Roof fan with water pan

Abstract

The utility model discloses a roof fan with a water pan. An exhaust area is arranged between an air duct and an air cap, a base is arranged outside the air duct, a fan is arranged inside the air duct, the bottom of the air duct is a vertical extending part, and the vertical extending part extends into a building; an indoor water pan is fixed to the bottom of the vertical extending part, and a water outlet is formed in the bottom of the indoor water pan. The device has the beneficial effects that 1, sprinkle rain or condensed water is effectively prevented from dripping into a room, and liquid can be guided at a fixed point through the guide device; installation and use are convenient, a gravity check valve or an electric valve is arranged, and natural wind can be effectively prevented from flowing backwards or small animals, dust, foreign matter and the like can be effectively prevented from entering a room;

Description

Technical Field

[0001] The utility model belongs to the technical field of roof fans, and in particular relates to a roof fan with a water receiving tray which is applied to industrial plants, pig houses and chicken houses. Background Art

[0002] As we all know, roof ventilation equipment has a wide range of applications and a large number of them. Among them, roof fans are widely promoted and applied due to their simple structure and stable functions. Such fans are usually installed on the roofs of civil buildings, industrial and mining factory buildings, and farms to achieve mechanical ventilation, heat removal, odor removal and other functions.

[0003] Existing roof fans are usually exposed to the outside. When it rains, rainwater will enter the building through the exhaust port. However, most of the improvement methods in this field are to waterproof the roof by lowering the waterproof cap. This waterproof method cannot completely solve the technical problem of diverting rainwater into the room.

[0004] Furthermore, in some special occasions, such as exhaust ventilation operations in pig houses, chicken houses and other buildings, when the temperature is cold in winter or when high-temperature operations are used indoors, the outside air temperature is low and the indoor temperature is relatively high. At this time, the exhausted hot air will condense when it encounters cold air and adhere to the bottom of the hood. If used for a long time, dripping will occur, and the water droplets will drip into the room, causing unnecessary trouble or loss.

[0005] In view of the above technical problems, as technicians in this field, the technical problem that needs to be solved is: design a special roof fan with its own water collection tray to centrally collect external rainwater and steam to avoid creating a humid environment indoors. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model proposes a roof fan with a built-in water collecting pan, which prevents external rainwater or steam condensation water from entering the room by arranging a water collecting pan on the roof fan.

[0007] The technical solution adopted by the utility model to solve its technical problems is:

[0008] A roof fan with a built-in water collection pan comprises a wind tube, a wind hood is fixed on the upper part of the wind tube, an exhaust area is arranged between the wind tube and the wind hood, a base is arranged on the outside of the wind tube, a fan is arranged inside the wind tube, the bottom of the wind tube is a vertical extension part, and the vertical extension part extends to the interior of the building; an indoor water collection pan is fixed to the bottom of the vertical extension part, and a drainage outlet is arranged at the bottom of the indoor water collection pan.

[0009] The top of the hood is provided with a hanging part, and the bottom of the hood is provided with a supporting member fixed to the wind tube; the hanging part and the supporting member can be an integrated structure penetrating the hood.

[0010] A wind valve is arranged on the upper or lower part of the fan inside the wind tube or the vertical extension part, and the control of indoor and outdoor ventilation is realized through the wind valve. The wind valve is a gravity check valve or an electric valve.

[0011] The bottom of the air duct is expanded outwards, and the increase of the indoor air guide area can be achieved through this outward expansion structure in a trumpet shape.

[0012] A plurality of bottom hanging bars are arranged at the lower part of the vertical extension part, and the indoor water receiving tray is fixed by the bottom hanging bars. The outer diameter of the indoor water receiving tray is larger than the outer diameter of the vertical extension part.

[0013] The indoor water receiving tray is arranged in a bowl-shaped structure, and a controllable drain outlet is arranged at the bottom center of the water receiving tray. The controllable drain outlet can be a drain pipe with a valve.

