A wall-mounted furnace

Abstract

The present invention provides a wall-mounted boiler, comprising: a heating device; a heating system, comprising a first heated section, and a first heating branch section located between the first heated section and a first outlet; a domestic water heating system, comprising a second heated section, a second heating branch section located upstream of the second heated section, and a third heating branch section located downstream of the second heated section; a first valve device, provided on the first heating branch section and the second heating branch section, and having a first state in which the first heated section is connected to the first heating branch section and the second heating branch section is connected to the second heated section, and a second state in which the first heated section is connected to the second heated section; a connecting pipeline, connecting the third heating branch section and the first heating branch section; a second valve device, provided on the connecting pipeline and the third heating branch section, and having a third state in which the second heated section is connected to the third heating branch section, and a fourth state in which the second heated section is connected to the connecting pipeline.

Description

Technical Field

[0001] The invention relates to the technical field of wall-mounted boilers, and in particular to a wall-mounted boiler. Background Art

[0002] The wall-mounted boiler is a dual-purpose boiler with heating and domestic hot water functions, but most of the existing wall-mounted boilers adopt the principle of domestic hot water priority, that is, when the hot water function is used, the heating function must be stopped and heating cannot be performed. When people need to use both heating and hot water at the same time, especially in the cold winter, if domestic hot water is used for a long time, the room temperature will drop sharply, which will reduce the user's comfort experience and lead to unnecessary energy consumption.

[0003] The prior art discloses a dual-system dual-purpose wall-mounted boiler, comprising: a wall-mounted boiler body, a heating heat exchanger and a domestic heat exchanger installed in the wall-mounted boiler body, and a heating pipeline connected to the heating heat exchanger and a domestic hot water pipeline connected to the domestic heat exchanger. The heating heat exchanger and the domestic heat exchanger are independent of each other, a heating burner is provided corresponding to the heating heat exchanger, and a domestic burner is provided corresponding to the domestic heat exchanger. Gas is supplied to the heating burner and the domestic burner respectively through a gas distribution pipe, and the heating burner and the domestic burner are controlled separately.

[0004] In the above-mentioned prior art, the domestic burner can only be used to heat domestic water. When domestic hot water is not needed, the domestic burner is turned off and the heating burner is used for heating. When a higher heating temperature is required and domestic hot water is not needed, the domestic burner is idle, and the above-mentioned wall-mounted boiler cannot provide a higher heating temperature. Summary of the invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the wall-mounted boiler in the prior art cannot provide a higher heating temperature, thereby providing a wall-mounted boiler that can provide a higher heating temperature.

[0006] In order to solve the above technical problems, the present invention provides a wall-mounted boiler, comprising:

[0007] Heating device;

[0008] A heating system having a first inlet and a first outlet, wherein the heating system comprises a first heated section heated by the heating device, and a first heating branch section located between the first heated section and the first outlet;

[0009] A domestic water heating system having a second inlet and a second outlet, the domestic water heating system comprising a second heated section heated by the heating device, a second heating branch section located upstream of the second heated section, and a third heating branch section located downstream of the second heated section;

[0010] a first valve device, provided on the first heating branch segment and the second heating branch segment, and having a first state in which the first heated segment is connected to the first heating branch segment and the second heating branch segment is connected to the second heated segment, and a second state in which the first heated segment is connected to the second heated segment;

[0011] A connecting pipeline connecting the third heating branch section and the first heating branch section;

[0012] The second valve device is arranged on the connecting pipeline and the third heating branch segment, and has a third state that makes the second heated segment and the third heating branch segment conduct, and a fourth state that makes the second heated segment and the connecting pipeline conduct.

[0013] The first valve device includes a four-way valve, which is respectively connected to the outlet of the first heated section, the inlet of the first heating branch section, the outlet of the second heating branch section, and the inlet of the second heated section.

[0014] The second valve device includes a three-way valve, which is respectively connected to the outlet of the second heated section, the inlet of the third heating branch section, and the connecting pipeline.

