CN111609436A

CN111609436A - Oil smoke filter device and range hood applying same

Info

Publication number: CN111609436A
Application number: CN201910132533.8A
Authority: CN
Inventors: 王发银
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-02-22
Filing date: 2019-02-22
Publication date: 2020-09-01
Anticipated expiration: 2039-02-22
Also published as: CN111609436B

Abstract

The invention discloses an oil smoke filtering device, which comprises a filter screen, wherein the filter screen is a porous filter material, and is characterized in that: the filter screen moving mechanism further comprises a moving mechanism, and the moving mechanism comprises a driving mechanism which can drive the filter screen to move and switch between a transverse arrangement state and a longitudinal arrangement state. Also discloses a range hood applying the oil fume filtering device and a filter screen replacement prompting method of the range hood. Through making the filter screen be in the different states of arranging with the non-operating time at the during operation, can discharge at the gravity of non-operating time make full use of oil water mixture for the life of filter screen has great promotion, reduces the number of times of clean change.

Description

Oil smoke filter device and range hood applying same

Technical Field

The invention relates to an oil fume purification device, in particular to an oil fume filtering device and a range hood applying the device.

Background

At present, most of restaurants and family kitchens are provided with range hoods, and most of the traditional range hoods adopt an oil filter screen mode in the aspect of oil smoke filtration. The oil filter screen structure is generally placed on a channel for oil smoke gas circulation of the range hood, when the oil smoke gas passes through, oil smoke in the gas contacts with the filter screen, and after collision, the oil smoke is condensed into liquid oil drops to be attached to the filter screen, so that the aim of oil smoke separation is fulfilled.

A common oil filter screen, such as a self-suction type filter screen of a range hood disclosed in the chinese patent with the application number of 200710059863.6, can be adsorbed on a frame at the lower end of a smoke collection cavity, a magnetic material is inlaid in a frame of the disposable filter screen, and the frame at the lower end of the smoke collection cavity is made of an iron material; if the Chinese patent with the application number of 201420296349.X discloses a rotary grease separation filter screen for a range hood, a central hole of a filter screen disc is installed on a rotating shaft of a motor through a sleeve and a knob, the machine body is a side-suction range hood, an oil collecting tank is arranged at the bottom of the machine body, the filter screen disc is over against an outer screen plate of an air suction inlet of the machine body, a disc body of the filter screen disc is circular, filter holes are formed in the disc body, the filter holes are arranged in the circumference with different radiuses by taking the central hole of the disc body as a circle center, the disc body is formed into connected step-shaped fan blade inclined planes through stamping forming, and a.

Adopt disposable filter media, its life is shorter, and two three days generally just need to be changed, and adopt rotatory net dish, in order to reduce the amount of wind loss, this kind of filter screen structure generally needs great aperture, will reduce the effect of oil smoke separation like this to accumulate a large amount of grease on impeller and spiral case.

Disclosure of Invention

The first technical problem to be solved by the present invention is to provide an oil smoke filtering device, which can prolong the service life and improve the filtering effect.

The second technical problem to be solved by the invention is to provide a range hood with the oil smoke filtering device.

The third technical problem to be solved by the invention is to provide an oil amount monitoring and controlling method of the range hood.

The technical scheme adopted by the invention for solving the first technical problem is as follows: the utility model provides an oil smoke filter equipment, includes the filter screen, the filter screen is porous filter media, its characterized in that: the filter screen moving mechanism further comprises a moving mechanism, and the moving mechanism comprises a driving mechanism which can drive the filter screen to move and switch between a transverse arrangement state and a longitudinal arrangement state.

In order to facilitate the rotation of the driving filter screen, the motion mechanism further comprises a crank and a first sliding block connected with the filter screen, one end of the crank is connected with the output end of the driving mechanism, and the other end of the crank is connected with the first sliding block.

In order to limit the movement track of the filter screen, the movement mechanism further comprises a guide rail extending transversely, and a second sliding block connected with the filter screen, the second sliding block is arranged between the filter screen and the guide rail, the second sliding block is further connected with the guide rail in a sliding and rotating mode, and when the filter screen is in a transversely arranged state, the second sliding block is located on the front side of the first sliding block.

