TWM498292U - Exhaust device - Google Patents

Description

Exhaust

This creation relates to an exhaust device, especially one that can effectively prevent the leakage of soot pollutants for use in factories, laboratories and kitchens.

The "traditional range hood" is not much different from the top suction hood used in the workplace. The flange of such a range hood may be a flat, downwardly arched or box-shaped shape, while the suction port may be round, square, rectangular or elongated. When such a range hood is inhaled, air and contaminants will flow from under the rim to the underside of the hood, into the suction port, and then through the conduit to the outside. Among them, the air flow rate near the position of the suction port is large, and the air flow rate away from the position of the suction port will rapidly decrease as the distance from the suction port increases. Therefore, within a short distance below the suction port, the speed of the air upwards has become small, so that the upward suction force is insufficient, and it is highly susceptible to disturbance airflow from the movement of people, fans or air-conditioning operations. Allows soot or contaminants to escape as the flow of disturbed air flows.

When the above-mentioned range hood is used in an environment that generates high-temperature gas, although a large buoyancy effect is generated due to the high temperature of the fire, the velocity of the ascending airflow is increased, but the turbulent diffusion and expansion effect due to high temperature It will make the soot pollutants easily escape from the front, rear and side of the range hood. Therefore, the general range hood often increases the suction to increase the amount of inhalation. However, this method not only increases noise, wastes energy, but also completely eliminates it. The phenomenon of leakage.

In view of the above problems, a common improvement method is as shown in Fig. 6, in which the baffles are respectively added to the left and right sides and the rear of the range hood a. However, in actual use, the boundary layer of the gas stream is easily separated at the leading edge of the two side plates b to generate a large return bubble c, which will roll the soot pollutants near the front edge of the two side plates b and diffuse through the molecules. It leaks out with turbulent flow, or is exposed to the external environment due to the influence of environmental disturbances. At the junction of the flange d of the range hood a and the side panel b, due to the three-dimensional effect, complex three-dimensional eddy currents and strong turbulence will be generated, and the contaminants will be rolled to the flange d of the range hood a and Leakage at the junction of the side panels b. Therefore, simply adding the side plates b to the left and right sides of the range hood a can not completely achieve the effect of preventing leakage.

In view of this, in order to provide a structure different from the conventional technology and to improve the above-mentioned shortcomings, the creator has accumulated many years of experience and continuous research and development improvements, and this creation has not been produced.

One of the purposes of the present invention is to provide a left and right deflecting plate respectively at the front ends of the left and right vertical plates, and left and right top plates respectively at the upper portions of the left and right deflecting plates, and to inhale The bottom surface of the cover is provided with exhausting devices for the left and right blowing grooves, which can solve the problem of three-dimensional eddy current and strong turbulence at the boundary between the flange and the side plate of the conventional range hood, and can keep the vortex away from the exhaust device. The opening at the front end to prevent leakage of contaminants.

For the purpose of the above creation, the exhaust device provided by the present invention comprises a suction hood, a left vertical plate, a right vertical plate, a first guiding portion, a second guiding portion, a left top plate and A right top plate. The bottom surface of the suction hood is provided with at least one air suction port, and the air suction port is connected to the air suction device for upward pumping; the left and right vertical plates are respectively coupled to the left side surface and the right side surface of the air suction cover, the suction hood, An accommodating space is formed between the left vertical plate and the right vertical plate; wherein the suction hood, the left vertical plate and the right vertical plate are defined as a front end or one side of the user, and are defined in a reverse direction and away from one side or one side of the user For the rear end, when the user faces the suction hood, the left vertical plate and the right vertical plate, the left side and the right side are defined, and the main technical feature is that the first vertical guiding portion is arranged on the left vertical plate. At the front end of the right side surface, the left top plate is disposed between the first guiding portion and the suction port, the top edge of the left top plate is adjacent to the left side of the bottom surface of the suction hood, and the left side of the left top plate is adjacent to the left side of the left side plate of the left vertical plate; The long vertical guiding portion is disposed at a front end of the left side surface of the right vertical plate, the right top plate is disposed between the second guiding portion and the air suction port, and the top edge of the right top plate is adjacent to the right side of the bottom surface of the suction hood. The right side of the right top panel is adjacent to the left side of the right vertical panel.

