Safe and energy-saving smoke removal machine

Abstract

The utility model discloses a safe and energy-saving smoke removal machine which 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 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 utility model relates to a smoke treatment technical field, concretely is a safe and energy -conserving fume exhaustor. BACKGROUND

[0002] A large amount of smoke will be produced in the coffee roasting process, and if these smoke is not treated, it will cause air pollution and affect the surrounding environment. The high-temperature oxidation smoke removal equipment currently used usually has the problems of insufficient mixing of airflow and flame, affecting the stable combustion of the flame, uneven smoke removal, excessive energy consumption, excessive surface temperature of the equipment, excessive exhaust temperature, fire hazards and many other problems.

[0003] At the same time, the fume exhaustor and the roaster often work independently, and the roaster only produces smoke when the material exceeds the smoke point. If the fume exhaustor is always on, it will waste energy, and if it is not turned on in time, it will not completely remove the smoke and cause environmental pollution. INVENTION CONTENTS

[0004] The utility model aims at providing a safe and energy -conserving fume exhaustor, and aims at improving the problems of the smoke treatment equipment for the coffee roaster.

[0005] The utility model is realized in this way: a safe and energy -conserving fume exhaustor, comprising 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 and the bottom of the combustion chamber are connected in communication, and a sandwich layer is formed between the preheating layer and the shell; a fan is arranged on the top of the shell, the air inlet end of the fan is communicated with the sandwich layer and the top of the combustion chamber, and the air outlet end of the fan is arranged as an air outlet; an air inlet is arranged on the side wall of the shell, and the air inlet is connected in communication with the preheating layer.

[0006] Preferably, the height of the combustion chamber and the preheating layer is less than the height of the space on the inner side of the shell, and the bottom of the combustion chamber and the preheating layer is flush and does not contact the bottom surface of the shell.

[0007] Preferably, a flow guide air inlet groove is arranged at the bottom of the side wall of the combustion chamber, and the flow guide air inlet groove is communicated with the combustion chamber and the preheating layer.

[0008] Preferably, a flame jet burner is arranged at the bottom of the shell, and the flame jet burner is opposite to the opening at the bottom of the combustion chamber.

[0009] Preferably, a heat insulation layer is arranged on the outer side wall of the preheating layer, an observation hole is arranged through the heat insulation layer and the side wall of the shell, and the end of the observation hole 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 flow guide air inlet groove.

[0011] Preferably, a control box is arranged below the shell, and a control valve and a control system are arranged in the inner side of the control box; a temperature sensor is arranged at the top of the interlayer, and the temperature sensor is connected with the control system.

[0012] Preferably, a heat dissipation airflow inlet is arranged at the joint of the control box and the shell, and the heat dissipation airflow inlet is in communication with the bottom of the interlayer.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1、The utility model discloses a preheating layer is arranged, and the top of preheating layer is connected with air inlet, and the bottom is connected with combustion chamber, and the flue gas from coffee roasting equipment enters preheating layer and is in the rotating state, recovers the heat energy of combustion chamber and provides better heat insulation for combustion chamber, and the flue gas is preheated, thereby achieving the purposes of energy saving and environmental protection and improving the smoke removal effect.

[0015] 2、The flue gas entering the combustion chamber is also in the rotating state, and is better mixed with the flame and high-temperature airflow in the oxidation combustion chamber, improves the heat convection between the flue gas and the flame heat source, thereby making the flue gas be heated more uniformly, improving the smoke removal effect and reducing the energy consumption.

[0016] 3、The utility model discloses an interlayer, and the bottom of the interlayer is provided with a heat dissipation airflow inlet, and the top of the interlayer is connected with a fan, so that the external air can be sucked into the interlayer under the action of the fan, a gas curtain is formed between the equipment shell and the heat insulation layer by using the cooling airflow, the high temperature of the equipment shell is prevented, the cooling airflow and the high-temperature airflow after combustion are mixed, thereby reducing the outlet air temperature of the equipment and avoiding the fire risk caused by the excessively high outlet air temperature. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall structure schematic diagram of the utility model;

[0018] Figure 2 It is the first cross section schematic diagram of the utility model;

[0019] Figure 3 It is the second cross section schematic diagram of the utility model;

[0020] Figure 4 It is the third cross section schematic diagram of the utility model.

