Range hood and external fan air supply device for ventilating duct

Abstract

An external fan air supply device for a range hood and a ventilation pipeline is composed of an air supply device, a fan, a pipeline and a sealing connecting piece. The air supply device is an innovative core component and can be made of metal or non-metal materials through machining or injection molding and other processes and equipment. The air supply device is simultaneously connected with the fan arranged outside the pipeline and the smoke exhaust pipeline or the ventilation pipeline of the range hood, the flow guide structure is guided through the air supply device during working, airflow needing to be exhausted or conveyed is sucked and guided out, and therefore the oil smoke exhaust or ventilation effect is achieved. Therefore, the problems that the fan is arranged in the range hood or the ventilating duct, oil dirt and dust are prone to being accumulated, potential safety hazards of fire safety electricity utilization are caused, and cleaning and maintenance are inconvenient are solved, and meanwhile the effective space and gas passing ability in the range hood and the ventilating duct are improved. The safety, the practicability and the application scene universality of the method can generate remarkable economic benefits.

Description

[0001] Technical field: Domestic and commercial kitchen hoods and duct ventilation technology.

[0002] Background technology: Current status and defects: The fan motors of existing household and commercial kitchen range hoods are installed in the exhaust or ventilation ducts. During use, the oil stains and dirt generated by the oil smoke and hot steam are easy to adhere to the fan motor, blade surface and the inner wall of the range hood and exhaust duct, which need to be cleaned frequently and are not easy to clean; the fan is installed inside the exhaust duct of the range hood, which is inconvenient to disassemble and clean frequently. Therefore, a lot of oil and dirt are easily accumulated on the surface of the motor to form a fire hazard, and fires caused by this occur frequently.

[0003] The fan motors of residential, commercial and industrial duct ventilation systems are generally installed in ventilation ducts. Some industrial and mining enterprises need to transport or discharge flammable, dusty and harmful gases through ventilation ducts during the production process. Once the fan motor, power supply and circuit fail, as well as possible electric sparks, electrostatic induction, etc., they will pose potential safety hazards, which may lead to catastrophic safety accidents.

[0004] Since the fan motor is installed in the range hood exhaust duct or the ventilation system duct, it occupies the effective space inside the duct. In order to meet the effective working wind pressure, wind speed and air volume of the ventilation system, it is necessary to increase the fan power to ensure performance, which also increases energy consumption and usage costs.

[0005] The present invention designs the fan motor outside the range hood exhaust duct or the ventilation system duct, and guides the airflow through the connected air supply device to achieve the oil fume exhaust or ventilation effect during operation, thereby specifically solving the fire safety and electricity safety hazards and the inconvenience of cleaning and maintenance caused by the fan motor being set in the range hood duct or the ventilation duct, while improving the effective space utilization and gas permeability of the range hood and the ventilation duct.

[0006] The present invention has novelty, creativity and practicality in the technical field and application field of pipeline ventilation. Summary of the invention:

[0007] In order to solve the existing technical problems of the prior art and products described in the background technology, the present invention provides: an external fan air supply device for a range hood and a ventilation duct.

[0008] The present invention is achieved through the following technical solutions:

[0009] The present invention is composed of an air supply device, a fan motor, a pipeline and a pipeline sealing connector; when working, the fan motor generates a rated working pressure airflow, and through the air supply device guide structure connected to the pipeline and the gas drainage effect, the gas to be discharged is drained to the air intake pipeline and discharged through the exhaust pipeline, thereby achieving the effect of exhausting oil smoke and ventilation; due to the design of the air supply device, the fan motor structure can be arranged outside the ventilation duct, while ensuring the gas discharge effect, thereby specifically solving the fire safety and electricity safety hazards caused by the fan motor being arranged in the range hood or ventilation system pipeline, which is easy to accumulate oil stains and flammable dust, and the disadvantages of being difficult to clean and maintain, and at the same time improving the effective space utilization and gas permeability of the range hood and ventilation system pipeline; the connecting pipe fittings and flange connection seals between the air supply device and the fan motor are designed and made of vibration-damping and noise-isolating materials such as shock-absorbing rubber, so the whole device system has a certain effect of reducing resonance and noise; the overall structure of the device adopts a modular design, the structure is simple, and it is easy to manufacture, install, maintain, and clean, and it is easy to use the present invention for partial replacement in newly built or in-use ventilation duct systems, and to apply it in household and commercial range hoods.

