Side suction type range hood

Abstract

The utility model relates to a kind of side suction type range hood, comprising: shell, the front side of shell has the air inlet panel that is inclined to rear from top to bottom, the shell is formed with the first air inlet corresponding to the upper portion of air inlet panel, and the second air inlet is formed corresponding to the lower portion of air inlet panel;Fan system, be located in the shell, including volute, the volute has the front air inlet towards the air inlet panel and the rear air inlet away from the air inlet panel;The shell is equipped with guide vane, the guide vane divides the internal space of the shell into first air inlet channel and second air inlet channel, which are arranged in front and back in turn, the first air inlet channel is connected with the front air inlet of the volute, and the second air inlet channel is connected with the rear air inlet of the volute.The advantage is that: the air inlet channel of range hood can be optimized, reduce the turbulence intensity of airflow, effectively improve the noise and high energy consumption problem of range hood.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, and in particular to a side-suction range hood. Background Technology

[0002] Range hoods have become an indispensable kitchen appliance in modern homes. They generally come in two types: top-mounted and side-mounted. Side-mounted range hoods utilize the principle of vortex air pressure to absorb cooking fumes in an arc, resulting in better fume extraction and preventing users from bumping their heads, thus providing a better user experience. This makes side-mounted range hoods a classic design and widely popular among Chinese consumers.

[0003] Traditional side-draft range hoods typically use an oil filter installed at the front air inlet to filter cooking fumes. However, after prolonged use, grease accumulates on the filter, becoming visible at the air inlet and negatively impacting the hood's appearance and user experience. To address this, existing side-draft range hoods feature a multi-intake channel design with a concealed oil filter. This design includes an outer shell containing a suction assembly. The front of the outer shell is covered by a panel with a smoke inlet. A condenser plate, longitudinally separated from the panel, covers the smoke inlet's visible area. Behind the condenser plate is a mounting plate, which, together with the mounting plate, blocks the airflow between the smoke inlet and the suction assembly. The mounting plate has oil filter holes located outside the visible area of ​​the smoke inlet, which connect to both the smoke inlet and the suction assembly. The patent application CN202121427868.1, entitled "A Range Hood with an Invisible Air Inlet Net", discloses the structure of this side-suction range hood.

[0004] However, the side-suction range hood in the above patent application still has some shortcomings: after setting up a condenser plate and a mounting plate to form two air intake channels, some airflow enters the range hood from top to bottom and the other airflow enters the range hood from bottom to top. The convergence of these two airflows will inevitably aggravate the turbulence intensity of the airflow inside the range hood, resulting in a significant increase in the noise and energy consumption of the range hood.

[0005] Therefore, existing side-suction range hoods still need further improvement. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a side-suction range hood that optimizes the air intake channel of the range hood, reduces the intensity of airflow turbulence, and effectively improves the noise and high energy consumption of the range hood, in light of the current state of the technology.

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

[0008] The housing has an air inlet panel that slopes backward from top to bottom on its front side. The housing has a first air inlet at the upper part of the air inlet panel and a second air inlet at the lower part of the air inlet panel.

[0009] A fan system, disposed within the housing, includes a volute having a front air inlet facing the air inlet panel and a rear air inlet facing away from the air inlet panel.

[0010] The housing is provided with a baffle plate, which divides the internal space of the housing into a first air inlet channel and a second air inlet channel arranged in sequence. The first air inlet channel connects the first air inlet to the front air inlet of the volute, and the second air inlet channel connects the second air inlet to the rear air inlet of the volute.

[0011] As an improvement, the front top of the housing has a guide vane that extends rearward to the top rear side of the air inlet panel and then folds downward. The gap between the guide vane and the air inlet panel forms the first air inlet. The guide vane structure cleverly forms a relatively concealed slit-like air inlet behind the top of the panel, positioned high to facilitate the capture of rising fumes. Simultaneously, because the air inlet is located behind the top of the panel, it is not easily visible from the front, resulting in a cleaner and more aesthetically pleasing appearance. The downward-folding guide vane guides the incoming fume airflow downward towards the front air inlet of the volute, reducing airflow turbulence.

