Nozzle cleaning device, burner and wall-mounted boiler using the same

Abstract

The present invention provides a nozzle cleaning device, a burner using the device, and a wall-mounted boiler, relating to the technical field of wall-mounted boilers. The device comprises an ejector pin and a drive assembly connected to the ejector pin, which drives the ejector pin to reciprocate in the direction of the nozzle opening to unclog the nozzle. Based on the technical solution of the present invention, the ejector pin can fully unclog the burner nozzle, preventing dirt from accumulating within the nozzle and effectively preventing nozzle clogging. This not only ensures the long-term normal operation of the unit, but also significantly reduces the frequency of equipment maintenance, greatly improving the user experience.

Description

Technical Field

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

[0002] Wall-mounted boiler is the abbreviation of gas wall-mounted boiler. Its full name is "gas wall-mounted heating boiler". It is a water heater that uses natural gas as energy. It has multiple safety protection measures such as anti-freeze protection, anti-dry burning protection, accidental flameout protection, over-temperature protection, and water pump anti-stuck protection.

[0003] The general operating principle of a wall-mounted boiler is as follows: When the ignition switch is turned on, the fan starts first, creating a negative pressure differential in the combustion chamber. The air pressure switch then sends a command to the water pump. Once the water pump starts, the water flow switch sends a command to the high-voltage discharger, which then starts to send a command to the gas proportional valve, which begins to operate. The gas proportional valve, air pressure switch, and flue gas sensor are interlocked. The proportional valve only operates when there is a certain negative pressure in the combustion chamber. If the flue gas sensor detects no exhaust gas for 5 seconds, it shuts off the gas proportional valve, thus ensuring safe use of the gas.

[0004] In the actual use of wall-mounted boilers, over time, impurities such as gas impurities, air dust, and main heat exchanger verdigris will adhere to the burner nozzle, affecting the unit's combustion power and flue gas composition, and even causing the unit to fail to ignite and become inoperable. When the nozzle becomes clogged, manually unclogging the nozzle is a cumbersome task, a problem that has plagued countless wall-mounted boiler users and has become a practical problem that needs to be solved urgently. Summary of the Invention

[0005] The present invention provides a nozzle cleaning device for solving the problem of burner nozzle blockage. The device utilizes the reciprocating motion of a ejector pin to clean impurities in the nozzle, thereby preventing nozzle dirt from clogging the nozzle, ensuring normal use of the unit, and reducing the frequency of equipment maintenance.

[0006] The invention provides a nozzle cleaning device, comprising an ejector pin and a driving assembly transmission-connected to the ejector pin, wherein the driving assembly drives the ejector pin to reciprocate in the opening direction of the nozzle to clear the nozzle.

[0007] In one embodiment, the nozzle cleaning device further includes a push plate drivingly connected to the drive assembly, and at least one ejector is provided on the push plate. In this embodiment, each ejector corresponds to a respective nozzle of the burner. During cleaning, each ejector can simultaneously clean each nozzle, thereby ensuring the operating performance of the unit.

[0008] In one embodiment, the push plate is provided with at least one through-hole, and each of the through-holes is penetrated by a gas distributor rod on the burner. With this embodiment, when the push plate drives the ejector pin, the gas distributor rods penetrate the push plate through the through-holes, thereby preventing the gas distributor rods from interfering with the reciprocating motion of the push plate and ejector pin.

[0009] In one embodiment, the drive assembly includes an electromagnetic assembly fixedly connected to the push plate, and the electromagnetic assembly includes:

[0010] A piston chamber is provided on a side of the electromagnetic assembly facing the push plate;

[0011] a slider disposed in the piston cavity, slidably connected to the piston cavity and connected to the push plate; and

[0012] The elastic member is arranged in the piston cavity, one end of which abuts against the slider, and the other end abuts against the bottom of the piston cavity.

[0013] In one embodiment, a push rod is fixed on the slider, and one end of the push rod away from the slider is fixedly connected to the push plate.

[0014] In one embodiment, the ejector includes a thick rod section for securing the push plate, and a thin rod section for inserting the nozzle is coaxially disposed at one end of the thick rod section, distal from the push plate. With this embodiment, when the ejector is inserted into the nozzle, the thin rod section enters the nozzle first. This thin rod section not only serves as a guide, preventing the ejector from colliding with the nozzle due to misalignment, but also acts like a needle to remove stubborn dirt within the nozzle, facilitating its removal. Once the thick rod section enters the nozzle, it rubs against the nozzle's inner wall, separating impurities adhering to the nozzle's inner wall, thereby ensuring effective nozzle cleaning.