[0015] The domestic water heating system comprises:

[0016] A heating pipeline having the second inlet and the second outlet;

[0017] An auxiliary heating pipeline exchanges heat with the second heating pipeline, and has a heat exchange medium outflow port and a medium return port. The auxiliary heating pipeline includes the second heated section, a first auxiliary branch section located between the second heated section and the medium outflow port, and a second auxiliary branch section located between the second heated section and the medium return port. The first auxiliary branch section is the second heating branch section, and the second auxiliary branch section is the third heating branch section.

[0018] It also includes a first heat exchanger, the heating device heats the first heat exchanger, and the first heated section is arranged on the first heat exchanger to exchange heat with the first heat exchanger.

[0019] The first heated section is arranged in an S-curve shape and runs through the first heat exchanger.

[0020] It also includes a second heat exchanger, the heating device heats the second heat exchanger, and the second heated section is arranged on the second heat exchanger to exchange heat with the second heat exchanger.

[0021] The second heated section is arranged in an S-curve shape and penetrates the second heat exchanger.

[0022] It also includes a third heat exchanger arranged on the heating pipeline and the auxiliary heating pipeline, and the third heat exchanger is used to exchange heat between water in the heating pipeline and the heat exchange medium in the auxiliary heating pipeline.

[0023] The third heat exchanger is a plate heat exchanger.

[0024] The heating device comprises:

[0025] A burner connected to a gas pipeline, wherein the burner is provided with a first fire bar for heating the first heated section and a second fire bar for heating the second heated section, and the gas pipeline is provided with a third valve device for controlling the on-off of the gas;

[0026] The ignition device ignites the first fire bar and the second fire bar respectively.

[0027] The gas pipeline includes a gas main line, a first gas branch line connecting the gas main line and the first fire grate, and a second gas branch line connecting the gas main line and the second fire grate. The third valve device includes a gas proportional valve arranged on the gas main line, a first segmented solenoid valve arranged on the first gas branch line, and a second segmented solenoid valve arranged on the second gas branch line.

[0028] A first temperature measuring element is provided on the first heating branch section near the first outlet.

[0029] The first temperature measuring element is a first temperature sensing package.

[0030] A second temperature measuring element is provided on the heating pipeline near the second outlet.

[0031] The second temperature measuring element is a second temperature sensing package.

[0032] It also includes a shell, the burner, the first heat exchanger, and the second heat exchanger are all arranged in the shell, an air vent is arranged at the upper end of the shell, and a fan is arranged in the shell near the air vent.

[0033] A wind pressure switch is arranged at the vent.

[0034] It also includes a controller, which is electrically connected to the wind pressure switch, the gas proportional valve, the first segmented solenoid valve, the second segmented solenoid valve, the first valve device, the second valve device, the ignition device, and the fan.

[0035] The technical solution of the present invention has the following advantages:

[0036] 1. The present invention provides a wall-mounted boiler. When the first valve device is in a first state, the heating device heats the first heated section, and the heating system can provide heating heat. When the heating device heats the second heated section, the domestic hot water heating system can provide domestic hot water. When the heating device heats the first heated section and the second heated section at the same time, the wall-mounted boiler can provide both heating heat and domestic hot water. When domestic hot water is not needed, the first valve device is switched to the second state, and the second valve device is switched to the fourth state. After the heating medium in the first heated section is heated by the heating device, it enters the second heated section through the first valve device for further heating, passes through the connecting pipeline, and finally flows into the first heating branch section. The heating medium is doubly heated and has a higher temperature, so a higher heating temperature can be provided.

[0037] 2. The present invention provides a wall-mounted boiler, wherein the first valve device includes a four-way valve, which is respectively connected to the outlet of the first heated section, the inlet of the first heating branch section, the outlet of the second heating branch section, and the inlet of the second heated section. The first valve device has a simple structure and is easy to install and control.

