CN107975846A - A kind of stepless time adjustment range hood - Google Patents
A kind of stepless time adjustment range hood Download PDFInfo
- Publication number
- CN107975846A CN107975846A CN201710409926.XA CN201710409926A CN107975846A CN 107975846 A CN107975846 A CN 107975846A CN 201710409926 A CN201710409926 A CN 201710409926A CN 107975846 A CN107975846 A CN 107975846A
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- air
- adjusting plate
- air adjusting
- smoke
- air inlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
Abstract
The present invention relates to a kind of stepless time adjustment range hood, cowling panel (2) including exhaust fume collecting hood (1) and corresponding to oil smoke suction inlet, has the first air inlet (21) and the second air inlet (22) between the arranged on left and right sides edge of the cowling panel (2) and the madial wall (12) of the exhaust fume collecting hood (1)；It is characterized in that：Be rotatably connected on the cowling panel (2) the first air regulating board (31) corresponding with first air inlet (21) and with corresponding second air regulating board (32) of second air inlet (22)；The madial wall of the exhaust fume collecting hood (1) is arc-shaped on longitudinal section, and when the cowling panel (2) is rotated from exhaust fume collecting hood entrance to oil smoke suction inlet, gradually increase along the extended line direction of cowling panel (2), the distance between the outer ledge of cowling panel (2) and the madial wall of the exhaust fume collecting hood (1) on longitudinal section.The present invention can carry out stepless time adjustment to oil smoke aspiration rate, change negative pressure and hold together cigarette district scope, so as to improve cooking fume exhausting effect；And to the water conservancy diversion significant effect of oil smoke air-flow, good oil gas separation effect.
Description
Technical Field
The invention relates to the field of range hoods, in particular to a stepless speed regulation range hood.
Background
The common household cooking utensils usually have two burners on the left and right, and users often use only one burner on one side and use two burners simultaneously on two sides in the cooking process. If the user only uses the left burner to cook or use the left burner to cook or cook, then for the range hood, the oil smoke concentration and the oil smoke particle trend on the left side of the range hood are necessarily much larger than those on the right side, the oil smoke is easy to escape on the left side, and if the flow suction on the right side of the range hood can be properly distributed to the left side at the moment, the smoking effect can be certainly improved.
CN201410543010.X discloses "a ceiling type range hood", including collection petticoat pipe, first cowling panel and second cowling panel, form first, second inlet air passageway between first, second cowling panel and the collection petticoat pipe inner chamber wall respectively, first, second cowling panel rotates and sets up in installation axle both sides, first, second actuating mechanism drive first, second cowling panel respectively and rotate in order to adjust the air intake area size of two inlet air passageways, install the first, second temperature sensor that can perception two air intake temperatures on collection petticoat pipe, first, second actuating mechanism correspondingly drive first cowling panel and second cowling panel according to the difference of both sides air intake temperature to make the air intake area and the air intake temperature phase-match of homonymy. According to the invention, the heating conditions at two sides are judged by sensing the distribution of the left and right temperature fields through the two temperature sensors, the possible directions of large smoke and small smoke are judged in advance, and the distribution of the left and right negative pressure regions is adjusted by adjusting the areas of the left and right air inlets through the two driving mechanisms, so that the oil smoke absorption effect is improved.
The rectifying plates are designed into two rotatable rectifying plates, and only the distribution of a negative pressure area can be adjusted, and the flow distribution and the flow velocity of an air inlet cannot be synchronously adjusted; and the adjustment of the fairing is relatively cumbersome.
Disclosure of Invention
The invention aims to solve the technical problem of providing a stepless speed regulation range hood which can instantly change the distribution, flow distribution and flow velocity of a negative pressure area according to the oil smoke condition aiming at the current situation of the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: the stepless speed regulation range hood comprises a fume collecting hood and a rectifying plate corresponding to a fume suction inlet, wherein a first air inlet and a second air inlet are formed in a gap between the edges of the left side and the right side of the rectifying plate and the inner side wall of the fume collecting hood; the method is characterized in that:
the rectifying plate is rotatably connected with a first air adjusting plate corresponding to the first air inlet and a second air adjusting plate corresponding to the second air inlet;
the inside wall of collection petticoat pipe is the arc on longitudinal section, and the cowling panel when rotating from collection petticoat pipe entry to oil smoke suction inlet, along the extension line direction of cowling panel on longitudinal section, the outside edge of cowling panel with the distance between the inside wall of collection petticoat pipe increases gradually.
