Air exhaust and exchange device

Abstract

The utility model relates to the technical field of ventilating fans, in particular to an air exhaust and exchange device which comprises an air exchange mechanism used for air exhaust and exchange, a connecting mechanism is installed on the outer side of the air exchange mechanism, and positioning mechanisms are installed on the inner side of the periphery of the connecting mechanism. The ventilation mechanism comprises a fan shell, one end of the fan shell is fixedly connected with a connecting buckle, and a built-in fan is installed in the fan shell. The connecting mechanism comprises a sleeve, a connecting clamping groove and a counterbore are formed in the inner side of one end of the sleeve, and positioning grooves are annularly formed in the outer side of the sleeve; the positioning mechanism comprises a round rod, external threads are arranged on the outer sides of the two ends of the round rod, and a button cap is fixedly connected to the top end of the round rod. The fan can be stably installed on the wall surface to be fixed, in the later cleaning process, the fan can be integrally disassembled to be cleaned by rotating the connecting buckle, disassembling is convenient, and in the cleaning process, the fan can be conveniently and rapidly disassembled. Workers do not need to stand at a high position, and safety is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation fans, in particular to an exhaust ventilation device. Background Art

[0002] The exhaust ventilation device used in restaurant kitchens is a system designed to keep the kitchen air clean and suitable by removing smoke, heat, moisture and odor while replenishing fresh air. This system usually includes the following main components:

[0003] Smoke hoods (hoods), smoke exhaust ducts, fume purifiers, smoke exhaust fans, fire dampers, air supply systems, fresh air filters and control systems can effectively remove pollutants in the kitchen and provide a good working environment;

[0004] The smoke exhaust fan is used to generate sufficient airflow to discharge oil smoke and hot air out of the kitchen. After long-term use, a large amount of oil stains are easily attached to the surface of the fan blades, which needs to be cleaned regularly to ensure the stability of the fan operation. The fan is generally installed on the wall through an expansion sleeve, which is not convenient for disassembly during cleaning. Workers need to stand at a high place to clean it, which is troublesome and has a low safety factor during the cleaning process. Therefore, an exhaust ventilation device is proposed to address the above problems. Utility Model Content

[0005] The utility model aims to provide an exhaust ventilation device to solve the problem that the smoke exhaust fan is used to generate sufficient airflow to discharge oil smoke and hot air out of the kitchen. After long-term use, a large amount of oil stains are easily attached to the surface of the fan blades, which need to be cleaned regularly to ensure the stability of the fan operation. The fan is generally installed on the wall through an expansion sleeve, which is not convenient for disassembly during cleaning. Workers need to stand at a high place to clean it, which is troublesome to clean and has a low safety factor during the cleaning process.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An exhaust ventilation device comprises a ventilation mechanism for exhaust ventilation, a connecting mechanism is installed on the outer side of the ventilation mechanism, and a positioning mechanism is installed on the inner side around the connecting mechanism; the ventilation mechanism comprises a fan housing, one end of the fan housing is fixedly connected with a connecting buckle, and a built-in fan is installed inside the fan housing; the connecting mechanism comprises a sleeve, a connecting slot and a countersunk hole are provided on the inner side of one end of the sleeve, and positioning slots are distributed in an annular manner on the outer side of the sleeve; the positioning mechanism comprises a round rod, both ends of the round rod are provided with external threads on the outer side, a button cap is fixedly connected to the top end of the round rod, the outer sides of both ends of the round rod are spirally connected to the threaded holes provided in the middle of the moving blocks through the external threads, and the moving blocks are fixedly connected by elastic sheets.

[0008] As a further optimization of the present invention, the fan casing is T-shaped, two connecting buckles are provided, the connecting buckles correspond to the connecting slots one by one, and the connecting buckle is T-shaped.

[0009] As a further optimization of the present invention, the sleeve and the fan housing have the same axis, four countersunk holes are provided, four positioning mechanisms are provided, the countersunk holes are connected to the positioning grooves, and the button caps are installed inside the countersunk holes.

[0010] As a further optimization of the present invention, the connection slots are provided at the upper and lower ends of the sleeve, and the cross-section of the connection slots is L-shaped.

[0011] As a further optimization of the present invention, the round rod is rotationally connected to the sleeve at the contact position, the round rods are parallel to each other, and the round rods are arranged inside the positioning groove.

