Burners and household appliances

Abstract

The present invention discloses a burner and a household appliance thereof. The burner includes a first combustion module and a second combustion module, the first combustion module is provided with a first inner cavity connected to a fuel feed pipe, and the second combustion module is provided with a second inner cavity which can be communicated with the first inner cavity; the inner cavity of the combustion module is communicated with a nozzle, and the nozzle sprays fuel for combustion; the second combustion module can be moved relative to the first combustion module to be spliced into one or separated from each other, so that the second inner cavity is communicated with or separated from the first inner cavity to control the opening and closing of each nozzle. The household appliance includes the above-mentioned burner. The burner and the household appliance provided by the present invention can be quickly integrated into burners of different power segments through the combustion modules that can be spliced and separated, and the number of working nozzles can be adjusted. By working with different numbers of nozzles, the burner can be operated under different loads, so that the load adjustment ratio range of the burner is larger, and it is not easy to cause the problem of excessive water temperature when heating water.

Description

Technical Field

[0001] The present invention belongs to the field of heating, and in particular relates to a burner and a household appliance thereof. Background Art

[0002] A wall-mounted boiler, also known as a gas-fired heating water heater, is a household appliance that heats water through a burner to achieve dual functions of heating and sanitary hot water.

[0003] Currently, a wall-mounted boiler consists of a burner, a heat exchanger, and a water pipe. The burner is located below the heat exchanger, and the water pipe is arranged in a serpentine shape between the fins of the heat exchanger. The burner burns fuel, which heats water flowing through the water pipe through the heat exchanger, thereby providing a large flow of hot water at a constant temperature.

[0004] The burner is equipped with a fuel pipe and a nozzle. The pipe supplies fuel to the nozzle for ignition and combustion. A proportional valve is installed on the fuel pipe. The burner's combustion power is adjusted by adjusting the proportional valve to control the nozzle's air output, thereby adjusting the flame size. In summer bathing mode, when users have lower heat output requirements, the system adjusts the proportional valve to reduce the air intake, reducing the flame size. Conversely, in winter, the flame size is increased to regulate heat output.

[0005] However, when using hot water in the summer, for example, when the water temperature rises to around 30 degrees Celsius, the boiler can still cause the water temperature to be too high when adjusting the proportional valve that controls the air intake to the minimum gas intake to heat the water. Users have reported that this hot water temperature is too high in the summer, affecting their shower comfort. Furthermore, when reducing the heat output, poor combustion phenomena such as valve shutoff and flameout may occur.

[0006] At the same time, when the wall-mounted boiler is shut down and started up, the proportional valve that controls the air intake will be fully opened, and a large amount of gas will instantly enter the combustion chamber. The gas heating water boiler will ignite at full load in normal working conditions. At this time, due to the large amount of air intake during ignition, it is easy to cause deflagration. Especially in winter when the ambient temperature is low, the wall-mounted boiler is more likely to cause deflagration when it is cold started. In serious cases, it may even explode, leading to accidents and causing loss of life and property to users. Summary of the Invention

[0007] The present invention provides a burner and a household appliance thereof to solve the technical problem mentioned in the background art that the burner has a small adjustment ratio range during heating, easily causes the water temperature to be too high when heating water, and leads to poor user experience.

[0008] To achieve the above-mentioned purpose, the specific technical solutions of the burner and the household appliance thereof of the present invention are as follows:

[0009] A burner includes a first combustion module and a second combustion module. The first combustion module is provided with a first inner cavity connected to a fuel feed pipe, and the second combustion module is provided with a second inner cavity. The inner cavity of the combustion module is connected to a nozzle, which sprays fuel for combustion. The second combustion module can be moved relative to the first combustion module to be spliced into one body or separated from each other, so that the second inner cavity is connected to or separated from the first inner cavity to control the opening and closing of each nozzle.

[0010] Furthermore, the second combustion module is slidably connected to the slide rail, and the first combustion module and the slide rail are fixedly connected; the second combustion module can be close to the first combustion module and spliced into one piece, so that the second inner cavity is connected to the first inner cavity; the second combustion module can be away from the first combustion module to separate from each other, so that the second inner cavity is separated from the first inner cavity.

[0011] Furthermore, the first combustion module is fixed at one end of the slide rail, and the second combustion module is arranged beside the first combustion module.

[0012] Furthermore, the slide rail is fixed with a positioning baffle, and the positioning baffle and the first combustion module are respectively located on both sides of the second combustion module to limit the stroke of the second combustion module.