[0015] In one embodiment, the outer wall of the ejector pin is provided with at least one protrusion and / or depression. In this embodiment, the protrusions and / or depressions on the ejector pin can form a pattern. When the ejector pin is inserted into the nozzle, it rubs against the inner wall of the nozzle. These protrusions and / or depressions can enhance the scraping effect of the ejector pin on the inner wall of the nozzle, thereby improving the nozzle cleaning effect.

[0016] The present invention also provides a burner comprising the nozzle cleaning device.

[0017] In one embodiment, the burner further comprises nozzles, and the number of the nozzles corresponds one-to-one to the number of the ejector pins.

[0018] The present invention also provides a wall-mounted boiler comprising the burner.

[0019] In summary, compared with the prior art, the beneficial technical effects of the present invention are: the driving component drives the ejector pin to reciprocate in the nozzle, thereby achieving the effect of unclogging the nozzle, avoiding the accumulation of dirt in the nozzle, and effectively preventing the nozzle from being blocked. This not only ensures the long-term normal operation of the unit, but also greatly reduces the maintenance frequency of the equipment, greatly improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings, wherein:

[0021] Figure 1 This is a schematic diagram of the overall structure of a nozzle cleaning device in Example 1 of the present invention;

[0022] Figure 2 It is a structural schematic diagram of a burner in Example 2 of the present invention.

[0023] Figure numerals: 1, push plate; 2, ejector pin; 21, thick rod section; 22, thin rod section; 3, air distributor rod; 4, electromagnetic assembly; 5, ejector rod; 6, piston chamber; 7, slider; 8, elastic part; 9, nozzle. DETAILED DESCRIPTION

[0024] The present invention will be described clearly and completely below with reference to the accompanying drawings.

[0025] Example 1:

[0026] See attached Figure 1-2 A nozzle cleaning device includes a push plate 1 horizontally positioned below a burner nozzle 9. A plurality of ejector pins 2 are vertically fixed to the push plate 1 at even intervals along its length, with each ejector pin 2 facing a respective burner nozzle 9. A drive assembly, connected to the push plate 1, is also located at the bottom of the burner. During operation, the drive assembly drives each ejector pin 2 in a reciprocating motion up and down via the push plate 1. The ejector pins 2 extend and retract within the nozzle 9, clearing the nozzle 9 and effectively preventing clogging.

[0027] In this embodiment, the ejector pin 2 can be detachably mounted on the push plate 1, facilitating subsequent maintenance and repair. Furthermore, to ensure effective cleaning of the nozzle 9, the ejector pin 2 can be configured as a large and small shaft structure. Specifically, the ejector pin 2 comprises a thick rod section 21 fixedly connected to the push plate 1, with a thin rod section 22 coaxially mounted on the end of the thick rod section 21 distal from the push plate 1. The thick and thin rod sections 21 and 22 can be integrally formed or designed as two fixedly connected components, facilitating subsequent maintenance and repair.

[0028] In actual work, when the ejector pin 2 is inserted into the nozzle 9, the thin rod section 22 enters the nozzle 9 first. On the one hand, the thin rod section 22 plays a guiding role to prevent the ejector pin 2 from colliding with the nozzle 9 due to inaccurate positioning. On the other hand, the thin rod section 22 can also have a needle-like effect on stubborn dirt in the nozzle 9, facilitating the discharge of dirt. After the thick rod section 21 is inserted into the nozzle 9, it will rub against the inner wall of the nozzle 9, separating the impurities attached to the inner wall of the nozzle 9 from it, thereby ensuring the cleaning effect of the nozzle 9.

[0029] In another embodiment, at least one protrusion and / or depression can be provided on the outer wall of ejector pin 2. Preferably, the protrusion and / or depression extend axially along the outer wall of the ejector pin, and the protrusions and / or depressions can collectively form a texture. In this manner, after ejector pin 2 is inserted into nozzle 9, it rubs against the inner wall of nozzle 9. These protrusions and / or depressions enhance the scraping effect of ejector pin 2 on the inner wall of nozzle 9, thereby improving the cleaning effect of nozzle 9.

[0030] Considering the presence of the gas distribution rod 3 in the burner, in order to prevent the gas distribution rod 3 from interfering with the movement of the push plate 1 and the ejector pin 2, the push plate 1 is provided with multiple through holes, each of which can be evenly spaced along the length of the push plate 1. During installation, each gas distribution rod 3 of the burner is respectively penetrated by a through hole.

[0031] See attached Figure 1-2 The driving assembly includes an electromagnetic assembly 4 fixedly arranged at the bottom of the burner. The electromagnetic assembly 4 is fixedly connected to the push plate 1 and is used to drive the push plate 1 to move.

