TWM413824U - Range hood having capability of resisting air flow disturbance - Google Patents

Description

100 years, March 21, nuclear replacement page M413824 V. New description: [New technical field] [0001] This creation is about a range hood, especially one that can block disturbing airflow from all directions to eliminate soot. Contaminants make it suitable for use in home kitchens, restaurant kitchens, and other workplaces that generate polluting gases. [Prior Art] [0002] The "conventional kitchen range hood" is not much different from the top suction hood generally used in the workplace. In such a range hood, within a short distance below the suction port, the velocity of the fluid upwards has become small, and the upward suction force is insufficient, so that it is highly susceptible to movement, fan or air-conditioning. The effect of disturbing airflow; 5, 1% end oil: the smoke trapping area is reduced to a very small range. So suck. The soot near the gas port will escape with the flow of the disturbing airflow, which is harmful to the health of the kitchen cooker. tr [0003] Therefore, the creator has used the principle of gas dynamics to develop a kind of "air curtain". Range hood to overcome: the above problems. The main technique...i :· The technical content lies in the front of the flow table. The air flow is reversed upwards, and a slit-shaped suction hood is placed above the table to allow the table top. The left and right sides are completely emptied to serve as qi, and the airflow of blowing and sucking forms a nearly two-dimensional air curtain. This flow field in accordance with the aerodynamic principle will cause the soot and toxic gas between the oblique air curtain and the rear wall to be discharged to the upper suction hood by the airflow. [0004] When implemented, the above-mentioned range hood can effectively remove and block soot and harmful gases without strongly disturbing the airflow, and can be used as a form number A0101 page 3/33 pages M413824 100 years 03 On the 21st of the month, the shuttle was replacing the w in front of the flow table and the leakage caused by the slight disturbance of the airflow (about the disturbance speed below 20cm/s) was minimized. However, the range hood draws in air by the unobstructed space on the left and right sides of the table top to form a two-dimensional air curtain facing the cook. Therefore, although it can form a strong blocking effect on the interference airflow in front of the flow table, it is difficult to completely exclude other slightly strong disturbance airflows from all directions in the kitchen space, for example, the blowing of the electric fan, or the outside of the door and the window. The inflowing air will make the disturbed airflow in the kitchen space quite complicated, and when the disturbing airflow acts on the left and right sides of the table top, the left and right sides of the table top are emptied to serve as the air supply space. The disturbing airflow from the lateral direction will destroy the air curtain structure through the air supply space, and the ability to remove the oil smoke is greatly reduced. According to the experimental results of the Taiwan University of Science and Technology, when the velocity of the disturbed airflow is greater than about 20 cm/s, the conventionally-discharged conventional range hoods show serious leakage, and the two-dimensional air curtain type exhaust fumes also have leakage. . However, the perturbation airflow that is common in kitchens is difficult to expect and control in a small speed range, so the soot drift is quite serious. Moreover, when the soot gas is in a high temperature state, it is more difficult to prevent the leakage of the soot due to the expansion phenomenon of the gas [0005] Furthermore, since the above-mentioned two-dimensional air curtain type exhaust fumes must be equipped with a device for blowing and exhausting at the same time, It is quite troublesome in replacement or installation work, which will increase the equipment and labor costs. [0006] In view of this, in order to provide a structure different from the conventional technology, and to improve the above disadvantages, the range hood can block the disturbance airflow from all directions and prevent the high temperature inflation gas from leaking, thereby effectively eliminating the smoke and harmful forms. No. A0101

