A range hood for promoting rapid separation of cooking fumes and a method for separating cooking fumes

Abstract

The present invention discloses a range hood for promoting rapid separation of oil fume and a method for separating oil fume thereof; it includes a smoke collecting hood and a blower housing that are interconnected. A receiving cavity is formed in the smoke collecting hood, and a hollow oil fume passage box is fitted and installed in the receiving cavity. An air inlet is provided between one side of the receiving cavity and the oil fume passage box. A guiding air hole communicated with the air inlet through a pipeline is formed on one side of the oil fume passage box, and an air outlet communicated with the blower housing is formed on the other side. A receiving groove for placing a cleaning liquid is provided at the bottom of the oil fume passage box, and at least two groups of oil filtering nets are placed in the receiving groove. The oil filtering net is formed by hinging at least two perforated filter sheets, and the bottom end of the oil filtering net is hinged in the receiving groove. A driving member for controlling the lifting of the oil filtering net is provided at the top of the oil fume passage box. When the machine is turned on, the oil filtering net is pulled up by the driving member to intercept oil molecules blown through the guiding air hole. When the machine is turned off, the oil filtering net is pushed down by the driving member and folded in the receiving groove and soaked by 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 that promotes rapid separation of oil smoke, which can not only quickly promote the separation of oil smoke, but also has a good oil smoke separation effect and does not require disassembly and cleaning of the oil smoke filter.

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

[0006] Provided is a range hood for promoting rapid separation of lampblack, including a smoke collecting hood and a blower hood that are interconnected. A receiving cavity is formed in the smoke collecting hood, and a lampblack passage box with a hollow structure is fitted into the receiving cavity in a matching manner. An air inlet is provided between one side of the receiving cavity and the lampblack passage box. A wind guiding hole communicated with the air inlet through a pipeline is formed in one side of the lampblack passage box, and an air outlet communicated with the blower hood is formed in the other side. A receiving groove for placing a cleaning liquid is arranged at the bottom of the lampblack passage box, and at least two groups of oil filtering nets are placed in the receiving groove. The oil filtering net is formed by hinging at least two perforated filter sheets, and the bottom end of the oil filtering net is hinged in the receiving groove. A driving member for controlling the lifting of the oil filtering net is arranged at the top of the lampblack passage box. When the range hood is turned on, the oil filtering net is pulled up by the driving member to intercept oil molecules blown through the wind guiding hole. When the range hood is turned off, the oil filtering net is pushed down by the driving member and folded in the receiving groove and soaked in the cleaning liquid.

[0007] The present invention also provides a method for promoting rapid separation of lampblack by using this range hood, and the method includes the following steps:

[0008] a. Turn on the range hood. The circuit control system of the range hood starts the blower and the driving member. At this time, the impeller rotates, and the driving member slowly lifts the oil filtering net, forming a negative pressure area at the air inlet and the bottom of the lampblack passage box;

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

[0010] c. Due to the negative pressure environment in the lampblack passage box, the lampblack is urged to move towards the air outlet. At this time, the lampblack will touch the first group of oil filtering nets. Since the temperature of the oil filtering net is lower than the temperature of the lampblack, some oil molecules with a larger specific gravity adhere to the surface of the oil filtering net when encountering cold, and some other lampblack passes through the multi-perforations on the oil filtering net and is carried to the next group of oil filtering nets, and then enters the air duct in the blower hood through the air outlet and is discharged after being purified by the impeller;

[0011] d. Turn off the range hood. The blower stops, and the driving member slowly pushes down the oil filtering net and folds it in the receiving groove. At this time, the oil filtering net is soaked in the cleaning liquid.

[0012] Due to the adoption of the above technical scheme, the driving part slowly lifts the oil filter screen during operation, forming a negative pressure zone at the air inlet and the bottom of the oil fume channel box; the oil fume rising from the pot first touches the bottom of the oil fume channel box, and since the temperature at the bottom of the oil fume channel box is lower than the temperature of the oil fume, some oil molecules with a larger specific gravity are cooled and attached to the bottom surface of the oil fume channel box, and other oil fume is sucked into the air inlet and passes through the air guide holes through the pipeline into the oil fume channel box; since the negative pressure environment in the oil fume channel box prompts the oil fume to move toward the air outlet, the oil fume will touch the first group of oil filters at that time, and since the temperature of the oil filter screen is lower than the temperature of the oil fume, some oil molecules with a larger specific gravity are cooled and attached to the surface of the oil filter screen, and other oil fume is carried to the next group of oil filters through the multiple holes on the oil filter screen, and then enters the air duct in the fan cover through the air outlet and is discharged after being purified by the wind wheel; shut down, the fan stops, the driving part slowly pushes the oil filter screen down and folds it in the receiving tank, and the oil filter screen is soaked in the cleaning liquid at that time. Each time the machine is turned off, the oil filter is soaked in cleaning liquid, which can clean the oil filter in real time without disassembling it. The interception of multiple sets of oil filters makes the oil fume separation and purification effect better.