The two air adjusting plates can be adjusted in various ways, and can be adjusted manually, automatically or preferably automatically; the two air adjusting plates can be connected in a plurality of rotating modes, preferably, the first air adjusting plate and the second air adjusting plate can be respectively connected to the rectifying plate in a rotating mode through a first rotating shaft and a second rotating shaft;
the first driving device is in driving connection with the first air adjusting plate, and the second driving device is in driving connection with the second air adjusting plate.
Preferably, the first driving device and the second driving device are both cylinders, and piston rods of the cylinders are connected with the corresponding air regulating plates through arc-shaped connecting rods;
and two ends of the connecting rod are respectively hinged with the piston rod of the air cylinder and the corresponding air adjusting plate.
Or the first driving device and the second driving device are both electric push rods, and the push rods of the electric push rods are connected with the corresponding air adjusting plates through arc-shaped connecting rods;
and two ends of the connecting rod are respectively hinged with the piston rod of the air cylinder and the corresponding air adjusting plate.
As a further improvement of the above solutions, a first smoke sensor and a second smoke sensor may be arranged on a panel of the smoke collection cover at intervals, and the first smoke sensor and the second smoke sensor are respectively located at two outer sides of the rectification plate (2) corresponding to the first air inlet and the second air inlet;
the first smoke sensor, the second smoke sensor, the first driving device and the second driving device are electrically connected with corresponding ports of the control element.
The first air adjusting plate, the second air adjusting plate and the inner side wall of the fume collecting hood are arranged at the minimum distance beta 1 、β 2 The smoke concentration alpha detected by the control unit according to the first smoke sensor and the second smoke sensor 1 、α 2 The regulation is determined and controlled according to the following formula:
compared with the prior art, when the stepless speed regulation range hood provided by the invention works, the oil smoke amount of the left side and the right side of the range hood is judged according to the oil smoke concentration detected by the smoke sensor, so that the position of the air adjusting plate is rotated and changed in real time, the gap between the air adjusting plate and the inner side wall of the smoke collecting hood is changed, the oil smoke suction effect of stepless speed regulation is obtained, the flow of a negative pressure area can be distributed in a stepless manner, the flow velocity of an air inlet is changed at the same time, and the oil smoke suction effect of the range hood is greatly improved due to the mutual matching of the air inlet and the air outlet; the air adjusting plate has a flow guiding effect on oil fume flow, and noise of an air inlet is obviously reduced; meanwhile, the flow channel area through which the oil smoke flows is changed, so that the oil smoke flow rate is changed, and the oil-gas separation effect can be further improved.
Drawings
FIG. 1 is a schematic diagram of an adjustment principle of an embodiment of the present invention;
FIG. 2 is a perspective view of an assembly structure according to an embodiment of the present invention;
FIG. 3 is a longitudinal cross-sectional view of an embodiment of the present invention;
FIG. 4 is a schematic perspective view of an assembly structure of a rectifying plate, a driving device and an air adjusting plate according to an embodiment of the present invention;
fig. 5 to 8 are schematic diagrams of different working states according to the embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1 to 8, the stepless speed regulation range hood comprises:
the fume collecting hood 1 is connected below the chassis 15 and is formed by butting an outer hood plate 11 and an inner hood plate 12, wherein the middle part of the inner hood plate 12 is provided with a fume suction inlet 13 communicated with a volute inlet (not shown in the figure) of the range hood. The portion between the lowest end of the inner shroud 12 and the cooking fume suction opening 13 is of an arc structure.
A rectifying plate 2 which is arranged in the middle of the inner cover plate 12 corresponding to the lampblack suction inlet 13 and is connected to the smoke collecting cover 1 through a connecting plate 14; the oil smoke suction inlet can be opened when the range hood works, and closed when the range hood does not work; is of conventional construction. Other configurations known in the art may also be used as desired.
The distance between each point of the inner side wall 12 of the smoke collecting cover 1 from the smoke collecting cover inlet to the smoke suction inlet and the adjacent side edge of the rectifying plate 2 is gradually increased. As shown in fig. 1.
