Kitchen flue gas purification system

Abstract

The utility model relates to a kitchen flue gas purification system which comprises a flue gas conveying pipe, a range hood and a fan, one end of the range hood communicates with the flue gas conveying pipe, and the range hood is used for pumping kitchen flue gas into the flue gas conveying pipe; the bottom of the flue gas conveying pipe is provided with collecting tanks which are communicated with one another, the flue gas conveying pipe is internally and sequentially provided with a detachable primary filter screen, oil gas filter cotton and an activated carbon filter screen, the other end of the range hood is further provided with a cleaning tank, and the cleaning tank is internally provided with a spraying head; by means of multiple purification means such as the primary filter screen, the oil gas filter cotton, the activated carbon filter screen and spray cleaning, the system can effectively remove pollutants such as grease, particulate matter, peculiar smell and harmful gas in oil smoke, and the quality of exhausted smoke is remarkably improved.

Description

Technical Field

[0001] The present application relates to the technical field of fume purification, and in particular to a kitchen fume purification system. Background Art

[0002] In modern kitchen environments, cooking fumes are an inevitable byproduct. These fumes not only contain a large amount of grease particles, water vapor, food residues, etc., but may also contain volatile organic compounds (VOCs) and particulate matter that are harmful to the human body.

[0003] Currently, kitchen fumes are primarily collected by range hoods and discharged directly outdoors through fume ducts. However, during the fume ducting process, due to the drop in temperature and slowing flow rate, grease particles in the fumes tend to deposit on the inner walls of the ducts, particularly at the duct outlets and near the kitchen exterior walls. These deposits gradually accumulate and form visible oil stains. This not only affects the aesthetics of the kitchen and its surroundings but also increases the difficulty and cost of cleaning. More seriously, long-term accumulation of oil stains can become a breeding ground for bacteria, posing a potential threat to food safety and the health of residents.

[0004] Secondly, direct cooking fumes still contain a certain amount of particulate matter and VOCs. These pollutants, when dispersed outdoors, can pollute the surrounding environment and affect air quality. This is particularly problematic in densely populated urban areas or residential areas, where cooking fume emissions can easily lead to complaints from residents and even environmental disputes.

[0005] In response to the above problems, a kitchen fume purification system is now designed. Utility Model Content

[0006] An embodiment of the present application provides a kitchen fume purification system to solve the problem in the related art that kitchen fume is discharged through a range hood and a pipe, causing pollution near the pipe outlet and the kitchen outer wall.

[0007] In a first aspect, a kitchen fume purification system is provided, comprising:

[0008] A fume duct, a range hood and a fan, wherein one end of the range hood is connected to the fume duct and is used to draw kitchen fume into the fume duct;

[0009] The bottom of the smoke conveying pipe is provided with a collection tank that is interconnected. A detachable primary filter, oil and gas filter cotton and activated carbon filter are sequentially provided inside the smoke conveying pipe. The collection tank is located below the oil and gas filter cotton and is used to collect fallen grease;

[0010] The other end of the range hood is further provided with a cleaning tank, and a spray head is provided inside the cleaning tank. The other end of the spray head is connected to the external liquid supply pipe and is used to spray the smoke inside the cleaning tank;

[0011] The air inlet of the fan is communicated with the cleaning tank.

[0012] In some embodiments, the primary filter is a metal filter, the oil and gas filter cotton is arranged between the metal filter and the activated carbon filter, and the metal filter is located at one end close to the range hood.

[0013] In some embodiments, the smoke conveying pipe is Z-shaped, and is provided with three groups of inspection ports, each of which is provided with sealing covers by bolts;

[0014] The three sets of inspection ports are located above the metal filter, activated carbon filter and oil and gas filter cotton respectively.

[0015] In some embodiments, three groups of plugs are provided inside the smoke conveying pipe, and each group of plugs contains two plugs arranged opposite to each other.

[0016] The plug-in block is U-shaped, and the metal filter screen, the activated carbon filter screen and the oil and gas filter cotton are sequentially plugged into the corresponding plug-in blocks.

[0017] In some embodiments, the collection tank includes a storage box disposed on the smoke conveying pipe, the storage box is communicated with the smoke conveying pipe, and is located at the bottom of the oil and gas filter cotton;

[0018] The bottom of the storage box is threadedly connected with a tank body, and the tank body is communicated with the storage box.

[0019] In some embodiments, the smoke conveying pipe is connected to the lower part of the side wall of the cleaning tank, the air inlet of the fan is connected to the upper part of the side wall of the cleaning tank, and the spray head is located below the connection part between the fan and the cleaning tank.

