A flat-plate type range hood with a condensing oil filter

Abstract

The application discloses a flat plate type oil fume extractor with a condensing oil filter, which comprises an air duct system, a smoke collecting hood, a flow guide flat plate and a condensing device; the bottom of the air duct system is communicated with the top end of the smoke collecting hood; the flow guide flat plate is installed on one side below the smoke collecting hood; an air inlet is formed below the flow guide flat plate; a smoke collecting cavity is arranged in the flow guide flat plate; the smoke collecting cavity is communicated with the air duct system; and the condensing device is arranged in the smoke collecting cavity. The condensing device has a large surface area; when oil fume gas passes through the condensing device, oil will be attached to the condensing device, so as to be separated from air, and the purpose of oil separation is achieved; finally, the gas discharged from the oil fume extractor is clean gas with a small oil content, so that the purpose of environmental protection is achieved; on the other hand, oil fume which has not been subjected to oil separation can be prevented from being attached to the air duct system in a large amount, the use of a motor and an impeller in the air duct system is affected, a large noise is generated, and the balance of the system is destroyed.

Description

Technical Field

[0001] This invention relates to the field of range hood technology, and in particular to a flat-plate range hood with a condenser filter. Background Technology

[0002] A range hood is a household appliance that removes cooking fumes and purifies the kitchen environment. During operation, the fumes are directly exhausted outdoors after passing through the range hood. This exhaust contains grease, which pollutes the atmosphere. With increasingly stringent environmental regulations, it's necessary to improve the grease separation efficiency of range hoods to ensure cleaner exhaust. Currently, most range hoods on the market lack specialized grease filters; their grease filtration relies on the adhesion effect of the rotating impeller. In practice, this grease separation is limited, and the exhaust still contains a significant amount of grease. Furthermore, the impeller is located at the end of the range hood. Grease-laden gas passes through other parts of the hood before reaching the impeller, significantly impacting the duct system, especially the motor. Over time, a large amount of grease accumulates on the motor and impeller, severely affecting the exhaust volume and disrupting the impeller's dynamic balance, causing vibration and increased noise. Summary of the Invention

[0003] To address the above problems, the purpose of this invention is to provide a flat-panel range hood with a condenser filter, which improves the grease separation efficiency of the range hood, reduces pollution, and reduces the adhesion of oil fumes to the motor and impeller during use, thereby reducing noise.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A flat-plate range hood with a condenser filter includes an air duct system, a smoke collection hood, a guide plate, and a condenser device; the bottom of the air duct system is connected to the top of the smoke collection hood; the guide plate is installed on one side below the smoke collection hood; an air inlet is provided below the guide plate, and a smoke collection chamber is provided inside the guide plate, which is connected to the air duct system; the condenser device is disposed in the smoke collection chamber.

[0006] Furthermore, the range hood also includes a concentration sensor, which is located inside the smoke collection chamber near the air inlet.

[0007] Furthermore, a baffle device is provided at the air inlet; the baffle device includes a motor, a bracket and a flap; the motor is installed on the inner wall of the smoke collection chamber; the output shaft of the motor is connected to one end of the bracket, and the other end of the bracket is connected to the flap.

[0008] Furthermore, the range hood also includes an oil collection tank; the oil collection tank is horizontally arranged at the lower end of the guide plate.

[0009] Furthermore, the condensation device consists of several condensation fins; the several condensation fins are arranged in a fan shape at equal intervals along the airflow direction in the smoke collection chamber; a flue gas channel is formed between two adjacent condensation fins; the flue gas channel is connected to the bottom end of the air duct system.

