An air curtain range hood

A technology for range hoods and air curtains, which is applied in the direction of removing oil fumes, household stoves/stoves, heating methods, etc., which can solve problems such as user discomfort and achieve the effect of reducing the shielding effect

Active Publication Date: 2021-07-09
QINGDAO HAIER WISDOM KITCHEN APPLIANCE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, how to reasonably control the effective distance of the air curtain airflow to avoid the ineffective air curtain from affecting the rise of oil fume or causing discomfort to users has become an urgent problem to be solved

Method used

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  • An air curtain range hood
  • An air curtain range hood
  • An air curtain range hood

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] In the air curtain range hood in this embodiment, the flow direction of the at least two air curtains at the beginning of the air curtain airflow is parallel or at a certain angle, and the angle is less than 15°. The technical solution in this embodiment requires that the two air curtains maintain the same direction at least at their starting ends. Preferably, the airflow directions of the first air curtain and the second air curtain are arranged symmetrically with the vertical direction at least at their starting ends.

[0054] The flow direction of the air curtain airflow at its starting end can be adjusted by the deflection angle of the air deflector at the air outlet of the air curtain range hood. When the equipment is in a stable state of use, try to keep the airflow of at least two air curtains in a parallel state. Since the flow velocity of the two air curtains is different at the same height position, that is, at a certain height position, the airflow velocity ...

Embodiment 2

[0057] The difference between the air curtain range hood described in this embodiment and the above embodiment is that: the effective distance of shielding the air flow of the air curtain refers to the attenuation of the airflow intensity / airflow velocity / air flow rate of the shielding air curtain to the distance from the shielding airflow of the air curtain When 30% to 70% of the corresponding amount at the beginning end, the distance that the airflow of the shielding air curtain flows. The air flow distance of the shielding air curtain is the distance along the vertical direction, or the projection of the actual movement track in the vertical direction. The size of the effective distance for shielding the airflow of the air curtain depends on the operating environment of the air curtain range hood. When the phenomenon of oil fume diffusion is likely to occur in the operating environment, the shielding effect of the air curtain should be strengthened to extend the effective di...

Embodiment 3

[0060] Such as image 3 As shown, the difference between the air curtain range hood described in this embodiment and the above embodiment is that: the position of the beginning of the air curtain includes the relative height of the beginning of the air flow of the at least two air curtains and / or the height of each air curtain. The relative distance between the air outlets. Since the two air curtains with different flow rates at the same relative height have a certain distance between the positions of the respective air outlets (corresponding to the beginnings of the airflows of the respective air curtains). With the flow of the two air streams and the divergence of the air stream along the flow direction to a certain extent, the two air curtain air streams converge. The two air curtain airflows begin to diverge obviously from the position of intersection (the end of the effective distance for shielding air curtain airflow). When the distance between the two air curtains is s...

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PUM

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Abstract

The invention discloses an air curtain range hood, which comprises an air curtain device for generating a shielding air curtain, and the shielding air curtain includes a first air curtain and a second air curtain; The first air outlet of the curtain and the second air outlet for generating the second air curtain, the first air curtain and the second air curtain have different airflow speeds at the same height. The air curtain range hood introduced by the invention adjusts the effective distance of shielding the airflow of the air curtain through the interaction between at least two parts with different moving speeds.

Description

technical field [0001] The invention belongs to the field of kitchen air purification equipment, and in particular relates to an air curtain range hood. Background technique [0002] In the air curtain range hood in the prior art, an air curtain is arranged between the user and the pot and the stove to isolate the user from the oil fume. However, after the oil fume is generated near the mouth of the pot, the temperature is higher, and the components of oil and water are in a gaseous state, which is lower than the air density in the surrounding environment, and its upward trend is also very obvious. There is no need for an air curtain to shield the oil fume within a distance. In addition, the vertically downward air curtain air flow at this position drives the air at the mouth of the pot to flow downward, causing the air pressure at the mouth of the pot to decrease, which affects the upward diffusion of oil fume. The kitchen environment is limited, and the space at the stov...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24C15/20
CPCF24C15/2021F24C15/2028
Inventor 孟永哲艾希顺张智盖其高
Owner QINGDAO HAIER WISDOM KITCHEN APPLIANCE CO LTD
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