Preferably, the second slider and the guide rail are connected in a manner that a sliding groove extending transversely is formed in the guide rail, a pin shaft is arranged on one side of the second slider facing the guide rail, the pin shaft is transversely inserted into the sliding groove, and the pin shaft is cylindrical and forms a rotating shaft of the second slider.

Preferably, one end of the guide rail is provided with a mounting hole, and the output shaft of the driving mechanism passes through the mounting hole and is connected with one end of the crank.

In order to further enhance the cleaning of the filter screen, the filter screen cleaning device also comprises a nozzle capable of spraying high-pressure gas to the filter screen so as to clean the filter screen.

The technical scheme adopted by the invention for solving the second technical problem is as follows: the utility model provides an be applied as above fume filtration device's range hood, includes collection petticoat pipe, sets up box and the fan of setting in the box in collection petticoat pipe top, the air intake has been seted up on the collection petticoat pipe, the rear side bottom of collection petticoat pipe is provided with oil cup, its characterized in that: the filter screen sets up in the box and be located the below of fan, the shape, the size and the air intake adaptation of filter screen.

In order to facilitate monitoring of the filtering capacity of the filter screen and control replacement of the filter screen, a weighing sensor used for monitoring the oil quantity is arranged on the oil cup.

The technical scheme adopted by the invention for solving the third technical problem is as follows: a method for prompting filter screen replacement of a range hood is characterized in that: the method comprises the following steps:

1) the range hood is started for the first time, the oil quantity value a in the oil cup when the range hood is used for the first time is monitored, the oil quantity value a for the first time is recorded as Ai, and i is 1;

2) then, the range hood is started again, the numerical value of i is added with 1, the oil quantity value Ai in the oil cup when the range hood is started for use at the current time is recorded, and the recorded oil quantity value sets A1 and A2 … … Ai are summed to obtain SUM;

3) comparing the SUM obtained in the step 2) with a preset maximum value MAX of the oil quantity, judging whether the SUM is smaller than MAX, if not, entering the step 4), and if so, entering the step 5);

4) the SUM is larger than or equal to MAX, a user is prompted to replace the filter screen, the record of the oil quantity value is cleared, the filter material replacement cycle is prompted, and then if the range hood is started again, the range hood is regarded as being started for the first time, and the step 1) is entered;

5) because SUM is less than MAX, judging the relation between the oil quantity value Ai obtained by starting the machine at the current time and the last monitored oil quantity value Ai-1 at the current time, judging whether Ai is more than or equal to Ai-1, if not, entering step 6), and if yes, entering step 7);

6) since Ai is less than Ai-1, the oil quantity value Ai obtained by the current starting is less than the oil quantity value obtained by the last starting, the oil quantity value Ai obtained by the current starting is recorded, and at the moment, Ai and Ai-1 exist in the database at the same time, so that the oil cup cleaning is circulated, and the step 2 is returned;

7) and b is more than or equal to Ai-1, which indicates that the oil quantity value obtained by the current starting is more than or equal to the oil quantity value obtained by the last starting, the oil quantity value Ai obtained by the current starting is recorded, and Ai-1 is reset at the same time, so that the normal use cycle is realized, and the step 2) is returned.

Compared with the prior art, the invention has the advantages that: the filter screen is in different arrangement states during working and non-working, so that the oil-water mixture can be fully discharged during non-working by fully utilizing the gravity of the oil-water mixture, the service life of the filter screen is greatly prolonged, and the cleaning and replacing times are reduced; by arranging the nozzle, the filter screen can be further cleaned efficiently by utilizing high-pressure air, and meanwhile, the filter screen is prevented from interfering with the nozzle in a movement mode; the oil quantity of the filter screen is monitored by arranging a sensor, and the prompt of replacing the filter screen is automatically completed.

