1. A smoke evacuation apparatus, comprising:

the auxiliary smoke exhaust mechanism (2) is provided with a fan, an air inlet and a first exhaust port;

the first air pipe (4), the said first air outlet communicates with said first air pipe (4);

the three-way pipe fitting (3) is provided with an air inlet, a first air outlet and a second air outlet;

a valve device (5) adapted to control the first outlet and the second outlet to alternatively conduct;

the first air outlet is communicated with the air inlet, and the second air outlet is communicated with the first air pipe (4).

2. The smoke evacuation apparatus of claim 1, wherein said tee fitting (3) comprises a first pipe (31) and a second pipe (32) in communication, said first pipe (31) extending outwardly from a sidewall of said second pipe (32);

the air inlet and the first air outlet are positioned at two ends of the second pipeline (32), and the second air outlet is positioned at one end of the first pipeline (31).

3. The fume extractor according to claim 1, characterized in that said valve means (5) comprises a first valve (51) and a second valve (52);

the first valve (51) is used for controlling the opening and closing of the first air outlet;

the second valve (52) is configured to control the opening and closing of the second air outlet.

4. The fume extractor according to claim 1, characterized in that said valve means (5) comprise a common valve;

the common valve is configured to: the second air outlet is controlled to be closed when the first air outlet is controlled to be opened; and when the second air outlet is controlled to be opened, the first air outlet is controlled to be closed.

5. The smoke evacuation device of claim 4, wherein the common valve comprises a valve plate that can be rotated to alternatively open the first outlet and the second outlet.

6. A smoke exhaust apparatus according to any of the claims 3-5, characterized in that said smoke exhaust apparatus further comprises a controller, said controller being connected to said valve means (5).

7. The smoke exhaust device according to any one of claims 1 to 5, wherein the fan of the auxiliary smoke exhaust mechanism (2) is a centrifugal fan or an axial flow fan.

8. A smoke evacuation system, comprising:

a range hood (1) having a second exhaust port;

a fume extractor according to any one of claims 1 to 7;

wherein, the second gas vent with fume extractor's air intake intercommunication.

Background

In the prior art, the range hood is usually a single fan system, and the disadvantage is that the running air pressure is not very high.

Another range hood in the prior art is a double-fan system, wherein a first-stage fan is a fan of the range hood, and a second-stage fan is an auxiliary fan installed in series at the top of the range hood.

When the double-fan system operates under the working condition of large air quantity, the operation air quantity of the double-fan system is between the middle value of the maximum air quantity of the two fans, namely the maximum air quantity of the double-fan system is smaller than that of the single-fan system, so that the double-fan system does not have the single-fan system, the performance is good, and the air exhaust effect is poor.

Disclosure of Invention

The application provides a smoke exhaust device and a smoke exhaust method, which aim to solve the technical problem that a double-fan system in the prior art is poor in air exhaust effect.

This application first aspect provides a fume extractor, includes:

the auxiliary smoke exhaust mechanism is provided with a fan, an air inlet and a first exhaust port;

the first air pipe is communicated with the first exhaust port;

the three-way pipe fitting is provided with an air inlet, a first air outlet and a second air outlet;

the valve device is arranged to be suitable for controlling the first air outlet and the second air outlet to be alternatively communicated;

the first air outlet is communicated with the air inlet, and the second air outlet is communicated with the first air pipe.

In one possible design, the tee includes first and second tubing in communication, the first tubing extending outwardly from a sidewall of the second tubing;

the air inlet and the first air outlet are located at two ends of the second pipeline, and the second air outlet is located at one end of the first pipeline.

In one possible design, the valve arrangement comprises a first valve and a second valve;

the first valve is used for controlling the opening and closing of the first air outlet;

the second valve is arranged to control the second air outlet to open and close.

In another possible design, the valve arrangement includes a common valve;

the common valve is configured to: the second air outlet is controlled to be closed when the first air outlet is controlled to be opened; and when the second air outlet is controlled to be opened, the first air outlet is controlled to be closed.

In one possible design, the common valve comprises a valve plate which can be rotated in order to alternatively open the first outlet opening and the second outlet opening.

In one possible embodiment, the smoke evacuation device further comprises a controller, which is connected to the valve device.

In one possible design, the fan of the auxiliary smoke exhaust mechanism is a centrifugal fan or an axial flow fan.

This application second aspect provides a system of discharging fume, includes:

a range hood having a second exhaust port;

a fume extractor, said fume extractor being in communication with said fume extractor;

wherein, the second gas vent with fume extractor's air intake intercommunication.

