Closed step-by-step combustion chamber structure

Abstract

The utility model discloses a closed step-by-step combustion chamber structure which comprises an air inlet shell, a flow guide air chamber and a combustion cylinder A. The flow guide air chamber is arranged in the middle of the air inlet shell in an embedded mode, a lining cylinder is arranged in the middle of the air inlet shell, and a mixing chamber is formed between the lining cylinder and the flow guide air chamber. An air inlet cavity is formed in the air inlet shell, the top of the flow guide air chamber is closed, the bottom of the flow guide air chamber is open, an air collecting cavity communicating with the air inlet cavity is formed in the flow guide air chamber, and a plurality of air combing grooves are formed in the flow guide air chamber in a circumferential distribution mode. The combustion cylinder A is arranged at the top of the lining cylinder in a sealed mode, a combustion chamber A communicating with the mixing chamber is formed in the combustion cylinder A, and a plurality of flame heat outlets A are formed in the combustion cylinder A in a circumferential distribution mode. Fuel is fully combusted in the four-stage combustion chamber or the four-stage combustion chamber or the four-stage combustion chamber or the four-stage combustion chamber or the four-stage combustion chamber or the four-stage combustion chamber or the four-stage combustion chamber or the four-stage combustion chamber or the four-stage combustion chamber. And a high-temperature environment is formed in the mixing chamber, and sufficient combustion is sequentially carried out step by step under the guidance of the air flow of the fan.

Description

Technical Field

[0001] This utility model relates to the field of combustion chambers in combustion devices, and more particularly to a closed-type staged combustion chamber structure. Background Technology

[0002] Fuel combustion devices are processes that convert chemical energy into thermal energy. This thermal energy is used to heat water to cook food, or to turn water into high-temperature steam for steaming, or as a power source for mechanical transmission. For complete combustion, fuel and air (oxygen in the air) need to be thoroughly mixed. However, existing combustion devices often fail to effectively mix fuel and air, typically igniting directly at the fuel outlet (e.g., in a typical gas stove, combustion occurs at the gas outlet). This results in some fuel not being fully mixed with air before combustion, leading to incomplete combustion and the unavoidable production of toxic gases like carbon monoxide, resulting in significant carbon monoxide emissions. This also leads to low fuel utilization. Utility Model Content

[0003] The purpose of this invention is to solve the technical problems pointed out in the background art and to provide a closed-loop, staged combustion chamber structure. The mixing chamber serves as the first-stage combustion chamber, combustion chamber A of combustion cylinder A serves as the second-stage combustion chamber, combustion chamber B of combustion cylinder B serves as the third-stage combustion zone, and combustion chamber C of combustion cylinder C serves as the fourth-stage combustion zone. The fuel is fully combusted in the four-stage combustion chambers or zones to produce a roaring fire, which improves fuel combustion efficiency and reduces the probability of incomplete combustion of carbon monoxide. The mixing chamber creates a high-temperature environment, which also promotes the rapid vaporization of the incoming liquid fuel, which is then fully combusted stage by stage under the guidance of the fan airflow.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A closed-loop, staged combustion chamber structure includes an air inlet shell, a guide air chamber, and a combustion cylinder A. The guide air chamber is embedded in the middle of the air inlet shell, and the middle of the air inlet shell has an inner liner that cooperates with the guide air chamber. The bottom of the inner liner is connected to the bottom of the guide air chamber through a sealing base plate A, and a mixing chamber is formed between the inner liner and the guide air chamber. The air inlet shell has an air inlet chamber inside. The guide air chamber is closed at the top and open at the bottom. The guide air chamber has an air collecting chamber that communicates with the air inlet chamber. The guide air chamber has several circumferentially distributed combing grooves that communicate with the mixing chamber. The combustion cylinder A is sealed on the top of the inner liner. The combustion cylinder A has a combustion chamber A that communicates with the mixing chamber. The combustion cylinder A has several circumferentially distributed flame heat outlets A.

[0006] In order to better realize the utility model, the utility model also includes the combustion cylinder B located in the combustion cylinder A outside, the combustion cylinder B bottom end is connected with the lining cylinder top or / and the combustion cylinder A bottom, the combustion cylinder B inside has the combustion chamber B, the combustion cylinder B is opened with several flame heat outlets B in the circumferential distribution.