First air inlets 21 and second air inlets 22 are arranged between the left and right side edges of the rectifying plate 2 and the inner side wall 12 of the fume collecting hood 1.
The number of the air adjusting plates is two, wherein one end edge of the first air adjusting plate 31 and one end edge of the second air adjusting plate 32 can be respectively and rotatably connected to the first rotating shaft 33 and the second rotating shaft 34, and the first rotating shaft 33 and the second rotating shaft 34 are supported and limited at the positions, close to the edges of the two sides, of the rectifying plate 2.
The rectifying plate 2 is further provided with a first driving device 35 and a second driving device 36, in this embodiment, the first driving device 35 and the second driving device 36 are both electric push rods, and the push rods 37 of the electric push rods are connected with the corresponding first air adjusting plate 31 and the second air adjusting plate 32 through connecting rods 38.
The connecting rod 38 is an arc structure, and two ends of the connecting rod are respectively hinged with the push rod 37 and the corresponding air adjusting plate.
The first driving device 35 and the second driving device 36 can also be replaced by air cylinders, and piston rods of the air cylinders are connected with the corresponding air adjusting plates through arc-shaped connecting rods.
A first air adjusting plate 31 corresponding to the first air inlet 21 and a second air adjusting plate 32 corresponding to the second air inlet 22 are rotatably connected to the rectifying plate 2;
the widths of the first air adjusting plate 31 and the second air adjusting plate 32 are matched with the widths of the corresponding first air inlet 21 and the corresponding second air inlet 22, and when the air conditioner does not work, the two air inlet are closed by the two air adjusting plates.
Two smoke sensors including a first smoke sensor 41 and a second smoke sensor 42 for detecting the smoke concentration passing through the first air inlet 21 and the second air inlet respectively; on the lower panel 14 of the smoke collecting cover 1, two smoke sensors are arranged on two outer sides of the rectifying plate 2.
The first smoke sensor 41, the second smoke sensor 42, the first driving device 33 and the second driving device 34 are electrically connected to corresponding ports of a control unit (not shown).
In operation, the control unit is responsive to the smoke concentration α detected by the first and second smoke sensors 41, 42 1 、α 2 The operation of the two driving devices is controlled according to the following formula, so that the minimum distance beta between the first air adjusting plate 31 and the second air adjusting plate 32 and the inner side wall of the fume collecting hood 1 is adjusted 1 、β 2 ；
With different rotation positions of the air adjusting plate, the gap between the air adjusting plate and the inner side wall of the fume collecting hood can be changed, as shown in fig. 1 and 8; because each point on the inner side wall of the smoke collecting hood and the rectificationThe distance between the plates is gradually increased from bottom to top; according to the equation of continuity of the fluid,when the flow Q is unchanged, the smaller the cross-sectional area S between the air adjusting plate and the inner side wall of the fume collecting hood, the greater the airflow speed V, so that the airflow speed A is different from the position of the air adjusting plate and corresponds to four positions A, B, C and D>B>C>, D. Along with the rotation of the air adjusting plate, the stepless speed adjusting effect can be obtained.
When the air adjusting plate is positioned in the range of an alpha included angle formed by the edges of the left side and the right side of the oil fume suction inlet and the connecting line of the corresponding rotating shaft, the suction force and the negative pressure area are matched with each other, so that good suction force can be obtained, meanwhile, the range of the negative pressure area is large, the oil fume can be effectively prevented from escaping outwards, and a good suction effect is obtained; the flow guiding effect of the air adjusting plate on the oil smoke gas flow is obvious, and the noise is reduced; when the air adjusting plate is positioned at the connecting line position of the rotating shaft and the centerline L of the oil fume suction inlet, the suction effect is best, and the sound quality is best.
Simultaneously, because the oil smoke gets into collection petticoat pipe at the air intake with the high velocity of flow in, after crossing the air adjusting plate, the volume increases suddenly, and oil smoke speed reduces, can further improve oil-gas separation.
When the device works, when the oil smoke concentrations detected by the two smoke sensors do not reach the set threshold value, the oil smoke is judged to be small. Otherwise, the oil smoke amount is judged to be larger. And logically combining the oil smoke concentration conditions collected by the two smoke sensors so as to adjust the positions and angles of the first air adjusting plate and the second air adjusting plate.
