CN111578332B

CN111578332B - Range hood's fan system convenient to it is clean

Info

Publication number: CN111578332B
Application number: CN201910121686.2A
Authority: CN
Inventors: 吴波达
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2019-02-17
Filing date: 2019-02-17
Publication date: 2021-07-23
Anticipated expiration: 2039-02-17
Also published as: CN111578332A

Abstract

The invention relates to a fan system of a range hood convenient to clean, which comprises an impeller provided with a front ring, a rear disk and blades, wherein the front ring and the rear disk are arranged at intervals, the blades are connected between the front ring and the rear disk along the axial direction, two ends of each blade can be respectively and rotatably arranged on the front ring and the rear disk, the fan system also comprises an adjusting mechanism capable of driving the blades to rotate or not and a cleaning mechanism capable of spraying a cleaning medium onto the impeller, the adjusting mechanism is arranged on the impeller, and the cleaning mechanism is arranged on the outer side of the impeller. The two ends of the blade are respectively and rotatably arranged on the front ring and the rear disc, and the adjusting mechanism capable of driving the blade to rotate or not and the cleaning mechanism capable of spraying a washing medium onto the impeller are arranged, so that when the range hood is cleaned, the angle of the blade can be continuously adjusted through the adjusting mechanism, all parts of the blade can be in contact with the cleaning medium, the cleaning dead angle on the blade is eliminated, and the cleaning effect of the blade is improved; under the non-clean state, the blade can be adjusted to a required angle through the adjusting mechanism to be normally used.

Description

Range hood's fan system convenient to it is clean

Technical Field

The invention relates to a fan system of a range hood convenient to clean.

Background

The range hood is a household appliance for pumping away oil smoke generated by cooking on a cooking bench, but for most range hoods, a big problem lies in that: the volatile oil smoke can take place the condensation in range hood's inside, and oil can form thick and difficult abluent greasy dirt in the organism after mixing with impurity such as dust, granule, and after the greasy dirt accumulation reached the certain degree, can form the solid layer of compactness in range hood's inside, further increaseed the clean degree of difficulty.

The prior range hoods are generally required to be disassembled for cleaning, and some range hoods in the prior art have a self-cleaning function, for example, the range hoods in chinese patent application No. CN201280039582.3 with publication No. CN103732994B and the range hoods in chinese patent application No. CN200780027956.9 with publication No. CN101495814B have a self-cleaning function, and these range hoods are provided with cleaning agent containers, pumps, spray nozzles and other parts inside the device for spraying the cleaning agent on the blades, the flow channels, the filter screen and other parts and removing the residual liquid after cleaning.

The cleaning structure mainly comprises a fan impeller and a volute inner wall of the range hood, wherein in the cleaning structure, only one side of each blade is easy to clean due to the arrangement mode of the blades of the fan impeller, and the other side of each blade is generally a cleaning dead angle, so that the cleaning effect of the impeller is influenced.

Disclosure of Invention

The invention aims to solve the technical problem of the prior art and provides a fan system of a range hood, which eliminates the cleaning dead angle and improves the cleaning effect by rotating an impeller blade and is convenient to clean.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a fan system convenient to clear range hood, is including having the impeller of preceding circle, back plate and blade, interval arrangement around preceding circle and the back plate, the blade is a plurality of and along axial connection between preceding circle and back plate, its characterized in that: the two ends of the blade are respectively arranged on the front ring and the rear disc in a rotatable manner, the cleaning device also comprises an adjusting mechanism which can drive the blade to rotate or not and a cleaning mechanism which can spray a cleaning medium onto the impeller, the adjusting mechanism is arranged on the impeller, and the cleaning mechanism is arranged on the outer side of the impeller.

In the above scheme, adjustment mechanism includes clamping ring and connecting rod, separate for two semicircular regions independent relatively along circumference on the impeller, all be provided with a plurality of blades in each semicircular region, the clamping ring shaping is the semicircle form corresponding with the semicircular region, it has the through-hole that corresponds each other to open on each blade in the semicircular region, the through-hole that the clamping ring passed on each blade in proper order arranges, the first end of connecting rod is connected with the first end of clamping ring, the second end of connecting rod is connected with the second end of clamping ring, just the connecting rod can be located the impeller along its length direction round trip movement ground, is provided with on the clamping ring between two adjacent blades and can drives blade pivoted spacing portion under the clamping ring moving state. By adopting the structure, when the driving connecting rod moves to one end along the length direction, the blades can be driven to rotate to one direction by the connecting ring, and when the driving connecting rod moves to the other end along the length direction, the blades can be driven to rotate to the other direction by the connecting ring, so that the cleaning medium can be separated from different sides of the blades, the cleaning dead angle of the blades can be eliminated, and the cleaning effect can be improved.