[0012] As a further optimization of the present invention, the external thread teeth arranged on the outer sides of the two ends of the round rod are opposite, the angle formed between the round rod and the moving block is 90°, and there are two moving blocks arranged inside any one of the positioning grooves, the moving blocks are slidably connected to the inner wall of the positioning groove, and the moving blocks are parallel to each other.

[0013] As a further optimization of the present invention, the elastic sheet is arc-shaped, a pit is provided at one end of the middle of the elastic sheet away from the sleeve, and a hexagonal groove is provided at one end of the button cap away from the round rod.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] In the utility model, the fan can be stably installed and fixed on the wall by means of the connecting mechanism and the positioning mechanism. During the later cleaning process, the fan can be completely removed for cleaning by rotating the connecting buckle, which is convenient for disassembly. During the cleaning process, there is no need for workers to stand in a high place, which is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is the overall exploded view of the utility model;

[0018] Figure 3 This is a schematic diagram of the installation position structure of the connecting buckle of the utility model;

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

[0020] Figure 5It is a schematic diagram of the positioning mechanism structure of the utility model.

[0021] In the figure: 1. Ventilation mechanism; 11. Fan housing; 12. Connecting buckle; 13. Built-in fan;

[0022] 2. Connecting mechanism; 21. Sleeve; 22. Countersunk hole; 23. Connecting slot; 24. Positioning slot;

[0023] 3. Positioning mechanism; 31. Round rod; 32. External thread; 33. Button cap; 34. Moving block; 35. Threaded hole; 36. Elastic sheet. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0026] See also Figure 1-5 , the utility model provides a technical solution:

[0027] An exhaust ventilation device comprises a ventilation mechanism 1 for exhaust ventilation, a connecting mechanism 2 is installed on the outer side of the ventilation mechanism 1, and a positioning mechanism 3 is installed on the inner side around the connecting mechanism 2; the ventilation mechanism 1 comprises a fan housing 11, a connecting buckle 12 is fixedly connected to one end of the fan housing 11, and a built-in fan 13 is installed inside the fan housing 11; the connecting mechanism 2 comprises a sleeve 21, a connecting slot 23 and a countersunk hole 22 are opened on the inner side of one end of the sleeve 21, and positioning slots 24 are opened in an annular shape on the outer side of the sleeve 21; the positioning mechanism 3 comprises a round rod 31, both ends of the round rod 31 are provided with external threads 32 on the outer side, the top of the round rod 31 is fixedly connected with a button cap 33, the outer sides of both ends of the round rod 31 are spirally connected to the threaded holes 35 opened in the middle of the moving blocks 34 through the external threads 32, and the moving blocks 34 are fixedly connected by elastic sheets 36.

[0028] The fan housing 11 is T-shaped, and two connecting buckles 12 are provided. The connecting buckles 12 correspond to the connecting slots 23 one by one. The connecting buckle 12 is T-shaped, and the connecting slots 23 are provided at the upper and lower ends of the sleeve 21. The cross section of the connecting slots 23 is L-shaped, and the sleeve 21 and the fan housing 11 can be stably connected together.

[0029] As a further implementation of the present invention, the sleeve 21 and the fan housing 11 are coaxial, four countersunk holes 22 are provided, four positioning mechanisms 3 are provided, the countersunk holes 22 are connected to the positioning grooves 24, and the button caps 33 are installed inside the countersunk holes 22. Through the above arrangement, the stability of the overall structure of the device can be further improved;

[0030] As a further implementation of the present invention, the position where the round rod 31 contacts the sleeve 21 is rotatably connected, the round rods 31 are parallel to each other, the round rods 31 are arranged inside the positioning groove 24, the threads of the external threads 32 arranged on the outer sides of the two ends of the round rod 31 are opposite, and the angle between the round rod 31 and the moving block 34 is 90°. There are two moving blocks 34 arranged inside any positioning groove 24, the moving blocks 34 are slidably connected to the inner wall of the positioning groove 24, and the moving blocks 34 are parallel to each other, so that the moving blocks 34 can be stably moved by controlling the rotating round rod 31;

[0031] As a further implementation scheme of the present scheme, the elastic sheet 36 is arc-shaped, and a pit is provided at the middle end of the elastic sheet 36 away from the sleeve 21, and a hexagonal groove is provided at the end of the button cap 33 away from the round rod 31, which can improve the stability of the exhaust ventilation mechanism after the overall installation, and at the same time facilitate the control of the button cap 33 and the round rod 31 to rotate through the hexagonal tool.

