Range hood

Abstract

The present application relates to a kind of range hood, comprising: casing, with the front open smoke chamber;Panel, rotationally disposed in the front of the casing, and can open and close the front open of the smoke chamber;It further includes the air inlet assembly connected between the back of panel and the casing, the air inlet assembly includes air inlet plate, air deflector and the two side plates extending from the left and right sides of the back of panel towards the casing, the air inlet plate is provided with air inlet, in the open state of the panel, the air inlet plate, air deflector, left and right two side plates and panel then jointly define the air inlet chamber that is communicated with the smoke chamber.Air inlet chamber is more lower in negative pressure area, and air inlet is more smooth, and the effect of oil fume suction is better.On the other hand, the existence of the above negative pressure chamber can also weaken a part of pneumatic noise, while air inlet is relatively more lower than the position of existing air inlet, relatively more far from ear, and sensory noise is smaller, also improve the use experience of user.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of kitchen appliances, in particular to a range hood. BACKGROUND

[0002] The range hood is a kind of kitchen appliance for purifying the kitchen environment. The range hood generally includes a top suction type range hood and a near suction type range hood. The top suction type range hood is more beautiful, but its smoke inlet is relatively high, and the oil fume suction effect is limited. Compared with the top suction type range hood, the smoke inlet of the near suction type range hood is relatively low. However, due to the influence of the external structure and the internal air duct structure of the near suction type range hood, the current near suction type range hood cannot better approach the oil fume, which greatly limits the oil fume suction effect.

[0003] In order to meet the light and thin design needs of the range hood, the range hood will be designed to be thin, that is, the front and rear longitudinal depth of the range hood is thinned. For example, a range hood is disclosed in Chinese patent application No. CN202020066610.2 (authorized publication No. CN211822584U), which includes a shell and a fan system arranged in the shell. The lower part of the shell has a vertically extending smoke inlet cavity. The front side wall of the lower part of the shell is provided with a smoke inlet which is in communication with the smoke inlet cavity, and a smoke baffle horizontally or obliquely extending forward along the upper edge of the smoke inlet.

[0004] However, the above-mentioned range hood still has certain deficiencies. The opening direction of the air inlet of this kind of range hood is generally horizontal and forward, which makes the air inlet direction of the range hood have a certain angle with the rising direction of the oil fume, which is not conducive to the suction of the oil fume. When frying, the oil fume will escape from the sides and the front.

[0005] Therefore, the existing range hood still needs to be further improved. SUMMARY

[0006] The technical problem to be solved by the present application is to provide a range hood which can lower the negative pressure area and improve the oil fume suction effect.

[0007] The technical scheme adopted by the present application to solve the above technical problem is as follows: a range hood, comprising:

[0008] a shell having a smoke inlet cavity with an open front part;

[0009] a panel rotatably arranged at the front part of the shell and capable of opening and closing the open front part of the smoke inlet cavity;

[0010] The air inlet assembly is connected between the back of the panel and the cabinet, and comprises an air inlet plate, an air guide plate, and two side plates extending from the left and right sides of the back of the panel towards the cabinet. The air inlet plate has an air inlet opening, and the bottom side of the air inlet plate is pivotally connected to the cabinet about an axis extending left and right. The top side of the air inlet plate has two first connecting rods extending side by side, and the ends of the two first connecting rods away from the main body of the air inlet plate are slidably connected to the back of the panel. The bottom edge of the air guide plate is pivotally connected to the panel about an axis extending left and right, and the top edge of the air guide plate has two second connecting rods extending side by side. The two first connecting rods are pivotally connected to the two second connecting rods, respectively, and the positions where the first connecting rods are pivotally connected to the second connecting rods are movable along the length direction of the second connecting rods. When the panel is in the open state, the air inlet plate, the air guide plate, the two side plates, and the panel jointly define an air inlet chamber that is in communication with the smoke inlet chamber.

[0011] In order to achieve the pivotal connection between the air inlet plate and the panel, the left and right sides of the back of the panel are provided with connecting brackets arranged side by side and extending in the up and down direction. Each connecting bracket has a first sliding groove extending along the length direction thereof, and the ends of the two first connecting rods away from the main body of the air inlet plate are slidably connected to the first sliding grooves of the corresponding connecting brackets via first pin shafts.

[0012] In order to achieve the non-fixed-axis pivotal connection between the air inlet plate and the air guide plate, the two second connecting rods each have a second sliding groove extending along the length direction thereof, and the two first connecting rods are slidably connected to the second sliding grooves of the corresponding second connecting rods via second pin shafts. The positions of the second pin shafts on the first connecting rods are adjacent to the top side edge of the air inlet plate.