Preferably, adjustment mechanism still includes first spacing post, the spacing post of second, first spacing post is connected between preceding circle and back plate and is supported in the inboard of the first end of connecting collar and the first end junction of connecting rod, the spacing post of second is connected between preceding circle and back plate and is supported in the inboard of the second end of connecting collar and the second end junction of connecting rod. The structure is arranged, so that support can be provided for the back-and-forth movement of the connecting rod and the movement of the connecting ring, and abrasion to the blades is avoided.

Preferably, the first limiting column and the second limiting column are two groups and are respectively arranged corresponding to a semicircular area.

Preferably, the front ring is provided with a driving structure which can simultaneously drive the blades in the two semicircular areas to rotate, and the driving structure is connected with the connecting rod.

Preferably, the driving structure comprises a mounting seat, a gear, a first rack, a second rack and a motor, wherein the mounting seat is arranged on the front ring, the gear can be rotatably arranged in the mounting seat, the first rack can be arranged in the mounting seat along the length direction of the connecting rod in one semicircular region in a reciprocating manner and is connected with the connecting rod, the second rack can be arranged in the mounting seat along the length direction of the connecting rod in the other semicircular region in a reciprocating manner and is connected with the connecting rod, and the motor is arranged on the mounting seat and has an output end connected with the gear. The structure can drive all the blades in two semicircular areas simultaneously, the rotating directions of all the blades are consistent, and when the blades are not required to be cleaned, the arrangement mode of all the blades is ensured to meet the requirement, and the blades are ensured to have a better air suction effect.

For the convenience of assembly, it has the installation cavity that link up along the length direction of connecting rod to open on the mount pad, be equipped with on the first side wall of this installation cavity with first rack direction complex first spout, be equipped with on the second side wall of installation cavity with second rack direction complex second spout.

In each of the above schemes, the fan system further includes a volute, the impeller is rotatably disposed in the volute, the cleaning mechanism is disposed on an outer wall of the volute, and the volute is provided with an opening through which a cleaning medium is input into the volute.

Preferably, the opening is arranged close to the volute tongue of the volute and extends in the axial direction of the impeller, and the cleaning mechanism is provided with a washing medium inlet and a nozzle capable of corresponding to the opening. The cleaning medium is input from the vicinity of the volute tongue, so that the influence on the air quantity of the fan can be reduced to the maximum extent, and the cleaning effect is improved by contacting the impeller blade at a short distance.

Compared with the prior art, the invention has the advantages that: the two ends of the blade are respectively and rotatably arranged on the front ring and the rear disc, and the adjusting mechanism capable of driving the blade to rotate or not and the cleaning mechanism capable of spraying a washing medium onto the impeller are arranged; under the non-clean state, the blade can be adjusted to a required angle through the adjusting mechanism to be normally used.

Drawings

FIG. 1 is a schematic structural diagram (hidden volute structure) according to an embodiment of the present invention;

FIG. 2 is a partially exploded view of FIG. 1;

FIG. 3 is a schematic structural diagram of an impeller and an adjusting mechanism according to an embodiment of the present invention;

FIG. 4 is an exploded view of FIG. 3;

fig. 5 is a partial cross-sectional view of an adjustment mechanism in an embodiment of the invention.

Detailed Description

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

As shown in fig. 1 to 5, the fan system of the range hood convenient to clean in this embodiment includes an impeller 1, a volute 2, an adjusting mechanism 3 and a cleaning mechanism 4, wherein the impeller 1 can be rotatably disposed in the volute 2. The impeller 1 is provided with a front ring 11, a rear disk 12 and a plurality of blades 13, wherein the front ring 11 and the rear disk 12 are arranged at intervals in the front-rear direction, and the blades 13 are axially connected between the front ring 11 and the rear disk 12. The blade 13 both ends of this embodiment have respectively along the grafting post of axial extension, and corresponding, it has the corresponding shaft hole with this grafting post to open respectively on preceding circle 11, the back plate 12, and grafting post and shaft hole normal running fit, blade 13 can locate on preceding circle 11, the back plate 12 through this structure with rotating. The adjusting mechanism 3 is arranged on the impeller 1 and used for driving the blades 13 to rotate or not, and the cleaning mechanism 4 is arranged outside the volute 2 and used for spraying a cleaning medium onto the impeller 13.