Drawings

FIG. 1 is a schematic view of a range hood according to an embodiment of the present invention;

fig. 2 is a sectional view (hiding a smoke collecting hood and an oil cup) of a range hood according to an embodiment of the present invention in a first state;

fig. 3 is a sectional view (hiding the smoke collecting hood and the oil cup) of the range hood according to the embodiment of the present invention in a second state;

FIG. 4 is a schematic view of a first state of the soot filtering device according to the embodiment of the present invention;

FIG. 5 is a schematic view of a second state of the soot filtering device according to the embodiment of the present invention;

FIG. 6 is an exploded view of the lampblack filter device according to the embodiment of the invention;

fig. 7 is a flow chart of monitoring and controlling the amount of oil in the oil cup of the range hood according to the embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

Referring to fig. 1 to 6, a range hood is a top-suction range hood, and includes a smoke collecting hood 1, a box 2 disposed above the smoke collecting hood 1, and a fan 3 (only a volute portion is shown) disposed in the box 2, the smoke collecting hood 1 is provided with an air inlet 11 communicated with the box 2, and an oil cup 8 is disposed at the bottom of the rear side of the smoke collecting hood 1.

In order to filter the oil fume flow entering from the air inlet 11 on the fume collecting hood 1, the range hood further comprises an oil fume filtering device, the oil fume filtering device comprises a filter screen 4, the filter screen 4 is arranged in the box body 2 and is positioned below the fan 3, the filter screen 4 is a porous filter material, and the periphery of the porous filter material can be coated with a frame to form the complete filter screen 4. The shape and the size of the filter screen 4 are matched with those of the air inlet 11.

In order to solve the problem of short service life of the porous filter material, the lampblack filtering device further comprises a movement mechanism for driving the filter screen 4 to act, the movement mechanism comprises a driving mechanism 51, a guide rail 52, a first sliding block 53, a second sliding block 54 and a crank 55, the driving mechanism 51 is arranged on the outer side of the box body 2 and can be a motor, an output shaft 511 of the driving mechanism extends into the box body 2, and the rest components are arranged in the box body 2. The guide rails 52 extend in the front-rear direction, preferably horizontally, and the guide rails 52 may be two symmetrically arranged or may be fixedly arranged only on the right side in the cabinet 2 as shown in the present embodiment. The guide rail 52 is provided with a slide groove 521 extending in the front-rear direction, preferably horizontally. One of the left and right sides of the filter screen 4, for example, the right side, is provided with a first slider 53 and a second slider 54, which are arranged at an interval. In the present embodiment, the first slider 53 and the second slider 54 are both disposed on the right side of the filter screen 4, the first slider 53 and the second slider 54 are respectively connected to the filter screen 4, the second slider 54 is provided with a pin 541 facing the right side of the guide rail 52, and the pin 541 is transversely inserted into the chute 521. Preferably, the pin 541 is cylindrical and can rotate in the sliding slot 521, so that the second slider 54 can slide along the extending direction of the sliding slot 521, and can rotate around the connection point with the sliding slot 521 by using the pin 541 as a rotating shaft.

The rear end of the guide rail 52 is provided with a mounting hole 522, the output shaft 511 of the driving mechanism 51 passes through the mounting hole 522 and is connected with one end of the crank 55, the other end of the crank 55 is connected with the right side of the first slider 53, and the crank 55 and the first slider 53 can be connected in a shaft connection mode. The driving mechanism 51 may be another mechanism capable of driving the crank 55 to rotate.

Therefore, when the range hood works, the filter screen 4 is in a transverse arrangement, preferably, a horizontal state, and the first sliding block 53 is located at the rear side of the second sliding block 54, so that most of grease is separated and accumulated on the filter screen 4 after oil smoke flows enter from the air inlet 11 of the smoke collecting hood 1. After the range hood is closed, the driving mechanism 51 is started to drive the crank 55 to rotate around the connection with the output shaft 511 of the driving mechanism 51, so that the end of the crank connected with the first slide block 53 rotates upwards to drive the rear side of the filter screen 4 to rotate upwards, the second slide block 54 slides backwards along the sliding groove 521 and simultaneously rotates relative to the sliding groove 521, and the front side of the filter screen 4 moves to the position behind the box body 2 and simultaneously rotates downwards until the filter screen 4 is longitudinally arranged, preferably, in a vertical state.

Alternatively, the porous filter material can be divided into a front piece and a rear piece, and the front piece and the rear piece rotate to be vertical along two shafts simultaneously, and the nozzles 6 clean the porous filter material respectively; the cleaning form and the number of the porous filter materials are not limited to the above scheme, the porous filter materials can be directly cleaned in a working position, and the porous filter materials can also be a plurality of 2-50 pieces, such as a louver window which synchronously rotates to a vertical state.