[0012] As an improvement, the bottom of the air guide plate also has a support plate extending forward and abutting against the inner wall of the air inlet panel. The support plate and / or the lower part of the air guide plate have multiple first air inlet holes arranged sequentially at intervals in the left-right direction. The opening of these first air inlet holes maintains good airflow guidance and avoids airflow turbulence. The support plate at the bottom of the air guide plate provides structural support for the air inlet panel; that is, the support plate not only serves to create the holes but also enhances the structural strength and stability of the air guide plate.

[0013] To maximize the air intake area and optimize the air intake path, the first air intake hole on the support plate is connected to the first air intake hole on the lower part of the guide plate, forming an overall L-shaped air intake hole. This L-shaped hole structure allows airflow to enter simultaneously from both the upper oblique direction of the panel (the hole on the guide plate) and the more forward vertical direction (the hole on the support plate), converging and flowing more smoothly into the first air intake channel. Continuous L-shaped holes are more conducive to forming a coherent airflow than dispersed holes, increasing the effective air intake cross-section. The integrated design of the connecting holes on the guide plate and support plate creates a unified opening area, resulting in a more natural airflow transition, easier processing, and reduced processing costs.

[0014] To achieve a concealed design for the air inlet holes on the air guide plate and support plate, the inner side of the air inlet panel that abuts against the support plate is lower than the upper edge of the air inlet panel. The portion of the upper part of the air inlet panel extending upwards from the position abutting against the support plate is designated as the shielding part. The first air inlet hole at the lower part of the air guide plate is concealed by the shielding part and is not visible from the front. The shielding part at the upper part of the air inlet panel conceals the air inlet holes at the lower part of the air guide plate (and also the air inlet holes on the support plate), making these air inlets invisible from the front of the range hood, resulting in a cleaner appearance. Of course, the shielding part also physically prevents oil droplets or water vapor that may splatter upwards during cooking from directly entering the holes, reducing clogging and cleaning difficulty.

[0015] To achieve smooth airflow at the top of the air inlet panel, the air guide plate includes an upper extension plate extending forward and backward above the air inlet panel, and a lower extension plate extending downward from the rear edge of the upper extension plate. The lower extension plate is inclined backward from top to bottom. The rearwardly inclined lower extension plate of the air guide plate better conforms to the downward and backward flow trajectory of the airflow, reduces resistance, guides the airflow more smoothly into the volute, and achieves the purpose of precisely controlling the airflow direction.

[0016] To ensure efficient intake of low-lying, dispersed fumes from the second air inlet at the bottom, while avoiding aesthetic impact, the lower part of the air inlet panel features a recessed area facing inwards towards the housing, adjacent to the bottom wall of the casing. The top wall of this recessed area extends from front to back and contains a second air inlet hole, which is concealed from the front by the lower edge of the air inlet panel. The low position of the recessed area at the bottom of the panel facilitates the capture of low-lying fumes escaping from the edge of the pot. The hole, located on the top wall of the recessed area and concealed by the lower edge of the panel, is completely hidden, resulting in an aesthetically pleasing appearance. The design of the opening on the top wall of the recessed area, combined with the recessed structure, effectively prevents dripping liquids or large particles from directly entering the air inlet, providing a degree of protection. The recessed area itself forms a small cavity, creating a stable airflow chamber and contributing to a stable incoming airflow.

[0017] To accommodate the left-right cooking work area (two burners on the left and right) and improve fume extraction, two air intake recesses are provided, located on the left and right sides of the lower part of the air intake panel, respectively. These recesses ensure that suction covers the lower left and right sides of the panel, making it particularly suitable for dual burners or large cookware.

[0018] As an improvement, the baffle plate is attached abutting against the front sidewall of the volute and has an opening opposite the inlet of the volute. The baffle plate's close contact with the volute wall and the opening directly facing the inlet provide the shortest and most direct inflow path for the airflow in the first air intake channel, minimizing resistance. Furthermore, the tightly fitted structure effectively prevents airflow leakage or eddy currents between the channel outlet and the volute inlet, improving fan efficiency. The overall structure of the internal fan system and the baffle plate of the range hood is more compact, saving space.

