A new dual-fan gas variable power heater system

Abstract

The utility model discloses a novel double fan gas variable power heater system, include: heater, the outside fixed coupling of heater has pressure -reducing valve, the outer wall fixed coupling of heater has flame signal detector and CH4_CO leakage integrated alarm, the utility model relates to double fan gas heater technical field, this heater, through flame signal detector direct capture flame signal and real -time feedback, compared with traditional sensor, reaction speed promotes, can in the moment of ignition failure or accidental flameout trigger control module and close pressure -reducing valve, cut off gas source from the source, avoid the security hidden danger that does not burn gas leakage brings, through the cyclone structure of combustion chamber integration and make combustion air form steady cyclone, cooperate sintering felt net's airflow diffusion effect, let gas and air realize even mixing, reduce the detonation phenomenon of ignition stage and the local ablation problem in the combustion process from the root.

Description

Technical Field

[0001] This utility model relates to the technical field of dual-fan gas heaters, specifically a novel dual-fan variable power gas heater system. Background Technology

[0002] Gas heaters are widely used in various scenarios such as home heating, industrial plant insulation, and RV heating due to their advantages such as high heating efficiency and relatively low operating costs. However, as users' requirements for equipment safety, combustion stability, and environmental protection continue to increase, some shortcomings of traditional gas heaters have gradually been exposed.

[0003] In terms of safety protection, traditional gas heaters have significant deficiencies in risk control capabilities. Most of the flame monitoring sensors used in these devices have slow response speeds, often taking several seconds or even longer to detect abnormal signals after ignition failure or accidental flameout. During this process, unburned gas is prone to continuous leakage, creating safety hazards such as explosions and poisoning.

[0004] In terms of air volume control, the combustion fan and heating fan of traditional gas heaters are controlled by a single motor, and both are adjusted at the same speed. This makes it difficult to meet the requirements of adjusting the heating air volume while ensuring stable internal combustion. Often, when the heating speed needs to be adjusted, the internal combustion air volume also changes, resulting in uneven internal combustion mixture ratio and incomplete combustion. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a novel dual-fan variable power gas heater system, which solves the problems of slow response speed of flame monitoring sensors and air volume change control in traditional gas heaters.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A novel dual-fan variable power gas heater system includes: a heater, a pressure reducing valve fixedly connected to the outside of the heater, a pressure reducing valve bracket fixedly connected to the outer wall of the pressure reducing valve, a gas frequency valve fixedly connected to the outer wall of the pressure reducing valve bracket, and a flame signal detector and a CH4_CO leak integrated alarm fixedly connected to the outer wall of the heater; the heater includes a heat exchanger, a combustion chamber assembly and a fan assembly fixedly connected to the inner wall of the heat exchanger, a shell fixedly connected to the outer wall of the heat exchanger, a control module disposed inside the heat exchanger, and an air inlet pipe fixedly connected to the outer wall of the heat exchanger.

[0007] Preferably, the outer wall of the heat exchanger is fixedly connected to the outer wall of the flame signal detector and the CH4_CO leak integrated alarm, and the outer wall of the air inlet pipe is fixedly connected to the outer wall of the pressure reducing valve. External gas first enters the pressure reducing valve on the pressure reducing valve bracket of the system. The air inlet pipe on the heater is connected to the pressure reducing valve, and the external gas enters the heater through the air inlet pipe.

[0008] Preferably, the combustion chamber assembly includes a combustion chamber shell, a connecting plate is fixedly connected to the outer wall of the combustion chamber shell, an air nozzle is fixedly connected to the inner wall of the connecting plate, an ignition plug and a flame probe are fixedly connected to the inner wall of the connecting plate, a burner is fixedly connected to the outer wall of the connecting plate, and a sintered felt mesh is sleeved on the outer wall of the burner.

[0009] Preferably, the combustion chamber shell is fitted onto the outer wall of the sintered felt mesh, and the outer wall of the connecting plate is fixedly connected to the inner wall of the heat exchanger, so that the uniform diffusion of airflow is achieved through leakage of the sintered felt mesh.

[0010] Preferably, the fan assembly includes dual fan motors, with a connecting seat fixedly connected to the outer wall of the dual fan motors, a combustion-supporting fan rotatably connected to the inner wall of the dual fan motors, a bracket fixedly connected to the outer wall of the dual fan motors on the side away from the connecting seat, and a heating fan rotatably connected to the inner wall of the dual fan motors on the side away from the combustion-supporting fan.

