TWI618894B - Dual back absorption type range hood - Google Patents

Abstract

A double-back suction-type range hood having a wind collecting box, the upper half of the front end face of the wind collecting box has at least one first suction port extending laterally and in a narrow shape, and the lower half of the front end face of the wind collecting box has a lateral direction and At least one second air suction port extending in a narrow shape, at least one first air suction port is parallel to at least one second air suction port, and at least one first air suction port is connected to at least one second air suction port to at least one air suction device, and at least one When the air suction device is pumping, the total gas flow rate through the at least one second air suction port at the same time is greater than the total gas flow rate through the at least one first air suction port. Thereby, after extracting most of the soot at the at least one second suction port, a small portion of the upwardly flowing soot is extracted by at least one first air suction port to achieve the effect of completely eliminating the oil smoke.

Description

Double back suction range hood

The invention relates to a double back suction type range hood, in particular to a method which can effectively remove soot for use in factories, laboratories and kitchens.

In order to improve the problem of poor exhaust efficiency of the conventional exhaust hood, the inventors have developed a range hood having a "air curtain" using the principle of gas dynamics to overcome the above problems. However, the range hood that can produce a two-dimensional air curtain must be equipped with a blowing and exhausting device at the same time, which is quite troublesome in replacement or installation work, and relatively increases the equipment and labor costs.

Based on the above problems, the inventors further improved another type of range hood, the structure of which mainly includes a suction hood, a left vertical plate and a right vertical plate, wherein the left and right vertical plates are respectively coupled to the suction hood The suction hood is a substantially rectangular casing, and the inside of the suction hood is provided with a collecting box, and the bottom of the collecting box is provided with a narrow suction port for pumping upward.

In actual use, the above structure can effectively eliminate soot. However, since the narrow suction port of the structure is located on the bottom surface of the wind collecting box, it is necessary to prevent the lateral disturbance in the process of extracting the rising soot in the narrow suction port by the long blocking action of the left vertical plate and the right vertical plate. The effect of the airflow to achieve the desired exhaust effect. However, when the long left vertical plate and the right vertical plate are respectively combined under the left side surface and the right side surface of the suction hood, the overall feeling is more oppressive.

In view of the above, in order to provide a structure different from the conventional technology and to improve the above disadvantages, the inventors have accumulated many years of experience and continuous development and improvement, and the present invention has been produced.

SUMMARY OF THE INVENTION One object of the present invention is to provide a suction port extending in a lateral direction and a narrow shape in the upper half and the lower half of the front end face of the windbox, and the total gas flow rate through the lower suction port at the same time. The double-back suction-type range hood is larger than the total gas flow rate through the upper suction port, which can solve the problem that the overall feeling of the conventional range hood is more oppressive, and can provide another structure for effectively eliminating the oil smoke, and let the oil exhaust smoke The overall configuration of the machine is more concise.

An object of the present invention is to provide a double-back suction type range hood, which is respectively positioned on the front end surface of two narrow suction ports by two cover plates which can be moved up and down, and the upper cover plate has another narrow length. The structure of the suction port can move the position of the cover according to the user's choice, and the elasticity is suitable for the smoke removal of the cooking utensils of different heights.

In order to achieve the above object, the double back suction type range hood of the present invention comprises a wind collecting box, and the wind collecting box is connected with at least one air extracting device, wherein the wind collecting box has a front end surface and a reverse front end surface. a rear end face, the upper half of the front end face of the wind collecting box has at least one first air suction port extending transversely and in a narrow shape, and the lower half of the front end face of the wind collecting box has at least one second air suction port extending transversely and in a narrow shape. The at least one first air suction port is parallel to the at least one second air suction port, the at least one first air suction port is connected to the at least one second air suction port and the at least one air suction device is connected, and at least one air suction device is pumped, at least one time is passed at the same time. The total gas flow rate of the two suction ports is greater than the total gas flow rate through the at least one first suction port.

In the implementation, the air collection box has an accommodation space therein, and the accommodation space is connected to the air suction device, the at least one first air suction port and the at least one second air suction port, and the air suction device is connected above the air collection box.

In implementation, the present invention further includes a left vertical plate and a right vertical plate, the left vertical plate is coupled to the lower side of the horizontal top and extends downward from the left side of the left side; the right vertical plate is coupled to the lower side of the horizontal top. It extends downward from the bottom of the right side.

In operation, the bottom surface of the horizontal top of the windbox is further provided with at least one air blowing port extending in a narrow shape, at least one air blowing port is located in front of the front end surface of the upright portion, and at least one air blowing port is parallel to at least one first air extracting port and At least one second suction port.

In implementation, the present invention further includes a second cover plate that is movably positioned on the front end surface of the at least one second suction port in an upwardly movable manner.

