Safe and energy-saving smoke removal machine

Abstract

The safe and energy-saving smoke removal machine comprises a shell, a combustion chamber is arranged on the inner side of the shell, a preheating layer is arranged on the outer side of the combustion chamber, the preheating layer is communicated with the bottom of the combustion chamber, and an interlayer is formed between the preheating layer and the shell; a fan is arranged at the top of the shell, the air inlet end of the fan is communicated with the top of the interlayer and the top of the combustion chamber, and the air outlet end of the fan is provided with an air outlet; an air inlet is formed in the side wall of the shell, and the air inlet is communicated and connected with the preheating layer; the preheating layer is arranged, the top of the preheating layer is connected with the air inlet, the bottom of the preheating layer is communicated with the combustion chamber, smoke coming from coffee baking equipment enters the preheating layer and then is in a rotating state, heat energy lost by the combustion chamber is recycled, better heat insulation is provided for the combustion chamber, meanwhile, the smoke is preheated, and the heating efficiency is improved. Therefore, the purposes of saving energy, protecting the environment and improving the smoke removal effect are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of smoke treatment, and specifically relates to a safe and energy-saving smoke extractor. Background Art

[0002] During the coffee roasting process, a large amount of smoke is inevitably generated. If this smoke is not treated, it will cause air pollution and affect the surrounding environment. Currently, the commonly used high-temperature oxidation smoke removal equipment usually has problems such as insufficient mixing of air flow and flame, which affects the stable combustion of the flame, uneven smoke removal, excessive energy consumption, too high surface temperature of the equipment, too high exhaust temperature, and potential fire hazards.

[0003] At the same time, the smoke extractor and the roasting machine often work independently. The roasting machine only generates smoke after the material exceeds the smoke point. If the smoke extractor is always turned on, it will waste energy. If it is not turned on in time, it will not be able to completely remove the smoke, causing environmental pollution. Summary of the Invention

[0004] The purpose of the present invention is to provide a safe and energy-saving smoke extractor, aiming to improve the problems to be improved in the smoke treatment equipment for coffee roasting machines.

[0005] The present invention is realized as follows: A safe and energy-saving smoke extractor includes a housing. Inside the housing, a combustion chamber is provided. Outside the combustion chamber, a preheating layer is provided. The bottom of the preheating layer is connected to the bottom of the combustion chamber in a communicating manner. A sandwich layer is formed between the preheating layer and the housing. At the top of the housing, a blower is provided. The intake end of the blower is in communication with the top of the sandwich layer and the combustion chamber. The outlet end of the blower is set as an air outlet. An air inlet is provided on the side wall of the housing. The air inlet is connected to the preheating layer in a communicating manner.

[0006] Preferably, the heights of both the combustion chamber and the preheating layer are less than the height of the inner space of the housing, and the bottoms of the combustion chamber and the preheating layer are at the same height and do not contact the bottom surface of the housing.

[0007] Preferably, a diversion air inlet groove is provided at the bottom of the side wall of the combustion chamber. The diversion air inlet groove communicates the combustion chamber and the preheating layer.

[0008] Preferably, a flame jet burner is provided at the bottom of the housing. The flame jet burner is directed at the opening at the bottom of the combustion chamber.

[0009] Preferably, a heat insulation layer is provided on the outer side wall of the preheating layer. An observation port is provided through the heat insulation layer and the side wall of the housing. The end of the observation port extends to the combustion chamber.

[0010] Preferably, after the gas enters the preheating layer from the air inlet, a rotating air curtain is formed, and then the gas enters the combustion chamber from the diversion air inlet groove.

[0011] Preferably, a control box is provided below the outer shell, and a control valve and a control system are provided inside the control box; a temperature sensor is provided at the top of the interlayer, and the temperature sensor is connected to the control system.

