CN110836402B - Air curtain range hood - Google Patents
Air curtain range hood Download PDFInfo
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- CN110836402B CN110836402B CN201810942019.6A CN201810942019A CN110836402B CN 110836402 B CN110836402 B CN 110836402B CN 201810942019 A CN201810942019 A CN 201810942019A CN 110836402 B CN110836402 B CN 110836402B
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- range hood
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- 239000000779 smoke Substances 0.000 claims abstract description 24
- 230000000903 blocking effect Effects 0.000 claims description 101
- 239000003517 fume Substances 0.000 claims description 11
- 230000002441 reversible effect Effects 0.000 claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 2
- 230000002238 attenuated effect Effects 0.000 claims description 2
- 238000010411 cooking Methods 0.000 description 15
- 230000000694 effects Effects 0.000 description 5
- 230000002829 reductive effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000006233 lamp black Substances 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 206010020751 Hypersensitivity Diseases 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000004887 air purification Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2028—Removing cooking fumes using an air curtain
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ventilation (AREA)
Abstract
The invention discloses an air curtain range hood, which comprises an air curtain device, wherein the air curtain device is at least used for generating a shielding air curtain for shielding oil smoke; the relative distance between at least part of the air outlet of the air curtain device and the air suction opening of the air curtain range hood is adjustable. The relative position relation between at least part of the air outlet and the air suction opening of the air curtain device of the air curtain range hood introduced by the invention is adjustable, so that the adjustment of the effective distance for shielding the air curtain airflow is realized.
Description
Technical Field
The invention belongs to the field of kitchen air purification equipment, and particularly relates to an air curtain range hood.
Background
In the air curtain range hood in the prior art, an air curtain is arranged between a user and a pot and between the user and a cooking bench to isolate the user from oil smoke. However, the temperature of the oil fume is higher after the oil fume is generated at a position close to the pot opening, the components of the oil and the water are in a gaseous state, the density of the oil fume and the water is lower than that of air in the surrounding environment, the rising trend of the oil fume and the water is very obvious, and the oil fume is shielded without an air curtain within a certain distance close to the pot opening. In addition, the air curtain airflow at the position downward relative to the vertical direction drives the air at the pot opening position to flow downward, so that the air pressure at the pot opening position is reduced, and the upward diffusion of the oil smoke is influenced. The kitchen environment is limited, the space of the cooking bench is more limited, and the air flowing phenomenon around the kitchen environment caused by the air curtain can influence the gas environment in the working area (above the cooking bench) of the range hood to different degrees. Therefore, the working effect of the range hood can be influenced by the overlarge action range of the air curtain airflow in the vertical direction. Furthermore, in the cooking process, the hands and arms of the user mostly act near the cooking bench or near the pot opening, and the large part of the air curtain flow inevitably blows on the hands and arms of the user, so that the user is uncomfortable. Particularly, some users are sensitive to airflow, and the skin temperature environment and the airflow environment in the vicinity of the same area cause allergic reactions. Therefore, how to reasonably control the effective distance of the air curtain airflow and avoid the problem that the invalid air curtain influences the oil smoke to rise or causes discomfort of a user becomes urgent to be solved. The present invention has been made in view of this situation.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an air curtain range hood, wherein the relative position relationship between at least part of an air outlet and an air suction opening of an air curtain device is adjustable, so that the adjustment of the effective distance for shielding air curtain airflow is realized.
In order to solve the technical problems, the invention adopts the technical scheme that:
an air curtain range hood comprises an air curtain device, wherein the air curtain device is at least used for generating a shielding air curtain for shielding oil smoke; the relative distance between at least part of the air outlet of the air curtain device and the air suction opening of the air curtain range hood is adjustable.
The invention is further configured to: the air curtain device comprises a shielding air curtain unit for generating a shielding air curtain and a blocking air curtain unit for generating a blocking air curtain, wherein the blocking air curtain and the shielding air curtain are intersected in the movement direction of the blocking air curtain;
preferably, the air curtain range hood adjusts the effective distance of shielding air curtain airflow by controlling the crossed position of the air curtain range hood and the air curtain range hood;
preferably, the relative distance between at least part of the air outlet of the shielding air curtain unit and/or the air outlet of the blocking air curtain unit and the air suction opening of the air curtain range hood is adjustable.
