TWI789237B - Fan housing of kitchen ventilator with a wind guide structure - Google Patents

Abstract

A fan housing of kitchen ventilator with a wind guide structure, which includes a housing having a receiving space, a wind inlet in communication with the receiving space and a wind outlet in communication with the receiving space, a wind guiding cover disposed at the wind outlet and provided with a wind guiding passage in communication with the receiving space, and a wind guide partition disposed at the wind guiding passage and divides a guide inlet into two parts, so that the lampblack drawn from the wind is divided into two parts by the wind guide partition, which can reduce the turbulence generated by the lampblack through the wind guide passage, so as to increase the stability of the lampblack flow, improving the flow rate and the smoke exhaust effect.

Description

Range hood wind stomach with air guiding structure

The invention relates to a range hood, in particular to a range hood with an air guiding structure.

The range hood is installed above the stove, which can quickly take away the exhaust gas and discharge it outside, so as to reduce the harm caused by the exhaust gas to human health. As shown in Figure 1, the range hood mainly uses the fan motor 12 in the wind stomach housing 11 to suck the oil fume through the air inlet 111, and then discharges it through the air guide outlet 113 on the top 112 of the wind stomach housing 11, so as to reduce the oil fume from being trapped. Inhaled into the body.

However, due to the structural design of the top 112 of the wind mast housing 11, when the fan motor 12 draws the oil fumes and flows through the top 112 of the wind mast housing 11, it will not only generate turbulent flow, reduce the flow velocity, and cause smoke exhaust Defects with poor effects will cause resonance and noise. Similarly, refer to the Republic of China Announcement No. 584198 Patent for Invention "The Wind Stomach Structure of the Inclined Range Hood", the Republic of China Announcement No. 356920 New Patent "Low Noise Wind Stomach Structure for the Range Hood", or the Republic of China Announcement No. M422653 New Patent Whether the design of the wind stomach in "the wind stomach with an inclined angle of the range hood" is a single wind stomach design or a double wind stomach design will cause the above-mentioned defects.

The purpose of the present invention is to provide a range hood fan with an air guide structure, which mainly improves the smoke exhaust effect.

Another object of the present invention is to provide a range hood with an air guide structure, which mainly reduces the noise generated during resonance.

In order to achieve the above-mentioned purpose, the present invention is a range hood wind stomach with an air guiding structure, comprising: a wind stomach housing with an accommodating space, an air inlet communicating with the accommodating space, and an air inlet connected to the accommodating space. An air outlet communicating with the space; an air guide cover is assembled at the air outlet of the wind stomach housing, and has an air guide channel communicating with the accommodating space, and the air guide channel has a guide adjacent to the air outlet An air inlet, an air guide outlet opposite to the air guide inlet; and an air guide partition, which are assembled in the air guide channel of the air guide hood, and divide the air guide inlet into two.

The effect of the present invention is that: the present invention mainly sets an air guide baffle in the air guide passage of the air guide hood, so that the oil fume extracted from the air outlet of the wind stomach housing is divided into two by the air guide baffle, thereby The turbulent flow generated by the oil fume passing through the air guide channel is reduced to increase the stability of the oil fume flow, thereby increasing the flow rate and improving the smoke exhaust effect. On the other hand, the air guide baffle installed in the air guide channel can increase the contact area through which oil fume passes, so as to reduce the resonance of noise, and at the same time effectively avoid the elimination of resonance and abnormal sound, and reduce the noise generated during resonance.

Preferably, the wind stomach casing further has a convex portion located in the accommodating space to form a constriction between the air inlet and the air outlet, and the air guide partition has a set of a first side edge in the air guide channel, a set of second side edges opposite to the first side edge arranged in the air guide channel, and a first end edge connecting the first and second side edges , and a second end edge opposite to the first end edge, the direction passing through the first and second end edges is a longitudinal direction, and the longitudinal direction passes through the top edge of the protrusion.

Preferably, the diameter of the constriction of the bellows housing is smaller than the diameter of the air outlet.

Preferably, there is a distance between the second end edge of the wind guiding partition and the top edge of the protrusion.

Preferably, the air guide channel of the air guide cover has a tapered air guide section adjacent to the air guide inlet, and an equal-diameter air guide section connected to the tapered air guide section and adjacent to the air guide outlet, the The air guiding baffle group is arranged on the tapered air guiding section of the air guiding hood.

