CN109595645B - Near-suction type range hood - Google Patents
Near-suction type range hood Download PDFInfo
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- CN109595645B CN109595645B CN201710924462.6A CN201710924462A CN109595645B CN 109595645 B CN109595645 B CN 109595645B CN 201710924462 A CN201710924462 A CN 201710924462A CN 109595645 B CN109595645 B CN 109595645B
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- panel
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- 239000000779 smoke Substances 0.000 claims abstract description 95
- 230000000903 blocking effect Effects 0.000 claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims description 36
- 238000009792 diffusion process Methods 0.000 claims description 24
- 230000005540 biological transmission Effects 0.000 claims description 19
- 239000003517 fume Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 description 15
- 239000006233 lamp black Substances 0.000 description 6
- 235000019504 cigarettes Nutrition 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 238000010411 cooking Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 230000000391 smoking effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000010420 art technique Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- 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
- F24C15/2035—Arrangement or mounting of filters
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
Abstract
The invention discloses a near-suction type range hood, which comprises a shell, a case and a fan system, wherein the case is positioned above the shell, the shell comprises a panel which is positioned at the front end and is inclined with the horizontal direction, and an opening is formed in the panel to form an air inlet of the range hood, and the near-suction type range hood is characterized in that: the fan system comprises a first ternary fan and a second ternary fan which are arranged in parallel, the fan system is arranged in a case, a smoke blocking screen is arranged on the front side of the panel, and the smoke blocking screen is rotationally connected with the upper portion of the panel, so that the smoke blocking screen can rotate outwards to open an air inlet of the range hood or rotate inwards to close the air inlet of the range hood. When the range hood does not work, the filter screen and the fan system which can hide greasy dirt are closed by the fume blocking screen, so that the range hood is kept clean and tidy, and the kitchen environment is obviously improved.
Description
Technical Field
The invention relates to kitchen appliances, in particular to a near-suction type range hood.
Background
The range hood has become one of the indispensable kitchen appliances in modern families. The general range hood comprises a top suction type range hood and a near suction type range hood, the near suction type range hood is far away by utilizing vortex wind pressure, most of oil smoke which is nearer to a cooking bench is absorbed in an arc line mode, adverse effects on human health can be reduced, a power source is nearer to the cooking bench, and the suction effect of the power source is basically not reduced.
The side-draft range hood disclosed in the chinese patent application No. 201110338726.2 comprises: an outer panel having a first intermediate opening; the middle panel is arranged at the first middle opening of the outer panel, and a smoke inlet is formed between the middle panel and the outer panel; the smoke collecting cavity is positioned at the inner side of the external panel and communicated with the smoke inlet; the oil cup is arranged below the smoke collecting cavity; a gap exists between the lower edge of the smoke collecting cavity and the inner surface of the outer panel to form a first oil guide channel communicated with the inner cavity of the oil cup.
According to the scheme in the prior art, the middle panel is fixed, the gap for sucking the smoke is arranged between the middle panel and the outer panel, and the gap is determined in the prior art and manufactured, so that the gap is in a permanent open state, the smoke collecting hood and the flue are in a straight-through state, the smoke baffle plate cannot effectively block smoke smell of other users in the whole flue, and great inconvenience and environmental pollution are brought to the users.
Disclosure of Invention
The invention aims to solve the technical problems of the prior art and provides a near-suction type range hood capable of improving smoking efficiency.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a near-suction type range hood, includes the casing, is located the quick-witted case and the fan system of casing top, the casing is the panel of slope including being located the front end with the horizontal direction, set up the opening on the panel and become the air intake of range hood, its characterized in that: the fan system comprises a first ternary fan and a second ternary fan which are arranged in parallel, the fan system is arranged in a case, a smoke blocking screen is arranged on the front side of the panel, and the smoke blocking screen is rotationally connected with the upper portion of the panel, so that the smoke blocking screen can rotate outwards to open an air inlet of the range hood or rotate inwards to close the air inlet of the range hood.
For making keep off cigarette screen can open and shut automatically, convenient to use still includes driving mechanism and drive mechanism that is used for the drive keep off cigarette screen action, driving mechanism sets up in the casing, drive mechanism is connected with keeping off cigarette screen, driving mechanism passes through drive mechanism and drives and keep off cigarette screen and open and shut automatically.
