Range hood

Abstract

The utility model discloses a range hood which comprises an exhaust fume collecting hood, a fan frame arranged on the exhaust fume collecting hood and a connecting hose enabling fluid communication between the exhaust fume collecting hood and the fan frame, and the connecting hose is connected between the exhaust fume collecting hood and the fan frame. The range hood further comprises a movement mechanism capable of enabling the exhaust fume collecting hood to ascend and descend relative to the fan frame and rotate around a rotating axis extending in the front-back direction. Compared with the prior art, the range hood has the advantages that the moving mechanism is arranged, so that the exhaust fume collecting hood rotates and ascends and descends around the rotating axis extending in the front-back direction relative to the fan frame, a negative pressure area is closer to a fume source through ascending and descending, and the position of the negative pressure area can be changed by rotating around the rotating axis extending in the front-back direction; the single-side smoke suction effect is improved, so that during single-side stir-frying cooking, the same side of the corresponding range hood can greatly improve the oil smoke suction effect and reduce oil smoke escape, the application scene is expanded, and the good oil smoke suction effect can be achieved in various scenes.

Description

Technical Field

[0001] The utility model relates to an oil fume purification device, in particular to an oil fume extractor. Background Art

[0002] A range hood is a kitchen appliance that purifies the kitchen environment. It can quickly extract stove burnt waste and fumes generated during cooking and discharge them outdoors, reducing pollution and purifying the air.

[0003] The position of the smoke hood of a common range hood is usually fixed, which means that the negative pressure range of the smoke collection of the range hood is usually fixed. If the air inlet of the range hood is far away from the source of the oil smoke, the path of the oil smoke rising is long, and the oil smoke is easy to escape during the cooking process. If the height of the smoke hood of the range hood is lowered, the smoke inlet can be as close to the smoke source as possible, so that the negative pressure can be expanded downward. Although it is beneficial to the oil smoke extraction effect, it will cause the cooking operation space to be too small, affecting the cooking line of sight and the overall appearance of the kitchen.

[0004] To this end, the common method is to make the height of the fume hood adjustable so that the air inlet is in the best position. For example, the Chinese utility model patent with application number 201010168338.X discloses a lifting transparent fume hood and range hood, which includes a fan, a retractable air duct, a fume hood and a control device thereof. The top of the fume hood is connected to the lifting control device, the retractable air duct is a sleeve structure, or a bellows hose, and the lifting control device is automatically controlled by a motor or a manual pulley. In this way, the height of the fume hood can be adjusted according to the amount of oil smoke. When there is no oil smoke, the position of the fume hood is pushed up, so that the cooking space is large and the operation is convenient; when the amount of oil smoke is large during frying, the position of the fume hood is pulled down.

[0005] However, the burners of household stoves are usually divided into left and right parts. Sometimes only one burner is used in home cooking, and sometimes both burners are used at the same time. When stir-frying is done on the left or right side, the amount of oil smoke generated by stir-frying is large and diffuses quickly. For a simply lifting range hood, some of the oil smoke is still easy to escape from the negative pressure zone of the cage, which will cause the oil smoke to escape to both sides of the smoke hood. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a range hood to expand the application scenarios and improve the range hood extraction effect in multiple scenarios in view of the deficiencies in the above-mentioned prior art.

[0007] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: a range hood, including a smoke hood, a fan frame arranged on the smoke hood, and a connecting hose that enables fluid communication between the smoke hood and the fan frame, wherein the connecting hose is connected between the smoke hood and the fan frame, and is characterized in that: the range hood also includes a motion mechanism that can lift and lower the smoke hood relative to the fan frame and rotate it around a rotation axis extending in the front-to-back direction.

[0008] By setting up a motion mechanism, the smoke collecting hood can be rotated and raised and lowered relative to the fan frame around the rotation axis extending in the front-to-back direction. The lifting and lowering can make the negative pressure zone closer to the smoke source, and the rotation around the rotation axis extending in the front-to-back direction can change the position of the negative pressure zone, thereby improving the single-sided smoke extraction effect. This solves the problem of single-sided stir-frying cooking. The same side of the corresponding range hood can greatly improve the oil fume extraction effect and reduce oil fume escape, thereby expanding the application scenarios and achieving better oil fume extraction effects in a variety of scenarios.