Page 4 of 33 Correction and replacement page on March 21, 100. Gas, the creator's years of experience and continuous research and development improvements, have created this creation. [New Content] [0007] The main purpose of this creation is to provide a range hood with resistance to airflow disturbance, by providing a narrow suction port at the bottom of the suction hood and on the left side of the suction hood. The structure of the elongated vertical plate is respectively arranged below the right side surface, and the turbulence can block the disturbing air flow from the lateral direction to form a complete upward guiding airflow to remove the oil smoke and harmful gases. [0008] The secondary objective of the present invention is to provide a range hood having resistance to airflow disturbance, which is provided with a long v 4 ·Ί-r, a vertical plate, respectively, under the left and south sides of the suction hood. And in front of the two vertical plates ^ cold ^ other genus: there is: the structure of the shape of the flow 1 / ', 俾 can let the air from the front end of the vertical plate: when the space below the hood, can reduce the fluid from the left, A recirculation zone formed by the separation of the front end faces of the right vertical plates to ensure a smooth exhaust gas flow. [0009] Another object of the present invention is to provide a range hood having a turbulence ability against the undisturbed airflow, which is provided with a structure for blowing a groove at one end of the suction port of the suction hood. The crucible can block the high-temperature inflation gas generated by the gas generating device with the air blown downward, and guide the high-temperature inflation gas into the narrow suction port to prevent leakage. [0010] For the purpose of the above creation, the rear end face of the range hood having the ability to resist airflow disturbance is installed on a wall and located above a platform, and a gas is generated on the platform surface of the platform. Device. The range hood includes a suction hood, an elongated left vertical panel, and an elongated right vertical panel. Wherein, the bottom of the suction hood is provided with a narrow and downwardly facing suction port, the form number A0101, page 5 / total 33 pages, March 21, 2001 nuclear replacement page

The narrow and long suction port is connected with a grapefruit gas device for sucking up air. The front end of the narrow suction port is provided with a narrow and downwardly blowing blow groove, and the narrow air blowing groove is connected with the air blowing device for downward Air is blown out; and the elongated air suction port and the elongated air blowing groove are disposed between the front end surface and the rear end surface of the suction hood, and parallel to the front end surface and the rear end surface; the elongated left vertical plate is fixed at the suction Below the left side of the hood, the horizontal width of the elongated left vertical plate is not less than the horizontal distance between the trailing edge of the gas generating device and the wall, and the length of the elongated left vertical plate is not less than the platform to the elongated left vertical plate. The height of the bottom end; and the elongated right vertical plate is fixed below the right side surface of the suction hood, and the horizontal width of the long right vertical plate is not less than the horizontal distance between the trailing edge of the gas generating device and the wall, and the long right The length of the riser of the riser is not less than the height of the platform to the bottom of the elongated right riser. [0011] In implementation, the right side of the front end of the left vertical plate is provided with an arc-shaped first flow guiding portion, and the left side of the front end of the right vertical plate is provided with an arc-shaped second flow guiding portion. [0012] In implementation, when the range hood having the ability to resist airflow disturbance is directly suspended above a platform, the narrow suction port of the range hood is disposed at the front end surface of the suction hood The middle position of the rear end face: the horizontal width of the long left vertical plate is not less than the water-flat width of the left side of the 1/4 suction hood, and the horizontal width of the long right vertical plate is not less than 1/4 of the suction hood The horizontal width of the left side surface is used to cover the left and right sides of the gas generating device. The narrow front end of the narrow suction port is provided with a narrow and downwardly facing blowing groove, and the elongated blowing groove communicates with the air blowing device for blowing air downward, and the elongated blowing groove and the elongated suction port parallel. [0013] In order to facilitate a deeper understanding of this creation, it is described in detail later: Form No. A0101 Page 6 of 33 [0014] Correction of replacement of 100 on March 21, 100 [Embodiment] Please refer to As shown in Fig. 2, it is a first embodiment of the range hood 1 having the ability to resist airflow disturbance. The rear end face is mounted on a wall u and is located above a platform 12, the platform 12 A burner head is arranged on the table top, and a pot is arranged above the burner head, and the burner head is set as a gas generating device 13, wherein a side of the gas generating device 13 facing the wall 11 is defined as a trailing edge 131, and the opposite direction The trailing edge 131 and the side remote from the wall are defined as a leading edge 132. When implemented, the gas generating device 13 may also include a pot or other appliance that can generate harmful gases. The range hood 1 includes a suction hood 2, an elongated left vertical plate 3, and an elongated right vertical plate 4 » [0015] The suction hood 2 includes a wind collection box