[0012] Preferably, a heat dissipation air flow inlet is provided at the junction of the control box and the outer shell, and the heat dissipation air flow inlet is communicated with the bottom of the interlayer.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. The present invention is provided with a preheating layer, and the top of the preheating layer is connected to the air inlet, and the bottom is connected to the combustion chamber in a communicating manner. After the flue gas coming from the coffee roasting equipment enters the preheating layer, it rotates, recovering the heat energy dissipated by the combustion chamber, providing better heat insulation for the combustion chamber, and at the same time preheating the flue gas, thus achieving the purpose of energy conservation and environmental protection and improving the smoke removal effect.

[0015] 2. In the present invention, the flue gas entering the combustion chamber also presents a rotating state, and in the oxidation combustion chamber, it can be better mixed with the flame and high-temperature air flow, enhancing the heat convection between the flue gas and the flame heat source, so that the flue gas is heated more uniformly, improving the smoke removal effect and reducing the energy consumption.

[0016] 3. The present invention is provided with an interlayer, and a heat dissipation air flow inlet is provided at the bottom of the interlayer. At the same time, the top of the interlayer is connected to the fan. Therefore, under the action of the fan, external gas can be pumped into the interlayer, using the cooling air flow to form an air curtain between the equipment outer shell and the heat insulation layer, preventing the high temperature of the equipment outer shell, and at the same time mixing the cooling air flow and the high-temperature air flow after combustion, thereby reducing the air outlet temperature of the equipment and avoiding the fire risk caused by too high air outlet temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the whole of the present invention;

[0018] Figure 2 is a first sectional view of the present invention;

[0019] Figure 3 is a second sectional view of the present invention;

[0020] Figure 4 is a third sectional view of the present invention.

[0021] In the figure: 1. Outer shell; 2. Air inlet; 3. Fan; 4. Air outlet; 5. Heat dissipation air flow inlet; 6. Control box; 7. Interlayer; 8. Heat insulation layer; 9. Preheating layer; 10. Combustion chamber; 11. Diversion air inlet groove; 12. Spraying burner; 13. Observation port; 14. Control system; 15. Air curtain; 16. Control valve; 17. Temperature sensor. DETAILED DESCRIPTION OF THE INVENTION

[0022] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] The following is a further description with reference to the accompanying drawings and specific embodiments:

[0024] Example 1

[0025] like Figures 1-4 As shown, in order to improve the defects of the existing smoke remover, this embodiment provides a new smoke remover, which includes a shell 1, and multiple areas are arranged in the shell 1, such as a combustion chamber 10, a preheating layer 9, etc. The combustion chamber 10 is located in the middle of the shell 1, and the upper and lower ends of the combustion chamber 10 are both set to be openings, and the preheating layer 9 is arranged on the outside of the combustion chamber 10, and the height of the preheating layer 9 is equal to the height of the combustion chamber 10. In addition, the upper and lower ends of the preheating layer 9 and the combustion chamber 10 are flush.

[0026] A guide air inlet groove 11 is provided at the bottom of the side wall of the combustion chamber 10, and the guide air inlet groove 11 connects the combustion chamber 10 and the preheating layer 9. An air inlet 2 is provided on the side wall of the shell 1, and the air inlet 2 is connected to the preheating layer 9. The air inlet 2 is connected to the coffee roasting equipment, so the gas exhausted by the coffee roasting equipment passes through the air inlet 2 and enters the preheating layer 9 along the tangential direction, generating rotation, and the flue gas entering the preheating layer 9 forms a rotating air curtain 15 on the outer layer of the combustion chamber, and the air curtain 15 recovers the heat energy dissipated by the combustion chamber, provides better heat insulation for the combustion chamber, and also preheats the flue gas, thereby achieving the purpose of energy saving and environmental protection and improving the smoke removal effect.

[0027] When the flue gas rotates in the preheating layer 9, it absorbs the heat energy dissipated by the oxidation combustion chamber 10 for preheating, thereby recovering the system heat energy. The air intake design along the tangent direction and the oblique air intake slot design at the bottom of the oxidation combustion chamber make the airflow rotate so that it can be better mixed with the flame and high-temperature airflow in the oxidation combustion chamber, thereby improving the heat convection between the flue gas and the flame heat source, so that the flue gas is heated more evenly and uniformly, improving the smoke removal effect and reducing energy consumption.