[0009] In order to enable the smoke hood to be flipped, tilted and lifted to the left and right directions relative to the fan frame, the motion mechanism includes a linear drive module assembly, the linear drive module assembly includes a first linear drive module and a second linear drive module respectively arranged on the left and right sides of the fan frame, the first linear drive module includes a first body and a first output end that can be extended and retracted relative to the first body, the second linear drive module includes a second body and a second output end that can be extended and retracted relative to the second body, the first body and the second body are respectively arranged on the left and right sides of the fan frame, the first output end and the second output end are directly or indirectly connected to the smoke hood for rotation, and the rotation axis of the first output end and the second output end relative to the smoke hood extends in the front-to-back direction.

[0010] In order to make the smoke hood obtain a larger flip angle in the left and right directions, the first body and the second body are flipped and rotatably connected to the left and right sides of the fan frame respectively, and the rotation axis of the first body and the second body relative to the fan frame extends in the front and rear directions.

[0011] In order to realize the connection between the linear drive module assembly and the smoke hood and increase the stability of the smoke hood rotating around the axis in the front-to-back direction, the motion mechanism also includes a first fork rod and a second fork rod, the first fork rod is arranged corresponding to the first linear drive module, and the second fork rod is arranged corresponding to the second linear drive module, the two ends of the first fork rod are respectively rotatably connected to the front and rear sides of the smoke hood, and the two ends of the first fork rod are extended in the front-to-back direction relative to the rotation axis of the smoke hood, the main body part between the two ends of the first fork rod is connected to the first output end, and the two ends of the second fork rod are respectively rotatably connected to the front and rear sides of the smoke hood, and the two ends of the second fork rod are extended in the front-to-back direction relative to the rotation axis of the smoke hood, and the main body part between the two ends of the second fork rod is connected to the second output end.

[0012] Furthermore, in order to make the smoke hood adaptable to many scenarios, the main body part between the two ends of the first fork rod is rotatably connected to the first output end, and the rotation axis of the first fork rod and the first output end extends in the left and right directions. The main body part between the two ends of the second fork rod is rotatably connected to the first output end, and the rotation axis of the second fork rod and the first output end extends in the left and right directions, thereby allowing the smoke hood to rotate around the axis extending to the left and right.

[0013] To facilitate the rotation of the smoke hood around an axis extending left and right, the movement mechanism also includes a first rotating shaft arranged on the first fork rod and rotatably connected to the first output end, and a second rotating shaft arranged on the second fork rod and rotatably connected to the second output end. The rotation axis of the first rotating shaft relative to the first output end extends in the left and right direction, and the rotation axis of the second rotating shaft relative to the second output end extends in the left and right direction.

[0014] In order to facilitate automatic driving of the smoke hood to rotate around an axis extending left and right, the movement mechanism also includes a driving device capable of driving the first fork rod and the second fork rod to rotate around a rotation axis extending in the left and right directions, the driving device is at least arranged on one of the first output end and the second output end, and the driving device includes an output shaft, and the output shaft is connected to the rotation axis of the fork rod on the corresponding side. Further, in order to increase the movement stability of the smoke hood, the movement mechanism also includes a connecting member that allows the left and right sides of the smoke hood to be synchronously stressed when the smoke hood rotates around the rotation axis extending in the left and right directions, and the connecting member is arranged between the first rotation axis and the second rotation axis.

[0015] Preferably, the structure of the connecting piece is that the connecting piece includes a first telescopic rod, a second telescopic rod and a ring, the ring is sleeved on the outside of the connecting hose, the first telescopic rod and the second telescopic rod are respectively arranged on the left and right sides of the ring, the first telescopic rod includes a third body and a third output end capable of telescoping relative to the third body, the third body is rotatably connected to the first rotating shaft, the rotation axis of the third body rotating relative to the first rotating shaft extends in the front-to-back direction, the third output end is connected to the left side of the ring, the second telescopic rod includes a fourth body and a fourth output end capable of telescoping relative to the fourth body, the fourth body is rotatably connected to the second rotating shaft, the rotation axis of the fourth body rotating relative to the second rotating shaft extends in the front-to-back direction, and the fourth output end is connected to the right side of the ring.

[0016] Preferably, in order to facilitate the connection between each fork rod and the front and rear sides of the smoke collecting hood, the first fork rod and the second fork rod are both U-shaped with the opening downward.