a - a generally rectangular casing formed inside, the bottom plate 212 is provided with an elongated and downwardly facing suction port 22 and a narrow and downwardly facing blowing groove 221, and a narrow suction port 22 and the blowing 221 and a blowing groove 221 are located between the front end surface 23 and the rear end surface 24 of the suction hood 2, and are parallel to the front end surface 23 and the rear end surface 24. Bin narrow device 222 is connected for downward blowing, and the air blowing device 222 is a blower or a cross flow fan, and as shown in FIG. 221 may also be composed of a left blowing air groove 2211 and a right blowing air groove 2212 which are located on the same straight line; or the elongated air blowing groove 221, the left blowing air groove 2211 or the right blowing air groove 2212 are several Arranged with spaced air holes. In addition, an oil retaining frame 213 is disposed on the surface of the bottom plate 212 of the wind collecting box 21, and the oil absorbing frame 213 is protruded upward from the plate surface of the bottom plate 212, and is surrounded by the narrow suction port 22. An oil storage box 25 is disposed below the rear end of the bottom surface of the bottom plate 212 of the wind collecting box 21, and the oil storage box form number A0101 is 7 pages/33 pages M413824 _ 100 years old on March 21 The page 25 may also be disposed below the front end of the bottom surface of the bottom plate 21 2 or below the side. Further, the top surface of the wind collecting box 21 is connected to an air extracting device 26 via an exhausting inlet 214, and the inlet 214 is offset directly above the elongated suction port 22. When implemented, the aspirator 26 is a fan, blower or other ventilable fluid machine. [0016] In practice, the wind collecting box 21 may also be a substantially L-shaped housing, and as shown in FIG. 3, the elongated suction port 22 faces downward at an oblique angle; or as shown in FIG. The slit-shaped suction port 22 faces away from the rear end face 24 of the wind collecting box 21. [0017] The elongated left vertical plate 3 is substantially rectangular, and its top end is fixed below the left side surface of the wind collecting box 21 so as to extend from the left side surface of the wind collecting box 21, and the elongated left vertical board 3 is roughly 'perpendicular' to the elongated suction port 22. An arc-shaped first flow guiding portion 31 is disposed on the right side of the front end of the elongated left vertical plate 3. The horizontal width W of the elongated left vertical plate 3 is not less than between the trailing edge 131 of the gas generating device 13 and the wall 11. The horizontal distance W1, that is, the elongated left vertical plate 3 at least blocks a portion of the left side surface of the gas generating device 13; and the elongated left vertical plate 3 has a façade length Η not less than the top end of the platform 12 Increase the height H1 of the bottom end of the left vertical plate 3. [0018] The elongated right vertical plate 4 is symmetrical with the elongated left vertical plate 3 to the left and right sides of the wind collecting box 21, and the top end of the elongated right vertical plate 4 is fixed below the right side surface of the wind collecting box 21. The lower right side plate 4 is extended downward from the lower side of the right side of the wind collecting box 21, and the elongated right vertical plate 4 is substantially perpendicular to the elongated suction port 22. In addition, an arc-shaped second flow guiding portion 41 is disposed on the left side of the front end of the elongated right vertical plate 4. The horizontal width of the elongated right vertical plate 4 is not less than between the trailing edge 131 of the gas generating device 13 and the wall 11. The horizontal distance, that is, the elongated right vertical panel 4 at least blocks a portion of the right side surface of the gas generating device 13, and the length of the elevation of the elongated right vertical panel 4 is not less than the form number Α0101. Page 33 M413824 March 21, 100 Correction of the rij degree of the replacement page flat shuttle 12 to the bottom of the elongated right vertical plate 4. [0019] In this way, the front end surface of the elongated left vertical plate 3 and the lower end of the left side surface of the suction hood 2 form a first rectangular air supply space 27, and the front end surface of the elongated right vertical plate 4 A second rectangular air space 28 having a substantially rectangular shape is formed below the front end of the right side surface of the air suction hood 2. A substantially rectangular third air supply space 29 is formed between the bottom end of the left vertical plate 3 and the left side of the platform 12, and a rough outline is formed between the bottom end of the right vertical plate 4 and the right side of the platform 12. A rectangular fourth plenum space 30.

[0020] Thereby, as shown in FIGS. 5 and 6, when the present creation is fixed on the wall, and the gas generating device 13 starts to generate soot or other, the harmful gas is good, and the operation of the air extracting device 26 will make the elongated pumping The air port 2 2 is uncovered, and a high-speed air suction function of the narrow suction port 2 2 forms an oblique air flow under the front end of the ϋί if to drive the soot or other harmful gas generated by the gas generating device 13 to rise. And after passing through the space 211 inside the windbox 21,