[0019] As one design for the air deflector, the air deflector is rectangular in shape. Its left and right edges connect to the left and right side walls of the housing, its top edge connects to the top wall of the housing, and its bottom edge folds forward and extends to connect to the inner wall of the air inlet panel. The air deflector is tightly connected to the housing wall on all four sides (left, right, and top), and its bottom (via the folded edge) connects to the inner side of the panel, forming a complete and sealed partition that effectively prevents airflow interference between the first and second channels. The four-sided fixing method ensures the air deflector is securely installed and resistant to deformation or vibration.

[0020] As an improvement, the lower edge of the air inlet panel where it meets the guide vane is lower than the lowest point of the inlet of the volute. This lower-than-lower point of the guide vane's contact with the air inlet panel means that the guide vane extends upwards (or the volute inlet is sufficiently high) after the contact point (towards the volute). This creates a natural upward slope for airflow from the contact point to the rear air inlet of the volute. This slope design facilitates the "lifting" of airflow into the volute, preventing accumulation or backflow at the bottom of the guide vane (near the panel contact point), thus optimizing airflow dynamics within the channel. The smoother flow path reduces energy loss and improves the smoke extraction efficiency of the first channel.

[0021] Considering the large area and high material cost of the rectangular baffle, and the inevitable lack of rigidity, requiring numerous fixing screws and increasing installation costs, the baffle's dimensions, at least in its lower region, gradually decrease from top to bottom. Furthermore, the outer periphery of the lower region of the baffle has a forward-bent baffle that abuts against the inner wall of the air inlet panel. The gradually narrowing width of the lower baffle makes its shape more closely resemble the inclined profile of the inner side of the air inlet panel, while the forward-bent baffle directly seals against the inner wall of the panel. This tapered narrowing + baffle structure makes the shape of the first air inlet channel entrance area smoother, reducing airflow loss due to contraction or expansion and improving intake efficiency. The continuous baffle tightly abuts against the inner wall of the panel, effectively preventing airflow from the first channel from leaking into the second channel or the outside, and also preventing accidental entry of external airflow. The narrowing shape helps to converge and guide airflow towards the volute, reducing material and installation costs.

[0022] As an improvement, the guide flange is arc-shaped, and the left-right spacing of the guide flange gradually decreases from top to bottom. The arc-shaped flange is more conducive to a smooth airflow transition than a right-angle flange, significantly reducing resistance, eddies, and noise when the airflow turns or enters the channel at this point. The arc-shaped flange with its gradually decreasing left-right spacing from top to bottom forms a smooth, tapering inlet shape, guiding the airflow to naturally and smoothly converge into the channel. The advantages of the arc-shaped guide flange design are: 1. Increased thickness of the guide plate, improving rigidity and reducing fixed costs. 2. Reduced overall area of ​​the guide plate to some extent, lowering material costs. 3. Guides airflow entering from both sides of the upper air inlet to the central volute air inlet, further improving flow and reducing noise and energy consumption.

[0023] Considering that the processing cost of curved flanges is relatively high, it can also be optimized into straight flanges to further reduce costs. As another optional solution for flow guiding flanges, the flow guiding flanges include a bottom flange located at the bottom and extending in the left and right direction, and side flanges that slope from the bottom to the left and right sides respectively from the bottom flange.

[0024] The aforementioned constricted guide vane design primarily guides the airflow from the upper intake to the lower side of the volute inlet. Because the internal air intake channel is wider at the top and narrower at the bottom, the lower air intake channel of the volute is relatively narrow, making it difficult to smoothly transport the airflow from both sides to the middle, resulting in additional flow losses. Therefore, the side folds include a first inclined fold and a second inclined fold connected sequentially from top to bottom. The inclination angle of the first inclined fold relative to the horizontal direction is smaller than that of the second inclined fold relative to the horizontal direction. This design of the guide folds, by appropriately adjusting the inclination angle of the corresponding inclined folds, directs the airflow to a wider area in the side flow channel of the inlet, further improving flow conditions and reducing noise and energy consumption.

