CN215062274U - Air guide assembly and smoke extractor - Google Patents

Abstract

The utility model relates to an air water conservancy diversion subassembly and smoke extractor, it is provided with the second water conservancy diversion face of first water conservancy diversion face and slope to set up the slope through the positive upper portion at the open-ended of casing, there is the linkage segment horizontal direction between two water conservancy diversion faces, with this formation first step portion, and it has third water conservancy diversion face with this formation second step portion to lead the backward extension at the second water conservancy diversion face, thereby make smoke extractor during operation, outside air current forms the vortex air current of pushing down at first step portion along first water conservancy diversion face, and further strengthen this vortex air current at second step portion, thereby played the stopping of the flue gas that rises in the collection petticoat pipe to the smoke extractor, prevent the anti-overflow, make as far as possible many flue gases get into the smoking mouth of smoke extractor, avoided the flue gas to get into user's respiratory track to bring the discomfort for the user when promoting the smoking volume of smoke extractor, user experience has been promoted.

Description

Air guide assembly and smoke extractor

Technical Field

The utility model relates to an air water conservancy diversion subassembly and smoke extractor belongs to smoke extractor technical field.

Background

The existing smoke machine equipment is generally divided into a Chinese style smoke hood and an European style smoke hood, and the Chinese style smoke hood is provided with a smoke hood with a downward opening, so that the smoke hood can better absorb smoke compared with a European style planar smoke hood so as to meet the requirement of multiple smoke during cooking in China families. However, the smoke absorption hood of the Chinese range hood is large in size, if the smoke absorption effect is relatively good, the installation position is required to be lower, the sight line of a cooking bench of a user is easily shielded, and even if the smoke absorption hood is installed, the smoke absorption effect still cannot meet the requirements of some scenes of multiple smoke or multiple irritant gases of the user, and if the smoke absorption hood is used for frying spicy food materials, the irritant gases are still easily generated, so that the user is difficult to feel, and the user experience is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that needs to solve is the problem that solves current chinese style smoke extractor oil absorption cigarette effect and can not satisfy user's demand.

The utility model firstly provides an air guide component for a smoke extractor, which comprises a shell, wherein the shell is provided with a top wall and an air outlet arranged on the top wall,

the upper portion of the front of the shell is obliquely provided with a first flow guide surface and an oblique second flow guide surface, a connecting section is arranged between the two flow guide surfaces in the horizontal direction, a third flow guide surface extends backwards from the second flow guide surface, and the included angle between the second flow guide surface and the horizontal direction is smaller than the included angle between the third flow guide surface and the horizontal direction.

Optionally, an included angle between the first flow guiding surface and the horizontal plane ranges from 91 degrees to 131 degrees; the length of the connecting section is n times of the length of the first flow guide surface, wherein the range of n is 0.3-0.6; the distance between the connecting section and the top wall is M, the length of the connecting section is L, and the ratio of L to M ranges from 0.3 to 0.5.

Optionally, the first flow guiding surface is planar, a free end of the first flow guiding surface extending downward exceeds the connecting section, and a first vortex region is formed by the inner surface of the exceeding part of the first flow guiding surface, the connecting section and the second flow guiding surface; the second guide surface is connected with a third guide surface, wherein the free end of the second guide surface extending downwards exceeds the joint of the third guide surface, and the exceeding part of the inner surface of the second guide surface exceeds the second vortex area of the third guide section.

Optionally, strip-shaped air outlets are arranged on the left side and the right side of the third flow guide surface, the air outlets are arranged in parallel with the first flow guide surface, and a non-air supply area is arranged between the two air outlets; the high-speed downward air outlet of the air outlet forms a negative pressure drainage area, so that the air flow entering the third flow guide surface is downward along the downward air outlet.

Optionally, the wind path includes bilateral symmetry's the wind path of airing exhaust, and the air intake sets up the roof, and the air that gets into passes through automatically controlled heat dissipation end, and through the fan pressurization back, discharges from the air exit, the air exit sets up the guide, and this guide is used for making everywhere to air exhaust and have the same air-out direction.

Optionally, the fans are axial fans arranged in a non-air supply area, an air outlet at one end of the air outlet blows air to the other end of the air outlet, an air outlet cavity is formed in the air outlet, and when the two fans exhaust air, air supply high-air-speed areas on two sides are formed.

Optionally, the housing includes baffles disposed at two sides, end surfaces of the baffles are disposed at two sides of the first flow guiding surface, and projections of side surfaces of the baffles are in line with the first flow guiding surface, the baffles are disposed at two sides of the second flow guiding surface, and projections of side surfaces of the baffles are in line with the second flow guiding surface, so as to limit the air flows at the left and right sides; the baffles on the two sides extend downwards at the projection of the third flow guide surface.

The utility model also provides a smoke extractor, including foretell air water conservancy diversion subassembly, its characterized in that: the shell forms a smoke collecting hood, the inner wall surface of the smoke collecting hood is a concave third flow guide surface, the projection of the positive vertical surface of the smoke collecting hood is above 1/3 to form a strip-shaped first air suction opening, and the air suction opening forms a negative pressure area located in the concave part.

Optionally, the concave third flow guiding surface extends downward, a second air suction opening is further formed at the lower end of the upright surface, the second air suction opening comprises a bearing section exceeding the third flow guiding surface, and the bearing section and the lower end of the third flow guiding surface form a circuitous air inlet duct portion.

Optionally, the projection of the lower end of the baffle plate corresponding to the side surface of the second air suction opening continues to extend downwards, the lower end of the baffle plate is horizontally arranged, and the side edge of the baffle plate extends obliquely from outside to inside and is connected with the horizontally arranged lower end.

The utility model discloses an air guiding subassembly for smoke extractor, through set up the slope at the positive upper portion of the open-ended of casing and be provided with first water conservancy diversion face and the second water conservancy diversion face of slope, there is the linkage segment in the horizontal direction between two water conservancy diversion faces, form first step portion with this, and extend backward at second water conservancy diversion face and have the third water conservancy diversion face and form second step portion with this, thereby make the smoke extractor during operation, outside air current forms the vortex air current of pushing down at first step portion along first water conservancy diversion face, and further strengthen this vortex air current at second step portion, thereby play the flue gas that rises in the collection petticoat pipe of smoke extractor and blockked, prevent the anti-overflow, make as far as possible many flue gas get into the smoking mouth of smoke extractor, avoided the flue gas to get into user's respiratory track and bring the discomfort for the user when promoting the smoking volume of smoke extractor, user experience has been promoted, and because what vortex air current formed blocks the region, make the collection petticoat pipe of smoke extractor can be towards user's opening, be different from traditional cigarette machine opening down to make the casing of collection petticoat pipe can not form the hindrance to user's sight, convenience of customers cooks, further promoted user experience.