[0021] In the drawing: 1, shell;2, air inlet;3, fan;4, air outlet;5, heat dissipation airflow inlet;6, control box;7, interlayer;8, heat insulation layer;9, preheating layer;10, combustion chamber;11, guide air inlet groove;12, flame jet burner;13, observation port;14, control system;15, gas curtain;16, control valve;17, temperature sensor. Detailed implementation method:

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details:

[0024] Example 1

[0025] like Figures 1-4 As shown, in order to improve the shortcomings of existing smoke extractors, this embodiment provides a new smoke extractor, which includes a housing 1. Multiple areas are provided within the housing 1, such as a combustion chamber 10 and a preheating layer 9. The combustion chamber 10 is located in the middle of the housing 1, and both its upper and lower ends are open. The preheating layer 9 is located outside the combustion chamber 10, and its height is equal to that of the combustion chamber 10. Furthermore, the upper and lower ends of the preheating layer 9 and the combustion chamber 10 are flush.

[0026] A flow-guiding air inlet groove 11 is provided at the bottom of the side wall of the combustion chamber 10, connecting the combustion chamber 10 and the preheating layer 9. An air inlet 2 is provided on the side wall of the outer 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. Therefore, the gas discharged from the coffee roasting equipment passes through the air inlet 2 and enters the preheating layer 9 tangentially, generating rotation. The flue gas entering the preheating layer 9 forms a rotating air curtain 15 on the outer layer of the combustion chamber. This air curtain 15 recovers the heat energy lost from the combustion chamber, provides better insulation for the combustion chamber, and preheats the flue gas, thereby achieving the purpose of energy saving, environmental protection, and improved smoke removal effect.

[0027] As the flue gas rotates in the preheating layer 9, it absorbs the heat energy lost from the oxidation combustion chamber 10 for preheating, thereby recovering the system's heat energy. The tangential air intake design and the obliquely cut air intake groove design at the bottom of the oxidation combustion chamber cause the airflow to rotate, thus better mixing with the flame and high-temperature airflow in the oxidation combustion chamber. This enhances the thermal convection between the flue gas and the flame heat source, resulting in more uniform heating of the flue gas, improving the smoke removal effect and reducing energy consumption.

[0028] The bottom of the side wall of the combustion chamber 10 is provided with a flow guide air inlet groove 11, which communicates 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 flow guide air inlet groove 11 and continues to rotate.

[0029] The bottom of the shell 1 is provided with a flame jet burner 12, the top of which is connected to the bottom of the combustion chamber 10. The flue gas entering the combustion chamber 10 is fully mixed with the flame generated by the flame jet burner 12 to produce a tornado-like flame, thereby greatly enhancing the heat convection between the flue gas and the flame. The temperature distribution of the airflow in the combustion chamber is therefore more uniform, thereby achieving the effect of fully and uniformly heating and oxidizing the flue gas. This also enables the device to heat the flue gas to the smoke removal temperature as a whole with less fuel 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 emit heat outwardly, a heat insulation layer 8 is provided on the outer side wall of the preheating layer 9 to reduce the heat conduction ability of the preheating layer 9 and form a heat insulation structure together with the air curtain 15, thereby effectively reducing the temperature of the shell 1.

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

[0032] In order to be able to exhaust the flue gas in the combustion chamber 10, a fan 3 is provided at the top of the shell 1, and the air inlet end of the fan 3 communicates with the top of the combustion chamber 10. Therefore, the flue gas can be pumped out of the air outlet 4 of the air outlet end of the fan 3 under the action 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 to form a sandwich layer 7 between the preheating layer 9 and the shell 1. The top of the sandwich layer 7 is connected to the fan 3, and the bottom of the sandwich layer 7 is provided with a heat dissipation air inlet 5. Therefore, under the action of the fan 3, external gas can be pumped into the sandwich layer 7 from the heat dissipation air inlet 5 and then output from the air outlet 4 of the fan 3. In this process, the gas takes away the heat of the sandwich layer 7, further reducing the temperature of the shell 1. That is, a cooling air curtain is formed between the shell of the device and the heat insulation layer to prevent the shell of the device from being too hot. At the same time, the cooling air and the high-temperature gas after combustion are mixed to reduce the outlet air temperature of the device and avoid the risk of fire caused by too high outlet air temperature.

