CN207333295U - Centrifugal blower and kitchen ventilator - Google Patents

Abstract

The utility model is a kind of centrifugal blower and kitchen ventilator, is related to cooking fume control equipment technical field, small to solve wind pressure when existing centrifugal blower is run, and kitchen ventilator has the problem of pouring in down a chimney reflux in use and designs.The centrifugal blower includes volute of blower, impeller, motor and the chimb for being stopped to the air-flow for flowing backward to air inlet, and chimb is arranged on air inlet, and chimb and is stretched in the inner ring of impeller to the internal stretch of volute of blower.The kitchen ventilator includes casing of kitchen ventilator, exhaust fume collecting hood component and above-mentioned centrifugal blower.Centrifugal blower and kitchen ventilator provided by the utility model are used to purify kitchen environment.

Description

Centrifugal blower and kitchen ventilator

Technical field

It the utility model is related to cooking fume control equipment technical field, more particularly to a kind of centrifugal blower and kitchen ventilator.

Background technology

Kitchen ventilator is otherwise known as smoke exhaust ventilator, is a kind of kitchen appliance for being used to purify kitchen environment, can be by gas-cooker The oil smoke produced in exhaust gas and cooking process that burning produces is taken away rapidly, and discharges outdoor, to reach purification kitchen environment Purpose.

In the prior art, since the flow of centrifugal blower is big, air quantity is big, extensively should be able in kitchen ventilator air passage With.The quality of kitchen ventilator, is often determined by air passage, and all air passage technology is being continuously improved in most of producer at present, will centrifuge wind The parameters such as the air quantity and wind pressure of machine are constantly lifted, to lift the smoking ability of kitchen ventilator.However, most producers are for correlation The lifting of technical parameter, be all built upon end pipe net it is unresisted under the premise of, still, due to the difference in height of floor, public cigarette The factors such as the design difference in road and the difference of atmospheric environment so that after kitchen ventilator is installed in user family, its end pipe net On the resistance that is subject to also be not quite similar.The presence of resistance, will to pour in down a chimney reflux through inlet scoop through the oil smoke that centrifugal blower siphons away Into kitchen environment, moreover, in the case of holding resistance of pipe system larger, pour in down a chimney backflow phenomenon and become apparent.Pour in down a chimney backflow phenomenon Presence, greatly weaken the detergent power of kitchen ventilator, and pollution to a certain extent is caused to kitchen environment.

Utility model content

First purpose of the utility model is to provide a kind of centrifugal blower, to solve wind when existing centrifugal blower is run Press small, and kitchen ventilator exists pour in down a chimney the technical problem of reflux in use.

Centrifugal blower provided by the utility model, the gas entered from air inlet is discharged by air outlet, including wind turbine snail Shell, the impeller being arranged on inside the volute of blower, the motor for driving the wheel rotation and for described to flowing backward to The chimb that the air-flow of air inlet is stopped.

The chimb is arranged on the air inlet, and the chimb and is stretched to the internal stretch of the volute of blower In the inner ring of the impeller.

Further, the air outlet upward in the state of, close to the end face of the air inlet be flat using the impeller Face, using the center of the impeller as origin, establishes rectangular coordinate system, and the plane is in turn divided into positioned at upper right counterclockwise First quartile, the second quadrant, the third quadrant positioned at lower-left and the fourth quadrant positioned at bottom right positioned at upper left, the chimb Starting point and the angle of the initial position of the fourth quadrant are 45-75 °, and the chimb is located to be turned over clockwise by the starting point In 180 ° of regions formed.

Further, the angle of the initial position of the starting point and the fourth quadrant is 75 °, the terminal of the chimb with The starting point is in 120 °.

Further, the initial line that rises of the chimb includes knuckle, and/or, the termination side of the chimb includes transition Fillet.

Further, the chimb is continuous whole coil structures.

Further, the chimb includes multiple chimb units, and each chimb unit is along between the circumferential direction of the air inlet Every arrangement.

Further, the chimb extends to 2/5 of length no more than the volute of blower thickness of the volute of blower.

Further, baffle ring is further included, the chimb is installed on the baffle ring, and the baffle ring is removably mounted at described On volute of blower.

Further, the baffle ring is connected through a screw thread part on the volute of blower.

The beneficial effect that the utility model centrifugal blower is brought is：

By setting chimb, the air-flow for flowing backward to air inlet is stopped, wherein, chimb is arranged on air inlet, And chimb is to the internal stretch of volute of blower, and stretch in the inner ring of impeller.