[0032] Workflow: During the installation of the circular exhaust ventilation device, the staff first needs to drill a circular hole in the wall to connect to the outside. After the circular hole is drilled, the staff inserts the sleeve 21 into the drilled circular hole, and then uses a hexagonal tool to control the button cap 33 to rotate. During the rotation of the button cap 33, the round rod 31 rotates with it and drives the moving block 34 to move toward the center point of the sleeve 21 at the same time. During the movement of the moving block 34, the elastic sheet 36 is bent and the position of the pitted surface of the elastic sheet 36 is aligned with the drilled hole. The inner wall of the circular hole is tightly attached, so that the sleeve 21 can be stably installed inside the drilled circular hole. After the sleeve 21 is installed, the staff inserts the fan housing 11 into the sleeve 21 to align the connecting buckle 12 with the connecting slot 23, and then rotates the fan housing 11 to stagger the connecting buckle 12 with the connecting slot 23, and the overall installation is completed. After the overall installation is completed, it can be used after power is turned on. The exhaust ventilation mechanism set up in this way is installed in a location with more oil in the restaurant kitchen for use, which is convenient for frequent disassembly and cleaning in the later stage, and has good convenience.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An exhaust ventilation device, comprising a ventilation mechanism (1) for exhaust ventilation, characterized in that: A connecting mechanism (2) is installed on the outside of the ventilation mechanism (1), and a positioning mechanism (3) is installed on the inside of the surrounding of the connecting mechanism (2); The ventilation mechanism (1) comprises a fan housing (11), one end of the fan housing (11) is fixedly connected to a connection buckle (12), and a built-in fan (13) is installed inside the fan housing (11); The connecting mechanism (2) comprises a sleeve (21), one end of which is provided with a connecting slot (23) and a countersunk hole (22) on the inner side, and the outer side of the sleeve (21) is provided with positioning slots (24) in an annular arrangement; the positioning mechanism (3) comprises a round rod (31), both ends of the outer side of the round rod (31) are provided with external threads (32), a button cap (33) is fixedly connected to the top of the round rod (31), the outer sides of both ends of the round rod (31) are spirally connected to a threaded hole (35) provided in the middle of a moving block (34) through the external threads (32), and the moving blocks (34) are fixedly connected to each other through elastic sheets (36).

2. The exhaust ventilation device according to claim 1, characterized in that: The fan housing (11) is T-shaped, two connecting buckles (12) are provided, the connecting buckles (12) correspond to the connecting slots (23) one by one, and the connecting buckles (12) are T-shaped.

3. The exhaust ventilation device according to claim 1, characterized in that: The sleeve (21) and the fan housing (11) share the same axis, the countersunk holes (22) are provided with four, the positioning mechanisms (3) are provided with four, the countersunk holes (22) are communicated with the positioning grooves (24), and the button caps (33) are installed inside the countersunk holes (22).

4. The exhaust ventilation device according to claim 1, characterized in that: The connecting slot (23) is provided at the upper end and the lower end of the sleeve (21), and the cross section of the connecting slot (23) is L-shaped.

5. The exhaust ventilation device according to claim 1, characterized in that: The round rod (31) is rotatably connected to the sleeve (21) at a position where the round rod (31) contacts the sleeve (21), the round rods (31) are parallel to each other, and the round rods (31) are arranged inside the positioning groove (24).

6. The exhaust ventilation device according to claim 1, characterized in that: The threads of the external threads (32) arranged on the outer sides of the two ends of the round rod (31) are opposite to each other, the angle between the round rod (31) and the moving block (34) is 90 degrees, and there are two moving blocks (34) arranged inside any one of the positioning grooves (24), the moving blocks (34) are slidably connected to the inner wall of the positioning groove (24), and the moving blocks (34) are parallel to each other.

7. The exhaust ventilation device according to claim 1, characterized in that: The elastic sheet (36) is arc-shaped, and a pit is provided at one end of the elastic sheet (36) away from the sleeve (21), and a hexagonal groove is provided at one end of the button cap (33) away from the round rod (31).

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