Ventilation distribution box
By adopting a Venturi-style ventilation channel in the household ventilable distribution box, the problem of poor air circulation inside the distribution box is solved, effective drying, anti-mold and anti-corrosion is achieved, and service life is extended.
Patent Information
- Application Number
- CN202421594678.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-05
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-05
AI Technical Summary
The household metal shell ventilated distribution box is a non-sealed structure due to cost, construction, safety and other reasons, which makes it difficult for air to flow, and is prone to corrosion and mold in high humidity environments.
A ventilable distribution box is designed, using a Venturi-type structure ventilation channel. The ventilation channel consists of a shrinking pipe, a throat pipe and an expanded pipe. The air inlet area is smaller than the air outlet area, and the Venturi effect is used to achieve air inhalation and discharge.
It effectively improves ventilation inside the distribution box, prevents moisture accumulation, avoids mold and corrosion, and improves the service life of the distribution box.
Smart Images
Figure CN222927984U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of distribution devices, and more specifically, to a ventilable distribution box. Background Art
[0002] At present, due to reasons such as cost, construction, and safety, the household metal shell ventilable distribution box is often of a non-sealed structure. The installation mode of the household ventilable distribution box is that the box body is embedded in the wall, the box cover is connected to the box body by bolts and covers the periphery of the box body. There will be a certain gap between the box body and the box cover. For aesthetic needs, the outer periphery of the box cover is closely attached to the wall, and it is difficult for air to circulate inside the box body. In the case of high air humidity, corrosion, mildew and other phenomena are likely to occur due to the accumulation of water vapor.
[0003] In view of this, this application is hereby proposed. Content of the Utility Model
[0004] The purpose of the utility model is to provide a ventilable distribution box, which can ensure the internal dryness and improve the service life of the product only when the ventilable distribution box is not opened for a long time.
[0005] The embodiments of the utility model are implemented as follows:
[0006] The utility model provides a ventilable distribution box, which includes a box body and a box cover covering the box body. A ventilation box is arranged outside the box cover, and a ventilation channel is arranged inside the ventilation box. The opposite ends of the ventilation channel are respectively an air inlet and an air outlet communicating with the outside;
[0007] The ventilation channel has a Venturi structure located between the air inlet and the air outlet. The Venturi structure includes a reduced-diameter pipe, a throat pipe, and an enlarged-diameter pipe that are sequentially connected. In the length direction of the ventilation channel from the air inlet to the air outlet, the cross-sectional area of the reduced-diameter pipe gradually decreases, and the cross-sectional area of the enlarged-diameter pipe gradually increases;
[0008] On the box cover, a ventilation hole communicating with the inside of the box body is arranged at a position corresponding to the throat pipe;
[0009] The area of the air inlet is smaller than the area of the air outlet.
[0010] In an optional embodiment, a section of the ventilation channel close to the air outlet is an air outlet channel. In the length direction of the ventilation channel from the air inlet to the air outlet, the cross-sectional area of the air outlet channel is the same.
[0011] In an optional embodiment, the cross-section of the ventilation channel perpendicular to its length direction is rectangular.
[0012] In an optional embodiment, the aspect ratio of the rectangle is 5-6:1.
[0013] In an alternative embodiment, in the longitudinal direction of the ventilation passage, the length of the throat is 1 to 1.5 times its height.
[0014] In an alternative embodiment, the angle between the upper top wall and / or the lower top wall of the reduced-diameter pipe and the center line of the ventilation passage is 16 to 20°.
[0015] In an alternative embodiment, the angle between the upper top wall and / or the lower top wall of the enlarged-diameter pipe and the center line of the ventilation passage is 25 to 30°.
[0016] In an alternative embodiment, the ratio of the cross-sectional area at the throat to the cross-sectional area at the air outlet is 5 to 10%.
[0017] In an alternative embodiment, the ratio of the cross-sectional area at the air inlet to the cross-sectional area at the air outlet is 60 to 80%.
[0018] In an alternative embodiment, the box cover includes a cover frame and a transparent plate. The cover frame has a hollowed-out middle part. The ventilation box is arranged above the hollowed-out middle part. The upper edge of the transparent plate is hinged to the cover frame, and the transparent plate is arranged in the hollowed-out middle part.
[0019] The beneficial effects of the embodiments of the present utility model are as follows:
[0020] The ventilable distribution box provided in the present application has a ventilation box due to which the ventilation passage inside the ventilation box adopts a Venturi structure. The area of the air inlet is smaller than that of the air outlet. The cross-sectional area of the ventilation passage gradually decreases from the air inlet to the throat and reaches the minimum at the throat section, and then gradually increases to the air outlet section. The ventilation holes at the throat generate negative pressure during the air flow due to the Venturi effect because the air inlet is smaller than the air outlet. Since there is a gap between the household embedded ventilable distribution box body and the ventilable distribution box cover, the resistance is small, and the air inside the ventilable distribution box can be inhaled and discharged through the air outlet. In this way, the ventilation inside the distribution box can be realized, effectively improving the phenomena such as mildew and corrosion inside the ventilable distribution box caused by the accumulation of moisture. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.