[0025] As an improvement, the fan system further includes an impeller located inside the volute. The position where the first inclined fold and the second inclined fold meet is horizontally below the axis of the impeller. This position is denoted as the fold position. The angle formed by the line connecting the fold position and the center of the impeller with the horizontal plane is denoted as A. The value of angle A is in the range of 20°≤A≤70°. Preferably, the value of A is in the range of 30°≤A≤70°. This structural design ensures that the inlet of the volute is not excessively obstructed, guaranteeing the overall flow performance of the airflow in this area.

[0026] Considering that the length of the guide fold at the corner is relatively long to provide a sufficiently spacious air intake channel, but the length of the guide fold is also limited by the aforementioned angle A, a balanced approach is needed to obtain the optimal overall performance. As an improvement, the fold length at the junction of the first and second inclined folds is denoted as L1, and the minimum fold length of the guide fold is located at the bottom and is denoted as L2, where 3≤L1 / L2≤5.

[0027] Compared with existing technologies, the advantages of this invention are as follows: This invention physically separates two independent airflow paths using a guide plate. The upper first air inlet and first air inlet channel are mainly responsible for capturing the rapidly rising main oil fumes, while the lower second air inlet and second air inlet channel are mainly responsible for capturing lower-positioned, easily diffused secondary oil fumes or scattered oil fumes. The dual-channel design can simultaneously cover oil fumes at different heights and in different areas, significantly reducing oil fume escape, especially improving the smoke extraction effect for large amounts of oil fumes or wide cookware. In particular, the two independent air inlet channels can effectively reduce mutual interference between the upper and lower airflows, allowing the airflow to be more smoothly guided to different inlets of the fan casing, potentially reducing noise and energy consumption. Attached Figure Description

[0028] Figure 1 This is a three-dimensional structural diagram of the range hood according to Embodiment 1 of this utility model;

[0029] Figure 2 This is a front view of the range hood according to Embodiment 1 of this utility model;

[0030] Figure 3 This is a sectional perspective view of the range hood of Embodiment 1 of this utility model, cut along the front-to-back direction;

[0031] Figure 4 This is a cross-sectional view of the range hood of Embodiment 1 of this utility model, cut along the front-to-back direction;

[0032] Figure 5 This is a three-dimensional structural diagram of the range hood of Embodiment 1 of this utility model after omitting the air inlet panel;

[0033] Figure 6 This is a three-dimensional structural diagram of the range hood in Embodiment 2 of this utility model, omitting the air inlet panel;

[0034] Figure 7 This is a three-dimensional structural diagram of the range hood in Embodiment 3 of this utility model, omitting the air inlet panel and air guide plate;

[0035] Figure 8 This is a three-dimensional structural diagram of the range hood in Embodiment 4 of this utility model, omitting the air inlet panel and air guide plate;

[0036] Figure 9This is a cross-sectional view of the range hood of Embodiment 4 of this utility model, cut along the front-to-back direction, omitting the air inlet panel and air guide plate;

[0037] Figure 10 This is a side view of the range hood of Embodiment 4 of this utility model from a perspective parallel to the impeller axis, omitting the air inlet panel and the air guide plate. Detailed Implementation

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0039] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0040] Example 1

[0041] Figures 1-5 This illustration shows a preferred embodiment of the side-draft range hood of the present invention. The side-draft range hood of this embodiment includes a housing 10 and a fan system 4. An air inlet panel 20, sloping downwards and backwards, is provided on the front side of the housing 10. A guide plate 3, extending backwards to the rear of the top of the air inlet panel 20 and then folding downwards, is provided on the top of the front side of the housing 10. The gap between the guide plate 3 and the air inlet panel 20 forms a first air inlet 11. A support plate 33, extending horizontally forwards, extends from the bottom of the guide plate 3 and abuts against the inner wall of the air inlet panel 20. Multiple first air inlet holes 330, spaced apart laterally, are provided on the lower part of the guide plate 3 and the support plate 33, and the holes are connected to form an overall L-shaped air inlet.

[0042] The fan system 4 includes a volute 41, an impeller 42, and a motor. The impeller 42 is located inside the volute 41 and is driven to rotate by the motor. In this embodiment, the fan system 4 is inclined downwards and forwards, that is, the axis of the impeller 42 is slightly inclined downwards and forwards relative to the horizontal direction.