[0013] In order to increase the area of the negative pressure zone that moves downward with the opening of the panel as much as possible, the positions where the air guide plate is pivotally connected to the panel are adjacent to the bottom edge of the panel.

[0014] In order to ensure the effect of gathering smoke, when the panel is in the open state, the top edge of the air inlet plate is arranged at an angle with the air guide plate, and correspondingly, the bottom edges of the two side plates are each V-shaped with the opening facing outward.

[0015] As an improvement, when the panel is in the open state, the air inlet plate is inclined rearward from top to bottom, and the air guide plate is inclined forward from top to bottom.

[0016] In order to avoid the air inlet assembly occupying too much space in the inner cavity of the cabinet, when the panel is in the closed state, the air inlet plate and the air guide plate are stacked together and are each arranged substantially vertically, and the two side plates are accommodated in the smoke inlet chamber of the cabinet.

[0017] In order to make the range hood smaller in overall front-rear dimension in the off state, reduce the space compression to the user, the panel is vertically arranged in the closed state.

[0018] Generally, the panel can be manually opened by the user, but in order to realize the automatic control of the panel and the air inlet assembly, the driving device is further arranged in the casing, and the power output end of the driving device is connected with the back surface of the panel, so as to drive the panel to flip forward and backward. The range hood is generally provided with a smoke concentration sensor, and the driving device and the smoke concentration sensor can be electrically connected with the control system of the range hood. Therefore, the control system can control the driving device to act according to the smoke concentration signal transmitted by the smoke concentration sensor, and then drive the panel to open and close.

[0019] As an improvement, the driving device comprises an electric push rod, a main body of the electric push rod is hinged on the rear side wall of the casing, and the end of the telescopic rod of the electric push rod is connected with the rotation of the panel. It is conceived that the driving device can also adopt a movement mechanism formed by a driving motor and a hinge assembly to drive the panel to deflect.

[0020] Compared with the prior art, the advantages of the present application are that when the panel is deflected forward to open, the top of the air inlet plate can be deflected forward and downward with the panel, and the top of the air deflector is also deflected backward and downward while the air deflector moves forward with the panel. Therefore, the panel, the air deflector, the air inlet plate and the left and right side plates form a negative pressure cavity (air inlet chamber), the negative pressure area of the negative pressure cavity is more downward, the air inlet is more smooth, and the smoke suction effect is better. On the other hand, the existence of the above-mentioned negative pressure cavity can also weaken part of the aerodynamic noise, and the air inlet is relatively more downward and relatively farther away from the ear, the sensory noise is smaller, and the user's use experience is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a perspective structural schematic view of the range hood of the embodiment of the present application (the panel is in the open state);

[0022] Figure 2 It is a left view of the range hood of the embodiment of the present application (the panel is in the open state);

[0023] Figure 3 It is a perspective structural schematic view of the range hood of the embodiment of the present application (the panel is in the open state, and the left side plate of the air inlet assembly is hidden);

[0024] Figure 4 It is a perspective structural schematic view of the range hood of the embodiment of the present application (the left side wall plate of the casing is hidden);

[0025] Figure 5 Figure 4Structure diagram of the left side of the air inlet assembly. DETAILED DESCRIPTION

[0026] The application will be further described below in connection with the drawings.

[0027] In the description and claims of the application, terms such as "front", "back", "up", "down", "right", "left", "side", "top", "bottom", and the like are used for convenience in providing a reference for describing the various example embodiments of the application. It will be understood that these terms are used in connection with the examples illustrated in the drawings and are by no means limiting of the scope of the application. At least one example embodiment of the application is capable of operating in different orientations than shown in the figures.

[0028] Figures 1-5 A preferred embodiment of the range hood of the present application is shown. The range hood includes a housing 10 and a centrifugal fan 14 disposed in the housing 10, the housing 10 defines a smoke inlet chamber 100 which is open at the front, and the housing 10 is further provided with a panel 11, the top of the panel 11 is rotatably connected to the housing 10 by a hinge mechanism. The rotation axis of the panel 11 relative to the housing 10 extends in the left-right direction. The panel 11 can open and close the front opening of the housing 10 by rotating relative to the housing 10, and the panel 11 extends vertically when it closes the front opening of the housing 10. The centrifugal fan 14 is disposed in the housing 10, and generates negative pressure when it operates, so that external oil fume can be sucked into the housing 10. The bottom of the housing 10 is provided with an oil cup 12 which is long and extends in the left-right direction, and is used to collect oil stains flowing down from the housing 10.