[0013] Furthermore, the second combustion module includes a transfer module and a terminal module. The transfer module is located between the first combustion module and the terminal module. The second inner cavity of the terminal module can be connected to the first inner cavity of the first combustion module through the second inner cavity of the transfer module.

[0014] Furthermore, the upstream combustion module is provided with a first splicing tube, and the downstream combustion module is provided with a second splicing tube, and the second splicing tube is arranged opposite to the first splicing tube; the second splicing tube and the first splicing tube are plugged into each other to splice the first combustion module and the second combustion module.

[0015] Furthermore, a valve structure is provided on the first splicing tube, the first combustion module and the second combustion module are separated, and the valve structure closes the first splicing tube.

[0016] Furthermore, the valve structure includes a sealing ball located inside the first splicing tube, and a valve port is provided at one end of the first splicing tube for inserting the second splicing tube; the sealing ball is plugged on the valve port by the fuel pressure in the inner cavity to close the first splicing tube.

[0017] Furthermore, a thimble is provided in the second splicing tube, and the second splicing tube is inserted into the valve port. The thimble pushes the sealing ball to separate the sealing ball and the valve port, thereby connecting the first inner cavity and the second inner cavity.

[0018] Furthermore, a necked end is provided at one end of the first splicing tube away from the valve port, and the necked end gradually reduces in diameter as it moves away from the first splicing tube, so that the inner cavity of the necked end away from the first splicing tube is smaller than the diameter of the sealing ball.

[0019] Furthermore, a first magnetic sheet and a second magnetic sheet are respectively provided on two adjacent combustion modules. The first magnetic sheet and the second magnetic sheet are arranged opposite to each other and can be adsorbed on each other, so that the adjacent combustion modules fit tightly together to be assembled into one.

[0020] A household appliance comprises the burner mentioned above.

[0021] The burner and household appliance thereof of the present invention have the following advantages:

[0022] 1. Through the combinable and separable combustion modules, burners of different power ranges can be quickly integrated. The burner adjusts the number of nozzles in operation. By operating different numbers of nozzles, the burner can operate under different loads, making the load adjustment ratio of the burner wider and less likely to cause the problem of excessive water temperature when heating water. At the same time, during the ignition stage, only a small number of nozzles can be ignited, and then the opening of other nozzles can be adjusted to make the remaining nozzles work. This solves the problem of deflagration caused by all nozzles working together during burner ignition, and improves safety performance.

[0023] 2. The sealing ball is pressed against the valve port by the pressure of the fuel, thereby sealing the inner cavity and preventing the fuel in the inner cavity from leaking; the ejector pin pushes the sealing ball open, opening the valve port, thereby connecting the first splicing pipe and the second splicing pipe, allowing the fuel in the inner cavity of the upstream combustion module to flow into the inner cavity of the downstream combustion module; and the mechanical connection method is used, which is coordinated with the mobile method, and the structure is simple and easy to set up;

[0024] 3. The adjacent combustion modules are adsorbed together by the magnetic adsorption force between the magnetic sheets, so that the combustion modules are spliced into one piece; when the adsorption force between the magnetic sheets is eliminated, the sealing ball is reset under the pressure of the fuel, and the ejector pin is ejected at the same time, so that the adjacent combustion modules are reset. No other structures are required, and it is easy to install in the limited space of the burner. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the burner structure of the present invention;

[0026] Figure 2 is a cross-sectional view of a first combustion module of the present invention;

[0027] Figure 3 is a cross-sectional view of a second combustion module of the present invention;

[0028] Figure 4 It is a schematic diagram of the fire bar structure of the present invention.

[0029] Description of the marks in the figure:

[0030] 1. Slide rail; 11. Positioning baffle; 2. First combustion module; 21. First inner cavity; 22. First nozzle; 3. Second combustion module; 31. Second inner cavity; 32. Second nozzle; 33. Transfer module; 34. Terminal module; 4. First splicing tube; 41. Valve port; 42. Recessed end; 43. Sealing ball; 5. Second splicing tube; 51. Ejector pin; 6. First magnetic sheet; 7. Second magnetic sheet; 8. Fire grate; 9. Fuel feed pipe. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] 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 internal communication between 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. 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.

