Wind cap

Abstract

The utility model belongs to the technical field of exhaust passage systems, and provides a hood which is arranged at an air outlet of an exhaust passage and comprises a base with an air inlet, a rainproof cover plate arranged above the air inlet, a wind shielding device arranged beside the rainproof cover plate and a fixing device connected with the base, the rainproof cover plate and the wind shielding device. An air outlet channel communicated with the air inlet is arranged between the rainproof cover plate and the wind shielding device, and the lower end of the rain shielding plate is hinged to the wind shielding device and / or the fixing device and / or the rainproof cover plate through a hinge piece. The opening angle of the rain baffle is automatically adjusted under the action of natural wind and / or air flow exhausted from the exhaust passage so that air in the air outlet passage can flow out conveniently. According to the air cap structure, the rain baffle is additionally arranged in the air cap structure, the rain baffle is hinged to the wind shielding device or the rainproof cover plate or the fixing device, the opening angle of the rain baffle is automatically adjusted through the effect of natural wind and / or air flow exhausted in the exhaust channel, and efficient exhaust and prevention of natural wind, rain and snow from flowing backwards are achieved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of exhaust duct systems, and more particularly to a wind cap. BACKGROUND

[0002] The wind cap applied to the out-of-roof of the building exhaust duct system blocks natural wind, rain and snow from pouring into the exhaust duct, and is beneficial to the exhaust of exhaust gas in the exhaust duct. However, in the prior art, there is no wind cap structure that can increase the exhaust area while perfectly solving the problem of natural wind, rain and snow pouring into the exhaust duct. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the embodiment of the application is to provide a wind cap, which aims to solve the technical problem that the wind cap in the prior art cannot simultaneously meet the requirements of large exhaust area and no natural wind, rain and snow pouring.

[0004] To achieve the above-mentioned purpose, the technical scheme adopted by the embodiment of the application is to provide a wind cap arranged at the air outlet of an exhaust duct, comprising a base with an air inlet, a rainproof cover plate arranged above the air inlet, a wind blocking device arranged beside the rainproof cover plate, and a fixing device connecting the base, the rainproof cover plate and the wind blocking device, an air outlet channel in communication with the air inlet being arranged between the rainproof cover plate and the wind blocking device, and further comprising a rain baffle, the lower end of the rain baffle being hinged to the wind blocking device and / or the fixing device and / or the rainproof cover plate through a hinge piece, and the rain baffle automatically adjusts its opening angle under the action of natural wind and / or exhaust gas flow in the exhaust duct so as to facilitate the outflow of gas in the air outlet channel.

[0005] Specifically, the rain baffle is a flat plate, a curved plate or an irregularly shaped plate.

[0006] Specifically, the wind blocking device is a flat plate, a plurality of flat plates or a spliced plate formed by splicing a plurality of L-shaped plates or an irregularly shaped plate.

[0007] Specifically, the rain baffle is a plurality of rain baffles.

[0008] Specifically, the wind blocking device is provided with a first through hole in communication with the air outlet channel, and the rain baffle is hinged to the first through hole and automatically adjusts its opening angle under the action of natural wind and / or exhaust gas flow in the exhaust duct to open the first through hole.

[0009] Specifically, the wind blocking device has an inclined slope, and the first through hole is arranged on the inclined slope.

[0010] Specifically, the wind blocking device is provided with a second through hole in communication with the air outlet channel and the outside, and a normally closed check plate is hinged to the second through hole.

[0011] Specifically, the side of the rain baffle facing away from the air outlet channel is further provided with a control member for limiting the opening angle of the rain baffle.

[0012] Specifically, the control member is arranged on the hinge member, or on the wind shielding device, or on the rain cover, or on the fixing device.

[0013] Specifically, the base comprises a hollow seat body and a fixing portion extending outward along the edge of the seat body, and the outer wall of the top portion of the seat body is further provided with a flow guide plate extending upward.

