A gas wall-mounted boiler

Abstract

The present invention provides a gas wall-mounted boiler, which includes a first heat exchanger, the first heat exchanger includes a water inlet and a water outlet, the water outlet is connected to a heating water outlet pipe and a bathroom hot water pipe; the bathroom hot water pipe is connected to a bathroom heat exchange system including bathroom pipelines; and also includes a first control valve and a second control valve for controlling the first heat exchanger to be connected and closed with the heating water outlet pipe and the bathroom hot water pipe respectively. With such a design, without adding a new combustion system or a new circulation system, the heating and bathroom pipelines can be opened separately and opened together by controlling the first control valve and the second control valve, which has a simple structure, low cost, and does not increase the volume of the overall device.

Description

Technical Field

[0001] The invention relates to the technical field of heating and hot water equipment, and in particular to a gas wall-mounted boiler. Background Art

[0002] Gas heating water boiler, also known as gas wall-mounted boiler, is a household boiler that can be used for both heating and domestic hot water. Gas wall-mounted boiler has a powerful family central heating function, which can meet the heating needs of multiple rooms. Each room can set a comfortable temperature according to the needs, and can also decide to turn off the heating of a room separately according to the needs. It can also provide a large flow of constant temperature sanitary hot water for family bathing, kitchen and other places. With the popularization of gas equipment in recent years, the application of gas wall-mounted boilers has become more and more extensive.

[0003] Gas water heaters in the prior art usually cannot achieve simultaneous use of heating and domestic hot water. In view of this, the utility model patent with publication number CN208751017U provides a dual-gas device and a gas water heater, which includes a first gas device, a second gas device and a main controller; the dual-gas device and the gas water heater proposed by it can achieve simultaneous domestic hot water and heating by designing two independent combustion systems, and can also be operated separately according to customer needs, that is, independent heating and independent hot water are achieved. When heating and hot water are provided at the same time, the user's use needs can be met.

[0004] Although the above patent adopts two independent combustion systems to realize hot water supply and heating at the same time, such a design increases the cost of the gas wall-mounted boiler, and the overall structure is more complicated and the volume is increased accordingly. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defects of the prior art in achieving simultaneous hot water supply and heating, such as high cost, complex structure and large overall volume, thereby providing a gas wall-mounted boiler.

[0006] The present invention provides a gas wall-mounted boiler, comprising a first heat exchanger, the first heat exchanger comprising a water inlet and a water outlet, the water outlet being connected to a heating water outlet pipe and a bathroom hot water pipe; the bathroom hot water pipe is connected to a bathroom heat exchange system comprising bathroom pipelines; and also comprising a first control valve and a second control valve for controlling the first heat exchanger to be connected and closed to the heating water outlet pipe and the bathroom hot water pipe respectively.

[0007] Optionally, it includes an intermediate pipeline connecting the heating water outlet pipe and the bathroom hot water pipe, and the intermediate pipeline is provided with a third control valve for controlling its conduction and closing.

[0008] Optionally, the first control valve, the second control valve and the third control valve are a first three-way valve arranged between the heating water outlet pipe and the intermediate pipeline, and a third three-way valve arranged between the bathroom hot water pipe and the intermediate pipeline.

[0009] Optionally, the first three-way valve and the second three-way valve are controllable solenoid valves, and further include a controller for controlling the first three-way valve and the second three-way valve.

[0010] Optionally, the first heat exchanger includes a first heat exchange pipeline and a second heat exchange pipeline branched by the water inlet; the water outlet of the first heat exchange pipeline is connected to the heating water outlet pipe, and the water outlet of the second heat exchange pipeline is connected to the bathroom hot water pipe.

[0011] Optionally, the first heat exchange pipeline and the second heat exchange pipeline are pipeline structures arranged separately on a heat exchange plane.

[0012] Optionally, the first heat exchange pipeline and the second heat exchange pipeline are of a sleeve structure; the sleeve structure is extended and arranged in a heat exchange plane.

[0013] Optionally, the bathroom heat exchange system includes a second heat exchanger connected to the bathroom hot water pipe, and a bathroom pipeline connected in series to the second heat exchanger, wherein the bathroom pipeline includes a bathroom water inlet pipe and a bathroom water outlet pipe.