[0011] Preferably, the outer wall of the bracket is fixedly connected to the inner wall of the heat exchanger, and the outer wall of the bracket is fixedly connected to the outer wall of the control module. The heat exchanger and the outer shell provide physical protection and form a complete heater assembly.

[0012] This utility model provides a novel dual-fan variable power gas heater system. It has the following beneficial effects: (i) This heater directly captures flame signals and provides real-time feedback through a flame signal detector. Compared with traditional sensors, the reaction speed is improved. It can trigger the control module to close the pressure reducing valve at the moment of ignition failure or accidental flameout, cutting off the gas source from the source and avoiding safety hazards caused by unburned gas leakage. The system is equipped with a CH4_CO leakage integrated alarm on the shell and a flame probe in the combustion chamber, forming dual monitoring of the gas passage and the core combustion area. Pre-start detection can block the start-up process with leakage risk, and real-time monitoring during operation can immediately capture leakage signals and simultaneously trigger gas source cut-off and audible and visual alarms, realizing full-cycle safety protection of prevention before the event and emergency response during the event.

[0013] (II) The combustion chamber assembly, through the integrated swirling structure of the combustion chamber, enables the combustion air to form a stable swirling flow. Combined with the airflow diffusion effect of the sintered felt net, it allows the gas and air to be mixed evenly, reducing the knocking phenomenon during the ignition stage and the local ablation problem during the combustion process from the root. At the same time, the sufficient gas-liquid mixing ensures complete combustion of the gas, reducing the emission of harmful gases such as carbon monoxide. This not only meets environmental protection requirements but also avoids energy loss caused by incomplete combustion. The combustion fan continuously provides a stable air volume, which, together with the gas supply of the variable power pressure reducing valve, forms a dynamic matching mechanism between air and gas, ensuring a continuous and stable flame. This eliminates the problems of flickering flame and combustion interruption caused by air-to-gas imbalance in traditional equipment, thus improving the reliability of equipment operation.

[0014] (III) The fan assembly adopts a dual-fan structure, which allows the combustion fan and the heating fan to be adjusted and controlled separately according to requirements, without interfering with each other. This ensures a good user experience without affecting the internal combustion effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the heater of this utility model; Figure 2 This is a schematic diagram of the internal structure of the heater of this utility model; Figure 3 This is a schematic diagram of the combustion chamber assembly of this utility model; Figure 4 This is a schematic diagram of the structure of the fan assembly of this utility model; Figure 5 This is a schematic diagram of the overall installation structure of this utility model; Figure 6 This is a schematic diagram of the overall process of this utility model; Figure 7 This is a schematic diagram of the overall control circuit board of this utility model.

[0016] In the diagram: 1. Pressure reducing valve; 2. Gas frequency valve; 3. Pressure reducing valve bracket; 4. Heater; 41. Heat exchanger; 411. Housing; 412. Control module; 413. Inlet pipe; 42. Combustion chamber assembly; 421. Combustion chamber shell; 422. Connecting plate; 423. Nozzle; 424. Ignition plug; 425. Flame probe; 426. Burner; 427. Sintered felt; 43. Fan assembly; 431. Dual fan motor; 432. Connecting seat; 433. Combustion fan; 434. Bracket; 435. Heating fan; 5. Flame signal detector; 6. CH4_CO leak integrated alarm. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-6 This utility model provides a technical solution: a novel dual-fan gas variable power heater system, comprising a heater 4, a pressure reducing valve 1 fixedly connected to the outside of the heater 4, a pressure reducing valve bracket 3 fixedly connected to the outside of the pressure reducing valve 1, and a gas frequency valve 2 fixedly connected to the outer wall of the pressure reducing valve bracket 3. The heater 4 is characterized by having a flame signal detector 5 and a CH4_CO leakage integrated alarm 6 fixedly connected to the outer wall of the heater 4. The heater 4 includes a heat exchanger 41, a combustion chamber assembly 42 and a fan assembly 43 fixedly connected to the inner wall of the heat exchanger 41, a shell 411 fixedly connected to the outer wall of the heat exchanger 41, a control module 412 disposed inside the heat exchanger 41, and an air inlet pipe 413 fixedly connected to the outer wall of the heat exchanger 41.