It is discharged outward by the air suction device 26. However, since the suction inlet 214 of the gas installation.26 is offset from directly above the elongated suction port 22, the accumulated waste oil will not directly drain through the narrow shape. < Drops and adheres to the surface of the bottom plate 212. Since the oil retaining frame 213 is framed around the elongated suction port 22 to block the waste oil from dripping downward from the suction groove 22, the waste oil flows downward into the oil storage box 25. Due to the blocking of the elongated left vertical plate 3 and the elongated right vertical plate 4, the disturbing airflow in the lateral direction can be resisted to prevent the oblique airflow structure from being destroyed, thereby forming a complete upward guiding airflow to eliminate Soot and harmful gases. [0021] Further, since the front end of the left vertical plate 3 is provided with a curved first flow guiding portion 31, and the left side of the front end of the right vertical plate 4 is provided with an arc-shaped second flow guiding portion 41, the form number Α0101 9 pages / a total of 33 pages 100 years of March 21, the shuttle is replacing the page ·, when the air enters the space below the wind collecting box 21 through the first air supply space 27 and the second air supply space 28, the air fluid will be The separation points (311, 411) of the first flow guiding portion 31 and the second flow guiding portion 41 are delayed. In this way, the recirculation zone created by the air fluid can be reduced to ensure a smooth exhaust gas flow.

[0022] As shown in FIG. 7, when the gas generating device 13 generates a high-temperature gas, the oil smoke is diffused toward the front end surface 23 of the suction hood 2 due to the expansion phenomenon of the gas, and at this time, the air blowing groove 221 is downward. The blown air can block the high temperature inflation gas from escaping from the front end of the bottom of the suction hood, and guide the high temperature gas to enter the narrow suction port 22 to prevent high temperature gas from leaking. [0023] Please refer to FIG. 8, which is a second embodiment of the present invention, which is different from the first embodiment in that the front end of the platform 12 is provided with an elongated blowing end 5, which is elongated and elongated. The air end 5 is provided with an elongated air blowing port 51 obliquely corresponding to the elongated air suction port 22, and the elongated air blowing port 51 is in communication with a blower 52 to allow the air blowing port 51 to be inclined at an oblique angle by the action of the air blower 52. The jet of air is ejected into the elongated suction port 22, and an oblique air curtain 53 is formed between the elongated air blowing port 51 and the elongated suction port 11. When implemented, the blower 52 can also be mechanically replaced by a cross flow fan or other fluid. [0024] As shown in FIG. 9, it is a third embodiment of the present invention, which is different from the first and second embodiments in that the range hood is directly suspended above the platform 12 so that The front and rear sides of the suction hood 2 are emptied, and the elongated suction port 22 is disposed at a position intermediate between the front end surface 23 and the rear end surface 24 of the suction hood 2, and the front end and the rear end of the elongated suction port 22 are respectively provided with a narrow length. And the air blowing groove 221 is opened downward, and the two narrow air blowing grooves 221 are respectively connected with the modified page air device 222 of the blow form No. A0101, page 10/33, M413824, March 21, 100, respectively. Blow out the air downwards. [0025] In implementation, any of the elongated blowing slots 221 may also be composed of left and right blowing slots that are located on the same line and have a spacing; or the elongated blowing slot 221, the left blowing slot or the right The blowing groove is arranged for a number of spaced blow holes.

[0026] The horizontal width W2 of the elongated left vertical plate 3 is not less than the horizontal width W3 of the left side surface of the 1/4 suction hood 2, and the horizontal width of the elongated right vertical plate 4 is not less than 1/4 of the suction hood 2 The horizontal width of the right side surface is used to cover the left and right sides of the gas generating device 13. As shown in FIG. 10, the rear end of the platform 12 may be provided with another narrow-shaped air blowing end 6, which is provided with an elongated air blowing port 61 corresponding to the elongated air suction port 22. The shape of the gas port 61 is in communication with the blower 52. Thus, when the slit 61 ejects the air jet upward at an oblique angle and enters the elongated suction port 22, the narrow blow port 61 and the elongated suction port 22 can be formed. Another diagonal air curtain 62 is formed between them. : * . ' * * ' . * [0027] By this, there is no blowing end < 5, 6 '), or there is a blowing end (5, 6)