Preferably, the air guide inlet of the air guide cover is rectangular.

Preferably, the air guide outlet of the air guide cover is circular.

Please refer to Figures 2 to 4, the embodiment of the present invention provides a range hood fan stomach with a wind guide structure, which is mainly composed of a fan stomach housing 20, a wind guide cover 30 and an air guide partition 40, wherein: the wind stomach housing 20 has an accommodating space 21, an air inlet 22 communicating with the accommodating space 21 and located on both sides of the accommodating space 21, and an accommodating space 21 The air outlet 23 communicates with and is located above the accommodating space 21; in this embodiment, the accommodating space 21 is provided with a fan motor 50, so as to suck oily fumes from the air inlet 22 and pass through the accommodating space 21, and then be discharged from the air outlet 23 , in addition, the wind stomach housing 20 further has a convex portion 24 located in the accommodating space 21 to form a constriction 25 between the air inlet 22 and the air outlet 23, and the diameter of the constriction 25 Smaller than the diameter of the air outlet 23.

The wind guide cover 30 is assembled on the air outlet 23 of the wind stomach housing 20, and has an air guide channel 31 communicating with the accommodating space 21, and the air guide channel 31 has an adjacent to the air outlet 23 and has a Rectangular air guide inlet 311, and a circular air guide outlet 312 opposite to the air guide inlet 311; in this embodiment, the air guide channel 31 of the air guide cover 30 has a Tapering air guiding section 313, and an equal-diameter air guiding section 314 connected to the tapering air guiding section 313 and adjacent to the air guiding outlet 312; the tapering air guiding section 313 is from the air guiding inlet 311 to the air guiding outlet 312 direction gradually tapers.

The air guide partition 40 is assembled on the tapered air guide section 313 of the air guide channel 31 of the air guide cover 30, and divides the air guide inlet 311 into two; in this embodiment, the air guide partition 40 has a set of first side edges 41 set in the air guide channel 31, a set of second side edges 42 set in the air guide channel 31 and opposite to the first side edges 41, and a second side edge 42 connected to the first side edge 41. 1. A first end edge 43 between the two side edges 41, 42 and a distance from the equal-diameter air guide section 314, and a second end edge 44 opposite to the first end edge 43, the second The end edge 44 is adjacent to the air guide inlet 311 of the air guide cover 30 and has a distance from the top edge 241 of the convex portion 24, so that the direction passing through the first and second end edges 43, 44 is a longitudinal direction L, and the longitudinal direction L It passes through the top edge 241 of the convex portion 24 of the bellows housing 20 .

The above is the description of the configuration of each main component of the embodiment of the present invention. As for the operation mode and effect of the present invention, the description is as follows: Referring to FIG. There is an air guide partition 40, so that the oil fume (as shown by the arrow) extracted from the air outlet 23 of the wind stomach housing 20 is divided into two by the air guide partition 40, and the setting of the air guide partition 40 The direction (that is, the longitudinal direction L) is through the top edge 241 of the convex portion 24 of the wind stomach housing 20, so the oil fumes are sucked in by the air inlet 22 of the wind stomach housing 20, and flow through the constriction 25 to be released from the air outlet. When 23 is discharged, the oil fume will be divided into two by the air guide partition 40 and pass through the air guide channel 31 of the air guide cover 30. Accordingly, the oil fume is reduced by the design of the air guide partition 40 and the oil fume passes through the air guide channel 31. The turbulent flow generated increases the stability of the oil fume flow, thereby increasing the flow rate and improving the smoke exhaust effect.

At the same time, because the design of the present invention can increase the flow rate at which the oil fume is drawn away, it can shorten the time for the oil fume to stay in the wind stomach housing 20 and the wind guide cover 30, thereby reducing the oil in the oil fume from adhering to the wind stomach housing. 20. The inner wall surface of the wind guide cover 30 effectively maintains the smoke exhaust performance of the range hood. In addition, the present invention increases the length of the exhaust pipeline (not shown in the figure) externally connected to the air guide outlet 312 of the air guide cover 30 by increasing the flow rate at which the oil fume is drawn away, and can also reduce the oil in the oil fume adhering to the air. The inner wall surface of the exhaust pipeline is conducive to the selectivity of the range hood in the installation position.