Preferably, in order to facilitate the control of the smoke shielding screen and improve the sealing effect, the left side and the right side of the panel are respectively provided with a through groove, and the through grooves extend in the upper and lower directions; the transmission mechanism comprises two groups of combinations consisting of a first connecting seat, a second connecting seat, a connecting rod and a support, and the combinations are respectively arranged at the left side and the right side of the smoke shielding screen; in each group, one end of the first connecting seat is fixedly connected with one side of the smoke shielding screen facing the shell, the other end of the first connecting seat is rotatably connected with one end of the connecting rod, the other end of the connecting rod penetrates through the through groove to be rotatably connected with the support, the support is fixedly arranged on the inner side of the panel facing the shell, one end of the second connecting seat is fixedly connected with one side of the smoke shielding screen facing the shell, the other end of the second connecting seat penetrates through the through groove to extend to the inner side of the panel, and the second connecting seat is positioned below the first connecting seat; the driving mechanism is used for driving one of the second connecting seats to act.
Preferably, for making the flexible and reliable action of keeping off the cigarette screen, actuating mechanism is electric putter, sets up about wherein one side in the casing, actuating mechanism still includes the transfer line, and one of them second connecting seat extends into the inboard one end of panel and rotates with the one end of transfer line to be connected, the other end of transfer line is then connected with actuating mechanism's output.
For on the basis of not changing the machine case size, increase the amount of wind, first ternary fan includes first ternary impeller and first air intake, the ternary fan of second includes second ternary impeller and second air intake, on the oil smoke flow path, second air intake is equal with first air intake position, first air intake and second air intake set up side by side to the left and right sides of quick-witted case respectively.
Preferably, in order to reduce wind resistance and improve the oil fume absorbing effect on the premise of not increasing the size of the case, the first ternary impeller of the first ternary fan and the second ternary impeller of the second ternary fan respectively form 60-90 degrees with the horizontal direction, and the two ternary impellers incline towards opposite directions.
According to one aspect of the invention, the first ternary fan further comprises a first volute, the first ternary impeller is arranged in the first volute, the second ternary fan further comprises a second volute, the second ternary impeller is arranged in the second volute, the first volute and the second volute are arranged at intervals and side by side, the first air inlet is formed in the first volute, the second air inlet is formed in the second volute, a first oil smoke channel is formed in the first volute, a first air outlet is formed at the top end of the first oil smoke channel, a second oil smoke channel is formed in the second volute, and a second air outlet is formed at the top end of the second oil smoke channel.
According to another aspect of the invention, the first ternary impeller and the second ternary impeller are arranged at intervals and side by side in the same volute, a first air inlet corresponding to the first ternary impeller and a second air inlet corresponding to the second ternary impeller are respectively formed at two opposite sides of the volute, a mounting plate is arranged between the first ternary impeller and the second ternary impeller and extends to the top end of the volute, so that the interior of the volute is divided into two independent first oil smoke channels and second oil smoke channels, the top end of each first oil smoke channel forms a first air outlet, and the top end of each second oil smoke channel forms a second air outlet.
In order to drive two impellers simultaneously, the device further comprises a driving motor arranged between the first ternary impeller and the second ternary impeller, and the driving motor is provided with double output shafts for driving the first ternary impeller and the second ternary impeller respectively.
For playing the water conservancy diversion effect to the gas of the corresponding export of two ternary fans, be favorable to the outlet gas to form laminar flow to reduce flow loss by a wide margin, raise the efficiency, fan system's air outlet department is provided with the air-out cover, the air-out cover is including being the cover body of cavity tube-shape, the cover body has relative, open-ended first end and second end, the bore of first end is greater than the bore of second end, its characterized in that: the novel three-dimensional air diffuser is characterized in that a first guide plate and a second guide plate are arranged in the cover body, each guide plate extends from the first end of the cover body to the second end, a first diffusion flow passage is formed between the first guide plate and the inner side wall of the cover body, a second diffusion flow passage is formed between the second guide plate and the inner side wall of the cover body, the sectional areas of the first diffusion flow passage and the second diffusion flow passage are gradually reduced from the first end of the cover body to the second end of the cover body respectively, the first diffusion flow passage corresponds to the first air outlet of the first three-dimensional air blower at the first end of the cover body, and the second diffusion flow passage corresponds to the second air outlet of the second three-dimensional air blower at the first end of the cover body.
