Feedback device of multi-section burner and gas water heater

Abstract

The utility model discloses a feedback device of a multi-section burner and a gas water heater. The feedback device comprises a plurality of fire grates, a plurality of gas distribution cavities are defined in the gas distribution rod, each gas distribution cavity is communicated with a nozzle, the number of the nozzles is the same as that of the fire rows, and the nozzles and the fire rows are in one-to-one correspondence; the air inlet end of the sectionalizer is communicated with external air supply, and the air outlet end of the sectionalizer is correspondingly communicated with the plurality of air distribution cavities respectively; and the multiple pressure sensors are arranged at the air inlet ends of the multiple air distribution cavities correspondingly, and the sectionalizer is controlled to act according to data detected by the multiple pressure sensors so as to open or close the corresponding air distribution cavities. The multi-section combustor is simple in structure, closed-loop control over the multi-section combustor is achieved by judging whether the sectionalizer executes according to set signals or not, and then potential safety hazards caused by the fact that the sectionalizer does not act can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a feedback device for a multi-segment burner and a gas-fired water heater. Background Technology

[0002] To address the issue of excessively high water temperature during summer showers, most manufacturers of complete sets of equipment adopt a segmented combustion technology. However, this solution only adds a segmented valve to the gas passage and controls the opening and closing of the segmented valve through electronic circuitry, without providing feedback and monitoring of the valve's operation.

[0003] In addition, when the valve core of the segmented valve becomes stuck, the controller may send an open or close valve signal, but the segmented valve may not perform the corresponding action, which poses a safety hazard. Summary of the Invention

[0004] This utility model aims to solve, at least to some extent, one of the problems existing in the prior art. To this end, this utility model proposes a feedback device for a multi-segment burner. Its structure is simple. By judging whether the segmenter executes according to the predetermined signal, the closed-loop control of the multi-segment burner can be realized, and the safety hazards caused by the segmenter not operating can also be avoided.

[0005] In addition, this utility model proposes a gas-fired water heater with a reasonable design that can effectively improve the user experience.

[0006] The first objective mentioned above is achieved through the following technical solution:

[0007] A feedback device for a multi-stage burner, comprising:

[0008] Several fire pits;

[0009] The gas distribution rod has multiple gas distribution chambers defined within it. Each gas distribution chamber is connected to a nozzle. The number of nozzles is the same as the number of fire bars and corresponds one-to-one.

[0010] The segmenter has an air inlet connected to an external air supply and an air outlet connected to a plurality of air distribution chambers respectively.

[0011] Multiple pressure sensors are respectively installed on the air inlet end of multiple air distribution chambers. The operation of the segmenter is controlled according to the data detected by the multiple pressure sensors to open or close the corresponding air distribution chamber.

[0012] In some embodiments, a main air chamber, a first air chamber, and a second air chamber are defined within the air distribution rod, wherein the air inlet of the main air chamber is connected to a main air distribution pipe, the air inlet of the first air chamber is connected to a first air distribution pipe, and the air inlet of the second air chamber is connected to a second air distribution pipe. Pressure sensors are respectively provided on the first air distribution pipe and the second air distribution pipe to switch the first air chamber and / or the second air chamber on and off.

[0013] In some embodiments, the main air chamber, the first air chamber, and the second air chamber are arranged side by side and perpendicular to the burner.

[0014] In some embodiments, a mounting bracket is also included for mounting the gas distribution rod, the mounting bracket being fixed to one end of the burner, and both ends of the gas distribution rod being fixed to the mounting bracket by bolts.

[0015] In some embodiments, the segmenter has an inlet pipe, a main segment pipe, a first segment pipe, and a second segment pipe connected together. The inlet pipe is connected to an external air supply. The main segment pipe is connected to the main distribution pipe at its end away from the inlet pipe. The first segment pipe is connected to the first distribution pipe at its end away from the inlet pipe. The second segment pipe is connected to the second distribution pipe at its end away from the inlet pipe. Segmentation valves are respectively provided on the first segment pipe and the second segment pipe.

[0016] In some embodiments, mounting ports are provided on the side walls of the first and second air distribution pipes, and the pressure sensors are respectively disposed at the mounting ports.