The centrifugal blower at work, starts motor, drives wheel rotation, makes axial quilt of the air-flow from air inlet along impeller Be sucked into spiral case, during impeller drives flow rotation, axially into air-flow along the radial direction of impeller from centrifugation The air outlet discharge of wind turbine.There are the airflow reflux for during gas-flow resistance, being blocked and poured in down a chimney by resistance to air inlet at air outlet Place, and stopped by chimb.In the follow-up course of work of centrifugal blower, the above-mentioned air-flow stopped by chimb will be with follow-up The air-flow of entrance continues to be discharged to air outlet, and then is discharged from air outlet.

The setting of chimb so that the air-flow poured in down a chimney by air outlet resistance effectively stopped, prevent pour in down a chimney air-flow from into The outflow in air port, substantially reduces the destruction for pouring in down a chimney air-flow to air inlet negative pressuren zone.Also, with the work of centrifugal blower, this Part can also be discharged by the air-flow that chimb stops from air outlet, is effectively increased the pressure at air outlet, is improved centrifugation wind Maximum wind pressure when machine is run, so as to improve the ability that resistance is overcome during centrifugal blower operation.In addition, the knot of the centrifugal blower Structure is simple, and scheme is easily achieved, and the construction cycle is short, and there is higher market economy to be worth.

Second purpose of the utility model is to provide a kind of kitchen ventilator, to solve existing kitchen ventilator in use In the presence of the technical problem for pouring in down a chimney reflux.

Kitchen ventilator provided by the utility model, including casing of kitchen ventilator, exhaust fume collecting hood component and above-mentioned centrifugal blower.

The centrifugal blower is installed in the casing of kitchen ventilator, the air inlet and the air draught on the exhaust fume collecting hood component Mouth connection, oil smoke is introduced, the air outlet is connected with the exhaust outlet on the casing of kitchen ventilator, and oil smoke is discharged.

The beneficial effect that the utility model kitchen ventilator is brought is：

By setting casing of kitchen ventilator, exhaust fume collecting hood component and above-mentioned centrifugal blower, wherein, centrifugal blower is installed on kitchen ventilator In shell, the air inlet of centrifugal blower is connected with the inlet scoop on exhaust fume collecting hood component, for the oil smoke that will be produced in cooking process Introduce；Air outlet is connected with the exhaust outlet on casing of kitchen ventilator, for the oil smoke entered in volute of blower to be expelled to kitchen ventilator It is exterior.Correspondingly, the kitchen ventilator has, the institute of above-mentioned centrifugal blower is advantageous, and this is no longer going to repeat them.

In addition, by setting chimb, reduce the destruction for pouring in down a chimney air-flow to air inlet of centrifugal fan negative pressuren zone, improve from The ability of resistance is overcome during heart fan operation, it is achieved thereby that the enhancing of kitchen ventilator smoking effect so that the suction of kitchen ventilator is more To be powerful, detergent power is more prominent.In addition, the range hood structure is simple, scheme is easily achieved, for the efficient of kitchen environment Purification is of great significance.

Brief description of the drawings

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

Fig. 1 is the configuration schematic diagram of the utility model embodiment kitchen ventilator, wherein, it illustrate only the master in kitchen ventilator Want component；

Fig. 2 is the structure diagram of the utility model embodiment centrifugal blower；

Fig. 3 is the structure diagram of the utility model embodiment centrifugal blower guide ring；

Fig. 4 is the main structure diagram of the utility model embodiment centrifugal blower；

Fig. 5 is the front view of the first baffle ring structure in the utility model embodiment centrifugal blower；

Fig. 6 is the front view of second of baffle ring structure in the utility model embodiment centrifugal blower；

Fig. 7 is the front view of the third baffle ring structure in the utility model embodiment centrifugal blower；

Fig. 8 is the front view of the 4th kind of baffle ring structure in the utility model embodiment centrifugal blower.

Icon：10- centrifugal blowers；20- lubricating cup components；30- exhaust fume collecting hood components；40- air deflection assemblies；50- electrical appliance kit groups Part；60- casing of kitchen ventilator；11- volute of blower；12- baffle rings；13- impellers；14- motors；15- air outlets；121- chimbs；122- Flange；1- first quartiles；The second quadrants of 2-；3- third quadrants；4- fourth quadrants.

Embodiment

It is new to this practicality below in conjunction with attached drawing to make the purpose of this utility model, technical solution and advantage clearer The technical solution of type carries out clear, complete description.Obviously, described embodiment is only the part implementation of the utility model Example, instead of all the embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making wound All other embodiments obtained under the premise of the property made work, shall fall within the protection scope of the present invention.

