CN209147176U - Top-sucking kitchen ventilator - Google Patents

Abstract

The utility model provides a kind of top-sucking kitchen ventilator, is related to range hood technical field, to solve the technical problem that top-sucking kitchen ventilator volume is larger and using effect is not ideal enough.It is related to a kind of top-sucking kitchen ventilator, comprising: blower housing, the blower being located in blower housing combination and the exhaust fume collecting hood being connected with blower housing combine；Exhaust fume collecting hood combination have air inlet, air inlet it is opening down；Blower combination includes impeller assembly, and impeller assembly includes the first impeller and the second impeller.The top-sucking kitchen ventilator can greatly promote air quantity and smoke absorption effect.

Description

Top-sucking kitchen ventilator

Technical field

The utility model relates to range hood technical fields, more particularly, to a kind of top-sucking kitchen ventilator.

Background technique

Range hood is a kind of kitchen appliance for purifying kitchen environment.For range hood, blower is entire oil suction The quality of the core component of smoke machine, fan performance determines the performance of range hood, is one of core competitiveness of such product.

Nowadays, the type of range hood has very much, such as: top-sucking kitchen ventilator.In the top-sucking kitchen ventilator, one As use multiple wing type centrifugal blower fan.

For above-mentioned top-sucking kitchen ventilator, in order to guarantee that smoke machine has corresponding smoking effect, in the prior art greatly It mostly uses and increases duct dimension, increase range hood impeller size, promote motor speed, using modes such as variable-frequency motors, in this way Both cost is increased, resource is wasted.Simultaneously as this is but also top-sucking kitchen ventilator by the larger of components Biggish installation space is needed, for a user, not only unsightly, but also operates and is also likely to be present many inconvenience.

Utility model content

The purpose of this utility model is to provide a kind of top-sucking kitchen ventilators, to solve guaranteeing top-sucking kitchen ventilator In the case where with identical size and revolving speed, top-sucking kitchen ventilator how is set to realize Wind Volume, to promote its smoke absorption effect The technical issues of.

Top-sucking kitchen ventilator provided by the utility model, comprising: blower housing, the blower being located in the blower housing Combination and the exhaust fume collecting hood being connected with the blower housing combine；The exhaust fume collecting hood combination has air inlet, the air inlet It is opening down.

Blower combination includes impeller assembly, the impeller assembly include the first impeller that is coaxial and can rotating synchronously with It is located at the second impeller of first impeller peripheral side.

First impeller includes the multiple arcs blade being arranged circumferentially about, and is formed between the two neighboring arc shaped blade The first runner passed through for fluid.

Second impeller includes Shang Quan, lower circle and fixed outer ring blade therebetween, the two neighboring outer ring The second flow channel passed through for fluid is formed between blade.

Further, first impeller further includes the impeller disk, and multiple arc shaped blades are installed on the impeller disk.

Second impeller further includes being located between the upper circle and the lower circle and being fixedly arranged on the outer ring blade inner circumferential The mid-game of side.

The impeller disk is connected in the mid-game.

Further, the impeller disk is equipped with first boss, and the mid-game is equipped with second boss.

The first boss is fixedly set in the second boss.

Further, the first boss is equipped with first through hole, and the second boss is equipped with the second through-hole, and described the The outer peripheral surface of one through-hole and the second boss are fitted close.

The blower combination further includes the motor for driving the impeller assembly rotation, and the output shaft of the motor sequentially passes through Second through-hole and the first through hole, and the impeller assembly is fixed on the output shaft by locking member.

Further, along the axial direction of the impeller assembly, the air inlet side end face of first impeller and second impeller Corresponding side end face is coplanar with.

Alternatively, the air inlet side end face of first impeller protrudes from the corresponding side end face of second impeller.

Further, the quantity of the arc shaped blade is odd number；And/or the quantitative range of the arc shaped blade is 9~13 It is a.

Further, the arc shaped blade along first impeller peripheral, oblique arrange, and the inclined direction with it is described The rotation direction of impeller assembly is opposite.