To accelerate the cleaning of the filter screen 4, the soot filter device further comprises a nozzle 6 disposed below the fan 3, the nozzle 6 being located in front of the rear end of the chute 521 and facing the rear side, so that the nozzle 6 is located in front of the filter screen 4 to clean it when the filter screen 4 is in the longitudinally arranged state. The screen 4 is rotated in the above-described manner, and interference with the nozzle 6 during rotation can be avoided.

The nozzle 6 is a two-stage pressurizing nozzle and can jet high-pressure air, and the high-pressure air can be generated by means of high pressure in the fan 3 or by independently connecting an air pump and utilizing the air pump. When the screen 4 is in the longitudinally arranged state, the nozzle 6 may inject high-pressure gas toward the screen 4, thereby rapidly cleaning the screen 4.

The number of the nozzles 6 is only one, and the reciprocating motion path air injection is carried out, such as air injection cleaning is completed by moving in the left and right directions to form an S-shaped path; or, the nozzles 6 may be arranged in a plurality at intervals left and right, and the plurality of nozzles 6 simultaneously spray air, so that one-time air spraying cleaning is completed.

Under filter screen 4 is in longitudinal arrangement's state, because porous filter media material self possesses the hydrophobic oleophobic ability of water, the oil water mixture (liquid oil and water) on it can flow down under the action of gravity after filter screen 4 erects, high-speed air can more effectual realization oil water mixture's quick removal, the oil water mixture that is blown down by high-speed gas is stained with and attaches to 2 rear sides of box and flows down, shorten oil water mixture greatly and get rid of the time and effectively promote the clearance, the life of extension porous filter media, and be favorable to concentrating and collecting waste oil.

In order to automatically remind a user to replace the filter screen 4 (during replacement, the filter screen 4 can be in a longitudinally arranged state and can be pulled downwards to be taken out through the air inlet 11), the range hood can be started to be used, the service life of the range hood is recorded by a main controller, and when the service life reaches a preset value, the service life is fed back to the main controller to remind the user to replace the filter material.

Alternatively, the range hood can also be provided with an oil quantity detection device. The total filtering amount of the filter screen 4 is judged by arranging the sensor 7 on the oil cup 8 to detect the weight of the oil accumulated in the oil cup 8, and whether the filter screen 4 needs to be replaced is judged through the total filtering amount. The sensor 7 may be a load cell.

Referring to fig. 7, the sensor 7 transmits the detected oil amount data in the oil cup 8 to the main controller of the range hood, and the main controller monitors the oil amount in the oil cup 8 so as to control the prompt of replacing the filter screen, and the method comprises the following steps:

1) the range hood is started for the first time, the sensor 7 monitors the oil quantity value a in the oil cup 8 when the range hood is used for the first time, the first oil quantity value a is recorded as Ai in a database of the main controller, and i is equal to 1;

2) then, the range hood is started again, the numerical value of i is added with 1, the oil quantity value Ai in the oil cup 8 when the range hood is started for use at the current time is monitored, and the set A1 and A2 … … Ai of the oil quantity values recorded in the database are summed to obtain the SUM;

4) because the SUM is larger than or equal to MAX, the filtering of the porous filter material exceeds the limited oil amount, the theoretical service life is reached, the user is prompted to replace the filter screen 4 at the moment, a device for automatically replacing the filter screen 4 can be arranged in the range hood, the automatic replacing device is triggered at the moment, the record of the oil amount value is emptied, the cycle is prompted to replace the filter material, and then if the range hood is started again, the range hood is considered to be started for the first time, and the step 1 is entered;

5) because SUM is less than MAX, the oil quantity filtered by the porous filter material does not exceed a limit value and does not reach the theoretical service life, and the porous filter material can be continuously used, at the moment, the relation between the oil quantity value Ai obtained by starting up at the current time and the last monitored oil quantity value Ai-1 is judged, whether Ai is more than or equal to Ai-1 is judged, if not, the step 6) is carried out, and if yes, the step 7) is carried out;

6) since Ai is less than Ai-1, the oil quantity value (current value) obtained by the current starting is smaller than the oil quantity value (previous value) obtained by the last starting, namely in the using process, a user actively cleans the oil cup 8, the oil quantity value Ai obtained by the current starting is recorded into the database, at the moment, Ai and Ai-1 exist in the database at the same time, which is an oil cup cleaning over-circulation, the normal circulation after that can iterate with Ai and returns to the step 2), and the oil quantity value poured out when the oil cup 8 is cleaned is added in summation;

7) because Ai is more than or equal to Ai-1, the oil quantity value (current value) obtained by the current startup is more than or equal to the oil quantity value (previous value) obtained by the last startup, namely the oil quantity is increased, the oil quantity value Ai obtained by the current startup is recorded into the database, and Ai-1 is reset at the same time, so that the normal use cycle is realized, the current value in the database can be repeatedly updated during the normal use, and the step 2 is returned.

