An oil fume extractor and a method for separating oil fume

Abstract

The present invention discloses an oil fume extractor and a method for separating oil fume, including a smoke collecting hood and a fan hood that are interconnected. A receiving cavity is formed on the smoke collecting hood, and a hollow oil fume passage box is fitted into the receiving cavity. An air inlet is provided between one side of the receiving cavity and the oil fume passage box. An air guiding hole and an air outlet hole that are communicated with the air inlet through a pipeline are formed on the oil fume passage box. A receiving groove for placing a cleaning liquid is provided at the bottom of the oil fume passage box. A storage basket is also included and placed in the receiving groove. Ceramic or metal particles are placed in the storage basket. A driving member for controlling the lifting of the storage basket along a sliding track is provided at the top of the oil fume passage box. When the machine is turned on, the storage basket is pulled up by the driving member, and under the action of negative pressure, the oil fume passes through the gaps between the ceramic or metal particles, and the oil molecules are attached to its surface to achieve oil fume separation. When the machine is turned off, the storage basket is pushed down along the sliding track into the receiving groove and soaked in the cleaning liquid.

Description

Technical Field

[0001] The present invention relates to the field of range hoods, specifically to household range hoods, and more particularly to a range hood capable of promoting rapid separation of oil smoke and a method for promoting rapid separation of oil smoke. Background Art

[0002] With the improvement of living standards, range hoods have entered thousands of households and are used to purify the kitchen environment. Almost all range hoods currently used are powered by motors, which make the wind wheel rotate at high speed, forming a negative pressure area in a certain space above the stove, and sucking the kitchen fume gas into the range hood. The fume gas is filtered through the oil net for the first fume separation, and then enters the air duct of the range hood. The fume gas is separated for the second time by the rotation of the impeller. The fume in the wind cabinet is affected by centrifugal force, and the oil mist condenses into oil droplets, which are collected in the oil cup through the oil path. The purified fume is finally discharged along a fixed passage.

[0003] However, due to long-term use, a large amount of oil and dirt will be deposited on the surface of the filter and impeller. As the amount of attachment on the filter becomes more saturated, the adsorption capacity of the oil mist will gradually decrease, and the filter must be removed and cleaned regularly. As the filter's oil filtering capacity decreases, the weight of the impeller increases, the motor load increases accordingly, and the heat generated during the operation of the motor increases, the load of increased losses continues to increase, and the noise is greater. A large amount of oil and dirt will also oxidize to form acidic substances, which are easy to corrode the range hood, causing the range hood to rust, accelerating the aging of the range hood, and shortening its service life. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a range hood, which can not only quickly promote the separation of oil smoke, but also has a good oil smoke separation effect and does not require the oil smoke filter to be disassembled and cleaned.

[0005] The technical solution adopted by the present invention to solve the technical problem is as follows:

[0006] Provided is an oil fume extractor, comprising a smoke collecting hood and a fan hood which are interconnected. The smoke collecting hood is provided with a receiving cavity, and a hollow oil fume passage box is fitted into the receiving cavity in a matching manner. An air inlet is provided between one side of the receiving cavity and the oil fume passage box. A guiding hole communicating with the air inlet through a pipeline is provided on one side of the oil fume passage box, and an air outlet communicating with the fan hood is provided on the other side. A receiving groove for placing a cleaning liquid is provided at the bottom of the oil fume passage box. Further included is a storage basket placed in the receiving groove. Ceramic or metal particles are placed in the storage basket. A sliding track which is in up-and-down sliding fit with a sliding groove on the storage basket is provided on the inner wall of the oil fume passage box. A driving member for controlling the lifting of the storage basket along the sliding track is provided at the top of the oil fume passage box. When the machine is started, the storage basket is pulled up by the driving member, and the ceramic or metal particles in the storage basket cover the guiding hole and the air outlet to form a barrier for intercepting oil fume. Under the action of negative pressure, the oil fume passes through the gaps between the ceramic or metal particles, and the oil molecules are attached to the surface thereof, realizing oil fume separation. When the machine is shut down, the storage basket is pushed down along the sliding track by the driving member into the receiving groove and is soaked by the cleaning liquid.