In one embodiment, the present invention further includes a first cover plate, wherein the first cover plate is movably positioned on the front end surface of the at least one first suction port in an upwardly and downwardly movable manner, and the first cover plate is provided on the surface of the first cover plate. The at least one third air suction port extending in a narrow shape and the at least one third air suction port is connected to the at least one first air suction port.

In implementation, the present invention further includes a connecting member, and the upper cover and the lower cover are respectively connected to the first cover and the second cover for simultaneously moving the first cover and the second cover.

In order to further understand the present invention, the specific embodiments of the present invention and the effects achieved thereby are described in detail below with reference to the drawings and drawings.

1‧‧‧Double-back suction range hood

2‧‧‧Wind box

21‧‧‧ horizontal top

211‧‧‧Blowing port

212‧‧‧Left vertical board

213‧‧‧ Left curved guide

214‧‧‧right board

215‧‧‧Right curved guide

216‧‧‧left roof

217‧‧‧right top plate

22‧‧‧Upright Department

221‧‧‧First pumping port

222‧‧‧second pumping port

223‧‧‧First rail

224‧‧‧Second rail

225‧‧‧ oil tank

23‧‧‧ accommodation space

24‧‧‧Exhaust port

3‧‧‧Exhaust device

41‧‧‧ third pumping port

4‧‧‧First cover

5‧‧‧second cover

6‧‧‧Connecting parts

9‧‧‧Boiler

Fig. 1 is a perspective view showing the appearance of a first embodiment of the present invention.

Figure 2 is a side cross-sectional view showing a first embodiment of the present invention.

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

Figure 4 shows the different pressure losses caused by the same fluid flow through different through-hole areas. The graph.

Fig. 5 is a view showing the state of use of the first embodiment of the present invention.

6 and 7 are front views of another embodiment of the first suction port of the first embodiment of the present invention.

Figure 8 is a perspective view of a second embodiment of the present invention.

Figures 9 and 10 are diagrams showing the state of use of the second embodiment of the present invention.

Figure 11 is a perspective view showing the appearance of a third embodiment of the present invention.

The double-back suction-type range hood of the present invention is provided with at least one first suction port and at least one second suction port extending transversely and in a narrow shape in the upper half and the lower half of the front end surface of the wind turbine box, wherein The at least one first air suction port is parallel to the at least one second air suction port, and the at least one first air suction port is connected to the at least one second air suction port to connect at least one air suction device. When at least one of the air suction devices is pumping, the total gas flow rate through the at least one second air suction port at the same time is greater than the total gas flow rate through the at least one first air suction port. After extracting a large portion of the soot at the at least one second suction port, the at least one first suction port completely removes a portion of the upwardly flowing soot.

Referring to Figures 1 to 3, which is a first embodiment of the double-back suction range hood 1 of the present invention, it comprises a wind collecting box 2 and an air extracting device 3. In the implementation, the left side and the right side of the wind collecting box 2 are defined by the relative position of the user facing the wind collecting box 2, and the front side of the wind collecting box 2 is defined as a front end surface, and is opposite to the collecting wind. The front end face of the case 2 and one side away from the user are defined as a rear end face.

The windbox 2 includes a horizontal top portion 21 and an upright portion 22 in an inverted L configuration, wherein the interior of the horizontal top portion 21 and the upright portion 22 has a receiving space 23. The top surface of the horizontal top portion 21 is provided with an exhaust port 24, and a blower is disposed in the exhaust port 24, and the blower is used as an air extracting device. 3. The upper half of the front end portion of the upright portion 22 has a plurality of circular holes extending in a laterally and narrowly spaced interval, and the circular hole serves as a first air suction port 221; the lower half of the front end portion of the upright portion 22 has a lateral and elongated shape. One of the elongated holes is used as the second suction port 222. The plurality of first air suction ports 221 are parallel to the second air suction port 222, and the first air suction port 221 and the second air suction port 222 communicate with each other through the accommodating space 23 of the wind collecting box 2 and the air extracting device 3. In addition, the bottom of the upright portion 22 has an oil groove 225, and the oil groove 225 communicates with the accommodating space 23 for accommodating waste oil.

The through hole area of the second suction port 222 is larger than the total through hole area of the plurality of first suction ports 221 . Generally, since the exhaust port 24 of the wind collecting box 2 is located at the top surface of the horizontal top portion 21, and the plurality of first air extracting ports 221 are close to the exhaust port 21, the second air extracting port 222 is away from the exhaust port 24, when pumping When the device 3 is in operation, the total gas flow rate through the second suction port 222 at the same time may be less than the total gas flow rate through the at least one first suction port 221 . However, since the through hole area of the second suction port 222 of the present invention is larger than the total through hole area of the plurality of first suction ports 221, based on the theory of fluid mechanics as shown in FIG. 4, the same fluid flow passes through different passages. When the hole area is different, the total gas flow rate passing through the second suction port 222 at the same time is greater than the total gas flow rate passing through the at least one first suction port 221 due to the difference in pressure loss.