Further, the arc shaped blade is set as notch features close to the end of first impeller center, and described cuts Mouth structure is close to the inlet side of first impeller.

Further, the air inlet mode of first impeller is the face air inlet mode with its axis perpendicular.

Further, by the first runner to second impeller, the cross sectional dimensions of the first runner is along air-flow Flow direction be gradually expanded.

Top-sucking kitchen ventilator provided by the utility model the utility model has the advantages that

In the top-sucking kitchen ventilator, when work, under the action of blower combination, oil smoke flow up through air inlet into Enter exhaust fume collecting hood combination, and is combined into after blower combines and is discharged by exhaust fume collecting hood.Since the impeller assembly in blower combination includes The first impeller and the second impeller coaxial and can rotate synchronously are capable of forming between the arc shaped blade in the first impeller first-class Road is capable of forming second flow channel between the outer ring blade in the second impeller, since the second impeller is located at the peripheral side of the first impeller, When impeller assembly work, a part of air-flow is directly entered second flow channel, and flows out from second flow channel, and another part air-flow will be through First runner enters second flow channel and flows out from second flow channel, and compared with prior art, which is guaranteeing to flow through second On the basis of impeller air quantity is constant, and the first impeller by adding supplements air quantity, finally makes entire impeller assembly The total blast volume passed through is to flow through the sum of the first impeller and the air quantity of the second impeller, to greatly improve air quantity.

Furthermore due to the structure of the second impeller be include Shang Quan, it is lower circle and outer ring blade (such as: multiple wing type centrifugal blower fan leaf Wheel) structure type, thus first can be added in its inner circumferential side in the case where guaranteeing the identical size of conventional centrifugal draught fan impeller Impeller, according to above-mentioned introduction it is found that the impeller assembly is in the case where guaranteeing with conventional centrifugal draught fan impeller same rotational speed, due to Adding for first impeller can be realized greatly promoting for air quantity, to improve the smoke absorption effect of top-sucking kitchen ventilator.

Detailed description of the invention

It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art Under the premise of labour, it can also be obtained according to these attached drawings other attached drawings.

Fig. 1 is the structural schematic diagram of top-sucking kitchen ventilator provided by the embodiment of the utility model, wherein fan casing Part side plate is not shown；

Fig. 2 is the fractionation structural representation of top-sucking kitchen ventilator shown in Fig. 1；

Fig. 3 is the structural schematic diagram of the combination of blower shown in Fig. 1；

Fig. 4 is the fractionation structural representation of the combination of blower shown in Fig. 3；

Fig. 5 is the structural schematic diagram of the first impeller shown in Fig. 4；

Fig. 6 is the structural schematic diagram of impeller assembly shown in Fig. 4；

Fig. 7 is the enlarged diagram at A shown in Fig. 6.

Icon:

100- blower housing；The combination of 200- blower；The combination of 300- exhaust fume collecting hood；

The first impeller of 210-；The second impeller of 220-；230- spiral case；240- hold-doun nut；250- retaining ring；

211- arc shaped blade；The 212- impeller disk；213- first boss；

The outer ring 221- blade；222- mid-game；223- second boss；

2111- notch features.

Specific embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally Field those of ordinary skill all other embodiment obtained without making creative work belongs to practical Novel protected range.

It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only For ease of description the utility model and simplify description, rather than the mechanism of indication or suggestion meaning or element must have it is specific Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the One ", " second " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.

Embodiment

As shown in Figures 1 to 4, a kind of top-sucking kitchen ventilator is present embodiments provided, comprising: blower housing 100 is located at Blower combination 200 and the exhaust fume collecting hood connected with blower housing 100 in blower housing 100 combine 300；Exhaust fume collecting hood combination 300 With air inlet, air inlet it is opening down；Blower combination 200 includes impeller assembly, and impeller assembly includes coaxial and can synchronize First impeller 210 of rotation and the second impeller 220 for being located at 210 peripheral side of the first impeller, the first impeller 210 include circumferentially cloth The multiple arcs blade 211 set forms the first runner passed through for fluid, the second leaf between two neighboring arc shaped blade 211 Wheel 220 includes Shang Quan, lower circle and fixed outer ring blade 221 therebetween, is formed and is used between two neighboring outer ring blade 221 In the second flow channel that fluid passes through.