[0007] Preferably, the utility model also includes the combustion cylinder C located in the combustion cylinder B outside, the combustion cylinder C bottom is sealedly connected on the air inlet shell, the combustion cylinder C inside has the combustion chamber C, is opened with the smoke exhaust port of the combustion chamber C intercommunication on the combustion cylinder C.

[0008] Preferably, the smoke exhaust pipe is sealedly connected on the smoke exhaust port.

[0009] Preferably, the air inlet shell bottom is opened with the air inlet A, and the bottom opening of the flow guide air chamber is the air inlet B;The lining cylinder is opened with the fuel inlet of intercommunication with the mixing chamber, and the fuel inlet is sealedly installed with the fuel delivery pipe, and the fuel delivery pipe is installed with the delivery pump.

[0010] Preferably, in all combing wind grooves, all combing wind grooves are wind grooves, and the wind grooves are set to be inclined to blow out in a clockwise direction from the inner wall to the outer wall of the cylinder body of the flow guide air chamber;Or all combing wind grooves are counter wind grooves, and the counter wind grooves are set to be inclined to blow out in a counterclockwise direction from the inner wall to the outer wall of the cylinder body of the flow guide air chamber;Or part of the combing wind grooves in all combing wind grooves are wind grooves, and the remaining combing wind grooves are counter wind grooves.

[0011] Preferably, in all combing wind grooves, half of the combing wind grooves are wind grooves, and the other half of the combing wind grooves are counter wind grooves, all wind grooves form a wind groove unit and are arranged on one half of the cylinder wall of the flow guide air chamber, and all counter wind grooves form a counter wind groove unit and are arranged on the other half of the cylinder wall of the flow guide air chamber.

[0012] Preferably, the combustion cylinder A is composed of the cylinder body A with a sealing top plate and the sealing bottom plate B connected to the bottom end of the cylinder body A, the bottom end of the cylinder body A has a cylinder port in communication with the mixing chamber, the flame heat outlets A are evenly arranged on the cylinder body A of the combustion cylinder A, the sealing bottom plate B is connected to the outside of the bottom end of the cylinder body A of the combustion cylinder A, and the edge of the sealing bottom plate B is sealingly connected to the top of the lining cylinder.

[0013] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0014] (1) the mixed chamber is used as the first stage combustion chamber, the combustion chamber A of the combustion cylinder A is used as the second stage combustion chamber, the combustion chamber B of the combustion cylinder B is used as the third stage combustion area, the combustion chamber C of the combustion cylinder C is used as the fourth stage combustion area, the fuel is fully combusted in the four stage combustion chambers or areas to generate a large fire, the fuel combustion efficiency is improved, and the probability of incomplete combustion of carbon monoxide is reduced; the mixed chamber forms a high-temperature environment, and also promotes the rapid vaporization of the entering liquid fuel, and the liquid fuel is fully combusted in turn under the guidance of the air flow of the fan.

[0015] (2) the cylinder wall of the flow guide air chamber is provided with a plurality of combing grooves in communication with the mixed chamber in a circumferential distribution, three combing groove arrangement schemes are provided, the wind in the flow guide air chamber is combed and guided to the required air flow, and the fuel is fully mixed with the air flow for full combustion, and the combustion efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is an external structure schematic view of the utility model;

[0017] Figure 2 It is Figure 1 a sectional view;

[0018] Figure 3 It is Figure 1 an external structure schematic view after removing the combustion cylinders B and C;

[0019] Figure 4 It is Figure 2 an internal structure schematic view after removing the combustion cylinder C;

[0020] Figure 5 It is an internal structure schematic view of the air inlet shell with a lining cylinder;

[0021] Figure 6 It is a combination schematic view of the flow guide air chamber and the combustion cylinder A in the embodiment;

[0022] Figure 7 It is a structure schematic view of the flow guide air chamber;

[0023] Figure 8 It is a schematic view of arranging the adverse wind grooves and the favorable wind grooves on the left and right sides of the fuel inlet in the embodiment;

[0024] Figure 9 It is an example arrangement and shape schematic view of the flame heat outlet B of the combustion cylinder B in the embodiment;

[0025] Figure 10 It is another example arrangement and shape schematic view of the flame heat outlet B of the combustion cylinder B in the embodiment.