Thereby, as shown in FIG. 5, when the user uses a boiler 9 and generates soot, the operation of the air extracting device 3, that is, the long strip-shaped second air extracting port 222 having a large pumping amount is extracted. The soot is completely removed by a plurality of first suction ports 221, and is exhausted by the exhaust port 24.

In the implementation, the first air suction port 221 may also be a square, rectangular or the like having different geometric shapes as shown in FIGS. The second air suction port 222 can also be a circular hole, a square hole or a rectangular hole or the like having different geometric shapes, and the plurality of second air suction ports 222 are Arranged in a laterally and narrowly spaced interval. The air extracting device 3 can also be provided with two, and respectively connected to the at least one first air extracting port 221 and the at least one second air extracting port 222 to pass the at least one second air extracting port at the same time by the control of different air pumping amounts. The total gas flow rate of 222 is greater than the total gas flow rate through at least one first extraction port 221 .

Referring to FIGS. 8-10, which is a second embodiment of the double-back suction range hood 1 of the present invention, which is different from the first embodiment in that the present invention further includes a first cover 4, A second cover plate 5 and a connecting member 6 are respectively disposed on the two sides of the plurality of first air suction ports 221 of the front end surface of the upright portion 22 of the wind collecting box 2, respectively, and a first guiding rail 223 is respectively disposed on the two sides of the second air extracting port 222 A second guide rail 224 is disposed, so that the first cover plate 4 is movably positioned on the front end surface of the at least one first air suction port 221 in an upwardly and downwardly movable manner, and the second cover plate 5 is movable up and down. The mode activity is positioned on the front end surface of the at least one second air suction port 22.

In addition, at least one third air suction port 41 extending in a narrow shape is disposed on the surface of the first cover plate 4, and the third air suction port 41 is a hole having different geometric shapes such as a circular hole, a square hole or a rectangular hole. When the first cover 4 covers the front end surface of the at least one first air suction port 221, the at least one third air suction port 41 communicates with the at least one first air suction port 221, and the total gas passing through the second air suction port 222 at the same time. The flow rate is greater than the total gas flow rate through the at least one first suction port 221 and the at least one third suction port 41. The upper and lower ends of the connecting member 6 are respectively connected to the first cover 4 and the second cover 5 to simultaneously move the first cover 4 and the second cover 5.

Thereby, when the first cover 4 covers the front end surface of the at least one first air suction port 221, and the second air suction port 222 is in an open state, the second air suction port 222 can extract most of the oil smoke, and then At least one third air suction port 41 completely removes a portion of the upwardly flowing soot; and when the second cover plate 5 covers the front end surface of the second air suction port 222, and at least one first air suction port 221 is opened. In the state of being placed, it can be used in the cooking of high pots such as steamers to directly extract the fumes generated by the higher boilers.

Please refer to FIG. 11 , which is a third embodiment of the double-back suction range hood 1 of the present invention, which is different from the first embodiment and the second embodiment in that the horizontal top of the wind collecting box 2 is The bottom surface of the bottom surface 21 is provided with at least one air blowing port 211 extending in a narrow shape, at least one air blowing port 211 is located in front of the front end surface of the upright portion 22, and at least one air blowing port 221 is parallel to at least one first air extracting port 211 and at least one second pumping port. The gas port 222 is configured to form a downwardly blowing air stream to prevent a small amount of soot from escaping outside the front end face of the wind box 2 . A left vertical plate 212 is coupled to the lower left side of the horizontal top portion 21 such that the left vertical plate 212 extends downward from the lower side of the left side surface, and the right side edge of the left vertical plate 212 is coupled with a left curved guiding portion 213; and the horizontal top portion 21 A right vertical plate 214 is coupled to the lower side of the right side surface, and the right vertical plate 214 extends downward from the lower side of the right side surface. The left side edge of the right vertical plate 214 is combined with a right curved guiding portion 215 to generate left and right sides of the wind collecting box 2. The airflow blockage function allows the air at the front end and the bottom of the wind collecting box 2 to smoothly enter to form an effect of qi. In addition, one side of the bottom surface of the horizontal top portion 21 is respectively provided with an inverted triangular left top plate 216 and an inverted triangular right top plate 217, and the left top plate 216 is located between the left curved guiding portion 213 and the suction port 24, and the right top plate 217 Located between the right curved guide portion 215 and the air suction port 24, specifically, the top edge of the left top plate 216 is upwardly adjacent to the left side of the bottom surface of the horizontal top portion 21, and the left side edge of the left top plate 216 is adjacent to the left side of the left vertical plate 212 to the left. The top edge of the right top plate 217 is upwardly adjacent to the right side of the bottom surface of the horizontal top portion 21, and the right side edge of the right top plate 217 is adjacent to the left side of the right vertical plate 214 to the right. The top edge of the left top plate 216 and the top edge of the right top plate 217 are respectively parallel to the air blowing port 221 and are located at the front end of the air blowing port 221 to avoid soot pollutants passing through the horizontal top portion 21 and the left and right vertical plates (212, 214). The junction leaked outward.