It should be noted that " upper and lower " in " Shang Quan, lower circle " mentioned above does not play restriction.

In the top-sucking kitchen ventilator, when work, under the action of blower combination 200, oil smoke is flowed up through entering the wind Mouthful enter exhaust fume collecting hood combination 300, and by exhaust fume collecting hood combine 300 enter blower combine 200 after be discharged.

Since the impeller assembly in blower combination 200 includes coaxial and the first impeller 210 that can be rotated synchronously and the second leaf 220 are taken turns, is capable of forming first runner, the outer ring blade in the second impeller 220 between the arc shaped blade 211 in the first impeller 210 Second flow channel is capable of forming between 221, since the second impeller 220 is located at the peripheral side of the first impeller 210, when impeller assembly works When, a part of air-flow is directly entered second flow channel, and flows out from second flow channel, and another part air-flow will enter the through first runner Two runners are simultaneously flowed out from second flow channel, and compared with prior art, which is guaranteeing that flow through 220 air quantity of the second impeller constant On the basis of, and the first impeller 210 by adding supplements air quantity, is finally passed through entire impeller assembly total Air quantity is the sum of the air quantity for flowing through the first impeller 210 and the second impeller 220, to greatly improve air quantity.

Furthermore due to the structure of the second impeller 220 be include Shang Quan, it is lower circle and outer ring blade 221 (such as: multiple wing type centrifugal Draught fan impeller) structure type, thus can increase in the case where guaranteeing the identical size of conventional centrifugal draught fan impeller in its inner circumferential side If the first impeller 210, according to above-mentioned introduction it is found that the impeller assembly is guaranteeing the feelings with conventional centrifugal draught fan impeller same rotational speed Under condition, since adding for the first impeller 210 can be realized greatly promoting for air quantity, to improve the suction of top-sucking kitchen ventilator Oil smoke effect.

It should be noted that the air quantity and existing draught fan impeller of the second impeller 220 are (such as: more in the case where same rotational speed Wing formula centrifugal blower fan blade wheel) it is identical, due to increasing the air quantity of the first impeller 210 acting, thus greatly improve impeller sets The air quantity of part.

Wherein, as shown in figure 4, blower combination 200 further includes the snail for installing the first impeller 210 and the second impeller 220 Shell 230.

In the embodiment, as shown in figures 2 or 4, the internal diameter of the outer diameter of the first impeller 210 less than the second impeller 220.

Wherein, the second impeller 220 uses multiple wing type centrifugal blower fan impeller.

It should be noted that the structure of the first impeller 210 is different from the second impeller 220, also, arc shaped blade 211 and outer The structure for enclosing blade 221 is not also identical.

Preferably, along the axial direction of impeller assembly, the air inlet side end face of the first impeller 210 side corresponding to the second impeller 220 Face is coplanar with.

Alternatively, the air inlet side end face of the first impeller 210 protrudes from the corresponding side end face of the second impeller 220.

In the embodiment, the quantitative range of arc shaped blade 211 is 9~13.

Wherein, the quantity of arc shaped blade 211 is preferably odd number.By practicing and testing proof, using odd number arc-shaped leaf When piece 211, the noise of impeller assembly at work is smaller, and the balance of impeller assembly is preferable.

Specifically, the quantity of the arc shaped blade 211 in the first impeller 210 shown in Fig. 4 or Fig. 5 is 11.

However, it is desirable to explanation, in practical applications, the quantity of arc shaped blade 211 is not limited to 11.

In the embodiment, both the first impeller 210 and the second impeller 220 are in split type package assembly.

