Side suction type range hood

Abstract

The utility model relates to a side suction type range hood, which comprises a shell, a smoke barrier; a movement mechanism; the motion mechanism comprises a driving part, a driving rod, a connecting rod and a fixing frame, the driving rod is rotationally connected to the fixing frame through a first shaft, the front end of the driving rod is rotationally connected with the auxiliary supporting arm of the smoke barrier through a second shaft, and the rear end of the driving rod is connected with the driving part; the first end of the connecting rod is rotationally connected to the fixing frame through a third shaft, the second end of the connecting rod is rotationally connected to an auxiliary supporting arm of the smoke barrier through a fourth shaft, and the front end of the driving rod and the second end of the connecting rod are connected with different positions of the auxiliary supporting arm respectively. And the rear end part of the driving rod and the first end of the connecting rod are respectively connected with different positions of the fixing frame. The smoke barrier has the advantage that the problem that a large gap exists between the smoke barrier and a machine body when the smoke barrier is opened and closed can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to a side-suction range hood. Background Art

[0002] A range hood is a kitchen appliance that purifies the kitchen environment. Usually, range hoods include top suction type and near (side) suction type. The near suction type range hood uses the principle of vortex wind pressure to absorb most of the oil smoke close to the stove in an arc form, which can reduce the adverse effects on human health.

[0003] Current close-suction range hoods, such as the Chinese utility model patent "A Close-Suction Range Hood", with patent number ZL201721290314.5 (authorization announcement number CN207539970U), disclose a close-suction range hood, including a housing and a fan system, wherein the housing includes a panel located at the front end and inclined to the horizontal direction, and an opening is provided on the panel to become the air inlet of the range hood, and a smoke screen is provided on the front side of the panel, and the smoke screen is rotatably connected to the upper part of the panel, so that the smoke screen can rotate outward to open the air inlet of the range hood or rotate inward to close the air inlet of the range hood. The rotation of the above-mentioned smoke screen is basically a fixed-axis rotation. After the smoke screen opens the air inlet, the top edge of the smoke screen is higher than the top of the housing, and there is a large gap between the two. This gap can cause oil smoke to escape, causing trouble to the user. If the front side wall of the range hood is a three-section panel structure, the smoke shield will also be higher than the bottom of the upper panel when it is opened, resulting in a large gap, causing smoke to escape. Conversely, since the smoke shield moves in a fixed-axis rotation mode, there will also be a large gap between the smoke shield and the upper panel after it is closed, reducing the refinement of the product.

[0004] Therefore, existing range hoods need further improvement. Utility Model Content

[0005] The first technical problem to be solved by the utility model is to provide a side-suction range hood which can effectively improve the problem of a large gap between the smoke baffle and the machine body when the smoke baffle is opened and closed, in view of the current status of the prior art.

[0006] The second technical problem to be solved by the utility model is to provide a side-suction range hood that can effectively avoid the problem of the left and right sides of the smoke baffle being out of sync when closing the air inlet, in view of the current status of the prior art.

[0007] The technical solution adopted by the utility model to solve the above-mentioned first technical problem is: a side-suction range hood, comprising:

[0008] The casing has an air inlet on its front side wall;

[0009] a smoke baffle, disposed at the air inlet of the housing, and arranged to be able to rotate forward relative to the housing to open the air inlet or rotate backward relative to the housing to close the air inlet;

[0010] A motion mechanism, disposed on the housing and connected to the smoke baffle, thereby driving the smoke baffle to deflect forward and backward;

[0011] The upper area of ​​the back side of the smoke shield is provided with an auxiliary support arm extending backward, and the movement mechanism includes a driving member, a driving rod, a connecting rod and a fixing frame, and the fixing frame is arranged on the casing, and the driving rod is rotatably connected to the fixing frame by a first axis extending left and right. The driving rod is extended and arranged in a front-to-back direction, and its front end portion is rotatably connected to the auxiliary support arm of the smoke shield by a second axis extending left and right, and its rear end portion is connected to the driving member, and can rotate around the above-mentioned first axis under the drive of the driving member. The first end of the connecting rod is rotatably connected to the fixing frame by a third axis extending left and right, and the second end is rotatably connected to the auxiliary support arm of the smoke shield by a fourth axis extending left and right, the front end portion of the driving rod and the second end of the connecting rod are respectively connected to different positions on the auxiliary support arm, and the rear end portion of the driving rod and the first end of the connecting rod are respectively connected to different positions of the fixing frame, so that the driving rod, the fixing frame, the connecting rod and the auxiliary support arm constitute a four-bar linkage.

