An oil fume purification system
By improving the exhaust pipe structure of the fume purification system to a rotary type, the problem of vertical exhaust pipes occupying upper space is solved, resulting in a smaller fume purification system that meets kitchen installation requirements and reduces noise emissions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU TIANFU ENVIRONMENTAL PROTECTION TECHCO LTD
- Filing Date
- 2025-08-20
- Publication Date
- 2026-07-10
AI Technical Summary
The existing fume purifiers have vertical exhaust pipes located above the washing tank, which results in a large space occupation, affecting the installation height in the kitchen and the use of the gas stove.
The traditional vertically installed discharge pipe has been improved into a rotary discharge channel consisting of a guide section, an internal pipe section, and an outlet pipe section. The guide section extends into the fume hood along the side of the washing tank, the internal pipe section is hidden inside the fume hood, and the outlet pipe section extends upward out of the fume hood. Combined with the noise reduction box design, it reduces the space occupied in the kitchen.
The height of the fume purification system has been reduced to meet the installation space requirements above the kitchen gas stove, reducing air pollution from direct emissions of fumes, and noise emissions have been reduced through noise reduction design.
Smart Images
Figure CN224479704U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of oil fume purification technology, and in particular to an oil fume purification system. Background Technology
[0002] An oil fume purifier includes a fan and a connected washing chamber. The washing chamber is connected to a vertical exhaust pipe. The fan draws in oil fumes, washes them with liquid in the washing chamber, and then discharges them through the vertical exhaust pipe. A disadvantage is that the vertical exhaust pipe is located at the top of the washing chamber, occupying upper space and resulting in a large size for the purifier. For example, Chinese Patent Publication No. CN203249298U, a utility model patent entitled "Oil Fume Purifier," has its air inlet on the side of the fan. It is suitable for integration into outdoor catering equipment such as barbecue grills. However, for kitchens, the large upper space and height of the vertical exhaust pipe, located above the washing chamber, prevents installation in a confined space, resulting in insufficient distance between the purifier and the gas stove, affecting stove operation. Furthermore, the side air inlet cannot effectively extract kitchen fumes. Summary of the Invention
[0003] The technical problem to be solved by this utility model is to provide an oil fume purification system to solve the problem that the rotary exhaust pipe is located above the washing box, which occupies a large amount of upper space and affects the height requirement for its installation in the kitchen.
[0004] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: an oil fume purification system, comprising: a fume hood with a smoke extraction hole for collecting oil fumes from cookware on a kitchen gas stove; a centrifugal fan disposed on the fume hood, the air inlet of the centrifugal fan being located at the bottom and connected to the smoke extraction hole of the fume hood, and the air outlet of the centrifugal fan being located on its side; a washing tank disposed on the fume hood near the centrifugal fan, the washing tank containing a washing basin for holding detergent, the washing basin being connected to the air outlet of the centrifugal fan through a duct; and a rotary discharge pipe comprising, in sequence, a guide section connected to the side of the washing tank and extending into the fume hood, a built-in pipe section hidden within the fume hood, and an outlet pipe section extending upwards from the fume hood, the outlet pipe section being located on one side of the centrifugal fan.
[0005] Furthermore, the fume purification system provided by this utility model further includes a noise reduction box vertically connected to the outlet pipe section in the rotary exhaust pipe.
[0006] Furthermore, in the oil fume purification system provided by this utility model, the washing tank is provided with an inlet for injecting detergent into the washing pool.
[0007] Furthermore, in the oil fume purification system provided by this utility model, the washing pool is connected to an overflow pipe extending into a built-in pipe section, and the built-in pipe section is provided with an overflow hole.
[0008] Furthermore, in the fume purification system provided by this utility model, the overflow hole is located on one side of the outlet pipe section.