[0007] The present invention also provides a method for quickly separating oil fume by using the oil fume extractor, comprising the following steps:

[0008] a. Start the machine. The circuit control system of the oil fume extractor starts the fan and the driving member. At this time, the impeller rotates, and the driving member slowly lifts the storage basket along the sliding track, forming a negative pressure area at the air inlet and the bottom of the oil fume passage box;

[0009] b. The oil fume rising from the pot first touches the bottom of the oil fume passage box. Since the temperature at the bottom of the oil fume passage box is lower than the temperature of the oil fume, some oil molecules with a larger specific gravity adhere to the surface of the bottom of the oil fume passage box when encountering cold, and some other oil fume is inhaled into the air inlet and passes through the guiding hole into the oil fume passage box through the pipeline;

[0010] c. Due to the negative pressure environment in the oil fume passage box, the oil fume is urged to move towards the air outlet. At this time, the oil fume passes through the gaps between the ceramic or metal particles. Since the temperature of the ceramic or metal particles is lower than the temperature of the oil fume, the oil molecules adhere to the surface thereof when encountering cold, and the smoke or some escaped oil molecules enter the air duct in the fan hood through the air outlet and are then purified by the impeller and discharged;

[0011] d. Shut down the machine. The fan stops, and the storage basket is pushed down along the sliding track by the driving member and enters the receiving groove. At this time, the ceramic or metal particles are soaked by the cleaning liquid.

[0012] Due to the adoption of the above technical solution, during operation, the driving member slowly lifts the storage basket along the sliding track, and the negative pressure generated by the blower forms a negative pressure area at the air inlet and the bottom of the oil fume passage box; the oil fume rising from the pot first touches the bottom of the oil fume passage box. Since the temperature at the bottom of the oil fume passage box is lower than the temperature of the oil fume, some oil molecules with a relatively large specific gravity adhere to the surface of the bottom of the oil fume passage box when cooled, and some other oil fumes are sucked into the air inlet, pass through the pipeline and through the air guiding holes, and enter the oil fume passage box; due to the negative pressure environment in the oil fume passage box, the oil fume is promoted to move towards the air outlet holes. At this time, the oil fume passes through the gaps between the ceramic or metal particles. Since the temperature of the ceramic or metal particles is lower than the temperature of the oil fume, the oil molecules adhere to their surfaces when cooled, and the smoke or some escaped oil molecules enter the air duct in the blower cover and are then purified by the wind wheel and discharged; when shutting down, the blower stops, and the storage basket is pushed down along the sliding track by the driving member and enters the accommodating groove. At this time, the ceramic or metal particles are soaked in the cleaning liquid. Each time after shutting down, the ceramic or metal particles are soaked in the cleaning liquid, which can achieve real-time cleaning of the ceramic or metal particles, and there is no need to replace the ceramic or metal particles.

[0013] In order to better achieve the invention purpose, the present invention also has the following more excellent technical solutions:

[0014] In some embodiments, in order to facilitate the replacement of the cleaning liquid, a water pump for injecting or extracting the cleaning liquid is also designed.

[0015] In some embodiments, according to factors such as the design requirements and costs of different manufacturers, the driving member can be a pneumatic push rod, a hydraulic push rod, or an electric push rod.

[0016] In some embodiments, in order to facilitate the wiping of oil stains, the bottom of the oil fume passage box can be a flat bottom. In order to increase the contact area of the oil fume, the bottom of the oil fume passage box can also be set as a conical bottom or a multi-particle protrusion.

[0017] In some embodiments, in order to enable the oil fume to better pass through the gaps between the ceramic or metal particles and make the oil fume separation more effective, the diameter of the ceramic or metal particles is required to be not less than 0.5 cm.

[0018] In some embodiments, in order to facilitate the observation of the cleanliness of the cleaning liquid, an observation window for observing the cleaning liquid is opened on the oil fume passage box.

[0019] In some embodiments, in order to make the hot oil fume better adhere when cooled, a sandwich layer for placing the coolant is provided at the bottom of the accommodating groove of the oil fume passage box. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of a range hood for promoting rapid separation of oil fume according to an embodiment provided by the present invention;

[0021] Figure 2 A schematic diagram of the structure of a range hood from another perspective to promote rapid separation of oil smoke;

[0022] Figure 3 A schematic diagram of the internal structure of a range hood for promoting rapid separation of oil smoke;

[0023] Figure 4 Schematic diagram of the exploded structure of the oil fume channel box on the range hood to promote the rapid separation of oil fume;

[0024] Reference numerals:

[0025] 1. Smoke hood; 10. Accommodation chamber; 11. Air inlet; 2. Fan cover; 3. Oil fume channel box; 30. Pipe; 31. Air guide hole; 32. Air outlet; 33. Accommodation slot; 34. Slide track; 35. Interlayer; 4. Storage basket; 41. Particles; 42. Slide slot; 5. Electric push rod; 6. Volute; 7. Wind wheel. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with embodiments.