, it is necessary to the orientation of the instruction such as explanation, term " on ", " under ", "left", "right" in the description of the utility model Or position relationship is based on orientation shown in the drawings or position relationship, it is only for easy to describe the utility model and simplification Description, rather than the device or element of instruction or hint meaning must have specific orientation, with specific azimuth configuration and behaviour Make, therefore it is not intended that limitation to the utility model.

, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in the description of the utility model Dress ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can It to be to be connected directly, can also be indirectly connected by intermediary, can be the connection inside two elements.For this area For those of ordinary skill, concrete meaning of the above-mentioned term in the utility model can be understood with concrete condition.

As depicted in figs. 1 and 2, a kind of centrifugal blower 10 is present embodiments provided, which is used for air inlet The gas of entrance is discharged by air outlet 15, including volute of blower 11, be arranged on inside volute of blower 11 impeller 13, for driving The motor 14 and the chimb 121 for being stopped to the air-flow for flowing backward to air inlet that impeller 13 rotates.Specifically, chimb 121 are arranged on air inlet, and chimb 121 is to the internal stretch of volute of blower 11, and stretch in the inner ring of impeller 13.

The centrifugal blower 10 at work, starts motor 14, and driving impeller 13 rotates, and makes air-flow from air inlet along impeller 13 Axial direction be sucked into spiral case, during impeller 13 drives flow rotation, axially into footpath of the air-flow along impeller 13 Discharged to direction from the air outlet 15 of centrifugal blower 10.There are during gas-flow resistance at air outlet 15, blocked and poured in down a chimney by resistance Airflow reflux stopped to air inlet, and by chimb 121.In the follow-up course of work of centrifugal blower 10, above-mentioned quilt The air-flow that chimb 121 stops will continue to be discharged to air outlet 15 with the air-flow subsequently entered, and then be discharged from air outlet 15.

The setting of chimb 121 so that the air-flow poured in down a chimney by 15 resistance of air outlet is effectively stopped, is prevented and is poured in down a chimney air-flow From the outflow of air inlet, the destruction for pouring in down a chimney air-flow to air inlet negative pressuren zone is substantially reduced.Also, with the work of centrifugal blower 10 To make, this part can also be discharged by the air-flow that chimb 121 stops from air outlet 15, effectively increase the pressure at air outlet 15, Maximum wind pressure when centrifugal blower 10 is run is improved, so as to improve the ability that resistance is overcome when centrifugal blower 10 is run.This Outside, the structure of the centrifugal blower 10 is simple, and scheme is easily achieved, and the construction cycle is short, and there is higher market economy to be worth.

It should be noted that in the present embodiment, chimb 121 can be towards the curl of 13 center of impeller bending, and chimb 121 contour line is parallel with the circumferential profile line of impeller 13.

It should also be noted that, in the present embodiment, being fixedly connected between motor 14, volute of blower 11 and impeller 13 can be with It is connected through a screw thread part realization.Specifically, motor 14 is connected through a screw thread part on volute of blower 11, impeller 13 passes through spiral shell Line connector is fixedly set on the output shaft of motor 14.It is this to be detachably fixed connection mode, greatly facilitate to centrifugation The maintenance and replacement of each component, shorten maintenance period, and reduce maintenance cost in wind turbine 10.

Fig. 2 is continued referring to, and combines Fig. 3, in the present embodiment, which can also include baffle ring 12.Specifically , chimb 121 is installed on baffle ring 12, and baffle ring 12 is removably mounted on volute of blower 11.

In the present embodiment, baffle ring 12 can be connected through a screw thread part on volute of blower 11.Specifically, continuing with ginseng According to Fig. 3, flange 122 is provided with baffle ring 12, threaded hole is provided with the end face of volute of blower 11, threaded connector passes through flange In through hole on 122 and the threaded hole being screwed on volute of blower 11.Wherein, threaded connector can be screw.It is threadedly coupled It is simple and reliable, convenient disassembly, easy to later maintenance.

It should be noted that in the present embodiment, the outer contour of baffle ring 12 can be the circular shape shown in figure, but not only This is limited only to, other shapes form can also be used, such as：Rectangle etc., as long as it is by the baffle ring 12 of this structure type, It can realize its fixation on volute of blower 11, and realize chimb 121 to pouring in down a chimney the stop of air-flow.

In addition, in the present embodiment, baffle ring 12 can also be installed on volute of blower 11 by modes such as clampings.