[0013] In order to better achieve the purpose of the invention, the present invention also has the following better 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 implementations, the driving member may be a pneumatic push rod, a hydraulic push rod, or an electric push rod, depending on the design requirements and cost of different manufacturers.

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

[0017] In some embodiments, in order to better capture the escaping oil smoke of the previous group and make the oil smoke separation more effective, multiple groups of oil filters are arranged in sequence.

[0018] In some embodiments, in order to save space and fully soak the cleaning liquid, the oil filter is preferably provided with multiple filter discs hingedly connected. The number of holes on each filter disc can be 5-10, or even more, and the filter disc is preferably made of stainless steel or aluminum.

[0019] In some embodiments, in order to make the hot oil smoke adhere better when it encounters cooling, an interlayer for placing a freezing liquid is provided at the bottom of the receiving tank of the oil smoke channel box.

[0020] In some embodiments, in order to better intercept the oil smoke, the oil filter is placed vertically to intercept the oil molecules blowing through the air guide hole horizontally. Of course, the oil filter can be placed vertically or staggered at intervals. Brief Description of the Drawings

[0021] Figure 1 FIG. 1 is a schematic structural view of a range hood for promoting rapid separation of oil fumes according to an embodiment provided by the present invention;

[0022] Figure 2 FIG. 2 is a schematic structural view of another perspective of the range hood for promoting rapid separation of oil fumes;

[0023] Figure 3 FIG. 3 is a schematic internal structural view of the range hood for promoting rapid separation of oil fumes;

[0024] Figure 4 FIG. 4 is a schematic exploded structural view of an oil fume passage box on the range hood for promoting rapid separation of oil fumes;

[0025] Reference Numerals:

[0026] 1. Smoke collecting hood; 10. Accommodating cavity; 11. Air inlet; 2. Fan housing; 3. Oil fume passage box; 30. Pipe; 31. Air guiding hole; 32. Air outlet hole; 33. Accommodating groove; 34. Interlayer; 4. Oil filtering net; 5. Electric push rod; 6. Volute; 7. Impeller. Detailed Embodiment

[0027] The present invention will be further described in detail below with reference to the embodiments.

[0028] Referring to Figures 1 to 4 as shown, the present invention provides a range hood for promoting rapid separation of oil fumes, including a smoke collecting hood 1 and a fan housing 2 that are interconnected. An accommodating cavity 10 is provided on the smoke collecting hood 1. The hollow oil fume passage box 3 is fitted into the accommodating cavity 10 in a matching manner. An air inlet 11 is provided between one side of the accommodating cavity 10 and the oil fume passage box 3. An air guiding hole 31 communicating with the air inlet 11 through a pipe 30 is provided on one side of the oil fume passage box 3, and an air outlet hole 32 communicating with the fan housing 2 is provided on the other side. An accommodating groove 33 for placing a cleaning liquid is provided at the bottom of the oil fume passage box 3. The bottom of the oil fume passage box 3 can be designed as a flat bottom, a conical bottom or a multi-particle protrusion. 3 or 4 groups of oil filtering nets 4 are sequentially placed in the accommodating groove 33. Each group of oil filtering nets 4 is placed longitudinally for horizontally intercepting oil molecules blown through the air guiding hole 31. The oil filtering net 4 is formed by hinging 3 or 4 filter sheets. A plurality of oil fume passing holes are provided on each filter sheet. The filter sheet is preferably made of stainless steel or aluminum.

[0029] The bottom end of the oil filter net 4 is hinged in the accommodating groove 33. At the top of the oil fume passage box 3, a pneumatic push rod or a hydraulic push rod or an electric push rod 5 for controlling the lifting of the oil filter net 4 is provided. When the machine is turned on, the oil filter net 4 is pulled up by the pneumatic push rod or the hydraulic push rod or the electric push rod 5 to intercept the oil molecules blown through the air guiding holes 31. When the machine is turned off, the oil filter net 4 is pushed down by the pneumatic push rod or the hydraulic push rod or the electric push rod 5 and folded in the accommodating groove 33 and soaked by the cleaning liquid. A water pump for injecting or extracting the cleaning liquid is also designed in the range hood.

[0030] A fan is provided inside the fan cover 2. The fan includes: a volute 6, an impeller 7, and a motor for driving the impeller 7 to rotate.

[0031] In some embodiments, an observation window for observing the amount and cleanliness of 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, a sandwich layer 34 for placing the freezing liquid is provided at the bottom of the accommodating groove 33 of the oil fume passage box 3.