[0043] The upper edge of the air inlet panel 20 is approximately adjacent to the top plate of the housing 10, and the lower edge is adjacent to the bottom wall of the housing 10 (i.e., the position for holding the oil cup, not shown). The inner side of the air inlet panel 20 abuts against the support plate 33 at a position lower than the upper edge of the air inlet panel 20. The portion of the upper part of the air inlet panel 20 extending upward from this abutting position (the position abutting against the support plate 33) forms a shielding portion 21, which can shield the first air inlet hole 330 at the lower part of the air guide plate 3 and the first air inlet hole 330 on the support plate 33 (not visible from the front). The air guide plate 3 is composed of an upper extension plate 31 extending forward and backward and a lower extension plate 32 extending downward from its rear edge. The lower extension plate 32 is inclined backward from top to bottom. Specifically, the inclination direction of the lower extension plate 32 is basically consistent with the inclination direction of the air inlet panel 20, while the support plate 33 is basically perpendicular to the lower extension plate 32 (air inlet panel 20).

[0044] The lower part of the air inlet panel 20 of the housing 10, near the bottom wall of the housing 10, has two symmetrical air inlet recesses 220. The top wall of the air inlet recess extends horizontally from front to back, and a second air inlet hole 221 is opened on it. There are multiple second air inlets 221, arranged sequentially in the left-right direction. The vertical cross-section of the air inlet recess 220 in the front-back direction is triangular, and the bottom wall of the air inlet recess 220 slopes upward from front to back, forming a guide wall. The front opening of the air inlet recess 220 can be understood as the second air inlet 22. The lower edge of the air inlet panel 20 covers the top wall of the air inlet recess 220 and the second air inlet hole 221 located thereon (not visible from the front). A rectangular guide plate 5 is provided inside the housing 10. Its left and right sides are sealed to the side walls of the housing 10, its top is connected to the top wall of the housing 10, and its bottom is folded forward and extends to seal with the inner side wall of the air inlet panel 20. The edge of the bottom of the guide plate 5 that is folded forward is the guide fold edge 51.

[0045] In this embodiment, the guide plate 5 is close to the front wall of the volute 41 and has an opening that is directly opposite the front air inlet 411 of the volute 41. The connection point between the guide flange of the guide plate 5 and the inner side wall of the air inlet panel 20 is lower than the lowest point of the front air inlet 411 of the volute 41.

[0046] In this embodiment, the guide plate 5 divides the internal space of the housing 10 into a first air intake channel 101 and a second air intake channel 102 arranged in a front-to-back manner. The first air intake channel 101 and the second air intake channel 102 are independent. The first air intake channel 101 connects the first air intake 11 and the front air intake 411 of the volute 41, while the second air intake channel 102 connects the second air intake 22 and the rear air intake 412 of the volute 41.

[0047] In this embodiment, two independent airflow paths are physically separated by the guide plate 5. The upper first air inlet 11 and the first air inlet channel 101 are mainly responsible for capturing the rapidly rising main oil fumes, while the lower second air inlet 22 and the second air inlet channel 102 are mainly responsible for capturing the lower-positioned, easily diffused secondary oil fumes or scattered oil fumes. The dual-channel design can simultaneously cover oil fumes at different heights and in different areas, significantly reducing oil fume escape, especially improving the smoke extraction effect for large amounts of oil fumes or wide cookware. In particular, the two independent air inlet channels can effectively reduce mutual interference between the upper and lower airflows, allowing the airflow to be guided more smoothly to different inlets of the fan casing 41, potentially reducing noise and energy consumption.

[0048] Example 2

[0049] Figure 6 Another embodiment of the side-suction range hood of this utility model is shown. The difference between this embodiment and the previous one is that the structure of the guide plate 5 is adjusted based on embodiment 1. The width of the lower part of the guide plate 5 gradually decreases from top to bottom, and its outer periphery is bent forward along the whole to form an arc-shaped guide edge 51. The guide edge 51 closely abuts against the inner wall of the air inlet panel 20, and the distance between its left and right sides gradually decreases from top to bottom, forming a tapered inlet. The rest of the structure is the same as in embodiment 1.

