CN202613546U - Ventilator - Google Patents

Abstract

A fume exhaust fan is installed above a platform, and a gas production device is arranged on the table surface of the platform. The range hood comprises an air suction cover, wherein a long and narrow air suction opening is formed in the bottom of the air suction cover and used for sucking air upwards, an air blowing groove is formed in the front end of the long and narrow air suction opening and used for blowing air downwards, a long left vertical plate and a long right vertical plate are respectively arranged below the left side surface and the right side surface of the air suction cover, and a rear plate is arranged below the rear end face of the air suction cover. Therefore, when the long air suction opening sucks air, oblique air flow is formed, the long left vertical plate and the long right vertical plate can block disturbance air flow from the side direction, and the rear plate can prevent oil smoke and harmful gas from being leaked outwards from the lower part of the rear end face of the air suction cover.

Description

Ventilator

technical field

The utility model relates to a range hood, in particular to a range hood that can block disturbed airflow from all directions to remove oil fume pollutants and prevent oil fumes and harmful gases from leaking outwards, making it suitable for family kitchens, business restaurant kitchens and other Workplaces that generate polluting gases.

Background technique

"Traditional kitchen range hoods" are not much different from top-suction hoods generally used in workplaces. In a very short distance below the suction port of this type of range hood, the upward speed of the fluid has become very small, which makes the upward suction force insufficient. The influence of other disturbed airflow makes the effective oil fume trapping area shrink to a very small range. In this way, the cooking fume close to the air inlet will escape with the flow of the disturbed airflow, endangering the health of cooks in the kitchen.

Therefore, the present inventor has used the principle of aerodynamics to develop a range hood with an "air curtain" to overcome the above-mentioned problems. Its main technical content is to set an airflow that blows upwards obliquely on the front side of the flow table, and to set a slit-shaped exhaust hood above the stove top, and to make the left and right sides of the stove top completely transparent as a supplementary airflow. It is used for air, and makes the blowing and sucking air flow form an almost two-dimensional air curtain. And this flow field conforming to the principle of aerodynamics will make the oil fume and toxic gas between the oblique air curtain and the rear wall brought to the upper suction hood stably by the air flow and discharged.

When implemented, the above-mentioned range hood can effectively remove and block oily fumes and harmful gases without strongly disturbing the airflow, and it can also prevent people from walking in front of the kitchen table and lightly disturbing the airflow (about 20 cm/s) Disturbance speed below) and the leakage caused by it is minimized. But this range hood is to inhale air by means of the unobstructed space on the left and right sides of the stove top to replenish air, so that a two-dimensional air curtain facing the cook is formed. Therefore, although it can form a strong blocking effect on the disturbing airflow in front of the counter, it is difficult to completely exclude other slightly strong disturbing airflow from all directions in the kitchen space, such as: the blowing of an electric fan, or the air blown by the door or window. The inflow of air will make the disturbed airflow in the kitchen space quite complicated, and when the disturbed airflow acts on the left and right sides of the stove top, the left and right sides of the stove top are hollow to serve as air supply space , the turbulent airflow from the side will pass through the air supply space and destroy the air curtain structure, greatly reducing the ability to remove oily smoke. According to the experimental results of Taiwan University of Science and Technology, when the velocity of the disturbed airflow is greater than about 20 cm/s, the traditional type of range hoods generally available in the market will show serious leakage, and the two-dimensional air curtain type of range hood will also leak. . However, the turbulent airflow that is common in general kitchens is difficult to expect and control in a small speed range, so the leakage of oil fume is quite serious. And when the fume gas is in a high-temperature state, it will be more difficult to prevent the leakage of the fume due to the expansion phenomenon of the gas.

Furthermore, because the above-mentioned two-dimensional air curtain type oil fume exhaust must be equipped with blowing and exhausting devices at the same time, it is quite troublesome to replace or install, and will relatively increase equipment and labor costs.

