CN211503217U

CN211503217U - Water heating stove

Info

Publication number: CN211503217U
Application number: CN201922192042.0U
Authority: CN
Inventors: 温林; 马曾文
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: 2020-09-15
Anticipated expiration: 2029-12-09

Abstract

The utility model relates to a indirect heating equipment field specifically provides a water heater, include: the inlet end of the first heat exchanger is communicated with a first water return pipe, the outlet end of the first heat exchanger is communicated with a first water outlet pipe, and one outlet end of the first water outlet pipe and the first water return pipe are both communicated with a heating loop; the inlet end of the water storage tank is communicated with the other outlet end of the first water outlet pipe, and the outlet end of the water storage tank is communicated with a domestic hot water heat exchange system; and the flow distribution controller is arranged at the outlet end of the water storage tank and on a pipeline communicated with the heating loop through one outlet end of the first water outlet pipe, and is used for respectively controlling the flow of the two pipelines. The utility model discloses a hot-water boiler effectively reduces the incrustation scale deposit that gets into the heat exchanger, is convenient for clean the incrustation scale of hot-water boiler system.

Description

Water heating stove

Technical Field

The utility model relates to a indirect heating equipment field, concretely relates to 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 above problems, a wall-mounted gas boiler is provided in the prior art, in which an electric three-way valve with an adjustable opening is disposed at a water outlet end of a main heat exchanger, and the opening of a heating pipeline and the opening of a hot water pipeline are adjusted to simultaneously supply a heating system and a hot water system. However, in the actual use process of the wall-mounted boiler, because the heat exchange system and the pipelines are more, the circulating water is easy to generate precipitates in the pipelines after being heated, and the precipitates are accumulated in the pipelines for a long time to form hard scales and are difficult to clean, so that the heat exchange efficiency of the wall-mounted boiler is reduced, and the use is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a water heater, which solves the technical problem that the scale of the existing water heater is difficult to clean and causes the reduction of the heat exchange efficiency.

The utility model provides a pair of water heater, include:

the inlet end of the first heat exchanger is communicated with a first water return pipe, the outlet end of the first heat exchanger is communicated with a first water outlet pipe, and one outlet end of the first water outlet pipe and the first water return pipe are both communicated with a heating loop;

the inlet end of the water storage tank is communicated with the other outlet end of the first water outlet pipe, and the outlet end of the water storage tank is communicated with a domestic hot water heat exchange system; and

and the shunt controller is arranged at the outlet end of the water storage tank and on a pipeline communicated with the heating loop through an outlet end of the first water outlet pipe, and is used for respectively controlling the flow of the two pipelines.

In some embodiments, the outlet end of the reservoir is provided with a filter screen.

In some embodiments, the water storage tank is detachably connected with the domestic hot water heat exchange system and the first water outlet pipe.

In some embodiments, the flow distribution controller comprises a first regulating valve and a second regulating valve, the first regulating valve is arranged on a pipeline of the outlet end of the water storage tank communicated with the domestic hot water heat exchange system, and the second regulating valve is arranged on a pipeline of the first water outlet pipe communicated with the heating loop.

In some embodiments, the domestic hot water heat exchange system comprises a second heat exchanger, a first medium inlet end of the second heat exchanger is communicated with the outlet end of the water storage tank, a first medium outlet end of the second heat exchanger is communicated with the first water return pipe, and a second medium inlet end and a second medium outlet end of the second heat exchanger are communicated with the domestic water pipeline.

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

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.

In some embodiments, a water pressure regulating valve is arranged on a pipeline of the second medium inlet end communicated with the domestic water supply pipeline.

In some embodiments, the first heat exchanger is a gas heater, which includes a gas valve and a burner, the gas valve being connected to a gas circuit, and the inlet end of the gas valve being connected to a gas supply system.

In some embodiments, the water heater further comprises:

the first temperature sensor is arranged on a pipeline of which one outlet end of the first water outlet pipe is communicated with the heating loop;

the second temperature sensor is arranged at the outlet end of the second medium; and

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

The technical scheme of the utility model, following beneficial effect has:

1) the utility model provides a water heater, including first heat exchanger, water storage box and shunt controller, the entry end of first heat exchanger communicates first return pipe, exit end intercommunication first outlet pipe, an exit end and first return pipe of first outlet pipe all communicate and the heating return circuit, heating is provided, another exit end of first outlet pipe communicates the water storage box, the exit end of water storage box communicates life hot water heat transfer system, life hot water heat transfer is provided, the shunt controller sets up the exit end at the water storage box, and on an exit end of first outlet pipe and the pipeline of heating return circuit intercommunication, and control the flow of two pipelines respectively, thereby realize using when heating and life hot water heat transfer. Through setting up the water storage box, the deposit of pipeline inner loop water deposits in the water storage box bottom through the deposition, avoids the deposit in heat exchanger or heating pipeline, is convenient for clear up the incrustation scale.