The technical scheme provided by the application can achieve the following beneficial effects:

the first air outlet or the second air outlet is controlled to be communicated through the valve device, the independent operation of the smoke exhaust ventilator or the simultaneous operation of the smoke exhaust ventilator and the auxiliary smoke exhaust mechanism is realized, the smoke exhaust system can meet the requirements of large air quantity and high air pressure, and the technical problem of poor air exhaust effect of the double-fan system in the prior art is solved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application, as provided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a smoke exhaust device according to an embodiment of the present application;

FIG. 2 is a schematic structural diagram of another implementation of a tee.

Reference numerals:

1-a smoke exhaust ventilator;

2-auxiliary smoke exhaust mechanism;

3-a tee pipe fitting;

31-a first conduit;

32-a second conduit;

4-a first air duct;

5-a valve means;

51-a first valve;

52-second valve.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Detailed Description

For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.

It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be noted that the terms "upper", "lower", "left", "right", and the like used in the embodiments of the present application are described in terms of the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element via an intermediate element.

The range hood 1 is commonly provided with a single-fan system and a double-fan system. The double-fan system comprises a first-stage fan and a second-stage fan, the first-stage fan is a fan of the range hood 1, and the second-stage fan is an auxiliary fan which is installed on the top of the range hood 1 in series. Because the air quantity of the fan of the auxiliary smoke exhaust device is smaller than that of the fan of the range hood, according to the principle of serial connection of the fans, the maximum air quantity of the range hood of the double-fan system during operation is smaller than that of the range hood of the single-fan system during operation, so that the double-fan system does not have the single-fan system to exhaust air well, and the range hood of the double-fan system has poor air exhaust effect.

In order to solve the technical problem, an embodiment of the present application provides a smoke exhaust system, including a smoke exhaust ventilator 1 and a smoke exhaust device; the range hood 1 is installed above a kitchen range, comprises a fan, can rapidly pump away waste burned by the range and oil fume harmful to human bodies generated in the cooking process, and can be discharged out of a kitchen, reduce pollution and purify air, and has the safety guarantee effects of gas defense and explosion prevention, and the range hood 1 is provided with a second exhaust port; the smoke exhaust device is installed at the subsequent stage of the range hood 1 and is used for exhausting the oil smoke particles, gas and the like sucked by the range hood 1 outwards.

As shown in fig. 1, the smoke exhaust device comprises an auxiliary smoke exhaust mechanism 2, a first air pipe 4, a tee pipe fitting 3 and a valve device 5; the auxiliary smoke exhaust mechanism 2 is provided with a fan, an air inlet and a first exhaust port; the fan is used for sucking oil smoke in the tee pipe fitting 3 into the first air pipe 4 and exhausting the oil smoke to a flue, the air inlet is used for allowing the oil smoke to enter the auxiliary smoke exhaust mechanism 2, the first exhaust port is used for discharging the oil smoke in the auxiliary smoke exhaust mechanism 2, and the first exhaust port is communicated with the first air pipe 4; the three-way pipe fitting 3 is provided with an air inlet, a first air outlet and a second air outlet, wherein the air inlet is used for enabling oil smoke to enter the three-way pipe fitting 3, the first air outlet is used for enabling the oil smoke in the three-way pipe fitting 3 to be discharged and flow to the auxiliary smoke exhaust mechanism 2, the second air outlet is used for enabling the oil smoke in the three-way pipe fitting 3 to be discharged and flow to the first air pipe 4, the second air outlet is communicated with the air inlet of the smoke exhaust device, and the valve device 5 is set to be suitable for controlling the first air outlet and the second air outlet to be alternatively communicated; wherein, first air outlet and air inlet intercommunication, second air outlet and first tuber pipe 4 intercommunication control first air outlet or second air outlet through valve device 5 and switch on, realize smoke ventilator 1 alone operation or smoke ventilator 1 and supplementary mechanism 2 simultaneous operation of discharging fume, and then realize that the system of discharging fume satisfies the big and high performance of the amount of wind and wind pressure.