[0050] Example 3

[0051] Figure 7 Another embodiment of the side-suction range hood of this utility model is shown. The difference between this embodiment and the previous one is that the structure of the guide plate 5 is adjusted based on the previous one. Similar to the previous one, the width of the lower part of the guide plate 5 in this embodiment gradually decreases from top to bottom. The difference from the previous one is that the lower part of the guide plate 5 in this embodiment adopts a straight folded edge design. The guide folded edge 51 includes a horizontally extending bottom folded edge 511 and side folded edges 512 extending obliquely upward from its left and right ends respectively. The side folded edges 512 are plate structures extending on the same plane, wherein the front and rear dimensions of the side folded edges 512 gradually decrease from top to bottom, while the front and rear dimensions of the bottom folded edge 511 of the guide folded edge 51 are the smallest.

[0052] Example 4

[0053] Figures 8-10Another embodiment of the side-suction range hood of this utility model is shown. The difference between this embodiment and the previous one is that the structure of the guide plate 5 is adjusted based on the first embodiment. Similar to the third embodiment, the width of the lower part of the guide plate 5 in this embodiment gradually decreases from top to bottom, and a straight folded edge design is adopted. Specifically, the side folded edge 512 of the guide folded edge 51 includes a first inclined folded edge 5121 and a second inclined folded edge 5122 connected from top to bottom, wherein the angle between the first inclined folded edge 5121 and the horizontal plane is smaller than the angle between the second inclined folded edge 5122 and the horizontal plane. For example, the angle between the first inclined folded edge 5121 and the horizontal plane can be 45°, and the angle between the second inclined folded edge 5122 and the horizontal plane can be 60°. In this embodiment, the position where the first inclined flange 5121 and the second inclined flange 5122 meet is located below the axis of the impeller 42. The angle formed by the line connecting the position where the first inclined flange 5121 and the second inclined flange 5122 meet and the center of the impeller 42 with the horizontal plane is denoted as A. The value range of angle A is 20°≤A≤70°, and the preferred value range of A is 30°≤A≤70°, specifically A=40°. The above structural design ensures that the inlet 411 of the volute 41 is not excessively obstructed, thus guaranteeing the overall flow performance of the airflow in this area. This embodiment also optimizes the parameters of the guide flange 51. The flange length at the position where the first inclined flange 5121 and the second inclined flange 5122 meet is L1, and the flange length at the bottom position of the guide flange 51 is L2. Considering that the guide flange 51 is relatively long at the corner to provide a sufficiently spacious air intake channel, but the length of the guide flange 51 is also limited by the aforementioned tilt angle A, a balanced approach is needed to obtain the optimal overall performance. As an improvement, L1 and L2 satisfy the condition: 3≤L1 / L2≤5, such as L1=30mm, L2=10mm (L1 / L2=3). The remaining structure is the same as in Example 1.

Claims

1. A side-draft range hood, comprising: The housing (10) has an air inlet panel (20) that slopes backward from top to bottom on the front side. The housing (10) has a first air inlet (11) formed on the upper part of the air inlet panel (20) and a second air inlet (22) formed on the lower part of the air inlet panel (20). The fan system (4) is located inside the housing (10) and includes a volute (41) having a front air inlet (411) facing the air inlet panel (20) and a rear air inlet (412) away from the air inlet panel (20). The feature is that: a guide plate (5) is provided inside the housing (10), and the guide plate (5) divides the internal space of the housing (10) into a first air inlet channel (101) and a second air inlet channel (102) arranged in sequence. The first air inlet channel (101) connects the first air inlet (11) with the front air inlet (411) of the volute (41), and the second air inlet channel (102) connects the second air inlet (22) with the rear air inlet (412) of the volute (41).

2. The side-suction range hood according to claim 1, characterized in that: The front top of the housing (10) has an air guide plate (3) that extends rearward to the rear top of the air inlet panel (20) and then folds down. The gap between the air guide plate (3) and the air inlet panel (20) forms the first air inlet (11).

3. The side-suction range hood according to claim 2, characterized in that: The bottom of the air guide plate (3) also has a support plate (33) that extends forward and abuts against the inner sidewall of the air inlet panel (20). The support plate (33) and / or the lower part of the air guide plate (3) are provided with a plurality of first air inlet holes (330) arranged sequentially and at intervals in the left and right direction.