2) The utility model provides a water heater, the exit end of water storage box is equipped with the filter screen, filters the circulating water of outflow water storage box, further improves the filter effect to the incrustation scale, reduces the incrustation scale deposit in heat exchanger and pipeline.

3) The utility model provides a water heater, water storage box and life hot water heat transfer system and first outlet pipe can dismantle the connection to be convenient for clear up the water storage box, improve cleaning efficiency.

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 embodiments or the technical solutions in 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 for those skilled in the art, other drawings can be obtained according to these drawings 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 burner; 12-a gas valve; 20-a second heat exchanger; 21-a first media inlet end; 22-first medium outlet end; 23-a second media inlet end; 24-a second medium outlet end; 30-a water storage tank; 31-a first regulating valve; 32-a second regulating valve; 41-a first temperature sensor; 42-a second temperature sensor; 50-water pressure regulating valve; 60-circulating pump.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention. Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

The utility model provides a water heater can be used to water heater indirect heating equipment, for example domestic hanging stove, heating stove etc. can realize heating and life hot water and supply simultaneously. It should be noted that, in the use process of a general wall-mounted boiler, due to factors such as improper operation of water treatment equipment and substandard water quality control, unqualified soft water is injected into a circulating system, calcium, magnesium and carbonate in the water are decomposed into precipitates such as calcium carbonate and magnesium hydroxide after being heated, and the precipitates are deposited for a long time to form hard scale in the system and are particularly easy to deposit in a heat exchanger. Especially for the double-system wall-mounted furnace, more scale can be deposited in the heat exchanger due to the fact that the circulating water quantity is large and the circulating pipeline is connected. Taking the plate heat exchanger as an example, the multilayer plate structure of the plate heat exchanger is compact, and the heat exchange area is large, so that water scale is easier to deposit on the surface of the plate, and the long-term water scale deposition of the plate heat exchanger causes poor heat exchange efficiency. For cleaning the plate heat exchanger, the plate of the plate heat exchanger needs to be disassembled, and a series of operations such as acid washing, alkali washing, bleaching, neutralization and passivation are utilized to remove scales on the plate, so that the operation is very complicated, and the time is wasted. Based on this exactly, the utility model provides a water heater subsides the incrustation scale through the water storage box and gets rid of, reduces plate heat exchanger's incrustation scale deposit, is convenient for carry out the incrustation scale cleanness to the system simultaneously. A hot water furnace structure according to some embodiments of the present invention is shown in fig. 1.

As shown in fig. 1, in some embodiments, the present invention provides a water heater, including a first heat exchanger 10, a split-flow controller, a domestic hot water heat exchange system, a water storage tank 30, a circulation pipeline, etc., wherein the first heat exchanger 10 is a main heat exchanger of the water heater, and provides heat for circulating water of the water heater. The circulating pipeline comprises a first return pipe 1, and the first return pipe 1 is communicated with the inlet end of the first heat exchanger 10, so that return water of the circulating system enters the first heat exchanger 10 through the first return pipe 1 to be heated. The outlet end of the first heat exchanger 10 is communicated with the first water outlet pipe 2, and the high-temperature water heated by the first heat exchanger 10 flows out through the first water outlet pipe 2. The first water outlet pipe 2 is configured to have two outflow ends, one of which is communicated with the heating loop, so that the heated high-temperature water enters the heating system to participate in heat exchange, and the heat-exchanged return water flows into the first return water pipe 1. The other outlet end of the first water outlet pipe 2 is communicated with the water storage tank 30, the water storage tank 30 is of a box body structure, a cavity inside the box body is used for storing high-temperature water, and the outer wall of the box body is made of heat insulation materials, so that the box body is prevented from radiating outwards. The outlet end of the water storage tank 30 is communicated with a domestic heat exchange system, the heated high-temperature water flows into the domestic hot water heat exchange system through the water storage tank 30 to participate in heat exchange, and the circulating water after heat exchange flows back to the first water return pipe 1. The first water return pipe 1 is provided with a circulating pump 60, and the circulating pump 60 provides power for circulating water of the system. And a shunt controller is arranged on the pipeline of each heat exchange system, so that the flow of each system is controlled.

In the present embodiment, the first heat exchanger 10 is a gas heater, which may include a gas valve 12, a burner 11, a fan, a smoke collecting hood (not shown in the drawings), and the like, the gas valve 12 may be, for example, an existing gas proportional valve, an air inlet end of the gas valve 12 is communicated with a gas supply pipeline, an air outlet end of the gas valve 12 is communicated with the burner 11, and the gas valve 12 may provide different combustion powers by controlling an intake air amount ratio or a flow rate of natural gas and air. The burner 11 adopts a combustion fire row consisting of a plurality of fire holes, and different combustion powers can be realized by controlling the combustion number of the combustion fire row.