[0028] A guide air inlet groove 11 is provided at the bottom of the side wall of the combustion chamber 10, and the guide air inlet groove 11 connects the combustion chamber 10 and the preheating layer 9. Therefore, the flue gas flowing to the bottom of the preheating layer 9 enters the oxidation combustion chamber 10 through the cyclone guide air inlet groove 11 and continues to rotate.

[0029] A flame burner 12 is provided at the bottom of the housing 1, and the top of the flame burner 12 is connected to the bottom of the combustion chamber 10. The smoke entering the combustion chamber 10 is fully mixed with the flame generated by the flame burner 12 to generate a tornado-like flame, thereby greatly enhancing the heat convection between the smoke and the flame. The temperature distribution of the airflow in the combustion chamber is therefore more uniform, thereby achieving a smoke removal effect in which the smoke is fully and evenly heated and oxidized. This also enables the equipment to uniformly heat the smoke to the smoke removal temperature with less gas consumption, thereby improving the smoke removal effect and further reducing energy consumption.

[0030] In order to reduce the ability of the preheating layer 9 to dissipate heat to the outside, an insulation layer 8 is provided on the outer wall of the preheating layer 9 to reduce the heat conduction ability of the preheating layer 9 and cooperate with the air curtain 15 to form an insulation structure, which can effectively reduce the temperature of the shell 1.

[0031] In order to observe the flame, an observation port 13 is provided through the heat insulation layer 8 and the side wall of the housing 1 , and an end of the observation port 13 extends to the combustion chamber 10 .

[0032] In order to exhaust the smoke in the combustion chamber 10, a fan 3 is arranged on the top of the outer shell 1, and the air inlet end of the fan 3 is connected to the top of the combustion chamber 10. Therefore, under the action of the fan 3, the smoke can be sucked and discharged from the outlet 4 at the outlet end of the fan 3.

[0033] In order to further reduce the temperature of the shell 1, the preheating layer 9 can be isolated from the shell 1, and then an interlayer 7 is formed between the preheating layer 9 and the shell 1, and the top of the interlayer 7 is connected to the fan 3, and the bottom of the interlayer 7 is provided with a heat dissipation airflow inlet 5. Therefore, the external gas can be pumped into the interlayer 7 from the heat dissipation airflow inlet 5 under the action of the fan 3, and then output from the air outlet 4 of the fan 3. In this process, the gas takes away the heat of the interlayer 7, further reducing the temperature of the shell 1. That is, a cooling airflow is used to form an air curtain between the equipment shell and the insulation layer to prevent the high temperature of the equipment shell, and the cooling airflow is mixed with the high-temperature airflow after combustion, thereby reducing the equipment outlet temperature and avoiding the risk of fire caused by excessively high outlet temperature.

[0034] The heat dissipation and cooling air flow rises to the outlet of the oxidation combustion chamber and mixes with the high-temperature flue gas after oxidation combustion, cooling the high-temperature flue gas to a safer temperature, and then being sucked in by the mixed-flow cooling fan and discharged from the fan outlet. The temperature of the high-temperature flue gas after oxidation combustion is usually around 200°C - 600°C, and the temperature of some systems will reach above 800°C. Through the above design, we can reduce the temperature of the air flow discharged from the system to a relatively safe temperature, greatly reducing the fire hazard and also greatly reducing the cost for arranging the subsequent exhaust duct.

[0035] Embodiment 2

[0036] As Figures 1-3 shown, on the basis of Embodiment 1, a control box 6 is provided below the outer shell 1, and a combustion control valve 16 and a combustion control system 14 are provided inside the control box 6. A temperature sensor 17 is provided at the top of the interlayer 7, and the temperature sensor 17 is connected to the control system 14. Through the real-time feedback of the temperature sensor 17, the working temperature of the system is maintained near the target temperature, achieving a balance between the smoke removal effect and the gas consumption, avoiding gas waste and poor smoke removal effect.