As shown in Figure 5 and Figure 6, the first impeller 210 further includes the impeller disk 212, and multiple arcs blade 211 is installed in the impeller disk On 212；Second impeller 220 further includes the mid-game 222 for being located between Shang Quan and lower circle and being fixedly arranged on 221 inner circumferential side of outer ring blade； Wherein, the impeller disk 212 is connected in mid-game 222.

Specifically, as shown in Figure 4 and Figure 5, the impeller disk 212 is equipped with first boss 213, and it is convex that mid-game 222 is equipped with second Platform 223；First boss 213 is fixedly set in second boss 223.

Please continue to refer to Fig. 4 and Fig. 5, first boss 213 is equipped with first through hole, and it is logical that second boss 223 is equipped with second The outer peripheral surface of hole, first through hole and second boss 223 is fitted close；Blower combination 200 further includes that the impeller assembly is driven to turn Dynamic motor, the output shaft of motor sequentially passes through the second through-hole and first through hole, and is fixed on impeller assembly by locking member On the output shaft of motor.

Certainly, the suit mode of first boss 213 and second boss 223 is not limited to aforesaid way, specifically, can be with It is that first boss 213 is equipped with first through hole, second boss 223 is equipped with the second through-hole, the outer peripheral surface of first boss 213 and the Two through-holes are fitted close；The output shaft of motor passes through first through hole, and impeller assembly is fixed on the defeated of motor by locking member On shaft.

Wherein, hold-doun nut 240 can be selected in locking member.

In the above-described embodiments, the position of mid-game 222 can with no restrictions, can be according to actual installation and air inlet demand when design It is set.

For example, mid-game 222 can set the bottom face for being connected to lower circle.Alternatively, mid-game 222 is connected to outer ring blade 221 On inner peripheral surface.

In the above-described embodiments, the first impeller 210 and the second impeller 220 can be also integrally formed, the impeller sets being integrally formed Part.

Specifically, the impeller disk 212 can be omitted, and arc shaped blade 211 is directly arranged in mid-game 222.

As shown in figure 5, by first runner to the second impeller 220, the cross sectional dimensions of first runner is along gas in the embodiment The flow direction of stream is gradually expanded.

In impeller assembly work, when air-flow passes through first runner, since the cross sectional dimensions of first runner is along air-flow Flow direction be gradually expanded, it is thus possible to first runner formed at the center of the first impeller 210 certain high pressure and to It is flowed at the outer edge low pressure of first runner, to guarantee that composite impeller has good rectification effect.

Please continue to refer to Fig. 5, the one end of arc shaped blade 211 far from 210 center of the first impeller, and it is close to the first impeller The end of 210 inlet sides is equipped with retaining ring 250, and retaining ring 250 links together multiple arcs blade 211.

In the embodiment, which is annular structure.

Specifically, retaining ring 250 is located at the outlet air edge of multiple first runners, on the one hand, firm effect can be played, Increase the firm performance of composite impeller entirety；On the other hand, it can reduce arc shaped blade 211 far from 210 center of the first impeller Position one end causes arc shaped blade 211 to vibrate generated noise due to going out wind disturbance.

In the embodiment, the air inlet mode of the first impeller 210 is the single side air inlet mode with its axis perpendicular.Using face Air inlet mode can guarantee that impeller assembly is effectively entered the wind, and have good air inlet effect.

In the embodiment, arc shaped blade 211 along the first impeller 210 peripheral, oblique arrange, and the inclined direction with it is described The rotation direction of impeller assembly it is opposite (namely: the radian direction of the arc shaped blade 211 of the first impeller 210 need to turn with impeller assembly Move contrary), to guarantee the normal or effective air inlet of the first impeller 210.

In the embodiment, as shown in fig. 7, arc shaped blade 211 is set as notch knot close to the end at 210 center of the first impeller Structure 2111, and close to the inlet side of the first impeller 210, (that is: notch features 2111 are located at arc shaped blade 211 to notch features 2111 Side far from mid-game 222).

Wherein, the benefit of the notch features 2111 setting is to can reduce arc shaped blade 211 in the first impeller 210 Heart position one end causes arc shaped blade 211 to vibrate generated noise due to air inlet disturbance.