[0034] Those skilled in the art will appreciate that although some embodiments herein include certain features included in other embodiments but not other features, the combination of features from different embodiments is intended to be within the scope of the present invention and to form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0035] like Figure 1-Figure 3As shown, the burner of the present invention includes a first combustion module 2 and a second combustion module 3. The first combustion module 2 has a first inner cavity 21 connected to a fuel feed pipe 9, and the second combustion module 3 has a second inner cavity 31 that communicates with the first inner cavity 21. The inner cavities of the combustion modules are connected to nozzles. Specifically, the first inner cavity 21 of the first combustion module 2 is connected to a first nozzle 22, and the second inner cavity 31 of the second combustion module 3 is connected to a second nozzle 32. The nozzles spray fuel for combustion.

[0036] The second combustion module 3 can be moved relative to the first combustion module 2 to be spliced into one piece or separated from each other, so that the second inner cavity 31 is connected to or separated from the first inner cavity 21 to control the opening and closing of each nozzle. By connecting the second inner cavity 31 of different numbers of second combustion modules 3 with the first inner cavity 21 of the first combustion module 2, burners of different power ranges can be quickly integrated to meet the selection requirements of wall-mounted boilers of different powers. Simultaneously, during user use, the fire grate 8 can be matched according to the required combustion conditions to achieve single-row combustion with minimum power, meeting the domestic water demand in summer.

[0037] Specifically, the second combustion module 3 is slidably connected to the slide rail 1, and the first combustion module 2 is fixedly connected to the slide rail 1, so that the second combustion module 3 can be close to the first combustion module 2 and spliced into one, so that the second inner cavity 31 is connected to the first inner cavity 21; the second combustion module 3 can be away from the first combustion module 2 to separate from each other, so that the second inner cavity 31 is separated from the first inner cavity 21.

[0038] The first combustion module 2 can be fixed to one end of the slide rail 1, and the second combustion module 3 is arranged beside the first combustion module 2. Depending on the situation, different numbers of second combustion modules 3 can be set.

[0039] The second combustion module 3 may be provided with only one, and the second combustion module 3 includes a terminal module 34, which is located next to the first combustion module 2. The terminal module 34 is close to the first combustion module 2 and is integrally connected to the first combustion module 2. The second inner cavity 31 is connected to the first inner cavity 21, so that all nozzles can spray fuel.

[0040] At least two second combustion modules 3 can be provided, and the second combustion module 3 includes several transfer modules 33 and one terminal module 34. The transfer module 33 is located between the first combustion module 2 and the terminal module 34. The second inner cavity of the terminal module 34 can communicate with the first inner cavity 21 of the first combustion module 2 through the second inner cavity of the transfer module 33. Depending on the situation, the corresponding transfer modules 23 can be moved to connect different numbers of transfer modules 33 with the first combustion module 2, or all transfer modules 33 and terminal modules 34 can be connected to the first combustion module 2 to adjust the power range of the burner.

[0041] In addition, the slide rail 1 is fixed with a positioning baffle 11 , which and the first combustion module 2 are respectively located on both sides of the second combustion module 3 to limit the stroke of the second combustion module 3 and prevent the second combustion module 3 from falling off the slide rail 1 .

[0042] In another embodiment, the first combustion module 2 can also be fixed in the middle of the slide rail 1, and the second combustion modules 3 are arranged on both sides of the second combustion module 3, and positioning baffles 11 are respectively provided at both ends of the slide rail 1. Although the cost is increased, the burner can start combustion from the middle, which facilitates the control of the heating center.

[0043] In another embodiment, the first combustion module 2 can also be movably connected to the slide rail 1, and the second combustion module 3 is fixed by a positioning baffle 11, but the structure is complex and difficult to correspond to structures such as fire bars, so it is not preferred.

[0044] In order to allow the second combustion module 3 and the first combustion module 2 to be spliced together, the first combustion module 2 is provided with a first splicing tube 4, and the second combustion module 3 is provided with a second splicing tube 5. The second splicing tube 5 is arranged opposite the first splicing tube 4. The second splicing tube 5 and the first splicing tube 4 are plugged into each other, so that the first combustion module 2 and the second combustion module 3 are spliced and connected. In addition, a valve structure is provided on the first splicing tube 4. When the first combustion module 2 and the second combustion module 3 are separated, the valve structure closes the first splicing tube 4 to prevent air leakage.

[0045] The second splicing pipe 5 is provided on the side of the transfer module 33 close to the first combustion module 2, and the transfer module 33 is also provided with a first splicing pipe 4 away from the first combustion module 2 to connect two adjacent second combustion modules 3. In other words, the splicing pipe can selectively connect the upstream and downstream adjacent combustion modules.