[0027] refer to Figures 1 to 4 As shown, the present invention provides a range hood, comprising a fume hood 1 and a fan hood 2 which are interconnected, wherein a fan is arranged in the fan hood 2, and the fan comprises: a volute 6, a fan wheel 7, and a motor for driving the fan wheel 7 to rotate. A accommodating chamber 10 is provided on the fume hood 1, and a hollow fume channel box 3 is matched and embedded in the accommodating chamber 10, an air inlet 11 is arranged between one side of the accommodating chamber 10 and the fume channel box 3, an air guide hole 31 which is connected to the air inlet 11 via a pipe 30 is provided on one side of the fume channel box 3, and an air outlet 32 which is connected to the fan hood 2 is provided on the other side, a accommodating groove 33 for placing cleaning liquid is provided at the bottom of the fume channel box 3, and a storage basket 4 which is placed in the accommodating groove 33 is also included, and ceramic or metal particles 41 are placed in the storage basket 4, and a sliding track 3 which is matched with the sliding groove 42 on the storage basket 4 and slides up and down is provided on the inner wall of the fume channel box 3. 4. A pneumatic push rod, a hydraulic push rod, or an electric push rod 5 is arranged on the top of the oil fume passage box 3 to control the lifting of the storage basket 4 along the slide track 34. When the machine is turned on, the storage basket 4 is pulled up by the pneumatic push rod, the hydraulic push rod, or the electric push rod 5, and the ceramic or metal particles 41 in the storage basket 4 cover the air guide hole 31 and the air outlet hole 32 to form a barrier to intercept the oil fume. Under the action of negative pressure, the oil fume passes through the gaps between the ceramic or metal particles 41, and the oil molecules are attached to the surface of the ceramic or metal particles 41 to achieve oil fume separation; when the machine is turned off, the storage basket 4 is pushed down by the pneumatic push rod, the hydraulic push rod, or the electric push rod 5 along the slide track 34 into the receiving groove 33 and is soaked by the cleaning liquid in the receiving groove 33.

[0028] For the convenience of replacing the cleaning liquid, a water pump for injecting or pumping out the cleaning liquid is also designed. In some embodiments, for the convenience of observing the cleanliness of the cleaning liquid, an observation window for observing the cleaning liquid is provided on the oil fume passage box 3. In some embodiments, to make the hot oil fume better adhere when cooled, an interlayer 35 for placing the coolant is provided at the bottom of the accommodating groove 33 of the oil fume passage box 3. In order to enable the oil fume to better pass through the gaps between the ceramic or metal particles 41 and make the oil fume separation more effective, the diameter of the ceramic or metal particles 41 is required to be not less than 0.5 cm, and 0.8 cm is optimal. The bottom of the oil fume passage box 3 can be designed as a flat bottom, or a conical bottom or a multi-particle 41 protrusion can be designed.

[0029] The working principle of the present invention is as follows: First, power on the machine. The circuit control system of the range hood starts the fan and the driving member. Among them, the motor, the pneumatic push rod, the hydraulic push rod or the electric push rod 5 is electrically connected to the circuit control system and is controlled by it. At this time, the wind wheel 7 rotates, and the driving member slowly lifts the storage basket 4 along the sliding track 34, forming a negative pressure area at the air inlet 11 and the bottom of the oil fume passage box 3. Then, the oil fume rising from the pot first touches the bottom of the oil fume passage box 3. Since the temperature at the bottom of the oil fume passage box 3 is lower than the temperature of the oil fume, some oil molecules with a larger specific gravity adhere to the surface of the bottom of the oil fume passage box 3 when encountering cold, and some other oil fumes are inhaled into the air inlet 11, pass through the pipeline 30 and the air guide holes 31, and enter the oil fume passage box 3. Due to the negative pressure environment in the oil fume passage box 3, the oil fume is promoted to move towards the air outlet hole 32. At this time, the oil fume passes through the gaps between the ceramic or metal particles 41. Since the temperature of the ceramic or metal particles 41 is lower than the temperature of the oil fume, the oil molecules adhere to their surfaces when encountering cold, and the smoke or some escaped oil molecules enter the air duct in the fan cover 2 through the air outlet hole 32 and are then purified by the wind wheel 7 and discharged. When powering off, the fan stops, and the storage basket 4 is pushed down by the driving member along the sliding track 34 and enters the receiving groove 33. At this time, the ceramic or metal particles 41 are soaked in the cleaning liquid. Due to the adoption of the above technical solution, when working, the driving member slowly lifts the storage basket 4 along the sliding track 34, and the negative pressure generated by the fan forms a negative pressure area at the air inlet 11 and the bottom of the oil fume passage box 3. The oil fume rising from the pot first touches the bottom of the oil fume passage box 3. Since the temperature at the bottom of the oil fume passage box 3 is lower than the temperature of the oil fume, some oil molecules with a larger specific gravity adhere to the surface of the bottom of the oil fume passage box 3 when encountering cold, and some other oil fumes are inhaled into the air inlet 11, pass through the pipeline 30 and the air guide holes 31, and enter the oil fume passage box 3. Due to the negative pressure environment in the oil fume passage box 3, the oil fume is promoted to move towards the air outlet hole 32. At this time, the oil fume passes through the gaps between the ceramic or metal particles 41. Since the temperature of the ceramic or metal particles 41 is lower than the temperature of the oil fume, the oil molecules adhere to their surfaces when encountering cold, and the smoke or some escaped oil molecules enter the air duct in the fan cover 2 through the air outlet hole 32 and are then purified by the wind wheel 7 and discharged. When powering off, the fan stops, and the storage basket 4 is pushed down by the driving member along the sliding track 34 and enters the receiving groove 33. At this time, the ceramic or metal particles 41 are soaked in the cleaning liquid. Each time after powering off, the ceramic or metal particles 41 are soaked in the cleaning liquid, which can achieve real-time cleaning of the ceramic or metal particles 41, and there is no need to replace the ceramic or metal particles 41.