Compared with the prior art, the invention has the advantages that: when the range hood does not work, the filter screen and the fan system which can hide greasy dirt are closed by the fume blocking screen, so that the range hood is kept clean and tidy, and the kitchen environment is obviously improved; when the range hood works, the smoke baffle can be opened to drain the air around the shell, so that the airflow passing through the outer rectifying layer can be effectively split, rectified and guided, turbulence and turbulence in the airflow are reduced, smooth airflow is formed, namely, the smoke collection area of the shell is increased, and the smoke exhaust effect of the range hood can be better improved; the adopted automatic opening and closing driving mechanism and transmission mechanism can enable the smoke blocking screen to flexibly lift and rotate to be abutted according to the shell panel, so that the control is more convenient and quick, and the sealing effect is better; by adopting two ternary fans, the structure of the fan is compact, the size is relatively small, the efficiency of the fan and the air pressure are high, the generated negative pressure gradient is large, and the smoking efficiency can be greatly improved; the whole volume of the fan formed after parallel connection is smaller, the original size of the case is not required to be changed, the air quantity can be doubled under the condition of keeping higher air pressure, and the oil fume suction efficiency is improved; the two air inlets face to the left and right sides respectively, so that the area of the negative pressure areas at the periphery of the two sides is increased, the two air inlets are suitable for two cooking tops, the effect of no smoke leakage is achieved, the noise propagation path does not face to a user, and the noise is reduced; the parallel double-ternary fan has high flow, high inlet wind speed and needs to supplement a plurality of airflows from the periphery, but the main function of the range hood is that the range hood can absorb a plurality of airflows above the range hood without adding a rotary smoke baffle, the absorption of real lampblack is limited, and the rotating smoke baffle can block the airflows above the range hood, so that the parallel double-ternary fan only absorbs lampblack below the fan, the lampblack is more efficient, the lampblack can escape from no place, and the range hood has good lampblack absorbing effect and good anti-interference effect even if people walk.
Drawings
Fig. 1 is a schematic view of a first embodiment of a range hood according to the present invention;
fig. 2 is a cross-sectional view of the range hood of fig. 1;
fig. 3 is a schematic view illustrating an opened state of a smoke screen of the range hood of fig. 1;
fig. 4 is an exploded view of the range hood of fig. 1;
fig. 5 is a partial structural schematic view of the range hood of fig. 1;
FIG. 6 is a partially exploded view of FIG. 5;
FIG. 7 is a cross-sectional view of a fan system and an outlet hood of the range hood of FIG. 1;
fig. 8 is a schematic view of an outlet hood of the range hood of fig. 1;
fig. 9 is a schematic view of a second embodiment of a fan system of the range hood of the present invention;
fig. 10 is a cross-sectional view of a fan system and an outlet hood of the range hood of fig. 9.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
Referring to fig. 1 to 6, a near-suction type range hood includes a housing 1 and a cabinet 2 disposed above the housing 1, and hereinafter, for convenience of description, "front", "rear", "left", "right", "up", "down" refer to the direction of a user relative to the range hood when the range hood is in use, and are not limited in structure.
In the present embodiment, the housing 1 includes the first side plates 11 on the left and right sides, and the front end surfaces of the first side plates 11 are inclined gradually rearward (inclined from the horizontal direction) from top to bottom so as to be inclined toward the front side of the user. A top plate 12 is provided at the top end between the two first side plates 11, and a rear side plate 13 is provided at the rear end between the two first side plates 11. The chassis 2 includes four second side plates 21, and an air duct 25 through which the oil smoke passes is formed between the second side plates 21.
A panel 14 is disposed between the front ends of the two first side plates 11, the panel 14 includes an inner panel 142, and an outer panel 143 surrounding the outer periphery of the inner panel 142 to form a frame, and an opening 141 is formed in the inner panel 142 to form an air inlet of the range hood, preferably, the air inlet is located in the center of the inner panel 142. The inner panel 142 is recessed inwardly of the housing 1 relative to the outer panel 143, and the outer edge of the inner panel 142 and the inner edge of the outer panel 143 are closed in the middle, and both the inner panel 142 and the outer panel 143 are planar.
The upper part of the front side of the panel 14 is provided with a smoke shielding screen 15, the lower part is provided with a baffle 18, the whole formed by the smoke shielding screen 15 and the baffle 18 is matched with the shape and the size of an outer panel 143, a certain angle is formed between the smoke shielding screen 15 and the inner panel 142 when the range hood works, and oil smoke enters the shell 1 from an air inlet after passing through the interval between the smoke shielding screen 15 and the inner panel 142. The panel 14 and the smoke barrier 15 are inclined at an angle to the horizontal, the baffle 18 may be flush with the outer panel 143, and the smoke barrier 15 corresponds to at least part of the air intake.
