CN107726409B - Non-planar range hood - Google Patents
Non-planar range hood Download PDFInfo
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- CN107726409B CN107726409B CN201711200644.5A CN201711200644A CN107726409B CN 107726409 B CN107726409 B CN 107726409B CN 201711200644 A CN201711200644 A CN 201711200644A CN 107726409 B CN107726409 B CN 107726409B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2035—Arrangement or mounting of filters
Abstract
A non-planar range hood with gas absorption speed of 0.1m3/s～2.0m3And s. The range hood is provided with a range hood main body, the range hood main body is provided with a shell, the shell is provided with n air inlet groups, each air inlet group is communicated with the same end of an air duct of the range hood, each air inlet group is of a single-hole structure or a porous structure, n is more than or equal to 2, and n is a positive integer. The outer surface of the housing serves as a guide surface in the moving direction of the soot, rather than forming a hood region for gathering the soot. The non-planar range hood is provided with the multiple air pipes, the air containing oil smoke particles can be prevented from contacting with the wind wheel, the outer surface of the shell can absorb oil smoke at multiple angles as a guide surface of the oil smoke moving direction and the multiple air inlet groups, the oil smoke can be prevented from escaping, the structure of the oil smoke air inlet pipe can increase the pressure difference formed by the smoke outlet and the outer part of the range hood main body, and the smoke absorption effect is greatly improved.
Description
Technical Field
The invention relates to the field of range hoods, in particular to a non-planar range hood.
Background
The fume exhauster is also called as fume exhauster, and is a kitchen electric appliance for purifying kitchen environment. The range hood is arranged above the kitchen stove, can quickly pump away wastes burnt by the stove and oil smoke harmful to human bodies generated in the cooking process, and exhaust the wastes and the oil smoke to the outside, reduces pollution, purifies air, and has the safety guarantee effects of gas defense and explosion prevention.
WHO reports that 34% of 430 thousands of people WHO died globally due to kitchen air pollution in 2012 suffered from stroke, 22% and 26% of chronic obstructive pulmonary disease and ischemic heart disease, respectively, and about 6% died from lung cancer.
In the prior art, the range hood has three forms of top suction, side suction and lower discharge. One side of the air inlet group machine body causes that the range hood can only effectively absorb the oil smoke in a single direction, and the oil smoke escapes to other directions, so that the range hood cannot absorb the oil smoke. Meanwhile, the wind wheel is directly contacted with the oil smoke, and oil smoke particles can be adhered to the wind wheel after long-term use, so that the wind wheel is loaded to work, the working efficiency of the wind wheel is seriously affected, and the integral smoking effect is reduced. Moreover, the pressure difference between the interior of the range hood and the environment is only produced by the high-speed running of the fan, so that the absorption efficiency of the range hood is greatly limited.
Therefore, aiming at the defects of the prior art, it is necessary to provide a non-planar range hood to solve the defects of the prior art.
Disclosure of Invention
The invention aims to provide a non-planar range hood to avoid the defects of the prior art. This non-planar lampblack absorber can avoid the air that contains the oil smoke particle to contact with the wind wheel, prevents oil smoke escape in the space simultaneously to the lampblack absorber forms powerful pressure differential with the environment, promotes the smoking effect greatly.
The above object of the present invention is achieved by the following technical means.
Provides a non-planar range hood, the speed of absorbing gas is 0.1m3/s～2.0m3S; the range hood is provided with a range hood main body, the range hood main body is provided with a shell, the shell is provided with n air inlet groups, each air inlet group is communicated with the same end of an air duct of the range hood, each air inlet group is of a single-hole structure or a porous structure, n is more than or equal to 2, and n is a positive integer.
Preferably, the outer surface of the housing is formed as a guide surface in a moving direction of the soot, rather than a hood region for gathering the soot.
