Range hood

Abstract

The utility model provides a range hood which comprises a fan assembly and an air inlet cavity assembly, the air inlet cavity assembly comprises a lower shell, a first air inlet hole and a second air inlet hole are formed in the lower shell, and the range hood further comprises a separation part, a first air outlet hole and a second air outlet hole, the partition part covers the first air inlet hole, the first air inlet hole is communicated with the fan assembly through the partition part, an outlet of the partition part is located in an outlet of the lower shell, the size of the outlet of the partition part is smaller than that of the outlet of the lower shell, the second air inlet hole is formed in the side portion of the lower shell, and the first air inlet hole is communicated with the fan assembly through the partition part. The second air inlet holes and the separation part are staggered in the height direction of the range hood, the second air inlet holes are connected with the fan assembly through the remaining outlets of the lower shell, and the size of the remaining outlets of the lower shell in the thickness direction of the range hood is smaller than that of the outlets of the separation part. Therefore, the air inlet resistance of the fan assembly is reduced, and the lampblack adsorption effect of the range hood is guaranteed.

Description

Technical Field

[0001] The utility model particularly relates to a range hood. Background Art

[0002] The range hood is a household appliance commonly used in family kitchens. The range hood includes a fan assembly and an air intake cavity assembly, wherein an air intake hole is provided on the air intake cavity assembly corresponding to the cooker. In the existing air intake cavity assembly, a plurality of air intake holes are usually provided, and the plurality of air intake holes are located at different positions at the bottom of the air intake cavity assembly. Since the sizes of the plurality of air intake holes are inconsistent, the amount of air entering the air intake cavity assembly from different directions is also different. In order to ensure the effective absorption of the oil smoke generated by the cooker cooking, the air intake holes close to the cooker are usually set larger, while the sizes of the air intake holes at other positions are set smaller. However, in actual use, it is found that the air intake holes with larger sizes will affect the air intake resistance of the air intake holes with smaller sizes when the air is entering. Specifically, after the airflow enters the air intake cavity assembly, since the air intake volume of the air intake holes with larger sizes is larger and the flow rate is faster, it will hinder the airflow entering through the air intake holes with smaller sizes from flowing into the fan assembly, that is, the airflow velocity entering through the air intake holes with smaller sizes is lower. On this basis, the air intake volume of the fan assembly is also reduced accordingly, and the effect of the range hood absorbing oil smoke is deteriorated. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a range hood in order to overcome the defect of poor air intake efficiency of a fan assembly in the prior art.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] A range hood, comprising a fan assembly and an air inlet chamber assembly, wherein the air inlet chamber assembly comprises a lower shell, and the lower shell is provided with a first air inlet hole and a second air inlet hole, and the range hood further comprises:

[0006] A partition, wherein the partition cover is arranged on the first air inlet hole and the first air inlet hole is connected with the fan assembly through the partition, the outlet of the partition is located in the outlet of the lower shell, the outlet size of the partition is smaller than the outlet size of the lower shell, the second air inlet hole is arranged on the side of the lower shell, and the second air inlet hole and the partition are staggered along the height direction of the range hood, the second air inlet hole is connected with the fan assembly through the remaining outlet of the lower shell, and the remaining outlet size of the lower shell along the thickness direction of the range hood is smaller than the outlet size of the partition.

[0007] In this solution, a partition is provided to separate the air inlet chamber assembly, wherein the airflow flowing in from the first air inlet hole and the airflow flowing in from the second air inlet hole do not affect each other, thereby reducing the air inlet resistance of the fan assembly and realizing a reasonable distribution of the air volume in the air inlet chamber assembly. On this basis, the first air inlet hole and the second air inlet hole do not interfere with each other, so that the air intake volume entering the fan assembly is increased accordingly, ensuring the effect of the range hood in absorbing oil smoke, thereby improving the user experience. In addition, the redundant flow of the original first air inlet hole can enter the air inlet chamber assembly through the second air inlet hole, so that the area where the second air inlet hole is located can effectively absorb oil smoke and prevent oil smoke from escaping.