[0022] Figure 1 It is a schematic structural diagram of the ventilable distribution box provided by the embodiments of the present utility model from the first perspective;
[0023] Figure 2Schematic diagram of the ventilable distribution box provided by the embodiment of the present utility model from the second perspective;
[0024] Figure 3 It is Figure 2 The sectional view of the A-A section in
[0025] Figure 4 It is Figure 2 The sectional view of the C-C section in
[0026] Icon: 100 - Ventilable distribution box; 110 - Box body; 120 - Box cover; 121 - Cover frame; 122 - Transparent plate; 130 - Ventilation box; 140 - Ventilation channel; 141 - Air inlet; 142 - Air outlet; 143 - Reducing pipe; 144 - Throat pipe; 145 - Enlarging pipe; 146 - Air outlet channel; 151 - Vent hole. Detailed implementation manners
[0027] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.
[0028] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents the selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0029] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0030] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed when in use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.
[0031] In addition, terms such as "horizontal" and "vertical" do not require the components to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.
[0032] In the description of the present utility model, it should also be noted that, unless otherwise clearly specified and limited, the terms "arranged", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0033] As Figures 1 to 4 As shown in the figure, an embodiment of the present utility model provides a ventilable distribution box 100, which includes a box body 110 and a box cover 120 covering the box body 110. A ventilation box 130 is arranged outside the box cover 120, and a ventilation channel 140 is arranged inside the ventilation box 130. The opposite ends of the ventilation channel 140 are respectively an air inlet 141 and an air outlet 142 communicating with the outside;
[0034] The ventilation channel 140 has a Venturi structure located between the air inlet 141 and the air outlet 142. The Venturi structure includes a reduced-diameter pipe 143, a throat pipe 144, and an enlarged-diameter pipe 145 that are sequentially connected. In the length direction of the ventilation channel 140 from the air inlet 141 to the air outlet 142, the cross-sectional area of the reduced-diameter pipe 143 gradually decreases, and the cross-sectional area of the enlarged-diameter pipe 145 gradually increases;
[0035] On the box cover 120, an air vent 151 communicating with the inside of the box body 110 is arranged at a position corresponding to the throat pipe 144;
[0036] The area of the air inlet 141 is smaller than the area of the air outlet 142.
[0037] It should be noted that the cross-sectional areas mentioned in the content of the present utility model all refer to the areas on the cross-sections perpendicular to the ventilation channel 140.
[0038] This application adopts a Venturi structure, and a ventilation channel 140 is provided on the box cover 120, where the area of the air inlet 141 is smaller than the area of the air outlet 142. The cross-sectional area of the ventilation channel 140 gradually decreases from the air inlet 141 to the throat 144 until it reaches the smallest cross-section at the throat 144, and then gradually increases to the air outlet 142. There are vent holes 151 at the throat 144. During the air flow, due to the air inlet 141 being smaller than the air outlet 142, using the Venturi effect, a negative pressure is generated at the small holes at the throat 144. Because there is a gap between the body of the household embedded ventilable distribution box 100 and the cover of the ventilable distribution box 100, the resistance is small, and the air inside the ventilable distribution box 100 can be inhaled and discharged through the air outlet. In this way, the ventilation inside the electrical box can be achieved, effectively improving phenomena such as mildew and corrosion inside the ventilable distribution box 100 caused by moisture accumulation.
[0039] Therefore, the ventilable distribution box provided by the present utility model can effectively improve phenomena such as mildew and corrosion inside the ventilable distribution box 100 caused by moisture accumulation; and there is no need to add electrical equipment such as fans, and only by using air convection, the inside of the distribution box can be dried, moisture-proof and mildew-proof, and the service life of the distribution box can be improved.
[0040] It should be noted that the "diameter-expanded pipe 145", "throat 144" and "diameter-reduced pipe 143" mentioned in this application do not necessarily mean that they must be cylindrical tubular structures, and their cross-sections can be circular, square or triangular, etc. Here, "diameter expansion" and "diameter reduction" mainly refer to the gradual increase and gradual decrease of the cross-sectional area.
[0041] Optionally, since in a household environment, the flow direction of the wind is generally parallel, therefore, the length direction of the ventilation channel 140 is parallel to the length direction of the ventilable distribution box 100, that is, after the ventilable distribution box 100 is installed, the ventilation channel 140 is horizontally arranged.
[0042] Optionally, a section of the ventilation channel 140 close to the air outlet 142 is the air outlet channel 146, and in the length direction of the ventilation channel 140 from the air inlet 141 to the air outlet 142, the cross-sectional area of the air outlet channel 146 is the same.
[0043] Optionally, the cross-section of the ventilation channel 140 perpendicular to its length direction is rectangular.
[0044] Furthermore, to enable the ventilable distribution box 100 to have a better ventilation effect, the aspect ratio of the rectangle is 5-6:1.
[0045] Optionally, to enable the ventilable distribution box 100 to have a better ventilation effect, in the length direction of the ventilation channel 140, the length L of the throat 144 is 1-1.5 times its height H (such as 1 time, 1.2 times or 1.5 times).