The central point of each air inlet group is P0、P1、……、Pi、……、Pn-1(ii) a N is more than or equal to 2, i is more than or equal to 1 and less than or equal to n-1, and both i and n are positive integers, and any one central point P in the lowest position of the central points of the air inlet groups is taken as the central point0And establishing a three-dimensional coordinate system for the origin. In passing through P0And in a plane parallel to the horizontal plane, passing through P0And two mutually perpendicular straight lines are defined as X-axis and Y-axis, which will pass through P0And a line perpendicularly intersecting the X-axis and the Y-axis, respectively, is defined as a Z-axis, P0Coordinate in three-dimensional coordinate system is P0(X0,Y0,Z0)＝P0(0,0,0)。
Preferably, the coordinate of the central point of the n air inlet sets on the three-dimensional coordinate axis is P0(0,0,0)、P1(X1,Y1,Z1)、……、Pi(Xi,Yi,Zi)、……、Pn-1(Xn-1,Yn-1,Zn-1)，P0(0,0,0)≠Pi(Xi,Yi,Zi) And P isiTo Pn-1At least one of which is not 0.
The cigarette machine main part still is provided with n air inlet faces, and n air inlet face concatenates and constitutes the shell, every air inlet face has a corresponding air intake group.
n air inlet surfaces are respectively defined as S0、S1、...、Si、...、Sn-1Center point P of n air inlet sets0、P1、...、Pi、...、Pn-1Are respectively located at S0、S1、...、Si、...、Sn-1。
Furthermore, the air inlet surfaces are respectively in at least one of a plane structure or a non-plane structure, and any one air inlet surface is seamlessly spliced with other adjacent air inlet surfaces.
Preferably, the cigarette machine main body is further provided with an air draft assembly fixedly installed inside the outer shell.
The air flue is set to be a plurality of air pipes, the plurality of air pipes comprise a cleaning air inlet pipe and an oil smoke air inlet pipe, the cleaning air inlet pipe is communicated with the air inlet end of the air draft assembly in a seamless mode, and the oil smoke air inlet pipe is communicated with the smoke outlet of the range hood.
Further, the air inlet group is provided with a cleaning air inlet group communicated with the cleaning air inlet pipe and an oil smoke air inlet group communicated with the oil smoke air inlet pipe.
Defining the shell highest point as PmCoordinate is Pm(Xm,Ym,Zm) (ii) a The central point of the clean air inlet group is PClean air inlet groupCoordinate is PClean air inlet group(XClean air inlet group,YClean air inlet group,ZClean air inlet group) The central point of the oil smoke air inlet group is POil smoke air inlet groupCoordinate is POil smoke air inlet group(XOil smoke air inlet group,YOil smoke air inlet group,ZOil smoke air inlet group)，0.5≤ZClean air inlet group/Zm≤1，0≤ZOil smoke air inlet group/ZmLess than or equal to 0.5, and ZOil smoke air inlet group＜ZClean air inlet group。
Preferably, the oil smoke air inlet groups are provided with two or more groups.
Preferably, the oil smoke inlet set is symmetrically or asymmetrically distributed on the surface of the shell.
The oil smoke gas at the lower part preferentially flows into the smoke machine main body from the oil smoke air inlet group through the oil smoke air inlet pipe and is exhausted to the smoke exhaust port, clean air is sucked into the air exhaust assembly from the clean air inlet group through the clean air inlet pipe, and the oil smoke gas at different positions can find the nearest oil smoke air inlet group at the highest speed through the plurality of oil smoke air inlet groups.
Preferably, the cleaning air inlet pipe is of an independent structure or an end part converging structure.
Preferably, the oil smoke air inlet pipe is of an independent structure or an end part intersection structure.
Preferably, the position of the oil smoke air inlet pipe extending into the smoke outlet is the top of the oil smoke air inlet pipe, and the sum of the cross sectional areas of the top of the oil smoke air inlet pipe is SOil smoke air inlet pipeThe sum of the cross sectional areas of the communicated parts of the oil smoke air inlet pipe and the oil smoke air inlet group is SOil smoke air inlet pipe' the cross-sectional area of the smoke outlet is SSmoke outlet，SSmoke outlet>SOil smoke air inlet pipe＇>SOil smoke air inlet pipe，SSmoke outlet、SOil smoke air inlet pipe' and SOil smoke air inlet pipeAre all positive numbers.