[0008] Preferably, the outlet of the lower shell along the width direction of the range hood is the same size as the partition, and the outlet size of the partition along the thickness direction of the range hood is H, and the remaining outlet size of the lower shell is h, and H=1.9-2.1h.

[0009] In this solution, the dimensions of the partition outlet and the remaining lower shell outlet are limited to ensure effective distribution of the air flow rate in the air intake chamber assembly, thereby reducing the air intake resistance of the fan assembly.

[0010] Preferably, the inlet size of the partition is larger than the outlet size of the partition.

[0011] In this solution, through the above arrangement, sufficient airflow can enter the partition.

[0012] Preferably, the bottom of the lower shell has a recessed portion recessed toward the air inlet chamber assembly, the first air inlet hole is arranged at the bottom of the recessed portion, the second air inlet hole is arranged at the side of the recessed portion, the partition cover is arranged at the bottom of the recessed portion, and the size of the partition is less than or equal to the bottom size of the recessed portion.

[0013] In this solution, the above-mentioned arrangement is used to prevent the edge of the partition from extending from the side of the recessed portion and being suspended, thereby ensuring the partitioning effect of the partition on the air intake cavity assembly and preventing the airflows from affecting each other and reducing the air intake resistance entering the fan assembly.

[0014] Preferably, there is a gap between the edge of the partition and the bottom of the recessed portion, and the size of the gap is no greater than 2 mm.

[0015] In this solution, through the above arrangement, the airflows on both sides of the partition are isolated from each other with a gap of less than 2 mm.

[0016] Preferably, the gap size is not less than 0.5 mm.

[0017] In this solution, through the above arrangement, the partition part does not need to abut against the bottom of the recessed part, thereby preventing the recessed part from being affected by the gravity of the partition part, thereby improving the reliability of the structure.

[0018] Preferably, the partition includes a guide portion and an outlet, the outlet of the partition portion extends along the height direction of the range hood, the guide portion is arranged obliquely along the height direction of the range hood and the guide portion is enclosed to form a trumpet-shaped structure.

[0019] In this solution, the above arrangement is used to guide the airflow flowing in from the first air inlet. In addition, the inclined arrangement of the guide portion can also guide the oil accumulated on the fan assembly from the surface of the guide portion to the edge of the recessed portion, thereby preventing the oil from dripping into the cooker from the first air inlet.

[0020] Preferably, the bottom dimension of the recessed portion is smaller than the bottom dimension of the lower shell body.

[0021] In this solution, the above arrangement is adopted to achieve staggered arrangement of the second air inlet and the partition.

[0022] Preferably, the lower shell further comprises an oil guide groove, the oil guide groove is arranged around the outer circumference of the recessed portion, and the bottom of the oil guide groove is lower than the plane where the bottom of the recessed portion is located.

[0023] In this solution, the above arrangement is used to guide the oil stains to prevent the oil stains from accumulating and dripping into the stove from the second air inlet hole.

[0024] Preferably, the size of the first air inlet hole is larger than the size of the second air inlet hole.

[0025] In this solution, through the above-mentioned settings, the air intake amount entering the fan assembly from the first air inlet hole is mainly, and the air intake amount entering the fan assembly from the second air inlet hole is supplementary, thereby supplementing the air intake amount of the range hood and meeting the effect of the range hood absorbing oil fumes.