The invention is further configured to: an included angle is formed between the direction of the air flow of the blocking air curtain and the direction of the air suction opening;
preferably, the method of blocking the flow of the air curtain includes: blocking the airflow direction at the starting end of the air curtain/blocking the direction pointed by the central axis of the air curtain;
preferably, the included angle ranges from 0 ° to 70 °.
Preferably, the distance between the shielding air curtain air outlet and the intersection position of the blocking air curtain and the shielding air curtain is the effective distance of the shielding air curtain airflow.
The invention is further configured to: the effective distance of the shielding air curtain is as follows: the shielding air curtain airflow flowing distance is reduced when the airflow intensity/airflow speed/airflow quantity of the shielding air curtain is reduced to 30% -70% of the corresponding initial quantity of the starting end of the shielding air curtain.
The invention is further configured to: the air curtain device comprises a body and an air outlet arranged on the body, and the air outlet is connected with the body through a sliding connection assembly;
preferably, the air outlet of the air curtain device comprises an air outlet of the shielding air curtain unit and/or an air outlet of the blocking air curtain unit.
The invention is further configured to: the air curtain range hood comprises a shell forming the external outline of the air curtain range hood, and an air outlet of the air curtain device is connected with the shell through a sliding connection assembly;
preferably, the air outlet of the air curtain device comprises an air outlet of the shielding air curtain unit and/or an air outlet of the blocking air curtain unit.
The invention is further configured to: the sliding connection direction of the sliding connection assembly at least comprises the direction/the reverse direction from the air outlet to the air suction inlet;
preferably, the direction/reverse direction of the air outlet pointing to the air suction opening is the front/rear direction of the air curtain range hood when the air curtain range hood is in a use state.
The invention is further configured to: the sliding connection assembly comprises a sliding card/sliding chute arranged on the air outlet and a sliding chute/sliding card arranged at the corresponding position of the shell/body;
preferably, the sliding mode of the sliding connection assembly is controlled by a control system of the air curtain range hood and/or controlled by a user;
preferably, the sliding manner includes: sliding distance and/or sliding direction and/or sliding timing and/or sliding rate;
preferably, the sliding connection assembly is arranged at least along at least one position around the air outlet.
The invention is further configured to: the distance between the starting end of the shielding air curtain and the starting end of the blocking air curtain is a reference distance, and the effective distance of the shielding air curtain airflow is adjusted by controlling the size of the reference distance by the oil fume absorbed by the air curtain;
preferably, the reference distance is a distance between the air outlet of the shielding air curtain unit and the air outlet of the blocking air curtain unit;
preferably, the distance between the first air outlet and the second air outlet in the horizontal direction is a reference distance;
preferably, the air curtain oil fume absorption is through control the air outlet of shielding air curtain unit and/or block the air outlet of air curtain unit with relative distance between the inlet scoop and/or the air outlet of shielding air curtain unit with relative distance adjustment between the inlet scoop the reference distance.
The invention is further configured to: the shielding air curtain unit and the blocking air curtain unit share one air curtain fan;
preferably, the shielding air curtain unit and the blocking air curtain unit are communicated with each other in an air passage.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects.
1. According to the air curtain range hood introduced by the invention, the effective distance of the shielding air curtain airflow generated by the air curtain device is adjustable, and the adjustment mode can be automatically controlled by the range hood or manually adjusted by a user according to the actual condition. The air supply distance (effective distance of air curtain airflow) of the shielding air curtain is only in the range where the oil smoke begins to diffuse, and the air curtain airflow is blocked at the position where the oil smoke cannot diffuse, so that the influence of the air curtain airflow on flames near a pot opening, on a cooking bench and on the body of a user is avoided.