In practice, the creation further includes a first vertical plate and a second vertical plate. The first vertical plate is bent to the left by the front end of the left vertical plate, and the second vertical plate is bent to the right by the front end of the right vertical plate. .

In implementation, the left top plate and the right top plate are symmetrical to each other, and the end of the left top plate extending to the right side does not exceed the left side edge of the air suction port, and the end of the right top plate extending to the left side does not exceed the right edge of the air suction port.

When implemented, the left top plate and the right top plate are respectively inverted triangular plates.

During the implementation, the suction port is in the form of a strip, and the bottom surface of the suction hood is provided with a left-hand blowing air tank and a right-blowing air tank, respectively, which are blown downwards respectively, and the left blowing air tank and the right blowing air tank are Arranged in a straight line, the left and right blowing slots are parallel to the suction port, and the left blowing groove is parallel to the top edge of the left top plate and is located at the rear end of the top edge. The right blowing groove is parallel to the top edge of the right top plate and is located at the top edge. After the end.

In implementation, the creation further includes a rear plate, and the left and right ends of the rear plate are respectively connected to the rear end of the left vertical plate and the rear end of the right vertical plate.

In order to facilitate a deeper understanding of this creation, it is detailed later:

1‧‧‧Exhaust device

2‧‧‧ suction hood

21‧‧‧Exhaust port

22‧‧‧Exhaust port

23‧‧‧ Left blow tank

24‧‧‧ right blow tank

25‧‧‧ accommodating space

3‧‧‧Left vertical board

31‧‧‧First Guidance

32‧‧‧Left top board

321, 421‧‧‧ top side

322‧‧‧left side

33‧‧‧First Board

4‧‧‧right board

41‧‧‧Second guidance

42‧‧‧right top plate

422‧‧‧ right side

43‧‧‧Second board

5‧‧‧ Back panel

Figure 1 is a perspective view of the first embodiment of the present invention.

Figure 2 is a top plan view of the first embodiment of the present invention.

Figure 3 is a front elevational view of the first embodiment of the present invention.

Fig. 4 is a view showing the state of use of the first embodiment of the present invention.

Figure 5 is a perspective view of the second embodiment of the present invention.

Figure 6 is a diagram showing the state of use of a conventional range hood.

Please refer to the first embodiment of the present invention, which includes a suction hood 2, a left vertical plate 3, a first guiding portion 31, a left top plate 32, A right vertical plate 4, a second guiding portion 41, a right top plate 42 and a rear plate 5. Wherein, the suction hood 2, the left vertical plate 3 and the right vertical plate 4 are defined as a front end adjacent to one side or one side of the user, and are defined as a rear end in a reverse direction and away from one side or one side of the user, and at the same time, the user faces the suction hood 2. When the left vertical plate 3 and the right vertical plate 4 are defined, the left side and the right side are defined.

The bottom surface of the suction hood 2 is provided with an air suction port 21 having an opening downward, and the air suction port 21 is substantially elongated, and the elongated air suction port 21 is parallel to the rear end surface of the air suction cover 2. In practice, the suction port 21 at the bottom of the suction hood 2 may also be set to one or two or more, and is circular, square or rectangular. The top end of the suction hood 2 has an exhaust port 22 which is connected to an air suction means such as a blower to draw upward from the air suction port 21 and discharge it to the outside when the air suction device is in operation. Further, the bottom surface of the air suction hood 2 is provided with a left-shaped air blowing groove 23 and a right air blowing groove 24, respectively, and the left air blowing groove 23 and the right air blowing groove 24 are arranged at a linear interval, and the left and right blowing are performed. The air slots (23, 24) are parallel to the air suction port 21, and the left and right air blowing slots (23, 24) Connect an exhaust device such as a cross flow fan to blow down.