The course of work of the top-sucking kitchen ventilator are as follows:

When blower 200 work of combination, oil smoke, which is flowed up, enters exhaust fume collecting hood combination 300 through air inlet, and by exhaust fume collecting hood Combination 300 enter blower combination 200, enter blower combination 200 during, the first impeller 210 be face air inlet mode, one It is directly entered in the second flow channel of the formation of outer ring blade 221 after dividing air-flow front air inlet, after another part air-flow positive will enter the wind It is transported to the outer edge exit of the first impeller 210 by first runner, enters back into the second flow channel of the formation of outer ring blade 221 In, then, the total blast volume of the first impeller 210 and the second impeller 220 is flowed through, is flowed out from the air outlet of spiral case 230.

Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new The range of each embodiment technical solution of type.

Claims (8)

1. a kind of top-sucking kitchen ventilator characterized by comprising blower housing (100) is located at the blower housing (100) Interior blower combination (200) and the exhaust fume collecting hood being connected with the blower housing (100) combine (300)；

Exhaust fume collecting hood combination (300) has an air inlet, the air inlet it is opening down；

The blower combination (200) includes impeller assembly, and the impeller assembly includes the first impeller that is coaxial and can rotating synchronously (210) and it is located at the second impeller (220) of the first impeller (210) peripheral side；

First impeller (210) includes the multiple arcs blade (211) being arranged circumferentially about, the two neighboring arc shaped blade (211) first runner passed through for fluid is formed between；

Second impeller (220) includes Shang Quan, lower circle and fixed outer ring blade (221) therebetween, two neighboring institute State the second flow channel for being formed between outer ring blade (221) and being passed through for fluid；First impeller (210) further includes the impeller disk (212), multiple arc shaped blades (211) are installed on the impeller disk (212)；

Second impeller (220) further includes being located between the upper circle and the lower circle and being fixedly arranged on the outer ring blade (221) mid-game (222) of inner circumferential side；

The impeller disk (212) is connected on the mid-game (222)；The impeller disk (212) is equipped with first boss (213), The mid-game (222) is equipped with second boss (223)；

The first boss (213) is fixedly set on the second boss (223).

2. top-sucking kitchen ventilator according to claim 1, which is characterized in that the first boss (213) is equipped with the One through-hole, the second boss (223) are equipped with the second through-hole, and the outer peripheral surface of the second boss (223) is logical with described first Hole is fitted close；

The blower combination (200) further includes the motor for driving the impeller assembly rotation, and the output shaft of the motor is successively worn Second through-hole and the first through hole are crossed, and the impeller assembly is fixed on the output shaft by locking member.

3. top-sucking kitchen ventilator according to claim 1 or 2, which is characterized in that along the axial direction of the impeller assembly, institute The air inlet side end face side end face corresponding to the second impeller (220) for stating the first impeller (210) is coplanar with；

Alternatively, the air inlet side end face of first impeller (210) protrudes from the corresponding side end face of second impeller (220).

4. top-sucking kitchen ventilator according to claim 1 or 2, which is characterized in that the quantity of the arc shaped blade (211) For odd number；

And/or the quantitative range of the arc shaped blade (211) is 9~13.

5. top-sucking kitchen ventilator according to claim 1 or 2, which is characterized in that the arc shaped blade (211) is along described The peripheral, oblique of first impeller (210) arranges, and the inclined direction is opposite with the rotation direction of the impeller assembly.

6. top-sucking kitchen ventilator according to claim 5, which is characterized in that the arc shaped blade (211) is close to described The end at the first impeller (210) center is set as notch features (2111), and the notch features (2111) are close to first leaf Take turns the inlet side of (210).

7. top-sucking kitchen ventilator according to claim 5, which is characterized in that the air inlet side of first impeller (210) Formula is the face air inlet mode with its axis perpendicular.

8. top-sucking kitchen ventilator according to claim 1 or 2, which is characterized in that by the first runner to described The cross sectional dimensions of two impellers (220), the first runner is gradually expanded along the flow direction of air-flow.