2. According to the air curtain range hood introduced by the invention, at least part of the air outlet of the air curtain device can slide along the area limited by the equipment shell, so that the generation position of the shielding air curtain and the effective air supply distance of the shielding air curtain are adjusted. The air curtain device for absorbing oil smoke by the air curtain comprises a shielding air curtain and a blocking air curtain, wherein the shielding air curtain is used for shielding the oil smoke, and the blocking air curtain is used for controlling the effective distance of air flow of the shielding air curtain. The air flow direction of the blocking air curtain and the air flow direction of the shielding air curtain form a certain angle, so that the blocking air curtain is crossed with the shielding air curtain after flowing to a certain distance, the crossed position of the blocking air curtain and the shielding air curtain serves as a starting point, air flow of the air curtain begins to disperse, and the shielding effect on oil smoke is weakened. By the technical scheme, the adjustment of the relative position of the air outlet of the blocking air curtain unit and/or the air outlet of the shielding air curtain unit can realize the adjustment of the effective airflow distance of the shielding air curtain.
3. The air curtain range hood introduced by the invention not only can adjust the air supply distance of the shielding air curtain, but also can adjust the generation position of the shielding air curtain. The different users have different physiques and different degrees of influence of the air curtain on the users, and the technical scheme introduced by the invention can meet different requirements of different users on the generation position of the shielding air curtain.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic view of a part of the structure of an air curtain range hood in one embodiment of the present invention
FIG. 2 is a schematic view of the structure of the area B shown in FIG. 1 according to an embodiment of the present invention;
FIG. 3 is a schematic view of the structure of the area B shown in FIG. 1 according to another embodiment of the present invention;
FIG. 4 is a schematic view of the structure of the area B shown in FIG. 1 according to another embodiment of the present invention;
FIG. 5 is a schematic view of the structure of area C of FIG. 4 in one embodiment of the present invention;
FIG. 6 is a schematic view of the structure of the area B shown in FIG. 1 according to another embodiment of the present invention;
FIG. 7 is a schematic view of the structure of the area B shown in FIG. 1 according to another embodiment of the present invention;
FIG. 8 is a bottom view of an air curtain range hood in accordance with an embodiment of the present invention;
fig. 9 is a bottom view of an air curtain range hood in another embodiment of the invention.
In the figure: 1. an air curtain device; 11. a shielding air curtain unit; 12. blocking the air curtain unit; 111. shielding an air outlet of the air curtain unit; 1110. shielding the air curtain; 112. blocking an air outlet of the air curtain unit; 1120. blocking the air curtain; 2. a housing; 3. an air inlet of the air curtain range hood; 51. a chute; 52. sliding the card; A. in front of the device.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 9, the air curtain range hood introduced in the present invention includes an air curtain device, wherein the air curtain device is at least used for generating a shielding air curtain for shielding oil smoke; the relative distance between at least part of the air outlet of the air curtain device and the air suction opening 3 of the air curtain range hood is adjustable, and further the effective distance for shielding the air curtain airflow is adjusted. According to the air curtain range hood introduced by the invention, the effective distance of the shielding air curtain airflow generated by the air curtain device is adjustable, and the adjustment mode can be automatically controlled by the range hood or manually adjusted by a user according to the actual condition. The air supply distance (effective distance of air curtain airflow) of the shielding air curtain is only in the range where the oil smoke begins to diffuse, and the air curtain airflow is blocked at the position where the oil smoke cannot diffuse, so that the influence of the air curtain airflow on flames near a pot opening, on a cooking bench and on the body of a user is avoided. When the air curtain device only comprises one air outlet for generating the shielding air curtain, if the airflow direction of the shielding air curtain is constant, the position of the shielding air curtain relative to the oil smoke area above the cooker is different, and the effective distance of the airflow of the shielding air curtain is different. It is understood that the path of upward diffusion of the soot resembles an inverted parabola. If the distance between the air outlet of the air curtain device and the air suction opening is short, and the distance of the oil smoke diffusing to the surrounding environment is short, the shielding air curtain has a good shielding effect on the oil smoke, and the effective distance of the shielding air curtain airflow is long at the moment (along the direction of the shielding air curtain airflow, the distance between the air outlet of the air curtain device and the contact position of the shielding air curtain and the oil smoke). If the air outlet of the air curtain device is far away from the air suction opening, when the distance of the oil smoke diffusing to the surrounding environment is large, the shielding air curtain has a good shielding effect on the oil smoke, and the effective distance of the air flow of the shielding air curtain is small.