[0019] The outer wall of the heat exchanger 41 is fixedly connected to the outer wall of the flame signal detector 5 and the CH4_CO leak integrated alarm 6. The outer wall of the air inlet pipe 413 is fixedly connected to the outer wall of the pressure reducing valve 1. The external gas first enters the pressure reducing valve 1 on the pressure reducing valve bracket 3 of the system. The air inlet pipe 413 on the heater 4 is connected to the pressure reducing valve 1. The external gas enters the heater 4 through the air inlet pipe 413.

[0020] The combustion chamber assembly 42 includes a combustion chamber shell 421. A connecting plate 422 is fixedly connected to the outer wall of the combustion chamber shell 421. An air nozzle 423 is fixedly connected to the inner wall of the connecting plate 422. An ignition plug 424 and a flame probe 425 are fixedly connected to the inner wall of the connecting plate 422. A burner 426 is fixedly connected to the outer wall of the connecting plate 422. A sintered felt mesh 427 is sleeved on the outer wall of the burner 426.

[0021] The combustion chamber shell 421 is fitted onto the outer wall of the sintered felt mesh 427, and the outer wall of the connecting plate 422 is fixedly connected to the inner wall of the heat exchanger 41. Uniform diffusion of airflow is achieved through leakage of the sintered felt mesh 427.

[0022] The fan assembly 43 includes a dual fan motor 431. A connecting seat 432 is fixedly connected to the outer wall of the dual fan motor 431. A combustion-supporting fan 433 is rotatably connected to the inner wall of the dual fan motor 431. A bracket 434 is fixedly connected to the outer wall of the dual fan motor 431 on the side away from the connecting seat 432. A heating fan 435 is rotatably connected to the inner wall of the dual fan motor 431 on the side away from the combustion-supporting fan 433.

[0023] The outer wall of the bracket 434 is fixedly connected to the inner wall of the heat exchanger 41, and the outer wall of the bracket 434 is fixedly connected to the outer wall of the control module 412. The heat exchanger 41 and the outer shell 411 provide physical protection and form the heater 4 as a whole.

[0024] When in use, external gas first enters the pressure reducing valve 1 on the pressure reducing valve bracket 3 of the system. This pressure reducing valve 1 is different from the traditional constant power structure. It can adjust its own frequency to control the gas flow through the gas frequency valve 2. The gas inlet pipe 413 on the heater 4 is connected to the pressure reducing valve 1. The heat exchanger 41 and the outer shell (411) provide physical protection and form the heater 4 as a whole. The control module 412 on the bracket 434 will send an adjustment signal to the pressure reducing valve 1 according to the preset power requirements to initially control the gas output rate and lay the foundation for subsequent combustion power adjustment. Before startup, the built-in CH4_CO leak integrated alarm 6 and the flame probe 425 on the combustion chamber assembly 42 first detect leaks in the gas passage and the area around the combustion chamber. If no leak signal is detected, the control module 412 determines that the startup conditions are met and allows the system to enter the next stage; if a leak is detected, the control module 412 immediately cuts off the gas supply and triggers an audible and visual alarm. The control module 412 sends a command to the dual fan motor 431 in the fan assembly 43 to drive the two brushless motors to work respectively. The combustion fan 433 delivers combustion air to the combustion chamber. The airflow forms a stable vortex through the vortex structure of the combustion chamber. At the same time, the airflow is diffused uniformly through the volatilization diffusion of the sintered mesh and sintered felt mesh 427. The heating fan 435 starts synchronously. Its air volume can be independently adjusted according to the user's perceived temperature needs, and it reserves the air supply power for the subsequent heat exchange stage. The gas, regulated by the pressure reducing valve 1, is delivered to the jet nozzle 423 of the combustion chamber assembly 42 through the intake pipe 413. After being ejected, the gas mixes evenly with the swirling air from the combustion fan 433 under the action of the sintering mesh, avoiding excessively high or low local concentrations caused by airflow turbulence, thus reducing ignition knocking and uneven combustion problems. The control module 412 triggers the ignition plug 424 to generate high temperature and ignite the mixed gas. At the same time, the flame signal detector 5 immediately starts detection, directly capturing the flame signal and feeding it back to the control module 412 in real time. If the detector does not detect a flame in a very short time, the control module 412 quickly closes the pressure reducing valve 1 to cut off the gas supply and terminate the ignition process. If a stable flame is detected, the ignition is determined to be successful, and the system enters the stable combustion stage. The ignited mixed gas burns inside the combustion chamber shell 421. The swirling structure and sintered mesh work continuously to ensure that the gas and air are fully mixed, ensuring uniform and complete combustion and avoiding incomplete combustion or deflagration. The combustion-supporting fan 433 driven by the dual fan motor 431 always maintains a stable combustion-supporting air volume. Combined with the gas supply of the variable power pressure reducing valve 1, it ensures a continuous and stable combustion state. The control module 412 dynamically adjusts the parameters of the core components according to the real-time operating conditions to realize the "variable power" function. During combustion, the flame signal detector 5 continuously monitors the flame status. Once the flame goes out, it immediately sends a signal to the control module 412, which quickly cuts off the gas supply. At the same time, the leak alarm continuously monitors the gas leak situation. If a leak occurs, it immediately triggers the gas supply cut-off and audible and visual alarms. The control module 412 first sends a shut-off signal to the variable power pressure reducing valve 1 to cut off the gas input. The dual fan motor 431 continues to run for a period of time to discharge the residual gas and high-temperature flue gas in the combustion chamber, reducing the risk of residual heat in the equipment. After the residual heat is discharged, the dual fans stop working and the system enters a locked state. It can only be reactivated after the leak detection before the next start-up is passed.

