CN201652559U

CN201652559U - Inject type kitchen ventilator

Info

Publication number: CN201652559U
Application number: CN201020188860XU
Authority: CN
Inventors: 冯建民
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-05-07
Filing date: 2010-05-07
Publication date: 2010-11-24
Anticipated expiration: 2020-05-07

Abstract

The utility model discloses an inject type kitchen ventilator, comprising a shell, an electric fan, an inner exhaust pipe and an outer exhaust pipe. The lower surface and the upper surface of the shell are respectively provided with a port A and a port B, and the edge parts of the port A and the port B are respectively connected with the inner exhaust pipe and the outer exhaust pipe in a sealing mode. The inner exhaust pipe is positioned inside the outer exhaust pipe, and the electric fan is installed inside the inner exhaust pipe. Most of the flue gas enters the inner exhaust pipe through the electric fan, kinetic energy generated by air flow in the inner exhaust pipe ensures that inject air flow is formed at the gap between the outer exhaust pipe and the inner exhaust pipe, and the inject air flow enables the escaped flue gas to enter the shell from a vent hole, then enter the gap between the outer exhaust pipe and the inner exhaust pipe, and is finally exhausted through a draught flue along with the flue gas in the inner exhaust pipe. The utility model has the advantages of high efficiency, energy saving and noise reduction.

Description

A kind of injection type smoke exhaust ventilator

Technical field

The utility model relates to a kind of injection type smoke exhaust ventilator, belongs to the kitchen appliance field.

Background technology

Each family utilizes smoke exhaust ventilator to come the oil smoke that produces in the cooking process is absorbed and is discharged into outdoorly, guarantees the environment clean hygiene in the kitchen.

Though the kind of the smoke exhaust ventilator on the market is a lot, as shown in Figure 1, as: side-absorption type smoke exhaust ventilator (a), lithographic plate formula smoke exhaust ventilator (b), arc smoke exhaust ventilator (c), these smoke exhaust ventilators only are in shape and install and have difference, and the structure of smoke exhaust ventilator itself and operation principle do not change, they are all by a general structure, all comprise a hollow housing, blast pipe, one or more electric fans are formed.In order to make oil pumping mechanism of qi smoke evacuation performance stronger, smoke exhaust ventilator also adopts high-power, dynamical impeller mostly, though the intensity of bleeding increases, but owing to flow very weak at the regional air far away from the inlet scoop, therefore still there is the problem that smog can not be exhausted fully under the big situation of oil smoke, and this large power high efficiency energy impeller power consumption is higher, has wasted the energy, also produces big noise simultaneously.

Summary of the invention

Because the gas itself that conventional smoke exhaust ventilator exhaust electric fan is discharged has certain kinetic energy, therefore according to the hydrodynamics jet theory, provide a kind of can the kinetic energy of discharging gas fully utilize a kind of energy-conservation, noise reduction, injection type smoke exhaust ventilator efficiently.

A kind of injection type smoke exhaust ventilator of the utility model comprises housing, electric fan, inside exhaust pipe, outer blast pipe; Described housing is the boring structure; Housing lower surface and upper surface have port A and port B, also have at least one passage on the housing; The edge of port A and port B is sealedly connected with inside exhaust pipe and outer blast pipe respectively; The inside exhaust pipe top is higher than the upper surface of housing; Described inside exhaust pipe is positioned at outer blast pipe inside, and the top of outer blast pipe is higher than the top of inside exhaust pipe; Electric fan is installed in the inside exhaust pipe.

When producing flue gas, by electric fan partial fume is discharged by inside exhaust pipe, the kinetic energy of the air-flow in the inside exhaust pipe makes the gap location between outer blast pipe and inside exhaust pipe form the injection air-flow, the injection air-flow makes the flue gas of escape be entered in the housing by passage, enter the gap location between outer blast pipe and inside exhaust pipe subsequently, together discharge with the flue gas in the inside exhaust pipe.

Advantage of the present utility model is:

1, the passage of the utility model smoke exhaust ventilator by around the smoke exhaust ventilator housing, having, and two-layer blast pipe is set on smoke exhaust ventilator, make between two-layer blast pipe and form jet, will exhaust by the flue gas that passage around the housing enters;

2, efficient, energy-conservation, the noise reduction of the utility model.