Example one
As shown in fig. 1 to fig. 9, in the air curtain range hood of the present embodiment, the air curtain device includes a shielding air curtain unit 111 generating a shielding air curtain 1110, and a blocking air curtain unit 112 generating a blocking air curtain 1120, where the blocking air curtain 1120 and the shielding air curtain 1110 intersect in a movement direction thereof, so as to control an effective distance of an air flow of the shielding air curtain. Since the curtain air flow is only subject to air drag during operation, it can be considered to run approximately straight before encountering other drag. At the crossing position of shielding air curtain and blocking air curtain, the air current of both intersects, and both distances between them (by the directional intersection position of air outlet) reduce gradually in the wind path before both intersect, and in this section of air curtain, because the air current of blocking the air curtain does not join with the air current of shielding air curtain, then its influence that causes the shielding air curtain is limited, and shielding air curtain has good oil smoke shielding effect in this section of wind path. In addition, at least a part of the flow direction of the blocking air curtain and the flow direction of the shielding air curtain at the position are overlapped, so that the blocking air curtain can also play a role in shielding oil smoke. After two air curtain airflows are converged together, the air curtain is blocked to break up the airflow of the shielding air curtain, and meanwhile, the air curtain airflow is blocked to break up, so that the blocking air curtain and the shielding air curtain do not have a good oil smoke shielding function, and the position is the end point of the effective distance of the shielding air curtain airflow. One part of the scattered airflow flows to one side of the user at a weaker flow speed, a more divergent flow direction and a smaller air volume, so that the problem of temperature rise of the space where the user is located due to heat radiation in the cooking process is solved. And the other part of scattered airflow is diffused to the working area of the range hood (above the cooking bench) at a weaker flow speed, a more divergent flow direction and a smaller air volume, so that the reduction of the air pressure of the working area caused by the suction force of the oil fume is compensated, and the extraction efficiency of the range hood is ensured.
Further, in this embodiment, a relative distance between at least a portion of the air outlet 111 of the shielding air curtain unit and/or the air outlet 112 of the blocking air curtain unit and the air suction opening 3 of the air curtain range hood is adjustable. If the blocking air curtain 1120 and the shielding air curtain 1110 respectively have fixed included angles with the vertical direction and the blocking air curtain and the shielding air curtain mutually form a certain angle α, the distance between the intersection position (intersection position) of the two air curtains and the air outlet of the shielding air curtain unit can be adjusted approximately in equal proportion by adjusting the relative position between the air outlet 112 of the blocking air curtain unit and the air outlet 111 of the shielding air curtain, and further the effective distance of the shielding air curtain airflow can be adjusted.
The blocking air curtain unit 12 of fig. 1 to 9 is located between the shielding air curtain unit 11 and the user, which is merely an example, and in actual use, it may be designed such that the shielding air curtain unit is located between the blocking air curtain unit and the user.
Example two
As shown in fig. 1 to 9, the difference between the air curtain range hood of the present embodiment and the above embodiments is: a certain included angle is formed between the air flow direction of the blocking air curtain 1120 and the air suction direction of the air curtain range hood (the vertical upward direction in fig. 1, and correspondingly, the orientation of the air suction inlet is vertical downward). The guarantee blocks that the air curtain can intersect with shielding air curtain after moving certain distance, and then breaks up shielding air curtain in intersection position to the effective distance of control shielding air curtain. Preferably, the direction of the blocking air curtain airflow refers to: the air outlet of the air curtain blocking unit blocks the air flow direction of the air curtain/blocks the pointed direction of the central axis of the air curtain. Preferably, the included angle ranges from 100 ° to 180 °. The shielding air curtain or the blocking air curtain and the vertical included angle can be realized through the structure and the intersection degree of the air guide plate at the air outlet of the air curtain device.