[0009] Furthermore, in the fume purification system provided by this utility model, the fume collection hood is a side-suction type.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0011] The oil fume purification system provided by this utility model improves the traditional vertical exhaust pipe installed above the washing tank into a rotary exhaust channel composed of a guide section, an internal pipe section, and an outlet pipe section. The guide section extends along the side of the washing tank into the fume hood, the internal pipe section is hidden inside the fume hood, and the outlet pipe section extends upwards out of the fume hood. A centrifugal fan draws in oil fumes generated by cookware on the kitchen gas stove through the fume hood, and then sends them through the air duct to the detergent in the washing tank of the washing tank for cleaning and purification. The purified oil fumes are then discharged upwards from the fume hood through the rotary exhaust channel under the action of the centrifugal fan, thereby reducing air pollution from direct emissions of kitchen oil fumes. The rotary exhaust channel is partly located on the fume hood and partly hidden inside it, which does not occupy the upper space of the washing tank, reducing the height of the oil fume purification system and meeting the height space requirements for installation above the kitchen gas stove. Attached Figure Description
[0012] Figure 1 This is a three-dimensional structural diagram of an oil fume purification system;
[0013] Figure 2 This is a cross-sectional three-dimensional structural diagram of an oil fume purification system;
[0014] Figure 3 This is a cross-sectional front view schematic diagram of the fume purification system;
[0015] As shown in the figure:
[0016] 100. Fume purification system;
[0017] 110. Smoke hood;
[0018] 120. Centrifugal fan; 121. Air outlet;
[0019] 130. Washing tank; 131. Washing basin; 132. Guide pipe; 133. Overflow pipe; 134. Overflow hole; 135. Liquid inlet.
[0020] 140. Rotary discharge pipe; 141. Guide section; 142. Built-in pipe section; 143. Outlet pipe section; 144. Noise reduction box. Detailed Implementation
[0021] The present invention will now be described in detail with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.
[0022] Please refer to Figures 1 to 3 This utility model provides an oil fume purification system 100, including a fume collection hood 110, a centrifugal fan 120, a washing tank 130, and a rotary exhaust pipe 140, wherein:
[0023] The smoke hood 110 has a smoke extraction hole and is used to collect the oil fumes from the cookware on the kitchen gas stove.
[0024] A centrifugal fan 120 is mounted on the fume hood 110. The air inlet of the centrifugal fan 120 is located at the bottom and communicates with the smoke extraction hole of the fume hood 110. The air outlet 121 of the centrifugal fan 120 is located on its side. By placing the air inlet at the bottom of the centrifugal fan, it is suitable for use with gas stoves in outdoor kitchens.
[0025] A washing tank 130 is mounted on the fume hood 110 near the centrifugal fan 120. The washing tank 130 contains a washing basin 131 for holding detergent. The washing basin 131 is connected to the air outlet 121 of the centrifugal fan 120 via an air duct 132. The outlet end of the air duct 132 is sloped.
[0026] The rotary discharge pipe 140 includes a guide section 141 sequentially connected to the side of the washing tank 130 and extending into the fume hood 110, a built-in pipe section 142 concealed within the fume hood 110, and an outlet pipe section 143 extending upwards from the fume hood 110. The outlet pipe section 143 is located on one side of the centrifugal fan 120. That is, the guide section 141 and the outlet pipe section 143 are distributed on both sides of the centrifugal fan 120 and the washing tank 130, with the guide section 141 located on one side of the washing tank 130. To ensure unobstructed ventilation, the guide section 141, the built-in pipe section 142, and the outlet pipe section 143 are arranged in a U-shape.
[0027] Please refer to this carefully. Figure 1 and Figure 3The oil fume purification system 100 provided in this embodiment improves the traditional rotary exhaust pipe 140, which is vertically installed above the washing tank 130, into a rotary exhaust channel composed of a guide section 141, an internal pipe section 142, and an outlet pipe section 143. The guide section 141 extends along the side of the washing tank 130 into the fume hood 110, the internal pipe section 142 is hidden inside the fume hood 110, and the outlet pipe section 143 extends upward out of the fume hood 110. The centrifugal fan 120 draws in the oil fumes generated by the cookware on the kitchen gas stove through the fume hood 110, and sends them into the washing pool 131 of the washing tank 130 through the air guide pipe 132 for cleaning and purification. The purified oil fumes are discharged upward from the fume hood through the rotary exhaust channel under the action of the centrifugal fan 120, thereby reducing the air pollution caused by the direct emission of kitchen oil fumes. The rotary exhaust channel is partly located on the fume hood 110 and partly hidden inside the fume hood 110. It does not occupy the upper space of the washing box 130, thus reducing the height of the fume purification system 100 and meeting the height space requirements for installation above the gas stove in the kitchen. This increases the distance between the installed fume purification system 100 and the gas stove, without affecting the use of the gas stove.