. . . *: ·ψ') and produce an air curtain or two air curtains', which can stably bring the soot or other harmful gas into the upper suction hood 2 and discharge it outward through the action of the air suction device 26. . When the gas generating device 13 generates high-temperature gas, the high-temperature gas can be prevented from being exposed outward from the front end face 23 or the rear end face 24 of the suction hood 2. [0028] For the design of the present creation, the smoke is released on the top of the table, and the laser-assisted smoke flow visualization technique is used for multiple levels of the device and the form number A0101 page 11 of 33 Page M413824 _ 100 years of March 21, the child is replacing the page 'facade to do the inspection. Attachment 1 shows a photograph of the smoke in the observed horizontal and intermediate facades. It can be known from the smoke distribution of the façade that the smoke rising from the smoke generator will be inclined toward the rear wall as the height rises, and then sucked into the suction groove provided on the rear side, and will not overflow from the front; It can be known from the distribution of smoke in the horizontal plane that the smoke rising from the smoke generator is concentrated in the middle area and does not spread to the sides. [0029] In addition, the removal effect of the creation on the stain was examined by the heat flow laboratory of the Taiwan University of Science and Technology using the tracer gas detection method. The sulfur hexafluoride (sf6) gas is released at a certain flow rate and concentration through a gas discharge device installed on the furnace table φ, and then the sulphur hexafluoride concentration and flow rate at the distal end of the upper suction hood pipe are measured, The capture efficiency (capture ef f ici ency,: 77 ) can be calculated, that is, the volume of SFe flowing per unit time divided by the far end of the suction hood pipe divided by the release of the gas release device per unit time 5 [6 volumes] coming out. [0030] The first test is a static test: the suction hood is installed at a different height (H) from the flow table, the disturbed air flow velocity V in the surrounding environment, ί + very small draft (about 0. 03m / s Under the conditions of the five types of range hoods: (1) traditional type hood, (2) traditional type range hood plus the front edge of the flow table has a groove, the shape of the blowing air, (3) the traditional type The left and right sides of the range hood are equipped with guard plates, (4) air curtain type range hoods, and (5) the hood of the creation to test the capture efficiency. The result is shown in Figure 11. Obviously: (1) traditional type range hood, (2) traditional type range hood plus a grooved upper blowing airflow at the leading edge of the flow table and (3) left and right sides of the traditional type range hood plus guard plates The capture efficiency of the type is much lower than that of the (4) air curtain type range hood and (5) the creation of the range hood. And (5) the form number of the hood of the creation A0101 Page 12 of 33 M413824 * » The correction of π capture efficiency on March 21, 100 is higher than (4) air curtain type range hood, especially When the height of the range hood is greater than 0.5 m, the difference is more obvious. [0031] The second test is a test against the ability of the ambient environment to disturb the airflow: the suction hood is installed at a height H = 0.6 m above the flow table, using different disturbing airflow speeds ^ "at an oblique angle of 45° The drafting efficiency test was carried out on the draft of 5 types of range hoods 2m away. The results are shown in Fig. 12. Obviously, (1) traditional type range hood, (2) traditional type range hood plus flow table The front edge has a trough-like blown airflow and (3) the traditional type of range hood has three types of capture efficiencies than the (4) air curtain type range hood and (5) the created range hood The capture efficiency is much lower. And, -,, * vr·/ · te;, , ^ ♦ (5) The creation of the range hood of the creation i is significantly higher than the 4) air curtain type range hood, especially when disturbed Above 0.2m/s, the advantages of this creation are more obvious. Even when the velocity of the disturbed airflow reaches lm/s, the capture efficiency of the creation is not greatly reduced, and the capture efficiency of the other four types of range hoods is As the disturbed airflow increases, it quickly drops to an unacceptable value. Tests that provide disturbed airflow at different angles also show similar results. [0032] Therefore, the present creation has the following advantages: [0033] 1. This creation draws air through a narrow-shaped suction port, and by long The left and right vertical plates block the disturbing airflow from the lateral direction, so that a complete upward guiding airflow can be formed to eliminate the soot and harmful gases. [0034] 2. The creation is by the elongated left, The curved guide at the front end of the right vertical plate reduces the backflow bubble entering the space below the suction hood. Therefore, it is possible to prevent the β backflow bubble from protruding outward and the soot is easily diffused, and the influence of the upward guiding gas form number Α0101 13th Page / Total 33 pages M413824 _ 100 March 21st is to replace the integrity of the page flow to ensure a smoother exhaust gas flow. [0035] 3, the creation of the system through the narrow suction port and long left The combination of the right vertical plates to form a complete upward guiding airflow, thereby eliminating the soot and harmful gases, so that the traditional type of range hood can be directly replaced without replacing other kitchen utensils, and is equivalent in use and installation. [0036] 4. The creation can block the diffusion of the high-temperature inflation gas by the air blown downward by the narrow blowing groove at the bottom of the suction hood, and guide the high-temperature inflation gas into the narrow suction port. Even if the gas is in a high temperature state and has a disturbing airflow, it can effectively prevent leakage. 丨[0037] In summary, according to the above disclosure, the creation can achieve the intended purpose of creation, providing a kind of energy Blocking the disturbing airflow from all directions to effectively eliminate the smoke hood and harmful gas with the ability to resist the airflow disturbance, which is of great value in the industry, and proposes to create a patent application according to law. [Simplified illustration] [0038] Fig. 1 is a perspective view of the first embodiment of the present invention installed above the half. [0039] Fig. 1A is a perspective view showing another embodiment of the air blowing groove of the first embodiment of the present invention. 2 is a schematic cross-sectional view of a first embodiment of the present invention installed on a wall. [0041] Figs. 3 and 4 are schematic cross-sectional views of another shape of the wind collecting box of the present invention. Form No. A0101 Page 14 of 33 M413824 - . On March 21, 100, the shuttle is replacing 100 [0042] The fifth and sixth figures are diagrams showing the state of use of the first embodiment of the present invention during exhaust. [0043] Fig. 7 is a view showing a state of use of the gas generating device of the first embodiment of the present invention in the case of generating a high temperature gas. [0044] FIG. 8 is a view showing a state of use of the second embodiment of the present invention at the time of exhausting. [0045] FIG. 9 is a schematic cross-sectional view showing a third embodiment of the present invention. 10 is a use state diagram of the third embodiment of the present invention in the case of exhausting [0047] Fig. 11 is a comparison of the capture efficiency obtained after the creation and the other state tests respectively.

