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CN-121993819-A - Liquid fuel combustion device with high heat utilization rate and noise reduction

CN121993819ACN 121993819 ACN121993819 ACN 121993819ACN-121993819-A

Abstract

The invention discloses a liquid fuel combustion device with high heat utilization rate and noise reduction, which sequentially comprises an inner cylinder body, an outer cylinder body and a combustion cylinder body A from inside to outside, wherein a central air inlet is formed at the bottom of an inner cylinder cavity of the inner cylinder body, a hot air annular cavity is formed between the outer wall of the inner cylinder body and the inner wall of the outer cylinder body, a secondary combustion chamber is arranged in the combustion cylinder body B, a heat exchange cylinder body is connected to the outer part of the upper part of the outer cylinder body, a heat exchange cavity is arranged in the heat exchange cylinder body, a central air outlet communicated with the heat exchange cavity is formed at the top of the inner cylinder body, a hot air inlet is formed at the top of the outer cylinder body, a hot air outlet is formed at the bottom of the outer cylinder body, and an oil inlet pipe and an ignition plug are correspondingly connected to the primary combustion chamber. The invention is structurally divided into two stages of combustion chambers, the combustion is managed in a grading way, the fuel is fully mixed with air gradually, the fuel in the two stages of combustion chambers is fully mixed and fully combusted, the combustion heat field is balanced and stable, the noise is reduced, and the combustion stability and the combustion efficiency are improved.

Inventors

  • LI JINGJIE
  • WANG PENGCHENG

Assignees

  • 李竞劼

Dates

Publication Date
20260508
Application Date
20260326

Claims (10)