[0026] The positive and progressive effect of the utility model is that the utility model separates the air intake chamber assembly by setting a partition, wherein the airflow flowing in from the first air intake hole and the airflow flowing in from the second air intake hole do not affect each other, thereby reducing the air intake resistance of the fan assembly and realizing the reasonable distribution of the air volume in the air intake chamber assembly. On this basis, the first air intake hole and the second air intake hole do not interfere with each other, so that the air intake volume entering the fan assembly is increased accordingly, ensuring the effect of the range hood absorbing oil smoke, thereby improving the user experience. In addition, the redundant flow of the original first air intake hole can enter the air intake chamber assembly through the second air intake hole, so that the area where the second air intake hole is located can effectively absorb oil smoke and prevent oil smoke from escaping. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1The utility model is a three-dimensional diagram of a range hood according to a preferred embodiment.

[0028] Figure 2 This is a diagram showing the positional relationship between the partition and the lower shell of a preferred embodiment of the utility model.

[0029] Figure 3 This is a diagram showing the positional relationship between the separator outlet and the lower shell outlet of a preferred embodiment of the utility model.

[0030] Figure 4 It is a three-dimensional diagram of a partition portion of a preferred embodiment of the utility model.

[0031] Figure 5 This is a diagram showing the positional relationship between the recessed portion and the lower shell of a preferred embodiment of the utility model.

[0032] Figure 6 This is a diagram showing the positional relationship between the oil guide groove and the recessed portion of a preferred embodiment of the utility model.

[0033] Figure 7 It is a top view of the lower shell of a preferred embodiment of the utility model.

[0034] Description of reference numerals:

[0035] Range hood 100

[0036] Fan assembly 10

[0037] Air intake chamber assembly 20

[0038] Lower housing 21

[0039] First air inlet 211

[0040] Second air inlet 212

[0041] Partition 1

[0042] Guide part 11

[0043] Exit 12

[0044] Depression 2

[0045] Oil guide groove 3 DETAILED DESCRIPTION

[0046] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0047] This embodiment provides a range hood 100, the specific structure of which is as follows Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the range hood 100 includes a fan assembly 10 and an air inlet chamber assembly 20, the air inlet chamber assembly 20 includes a lower shell 21, and the lower shell 21 is provided with a first air inlet hole 211 and a second air inlet hole 212. The range hood 100 also includes:

[0048] Partition 1, the partition 1 is covered on the first air inlet hole 211 and the first air inlet hole 211 is connected with the fan assembly 10 through the partition 1, the outlet 12 of the partition 1 is located in the outlet of the lower shell 21, the size of the outlet 12 of the partition 1 is smaller than the outlet size of the lower shell 21, the second air inlet hole 212 is arranged on the side of the lower shell 21, and the second air inlet hole 212 and the partition 1 are staggered along the height direction of the range hood 100, the second air inlet hole 212 is connected with the fan assembly 10 through the remaining outlet of the lower shell 21, and the size of the remaining outlet of the lower shell 21 along the thickness direction of the range hood 100 is smaller than the size of the outlet 12 of the partition 1.

[0049] Specifically, the partition 1 is disposed in the lower shell 21 of the air inlet chamber assembly 20 to separate the internal space of the air inlet chamber assembly 20 to form two flow channels. One of the flow channels is connected to the first air inlet hole 211 to separately guide the airflow from the first air inlet hole 211 to the inlet of the fan assembly 10, to prevent the airflow from the first air inlet hole 211 from being affected by the airflow from the second air inlet hole 212, and to ensure the airflow velocity from the first air inlet hole 211. Similarly, the other flow channel separately guides the airflow from the second air inlet hole 212 to the inlet of the fan assembly 10, so that the airflow from the first air inlet hole 211 and the airflow from the second air inlet hole 212 do not affect each other. In the case where the partition 1 is not provided in the air inlet chamber assembly 20 and multiple air flows meet in the air inlet chamber assembly 20 and reduce the air flow velocity entering the fan assembly 10, the provision of the partition 1 can reduce the air intake resistance of the fan assembly 10 and achieve a reasonable distribution of the air volume in the air inlet chamber assembly 20. On this basis, the first air inlet hole 211 and the second air inlet hole 212 do not interfere with each other, so that the air intake volume entering the fan assembly 10 is increased accordingly, ensuring the effect of the range hood 100 in absorbing oil smoke, thereby improving the user experience. The partition 1 can adopt a sleeve structure in the prior art, or other baffle structures.