[0014] In the present application, an active rain baffle is added to the existing air cap structure, the rain baffle is hinged to the wind shielding device or the rain cover or the fixing device, and the opening angle of the rain baffle is automatically adjusted by the action of natural wind and / or exhaust airflow in the exhaust duct, so as to achieve efficient exhaust and prevent natural wind, rain and snow from pouring in. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0016] Figure 1 A top view of the air cap provided in Embodiment One of the present application;

[0017] Figure 2 A top view of the air cap provided in Embodiment One of the present application; Figure 1 A longitudinal sectional view of the air cap;

[0018] Figure 3 A top view of the air cap provided in Embodiment One of the present application;

[0019] Figure 4 A top view of the air cap provided in Embodiment One of the present application; Figure 3 A longitudinal sectional view of the air cap;

[0020] Figure 5 A longitudinal sectional view of the air cap provided in Embodiment Three of the present application;

[0021] In the drawings, various reference signs represent:

[0022] 10 - base; 11 - air inlet; 111 - seat body; 112 - fixed part; 113 - deflector; 12 - rain cover; 13 - wind shield; 131 - vertical plate; 132 - upper inclined plate; 133 - lower inclined plate; 134 - first through hole; 135 - second through hole; 136 - normally closed check plate; 14 - fixing device; 141 - first support rod; 142 - second support rod; 143 - third support rod; 15 - air outlet passage; 16 - rain shield; 17 - hinge; 18 - control member; 19 - support member. DETAILED DESCRIPTION

[0023] In order to make the technical problems to be solved, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.

[0024] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0025] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0026] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, and the meaning of "several" is one or more, unless otherwise explicitly specified.

[0027] Embodiment One

[0028] Reference Figure 1 , Figure 2The wind cap provided by the embodiment one of the application is arranged at the air outlet of the exhaust channel (not shown in the figure), and is used for smoothly discharging the gas in the exhaust channel from the air outlet, while avoiding the backflow of external gas or rain and snow into the exhaust channel. The wind cap comprises a base 10 with an air inlet 11, a rainproof cover plate 12 arranged above the air inlet 11, a wind blocking device 13 arranged at the side of the rainproof cover plate 12, and a fixing device 14 connecting the base 10, the rainproof cover plate 12 and the wind blocking device 13. The rainproof cover plate 12 and the wind blocking device 13 are provided with an air outlet channel 15 in communication with the air inlet 11. In the embodiment, the wind cap further comprises a rain baffle 16, the lower end of the rain baffle 16 is hinged to the wind blocking device 13 through a hinge 17, and the rain baffle 16 automatically adjusts the opening angle a thereof under the action of natural wind and / or exhaust airflow in the exhaust channel, so as to facilitate the gas flow out of the air outlet channel 15, and effectively prevent the backflow of natural wind, rain and snow.

[0029] Figure 2 Fig. 4 is a longitudinal sectional view of the wind cap in a normal state, and the solid line is the state of the rain baffle 16 in the normal state, and the dashed line is a schematic view of the rain baffle 16 in the open state. Of course, in the actual working state, under the action of different wind forces of the roof natural wind and the exhaust airflow, the opening angles of the rain baffles 16 of the wind cap are different.

[0030] In the embodiment, the rainproof cover plate 12 is a flat plate, which is arranged directly above the air inlet 11 of the base 10 and is fixed by the fixing device 14. Specifically, the fixing device 14 comprises a first branch rod 141 bent, the middle part of the first branch rod 141 is vertical, and the two ends are inclined, the bottom end of the first branch rod 141 is fixed to the base 10, and the top end of the first branch rod 141 is fixedly connected with the rainproof cover plate 12. Of course, the rainproof cover plate 12 can also have other shapes, for example, a flow guide cone can be arranged on or below the rainproof cover plate 12.

[0031] The wind blocking device 13 is arranged around the base 10 and the rainproof cover plate 12, and the fixing device 14 further comprises a second branch rod 142 and a third branch rod 143, wherein the second branch rod 142 is connected between the top of the wind blocking device 13 and the rainproof cover plate 12, and the third branch rod 143 is connected between the wind blocking device 13 and the base 10. In this way, the base 10, the rainproof cover plate 12 and the wind blocking device 13 are fixedly connected by the fixing device 14.