Drawings

Fig. 1 is a perspective view of a smoke extractor according to an embodiment of the present invention;

figure 2 is a front view of a smoking machine according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is an enlarged view of A in FIG. 3;

figure 5 is a schematic view of a smoke extractor of an embodiment of the present invention creating a swirling airflow and a downdraft airflow;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 7 is an enlarged view of B in FIG. 6;

FIG. 8 is a cross-sectional view taken along line C-C of FIG. 2;

FIG. 9 is an enlarged view of C in FIG. 8;

fig. 10 is a perspective view of a fan box of a smoke extractor according to an embodiment of the present invention with a portion of the upper portion cut away;

figure 11 is a partially exploded schematic view of a range hood in accordance with an embodiment of the present invention;

fig. 12 is a partially exploded view of a display module according to an embodiment of the present invention.

Reference numerals:

the air-cooling fan comprises a fan box 100, an exhaust cavity 110, a shell 200, a smoke-collecting hood 210, an exhaust outlet 211, a smoke suction port 212, a second suction port 213, a front panel 214, a top wall 220, a first flow guide surface 221, a connecting section 222, a second flow guide surface 223, a third flow guide surface 224, a baffle 230, an exhaust assembly 240, a guide net 241, a pressing plate 242, an axial flow fan 243, a coaming 250, an air inlet section 261, a narrow air duct section 262, an expansion section 263, a display part 270, a panel sheet metal part 280, a to-be-connected hole 281, a concave part 282, a mounting hole 283, an electronic control box 300, a radiator 310, an oil tank 400, a smoke-exhausting fan 500, a volute 600, a display assembly 700, a glass display panel 710, an electronic control assembly 720, a touch part 721, a display unit 722, a cover 723, a mounting column 730, an elastic claw 740, a pressure-connected stress section 741, a pull-connected stress section 742 and a fixed connecting piece 743.

Detailed Description

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict in structure or function. The present invention will be described in detail below with reference to examples.

The utility model provides an air water conservancy diversion subassembly, be used for the smoke extractor, as shown in fig. 1 to 7, including casing 200, casing 200 has roof 220, and set up in the air exit 211 of roof 220, the positive upper portion slope of casing 200 is provided with first water conservancy diversion face 221, and the second water conservancy diversion face 223 of slope, the horizontal direction has linkage segment 222 between two water conservancy diversion faces, second water conservancy diversion face 223 extends backward has third water conservancy diversion face 224, wherein second water conservancy diversion face 223 is less than third water conservancy diversion face 224 and horizontal direction's contained angle with the contained angle of horizontal direction.

Wherein the housing 200 of the range hood opens toward the user, the face of the housing 200 facing the user side forms a front panel 214 that forms the smoke collection hood 210, unlike conventional Chinese style range hoods in which the opening of the smoke collection hood 210 is downward. The first flow guiding surface 221 is arranged on the upper end surface of the opening, the smoke suction opening 212 is arranged in the smoke collecting cover 210, the first flow guiding surface 221 and the second flow guiding surface 223 incline inwards, the first flow guiding surface 221, the second flow guiding surface 223 and a connecting section 222 connecting the first flow guiding surface 221 and the second flow guiding surface 223 in the horizontal direction form a first step portion, and the second flow guiding surface 223 and the third flow guiding surface 224 form a second step portion. When the smoke extractor works, the fan inside the smoke extractor rotates at a high speed, so that negative pressure is formed in the opening area of the smoke collecting hood 210, a large amount of external airflow is sucked into the smoke collecting hood 210, a part of the external airflow is guided along the first guide surface 221 which inclines downwards, the airflow is turned over by the step surface of the first step part formed at the connecting section 222, so that vortex airflow air1 shown in fig. 5 is formed, the vortex airflow is further strengthened when entering the second step part where the third guide surface 224 is located, the vortex airflow forms an airflow blocking area to block the smoke of a user during cooking from rising along the inner wall surface of the smoke collecting hood 210 and overflowing, discomfort caused to the user when the smoke reaches the head area of the user and enters the respiratory tract of the user is avoided, so that the smoke of the user after entering from the lower part of the smoke collecting hood 210, enters the smoke suction opening 212 as much as possible and does not overflow towards the area where the user is located, the air outlet 211 of the top wall 220 outputs downward blowing air, which can further enhance the negative pressure in the area where the first guide surface 221 is located, and guide the airflow in the area downward, so that more airflow enters downward along the first guide surface 221 to form more vortex airflow, thereby playing a better role of preventing rising smoke from overflowing, and the downward blowing air also forms a downward barrier to a certain extent, further preventing the smoke from overflowing.

Through the air guide assembly for the smoke extractor of the utility model, the upper part of the front surface of the opening of the shell 200 is provided with the first guide surface 221 and the second guide surface 223 which is inclined, the connecting section 222 is arranged between the two guide surfaces in the horizontal direction to form the first step part, and the third guide surface 224 is extended backwards from the second guide surface 223 to form the second step part, thereby when the smoke extractor works, the external air flow forms the downward-pressing vortex air flow at the first step part along the first guide surface 221, and further strengthens the vortex air flow at the second step part, thereby blocking the smoke ascending in the smoke collecting hood 210 of the smoke extractor, preventing the overflow, leading most of the smoke to enter the smoke suction port 212 of the smoke extractor, avoiding the smoke from entering the respiratory tract of a user to bring discomfort to the user while improving the smoke suction capacity of the smoke extractor, and improving the user experience, and because the blocking area that the vortex air current formed for smoke collecting cover 210 of smoke extractor can be towards user's opening, is different from traditional cigarette machine opening downwards, thereby makes smoke collecting cover 210's casing 200 can not form the hindrance to user's sight, and convenience of customers cooks, has further promoted user experience.

In some embodiments of the present invention, as shown in fig. 4, an included angle a1 between the first guiding surface 221 and the horizontal plane ranges from 91 degrees to 131 degrees, and specifically may be 91 degrees, 95 degrees, 101 degrees, 109 degrees, 111 degrees, 121 degrees, and 131 degrees; the length L2 of the connecting section 222 is 0.3 to 0.6 times the length L1 of the first guiding surface 221, and may be specifically 0.3, 0.4, 0.5, or 0.6; the distance between the connecting section 222 and the top wall 220 is H, and the ratio of L2 to H ranges from 0.3 to 0.5, and specifically may be 0.3, 0.35, 0.43, 0.46, 0.5, so that the external airflow is guided along the first guiding surface 221 to better form a vortex airflow between the first step portions.