[0050] It should be noted that, in the present embodiment, the outlet 12 of the partition 1 is consistent in shape with the outlet of the lower shell 21 for connecting the fan assembly 10, and the outlet 12 of the partition 1 occupies part of the outlet of the lower shell 21, which not only makes the internal space of the air inlet cavity assembly 20 divided by the partition 1, but also makes the outlet of the lower shell 21 divided by the partition 1, and the airflows from the first air inlet hole 211 and the second air inlet hole 212 do not affect each other when flowing to the fan assembly 10.

[0051] In addition, due to the setting of the partition 1, the redundant flow in the area outside the lower shell 21 near the first air inlet hole 211 makes the second air inlet hole 212 not affected by the air intake of the first air inlet hole 211, and the corresponding redundant flow can enter the air intake cavity assembly 20 through the area where the second air inlet hole 212 is located, so that the area where the second air inlet hole 212 is located can effectively absorb oil smoke and prevent the oil smoke from escaping.

[0052] In this embodiment, the outlet of the upper and lower shells 21 along the width direction of the range hood 100 is the same size as the partition 1, while the outlet 12 of the partition 1 along the thickness direction of the range hood 100 is H, and the outlet size of the remaining lower shell 21 is h, and H=1.9-2.1h.

[0053] Specifically, the outlet 12 of the partition 1 is a rectangular hole, and the outlet of the lower shell 21 is also a rectangular hole. The thickness direction of the range hood 100 is the direction between the front plate and the rear plate of the range hood 100. It should be noted that the first air inlet 211 is arranged close to the cooker, so that the flow rate from the first air inlet 211 into the air inlet chamber assembly 20 is larger, and then the partition 1 is covered with the first air inlet 211 and flows to the fan assembly 10 through the outlet 12 of the partition 1 alone, and the outlet 12 of the partition 1 is set larger, that is, about twice the size of the remaining outlet of the lower shell 21 for communicating with the second air inlet 212. According to the finite element analysis software in the prior art, the analysis test shows that when the size of the outlet 12 for communicating with the first air inlet 211 is larger than twice the size of the outlet for communicating with the second air inlet 212, on the one hand, it can ensure that the air intake into the fan assembly 10 is sufficient; on the other hand, the effective distribution of the air flow in the air inlet chamber assembly 20 can reduce the air intake resistance of the fan assembly 10. Finite element analysis software belongs to the prior art, and this embodiment does not improve it, so it will not be described in detail here.

[0054] In this embodiment, the inlet size of the partition 1 is larger than the outlet 12 size of the partition 1. Compared with the conventional flow channel having the same size in each section, the inlet size of the partition 1 in this embodiment is larger than the outlet 12 size, so that sufficient airflow can enter the partition 1 to meet the air intake requirement of the fan assembly 10.

[0055] In this embodiment, the bottom of the lower shell 21 has a recessed portion 2 recessed toward the air inlet chamber assembly 20, the first air inlet hole 211 is arranged at the bottom of the recessed portion 2, the second air inlet hole 212 is arranged at the side of the recessed portion 2, the partition portion 1 is covered at the bottom of the recessed portion 2, and the size of the partition portion 1 is less than or equal to the bottom size of the recessed portion 2.