In view of this, in order to provide a structure different from the prior art, and improve the above-mentioned shortcomings, so that the range fume exhaust machine can block the turbulent air flow from all directions, and prevent the leakage of high-temperature expansion gas, so as to effectively remove oil fumes and harmful gases, The inventor has accumulated many years of experience and continuous research and development to improve, then there is the generation of the utility model.

Utility model content

The main purpose of this utility model is to provide a range hood, by means of the bottom of the suction hood is provided with a long and narrow suction port, and the left side, the right side and the rear end of the suction hood are respectively provided with a long The structure of the shaped vertical plate can block the turbulent airflow from the side, so that a complete upward guiding airflow can be formed to eliminate oil fume and harmful gas, and prevent oil fume and harmful gas from leaking outward from the lower surface of the rear end of the suction hood.

The secondary purpose of the utility model is to provide a range hood. With the help of the structure of a see-through elongated vertical plate under the rear end surface of the suction hood, the range hood can be used in an island-shaped kitchen. When used, a transparent line of sight can be formed to produce a wide visual effect.

In order to achieve the above-mentioned purpose of the invention, the range hood provided by the utility model is located above a platform, and a gas generating device is arranged on the table of the platform, and the range hood includes a suction hood, a rear plate, a long Shaped left riser and a long shape right riser. Wherein, the bottom of the suction hood is provided with a long and narrow suction port with the opening facing downwards. The long and narrow suction port communicates with the suction device for upward suction of air. The blowing groove of the narrow and long shape is connected with the blowing device for blowing air downward; the long and narrow air suction port and the long and narrow blowing groove are arranged between the front end surface and the rear end surface of the suction hood, and are parallel The front end surface and the rear end surface; the rear plate is fixed below the rear end surface of the suction hood, and the elevation length of the rear plate is not less than the height from the platform to the bottom of the rear plate; the elongated left vertical plate is fixed on the left side of the suction hood Below the side, the horizontal width of the long left vertical board is not less than the horizontal distance from the rear edge of the gas generating device to the rear board, and the elevation length of the long left vertical board is not less than the height from the platform to the bottom end of the long left vertical board and the elongated right vertical plate is fixed below the right side of the suction hood, the horizontal width of the elongated right vertical plate is not less than the rear edge of the gas generating device to the horizontal distance between the rear plate, the elongated right vertical plate The length of the facade is not less than the height from the platform to the bottom of the long right vertical plate.

During implementation, the left side of the rear plate is adjacent to the rear end of the elongated left vertical plate, and the right side of the rear plate is adjacent to the rear end of the elongated right vertical plate.

During implementation, the back plate is a rectangular flat plate.

During implementation, the rear panel is a see-through flat panel.

Therefore, the utility model has the following advantages:

1. The utility model draws air with the help of the long and narrow air suction port, and blocks the disturbed air flow from the side with the long left and right vertical plates. Therefore, a complete upward guiding air flow can be formed to eliminate oil fumes and harmful gases.

2. The utility model reduces the return bubbles entering the space below the suction hood by means of the arc-shaped guides at the front ends of the elongated left and right vertical plates, so that the return bubbles can be prevented from protruding outwards and the oil fume is easy to diffuse, and Affects the integrity of the upwardly directed airflow to ensure smoother exhaust airflow.

3. The utility model utilizes the combination of the narrow and long air suction port, the long left and right vertical plates and the rear plate to form a complete upward guiding airflow, thereby eliminating oil fumes and harmful gases. Therefore, it can be used without replacing other kitchen utensils. It directly replaces the traditional range hood and is quite convenient to use and install.

4. The utility model can block the diffusion of the high-temperature expansion gas by means of the air blown downward from the long and narrow blowing groove at the bottom of the suction hood, and guide the high-temperature expansion gas into the long and narrow suction port. Therefore, even if the gas is at a high temperature state, and with disturbed airflow, it can still effectively prevent leakage.

5. The rear panel of the utility model can be seen through, so it can not only effectively prevent oil fumes or other harmful gases from leaking backwards, but also form a transparent line of sight when installed in an island-shaped kitchen to produce a wide visual effect .

For the convenience of having a deeper understanding of the utility model, it will be described in detail later.