Specifically, the adjusting mechanism 3 includes a connecting ring 31, a connecting rod 32, a first limit column 33, a second limit column 34, and a driving structure 35, the impeller 1 is circumferentially divided into two

semi-circular regions

101 and 102 which are relatively independent, a plurality of blades 13 are respectively disposed in each

semi-circular region

101 and 102, and the blades 13 in each

semi-circular region

101 and 102 are respectively adjusted in rotation direction by a group of connecting ring 31 and connecting rod 32. The connecting ring 31 is shaped into a semicircle corresponding to the

semicircular areas

101 and 102, through holes 131 corresponding to each other are formed in each blade 13 in the

semicircular areas

101 and 102, the connecting ring 31 sequentially penetrates through the through holes 131 in each blade 13 to be arranged, the first end of the connecting rod 32 is connected with the first end of the connecting ring 31, the second end of the connecting rod 32 is connected with the second end of the connecting ring 31, the connecting rod 32 can be arranged on the impeller 1 along the length direction in a reciprocating manner, a limiting part 311 capable of driving the blades 13 to rotate under the moving state of the connecting ring 31 is arranged on the connecting ring 31 between every two adjacent blades 13, and the limiting part 311 is shaped into a sphere to reduce the friction on the blades 13. When the driving connecting rod 32 moves towards one end along the length direction, each blade 13 can be driven to rotate towards one direction through the connecting ring 31, and when the driving connecting rod 32 moves towards the other end along the length direction, each blade 13 can be driven to rotate towards the other direction through the connecting ring 31, so that cleaning media can be separated from different sides of the blades 13, cleaning dead angles of the blades can be eliminated, and the cleaning effect is improved.

The first position-limiting column 33 is connected between the front ring 11 and the rear disc 12 and supported at the inner side of the joint of the first end of the connecting ring 31 and the first end of the connecting rod 32, and the second position-limiting column 34 is connected between the front ring 11 and the rear disc 12 and supported at the inner side of the joint of the second end of the connecting ring 31 and the second end of the connecting rod 32. The first and second position-

limiting columns

33 and 34 are two groups and are respectively arranged corresponding to a semicircular area. With this structure, support is provided for the back and forth movement of the connecting rod 32 and the movement of the connecting ring 31, thereby preventing abrasion of the vane 13.

The driving structure 35 in this embodiment is a single structure, and can simultaneously drive the blades 13 in the two

semicircular areas

101 and 102 to rotate, and the driving structure 35 is connected with the connecting rod 32. Specifically, the driving structure 35 includes a mounting seat 351, a gear 352, a first rack 353, a second rack 354 and a motor 355, the mounting seat 351 is disposed on the front ring 11 through a connecting arm 3513, the gear 352 is rotatably disposed in the mounting seat 351, the first rack 353 is disposed in the mounting seat 351 and connected to the connecting rod 32 so as to be capable of moving back and forth along the length direction of the connecting rod 32 in one semicircular region 101, the second rack 354 is disposed in the mounting seat 351 and connected to the connecting rod 32 so as to be capable of moving back and forth along the length direction of the connecting rod 32 in the other semicircular region 102, and the motor 355 is disposed on the mounting seat 351 and has an output end connected to the gear 352. This structure can realize the simultaneous drive to all blades 13 in the two semicircle regions, and makes all blades 13's direction of rotation unanimous, when need not to clean blade 13, guarantees that each blade 13's the mode of arranging meets the requirements, ensures that it has better effect of induced drafting. For convenience of assembly, the mounting seat 351 is provided with a mounting cavity 3510 penetrating along the length direction of the connecting rod 32, a first sliding groove 3511 in guiding fit with the first rack 353 is arranged on a first side wall of the mounting cavity 3510, and a second sliding groove 3512 in guiding fit with the second rack 354 is arranged on a second side wall of the mounting cavity 3510.

