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Secondary extraction range hood

A technology of secondary ejection and range hood, which is applied in the direction of removing oil fume, household stove/stove, heating method, etc., can solve the problems of waste of suction, deviation of the setting of oil fume suction port, and changing the shape of the blade, so as to simplify the power structure and improve the Ejection effect, effect of improving stability

Active Publication Date: 2021-04-16
林庆森
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current grease separation parts (such as filters) of range hoods are all arranged on the surface, and are single-layered, with small holes and small gaps, which greatly reduces the cross-sectional area of ​​the oil fume suction port and directly reduces the fan. The effect of negative pressure (suction) is also easy to form blockage, and the grease separation effect is extremely poor, which leads to grease accumulation on the blades or impellers in the fan despite the grease separation, and excessive adhesion will cause the motor to overload Problems with weight and changing leaf morphology
[0004] At present, the range hoods on the market still have the problem that the setting of the oil fume suction port deviates from the oil fume source and the suction port of the scattered part causes a large waste of suction.
The applicant's patents of "An Extendable Arm Collection and Suction Range Hood" (ZL201720636527.2) and "An Outreach Arm Collection and Injection Type Range Hood" patent (ZL201720636531.9) disclose two kinds of solutions for the range hood The suction port is generally set away from the oil fume source and other technical solutions that cause a large problem of suction waste. However, the two technical solutions do not involve the grease separation technology and do not give the built-in space and structure of the grease separator, and do not involve the ejection device and the built-in The matching of the grease separator and the necessary changes in its function and structure have not yet involved the solution of the grease storage and discharge of the downdraft range hood

Method used

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  • Secondary extraction range hood
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Embodiment 1, the secondary ejection that is formed by a blower fan, as figure 1 , 2 and 3.

[0041] The secondary ejection range hood of the present invention includes a primary ejection fan 1, an ejection outer air cylinder 4 with hollow openings at both ends of the upper and lower ends, and a secondary ejection air cylinder 5 with hollow interiors at the upper and lower ends. The barrel 5 is arranged at the inner central position of the ejecting outer air barrel 4 .

[0042] There is a flue gas outlet 201 behind the lower side of the flue multi-pass body 2, a flue gas inlet is opened at the front position, and an ejection air inlet 203 is provided on the upper side, and the upper part of the ejection outer air cylinder 4 is connected to the flue multi-pass body 2 The flue gas outlet 201 of the flue gas outlet 203 is connected to the flaring pipe 204 with the flaring facing upwards, and the lower end of the flaring pipe 204 is a round pipe 205, and the round pipe 205 ...

Embodiment 2

[0059] Embodiment 2, secondary ejection formed by two fans

[0060] Compared with Example 1, the different structure lies in that the secondary ejection range hood of the present invention includes a primary induction fan 1 , a secondary ejection fan and an ejection outer air cylinder 4 . The primary induced draft fan 1 and the secondary induced draft fan are fans in different positions. The specific structure is that the primary injection fan is arranged in the fan housing 103, the lower part of the fan housing 103 is connected to the top edge of the flaring pipe 204, and the side and the top of the fan housing 103 are provided with water vapor inlets 104. Fan housing 103 bottom links to each other with flaring pipe 204, and flaring pipe 204 is arranged on the ejection air inlet 203 on the upper side of flue multi-pass body 2, and primary air-inducing fan 1 blows toward the flaring pipe 204.

[0061] The upper part of the injection outer air cylinder 4 is connected to the sm...

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Abstract

The invention relates to the technical field of range hoods, in particular to a range hood with secondary injection. The technical solution adopted in the present invention is: comprising a primary ejector fan, a secondary ejector fan, an ejector outer air cylinder and a flue multi-pass body, the lower side of the flue multi-pass body is provided with a flue gas outlet and a flue gas inlet, and the upper side There is an ejection air inlet on the side, and the upper part of the ejection outer air cylinder is connected to the flue gas outlet of the flue multi-body, and the secondary ejection fan of the secondary ejection fan is set at the position in the backward reflection plane of the smoke exhaust horizontal pipe. The air outlet of the air ejector, the air outlet of the second ejector fan faces the smoke exhaust horizontal pipe, the primary ejector blows the air to the flaring pipe and enters the outer ejector along the round pipe, and the outlet of the second ejector fan The induced air is blown to the smoke exhaust horizontal pipe through the secondary extraction air duct. The present invention increases the secondary ejection to avoid the drop of the elastic gate resistance to the final ejection force, thereby avoiding the situation that the suction force of the oil fume suction port becomes smaller, and sets the bottom secondary ejection fan to improve the ejection effect.

Description

technical field [0001] The invention relates to the technical field of range hoods, in particular to a range hood with secondary injection. Background technique [0002] During the implementation of the applicant's patent "An Extended-Arm Collective Suction-Injection Type Range Hood" (ZL201720636531.9), when the range hood must be equipped with an elastic gate for the anti-backflow pipe, the suction force of the range hood becomes smaller. The reason is that after one shot is completed in the vertical tube, it turns 90° to the horizontal tube, and then when it encounters the resistance of the elastic gate of the anti-downdraft pipe in the horizontal tube, its ejection force will inevitably drop, which leads to When the suction force of the oil fume suction port becomes smaller. [0003] At present, the range hoods available in the market, no matter they are top suction, down suction or side suction, generally have the problem of severe oil accumulation on many parts of the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24C15/20
CPCF24C15/20
Inventor 林庆森
Owner 林庆森