The left vertical plate 3, the right vertical plate 4 and the rear plate 5 are respectively a rectangular plate, and the left vertical plate 3 and the right vertical plate 4 are respectively coupled to the left side and the right side of the suction hood 2, and the left side of the rear plate 5, The right end is connected to the rear end of the left vertical plate 3 and the rear end of the right vertical plate 4, respectively, and an accommodating space 25 is formed between the suction hood 2, the left vertical plate 3, the right vertical plate 4 and the rear plate 5, and the accommodating space is formed. An opening is formed before 25 .

The first guiding portion 31 and the second guiding portion 41 are respectively elongated and straight, and the left side surface of the first guiding portion 31 is attached to the front end of the right side surface of the left vertical plate 3, and the right side of the second guiding portion 41 The surface is attached to the front end of the left side of the right vertical plate 4, and the horizontal sections of the first and second guiding portions (31, 41) are respectively semi-circular. When implemented, the first and second guiding portions (31) The horizontal sections of 41) may also be curved to create a guiding airflow.

The left top plate 32 and the right top plate 42 are respectively an inverted triangular plate, and the left top plate 32 and the right top plate 42 are symmetric with each other on both sides of the bottom surface of the suction hood 2, and the left top plate 32 is disposed between the first guiding portion 31 and the suction port 21. The right top plate 42 is disposed between the second guiding portion 41 and the air suction port 21. Specifically, the top edge 321 of the left top plate 32 is adjacent to the left side of the bottom surface of the suction hood 2, and the left side 322 of the left top plate 32 is adjacent to the left side. The right side surface of the left vertical plate 3 is adjacent to the right side of the bottom surface of the suction hood 2, and the right side 422 of the right top plate 42 is adjacent to the left side of the right vertical plate 4 to the right. The top edge 321 of the left top plate 32 is parallel to the left blowing groove 23 and is located at the front end of the left blowing groove 23. The top edge 421 of the right top plate 42 is parallel to the right blowing groove 24 and is located at the front end of the right blowing groove 24.

When the left top plate 32 extends to the right in a direction away from the left vertical plate 3, and the right top plate 42 extends leftward in a direction away from the right vertical plate 4, the end of the left top plate 32 extending in the right direction does not exceed the left edge of the suction port 21. The one end of the right top plate 42 extending in the left direction does not exceed the right edge of the suction port 21. When implemented, the left top panel 32 and the right top panel 42 may also be curved, rectangular or other shapes but also have A plate body with a flow guiding function.

Thereby, as shown in FIG. 4, the airflow passes through the state of the left top plate 32 and the right top plate 42, respectively. Wherein, when the airflow enters the accommodating space 25 from the boundary between the suction hood 2 and the left and right vertical plates (3, 4), respectively, due to the guidance of the left top plate 32 and the right top plate 42, originally in Fig. 6 The backflow bubbles formed by the three-dimensional effect disappear, and the airflow flows along the left top plate 32 and the right top plate 42, respectively, and finally exits at the rear end edges of the left top plate 32 and the right top plate 42, and respectively form a vortex (C, C'), this vortex (C, C') is far from the front edge below the suction hood 2.

Since the left and right blowing grooves (23, 24) are respectively located at the rear ends of the left and right top plates (32, 42), the vortex (C, C) formed by the left end plate 32 and the right top plate 42 at the rear end edges respectively. ') will be guided by the air blown downward by the left and right blowing slots (23, 24), so as to enter the suction port 21 to avoid soot pollutants through the suction hood 2 and the left and right vertical plates (3, 4) The junction is leaking outward. Further, due to the guidance of the first guiding portion 31 and the second guiding portion 41, the air blown downward by the left and right blowing grooves (23, 24) can more effectively achieve the guiding effect.

Referring to FIG. 5, it is a second embodiment of the venting device 1 which is different from the first embodiment in that a rectangular plate is bent from the front end of the left vertical plate 3 to the left. The first vertical plate 33 is bent from the front end of the right vertical plate 4 to the right to extend a rectangular plate-shaped second vertical plate 43 so as to smoothly guide the airflow into the accommodating space 25 below the suction hood 2.

