Double-air-duct air curtain range hood

Abstract

The utility model discloses a double-air-duct air curtain range hood which comprises a range hood shell, and an oil smoke suction port, an air curtain port and an air inlet are formed in the bottom end of the range hood shell; air curtain openings are formed in the two sides of the oil smoke suction opening; a cavity is formed in the range hood shell, a partition plate is arranged in the cavity, and the partition plate is annularly arranged in the cavity so as to divide the cavity into a cooking fume cavity located in the middle and an air curtain cavity annularly arranged on the periphery of the cooking fume cavity; the lampblack cavity is correspondingly communicated with the lampblack suction port; the air curtain cavity is communicated with the air curtain opening and the air inlet; and the air curtain fan is arranged in the air curtain cavity, and the air curtain fan is used for forming negative pressure in the air curtain cavity so as to enable the air curtain opening to form an air curtain. According to the range hood, sucked airflow can be blown into the air curtain cavity through the same air curtain fan, so that an air curtain is formed on the side part of the oil fume suction port, and oil fume overflow is reduced; and the lampblack cavity and the air curtain cavity are separated by the annularly arranged partition plate, so that airflow interference of the air curtain cavity and the lampblack cavity can be completely blocked.

Description

TECHNICAL FIELD

[0001] The utility model relates to range hood technical field especially relates to a double air flue's air curtain range hood. BACKGROUND

[0002] At present, the range hood drives the fan to produce suction force through the internal motor, and the oil fume of the oil fume suction area at the bottom of the range hood is sucked into the range hood interior, and is discharged outdoor through the oil fume adsorption channel. In order to prevent the oil fume overflow in the process of sucking the oil fume, another fan is further arranged in the range hood shell to form the air curtain below the range hood. In order to improve the forming area of the air curtain, the existing fan for forming the air curtain is arranged on one side, and when a large area of air curtain area is needed, one fan is arranged in one air flue, which causes the range hood to be high in cost and large in overall wind noise.

[0003] In addition, since the air flow of sucking the oil fume and forming the air curtain is all in the range hood shell, the air flow of the oil fume and the air curtain will interfere with each other, so that the formed air curtain can also have the oil fume, and the air curtain effect is poor. SUMMARY

[0004] In order to overcome at least one of the defects of the prior art, the utility model provides a double air flue's air curtain range hood, which can blow the sucked air flow into the air curtain cavity through the same air curtain fan to form the air curtain on the side of the oil fume suction port and reduce the oil fume overflow. The oil fume cavity and the air curtain cavity are separated by the ring-shaped separation plate, and the air flow interference between the air curtain cavity and the oil fume cavity can be completely blocked.

[0005] The utility model adopts the technical scheme that

[0006] A double air flue's air curtain range hood, comprising,

[0007] The range hood shell is provided with an oil fume suction port, an air curtain port and an air inlet at the bottom end; the air curtain port is arranged on both sides of the oil fume suction port;

[0008] A cavity is arranged in the range hood shell, a separation plate is arranged in the cavity, the separation plate is arranged in the cavity to separate the cavity into an oil fume cavity located in the middle and an air curtain cavity arranged around the oil fume cavity; the oil fume cavity is in communication with the oil fume suction port; the air curtain cavity is in communication with the air curtain port and the air inlet;

[0009] An air curtain fan is arranged in the air curtain cavity, and the air curtain fan is used for guiding the air flow to be introduced into the air curtain cavity through the air inlet and guiding the air flow in the air curtain cavity to be introduced out of the air curtain cavity through the air curtain port to form the air curtain.

[0010] Further, the air curtain cavity section comprises two first leading-out cavity sections and a communication cavity section, the two first leading-out cavity sections are respectively located at two sides of the oil fume cavity and are communicated through the communication cavity section; the air curtain fan is arranged in one of the first leading-out cavity sections.

[0011] Further, the first leading-out cavity section and the communication cavity section are connected through a guide inclined surface.

[0012] Further, the air curtain cavity section further comprises a second leading-out cavity section, the second leading-out cavity section is located at the front side of the oil fume cavity and is communicated with front ends of the two first leading-out cavity sections; the front side of the oil fume suction port is provided with an air curtain port communicated with the second leading-out cavity section.