[0032] In this embodiment, the electromagnetic assembly 4 can be a solenoid valve or other components that operate using the same principle. When the electromagnetic assembly 4 is a solenoid valve, the solenoid valve is connected to the push plate 1, and a piston chamber 6 is provided at the connection point between the solenoid valve and the push plate 1. The piston chamber 6 is provided with a slider 7 that is slidably connected thereto, and an elastic member 8 is embedded in the bottom of the piston chamber 6.

[0033] In this embodiment, the elastic member 8 can be a spring, with one end of the spring abutting the bottom of the piston chamber 6 and the other end abutting the slider 7. Furthermore, a push rod 5 is fixedly connected to the side of the slider 7 facing away from the spring, and the end of the push rod 5 away from the slider is fixedly connected to the push plate 1. It should be noted that in addition to springs, the elastic member can also be other elastic components, such as rubber components, and this is not a specific limitation.

[0034] In actual operation, the solenoid valve uses electromagnetic force to drive the slider 7 and ejector rod 5 away from the nozzle 9, thereby simultaneously moving the ejector pins 2 away from the nozzle 9 via the push plate 1. When the solenoid valve is de-energized, the spring is released, and the slider 7 begins to move under the spring force. This, in turn, drives the push plate 1 and ejector pins 2 toward the nozzle via the ejector rod 5 until the spring resets. This cycle completes the reciprocating motion of the ejector pins 2 within the nozzle 9, completing the cleaning of the nozzle 9.

[0035] Example 2:

[0036] See attached Figure 2 , a burner, comprising a nozzle 9 and the above-mentioned nozzle cleaning device; wherein the number of nozzles 9 corresponds one to one with the number of ejector pins 2 on the nozzle cleaning device.

[0037] In actual use of the burner, the nozzle cleaning device is usually used when the burner is not in operation. In the non-combustion state, the ejector pin 2 is controlled by the solenoid valve and the spring to move back and forth 3-5 times a day, so that the nozzle 9 can be cleaned daily, effectively preventing dirt from accumulating in the nozzle 9.

[0038] Example 3:

[0039] A wall-mounted boiler comprises the burner mentioned above.

[0040] In the description of the present invention, it should be understood that terms such as "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "left", and "right" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0041] While the present invention has been described with reference to preferred embodiments, various modifications may be made and equivalent components may be substituted without departing from the scope of the present invention. In particular, the various technical features described in the various embodiments may be combined in any manner, provided no structural conflicts exist. The present invention is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A nozzle cleaning device, characterized in that: The nozzle cleaning device comprises a push pin (2) and a driving assembly connected to the push pin (2), wherein the driving assembly drives the push pin (2) to reciprocate in the opening direction of the nozzle (9) to clear the nozzle (9); the nozzle cleaning device further comprises a push plate (1), wherein the push plate (1) is in transmission connection with the driving assembly, and a plurality of the push pins (2) are arranged at intervals on the push plate (1); at least one through hole is formed through the push plate (1), and each of the through holes is respectively penetrated by a gas distribution rod on the burner (3); the ejector pin (2) comprises a thick rod section (21) for fixing the push plate (1); a thin rod section (22) for inserting the nozzle (9) is coaxially provided at one end of the thick rod section (21) away from the push plate (1); the outer diameter of the thin rod section is smaller than the outer diameter of the thick rod section, and the thick rod section can extend into the nozzle and rub against the inner wall of the nozzle; at least one protrusion and / or depression is provided on the outer wall of the ejector pin (2), and the protrusion and / or depression extends along the axial direction of the outer wall of the ejector pin (2).

2. A nozzle cleaning device according to claim 1, characterized in that: The driving assembly comprises an electromagnetic assembly (4) fixedly connected to the push plate (1), and the electromagnetic assembly (4) comprises: A piston chamber (6) is provided on a side of the electromagnetic assembly (4) facing the push plate (1); A slider (7) is disposed in the piston cavity (6), is slidably connected to the piston cavity (6), and is connected to the push plate (1); and An elastic member (8) is disposed in the piston cavity (6), with one end thereof abutting against the slider (7) and the other end abutting against the bottom of the piston cavity (6).

3. A nozzle cleaning device according to claim 2, characterized in that: A push rod (5) is fixed on the slider (7), and one end of the push rod (5) away from the slider (7) is fixedly connected to the push plate (1).

4. A burner, characterized in that: The nozzle cleaning device comprises the nozzle cleaning device according to any one of claims 1 to 3.

5. A burner according to claim 4, characterized in that: The burner further comprises nozzles (9), and the number of the nozzles (9) corresponds one-to-one to the number of the ejector pins (2).

6. A wall-mounted boiler, characterized in that: Comprising a burner as claimed in claim 4 or 5.

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