[0020] The embodiment of the present application provides a kitchen fume purification system. Through multiple purification methods such as primary filter, oil and gas filter cotton, activated carbon filter and spray cleaning, this system can effectively remove pollutants such as grease, particulate matter, odor and harmful gases in the fume, significantly improving the quality of the exhaust gas.

[0021] By reducing the corrosion and clogging effects of oil smoke on equipment such as range hoods and fans, this system helps extend the service life of kitchen equipment and reduce maintenance costs.

[0022] The purified kitchen environment is fresher and healthier, which helps improve the quality of life and health of residents. At the same time, it reduces the pollution of kitchen fumes to the kitchen exterior walls and surrounding environment, which also helps to improve the overall aesthetics and comfort of the living environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 Schematic diagram of the three-dimensional structure provided in the embodiment of this application Figure 1 ;

[0025] Figure 2 Schematic diagram of the three-dimensional structure provided in the embodiment of this application Figure 2 ;

[0026] Figure 3 A front cross-sectional view of a smoke conveying pipe provided in an embodiment of the present application;

[0027] Figure 4 A left side sectional view of the smoke delivery pipe and collection tank provided in an embodiment of the present application;

[0028] Figure 5 This is a left side sectional view of the cleaning tank provided in an embodiment of the present application.

[0029] In the figure: 1. Flue gas conveying pipe; 11. Primary filter; 12. Oil and gas filter cotton; 13. Activated carbon filter; 2. Range hood; 3. Cleaning tank; 31. Sprinkler head; 4. Fan; 5. Insert block; 6. Collection tank; 61. Storage box; 62. Tank body. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0031] The embodiment of the present application provides a kitchen fume purification system, which can solve the problem in the related art that the discharge of kitchen fume through a range hood and a pipe causes pollution near the pipe outlet and the kitchen outer wall.

[0032] See also Figure 1-Figure 3 A kitchen fume purification system includes a fume duct 1, a range hood 2, and a fan 4. One end of the range hood 2 is connected to the fume duct 1 and is used to draw kitchen fume into the fume duct 1. A collection tank 6 is provided at the bottom of the fume duct 1, which is interconnected. A removable primary filter 11, an oil and gas filter 12, and an activated carbon filter 13 are sequentially provided inside the fume duct 1. The collection tank 6 is located below the oil and gas filter 12 and is used to collect dripping grease. A cleaning tank 3 is also provided at the other end of the range hood 2. A spray head 31 is provided inside the cleaning tank 3. The other end of the spray head 31 is connected to an external liquid supply pipe and is used to spray the fume inside the cleaning tank 3. The air inlet of the fan 4 is connected to the cleaning tank 3. The air outlet of the fan 4 is connected to the exhaust pipe.

[0033] Smoke collection and preliminary filtration: The oil smoke generated during cooking is first sucked into the range hood 2, and through its strong suction, the oil smoke is quickly introduced into the smoke conveying pipe 1. After the smoke enters the conveying pipe, it first passes through the primary filter 11, which can effectively intercept large particles of impurities, and the activated carbon filter 13 absorbs some odors and harmful gases in the oil smoke.

[0034] Oil and Gas Separation and Collection: After initial filtration, the oil smoke continues along the smoke duct 1 and then passes through the oil and gas filter 12. Made of a highly efficient oil-absorbing material, the oil and gas filter further removes grease particles from the smoke, trapping them on the filter. Over time, the grease accumulates on the filter and drips into the collection tank 6 below, achieving oil and gas separation and centralized collection.

[0035] Spray Cleaning and Deep Purification: After oil and gas separation, the flue gas enters the cleaning tank 3. Inside the tank, a spray head 31 sprays the flue gas with a cleaning liquid, such as water or a specialized cleaning agent, introduced through an external liquid supply pipe. During the spraying process, the cleaning liquid fully contacts residual grease and fine particulate matter in the flue gas, further purifying the flue gas.

[0036] Efficient Exhaust and Discharge: The deeply purified flue gas finally enters fan 4. Once activated, the fan generates a powerful suction force, drawing clean air from the cleaning tank and discharging it outdoors through an exhaust pipe connected to the air outlet. Because the flue gas has undergone multiple stages of filtration and cleaning, its discharge quality is significantly improved, meeting environmental standards and reducing pollution to the surrounding environment.

