Exhaust system for public kitchen

Abstract

The utility model discloses an exhaust system for a public kitchen, which comprises an exhaust fan, a main exhaust outlet, an auxiliary exhaust outlet and a main air cavity, and the exhaust outlet of the exhaust fan is communicated with the outside through an exhaust shaft; the main exhaust outlet is located in the kitchen area and communicates with an exhaust inlet of the exhaust fan. An air outlet of the main air cavity is communicated with an air suction opening of the exhaust fan, at least two air inlets are formed in the main air cavity, and the air inlets are communicated with the auxiliary air outlets in a one-to-one correspondence mode; the auxiliary exhaust outlets are positioned in different functional room areas in the kitchen; an air outlet of the main air cavity is connected with a normally-open electric air valve, an exhaust fan is controlled to independently exhaust air in different areas, and the function of eliminating harmful gas accidents is achieved. The air inlet of the main air cavity is rotationally provided with the air baffle, the air baffle is elastically supported by the supporting spring to point to the air outlet of the main air cavity, air resistance is reduced, and air flow and rapid exhaust are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen ventilation, in particular to an exhaust system for a public kitchen. Background Art

[0002] The purpose of kitchen exhaust is to discharge the fumes and other waste gases generated in the kitchen to ensure the fresh air in the kitchen. For large restaurants or hotels, kitchen exhaust system is an indispensable configuration. In order to provide a more comfortable public kitchen working environment, other functional areas of the public kitchen are often exhausted, such as the washing and disinfection room, the meal preparation room, the main and non-staple food storage, the dressing room, etc., to remove the dirty air generated by personnel activities, as well as harmful components such as benzene and formaldehyde in the decorative materials, to ensure that the air quality in the entire area meets the standards; this often requires the installation of an exhaust system in each exhaust area, which has high manufacturing costs. The existing kitchen multi-zone exhaust system has a long air duct and high wind resistance; the air ducts leading to different areas are independently controlled to open and close, there are many control devices, and the control system is complex. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the above-mentioned prior art and provide an exhaust system for a public kitchen to solve the problems that the air ducts of the existing kitchen exhaust equipment have large wind resistance, the air ducts in different areas need to be controlled by multiple sets of opening and closing mechanisms, and the cost is high.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A ventilation system for a public kitchen comprises an exhaust fan, a main exhaust outlet, an auxiliary exhaust outlet and a total air cavity, wherein the exhaust outlet of the exhaust fan is communicated with the outside through an exhaust shaft; the main exhaust outlet is located in the kitchen area and communicated with the air suction outlet of the exhaust fan; the air outlet of the total air cavity is communicated with the air suction outlet of the exhaust fan, at least two air inlets are arranged on the total air cavity, and the air inlets are respectively communicated with the auxiliary exhaust outlets in a one-to-one correspondence; the auxiliary exhaust outlets are located in different functional room areas in the kitchen.

[0006] Furthermore, it also includes a wind shield and a support spring; the air inlet of the total air cavity is rotatably connected to the wind shield; support springs are arranged on both sides of the rotating wind shield, and the support springs connect the wind shield and the inner wall of the total air cavity so that the wind shield points to the air outlet of the total air cavity.

[0007] Furthermore, it also includes a motor, a rotating shaft, and a push rod; both ends of the rotating shaft are rotatably connected to the main air cavity, and the fixed end of the push rod is connected to the rotating shaft; the output shaft of the motor is drivingly connected to the rotating shaft, and the motor is electrically connected to the exhaust controller; the multiple air inlets of the main air cavity are arranged around the circumference of the rotating shaft; the rotating shaft drives the free end of the push rod to swing in a circle, so that the push rod pushes the wind shield to rotate and block the air inlet of the main air cavity.

[0008] Furthermore, a plurality of push rods are arranged at intervals along the rotating shaft.

[0009] Furthermore, the air outlet of the main air cavity is connected to a normally open electric air valve, and the normally open electric air valve is electrically connected to the exhaust controller.

[0010] Furthermore, the kitchen area and the functional room area are both installed with combustible gas detectors, and the combustible gas detectors are electrically connected to the exhaust controller.

[0011] The utility model has the following beneficial effects: 1. The utility model provides an exhaust system for a public kitchen, including an exhaust fan, a main exhaust port, an auxiliary exhaust port, and a total air cavity. The exhaust port of the exhaust fan is connected to the outside through an exhaust shaft; the main exhaust port is connected to the air intake port of the exhaust fan for sucking air from the kitchen area; the air outlet of the total air cavity is connected to the air intake port of the exhaust fan, and the multiple air inlets of the total air cavity are connected to the auxiliary exhaust ports one by one; the auxiliary exhaust port is used to suck air from the functional room area of ​​the kitchen. The exhaust of different areas in the public kitchen is completed by a set of exhaust fans, and the exhaust system is simple and the manufacturing cost is low.