The cleaning mechanism 4 of the embodiment is arranged on the outer wall of the volute 2, and the volute 2 is provided with an opening 21 for inputting cleaning media into the volute 2. The opening 21 is arranged close to the volute tongue 22 of the volute 2 and extends in the axial direction of the impeller 1, and the cleaning mechanism 4 has a washing medium inlet 41 and a nozzle opening 42 which can correspond to the opening 21. The cleaning medium is input from the vicinity of the volute tongue 22, so that the influence on the air quantity of the fan can be reduced to the maximum extent, and the cleaning effect is improved by contacting the impeller blades 13 at a short distance.

When the range hood is cleaned, the angle of the blade 13 can be continuously adjusted through the adjusting structure 3, so that all parts of the blade 13 can be contacted with a cleaning medium, the cleaning dead angle on the blade 13 is eliminated, and the cleaning effect of the blade 13 is improved; under the non-clean state, the blade can be normally used by adjusting the blade to a required angle through the adjusting mechanism 3.

The fan system of the embodiment may adopt an automatic cleaning manner, when the impeller 1 is greasy, the resistance to rotation of the blade 13 increases, the resistance to rotation of the blade 13 driven by the motor 355 increases, the current flowing through the motor 355 depends on I ═ E-U)/X, E denotes the power supply potential, U denotes the motor winding induced-rise potential, and X denotes the resistance of the motor winding, therefore when the rotation resistance increases, the torque of the motor 355 increases, the rotor speed decreases, the rotor magnetic field decreases, the motor winding induced-rise potential decreases, and then the current of the motor 355 increases; the oil contamination on the impeller 1 can be judged by the current of the motor 355.

The degree of cleanliness of the impeller 1 is classified into three levels corresponding to the current of the motor 355, respectively. When the motor 355 has the maximum current I<I₀Indicating that the impeller 1 is lightly contaminated; when the motor 355 has the maximum current I₀<I<I₁Indicating that the impeller 1 is lightly contaminated; when the motor 355 has the maximum current I₁<I<I₂Indicating that the impeller 1 is in a moderate contamination condition; when the motor 355 has the maximum current I>I₂Indicating that the impeller 1 is heavily contaminated.

The working mode of the cleaning mechanism 4 is as follows:

(1) presetting self-checking time T (which can be manually adjusted) of a blade 13 cleaning program, and judging the condition of oil stain on the impeller 1 by rotating the blade 13 on the impeller 1 in a positive and negative manner every T time;

(2) after the self-test is completed, the maximum current I of the motor 355 is judged_maxWhether or not less than I₀If yes, the impeller 1 does not need to be cleaned, and the self-checking time of the impeller 1 is prolonged to 1.2 times of the original time;

(3) if the motor 355 has the maximum current I_maxIs greater than I₀Is less than I₁Indicating that the impeller 1 is in a light pollution condition, starting the first cleaning mode, judging the power again after the cleaning is finished, and 355 maximizing the current I_maxWhether or not less than I₀If yes, finishing the cleaning; if not, starting a second cleaning mode until the maximum current I of the motor_maxWhether or not less than I₀；

(4) If the motor 355 has the maximum current I_maxIs greater than I₁Is less than I₂Indicating that the impeller 1 is in a moderate pollution condition, the second cleaning mode is started and the self-checking time of the impeller 1 is shortened to 0.8 times of the original self-checking timeAfter the cleaning is completed, the maximum current I of the motor 355 is judged again_maxWhether or not less than I₀If yes, finishing the cleaning; if not, a third cleaning mode is initiated until the motor 355 has a maximum current I_maxWhether or not less than I₀；

(5) If the motor 355 has the maximum current I_maxIs greater than I₂When the impeller 1 is in a severe pollution condition, the third cleaning mode is started, the self-checking time of the impeller 1 is shortened to 0.6 time, and after the cleaning is finished, the maximum current I of the motor 355 is judged again_maxWhether or not less than I₀If yes, finishing the cleaning; if not, the fourth cleaning mode is initiated until the motor 355 has a maximum current I_maxWhether or not less than I₀。