[0038] 3. In a wall-mounted boiler provided by the present invention, the second valve device includes a three-way valve, which is respectively connected to the outlet of the second heated section, the inlet of the third heating branch section, and the connecting pipeline. The second valve device has a simple structure and is easy to install and control.

[0039] 4. The present invention provides a wall-mounted boiler, wherein the domestic water heating system comprises: a heating pipeline having the second inlet and the second outlet; an auxiliary heating pipeline for exchanging heat with the second heating pipeline, and having a heat exchange medium outflow outlet and a medium return outlet, the auxiliary heating pipeline comprising the second heated section, a first auxiliary branch section located between the second heated section and the medium outflow outlet, and a second auxiliary branch section located between the second heated section and the medium return outlet, the first auxiliary branch section being the second heating branch section, and the second auxiliary branch section being the third heating branch section, domestic water enters through the second inlet, and becomes domestic hot water after heat exchange with the auxiliary heating pipeline, and heat exchange between domestic water and the auxiliary heating pipeline can avoid the heating device directly heating the domestic water and causing the temperature to be too high, which is not conducive to use, and also shortens the flow path of the domestic water to avoid the flow path being too long and causing waste of cold water.

[0040] 5. A wall-mounted boiler provided by the present invention also includes a first heat exchanger. The heating device heats the first heat exchanger. The first heated section is arranged on the first heat exchanger and exchanges heat with the first heat exchanger. The heating device heats the first heat exchanger, and the first heated section exchanges heat with the first heat exchanger, which can avoid the heating device directly heating the first heated section and causing the temperature to be too high, thereby causing damage to the pipeline.

[0041] 6. In a wall-mounted boiler provided by the present invention, the first heated section is arranged in an S-curve shape and penetrates the first heat exchanger, so the heat exchange area is large and the heat exchange efficiency is high.

[0042] 7. A wall-mounted boiler provided by the present invention also includes a second heat exchanger. The heating device heats the second heat exchanger. The second heated section is arranged on the second heat exchanger and exchanges heat with the second heat exchanger. The heating device heats the second heat exchanger, and the second heated section exchanges heat with the second heat exchanger, which can avoid the heating device directly heating the second heated section and causing the temperature to be too high, thereby causing damage to the pipeline.

[0043] 8. In a wall-mounted boiler provided by the present invention, the second heated section is arranged in an S-curve shape and penetrates the second heat exchanger, so the heat exchange area is large and the heat exchange efficiency is high.

[0044] 9. A wall-mounted boiler provided by the present invention also includes a third heat exchanger arranged on the heating pipeline and the auxiliary heating pipeline, and the third heat exchanger is used to exchange heat between water in the heating pipeline and the heat exchange medium in the auxiliary heating pipeline, which can ensure heat exchange efficiency.

[0045] 10. In the wall-mounted boiler provided by the present invention, the third heat exchanger is a plate heat exchanger with high heat exchange efficiency.

[0046] 11. The present invention provides a wall-mounted boiler, wherein the heating device comprises: a burner connected to a gas pipeline, the burner being provided with a first fire grate for heating the first heated section and a second fire grate for heating the second heated section, and the gas pipeline being provided with a third valve device for controlling the on-off of the gas; an ignition device for igniting the first fire grate and the second fire grate respectively, and being able to independently control the first fire grate and the second fire grate, thereby controlling the first heated section and the second heated section to be heated respectively, thereby facilitating the control of the operation of the wall-mounted boiler.

[0047] 12. The present invention provides a wall-mounted boiler, wherein the gas pipeline includes a gas main line, a first gas branch connecting the gas main line and the first fire grate, and a second gas branch connecting the gas main line and the second fire grate, and the third valve device includes a gas proportional valve arranged on the gas main line, a first segmented solenoid valve arranged on the first gas branch, and a second segmented solenoid valve arranged on the second gas branch. The gas proportional valve can control the opening and closing of the gas and the size of the gas flow rate. The segmented solenoid valve is used to facilitate the precise control of the power of the first fire grate and the second fire grate, thereby realizing precise temperature control of the heating system and the domestic hot water heating system.