4. The side-suction range hood according to claim 3, characterized in that: The first air inlet (330) on the support plate (33) is connected to the first air inlet (330) at the bottom of the air guide plate (3) to form an air inlet that is L-shaped as a whole.

5. The side-suction range hood according to claim 3, characterized in that: The inner side of the air inlet panel (20) that abuts against the support plate (33) is lower than the upper edge of the air inlet panel (20). The upper part of the air inlet panel (20) extending upward from the position that abuts against the support plate (33) is called the shielding part (21). The first air inlet hole (330) opened at the lower part of the air guide plate (3) is shielded by the shielding part (21) and is not visible from the front.

6. The side-suction range hood according to claim 5, characterized in that: The air guide plate (3) includes an upper extension plate (31) that extends forward and backward and is located above the air inlet panel (20) and a lower extension plate (32) that extends downward from the rear edge of the upper extension plate (31), the lower extension plate (32) being inclined backward from top to bottom.

7. The side-suction range hood according to claim 1, characterized in that: The lower part of the air inlet panel (20) has an air inlet recess (220) that is recessed toward the bottom wall of the housing (10) in the region adjacent to the bottom wall of the housing (10). The top wall of the air inlet recess (220) extends from front to back and has a second air inlet hole (221). The second air inlet hole (221) of the air inlet recess (220) is blocked by the lower edge of the air inlet panel (20) and is not visible from the front.

8. The side-suction range hood according to claim 7, characterized in that: There are two air inlet recesses (220), which are located on the left and right sides of the lower part of the air inlet panel (20).

9. The side-suction range hood according to any one of claims 1 to 8, characterized in that: The guide plate (5) is attached to the front side wall of the volute (41) and has an opening opposite to the inlet (411) of the volute (41).

10. The side-suction range hood according to any one of claims 1 to 8, characterized in that: The guide plate (5) is rectangular in shape. The left and right sides of the guide plate (5) are connected to the left and right side walls of the housing (10). The top edge of the guide plate (5) is connected to the top wall of the housing (10). The bottom edge of the guide plate (5) is folded forward and extends to connect with the inner side wall of the air inlet panel (20).

11. The side-suction range hood according to claim 10, characterized in that: The position where the air inlet panel (20) meets the lower edge of the guide plate (5) is lower than the lowest point of the front air inlet (411) of the volute (41).

12. The side-suction range hood according to any one of claims 1 to 8, characterized in that: The left and right dimensions of at least the lower region of the guide plate (5) gradually decrease from top to bottom, and the outer periphery of the lower region of the guide plate (5) is formed with a guide flange (51) that bends forward and abuts against the inner sidewall of the air inlet panel (20).

13. The side-suction range hood according to claim 12, characterized in that: The guide flange (51) is arc-shaped, and the left and right spacing of the guide flange (51) gradually decreases from top to bottom.

14. The side-suction range hood according to claim 12, characterized in that: The guide flange (51) includes a bottom flange (511) located at the bottom and extending in the left-right direction, and side flanges (512) that slope from bottom to top to the left and right sides respectively from the bottom flange (511).

15. The side-suction range hood according to claim 14, characterized in that: The side fold (512) includes a first inclined fold (5121) and a second inclined fold (5122) connected sequentially from top to bottom. The inclination angle of the first inclined fold (5121) relative to the horizontal direction is smaller than the inclination angle of the second inclined fold (5122) relative to the horizontal direction.

16. The side-suction range hood according to claim 15, characterized in that: The fan system also includes an impeller (42) located inside the volute (41). The position where the first inclined fold (5121) and the second inclined fold (5122) meet is located horizontally below the axis of the impeller (42). The position where the first inclined fold (5121) and the second inclined fold (5122) meet is called the fold position. The angle formed by the line connecting the fold position and the center of the impeller (42) and the horizontal plane is called A. The value range of the angle A is: 20°≤A≤70°.

17. The side-suction range hood according to claim 16, characterized in that: The fold length at the junction of the first inclined fold (5121) and the second inclined fold (5122) is denoted as L1, and the minimum fold length of the guide fold (51) is located at the bottom and is denoted as L2, where 3≤L1 / L2≤5.

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