Claims

1. The utility model provides a fan system of range hood convenient to it is clean, includes impeller (1) that has preceding circle (11), after-disc (12) and blade (13), interval arrangement around preceding circle (11) and after-disc (12), blade (13) are a plurality of and along axial connection between preceding circle (11) and after-disc (12), its characterized in that: the two ends of the blade (13) are respectively rotatably arranged on the front ring (11) and the rear disc (12), the cleaning device also comprises an adjusting mechanism (3) which can drive the blade (13) to rotate or not and a cleaning mechanism (4) which can spray a cleaning medium onto the impeller (1), the adjusting mechanism (3) is arranged on the impeller (1), and the cleaning mechanism (4) is arranged on the outer side of the impeller (1);

adjustment mechanism (3) are including clamping ring (31) and connecting rod (32), be separated for two semicircular region (101, 102) relatively independent along circumference on impeller (1), all be provided with a plurality of blades (13) in each semicircular region (101, 102), clamping ring (31) take shape for the semicircle form corresponding with semicircular region (101, 102), it has corresponding through-hole (131) to open on each blade (13) in semicircular region (101, 102), clamping ring (31) pass through-hole (131) on each blade (13) in proper order and arrange, the first end of connecting rod (32) is connected with the first end of clamping ring (31), the second end of connecting rod (32) is connected with the second end of clamping ring (31), just connecting rod (32) can be located impeller (1) along its length direction round trip movement ground, be provided with can drive leaf (31) moving state down on clamping ring (31) between two adjacent blades (13) and can drive leaf (31) moving state A limiting part (311) for limiting the rotation of the sheet (13).

2. The easy-to-clean range hood fan system of claim 1, wherein: adjustment mechanism (3) still include first spacing post (33), second spacing post (34), first spacing post (33) are connected between preceding circle (11) and back dish (12) and are supported in the inboard of coupling ring (31) first end and the first end junction of connecting rod (32), spacing post (34) of second are connected between preceding circle (11) and back dish (12) and are supported in the inboard of coupling ring (11) second end and connecting rod (32) second end junction.

3. The easy-to-clean range hood fan system of claim 2, wherein: the first limiting columns (33) and the second limiting columns (34) are two groups and are respectively arranged corresponding to the semicircular areas (101 and 102).

4. The easy-to-clean range hood fan system of claim 1, wherein: the front ring (11) is provided with a driving structure (35) which can simultaneously drive the blades (13) in the two semicircular areas (101, 102) to rotate, and the driving structure (35) is connected with the connecting rod (32).

5. The easy-to-clean range hood fan system of claim 4, wherein: the driving structure (35) comprises a mounting seat (351), a gear (352), a first rack (353), a second rack (354) and a motor (355), the mounting seat (351) is arranged on the front ring (11), the gear (352) can be rotatably arranged in the mounting seat (351), the first rack (353) can be arranged in the mounting seat (351) in a reciprocating mode along the length direction of a connecting rod (32) of one semicircular region (101) and is connected with the connecting rod (32), the second rack (354) can be arranged in the mounting seat (351) in a reciprocating mode along the length direction of the connecting rod (32) of the other semicircular region (102) and is connected with the connecting rod (32), and the motor (355) is arranged on the mounting seat (351) and is connected with the gear (352) at the output end.

6. The easy-to-clean range hood fan system of claim 5, wherein: the mounting seat (351) is provided with a mounting cavity (3510) penetrating along the length direction of the connecting rod (32), a first sliding groove (3511) matched with the first rack (353) in a guiding mode is formed in the first side wall of the mounting cavity (3510), and a second sliding groove (3512) matched with the second rack (354) in a guiding mode is formed in the second side wall of the mounting cavity (3510).

7. The fan system of a range hood convenient to clean as claimed in any one of claims 1 to 6, wherein: the cleaning device is characterized by further comprising a volute (2), the impeller (1) can be rotatably arranged in the volute (2), the cleaning mechanism (4) is arranged on the outer wall of the volute (2), and an opening (21) for inputting cleaning media into the volute (2) is formed in the volute (2).

8. The easy-to-clean range hood fan system of claim 7, wherein: the opening (21) is arranged close to a volute tongue (22) of the volute (1) and extends along the axial direction of the impeller (1), and the cleaning mechanism (4) is provided with a washing medium inlet (41) and a nozzle (42) which can correspond to the opening (21).