[0026] In the drawings, the names corresponding to the reference signs in the drawings are:

[0027] 1-Air inlet shell, 11-Air inlet A, 2-Inner liner, 3-Guide air chamber, 31-Air inlet B, 32-Combing duct, 4-Sealing base plate A, 5-Fuel inlet, 51-Fuel direction, 6-Combustion cylinder A, 61-Sealing base plate B, 62-Flame heat outlet A, 7-Combustion cylinder B, 71-Flame heat outlet B, 8-Combustion cylinder C, 81-Exhaust port, 9-Air inlet chamber, 10-Air collecting chamber, 12-Mixing chamber, 13-Combustion chamber A, 14-Combustion chamber B, 15-Combustion chamber C. Detailed Implementation

[0028] The present invention will be further described in detail below with reference to the embodiments:

[0029] Example

[0030] like Figures 1-7 As shown, a closed-loop staged combustion chamber structure (this invention is mainly used for combustion chamber structures using liquid and gaseous fuels as fuels. After fully mixing fuel and air, the combustion chamber structure of this invention achieves staged and progressive combustion in the mixing chamber 12, the combustion chamber A13 of the combustion cylinder A6, the combustion chamber B14 of the combustion cylinder B7, and the combustion chamber C15 of the combustion cylinder C8, continuously generating a roaring flame that heats surrounding objects. At the same time, the roaring flame also improves the degree of fuel combustion and greatly reduces the probability of incomplete combustion of carbon monoxide) includes an air inlet shell 1, a guide air chamber 3, and a combustion cylinder A6. The air inlet shell 1 of this invention can be connected to a fan, which provides a large airflow to allow more air to mix with the fuel. The air guide chamber 3 is embedded in the middle of the air inlet housing 1. The middle of the air inlet housing 1 has an inner liner 2 that cooperates with the air guide chamber 3. The bottom of the inner liner 2 is connected to the bottom of the air guide chamber 3 through a sealing base plate A4. A mixing chamber 12 is formed between the inner liner 2 and the air guide chamber 3 (fuel and air flow are mixed in the mixing chamber 12).

[0031] The air inlet housing 1 has an air inlet chamber 9 inside. The air guide chamber 3 is closed at the top and open at the bottom. The air guide chamber 3 has an air collecting chamber 10 that communicates with the air inlet chamber 9. The air guide chamber 3 has several air combing slots 32 distributed in a circular pattern that communicate with the mixing chamber 12. The combustion cylinder A6 is sealed at the top of the inner liner cylinder 2. The combustion cylinder A6 has a combustion chamber A13 that communicates with the mixing chamber 12 inside. The combustion cylinder A6 has several flame heat outlets A62 distributed in a circular pattern.

[0032] In some embodiments, the present invention further includes a combustion cylinder B7 encompassing the outside of the combustion cylinder A6, the bottom end of the combustion cylinder B7 being connected to the top of the inner liner 2 and / or the bottom of the combustion cylinder A6, and the combustion cylinder B7 having a combustion chamber B14 inside. The combustion cylinder B7 has a plurality of flame heat outlets B71 distributed circumferentially; as...Figure 9 As shown, the flame heat outlets B71 are arranged at the top and / or side of the combustion cylinder B7, and the flame heat outlets B71 are circular in shape. Figure 10 As shown, the flame heat outlets B71 are arranged at the top and / or side of the combustion cylinder B7, and part of the flame heat outlets B71 are circular in shape, and the other part of the flame heat outlets B71 are rectangular in shape; preferably, the flame heat outlets B71 at the top of the combustion cylinder B7 are circular in shape, and the flame heat outlets B71 at the side of the combustion cylinder B7 are rectangular in shape as a whole. The flame or heat generated by the combustion inside the combustion cylinder B7 is also transmitted to the mixing chamber 12 and accelerates the vaporization of the liquid fuel.

[0033] In some embodiments, the utility model also includes a combustion cylinder C8 arranged outside the combustion cylinder B7, the bottom of the combustion cylinder C8 is sealingly connected to the air inlet shell 1, and the combustion cylinder C8 has a combustion cavity C15 inside, and the combustion cylinder C8 is provided with a smoke outlet 81 communicating with the combustion cavity C15. Preferably, the smoke outlet 81 is sealingly connected with a smoke pipe.

[0034] In some embodiments, the air inlet shell 1 is provided with an air inlet A11 at the bottom, and the bottom opening of the guide air chamber 3 is an air inlet B31. The inner lining cylinder 2 is provided with a fuel inlet 5 communicating with the mixing chamber 12, the fuel inlet 5 is sealingly provided with a fuel delivery pipe, and the fuel delivery pipe is provided with a delivery pump.