[0048] Figure 1 2 is a plot of the capture efficiency comparison between the creation and other oil drain/smoke reductions, respectively, after entering the If% state test. [0049] Attachment 1 is the smoke emission of the 'intersection' in the ./X plane 释放 释放 释放 为本 为本 为本 为本 释放 释放 释放 释放 释放 释放 释放 释放 释放 释放 释放 释放 释放 释放 释放 释放 释放 释放 释放 释放 释放 释放 释放 释放 释放 释放 释放 释放 释放 释放 释放 释放

sheet. Factory, ' * ** > ·

• : S [Main component symbol description] [0050] Range hood 1 Wall 11 [0051] Platform 12 Gas generator 13 [0052] Trailing edge 131 Front edge 132 [0053] Suction hood 2 Windbox 21 [0054 ] Space 211 Bottom plate 212 Form No. A0101 Page 15 of 33 M413824 Correction replacement page on March 21, 100. [0055] Oil damper frame 213 [0056] Air vent 2 2 [0057] Left air vent 2211 [0058] Blowing device 222 [0059] Rear end face 24 [0060] Exhaust device 26 [0061] Second plenum space 28 [0062] Fourth plenum space 30 [0063] First diversion portion 31 [0064] Right vertical plate 4 [0065] Blowing end 5, 6 [0066] Blower 52 inlet 214 Blowing groove 221 Right blowing groove 2212 Front end face 23 Oil storage box 2 5 'First qi space 27 Third qi space 29 Long left vertical plate 3 separation points 311, 411 second flow guiding portion 41 air blowing ports 51, 61 air curtains 53, 62

Form number Α0101 Page 16 of 33

Claims (1)