When gas flows into the top of the oil smoke air inlet pipe from the communication position of the oil smoke air inlet pipe and the oil smoke air inlet group, the sum of the cross sectional areas is reduced, the gas is accelerated after entering the oil smoke air inlet pipe and finally enters the smoke outlet at the highest speed, the cross sectional area of the smoke outlet is the largest of the three areas, the pressure intensity of the smoke outlet area is reduced, and the pressure difference between the smoke outlet area and the outer part of the smoke machine main body is increased.
Further, the air draft assembly is provided with a motor, a wind wheel and a volute.
Preferably, the motor is in transmission connection with the wind wheel, the motor and the wind wheel are both arranged in the volute, the volute is fixedly arranged inside the cigarette machine main body, the air inlet end of the volute is communicated with one end of the cleaning air inlet pipe in a seamless mode, and the power supply input end of the motor is connected with an external circuit.
When the air draft assembly is started, air is sucked from the clean air inlet group through the clean air inlet pipe and is exhausted from the volute to the smoke exhaust port at a high speed, a low-pressure area is formed inside the air pipe and the main body of the range hood, a high-pressure area is arranged outside the shell, air with oil smoke particles flows to the smoke exhaust port from the oil smoke air inlet group below through the oil smoke air inlet pipe, and the oil smoke particles attached to the shell enter the air inlet group due to the guide surface effect of the shell.
Preferably, the cigarette machine main body is also provided with a filter screen;
the filter screen is arranged on the periphery of the cleaning air inlet group; or
The filter screen is arranged at the front end of the air inlet of the wind wheel; or
The filter screen is arranged at the communication part of the cleaning air inlet pipe and the volute; or
The filter screen is installed at the periphery of the oil smoke air inlet group.
Further, the velocity of the absorption gas was 0.2m3/s～0.90m3/s。
Preferably, the outer shell is a sphere, an ellipsoid, a cone or a partial sphere.
The invention discloses a non-planar range hood which is provided with a range hood main body, wherein the range hood main body is provided with a shell, the shell is provided with n air inlet groups, each air inlet group is respectively communicated with the same end part of an air duct of the range hood, each air inlet group is of a single-hole structure or a porous structure, n is more than or equal to 2, and n is a positive integer. The velocity of the absorption gas was 0.1m3/s～2.0m3And s. The non-planar range hood is provided with the multiple air pipes, the air containing oil smoke particles can be prevented from contacting with the wind wheel, the outer surface of the shell can absorb oil smoke at multiple angles as a guide surface of the oil smoke moving direction and the multiple air inlet groups, the oil smoke can be prevented from escaping, the structure of the oil smoke air inlet pipe can increase the pressure difference formed by the smoke outlet and the outer part of the range hood main body, and the smoke absorption effect is greatly improved.
Drawings
The invention is further illustrated by means of the attached drawings, the content of which is not in any way limiting.
Fig. 1 is a schematic view of an embodiment of a non-planar range hood according to the present invention.
FIG. 2 is a schematic diagram of Bernoulli effect of a non-planar range hood according to the present invention.
FIG. 3 is a schematic diagram of the entrainment effect of a non-planar range hood according to the present invention.
FIG. 4 is a schematic diagram of the coanda effect of a non-planar range hood according to the present invention.
FIG. 5 is a schematic diagram of the Venturi effect of a non-planar range hood according to the present invention.
Fig. 6 is a schematic diagram of a housing of embodiment 2 of a non-planar range hood according to the present invention, where a in fig. 6 is a front view, B in fig. 6 is a bottom view, and C in fig. 6 is a top view.