[0013] Further, a baffle and a baffle driving member are arranged between the communication cavity section and one of the first leading-out cavity sections, the baffle is rotatably connected to the partition plate, and the baffle driving member is used for driving the baffle to rotate to block the communication cavity section or open the communication cavity section.

[0014] Further, the air inlet is arranged at the top end of the one of the first leading-out cavity sections.

[0015] Further, the air curtain port comprises a plurality of air curtain holes, and the plurality of air curtain holes are arranged at the bottom end of the oil fume extractor shell and are distributed on both sides of the oil fume suction port.

[0016] Further, the oil fume suction port comprises a plurality of oil fume suction holes, and the oil fume extractor shell is arranged with the plurality of oil fume suction holes in the length direction and the width direction.

[0017] Further, the top end of the oil fume extractor shell is provided with a smoke outlet channel, the smoke outlet channel is communicated with the top end of the oil fume cavity, and the oil fume fan is arranged in the smoke outlet channel.

[0018] Further, the bottom end of the oil fume extractor shell is provided with an oil fume recess which is recessed upward, so that the peripheral wall of the oil fume recess protrudes from the bottom wall of the cavity, the partition plate is arranged at the top end of the peripheral wall of the oil fume recess and abuts against the top wall of the cavity, and the oil fume port is arranged at the bottom wall of the oil fume recess.

[0019] In summary, the oil fume extractor shell has the following technical effects:

[0020] 1. Because the internal cavity of the range hood is blocked by a ring-shaped partition, the resulting fume chamber is the space enclosed by the partition. The space enclosed by the partition and the inner wall of the cavity is the air curtain cavity, which is ring-shaped and surrounds the fume chamber, blocking the fume chamber from the air curtain cavity. This completely blocks the airflow in the fume chamber from the airflow in the air curtain cavity, preventing the fume in the fume chamber from entering the air curtain cavity and being discharged. In this way, the airflow forming the air curtain at the air curtain opening of the air curtain cavity is relatively clean, reducing the impact of fume on the air curtain.

[0021] 2. Since the air curtain cavity is annular, the air curtain fan is placed behind the air curtain cavity. One air curtain fan can guide the airflow within the annular air curtain cavity. Only one air curtain fan is needed to exhaust the airflow from both sides, reducing the cost of forming the air curtain. At the same time, the annular airflow is gentler, so the airflow speed of the air curtain formed by the air curtain outlet is stable. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a cross-sectional view of the present invention;

[0024] Figure 3 This is another structural view of the present invention;

[0025] Figure 4 This is a cross-sectional view from another perspective of the present invention.

[0026] The meanings of the reference numerals in the attached drawings are as follows: 10, range hood housing; 11, air inlet; 12, fume duct; 13, air curtain hole; 14, fume chamber; 15, first outlet section; 16, connecting section; 17, second outlet section; 18, fume groove; 20, range hood fan; 30, partition plate; 31, guide slope; 32, baffle. Detailed Implementation

[0027] To better understand and implement this invention, the technical solutions in the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings.

[0028] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application.

[0030] Referring to Figures 1-4 The utility model discloses a double air flue's air curtain range hood, including range hood shell 10 and air curtain fan, is equipped with the oil fume suction port, air curtain mouth and air inlet 11 at the bottom of range hood shell 10, and is equipped with air curtain mouth on both sides of oil fume suction port.

[0031] Specifically, the cavity is provided in the range hood shell 10, and a partition plate 30 is arranged in the cavity to divide the cavity into an oil fume cavity 14 located in the middle and an air curtain cavity arranged around the oil fume cavity 14, that is, the air curtain cavity is arranged around the oil fume cavity 14 and is separated from the oil fume cavity 14 by the partition plate 30. The oil fume cavity 14 is in communication with the oil fume suction port, and the air curtain cavity is in communication with the air curtain mouth and the air inlet 11. In addition, the air curtain fan is arranged in the air curtain cavity, and when the air curtain fan is started, the airflow outside the range hood shell 10 can be guided into the air curtain cavity, and then be discharged through the air curtain mouth in communication with the air curtain cavity under the action of the air curtain fan, so that an air curtain is formed at the bottom of the range hood shell 10.