[0017] In some embodiments, a protruding tube is provided on the side wall of the first air distribution pipe and the second air distribution pipe, and a through hole is opened on the end of the protruding tube away from the first air distribution pipe and the second air distribution pipe to form the mounting port. The sensing end of the pressure sensor is installed in the protruding tube after passing through the mounting port.

[0018] The second objective mentioned above is achieved through the following technical solution:

[0019] A gas-fired hot water boiler is characterized by including a multi-segment burner feedback device as described in any of the above embodiments.

[0020] Compared with the prior art, the present invention has at least the following beneficial effects:

[0021] 1. The feedback device of the multi-segment burner of this utility model has a simple structure. By judging whether the segmenter executes according to the predetermined signal, the closed-loop control of the multi-segment burner can be realized, and the safety hazards caused by the segmenter not operating can also be avoided. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the multi-segment burner feedback device in an embodiment of this utility model;

[0024] Figure 2 This is an exploded view of the multi-segment burner feedback device in an embodiment of this utility model;

[0025] Figure 3 This is a cross-sectional view of the multi-segment burner feedback device in an embodiment of this utility model. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of the claimed invention.

[0028] Example:

[0029] like Figures 1 to 3 As shown, this embodiment provides a feedback device for a multi-segment burner, including:

[0030] Several fire rows 1;

[0031] The gas distribution rod 2 has multiple gas distribution chambers 21 defined within it. Each gas distribution chamber 21 is connected to a nozzle. The number of nozzles is the same as the number of fire bars 1 and corresponds one-to-one.

[0032] Sectioner 3, the air inlet of sectioner 3 is connected to the external air supply, and its air outlet is connected to multiple air distribution chambers 21 respectively.

[0033] Multiple pressure sensors 4 are respectively installed on the air inlet end of multiple air distribution chambers 21. The segmenter 3 is controlled to open or close the corresponding air distribution chamber 21 based on the data detected by the multiple pressure sensors 4.

[0034] In this embodiment, multiple independently configured gas distribution chambers 21 are defined within the gas distribution rod 2. Each gas distribution chamber 21 is connected to a nozzle, and the number of nozzles corresponds one-to-one with the number of burner bars 1. This allows the burner to have the same number of independent combustion zones as the number of nozzles. The air inlet of the segmenter 3 is connected to an external gas supply to supply gas to the segmenter 3. Its outlet is connected to the multiple gas distribution chambers 21 respectively, so that the external gas supply enters the multiple gas distribution chambers 21 after passing through the air inlet and outlet of the segmenter 3. Since a pressure gauge is provided at the air inlet of each gas distribution chamber 21... Force sensor 4 detects the air pressure at the air inlet of the gas distribution chamber 21 to obtain the air pressure magnitude, thereby determining the combustion condition of that section of the burner 1, and further determining whether the segmenter 3 executes according to the predetermined signal. Then, based on the data obtained by each pressure sensor 4, the action of the segmenter 3 is controlled to open or close the corresponding gas distribution chamber 21, thereby realizing closed-loop control of the multi-segment burner. Its structure is simple. By determining whether the segmenter 3 executes according to the predetermined signal, closed-loop control of the multi-segment burner is achieved, and safety hazards caused by the segmenter 3 not operating can also be avoided.

[0035] In this embodiment, the feedback device of the multi-segment burner is preferably applied to a gas-fired hot water boiler, a gas-fired heating hot water boiler, or a gas-fired water heater.

[0036] Furthermore, a main air chamber 211, a first air chamber 212, and a second air chamber 213 are defined within the air distribution rod 2. The air inlet end of the main air chamber 211 is connected to a main air distribution pipe 214, the air inlet end of the first air chamber 212 is connected to a first air distribution pipe 215, and the air inlet end of the second air chamber 213 is connected to a second air distribution pipe 216. Pressure sensors 4 are respectively installed on the first air distribution pipe 215 and the second air distribution pipe 216 to switch the first air chamber 212 and / or the second air chamber 213.

[0037] Preferably, the main air chamber 211, the first air chamber 212, and the second air chamber 213 are arranged side by side and perpendicular to the fire bar 1. This structure is simple and can effectively reduce the installation space.

[0038] Furthermore, it also includes a mounting bracket 25 for mounting the gas distribution rod 2. The mounting bracket 25 is fixed to one end of the burner 1, and both ends of the gas distribution rod 2 are fixed to the mounting bracket 25 by bolts. Its structure is simple and facilitates the installation of the gas distribution rod 2 on the burner 1 through the mounting bracket 25.