Description of drawings

Fig. 1 is a perspective schematic view of a preferred embodiment of the present invention installed above a platform.

FIG. 1A is a schematic perspective view of another embodiment of the air blowing groove of the preferred embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of a preferred embodiment of the present invention installed on a wall.

3 and 4 are schematic cross-sectional views of another shape of the wind collecting box of the present invention.

Figures 5 and 6 are diagrams of the preferred embodiment of the utility model in use when exhausting air.

Fig. 7 is a diagram of the use state of the gas generating device in a preferred embodiment of the present invention when generating high-temperature gas.

[Description of main component symbols]

range hood 1 wall 11 platform 12 gas generating device 13

Rear edge 131 Front edge 132 Suction hood 2 Air collection box 21

Space 211 Bottom plate 212 Oil retaining frame 213 Inlet 214

Air outlet 22 Blowing slot 221 Left blowing slot 2211 Right blowing slot 2212

Air blowing device 222 front end face 23 rear end face 24 oil storage box 25

Air extraction device 26 First air supply space 27 Second air supply space 28 Third air supply space 29

Fourth air supply space 30 Long left vertical plate 3 First diversion part 31 Separation points 311, 411

The elongated right vertical plate 4 the second guide part 41 the rear plate 5.

Detailed ways

Please refer to shown in Fig. 1, 2, it is the preferred embodiment of range hood 1 of the present utility model, and its rear end face is installed on a wall 11, and is positioned at the top of a platform 12, and the table top of this platform 12 is provided with A burner head, a cooker can be arranged above the burner head, and the burner head is set as a gas generating device 13, wherein, the side of the gas generating device 13 facing the wall 11 is defined as a rear edge 131, and the rear edge 131 is opposite to the rear edge 131. A side away from the wall 11 is defined as a front edge 132 . During implementation, the gas generating device 13 may also include a pot, or other utensils that can generate harmful gas. The range hood 1 includes a suction hood 2 , a long left vertical board 3 , a long right vertical board 4 and a rear board 5 .

The air suction hood 2 includes a wind collecting box 21, which is a roughly rectangular shell with a space 211 formed inside. The air suction port 22 and a long and narrow air blowing groove 221 with the opening facing down, and the long and narrow air suction port 22 and the air 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. End face 24. The elongated air blowing groove 221 communicates with an air blowing device 222 for blowing air downwards; during implementation, the air blowing device 222 is a blower or a cross-flow fan, and as shown in Figure 1A, the elongated air blowing Groove 221 also can be positioned on same straight line, and the left blowing groove 2211 of tool interval and the right blowing groove 2212 are formed; There are spaced blow holes arranged in a row. In addition, an oil deflecting frame 213 is provided on the surface of the bottom plate 212 of the air collecting box 21 , and the oil deflecting frame 213 protrudes upward from the surface of the bottom plate 212 and surrounds the narrow and long air suction port 22 . An oil storage box 25 is arranged below the rear end of the bottom plate 212 of the wind collecting box 21 , and the oil storage box 25 can also be arranged under the front end or side of the bottom plate 212 . In addition, the top surface of the air collection box 21 is connected upwardly to an air extraction device 26 through an air extraction inlet 214 , and the inlet 214 deviates from directly above the narrow and long air extraction opening 22 . During implementation, the suction device 26 is a suction fan, blower or other fluid machinery capable of suction.

During implementation, the wind collecting box 21 can also be a roughly L-shaped housing, and as shown in Figure 3, the narrow and long air suction port 22 faces downward at an inclined angle; or as shown in Figure 4, the long and narrow air suction port 22 faces A direction away from the rear end surface 24 of the wind collecting box 21 .

The elongated left vertical plate 3 is roughly rectangular, and its top is fixed below the left side of the wind collecting box 21, so that it extends downward from the left side of the wind collecting box 21, and the elongated left vertical plate 3 and the narrow and long drawer The air port 22 is roughly vertical. The right side of the front end of the elongated left vertical plate 3 is provided with an arc-shaped first guide portion 31, and the horizontal width W of the elongated left vertical plate 3 is not less than the distance between the rear edge 131 of the gas generating device 13 and the wall 11. The horizontal distance W1, that is, the elongated left vertical plate 3 can at least block a part of the left side of the gas generating device 13; The height H1 of the bottom of the left vertical plate 3.