Fig. 7 is a schematic view of a housing of embodiment 3 of a non-planar range hood according to the present invention, where a in fig. 7 is a front view, B in fig. 7 is a bottom view, and C in fig. 7 is a side view.
Fig. 8 is a schematic view of an outer shell of a non-planar range hood according to an embodiment 4 of the present invention.
Fig. 9 is a schematic view of a test of efficiency of absorbing lampblack gas of embodiment 5 of the non-planar range hood disclosed by the invention.
In fig. 1-9, there are included:
a main body 100 of the cigarette machine,
A shell 110, a cleaning air inlet group 111, a lampblack air inlet group 112,
An air pipe 120, a clean air inlet pipe 121, an oil smoke air inlet pipe 122,
An air draft assembly 130, a motor 131, a wind wheel 132, a volute 133,
A smoke outlet 140,
A screen 200.
Detailed Description
The technical solution of the present invention is further illustrated by the following examples.
Example 1.
A non-planar range hood is provided with a range hood main body 100, the range hood main body 100 is provided with a shell 110, the shell 110 is provided with n air inlet groups, each air inlet group is respectively communicated with the same end part of an air duct of the range hood, each air inlet group is of a single-hole structure or a porous structure, n is more than or equal to 2, and n is a positive integer.
The outer surface of the housing 110 serves as a guide surface in the moving direction of the soot, rather than forming a hood region for gathering the soot.
The central point of each air inlet group is P0、P1、……、Pi、……、Pn-1(ii) a N is more than or equal to 2, i is more than or equal to 1 and less than or equal to n-1, and both i and n are positive integers, and any one central point P in the lowest position of the central points of the air inlet groups is taken as the central point0And establishing a three-dimensional coordinate system for the origin.
In passing through P0And in a plane parallel to the horizontal plane, passing through P0And two mutually perpendicular straight lines are defined as X-axis and Y-axis, which will pass through P0And a line perpendicularly intersecting the X-axis and the Y-axis, respectively, is defined as a Z-axis, P0Coordinate in three-dimensional coordinate system is P0(X0,Y0,Z0)＝P0(0,0,0)。
The coordinate of the central point of the n air inlet groups on the three-dimensional coordinate axis is P0(0,0,0)、P1(X1,Y1,Z1)、……、Pi(Xi,Yi,Zi)、……、Pn-1(Xn-1,Yn-1,Zn-1)，P0(0,0,0)≠Pi(Xi,Yi,Zi) And P isiTo Pn-1At least one of which is not 0. The cigarette machine main body 100 is further provided with n air inlet surfaces, the n air inlet surfaces are spliced to form the shell 110, and each air inlet surface is provided with a corresponding air inlet group.
n air inlet surfaces are respectively defined as S0、S1、...、Si、...、Sn-1Center point P of n air inlet sets0、P1、...、Pi、...、Pn-1Are respectively located at S0、S1、...、Si、...、Sn-1. The air inlet surface is at least one of a plane structure or a non-plane structure, and any one of the air inlet surfaces is connected with the air inlet surfaceThe wind surface is seamlessly spliced with other adjacent wind inlet surfaces. The cigarette maker body 100 is also provided with a ventilation assembly 130 fixedly mounted to the interior of the outer shell 110.
The air duct is set to be a multi-air duct 120, the multi-air duct 120 comprises a cleaning air inlet pipe 121 and an oil smoke air inlet pipe 122, the cleaning air inlet pipe 121 is communicated with the air inlet end of the air draft assembly 130 in a seamless mode, and the oil smoke air inlet pipe 122 is communicated with the smoke outlet 140 of the range hood. The air inlet group is provided with a cleaning air inlet group 111 for communicating with a cleaning air inlet pipe 121 and a lampblack air inlet group 112 for communicating with a lampblack air inlet pipe 122.