Further, when the technical solution in this embodiment is implemented, preferably, included angles between the blocking air curtain and the shielding air curtain and a vertical direction are kept unchanged, and only a relative position between the air outlet of the blocking air curtain unit and the air outlet of the shielding air curtain unit is adjusted. After an included angle between the direction of blocking the air curtain airflow and the air suction direction of the air curtain range hood is set, the control variable of the air supply distance of the equipment aiming at the shielding air curtain is only the relative distance between the air outlets of the two air curtain devices.
Further, in the air curtain range hood of the present embodiment, a distance between a horizontal plane where the shielding air curtain air outlet is located and an intersection position of the blocking air curtain and the shielding air curtain is an effective distance of the shielding air curtain airflow. Alternatively, the effective distance of the shielding air curtain is: the shield air curtain air flow intensity/air flow velocity/air flow volume is attenuated to a distance of 30% to 70% of the shield air curtain air flow at the corresponding initial amount at the air outlet of the shield air curtain unit. The specific data may be determined by the device manufacturer at the time of control programming of the device.
EXAMPLE III
As shown in fig. 1 to 9, the difference between the air curtain range hood of the present embodiment and the above embodiments is: the air curtain range hood comprises a shell 2 forming the outer contour of the air curtain range hood, and an air outlet of the air curtain device is connected with the shell 2 through a sliding connection assembly. The housing 2 encloses a cavity structure for accommodating other components, and at least a part of the air curtain device in this embodiment is located in the cavity enclosed by the housing. At least part of the air outlet of the air curtain device is limited and supported by the shell. The air curtain device comprises an air curtain air duct which provides a working space for the air curtain fan, and an outlet of the air curtain air duct is an air outlet. At least part of the periphery of the air outlet is connected with the shell in a sliding mode. That is, when the relative position of the air outlet of the air curtain device is adjusted, the relative position of the air curtain device and the air curtain duct formed by the air curtain device is not changed, and only the relative position of the air outlet is changed. The air outlet 111 of the shielding air curtain unit in fig. 2 slides to one end of the sliding range close to the air suction opening 3, and the air outlet 112 of the blocking air curtain unit is located in the middle of the sliding range. The air outlet 111 of the shielding air curtain unit in fig. 2 is located in the middle of the sliding range, and blocks the air outlet 112 of the air curtain unit from sliding to the end of the sliding range far away from the air suction opening 3.
Further, the air outlet of the air curtain device in this embodiment includes an air outlet 111 of the shielding air curtain unit and/or an air outlet 112 of the blocking air curtain unit. When the position of the air outlet is adjusted, only the position of the air outlet of the shielding air curtain unit may be adjusted, only the position of the air outlet of the blocking air curtain may be adjusted, and both the positions of the air outlets of the blocking air curtain unit and the shielding air curtain unit may be adjusted. When the position of the air outlet of blocking the air curtain unit and shielding the air curtain unit is adjusted, not only can the effective air supply distance of shielding the air curtain be adjusted, but also the distance between the shielding air curtain and the user can be adjusted. Because the physical constitutions of the users are different, the relative positions of the users, the cooking range and the pot opening are different when cooking operation is carried out, and therefore the distance between the shielding air curtain and the users is adjusted, and the personalized requirements of the users are favorably met.
Example four
As shown in fig. 1 to 9, the difference between the air curtain range hood of the present embodiment and the above embodiments is: the sliding connection direction of the sliding connection assembly at least comprises the direction/the reverse direction of the air outlet pointing to the air suction opening. That is, when the user is in the cooking operation state, the sliding component slides at least in the front direction (a direction shown in the figure) and the rear direction relative to the user, so as to adjust the relative distance between the air outlet and the air suction opening. Or, the air outlet position adjustment direction/sliding direction in the technical scheme in this embodiment may be performed along other directions, or adjusted universally. This adjustment requires the sliding connection assembly to be located at a plurality of corresponding locations on the outlet and the housing. The user/control system can adjust not only the front-rear direction of the air outlet but also the left-right direction of the air outlet.