[0012] The motion mechanism used to drive the smoke baffle to deflect forward and backward has a four-bar linkage formed between its driving rod, fixing frame, connecting rod and the auxiliary arm of the smoke baffle. After the smoke baffle is opened, its top edge will not rise excessively as in the conventional fixed axis rotation mode, avoiding interference with the range hood casing or external cabinet, and achieving zero gap with the corresponding part of the casing, thereby effectively preventing the escape of oil smoke. After the smoke baffle is closed, its top is basically flush with the lower bottom surface of the corresponding part of the casing (the part above the smoke baffle), reducing the gap problem and improving the refinement of the product.

[0013] In order to ensure the stability of the movement of the four-bar linkage, the first axis and the third axis are arranged in sequence in the up and down directions, and the first axis is located above the third axis.

[0014] In order to ensure that the smoke shield remains at basically the same height when it is opened and closed, the fourth axis on the auxiliary support arm is located below and in front of the third axis when the smoke shield is in the state of closing the air inlet, and the fourth axis on the auxiliary support arm is located above and in front of the third axis when the smoke shield is in the state of opening the air inlet.

[0015] The driving member can adopt various existing technologies such as an electric push rod, gears and transmission mechanisms cooperating with a driving device that can drive the driving rod to deflect. Preferably, the driving member includes an electric push rod, the main body of the electric push rod is rotatably connected to the rear side wall of the casing, and the end of the telescopic rod of the electric push rod is rotatably connected to the front end of the driving rod through a fifth axis extending left and right.

[0016] As an improvement, the first axis is located below a line connecting the second axis and the fifth axis.

[0017] In order to ensure the stability of the movement of the smoke shield driven by the motion mechanism, the back of the smoke shield has two auxiliary arms arranged side by side on the left and right sides, the second end of the connecting rod is located between the two auxiliary arms, and the left and right ends of the fourth shaft are respectively connected to the two auxiliary arms;

[0018] The fixing frame includes vertical plates arranged at intervals on the left and right sides, the first end of the connecting rod is located between the two vertical plates, and the left and right ends of the third axis are respectively connected to the two vertical plates, the part of the driving rod where the first axis is located is located between the two vertical plates, and the left and right ends of the first axis are respectively connected to the two vertical plates.

[0019] In order to avoid interference between the driving rod and the connecting rod during operation, the front end of the driving rod also has connecting arms which are arranged at intervals on the left and right and extend forward. A gap is formed between the two connecting arms for the connecting rod to be accommodated therein. The ends of the two connecting arms are connected to the two auxiliary arms of the smoke shield through a second axis.

[0020] The technical solution adopted by the utility model to solve the second technical problem is that the area where the auxiliary support arm is located on the smoke shield is located in the middle of the smoke shield in the left-right direction.

[0021] The position where the motion mechanism applies force to the smoke shield is set in the middle of the left and right directions, so that the synchronization of the two sides of the smoke shield during operation can be ensured.

[0022] As an improvement, a clearance opening is also provided on the front side wall of the housing for the movement mechanism and the auxiliary support arm to move in and out of the housing front and back.

[0023] In order to further reduce the problem of oil smoke escaping at the top when the smoke baffle is open, the front top of the casing also has a protrusion protruding relatively forward, and the top edge of the smoke baffle in the open state is located below the protrusion.

[0024] Compared with the prior art, the advantages of the utility model are as follows: the motion mechanism used to drive the front and rear deflection of the smoke baffle, the driving rod, the fixing frame, the connecting rod and the auxiliary arm of the smoke baffle form a four-bar linkage. After the smoke baffle is opened, its top edge will not be excessively raised as in the conventional fixed axis rotation mode, avoiding the interference problem with the housing of the range hood or the external cabinet, and can achieve zero gap with the corresponding part of the housing, thereby effectively preventing the escape of oil smoke. After the smoke baffle is closed, its top is basically flush with the lower bottom surface of the corresponding part of the housing (the part located above the smoke baffle), reducing the gap problem and improving the refinement of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a three-dimensional structural schematic diagram of a range hood according to an embodiment of the utility model (the smoke baffle is in an open state);