[0032] Based on the above structure, when the double air flue's air curtain range hood of the utility model is used, the oil fume fan 20 of the range hood is started when the oil fume extraction operation is performed, and when the oil fume fan 20 is started, a negative pressure can be generated in the oil fume cavity 14, so that the oil fume can be sucked into the oil fume cavity 14 through the oil fume suction port at the middle of the bottom of the range hood shell and then be discharged through the oil fume pipeline. During the oil fume extraction process, the air curtain motor can be started synchronously, and the air curtain motor can guide the airflow outside the kitchen into the air curtain cavity through the air inlet 11, discharge the airflow through the air curtain mouth at the bottom of the air curtain cavity, and form an air curtain at the position of the air curtain mouth.

[0033] In the present application, the air curtain mouth is located on both sides of the oil fume suction port, so that the airflow guided by the air curtain cavity can be discharged through the air curtain mouth on both sides of the oil fume suction port to form an air curtain on both sides of the oil fume suction port, and the oil fume sucked into the range hood shell 10 is surrounded in the middle position, so that the oil fume can be prevented from overflowing from both sides.

[0034] It should be noted that since the cavity inside the range hood shell 10 is blocked by the ring-shaped partition plate 30, the oil fume cavity 14 is formed in the space surrounded by the ring-shaped partition plate 30, and the space surrounded by the partition plate 30 and the inner circumferential wall of the cavity is the air curtain cavity, which is annularly arranged around the oil fume cavity 14 to block the oil fume cavity 14 and the air curtain cavity, so that the oil fume entering the oil fume inlet is completely blocked from the airflow in the air curtain cavity, preventing the oil fume in the oil fume cavity 14 from entering the air curtain cavity and being discharged. In this way, the airflow of the air curtain formed by the air curtain outlet is relatively clean, reducing the influence of oil fume on the air curtain.

[0035] In addition, since the air curtain cavity is annularly arranged, the air curtain fan is arranged at the rear of the air curtain cavity, so that one air curtain fan can guide the airflow to flow in the annular air curtain cavity. Only one air curtain fan is needed to achieve the discharge of the air curtain airflow from both sides, reducing the cost of forming the air curtain, and the annularly flowing airflow is more moderate, so that the air curtain speed formed by the air curtain outlet is stable.

[0036] Further, the air curtain cavity section in the embodiment includes two first discharge cavity sections 15 and a communication cavity section 16. The two first discharge cavity sections 15 are respectively located on both sides of the oil fume cavity 14 and are connected through the communication cavity section 16. The air curtain fan is arranged in one of the first discharge cavity sections 15.

[0037] In this way, when the air curtain motor is working, the air curtain motor can guide the airflow to enter one of the first discharge cavity sections 15 through the air inlet 11. Part of the airflow in the first discharge cavity section 15 can be directly discharged through the air curtain outlet at the bottom end of the corresponding side, and part of the airflow can be guided to the other first discharge cavity section 15 through the communication cavity section 16 and discharged through the air curtain outlet at the bottom end of the corresponding side. In this way, the same air curtain motor can guide the airflow to the air curtain outlets on both sides through one of the first discharge cavity sections 15.

[0038] On the basis of this structure, the above-mentioned ring-shaped partition plate 30 can also be two first plate sections on both sides and a second plate section connected between the first plate sections. The front ends of the two first plate sections can be directly connected to the front wall of the cavity, and the rear ends of the two first plate sections can be connected through the second plate section, thereby forming the two first discharge cavity sections 15 and the communication cavity section 16. In this way, the air curtain airflow can only be discharged through the communication cavity section 16 at the rear end to the two first discharge cavity sections 15, reducing the airflow guided by the air curtain fan to flow in other positions of the cavity, so that the airflow is more concentrated.

[0039] More specifically, a guide inclined surface 31 can also be connected between the first discharge cavity section 15 and the communication cavity section 16.

[0040] Compared with the airflow suddenly changes direction at the right angle, the smoothness of the flow is greatly affected, and the sharp edge of the right angle is easy to make the airflow separation and vortex, increase the local resistance of the airflow, the energy loss of the airflow is large, and the flow velocity will be significantly reduced at the right angle. Therefore, in the embodiment, the junction of the first guide cavity section 15 and the communication cavity section 16 is a guide slope 31. When the airflow passes through the junction of the slope, the airflow can change direction along the slope relatively smoothly, the flow is relatively smooth, and the vortex and turbulence generated by the sudden change of direction are reduced.