[0039] Preferably, the segmenter 3 has an inlet pipe 31, a main segment pipe 32, a first segment pipe 33, and a second segment pipe 34 that are connected together. The inlet pipe 31 is connected to an external air supply. The main segment pipe 32 is connected to a main air distribution pipe 214 at the end away from the inlet pipe 31. The first segment pipe 33 is connected to a first air distribution pipe 215 at the end away from the inlet pipe 31. The second segment pipe 34 is connected to a second air distribution pipe 216 at the end away from the inlet pipe 31. Segmentation valves 35 are respectively provided on the first segment pipe 33 and the second segment pipe 34.

[0040] Specifically, mounting ports 23 are provided on the side walls of the first air distribution pipe 215 and the second air distribution pipe 216, and pressure sensors 4 are respectively installed at the mounting ports 23.

[0041] Specifically, a protruding tube 24 is provided on the side wall of the first air distribution pipe 215 and the second air distribution pipe 216. The protruding tube 24 has a through hole at the end away from the first air distribution pipe 215 and the second air distribution pipe 216 to form an installation port 23. The sensing end of the pressure sensor 4 is installed in the protruding tube 24 after passing through the installation port 23.

[0042] In this embodiment, multiple air distribution chambers 21 are defined within the air distribution rod 2. Each air distribution chamber 21 has an independently configured main air chamber 211, a first air chamber 212, and a second air chamber 213. This allows the first air chamber 212 and the second air chamber 213 to be located on the left and right sides of the main air chamber 211, respectively. The air inlet of the main air chamber 211 is connected to the main distribution pipe 32 via the main air distribution pipe 214, and the air outlet of the main air chamber 211 is connected to multiple nozzles, so that external air supply goes directly to the main air chamber 211 after passing through the main distribution pipe 32. Gas is output from the first gas chamber 212. The inlet end of the first gas chamber 212 is connected to the first segmented pipe 33 through the first gas distribution pipe 215, and the outlet end of the first gas chamber 212 is also connected to multiple nozzles, so that the external gas supply is output to the first gas chamber 212 after passing through the first segmented pipe 33. The inlet end of the second gas chamber 213 is connected to the second segmented pipe 34 through the second gas distribution pipe 216, and the outlet end of the second gas chamber 213 is also connected to multiple nozzles, so that the external gas supply is output to the second gas chamber 213 after passing through the second segmented pipe 34.

[0043] Furthermore, the intake end of the intake pipe 31 is connected to an external gas supply, and its outlet end is connected to the main branch pipe 32, the first branch pipe 33, and the second branch pipe 34 respectively. Since pressure sensors 4 are respectively installed on the first branch pipe 215 and the second branch pipe 216, and sectional valves 35 are respectively installed on the first branch pipe 33 and the second branch pipe 34, the pressure sensors 4 in the first branch pipe 215 and the second branch pipe 216 can detect the gas pressure of the gas in the pipes, thereby obtaining the gas pressure status of the first branch pipe 215 and the second branch pipe 216 respectively. That is, there is no sectional valve 35 in the middle of the main gas chamber 211, while the gas in the first gas chamber 212 is supplied by the intake pipe 31. After entering the first segmented pipe 33, the gas flows through the segmented valve 35 and then onto the first gas chamber 212. Similarly, the gas in the second gas chamber 213 enters the second segmented pipe 34 through the inlet pipe 31 and then flows through the segmented valve 35 before onto the second gas chamber 213. This allows the combustion status of the first and second gas chambers 212 and 213 to be controlled by the opening and closing of the corresponding segmented valves 35. By monitoring the signal status of the pressure sensor 4, the combustion condition of the burner section 1 is determined, and it is then determined whether the segmented valves 35 on the first and second segmented pipes 33 and 34 are executing according to the predetermined signals. This achieves closed-loop control of the multi-segmented burner, thereby avoiding safety hazards caused by the malfunction of the segmented valves 35.