[0037] Through multiple purification methods such as primary filter, oil and gas filter cotton 12, activated carbon filter 13 and spray cleaning, this system can effectively remove pollutants such as grease, particulate matter, odor and harmful gases in the smoke, significantly improving the quality of the exhaust gas.

[0038] By reducing the corrosion and clogging effects of oil smoke on equipment such as range hoods and fans, this system helps extend the service life of kitchen equipment and reduce maintenance costs.

[0039] The purified kitchen environment is fresher and healthier, which helps improve the quality of life and health of residents. At the same time, it reduces the pollution of kitchen fumes to the kitchen exterior walls and surrounding environment, which also helps to improve the overall aesthetics and comfort of the living environment.

[0040] It should be noted that the cleaning liquid in this embodiment is clean water or an alkaline solution. Clean water is suitable for treating waste gas with low VOC concentrations and relatively simple components. Clean water comes into contact with the waste gas through spraying, which can absorb some water-soluble VOCs and particulate matter.

[0041] When the exhaust gas contains acidic VOCs, an alkaline solution such as sodium hydroxide solution can be selected as the washing water. Through the acid-base neutralization reaction, the acidic VOCs are converted into salts, thereby achieving the purpose of purifying the exhaust gas.

[0042] Same

[0043] Specifically, in this embodiment, the primary filter 11 includes a metal filter, the oil and gas filter cotton 12 is arranged between the metal filter and the activated carbon filter 13, and the metal filter is located at one end close to the range hood 2.

[0044] The metal filter near one end of the range hood 2 is mainly responsible for intercepting large particles of impurities in the smoke, such as food residues, large oil droplets, etc. The metal material has the characteristics of high strength and corrosion resistance, can maintain the filtering effect for a long time, and is not easy to clog.

[0045] The oil and gas filter 12, located in the middle, filters out grease particles from the oil smoke. Since the oil smoke has already been initially intercepted by the metal filter, the oil and gas filter primarily targets smaller grease particles. These grease particles are intercepted and absorbed by the filter's fiber structure as they pass through, eventually dripping into the collection tank 6 below.

[0046] Following the metal filter is the activated carbon filter 13, which utilizes the strong adsorption properties of activated carbon to effectively remove odors, harmful gases such as formaldehyde and benzene, and some small particles from cooking fumes. The porous structure of activated carbon provides a large number of adsorption sites for these pollutants, achieving a highly effective purification effect.

[0047] Specifically, such as Figure 4 As shown, the flue gas conveying pipe 1 in this embodiment is Z-shaped, and three groups of inspection ports are opened on the flue gas conveying pipe 1, and sealing covers are provided on the three groups of inspection ports through bolts; the three groups of inspection ports are respectively located above the metal filter screen, the activated carbon filter screen 13 and the oil and gas filter cotton 12.

[0048] The first set of inspection ports is located directly above the metal filter, allowing users to clean or replace the metal filter without disassembling the entire system.

[0049] The second set of inspection ports corresponds to the position of the activated carbon filter 13, making the maintenance of the activated carbon filter simple and quick.

[0050] The third set of inspection ports is located above the oil and gas filter cotton 12, which is also convenient for daily inspection, cleaning or replacement of the oil and gas filter cotton.

[0051] All three inspection ports are bolted with sealing covers to prevent gas leakage during normal system operation, maintaining system sealing and purification effectiveness. The bolted sealing covers also allow users to easily open and close the inspection ports for necessary maintenance.

[0052] The Z-shaped design and access ports allow users to easily access and inspect the working status of each filter element. When cleaning or replacing the filter, simply open the corresponding access port seal, significantly saving maintenance time and costs.

[0053] In one embodiment, Figure 4 As shown, three groups of plug-ins 5 are provided inside the flue gas conveying pipe 1, and the number of the plug-ins 5 in one group is two and they are arranged opposite to each other; the plug-ins 5 are U-shaped, and the metal filter, activated carbon filter 13 and oil and gas filter cotton 12 are sequentially inserted into the corresponding plug-ins 5.

[0054] The three sets of inserts 5 correspond to and support the metal filter, activated carbon filter 13, and oil / gas filter 12, respectively. The U-shaped inserts have slots inside that match the edges of the filter elements. To install or replace a filter element, simply insert the corresponding filter element into the corresponding insert 5 for secure installation. This plug-in design not only simplifies installation but also ensures the filter elements' tightness and stability.

[0055] In one embodiment, Figure 3 and Figure 4 As shown, the collection tank 6 includes a storage box 61 arranged on the flue gas conveying pipe 1, the storage box 61 is connected to the flue gas conveying pipe 1, and is located at the bottom of the oil and gas filter cotton 12; the bottom of the storage box 61 is threadedly connected to a tank body 62, and the tank body 62 is connected to the storage box 61.