Claims

1. The utility model provides an oil smoke filter equipment, includes filter screen (4), filter screen (4) are porous filter media, its characterized in that: the filter screen moving mechanism further comprises a moving mechanism, wherein the moving mechanism comprises a driving mechanism (51) which can drive the filter screen (4) to move and switch between a transverse arrangement state and a longitudinal arrangement state.

2. The oil smoke filtering device of claim 1, wherein: the motion mechanism further comprises a crank (55) and a first sliding block (53) connected with the filter screen (4), one end of the crank (55) is connected with the output end of the driving mechanism (51), and the other end of the crank (55) is connected with the first sliding block (53).

3. The oil smoke filtering device of claim 2, wherein: the movement mechanism further comprises a transversely extending guide rail (52), a second slide (54) connected to the sieve (4), the second slide (54) being arranged between the sieve (4) and the guide rail (52), the second slide (54) being further slidably and rotatably connected to the guide rail (52), the second slide (54) being located on the front side of the first slide (53) when the sieve (4) is in the transversely arranged state.

4. The oil smoke filtering device of claim 3, wherein: the guide rail (52) is provided with a sliding groove (521) which extends transversely, one side of the second sliding block (54) facing the guide rail (52) is provided with a pin shaft (541), the pin shaft (541) is transversely inserted into the sliding groove (521), and the pin shaft (541) is cylindrical and forms a rotating shaft of the second sliding block (54).

5. The oil smoke filtering device of claim 3, wherein: one end of the guide rail (52) is provided with a mounting hole (522), and an output shaft (511) of the driving mechanism (51) passes through the mounting hole (522) and is connected with one end of the crank (55).

6. The oil smoke filtering device according to any one of claims 1 to 5, wherein: and the cleaning device also comprises a nozzle (6) which can spray high-pressure gas to the filter screen (4) so as to clean.

7. A range hood applying the lampblack filtering device as claimed in any one of claims 1 to 6, comprising a lampblack collecting hood (1), a box body (2) arranged above the lampblack collecting hood (1) and a fan (3) arranged in the box body (2), wherein an air inlet (11) is formed in the lampblack collecting hood (1), and an oil cup (8) is arranged at the bottom of the rear side of the lampblack collecting hood (1), and the range hood is characterized in that: the filter screen (4) is arranged in the box body (2) and is positioned below the fan (3), and the shape and the size of the filter screen (4) are matched with the air inlet (11).

8. The range hood of claim 7, wherein: and a weighing sensor (7) for monitoring the oil amount is arranged on the oil cup (8).

9. A method for prompting filter screen replacement of a range hood as claimed in claim 7 or 8, wherein: the method comprises the following steps:

1) the range hood is started for the first time, the oil quantity value a in the oil cup (8) when the range hood is used for the first time is monitored, the oil quantity value a for the first time is recorded as Ai, and i is 1;

2) then, the range hood is started again, the numerical value of i is added with 1, the oil quantity value Ai in the oil cup (8) when the range hood is started for use at the current time is monitored, and the recorded oil quantity value sets A1 and A2 … … Ai are summed to obtain SUM;

4) the SUM is larger than or equal to MAX, a user is prompted to replace the filter screen (4), the record of the oil quantity value is emptied, the filter material replacement cycle is prompted, and then if the range hood is started again, the range hood is considered to be started for the first time, and the step 1 is entered;

7) and since Ai is more than or equal to Ai-1, the oil quantity value Ai obtained by the current starting is more than or equal to the oil quantity value obtained by the last starting, the oil quantity value Ai obtained by the current starting is recorded, and Ai-1 is reset at the same time, so that the normal use cycle is realized, and the step 2) is returned.