Description of drawings

Fig. 1 is existing smoke exhaust ventilator kind schematic diagram;

Fig. 2 looks generalized section for the utility model master;

Fig. 3 is a passage position schematic side view around the utility model middle shell;

Fig. 4 is a passage position elevational schematic view around the utility model middle shell;

Fig. 5 is the main schematic diagram of looking in passage position around the utility model middle shell;

Fig. 6 looks generalized section for the utility model reducing inside exhaust pipe structure master.

Among the figure:

The outer blast pipe 4-electric fan 101-port A 102-port B 103-passage of 1-housing 2-inside exhaust pipe 3-

The specific embodiment

Below in conjunction with accompanying drawing the utility model is elaborated.

A kind of injection type smoke exhaust ventilator of the utility model comprises housing 1, inside exhaust pipe 2, outer blast pipe 3, electric fan 4.As shown in Figure 2.Housing 1 is the boring structure, has port A101 and port B102 on housing 1 lower surface and the upper surface, port A101 and port B102 concentric.Also have passage 103 on the housing 1, passage 103 can be opened around housing 1 bottom, as shown in Figure 3, or opens in housing 1 side all around as Fig. 4, shown in Figure 5.Wherein, the edge of port A101 and port B is sealedly connected with inside exhaust pipe 2 and outer blast pipe 3 respectively.Inside exhaust pipe 2 tops are higher than the upper surface of housing 1.Described inside exhaust pipe 2 is positioned at outer blast pipe 3 inside, and the top of outer blast pipe 2 is higher than the top of inside exhaust pipe 3.

Inside exhaust pipe 2 inside are equipped with electric fan 4, produce air-flow by electric fan 4 in inside exhaust pipe 2, make partial fume enter into inside exhaust pipe 2 and discharge.The kinetic energy that produce air-flows in the inside exhaust pipe 2 make the gap location generation vacuum band of 4 of outer blast pipe 3 and inside exhaust pipes, form the injection air-flow thus, thereby make the gap location of 4 of outer blast pipe 3 and inside exhaust pipes produce air-flow simultaneously, reach the effect of airflow injection.Described electric fan 4 can be axial fan, centrifugal fan.When adopting the less electric fan 4 of horsepower, in the inside exhaust pipe 2 current rates a little less than, therefore, inside exhaust pipe 2 tops can be throat structure, as shown in Figure 6, thereby increase air-flow velocities in the inside exhaust pipe 2.

Partial fume is discharged by inside exhaust pipe 2, and some flue gas is escaped by housing 1 bottom.The kinetic energy of the air-flow in the inside exhaust pipe 2 makes the gap location of 2 of outer blast pipe 3 and inside exhaust pipes form the injection air-flow, the injection air-flow makes the flue gas of escape be entered in the housing 1 by passage 103, enter the gap location of 2 of outer blast pipe 3 and inside exhaust pipes subsequently, together discharge with the flue gas in the inside exhaust pipe 2, thereby improved the efficient that absorbs flue gas.

Claims

1. an injection type smoke exhaust ventilator comprises housing, electric fan, it is characterized in that: also comprise inside exhaust pipe, outer blast pipe; Described housing is the boring structure; Housing lower surface and upper surface have port A and port B, also have at least one passage on the housing; The edge of port A and port B is sealedly connected with inside exhaust pipe and outer blast pipe respectively; The inside exhaust pipe top is higher than the upper surface of housing; Described inside exhaust pipe is positioned at outer blast pipe inside, and the top of outer blast pipe is higher than the top of inside exhaust pipe; Electric fan is installed in the inside exhaust pipe.

2. a kind of according to claim 1 injection type smoke exhaust ventilator, it is characterized in that: described passage is arranged on the housing lower surface.

3. a kind of according to claim 1 injection type smoke exhaust ventilator, it is characterized in that: described passage is arranged on the housing side.

4. a kind of according to claim 1 injection type smoke exhaust ventilator is characterized in that: described electric fan is axial fan or centrifugal fan.

5. a kind of according to claim 1 injection type smoke exhaust ventilator is characterized in that: described inside exhaust pipe is terminal to be throat structure.

6. a kind of according to claim 1 injection type smoke exhaust ventilator is characterized in that: described port A and port B concentric.