[0029] The panel 11 is driven to deflect forward and backward relative to the main body of the housing 10 by a driving device. Specifically, the driving device of the present embodiment uses an electric push rod 30, the main body of which is mounted on the rear side wall of the housing 10 by a hinge seat, and the end of the telescopic rod of the electric push rod 30 is rotatably connected to the back of the panel 11. When the electric push rod 30 is extended, the panel 11 deflects forward to open, and when the electric push rod 30 is retracted, the panel 11 deflects backward to close.

[0030] The back of the panel 11 and the front opening of the housing 10 are further provided with an air inlet assembly 2. When the panel 11 is closed, the air inlet assembly 2 is accommodated in the smoke inlet chamber 100 of the housing 10 by deflecting backward with the panel 11, and when the panel 11 is opened, the air inlet assembly 2 is exposed outside the smoke inlet chamber 100 of the housing 10 by deflecting forward with the panel 11.

[0031] Referring to Figures 3-5The air inlet assembly 20 comprises an air inlet plate 21, an air guide plate 23 and two side plates 24. The two side plates 24 extend from the left and right sides of the back of the panel 11 towards the inside of the casing 10. Specifically, the bottom edges of the two side plates 24 are open V-shaped, and the shape is adapted to the profiles of the air inlet plate 21 and the air guide plate 23 which are arranged at an angle when the panel 11 is extended forward. The air inlet plate 21 is provided with an air inlet 210, and the bottom side of the air inlet plate 21 is rotatably connected to the open bottom of the front of the casing 10 through a left and right extending rotating shaft. The left and right sides of the top side of the air inlet plate 21 are provided with two first connecting rods 211 which extend side by side. The two first connecting rods 211 are parallel to the left and right sides of the air inlet plate 21. The left and right sides of the back of the panel 11 are provided with two connecting brackets 111 which extend in the up and down direction and are arranged side by side. Each connecting bracket 111 is provided with a first sliding groove 1110 which extends in the length direction of the connecting bracket 111. The ends of the two first connecting rods 211 which are away from the main body of the air inlet plate 21 are slidably connected to the first sliding grooves 1110 of the corresponding connecting brackets 111 through first pin shafts 212. Specifically, when the panel 11 is deflected forward to open, the first pin shafts 212 on the two first connecting rods 211 slide downward along the first sliding grooves 1110 of the two connecting brackets 111, and the top of the air inlet plate 21 is deflected forward and downward along with the panel 11. The bottom edge of the air guide plate 23 is rotatably connected to the back of the panel 11 through a left and right extending rotating shaft. Specifically, the position where the back of the panel 11 is rotatably connected to the air guide plate 23 is adjacent to the bottom edge of the panel 11, so that the negative pressure area extends as far forward as possible. The left and right sides of the top edge of the air guide plate 23 are provided with two second connecting rods 231 which extend side by side. The two second connecting rods 231 are provided with second sliding grooves 2310 which extend in the length direction of the second connecting rods 231. The two first connecting rods 211 are provided with two second pin shafts 213 which extend left and right, i.e. the second pin shafts 213 are slidably connected to the second sliding grooves 2310 of the corresponding second connecting rods 231 through the second pin shafts 213. Specifically, the positions of the second pin shafts 213 on the first connecting rods 211 are adjacent to the top side of the air inlet plate 21. In this way, when the panel 11 moves forward, the top of the air guide plate 23 also deflects downward and rearward. Figure 3As shown, when the panel 11 is opened to the limit position, the air inlet plate 21 is inclined downward and backward, the air guide plate 23 is inclined upward and forward, and the second pin shaft 213 on the first connecting rod 211 is also close to the side edge of the air guide plate 23. The top side edge of the air inlet plate 21 and the side edge of the air guide plate 23 can be basically close to each other, so that the panel 11, the air guide plate 23, the air inlet plate 21 and the two side plates 24 form a negative pressure cavity (air inlet chamber 200). The negative pressure area of the negative pressure cavity is more downward, the air inlet is more smooth, and the oil fume extraction effect is better. On the other hand, the existence of the above-mentioned negative pressure cavity can also weaken part of the aerodynamic noise, and the air inlet 210 is relatively more downward than the existing air inlet 210 position, relatively more away from the ear, the sensory noise is smaller, and the user's use experience is improved.

[0032] When the panel 11 is in the closed state, the panel 11 is vertically arranged, so that the overall front and back size of the range hood is smaller in the off state, reducing the space compression of the user, and the air inlet plate 21 and the air guide plate 23 of the air inlet assembly 20 are overlapped with each other and are folded in the front opening of the cabinet 10. Only two side plates 24 are received in the left and right sides of the smoke inlet chamber 100 of the cabinet 10, without occupying too much space in the cavity of the cabinet 10, avoiding the interference problem of the installation of the main components such as the centrifugal fan 14. The air inlet plate 21 and the air guide plate 23 are folded together and are basically vertically arranged, which facilitates the downward dripping of oil, and then collects the oil into the oil cup 12 through the bottom wall of the cabinet 10 from front to back.