[0048] 13. In a wall-mounted boiler provided by the present invention, a first temperature measuring element is provided on the first heating branch section near the first outlet, so as to facilitate accurate control of the heating temperature of the heating system.

[0049] 14. In the wall-mounted boiler provided by the present invention, the first temperature measuring element is a first temperature sensing package, which has a simple structure and is easy to install.

[0050] 15. In a wall-mounted boiler provided by the present invention, a second temperature measuring element is provided on the heating pipeline near the second outlet, so as to accurately control the outlet water temperature of the domestic hot water heating system.

[0051] 16. In the wall-mounted boiler provided by the present invention, the second temperature measuring element is a second temperature sensing bag, which has a visible structure and is easy to install.

[0052] 17. A wall-mounted boiler provided by the present invention also includes a shell, the burner, the first heat exchanger, and the second heat exchanger are all arranged in the shell, an air vent is provided at the upper end of the shell, and a fan is provided in the shell near the air vent. When the fan is working, it can provide air required for combustion and discharge smoke generated by combustion.

[0053] 18. In a wall-mounted boiler provided by the present invention, a wind pressure switch is provided at the air vent, and the wind pressure switch can detect whether the flue is normal.

[0054] 19. A wall-mounted boiler provided by the present invention also includes a controller, which is electrically connected to the wind pressure switch, the gas proportional valve, the first segmented solenoid valve, the second segmented solenoid valve, the first valve device, the second valve device, the ignition device, and the fan, so as to automatically control the automatic switching of various working modes of the wall-mounted boiler. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] 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.

[0056] Figure 1 It is a structural schematic diagram of a wall-mounted boiler provided in an embodiment of the present invention;

[0057] Figure 2 for Figure 1 A partial enlarged view of a wall-mounted boiler shown;

[0058] Description of reference numerals:

[0059] 1-wind pressure switch; 2-fan; 3-first heat exchanger; 4-first ignition needle; 5-first fire detection needle; 6-expansion tank; 7-first section solenoid valve; 8-second section solenoid valve; 9-first water pump; 10-gas proportional valve; 11-first inlet; 12-gas main line; 13-second inlet; 14-second outlet; 15-first outlet; 16-water flow sensor; 17-second temperature measuring element; 18-plate heat exchanger; 19-second water pump; 20-first temperature measuring element; 21-burner; 22-second fire detection needle; 23-second ignition needle; 24-temperature limiter; 25-three-way valve; 26-connecting pipeline; 27-second heat exchanger; 28-four-way valve. DETAILED DESCRIPTION

[0060] 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.

[0061] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0062] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0064] Example 1

[0065] This embodiment provides a specific implementation of a wall-mounted boiler. Figure 1 and Figure 2 As shown, it includes a heating device, a heating system, a domestic water heating system, a first valve device, a connecting pipeline 26, a second valve device, a first heat exchanger 3, and a second heat exchanger 27.

[0066] The heating system has a first inlet 11 and a first outlet 15, and includes a first heated section heated by the heating device, and a first heating branch section located between the first heated section and the first outlet 15. A temperature limiter 24 is provided on the first heating branch section, which can limit the output temperature of the first heating branch section.

[0067] The domestic water heating system has a second inlet 13 and a second outlet 14, and includes a second heated section heated by the heating device, a second heating branch section located upstream of the second heated section, and a third heating branch section located downstream of the second heated section.

[0068] The first valve device is provided on the first heating branch section and the second heating branch section, and has a first state in which the first heated section is connected to the first heating branch section, the second heating branch section is connected to the second heated section, and a second state in which the first heated section is connected to the second heated section. In this embodiment, the first valve device includes a four-way valve 28, which is respectively connected to the outlet of the first heated section, the inlet of the first heating branch section, the outlet of the second heating branch section, and the inlet of the second heated section. Of course, in an alternative embodiment, the first valve device can be a five-way valve.

