Range hood and mounting structure thereof

Abstract

The utility model relates to a range hood and a mounting structure thereof, the range hood comprises an outer box body and a fan frame, and further comprises a lifting body which does lifting motion relative to the fan frame, the bottom of the lifting body is provided with a first air inlet, the front side part of the lifting body is provided with a second air inlet, and the bottom of the outer box body is provided with a smoke baffle which can be linked with the lifting body; and in the state that the lifting body is lifted to the highest position, the second air inlet is hidden in the outer box body, and the smoke baffle is turned over to close the first air inlet, and in the state that the lifting body is lowered to the lowest position, the second air inlet is exposed to the lower portion of the outer box body, and the smoke baffle is turned over to open the first air inlet. The smoke baffle of the range hood can synchronously turn over along with lifting of the lifting body, when the range hood is shut down and after the lifting body is lifted, the two air inlets are hidden, when the range hood is started and after the lifting body is lowered, the two air inlets work at the same time, the oil smoke suction effect is further improved, and the smoke gathering cavity of the lifting body is located below the cabinet body all the time; and the lifting body does not interfere with the cabinet body hinge in the lifting process.

Description

Technical Field

[0001] The utility model relates to kitchen household appliances, in particular to a range hood and a mounting structure thereof. Background Art

[0002] Chinese cooking produces a lot of oil smoke. To keep the kitchen environment clean and the human body healthy, the range hood has become one of the essential appliances in modern family kitchens. The height of the negative pressure zone of the range hood directly affects the oil smoke extraction effect. If the distance between the air inlet of the range hood and the oil smoke generating area is large, the oil smoke inhalation path is long, and the inhalation time increases, making it easy for oil smoke to escape during cooking. If the installation height of the range hood is lowered, although it is beneficial to improve the oil smoke extraction effect, it will cause the cooking space to be too small, and the cook's head is easy to accidentally touch the smoke hood. In addition, after the installation height is lowered, it also affects the line of sight and the overall appearance of the kitchen. For this purpose, people have invented a lifting range hood, such as the Chinese invention patent application with application number 201310136828.5 (authorization announcement number CN 104101010A) entitled "A range hood with a smoke collecting chamber that can be manually lifted and lowered". The range hood is provided with a movable smoke collecting chamber that can be lifted and lowered at the rear of the inner cavity of the casing, the top of the movable smoke collecting chamber is connected to the lower end of the lifter, the upper end of the lifter is fixed to a reinforcing rib of the casing, and the range hood is controlled by a control panel to arbitrarily adjust the height of the smoke collecting chamber of the range hood during cooking to achieve the best smoking effect. Another example is the "A Lifting Range Hood" disclosed in the Chinese utility model patent No. 201320075819.5 (authorization announcement No. CN203215771U). The lifting range hood has a flat ultra-thin smoke hood installed at the bottom of the range hood body, and the front of the smoke hood has a main smoke inlet. A lifting mechanism is also provided in the body to drive the smoke hood to move up and down. When in use, the smoke hood is lowered to absorb the smoke. When not in use, the smoke hood is raised to hide in the range hood body. Although the above-mentioned lifting range hood can lift the smoke collecting component as needed, it essentially only adjusts the upper and lower positions of the air inlet, and does not improve the air inlet structure of the range hood. The smoke absorbing effect needs to be further improved.

[0003] In addition, some lift-type range hoods use a single motion form of flipping the smoke baffle or moving the smoke collecting chamber up and down. The flipping of the smoke baffle and the lifting of the smoke collecting chamber are driven by independent driving mechanisms. On the one hand, the cost is high. On the other hand, the increase in the number of lifting mechanisms will inevitably occupy too much internal space of the range hood, and it is also easy to cause motion interference with other components inside the range hood, which is not conducive to the reasonable spatial arrangement of other components inside the range hood. In addition, when installing existing lift-type range hoods, if they are enclosed in a cabinet, it is necessary to consider the interference between the lifting body and the cabinet door hinge, which increases the design difficulty. Utility Model Content

[0004] The first technical problem to be solved by the utility model is to provide a range hood with good fume absorbing effect, in view of the above-mentioned existing technical status, in which the upper and lower air inlets can work synchronously.