In some embodiments of the present invention, the first guiding surface 221 is planar, the free end extending downward exceeds the connecting section 222, and the inner surface of the exceeding portion and the connecting section 222 and the second guiding surface 223 form a first vortex region. As shown in fig. 5, the planar first guiding surface 221 is inclined inward, and the free end of the planar first guiding surface exceeds the portion of the connecting section 222 connected to the first guiding surface 221, so that when the airflow flows downward along the first guiding surface 221, due to the wall-seeking effect of the airflow, the direction of the airflow changes at the connection between the free end and the connecting section 222, and continues to advance along the surface of the connecting section 222, and the direction of the airflow changes again at the connection between the connecting section 222 and the second guiding surface 223, and advances along the second guiding surface 223. The air flow direction is bent twice to form a vortex air flow air1, the free end of the first flow guide surface 221 exceeds the part of the connecting section 222 connected with the first flow guide surface 221, so that the connecting part of the two ends of the connecting section 222 is provided with plate surfaces which are bent to form the same direction extension, the first plate surface is the part of the free end of the first flow guide surface 221 exceeding the connecting section 222 connected with the first flow guide surface 221, the second plate surface is the second flow guide surface 223, and therefore the air flow is guided inwards in a U-shaped cavity formed by the first plate surface, the connecting section 222 and the second plate surface, and the formation of the vortex air flow is further enhanced.

In some embodiments of the present invention, as shown in fig. 3, the second guiding surface 223 is planar, the free end extending downward exceeds the joint of the third guiding surface 224, and the inner surface of the portion exceeding the second guiding surface and the third guiding surface 224 form a second vortex area. As shown in fig. 4, the portion of the free end of the second flow guiding surface 223 exceeding the third flow guiding surface 224 forms a bending region with the third flow guiding surface 224, and the direction of the airflow entering the bending region along the second flow guiding surface 223 changes inward again, so as to form another vortex airflow air2, so that the vortex airflow formed by the connecting section 222 forms an inner-outer double vortex airflow, which plays a better role in blocking the overflow of the ascending flue gas.

In some embodiments of the present invention, as shown in fig. 5 and 7, the elongated air outlets 211 are disposed on the left and right sides of the third guiding surface 224, the air outlets 211 are disposed in parallel with the first guiding surface 221, and a non-air-supply region is disposed between the two air outlets 211; the high speed of the exhaust outlet 211 flows downward out of the air inlet 3 to form a negative pressure flow guiding region, so that the airflow entering the third guiding surface 224 flows downward along the downward air outlet. The air outlet 211 is arranged on the inner side of the third flow guide surface 224 relative to the second flow guide surface 223, the strip-shaped arrangement direction of the air outlet 211 is parallel to the first flow guide surface 221, so that negative pressure areas are formed on the left side and the right side of the first flow guide surface 223, the vortex air flow formed at the connecting section 222 is attracted to be pressed downwards along the downward air outlet, the movement speed of the vortex air flow is accelerated, the blocking area for the rising flue gas is strengthened, and the overflow of the flue gas is better blocked.

The utility model discloses an in some embodiments, still including bilateral symmetry's the wind path of airing exhaust, the air intake setting is at roof 220, and the air of entering passes through automatically controlled heat dissipation end to after the fan pressurization, discharge from air exit 211, set up the guide at air exit 211, this guide is used for making and has the same air-out direction everywhere to air exhaust. As shown in fig. 3, a fan box 100 for installing a volute 600 is disposed at an upper portion of a housing 200 of the smoke extractor, a smoke extractor 500 is installed in the volute 600, an installation chamber is formed in the fan box 100, the housing 200 is connected to a smoke collecting hood 210 at a lower portion, an electronic control box 300 is installed at a top portion of the fan box 100, and the electronic control box 300 is provided with an exposed radiator 310 to radiate heat of a power device of a motor for driving the smoke extractor 500. An air inlet is formed in the position, where the electronic control box 300 is mounted, of the top of the fan box 100, an independent air guide chamber is formed from the air inlet to the air outlet 211 to be isolated from the volute 600, so that interference with air inlet of the smoke exhaust fan 500 is avoided, and the radiator 310 is arranged on an air inlet path close to the air inlet, so that cold air at the air inlet firstly exchanges heat with the radiator 310 and is exhausted from the air outlet 211 in the air guide chamber, and good heat exchange of the radiator 310 is achieved. The exhaust outlet 211 is symmetrically distributed on two sides of the third flow guide surface 224 relative to the center line of the exhaust fume collecting hood 210, and a guide piece is arranged at the exhaust outlet 211, so that the air outlet direction is vertical and downward, if the guide piece can be a honeycomb guide net 241, the guide net 241 forms a certain thickness in the vertical and downward direction, and the guide effect of air outlet is achieved.

In some embodiments of the present invention, the fan is disposed near the non-air-supply region for the axial fan 243, and is blown to the other end of the air outlet 211 by the one end air outlet of the air outlet 211, so that the air-exhaust chamber 110 is formed on the air outlet 211, and when the two fans exhaust air, the air-supply high-wind-speed region on both sides is formed. As shown in fig. 4 and 7, the exhaust chamber 110 formed by the housing 200 is disposed at both sides of the upper portion of the smoke collecting hood 210, the exhaust chamber 110 is disposed in a strip shape, and the exhaust chamber 110 is provided with an exhaust assembly 240 including a guide net 241 and a pressing plate 242. The axial flow fan 243 is arranged at one end of the exhaust cavity 110 close to the non-air supply area, the length of the exhaust cavity 110 is the same as that of the exhaust port 211, the lower part of the exhaust cavity 110 is provided with a strip-shaped guide net 241 with a certain thickness to form an exhaust guide effect, a pressure plate 242 is further arranged above the guide net 241 to fix the guide net 241 on the outer wall surfaces of the pressure plate 242 and the exhaust fume collecting hood 210, the axial flow fan 243 is fixed between the shell 200 and the pressure plate 242, a strip-shaped air inlet is arranged on the pressure plate 242, the horizontal air supply blown out by the axial flow fan 243 passes through the air inlet and the guide net 241 in the exhaust cavity 110 to form vertical downward air supply, the air supply characteristics of the axial flow fan 243 are easy to know, the air volume on one side of the exhaust port 211 far away from the axial flow fan 243 is large, and the air volume on the position closer to the axial flow fan 243 is small, so the air volume discharged by the strip-shaped exhaust port 211 is not uniform in the length direction, that is, the farther from the middle non-blowing area, the larger the air volume thereof, thereby reducing the interference of the blowing air with the non-blowing area.

In some embodiments of the present invention, the housing 200 includes the baffle 230 disposed at both sides, the end surface of the baffle 230 is disposed at both sides of the first guiding surface 221, and the projection of the side surface thereof coincides with the first guiding surface 221, the baffle 230 is disposed at both sides of the second guiding surface 223, and the projection of the side surface thereof coincides with the second guiding surface 223, so as to define the air flow at both sides; the baffles 230 on both sides extend downwards in projection of the third deflector surface 224. The baffles 230 on both sides form two side plates of the smoke collecting cover 210, and the current situations of both ends of the step part formed by the first flow guiding surface 221, the connecting section 222 and the second flow guiding surface 223 are mutually matched with the end surface of the baffle 230, so that the baffle 230 and the step part realize the integral matching of appearance. And the lower end of the baffle 230 is beyond the lower end of the third guiding surface 224, and the space of the beyond part is used for installing the oil containing tank 400, so that the oil containing tank 400 and the third backflow surface are integrally consistent with the appearance of the single plates on both sides.

