Ventilating device

Abstract

This utility model provides a ventilation device, including: a body; a panel assembly connected to the body; an air inlet for airflow to enter the body, the air inlet including a main air inlet and a secondary air inlet; a main air inlet duct disposed downstream of the main air inlet and configured to guide the airflow entering through the main air inlet; a secondary air inlet duct disposed downstream of the secondary air inlet and configured to guide the airflow entering through the secondary air inlet; the main air inlet duct and the secondary air inlet duct are isolated from each other.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to a ventilation device. Background Technology

[0002] CN211822681U discloses a heater with a linear air vent and its assembly structure.

[0003] like Figure 1 As shown, the air inlet is elongated and located on the bottom surface of the casing. The air inlet and air outlet are arranged parallel to each other, and both the air inlet and air outlet of the air duct are connected to the indoor space.

[0004] like Figure 2 As shown, the assembly structure for the heater includes a ceiling-mounted keel assembly (not shown) and a decorative panel suspended below the keel assembly. Adjacent decorative panels are joined together, with a long, narrow groove pre-drilled between their adjacent edges. Air inlets and outlets pass through this groove from top to bottom, connecting to the interior space. Connecting plates are fitted onto the air inlets and outlets, inserting into the grooves and sealing the gaps between the air inlet and the inner wall of the groove, and between the air outlet and the inner wall of the groove. Once installed, the lower ends of both the air inlet and outlet are flush with the bottom surface of the decorative panel, creating a smooth decorative surface and enhancing aesthetics.

[0005] However, to ensure aesthetics, the air inlet area of ​​the heater is limited, which affects the air volume. Utility Model Content

[0006] In view of the above-mentioned technical problems, the present invention provides a ventilation device that can increase the air intake area, reduce turbulence, and ensure air volume.

[0007] This utility model provides a ventilation device, comprising: a body; a panel assembly connected to the body; an air inlet for airflow to enter the body, the air inlet including a main air inlet and a secondary air inlet; a main air inlet duct disposed downstream of the main air inlet and configured to guide the airflow entering through the main air inlet; a secondary air inlet duct disposed downstream of the secondary air inlet and configured to guide the airflow entering through the secondary air inlet; the main air inlet duct and the secondary air inlet duct are isolated from each other.

[0008] In some illustrative embodiments, the main air inlet includes: a first main air inlet disposed on the panel assembly; and a second main air inlet disposed on the body and communicating with the first main air inlet.

[0009] In some illustrative embodiments, the ventilation device includes: a connecting portion connecting the first main air inlet and the second main air inlet; the auxiliary air inlet is located outside the connecting portion.

[0010] In some illustrative embodiments, the connecting portion extends from the bottom wall of the body toward the panel assembly and forms a surrounding surface with a hollow structure.

[0011] In some illustrative embodiments, the total area of ​​the second main air inlet is S1; the total area of ​​the secondary air inlet is S2; the area relationship between the second main air inlet and the secondary air inlet satisfies the formula: S2=K×S1; where K is the proportionality coefficient between S1 and S2, 0.2≤K≤0.35.

[0012] In some illustrative embodiments, the number of the aforementioned secondary air inlets is at least two, and the at least two secondary air inlets are located on both sides of the aforementioned second main air inlet; wherein, the area of ​​one of the at least two secondary air inlets is S. 2-1 The area of ​​the other is S 2-2 The total area of ​​the aforementioned secondary air inlets is the sum of the areas of at least two of the aforementioned secondary air inlets.

[0013] In some illustrative embodiments, the ventilation device further includes fan blades and a motor that drives the fan blades to rotate; with the plane where the extension direction of the panel assembly is located as the projection plane and the axial direction of the motor as the projection direction, the projection of the secondary air inlet and the projection of the second main air inlet both coincide with the projection of the fan blades.

[0014] In some illustrative embodiments, the secondary air inlet extends from the center of the second main air inlet in a peripheral direction and is inclined from the panel assembly side toward the body side.

[0015] In some illustrative embodiments, the body further includes a rib, which is disposed at the secondary air inlet and protrudes from the plane of the secondary air inlet toward the panel assembly.

[0016] In some illustrative embodiments, the aforementioned rib includes a first rib and a second rib spaced apart from the first rib.

[0017] In some illustrative embodiments, the first rib and the second rib form a height difference.

[0018] In some illustrative embodiments, at least a portion of the height of the first rib is higher than the height of the second rib.