[0046] Optionally, to enable the ventilable distribution box 100 to have a better ventilation effect, the angle a between the upper top wall and / or the lower top wall of the reduced-diameter pipe 143 and the center line of the ventilation channel 140 is 16 to 20° (such as 16°, 17°, 19° or 20°).
[0047] Optionally, to enable the ventilable distribution box 100 to have a better ventilation effect, the angle b between the upper top wall and / or the lower top wall of the enlarged-diameter pipe 145 and the center line of the ventilation channel 140 is 25 to 30° (such as 25°, 28° or 30°).
[0048] Optionally, to enable the ventilable distribution box 100 to have a better ventilation effect, the ratio of the cross-sectional area at the throat pipe 144 to the cross-sectional area at the air outlet 142 is 5 to 10% (such as 5%, 8% or 10%).
[0049] Optionally, to enable the ventilable distribution box 100 to have a better ventilation effect, the ratio of the cross-sectional area at the air inlet 141 to the cross-sectional area at the air outlet 142 is 60 to 80% (such as 60%, 70% or 80%).
[0050] Optionally, the box cover 120 includes a cover frame 121 and a transparent plate 122. The cover frame 121 has a hollowed-out middle part. The ventilation box 130 is arranged above the hollowed-out middle part. The upper edge of the transparent plate 122 is hinged to the cover frame 121, and the transparent plate 122 is arranged at the hollowed-out middle part.
[0051] The arrangement of the transparent plate 122 facilitates people to directly observe the internal structure of the ventilable distribution box 100 from the outside through the transparent plate 122.
[0052] In summary, for the ventilable distribution box 100 provided in the embodiment of the present utility model, since it has a ventilation box 130, and the ventilation box 130 has a ventilation channel 140 adopting a Venturi structure, where the area of the air inlet 141 is smaller than the area of the air outlet 142, the cross-sectional area of the ventilation channel 140 gradually decreases from the air inlet 141 to the throat pipe 144 and reaches the minimum at the cross-section of the throat pipe 144, and then gradually increases to the cross-section of the air outlet 142. The ventilation holes 151 at the throat pipe 144 generate negative pressure due to the Venturi effect during the air flow process because the air inlet 141 is smaller than the air outlet 142. Due to the gap between the body of the household embedded ventilable distribution box 100 and the cover of the ventilable distribution box 100, with small resistance, the air inside the ventilable distribution box 100 can be inhaled and discharged through the air outlet, so that the ventilation inside the distribution box can be realized, effectively improving the phenomena such as mildew and corrosion inside the ventilable distribution box 100 caused by the accumulation of moisture.
[0053] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A ventilated distribution box, characterized in that: It comprises a box body and a box cover arranged on the box body, a ventilation box is arranged outside the box cover, a ventilation channel is arranged inside the ventilation box, and opposite ends of the ventilation channel are respectively an air inlet and an air outlet connected to the outside; The ventilation passage has a Venturi structure located between the air inlet and the air outlet, the Venturi structure includes a reducing pipe, a throat pipe and an expanding pipe connected in sequence, and in the length direction of the ventilation passage from the air inlet to the air outlet, the cross-sectional area of the reducing pipe gradually decreases, and the cross-sectional area of the expanding pipe gradually increases; The box cover is provided with a vent hole communicating with the interior of the box body at a position corresponding to the throat; The area of the air inlet is smaller than the area of the air outlet.
2. The ventilated distribution box according to claim 1, characterized in that: A section of the ventilation channel close to the air outlet is the air outlet channel, and the cross-sectional area of the air outlet channel is the same in the length direction of the ventilation channel from the air inlet to the air outlet.
3. The ventilated distribution box according to claim 1, characterized in that: The cross section of the ventilation channel perpendicular to the length direction thereof is rectangular.
4. The ventilated distribution box according to claim 3, characterized in that: The aspect ratio of the rectangle is 5-6:
1.
5. The ventilated distribution box according to claim 3, characterized in that: In the length direction of the ventilation passage, the length of the throat is 1 to 1.5 times the height thereof.
6. The ventilated distribution box according to claim 1, characterized in that: The angle between the upper top wall and / or the lower top wall of the reduced diameter tube and the center line of the ventilation channel is 16 to 20 degrees.
7. The ventilated distribution box according to claim 1, characterized in that: The angle between the upper top wall and / or the lower top wall of the expansion tube and the center line of the ventilation channel is 25-30 degrees.
8. The ventilated distribution box according to claim 1, characterized in that: The ratio of the cross-sectional area at the throat to the cross-sectional area at the air outlet is 5-10%.
9. The ventilated distribution box according to claim 1, characterized in that: The ratio of the cross-sectional area at the air inlet to the cross-sectional area at the air outlet is 60-80%.
10. The ventilated distribution box according to claim 1, characterized in that: The box cover includes a cover frame and a perspective plate, the cover frame has a central hollow portion, the ventilation box is arranged above the central hollow portion, the upper edge of the perspective plate is hinged to the cover frame, and the perspective plate is arranged at the central hollow portion.