Hot water heated by the first heat exchanger 10 flows out through the first water outlet pipe 2, as shown in fig. 1, the first water outlet pipe 2 is internally configured to have two outlet ends, one of the outlet ends is communicated with a heating loop, high-temperature water flowing out through the first water outlet pipe 2 enters a heating pipeline at the downstream, the heating pipeline exchanges heat with indoor air of a user, so that the user is heated, and low-temperature water after heat exchange in the heating loop flows back to the first water return pipe 1, so that heating circulation heat exchange is realized. And the other outlet end is communicated with the water storage tank 30, the outlet end of the water storage tank 30 is communicated with the domestic hot water heat exchange system, the high-temperature water flowing out of the first water outlet pipe 2 participates in heat exchange through the domestic hot water heat exchange system, and flows back to the first water return pipe 1 after heat exchange, so that the domestic hot water circulation heat exchange is realized. Specifically, as shown in fig. 1, the domestic hot water heat exchange system includes a second heat exchanger 20, the second heat exchanger 20 may be a plate heat exchanger, a first medium inlet port 21 of the plate heat exchanger is communicated with an outlet port of the water storage tank 30, and a first medium outlet port 22 is communicated with the first return pipe 1, so that the high-temperature hot water flowing out of the water storage tank 30 flows back to the first return pipe 1 after participating in heat exchange by the second heat exchanger 20. The second medium inlet end 23 and the second medium outlet end 24 are communicated with a domestic hot water pipeline, for example, the second medium inlet end 23 can be communicated with a tap water supply pipeline, and the second medium outlet end 24 is communicated with a bathroom, a kitchen and the like at the tail end of the domestic hot water, so that the low-temperature domestic water enters the plate heat exchanger through the second medium inlet end 23, and the high-temperature domestic hot water after heat exchange enters the tail end of the life through the second medium outlet end 24, thereby providing the domestic hot water for bathing, washing and the like of a user.

In some embodiments, the flow dividing controller includes a first regulating valve 31 and a second regulating valve 32, and the first regulating valve 31 and the second regulating valve 32 can adopt, for example, an electromagnetic two-way regulating valve, and the control of the pipeline flow is realized by regulating the opening degree of the valves. As shown in fig. 1, the first regulating valve 31 is disposed on a pipeline connecting the outlet end of the water storage tank 30 and the first medium inlet port 21, so as to control the domestic hot water heat exchange system. The second regulating valve 32 is arranged on a pipeline of which one outlet end of the first water outlet pipe 2 is communicated with the heating loop, thereby realizing the control of the heating heat exchange system. The flow of the two pipelines is controlled by the first regulating valve 31 and the second regulating valve 32, so that the water supply temperature of the heating system and the domestic hot water system is respectively controlled. For example, when the water heater only provides the domestic hot water function, the second regulating valve 32 can be controlled to be completely closed, the first regulating valve 31 is opened, the heated high-temperature water completely enters the second heat exchanger 20 to participate in heat exchange, the domestic hot water is heated, and the heat exchange temperature of the domestic hot water is adjusted through the opening degree of the first regulating valve 31. When the water heater only provides a heating function, the first regulating valve 31 can be controlled to be completely closed, the second regulating valve 32 is controlled to be opened, the heated high-temperature water completely enters a heating loop, heat exchange is carried out at the tail end of heating such as a heating radiator, and the adjustment of the heat exchange temperature of the heating system is realized through the opening degree of the second regulating valve 32. When the water heater provides the heating function and the domestic hot water function simultaneously, the first regulating valve 31 and the second regulating valve 32 can be controlled to be opened simultaneously, the heated high-temperature water is divided into two paths, one path of water enters the second heat exchanger 20 to participate in domestic hot water heat exchange, the other path of water enters the heating heat exchange system to participate in heating heat exchange, double-system heat exchange circulation is realized, and the control of the heat exchange temperature of each path of system is realized by controlling the opening degrees of the first regulating valve 31 and the second regulating valve 32.

In the present embodiment, as shown in fig. 1, when the water heater only provides the domestic hot water function, the heated high-temperature water firstly enters the water storage tank 30, and the sediment generated after the circulating water is heated settles in the water storage tank 30, so that the scale is formed at the bottom of the water storage tank 30, thereby reducing the sediment entering the plate heat exchanger, and accordingly reducing the scale deposition in the plate heat exchanger. When the water heater provides only the heating function, the first regulating valve 31 is closed, and thus high-temperature water is also accumulated in the water storage tank 30 until it is full. Whereby the sediment in the water settles in the reservoir 30. Because the sediment is deposited in the water storage tank 30, when the system is descaled and cleaned, only the water storage tank 30 needs to be descaled, and the plate heat exchanger does not need to be disassembled and cleaned.