[0032] Based on the method for promoting the rapid separation of oil fume provided by the present invention, the method includes the following steps: a. Turn on the machine, and the circuit control system of the range hood starts the fan and the driving member. Among them, the motor, the pneumatic push rod or the hydraulic push rod or the electric push rod 5 are electrically connected to the circuit control system and controlled by it. At this time, the impeller 7 rotates, and the driving member slowly lifts the oil filter net 4, forming a negative pressure area at the air inlet 11 and the bottom of the oil fume passage box 3; b. 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 bottom surface of the oil fume passage box 3 when cooled, and some other oil fume is sucked into the air inlet 11, passes through the pipeline 30, and enters the oil fume passage box 3 through the air guiding holes 31; c. Due to the negative pressure environment in the oil fume passage box 3, the oil fume is urged to move towards the air outlet hole 32. At this time, the oil fume will touch the first group of oil filter nets 4. Since the temperature of the oil filter net 4 is lower than the temperature of the oil fume, some oil molecules with a larger specific gravity adhere to the surface of the oil filter net 4 when cooled, and some other oil fume is brought to the next group of oil filter nets 4 through the multi-through holes on the oil filter net 4, and then enters the air duct in the fan cover 2 through the air outlet hole 32 and is discharged after being purified by the impeller 7; d. Turn off the machine, the fan stops, and the driving member slowly pushes down the oil filter net 4 and folds it in the accommodating groove 33. At this time, the oil filter net 4 is soaked by the cleaning liquid.

[0033] Due to the adoption of the above technical solution, when working, the driving member slowly lifts the oil filter net 4, forming 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 fume is sucked into the air inlet 11, passes through the pipeline 30 and the air guide holes 31, and enters the oil fume passage box 3; due to the negative pressure environment in the oil fume passage box 3, the oil fume is urged to move towards the air outlet holes 32. At this time, the oil fume will touch the first group of oil filter nets 4. Since the temperature of the oil filter nets 4 is lower than the temperature of the oil fume, some oil molecules with a larger specific gravity adhere to the surface of the oil filter nets 4 when encountering cold, and some other oil fume is brought to the next group of oil filter nets 4 through the multi-through holes on the oil filter nets 4, and then enters the air duct in the fan cover 2 through the air outlet holes 32 and is discharged after being purified by the wind wheel 7; when shutting down, the fan stops, and the driving member slowly pushes down the oil filter nets 4 and folds them in the accommodating groove 33. At this time, the oil filter nets 4 are soaked in the cleaning liquid. Each time the machine is shut down, the oil filter nets 4 are soaked in the cleaning liquid, which can achieve real-time cleaning of the oil filter nets 4 without the need to disassemble the oil filter nets 4. The interception of multiple groups of oil filter nets 4 makes the oil fume separation and purification effect better.

[0034] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the creative 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 suction machine for promoting rapid oil fume separation, characterized in that: Comprising a smoke collecting hood and a fan hood that are interconnected. An accommodation cavity is provided on the smoke collecting hood, and a hollow-structured oil fume passage box is fitted and installed in 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 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. An accommodation groove for placing a cleaning liquid is provided at the bottom of the oil fume passage box. At least two groups of oil filtering nets are placed in the accommodation groove. The oil filtering net is formed by hinging at least two perforated filter sheets. The bottom end of the oil filtering net is hinged in the accommodation groove. A driving member for controlling the lifting and lowering of the oil filtering net is provided at the top of the oil fume passage box. When the machine is turned on, the oil filtering net is pulled up by the driving member to intercept the oil molecules blown through the wind guiding hole. When the machine is turned off, the oil filtering net is pushed down by the driving member and folded in the accommodation groove and soaked in the cleaning liquid.

2. The range hood for promoting rapid separation of oil fume according to claim 1, wherein: It further includes a water pump for injecting or extracting the cleaning liquid.

3. The range hood for promoting rapid separation of oil fume 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 for promoting rapid separation of oil fume 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 for promoting rapid separation of oil fume according to claim 1, characterized in that: There are 3 or 4 groups of the oil filtering nets arranged in sequence.

6. The range hood for promoting rapid separation of lampblack according to claim 1, characterized in that: The filter sheet is formed by hinging 3 or 4 sheets.

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

8. The range hood for promoting rapid separation of lampblack according to claim 1, characterized in that: The oil filtering net is placed longitudinally to intercept the oil molecules blown through the wind guiding hole horizontally.

9. A method for promoting rapid separation of cooking fumes based on the range hood described in any one of the above claims, 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 oil filtering net, 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 encountering the cold. Some other oil fume is sucked into the air inlet, passes through the pipeline and the wind guiding hole, and enters the oil fume passage box. c. Due to the negative pressure environment in the oil fume passage box, the oil fume is forced to move towards the air outlet. At this time, the oil fume will touch the first group of oil filtering nets. Since the temperature of the oil filtering net is lower than the temperature of the oil fume, some oil molecules with a larger specific gravity adhere to the surface of the oil filtering net when encountering the cold. Some other oil fume passes through the multi-perforations on the oil filtering net and is carried to the next group of oil filtering nets, and then enters the air duct in the fan hood through the air outlet and is discharged after being purified by the impeller. d. Turn off the machine. The fan stops, and the driving member slowly pushes down the oil filtering net and folds it in the accommodation groove. At this time, the oil filtering net is soaked in the cleaning liquid.

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