[0019] In some illustrative embodiments, the height difference is the difference between the vertical height H1 of the plane where the secondary air inlet is located from the first rib and the vertical height H2 of the plane where the secondary air inlet is located from the second rib; the vertical line of H2 and H1 partially coincides; H1 and H2 satisfy the relationship: │H1-H2│>S×H1; S=0.1.

[0020] In some illustrative embodiments, the farthest endpoint of the plane where the secondary air inlet is located, which is perpendicular to the first rib, is A; the farthest endpoint of the plane where the secondary air inlet is located, which is perpendicular to the second rib, is B; the extension of the line connecting A and B is y2; and y2 is parallel to the plane where the secondary air inlet is located.

[0021] In some illustrative embodiments, the horizontal line is set as x, the plane where the secondary air inlet is located and the diagonal line is y1, the slope of y1 is a, the vertical height between the plane where the secondary air inlet is located and the first convex rib is H1, y1 intersects H1 perpendicularly, x and y1 satisfy the relationship y1=ax, where a is a constant; x and y2 satisfy the relationship y2=ax+b, where b is a constant.

[0022] In some illustrative embodiments, the farthest endpoint of the plane where the secondary air inlet is located, which is perpendicular to the first rib, is A; the farthest endpoint of the plane where the secondary air inlet is located, which is perpendicular to the second rib, is B; the extension of the line connecting A and B is y2; and the extension y2 extending toward the first rib intersects the extension surface of the plane.

[0023] In some illustrative embodiments, the horizontal line of the horizontal plane is set as x, the oblique line of the plane where the secondary air inlet is located is y1, the slope of y1 is a, the vertical height between the plane where the secondary air inlet is located and the first convex rib is H1, the y1 intersects the H1 perpendicularly, the x and the y1 satisfy the relationship y1=ax, where a is a constant; the slope of y2 is ac, the x and the y2 satisfy the relationship y2=(ac)x+b, where b and c are constants.

[0024] In some illustrative embodiments, the first rib and the second rib have a length difference.

[0025] In some illustrative embodiments, there are multiple first ribs with the same length; there are multiple second ribs, and the length of each second rib gradually decreases from the middle of the secondary air inlet to both sides; the length L1 of the second rib is greater than the length L2 of the first rib.

[0026] As can be seen from the above technical solution, the ventilation device of this utility model has at least the following beneficial effects:

[0027] By setting up mutually isolated main and secondary air intake ducts, each main air intake and secondary air intake has its own independent air intake channel. This design ensures that the airflow from the main air intake and the airflow from the secondary air intake will not interfere with each other, thus reducing the turbulence phenomenon caused by air intake pressure, thereby achieving the effect of reducing noise and increasing air intake volume. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 The heater described in Background Art 1;

[0030] Figure 2 The heater and its assembly structure are described in Background Art 1;

[0031] Figure 3 This is a perspective view of the ventilation device when the air guide plate is opened according to an embodiment of the present utility model.

[0032] Figure 4 This is a cross-sectional view of the ventilation device when the air guide plate is opened according to an embodiment of the present utility model;

[0033] Figure 5 This is a cross-sectional view of the ventilation device when the air guide plate of this utility model is opened from another angle.

[0034] Figure 6 This is a partial schematic diagram of the ventilation device according to an embodiment of the present utility model;

[0035] Figure 7 This is a side view of the ventilation device according to an embodiment of the present utility model;

[0036] Figure 8 This is a perspective view of the second connecting part and the panel assembly when the air guide plate is closed according to an embodiment of the present utility model;

[0037] Figure 9 This is a perspective view of the body of the present invention according to an embodiment;

[0038] Figure 10 This is a partial schematic diagram of the bottom wall of the body according to an embodiment of the present utility model;

[0039] Figure 11 This is a partially enlarged view of the secondary air inlet in an embodiment of the present utility model;

[0040] Figure 12 This is a first embodiment of the rib of the ventilation device according to this utility model;

[0041] Figure 13 This is a second embodiment of the rib of the ventilation device according to this utility model.

[0042] Figure Labels

[0043] 1. Housing; 4. Air outlet; 5. Air inlet; 6. Buffer duct; 11. Decorative panel; 12. Connecting plate;

[0044] 200. Ventilation device; 201. Body; 2011. Bottom wall; 202. Panel assembly; 2021. Panel; 203. Air inlet; 2031. First main air inlet; 2032. Second main air inlet; 2033. Secondary air inlet; 204. Air outlet; 205. Fan blade; 206. Motor; 207. Connecting part; 2071. First connecting part; 2072. Second connecting part; 208. Rib; 2081. First rib; 2082. Second rib; 209. Main air inlet duct; 210. Secondary air inlet duct;

[0045] 300. Ceiling; 301. First space; 302. Second space. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0047] In the description of this utility model, it should be noted that the terms "vertical," "horizontal," "left," "right," "upper," "lower," "front," "rear," and similar expressions are for illustrative purposes only and do not represent the only possible embodiments. Furthermore, in the following description, the directional terms "upstream side" and "downstream side" are defined with reference to the direction of air flow within the heat exchange device.