[0014] The utility model has the following beneficial effects: the utility model has an exhaust area between the wind tube and the wind cap, a base is provided on the outside of the wind tube, a fan is provided inside the wind tube, the bottom of the wind tube is a vertical extension part, and the vertical extension part extends to the inside of the building; an indoor water receiving tray is fixed at the bottom of the vertical extension part, and a drain port is provided at the bottom of the indoor water receiving tray. Its beneficial effects can be summarized as follows: 1. It effectively prevents rain or condensed water from dripping into the room, and can guide the liquid to a fixed point through the diversion device; 2. It is easy to install and use, and is equipped with a gravity check valve or an electric valve, which can effectively prevent natural wind from backflowing or small animals, dust, foreign objects, etc. from entering the room. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 for Figure 1 Schematic diagram of the AA section structure;

[0018] Figure 3 for Figure 1 Schematic diagram of the BB cross-section structure;

[0019] Figure 4 This is a schematic diagram of the top view structure of the utility model;

[0020] In the figure, 1. hood, 11. top hanging ring, 12. top hanging rod, 2. air cylinder, 3. base, 4. vertical extension part, 41. bell mouth, 5. bottom hanging rod, 6. water collecting tray, 61. drain outlet, 62. internal flange, 7. fan, 71. fan bracket, 8. gravity check valve. DETAILED DESCRIPTION

[0021] The following is an explanation of the embodiments of the present invention by specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The various details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the terms used in the embodiments of the present invention are intended to describe specific implementation schemes, not to limit the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are usually carried out under conventional conditions or under the conditions recommended by the manufacturers.

[0022] As shown in the attached drawings, a roof fan with a built-in water collecting pan includes a wind tube 2 with a circular structure, a hood 1 is fixed on the upper part of the wind tube 2, and an exhaust area is arranged between the wind tube 2 and the hood 1. Such exhaust area can be realized by supporting the wind tube 2 and the hood 1. In this embodiment, a top hanging ring 11 is arranged on the top of the hood 1 as a hanging part, and a top hanging rod 12 is arranged on the bottom of the hood 1 as a supporting part to be fixed to the wind tube 2; the top hanging ring 11 and the top hanging rod 12 can be designed as an integrated structure that passes through the hood 2. Of course, on this basis, those skilled in the art can also fix the two parts on the upper and lower sides of the hood 1 respectively. The top hanging ring 11 is used to realize the hoisting force, and the top hanging rod 12 is used for middle support.

[0023] The outside of the wind tube 2 is provided with a square structure base 3, and the inside of the wind tube 2 is fixed with a fan 7. There are many ways to fix the fan, and a plurality of radial support plates can be used to fix the fan tube, and a fan bracket 71 can also be used to support the fan 7. In this embodiment, considering the heat dissipation efficiency of the fan, it is preferred to use Figure 2 The fan bracket 71 shown supports the fan 7 in this manner.

[0024] The bottom of the wind tube 2 is a vertical extension part 4. Those skilled in the art can process the wind tube 2 and the vertical extension part 4 into an integrated structure. This structure may increase the manufacturing cost and difficulty, but is relatively simple to assemble. In this embodiment, the bottom of the wind tube 2 and the vertical extension part 4 can be set separately. The lower end of the wind tube 2 is provided with a fixing hole, and the upper part of the vertical extension part 4 is also provided with a fixing hole. The vertical extension part 4 extends to the interior of the building; the bottom of the vertical extension part 4 is fixed with an indoor water receiving tray 6, and the bottom of the indoor water receiving tray 6 is provided with a drain port 61.

[0025] In order to achieve indoor ventilation, the utility model is provided with a plurality of bottom hanging rods 5 at the lower part of the vertical extension part 4, and the indoor water receiving pan 6 is fixed by the bottom hanging rods 5. When the indoor water receiving pan 6 is set, its outer diameter is required to be larger than the outer diameter of the vertical extension part 4.

