CN112268304A

CN112268304A - Range hood of high efficiency entrapment

Info

Publication number: CN112268304A
Application number: CN202011295318.9A
Authority: CN
Inventors: 刘俊杰; 刘智琳
Original assignee: Tianjin University
Current assignee: Tianjin University
Priority date: 2020-11-18
Filing date: 2020-11-18
Publication date: 2021-01-26

Abstract

The invention discloses a range hood with high-efficiency trapping, comprising a range hood housing that can be installed on a side wall, an inner housing is installed in the range hood housing, and an air supply port is provided in the inner housing, which can be used Driven by a cross-flow fan, and at the same time, an air suction port is set at the side of the range hood housing against the wall; an oil leakage net and an oil collection tank are installed above the air suction port; a motor is installed in the range hood housing, and a connecting rod is installed , The transmission rod drives the baffle to open and close with the power-on state, hinges are installed on both sides of the range hood housing, and are connected with the baffle; A smoke exhaust fan is installed in the casing, and the air outlet of the smoke exhaust fan is communicated with the inlet of the exhaust duct arranged through the air outlet. To achieve the same trapping effect, the smoke exhaust method proposed by the invention greatly reduces the required exhaust air volume, correspondingly reduces noise and energy consumption, and achieves the purpose of energy saving, emission reduction and noise reduction.

Description

Range hood of high efficiency entrapment

Technical Field

The invention relates to a range hood, in particular to a range hood capable of being trapped at high efficiency.

Background

In the modern development of cities, almost all kitchens of urban residential buildings are provided with the range hoods. The pumping and exhausting process of the range hood can be approximately regarded as point-sink type pumping, the larger the theoretical upper air exhausting amount is, the higher the efficiency is, the more the air amount is increased properly, which is beneficial to improving the effect of the range hood, but because of the national requirement on building energy saving, the better and better the sealing performance of the building enclosure structure is, meanwhile, the influence of cooking habits and outdoor air quality is received, a door and a window are closed frequently in the cooking process, so that natural air supplement often cannot meet the air supplement requirement of a kitchen exhaust system, and simultaneously, because in the air duct of a high-rise building, the influence of air pressure is received, the actual range hood used; meanwhile, under the condition of windowing in the actual use process, external unstable airflow can greatly affect the trapping efficiency of the range hood, and the effect of the range hood can be greatly reduced due to the interference of environmental airflow (including personnel walking and the like), so that the serious indoor pollution condition is caused; in addition, the energy collecting and energy efficiency area of the range hood is generally in an area of 40-45 cm below the range hood, but due to the requirement of an operation space, the range hood and a gas cooking bench have a mounting height of 65-80 cm, so that the range hood cannot comprehensively suck cooking fume and other harmful gases generated by fuel combustion, particularly splashed small particles. A large amount of unremoved smoke can seriously affect the indoor air quality, and further affect the body health of people.

The existing range hood enters a big air volume era, the range hood on the market starts with increasing the air volume in order to improve the collecting efficiency, and a plurality of products can instantly generate 20m³The strong air quantity per minute actually increases the negative pressure and energy consumption by increasing the air discharge quantity; in addition, in order to improve the trapping efficiency, it is a method to increase the baffle by utilizing the coanda effect (wall attachment effect), for example, the range hood disclosed in the chinese patent with the application number CN 111006276 a has two baffles on the front side, but the side escape of the range hood is actually much more serious than the front side escape, and the two baffles on the front side affect the beauty. Therefore, the invention overcomes the defects of the prior art and provides the range hood which can collect oil smoke with high efficiency and discharge the oil smoke outdoors in time without additionally increasing air volume.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the range hood with low noise, controllable airflow, stable air quantity and high trapping efficiency, which is easy to maintain.

In order to achieve the purpose, the invention adopts the technical scheme that: the utility model provides a range hood of high efficiency entrapment, includes the range hood casing, set up the inner shell in the range hood casing set up two air outlets in the inner shell and be used for range hood's tonifying wind, can use the cross-flow fan drive the face of the nearly wall department of bottom plate of range hood casing be equipped with the inlet scoop, with the blast pipe intercommunication, supply upwards to bleed, it must control to need to pay attention to the inlet scoop is with the distance of air outlet and the wind speed of air outlet, the wind speed of air outlet should not be the undersize, avoids the air current not just to be siphoned away through the culinary art district and forms the short circuit air current, should not be too big simultaneously, avoids causing the energy. The range hood is characterized in that an oil leakage net is installed above the air inlet of the range hood, the oil filter net is a conical oil net, an oil collecting groove is formed in the periphery of the bottom of the oil filter net, the bottom surface of the oil collecting groove of the oil filter net is an inclined surface, and a long-strip-shaped oil collecting groove is formed in the lower side of the inclined surface and used for collecting leaked oil of the oil leakage net in a centralized mode. Hinges are arranged on two sides of the shell and used for connecting the baffle plates; and a transmission rod, a connecting rod and a motor are arranged in the shell and used for driving the baffle to open and close along with the starting state. The range hood casing in install smoke exhaust fan, smoke exhaust fan's air outlet be linked together with the import that passes the exhaust pipe that the air exit set up, exhaust pipe's export access flue.

Compared with the prior art, the invention has the following beneficial effects:

(1) compared with the traditional range hood, the smoke exhaust mode provided by the invention has the advantages that the same trapping effect is achieved, the required exhaust amount is greatly reduced, the noise and the energy consumption can be correspondingly reduced, and the purposes of saving energy, reducing emission and reducing noise are achieved.