[0017] Compared with the prior art, the utility model has the advantages that: by setting a motion mechanism, the smoke hood can rotate and rise and fall relative to the fan frame around the rotation axis extending in the front-to-back direction, and the lifting and falling can make the negative pressure area closer to the smoke source, and the rotation around the rotation axis extending in the front-to-back direction can change the position of the negative pressure area, improve the single-sided smoking effect, so as to solve the problem that when cooking with frying on one side, the same side of the corresponding range hood can greatly improve the oil fume suction effect and reduce the escape of oil fume, thereby expanding the application scenarios, so that it can achieve a good oil fume suction effect in a variety of scenarios. The motion mechanism can also realize the rotation of the smoke hood around the axis extending left and right, so as to cope with more cooking scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of a range hood according to an embodiment of the utility model;

[0019] Figure 2 A schematic diagram of the movement mechanism of the range hood according to an embodiment of the utility model;

[0020] Figure 3 A schematic diagram of the initial state of the range hood according to an embodiment of the utility model;

[0021] Figure 4 A schematic diagram of the lifting and lowering of the smoke collecting hood of the range hood according to an embodiment of the utility model;

[0022] Figure 5 It is a schematic diagram of the smoke collecting hood of the range hood according to the embodiment of the utility model rotating around the rotation axis extending forward and backward;

[0023] Figure 6 It is a schematic diagram of the smoke collecting hood of the range hood according to the embodiment of the utility model rotating around the rotation axis extending left and right. DETAILED DESCRIPTION

[0024] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0025] See also Figure 1 A range hood includes a fume hood 1, a fan frame 2 disposed on the fume hood 1, and a connecting hose 3 disposed between the fume hood 1 and the fan frame 2. The connecting hose 3 is used to achieve fluid communication between the fume hood 1 and the fan frame 2, and the connecting hose 3 can be extended or compressed. An air inlet 11 is provided at the bottom of the fume hood 1.

[0026] See also Figure 3 to Figure 5 The range hood further comprises a motion mechanism, which can rotate the fume hood 1 relative to the fan frame 2 around a rotation axis extending forward and backward, and can also lift the fume hood 1 relative to the fan frame 2.

[0027] See also Figure 2 and Figure 5 The motion mechanism includes a linear drive module assembly, and the linear drive module assembly includes a first linear drive module and a second linear drive module respectively arranged on the left and right sides of the fan frame 2. The first linear drive module includes a first body 31 and a first output end 32 that can be extended and retracted relative to the first body 31. The second linear drive module includes a second body 33 and a second output end 34 that can be extended and retracted relative to the second body 33. The first body 31 and the second body 33 are respectively arranged on the left and right sides of the fan frame 2, and the first output end 32 and the second output end 34 are directly or indirectly connected to the smoke hood 1 for rotation, and the rotation axis of the first output end 32 and the second output end 34 relative to the smoke hood 1 extends in the front-to-back direction. In order to obtain a larger flipping angle, the first body 31 and the second body 33 are respectively connected to the left and right sides of the fan frame 2 for rotation, and the rotation axis of the first body 31 and the second body relative to the fan frame 2 extends in the front-to-back direction.

[0028] When the first output end 32 of the first linear drive module and the second output end 34 of the second linear drive module are extended by the same distance at the same time, the position of the smoke hood 1 moves downward, thereby shortening the distance between the air inlet 11 and the stove top, achieving negative pressure downward expansion, and improving the oil fume absorption effect. The descending distance can be adjusted by the cook according to the size of the cooking pot and the appropriate cooking operation space for the cook, by triggering a button or the like.

[0029] See also Figure 5 When cooking on one side (such as the left side) and the amount of cooking oil smoke is large, the first output end 32 of the first linear drive module can be contracted or lowered by a short distance, and the second output end 34 of the second linear drive module can be extended or extended by a large distance, so that the smoke hood 1 can be rotated and tilted toward the left side, and the negative pressure on the left side moves downward. At this time, the air inlet 11 is changed from top suction to side suction. In this state, a better suction effect can be achieved for cooking on one side, so as to solve the problem that when cooking on one side, the corresponding range hood on the same side can greatly improve the oil smoke suction effect and reduce the escape of oil smoke. At the same time, it can meet the requirements of cooking higher pots on one side and not blocking the line of sight.

[0030] To adapt to more cooking scenarios, see Figure 1 to Figure 6The motion mechanism further includes a first fork rod 35 and a second fork rod 36. The first fork rod 35 is arranged corresponding to the first linear drive module, and the second fork rod 36 is arranged corresponding to the second linear drive module. The first fork rod 35 and the second fork rod 36 are both in a U-shape with the opening facing downward. The two ends of the first fork rod 35 are respectively connected to the front and rear sides of the smoke hood 1 for rotation, and the two ends of the first fork rod 35 rotate relative to the smoke hood 1. The rotation axis of the two ends of the first fork rod 35 rotate relative to the smoke hood 1 extends in the front and rear direction. The body part between the two ends of the first fork rod 35 is connected to the first output end 32. The two ends of the second fork rod 36 are respectively connected to the front and rear sides of the smoke hood 1 for rotation, and the two ends of the second fork rod 36 rotate relative to the smoke hood 1. The rotation axis of the two ends of the second fork rod 36 rotate relative to the smoke hood 1 extends in the front and rear direction, and the body part between the two ends of the second fork rod 36 is connected to the second output end 34. As a result, it is convenient for the smoke hood 1 to rotate relative to the two fork rods around the rotation axis extending forward and backward. In addition, through the connection of the fork rods to the front and rear sides of the smoke hood 1, the smoke hood 1 can run more smoothly when lifting.