[0005] The second technical problem to be solved by the present invention is to provide a mounting structure of a range hood which is not easy to interfere with a cabinet during the lifting process of the range hood in view of the above-mentioned existing technical status.

[0006] The technical solution adopted by the utility model to solve the first technical problem mentioned above is: a range hood, comprising an outer box body and a fan frame arranged inside the outer box body, and also comprising a lifting body that performs lifting and lowering movement relative to the fan frame under the drive of a driving mechanism, characterized in that: the bottom of the lifting body has a first air inlet, the front side of the lifting body has a second air inlet, and a smoke shield that can be linked with the lifting body is installed at the bottom of the outer box body. When the lifting body is raised to the highest position, the second air inlet is hidden inside the outer box body and the smoke shield is flipped to close the first air inlet. When the lifting body is lowered to the lowest position, the second air inlet is exposed below the outer box body and the smoke shield is flipped to open the first air inlet.

[0007] The lifting body may have multiple structures. Preferably, the lifting body includes a connecting frame and a smoke collecting chamber provided at the bottom of the connecting frame, the driving output end of the driving mechanism is connected to the connecting frame, and the first air inlet and the second air inlet are provided on the smoke collecting chamber. With such an arrangement, the first air inlet and the second air inlet can be raised and lowered synchronously with the lifting body.

[0008] The driving mechanism can have a variety of structures. Preferably, the driving mechanism includes a motor, a screw and a screw nut assembly, the screw is arranged vertically, the upper end of the screw is mounted on the output shaft of the motor, the screw nut assembly is mounted on the screw, and the connecting frame is fixed on the screw nut assembly. With such an arrangement, the lifting body can be driven to perform lifting motion under the drive of the motor.

[0009] In order to make the lifting body move more smoothly, the motor is installed on the top of the fan frame, the screw rod is arranged on the back of the fan frame and is arranged in the middle of the left and right sides, a guide rail is installed on the outer wall of the fan frame, and the connecting frame is slidably connected to the fan frame through the guide rail.

[0010] Further preferably, the smoke collecting chamber includes an upper smoke collecting portion and a lower smoke collecting portion, the first air inlet is arranged on the lower smoke collecting portion, and the second air inlet is arranged on the upper smoke collecting portion. In this arrangement, the first air inlet is the lower air inlet, and the second air inlet is the upper air inlet.

[0011] Further preferably, the lower smoke collecting portion has an air inlet surface extending obliquely downward from the front to the rear, the first air inlet is formed on the air inlet surface, and the upper smoke collecting portion has a vertically arranged front side wall, the second air inlet is opened on the front side wall. In this arrangement, the first air inlet constitutes a main air inlet, and the second air inlet constitutes an auxiliary air inlet.

[0012] Further preferably, the outer box body includes an upper box body and a lower box body arranged at the bottom of the lower box body, the fan frame is arranged inside the upper box body, and a space for accommodating the connecting frame is formed between the fan frame and the upper box body, and when the lifting body is raised to the highest position, the upper smoke collecting part is hidden inside the lower box body, and the lower smoke collecting part is exposed below the lower box body, and when the lifting body is lowered to the lowest position, the upper smoke collecting part extends downward as a whole to the bottom of the lower box body.

[0013] In order to enable the smoke barrier to be linked with the lifting body, preferably, the front edge of the smoke barrier is rotatably connected to the bottom of the lower box body, hinge brackets are installed on the left and right sides of the smoke collecting chamber, and the back of the smoke barrier is connected to the hinge bracket by a hinge. The lifting body drives the smoke barrier to flip synchronously through the hinge during the lifting process.