[0032] In this embodiment, the wind shield 13 is made of multiple flat plates. Specifically, the wind shield 13 is made of a vertical plate 131 in the middle, and an upper inclined plate 132 and a lower inclined plate 133 on the top and bottom of the vertical plate 131 respectively. The inclined directions of the upper inclined plate 132 and the lower inclined plate 133 are opposite, and the longitudinal section of the assembled wind shield 13 is horizontally trumpet-shaped. Of course, the wind shield 13 can also be replaced by other shapes, for example, the wind shield 13 can be a flat plate, or an irregularly shaped plate, or a plate made of multiple L-shaped plates.

[0033] In this embodiment, the rain shield 16 is a flat plate, which is hinged to the upper inclined plate 132 of the wind shield 13. The upper inclined plate 132 has an inclined slope, and a first through hole 134 is provided on the inclined slope. The first through hole 134 is in communication with the air outlet channel 15, and the rain shield 16 is hinged to the first through hole 134. Specifically, the lower end of the rain shield 16 is hinged to the lower end of the first through hole 134. In this way, under the action of horizontal natural wind or air flow in the exhaust duct from bottom to top, the inclined rain shield 16 will be blown open, and its opening angle a relative to the first through hole 134 will be adjusted. The first through hole 134 is opened, the air outlet area of the air outlet channel 15 in communication with the outside is increased, and the gas in the exhaust duct is easily discharged. Of course, the rain shield 16 can also be a curved plate or an irregularly shaped plate.

[0034] In this embodiment, the rain shield 16 is multiple. The wind shield 13 is arranged circumferentially along the base 10 and the rain cover 12. Specifically, multiple rain shields 16 can be evenly arranged along the wind shield 13, so that different directions of the rain shield 16 can be opened under the action of different natural winds. Moreover, in this embodiment, one rain shield 16 is arranged on the same side of the wind shield 13. Of course, multiple rain shields 16 can also be arranged on the same side to cover multiple first through holes 134.

[0035] Further, in order to control the opening angle of the rain shield 16 and facilitate its return to cover the first through hole 134 in the absence of wind or gas discharge, a control member 18 for limiting the opening angle of the rain shield 16 is further provided on the side of the rain shield 16 away from the air outlet channel 15. Specifically, in this embodiment, the control member 18 is provided on the hinge member 17. Of course, the control member 18 can also be provided on the wind shield 13. Of course, when the rain shield 16 is arranged at different positions, the control member 18 can also be arranged at different positions, such as when the rain shield 16 is hinged to the fixing device 14, the control member 18 is arranged on the fixing device 14, and when the rain shield 16 is arranged on the rain cover 12, the control member 18 is arranged on the rain cover 12. As long as the control member 18 is located on the side of the rain shield 16 away from the air outlet channel 15 to limit the opening angle of the rain shield 16.

[0036] In this embodiment, the base 10 comprises a hollow seat body 111 and a fixing portion 112 extending outward along the edge of the seat body 111, the air inlet 11 is arranged on the base 10, and the fixing portion 112 is provided with a threaded hole (not shown in the figure) for fixing the fixing portion 112 to the supporting surface by a bolt. The outer wall of the top of the seat body 111 is further provided with a guide plate 113 extending upward obliquely. In this way, after the natural wind enters the air cap through the lower end, the airflow is guided upward by the guide plate 113 to be discharged in the same direction as the exhaust airflow in the exhaust passage, preventing the natural wind from flowing backward.

[0037] In this embodiment, the rain shield 16 is hinged to the wind shielding device 13. Of course, the hinge 17 can also be arranged on the rain cover 12 and / or on the fixing device 14. Since the rain cover 12 has the function of shielding rain and snow, a second through hole 135 cannot be arranged thereon. At this time, a mounting member (not shown in the figure) is arranged on the rain cover 12, and the hinge 17 is mounted on the mounting member.