[0056] Specifically, the recessed portion 2 is a rectangular groove that is recessed toward the air inlet chamber assembly 20 from the bottom of the lower shell 21. The bottom of the groove is the bottom of the recessed portion 2, and the side wall of the groove is the side of the recessed portion 2. The partition 1 is covered at the bottom of the recessed portion 2, and the size of the partition 1 is less than or equal to the bottom size of the recessed portion 2. The second air inlet hole 212 is arranged on the side of the recessed portion 2 to achieve the staggered arrangement of the second air inlet hole 212 and the partition 1. That is to say, the edge of the partition 1 has a certain distance from the side of the recessed portion 2 to avoid the edge of the partition 1 extending from the side of the recessed portion 2 and being suspended in the air, thereby ensuring the partition effect of the partition 1 on the air inlet chamber assembly 20, preventing the airflow flowing in from the second air inlet hole 212 and the airflow flowing in from the first air inlet hole 211 from affecting each other and reducing the air intake resistance entering the fan assembly 10. Furthermore, by providing the recessed portion 2, when oil accumulates in the fan assembly 10 and drips into the recessed portion 2, the oil can be diverted to prevent the oil from accumulating and not flowing.

[0057] It is understandable that in this embodiment, the first air inlet 211 is staggered with the outlet 12 of the partition 1 along the height direction of the range hood 100, also to prevent the fan assembly 10 from accumulating oil and dirt and dripping from the first air inlet 211 onto the stove.

[0058] In this embodiment, there is a gap between the edge of the partition 1 and the bottom of the recessed portion 2, and the size of the gap is not less than 0.5 mm and not more than 2 mm.

[0059] Specifically, along the height direction of the range hood 100, there is a gap between the edge of the partition 1 and the bottom of the recessed portion 2, that is, the partition 1 does not abut against the bottom of the recessed portion 2. According to the finite element software analysis test in the prior art, the gap is set within 2 mm to isolate the airflows on the inner and outer sides of the partition 1. At the same time, the partition 1 does not need to abut against the bottom of the recessed portion 2, thereby preventing the recessed portion 2 from being affected by the gravity of the partition 1, thereby improving the reliability of the structure.

[0060] In this embodiment, the partition 1 includes a guide portion 11 and an outlet 12. The outlet 12 of the partition 1 extends along the height direction of the range hood 100. The guide portion 11 is inclined along the height direction of the range hood 100 and encloses a trumpet-shaped structure.

[0061] Specifically, since the size of the inlet of the partition 1 is larger than the size of the outlet 12, and the guide portion 11 disposed near the inlet is inclined along the height direction of the range hood 100, the guide portion 11 is enclosed to form a trumpet-shaped structure, and the outlet 12 is disposed along the height direction of the range hood 100, so that the airflow in the partition 1 can flow smoothly into the fan assembly 10, reducing the air intake resistance of the fan assembly 10. It can be understood that the guide portion 11 can guide the airflow in the partition 1 and finally flow to the outlet 12. In addition, the inclined arrangement of the guide portion 11 can also guide the oil accumulated in the fan assembly 10 from the surface of the guide portion 11 to the edge of the recessed portion 2, preventing the oil from dripping into the stove from the first air inlet hole 211.

[0062] It should be noted that the inclination angle of the guide portion 11 will not affect the flow rate and flow rate of the airflow flowing from the second air inlet hole 212 into the outlet of the remaining lower shell 21. This is because the end of the partition 1 with the largest size is the inlet of the partition 1, and the inlet size of the partition 1 is smaller than the bottom size of the recessed portion 2, that is, the partition 1 will not be suspended from the side of the recessed portion 2, and will not affect the airflow flowing from the second air inlet hole 212 into the outlet of the remaining lower shell 21, thereby avoiding excessive air intake resistance of the fan assembly 10.

[0063] Furthermore, the bottom size of the recessed portion 2 is smaller than the bottom size of the lower shell 21. The bottom size of the lower shell 21 is the bottom size of the air inlet chamber assembly 20, so that the groove formed by the recessed portion 2 at the bottom of the lower shell 21 is set to be smaller than the bottom size of the lower shell 21, so that the bottom of the lower shell 21 can also reserve a position for setting the second air inlet hole 212, and the second air inlet hole 212 is staggered with the partition 1. Similarly, other structures can be set in the reserved bottom area of ​​the lower shell 21 to reasonably utilize the space of the air inlet chamber assembly 20.