As shown in fig. 1, in the embodiment of the present application, the valve device 5 controls the conduction of the second air outlet, and the first air outlet is closed, so that the range hood 1 operates alone, and the single fan operation is realized, so that the second air outlet is communicated with the air inlet, the second air outlet, and the first air pipe 4, at this time, the air pressure of the smoke exhaust system is smaller than that of the smoke exhaust system when the first air outlet is conducted, but the air volume of the smoke exhaust system is larger than that of the smoke exhaust system when the first air outlet is conducted, and further, the large air volume operation of the smoke exhaust system is realized; the first air outlet is controlled to be communicated through the valve device 5, the second air outlet is closed, the range hood 1 and the auxiliary smoke exhaust fan work together, the double-fan operation is realized, the second air outlet and the air inlet are enabled to be communicated with each other, the first air outlet, the air inlet, the first air outlet and the first air pipe 4 are enabled to be communicated, the air quantity of the smoke exhaust system is smaller than that of the smoke exhaust system when the second air outlet is communicated, the air pressure of the smoke exhaust system is larger than that of the smoke exhaust system when the second air outlet is communicated, and then the highest air pressure operation of the smoke exhaust system is realized. According to actual requirements, the operation mode of large air quantity and low air pressure (the range hood 1 works alone) of the smoke exhaust system or the operation mode of small air quantity and high air pressure (the range hood 1 and the smoke exhaust device work together) can be selected, and the technical problem of poor exhaust effect of the double-fan system in the prior art is solved.

As shown in FIG. 1, in one possible design, tee 3 includes a first tube 31 and a second tube 32 in communication, with first tube 31 extending outwardly from a sidewall of second tube 32; the first pipeline 31 extends towards the first air duct 4, and the second pipeline 32 extends towards the auxiliary smoke exhaust mechanism 2; the air inlet and the first air outlet are located at two ends of the second pipeline 32, and the second air outlet is located at one end of the first pipeline 31 connected with the first air pipe 4. In this application embodiment, install tee bend pipe fitting 3 on double fan system smoke ventilator 1, the one end and the second pipeline 32 intercommunication of the first pipeline 31 of tee bend pipe fitting 3, the other end and first tuber pipe 4 intercommunication, the one end and the second gas vent intercommunication of smoke ventilator 1 of second pipeline 32, the other end and supplementary mechanism 2 intercommunication of discharging fume, valve device 5 control first pipeline 31 or second pipeline 32 switch on, change the flow direction of oil smoke, realize two mode of operation of smoke ventilator 1 alone motion or smoke ventilator 1 and supplementary mechanism 2 joint operation of discharging fume of system of discharging fume.

As shown in fig. 2, the first pipeline 31 and the second pipeline 32 may be perpendicular to each other, or the first pipeline 31 and the second pipeline 32 may intersect at other angles.

As shown in fig. 1, in one possible design, the valve arrangement 5 comprises a first valve 51 and a second valve 52; a first valve 51 configured to control opening and closing of the first outlet; and a second valve 52 provided to control opening and closing of the second outlet. In this application embodiment, when first valve 51 controlled the first air outlet and switched on, then second valve 52 controlled the second air outlet and closed, made smoke ventilator 1 and supplementary mechanism 2 of discharging fume operate jointly to make the system of discharging fume be in the high wind pressure operation, when second valve 52 controlled the second air outlet and switched on, then first valve 51 controlled the first air outlet and closed, the oil smoke does not pass through supplementary mechanism 2 of discharging fume, makes smoke ventilator 1 independent motion, thereby makes the system of discharging fume be in the operation of the big amount of wind.

Further, the first valve 51 is not limited to be installed at the first air outlet, and may be installed at another position of the second pipeline 32, so as not to block the communication between the air inlet and the second air outlet of the first pipeline 31, and to control the first air outlet to be closed; the second valve 52 is not limited to be installed at the second outlet, and may be installed at another position of the first pipeline 31, and may be configured to control the second outlet to be closed.

In another possible design, the valve means 5 comprise a common valve; the common valve is configured to: and the second air outlet is controlled to be closed when the first air outlet is controlled to be opened, and the first air outlet is controlled to be closed when the second air outlet is controlled to be opened. In this embodiment, the first air outlet and the second air outlet are controlled by a common valve, so as to save the manufacturing cost, wherein the common valve can be installed at the communication position of the first pipeline 31 and the second pipeline 32.

Further, public valve includes the valve block, and the valve block can rotate to first air outlet and second air outlet are opened to the alternative, when the rotatory shutoff first pipeline 31 of control valve block, make the second air outlet close, first air outlet switches on, when the rotatory shutoff second pipeline 32 of control valve block, make first air outlet close, the second air outlet switches on.

In one possible design, as shown in fig. 1, the fume extractor further comprises a controller, which is connected to the valve device 5. In this embodiment, the controller controls the first valve 51 and the second valve 52 to control the opening and closing of the first air outlet and the second air outlet, or controls the common valve to control the opening and closing of the first air outlet and the second air outlet.

In one possible design, the fan of the auxiliary smoke evacuation mechanism 2 may be a centrifugal fan or an axial fan. Axial flow fans are generally provided with shallow covers, and have large air quantity and small air pressure; the centrifugal fan has large air pressure.

Of course, other types of fans can be used as the fan of the auxiliary smoke exhaust mechanism 2.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.