[0069] The connecting pipeline 26 connects the third heating branch section with the first heating branch section.

[0070] The second valve device is provided on the connecting pipeline 26 and the third heating branch section, and has a third state in which the second heated section is connected to the third heating branch section, and a fourth state in which the second heated section is connected to the connecting pipeline 26. In this embodiment, the second valve device includes a three-way valve 25, which is respectively connected to the outlet of the second heated section, the inlet of the third heating branch section, and the connecting pipeline 26. In an alternative embodiment, the second valve device includes a one-way valve respectively provided on the connecting pipeline 26 and the third heating branch section, and the state of the second valve device can be adjusted by controlling the opening of the two one-way valves.

[0071] In this embodiment, the domestic water heating system includes a heating pipeline and an auxiliary heating pipeline, the heating pipeline has the second inlet 13 and the second outlet 14, and a water flow sensor 16 is provided on the heating pipeline near the second inlet 13, and the water flow sensor 16 is connected to the controller. When the water flow is small, the water flow sensor 16 is fed back to the controller to adjust the water flow; the auxiliary heating pipeline exchanges heat with the second heating pipeline, and has a heat exchange medium flow outlet and a medium return port. The auxiliary heating pipeline includes the second heated section, a first auxiliary branch section located between the second heated section and the medium flow outlet, and a second auxiliary branch section located between the second heated section and the medium return port, the first auxiliary branch section is the second heating branch section, and the second auxiliary branch section is the third heating branch section.

[0072] The heating device heats the first heat exchanger 3, and the first heated section is disposed through the first heat exchanger 3 to exchange heat with the first heat exchanger 3. As a preferred embodiment, the first heated section is disposed through the first heat exchanger 3 in an S-curve shape.

[0073] The heating device heats the second heat exchanger 27, and the second heated section is disposed through the second heat exchanger 27 to exchange heat with the second heat exchanger 27. As a preferred embodiment, the second heated section is disposed through the second heat exchanger 27 in an S-curve shape.

[0074] The heating pipeline and the auxiliary heating pipeline are provided with a third heat exchanger, and the third heat exchanger is used to exchange heat between the water in the heating pipeline and the heat exchange medium in the auxiliary heating pipeline. As a preferred embodiment, the third heat exchanger is a plate heat exchanger 18 .

[0075] In this embodiment, the heating device includes a burner 21 and an ignition device. The burner 21 is connected to the gas pipeline. The burner 21 is provided with a first fire bar for heating the first heated section and a second fire bar for heating the second heated section. The first fire bar is provided with a corresponding first ignition needle 4 and a first fire detection needle 5. The first ignition needle 4 is used to ignite the first fire bar, and the first fire detection needle 5 is used to detect whether the ignition is successful. The second fire bar is provided with a corresponding second ignition needle 23 and a second fire detection needle 22. The second ignition needle 23 is used to ignite the second fire bar, and the second fire detection needle 22 is used to detect whether the ignition is successful. A third valve device for controlling the on and off of the gas is provided on the gas pipeline; the ignition device ignites the first fire bar and the second fire bar respectively.

[0076] The gas pipeline includes a gas main line 12, a first gas branch connecting the gas main line 12 and the first fire grate, and a second gas branch connecting the gas main line 12 and the second fire grate. The third valve device includes a gas proportional valve 10 arranged on the gas main line 12, a first segmented solenoid valve 7 arranged on the first gas branch, and a second segmented solenoid valve 8 arranged on the second gas branch.

[0077] A first temperature measuring element 20 is provided on the first heating branch section near the first outlet 15 .

[0078] The first temperature measuring element 20 is a first temperature sensing package.

[0079] A second temperature measuring element 17 is provided on the heating pipeline near the second outlet 14 .

[0080] The second temperature measuring element 17 is a second temperature sensing package.