  1. 1. A liquid fuel combustion device with high heat utilization rate and noise reduction is characterized by comprising a mixed combustion integrated assembly (2) and a combustion cylinder B (4) which is connected to the top of the mixed combustion integrated assembly (2) in a sealing manner, wherein the mixed combustion integrated assembly (2) sequentially comprises an inner cylinder (21), an outer cylinder (22) and a combustion cylinder A (23) from inside to outside, a central air inlet (211) is formed at the bottom of an inner cylinder cavity (210) of the inner cylinder (21), a hot air annular cavity (220) is formed between the outer wall of the inner cylinder (21) and the inner wall of the outer cylinder (22), a secondary combustion chamber (41) is formed inside the combustion cylinder B (4), a heat exchange cylinder (3) arranged inside the secondary combustion chamber (41) is connected to the outer sealing package at the upper part of the outer cylinder (22), a heat exchange chamber (31) is formed inside the heat exchange cylinder (3), a primary combustion chamber (230) communicated with the secondary combustion chamber (41) is formed inside the combustion cylinder A (23), the top of the inner cylinder cavity (210) of the inner cylinder (21) is provided with a central air inlet (211) communicated with the heat exchange chamber (31), and the annular air inlet (220) is communicated with the top of the outer cylinder (22) and the annular cavity (230) is communicated with the air inlet (220) A hot air outlet (222) of the hot air annular cavity (220), and an oil inlet pipe (8) and an ignition plug (7) are correspondingly connected in the primary combustion chamber (230).
  2. 2. The liquid fuel combustion device with high heat utilization rate and noise reduction according to claim 1, wherein the oil inlet pipe (8) is used for entering fuel oil and fully mixing with hot air containing combustion improver in the primary combustion chamber (230) through the hot air outlet (222), igniting and burning in the primary combustion chamber (230) and secondary combustion in the secondary combustion chamber (41), cold air containing combustion improver is input into the heat exchange cylinder (3) through the inner cylinder (21) and is heated with the secondary combustion chamber (41) to form hot air containing combustion improver, and the hot air containing combustion improver is introduced into the primary combustion chamber (230) through the hot air annular cavity (220) and fully mixed with the fuel oil.
  3. 3. The liquid fuel combustion device with high heat utilization rate and noise reduction as set forth in claim 1, wherein the mixed combustion integrated assembly (2) is externally connected with a wind cavity shell (1), and the wind cavity shell (1) is provided with a wind inlet corresponding to the central wind inlet (211) and a wind inlet fan matched with the wind inlet.
  4. 4. A liquid fuel combustion device with high heat utilization rate and noise reduction according to claim 3 is characterized in that an air inlet chamber (11) is arranged in the air cavity shell (1), an air collecting device (25) for guiding air flow towards a central air inlet (211) is arranged at the bottom of the inner cylinder (21), a connecting lug plate A (12) is arranged at the top of the air cavity shell (1), the mixed combustion integrated assembly (2) further comprises an outer connecting cylinder body (24) positioned outside the combustion cylinder body A (23), a connecting lug plate B is arranged at the top of the outer connecting cylinder body (24), and the connecting lug plate A (12) is connected with the connecting lug plate B in a sealing mode through a sealing plate (6).
  5. 5. The liquid fuel combustion device with high heat utilization rate and noise reduction according to claim 1, wherein the mixed combustion integrated assembly (2) is provided with a sealing bottom plate, the sealing bottom plate is connected between the bottom of the inner cylinder body (21) and the bottom of the combustion cylinder body A (23), the outer cylinder body (22) is sleeved outside the inner cylinder body (21) and forms the hot air annular cavity (220), the top end of the outer cylinder body (22) is in threaded sealing connection with the top end of the inner cylinder body (21), the outer wall of the upper part of the outer cylinder body (22) is provided with a connecting annular plate (33), and the bottom end of the heat exchange cylinder body (3) is in detachable threaded sealing connection with the connecting annular plate (33).
  6. 6. The liquid fuel combustion device with high heat utilization rate and noise reduction according to claim 1 or 5 is characterized in that a transverse bottom plate (42) is arranged at the bottom of a combustion cylinder body B (4), the bottom plate (42) of the combustion cylinder body B (4) is in sealing connection with the top end of a combustion cylinder body A (23), an annular flame channel is formed at the connection position of the bottom of the combustion cylinder body B (4) and the top end of the combustion cylinder body A (23), the flame channel is a communication channel between a primary combustion chamber (230) and a secondary combustion chamber (41), the cylinder wall of the heat exchange cylinder body (3) is further penetrated with a wind leakage hole and a wind supplementing hole (32), a temperature sensing needle (10) is arranged in the inner cylinder body (21), the top end of the Wen Ganzhen (10) is a temperature sensing detection part, and the temperature sensing needle (10) of the Wen Ganzhen (10) penetrates through the top cylinder wall of the heat exchange cylinder body (3) and is arranged in the secondary combustion chamber (41).
  7. 7. The liquid fuel combustion device with high heat utilization rate and noise reduction according to claim 1, wherein the cylinder wall of the combustion cylinder A (23) is provided with an oil inlet hole (9), an oil inlet pipe orifice of the oil inlet pipe (8) is correspondingly arranged at the position of the oil inlet hole (9), an ignition end of the ignition plug (7) is arranged at the position of the oil inlet hole (9) and corresponds to the oil inlet pipe orifice, and the ignition plug (7) is connected with an ignition wire (71).
  8. 8. The liquid fuel combustion device with high heat utilization rate and noise reduction according to claim 7 is characterized in that a vaporization felt is arranged at the position of an oil inlet hole (9), the oil inlet pipe (8) is connected with a high-pressure oil pump, vaporization nets (30) are distributed on the circumference of the inner wall of the outer cylinder body (22), the oil inlet pipe (8), the high-pressure oil pump and an ignition plug (7) form a set of oil transportation ignition units, a plurality of oil inlet holes (9) are distributed on the circumference of the combustion cylinder body A (23), and each oil inlet hole (9) is correspondingly provided with a set of oil transportation ignition units.
  9. 9. The liquid fuel combustion device with high heat utilization rate and noise reduction according to claim 1, wherein the wind collecting device (25) is a wind collecting wheel set, the wind collecting wheel set is composed of a plurality of guide impellers converging towards the center, the center of the wind collecting impeller corresponds to a center air inlet (211), and an asbestos pad is arranged between the sealing plate (6) and the connecting lug plate A (12) or/and the connecting lug plate B in a sealing mode.
  10. 10. The liquid fuel combustion device with high heat utilization rate and noise reduction as claimed in claim 1, wherein the top of the combustion cylinder B (4) is detachably covered with a fire dividing fin (5), and a plurality of fire dividing holes are formed in the fire dividing fin (5).