As shown in figure 4, air outlet 15 upward in the state of, using impeller 13 close to the end face of air inlet as plane, with leaf The center of wheel 13 is origin, establishes rectangular coordinate system, and plane is in turn divided into the first quartile 1 positioned at upper right, position counterclockwise The second quadrant 2, the third quadrant 3 positioned at lower-left and the fourth quadrant 4 positioned at bottom right in upper left, the starting point of chimb 121 and the The angle of the initial position of four-quadrant 4 is 60 ° ± 15 °, i.e., 45-75 °, also, chimb 121 positioned at being turned over clockwise by starting point In 180 ° of regions formed.

Verified through many experiments, when chimb 121 is arranged in above-mentioned zone, air inlet can be back to pouring in down a chimney Air-flow plays effective barrier effect, largely prevents and pours in down a chimney the unfavorable situation that air-flow is flowed out from air inlet, so that The destruction for pouring in down a chimney air-flow to air inlet negative pressuren zone is reduced, is effectively improved the operating pressure of centrifugal blower 10.Also, when convex When side 121 is arranged in above-mentioned zone, the air-flow that is blocked can also working on and be discharged to out with centrifugal blower 10 Air port 15, further increases the pressure at air outlet 15, so that improve centrifugal blower 10 overcomes resistance in the process of running Ability, ensure that the reliable discharge of air-flow, and then ensure that the functional reliability of the present embodiment centrifugal blower 10.

Preferably, in the present embodiment, starting point and the angle of the initial position of fourth quadrant 4 are 75 °, the terminal of chimb 121 It it is in 120 ° with starting point.

Continue referring to Fig. 2 and Fig. 3, in the present embodiment, chimb 121 plays an initial line and can include knuckle, alternatively, convex It can include knuckle in 121 termination, alternatively, playing initial line and terminating side for chimb 121 includes knuckle at the same time.Should Centrifugal blower 10 at work, since air-flow is axially into the rotation process of impeller 13, from impeller 13 along impeller 13 Radial direction discharge, the setting of knuckle so that flowing of the air-flow in volute of blower 11 is more steady so that centrifugation wind Noise in 10 operational process of machine substantially reduces, and further ensures the functional reliability of the present embodiment centrifugal blower 10.

Fig. 5-Fig. 8 is enumerated several structure types of chimb 121, wherein, playing initial line and terminating side includes transition circle Angle.Wherein, 121 structure of chimb can be Fig. 5 and shown in Fig. 6 initial line and terminate side symmetrical structure form, but not only This is limited only to, other structures form can also be used, such as：The unsymmetrical knot for playing initial line and terminating side shown in Fig. 7 and Fig. 8 Configuration formula.Therefore as long as it can realize air-flow by setting knuckle in an initial line for chimb 121 and/or termination side Smooth flow in volute of blower 11.

It should be noted that in the present embodiment, chimb 121 can be the above-mentioned structure shape that one section is set on baffle ring 12 Formula, but this is not limited solely to, other setting forms can also be used, such as：Chimb 121 is arranged to continuous whole coil structures, The air-flow poured in down a chimney is stopped using whole circle chimb 121.

It should also be noted that, in the present embodiment, chimb 121 except it is above-mentioned set on baffle ring 12 one section structure type and Outside the structure type that whole circle is set on baffle ring 12, other structures form can also be used, such as：Chimb 121 includes multiple chimbs Unit, circumferentially-spaced arrangement of each chimb unit along air inlet, is hindered pouring in down a chimney air-flow using spaced chimb unit Gear.As long as therefore its chimb 121 by setting this structure type, can realize the stop to pouring in down a chimney air-flow and improve centrifugation The wind pressure of wind turbine 10.

Continue referring to Fig. 5-Fig. 8, in the present embodiment, the length H that chimb 121 extends to volute of blower 11 is not more than wind turbine The 2/5 of 11 thickness of spiral case.Specifically, when the thickness of volute of blower 11 is 170-180mm, H can be any less than 60mm Numerical value.

Fig. 1 is continued referring to, the present embodiment additionally provides a kind of kitchen ventilator, including casing of kitchen ventilator 60, exhaust fume collecting hood component 30 and above-mentioned centrifugal blower 10.Specifically, centrifugal blower 10 is installed in casing of kitchen ventilator 60, its air inlet and exhaust fume collecting hood component Inlet scoop connection on 30, oil smoke is introduced, air outlet 15 is connected with the exhaust outlet on casing of kitchen ventilator 60, and oil smoke is discharged.

Correspondingly, the kitchen ventilator has, the institute of above-mentioned centrifugal blower 10 is advantageous, and this is no longer going to repeat them.

In addition, by setting chimb 121, the destruction for pouring in down a chimney air-flow to 10 air inlet negative pressuren zone of centrifugal blower is reduced, is carried High centrifugal blower 10 overcomes the ability of resistance when running, it is achieved thereby that the enhancing of kitchen ventilator smoking effect so that kitchen ventilator Suction it is more powerful, detergent power is more prominent.In addition, the range hood structure is simple, scheme is easily achieved, for kitchen ring The high-efficient purification in border is of great significance.