Fig. 5 to 7 show the working states of two air adjusting plates in three typical cases.
During cooking, for example, when rice steaming, water boiling or simple frying cooking is performed, the amount of generated oil smoke is small, at the moment, the concentrations of the oil smoke detected by the two smoke sensors do not reach the set threshold value, the amount of the oil smoke on both sides is judged to be small, the first air adjusting plate and the second air adjusting plate are rotated by the driving device, the first air adjusting plate and the second air adjusting plate are both positioned at the position of a connecting line of the rotating shaft and a central line L of an oil smoke suction inlet, as shown in fig. 7, at the moment, the area of a negative pressure smoke gathering area reaches the maximum, according to the fluid continuous characteristic, under the condition that the flow is not changed, the speed of the air inlet is small, the noise generated by the range hood is small, and because the two air adjusting plates point to the center of the suction inlet, the range hood has a good oil smoke diversion effect, and the noise is further improved. And because the amount of the generated oil smoke is relatively small, the oil smoke can be completely sucked by adopting a small air inlet and a large negative pressure area.
When the oil smoke concentration detected by the smoke sensor on the left side reaches a set threshold value, and the oil smoke concentration detected by the smoke sensor on the right side does not reach the set threshold value, for example, when the furnace end on the left side of the stove is used for stir-frying and the furnace end on the right side is used for steaming rice, at the moment, the oil smoke amount on the left side is large, the oil smoke amount on the right side is small, as shown in fig. 5, the first air adjusting plate 31 is adjusted to be located at the position of a connecting line of a rotating shaft and the central line L of an oil smoke suction inlet, the second air adjusting plate 32 rotates clockwise, so that the air inlet area of the second air inlet is reduced, according to the continuity of fluid, under the condition that the total flow is not changed, the right side flow is reduced, and the left side flow is increased. At the moment, the smoking effect on the left side is improved, and the area of the air inlet on the right side is adjusted in real time according to the ratio of the oil smoke concentrations detected by the two smoke sensors, so that the flow of the left side and the flow of the right side are adjusted in real time. Because the oil smoke volume on the right side is small, the oil smoke can be exhausted completely at a relatively small flow rate. And when the left oil smoke amount is small and the right oil smoke amount is large, the opposite is true.
When the oil smoke concentrations detected by the two smoke sensors reach the set threshold value, the oil smoke amounts on the two sides are large, as shown in fig. 6, the first air adjusting plate 31 rotates anticlockwise, the second air adjusting plate 32 rotates clockwise, the inlet area is reduced, according to the continuity of fluid, the air inlet speeds on the two sides are greatly increased under the condition that the total flow is not changed, and the oil smoke is quickly sucked into the range hood before the oil smoke diffuses and escapes. According to the change of the oil smoke concentration detected by the two smoke sensors, the areas of the air inlets on the left side and the right side are adjusted in real time, and the adjustment formula isIn the formula of alpha 1 The smoke concentration, alpha, detected by the smoke sensor on the left 2 The oil smoke concentration, beta, detected by the smoke sensor on the right 1 The distance between the movable end of the first air adjusting plate and the inner side wall of the fume collecting hood (namely the minimum air inlet area on the left side) is beta 2 The distance between the movable end of the second air adjusting plate and the inner side wall of the fume collecting hood (namely the minimum air inlet area on the right side) is used for changing the air speed of the negative pressure area and the air inlet, so that the fume suction effect of the range hood is optimal.
In the description of the present invention, the terms "left side", "right side", "middle", "clockwise", "counterclockwise", etc. indicate the direction or positional relationship based on the direction or positional relationship shown in the drawings, which is only for the convenience of description and understanding of the technical solutions of the present invention, and the above description is not intended to limit the present invention, and the present invention is not limited to the examples described above, and those skilled in the art should consider the scope of the present invention as changes, modifications, additions or substitutions made within the spirit of the present invention.