[0081] It also includes a shell, the burner 21, the first heat exchanger 3, and the second heat exchanger 27 are all arranged in the shell, an air vent is arranged at the upper end of the shell, and a fan 2 is arranged in the shell near the air vent.

[0082] A wind pressure switch 1 is provided at the vent.

[0083] It also includes a controller, which is electrically connected to the wind pressure switch 1, the gas proportional valve 10, the first segmented solenoid valve 7, the second segmented solenoid valve 8, the first valve device, the second valve device, the ignition device, and the fan 2 respectively.

[0084] In this embodiment, the heating medium in the heating system is water, and the heat exchange medium in the auxiliary heating pipeline is water. Of course, in alternative embodiments, the heating medium and the heat exchange medium may also be other fluids.

[0085] like Figure 1As shown, the pipeline between the first heated section and the first inlet 11 is connected to the expansion tank 6 .

[0086] When low-power heating is needed alone, the single heating low-power mode is enabled through the controller, and the controller controls the fan 2 to start. When the wind pressure switch 1 detects the pressure difference signal generated by the airflow of the fan 2 on the venturi tube at the vent, the signal is fed back to the controller. The controller controls the first water pump 9 arranged on the pipeline between the first inlet 11 and the first heated section to run, and the ignition device discharges the first ignition needle 4 to ignite, and the gas proportional valve 10 and the first segmented solenoid valve 7 are opened to pass gas to the first gas branch, and the first fire bar starts to burn. The first fire bar heats the first heat exchanger 3, and the heating medium enters the water pump through the first inlet 11 and then enters the first heated section. The first heated section exchanges heat with the first heat exchanger 3, and the heating medium is heated. The heated heating medium passes through the four-way valve 28 and enters the first heating branch section, and then enters the heating end through the first outlet 15, thereby meeting the needs of single low-power heating.

[0087] When separate domestic hot water is needed, the single domestic hot water mode is enabled through the controller, and the controller controls the fan 2 to start. When the wind pressure switch 1 detects the pressure difference signal generated by the airflow of the fan 2 on the venturi tube at the vent, the signal is fed back to the controller. The controller controls the second water pump 19 arranged on the second heating branch section to run, and the ignition device discharges the second ignition needle 23 for ignition. The gas proportional valve 10 and the second segmented solenoid valve 8 are opened to pass gas to the second gas branch, and the second fire bar starts to burn. The second fire bar heats the second heat exchanger 27. After the heat exchange medium passes through the second heating branch section, it flows into the second heated section through the four-way valve 28. After the second heated section exchanges heat with the second heat exchanger 27, the heat exchange medium is heated, and then flows into the third heating branch section through the three-way valve 25. After the heat is exchanged with the heating pipeline in the third heat exchanger, the domestic water exchanges heat with the third heat exchanger in the heating pipeline and flows out through the second outlet 14, thereby providing domestic hot water.

[0088] When heating and domestic hot water are needed at the same time, the simultaneous heating and domestic hot water mode is enabled through the controller, and the controller controls the fan 2 to start. When the wind pressure switch 1 detects the pressure difference signal generated by the airflow of the fan 2 on the venturi tube at the vent, the signal is fed back to the controller. The controller controls the first water pump 9 and the second water pump 19 to run simultaneously, and the ignition device discharges the first ignition needle 4 and the second ignition needle 23 for ignition, and the gas proportional valve 10, the first segmented solenoid valve 7, and the second segmented solenoid valve 8 are opened to pass gas to the first gas branch and the second gas branch, and the first fire bar and the second fire bar burn at the same time. The first fire row heats the first heat exchanger 3, and the heating medium enters the water pump through the first inlet 11 and then enters the first heated section. The first heated section exchanges heat with the first heat exchanger 3, and the heating medium is heated. The heated heating medium passes through the four-way valve 28 and enters the first heating branch section, and then enters the heating end through the first outlet 15; the second fire row heats the second heat exchanger 27, and the heat exchange medium passes through the second heating branch section and flows into the second heated section through the four-way valve 28. After the second heated section exchanges heat with the second heat exchanger 27, the heat exchange medium is heated, and then passes through the three-way valve 25 and flows into the third heating branch section, and then exchanges heat with the heating pipeline in the third heat exchanger. After the domestic water exchanges heat with the third heat exchanger in the heating pipeline, it flows out through the second outlet 14, which can meet the needs of heating and domestic hot water at the same time.