On the other hand, the air guide baffle 40 provided in the air guide channel 31 can increase the contact area through which oil fume passes, so as to reduce the resonance of noise, effectively avoid the elimination of resonance and abnormal sound, and reduce the noise generated during resonance.

It is worth noting that, since the design of the air guide channel 31 of the air guide cover 30 is particularly divided into a tapered air guide section 313 adjacent to the air guide inlet 311, and a tapered air guide section 313 connected to the air guide section 313 and adjacent to the air guide The equal-diameter air guide section 314 of the outlet 312, therefore, when the oil fume flows through the air guide channel 31 of the air guide cover 30, in addition to dividing the oil fume into two by the setting of the air guide partition 40, it is also The tapered air guide section 313 with smaller and smaller flow channel diameters compresses the caliber through which the oil fume passes, so that the pressure of the oil fume passing through the equal diameter air guide section 314 is greater than the pressure when flowing through the tapered air guide section 313, so as to increase the wind pressure And effectively increase the flow rate at which the oil fume is extracted.

11: wind stomach shell 111: air inlet 112: top 113: Air guide outlet 12: Fan motor 20: wind stomach shell 21:Accommodating space 22: Air inlet 23: Air outlet 24: convex part 241: top edge 25: necking 30: Wind hood 31: Air guide channel 311: Air guide inlet 312: Air guide outlet 313: tapered wind guide section 314: Equal diameter air guide section 40: wind guide partition 41: First side edge 42: Second side edge 43: first edge 44: second end edge L: Vertical 50: Fan motor

Fig. 1 is a schematic cross-sectional view of a conventional range hood; Fig. 2 is a perspective view of an embodiment of the present invention, showing the three-dimensional state of the air guide cover; Fig. 3 is a schematic cross-sectional view of an embodiment of the present invention; Figure 5 is a schematic diagram of the action of the embodiment of the present invention.

20: wind stomach shell

21:Accommodating space

22: Air inlet

23: Air outlet

24: convex part

241: top edge

25: necking

30: Wind hood

31: Air guide channel

311: Air guide inlet

312: Air guide outlet

313: tapered wind guide section

314: Equal diameter air guide section

40: wind guide partition

41: First side edge

43: first edge

44: second end edge

L: Vertical

50: Fan motor

Claims (7)

A range hood wind stomach with an air guide structure, comprising: a wind stomach casing, having a housing space, an air inlet communicating with the housing space, and an air outlet communicating with the housing space; The air guide cover is assembled at the air outlet of the wind stomach housing, and has an air guide channel communicating with the accommodating space, and the air guide channel has an air guide inlet adjacent to the air outlet and an air guide channel opposite to the air guide An air guide outlet of the air guide inlet; and an air guide partition, which is assembled in the air guide channel of the air guide hood, and divides the air guide inlet into two; The convex portion placed in the space to form a constriction between the air inlet and the air outlet, the air guide partition has a set of first side edges arranged in the air guide channel, a set of A second side edge opposite to the first side edge in the air channel, a first end edge connecting the first and two side edges, and a second end edge opposite to the first end edge , let the direction passing through the first and second end edges be a longitudinal direction, and the longitudinal direction passes through the protrusion. According to claim 1, the range hood has an air guiding structure, wherein the longitudinal direction of the air guiding partition passes through the top edge of the protrusion. According to claim 1, the range hood with an air-guiding structure has a wind stomach, wherein the diameter of the constriction of the wind stomach housing is smaller than the diameter of the air outlet. According to claim 2, the range hood has a wind guide structure, wherein the second end edge of the air guide partition is a distance away from the top edge of the protrusion. The range hood fan stomach with air guide structure as described in Claim 1, wherein the air guide channel of the air guide hood has a tapered air guide section adjacent to the air guide inlet, and a tapered air guide section connected And adjacent to the equal-diameter air guide section of the air guide outlet, the air guide partition is set on the tapered air guide section of the air guide hood. According to claim 1, the range hood has an air guide structure, wherein the air guide inlet of the air guide cover is rectangular. According to claim 1, the range hood has a wind guide structure, wherein the air guide outlet of the air guide cover is circular.

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