[0010] Compared with the prior art, the present invention has the following beneficial effects: the present invention arranges the fan motor outside the duct of the range hood or ventilation system through the structural design of the air supply device, on the premise of meeting the effective working wind pressure, wind speed and air volume required by the range hood and the ventilation system duct, thereby reducing safety hazards and improving safety; due to the simple and easy structure and availability, the manufacturing and use costs of the range hood or ventilation system are not increased much, and the application scenarios are clear, wide and economical; the use of vibration-damping and noise-isolating materials and the structural design can reduce environmental noise pollution in households, commercial kitchens and application scenarios with ventilation systems. Description of the drawings:

[0011] Figure 1 : Illustration of the system structure and components of the range hood and ventilation duct external fan air supply device.

[0012] 3 air supply device, 1 air intake duct, 5 exhaust duct, 2, 4, 10 flange sealing connectors,

[0013] 6. Axial fan motor, 7. Vibration damping connecting pipe, 8. Vibration damping connecting pipe fastener, 9. Pipe connecting piece.

[0014] Figure 2 : Cross-sectional view of the air supply device structure and schematic diagram of the air flow direction, 3 air supply device, 11 the air supply device and the air intake duct connection cavity, 12 the air supply device fan motor pressure air flow inlet cavity, 13 the air intake duct connection cavity 11 and the pressure air flow inlet cavity 12 structure, 14 the pressure air flow inlet and structural support plate, 15 the pressure air flow guide and the air supply device 3 and the exhaust duct 5 connection structure, the arrow in the figure schematically indicates the gas flow direction.

[0015] Figure 3 , Figure 4 : Schematic diagram of the single body structure and appearance of the air supply device 3.

[0016] Figure 5 : Schematic diagram of the device combination structure with the air supply device 3 and the axial flow fan motor 6 as the main components.

[0017] Figure 6 : Schematic diagram of the combined structure of the vortex fan motor 16 air inlet 17 and the air supply device 3.

[0018] Figure 7 : Schematic diagram of the application of the air supply device 3 axial flow fan motor 6 in the wall-mounted range hood 18.

[0019] Figure 8 : Schematic diagram of the application of the vortex fan motor 16 of the air supply device 3 in the wall-mounted range hood 19.

[0020] Fig. 9 : A schematic front view of the air supply device 3, the axial flow fan motor 6, which is used in the range hood and stove integrated machine.

[0021] Fig.10 : A rear view showing the application of the air supply device 3, axial flow fan motor 6 in the range hood and stove all-in-one machine.

[0022] Fig.11 : The radial dimensions of the air supply device 3 and the fan motor account for about half of the depth of the range hood and stove integrated machine.

[0023] Fig.12 Fig.13 Fig.14 Fig.15 : The air supply device 3 has an axial flow fan motor 6 or a vortex fan motor 16, and the modular structure can be arranged and combined into different structural forms for use in different spatial positions and different application scenarios. Specific implementation method:

[0024] The present invention is composed of an air supply device, a fan motor, a pipeline and a pipeline sealing connector. The air supply device 3 is an innovative and practical core component. It can be manufactured using metal or non-metal materials through mechanical sheet metal welding or injection molding and other process methods, using common general-purpose mechanical equipment. The fan motor, pipeline and pipeline sealing connector are common general-purpose structural products. Therefore, the present invention has good availability.

[0025] The present invention adopts a modular structure, which is simple and easy to process. The supporting parts have good availability and economy, are easy to install, repair and clean, and have good practicality. It can be used for upgrading household or commercial range hoods to improve safety and ease of use, and can also be used for newly built ventilation systems. It can partially replace the existing ventilation duct system, so it has a wide range of application scenarios and can produce significant social and economic benefits.

Claims

1. An oil engine and a ventilation duct external fan air supply device, characterized in that: include: The air supply device is connected to the air intake duct cavity 11, the air supply device fan motor pressure air flow introduction cavity 12, the air intake duct connection cavity 11 and the pressure air flow introduction cavity 12 form a structure 13, the pressure air flow introduction and structural support plate 14, the pressure air flow guide and air supply device 3 are connected to the exhaust duct 5 to form a structure 15, and the air supply device 3 is connected to the duct and the fan motor with a flange sealing connector. The above-mentioned structures and components are made of metal or non-metal and combined to form the air supply device 3, which has the effect of improving the traditional structural form of installing a fan motor in a range hood or ventilation duct.

2. The range hood and ventilation duct external fan air supply device according to claim 1, characterized in that: It also includes a vibration-damping connecting pipe 7 made of a vibration-damping rubber material, which has vibration-damping and noise-isolating effects.

3. The range hood and ventilation duct external fan air supply device according to claims 1 and 2, characterized in that: By combining and assembling with the range hood housing and cabinet, or with the ventilation duct structure, the product structure forms of Figures 7 to 15 are formed, forming the effect of a range hood or ventilation duct assembly with an external fan air supply device structure.

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