[0026] Figure 2 This is a three-dimensional structural schematic diagram of the range hood of the embodiment of the utility model from another angle (the smoke baffle is in an open state);

[0027] Figure 3 This is a cross-sectional view of a range hood according to an embodiment of the utility model (the smoke baffle is in an open state);

[0028] Figure 4 This is a three-dimensional structural diagram of the smoke shield and the motion mechanism of an embodiment of the utility model (the smoke shield is in an open state);

[0029] Figure 5 This is a right side view of the smoke shield and the motion mechanism of the embodiment of the utility model (the smoke shield is in the open state);

[0030] Figure 6 This is a cross-sectional view of a range hood according to an embodiment of the utility model (the smoke baffle is in a closed state);

[0031] Figure 7 It is a right side view of the smoke baffle and the motion mechanism of the embodiment of the utility model (the smoke baffle is in the closed state). DETAILED DESCRIPTION

[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0033] In the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in the present invention can be arranged in different directions, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0034] Figure 1-Figure 7 A preferred embodiment of the near-suction range hood of this embodiment is shown. The range hood includes a housing 10 and a centrifugal fan (not shown) arranged in the housing 10. The housing 10 generally includes a fan frame 11 and a fume hood 12 arranged at the bottom of the fan frame 11. The inner cavity of the fan frame 11 is connected to the inner cavity of the fume hood 12. An air inlet panel 120 tilted backward from top to bottom is provided on the front side of the fume hood 12. An air inlet 121 is provided on the air inlet panel 120, and external smoke can enter the fume hood 12 through the air inlet 121. The centrifugal fan is arranged in the fan frame 11. When the centrifugal fan is in operation, negative pressure is generated, and external oil smoke can be sucked into the fume hood 12 through the air inlet 121. An oil cup is provided at the bottom of the fume hood 12. The oil cup is in the shape of a long strip extending left and right, and is used to receive the oil stains flowing down from the fume hood 12. The front part of the smoke hood 12 is also provided with a smoke baffle 20 which can be deflected forward and backward relative to the smoke hood 12. The smoke baffle 20 is connected to the main body of the smoke hood 12 through a motion mechanism. Specifically, it can be deflected forward to open the above-mentioned air inlet 121 and deflected backward to block and close the above-mentioned air inlet 121.

[0035] See also Figure 2 A smoke plate support 22 is provided in the upper area of ​​the back of the smoke baffle 20. The smoke plate support 22 includes two auxiliary support arms 21 which are arranged at intervals on the left and right and extend backwards. Figure 6As shown, the auxiliary support arm 21 extends toward the rear and upward. The smoke plate bracket 22 is located in the middle of the left-right direction of the smoke baffle 20. The power output end of the motion mechanism is connected to the two auxiliary support arms 21 mentioned above. Specifically, the motion mechanism includes a driving member 31, a driving rod 32, a connecting rod 33 and a fixing frame 34. The fixing frame 34 is arranged at the inner upper part of the air inlet panel 120, and includes two vertical plates 340 arranged at intervals on the left and right and extending upward. The driving rod 32 extends in the front-to-back direction, and its middle part is located between the two vertical plates 340 of the fixing frame 34, and is rotatably connected to the two vertical plates 340 of the fixing frame 34 through a first shaft 41 extending left and right. The front end of the driving rod 32 has a connecting support arm 321 arranged at intervals on the left and right and extending forward, and the ends of the two connecting support arms 321 are rotatably connected to the two auxiliary support arms 21 of the smoke baffle 20 through a second shaft 42. A clearance gap 322 is formed between the two connecting arms 321 at the front of the driving rod 32 for the connecting rod 33 to be accommodated therein, so as to avoid interference between the connecting rod 33 and the driving rod 32 during movement. The rear end of the driving rod 32 is rotatably connected to the end of the telescopic rod of the electric push rod (i.e., the driving member 31) through the fifth shaft 45 extending left and right, and can rotate around the first shaft 41 driven by the electric push rod. The main body of the electric push rod is rotatably connected to the rear side wall of the smoke hood 12 through a hinge seat. The first end of the connecting rod 33 is located between the two vertical plates 340 of the fixing frame 34, and is rotatably connected to the two vertical plates 340 of the fixing frame 34 through the third shaft 43 extending left and right. The second end of the connecting rod 33 is located between the two auxiliary arms 21 of the smoke baffle 20, and is rotatably connected to the two auxiliary arms 21 of the smoke baffle 20 through the fourth shaft 44 extending left and right, and the first shaft 41 and the third shaft 43 are arranged in sequence in the up and down direction, and the first shaft 41 is located above the third shaft 43.

