An anti-backflow diversion sterilization device for a common flue

Abstract

An anti-backflow diversion and sterilization device for a common flue, belonging to the technical field of common flues. It includes a device housing, on which there is an oil fume diversion structure and an ultraviolet lamp. The oil fume diversion structure includes a group of V-shaped diversion blocks, which are arranged along the direction of flue gas flow. Inside the V-shaped diversion blocks, there is a waste heat recovery device, and there is an electrical signal connection between the waste heat recovery device and the ultraviolet lamp to provide electrical energy for the ultraviolet lamp. In the present invention, the V-shaped diversion blocks provided can effectively prevent oil fumes from flowing back into the room; through the ultraviolet lamp provided, mosquitoes, flies, mice and ants can be driven away to optimize the flue environment; through the waste heat recovery device provided, the waste heat of the flue gas can be recovered to provide electrical energy for the ultraviolet lamp.

Description

Technical Field

[0001] The present invention belongs to the technical field of common flues, and particularly relates to an anti-backflow diversion sterilization device for a common flue. Background Art

[0002] At present, 68% of urban residences in China are high-rise residences. To protect the low-altitude air quality and save residential area, centralized smoke exhaust systems are generally adopted in high-rise residences. The centralized smoke exhaust system has brought great convenience to urban development, but at the same time, it has also brought problems such as oil fume backflow and difficult smoke exhaust for low-floor residents, causing troubles to low-floor residents. Inventing a new common flue structure is of great significance to the quality of residents' lives and physical health.

[0003] As a major pollutant, oil fume may induce various diseases, including cardiovascular diseases, lung cancer, skin diseases, respiratory diseases, etc. Research shows that long-term exposure to aldehydes, ketones and their derivatives in oil fume has an obvious stimulating effect on people's eyes and respiratory systems, and is prone to induce cardiovascular and cerebrovascular diseases. And scientific research has confirmed that aldehyde derivatives in oil fume can also induce cell carcinogenesis. There is also a carcinogenic substance called benzo(a)pyrene in kitchen oil fume, which is also one of the main harmful substances that easily induces lung tissue carcinogenesis. Kitchen oil fume can not only enter the human respiratory tract with the air, but also cause symptoms such as reduced appetite, restlessness, listlessness, drowsiness, fatigue and weakness.

[0004] Low-floor residents have difficulty in exhausting smoke due to the long smoke exhaust path and large frictional resistance along the way; to solve the problem of difficult smoke exhaust for low-floor users, a variable-pressure flue design has been proposed, but there are the following problems:

[0005] 1. In the variable-pressure flue design, a deflector is set to adjust the cross-sectional area of the main flue, change the dynamic pressure of the upward flowing flue gas, and increase its flow velocity. To achieve the best diversion effect, the oil fume flow conditions on different floors need to be considered, which objectively increases the design difficulty and is basically not feasible from an economic perspective.

[0006] 2. In the above variable-pressure flue, a series of deflectors are set at the outlet of the flue branch pipe. In theory, the flow velocity can be increased, but in fact, the actual flow area of the flue is reduced, and after continuous variable pressure, the kinetic energy of the flue gas is greatly consumed, resulting in more difficult smoke exhaust for low-floor users.

[0007] At the same time, a large amount of oil fume adheres to the common flue. The organic matter in the oil fume nourishes a large number of bacteria, and there are also activities of animals such as mice and cockroaches, forming a gray ecology in the building, which is a major hidden danger to residents' health. And the common flue is relatively closed, and it is very difficult to enter and clean after the building is completed. Therefore, inventing a sterilization device that can work in the common flue is of great significance. Summary of the Invention

[0008] In view of the above problems existing in the prior art, the object of the present invention is to provide a backflow prevention and diversion sterilization device for a public flue, which can prevent the backflow of oil smoke, optimize the flue environment, and make full use of the waste heat of the flue gas.

[0009] The present invention provides the following technical solution: a backflow prevention and diversion sterilization device for a public flue, comprising a device shell, on which a fume diversion structure and an ultraviolet lamp are provided, the fume diversion structure comprising a group of V-shaped diversion blocks, the V-shaped diversion blocks are arranged along the direction of flue gas flow, a waste heat recovery device is arranged inside the V-shaped diversion blocks, and an electrical signal connection is between the waste heat recovery device and the ultraviolet lamp to provide electrical energy for the ultraviolet lamp.

[0010] Furthermore, a group of the V-shaped guide blocks are arranged in sequence along the inner side wall of the device shell, and the outer side surface of the V-shaped guide block is an arc-shaped curved surface structure.