Defining the highest point of the housing 110 as PmCoordinate is Pm(Xm,Ym,Zm) (ii) a The central point of the clean air inlet group 111 is PClean air intake group 111Coordinate is PClean air intake group 111(XClean air intake group 111,YClean air intake group 111,ZClean air intake group 111) The central point of the oil smoke inlet set 112 is POil smoke air inlet set 112Coordinate is POil smoke air inlet set 112(XOil smoke air inlet set 112,YOil smoke air inlet set 112,ZOil smoke air inlet set 112)，0.5≤ZClean air intake group 111/Zm≤1，0≤ZOil smoke air inlet set 112/ZmLess than or equal to 0.5, and ZOil smoke air inlet set 112＜ZCleaning ofIntoTuyere Group of 111。
Because the horizontal position of the lampblack air inlet group 112 is lower than that of the cleaning air inlet group 111, lampblack gas positioned below preferentially flows into the cigarette machine main body 100 from the lampblack air inlet group 112 through the lampblack air inlet pipe 122 and is exhausted to the smoke exhaust port 140, clean air is sucked into the ventilation assembly 130 from the cleaning air inlet group 111 through the cleaning air inlet pipe 121, and the plurality of lampblack air inlet groups 112 can enable lampblack gas at different positions to find the nearest lampblack air inlet group 112 at the highest speed.
The oil smoke inlet set 112 is provided with two or more sets. The fume inlet set 112 is symmetrically or asymmetrically distributed on the surface of the housing 110.
The cleaning air inlet pipe 121 is an independent structure or an end intersection structure. The oil smoke inlet pipe 122 is an independent structure or an end intersection structure. The position where the oil smoke air inlet pipe 122 extends into the smoke outlet 140 is the top of the oil smoke air inlet pipe 122, and the sum of the cross sectional areas of the top of the oil smoke air inlet pipe 122 is SLampblack air inlet pipe 122The sum of the cross-sectional areas of the connection between the oil smoke inlet pipe 122 and the oil smoke inlet set 112 is SLampblack air inlet pipe 122' the cross-sectional area of the smoke discharge port 140 is SExhaust port 140，SExhaust port 140>SLampblack air inlet pipe 122＇>SLampblack air inlet pipe 122，SExhaust port 140、SLampblack air inlet pipe 122' and SLampblack air inlet pipe 122Are all positive numbers.
When the gas flows into the top of the oil smoke air inlet pipe 122 from the communication position of the oil smoke air inlet pipe 122 and the oil smoke air inlet group 112, the total cross sectional area is reduced, the gas is accelerated after entering the oil smoke air inlet pipe 122 and finally enters the smoke outlet 140 at the highest speed, the cross sectional area of the smoke outlet 140 is the largest of the three areas, the pressure of the smoke outlet 140 area is reduced, and the pressure difference between the smoke outlet 140 area and the outer part of the cigarette machine main body 100 is increased.
The housing 110 of this embodiment is a sphere, and the number n of the air inlet sets is 5. Wherein, the cleaning air inlet set 111 is provided with two sets, which are located near the top of the outer shell 110, the lampblack air inlet set 112 is provided with three sets, one of which is arranged at the bottom of the outer shell 110, and the other two sets are symmetrically distributed at the lower half part of the outer shell 110.
The two independent clean air inlet pipes 121 are arranged in the embodiment, one end of each clean air inlet pipe is communicated with the corresponding clean air inlet group 111 without a gap, and the other end of each clean air inlet pipe is communicated with the air inlet end of the air draft assembly 130 without a gap. Four oil smoke air inlet pipes 122 are provided, wherein one ends of two oil smoke air inlet pipes 122 are respectively communicated with the oil smoke air inlet group 112 distributed at the lower half part of the shell 110 without gaps. The other two oil smoke inlet pipes 122 are respectively communicated with the oil smoke inlet set 112 at the bottom of the housing 110 without gaps, and the other ends of the two oil smoke inlet pipes 122 are respectively intersected with the ends of the other two oil smoke inlet pipes 122. The ends of the four oil smoke inlet sets 112 are joined to form two oil smoke inlet pipes 122 respectively extending into the smoke outlet 140. The oil smoke inlet pipe 122 with the converged ends is 140 positions close to the smoke outletContinuing to decrease in cross-sectional area, the following relationship exists with the exhaust port 140: sExhaust port 140>SLampblack air inlet pipe 122＇>4SLampblack air inlet pipe 122。
The main body 100 of the cigarette maker of this embodiment is further provided with five filter screens 200, which are respectively arranged around the two cleaning air inlet sets 111 and around the three lampblack air inlet sets 112. The filter screen 200 is used for filtering oil smoke particles, and the filter screen 200 arranged in the cleaning air inlet group 111 can prevent air with oil smoke particles escaping to the upper space from entering the wind wheel 132, so that the efficiency of the range hood is negatively affected by the air wheel 132.