[0046] The second splicing tube 5 is arranged on the side of the terminal module 34 close to the first combustion module 2. The terminal module 34 can be provided with a flat surface away from the first combustion module 2, and the flat surface can abut against the positioning baffle 11 for positioning. In addition, the terminal module 34 can also be consistent in structure with the transfer module 33 to save mold manufacturing costs.

[0047] The first splicing tube 4 is recessed in the side of the combustion module, while the second splicing tube 5 is protruded from the side of the adjacent combustion module to save plug-in space. Alternatively, the first splicing tube 4 can be protruded from the side of the combustion module, while the second splicing tube 5 can be recessed in the side of the adjacent combustion module to also provide plug-in space.

[0048] The valve structure can be either an electronic valve or a mechanical structure. If an electronic valve is used, a sensor is required to control the opening and closing of the first splicing tube 4, which is not preferred. For example, a touch switch can be installed between adjacent combustion modules. When an adjacent combustion module approaches and contacts the touch switch, the combustion module is determined to have moved into position, causing the electronic valve to open and connect the adjacent combustion module.

[0049] If the valve structure adopts a mechanical structure, the valve structure includes a sealing ball 43 located on the inner side of the first splicing tube 4, and a valve port 41 is provided at one end of the first splicing tube 4 for the second splicing tube 5 to be inserted; the sealing ball 43 is plugged on the valve port 41 by the fuel pressure in the inner cavity to close the first splicing tube 4; and a ejector pin 51 is mounted in the second splicing tube 5. Specifically, a radially arranged connecting arm is formed on the inner wall of the second splicing tube 5, one end of the connecting arm is connected to the ejector pin 51, and the other end is connected to the inner wall of the second splicing tube 5. The second splicing tube 5 is inserted into the valve port 41, and the ejector pin 51 pushes the sealing ball 43 to separate the sealing ball 43 and the valve port 41. Since the diameter of the sealing ball 43 is smaller than the inner diameter of the first splicing tube 4, the second splicing tube 5 is opened, so that the first inner cavity 21 and the second inner cavity 31 are directly or indirectly connected.

[0050] In addition, a chamfer is formed at the end of the ejector pin 51 to facilitate insertion of the ejector pin into the valve port 41 .

[0051] The first splicing tube 4 has a tapered end 42 at the end away from the valve opening 41. The diameter of the tapered end 42 gradually decreases as it moves away from the first splicing tube 4, so that the inner cavity of the tapered end 42 at the end away from the first splicing tube 4 is smaller than the diameter of the sealing ball 43. As a result, the tapered end 42 and the valve opening 41 at both ends of the sealing ball 43 have smaller diameters, which confines the sealing ball 43 within the first splicing tube 4 and prevents it from falling out.

[0052] In order to drive the movement of the second combustion module 3, a drive mechanism is provided on the second combustion module 3 to drive the movement of the second combustion module 3 for splicing. A conventional transmission mechanism such as a motor drive wheel and a lead screw can be used, but the structure is relatively complex. Therefore, it is more preferred that the drive mechanism include a first magnetic sheet 6 and a second magnetic sheet 7 respectively provided on two adjacent combustion modules. The first magnetic sheet 6 and the second magnetic sheet 7 are arranged relative to each other and can be attracted to each other, so that the adjacent combustion modules are tightly fitted together to form a whole.

[0053] The first magnetic sheet 6 and the second magnetic sheet 7 can be electromagnetic sheets with opposite magnetic poles. When the electromagnetic sheet is energized, opposite poles attract each other, adsorbing and splicing adjacent combustion modules. In addition, the first magnetic sheet 6 can be a magnetic metal sheet and the second magnetic sheet 7 can be an electromagnetic sheet, or the first magnetic sheet 6 can be an electromagnetic sheet and the second magnetic sheet 7 can be a magnetic metal sheet, and the driving effect of mutual adsorption and adhesion can also be achieved. Conversely, when the adsorption force of the first magnetic sheet 6 and the second magnetic sheet 7 is small or disappears, the fuel pressure in the first inner cavity 21 pushes the ejector pin 51 through the sealing ball 43, separating the adjacent combustion modules.

[0054] Combine Figure 1 and Figure 4 As shown, a fire bar 8 is connected to the nozzle above, with each bar 8 corresponding to the nozzle. The nozzle sprays fuel, which passes through the fire bar 8 and reaches the top of the burner. A synchronous pulse igniter controls the ignition needle to ignite the fuel. The ignited fire bar 8 quickly spreads from the ignited position to the top of each row of ventilated fire bars 8. Fuels are generally natural gas, coal gas, or fuel oil, and the burner's fire bar 8 and nozzle structure only need to be adjusted accordingly.