[0048] Furthermore, the use of ordinal numbers such as "first" and "second" in the specification and claims to modify the corresponding elements does not itself imply or represent any ordinal number of the element, nor does it represent the order of one element with another element, or the order of manufacturing methods. The use of these ordinal numbers is only to enable a named element to be clearly distinguished from another element with the same name.

[0049] Furthermore, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0050] like Figure 1 and Figure 2 As shown, a heater in the related art is illustrated, which can be understood as a form of ventilation device.

[0051] like Figure 1 As shown, the air inlet 5 of the related technology is elongated and set on the bottom surface of the housing 1. The air inlet 5 and the air outlet 4 are arranged parallel to each other. Both the air inlet 5 and the air outlet 4 of the air duct are connected to the indoor space.

[0052] like Figure 2 As shown, the assembly structure for the heater includes a keel assembly (not shown) installed on the ceiling and a decorative panel 11 suspended below the keel assembly. Adjacent decorative panels 11 are joined together and a long strip-shaped through-hole is reserved between adjacent edges. The air outlet 4 and air inlet 5 pass through the through-hole from top to bottom and connect to the indoor space. A connecting plate 12 is also fitted on the air inlet 5 and air outlet 4. The connecting plate 12 is inserted into the through-hole and seals the gap between the air inlet 5 and the inner wall of the through-hole, and between the air outlet 4 and the inner wall of the through-hole. After installation, the lower end of the air inlet 5 and the lower end of the air outlet 4 are flush with the bottom surface of the decorative panel 11, thereby forming a flat decorative surface and improving aesthetics.

[0053] In the related technology, the buffer duct 6 and the housing 1 are arranged sequentially along the length direction. In order to make it more aesthetically pleasing, its air inlet 5 and air outlet 4 are both configured as strip structures. This means that the air flow path is relatively narrow, which limits the air volume and results in limited air intake and exhaust.

[0054] In addition, based on the above configuration, if the connection plate 12 and the through groove are not fitted tightly enough, forming a gap, it may obstruct airflow and increase resistance. Furthermore, this gap may also cause air leakage or uneven flow, thereby causing turbulence and noise.

[0055] Therefore, how to increase the air volume of the ventilation device and reduce the turbulence at the air inlet caused by the reduced air pressure has become an urgent technical problem to be solved.

[0056] The following is combined Figures 3 to 13 The structure of the embodiments of this utility model will be described in detail below.

[0057] like Figures 3 to 13As shown, this utility model provides a ventilation device 200, including: a body 201, a panel assembly 202, an air inlet 203, a connecting part 207, a main air inlet duct 209, and a secondary air inlet duct 210.

[0058] The ventilation device 200 can be installed between the first space 301 and the second space 302. The first space 301 and the second space 302 can be two separate spaces, for example, separated by a ceiling 300. In this embodiment, the first space 301 is the space between the building roof and the ceiling 300, and the second space 302 is the space between the ceiling 300 and the ground. In other alternative embodiments, the ventilation device 200 can also be installed in one space and fixed to the roof by a hanger or mounting bracket. The auxiliary air inlet 2033 described below can be connected to another space through a duct to isolate it from the main air inlet 203.

[0059] The following description describes the installation method of the ventilation device 200 between the first space 301 and the second space 302.

[0060] like Figure 3 As shown, the body 201, under normal installation conditions, is located within the first space 301, that is, between the building roof and ceiling 300. The body 201 includes a frame and a base plate. The frame can be formed as a box structure with a hollow structure. In other optional embodiments, the frame can be a cuboid structure with six faces: a top face, a bottom face, and four side faces located between the top and bottom faces. In this embodiment, the frame is an irregular box structure, including a top face, a bottom face, and multiple side faces connected end to end. The top face of the frame faces the roof and is away from the ceiling 300, and the bottom face of the frame faces the ceiling 300 and is away from the roof. The bottom face of the frame is parallel to the ceiling 300 and has an opening for components to be installed inside the frame. The base plate can cover the bottom opening of the frame, forming the bottom wall 2011 of the body 201.