[0025] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel dual-fan gas-fired variable power heater system, comprising: A heater (4), wherein a pressure reducing valve (1) is fixedly connected to the outside of the heater (4), a pressure reducing valve bracket (3) is fixedly connected to the outer wall of the pressure reducing valve (1), and a gas frequency valve (2) is fixedly connected to the outer wall of the pressure reducing valve bracket (3). The heater (4) is characterized in that a flame signal detector (5) and a CH4_CO leakage integrated alarm (6) are fixedly connected to the outer wall of the heater (4). The heater (4) includes a heat exchanger (41), the inner wall of which is fixedly connected to a combustion chamber assembly (42) and a fan assembly (43), the outer wall of which is fixedly connected to a shell (411), a control module (412) is provided inside the heat exchanger (41), and an air inlet pipe (413) is fixedly connected to the outer wall of the heat exchanger (41).

2. The novel dual-fan gas-fired variable power heater system according to claim 1, characterized in that: The outer wall of the heat exchanger (41) is fixedly connected to the outer wall of the flame signal detector (5) and the CH4_CO leakage integrated alarm (6), and the outer wall of the air inlet pipe (413) is fixedly connected to the outer wall of the pressure reducing valve (1).

3. The novel dual-fan gas-fired variable power heater system according to claim 1, characterized in that: The combustion chamber assembly (42) includes a combustion chamber shell (421), a connecting plate (422) is fixedly connected to the outer wall of the combustion chamber shell (421), a jet nozzle (423) is fixedly connected to the inner wall of the connecting plate (422), an ignition plug (424) and a flame probe (425) are fixedly connected to the inner wall of the connecting plate (422), a burner (426) is fixedly connected to the outer wall of the connecting plate (422), and a sintered felt mesh (427) is sleeved on the outer wall of the burner (426).

4. The novel dual-fan gas-fired variable power heater system according to claim 3, characterized in that: The combustion chamber shell (421) is fitted on the outer wall of the sintered felt mesh (427), and the outer wall of the connecting plate (422) is fixedly connected to the inner wall of the heat exchanger (41).

5. A novel dual-fan gas-fired variable power heater system according to claim 1, characterized in that: The fan assembly (43) includes a dual fan motor (431), a connecting seat (432) is fixedly connected to the outer wall of the dual fan motor (431), a combustion-supporting fan (433) is rotatably connected to the inner wall of the dual fan motor (431), a bracket (434) is fixedly connected to the outer wall of the dual fan motor (431) away from the connecting seat (432), and a heating fan (435) is rotatably connected to the inner wall of the dual fan motor (431) away from the combustion-supporting fan (433).

6. A novel dual-fan gas-fired variable power heater system according to claim 5, characterized in that: The outer wall of the bracket (434) is fixedly connected to the inner wall of the heat exchanger (41), and the outer wall of the bracket (434) is fixedly connected to the outer wall of the control module (412).

Images