Claims (6)
1. A stepless speed regulation range hood comprises a fume collecting hood (1) and a rectifying plate (2) corresponding to a fume suction inlet, wherein a first air inlet (21) and a second air inlet (22) are formed in a gap between the edges of the left side and the right side of the rectifying plate (2) and the inner side wall (12) of the fume collecting hood (1); the method is characterized in that:
a first air adjusting plate (31) corresponding to the first air inlet (21) and a second air adjusting plate (32) corresponding to the second air inlet (22) are rotatably connected to the rectifying plate (2);
the inside wall of collection petticoat pipe (1) is the arc on longitudinal section, and cowling panel (2) when rotating from collection petticoat pipe entry to oil smoke suction inlet, along the extension line direction of cowling panel (2) on longitudinal section, the outside edge of cowling panel (2) with distance between the inside wall of collection petticoat pipe (1) increases gradually.
2. The stepless speed regulating range hood according to claim 1, characterized in that the first air adjusting plate (31) and the second air adjusting plate (32) are respectively rotatably connected to the rectifying plate (2) through a first rotating shaft (33) and a second rotating shaft (34);
the first driving device (35) is in driving connection with the first air adjusting plate (31), and the second driving device (36) is in driving connection with the second air adjusting plate (32).
3. The stepless speed regulation range hood according to claim 2, characterized in that the first driving device (35) and the second driving device (36) are both cylinders, and the piston rods of the cylinders are connected with the corresponding air adjusting plates through arc-shaped connecting rods (38);
and two ends of the connecting rod (38) are respectively hinged with the piston rod of the air cylinder and the corresponding air adjusting plate.
4. The stepless speed regulation range hood according to claim 2, characterized in that the first driving device (35) and the second driving device (36) are both electric push rods, and the push rods (37) of the electric push rods are connected with the corresponding air adjusting plates through arc-shaped connecting rods (38);
two ends of the connecting rod (38) are respectively hinged with a push rod (37) of the electric push rod and the corresponding air adjusting plate.
5. The stepless speed regulation range hood according to claim 2, 3 or 4 is characterized in that a first smoke sensor (41) and a second smoke sensor (42) are arranged on a panel of the smoke collecting hood (1) at intervals, and the first smoke sensor (41) and the second smoke sensor (42) are respectively located at two outer sides of the rectifying plate (2) corresponding to the first air inlet (21) and the second air inlet (22);
the first smoke sensor (41), the second smoke sensor (42), the first driving device (33) and the second driving device (34) are all electrically connected with corresponding ports of a control unit.
6. Stepless speed regulation range hood according to claim 5, characterized in that the first air adjusting plate (31) and the second air adjusting plate(32) The minimum distance beta between the inner side wall of the smoke collecting hood (1) 1 、β 2 The smoke concentration alpha detected by the control unit according to the first smoke sensor (41) and the second smoke sensor (42) 1 、α 2 The regulation is determined and controlled according to the following formula:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710409926.XA CN107975846B (en) | 2017-06-02 | 2017-06-02 | Stepless speed regulating fume exhaust fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710409926.XA CN107975846B (en) | 2017-06-02 | 2017-06-02 | Stepless speed regulating fume exhaust fan |
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| Publication Number | Publication Date |
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| CN107975846A true CN107975846A (en) | 2018-05-01 |
| CN107975846B CN107975846B (en) | 2023-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710409926.XA Active CN107975846B (en) | 2017-06-02 | 2017-06-02 | Stepless speed regulating fume exhaust fan |
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| CN (1) | CN107975846B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109373384A (en) * | 2018-10-26 | 2019-02-22 | 浙江欧琳生活健康科技有限公司 | A kind of kitchen ventilator |
| CN113405132A (en) * | 2021-06-23 | 2021-09-17 | 海信(广东)厨卫系统股份有限公司 | Smoke collecting hood and using method thereof |
| CN113834104A (en) * | 2021-09-08 | 2021-12-24 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN113915655A (en) * | 2021-10-27 | 2022-01-11 | 宁波方太厨具有限公司 | Filter screen, range hood and oil smoke filtering method |
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| CN113834104A (en) * | 2021-09-08 | 2021-12-24 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN113915655A (en) * | 2021-10-27 | 2022-01-11 | 宁波方太厨具有限公司 | Filter screen, range hood and oil smoke filtering method |
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| Publication number | Publication date |
|---|---|
| CN107975846B (en) | 2023-08-18 |
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