[0038] Embodiment Two

[0039] With reference to Figure 3 , Figure 4 , the wind cap provided in this embodiment two is shown in the state of the opening angle a of the rain shield 16. The difference between embodiment two and embodiment one is that:

[0040] 1. The wind shielding device 13 and the fixing device 14 are different. In this embodiment, the wind shielding device 13 is a flat plate, which is relatively simple to manufacture, and the folded edge of the flat plate corresponds to the fixing device 14, directly connecting the rain cover 12 and the base 10;

[0041] 2. The rain shield 16 is hinged to the top of the wind shielding device 13, and the rain shield 16 is supported by a support 19 to ensure its structural stability;

[0042] 3. The wind shielding device 13 is provided with a second through hole 135 communicating with the exhaust passage, and a normally closed check plate 136 is hinged at the second through hole 135. In this way, the exhaust airflow blows open the normally closed check plate 136, increasing the side exhaust area and being more conducive to exhaust gas discharge.

[0043] In this embodiment, the other structures are the same as those in embodiment one, and will not be described again.

[0044] Embodiment Three

[0045] With reference to Figure 5 , the longitudinal sectional view of the wind cap in the working state is provided in this embodiment three.

[0046] In this embodiment, the wind shielding device 13 is spliced by a vertical plate 131 and an upwardly inclined plate 132, and the height of the upwardly inclined plate 132 is higher than that of the rain cover 12. Two first through holes 134 and two rain shields 16 are arranged on the same side of the upwardly inclined plate 132.

[0047] As shown in the figure, the horizontal single arrow line represents the natural wind direction, and the vertical double arrow line represents the exhaust air outlet. Since the rain shield 16 is arranged on the inclined surface of the windbreak device 13, the opening angle of the rain shield 16 against the natural wind is zero, that is, the rain shield 16 is in a closed state, and the opening angle of the rain shield 16 facing the natural wind is the largest. Of course, the opening angle of the rain shield 16 will change under the action of the natural wind and / or the exhaust air flow in the exhaust air duct. The present embodiment only shows one opening state of the rain shield 16.

[0048] The above merely provides a specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application.

Claims

1. A hood arranged at an air outlet of an exhaust duct, comprising a base having an air inlet, a rain cover arranged above the air inlet, a wind deflector arranged beside the rain cover, and a fixing device connecting the base, the rain cover and the wind deflector, and an air outlet channel being arranged between the rain cover and the wind deflector and being in communication with the air inlet, characterized in that: The rain baffle is hinged to the wind shielding device and / or the fixing device and / or the rainproof cover through a hinge, and automatically adjusts its opening angle under the action of natural wind and / or exhaust airflow in the exhaust duct to facilitate the gas flow out of the gas outlet passage.

2. The hood of claim 1, wherein: The rain baffle is a flat plate or a curved plate.

3. The hood of claim 1, wherein: The wind shielding device is a flat plate or a spliced plate formed by splicing multiple flat plates or L-shaped plates.

4. The hood of claim 1, wherein: There are multiple rain baffles.

5. The hood of claim 1, wherein: The wind shielding device is provided with a first through hole in communication with the gas outlet passage, and the rain baffle is hinged to the first through hole and automatically adjusts its opening angle under the action of natural wind and / or exhaust airflow in the exhaust duct to open the first through hole.

6. The hood of claim 5, wherein: The wind shielding device has an inclined slope, and the first through hole is arranged on the inclined slope.

7. The hood of claim 1, wherein: The wind shielding device is provided with a second through hole in communication with the gas outlet passage and the outside, and a normally closed check plate is hinged to the second through hole.

8. The hood of claim 1, wherein: The side of the rain baffle away from the gas outlet passage is further provided with a control member for limiting the opening angle of the rain baffle.

9. The hood of claim 8, wherein: The control member is arranged on the hinge, or on the wind shielding device, or on the rainproof cover, or on the fixing device.

10. The hood of claim 1, wherein: The base comprises a hollow seat body and a fixing portion extending outward along the edge of the seat body, and the outer wall of the top of the seat body is further provided with an inclined flow guide plate extending upward.

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