[0010] The beneficial effects of this invention are:

[0011] This invention provides a flat-panel range hood with a condenser filter. The duct system provides power to the range hood, generating gas flow. The smoke collection chamber creates a negative pressure zone; when oil fumes pass near the air inlet of the smoke collection chamber, they are drawn into the chamber and discharged towards the end of the duct system. The condenser is located within the smoke collection chamber and consists of several condenser fins arranged in a fan-shaped, equidistant pattern, forming dense airflow channels. The condenser has a large surface area; when oil fumes pass through these channels, grease adheres to the condenser fins, thus separating from the air and achieving grease separation. The final exhaust gas from the range hood is... The system produces clean gas with very low grease content, thus achieving environmental protection. On the other hand, it prevents unseparated grease fumes from adhering to the duct system, affecting the operation of the motor and impeller, generating loud noise, and disrupting the system's balance. Furthermore, the parallel-arranged condensing fins in the smoke collection chamber, oriented along the airflow direction, guide the airflow, preventing obstruction and rebound at the corners of the rectangular guide plate, thus reducing exhaust resistance. Comparative tests show that guide plates with condensing fins have higher airflow and lower noise levels compared to those without. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0013] Figure 2 This is a schematic diagram of the condensation device of the present invention;

[0014] Figure 3 This is a schematic diagram of the baffle device of the present invention.

[0015] In the diagram: 1. Duct system; 2. Smoke hood; 3. Guide plate; 4. Condensation device; 41. Condensation fins; 5. Air inlet; 6. Concentration sensor; 7. Baffle device; 71. Motor; 72. Bracket; 73. Flip plate; 8. Oil collection tank. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described below with reference to the accompanying drawings. In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0017] Example 1

[0018] Depend on Figures 1-3 As shown, this embodiment provides a flat-panel range hood with a condenser filter, including a duct system 1, a smoke collection hood 2, a guide plate 3, and a condenser device 4; the bottom of the duct system 1 is connected to the top of the smoke collection hood 2; the guide plate 3 is installed on one side below the smoke collection hood 2; an air inlet 5 is provided below the guide plate 3, and a smoke collection chamber is provided inside the guide plate 3, which is connected to the duct system 1; the condenser device 4 is disposed in the smoke collection chamber.

[0019] A flat-panel range hood with a condenser filter is disclosed. The range hood includes a control system for controlling the normal operation of the device. The duct system 1 includes a power source and a duct system. The power source provides power to the range hood, causing gas flow. The gas passes through the duct system and is discharged from the end of the duct system. The smoke collection chamber is used to create a negative pressure zone. An air inlet 5 is provided on the guide plate 3. Oil fumes are drawn into the smoke collection chamber near the air inlet 5. A condenser 4 is provided in the smoke collection chamber. When the oil fumes pass through the condenser 4, the grease will adhere to the condenser 4, thereby achieving grease separation from the air. The treated oil fumes are finally discharged through the duct system 1. At this time, the grease content in the oil fumes is relatively low, resulting in less air pollution and achieving green emissions. It also prevents oil fumes with a large amount of grease from adhering to the drive motor and impeller, generating noise and reducing the life of the device.

[0020] Example 2

[0021] Depend on Figures 1-3 As shown, this embodiment is an expansion of the above embodiment. Specifically, this embodiment provides a flat-panel range hood with a condenser filter. The range hood also includes a concentration sensor 6, which is located in the smoke collection chamber near the air inlet 5. The concentration sensor 6 is used to detect the concentration of oil fumes at the air inlet 5 and transmits the detected oil fume concentration signal to the range hood's control system. The control system adjusts the range hood's power according to the current oil fume concentration, so that the airflow can be automatically adjusted according to the oil fume concentration; the airflow is large when the oil fume concentration is high and small when the oil fume concentration is low.

[0022] Furthermore, a baffle device 7 is provided at the air inlet 5; the baffle device 7 includes a motor 71, a bracket 72, and a flap 73; the motor 71 is installed on the inner wall of the smoke collection chamber; the output shaft of the motor 71 is connected to one end of the bracket 72, and the other end of the bracket 72 is connected to the flap 73; when the range hood is turned off, the flap 73 closes, completely blocking the air inlet 5 to prevent dust from entering the smoke collection chamber, and also to make the oil stains inside the smoke collection chamber invisible to the naked eye, thus serving an aesthetic purpose; when the range hood is working, the flap 73 opens, allowing airflow to enter from the air inlet 5; in some preferred embodiments, the opening angle of the flap 73 can be any angle from 0° to 90°. When the air volume is low, the flap 73 opens at a small angle to obtain sufficient negative pressure; when the air volume is maximum, the flap 73 is fully open at 90°. The control system can control the opening angle of the flap 73 according to the air volume to meet the user's needs.