[0012] 2. The system also includes a wind shield and a support spring arranged in the main air cavity. The wind shield is elastically supported by the support spring so that the air at the air inlet of the main air cavity is guided by the wind shield and flows toward the air outlet of the main air cavity in a directional manner, and the air flow resistance is low.

[0013] 3. The system also includes a rotating shaft and a motor for driving the rotating shaft to rotate. A number of push rods are connected to the rotating shaft. By rotating the push rods, the wind shield is pushed to block the air inlet of the total air cavity, which can reduce or completely cut off the air flow of the corresponding auxiliary exhaust outlet; multiple air ducts can be opened and closed by a set of motors, rotating shafts, and push rods. The opening and closing control structure of the air ducts is simple and the manufacturing cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the system structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the total air cavity of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the utility model when the push rod is not in contact with the wind shield;

[0018] Figure 4 It is a left view of the structure when the push rod of the utility model pushes the wind shield plate to block the air inlet.

[0019] In the figure, 1. exhaust fan; 2. main exhaust outlet; 3. main air chamber; 31. air inlet; 32. air outlet; 4. auxiliary exhaust outlet; 5. functional room area; 6. wind shield; 7. motor; 8. rotating shaft; 9. push rod; 10. normally open electric air valve. DETAILED DESCRIPTION

[0020] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the specific embodiments.

[0021] like Figure 1 As shown, the utility model provides an exhaust system for a public kitchen, comprising an exhaust fan 1, and also comprising a main exhaust outlet 2, an auxiliary exhaust outlet 4, and a total air cavity 3. The exhaust outlet of the exhaust fan 1 is communicated with the outside through an exhaust shaft; the main exhaust outlet 2 is located in the kitchen area and is communicated with the air suction outlet of the exhaust fan 1; the air outlet 32 ​​of the total air cavity 3 is communicated with the air suction outlet of the exhaust fan 1, and at least two air inlets 31 are arranged on the total air cavity 3, and the air inlets 31 are respectively communicated with the auxiliary exhaust outlets 4 in a one-to-one correspondence; the auxiliary exhaust outlets 4 are located in different functional room areas 5 in the kitchen.

[0022] Specifically, the functional room area 5 includes a wash room, a meal preparation room, a main and side food storage, and a dressing room; the auxiliary exhaust vent 4 is used to exhaust the air in the functional room in time, and cooperate with the kitchen fresh air supply system to maintain the indoor air quality.

[0023] A normally open electric air valve 10 is connected to the air outlet 32 ​​of the main air cavity 3, and the normally open electric air valve 10 is electrically connected to the exhaust controller. The normally open electric air valve 10 is controlled to be closed, and the air duct is quickly cut off, so that the exhaust fan 1 only sucks the air in the area where the main exhaust port 2 is located, ensuring sufficient exhaust volume, and playing the role of exhausting harmful gas accidents.

[0024] like Figure 2 As shown, the system also includes a wind shield 6 and a support spring; the air inlet 31 of the total air cavity 3 is rotatably connected to the wind shield 6; support springs are arranged on both sides of the rotation of the wind shield 6, and the support springs connect the wind shield 6 and the inner wall of the total air cavity 3, so that the wind shield 6 points to the air outlet 32 ​​of the total air cavity 3.

[0025] Preferably, the rotating shaft 8 of the wind shield 6 is a damping rotating shaft 8. Under the action of the supporting spring, the wind shield 6 remains stable under the action of the wind force flowing in the air duct. A plurality of wind shields 6 are arranged in the main air cavity 3 to form a plurality of air ducts pointing to the air outlets 32 of the main air cavity 3, which is conducive to the directional flow of air in the area where the auxiliary air outlet 4 is located through the main air cavity 3, thereby reducing wind resistance.

[0026] The system also includes a motor 7, a rotating shaft 8, and a push rod 9; both ends of the rotating shaft 8 are rotatably connected to the main air cavity 3, and the fixed end of the push rod 9 is connected to the rotating shaft 8; the output shaft of the motor 7 is drivingly connected to the rotating shaft 8, and the motor 7 is electrically connected to the exhaust controller; the multiple air inlets 31 of the main air cavity 3 are arranged in a circle around the rotating shaft 8; the rotating shaft 8 drives the free end of the push rod 9 to swing in a circle, so that the push rod 9 pushes the wind shield 6 to rotate and block the air inlet 31 of the main air cavity 3.