[0026] Inside the vertical extension part 4, a wind valve is arranged at the lower part of the fan 7, and the wind valve is used to control whether indoor and outdoor ventilation is performed. In this embodiment, the wind valve adopts a gravity check valve 8, which automatically opens ventilation when the fan 7 is working, and sinks to close when the fan is turned off.

[0027] Furthermore, the bottom of the vertical extension portion 4 is expanded outwardly. This outward expansion structure is in the shape of a trumpet, which can increase the indoor wind guide area and increase the air suction efficiency during exhaust within a certain range.

[0028] The indoor water receiving tray 6 used in the present invention is arranged in a bowl-shaped structure, and a controllable drain outlet is arranged at the bottom center of the water receiving tray 6. The controllable drain outlet can be a drain pipe with a valve.

[0029] In order to improve the fixing strength of the indoor water receiving pan 6, in this embodiment, a circle of internal flange 62 is fixed inside the indoor water receiving pan 6, and the bottom hanging rod 5 is fixed, such as Figure 2 , 3 As shown, the top of the bottom hanging rod 5 is locked with the inner wall of the vertical extension part 4, and the bottom of the bottom hanging rod 5 is horizontally bent 90 degrees and locked with the internal flange 62. Through this fixing method, the indoor water collection tray 6 can be stably hoisted and fixed.

[0030] In summary, the utility model adds a bell mouth 41 at the bottom of the base 3 of the roof fan for use as a collector duct, and is combined with an internal gravity check valve 8 to effectively increase the exhaust efficiency and avoid backflow of external airflow. An indoor water collection tray is added to the bottom of the duct 3 to realize the water collection function.

[0031] The utility model adds a bell mouth 41, which is conducive to the diversion of airflow and can improve the exhaust performance. At the same time, a gravity check valve can be added to prevent wind and rain from flowing back. The indoor water receiving tray 6 is connected to the vertical extension part 4 through the bottom hanging rod 5, which is convenient for disassembly and assembly. The beneficial effects of the utility model can be summarized as follows: 1. It effectively prevents rain or condensed water from dripping into the room, and can divert the liquid to a fixed point through the diversion device; 2. It is easy to install and use, and is equipped with a gravity check valve or an electric valve, which can effectively prevent natural wind from flowing back or small animals, dust, foreign objects, etc. from entering the room.

Claims

1. A roof fan with a built-in water tray, characterized in that: It includes an air duct, a hood is fixed on the upper part of the air duct, an exhaust area is arranged between the air duct and the hood, a base is arranged on the outside of the air duct, a fan is arranged inside the air duct, the bottom of the air duct is a vertical extension part, and the vertical extension part extends to the inside of the building; an indoor water receiving tray is fixed at the bottom of the vertical extension part, and a drainage outlet is arranged at the bottom of the indoor water receiving tray.

2. A roof fan with a built-in water tray as claimed in claim 1, characterized in that: The top of the hood is provided with a hanging part, and the bottom of the hood is provided with a supporting member fixed to the wind tube; the hanging part and the supporting member can be an integrated structure penetrating the hood.

3. A roof fan with a built-in water tray as claimed in claim 1, characterized in that: An air valve is arranged inside the air cylinder or the vertical extension part at the upper part or the lower part of the fan, and the air valve is a gravity check valve or an electric valve.

4. A roof fan with a built-in water tray as claimed in claim 1, characterized in that: The bottom of the air duct is an outward expansion structure, and the outward expansion structure is arranged in a trumpet shape.

5. A roof fan with a built-in water tray as claimed in claim 1, characterized in that: A plurality of bottom hanging rods are arranged at the lower part of the vertical extension part, and the indoor water receiving tray is fixed by the bottom hanging rods.

6. A roof fan with a built-in water tray as claimed in claim 1, characterized in that: The outer diameter of the indoor water receiving tray is larger than the outer diameter of the vertical extension portion.

7. A roof fan with a built-in water tray as claimed in claim 1, characterized in that: The indoor water receiving tray is arranged in a bowl-shaped structure, and a controllable drain outlet is arranged at the bottom center of the water receiving tray.

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