[0061] like Figure 4 and Figure 5 As shown, the body 201 also includes a fan blade 205 and a motor 206 that drives the fan blade 205 to rotate. The fan blade 205 and the motor 206 are housed within the frame. When the motor 206 is running, it drives the fan blade 205 to rotate, thereby drawing air into the frame through the air inlet 203 and then discharging it from the air outlet 204 described below.

[0062] Panel assembly 202 is connected to body 201. Panel assembly 202 includes panel 2021. Panel 2021 is linear plate-shaped and, under normal installation, is flush with ceiling 300. Panel 2021 is provided with main air inlet 203 for airflow to enter the frame and air outlet 204 for airflow to exit the frame.

[0063] The connecting portion 207, connecting the first main air inlet 2031 and the second main air inlet 2032, is disposed within the first space 301. It extends from the bottom wall 2011 of the body 201 towards the panel assembly 202, forming a hollow enclosure. The direction of extension of this enclosure is not limited to the connecting portion 207 being located on the body 201; the connecting portion 207 can be located on the body 201 or the panel assembly 202, or both. Specifically, in other alternative embodiments, the connecting portion 207 can be located on the body 201 and connected to the panel assembly 202. Further, the connecting portion 207 can be integrally formed with the bottom wall 2011 of the body 201 and engaged with the panel assembly 202 via a snap-fit ​​or / and screw fixation. In another alternative embodiment, the connecting part 207 may be provided on the panel assembly 202 and connected to the body 201. Further, the connecting part 207 may be integrally formed with the panel 2021 and engaged with the bottom wall 2011 of the body 201 or fixed with screws.

[0064] In this embodiment, the connecting part 207 can be provided on the body 201 and the panel assembly 202, such as... Figure 6 , Figure 8 and Figure 9 and Figure 10 As shown, the connecting portion 207 may include a first connecting portion 2071 and a second connecting portion 2072, both of which have hollow structures. The first connecting portion 2071 may be disposed on one of the body 201 and the panel assembly 202, and the second connecting portion 2072 may be disposed on the other of the body 201 and the panel assembly 202. The first connecting portion 2071 and the second connecting portion 2072 are connected to form a part of the main air intake channel. Further, the first connecting portion 2071 may be integrally formed with the bottom wall 2011 of the body 201, and the second connecting portion 2072 may be fastened to the panel assembly 202 with a snap-fit ​​and screws. In other optional embodiments, the first connecting portion 2071 may be fastened to the bottom wall 2011 of the body 201 with a snap-fit ​​and / or screws, and the second connecting portion 2072 may be integrally formed with the panel 2021. This embodiment does not limit the method of fixing the first connecting part 2071 and the second connecting part 2072 to the bottom wall 2011 of the body 201 and the panel assembly 202.

[0065] Air inlet 203 allows airflow to enter the body 201. Air inlet 203 includes a main air inlet 203 and a secondary air inlet 2033. The main air inlet 203 is connected to the first space 301, and the secondary air inlet 2033 is connected to the second space 302. The main air inlet 203 and the secondary air inlet 2033 are isolated from each other.

[0066] The main air inlet 203 includes a first main air inlet 2031 and a second main air inlet 2032. The first main air inlet 2031 is disposed on the panel assembly 202. The second main air inlet 2032 is disposed on the body 201 and communicates with the first main air inlet 2031. Further, the first main air inlet 2031 is opened facing the second space 302 so that the airflow in the second space 302 passes through the second main air inlet 2032 and then enters the body 201. The first main air inlet 2031 and the second main air inlet 2032 can be arranged opposite to each other. In other optional embodiments, the first main air inlet 2031 and the second main air inlet 2032 can be offset, specifically partially offset or completely offset. For the offset first main air inlet 2031 and the second main air inlet 2032, they can still be connected by the above-mentioned connecting part 207, and the air passage is maintained by the connecting part 207.

[0067] Through the design described in this embodiment, only the first main air inlet 2031 is exposed outside the panel 2021 in the ventilation device 200, while the secondary air inlet 2033 is hidden above the panel assembly 202, thus maintaining the aesthetics of the ventilation device 200. Furthermore, the secondary air inlet 2033 is configured to guide airflow from the first space 301 into the ventilation device 200, thereby increasing the airflow volume of the ventilation device 200. Moreover, since the main air inlet 203 and the secondary air inlet 2033 each have independent airflow channels, interference between the airflow from the main air inlet 203 and the airflow from the secondary air inlet 2033 can be prevented, reducing turbulence and noise.