[0089] When high-power heating is required, the single heating high-power mode is enabled through the controller, and the controller controls the fan 2 to start. When the wind pressure switch 1 detects the pressure difference signal generated by the airflow of the fan 2 on the venturi tube at the vent, the signal is fed back to the controller, and the controller controls the first water pump 9 arranged on the pipeline between the first inlet 11 and the first heated section to run, and the ignition device discharges the first ignition needle 4 and the second ignition needle 23 to ignite, and the gas proportional valve 10, the first segmented solenoid valve 7, and the second segmented solenoid valve 8 are opened to pass gas to the first gas branch and the second gas branch. The first fire bar and the second fire bar burn at the same time, and the three-way valve 25 is switched to the fourth state in which the second heated section is connected to the connecting pipe 26; the heating medium enters the water pump through the first inlet 11 and then enters the first heated section, the first heated section exchanges heat with the first heat exchanger 3, and the heating medium is heated. The heated heating medium passes through the four-way valve 28 and enters the second heated section, the second heated section exchanges heat with the second heat exchanger 27, and the heating medium is heated again, and then enters the first heating branch section through the connecting pipe 26, and enters the heating terminal through the first outlet 15, meeting the needs of high-power heating.

[0090] As a first alternative embodiment of the above embodiment, the first heat exchanger 3 and the second heat exchanger 27 are not provided, and the heating device directly heats the first heated section and the second heated section.

[0091] As a second alternative embodiment of the above embodiment, the domestic water heating system does not have a third heat exchanger. The domestic water enters the second heated section through the second inlet 13, and the second heat exchanger 27 directly heats the domestic water, which then flows out through the second outlet 14 to meet the needs of domestic hot water.

[0092] As a third alternative embodiment of the above embodiment, the heating device may adopt an electric heating method to heat the first heat exchanger 3 and the second heat exchanger 27 respectively.

[0093] As a fourth alternative to the above embodiment, the control of the wall-mounted boiler can be manually controlled.

[0094] 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 wall-mounted boiler, characterized in that: include: Heating device; A heating system having a first inlet (11) and a first outlet (15), the heating system comprising a first heated section heated by the heating device, and a first heating branch section located between the first heated section and the first outlet (15); A domestic water heating system having a second inlet (13) and a second outlet (14), the domestic water heating system comprising a second heated section heated by the heating device, a second heating branch section located upstream of the second heated section, and a third heating branch section located downstream of the second heated section; a first valve device, provided on the first heating branch segment and the second heating branch segment, and having a first state in which the first heated segment is connected to the first heating branch segment and the second heating branch segment is connected to the second heated segment, and a second state in which the first heated segment is connected to the second heated segment; A connecting pipeline (26) connecting the third heating branch section and the first heating branch section; The second valve device is provided on the connecting pipeline (26) and the third heating branch segment, and has a third state in which the second heated segment is connected to the third heating branch segment, and a fourth state in which the second heated segment is connected to the connecting pipeline (26).

2. A wall-mounted boiler according to claim 1, characterized in that: The first valve device comprises a four-way valve (28), which is respectively connected to the outlet of the first heated section, the inlet of the first heating branch section, the outlet of the second heating branch section, and the inlet of the second heated section.

3. A wall-mounted boiler according to claim 1, characterized in that: The second valve device comprises a three-way valve (25) which is respectively connected to the outlet of the second heated section, the inlet of the third heating branch section, and the connecting pipeline (26).