[0014] In order to enable the hinge to drive the smoke shield to flip, preferably, a smoke shield bracket is installed on the back of the smoke shield, one end of the hinge is rotatably connected to the smoke shield bracket, and the other end of the hinge is rotatably connected to the hinge bracket.

[0015] In order to enable the smoke shield to rotate relative to the outer box body, a rotating shaft bracket is installed at the front bottom of the outer box body, and a decorative strip is installed at the front edge of the smoke shield. The decorative strip is rotatably connected to the rotating shaft bracket through a rotating shaft.

[0016] The technical solution adopted by the utility model to solve the above-mentioned second technical problem is: a range hood installation structure, characterized in that it includes a cabinet installed on a wall, and also includes the range hood, the upper box body of the range hood is hidden inside the cabinet body, and the lower box body is exposed below the cabinet body.

[0017] Compared with the existing design, the advantages of the utility model are: the range hood has a lifting body which can be raised and lowered relative to the fan frame, the smoke baffle can be flipped synchronously with the lifting of the lifting body, the lifting body adopts a double air inlet structure, when the machine is turned off, the two air inlets are hidden after the lifting body is raised, and when the machine is turned on, the two air inlets work simultaneously after the lifting body is lowered, thereby improving the oil fume extraction effect; when the range hood is installed, the lower box body of the range hood is exposed under the cabinet, and the smoke collecting chamber of the lifting body is always located under the cabinet, so that the lifting body will not interfere with the cabinet hinge during the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the range hood according to an embodiment of the utility model (in shutdown state);

[0019] Figure 2 for Figure 1 The schematic diagram of the internal structure of the range hood shown;

[0020] Figure 3 This is a schematic diagram of the structure of the lifting body of an embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the range hood according to an embodiment of the utility model (in the powered-on state);

[0022] Figure 5 for Figure 4 A schematic structural diagram of the range hood from another angle;

[0023] Figure 6 for Figure 4 The schematic diagram of the internal structure of the range hood shown;

[0024] Figure 7 This is a schematic diagram of the installation structure of the driving mechanism of an embodiment of the utility model;

[0025] Figure 8 This is a schematic diagram of the installation structure of the range hood according to an embodiment of the utility model (in the shutdown state);

[0026] Fig. 9 This is a schematic diagram of the installation structure of the range hood according to an embodiment of the utility model (in the powered-on state). DETAILED DESCRIPTION

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0028] like Figures 1 to 9 As shown, the range hood of this embodiment includes main components such as an outer box body 1, a fan frame 2, a lifting body 3, a driving mechanism 4, a smoke baffle 5, a hinge bracket 6, a hinge 7, a rotating shaft bracket 8, and a rotating shaft 9.

[0029] The outer box 1 includes an upper box 11 and a lower box 12, and the fan rack 2 is installed inside the upper box 11. A fan system (not shown) is installed inside the fan rack 2. Figure 3As shown, the lifting body 3 of this embodiment includes a connecting frame 31 and a smoke collecting chamber 32 arranged at the bottom of the connecting frame 31. The connecting frame 3 is accommodated in the space between the fan frame 2 and the upper box body 11, and the connecting frame 3 is connected to the driving output end of the driving mechanism 4. The smoke collecting chamber 32 includes an upper smoke collecting portion 321 and a lower smoke collecting portion 322, the lower smoke collecting portion 322 has an air inlet surface extending obliquely downward from front to back, and a first air inlet 33 is formed on the air inlet surface, the upper smoke collecting portion 321 has a vertically arranged front side wall, and a second air inlet 34 is opened on the front side wall, that is, the first air inlet 33 is arranged at the bottom of the lifting body 3, the second air inlet 34 is arranged at the front side of the lifting body 3, and the first air inlet and the second air inlet 34 are arranged above and in front of the first air inlet 33. Driven by the driving mechanism 4, the lifting body 3 performs a lifting movement, so that the first air inlet 33 and the second air inlet 34 are lifted and lowered synchronously.

