising:

and the first temperature sensor (71) is arranged on a pipeline which is communicated with the first flow dividing controller (40) and the first heat exchanger (10).

9. The water heater of claim 7, further comprising:

the second temperature sensor (72) is arranged on a pipeline communicated with the second flow dividing controller (50) and the second heat exchanger (2); and

and a third temperature sensor (73) arranged on the first water return pipe (1).

10. The water heater according to claim 2,

the second medium inlet end (33) is communicated with a domestic water supply pipeline, and the second medium outlet end (34) is communicated with the tail end of domestic water.