[0030] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the inventive concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. An oil fume extractor, characterized in that: It includes a smoke collecting hood and a fan hood that are interconnected. An accommodation cavity is provided on the smoke collecting hood, and a hollow oil fume passage box is fitted into the accommodation cavity in a matching manner. An air inlet is provided between one side of the accommodation cavity and the oil fume passage box. A wind guiding hole communicated with the air inlet through a pipeline is provided on one side of the oil fume passage box, and an air outlet hole communicated with the fan hood is provided on the other side. An accommodation groove for placing a cleaning liquid is provided at the bottom of the oil fume passage box. A storage basket placed in the accommodation groove is also included. Ceramic or metal particles are placed in the storage basket. A sliding track that is in sliding fit with the sliding groove on the storage basket is provided on the inner wall of the oil fume passage box. A driving member for controlling the lifting and lowering of the storage basket along the sliding track is provided at the top of the oil fume passage box. When the machine is turned on, the storage basket is pulled up by the driving member, and the ceramic or metal particles in the storage basket cover the wind guiding hole and the air outlet hole to form a barrier for intercepting oil fume. Under the action of negative pressure, the oil fume passes through the gaps between the ceramic or metal particles, and the oil molecules are attached to the surface thereof, realizing oil fume separation. When the machine is turned off, the storage basket is pushed down along the sliding track by the driving member into the accommodation groove and is soaked in the cleaning liquid.

2. The range hood according to claim 1, characterized in that: A water pump for injecting or extracting the cleaning liquid is also included.

3. The range hood according to claim 1, wherein: The driving member is a pneumatic push rod, a hydraulic push rod, or an electric push rod.

4. The range hood according to claim 1, wherein: The bottom of the oil fume passage box is a flat bottom or a conical bottom.

5. The range hood according to claim 1, characterized in that: The diameter of the ceramic or metal particles is not less than 0.5 cm.

6. The range hood according to claim 1, characterized in that: An observation window for observing the cleaning liquid is provided on the oil fume passage box.

7. The range hood according to claim 1, characterized in that: A sandwich layer for placing a refrigerant is provided at the bottom of the accommodation groove of the oil fume passage box.

8. A range hood according to any one of the above claims, and a method for quickly separating oil fume, characterized in that: This method includes the following steps: a. Turn on the machine. The circuit control system of the range hood starts the fan and the driving member. At this time, the impeller rotates, and the driving member slowly lifts the storage basket along the sliding track, forming a negative pressure area at the air inlet and the bottom of the oil fume passage box. b. The oil fume rising from the pot first touches the bottom of the oil fume passage box. Since the temperature at the bottom of the oil fume passage box is lower than the temperature of the oil fume, some oil molecules with a larger specific gravity adhere to the surface of the bottom of the oil fume passage box when they are cooled, and some other oil fume is sucked into the air inlet, passes through the pipeline, and enters the oil fume passage box through the wind guiding hole. c. Due to the negative pressure environment in the oil fume passage box, the oil fume moves towards the air outlet hole. At this time, the oil fume passes through the gaps between the ceramic or metal particles. Since the temperature of the ceramic or metal particles is lower than the temperature of the oil fume, the oil molecules adhere to the surface thereof when they are cooled, and the smoke or some escaped oil molecules enter the air duct in the fan hood through the air outlet hole and are then discharged after being purified by the impeller. d. Turn off the machine. The fan stops, and the storage basket is pushed down along the sliding track by the driving member and enters the accommodation groove. At this time, the ceramic or metal particles are soaked in the cleaning liquid.

Images