Continue referring to Fig. 1, in the present embodiment, which can also include the oil installed in 30 bottom of exhaust fume collecting hood component Cup assembly 20.Kitchen ventilator flows to lubricating cup component through its internal oil duct at work, through the grease that strainer filtering is separated In 20, to realize the collection to grease and fluid, so as to reduce pollution of the culinary art waste oil to kitchen environment, protect to a certain extent The cleanliness factor of kitchen operation environment is demonstrate,proved.Moreover, the bottom by the way that lubricating cup component 20 to be arranged on to exhaust fume collecting hood component 30, reduces Because fluid drops to the security risk triggered on cooking stove, the processing safety of the present embodiment kitchen ventilator is further increased.

Continue referring to Fig. 1, in the present embodiment, which can also include air deflection assemblies 40.Wherein, wind deflector group Part 40 is connected by driven connecting rod mechanism with exhaust fume collecting hood component 30.When kitchen ventilator works, start driven connecting rod mechanism, drive wind-guiding Plate component 40 is opened, and to form effective negative pressuren zone on exhaust fume collecting hood component 30, so that oil smoke be gathered, and then realizes oil smoke Reliable discharge.

Continue referring to Fig. 1, in the present embodiment, which can also include being used to be controlled the circuit of kitchen ventilator Electric appliance case assembly 50.Wherein, electric appliance case assembly 50 is installed on casing of kitchen ventilator 60.

Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations； Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that： It can still modify the technical solution described in previous embodiment, either to which part or all technical characteristic Carry out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from the utility model embodiment The scope of technical solution.

Claims (10)

1. a kind of centrifugal blower, will discharge from the gas that air inlet enters by air outlet (15), including volute of blower (11), setting In the internal impeller (13) of the volute of blower (11) and the motor (14) for driving the impeller (13) to rotate, its feature exists In further including the chimb (121) for being stopped to the air-flow for flowing backward to the air inlet；

The chimb (121) is arranged on the air inlet, and the inside of chimb (121) to the volute of blower (11) is prolonged Stretch, and stretch in the inner ring of the impeller (13).

2. centrifugal blower according to claim 1, it is characterised in that the air outlet (15) upward in the state of, with The impeller (13) is plane close to the end face of the air inlet, using the center of the impeller (13) as origin, establishes right angle seat The plane, is in turn divided into first quartile (1), the second quadrant (2) positioned at upper left, position positioned at upper right by mark system counterclockwise Third quadrant (3) in lower-left and the fourth quadrant (4) positioned at bottom right, starting point and the fourth quadrant of the chimb (121) (4) angle of initial position is 45-75 °, and the chimb (121) is located to be turned over 180 ° by the starting point and formed clockwise In region.

3. centrifugal blower according to claim 2, it is characterised in that the starting of the starting point and the fourth quadrant (4) The angle of position is 75 °, and terminal and the starting point of the chimb (121) are in 120 °.

4. centrifugal blower according to claim 2, it is characterised in that the initial line that rises of the chimb (121) includes transition circle Angle, and/or, the termination side of the chimb (121) includes knuckle.

5. centrifugal blower according to claim 1, it is characterised in that the chimb (121) is continuous whole coil structures.

6. centrifugal blower according to claim 1, it is characterised in that the chimb (121) includes multiple chimb units, respectively Circumferentially-spaced arrangement of the chimb unit along the air inlet.

7. centrifugal blower according to claim 1, it is characterised in that the chimb (121) extends to the volute of blower (11) length is not more than the 2/5 of the volute of blower (11) thickness.

8. centrifugal blower according to claim 1, it is characterised in that further include baffle ring (12), the chimb (121) is fixed On the baffle ring (12), the baffle ring (12) is removably mounted on the volute of blower (11).

9. centrifugal blower according to claim 8, it is characterised in that the baffle ring (12) is connected through a screw thread part and is installed on On the volute of blower (11).

10. a kind of kitchen ventilator, it is characterised in that appoint including casing of kitchen ventilator (60), exhaust fume collecting hood component (30) and claim 1-9 Centrifugal blower (10) described in one；

The centrifugal blower (10) is installed in the casing of kitchen ventilator (60), the air inlet and the exhaust fume collecting hood component (30) On inlet scoop connection, oil smoke is introduced, the air outlet (15) connects with the exhaust outlet on the casing of kitchen ventilator (60), general Oil smoke is discharged.