[0041] Specifically, the wind curtain cavity section can further include a second guide cavity section 17. The second guide cavity section 17 is located on the front side of the oil fume cavity 14 and is in communication with the front ends of the two first guide cavity sections 15. A wind curtain opening in communication with the second guide cavity section 17 is arranged on the front side of the oil fume suction opening. That is to say, when the wind curtain fan is started, the airflow introduced through the air inlet 11 can be guided out through the wind curtain opening of one of the first guide cavity sections 15 on one side, part of the airflow can be guided to the first guide cavity section 15 on the other side through the communication cavity section 16 at the rear end, and part of the airflow can flow to the second guide cavity section 17 at the front end and be guided out through the wind curtain opening on the front side. In this way, the formed wind curtain is guided out on the front side and the left and right sides of the range hood shell 10, forming a semi-enclosed wind curtain area. Since the rear end of the range hood is generally installed against a wall, the oil fume is limited in the semi-enclosed wind curtain area after the range hood is assembled, and the wall can form an obstruction at the rear, so that the oil fume can be concentrated and guided out at the middle position, and the effect of extracting oil fume is better.

[0042] On the basis of this structure, the above-mentioned annularly arranged partition plate 30 can also be two first plate sections on the two sides and two second plate sections connected between the first plate sections. The front ends of the two first plate sections can be connected by the second plate sections at the front ends, and the rear ends of the two first plate sections can be connected by the second plate sections. In this way, a wind curtain cavity section structure in the form of a ring around the four sides can be formed.

[0043] Further, a baffle 32 and a baffle 32 driving member can be arranged between the communication cavity section 16 and one of the first guide cavity sections 15. The baffle 32 is rotatably connected to the partition plate, and the baffle 32 driving member is used to drive the baffle 32 to rotate to block the communication cavity section 16 or open the communication cavity section 16. The baffle 32 driving member can be selected from the existing motor.

[0044] On the basis of the structure of two first guide cavity sections 15 and one communication cavity section 16, the baffle 32 driving member can be started to drive the baffle 32 to rotate to an open state. In this way, the first guide cavity sections 15 on both sides of the baffle 32 can be communicated through the communication cavity section 16, so that the first guide cavity sections 15 on both sides can guide the airflow out through the corresponding wind curtain opening, and the formation of the double-sided wind curtain is realized.

[0045] However, when only one side of the corresponding stove is used or only one side of the oil fume is generated, only one side of the air curtain can be formed. At this time, the baffle 32 is driven by the baffle 32 driving member to rotate to the closed state, so that the first outlet cavity section 15 and the communication cavity section 16 are in a cut-off state, and thus the air flow can be guided into the first outlet cavity section 15 on the corresponding side to form an air curtain structure.

[0046] Of course, if two first outlet cavity sections 15, one communication cavity section 16, and one second outlet cavity section 17 are provided, the above-mentioned baffle 32 can be provided between the communication cavity section 16 and the second outlet cavity section 17 and the first outlet cavity section 15. The rotation of the baffle 32 realizes the communication or cut-off of the corresponding cavity section, so as to select the area of the air curtain formed according to the actual needs.

[0047] Further, the above-mentioned air inlet 11 is arranged at the top end of one of the first outlet cavity sections 15, that is, the air inlet 11 is arranged at the position communicating with the first outlet cavity section 15 provided with the air curtain fan. Thus, when the air curtain fan is started, the air flow introduced by the air inlet 11 can be directly introduced into the corresponding first outlet cavity section 15, reducing the air flow introduction path, so that the air speed is faster.

[0048] Further, in the embodiment, the air curtain opening includes a plurality of air curtain holes 13, which are arranged at the bottom end of the range hood shell 10 and distributed on both sides of the oil fume suction opening. That is, the air flow guided through the air curtain cavity can be uniformly dispersed through the plurality of air curtain holes 13, so that the air flow forming the air curtain is uniform and stable, and the air curtain structure formed is relatively stable, and the air flow is not locally concentrated and disordered.

[0049] Specifically, the above-mentioned air curtain hole 13 can be selected as a strip-shaped hole. When the air flow is blown out of the plurality of strip-shaped holes, due to the flow characteristics of the air, a continuous air flow barrier is formed in front of the strip-shaped hole, so that the air flow in a certain area has consistency and continuity, which can better play the role of blocking and isolating.