[0036] The front end of the driving rod 32 and the second end of the connecting rod 33 are respectively connected to different positions on the auxiliary support arm 21, and the rear end of the driving rod 32 and the first end of the connecting rod 33 are respectively connected to different positions of the fixing frame 34. Specifically, when the smoke shield 20 is in the state of closing the air inlet 121, the fourth shaft 44 on the auxiliary support arm is located in the front and lower part of the third shaft 43, and when the smoke shield 20 is in the state of opening the air inlet 121, the fourth shaft 44 on the auxiliary support arm is located in the front and upper part of the third shaft 43. The driving rod 32 is a triangular plate structure as a whole. Specifically, the first shaft 41, the second shaft 42 and the fifth shaft 45 are respectively located at the three corners of the triangular plate, and the first shaft 41 is located at the bottom corner, that is, the first shaft 41 is located below the line between the second shaft 42 and the fifth shaft 45.

[0037] The driving rod 32, the fixing frame 34, the connecting rod 33 of the motion mechanism of this embodiment and the auxiliary arm 21 of the smoke baffle 20 form a four-bar linkage. After the smoke baffle 20 is opened, its top edge will not rise as in the conventional fixed axis rotation mode, avoiding the interference problem with the housing 10 of the range hood or the external cabinet, and can achieve zero gap with the corresponding part of the housing 10, thereby effectively preventing the escape of oil smoke. After the smoke baffle 20 is closed, its top is basically flush with the lower bottom surface of the corresponding part of the housing 10 (the part located above the smoke baffle 20), which can also improve the refinement of the product.

[0038] See also Figure 2 The upper part of the air inlet panel 120 is also provided with a clearance opening 123 for the motion mechanism and the auxiliary arm 21 to enter and exit the housing 10. When the smoke baffle 20 is opened, the connecting rod 33 and the driving rod 32 of the motion mechanism can be extended forward from the housing 10 to ensure the opening angle of the smoke baffle 20. When the smoke baffle 20 is closed, the connecting rod 33 and the driving rod 32 of the motion mechanism are retracted into the housing 10, and at the same time, the auxiliary arm 21 of the smoke baffle bracket 22 can also extend into the housing 10 through the clearance opening 123, thereby ensuring that the smoke baffle 20 is closed in place and fits with the air inlet panel 120, improving the refinement of the product.

[0039] The top of the front side of the housing 10 also has a protruding portion 122 that protrudes relatively forward. The top edge of the smoke shield 20 in the open state is located below the protruding portion 122 and close to the bottom wall of the protruding portion 122, which can further reduce the problem of oil smoke escaping from the top when the smoke shield 20 is in the open state. In addition, since the smoke shield bracket 22 (that is, the area where the auxiliary support arm 21 is located) of this embodiment is located in the middle of the left and right directions of the smoke shield 20, the position where the motion mechanism acts on the smoke shield 20 also corresponds to the middle of the smoke shield 20, which can ensure the synchronization of the two sides of the smoke shield 20 when it is running.

[0040] The range hood of this embodiment is used to drive the movement mechanism of the smoke baffle 20 to deflect forward and backward. Its driving rod 32, fixing frame 34, connecting rod 33 and auxiliary arm 21 of the smoke baffle 20 form a four-bar linkage. The deflection of the smoke baffle 20 is a non-fixed axis rotation. After the smoke baffle 20 is opened, its top edge will not rise excessively as in the conventional fixed axis rotation mode, avoiding the interference problem with the housing 10 of the range hood or the external cabinet, and can achieve zero gap with the corresponding part of the housing 10, thereby effectively preventing the escape of oil smoke. After the smoke baffle 20 is closed, its top is basically flush with the lower bottom surface of the corresponding part of the housing 10 (the part located above the smoke baffle 20), which can also improve the refinement of the product.