Further, the sliding connection assembly in this embodiment includes a sliding card 52 respectively disposed on the air outlet and a sliding slot 51 disposed at a corresponding position of the housing 2, so as to realize sliding connection therebetween. The connection mode has simple structure, can ensure the smoothness of the connection position to a greater degree, and lays a foundation for the universal adjustment of the adjustment direction and the adjustment distance. Further, the sliding mode of the sliding connection assembly in this embodiment is controlled by the control system of the air curtain range hood and/or controlled by a user. Preferably, the sliding manner includes: sliding distance and/or sliding direction and/or sliding timing and/or sliding rate. Further preferably, at least a portion of the slide/chute is disposed at least one location around the air outlet. The slide card 52 and the slide groove 51 are always in a state of being at least partially matched and connected, and even if the air outlet slides to a limit position, the slide card 52 cannot be separated from the slide groove 51, so that the air outlet is always connected with the shell.
EXAMPLE five
The difference between the air curtain range hood described in this embodiment and the above embodiments is: the distance between the shielding air curtain unit and the blocking air curtain unit is a reference distance, and the effective distance of shielding air curtain airflow is adjusted by controlling the size of the reference distance according to the oil fume absorbed by the air curtain. At this time, the included angles between the shielding air curtain and the blocking air curtain and the vertical direction are regarded as fixed. If the device/user adjusts the airflow direction of the shielding air curtain and/or the blocking air curtain at the corresponding air outlet during use, the corresponding relationship between the reference distance and the effective distance of the airflow of the shielding air curtain should be reset. When the included angle between the shielding air curtain and the blocking air curtain in the airflow direction of the corresponding air outlet is large, the proportionality coefficient (change rate) between the reference distance and the effective distance of the shielding air curtain airflow is smaller than the proportionality coefficient (change rate) between the reference distance and the effective distance of the shielding air curtain airflow when the included angle between the shielding air curtain and the blocking air curtain in the airflow direction of the corresponding air outlet is small.
Further, the reference distance in this embodiment is a distance between the air outlet of the shielding air curtain unit and the air outlet of the blocking air curtain unit. The distance between the fixed edges of the two air curtain devices along the front-back direction of the equipment and the distance between the central axes of the two air curtain devices along the front-back direction of the equipment can be used as the distance between the fixed edges of the two air curtain devices along the front-back direction of the equipment.
Further, in the present embodiment, the oil fume is absorbed by the air curtain by controlling the relative distance between the air outlet of the shielding air curtain unit and/or the air outlet of the blocking air curtain unit and the air suction opening and/or the relative distance between the air outlet of the shielding air curtain unit and the air suction opening to adjust the reference distance.
EXAMPLE six
As shown in fig. 6 and 7, the difference between the air curtain range hood of the present embodiment and the above embodiments is: the shielding air curtain unit and the blocking air curtain unit in the embodiment share one air curtain fan. That is, two air outlets are respectively arranged on one air curtain device, the two air outlets are respectively a shielding air curtain air outlet (the air outlet 111 of the shielding air curtain unit) and a blocking air curtain air outlet (the air outlet 112 of the blocking air curtain unit), and the shielding air curtain unit is communicated with an air path inside the blocking air curtain unit.
Further, as shown in fig. 8 and 9, at least a portion of the outlet 112 of the blocking air curtain unit and/or the outlet 111 of the shielding air curtain unit in this embodiment is in a shape of a strip-shaped hole, and a dimension of the outlet of the blocking air curtain unit along a length direction (a left-right direction in fig. 8) thereof is greater than a dimension of the outlet of the shielding air curtain unit in the direction. When the user is in the cooking operation state, the front oblique upward direction of the user is the range hood, and the air outlet of the blocking air curtain unit is the left-right direction of the user along the length direction of the blocking air curtain unit. In the embodiment, the distance in the length direction of the blocking air curtain (the span direction of the blocking air curtain is limited) is greater than or equal to the distance in the direction of the shielding air curtain, so that the blocking air curtain can be effectively blocked in the direction, and omission is avoided.