[0068] The opening areas of the second main air inlet 2032 and the auxiliary air inlet 2033 can be set according to the ratio between the first space 301 and the second space 302. In this embodiment, in order to optimize the ventilation performance and circulation performance of the ventilation device 200, the following area ratio can be set. For example... Figure 11 As shown, the total area of ​​the second main air inlet 2032 is defined as S1. The total area of ​​the secondary air inlet 2033 is defined as S2. The area relationship between the second main air inlet 2032 and the secondary air inlet 2033 satisfies the formula: S2 = K × S1. K is the proportionality coefficient of S1 and S2, 0.2 ≤ K ≤ 0.35. Multiple secondary air inlets 2033 can be provided; in this embodiment, two are provided, respectively located on both sides of the second main air inlet 2032. The areas of a single secondary air inlet 2033 are S2-1 and S2-2, respectively, where S2 = S2-1 + S2-2. It should be understood that the embodiments of this utility model are not limited to this.

[0069] For example, three, four, five, six, or any other number of secondary air inlets 2033 can be provided. Some of the aforementioned secondary air inlets 2033 are located on one side of the second main air inlet 2032, while another part is located on the other side of the second main air inlet 2032. The secondary air inlets 2033 located on the same side can be continuous or isolated.

[0070] For example, the area relationship between the second main air inlet 2032 and the secondary air inlet 2033, in addition to satisfying the above formula, can also be configured to K as less than 0.2, or as other ratios greater than 0.35, specifically to satisfy the proportional relationship between the first space 301 and the second space 302.

[0071] A secondary air inlet 2033 is located on the outside of the connecting portion 207 (i.e., the aforementioned first connecting portion 2071 and / or second connecting portion 2072). Further, the secondary air inlet 2033 faces the first space 301 to allow airflow from the first space 301 into the body 201. The secondary air inlet 2033 extends from the center of the second main air inlet 2032 outwards and slopes from the panel assembly 202 side towards the body 201 side. For example, the second main air inlet 2032 is located between the two secondary air inlets 2033. The sides of the two secondary air inlets 2033 closest to the second main air inlet 2032 are approximately flush with the plane formed by the second main air inlet 2032, while the sides of the two secondary air inlets 2033 furthest from the second main air inlet 2032 are recessed into the plane formed by the second main air inlet 2032. Among them, the two secondary air inlets 2033 can be symmetrically arranged on both sides of the second main air inlet 2032, specifically on both sides of the width of the second main air inlet 2032.

[0072] Specifically, since the connecting part 207 extends from the bottom wall 2011 of the body 201 towards the panel assembly 202 to form a hollow structure, the second main air inlet 2032 is located inside the hollow structure of the connecting part 207, and the auxiliary air inlet 2033 is located on the outside of the panel. When the connecting part 207 is connected to the panel assembly 202, the second main air inlet 2032 and the auxiliary air inlet 2033 are located in two separate areas.

[0073] Using the plane where the extension direction of the panel assembly 202 lies as the projection plane and the axial direction of the motor 206 as the projection direction, the projections of the secondary air inlet 2033 and the second main air inlet 2032 both coincide with the projection of the fan blade 205. That is, both the secondary air inlet 2033 and the second main air inlet 2032 are located within the orthographic projection range of the fan blade 205. In this embodiment, since the orthographic projection of the fan blade 205 is circular, the secondary air inlet 2033 and the second main air inlet 2032 are located within its circular range. Specifically, to increase the air intake, the edges of the secondary air inlet 2033 and the second main air inlet 2032 are tangent to the circular edge.

[0074] The main air intake duct 209, located downstream of the main air intake 203, is configured to guide the airflow entering through the main air intake 203. This can be understood as the airflow entering the body 201 from the main air intake 203. Specifically, the airflow in the second space 302 passes through the hollow structure of the connecting portion 207 from the first main air intake 2031, through the second main air intake 2032, and enters the body 201. The downstream side can be understood as the portion through which the airflow enters the body 201 from the second space 302.

[0075] The secondary air intake duct 210, located downstream of the secondary air intake 2033, is configured to guide the airflow entering through the secondary air intake 2033. This can be understood as the airflow flowing from the secondary air intake 2033 into the body 201. Specifically, the airflow in the first space 301 enters the body 201 through the secondary air intake 2033. The downstream side can be understood as the portion through which the airflow passes after entering the body 201 from the first space 301.

[0076] The main air intake duct 209 and the auxiliary air intake duct 210 are isolated from each other, meaning they do not intersect. Of course, the airflows entering the body 201 through the main air intake duct 209 and the auxiliary air intake duct 210 respectively will converge inside the body 201.