[0035] In some embodiments, in all the combing grooves 32, there are three arrangement schemes as follows: the first scheme: all the combing grooves 32 are downwind grooves, and the downwind grooves are arranged to blow out in a clockwise direction from the inner wall to the outer wall of the cylinder of the guide air chamber 3. Since all the combing grooves 32 of the guide air chamber 3 are downwind grooves, the air is blown into the inner cavity of the guide air chamber 3 by the fan, and after passing through all the combing grooves 32 (the combing grooves 32 serve to comb and guide the airflow, and the airflow after the combing and guiding enters the mixing chamber 12), the clockwise airflow is formed, the clockwise airflow is fully mixed with the fuel entering the mixing chamber 12 through the fuel inlet 5 in succession, and then is uniformly distributed in the entire mixing chamber 12. During the combustion process of the utility model, at this time, the guide air chamber 3 and the inner lining cylinder 2 are high temperature, and the mixing chamber 12 is also a high temperature environment, if liquid fuel is used, the liquid fuel is sprayed into the mixing chamber 12 by the pulse oil pump (the spray can be in the form of water mist), and the liquid fuel is vaporized into a gas body in the high temperature mixing chamber 12.

[0036] The second option is that all the air combing slots 32 are counter-current slots, which are arranged counter-clockwise from the inner wall to the outer wall of the guide air chamber 3. Since all the air combing slots 32 of the guide air chamber 3 are counter-current slots, the fan blows air into the inner cavity of the guide air chamber 3. After passing through all the air combing slots 32 (which guide the airflow, and the airflow after being guided enters the mixing chamber 12), a counter-clockwise airflow is formed. The counter-clockwise airflow is fully mixed with the fuel that enters successively from the fuel inlet 5, and then evenly distributed throughout the mixing chamber 12.

[0037] The third option: A portion of all the air combing slots 32 are along-wind slots, and the remaining portion are against-wind slots. Of all the air combing slots 32, half are along-wind slots, and the other half are against-wind slots. All along-wind slots form a along-wind slot unit and are arranged on one half of the cylindrical wall of the guide air chamber 3, and all against-wind slots form a against-wind slot unit and are arranged on the other half of the cylindrical wall of the guide air chamber 3. In the actual setup of this embodiment, fuel inlet 5 enters fuel in the fuel direction 51 (…). Figure 8 As indicated by the arrow, the fuel entering from the fuel direction 51 is vaporized into gas in a high-temperature environment (if it is a gaseous fuel, vaporization is not required). The fuel inlet 5 is located at the junction of the downwind trough unit and the upwind trough unit. Part of the fuel entering from the fuel direction 51 moves clockwise under the guidance of the downwind flow of the downwind trough unit and is fully mixed at the same time. The other part moves counterclockwise under the guidance of the upwind flow of the upwind trough unit and is fully mixed at the same time.

[0038] In some embodiments, the combustion cylinder A6 is composed of a cylinder A with a sealing top plate and a sealing bottom plate B61 connected to the bottom end of the cylinder A. The bottom end of the cylinder A has a cylinder opening communicating with the mixing chamber 12. The flame heat outlet A62 is uniformly disposed on the cylinder A of the combustion cylinder A6. The sealing bottom plate B61 is connected to the outside of the bottom end of the cylinder A of the combustion cylinder A6, and the edge of the sealing bottom plate B61 is sealed to the top of the inner liner cylinder 2.