The utility model also provides a smoke extractor, as shown in fig. 1 to 7, including the casing 200 that forms collection petticoat pipe 210 with set up in the fan case 100 of collection petticoat pipe 210 upper end installation smoke extractor 500, be provided with the air water conservancy diversion subassembly of above-mentioned embodiment on collection petticoat pipe 210, wherein still be provided with display 270 in the inboard of first water conservancy diversion face 221, display 270 is provided with display device and key parts, the panel of first water conservancy diversion face 221 is transparent or translucent to display device's region, throw out from the panel of first water conservancy diversion face 221 with the demonstration of this display device, and still can set up the key parts of touch-control on this panel, with the work of this control smoke extractor. The inner wall surface of the smoke collecting hood 210 is a concave third diversion surface 224, the baffles 230 on two sides form the side wall of the smoke collecting hood 210, a strip-shaped first suction opening, namely the smoke suction opening 212 in the above embodiment, is formed above the projection 1/3 of the vertical surface of the smoke collecting hood 210, and the first suction opening forms a negative pressure area in the concave part, namely the smoke suction opening 212 in the above embodiment. Since the air guide assembly is located at the protruding part of the upper part of the smoke collecting cover 210, a downward-pressing vortex airflow is formed in the area, so that a blocking area is formed, and a negative pressure area of a smoking area is formed between the blocking area and the inner wall surface of the smoke collecting cover 210. When a user cooks, smoke generated by a cooker arranged below the smoke extractor is sucked and ascended by the negative pressure area and enters the first air suction opening, and one part of the smoke continuously ascends to the area above the first air suction opening in the smoke collecting hood 210, and due to blocking of vortex air flow and air flow supplied vertically downwards by the air outlet 211, the smoke cannot overflow out of the smoke collecting hood 210 but temporarily gathers in the area above the negative pressure area and is sucked by the first air suction opening, so that the smoke extraction efficiency is effectively improved.

In some embodiments of the present invention, the concave third guiding surface 224 extends downward, and a second air suction opening 213 is further formed at the lower end of the upright surface, and the second air suction opening 213 includes a receiving section exceeding the third guiding surface 224, and the receiving section and the lower end of the third guiding surface 224 form a circuitous air inlet duct portion. Wherein the second inlet scoop 213 is located the lower tip of the downward extension of third guiding plane 224, and the air inlet duct also communicates with first inlet scoop, can further absorb the flue gas that produces in the pan when diffusing to the lower position through second inlet scoop 213 to further promote the efficiency of smoking.

In some embodiments of the utility model, the outside end face of two baffles 230 cooperates with the both ends cooperation of your first water conservancy diversion face 221 of air water conservancy diversion subassembly and second water conservancy diversion face 223 in above-mentioned embodiment, and the inside slope of outside end face from the top down, the terminal surface of baffle 230 lower extreme sets up for the level, form upper portion evagination with third water conservancy diversion face 224 with this, and from the top down collection petticoat pipe 210 of indent gradually, and air water conservancy diversion subassembly sets up in the evagination position on upper portion, thereby in the smoke ventilator during operation, form the vortex air current of pushing down in the evagination position, form the negative pressure zone of smoking between the wall of the indent of vortex air current and third water conservancy diversion face 224, and form the blocking zone of flue gas through vortex air current and the vertical decurrent air supply of air exit 211, prevent the excessive of rising flue gas. Through the opening that sets up above-mentioned shape towards the smoke extractor of user one side collection petticoat pipe 210, the smoke extractor of the collection petticoat pipe 210 that open side down traditional relatively, can not block the user towards the sight of pan, convenient user uses, the vortex air current that pushes down through air water conservancy diversion subassembly and the vertical decurrent air supply of air exit 211 form the blocking to the flue gas that rises moreover, it is excessive that the flue gas that has avoided rising is through the open region towards the user to this has promoted the smoking efficiency of smoke extractor.

The utility model provides an air duct assembly for the smoke extractor, as shown in fig. 1 to 5, 8 to 9, including roof 220, bounding wall 250 and front panel 214, roof 220, bounding wall 250 and front panel 214 enclose into the wind channel section jointly, are provided with air exit 211 at front panel 214 and set up the axial fan 243 in air exit 211 one side. The air outlet 211 is disposed at one end of the air duct section, and the air flow enters from the other end of the air duct section, passes through the inner cavity of the air duct section, and is pressurized by the axial flow fan 243 to be discharged from the air outlet 211. Wherein the front panel 214 forms the smoke collection hood 210 of the extractor. Because the airflow inlet of the air duct section is arranged at the position of the top wall 220, namely at the high position of the installation of the smoke exhaust ventilator, the air which is sucked from the top wall 220 and is not mixed with the oil smoke at the high position in the space of the kitchen is sucked, so that a cleaner fresh air inlet duct section is formed and is discharged downwards from the air outlet 211 at the front. Through forming the new trend of sending out downwards, it is regional to form the new trend below the outside of collection petticoat pipe 210, the effectual anti-overflow to the flue gas that rises in the collection petticoat pipe 210 plays and stops the effect, and still form the negative pressure zone with this in the regional outside of new trend, with this attract more external air currents to get into the flue gas space that collection petticoat pipe 210 belongs to from the lower part of collection petticoat pipe 210, form the propelling movement effect to the flue gas, help the more cigarette entering smoke inlet in collection petticoat pipe 210 of more, thereby promote the smoking efficiency of smoke extractor.

In some embodiments of the present invention, the air duct section includes a narrow air duct section 262 formed by the enclosing plate 250 close to the vertical surface of the top wall 220, an air intake section 261 located upstream of the narrow air duct section 262, and an expansion section 263 located downstream of the narrow air duct section 262 and enclosed by the front plate 214 and the horizontal section of the top wall 220 and the enclosing plate 250. As shown in fig. 9, the front panel 214 forms a smoke collecting cover 210 of the smoke extractor, the upper end of the smoke collecting cover 210 is provided with a fan box 100 for installing a fan of the smoke extractor, the outer shell of the smoke collecting cover 210 is formed by a top wall 220, a narrow air duct section 262 is formed on the vertical surface of the top wall 220, and the narrow air duct section 262 is arranged around the fan box 100, so that the volume of the fan box 100 is not increased too much due to the arrangement of the narrow air duct section 262, and the fan box 100 is generally required to be adapted to other households because the fan box 100 is positioned at the top of the smoke extractor during installation, and thus the installation space of the fan box 100 is narrow, and the installation of the fan box 100 is convenient. The expanded section 263 is formed by enclosing the front panel 214, the horizontal section at the top and the enclosing panel 250 inside the smoke collecting hood 210, and extends on two horizontal sides above the smoke collecting hood 210 to form an even airflow collecting cavity, so that the fresh air supplied by the air outlet 211 forms an air curtain with a larger area in the horizontal direction, and the effect of blocking the smoke in the smoke collecting hood 210 is better achieved.