[0064] In this embodiment, the lower shell 21 further includes an oil guide groove 3 , which is arranged around the outer circumference of the recessed portion 2 , and the bottom of the oil guide groove 3 is lower than the plane where the bottom of the recessed portion 2 is located.

[0065] Specifically, the bottom of the recessed portion 2 is tilted relative to the top plate of the lower shell 21, and accordingly, the oil guide groove 3 is tilted in the bottom area of ​​the lower shell 21 reserved on the outer peripheral side of the recessed portion 2, and the oil flows from the bottom of the recessed portion 2 into the side of the recessed portion 2 and into the oil guide groove 3, so as to guide the oil dripping on the bottom of the recessed portion 2. It can be understood that in this embodiment, the second air inlet hole 212 is arranged on the side of the recessed portion 2, and the second air inlet hole 212 is arranged at a height higher than the bottom of the oil guide groove 3, so as to prevent the oil from dripping into the stove from the second air inlet hole 212 when guiding the oil.

[0066] In this embodiment, the size of the first air inlet 211 is larger than that of the second air inlet 212. The air intake from the first air inlet 211 to the fan assembly 10 is mainly supplemented by the air intake from the second air inlet 212, so as to supplement the air intake of the range hood 100 and achieve the effect of the range hood 100 absorbing oil smoke.

[0067] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A range hood, comprising a fan assembly and an air inlet chamber assembly, wherein the air inlet chamber assembly comprises a lower shell, and the lower shell is provided with a first air inlet hole and a second air inlet hole, wherein: The range hood also includes: A partition, wherein the partition cover is arranged on the first air inlet hole and the first air inlet hole is connected with the fan assembly through the partition, the outlet of the partition is located in the outlet of the lower shell, the outlet size of the partition is smaller than the outlet size of the lower shell, the second air inlet hole is arranged on the side of the lower shell, and the second air inlet hole and the partition are staggered along the height direction of the range hood, the second air inlet hole is connected with the fan assembly through the remaining outlet of the lower shell, and the remaining outlet size of the lower shell along the thickness direction of the range hood is smaller than the outlet size of the partition.

2. The range hood according to claim 1, characterized in that: The outlet of the lower shell along the width direction of the range hood is the same size as the partition, while the outlet size of the partition along the thickness direction of the range hood is H, and the remaining outlet size of the lower shell is h, and H=1.9-2.1h.

3. The range hood according to claim 2, characterized in that: The inlet size of the partition is larger than the outlet size of the partition.

4. The range hood according to claim 3, characterized in that: The bottom of the lower shell has a recessed portion recessed toward the air inlet chamber assembly, the first air inlet hole is arranged at the bottom of the recessed portion, the second air inlet hole is arranged at the side of the recessed portion, the partition cover is arranged at the bottom of the recessed portion, and the size of the partition is less than or equal to the bottom size of the recessed portion.

5. The range hood according to claim 4, characterized in that: There is a gap between the edge of the partition and the bottom of the recessed portion, and the size of the gap is no greater than 2 mm.

6. The range hood according to claim 5, characterized in that: The gap size is not less than 0.5 mm.

7. The range hood according to claim 1, characterized in that: The partition includes a guide portion and an outlet. The outlet of the partition extends along the height direction of the range hood. The guide portion is arranged obliquely with respect to the height direction of the range hood and is enclosed to form a trumpet-shaped structure.

8. The range hood according to claim 4, characterized in that: The bottom dimension of the recessed portion is smaller than the bottom dimension of the lower shell body.

9. The range hood according to claim 8, characterized in that: The lower shell also includes an oil guide groove, which is arranged around the outer circumference of the recessed portion, and the bottom of the oil guide groove is lower than the plane where the bottom of the recessed portion is located.

10. The range hood according to claim 1, characterized in that: The size of the first air inlet hole is greater than the size of the second air inlet hole.

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