[0077] The body 201 also includes a rib 208. The rib 208 is located at the secondary air inlet 2033 and protrudes from the plane of the secondary air inlet 2033 toward the panel assembly 202. The rib 208 may be configured as a sheet-like structure, among other things.

[0078] In other embodiments, multiple ribs 208 may be provided with the same height, and the multiple ribs 208 are spaced apart, forming a flow channel between two adjacent ribs 208 to accommodate airflow. Furthermore, a height difference is formed between the ribs 208 and the horizontal plane of the secondary air inlet 2033. When foreign objects or paper are close, air can pass through the gap formed by the height difference and enter the machine body 201 through the secondary air inlet. The height of the rib 208 can be understood as the vertical distance from the plane of the secondary air inlet 2033 to the top of the rib 208.

[0079] In this embodiment, as Figure 7 and Figure 10As shown, the rib 208 includes a first rib 2081 and a second rib 2082 spaced apart from the first rib 2081. The term "spaced apart" refers to the distance between the positions of the first rib 2081 and the second rib 2082. Furthermore, when there are multiple first ribs 2081 and second ribs 2082, they are arranged in a cyclical pattern, i.e., alternating between "first rib 2081, second rib 2082, first rib 2081, second rib 2082... first rib 2081, second rib 2082, first rib 2081, second rib 2082".

[0080] The first rib 2081 and the second rib 2082 form a height difference. Furthermore, at least a portion of the height of the first rib 2081 is higher than the height of the second rib 2082.

[0081] Specifically, the height difference is the difference between the vertical height H1 of the horizontal plane where the secondary air inlet 2033 is located from the farthest point A of the first rib 2081 and the vertical height H2 of the horizontal plane where the secondary air inlet 2033 is located from the second rib 2082. H2 and H1 partially coincide vertically. H1 and H2 satisfy the relationship: |H1-H2|>S×H1. S=0.1.

[0082] Alternatively, we can define A as the farthest point perpendicular to the first rib 2081 on the plane containing the secondary air inlet 2033, and B as the farthest point perpendicular to the second rib 2082 on the plane containing the secondary air inlet 2033. The extension of the line connecting A and B is y2. Let the horizontal line be x, and the slope of the plane containing the secondary air inlet 2033 be y1, with a slope of a. y1 intersects H1 perpendicularly. x and y1 satisfy the relationship y1=ax, where a is a constant.

[0083] In the formula, y1 is the slope of the plane containing the secondary air inlet 2033, and its slope is a constant. This means that the secondary air inlet 2033 is sloped, which is beneficial for airflow to enter the interior of the body 201. Where -20≤a<0, 0<a≤20.

[0084] like Figure 13 As shown, y2 can be parallel to the plane where the secondary air inlet 2033 is located. Furthermore, x and y2 satisfy the relationship y2=ax+b, where b is a constant.

[0085] Similar to the above embodiments, the shape of y2 can be adjusted as needed through the design shown above to optimize the airflow entry method and improve air intake efficiency. Wherein, -20≤a<0, 0<a≤20; -50≤b<0, 0<b≤50.

[0086] like Figure 12As shown, the extension line y2 extending towards the first rib 2081 can intersect the extension surface of the plane it lies on. Furthermore, x and y2 satisfy the relationship y2=(ac)x+b, where b and c are constants. Wherein, -20≤a<0, 0<a≤20; -50≤b<0, 0<b≤50; -20≤c<0, 0<c≤20, and a≠c.

[0087] The first rib 2081 and the second rib 2082 have a length difference. Multiple first ribs 2081 are provided, and all of them have the same length. Multiple second ribs 2082 are provided, and the length of each second rib 2082 gradually decreases from the middle of the secondary air inlet 2033 towards both sides. The length L1 of the second rib 2082 is greater than the length L2 of the first rib 2081. The length of the rib 208 can be understood as the horizontal distance from the starting point to the ending point of the rib 208 along the plane of the secondary air inlet 2033.

[0088] In this embodiment, the panel assembly 202 further includes air guide plates, which are respectively disposed at the first main air inlet 2031 and the air outlet 204, and are rotatably connected to the panel 2021. By rotating the air guide plates, the first main air inlet 2031 and the air outlet 204 can be opened or closed. In other optional embodiments, the first main air inlet 2031 and the air outlet 204 can both be configured as grilles, or grilles and air guide plates can be combined.

[0089] The following describes the implementation of the embodiments of this utility model.