[0014] Optionally, the second heat exchanger is a plate heat exchanger having a bathroom return pipe connected to the bathroom hot water pipe.

[0015] Optionally, it includes a heating return pipe connected to the water inlet, and the bathroom return pipe is connected to the heating return pipe; the heating return pipe is also provided with a water pump for driving the water flow.

[0016] The technical solution of the present invention has the following advantages:

[0017] The present invention provides a gas wall-mounted boiler, which includes a first heat exchanger, the first heat exchanger includes a water inlet and a water outlet, the water outlet is connected to a heating water outlet pipe and a bathroom hot water pipe; the bathroom hot water pipe is connected to a bathroom heat exchange system including bathroom pipelines; and also includes a first control valve and a second control valve for controlling the first heat exchanger to be connected and closed with the heating water outlet pipe and the bathroom hot water pipe respectively. With such a design, without adding a new combustion system or a new circulation system, the heating and bathroom pipelines can be opened separately or together by controlling the first control valve and the second control valve, which has a simple structure, low cost, and does not increase the volume of the overall device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 This is a schematic structural diagram of a gas wall-mounted boiler provided in the first embodiment of the present invention.

[0020] Description of reference numerals:

[0021] 1-heating return pipe, 2-water pump, 3-second heat exchange pipeline, 4-first heat exchange pipeline, 5-first three-way valve, 6-heating outlet pipe, 7-bathroom outlet pipe, 8-bathroom inlet pipe, 9-bathroom return pipe, 10-second heat exchanger, 11-second three-way valve, 12-bathroom hot water pipe, 13-intermediate pipeline, 14-first heat exchanger;

[0022] A-water inlet, B-first channel, C-second channel, D-third channel, E-fourth channel, F-fifth channel, G-sixth channel. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Figure 1 An embodiment of a gas wall-mounted boiler provided by the present invention is shown.

[0025] like Figure 1 As shown, the gas wall-mounted boiler includes a heating return pipe 1, a water pump 2, a second heat exchanger 10, a first heat exchange pipeline 4, a second heat exchange pipeline 3, a first three-way valve 5, a heating outlet pipe 6, a bathroom outlet pipe 7, a bathroom inlet pipe 8, a bathroom return pipe 9, a second heat exchanger 10, a second three-way valve 11, a bathroom hot water pipe 12 and an intermediate pipeline 13. Among them, one end of the heating return pipe 1 is a heating return port, which is connected to the return pipe of the heating device; the other end is connected to the water inlet A of the first heat exchanger 14. The heating return pipe 1 is also provided with a water pump 2 for driving the water flow.

[0026] The first heat exchanger 14 includes a first heat exchange pipeline 4 and a second heat exchange pipeline 3 connected to the water inlet A. The first heat exchange pipeline 4 and the second heat exchange pipeline 3 are pipeline structures arranged separately on the heat exchange plane. The heat exchange plane is a device whose temperature rises under the action of the combustion system of the gas water heater, and is used to exchange heat between the first heat exchange pipeline 4 and the second heat exchange pipeline 3. The water in the heating return pipe 1 is diverted from the water inlet AA to the first heat exchange pipeline 4 and the second heat exchange pipeline 3.

[0027] The water outlet of the first heat exchange pipeline 4 is connected to the heating water outlet pipe 6, the end of the heating water outlet pipe 6 is connected to the heating water outlet, and the heating water outlet is connected to the heating device to achieve heat exchange with the environment.

[0028] The water outlet of the second heat exchange pipeline 3 is connected to the bathroom hot water pipe 12, and the other end of the bathroom hot water pipe 12 is connected to the bathroom heat exchange system. The bathroom heat exchange system includes a second heat exchanger 10 connected to the bathroom hot water pipe 12 and a bathroom pipeline connected in series to the second heat exchanger 10. The bathroom pipeline includes a bathroom outlet pipe 7 and a bathroom inlet pipe 8 connected to the second heat exchanger 10. The bathroom pipeline exchanges heat with the water in the bathroom hot water pipe 12 in the second heat exchanger, and the hot water in the bathroom hot water pipe 12 is connected to the heating return pipe 1 by the bathroom return pipe 9 after passing through the second heat exchanger 10. In this embodiment, the second heat exchanger 10 adopts a plate heat exchanger. Obviously, in other embodiments, the second heat exchanger 10 can be replaced by a shell and tube heat exchanger, a coil heat exchanger or other heat exchangers.