[0050] Further, the above-mentioned oil fume suction opening includes a plurality of oil fume suction holes, which are arranged in the length direction and the width direction of the range hood shell 10. The plurality of oil fume suction holes are used to suck the oil fume into the oil fume cavity 14, so that the oil fume suction surface is larger and the oil fume adsorption effect is better.

[0051] Further, the top end of the range hood shell 10 is provided with a smoke outlet channel, which penetrates the top end of the oil fume cavity 14. The smoke outlet channel is provided with an oil fume fan 20. The smoke outlet channel directly penetrates the independent oil fume cavity 14, and the suction force formed in the oil fume fan 20 can directly suck out the oil fume, forming a larger suction force, so that the oil fume suction effect is better.

[0052] Further, the bottom end of the range hood shell 10 is provided with an upwardly recessed oil fume recess 18, so that the peripheral wall of the oil fume recess 18 protrudes from the bottom wall of the cavity, the partition plate 30 is arranged at the top end of the peripheral wall of the oil fume recess 18 and abuts against the top wall of the cavity, and the oil fume port is arranged at the bottom wall of the oil fume recess. In this way, when oil fume is being sucked, the oil fume can be concentrated in the oil fume recess, and the oil fume port at the bottom wall of the oil fume recess enters the oil fume cavity, so that the position of the oil fume port at the bottom end of the range hood shell 10 is higher than that of the air curtain port, that is, the oil fume port and the air curtain port are not in the same plane, so that the oil fume entering the oil fume port can be blocked by the inner peripheral wall of the oil fume recess, reducing the adhesion of the oil fume to the air curtain port.

[0053] The technical means disclosed in the utility model scheme is not only limited to the technical means disclosed in the above-mentioned embodiments, but also includes the technical scheme composed of any combination of the above technical features. It should be noted that, for ordinary skilled persons in the art, without departing from the principles of the utility model, a number of improvements and refinements can be made, and these improvements and refinements are also considered to be within the protection scope of the utility model.

Claims

1. A twin ducter, air-curtain range hood, characterized in that, The application relates to a range hood, which comprises the following parts. The range hood shell is provided with an oil fume suction port, a wind curtain port and an air inlet at the bottom end. A cavity is arranged in the range hood shell, and a partition plate is arranged in the cavity. The wind curtain fan is arranged in the wind curtain cavity and is used for guiding airflow to enter the wind curtain cavity through the air inlet and guiding airflow in the wind curtain cavity to exit through the wind curtain port to form a wind curtain.

2. The dual ducter, air-curtain range hood according to claim 1, characterized in that, The wind curtain cavity section comprises two first outlet cavity sections and a communication cavity section.

3. The dual ducter, air-curtain range hood according to claim 2, characterized in that, The first outlet cavity section and the communication cavity section are connected by a guide slope.

4. The dual ducter, air-curtain range hood according to claim 2, characterized in that, The wind curtain cavity section further comprises a second outlet cavity section.

5. The dual ducter, air-curtain range hood according to claim 2, wherein, A baffle and a baffle driving element are arranged between the communication cavity section and one of the first outlet cavity sections.

6. The dual ducter, air-curtain range hood according to claim 2, wherein, The baffle is rotatably connected to the partition plate.

7. The twin ducter, air-curtain, hood as claimed in any one of the claims 1 to 6, wherein, The baffle driving element is used for rotating the baffle to block or open the communication cavity section.

8. The twin ducter, air-curtain, hood as claimed in any one of the claims 1 to 6 wherein, The air inlet is arranged at the top end of the first outlet cavity section.

9. The twin ducter, air-curtain, hood as claimed in any one of the claims 1 to 6 wherein, The wind curtain port comprises a plurality of wind curtain holes.

10. The twin ducter, air-curtain, hood as claimed in any one of the claims 1 to 6 wherein, The oil fume suction port comprises a plurality of oil fume suction holes. The range hood shell is provided with a smoke outlet channel at the top end. The smoke outlet channel is in communication with the top end of the oil fume cavity. An oil fume fan is arranged in the smoke outlet channel. The bottom end of the range hood shell is provided with an oil fume groove which is concave upward. The circumferential wall of the oil fume groove protrudes from the bottom wall of the cavity. The partition plate is arranged at the top end of the circumferential wall of the oil fume groove and abuts against the top wall of the cavity. The oil fume port is arranged at the bottom wall of the oil fume groove.

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