(2) Compared with other range hoods, the range hood is additionally provided with the air supply opening, and the cross-flow fan can be used for driving, so that the problem that the negative pressure of the existing range hood is too large and the air supply is insufficient is solved, the entrainment effect on oil smoke pollutants is accelerated, the pollutants can be quickly sucked into the hood, and an air curtain can be formed to prevent the front of the oil smoke from escaping.

(3) The automatic baffle is arranged on the side surface of the range hood, and the baffle is automatically retracted in a non-working state, so that the overall appearance of the range hood is not influenced; under the working state, the oil smoke preventing device can be opened along with the starting state, so that the side face of the oil smoke is prevented from escaping.

(4) By the measures, the oil smoke can be effectively prevented from escaping, the trapping efficiency of the range hood is improved to a large extent, oil smoke pollutants are removed as soon as possible, and the indoor environment is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, the drawings in the following description are only 1 embodiment of the present invention, and other drawings can be obtained according to the drawings without creative efforts for those skilled in the art.

FIG. 1 is a cross-sectional view of a preferred embodiment of the present invention in an inoperative condition;

FIG. 2 is a front view of the preferred embodiment of the present invention in its operating condition;

FIG. 3 is a side view of the preferred embodiment of the present invention in an operational state;

FIG. 4 is a schematic view of the connection of the baffle plates of the preferred embodiment of the present invention;

FIG. 5 is a schematic view of the structure of the oil screen according to the preferred embodiment of the present invention;

FIG. 6 is a schematic view of the airflow pattern after the baffle is installed according to the preferred embodiment of the present invention.

Detailed Description

The invention is described in detail below with reference to specific embodiments and the attached drawings.

The invention discloses a high-efficiency trapping range hood as shown in the attached drawing, which comprises a range hood shell 10, wherein an inner shell 11 is arranged in the range hood shell 10,

air supplementing holes

61 and 62 are respectively formed in two sides in the inner shell 11, a cross-flow fan 6 can be arranged for driving, and an air suction hole 7 is formed in the range hood shell 10 close to the wall; and an oil leakage net 4 and an oil collecting tank 5 are arranged above the air suction opening 7 and used for collecting oil leaked from the oil leakage net. The range hood housing 10 is internally provided with a motor 12, the baffle is driven to open and close along with the starting state through a connecting rod 13 and

transmission rods

141 and 142 on two sides, and

hinges

81 and 82 are respectively arranged on two sides of the range hood housing 10 and connected with the

baffles

91 and 92.

The top of range hood casing 10 is provided with air exit 1 range hood casing 10 in install smoke exhaust fan 3, smoke exhaust fan 3 can use two air inlet centrifugal fan of multiple wing formula, smoke exhaust fan 3 air outlet and the import of passing exhaust pipe 1 that air exit 2 set up be linked together, the export of exhaust pipe 1 insert the flue.

The oil leakage net 4 is installed above the air suction opening 7, the oil filter net 4 is a conical oil filter net, oil collecting grooves are formed in the periphery of the bottom of the oil filter net 4, the bottom surfaces of the oil collecting grooves of the oil filter net 4 are inclined planes, and long-strip-shaped oil collecting grooves 5 are formed in the lower sides of the inclined planes and used for collecting leaked oil of the oil leakage net in a centralized mode.

The

baffles

91 and 92 are connected with the motor 12 through the

transmission rods

141 and 142 and the connecting rod 13, and are connected with the range hood shell 10 through the

hinges

81 and 82, so that when the range hood is not in operation, the range hood can be retracted below a range hood base plate and opened along with the starting-up state when the range hood is in operation, the airflow can flow along with the surface of an object by the coanda effect (wall attachment effect), the trapping efficiency can be improved to a large extent, and the airflow form is shown in fig. 6.

The invention can achieve the expected purpose according to the description of the invention with the attached drawings, but the mode for improving the collection efficiency in the invention can be used for the design of other forms of range hoods, and plays a role in improving the oil smoke collection efficiency. However, the suction inlet of the corresponding range hood cannot work in harmony with the suction inlet, and the action effect is weaker than that of the preferred embodiment of the invention.

Claims

1. The utility model provides a range hood of high efficiency entrapment, includes the range hood casing of mountable on the side wall, its characterized in that: an inner shell is arranged in the range hood shell, an air supplement opening is formed in the inner shell and can be driven by a cross-flow fan, and an air suction opening is formed in the side, close to the wall, of the range hood shell; an oil leakage net and an oil collecting tank are arranged above the air suction opening; a motor is arranged in the range hood shell, a baffle is driven to open and close along with a starting state through a connecting rod and a transmission rod, and hinges are arranged on two sides of the range hood shell and connected with the baffle; the top of the range hood shell is provided with an air outlet, a smoke exhaust fan is installed in the range hood shell, an air outlet of the smoke exhaust fan is communicated with an inlet of an exhaust pipeline penetrating through the air outlet, and an outlet of the exhaust pipeline is connected into a flue.

2. The high efficiency trapping range hood of claim 1, wherein: the oil filter screen is a conical oil filter screen, the periphery of the bottom of the oil filter screen is provided with an oil collecting groove, the bottom surface of the oil collecting groove is an inclined plane, and a long-strip-shaped oil collecting groove is arranged on the lower side of the inclined plane and used for collecting leaked oil of the oil filter screen in a centralized manner.

3. The high efficiency trapping range hood of claim 1, wherein: the baffle is connected with the motor through a transmission rod and a connecting rod, is used as a driving device for opening and closing the baffle and is connected with the range hood shell through a hinge.

4. The high efficiency trapping range hood of claim 1, wherein: the range hood shell is made of stainless steel materials.