In some embodiments of the present invention, as shown in fig. 10, the horizontal cross section of the narrow air channel section 262 is U-shaped, the distance between the inner wall surfaces of the narrow air channel section 262 in the horizontal direction is 5 to 40mm, and the ratio of the perimeter of the narrow air channel section 262 in the horizontal direction to the distance is 20 to 60; the narrow air channel section 262 is distributed on the front side and the two side faces of the fan box 100, so that a U-shaped horizontal section is formed, the air inlet section 261 can be communicated with the front part and the two side face parts of the narrow air channel section 262 at the same time, and the horizontal section of the air inlet section 261 is also U-shaped; or the air inlet section 261 is only communicated with one side or two sides thereof, for example, due to structural limitation, the air inlet section 261 is only arranged at the tops of two sides of the fan box 100, so that the air inlet section 261 is only communicated with the two side parts of the narrow air channel section 262, or the air inlet section 261 is only arranged at the top of one side of the fan box 100 or only arranged at the top of the front side. Through setting up the horizontal cross-section of narrow wind channel section 262 for the U type, make things convenient for the flexible structure of air inlet section 261, because air inlet section 261 is located the position and probably has and interferes with other structures, therefore its structure of setting up is restricted. In the configuration shown in fig. 8, the electrical control box 300 is disposed on the top of the front surface of the fan box 100, so that the air inlet section 261 is mainly distributed on the top of the two side surfaces of the fan box 100.

In some embodiments of the present invention, a throat is provided at the junction of the narrow air channel section 262 and the expanded section 263, and the free section of the throat extends toward the center of the narrow air channel section 262. As shown in fig. 7, the front portion of the top wall 220 is located at the connection position of the narrow air duct section 262 and the expanding section, and a portion of the top wall 220 extends inward toward the center of the narrow air duct, so that the air flow passage at the narrow air duct end is reduced to form a reduced opening, and thus the middle-aged air flow at the narrow air duct end passes through the reduced opening, and the air flow speed is increased to be discharged into the expanding section 263, which can increase the air flow density in the expanding section 263 to form a larger air pressure, thereby facilitating the speed increase of the outward discharge of the air flow at the air outlet 211 of the expanding section 263, and thus forming an air curtain with a high air flow speed, which better plays a role of blocking the flue gas.

In some embodiments of the present invention, the air outlet 211 is disposed on the horizontal plane section or the inclined plane section of the front plate 214, the included angle between the inclined plane section and the vertical plane is 71.5 degrees to 95.5 degrees, and the air outlet 211 is provided with a guide member, so that the air supply direction of the air outlet 211 has a downward component; the guiding member may be a honeycomb guiding net 241, and the guiding net 241 has a certain thickness in the vertical downward direction, so as to guide the outlet air. If the air outlet 211 is disposed at the horizontal surface end of the front panel 214, the air flow discharged from the air outlet 211 is directed vertically downward; if the exhaust fan is arranged at the inclined section, the inclined section inclines towards the inner side of the fume collecting cover 210, so that the airflow direction sent out by the exhaust port 211 inclines towards the outer side of the fume collecting cover 210, the included angle between the inclined section and the vertical surface is set to be a proper angle, the airflow of the exhaust port 211 inclines outwards, the volume of the fume collecting area in the fume collecting cover 210 can be enlarged by the exhaust airflow inclined outwards, and more fume is attracted to enter the fume suction port 212 of the fume collecting cover 210.

In some embodiments of the present invention, the guiding element is provided with a rotating shaft (not shown in the figure) so that the wind guiding direction of the guiding element has a first wind supplying direction and a second wind supplying direction. Compared with the guide of the guide piece in the previous embodiment, the guide piece is fixed, the controllable rotating shaft is additionally arranged in the guide piece in the changed embodiment, and the rotating shaft is linked with the air guide blades in the guide piece, so that the air flow air supply direction of the guide piece can be changed, and a user can conveniently adjust an appropriate air supply angle according to personal needs when using the air guide device.

In some embodiments of the present invention, an electric control device is disposed in the air intake section 261, the electric control device is provided with an exposed heat sink 310, heat dissipation fins (not shown) are disposed on the heat sink 310, and the air in the air intake section 261 flows toward the heat dissipation fins 311 and absorbs heat. The electric control rotating shaft can comprise an electric control box 300 assembly, a control circuit board for driving a fan of the smoke extractor to work is arranged in the electric control box 300, a power device is arranged on the electric control board to control the rotating speed of the fan of the smoke extractor, and a metal radiator 310 is further arranged in the electric control box 300 to radiate the power device for facilitating the radiation of the power device. A metal heat sink 310, such as an aluminum heat sink 310, has fins distributed thereon to increase the heat dissipation area, and the heat sink 310 is exposed from the electronic control box 300. As shown in fig. 9, the heat sink 310 is disposed in the air intake section 261, so that when the air flow in the air intake section 261 passes through, the air flow first exchanges heat with the heat sink 310, then enters the expanding section 263 through the narrow air duct section 262, and finally is discharged from the air outlet 211. Because the air inlet section 261 is positioned at the top of the smoke extractor and is far away from the cooker and the smoke collecting hood 210, the air temperature in the area is lower, so that the air flow of the air inlet section 261 can reduce the temperature of the radiator 310 to some extent, the temperature of a power device is maintained to be normal, and the working reliability of the smoke extractor is ensured.

The utility model discloses still provide a smoke extractor, as shown in fig. 1 to 5, 8 to 9, including the casing 200 that forms collection petticoat pipe 210 with set up in the fan case 100 of collection petticoat pipe 210 upper end installation smoke exhaust fan 500, be provided with the wind channel subassembly that above-mentioned embodiment mentioned at casing 200 and fan case 100 of smoke extractor. The display part 270 is further disposed on the inner side of the first flow guide surface 221, the display part 270 is provided with a display device and a key component, the panel of the first flow guide surface 221 is transparent or semitransparent for the area of the display device, so that the display of the display device is projected from the panel of the first flow guide surface 221, and the panel can also be provided with a touch key component to control the operation of the smoke extractor. The inner wall surface of the smoke collecting hood 210 is a concave third diversion surface 224, the baffles 230 on two sides form the side wall of the smoke collecting hood 210, a strip-shaped first suction opening, namely the smoke suction opening 212 in the above embodiment, is formed above the projection 1/3 of the vertical surface of the smoke collecting hood 210, and the first suction opening forms a negative pressure area in the concave part, namely the smoke suction opening 212 in the above embodiment. Since the air guide assembly is located at the protruding part of the upper part of the smoke collecting cover 210, a downward-pressing vortex airflow is formed in the area, so that a blocking area is formed, and a negative pressure area of a smoking area is formed between the blocking area and the inner wall surface of the smoke collecting cover 210. When a user cooks, smoke generated by a cooker arranged below the smoke extractor is sucked and ascended by the negative pressure area and enters the first air suction opening, and one part of the smoke continuously ascends to the area above the first air suction opening in the smoke collecting hood 210, and due to blocking of vortex air flow and air flow supplied vertically downwards by the air outlet 211, the smoke cannot overflow out of the smoke collecting hood 210 but temporarily gathers in the area above the negative pressure area and is sucked by the first air suction opening, so that the smoke extraction efficiency is effectively improved.

