External flow guide device

Abstract

The utility model belongs to the technical field of public exhaust of residential kitchens and bathrooms, and particularly relates to an external flow guide device. Comprising a shell, an air inlet is formed in one side of the shell, and an air inlet branch pipe is connected with the air inlet; one end of the flow guide plate is arranged below the position, close to the air inlet, in the shell, the two sides of the flow guide plate are combined with the shell, the other end of the flow guide plate is combined with the upper portion of the shell to form an air outlet, and the flow guide plate, the shell, the air inlet and the air outlet jointly form a flow guide cavity. The air inlet section center point in the opening direction of the air inlet is lower than the air outlet section center point of the air outlet; the utility model not only can meet the requirement of diversion inclined upward exhaust, but also does not occupy the ventilation area of a public exhaust passage, and has the characteristics of quick installation and simple and convenient maintenance.

Description

Technical Field

[0001] This utility model belongs to the field of residential kitchen and bathroom public exhaust technology, specifically relating to an external air diversion device. Background Technology

[0002] In residential kitchen and bathroom shared exhaust systems, the check valve panel is installed on the outer wall of the shared exhaust duct, while the flow guide device or valve body is inside the shared exhaust duct. After the exhaust gas from the range hood enters the shared exhaust duct, it is guided and deflected towards the exhaust. This inevitably occupies the ventilation area inside the shared exhaust duct, creating a large wind resistance, causing exhaust difficulties, and even backflow of exhaust gas. Utility Model Content

[0003] The purpose of this utility model is to propose an external flow guiding device that can both guide the upward exhaust and not occupy the ventilation area of ​​the public exhaust duct, and has the characteristics of quick installation and easy maintenance.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An external flow guiding device includes a housing, an air inlet is provided on one side of the housing, and an air inlet branch pipe is connected to the air inlet;

[0006] One end of the guide plate is set inside the housing near the air inlet, and its two sides are combined with the housing. The other end of the guide plate is combined with the upper part of the housing to form an air outlet. The guide plate, housing, air inlet and air outlet (5) together form a guide cavity. The center point of the air inlet cross section in the opening direction of the air inlet is lower than the center point of the air outlet cross section.

[0007] Furthermore, the upper part of the shell has a sloped and / or curved surface structure.

[0008] Furthermore, the guide plate is a non-movable component.

[0009] Furthermore, this external airflow diversion device is installed in the common exhaust duct of a residential kitchen or bathroom;

[0010] When installed in a common exhaust duct, the flow guide cavity is located outside the common exhaust duct.

[0011] Furthermore, the guide plate has a sloped and / or arc-shaped structure.

[0012] Furthermore, the air deflector is provided with mounting accessories on the side near the air outlet, the mounting accessories being hooks and / or folded edges.

[0013] Furthermore, the flow guiding device is also equipped with a fire prevention device, which is restricted to a normally open state by a fusible device. When a fire occurs, the high temperature causes the fusible device to release the fire prevention valve plate, which changes from a normally open state to a normally closed state, cutting off the air passage between the air inlet and the air outlet.

[0014] Furthermore, in the fireproof device: the fireproof valve plate is rectangular or butterfly-shaped, and is used to block the air outlet or air inlet respectively.

[0015] In some designs, the fan outlet is equipped with a quick-connect structure for quick connection or disconnection between the outlet and the duct connector.

[0016] With the above technical solutions, the flue gas is guided when it enters the public exhaust duct, which meets the requirement that the exhaust direction is consistent with the main exhaust direction, eliminates the wind curtain effect, and does not occupy the ventilation area inside the public exhaust duct, reducing wind resistance and energy consumption. In particular, the structure is simple and easy to install. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram after installation in Example 1;

[0019] Figure 3 This is a partially enlarged schematic diagram of the installation accessories in Example 1;

[0020] Figure 4 This is a schematic diagram of the normally open state of the fire protection device in Example 1;

[0021] Figure 5 This is a schematic diagram of the fire protection device in the closed state in Example 1;

[0022] Figure 6 This is a schematic diagram of the normally open state of the fire protection device in Example 2;

[0023] Figure 7 This is a schematic diagram of the fire protection device in the closed state in Example 2. Detailed Implementation

[0024] Any feature disclosed in this specification, unless otherwise stated, may be replaced by other equivalent or similar features. That is, unless otherwise stated, each feature is merely one example of a series of equivalent or similar features.