[0090] When the ventilation device 200 is activated, the air guide plate rotates to open the first main air inlet 2031 and the air outlet 204. Opening the first main air inlet 2031 and / or the air outlet 204 can be understood as opening the first main air inlet 2031 and / or the air outlet 204 to connect them to the external space. Specifically, this can be achieved by the swinging of the air guide plate disposed on the first main air inlet 2031 and / or the air outlet 204. The air guide plate can be connected to the output end of an actuator (e.g., a motor), and the swinging angle of the air guide plate opens or closes the first main air inlet 2031 and / or the air outlet 204. In the open state, the first main air inlet 2031 and / or the air outlet 204 are at least partially exposed to the external space; in the closed state, the first main air inlet 2031 and / or the air outlet 204 are blocked by the air guide plate. Furthermore, the motor drives the fan blades 205 to rotate, and the airflow in the second space 302 enters from the first main air inlet 2031, while the airflow in the first space 301 enters from the secondary air inlet 2033.

[0091] Since the connecting part 207 connects the first main air inlet 2031 and the second main air inlet 2032, and the connecting part 207 extends from the bottom wall 2011 of the body 201 towards the panel assembly 202 to form a hollow structure, the second main air inlet 2032 is located inside the hollow structure of the connecting part 207, and the auxiliary air inlet 2033 is located outside the enclosure. When the connecting part 207 is connected to the panel assembly 202, the second main air inlet 2032 and the auxiliary air inlet 2033 are in two separate areas. This makes the first main air inlet duct 209 and the auxiliary air inlet duct 210 two non-intersecting air ducts. That is to say, the airflow in the second space 302 enters from the first main air inlet 2031 and can pass through the connecting part 207 to enter the second main air inlet 2032, without intersecting with the airflow in the first space 301 outside the body 201. By setting the main air inlet 203 and the secondary air inlet 2033 in two different spaces, the turbulence phenomenon in the air inlet 203 caused by the air pressure is reduced, which can not only reduce noise, but also increase the air volume.

[0092] Furthermore, since the edges of the secondary air inlet 2033 and the second main air inlet 2032 are tangent to the circular edge of the orthographic projection of the fan blade 205, the air intake volume can be increased. Also, because the secondary air inlet 2033 is inclined from the center of the second main air inlet 2032 outwards towards the periphery, and from the panel assembly 202 side towards the body 201 side, more airflow can enter the center of the fan blade 205 more smoothly, and then, after the fan blade 205 rotates, is blown outwards towards the outer periphery of the fan blade 205. The airflow flowing outwards from the outer periphery of the fan blade 205 is blown out through the air outlet 204 to the outside of the ventilation device 200.

[0093] In addition, since the secondary air inlet 2033 is provided with a first rib 2081 and a second rib 2082, and the first rib 2081 and the second rib 2082 are of different heights and lengths, it is difficult to completely block the secondary air inlet 2033 when a large foreign object (e.g., paper) is close to it. The airflow can pass through the gap formed by the height difference and length difference between the first rib 2081 and the second rib 2082 and enter the body 201, thus ensuring the air intake volume at the position of the secondary air inlet 2033.

[0094] Furthermore, since the second space 302 is the space between the ceiling 300 and the ground, when the ventilation device 200 is activated, the humid air in the second space 302 can be discharged. Also, the humid air entering from the first main air inlet 2031 is separated from the second main air inlet 2032 and the auxiliary air inlet 2033 by the connecting part 207, so the humid air in the first space 301 will not flow into the second space 302.

[0095] Furthermore, since the first space 301 is the space between the building's roof and ceiling 300, and the air circulation within the ceiling 300 is poor, mold is prone to grow. By setting up a secondary air inlet 2033, air circulation within the ceiling 300 can be improved, thereby solving the mold problem within the ceiling 300.

[0096] The embodiments of this utility model have now been described in detail with reference to the accompanying drawings. Based on the above description, those skilled in the art should have a clear understanding of this utility model.

[0097] It should be noted that implementations not shown or described in the accompanying drawings or the main text of the specification are all forms known to those skilled in the art and are not described in detail. Furthermore, the definitions of the components described above are not limited to the specific structures and shapes mentioned in the embodiments, and those skilled in the art can easily modify or substitute them.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A ventilation device, characterized in that, include: Organism; The panel assembly is connected to the body; An air inlet is provided for airflow to enter the machine body. The air inlet includes a main air inlet and a secondary air inlet. The main air intake duct is located downstream of the main air intake and is configured to guide the airflow entering through the main air intake. A secondary air intake duct is located downstream of the secondary air intake and is configured to guide the airflow entering through the secondary air intake. The main air intake duct and the auxiliary air intake duct are isolated from each other.

2. The ventilation device according to claim 1, characterized in that, The main air inlet includes: The first main air inlet is located on the panel assembly; The second main air inlet is located on the body and is connected to the first main air inlet.