Description

Liquid fuel combustion device with high heat utilization rate and noise reduction Technical Field The invention relates to the field of combustion devices, in particular to a liquid fuel combustion device with high heat utilization rate and noise reduction. Background The combustion device commonly used at present is a gas stove which can only be used for combustion work of gas fuel such as natural gas, chinese patent CN101126514A discloses a combustion device for liquid fuel stove such as alcohol group, which is suitable for liquid fuel such as alcohol group, after the liquid fuel enters a spray head, the liquid fuel is heated by heat transmitted by flame outside the spray head, the fuel is sprayed into a fire bowl in vapor phase from a steam nozzle of the spray head for combustion, and Chinese patent CN106642227A discloses a stove core device for alcohol or mixed alcohol liquid fuel stove, which is also suitable for a structure of liquid fuel combustion. The prior liquid fuel is atomized or vaporized and then is directly mixed with normal-temperature air containing combustion improver (namely oxygen) in a combustor and combusted, the combustion fluctuation is larger and even the risk of flameout is easy to occur in the low-temperature environment of the normal-temperature air, the ignition is difficult (such as re-ignition combustion after flameout), because the liquid fuel is in an atomized state or a vapor state, the liquid fuel can be condensed into fuel water drops when encountering the normal-temperature air, the supplied fuel can not fully participate in combustion, the mixing efficiency of atomized or vaporized fuel and air is influenced, the flame is prevented from moving towards the direction of a pot body to be heated (the flame propagation speed is slow, the flame propagation is influenced), meanwhile, the flame in the combustion chamber is seriously unbalanced or disturbed (with larger noise) along with the input of the normal-temperature air in the combustion process of the fuel, the utilization rate of combustion heat in the combustion chamber is influenced, the combustion stability is also influenced, the combustion stability is poor, and the liquid fuel is further promoted to be fully mixed by the temperature of the combustion mainly depending on the combustion in the combustion process of the fuel, and the efficiency of the liquid fuel is seriously restricted along with the entry of the normal-temperature air. In the aspect of combustion regulation, due to insufficient combustion and low combustion efficiency, the problems of serious lag, low sensitivity, untimely regulation and the like can occur when the combustion flame or heat is regulated up or down. Disclosure of Invention The invention aims to provide a liquid fuel combustion device with high heat utilization rate and noise reduction, which is characterized in that normal-temperature air is introduced into a heat exchange cylinder body through an inner cylinder body to be subjected to heat exchange or heating treatment to form high-temperature hot air, then the high-temperature hot air and the normal-temperature air are conveyed to a primary combustion chamber in the opposite direction through a hot air annular cavity with structural design, the hot air and the normal-temperature air are subjected to cross heat exchange treatment, the entered normal-temperature air is preheated, so that the high-temperature hot air enters the primary combustion chamber, liquid fuel is input through an oil inlet hole to be atomized or vapor or fine water mist (the fine water mist is quickly vaporized into the vapor state in the combustion process), and the high-temperature hot air and the vapor state fuel are fully mixed in the primary combustion chamber, so that the high-temperature hot air accelerates molecular movement, the mixing efficiency and the mixing quality are greatly improved, meanwhile, the liquid and mist fuel can be accelerated into the vapor state, and the vaporization efficiency of the liquid fuel in the primary combustion chamber is higher. The aim of the invention is achieved by the following technical scheme: The liquid fuel combustion device with the high heat utilization rate and the noise reduction comprises a mixed combustion integrated assembly and a combustion cylinder body B which is connected to the top of the mixed combustion integrated assembly in a sealing mode, wherein the mixed combustion integrated assembly sequentially comprises an inner cylinder body, an outer cylinder body and a combustion cylinder body A from inside to outside, a central air inlet is formed in the bottom of an inner cylinder cavity of the inner cylinder body, a hot air annular cavity is formed between the outer wall of the inner cylinder body and the inner wall of the outer cylinder body, a secondary combustion chamber is formed in the combustion cylinder body B, the outer part of the upper part of the outer cylinder body is sealed and wrapped a