On March 21, 100, Shuttle is replacing page M413824. VI. Patent scope: 1. A range hood with resistance to airflow disturbance. The rear end face is mounted on a wall and located above the platform. a gas generating device is disposed on the surface of the gas, and a side of the gas generating device facing the wall is defined as a trailing edge, and the range hood comprises: a suction hood having a narrow and downwardly facing suction port at the bottom thereof, the elongated suction port being in communication with an air suction device for drawing air upward, the front end of the elongated suction port being provided with a narrow and open face downward a blowing chamber, the elongated blowing chamber is in communication with a blowing device for blowing air downward; and the elongated suction port and the elongated blowing groove are disposed between the front end surface and the rear end surface of the suction hood And parallel to the front ¥ rhyme _ ^ Xuan Hou, the end face of an elongated left vertical plate, fixed below the left side, the horizontal width of the long left vertical plate is not less than the most probable 彳 4 edge of the gas to the wall The horizontal distance, the length of the elevation of the elongated left vertical plate is not less than the height of the platform to the bottom end of the elongated left vertical plate; and an elongated right vertical plate, below the right side of the fixed pen, the elongated right vertical plate The horizontal width of the horizontal edge is not small enough to the horizontal distance between the walls, and the a-side twist of the elongated right vertical plate is not less than the height of the platform to the bottom end of the elongated right vertical plate. 2. The range hood having the ability to resist airflow disturbance according to claim 1, wherein the air blowing groove comprises a left blowing air groove and a right blowing air groove which are located on the same straight line. 3. The range hood having the ability to resist airflow disturbance according to claim 1, wherein the left side of the left vertical plate is provided with an arc-shaped first flow guiding portion, and the front end of the right vertical plate is left. There is a curved second flow guiding part 100203430 Form No. 1010101 Page 17 / Total 33 Page 1003098654-0 M413824 _ 100 years of March 21, the nuclear replacement is 100. If the patent scope is 1, 2 or 3 The exhaust hood having resistance to airflow disturbance, wherein the suction hood comprises a wind collecting box connected to a top surface of the wind collecting box, and the elongated air suction port is formed in the wind collecting box bottom. 5. The range hood having resistance to airflow disturbance according to claim 4, wherein the air suction means is provided with a suction inlet which is offset from directly above the elongated suction port. 6. A row having the ability to resist airflow disturbance as described in claim 5 a hood, wherein a front end of the platform is provided with an elongated blowing end, and the elongated blowing end is provided with an elongated blowing port corresponding to the elongated suction port, and the narrow blowing port is extended upward at an oblique angle. When the jet flows and enters the narrow suction port, an oblique air curtain is formed between the narrow blow port and the narrow suction port. 7. The range hood having resistance to airflow disturbance according to claim 4, wherein the wind collecting box is provided with a bottom plate, and the elongated suction port is formed on the bottom plate, and the plate surface of the bottom plate An oil retaining frame is arranged around the narrow suction port. 8. A range hood having resistance to airflow disturbance, installed above a platform, the platform of which is provided with a gas generating device, the exhaust hood comprising: a suction hood having a narrow bottom at the bottom And an air suction port with a downward opening, the narrow suction port is connected with an air suction device for sucking air upward, and the narrow suction port is disposed at a middle position between the front end surface and the rear end surface of the air suction cover, and is parallel The front end surface and the rear end surface; and the front end and the rear end of the elongated suction port are respectively provided with a narrow and downwardly facing blowing groove, the 100203430 form number A0101 page 18 / total page 333098654-0 M413824 On March 21, 100, according to the positive replacement page, the narrow-shaped blowing air tank is respectively connected with the air blowing device for blowing air downward, and the elongated air blowing grooves are respectively parallel with the narrow-shaped air suction port; a plate fixed to the lower side of the left side surface of the suction hood, the horizontal width of the elongated left vertical plate being not less than a horizontal width of the left side surface of the 1/4 suction hood for covering the left side surface of the gas generating device, Long left vertical plate Surface length not less than the height of the platform to the bottom of the left upright elongated plate; and An elongated right vertical plate is fixed below the middle of the right side surface of the suction hood, and the horizontal width of the elongated right vertical plate is not less than the horizontal width of the right side surface of the 1/4 suction hood to cover the gas generating device On the right side, the length of the elevation of the elongated right vertical panel is not less than the height of the platform to the bottom end of the elongated right vertical panel. 9. The range hood of the humiliation and λ resistance, flow and disturbance capability according to claim 8 of the patent application, wherein the front of the platform has a narrow blowing end, and the two elongated blowing ends Separately: 'Set %¥ to the long-shaped air outlet of the long suction port for jetting the air jet upwards at an oblique angle, and at the same time entering the narrow suction port, in the narrow suction port and two narrow shapes Two corresponding channels are formed between the air blowing ports: oblique: to the air curtain. 10. The hood according to claim 8 or 9; wherein the blowing grooves are on the same straight line and have spaced left and right blowing air grooves. 100203430 Form number Α0101 Page 19 of 33 1003098654-0