4. A wall-mounted boiler according to claim 1, characterized in that: The domestic water heating system comprises: A heating pipeline having the second inlet (13) and the second outlet (14); An auxiliary heating pipeline exchanges heat with the second heating branch segment, and has a heat exchange medium outflow port and a medium return port. The auxiliary heating pipeline includes the second heated segment, a first auxiliary branch segment located between the second heated segment and the medium outflow port, and a second auxiliary branch segment located between the second heated segment and the medium return port. The first auxiliary branch segment is the second heating branch segment, and the second auxiliary branch segment is the third heating branch segment.

5. The wall-mounted boiler according to claim 1, characterized in that: It also comprises a first heat exchanger (3), the heating device heats the first heat exchanger (3), and the first heated section is arranged through the first heat exchanger (3) to exchange heat with the first heat exchanger (3).

6. A wall-mounted boiler according to claim 5, characterized in that: The first heated section is arranged in an S-curve shape and runs through the first heat exchanger (3).

7. The wall-mounted boiler according to claim 5, characterized in that: It also comprises a second heat exchanger (27), the heating device heats the second heat exchanger (27), and the second heated section is arranged through the second heat exchanger (27) to exchange heat with the second heat exchanger (27).

8. The wall-mounted boiler according to claim 7, characterized in that: The second heated section is arranged in an S-curve shape and runs through the second heat exchanger (27).

9. The wall-mounted boiler according to claim 4, characterized in that: It also includes a third heat exchanger arranged on the heating pipeline and the auxiliary heating pipeline, and the third heat exchanger is used to exchange heat between water in the heating pipeline and the heat exchange medium in the auxiliary heating pipeline.

10. A wall-mounted boiler according to claim 9, characterized in that: The third heat exchanger is a plate heat exchanger (18).

11. The wall-mounted boiler according to claim 7, characterized in that: The heating device comprises: A burner (21) is connected to a gas pipeline, the burner (21) is provided with a first fire bar for heating the first heated section and a second fire bar for heating the second heated section, and the gas pipeline is provided with a third valve device for controlling the on and off of the gas; The ignition device ignites the first fire bar and the second fire bar respectively.

12. A wall-mounted boiler according to claim 11, characterized in that: The gas pipeline comprises a main gas pipeline (12), a first gas branch connecting the main gas pipeline (12) and the first fire grate, and a second gas branch connecting the main gas pipeline (12) and the second fire grate; the third valve device comprises a gas proportional valve (10) arranged on the main gas pipeline (12), a first segmented solenoid valve (7) arranged on the first gas branch, and a second segmented solenoid valve (8) arranged on the second gas branch.

13. The wall-mounted boiler according to claim 1, characterized in that: A first temperature measuring element (20) is provided on the first heating branch section near the first outlet (15).

14. A wall-mounted boiler according to claim 13, characterized in that: The first temperature measuring element (20) is a first temperature sensing package.

15. The wall-mounted boiler according to claim 4, characterized in that: A second temperature measuring element (17) is provided on the heating pipeline near the second outlet (14).

16. The wall-mounted boiler according to claim 15, characterized in that: The second temperature measuring element (17) is a second temperature sensing package.

17. The wall-mounted boiler according to claim 12, characterized in that: It also comprises a shell, wherein the burner (21), the first heat exchanger (3), and the second heat exchanger (27) are all arranged in the shell, an air vent is arranged at the upper end of the shell, and a fan (2) is arranged in the shell near the air vent.

18. The wall-mounted boiler according to claim 17, characterized in that: A wind pressure switch (1) is provided at the vent.

19. The wall-mounted boiler according to claim 18, characterized in that: It also includes a controller, which is electrically connected to the wind pressure switch (1), the gas proportional valve (10), the first segmented solenoid valve (7), the second segmented solenoid valve (8), the first valve device, the second valve device, the ignition device, and the fan (2).

Images