Preferably, the smoke barrier 15 is rotatably connected to the upper portion of the panel 14 and rotatable relative to the panel 14, and the baffle 18 is fixedly connected to the panel 14. The smoke screen 15 is rotatably connected with the panel 14 through a driving mechanism 151 and a transmission mechanism 152. Preferably, the driving mechanism 151 is an electric push rod, and is disposed in the housing 1 on one of the left and right sides corresponding to the smoke barrier 15. The transmission mechanism 152 includes a first connection base 1521, a second connection base 1522, a connecting rod 1523, and a support 1524, wherein a combination of the first connection base 1521, the second connection base 1522, the connecting rod 1523, and the support 1524 has two groups. The inner panel 142 has a through groove 1421 formed on both left and right sides thereof, and the through groove 1421 extends in the up-down direction. In each group, one end of the first connecting seat 1521 is fixedly connected to one side of the smoke shielding screen 15 facing the inside of the housing 1, the other end of the first connecting seat 1521 is rotatably connected to one end of the connecting rod 1523, and the other end of the connecting rod 1523 is rotatably connected to the support 1524 through the through groove 1421, wherein the support 1524 is fixed to the inner side of the inner panel 14 facing the inside of the housing 1 and adjacent to the through groove 1421. One end of the second connecting seat 1522 is fixedly connected to the side of the smoke screen 15 facing the inside of the housing 1, and the other end extends to the inside of the panel 14 through the through groove 1421. The second connection seat 1522 is located below the first connection seat 1521.
The transmission mechanism 152 further comprises a transmission rod 1525, wherein one end of one second connecting seat 1522 extending into the inner side of the panel 14 is rotatably connected with one end of the transmission rod 1525, and the other end of the transmission rod 1525 is connected with the output end of the driving mechanism 151, so that the driving mechanism 151 can drive the transmission mechanism 152 to act, thereby opening or closing the smoke screen 15. The end of the other second connector 1522 that extends into the panel 14 is the free end.
When the range hood works, the driving mechanism 151 is started, one end, connected with the driving mechanism 151, of the transmission rod 1525 is pushed forward, at the moment, one end, connected with the second connecting seat 1522, of the transmission rod 1525 is pushed forward, therefore, the second connecting seat 1522 moves upwards in the through groove 1421 and rotates forward at the same time, the first connecting seat 1521 moves upwards relative to the support 1524 and rotates forward, the smoke blocking screen 15 gradually leaves the panel 14 and rotates upwards to be opened, when the smoke blocking screen 15 is opened to a certain angle, the driving mechanism 151 stops working, at the moment, the smoke blocking screen 15 keeps in an open state at a certain angle, and oil smoke can enter the shell 1. When the range hood stops working, the driving mechanism 151 runs reversely, the smoke blocking screen 15 moves downwards and rotates backwards to be pulled back to be close to the inner panel 142, at the moment, the air inlet is closed by the smoke blocking screen 15, and preferably, the smoke blocking screen 15 is flush with the outer panel 143 into a whole.
Through the smoke blocking screen 15, when the smoke blocking screen 15 is opened, the smoke blocking screen 15 can flexibly translate and rotationally lean against according to the size of the included angle on the front side of the shell 1, the smoke blocking screen 15 is opened more conveniently and more conveniently, the sealing effect is better, the smoke gathering area is larger, and the smoke gathering capacity is strong; when the kitchen ventilator is closed, the filter screen and the fan with greasy dirt can be hidden, so that the kitchen ventilator is clean and tidy, is convenient to clean, can prevent the smell of the lampblack, and has obvious improvement effect on the kitchen air environment.
A filter screen is arranged in the shell 1, and the filter screen can be arranged corresponding to the opening 141 of the shell 1 or can be arranged at the air inlet of the fan system. A bottom plate 17 is connected between the bottom of the housing 1, the bottom of the rear side plate 13 and the bottom of the face plate 14. The first side panel 11, top panel 12, rear side panel 13, face panel 14, smoke guide panel 15 and bottom panel 17 together define a cavity within the housing 1.