In some embodiments, a filter screen is provided at the outlet end of the reservoir 30 to further filter the sediment from entering the plate heat exchanger, and to retain it in the reservoir 30. The filter screen can be a conventional scale filter screen, and the high-temperature water flowing out of the water storage tank 30 is subjected to scale filtration through the outlet position arranged at the bottom of the water storage tank 30.

In some embodiments, to further facilitate cleaning of the reservoir 30, the reservoir 30 may be removably mounted so that when the reservoir 30 is cleaned, the reservoir 30 may be removed to clean the interior of the reservoir 30 and the reservoir 30 may be reinstalled after cleaning is complete.

In some embodiments, the water heater further includes a first temperature sensor 41 and a second temperature sensor 42, and the first temperature sensor 41 is disposed on a pipe of the first water outlet pipe 2 communicating with the heating circuit to detect the temperature of water in the heating circuit. The second temperature sensor 42 is arranged on a pipeline which is communicated with the tail end of the domestic water through the second medium outlet end 24, so that the temperature of the water outlet end of the domestic water is detected. The flow rate of each system is controlled according to the temperatures detected by the first temperature sensor 41 and the second temperature sensor 42.

In some embodiments, a water pressure regulating valve 50 is disposed on the pipeline connecting the second medium inlet end 23 and the domestic water supply pipeline, and the water pressure of the inlet water is regulated, so that the temperature of the outlet water can be controlled. Meanwhile, since the water storage tank 30 stores the high temperature water, the water pressure of the high temperature water entering the first medium inlet port 21 is also increased accordingly.

The structure and the working principle of the water heater of the present invention are explained, and on the basis of the above embodiments, the water heater of the present invention can also have other alternative embodiments.

In alternative embodiments, the water storage tank 30 may have other structures, for example, the water storage tank 30 has an inlet end and two outlet ends, the inlet end is communicated with the first water outlet pipe 2, one of the outlet ends is communicated with the second heat exchanger 20, and the other outlet end is communicated with the heating loop. The working principle is similar to the above embodiments, and those skilled in the art can implement the above embodiments based on the above disclosure, and will not be 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 can be made without departing from the scope of the invention.

Claims

1. A water heater, comprising:

the inlet end of the first heat exchanger (10) is communicated with a first water return pipe (1), the outlet end of the first heat exchanger is communicated with a first water outlet pipe (2), and one outlet end of the first water outlet pipe (2) and the first water return pipe (1) are both communicated with a heating loop;

the inlet end of the water storage tank (30) is communicated with the other outlet end of the first water outlet pipe (2), and the outlet end of the water storage tank is communicated with a domestic hot water heat exchange system; and

and the flow distribution controller is arranged at the outlet end of the water storage tank (30) and on a pipeline communicated with the heating loop at one outlet end of the first water outlet pipe (2), and is used for respectively controlling the flow of the two pipelines.

2. The water heater of claim 1,

the outlet end of the water storage tank (30) is provided with a filter screen.

3. The water heater according to claim 1 or 2,

the water storage tank (30) is detachably connected with the domestic hot water heat exchange system and the first water outlet pipe (2).

4. The water heater of claim 1,

the flow distribution controller comprises a first regulating valve (31) and a second regulating valve (32), the first regulating valve (31) is arranged on a pipeline of the outlet end of the water storage tank (30) and the domestic hot water heat exchange system, and the second regulating valve (32) is arranged on a pipeline of the first water outlet pipe (2) and the heating loop.

5. The water heater of claim 1,

the domestic hot water heat exchange system comprises a second heat exchanger (20), wherein a first medium inlet end (21) of the second heat exchanger (20) is communicated with an outlet end of the water storage tank (30), a first medium outlet end (22) is communicated with the first water return pipe (1), and a second medium inlet end (23) and a second medium outlet end (24) are communicated with a domestic water pipeline.

6. The water heater according to claim 5,

the second heat exchanger (20) is a plate heat exchanger.

7. The water heater according to claim 5,

the second medium inlet end (23) is communicated with a domestic water supply pipeline, and the second medium outlet end (24) is communicated with the tail end of domestic water.

8. The water heater according to claim 7,

and a water pressure regulating valve (50) is arranged on a pipeline communicating the second medium inlet end (23) with the domestic water supply pipeline.

9. The water heater of claim 1,

the first heat exchanger (10) is a gas heater and comprises a gas valve (12) and a burner (11) which are communicated with each other through a gas path, and the inlet end of the gas valve (12) is communicated with a gas supply system.

10. The water heater of claim 5, further comprising:

the first temperature sensor (41) is arranged on a pipeline, wherein one outlet end of the first water outlet pipe (2) is communicated with the heating loop;

a second temperature sensor (42) provided at the second medium outlet end (24); and

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