[0031] The main body between the two ends of the first fork rod 35 is rotatably connected to the first output end 32, and the rotation axis of the first fork rod 35 relative to the first output end 32 extends in the left-right direction. The main body between the two ends of the second fork rod 36 is rotatably connected to the first output end 32, and the rotation axis of the second fork rod 36 relative to the first output end 32 extends in the left-right direction. The first fork rod 35 is provided with a first rotating shaft 351 rotatably connected to the first output end 32, and the second fork rod 36 is provided with a second rotating shaft 361 rotatably connected to the second output end 34. The rotation axis of the first rotating shaft 351 relative to the first output end 32 extends in the left-right direction, and the rotation axis of the second rotating shaft 361 relative to the second output end 34 extends in the left-right direction. Thus, each fork rod can rotate around the rotation axis extending in the left-right direction to drive the smoke hood 1 to rotate relative to the fan frame 2 around the rotation axis extending in the left-right direction.

[0032] The motion mechanism also includes a connecting member that allows the left and right sides of the smoke hood 1 to be synchronously stressed when the smoke hood 1 rotates around a rotation axis extending in the left and right directions. The connecting member is arranged between the first rotating shaft 351 and the second rotating shaft 361. The connecting member includes a first telescopic rod 37, a second telescopic rod 38 and a collar 39. The collar 39 is sleeved on the outside of the connecting hose 3, and the first telescopic rod 37 and the second telescopic rod 38 are respectively arranged on the left and right sides of the collar 39. The first telescopic rod 37 includes a third body 371 and a third output end 372 that can be telescoped relative to the third body 371. The third body 371 is rotatably connected to the first rotating shaft 351. The rotation axis of the third body 371 relative to the first rotating shaft 351 extends in the front-to-back direction. The third output end 372 is connected to the left side of the collar 39. The second telescopic rod 38 includes a fourth body 381 and a fourth output end 382 that can be telescoped relative to the fourth body 381. The fourth body 381 is rotatably connected to the second rotating shaft 361. The rotation axis of the fourth body 381 relative to the second rotating shaft 361 extends in the front-to-back direction. The fourth output end 382 is connected to the right side of the ring 39.

[0033] The motion mechanism also includes a driving device 310 capable of driving the first fork rod 35 and the second fork rod 36 to rotate around a rotation axis extending in the left-right direction. The driving device 310 is at least arranged on one of the first output end 32 and the second output end 34. The driving device 310 includes an output shaft, and the output shaft is connected to the rotation axis of the fork rod on the corresponding side. In this embodiment, the driving device 310 is a motor, which is arranged on the second output end 34. The output shaft of the driving device 310 is transmission-connected to the second rotation shaft 361. The second rotation shaft 361 is driven to rotate by the output shaft, thereby driving the entire connecting member and the two fork rods to rotate, so as to realize the rotation of the smoke hood 1 around the rotation axis extending in the left-right direction, so as to cope with more cooking scenarios. Figure 6 As shown in , the range hood is changed from top suction type to side suction type, the negative pressure is closer to the smoke source, and the range hood extraction effect is better.

[0034] In the utility model, the moving mechanism is arranged outside the passage through which the oil smoke passes, and will not be affected by oil stains and airflow, has a longer service life and is easy to maintain (it can be maintained without removing the components constituting the oil smoke passage).

Claims

1. A range hood, comprising a fume hood (1), a fan frame (2) arranged on the fume hood (1), and a connecting hose (3) for fluid communication between the fume hood (1) and the fan frame (2), wherein the connecting hose (3) is connected between the fume hood (1) and the fan frame (2), and characterized in that: The range hood further comprises a movement mechanism capable of enabling the fume hood (1) to be raised or lowered relative to the fan frame (2) and to be rotated around a rotation axis extending in the front-rear direction.