[0011] Furthermore, the lower end of the V-shaped guide block is a streamlined structure, and the upper end is an arc-shaped concave structure. According to the knowledge of fluid mechanics, the direction of the pressure gradient is perpendicular to the contact surface, and the boundary layer flow in the fluid is affected by the pressure gradient. The design of the V-shaped guide block in the flue gas flow field changes the direction of the pressure gradient, which can effectively reduce the thickness of the boundary layer and achieve the effect of reducing the shear force between the fluid and the wall. Therefore, when the external exhaust smoke of the bottom-level users flows through the V-shaped guide block, the dynamic pressure of the flow field is changed, and the upward resistance is greatly reduced. Moreover, because the cross-sectional area of ​​the public flue has not changed significantly, the disadvantages of the traditional transformer plate are avoided.

[0012] Furthermore, the V-shaped guide block is provided with perforations, which are arranged along the length direction thereof.

[0013] Furthermore, the waste heat recovery device uses semiconductor thermoelectric materials, which utilize the inverse principle of the Peltier principle to convert waste heat in the flue gas into electrical potential energy through the waste heat recovery device and interact with the ultraviolet lamp to achieve waste heat recovery and utilization of the flue gas.

[0014] By adopting the above technology, compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1) The V-shaped guide block provided in the present invention can effectively prevent the oil smoke from flowing back into the room; the ultraviolet lamp provided can drive away mosquitoes, rats and ants and optimize the flue environment; the waste heat recovery device provided can recover the waste heat of the flue gas to provide electrical energy for the ultraviolet lamp;

[0016] 2) In the present invention, the streamlined design of the lower end of the V-shaped guide block reduces the boundary layer thickness of the exhaust smoke flowing through the guide plate, reduces the viscous resistance of the exhaust smoke flow, and at the same time, the design of the V-shaped arc concave structure at the upper end can guide the countercurrent smoke back to the exhaust path, further improving the anti-backflow effect;

[0017] 3) In the present invention, the provided waste heat recovery device is linked with the ultraviolet lamp in the flue to drive away mosquitoes, rats and ants and achieve a bactericidal and disinfection effect on the surface of the flue, realizing the efficient utilization of flue gas waste heat, improving the energy utilization efficiency, and maximizing the protection of residents' health.

[0018] 4) In the present invention, the waste heat recovery device adopts thermoelectric materials. The presence of the thermoelectric materials makes the deflector have a certain temperature, which can prevent oil droplets from adhering to the surface of the deflector and affecting the deflector effect. Moreover, the V-shaped deflectors are uniformly designed and concentrated at the bottom layer of the flue, reducing the design cost and installation cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a schematic diagram of the internal structure of the V-shaped deflector block of the present invention;

[0021] Figure 3 is a schematic diagram of the flue gas flow at the V-shaped deflector block of the present invention;

[0022] Figure 4 is a schematic diagram of the structure at the lower end of the V-shaped deflector block of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings of the specification and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] On the contrary, the present invention covers any alternatives, modifications, equivalent methods and solutions made within the essence and scope of the present invention defined by the claims. Further, in order to enable the public to better understand the present invention, some specific details are described in detail in the following detailed description of the present invention. Those skilled in the art can fully understand the present invention without the description of these details.

[0025] Please refer to Figures 1-4 , an anti-backflow deflector and sterilization device for a common flue, including a device housing 2. The device housing 2 has a quadrilateral box structure, and a plurality of V-shaped deflector blocks 1 are arranged at intervals on its inner side wall in sequence. The plurality of V-shaped deflector blocks 1 form an oil fume deflector structure. A waste heat recovery device 4 is arranged inside the V-shaped deflector block 1, and an ultraviolet lamp 3 is arranged at the corner inside the box structure. An electrical signal connection is provided between the waste heat recovery device 4 and the ultraviolet lamp 3 to supply electrical energy to the ultraviolet lamp 3.

[0026] Specifically, the outer side of the V-shaped flow deflector 1 is an arc-shaped curved surface structure. Through this arc-shaped curved surface structure design, the reverse-flow flue gas can be induced to flow back; the lower end of the V-shaped flow deflector 1 is a streamlined structure, enabling the discharged flue gas to pass smoothly. When the fluid flows through the V-shaped flow deflector 1, the boundary layer thickness will decrease, thereby reducing the flow resistance of the discharged flue gas.

[0027] The upper end of the V-shaped flow deflector 1 is an arc-shaped concave surface structure, which increases the resistance of the downward flowing flue gas in the form of an arc surface, induces the reverse-flow flue gas to flow back, and returns to the discharge path.