[0030] Combination Figure 7 As shown, the driving mechanism 4 of this embodiment includes a motor 41, a screw rod 42 and a screw rod nut assembly 43. The motor 41 is installed on the top of the fan frame 2. The screw rod 42 is vertically arranged on the back of the fan frame 2 and is arranged in the middle of the left and right sides. The upper end of the screw rod 42 is installed on the output shaft of the motor 41. The screw rod nut assembly 43 is installed on the screw rod 42. The connecting frame 31 is fixed on the screw rod nut assembly 43. A guide rail 44 is installed on the outer wall of the fan frame 2. The guide rail 44 is arranged on the left and right sides of the fan frame 2. The connecting frame 31 is slidably connected to the fan frame 2 through the guide rail 44. Driven by the driving mechanism 4, the connecting frame 31 slides up and down relative to the fan frame 2 along the guide rail 44, and the movement is more stable.

[0031] The front edge of the smoke baffle 5 is rotatably connected to the bottom of the lower box body 12. Specifically, a rotating shaft bracket 8 is installed at the front bottom of the lower box body 12, and a decorative strip 52 is installed at the front edge of the smoke baffle 5. The decorative strip 52 is rotatably connected to the rotating shaft bracket 8 through a rotating shaft 9.

[0032] In this embodiment, the smoke shield 5 can also be turned synchronously with the lifting and lowering of the lifting body 3. Specifically, hinge brackets 6 are installed on both the left and right sides of the smoke collecting cavity 32, and smoke shield brackets 51 are installed on both the left and right sides of the back of the smoke shield 5. Correspondingly, there are two hinges 7, one end of the hinge 7 is rotatably connected to the smoke shield bracket 51 on the corresponding side, and the other end of the hinge 7 is rotatably connected to the hinge bracket 6 on the corresponding side. Therefore, the lifting body 3 drives the smoke shield 5 to turn synchronously through the hinge 7 during the lifting process.

[0033] like Figure 1 and Figure 2As shown, the range hood is in the off state, and the lifting body 3 is raised to the highest position. At this time, the upper smoke collecting portion 321 is hidden inside the lower box body 12, and the second air inlet 34 provided on the upper smoke collecting portion 32 is also hidden inside the lower box body 12. The lower smoke collecting portion 322 is exposed below the lower box body 12, and the smoke baffle 5 is in a position to close the first air inlet 33. Figure 4 and Figure 5 As shown, when the range hood is turned on, the lifting body 3 descends to the lowest position, at which time, the upper smoke collecting portion 321 extends downward as a whole to the bottom of the lower box 12, the second air inlet 34 is exposed below the lower box 12, the second air inlet 34 is opened, the smoke baffle 5 flips forward to the front side of the lifting body 3, and the smoke baffle 5 is arranged obliquely forward from top to bottom to expand the smoke collecting area, and the first air inlet 33 is opened. Since the first air inlet 33 and the second air inlet 34 are opened at the same time, the range hood extraction effect is improved.

[0034] like Figure 8 and Fig. 9 As shown, the cabinet 10 is installed on the wall 100. After the range hood is installed, the upper box 11 of the range hood is hidden inside the cabinet 10, and the lower box 12 is exposed below the cabinet 10. In the off state, the upper smoke collecting portion 321 of the lifting body 3 is arranged inside the lower box 12, and in the on state, the upper smoke collecting portion 321 is arranged below the lower box 12. It can be seen that during the lifting process of the range hood, the smoke collecting chamber 32 will not interfere with the cabinet hinge.