[0025] The following is in conjunction with the appendix Figure 1 The specific embodiments of this utility model will be described in detail below. Example 1

[0026] Reference Figure 1As shown, this utility model provides an external flow guiding device, comprising:

[0027] The housing 1 has an air inlet 2 on one side, and an air inlet branch pipe 3 is connected to the air inlet 2. One end of the guide plate 4 is located inside the housing 1 below the air inlet 2, and its two sides are combined with the housing 1. The other end is combined with the upper part of the housing 1 to form an air outlet 5. The guide plate 4, the housing 1, the air inlet 2 and the air outlet 5 together form a guide cavity.

[0028] The center point 2' of the air inlet 2 in the opening direction is lower than the center point 5' of the air outlet 5.

[0029] Furthermore, the upper part of the shell 1 has a sloped and / or curved surface structure, and the guide plate 4 is a non-movable component.

[0030] When installed in a common exhaust duct, the entire flow guide cavity is located outside the common exhaust duct.

[0031] Furthermore, the guide plate 4 is provided with an installation accessory 6 on the side near the air outlet 5. In this embodiment, the installation accessory is a hook. The hook reciprocates coaxially under the action of a spring and hangs on the pipe wall of the common exhaust channel, which facilitates temporary fixation during installation.

[0032] Furthermore, a fireproof device 7 is also provided. The fireproof device 7 is restricted to a normally open state by a fusible device. When a fire occurs, the high temperature causes the fusible device to release the fireproof valve plate 7-1, and the fireproof valve plate changes from a normally open state to a normally closed state, cutting off the air passage between the air inlet and the air outlet.

[0033] Furthermore, the fire damper plate 7-1 has a rectangular structure and is used to block the air outlet 5. Example 2

[0034] In this embodiment, the fireproof valve plate 7-1 of the fireproof device 7 adopts a butterfly structure. Normally it is in the open state. When a fire occurs, the high temperature causes the fuse to release the fireproof valve plate 7-1, and the butterfly fireproof valve plate changes from the normally open state to the normally closed state, cutting off the air passage between the air inlet and the air outlet.

[0035] The rest is the same as in Example 1.

[0036] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. An external flow guide device, comprising a housing (1), one side of the housing (1) is provided with an air inlet (2), an air inlet branch pipe (3) is connected with the air inlet (2); a flow guide plate (4) is arranged in the housing (1) and below the air inlet (2) at one end, the two sides of the flow guide plate (4) are combined with the housing (1), the other end of the flow guide plate (4) is combined with the upper part of the housing (1) to form an air outlet (5), the flow guide plate (4), the housing (1), the air inlet (2) and the air outlet (5) together form a flow guide cavity, the air inlet cross section center point (2') of the opening direction of the air inlet (2) is lower than the air outlet cross section center point (5') of the air outlet (5). characterized in that The upper part of the housing (1) is a slope and / or arc surface structure.

2. The external flow directing device of claim 1, wherein: The flow guide plate (4) is a non-moving component.

3. The external flow directing device of claim 1, wherein: The external flow guide device is installed in a public exhaust duct of a kitchen or bathroom of a residence.

4. The external flow directing device of claim 1, wherein: When installed in the public exhaust duct, the flow guide cavity is located outside the public exhaust duct. The flow guide plate (4) is a slope and / or arc surface structure.

5. The external flow directing device of claim 1, wherein: The flow guide plate (4) is provided with a mounting auxiliary part (6) on the side of the air outlet (5), the mounting auxiliary part is a hook and / or a folded edge.

6. The external flow directing device of claim 1, wherein: The flow guide device is further provided with a fireproof device (7), the fireproof device (7) is limited to a normally open state by a fuse device, when a fire occurs, high temperature causes the fuse device to release a fireproof valve piece (7-1), the fireproof valve piece changes from a normally open state to a normally closed state, cutting off the air passage between the air inlet and the air outlet.

7. The external flow directing device of claim 1, wherein: In the fireproof device (7), the fireproof valve piece (7-1) is rectangular or butterfly-shaped, respectively used for plugging the air outlet (5) or the air inlet (2).

8. The external flow directing device of claim 7, wherein: ​

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