[0039] In use, taking liquid fuel as an example, the air inlet housing 1 can be connected to a blower. The blower enters the air inlet chamber 9 through the air inlet A11. After being combed and guided by all the air combing grooves 32, the required airflow is formed (any of the three types of airflow, but the third type of airflow design of the air combing grooves 32 is preferred in this embodiment). The liquid fuel entering through the fuel inlet 5 is fully mixed and burned with the airflow in the high-temperature mixing chamber 12. The mixing chamber 12 of this invention can be regarded as the first-stage combustion chamber, and the combustion chamber A13 of the combustion cylinder A6 can be regarded as the second-stage combustion chamber. Combustion chambers B14 of combustion cylinder B7 can be considered as the third-stage combustion zone, and combustion chamber C15 of combustion cylinder C8 can be considered as the fourth-stage combustion zone. Fuel is fully combusted in the fourth-stage combustion chamber or zone to produce a roaring fire, which improves fuel combustion efficiency, reduces the probability of incomplete combustion of carbon monoxide, and also fully heats the surrounding appliances. The combustion of fuel in the first-stage combustion chamber also promotes the rapid vaporization of the incoming liquid fuel. The mixing chamber 12 forms a high-temperature environment, and under the guidance of the fan airflow, the fuel is fully combusted step by step.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A closed staged combustion chamber structure, characterized by: The application relates to a combustion device, which comprises an air inlet shell, a guide air chamber and a combustion cylinder A, the guide air chamber is embedded in the middle part of the air inlet shell, the middle part of the air inlet shell is provided with an inner lining cylinder matched with the guide air chamber, the bottom of the inner lining cylinder is connected with the bottom of the guide air chamber through a sealing bottom plate A, a mixing cavity is formed between the inner lining cylinder and the guide air chamber; the air inlet shell is internally provided with an air inlet chamber, the top of the guide air chamber is closed and the bottom is open, the guide air chamber is internally provided with a wind collecting chamber communicated with the air inlet chamber, and the guide air chamber is provided with a plurality of combing air grooves communicated with the mixing cavity and distributed in a circumferential mode; the combustion cylinder A is sealingly arranged at the top of the inner lining cylinder, the combustion cylinder A is internally provided with a combustion chamber A communicated with the mixing cavity, and the combustion cylinder A is provided with a plurality of flame heat outlets A and distributed in a circumferential mode.

2. A closed staged combustion chamber structure according to claim 1, characterized in that: The combustion device further comprises a combustion cylinder B arranged outside the combustion cylinder A, the bottom end of the combustion cylinder B is connected with the top of the inner lining cylinder or / and the bottom of the combustion cylinder A, and the combustion cylinder B is internally provided with a combustion chamber B; the combustion cylinder B is provided with a plurality of flame heat outlets B and distributed in a circumferential mode.

3. A closed staged combustion chamber structure according to claim 2, characterized in that: The combustion device further comprises a combustion cylinder C arranged outside the combustion cylinder B, the bottom of the combustion cylinder C is sealingly connected to the air inlet shell, the combustion cylinder C is internally provided with a combustion chamber C, and the combustion cylinder C is provided with a smoke discharging port communicated with the combustion chamber C.

4. A closed staged combustion chamber structure according to claim 3, characterized in that: The smoke discharging port is sealingly connected with a smoke discharging pipe.

5. A closed staged combustion chamber structure according to claim 1, characterized in that: The bottom of the air inlet shell is provided with an air inlet A, and the bottom opening of the guide air chamber is an air inlet B; the inner lining cylinder is provided with a fuel inlet communicated with the mixing cavity, the fuel inlet is sealingly provided with a fuel conveying pipe, and the fuel conveying pipe is provided with a conveying pump.

6. A closed staged combustion chamber structure according to claim 1, characterized in that: In all the combing air grooves, all the combing air grooves are downwind grooves, the downwind grooves are arranged to be inclined to blow air in a clockwise direction from the inner wall to the outer wall of the cylinder body of the guide air chamber; or all the combing air grooves are upwind grooves, the upwind grooves are arranged to be inclined to blow air in an anticlockwise direction from the inner wall to the outer wall of the cylinder body of the guide air chamber; or part of the combing air grooves are downwind grooves and the remaining part of the combing air grooves are upwind grooves.

7. A closed staged combustion chamber structure according to claim 6, characterized in that: In all the combing air grooves, half of the combing air grooves are downwind grooves and the other half of the combing air grooves are upwind grooves, all the downwind grooves form a downwind groove unit and are arranged on one half of the cylinder wall of the guide air chamber, and all the upwind grooves form an upwind groove unit and are arranged on the other half of the cylinder wall of the guide air chamber.

8. A closed staged combustion chamber structure according to claim 1, characterized in that: The combustion cylinder A is composed of a cylinder body A provided with a sealing top plate and a sealing bottom plate B connected to the bottom end of the cylinder body A, the bottom end of the cylinder body A is provided with a cylinder port communicated with the mixing cavity, the flame heat outlets A are uniformly arranged on the cylinder body A of the combustion cylinder A, the sealing bottom plate B is connected to the outside of the bottom end of the cylinder body A of the combustion cylinder A, and the edge of the sealing bottom plate B is sealingly connected with the top of the inner lining cylinder.

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