[0044] In this embodiment, mounting ports 23 are provided on the side walls of the first gas distribution pipe 215 and the second gas distribution pipe 216. These mounting ports 23 are connected to the inside of the pipes. When the pressure sensor 4 is fixed to the mounting port 23, the pressure of the gas in the pipes can be detected by the pressure sensor 4. When the corresponding gas distribution chamber 21 has a combustion requirement, the corresponding segment valve 35 of the gas distribution chamber 21 is opened. The pressure sensor 4 detects a "pressure present" signal in the channel and feeds this signal back to the controller. After receiving the signal from the pressure sensor 4, the controller determines that the segment valve 35 corresponding to the gas distribution chamber has executed an opening command. Conversely, when the corresponding gas distribution chamber 21 does not have a combustion requirement, if the controller receives a "no pressure" signal from the pressure sensor 4, it determines that the segment valve 35 has executed a closing command.

[0045] More preferably, when the controller issues an opening command to any segment valve 35 on the first segment pipe 33 or the second segment pipe 34, it monitors the "pressure present" signal fed back by the corresponding pressure sensor 4, or when the controller issues a closing command to any segment valve 35 on the first segment pipe 33 or the second segment pipe 34, it monitors the "no pressure" signal fed back by the corresponding pressure sensor 4, indicating a normal combustion state. Otherwise, it is judged as an abnormal combustion state, thereby triggering the corresponding abnormal alarm signal and preventing the heating boiler from operating in an abnormal state.

[0046] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A feedback device for a multi-stage burner, characterized in that, include: Several fire racks (1); The gas distribution rod (2) has multiple gas distribution chambers (21) defined in it. Each gas distribution chamber (21) is connected to a nozzle. The number of nozzles is the same as the number of fire bars (1) and corresponds one-to-one. The segmenter (3) has an air inlet connected to an external air supply and an air outlet connected to a plurality of the air distribution chambers (21). Multiple pressure sensors (4) are respectively installed on the air inlet end of multiple air distribution chambers (21). The segmenter (3) is controlled to open or close the corresponding air distribution chamber (21) based on the data detected by the multiple pressure sensors (4).

2. The feedback device for a multi-segment burner according to claim 1, characterized in that, The main air chamber (211), the first air chamber (212), and the second air chamber (213) are defined in the air distribution rod (2). The air inlet end of the main air chamber (211) is connected to the main air distribution pipe (214), the air inlet end of the first air chamber (212) is connected to the first air distribution pipe (215), and the air inlet end of the second air chamber (213) is connected to the second air distribution pipe (216). The pressure sensor (4) is respectively provided on the first air distribution pipe (215) and the second air distribution pipe (216) to switch the first air chamber (212) and / or the second air chamber (213).

3. The feedback device for a multi-segment burner according to claim 2, characterized in that, The main air chamber (211), the first air chamber (212) and the second air chamber (213) are arranged side by side and perpendicular to the fire bar (1).

4. The feedback device for a multi-segment burner according to claim 3, characterized in that, It also includes a mounting bracket (25) for mounting the gas distribution rod (2), the mounting bracket (25) being fixed to one end of the burner (1), and both ends of the gas distribution rod (2) being fixed to the mounting bracket (25) by bolts.

5. The feedback device for a multi-segment burner according to claim 2, characterized in that, The segmenter (3) has an inlet pipe (31), a main segment pipe (32), a first segment pipe (33), and a second segment pipe (34) connected together. The inlet pipe (31) is connected to an external air supply. The main segment pipe (32) is connected to the main air distribution pipe (214) at the end away from the inlet pipe (31). The first segment pipe (33) is connected to the first air distribution pipe (215) at the end away from the inlet pipe (31). The second segment pipe (34) is connected to the second air distribution pipe (216) at the end away from the inlet pipe (31). Segmentation valves (35) are respectively provided on the first segment pipe (33) and the second segment pipe (34).

6. The feedback device for a multi-segment burner according to claim 2, characterized in that, An installation port (23) is provided on the side wall of the first air distribution pipe (215) and the second air distribution pipe (216), and the pressure sensor (4) is respectively installed at the installation port (23).

7. The feedback device for a multi-segment burner according to claim 6, characterized in that, A protruding tube (24) is provided on the side wall of the first air distribution pipe (215) and the second air distribution pipe (216). The protruding tube (24) has a through hole at one end away from the first air distribution pipe (215) and the second air distribution pipe (216) to form the mounting port (23). The sensing end of the pressure sensor (4) is installed in the protruding tube (24) after passing through the mounting port (23).

8. A gas-fired hot water boiler, characterized in that, The feedback device includes the multi-segment burner as described in any one of claims 1 to 7.

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