3. The ventilation device according to claim 2, characterized in that, The ventilation device includes: The connecting part connects the first main air inlet and the second main air inlet; The secondary air inlet is located on the outside of the connecting part.

4. The ventilation device according to claim 3, characterized in that, The connecting portion extends from the bottom wall of the body toward the panel assembly and forms a surrounding surface with a hollow structure.

5. The ventilation device according to claim 2, characterized in that, The total area of ​​the second main air inlet is S1; The total area of ​​the secondary air inlet is S2; The area relationship between the second main air inlet and the secondary air inlet satisfies the formula: S2=K×S1; K is the ratio coefficient of S1 to S2, where 0.2 ≤ K ≤ 0.

35.

6. The ventilation device according to claim 5, characterized in that, The number of secondary air inlets is at least two, and at least two secondary air inlets are located on both sides of the second main air inlet; Wherein, the area of ​​at least one of the two secondary air inlets is S 2-1 The area of ​​the other is S 2-2 The total area of ​​the secondary air inlets is the sum of the areas of at least two secondary air inlets.

7. The ventilation device according to any one of claims 2 to 6, characterized in that, The ventilation device also includes fan blades and a motor that drives the fan blades to rotate; With the plane where the extension direction of the panel assembly is located as the projection plane and the axial direction of the motor as the projection direction, the projection of the secondary air inlet and the projection of the second main air inlet both coincide with the projection of the fan blade.

8. The ventilation device according to claim 2, characterized in that, The secondary air inlet extends from the center of the second main air inlet outwards and is inclined from one side of the panel assembly toward the other side of the body.

9. The ventilation device according to claim 1, characterized in that, The body also includes: A raised rib is provided at the secondary air inlet and protrudes from the plane of the secondary air inlet toward the panel assembly.

10. The ventilation device according to claim 9, characterized in that, The rib includes a first rib and a second rib spaced apart from the first rib.

11. The ventilation device according to claim 10, characterized in that, The first rib and the second rib form a height difference.

12. The ventilation device according to claim 11, characterized in that: At least a portion of the height of the first rib is higher than the height of the second rib.

13. The ventilation device according to claim 12, characterized in that, The height difference is the difference between the vertical height H1 of the plane where the secondary air inlet is located from the farthest point A of the first rib and the vertical height H2 of the plane where the secondary air inlet is located from the second rib. The vertical lines of H2 and H1 partially overlap; H1 and H2 satisfy the relationship: |H1-H2|>S×H1; The value of S is 0.

1.

14. The ventilation device according to claim 12, characterized in that, The farthest point of the plane where the secondary air inlet is located, which is perpendicular to the first rib, is A; B is the farthest point of the plane where the secondary air inlet is located, which is perpendicular to the second rib. The extension of the line connecting A and B is y2; The plane containing y2 is parallel to the plane containing the secondary air inlet.

15. The ventilation device according to claim 14, characterized in that, Let the horizontal line be x, the plane containing the secondary air inlet and the oblique line be y1, the slope of y1 be a, the vertical height between the plane containing the secondary air inlet and the first convex rib be H1, the y1 intersects the H1 perpendicularly, and the relationship between x and y1 is y1=ax, where a is a constant; The x and y2 satisfy the relationship y2=ax+b, where b is a constant.

16. The ventilation device according to claim 12, characterized in that, The farthest point of the plane where the secondary air inlet is located, which is perpendicular to the first rib, is A; B is the farthest point of the plane where the secondary air inlet is located, which is perpendicular to the second rib. The extension of the line connecting A and B is y2; The extension line y2 extending toward the first rib intersects the extension surface of the plane it is on.

17. The ventilation device according to claim 16, characterized in that, Let the horizontal line of the horizontal plane be x, the oblique line of the plane where the secondary air inlet is located be y1, the slope of y1 be a, the vertical height between the plane where the secondary air inlet is located and the first convex rib be H1, the y1 intersects the H1 perpendicularly, the x and the y1 satisfy the relationship y1=ax, and the a is a constant; The slope of y2 is ac, and x and y2 satisfy the relationship y2=(ac)x+b, where b and c are constants.

18. The ventilation device according to any one of claims 10 to 17, characterized in that, The first rib and the second rib have a length difference.

19. The ventilation device according to claim 18, characterized in that, The first rib has multiple ribs, and they are all the same length; The second rib is provided in multiple parts, and the length of each second rib gradually decreases from the middle of the secondary air inlet to both sides; The length L1 of the second rib is greater than the length L2 of the first rib.

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