In some embodiments of the present invention, the concave third guiding surface 224 extends downward, and a second air suction opening 213 is further formed at the lower end of the upright surface, and the second air suction opening 213 includes a receiving section exceeding the third guiding surface 224, and the receiving section and the lower end of the third guiding surface 224 form a circuitous air inlet duct portion. Wherein the second inlet scoop 213 is located the lower tip of the downward extension of third guiding plane 224, and the air inlet duct also communicates with first inlet scoop, can further absorb the effect to the flue gas that produces in the pan when diffusing to the lower position through second inlet scoop 213 to further promote the efficiency of smoking.

In some embodiments of the utility model, the outside end face of two baffles 230 cooperates with the both ends cooperation of your first water conservancy diversion face 221 of air water conservancy diversion subassembly and second water conservancy diversion face 223 in above-mentioned embodiment, and the inside slope of outside end face from the top down, the terminal surface of baffle 230 lower extreme sets up for the level, form upper portion evagination with third water conservancy diversion face 224 with this, and from the top down collection petticoat pipe 210 of indent gradually, and air water conservancy diversion subassembly sets up in the evagination position on upper portion, thereby in the smoke ventilator during operation, form the vortex air current of pushing down in the evagination position, form the negative pressure zone of smoking between the wall of the indent of vortex air current and third water conservancy diversion face 224, and form the blocking zone of flue gas through vortex air current and the vertical decurrent air supply of air exit 211, prevent the excessive of rising flue gas. Through the opening that sets up above-mentioned shape towards the smoke extractor of user one side collection petticoat pipe 210, the smoke extractor of the collection petticoat pipe 210 that open side down traditional relatively, can not block the user towards the sight of pan, convenient user uses, the vortex air current that pushes down through air water conservancy diversion subassembly and the vertical decurrent air supply of air exit 211 form the blocking to the flue gas that rises moreover, it is excessive that the flue gas that has avoided rising is through the open region towards the user to this has promoted the smoking efficiency of smoke extractor.

The utility model provides a display module, as shown in fig. 1, 11 and 12, display module 700 mountable is used for showing running state information on domestic appliance such as the smoke extractor if the mountable on consumer. The display device 700 includes a glass display panel 710, and further includes an electronic control device 720, the electronic control device 720 includes a touch portion 721 abutting against an inner wall of the glass display panel 710, and a display unit 722 abutting against an inner wall of the glass display panel 710, the electronic control device 720 includes a PCB board, and a connecting wire (not shown) with a connector is connected to the PCB board; the display module 700 further includes a detachable connection portion provided at an inner wall surface of the glass display panel 710 and fixed by applying a force toward the inner wall surface. In this embodiment, the display module 700 is first fixed on the glass display panel 710, and then the glass display panel 710 is fixed on the electrical equipment through a detachable connection portion, taking the electrical equipment as a smoke extractor as an example, the glass display panel 710 is in a long strip shape, the length of the electric control module 720 is shorter than that of the glass display panel 710, for example, the electric control module 720 is arranged in the middle of the glass display panel 710, the length of the electric control module is about 1/3 of the glass display panel 710, and the electric control module 720 is provided with a touch portion 721 and a display unit 722, so that the display and the key function can be performed through the glass display panel 710. Because the electric control component 720 needs to be tightly attached and fixed on the glass display panel 710 so as to realize that the display state meets the requirement and the touch sensitivity meets the requirement, and the outer surface of the glass display panel 710 generally does not have through holes on the surface to fix the glass panel through a fixing part such as a screw in order to meet the appearance requirement, in order to realize the stable and reliable fixation of the strip-shaped glass display panel 710 on the shell of the smoke extractor and realize good display and touch key functions, the electric control component 720 is firstly fixed on the inner side of the glass display panel 710 so that the electric control component 720 is tightly attached to the glass display panel 710, and then is fixed on the shell of the smoke extractor through the detachable connecting part arranged on the inner side of the glass display panel 710, thus the relative shell of the glass display panel 710 can be detached, and the maintenance of the electric control component 720 in the later period is convenient, and the electric control unit realizes the functions of displaying and touching the keys on the surface of the glass display panel 710. If the electrical control assembly 720 is fixed to the housing, and then the glass display panel 710 is fixed to the electrical control assembly 720, the strip-shaped glass display panel 710 is difficult to be attached tightly to the housing unless a plurality of screw holes are formed on the surface of the glass display panel 710, which significantly reduces the overall appearance of the entire glass display panel 710.

Therefore the utility model discloses display module 700, be fixed in glass display panel 710's inner wall earlier through the automatically controlled subassembly 720 that will contain touch-control portion 721 and display element 722, and can dismantle connecting portion in glass display panel 710's internal face setting, make automatically controlled subassembly 720 realize closely laminating fixedly in glass display panel 710 with this, thereby realize reliable and stable demonstration and touch key function at glass display panel 710's surface, and realize through dismantling connecting portion that glass display panel 710 is used for dismantling of consumer fixed, make things convenient for later stage automatically controlled subassembly 720's maintenance, and this kind of scheme need not set up fixed through-hole at glass display panel 710, thereby guaranteed the holistic uniformity of glass display panel 710's surface, its appearance aesthetic feeling has been promoted.

In some embodiments of the present invention, as shown in fig. 11 and 12, the glass display panel 710 is a strip, the electric control component 720 is disposed in the middle of the glass display panel 710, at least one detachable connecting portion is disposed on each of the two sides of the electric control component 720, the electric control component 720 includes a cover 723, which covers the electric control component 720, and the touch portion 721 is made of an elastic conductive material. In this embodiment, the glass display panel 710 is a long strip, the electronic control device 720 is mounted on the back of the glass display panel 710, and occupies about 1/3 of the length of the glass display panel 710, the display unit 722 of the electronic control device 720 can be disposed in the middle of the electronic control device 720, the touch portions 721 are distributed on two sides of the display unit 722, the touch portions 721 can be conductive members such as conductive springs and conductive sponges, one end of which abuts against the back surface of the glass panel, and the other end of which is electrically connected to a touch detection line corresponding to the PCB of the touch part 721, the touch detection line being further connected to a corresponding touch detection circuit, the silk screen printing of the keys, which can represent name lamps of the keys, is arranged at the position of the touch part 721 at which the front surface of the glass panel is positioned, so that when a finger touches the front surface of the glass display panel 710, the sensing signal of the finger is detected by the touch detection circuit through conduction of the touch portion 721. The cover 723 covers the back of the electronic control component 720, so that the electronic control component 720 is protected from being damaged by external objects during installation, and the cover 723 can be fixed to the back of the glass display panel 710 to form an installation cavity, so that the electronic control component 720 is installed in the installation cavity. Specifically, as shown in fig. 12, a mounting post 730 is fixed to the back surface of the glass display panel 710, and has a through hole, and a through hole is formed in the cover 723, so that the cover 723 is fixed to the glass display panel 710 by a fixing member such as a screw passing through the through hole and fixed to the through hole. At least one detachable connecting portion is disposed on two sides of the electronic control assembly 720, so as shown in fig. 12, since the glass display panel 710 is long, two detachable connecting portions are disposed on two sides of the electronic control assembly 720 respectively in order to reliably fix the glass display panel 710 to the housing 200.