[0029] An intermediate pipeline 13 is also provided between the heating water outlet pipe 6 and the bathroom hot water pipe 12, and both ends of the intermediate pipeline 13 are connected to the heating water outlet pipe 6 and the bathroom hot water pipe 12 through the first three-way valve 5 and the second three-way valve 11, respectively. Specifically, the first three-way valve 5 includes a first channel B, a second channel C and a third channel D. The first channel B and the second channel C are arranged on the heating water outlet pipe 6, corresponding to the water outlet of the first heat exchange pipeline 4 and the heating water outlet, respectively. The third channel D is connected to the intermediate pipeline 13. The second three-way valve 11 includes a fourth channel E, a fifth channel F and a sixth channel G. The fourth channel E and the fifth channel F are arranged on the bathroom hot water pipe 12, corresponding to the water outlet of the second heat exchange pipeline 3 and the second heat exchanger 10, respectively. The sixth channel G is connected to the intermediate pipeline 13.

[0030] The first three-way valve 5 and the second three-way valve 11 are controllable electromagnetic valves, and the gas wall-mounted boiler also includes a controller for controlling the actions of the first three-way valve 5 and the second three-way valve 11 .

[0031] The working principle of the gas wall-mounted boiler is:

[0032] Only the heating mode is turned on: the controller controls the fifth channel F of the second three-way valve 11 to be closed, and the fourth channel E is connected to the sixth channel G. The channels in the first three-way valve 5 in the first channel B, the second channel C and the third channel D are all open. The heating return water enters the first heat exchanger 14 from the heating return pipe 1 and the water pump 2, and is divided after passing through the water inlet A of the first heat exchanger 14. One way passes through the first heat exchange pipeline 4 to reach the first three-way valve 5, and the other way passes through the bathroom hot water pipe 12 to enter the second three-way valve 11, and then passes through the intermediate pipeline 13 to reach the first three-way valve 5 and merge with the heating outlet pipe 6, and then comes out of the heating outlet, reaches the heating device for heating heat exchange, and finally flows back to the heating return pipe 1.

[0033] It can be seen from the above description that when domestic hot water is not used, the gas wall-mounted boiler is controlled by a controller, and the first heat exchange pipeline 4 and the second heat exchange pipeline 3 are used together for heating, thereby improving resource utilization and reducing waste.

[0034] Only open the bathroom mode and the domestic hot water mode: the controller controls the second channel C of the first three-way valve 5 to be closed, and the first channel B and the third channel D to be turned on. The channels in the third directions of the fourth channel E, the fifth channel F and the sixth channel G in the second three-way valve 11 are all opened. The heating return water enters the first heat exchanger 14 from the heating return pipe 1 and the water pump 2, and is divided after passing through the water inlet A of the first heat exchanger 14. One way passes through the second heat exchange pipeline 3 and the bathroom hot water pipe 12 to reach the second heat exchanger 10; the other way passes through the first heat exchange pipeline 4 to reach the first three-way valve 5, and merges with the bathroom hot water pipe 12 through the intermediate pipeline 13, and enters the plate heat exchanger together to participate in the bathroom water heat exchange, and finally flows back to the heating return pipe 1 through the bathroom return pipe 9. Bathroom water enters the plate heat exchanger from the bathroom inlet pipe 8 for heat exchange, and flows out from the bathroom outlet pipe 7 for user use.

[0035] It can be seen from the above description that when heating is not used, the gas wall-mounted boiler is controlled by a controller, and the first heat exchange pipeline 4 and the second heat exchange pipeline 3 are used together as domestic hot water, thereby improving resource utilization and reducing waste.