[0028] The V-shaped flow deflector 1 is provided with perforations 101 along its length direction, so that the oil droplets remaining after the oil fume flows through can be discharged from the perforations 101, rather than staying on the arc surface at the upper end of the V-shaped flow deflector 1. The inner wall of the perforations 101 is made of an insulating material with a smoothness requirement to prevent the dust in the flue from being adsorbed in the perforations 101 due to static electricity and mixing with the oil fume to block the perforations 101.

[0029] The V-shaped flow deflectors 1 have a unified structure and are mainly arranged in the bottom flue, reducing the design and installation costs.

[0030] Specifically, the waste heat recovery device 4 uses semiconductor thermoelectric materials. It uses the reverse principle of the Peltier principle to convert the waste heat in the flue gas into electric potential energy through the waste heat recovery device 4 and is linked with the ultraviolet lamp 3 to realize the recovery and utilization of the waste heat in the flue gas.

[0031] Above the waste heat recovery device is the hot end electrode 401, below are the cold end electrode 403 and the heat sink 404. The heat sink 404 is connected to the wall to dissipate heat to the wall, and P-type and N-type semiconductors 402 are densely arranged in the middle.

[0032] When two different conductors are connected, if the two connection points maintain different temperature differences, a thermoelectric potential difference will be generated in the conductor:

[0033] ES = S·△T

[0034] In the formula:

[0035] ES is the thermoelectric potential difference

[0036] S: is the thermoelectric power

[0037] △T: is the temperature difference between the joints

[0038] The waste heat in the flue gas is captured by the hot end electrode 401, transferred to the cold end electrode 403 and the heat sink 404 through the semiconductor. Through the above process, the waste heat recovery device 4 converts the thermoelectric potential generated by the temperature difference into current, and the generated electric energy is stored in the capacitor and can supply energy to the ultraviolet lamp 3 at a set time.

[0039] Specifically, the ultraviolet lamp 3 can drive away mosquitoes, insects, rats and ants and optimize the flue environment.

[0040] The working principle of the device in this embodiment is as follows:

[0041] When the exhaust gas passes through the V-shaped guide block 1, the exhaust gas passes smoothly through the streamlined structure at the lower end of the guide plate. When the fluid flows through the V-shaped guide block 1, the boundary layer thickness will decrease, thereby reducing the flow resistance of the exhaust gas. When the countercurrent exhaust gas passes through the V-shaped guide block 1, the arc-shaped concave surface at the upper end of the V-shaped guide block 1 increases the resistance of the countercurrent smoke, inducing the countercurrent smoke to reflux and return to the exhaust path.

[0042] At the same time, the waste heat recovery device 4 uses the inverse principle of the Peltier principle to convert the waste heat in the flue gas into electrical potential energy through semiconductor materials, thereby working together with the ultraviolet lamp 3 installed in the flue to achieve the recovery and utilization of flue gas waste heat; after the ultraviolet lamp 3 is turned on, under the irradiation of short-wave ultraviolet rays, the genetic material structure in the microorganisms will be destroyed, and they will not be able to grow and reproduce normally and will eventually die. Moreover, the use of ultraviolet lamp 3 does not leave any chemical residues, and it can drive away mosquitoes, insects, rats and ants, thereby objectively optimizing the flue environment.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anti-backflow diversion and sterilization device for a common flue, characterized in that: The device comprises a housing (2), the housing (2) being provided with an oil fume guide structure and an ultraviolet lamp (3), the oil fume guide structure comprising a group of V-shaped guide blocks (1), the V-shaped guide blocks (1) being arranged along the direction of smoke flow, a waste heat recovery device (4) being arranged inside the V-shaped guide blocks (1), the waste heat recovery device (4) being connected to the ultraviolet lamp (3) by an electrical signal to provide electrical energy for the ultraviolet lamp (3); The outer side surface of the V-shaped guide block (1) is an arc-shaped curved surface structure, the lower end of the V-shaped guide block (1) is a streamlined structure, and the upper end is an arc-shaped concave structure.

2. The anti-backflow diversion sterilization device for a common flue according to claim 1, characterized in that A group of the V-shaped guide blocks (1) are arranged in sequence and at intervals along the inner side wall of the device housing (2).

3. The anti-backflow diversion sterilization device for a common flue according to claim 2, characterized in that The V-shaped guide block (1) is provided with a perforation (101), and the perforation (101) is arranged along the length direction thereof.

4. The anti-backflow diversion sterilization device for a common flue according to claim 1, wherein The waste heat recovery device (4) uses semiconductor thermoelectric materials and utilizes the inverse principle of the Peltier principle to convert waste heat in the flue gas into electrical potential energy through the waste heat recovery device (4) and to operate in conjunction with the ultraviolet lamp (3), thereby realizing waste heat recovery and utilization of the flue gas.

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