In some embodiments of the present invention, the display unit 722 includes at least one illuminating unit for illuminating the glass display panel 710; the lighting unit is a display screen, and a pattern is displayed through the display screen and is displayed by the glass display panel 710; or the lighting unit is an LED lamp, and a pattern is disposed at a position corresponding to the LED lamp, and the pattern is disposed inside or outside the glass display panel 710. As shown in fig. 11 and 12, the display unit 722 is an LED digital display screen, the display glass panel is made of a translucent material, the body of the LED nixie tube cannot be seen on the front surface of the display unit, but when the LED nixie tube is lit, the light displayed on the display unit passes through the glass display panel 710 and is observed by the user. Further, a key indicator is further disposed at the position of the touch portion 721, a silk screen is disposed at a position corresponding to the front surface of the glass display panel 710, when the user turns on the display panel by touching the key with a finger, such as an on/off switch, the key indicator of the on/off switch is turned on, so as to better prompt that the user is currently in an on state, and the key indicator is turned off when the user touches the on/off switch again, thereby facilitating the touch operation of the user.

In some embodiments of the present invention, the connecting wire with the connector has a winding portion (not shown), which is straightened when the display module 700 is detached and pulled out, so that the connector is pulled out; the display module 700 has a base portion fixed to the inside of the glass display panel 710, a PCB board fixed on the base portion, and a cover 723 fixed on the base portion. In this embodiment, one end of the connecting line is electrically connected to the display module 700, and the other end of the connecting line is electrically connected to a main control board of a device, such as a smoke extractor, so that the processor of the main control board obtains the touch key pressing signal of the display module 700, and transmits the display module 700 of the display signal to control the display unit 722 to display. Because the glass display panel 710 is detachable from the housing, for convenient installation and maintenance, the connecting wire can be provided with a winding remainder for buffering, so that certain buffering is reserved for the connection of the glass display panel 710 to the main control board after the glass display panel is detached, and the detachment is not influenced. Further, a detachable connection terminal may be disposed in the middle of the connection line, so that the glass display panel 710 is completely separated from the housing by detaching the connection terminal after the glass display panel 710 is detached. The display unit 722 is fixed and electrically connected to the PCB to form a display circuit board, the display circuit board is fixed to the base portion, and then the base portion is fixed to the inner side, i.e., the back side, of the glass display panel 710, which may be fixed by a fixing post provided on the glass display panel 710 as mentioned in the ascending embodiment, and then fixed to the glass display panel 710 by a fixing member through a through hole of the cover 723; or the base part is adhered to the back surface of the glass display panel 710 by using a strong adhesive, the cover 723 is fixed on the base part, and the cover 723 is fixed on the glass display panel 710, so that the display unit 722 is tightly adhered to the back surface of the glass display panel 710, and the light transmission of the display unit 722 and the sensitivity of touch key detection are improved.

In some embodiments of the present invention, as shown in fig. 2 to 7, 11 and 12, the detachable connection portion includes a clip member and a connection hole 281, wherein the clip member is fixed on the glass panel, and the connection hole 281 is disposed on the housing of the electric device. The clamping member has elastic claws 740, when the elastic claws 740 are not stressed, the elastic claws 740 stretch, and the to-be-connected holes 281 and the pulling stress section 742 limit the movement of the glass display panel 710 in the direction perpendicular to the glass display panel 710; the elastic claw 740 is provided with a pressure receiving section 741, when the display module 700 is pressed to the to-be-connected hole 281, the pressure receiving section 741 is stressed to deform the elastic claw 740 towards the center, so that the elastic claw 740 enters the to-be-connected hole 281; the elastic claw 740 has a pull receiving force section 742, and when the display assembly 700 is pulled away from the hole 281 to be coupled, the pull receiving force section 742 is forced to deform the elastic claw 740 toward the center, so that the elastic claw 740 moves out of the hole 281 to be coupled. As shown in fig. 4, 7 and 12, the resilient claw 740 has petal-shaped deformations that are expanded toward the periphery when not being mounted to the to-be-connected hole 281, the petal-shaped deformations form a pressure receiving section 741, and the petal-shaped deformations extend and taper toward the bottom of the resilient claw 740 to form a tension receiving section 742. The pressure receiving section 741 is connected to the pulling force receiving section 742 at the bottom of the elastic claw 740, the largest cross-sectional area of the pressure receiving section 741 in the length direction when the pressure receiving section is not installed is larger than the diameter of the hole 281 to be connected, for example, 2 to 3 times of the diameter of the hole, so that when the pressure receiving section 741 is clamped into the hole 281 to be connected, the deformation portion thereof is bent and extends into the hole 281 to be connected, the largest cross-sectional area of the pulling force receiving section 742 in the length direction is slightly larger than the diameter of the hole 281 to be connected, and the pulling force receiving section 742 is clamped in the hole 281 to be connected and forms an interference fit, thereby being reliably fixed in the hole 281 to be connected, and further realizing the reliable fixation of the glass panel on the casing.

Specifically, as shown in fig. 4 and 7, the pressure receiving section 741 includes 2 to 6 elastic claws 740, the elastic claws 740 are uniformly and symmetrically distributed around the center, the fixed ends of the elastic claws 740 are fixedly connected with the glass display panel 710, the elastic claws 740 are arc-shaped, odd points are arranged from the fixed ends to the middle of the free ends, and the area of the outer wall of each elastic claw 740 is the largest at the odd points; and the area is larger than the aperture of the hole 281 to be connected; the area enclosed by the outer wall surface at the fixed end is smaller than the area of the hole 281 to be connected; the area enclosed by the outer wall surface at the free end is smaller than the area of the hole 281 to be connected. The odd-point is the connection between the pressure receiving section 741 and the pull receiving section 742, so that when the odd-point contacts the wall of the hole 281 to be connected, the petal-shaped deformation portion of the elastic claw 740 is in or close to the natural peripheral expansion state without being installed, and thus the elastic claw is reliably fixed in the hole 281 to be connected in the vertical direction.