In this embodiment, a fan system 4 is disposed in the chassis 2, and preferably, the fan system 4 is a three-way fan, and the three-way fan can be in the prior art, as disclosed in chinese patent with application No. 201310418009. The fan system 4 can be a single ternary fan, two ternary fans connected in parallel or two ternary fans connected in series, and the ternary fans have the characteristics of compact structure, relatively small size, high fan efficiency and high wind pressure, so that the negative pressure gradient can be generated, and the smoking efficiency can be greatly improved. The specific structure of the fan system 4 will be described in detail below. An air outlet cover 5 connected with an air outlet of the fan system 4 is arranged above the case 2, so that the oil smoke can be discharged into a public flue through the air outlet cover 5. In order to enable the oil smoke to be better guided into the three-way fan, an air deflector 6 is arranged in the shell 1, below the fan system 4 and between the panels 14.
Referring to fig. 7 and 8, in the present embodiment, the fan system 4 includes two independently operable first and second three-way fan systems 41 and 42, which are disposed in parallel. By using the ternary impeller, compared with a centrifugal fan, the flow efficiency can be greatly increased, and the air quantity can be improved.
The first tertiary fan system 41 includes a first volute 411 and a first tertiary impeller 412 disposed within the first volute 411, and the second tertiary fan system 42 includes a second volute 421 and a second tertiary impeller 422 disposed within the second volute 421. The first volute 411 and the second volute 421 are arranged side by side at intervals, a first air inlet 413 is formed on the first volute 411, a second air inlet 423 is formed on the second volute 421, the air inlets of the two volutes are far away from each other, namely, the air inlet 313 of the first volute 411 is formed on one side far away from the second volute 421, the two volutes are arranged back to back, so that the two three-way fans are arranged side by side left and right, and the first air inlet 413 faces the left side of the case 2, and the second air inlet 423 faces the right side of the case 2. When the fume enters from the fume collecting hood 1, the fume enters into the fan system 4 from the left side and the right side respectively. A first oil smoke channel 441 is formed in the first volute 411, a first air outlet 414 is formed at the top end of the first oil smoke channel 441, a second oil smoke channel 442 is formed in the second volute 421, a second air outlet 424 is formed at the top end of the second oil smoke channel 442, and the first air outlet 414 and the second air outlet 424 are arranged side by side at intervals.
The first tertiary impeller 412 and the second tertiary impeller 422 may employ prior art techniques, such as those disclosed in applicant's application number 201620102790.9. The first and second three-way impellers 412 and 422 share the same driving motor 43, the driving motor 43 is disposed between the first and second volutes 411 and 421, and the driving motor 43 has a double output shaft, so that the output shaft 431 extending leftwards may be connected to the first three-way impeller 412 to drive the first three-way impeller 412 to operate, and the output shaft 431 extending rightwards may be connected to the second three-way impeller 422 to drive the second three-way impeller 422 to operate. Therefore, the two ternary fans have good synchronism, and meanwhile, energy sources can be saved.
The first and second three-way impellers 412 and 422 may respectively form 60 to 90 ° with the horizontal direction, and the two impellers are inclined in opposite directions (the first three-way impeller 412 is inclined to the left and the second three-way impeller 422 is inclined to the right), thereby reducing wind resistance and improving the oil fume absorbing effect. The center of the first ternary impeller 412 is kept at a certain distance from the inlet of the air duct 25 of the range hood, which is 1-2 times the diameter of the first ternary impeller 412, the center of the second ternary impeller 422 is kept at a certain distance from the inlet of the air duct 25 of the range hood, which is 1-2 times the diameter of the second ternary impeller 422, and the distance between the center of the impeller and the inlet of the air duct 25 must be greater than the diameter of the impeller, so that the rotary filter screen 6 at the inlet of the air duct 25 can only work, but cannot be greater than 2 times the diameter, otherwise the distance from the negative pressure area is too far.
The two ternary fans can adopt the same structure, and the overall size of the fan system is smaller in the arrangement mode, so that the original size of the case 2 is not changed, the air quantity can be doubled under the condition of keeping higher air pressure, and the oil fume suction efficiency is improved. The two air inlets face to the left and the right sides respectively, so that the area of the negative pressure areas at the periphery of the two sides is increased, the two air inlets are suitable for two cooking heads, and the effect of no smoke leakage is achieved; the noise propagation path is directed to the left and right sides, not toward the user as in the prior art, thereby reducing noise.