Claims

1. A side-suction range hood, comprising: The casing (10) has an air inlet (121) formed on its front side wall; A smoke baffle (20) is disposed at the air inlet (121) of the housing (10) and is arranged to be able to rotate forward relative to the housing (10) to open the air inlet (121) or rotate backward to close the air inlet (121); A motion mechanism, disposed on the housing (10) and connected to the smoke baffle (20), thereby driving the smoke baffle (20) to deflect forward and backward; The invention is characterized in that: an auxiliary support arm (21) extending backward is provided in the upper area of ​​the back side of the smoke shield (20); the movement mechanism comprises a driving member (31), a driving rod (32), a connecting rod (33) and a fixing frame (34); the fixing frame (34) is arranged on the housing (10); the driving rod (32) is rotatably connected to the fixing frame (34) via a first shaft (41) extending left and right; the driving rod (32) is arranged to extend in the front-to-back direction; the front end portion thereof is rotatably connected to the auxiliary support arm (21) of the smoke shield (20) via a second shaft (42) extending left and right; the rear end portion thereof is connected to the driving member (31) and can rotate around the above-mentioned shaft under the drive of the driving member (31). The first shaft (41) of the driving rod (32) is rotated, the first end of the connecting rod (33) is rotatably connected to the fixing frame (34) through a third shaft (43) extending left and right, and the second end is rotatably connected to the auxiliary support arm (21) of the smoke shield (20) through a fourth shaft (44) extending left and right. The front end of the driving rod (32) and the second end of the connecting rod (33) are respectively connected to different positions on the auxiliary support arm (21), and the rear end of the driving rod (32) and the first end of the connecting rod (33) are respectively connected to different positions on the fixing frame (34), so that the driving rod (32), the fixing frame (34), the connecting rod (33) and the auxiliary support arm (21) form a four-bar linkage.

2. The side-suction range hood according to claim 1, characterized in that: The first shaft (41) and the third shaft (43) are arranged in sequence in the up-down direction, and the first shaft (41) is located above the third shaft (43).

3. The side-suction range hood according to claim 1, characterized in that: When the smoke shield (20) is in a state of closing the air inlet (121), the fourth shaft (44) on the auxiliary support arm is located below and in front of the third shaft (43); when the smoke shield (20) is in a state of opening the air inlet (121), the fourth shaft (44) on the auxiliary support arm is located above and in front of the third shaft (43).

4. The side-suction range hood according to claim 1, characterized in that: The driving member (31) comprises an electric push rod, the main body of which is rotatably connected to the rear side wall of the housing (10), and the end of the telescopic rod of the electric push rod is rotatably connected to the front end of the driving rod (32) via a fifth shaft (45) extending left and right.

5. The side-suction range hood according to claim 4, characterized in that: The first axis (41) is located below a line connecting the second axis (42) and the fifth axis (45).

6. The side-suction range hood according to claim 1, characterized in that: The back side of the smoke shield (20) has two auxiliary arms (21) arranged side by side on the left and right sides, the second end of the connecting rod (33) is located between the two auxiliary arms (21), and the left and right ends of the fourth shaft (44) are respectively connected to the two auxiliary arms (21); The fixing frame (34) comprises vertical plates (340) arranged at intervals on the left and right, the first end of the connecting rod (33) is located between the two vertical plates (340), and the left and right ends of the third shaft (43) are respectively connected to the two vertical plates (340), the part of the driving rod (32) where the first shaft (41) is located is located between the two vertical plates (340), and the left and right ends of the first shaft (41) are respectively connected to the two vertical plates (340).

7. The side-suction range hood according to claim 6, characterized in that: The front end of the driving rod (32) also has connecting arms (321) which are arranged at intervals on the left and right and extend forward, and a clearance gap (322) for receiving the connecting rod (33) is formed between the two connecting arms (321), and the ends of the two connecting arms (321) are correspondingly connected to the two auxiliary arms (21) of the smoke baffle (20) through a second shaft (42).

8. The side-suction range hood according to any one of claims 1 to 7, characterized in that: The area where the auxiliary support arm (21) is located on the smoke baffle (20) is located in the middle of the smoke baffle (20) in the left-right direction.

9. The side-suction range hood according to any one of claims 1 to 7, characterized in that: The front side wall of the housing (10) is also provided with a clearance opening (123) for the movement mechanism and the auxiliary support arm (21) to move in and out of the housing (10) front and back.

10. The side-suction range hood according to any one of claims 1 to 7, characterized in that: The front top of the housing (10) also has a protruding portion (122) that protrudes relatively forward, and the top edge of the smoke baffle (20) in the open state is located below the protruding portion (122).

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