The elongated right vertical plate 4 and the elongated left vertical plate 3 are symmetrical to the left and right sides of the wind collecting box 21, and the top of the elongated right vertical plate 4 is fixed below the right side of the wind collecting box 21, so that the wind collecting box 21 Extend downwards below the right side, and make the elongated right vertical plate 4 and the narrow and elongated air suction port 22 roughly vertical. In addition, an arc-shaped second guide portion 41 is provided on the left side of the front end of the elongated right vertical plate 4, and the horizontal width of the elongated right vertical plate 4 is not less than that between the rear edge 131 of the gas generating device 13 and the wall 11. That is, the elongated right vertical plate 4 can at least block a part of the right side of the gas generating device 13, and the facade length of the elongated right vertical plate 4 is not less than the top of the platform 12 to the elongated The height of the bottom of the right vertical plate 4.

In this way, the front end surface of the elongated left vertical plate 3 and the lower side of the left side front end of the suction hood 2 form a roughly rectangular first air supply space 27, and the front end surface of the elongated right vertical plate 4 and the suction hood The bottom of the front end of the right side of 2 forms a roughly rectangular second air supply space 28 . And a roughly 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 roughly rectangular third air supply space 29 is formed between the bottom end of the right vertical plate 4 and the right side of the platform 12. The fourth air supply space 30 .

And this back plate 5 is a rectangular flat plate, and its top is fixed below the rear end surface 24 of wind collecting box 21, and the elevation length of back plate 5 is not less than the height of platform 12 to the bottom of back plate 5, and the left side of back plate 5 adjoins The rear end face of the elongated left vertical plate 3 and the right side of the rear plate 5 are adjacent to the rear end face of the elongated right vertical plate 4 .

Thereby, as shown in Figures 5 and 6, when the utility model is fixed on the wall, and the gas generating device 13 starts to produce oil fumes or other harmful gases, the operation of the air extraction device 26 will cause the narrow and long air suction port 22 to start to draw upwards. Gas, and with the help of the high-speed suction effect of the narrow and long air suction port 22, an oblique airflow is formed under the front end of the wind collecting box 21 to drive the oil fume or other harmful gases generated by the gas generating device 13 to rise and pass through the wind collecting box 21 After the internal space 211, it is exhausted to the outside through the air extraction device 26. And because the suction inlet 214 of the suction device 26 deviates from the right above the narrow and long air suction port 22, therefore, the accumulated waste oil will not directly drop down through the long and narrow air suction port 22, but will adhere to the plate of the bottom plate 212 face. And because the oil retaining frame 213 frame surrounds the four sides of the narrow and long air suction port 22 to stop the waste oil from dripping down from the suction groove 22, therefore, the waste oil will flow down 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 turbulent airflow from the side can be resisted to prevent the above-mentioned oblique airflow structure from being destroyed, and due to the barrier of the rear plate 5, it can prevent Oil fumes or other harmful gases leak outward from the rear end surface 24 of the air collecting box 21 to the left side of the elongated left vertical plate 3 and the right side of the elongated right vertical plate 4, thereby forming a complete upward guiding airflow to eliminate Fumes and harmful gases.

During implementation, the rear plate 5 can also be a see-through flat plate. When the utility model is installed in an island-shaped kitchen, it can also prevent oil fume or other harmful gases from leaking, and can also produce the effect of visual penetration.

Moreover, since the front end right side of the left vertical plate 3 is provided with an arc-shaped first air guide portion 31, and the front end left side of the right vertical plate 4 is provided with an arc-shaped second air guide portion 41, therefore, when the air passes through the first When the first air supply space 27 and the second air supply space 28 enter the space below the wind collecting box 21, the separation points (311, 411) between the air fluid and the first flow guide part 31 and the second flow guide part 41 will be delayed . In this way, the recirculation zone generated by the air fluid can be reduced to ensure smooth exhaust air flow.