An air outlet cover 5 is arranged above the fan system 4, and a cover body 51 of the air outlet cover 5 covers a first air outlet 414 of a first volute 411 of the first ternary fan system 41 and a second air outlet 424 of a second volute 421 of the second ternary fan system 42 and are communicated. In this embodiment, the air outlet cover 5 includes a cover body 51 and a deflector disposed in the cover body 51. The hood 51 is hollow and cylindrical, and has opposite first and second ends 511 (lower and upper ends) and 512, the first end 511 having a larger diameter than the second end 512, i.e., the opening gradually decreases from a position closer to the fan system 4 to a position farther from the fan system 4, and the flow of soot enters the hood 51 from the first end 511 and exits the hood 51 from the second end 512 into an external duct connected to the exhaust hood 5.
The baffle includes a first baffle 521 and a second baffle 522, the first baffle 521 extending from the first end 511 to the second end 512 of the shroud 51, and the first baffle 521 corresponding at the first end 511 of the shroud 51 to a first edge 415 (right edge of the first air outlet) of the first tertiary fan system 41 proximate to the second air outlet 424 of the second tertiary fan system 42, at the first air outlet 414 of the first tertiary fan system 41, and the second baffle 522 corresponding at the first end 511 of the shroud 51 to a second edge 425 (left edge of the second air outlet) of the second tertiary fan system 42 proximate to the first air outlet 414 of the first tertiary fan system 41. Each baffle has a width extending in the front-to-rear direction. The first baffle 521 is gradually inclined toward the second baffle 522 (rightward) from the first end 511 to the second end 512, and the second baffle 522 is gradually inclined toward the first baffle 521 (leftward) from the first end 511 to the second end 512, i.e., each baffle extends from a position offset from the middle of the bottom of the casing 51 toward a position in the middle of the top of the casing 51. The top ends of the first baffle 521 and the second baffle 522 (near the second end 512 of the shroud 51) are connected to each other, and preferably, the connection between the two baffles is rounded, so as to guide the air flow to smoothly transition.
The front and rear side edges 5211, 5212 of the first baffle 521 are always connected to the inner side wall of the cover 51, and the front and rear side edges 5221, 5222 of the second baffle 522 are always connected to the inner side wall of the cover 51. The interior of the housing 51 is thus divided into a first diffusion flow passage 531 between the inner side wall of the housing 51 and the first baffle 521, and a second diffusion flow passage 532 between the inner side wall of the housing 51 and the second baffle 522, the first diffusion flow passage 531 and the second diffusion flow passage 532 being independent of each other. The first diffuser 531 corresponds to the first air outlet 414 of the first tertiary fan system 41 at the first end 511 of the shroud 51, i.e., completely covers the first air outlet 414, and the second diffuser 532 corresponds to the second air outlet 424 of the second tertiary fan system 42 at the first end 511 of the shroud 51, i.e., completely covers the second air outlet 424. The cross-sectional area of the first diffusion flow channel 531 gradually decreases from the first end 511 to the second end 512, and the cross-sectional area of the second diffusion flow channel 532 gradually decreases from the first end 511 to the second end 512, so that the outlet speed at the top of the first diffusion flow channel 531 is greater than the outlet speed at the bottom of the first diffusion flow channel 531, and the outlet speed at the top of the second diffusion flow channel 532 is greater than the outlet speed at the bottom of the second diffusion flow channel 532.
By providing the above-described baffle, the air flow speeds of the first diffuser 531 communicating with the first air outlet 414 of the first three-way fan system 41 and the second diffuser 42 communicating with the second air outlet 424 of the second three-way fan system 42 are made close to each other. The diversion effect of the air outlet cover 5 is beneficial to the formation of laminar flow of the outlet air, and the air enters the external pipeline after forming the laminar flow, so that the defect that the air flow directly enters the external pipeline in a turbulent state after exiting from the volute is avoided, and the strong friction and impact during the mixing of the air flows at the air outlets of the two three-way fans are also avoided, thereby greatly reducing the flow loss and improving the efficiency.
The sound absorbing holes 54 are densely distributed on the first baffle 521 and/or the second baffle 522, which is beneficial to reducing outlet noise. To further reduce noise, a partition 55 may be further provided in the space between the first and second baffles 521 and 522 such that the space between the first and second baffles 521 and 522 is partitioned into at least two resonant cavities 551. Alternatively, sound absorbing cotton may be provided in a space between the first baffle 521 and the second baffle 522. Alternatively, the baffle 55 may be replaced with a reinforcing rib to enhance the strength of the baffle.