Therefore, this creation has the following advantages:

1. The creation department sets the first and second guiding portions respectively at the front ends of the left and right vertical plates, and respectively sets the left and right top plates on both sides of the bottom surface of the suction hood, thereby effectively eliminating the air by the exhaust device. The three-dimensional eddy current and strong turbulence generated at the junction of the flange and the side plate prevent the pollutant from leaking outward from the left and right sides of the front end of the suction hood.

2. The creation system is provided with first and second guiding portions respectively at the front ends of the left and right vertical plates, left and right top plates on both sides of the bottom surface of the suction hood, and left and right sides on the bottom surface of the suction hood The blowing groove, therefore, can generate a vortex away from the opening end of the exhaust device and guide into the suction port, thereby effectively preventing the soot pollutant from leaking outward from the original entry path.

In summary, according to the above disclosure, the creation can achieve the intended purpose, and provide an effective way to reduce the dissipation of soot pollutants, especially to prevent the pollutants from being left and right sides of the front end of the suction hood. The exhaust device that leaks out of the corner is of great value for industrial use, and proposes a new type of patent application according to law.

1‧‧‧Exhaust device

2‧‧‧ suction hood

21‧‧‧Exhaust port

22‧‧‧Exhaust port

23‧‧‧ Left blow tank

24‧‧‧ right blow tank

25‧‧‧ accommodating space

3‧‧‧Left vertical board

31‧‧‧First Guidance

32‧‧‧Left top board

321, 421‧‧‧ top side

322‧‧‧left side

4‧‧‧right board

41‧‧‧Second guidance

42‧‧‧right top plate

422‧‧‧ right side

5‧‧‧ Back panel

Claims (8)

An exhausting device includes a suction hood, a left vertical plate and a right vertical plate, wherein the bottom surface of the suction hood is provided with at least one air suction port, and the air suction port is connected to an air suction device for pumping upward; The left and right vertical plates are respectively coupled to the left side surface and the right side surface of the suction hood, and an accommodating space is formed between the suction hood, the left vertical plate and the right vertical plate; wherein the suction hood and the left vertical The side plate or the right vertical plate is defined as a front end adjacent to one side or one side of the user, and is defined as a rear end in a reverse direction and away from one side or one side of the user, and is defined when the user faces the suction hood, the left vertical plate and the right vertical plate. The left side and the right side are characterized in that: a front end of the right side of the left vertical plate is provided with a long vertical guiding portion, and a left top plate is disposed between the first guiding portion and the air discharging port, the left top plate The top edge is adjacent to the left side of the bottom surface of the suction hood, the left side of the left top plate is adjacent to the left side of the right side of the left vertical plate; and the front end of the left side of the right vertical plate is provided with a long and straight second guide a right top plate is disposed between the second guiding portion and the air suction port, and the right top is Upwardly adjacent the top edge of the right side of the bottom surface of the hood, the adjacent surfaces of the right and left side of the right vertical plate to the right edge of the right side of the top plate. The venting device of claim 1, further comprising a first vertical plate and a second vertical plate, the first vertical plate extending from the front end of the left vertical plate to the left, the second The vertical plate is bent to the right by the front end of the right vertical plate. The venting device of claim 1, wherein the left top plate and the right top plate are symmetrical to each other, and an end of the left top plate extending in a right direction does not exceed a left edge of the air suction port, and the right top plate is to the left side. The end of the direction extension does not exceed the right edge of the suction port. The exhaust device of claim 1, wherein the left top plate is an inverted triangular plate. The venting apparatus of claim 1, wherein the right top plate is an inverted triangular plate. The venting device of claim 1, wherein the bottom surface of the suction hood is provided with a left blowing air tank and a right blowing air tank, respectively, which are blown downwardly, respectively. The blowing groove and the right blowing groove are arranged at a linear interval, and the left blowing groove is parallel to the top edge of the left top plate and is located at the rear end of the top edge, and the right blowing groove is parallel to the top edge of the right top plate And located at the back end of the top edge. The exhaust device according to claim 6, wherein the air suction port is elongated, and the left and right air blowing grooves are parallel to the air suction port. The venting device of claim 1, further comprising a rear plate, the left and right ends of the rear plate being respectively connected to the rear end of the left vertical plate and the rear end of the right vertical plate.