[0023] Furthermore, the range hood also includes an oil collection tank 8; the oil collection tank 8 is horizontally arranged at the lower end of the guide plate 3. In some preferred embodiments, the bottom of the guide plate 3 is provided with a hanging hole, and the oil collection tank 8 is set at the bottom of the guide plate 3 by a hook, which is a detachable connection, making it convenient to clean the oil collection tank 8 and the inside of the smoke collection chamber.

[0024] Furthermore, the condensation device 4 is composed of several condensation fins 41; the several condensation fins 41 are arranged in a fan shape at equal intervals along the airflow direction in the smoke collection chamber; a flue gas channel is formed between two adjacent condensation fins 41; the flue gas channel is connected to the bottom end of the air duct system 1. In some preferred embodiments, the condensation fins 41 are thin sheet metal plates, and the material of the condensation fins 41 can be aluminum alloy, stainless steel or other metal materials. The huge surface area formed between the condensation fins 41 increases the contact area with the oil fume gas, so that the oil fume gas is in full contact with the condensation surface. The grease molecules will adhere to the condensation surface and thus separate from the oil fume gas, and finally flow down along the condensation fins 41 and be collected by the bottom oil collection tank 8.

[0025] Example 3

[0026] Depend on Figures 1-3 As shown, this embodiment is an expansion based on the above embodiments. Specifically, this embodiment provides a working principle for a flat-panel range hood with a condenser oil filter:

[0027] When the range hood is running, the power source in the duct system 1 drives the impeller to rotate, generating airflow from bottom to top. The cooking fumes enter the smoke collection chamber through the air inlet 5 on the guide plate 3. The concentration sensor 6 detects the concentration of cooking fumes entering the air inlet 5 in real time. The range hood's control system adjusts the suction power according to the concentration of cooking fumes, and simultaneously adjusts the angle of the flap 73. Then, the fumes pass through the airflow channel formed between the condensing fins 41 inside the smoke collection chamber. When passing through the channel, the cooking fumes come into full contact with the condensing fins 41, and the grease in the fumes condenses on the surface of the fins, thus separating from the air. The fumes after passing through the condensing device 4 are airflows with less grease. The airflow continues to flow upward, passes through the duct system 1, and is finally discharged from the outlet of the duct system 1. Because the fumes after passing through the condensing filter have less grease, they will not cause significant pollution to the drive motor and impeller, thus protecting the drive motor and impeller. Furthermore, the condensing device 4 does not require energy to drive, further saving energy.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A flat panel range hood with a condensing oil filter, characterized by: The application relates to a smoke suction machine, which comprises an air duct system (1), a smoke hood (2), a flow guide flat plate (3) and a condensing device (4); the bottom of the air duct system (1) is communicated with the top end of the smoke hood (2); the flow guide flat plate (3) is installed on one side below the smoke hood (2); an air inlet (5) is arranged below the flow guide flat plate (3); the flow guide flat plate (3) is internally provided with a smoke collecting cavity which is communicated with the air duct system (1); the condensing device (4) is arranged in the smoke collecting cavity; the condensing device (4) is composed of a plurality of condensing fins (41); the condensing fins (41) are arranged in a fan shape at equal intervals along the airflow direction in the smoke collecting cavity; smoke gas channels are formed between two adjacent condensing fins (41); the smoke gas channels are communicated with the bottom end of the air duct system (1).

2. A flat panel range hood with a condensing oil filter according to claim 1, characterized in that: The smoke suction machine further comprises a concentration sensor (6) which is arranged in the smoke collecting cavity and close to the air inlet (5).

3. A flat panel range hood with a condensing oil filter according to claim 1, characterized in that: A baffle device (7) is arranged at the air inlet; the baffle device (7) comprises a motor (71), a support (72) and a turning plate (73); the motor (71) is installed on the inner side wall of the smoke collecting cavity; the output shaft of the motor (71) is connected with one end of the support (72), and the other end of the support (72) is connected with the turning plate (73).

4. A flat panel range hood with a condensing oil filter according to claim 1, characterized in that: The smoke suction machine further comprises an oil collecting groove (8); the oil collecting groove (8) is horizontally arranged at the lower end of the flow guide flat plate (3).

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