In some embodiments of the present invention, as shown in fig. 12, the detachable connection portion includes a fixing connection member 743, the fixing connection member 743 is bonded to the back of the glass display panel 710, and the fixing connection member 743 is integrally connected to the joint member. The fixing connector 743 has a planar connecting piece, the connecting piece is connected to the pulling force receiving section 742 of the clip connector, the area of the connecting piece is larger than the largest cross-sectional area of the force receiving section in the length direction, and the connecting piece is bonded to the back of the glass display panel 710 by a strong adhesive tape such as a double-sided adhesive tape, so that the clip connector is fixed to the glass display panel 710. Or in another embodiment, the fixing connector 743 is connected with the clamping member through a fastener.

The utility model discloses still provide a smoke extractor, as shown in fig. 2 to 7, 11 and 12, including panel sheet metal component 280, still include the display module 700 that above-mentioned embodiment mentioned, its display module 700 is installed on panel sheet metal component 280, panel sheet metal component 280 have with glass display panel 710 internal face adaptation connection face, it includes mounting hole 283 for automatically controlled subassembly 720 passes in order to hold in this hole, and treat connecting hole 281, be used for the joint spare joint, make glass display panel 710 fix on panel sheet metal component 280. The panel sheet metal part 280 is used as a part of the shell, the shell forms a smoke collecting cover, the fan box 100 of the smoke exhaust fan 500 is installed at the upper end of the smoke collecting cover, the volute 600 is installed in the fan box 100, an installation chamber is formed in the fan box 100, the shell 200 is connected with the smoke collecting cover 210 at the lower part, the electronic control box 300 is installed at the top of the fan box 100, and the electronic control box 300 is provided with an exposed radiator 310 so as to radiate heat of a power device of a motor for driving the smoke exhaust fan 500.

In some embodiments of the present invention, as shown in fig. 11, the aperture range of the connecting hole 281 is 10 to 18mm, the adaptive connecting surface is the concave part 282 of the shape adaptation of the fixed connecting piece 743, the area of the concave part 282 is greatly smaller than the area size adaptation of the connecting piece of the fixed connecting piece 743, it is to be arranged in the central region of the concave part 282 through the connecting hole 281, when the connecting hole 281 and the pulling force receiving section 742 are used to limit the glass display panel 710, the top of the fixed connecting piece 743 is abutted to the top surface of the concave part 282. Since the connecting piece has a certain thickness, when the glass display panel 710 is defined by the to-be-connected hole 281 and the pull-receiving section 742, the top of the fixing connector 743, i.e., the connecting piece, is received in the recess 282, so that the fixing connector does not protrude from the back of the glass display panel 710 to form interference, and the display device 700 is attached to the back of the glass display panel 710.

The utility model discloses an in some embodiments, still include main control board (not shown in the figure), this main control board electricity is connected with the butt joint, and this butt joint is connected with main control board detachable electricity, and wherein the connecting wire is connected to the one end of butt joint, and display module 700 is connected to the other one end of connecting wire. Thereby realizing the detachable electrical connection of the display module 700 and the main control board; or in another implementation scheme, two ends of the connecting line are fixedly and electrically connected with the display panel and the main control panel, and the butt joint is arranged in the middle of the connecting line, so that the main control panel and the display panel can be also detachably and electrically connected.

Further, two sealing members are screwed on two sides of the panel sheet metal part 280 through screws, and are used for shielding gaps on two sides of the panel sheet metal part 280. Thereby achieving the overall consistency of the panel sheet metal part 280 with the glass display panel 710.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (10)

1. An air guide assembly for a smoke extractor is characterized by comprising a shell, wherein the shell is provided with a top wall and an air outlet arranged on the top wall,

the upper portion of the front of the shell is obliquely provided with a first flow guide surface and an oblique second flow guide surface, a connecting section is arranged between the two flow guide surfaces in the horizontal direction, a third flow guide surface extends backwards from the second flow guide surface, and the included angle between the second flow guide surface and the horizontal direction is smaller than the included angle between the third flow guide surface and the horizontal direction.

2. The air deflection assembly of claim 1, wherein the first deflection surface is angled from a horizontal plane in a range of 91 degrees to 131 degrees; the length of the connecting section is n times of the length of the first flow guide surface, wherein the range of n is 0.3-0.6; the distance between the connecting section and the top wall is M, the length of the connecting section is L, and the ratio of L to M ranges from 0.3 to 0.5.

3. The air guide assembly of claim 1, wherein the first guide surface is planar, the free end of the first guide surface extends downward beyond the connecting section, and the inner surface of the portion of the first guide surface, the connecting section and the second guide surface form a first vortex region; the second guide surface is connected with a third guide surface, wherein the free end of the second guide surface extending downwards exceeds the joint of the third guide surface, and the inner surface of the exceeding part of the second guide surface and the third guide section form a second vortex area.

4. The air guide assembly according to claim 3, wherein strip-shaped air outlets are arranged on the left side and the right side of the third guide surface, the air outlets are arranged in parallel with the first guide surface, and a non-air supply area is arranged between the two air outlets; the high-speed downward air outlet of the air outlet forms a negative pressure drainage area, so that the air flow entering the third flow guide surface is downward along the downward air outlet.

5. The air guide assembly of claim 4, further comprising left and right symmetrical air exhaust paths, wherein the air inlet is disposed on the top wall, the air entering the top wall passes through the electrically controlled heat dissipating end, and is pressurized by the fan and then exhausted from the air outlet, and the air outlet is provided with a guide member for making the air exhausted from the air outlet have the same air outlet direction.

6. The air guide assembly according to claim 5, wherein the fans are axial fans and are disposed near the non-air supply region, and the air outlet at one end of the air outlet blows air towards the other end of the air outlet, and an air outlet cavity is formed on the air outlet, so that when two fans exhaust air, air supply high-speed regions are formed at both sides.

7. The air guide assembly of claim 5, wherein the housing includes baffles disposed on both sides, the end surfaces of the baffles are on both sides of the first guide surface, and the projections of the side surfaces of the baffles coincide with the first guide surface, the baffles are on both sides of the second guide surface, and the projections of the side surfaces of the baffles coincide with the second guide surface, so as to define the air flows on both sides; the baffle extends downwards at the projection of the third flow guide surface.

8. A smoking machine comprising the air guide assembly as claimed in any one of claims 1 to 7, wherein the housing forms a smoke collecting hood, the inner wall surface of the smoke collecting hood is a concave third guide surface, the projection of the front vertical surface of the smoke collecting hood above 1/3 forms a strip-shaped first air suction opening, and the first air suction opening forms a negative pressure area located in the concave part.

9. The cigarette extractor as claimed in claim 8, wherein the concave third guiding surface extends downward, and a second air inlet is formed at the lower end of the upright surface, and the second air inlet comprises a receiving section exceeding the third guiding surface, and the receiving section and the lower end of the third guiding surface form a circuitous air inlet channel part.

10. A smoking machine according to claim 9, wherein the lower ends of the baffle plates at the two sides of the smoke collecting hood continue to extend downwards corresponding to the projection of the side surface of the second air suction opening, the lower ends of the baffle plates are horizontally arranged, and the side edges of the baffle plates form the lower ends which extend obliquely from outside to inside and are connected with the horizontal arrangement.

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