[0034] The cooling airflow rises to the outlet of the oxidation combustion chamber and mixes with the high-temperature flue gas after oxidation and combustion, cooling the flue gas to a safer temperature. Then, it is drawn in by a mixed-flow cooling fan and discharged from the fan outlet. The temperature of the high-temperature flue gas after oxidation and combustion is typically around 200℃-600℃, and in some systems, the temperature can reach over 800℃. Through the above design, we can reduce the temperature of the exhaust airflow to a relatively safe level, greatly reducing the fire hazard and significantly reducing the cost of subsequent exhaust ductwork.

[0035] Example 2

[0036] like Figures 1-3 As shown, based on Embodiment 1, a control box 6 is provided below the outer casing 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 system operating temperature is maintained near the target temperature, achieving a balance between smoke removal effect and gas consumption, avoiding gas waste and poor smoke removal effect.

[0037] Specifically, during system operation, the burner emits flames to provide heat energy. The combustion control system detects the operating temperature of the smoke removal system through a temperature sensor and adjusts the gas consumption via a gas control valve. The combustion control system uses an automatic control algorithm to maintain the system operating temperature near the target temperature. This avoids both excessively high operating temperatures that waste energy and excessively low operating temperatures that fail to achieve the desired smoke removal effect.

[0038] Coffee only produces a large amount of smoke during the roasting process after the temperature exceeds the smoke point; no smoke is produced before that. Therefore, this patent achieves intelligent operation by setting up a communication data interface with the roaster in the control system and setting up automatic control and communication algorithms in the control system. This enables real-time communication between the smoke extractor and the coffee roaster, sending the roasting status of the roaster to the smoke extractor. Thus, when the roaster is in the roasting state and the material exceeds the smoke point, the smoke extraction heating is activated, which greatly reduces the gas consumption of the smoke extractor and realizes the automation and intelligence of the system operation.

[0039] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A safe and energy-saving smoke removal machine, characterized in that, The device includes an outer shell (1), a combustion chamber (10) is provided on the inner side of the outer shell (1), a preheating layer (9) is provided on the outer side of the combustion chamber (10), the preheating layer (9) and the bottom of the combustion chamber (10) are connected, and a sandwich layer (7) is formed between the preheating layer (9) and the outer shell (1); a fan (3) is provided on the top of the outer shell (1), the air inlet end of the fan (3) is connected to the sandwich layer (7) and the top of the combustion chamber (10), and the air outlet end of the fan (3) is set as an air outlet (4); an air inlet (2) is provided on the side wall of the outer shell (1), and the air inlet (2) is connected to the preheating layer (9).

2. The safe and energy-saving smoke extractor according to claim 1, characterized in that, The heights of the combustion chamber (10) and the preheating layer (9) are both less than the height of the inner space of the outer shell (1), and the bottoms of the combustion chamber (10) and the preheating layer (9) are at the same height and do not contact the bottom surface of the outer shell (1).

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

4. A safe and energy-saving smoke extractor according to claim 3, characterized in that, A flame burner (12) is provided at the bottom of the outer casing (1), and the flame burner (12) is directly opposite the opening at the bottom of the combustion chamber (10).

5. A safe and energy-saving smoke extractor according to claim 1, characterized in that, A heat insulation layer (8) is provided on the outer side wall of the preheating layer (9), and an observation port (13) is provided through the side wall of the heat insulation layer (8) and 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 extractor according to claim 3, characterized in that, After the gas enters the preheating layer (9) tangentially from the air inlet (2), it forms 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 extractor according to claim 1, characterized in that, A control box (6) is provided below the outer shell (1), and a control valve (16) and a control system (14) are provided inside the control box (6); a temperature sensor (17) is provided 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 extractor 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 connected to the bottom of the interlayer (7).

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