And as shown in Figure 7, when gas generating device 13 produces high-temperature gas, due to the expansion phenomenon of gas, oil fume will be made to diffuse toward the front end face 23 direction of suction hood 2, and the air blowing downwards of air blowing groove 221 can now be Prevent the high-temperature expansion gas from escaping from the front end of the suction hood bottom, and guide the high-temperature gas to enter the narrow and long air suction port 22 to prevent the high-temperature gas from leaking.

Therefore, the utility model has the following advantages:

1. The utility model draws air with the help of the long and narrow air suction port, and blocks the disturbed air flow from the side with the long left and right vertical plates. Therefore, a complete upward guiding air flow can be formed to eliminate oil fumes and harmful gases.

2. The utility model reduces the return bubbles entering the space below the suction hood by means of the arc-shaped guides at the front ends of the elongated left and right vertical plates, so that the return bubbles can be prevented from protruding outwards and the oil fume is easy to diffuse, and Affects the integrity of the upwardly directed airflow to ensure smoother exhaust airflow.

3. The utility model utilizes the combination of the narrow and long air suction port, the long left and right vertical plates and the rear plate to form a complete upward guiding airflow, thereby eliminating oil fumes and harmful gases. Therefore, it can be used without replacing other kitchen utensils. It directly replaces the traditional range hood and is quite convenient to use and install.

4. The utility model can block the diffusion of the high-temperature expansion gas by means of the air blown downward from the long and narrow blowing groove at the bottom of the suction hood, and guide the high-temperature expansion gas into the long and narrow suction port. Therefore, even if the gas is at a high temperature state, and with disturbed airflow, it can still effectively prevent leakage.

5. The rear panel of the utility model can be seen through, so it can not only effectively prevent oil fumes or other harmful gases from leaking backwards, but also form a transparent line of sight when installed in an island-shaped kitchen to produce a wide visual effect .

To sum up, according to the content disclosed above, the utility model can indeed achieve the expected purpose of the utility model, providing a kind of exhaust that can block the disturbed airflow from all directions and prevent leakage, so as to effectively eliminate oil fumes and harmful gases. The range hood has great value in industrial application, and a patent application was filed according to law.

Claims (4)

1. smoke exhaust is positioned at the top of a platform, and the table top of this platform is provided with an aerogenesis apparatus, and this smoke exhaust comprises:

One air-suction cover; Its bottom is provided with a long and narrow and downward opening bleeding point; This thin-and-long bleeding point is communicated with an air extractor, feeds to suction air, and the front end of this thin-and-long bleeding point is provided with a long and narrow and downward opening blowing groove; This thin-and-long blowing groove is communicated with a blowning installation, feeds to down blow out air; And this thin-and-long bleeding point and thin-and-long blowing groove are arranged between the front end face and rear end face of air-suction cover, and parallel this front end face and this rear end face;

One back plate is fixed on below the rear end face of air-suction cover, and the facade length of this back plate is not less than the height of platform to plate bottom, back;

One microscler left riser is fixed on the left surface below of air-suction cover, and the horizontal width of this microscler left riser is not less than the horizontal range between trailing edge to the back plate of aerogenesis apparatus, and the facade length of this microscler left riser is not less than the height of platform to microscler left riser bottom; And

One microscler right riser is fixed on the right flank below of air-suction cover, and the horizontal width of this microscler right riser is not less than the horizontal range between trailing edge to the back plate of aerogenesis apparatus, and the facade length of this microscler right riser is not less than the height of platform to microscler right riser bottom.

2. smoke exhaust as claimed in claim 1 is characterized in that, the left surface of this back plate is in abutting connection with the rear end face of microscler left riser, and the right flank of this back plate is in abutting connection with the rear end face of microscler right riser.

3. smoke exhaust as claimed in claim 1 is characterized in that, this back plate is a rectangular flat plate.

4. like claim 1,2 or 3 described smoke exhausts, it is characterized in that the flat board of this back plate for having an X-rayed.

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