[0055] The burner module can be controlled according to the outlet water temperature set by the user and the inlet water temperature monitored in real time, so as to achieve precise temperature control while reducing unnecessary energy consumption. Specifically, the mainboard controls the electromagnetic plates of the corresponding number of combustion modules to be energized, and the adjacent combustion modules are assembled under the guidance of the slide rail 1 through the magnetic force generated by the electromagnetic. The ejector pin 51 on the downstream combustion module pushes open the sealing ball 43 of the upstream combustion module, so that the second splicing tube 5 on the downstream combustion module and the first splicing tube 4 of the upstream combustion module are plugged in, and the first electromagnetic plate and the second electromagnetic plate are tightly sealed to complete the splicing. At this time, the gas can enter the downstream combustion module through the channel in the splicing tube, and the flame above the fire bar 8 can spread.

[0056] This embodiment further provides a household appliance including the aforementioned burner. Furthermore, the advantages of the aforementioned burner in this embodiment should also be possessed by the household appliance in this embodiment, and will not be further elaborated here. The household appliance in this embodiment may be a wall-mounted boiler, a water heater, or the like.

[0057] It will be understood that the present invention is described by way of some embodiments, and it will be appreciated by those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A burner, characterized in that: The first combustion module comprises a first inner cavity connected to a fuel feed pipe, and the second combustion module comprises a second inner cavity. The inner cavity of the combustion module is connected to a nozzle, which sprays fuel for combustion. The second combustion module can be moved relative to the first combustion module to be spliced together or separated from each other, so that the second inner cavity is connected to or separated from the first inner cavity, thereby controlling the opening and closing of each nozzle. The second combustion module is slidably connected to the slide rail, and the first combustion module is fixedly connected to the slide rail; the second combustion module can be close to the first combustion module and spliced into one piece, so that the second inner cavity is connected to the first inner cavity; the second combustion module can be separated from the first combustion module to separate the second inner cavity from the first inner cavity; The upstream combustion module is provided with a first splicing tube, and the downstream combustion module is provided with a second splicing tube. The second splicing tube is arranged opposite to the first splicing tube. The second splicing tube and the first splicing tube are plugged into each other to splice the first combustion module and the second combustion module.

2. The burner according to claim 1, characterized in that The first combustion module is fixed at one end of the slide rail, and the second combustion module is arranged beside the first combustion module.

3. The burner according to claim 2, characterized in that The slide rail is fixed with a positioning baffle, and the positioning baffle and the first combustion module are respectively located on both sides of the second combustion module to limit the stroke of the second combustion module.

4. The burner according to claim 1, characterized in that The second combustion module includes a transfer module and a terminal module. The transfer module is located between the first combustion module and the terminal module. The second inner cavity of the terminal module can be connected to the first inner cavity of the first combustion module through the second inner cavity of the transfer module.

5. The burner according to claim 1, characterized in that A valve structure is provided on the first splicing tube, the first combustion module and the second combustion module are separated, and the valve structure closes the first splicing tube.

6. The burner according to claim 5, characterized in that The valve structure includes a sealing ball located inside the first splicing tube. The end of the first splicing tube for inserting the second splicing tube is provided with a valve port; the sealing ball is plugged on the valve port by the fuel pressure in the inner cavity to close the first splicing tube.

7. The burner according to claim 6, characterized in that A thimble is provided in the second splicing tube, and the second splicing tube is inserted into the valve port. The thimble pushes the sealing ball to separate the sealing ball and the valve port, thereby communicating the first inner cavity with the second inner cavity.

8. The burner according to claim 6, characterized in that The first splicing tube is provided with a necked end at one end away from the valve port, and the necked end gradually reduces in diameter as it moves away from the first splicing tube, so that the inner cavity of the necked end away from the first splicing tube is smaller than the diameter of the sealing ball.

9. The burner according to claim 1 or 5, characterized in that A first magnetic sheet and a second magnetic sheet are respectively provided on two adjacent combustion modules. The first magnetic sheet and the second magnetic sheet are arranged opposite to each other and can be adsorbed to each other, so that the adjacent combustion modules are closely fitted together to be assembled into one.

10. A household appliance, characterized in that: The burner comprises the burner according to any one of claims 1 to 9.

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