[0037] Specifically, during the operation of the system, the flame burner sprays flames to provide heat energy for the system. The combustion control system detects the working temperature of the smoke removal system through the temperature sensor, adjusts the gas consumption through the gas control valve, and the combustion control system controls the working temperature of the system near the target temperature through an automatic control algorithm. This not only avoids waste of energy due to too high working temperature of the system, but also avoids the situation that the working temperature of the system is too low to achieve the smoke removal effect.

[0038] A large amount of smoke is only generated during the coffee roasting process after the temperature exceeds the smoke point, and no smoke is generated in the previous stage. Therefore, in terms of intelligence, this patent sets a communication data interface with the roasting machine in the control system and sets an algorithm for automatic control and communication in the control system, enabling real-time communication between the smoke extractor and the coffee roasting machine, and sending the roasting state of the roasting machine to the smoke extractor. Thus, when the roasting machine is in the roasting state and the material exceeds the smoke point, the smoke removal heating is turned on, which greatly reduces the gas consumption of the smoke extractor and realizes the automation and intelligence of the system operation.

[0039] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A safe and energy-saving smoke remover, characterized in that: The invention comprises an outer shell (1), a combustion chamber (10) is arranged on the inner side of the outer shell (1), a preheating layer (9) is arranged on the outer side of the combustion chamber (10), the preheating layer (9) and the bottom of the combustion chamber (10) are in communication with each other, and an interlayer (7) is formed between the preheating layer (9) and the outer shell (1); a fan (3) is arranged on the top of the outer shell (1), the air inlet end of the fan (3) is in communication with the interlayer (7) and the top of the combustion chamber (10), and the air outlet end of the fan (3) is arranged as an air outlet (4); an air inlet (2) is arranged on the side wall of the outer shell (1), and the air inlet (2) is in communication with the preheating layer (9).

2. A safe and energy-saving smoke remover according to claim 1, characterized in that: The heights of the combustion chamber (10) and the preheating layer (9) are both smaller than the height of the space inside the outer shell (1), and the bottoms of the combustion chamber (10) and the preheating layer (9) are flush with each other and do not contact the bottom surface of the outer shell (1).

3. A safe and energy-saving smoke remover according to claim 2, characterized in that: A flow-guiding air inlet groove (11) is provided at the bottom of the side wall of the combustion chamber (10), and the flow-guiding air inlet groove (11) is connected to the combustion chamber (10) and the preheating layer (9).

4. A safe and energy-saving smoke remover according to claim 3, characterized in that: A flame-spraying burner (12) is arranged at the bottom of the housing (1), and the flame-spraying burner (12) faces the opening at the bottom of the combustion chamber (10).

5. A safe and energy-saving smoke remover according to claim 1, characterized in that: A heat insulating layer (8) is provided on the outer wall of the preheating layer (9), and an observation port (13) is provided through the heat insulating layer (8) and the side wall of the outer shell (1), with the end of the observation port (13) extending to the combustion chamber (10).

6. A safe and energy-saving smoke remover according to claim 3, characterized in that: The gas enters the preheating layer (9) along the tangential direction from the air inlet (2) to form a rotating air curtain (15), and then the gas enters the combustion chamber (10) from the guide air inlet groove (11).

7. A safe and energy-saving smoke remover according to claim 1, characterized in that: A control box (6) is arranged below the outer shell (1), and a control valve (16) and a control system (14) are arranged inside the control box (6); a temperature sensor (17) is arranged on the top of the interlayer (7), and the temperature sensor (17) is connected to the control system (14).

8. A safe and energy-saving smoke remover according to claim 7, characterized in that: A heat dissipation airflow inlet (5) is provided at the junction of the control box (6) and the outer shell (1), and the heat dissipation airflow inlet (5) is arranged in communication at the bottom of the interlayer (7).

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