[0027] Due to the effect of the supporting spring, the wind shield 6 is subjected to a large external force and can rotate to both sides; the radius of the circle where the free end of the push rod 9 is located is set to A; when the wind shield 6 completely blocks the air inlet 31 of the total air cavity 3, the vertical distance from the wind shield 6 to the rotating shaft 8 is set to B; B is set to be greater than A, so that the push rod 9 can rotate unrestricted in the total air cavity 3, and the free end of the push rod 9 can contact the side of the wind shield 6; it can be understood that B is set to be slightly greater than A, so that when the push rod 9 is perpendicular to the wind shield 6, the wind shield 6 is in a position to completely block the air inlet 31 of the total air cavity 3, such as Figure 4 shown.

[0028] By supporting the wind shield plate 6 with the push rod 9 to block the air inlet 31 of the main air cavity 3, the air flow of the corresponding auxiliary exhaust port 4 can be reduced or completely cut off, thereby playing the role of regional exhaust control; by rotating the push rod 9, different wind shield plates 6 can be driven to rotate, that is, through a set of drivers, the opening and closing control of multiple air ducts can be completed, the opening and closing control structure is simple, and the manufacturing cost is reduced.

[0029] like Figure 3 As shown, a plurality of push rods 9 are arranged at intervals along the rotating shaft 8. The kitchen area and the functional room area 5 are both equipped with combustible gas detectors, which are electrically connected to the exhaust controller; according to the combustible gas detector, the air quality in the public kitchen is known in real time, and the exhaust force of the exhaust fan 1 is reasonably distributed in coordination with the rotation and shielding of the normally open electric air valve 10 and the wind shield 6, so as to exhaust the combustible gas in time.

[0030] In the description of the present invention, terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom", "vertical", and "horizontal" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are merely relational words for the convenience of describing the present invention, and do not necessarily require the present invention to be constructed or operated in a specific direction. They do not specifically refer to any component or element, and cannot be understood as limitations on the present invention.

[0031] The terms "connected" and "connection" in the present invention should be understood in a broad sense. For example, it can be a connection or a detachable connection; it can be a direct connection or an indirect connection through an intermediate component. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0032] The embodiments of the utility model are only a part of the embodiments, not all of the embodiments. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent. This specification is described in accordance with the implementation methods only for the sake of clarity. Those skilled in the art should take the specification as a whole. The technical solutions in the various embodiments can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An exhaust system for a public kitchen, comprising an exhaust fan (1), characterized in that: The invention also comprises a main exhaust port (2), an auxiliary exhaust port (4), and a main air cavity (3); the exhaust port of the exhaust fan (1) is connected to the outside through an exhaust shaft; the main exhaust port (2) is located in the kitchen area and is connected to the air intake port of the exhaust fan (1); the air outlet (32) of the main air cavity (3) is connected to the air intake port of the exhaust fan (1); at least two air inlets (31) are arranged on the main air cavity (3), and the air inlets (31) are connected to the auxiliary exhaust ports (4) in a one-to-one correspondence; the auxiliary exhaust ports (4) are located in different functional room areas (5) in the kitchen.

2. A public kitchen exhaust system as claimed in claim 1, characterized in that: It also includes a windshield (6) and a support spring; the air inlet (31) of the main air cavity (3) is rotatably connected to the windshield (6); support springs are arranged on both sides of the rotating windshield (6), and the support springs connect the windshield (6) and the inner wall of the main air cavity (3), so that the windshield (6) points to the air outlet (32) of the main air cavity (3).

3. The exhaust system for a public kitchen as claimed in claim 2, characterized in that: It also includes a motor (7), a rotating shaft (8), and a push rod (9); the two ends of the rotating shaft (8) are rotatably connected to the main air cavity (3), and the fixed end of the push rod (9) is connected to the rotating shaft (8); the output shaft of the motor (7) is drivingly connected to the rotating shaft (8), and the motor (7) is electrically connected to the exhaust controller; the multiple air inlets (31) of the main air cavity (3) are arranged around the circumference of the rotating shaft (8); the rotating shaft (8) drives the free end of the push rod (9) to swing in a circle, so that the push rod (9) pushes the wind shield (6) to rotate and block the air inlet (31) of the main air cavity (3).

4. A public kitchen exhaust system as claimed in claim 3, characterized in that: A plurality of push rods (9) are arranged at intervals along the rotating shaft (8).

5. The exhaust system for a public kitchen according to claim 1, characterized in that: The air outlet (32) of the main air cavity (3) is connected to a normally open electric air valve (10), and the normally open electric air valve (10) is electrically connected to an exhaust controller.

6. The exhaust system for a public kitchen according to claim 1, characterized in that: The kitchen area and the functional room area (5) are both equipped with combustible gas detectors, and the combustible gas detectors are electrically connected to the exhaust controller.

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