Self-adaptive control method and device for premixed combustion and gas equipment

An adaptive control, premixed combustion technology, applied in the field of wall-hung boilers, can solve the problems of poor combustion conditions and the inability to adjust the air-fuel ratio adaptively, so as to avoid potential safety hazards.

Inactive Publication Date: 2020-12-29
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the air-fuel ratio of the fully premixed condensing gas wall-hung boiler in the prior art cannot be adaptively adjusted, resulting in poor combustion conditions, thereby providing an adaptive control of premixed combustion Method, device and gas equipment

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  • Self-adaptive control method and device for premixed combustion and gas equipment
  • Self-adaptive control method and device for premixed combustion and gas equipment
  • Self-adaptive control method and device for premixed combustion and gas equipment

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Embodiment 1

[0028] This embodiment provides an adaptive control method for premixed combustion, which is applied to the gas settings used by users, such as fully premixed condensing gas wall-hung boilers (full premixed wall-hung boilers for short), to avoid changes in gas types When the current air-fuel ratio is different from the most reasonable air-fuel ratio corresponding to the current type of gas, the problem that the fully premixed wall-hung boiler cannot achieve the best combustion conditions, such as figure 1 As shown, the adaptive control method of the premixed combustion includes the following steps:

[0029] S11. When the raw material for premixed combustion is changed from the first gas to the second gas, determine a target air-fuel ratio corresponding to the second gas.

[0030] Exemplarily, the target air-fuel ratio is the ratio between the corresponding air volume and the gas volume when the gas is in an optimal combustion state. The first gas is the historical gas used by...

Embodiment 2

[0073]This embodiment provides an adaptive control device for premixed combustion, which is applied to the gas settings used by users, such as fully premixed condensing gas wall-hung boilers (full premixed wall-hung boilers for short), to avoid changes in gas types When the current air-fuel ratio is different from the most reasonable air-fuel ratio corresponding to the current type of gas, the problem that the fully premixed wall-hung boiler cannot achieve the best combustion conditions, such as Figure 4 As shown, the adaptive control device for premixed combustion includes the following steps:

[0074] The determination module 21 is configured to determine the target air-fuel ratio corresponding to the second gas when the raw material for premixed combustion changes from the first gas to the second gas. For detailed description, refer to the relevant description of step S11 in the foregoing embodiment, and details are not repeated here.

[0075] The acquiring module 22 is c...

Embodiment 3

[0101] This embodiment provides a kind of gas equipment, such as Figure 5 As shown, the gas equipment includes a processor 31 and a memory 32, wherein the processor 31 and the memory 32 can be connected via a bus or in other ways, Figure 5 Take connection via bus as an example.

[0102] The processor 31 may be a central processing unit (Central Processing Unit, CPU). Processor 31 can also be other general-purpose processors, digital signal processor (Digital Signal Processor, DSP), graphics processing unit (Graphics Processing Unit, GPU), embedded neural network processor (Neural-network Processing Unit, NPU) or other Dedicated deep learning coprocessor, application specific integrated circuit (Application Specific Integrated Circuit, ASIC), field programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components and other chips, or a combination of the above-mentioned t...

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Abstract

The invention discloses an adaptive control method and device for premixed combustion and gas equipment. The adaptive control method for premixed combustion comprises the following steps of determining a target air-fuel ratio corresponding to second gas when premixed combustion raw materials are changed into the second gas from first gas; when the second fuel gas is adopted for premixed combustion, acquiring current state parameters used for representing the combustion state of the second fuel gas, and determining the current air-fuel ratio according to the current state parameters; and when the current air-fuel ratio does not conform to the target air-fuel ratio, adjusting the gas inlet amount and/or the air inlet amount. Through the implementation of the self-adaptive control method anddevice for premixed combustion and the gas equipment, the air-fuel ratio of the gas equipment can be guaranteed to be adjusted according to different kinds of gas, the optimal combustion state of thegas is guaranteed, and the potential safety hazards caused by abnormal combustion due to the fact that the air-fuel ratio is not suitable are avoided.

Description

technical field [0001] The invention relates to the technical field of wall-hung boilers, in particular to an adaptive control method and device for premixed combustion and gas equipment. Background technique [0002] At present, the fully premixed condensing gas wall-hung boilers on the market provide the air and gas required for combustion through the frequency conversion fan and the gas proportional valve. For the design and development of the wall-hung boiler, the designer has adjusted the speed of the frequency conversion fan and the zero position of the gas proportional valve, so that when the product burns at the rated power and the minimum power, the oxygen or carbon dioxide content in the flue gas is a predetermined value, so as to determine a good Air-fuel ratio, so that the combustion conditions are in the best state. Therefore, the fully premixed condensing gas wall-hung boilers usually used by users are only suitable for the gas types set before leaving the fac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23N5/20
CPCF23N5/203
Inventor 曾森许广宁金胜昔张标欧梦钦杨玉琼
Owner GREE ELECTRIC APPLIANCES INC
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