Example two
Referring to fig. 9 and 10, in the present embodiment, the difference from the first embodiment described above is that the first tertiary fan system 41 and the second tertiary fan system 42 share the same volute 44, that is, the first tertiary impeller 412 of the first tertiary fan system 41 and the second tertiary impeller 422 of the second tertiary fan system 42 are disposed together in the same volute 44.
A mounting plate 45 is provided between the two three-way impellers so as to separate the two three-way impellers on both sides of the mounting plate 45, and the mounting plate 45 extends to the top end of the volute 44 so as to separate the interior of the volute 44 into two independent first oil smoke channel 441 and second oil smoke channel 442. The driving motor 43 passes through the mounting plate 45 and is fixedly connected with the mounting plate 45.
In the present embodiment, the air outlet cover 5 includes only the cover body 51 and the baffle 56 disposed in the cover body 51, the baffle 56 extends in the flow direction of the oil smoke, and in the present embodiment, the baffle 56 is located corresponding to the mounting plate 45 so as to partition the cover body 51 into the independent first diffuser 531 and the second diffuser 532 corresponding to the oil smoke passage in the volute 44.
Alternatively, the air outlet cover 5 may also adopt the structure of the first embodiment.
Claims (8)
1. The utility model provides a near-suction type range hood, includes casing (1), quick-witted case (2) and fan system (4) that are located casing (1) top, casing (1) are panel (14) that inclines with the horizontal direction including being located the front end, set up opening (141) on panel (14) and become the air intake of range hood, its characterized in that: the fan system (4) comprises a first ternary fan (41) and a second ternary fan (42) which are arranged in parallel, the fan system (4) is arranged in the case (2), a smoke blocking screen (15) is arranged on the front side of the panel (14), and the smoke blocking screen (15) is rotationally connected with the upper part of the panel (14), so that the smoke blocking screen (15) can rotate outwards to open an air inlet of the range hood or rotate inwards to close the air inlet of the range hood;
the smoke blocking device further comprises a driving mechanism (151) and a transmission mechanism (152) which are used for driving the smoke blocking screen (15) to act, wherein the driving mechanism (151) is arranged in the shell (1), the transmission mechanism (152) is connected with the smoke blocking screen (15), and the driving mechanism (151) drives the smoke blocking screen (15) to automatically open and close through the transmission mechanism (152);
the left side and the right side of the panel (14) are respectively provided with a through groove (1421), and the through grooves (1421) extend in the up-down direction; the transmission mechanism (152) comprises two groups of combinations consisting of a first connecting seat (1521), a second connecting seat (1522), a connecting rod (1523) and a support (1524), and the combinations are respectively arranged at the left side and the right side of the smoke shielding screen (15); in each group, one end of the first connecting seat (1521) is fixedly connected with one side of the smoke shielding screen (15) facing the inside of the shell (1), the other end of the first connecting seat is rotatably connected with one end of the connecting rod (1523), the other end of the connecting rod (1523) penetrates through the through groove (1421) to be rotatably connected with the support (1524), the support (1524) is fixedly arranged on the inner side of the panel (14) facing the inside of the shell (1), one end of the second connecting seat (1522) is fixedly connected with one side of the smoke shielding screen (15) facing the inside of the shell (1), the other end of the second connecting seat (1522) penetrates through the through groove (1421) to extend to the inner side of the panel (14), and the second connecting seat (1522) is positioned below the first connecting seat (1521); the driving mechanism (151) is used for driving one of the second connecting seats (1522) to act.
2. The near suction type range hood according to claim 1, wherein: the driving mechanism (151) is an electric push rod and is arranged on one side of the left side and the right side in the shell (1), the transmission mechanism (152) further comprises a transmission rod (1525), one end of one second connecting seat (1522) extending into the inner side of the panel (14) is rotationally connected with one end of the transmission rod (1525), and the other end of the transmission rod (1525) is connected with the output end of the driving mechanism (151).
3. The near suction type range hood according to claim 1 or 2, wherein: the first ternary fan (41) comprises a first ternary impeller (412) and a first air inlet (413), the second ternary fan (42) comprises a second ternary impeller (422) and a second air inlet (423), on the oil smoke flow path, the second air inlet (423) is identical to the first air inlet (413) in position, and the first air inlet (413) and the second air inlet (423) are arranged in parallel and respectively face the left side and the right side of the case (2).