[0033] The bottom front side of the cabinet 10 is also provided with two auxiliary air inlets 13, which are arranged in the left and right directions. When the oil fume is small (such as cooking mode), the panel 11 does not need to be deflected forward to open, and the air inlet assembly 20 can not be opened with the panel 11. The flue gas can enter from the bottom auxiliary air inlet 13 of the cabinet 10.

[0034] The cabinet 10 of the range hood is generally provided with an oil fume concentration sensor. The above-mentioned driving device and oil fume concentration sensor can be electrically connected with the control system of the range hood, so that the control system can control the driving device to act according to the oil fume concentration signal transmitted by the oil fume concentration sensor, and then drive the panel 11 to open and close.

Claims

1. An extractor hood, comprising: a casing (10) having a smoke inlet chamber (100) with a front opening; a panel (11) rotatably arranged at the front of the casing (10) and capable of opening and closing the front opening of the smoke inlet chamber (100); characterized in that it further comprises an air inlet assembly (20) connected between the back of the panel (11) and the casing (10), the air inlet assembly (20) comprising an air inlet plate (21), an air guide plate (23) and two side plates (24) extending from the left and right sides of the back of the panel (11) towards the inside of the casing (10), the air inlet plate (21) being provided with an air inlet opening (210) and having its bottom side edge rotatably connected to the casing (10) about an axis extending left and right, the top side edge of the air inlet plate (21) having two first connecting rods (211) extending side by side, the ends of the two first connecting rods (211) away from the main body of the air inlet plate (21) being slidably constrained to the back of the panel (11), the bottom edge of the air guide plate (23) being rotatably connected to the panel (11) about an axis extending left and right, the top edge of the air guide plate (23) having two second connecting rods (231) extending side by side, the two first connecting rods (211) being rotatably connected to the two second connecting rods (231) respectively, and the positions at which the first connecting rods (211) and the second connecting rods (231) are rotatably connected being movable along the length direction of the second connecting rods (231), when the panel (11) is in an open state, the air inlet plate (21), the air guide plate (23), the two side plates (24) and the panel (11) together defining an air inlet chamber (200) in communication with the smoke inlet chamber (100).

2. The hood according to claim 1, characterized in that: The left and right sides of the back of the panel (11) are provided with two connecting supports (111) arranged side by side and extending in the up and down direction, each of the connecting supports (111) being provided with a first sliding groove (1110) extending along the length direction thereof, and the ends of the two first connecting rods (211) away from the main body of the air inlet plate (21) being slidably connected to the first sliding grooves (1110) of the corresponding connecting supports (111) via first pin shafts (212).

3. The hood according to claim 1, characterized in that: The two second connecting rods (231) are each provided with a second sliding groove (2310) extending along the length direction thereof, and the two first connecting rods (211) are slidably connected to the second sliding grooves (2310) of the corresponding second connecting rods (231) via second pin shafts (213), the positions of the second pin shafts (213) on the first connecting rods (211) being adjacent to the top side edge of the air inlet plate (21).

4. The hood according to claim 1, characterized in that: The position at which the panel (11) is rotatably connected to the air guide plate (23) is adjacent to the bottom edge of the panel (11).

5. The hood according to claim 1, characterized in that: When the panel (11) is in an open state, the top edge of the air inlet plate (21) is arranged at an angle with the air guide plate (23), and correspondingly, the bottom edges of the two side plates (24) are each V-shaped with the opening facing upwards.

6. The hood according to claim 5, characterized in that: When the panel (11) is in the open state, the air inlet plate (21) is inclined backward from top to bottom, and the air deflector (23) is inclined forward from top to bottom.

7. The hood according to claim 1, characterized in that: When the panel (11) is in the closed state, the air inlet plate (21) and the air deflector (23) are overlapped together, and are vertically arranged, and the two side plates (24) are accommodated in the smoke inlet chamber (100) of the cabinet (10).

8. The hood according to claim 1, characterized in that: When the panel (11) is in the closed state, the panel (11) is vertically arranged.

9. The hood according to claim 1, characterized in that: The cabinet (10) is further provided with a driving device, a power output end of the driving device is connected with the back surface of the panel (11), so as to drive the panel (11) to turn back and forth.

10. The hood according to claim 9, characterized in that: The driving device comprises an electric push rod (30), a main body of the electric push rod (30) is hinged on the rear side wall of the cabinet (10), and the end of the telescopic rod of the electric push rod (30) is rotationally connected with the panel (11).

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