2. The range hood according to claim 1, characterized in that: The motion mechanism comprises a linear drive module assembly, wherein the linear drive module assembly comprises a first linear drive module and a second linear drive module respectively arranged on the left and right sides of the fan frame (2), wherein the first linear drive module comprises a first body (31) and a first output end (32) capable of being extended and retracted relative to the first body (31), and the second linear drive module comprises a second body (33) and a second output end (34) capable of being extended and retracted relative to the second body (33), wherein the first body (31) and the second body (33) are respectively arranged on the left and right sides of the fan frame (2), wherein the first output end (32) and the second output end (34) are directly or indirectly connected to the smoke hood (1) for rotation, and wherein the rotation axis of the first output end (32) and the second output end (34) relative to the smoke hood (1) extends in the front-rear direction.

3. The range hood according to claim 2, characterized in that: The first body (31) and the second body (33) are rotatably connected to the left and right sides of the fan frame (2) respectively, and the rotation axis of the first body (31) and the second body (33) relative to the fan frame (2) extends in the front-rear direction.

4. The range hood according to claim 2, characterized in that: The motion mechanism further comprises a first fork rod (35) and a second fork rod (36), wherein the first fork rod (35) is arranged corresponding to the first linear drive module, and the second fork rod (36) is arranged corresponding to the second linear drive module, and the two ends of the first fork rod (35) are respectively rotatably connected to the front and rear sides of the smoke hood (1), and the rotation axes of the two ends of the first fork rod (35) relative to the smoke hood (1) extend in the front-to-back direction, and the main body between the two ends of the first fork rod (35) is connected to the first output end (32), and the two ends of the second fork rod (36) are respectively rotatably connected to the front and rear sides of the smoke hood (1), and the rotation axes of the two ends of the second fork rod (36) relative to the smoke hood (1) extend in the front-to-back direction, and the main body between the two ends of the second fork rod (36) is connected to the second output end (34).

5. The range hood according to claim 4, characterized in that: The main body portion between the two ends of the first fork rod (35) is rotatably connected to the first output end (32), and the rotation axis of the first fork rod (35) relative to the first output end (32) extends in the left-right direction. The main body portion between the two ends of the second fork rod (36) is rotatably connected to the first output end (32), and the rotation axis of the second fork rod (36) relative to the first output end (32) extends in the left-right direction.

6. The range hood according to claim 5, characterized in that: The motion mechanism further comprises a first rotating shaft (351) arranged on the first fork rod (35) and rotatably connected to the first output end (32), and a second rotating shaft (361) arranged on the second fork rod (36) and rotatably connected to the second output end (34), wherein the rotation axis of the first rotating shaft (351) relative to the first output end (32) extends in the left-right direction, and the rotation axis of the second rotating shaft (361) relative to the second output end (34) extends in the left-right direction.

7. The range hood according to claim 6, characterized in that: The motion mechanism also includes a driving device (310) capable of driving the first fork rod (35) and the second fork rod (36) to rotate around a rotation axis extending in the left-right direction. The driving device (310) is at least arranged on one of the first output end (32) and the second output end (34). The driving device (310) includes an output shaft, and the output shaft is drivingly connected to the rotation shaft of the fork rod on the corresponding side.

8. The range hood according to claim 6, characterized in that: The movement mechanism further comprises a connecting member which enables the left and right sides of the smoke collecting hood (1) to be subjected to force synchronously when the smoke collecting hood (1) rotates around a rotation axis extending in the left and right directions, and the connecting member is arranged between the first rotating shaft (351) and the second rotating shaft (361).

9. The range hood according to claim 8, characterized in that: The connecting member comprises a first telescopic rod (37), a second telescopic rod (38) and a collar (39); the collar (39) is sleeved on the outside of the connecting hose (3); the first telescopic rod (37) and the second telescopic rod (38) are respectively arranged on the left and right sides of the collar (39); the first telescopic rod (37) comprises a third body (371) and a third output end (372) capable of being telescoped relative to the third body (371); the third body (371) is rotatably connected to the first rotating shaft (351); the third body (371) is rotatably connected to the first rotating shaft (351); the third body (371) is rotatably connected to the third ... The rotation axis of a rotating shaft (351) extends in the front-to-back direction, the third output end (372) is connected to the left side of the collar (39), the second telescopic rod (38) includes a fourth body (381) and a fourth output end (382) that can be telescoped relative to the fourth body (381), the fourth body (381) is rotationally connected to the second rotating shaft (361), the rotation axis of the fourth body (381) relative to the second rotating shaft (361) extends in the front-to-back direction, and the fourth output end (382) is connected to the right side of the collar (39).

10. The range hood according to claim 4, characterized in that: The first fork rod (35) and the second fork rod (36) are both U-shaped with an opening downward.

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