[0036] The heating mode and bathroom mode are turned on at the same time: the controller controls the second three-way valve 11 to be fully opened, the third channel D of the first three-way valve 5 is closed, and the first channel B and the second channel C are opened. The heating return water enters the first heat exchanger 14 from the heating return water pipe 1 and the water pump 2, and is split after passing through the water inlet A of the first heat exchanger 14. One way passes through the first heat exchange pipeline 4 to reach the first three-way valve 5, comes out from the heating water outlet, reaches the heating device for heat exchange, and then returns to the water pump 2 from the heating return water outlet for circulation. This is the heating system. The other way enters the plate heat exchanger through the second heat exchange pipeline 3, and then flows to the water pump 2 for circulation; the bathroom water enters the plate heat exchanger from the bathroom water inlet A for heat exchange, and finally flows back to the heating return water pipe 1 through the bathroom return water pipe 9. The bathroom water enters the plate heat exchanger from the bathroom water inlet pipe 8 for heat exchange, and flows out from the bathroom outlet pipe 7 for user use.

[0037] From the above description, it can be known that two first heat exchange pipelines 4 and second heat exchange pipelines 3 are arranged in the first heat exchanger 14 at the same time, which do not intersect with each other and only intersect at the water inlet AA entering the first heat exchanger 14. It can be divided into a heating system and a bathroom system. By controlling the channels of the first three-way valve and the second three-way valve through the controller, the heating system and the bathroom system can work at the same time. Without adding a new combustion system or a new circulation system, the structure is simple, the cost is low, and the volume of the overall device is not increased.

[0038] As another alternative embodiment, the first three-way valve 5 and the second three-way valve 11 are replaced by a first control valve, a second control valve and a third control valve which are respectively controlled to be on and off.

[0039] As another alternative embodiment, the first heat exchange pipeline 4 and the second heat exchange pipeline 3 may be nested pipelines.

[0040] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A gas wall-mounted boiler, characterized in that: The invention comprises a first heat exchanger (14), wherein the first heat exchanger (14) comprises a water inlet and a water outlet, wherein the water outlet is connected to a heating water outlet pipe (6) and a bathroom hot water pipe (12); the bathroom hot water pipe (12) is connected to a bathroom heat exchange system comprising bathroom pipelines; further comprising a first control valve and a second control valve for controlling the connection and closing of the first heat exchanger (14) to the heating water outlet pipe (6) and the bathroom hot water pipe (12), respectively; further comprising an intermediate pipeline (13) connecting the heating water outlet pipe (6) and the bathroom hot water pipe (12), wherein the intermediate pipeline (13) is provided with a third control valve for controlling the connection and closing of the intermediate pipeline; The first control valve, the second control valve and the third control valve are a first three-way valve (5) arranged between the heating water outlet pipe (6) and the intermediate pipeline (13), and a second three-way valve (11) arranged between the bathroom hot water pipe (12) and the intermediate pipeline (13); The first heat exchanger (14) comprises a first heat exchange pipeline (4) and a second heat exchange pipeline (3) which are branched by the water inlet; the water outlet of the first heat exchange pipeline (4) is connected to the heating water outlet pipe (6), and the water outlet of the second heat exchange pipeline (3) is connected to the bathroom hot water pipe (12).

2. The gas wall-mounted boiler according to claim 1, characterized in that: The first three-way valve (5) and the second three-way valve (11) are controllable solenoid valves, and further include a controller for controlling the first three-way valve (5) and the second three-way valve (11).

3. The gas wall-mounted boiler according to claim 2, characterized in that: The first heat exchange pipeline (4) and the second heat exchange pipeline (3) are pipeline structures that are arranged separately on a heat exchange plane.

4. The gas wall-mounted boiler according to claim 3 is characterized in that: The first heat exchange pipeline (4) and the second heat exchange pipeline (3) are of a casing structure; the casing structure is extended and arranged in a heat exchange plane.

5. The gas wall-mounted boiler according to any one of claims 1 to 4, characterized in that: The bathroom heat exchange system comprises a second heat exchanger (10) connected to the bathroom hot water pipe (12), and a bathroom pipeline connected in series to the second heat exchanger (10), wherein the bathroom pipeline comprises a bathroom water inlet pipe (8) and a bathroom water outlet pipe (7).

6. The gas wall-mounted boiler according to claim 5, characterized in that: The second heat exchanger (10) is a plate heat exchanger having a bathroom return pipe (9) connected to the bathroom hot water pipe (12).

7. The gas wall-mounted boiler according to claim 6, characterized in that: It comprises a heating water return pipe (1) connected to the water inlet, the bathroom water return pipe (9) being connected to the heating water return pipe (1); the heating water return pipe (1) is also provided with a water pump (2) for driving the water flow.

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