Further, the air outlets of the shielding air curtain unit and the blocking air curtain unit in the present embodiment are arranged in parallel along the length direction thereof (with respect to the left and right direction of the user during cooking). The blocking effect of the blocking air curtain on the shielding air curtain at each position is consistent, and the structural design is the simplest design. The projection of the air outlet of the shielding air curtain unit on one side of the air curtain range hood close to the user does not exceed the range of the projection of the air outlet of the blocking air curtain unit on one side of the air curtain range hood close to the user.
EXAMPLE seven
As shown in fig. 4 and 7, the difference between the air curtain range hood of the present embodiment and the above embodiments is: in this embodiment, the blocking air curtain unit 12 is disposed between the shielding air curtain unit 11 and the user, the blocking air curtain unit 12 protrudes from a plane formed by the shielding air curtain unit 11 in a direction (downward direction shown in fig. 7) away from the range hood, and when the air curtain range hood is in a use state, an air outlet of the blocking air curtain unit is disposed relatively below the blocking air curtain unit. Then, the starting point of the outlet air of the two air curtain devices is different at the position corresponding to the air outlet. It can be understood that the directivity of the flow of the air curtain airflow is better at a position relative to the outlet of the air curtain device, the worse the directivity of the flow of the air curtain airflow as the air supply distance increases. The air outlet of the shielding air curtain unit 11 in this embodiment is relatively close to the upper portion of the working area, so as to ensure that the shielding air curtain at this position and the air curtain within a certain distance from this position (not only shielding air curtain, but also blocking air curtain at one side can achieve good shielding effect), while the blocking air curtain unit at the opposite position close to the outside can accelerate the blocking air curtain through the generated shielding air curtain when the air flow of the air curtain has a certain weakening tendency, and the air flow of the shielding air curtain is higher than that of the blocking air curtain at the intersection position of the shielding air curtain and the blocking air curtain, so that the shielding air curtain tends to blow away the blocking air curtain, and the air flow of the blown away air curtain flows toward the upper portion of the cooking bench at a lower flow rate and in a relatively divergent flow direction, and these blown away air flows just supplement the low pressure caused by the oil smoke sucked away by the range hood, the efficiency of the lampblack absorber for absorbing lampblack is not reduced due to the prolonging of time. The direction far away from the range hood in the embodiment is vertical and downward when the range hood is in a working state. Fig. 4 and 7 are only examples, and in practical use, the shielding air curtain unit may be designed to protrude from a plane formed by the blocking air curtain unit in a direction away from the range hood (downward direction shown in fig. 7).
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. An air curtain range hood is characterized by comprising an air curtain device, wherein the air curtain device is at least used for generating a shielding air curtain for shielding oil smoke; the relative distance between at least part of the air outlet of the air curtain device and the air suction opening of the air curtain range hood is adjustable;
the air curtain device comprises a shielding air curtain unit for generating a shielding air curtain and a blocking air curtain unit for generating a blocking air curtain, wherein the blocking air curtain and the shielding air curtain are intersected in the movement direction of the blocking air curtain;
the relative distance between at least part of the air outlet of the shielding air curtain unit and/or the air outlet of the blocking air curtain unit and the air suction inlet of the air curtain range hood is adjustable;
the air curtain range hood adjusts the effective distance of the airflow of the shielding air curtain by controlling the crossed position of the blocking air curtain and the shielding air curtain in the motion direction.
2. The air curtain range hood of claim 1, wherein an included angle is formed between the direction of the blocked air curtain airflow and the direction of the air suction opening;
the blocking of the air curtain flow direction comprises: blocking the airflow direction of the starting end of the air curtain or blocking the direction pointed by the central axis of the air curtain;
the included angle ranges from 0 degree to 70 degrees;
the distance between the shielding air curtain air outlet and the intersection position of the blocking air curtain and the shielding air curtain is the effective distance of the shielding air curtain airflow.