Claims

1. A range hood, comprising an outer box (1) and a fan frame (2) arranged inside the outer box (1), and also comprising a lifting body (3) driven by a driving mechanism (4) to perform lifting movement relative to the fan frame (2), characterized in that: The bottom of the lifting body (3) is provided with a first air inlet (33), the front side of the lifting body (3) is provided with a second air inlet (34), and a smoke shield (5) which can be linked with the lifting body (3) is installed at the bottom of the outer box (1); when the lifting body (3) is raised to the highest position, the second air inlet (34) is hidden inside the outer box (1) and the smoke shield (5) is flipped to close the first air inlet (33); when the lifting body (3) is lowered to the lowest position, the second air inlet (34) is exposed below the outer box (1) and the smoke shield (5) is flipped to open the first air inlet (33).

2. The range hood according to claim 1, characterized in that: The lifting body (3) comprises a connecting frame (31) and a smoke collecting chamber (32) arranged at the bottom of the connecting frame (31); the driving output end of the driving mechanism (4) is connected to the connecting frame (31); and the first air inlet (33) and the second air inlet (34) are arranged on the smoke collecting chamber (32).

3. The range hood according to claim 2, characterized in that: The smoke collecting chamber (32) comprises an upper smoke collecting portion (321) and a lower smoke collecting portion (322); the first air inlet (33) is arranged on the lower smoke collecting portion (322); and the second air inlet (34) is arranged on the upper smoke collecting portion (321).

4. The range hood according to claim 3, characterized in that: The lower smoke collecting portion (322) has an air inlet surface extending obliquely downward from front to rear, and the first air inlet port (33) is formed on the air inlet surface; the upper smoke collecting portion (321) has a vertically arranged front side wall, and the second air inlet port (34) is formed on the front side wall.

5. The range hood according to claim 3, characterized in that: The outer box body (1) comprises an upper box body (11) and a lower box body (12) arranged at the bottom of the lower box body (12); the fan frame (2) is arranged inside the upper box body (11); a space for accommodating the connecting frame (31) is formed between the fan frame (2) and the upper box body (11); when the lifting body (3) is raised to the highest position, the upper smoke collecting portion (321) is hidden inside the lower box body (12), and the lower smoke collecting portion (322) is exposed below the lower box body (12); when the lifting body (3) is lowered to the lowest position, the upper smoke collecting portion (321) as a whole extends downward to the bottom of the lower box body (12).

6. The range hood according to claim 2, characterized in that: The driving mechanism (4) comprises a motor (41), a screw rod (42) and a screw rod nut assembly (43); the screw rod (42) is arranged vertically, the upper end of the screw rod (42) is mounted on the output shaft of the motor (41), the screw rod nut assembly (43) is mounted on the screw rod (42), and the connecting frame (31) is fixed on the screw rod nut assembly (43).

7. The range hood according to any one of claims 2 to 6, characterized in that: The front edge of the smoke shield (5) is rotatably connected to the bottom of the outer box body (1), and hinge brackets (6) are installed on both the left and right sides of the smoke collecting chamber (32). The back of the smoke shield (5) is connected to the hinge bracket (6) via a hinge (7), and the lifting body (3) drives the smoke shield (5) to flip synchronously via the hinge (7) during the lifting process.

8. The range hood according to claim 7, characterized in that: A smoke shield bracket (51) is installed on the back of the smoke shield (5), one end of the hinge (7) is rotatably connected to the smoke shield bracket (51), and the other end of the hinge (7) is rotatably connected to the hinge bracket (6).

9. The range hood according to claim 7, characterized in that: A rotating shaft bracket (8) is installed at the front bottom of the outer box body (1), and a decorative strip (52) is installed at the front edge of the smoke baffle (5). The decorative strip (52) is rotatably connected to the rotating shaft bracket (8) via a rotating shaft (9).

10. A range hood installation structure, characterized in that: It comprises a cabinet (10) mounted on a wall, and also comprises a range hood as claimed in claim 5, wherein the upper box (11) of the range hood is hidden inside the cabinet (10), and the lower box (12) is exposed below the cabinet (10).

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