[0056] The storage box 61 is located at the bottom of the oil and gas filter cotton 12, ensuring that the grease dripping from the filter cotton can accurately fall into the storage box.

[0057] The tank body 62 is tightly combined with the storage box 61 by a threaded connection. This connection method not only ensures the firmness of the connection, but also makes it easy for the user to easily remove the tank body from the storage box for cleaning or replacement when needed.

[0058] It should be noted that the smoke conveying pipe 1 is connected to the lower part of the side wall of the cleaning tank 3, the air inlet of the fan 4 is connected to the upper part of the side wall of the cleaning tank 3, and the spray head 31 is located below the connection between the fan 4 and the cleaning tank 3. A drain valve is provided at the bottom of the cleaning tank 3.

[0059] One end of the fume conveying pipe 1 is connected to the lower part of the side wall of the cleaning tank 3. This design allows the oil smoke after preliminary filtration to directly enter the cleaning tank for further purification.

[0060] The air inlet of the fan 4 is arranged on the upper part of the side wall of the cleaning tank 3, forming an air flow channel with the inside of the cleaning tank 3. Such a layout ensures that the clean air after spraying and washing can be smoothly sucked into the fan and discharged outdoors through the fan.

[0061] The spray head 31 is located below the connection between the fan 4 and the cleaning tank 3. This ensures that the sprayed water mist or detergent can fully contact and act on the cooking fumes. When cooking fumes enter the cleaning tank, they first pass through the spray area, where they are washed by the water mist or detergent, removing any residual grease and fine particles.

[0062] A drain valve is provided at the bottom of the cleaning tank 3 for discharging waste water and impurities generated during the cleaning process.

[0063] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0064] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises", "includes" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0065] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A kitchen fume purification system, characterized in that: include: A smoke conveying pipe (1), a range hood (2) and a fan (4), wherein one end of the range hood (2) is connected to the smoke conveying pipe (1) and is used to draw kitchen smoke into the smoke conveying pipe (1); The bottom of the smoke conveying pipe (1) is provided with a collection tank (6) that is interconnected. A detachable primary filter (11), oil and gas filter cotton (12) and an activated carbon filter (13) are sequentially provided inside the smoke conveying pipe (1). The collection tank (6) is located below the oil and gas filter cotton (12) and is used to collect fallen grease. The other end of the range hood (2) is further provided with a cleaning tank (3), a spray head (31) is provided inside the cleaning tank (3), and the other end of the spray head (31) is connected to an external liquid supply pipe and is used to spray the smoke inside the cleaning tank (3); The air inlet of the fan (4) is in communication with the cleaning tank (3).

2. The kitchen fume purification system according to claim 1, characterized in that: The primary filter (11) is a metal filter, the oil and gas filter cotton (12) is arranged between the metal filter and the activated carbon filter (13), and the metal filter is located at one end close to the range hood (2).

3. A kitchen fume purification system according to claim 2, characterized in that: The smoke conveying pipe (1) is Z-shaped, and is provided with three groups of inspection ports, each of which is provided with sealing covers by bolts; The three groups of inspection ports are respectively located above the metal filter screen, the activated carbon filter screen (13) and the oil and gas filter cotton (12).

4. The kitchen fume purification system according to claim 2, characterized in that: Three groups of plug-in blocks (5) are provided inside the smoke conveying pipe (1), and the number of the plug-in blocks (5) in one group is two and they are arranged opposite to each other; The plug-in block (5) is U-shaped, and the metal filter screen, the activated carbon filter screen (13) and the oil and gas filter cotton (12) are sequentially plugged into the corresponding plug-in block (5).

5. The kitchen fume purification system according to claim 1, characterized in that: The collecting tank (6) comprises a storage box (61) arranged on the smoke conveying pipe (1), the storage box (61) is in communication with the smoke conveying pipe (1) and is located at the bottom of the oil and gas filter cotton (12); The bottom of the storage box (61) is threadedly connected to a tank body (62), and the tank body (62) is communicated with the storage box (61).

6. The kitchen fume purification system according to claim 1, characterized in that: The smoke conveying pipe (1) is connected to the lower part of the side wall of the cleaning tank (3), the air inlet of the fan (4) is connected to the upper part of the side wall of the cleaning tank (3), and the spray head (31) is located below the connection part between the fan (4) and the cleaning tank (3).

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