Based on the structure of the first embodiment described above, when the suction groove of the present invention is 60 cm long, in the actual test, a dummy is placed in front of the cooking table, and the original two stoves on the cooking table each have a heat. The board replaces the stove. The hot plate was heated to 380 ° C, and the "sulphur hexafluoride (SF ₆ )" gas was released on the hot plate. The "sulphur hexafluoride (SF ₆ )" concentration detected in the dummy's nose was as follows:

Therefore, the present invention has the following advantages:

1. The present invention is provided with a horizontally and narrowly extending suction port in the upper half and the lower half of the front end face of the windbox, and the total gas flow rate through the lower suction port at the same time is greater than that through the upper suction port. The total gas flow rate, therefore, provides a structure that effectively eliminates soot and makes the overall configuration of the range hood more compact.

2. The invention can control the position of the pumping by two cover plates which can be moved up and down to effectively remove the soot for cooking pots of different heights, and therefore is quite elastic in use.

In summary, according to the above disclosure, the present invention can achieve the intended purpose, and can provide an effective elimination of soot, which can make the overall configuration more compact, and can be elastically used for cooking at different heights. The double-back suction type range hood is of great value for industrial use, and the invention patent application is filed according to law.

Claims (10)

A double-back suction type range hood includes a wind collecting box connected to at least one air extracting device, wherein the wind collecting box has a front end surface and a rear end surface opposite to the front end surface, the wind collecting unit The upper half of the front end face of the box has at least one first air suction port extending transversely and in a narrow shape, and the lower half of the front end face of the wind collecting box has at least one second air suction port extending transversely and in a narrow shape, the at least one first The air suction port is parallel to the at least one second air suction port, and the at least one first air suction port is connected to the at least one second air suction port to the at least one air suction device, and the at least one air suction device is exhausted at the same time. The total gas flow rate of a second suction port is greater than the total gas flow rate through the at least one first suction port. The double back suction range hood according to claim 1, wherein a total through hole area of the at least one second suction port is larger than a total through hole area of the at least one first suction port. The double suction type range hood according to claim 2, wherein the first suction port has a circular hole shape, and the plurality of first suction ports are arranged at a laterally and narrowly spaced interval. The double-back suction range hood according to claim 1, wherein the wind collecting box comprises a horizontal top and an upright portion in an inverted L shape, the at least one first suction port and the at least one The second suction port is formed on the front end surface of the upright portion. The double-back suction-type range hood of the fourth aspect of the invention, wherein the inside of the wind collection box has an accommodation space, the accommodation space is connected to the air suction device, the at least one first air suction port, and the at least a second suction port, and the air suction device is coupled above the wind collecting box. The double-back suction range hood according to claim 4, further comprising a left vertical plate and a right vertical plate, the left vertical plate being coupled to the left side of the horizontal top portion, and the left side surface The lower vertical plate extends below the right side of the horizontal top and extends downward from the lower side of the right side. The double-back suction-type range hood according to the fourth aspect of the invention, wherein the bottom surface of the horizontal top of the wind collecting box is further provided with at least one air blowing port extending in a narrow shape, and the at least one air blowing port is located at the bottom The front side of the front portion of the upright portion, and the at least one air blowing port is parallel to the at least one first air suction port and the at least one second air suction port. The double-back suction range hood according to claim 1, further comprising a second cover plate, wherein the second cover plate is movably positioned to move the at least one second pump in an upwardly movable manner The front end of the gas port. The double-back suction range hood according to claim 8, further comprising a first cover plate, wherein the first cover plate is movably positioned at the at least one first pump in an upwardly movable manner The front surface of the first cover plate is provided with at least one third air suction port extending in a narrow shape, and the at least one third air suction port is connected to the at least one first air suction port. The double-back suction range hood according to claim 9, further comprising a connecting member, wherein the upper cover and the lower end of the connecting member are respectively connected to the first cover and the second cover for simultaneously Moving the first cover and the second cover.