[0028] Please refer to this carefully. Figure 1 To reduce noise emissions, the fume purification system 100 provided in this embodiment of the invention includes a noise reduction box 144 vertically connected to the outlet pipe section 143 of the rotary exhaust pipe 140. The rotary exhaust pipe 140 then consists of a guide section 141, an internal pipe section 142, an outlet pipe section 143, and a noise reduction box 144. The cross-sectional area of the noise reduction box 144 is larger than that of the outlet pipe section 143, thereby increasing the flow area to reduce noise emissions from the purified fume.
[0029] To facilitate the insertion of the connecting hose from the noise reduction box 144 into the flue, the upper port of the noise reduction box 144 can be slightly higher than the centrifugal fan 120. A flange can be provided at the upper port of the noise reduction box 144 for easy connection with the hose. The noise reduction box 144 can also be connected to the outlet pipe section 143 via a flange, as can the air guide duct 132 and the outlet 121 of the centrifugal fan 120. To prevent air leakage, a sealing ring can be provided at the flange joint. To facilitate the assembly and connection of the guide section 141 and the built-in pipe section 142, the guide section 141 can be broken in the middle and connected via a flange, so that the guide section 142 extending into the smoke hood 110 and the built-in pipe section 142 are an integral structure. Similarly, for ease of assembly, the outlet pipe section 143 can also be an integral structure with the built-in pipe section 142. That is, the built-in pipe section 142, part of the guide section 142, and the outlet pipe section 142 form a U-shaped structure.
[0030] Please refer to Figure 1In order to add detergent to the washing tank 131, the oil fume purification system 100 provided in this embodiment of the utility model has an inlet 135 for adding detergent to the washing tank 131. The inlet 135 is located at the top of the washing tank 130 so that the detergent can be injected by means of fluid from top to bottom, without the need for pumping.
[0031] Please refer to Figures 2 to 3 To avoid excessive detergent addition, the fume purification system 100 provided in this embodiment of the invention includes an overflow pipe 133 connected to the washing tank 131, extending into a built-in pipe section 142. The built-in pipe section 142 is provided with an overflow hole 134. When detergent is added to the washing tank 131 through the inlet 135, excess detergent will be discharged from the overflow pipe 133 into the built-in pipe section 142 and flow out through the overflow hole 134. This also prevents excessive detergent from being blown out of the rotary discharge pipe by the positive pressure of the centrifugal fan 120 during injection, thus avoiding noise and material waste.
[0032] To prevent spilled detergent from entering the cookware inside the gas stove, the oil fume purification system 100 provided in this embodiment of the invention has an overflow hole 134 located on one side of the outlet pipe section 143, thereby avoiding direct contact with the gas stove.
[0033] Please refer to Figure 1 In order to accommodate the built-in pipe section 142, the fume purification system 100 provided in this embodiment of the invention has a side-suction fume hood 110. Therefore, the side-suction fume hood, with its trapezoidal side shape, has installation space for the built-in pipe section 142 at the rear.
[0034] This utility model is not limited to the specific embodiments described above. Obviously, the embodiments described above are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art are within the scope of protection of this utility model. Those skilled in the art can make other levels of modifications and variations to this utility model. Therefore, if these modifications and variations of this utility model fall within the scope of the claims of this utility model, this utility model also intends to include these modifications and variations.
Claims
1. An oil fume purification system, characterized in that, include: A fume hood with smoke extraction holes is used to collect cooking fumes from cookware on a kitchen gas stove. A centrifugal fan is mounted on the fume hood, with its air inlet located at the bottom and connected to the fume hood's smoke extraction hole, and its air outlet located on its side. A washing tank is mounted on the fume hood near the centrifugal fan, containing a washing basin for holding detergent, which is connected to the centrifugal fan's air outlet via a duct. A rotary discharge pipe includes a guide section sequentially connected to the side of the washing tank and extending into the fume hood, a built-in pipe section concealed within the fume hood, and an outlet pipe section extending upwards from the fume hood, the outlet pipe section being located on one side of the centrifugal fan.
2. The oil fume purification system according to claim 1, characterized in that, The rotary discharge pipe also includes a noise reduction box that is vertically connected to the discharge pipe section.
3. The oil fume purification system according to claim 1, characterized in that, The washing tank is equipped with an inlet for injecting detergent into the washing pool.
4. The oil fume purification system according to claim 1, characterized in that, The washing basin is connected to an overflow pipe that extends into a built-in pipe section, and the built-in pipe section is provided with an overflow hole.
5. The oil fume purification system according to claim 4, characterized in that, The overflow hole is located on one side of the outlet pipe section.
6. The oil fume purification system according to claim 1, characterized in that, The smoke hood is a side-suction type.