4. A near suction range hood according to claim 3, wherein: the first ternary impeller (412) of the first ternary fan (41) and the second ternary impeller (422) of the second ternary fan (42) are respectively 60-90 degrees with the horizontal direction, and the two ternary impellers are inclined towards opposite directions.
5. A near suction range hood according to claim 3, wherein: the first ternary fan (41) further comprises a first volute (411), the first ternary impeller (412) is arranged in the first volute (411), the second ternary fan (42) further comprises a second volute (421), the second ternary fan (422) is arranged in the second volute (421), the first volute (411) and the second volute (421) are arranged at intervals and side by side, the first air inlet (413) is formed in the first volute (411), the second air inlet (423) is formed in the second volute (421), a first oil smoke channel (441) is formed in the first volute (411), a first air outlet (414) is formed in the top end of the first oil smoke channel (441), a second oil smoke channel (442) is formed in the second volute (421), and a second air outlet (424) is formed in the top end of the second oil smoke channel (442).
6. A near suction range hood according to claim 3, wherein: the first ternary impeller (412) and the second ternary impeller (422) are arranged at intervals and side by side in the same volute (44), a first air inlet (413) corresponding to the first ternary impeller (412) and a second air inlet (423) corresponding to the second ternary impeller (422) are respectively formed on two opposite sides of the volute (44), a mounting plate (45) is arranged between the first ternary impeller (412) and the second ternary impeller (422), the mounting plate (45) extends to the top end of the volute (44), so that the volute (44) is internally divided into two independent first oil smoke channels (441) and second oil smoke channels (442), the top end of each first oil smoke channel (441) forms a first air outlet (414), and the top end of each second oil smoke channel (442) forms a second air outlet (424).
7. The near suction type range hood according to claim 5 or 6, wherein: the motor (43) is arranged between the first ternary impeller (412) and the second ternary impeller (422), and the motor (43) is provided with double output shafts for driving the first ternary impeller (412) and the second ternary impeller (422) respectively.
8. The near suction type range hood according to claim 5 or 6, wherein: an air outlet cover (5) is arranged at an air outlet of the fan system (4), the air outlet cover (5) comprises a cover body (51) which is hollow and cylindrical, the cover body (51) is provided with a first end (511) and a second end (512) which are opposite and open, the caliber of the first end (511) is larger than that of the second end (512), a first guide plate (521) and a second guide plate (522) are arranged in the cover body (51), each guide plate extends from the first end (511) to the second end (512) of the cover body (51), a first diffusion flow channel (531) is formed between the first guide plate (521) and the inner side wall of the cover body (51), a second flow channel (532) is formed between the second guide plate (522) and the inner side wall of the cover body (51), the diffusion sectional areas of the first diffusion flow channel (531) and the second diffusion flow channel (532) are gradually reduced from the first end (511) to the second end (512) of the cover body (51) respectively, the diffusion sectional areas of the first diffusion flow channel (531) and the inner side wall of the first diffusion channel (51) are correspondingly reduced from the first end (511) to the second end (512) of the fan, the second diffusion flow passage (532) corresponds to the second air outlet (424) of the second ternary fan (42) at the first end (511) of the cover body (51).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710924462.6A CN109595645B (en) | 2017-09-30 | 2017-09-30 | Near-suction type range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710924462.6A CN109595645B (en) | 2017-09-30 | 2017-09-30 | Near-suction type range hood |
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| Publication Number | Publication Date |
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| CN109595645A CN109595645A (en) | 2019-04-09 |
| CN109595645B true CN109595645B (en) | 2024-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710924462.6A Active CN109595645B (en) | 2017-09-30 | 2017-09-30 | Near-suction type range hood |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US11428419B2 (en) * | 2020-07-28 | 2022-08-30 | Whirlpool Corporation | Vent hood assembly |
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| CN205807568U (en) * | 2016-06-27 | 2016-12-14 | 中山市和美电器燃具有限公司 | The pressurized construction of range hood |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0940633A2 (en) * | 1998-03-05 | 1999-09-08 | BSH Bosch und Siemens Hausgeräte GmbH | Extraction hood for kitchens |
| KR20050048050A (en) * | 2003-11-18 | 2005-05-24 | 주식회사 엔텍 | Range-hood |
| EP1679475A1 (en) * | 2004-12-21 | 2006-07-12 | Miele & Cie. KG | Extractor hood for mounting near to a wall |
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|---|---|
| CN109595645A (en) | 2019-04-09 |
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