3. The air curtain range hood of claim 1, wherein the effective distance of the shielding air curtain is as follows:
the shielding air curtain airflow intensity or airflow speed or airflow quantity is attenuated to 30% -70% of the corresponding initial quantity of the initial end of the shielding air curtain, and then the shielding air curtain airflow flows.
4. The air curtain range hood of claim 1, wherein the air curtain device comprises a body, the air outlet of the air curtain device is arranged on the body, and the air outlet of the air curtain device is connected with the body through a sliding connection assembly;
the air outlet of the air curtain device comprises an air outlet of the shielding air curtain unit and/or an air outlet of the blocking air curtain unit.
5. The air curtain range hood according to claim 1, wherein the air curtain range hood comprises a housing forming an outer contour thereof, and an air outlet of the air curtain device is connected with the housing through a sliding connection assembly;
the air outlet of the air curtain device comprises an air outlet of the shielding air curtain unit and/or an air outlet of the blocking air curtain unit.
6. The air curtain range hood according to claim 4 or 5, wherein the sliding connection direction of the sliding connection assembly at least comprises a direction from the air outlet of the air curtain device to the air suction opening or a direction opposite to the air outlet;
the direction of the air outlet of the air curtain device pointing to the air suction inlet is the front direction of the air curtain range hood in a use state;
the air outlet of the air curtain device points to the reverse direction of the air suction opening and is the rear direction of the air curtain range hood when the air curtain range hood is in a use state.
7. The air curtain range hood according to claim 4 or 5, wherein the sliding connection assembly comprises a sliding card and a sliding groove, the sliding card is respectively arranged on an air outlet of the air curtain device, and the sliding groove is arranged at a corresponding position of the shell or the body;
or the sliding connection assembly comprises a sliding chute and a sliding card, wherein the sliding chute is respectively arranged on the air outlet of the air curtain device, and the sliding card is arranged at a corresponding position of the shell or the body;
the sliding mode of the sliding connection assembly is controlled by a control system of the air curtain range hood and/or controlled by a user;
the sliding manner includes: sliding distance and/or sliding direction and/or sliding timing and/or sliding rate.
8. The air curtain range hood of claim 1, wherein the distance between the starting end of the shielding air curtain and the starting end of the blocking air curtain is a reference distance, and the effective distance of the airflow of the shielding air curtain is adjusted by controlling the size of the reference distance;
the reference distance is the distance between the air outlet of the shielding air curtain unit and the air outlet of the blocking air curtain unit;
the air curtain oil fume absorption is controlled to shield the air outlet of the air curtain unit and/or block the air outlet of the air curtain unit and the relative distance between the air suction ports.
9. The air curtain range hood of claim 1, wherein the shielding air curtain unit and the blocking air curtain unit share one air curtain fan;
the shielding air curtain unit is communicated with the air path inside the blocking air curtain unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810942019.6A CN110836402B (en) | 2018-08-17 | 2018-08-17 | Air curtain range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810942019.6A CN110836402B (en) | 2018-08-17 | 2018-08-17 | Air curtain range hood |
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| Publication Number | Publication Date |
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| CN110836402A CN110836402A (en) | 2020-02-25 |
| CN110836402B true CN110836402B (en) | 2021-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810942019.6A Active CN110836402B (en) | 2018-08-17 | 2018-08-17 | Air curtain range hood |
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| JP2018044723A (en) * | 2016-09-15 | 2018-03-22 | 三菱電機株式会社 | Range hood fan |
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| CN1530596A (en) * | 2003-03-13 | 2004-09-22 | 富士电机零售设备系统株式会社 | Opening showcases |
| CN201072180Y (en) * | 2007-08-07 | 2008-06-11 | 浙江朗迪集团股份有限公司 | Air curtain generating device of ventilator |
| CN201652554U (en) * | 2010-04-22 | 2010-11-24 | 胡兴龙 | Novel range hood |
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| Publication number | Publication date |
|---|---|
| CN110836402A (en) | 2020-02-25 |
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