As shown in fig. 2, according to bernoulli effect, when the air draft assembly 130 of the present invention is started, the wind wheel 132 rotates at a high speed, the wind rotates through the clean air inlet set 111 and the clean air inlet pipe 121 to suck air, the air is accelerated by the wind wheel 132 and discharged to the smoke outlet 140 at a high speed, a strong pressure difference is formed between the smoke outlet 140 and the inside of the main body 100 of the range hood when the pressure drops, a low pressure area is formed between the air pipe 120 and the inside of the main body 100 of the range hood, and a high pressure area is formed outside the outer shell 110. The air with soot particles flows from the soot inlet set 112 located below through the soot inlet pipe 122 and then flows out from the smoke outlet 140, and the soot particles attached to the outer shell 110 enter the inlet set due to the guiding surface of the outer shell 110.
As shown in fig. 3, according to the entrainment effect, the clean air inlet set 111 entrains the upper air or the oil smoke escaping from the upper air in the environment, and the oil smoke air inlet set 112 entrains the oil smoke escaping from the lower air in the environment, so as to drive the far air in the environment to move toward the range hood to form the flow field entrainment effect.
As shown in fig. 4, according to the coanda effect, the outer surface of the housing 110 of the present invention serves as a guiding surface for the moving direction of the oil smoke, the air with oil smoke particles flows from the oil smoke inlet set 112 located below to the smoke outlet 140 through the oil smoke inlet pipe 122, the oil smoke particles attached to the housing 110 will also enter the air inlet set along the surface of the housing 110 and be exhausted to the outside, and the escaping oil smoke gas can be captured at 360 °.
The position of the oil fume inlet pipe 122 extending into the smoke outlet 140 of the invention is oil fumeThe sum of the cross-sectional areas of the top of the air inlet pipe 122 and the top of the oil smoke inlet pipe 122 is SLampblack air inlet pipe 122The sum of the cross-sectional areas of the connection between the oil smoke inlet pipe 122 and the oil smoke inlet set 112 is SLampblack air inlet pipe 122' the cross-sectional area of the smoke discharge port 140 is SExhaust port 140. The following relationship exists between the lampblack inlet pipe 122 and the smoke outlet 140 in the embodiment: sExhaust port 140>SLampblack air inlet pipe 122＇>4SLampblack air inlet pipe 122. As shown in fig. 5, according to the venturi effect, the instantaneous speed of the fume inlet pipe 122 when the airflow leaves from the top of the fume inlet pipe 122 is much higher than the speed of the airflow just entering the fume inlet pipe 122, and the airflow enters the position of the smoke outlet 140 with the largest cross-sectional area, and the speed drops sharply and the pressure rises sharply. The effect stack of venturi effect and bernoulli's principle makes the regional pressure of exhaust port 140 be less than shell 110 outside pressure far away, has increaseed the regional pressure difference with the lampblack absorber outside of exhaust port 140 greatly, has improved the absorption effect of this lampblack absorber.
It should be noted that there may be two cleaning air inlet sets 111, or one or more than two cleaning air inlet sets, and there may be three or two or more than three lampblack air inlet sets 112. And the fume inlet set 112 can be distributed on the surface of the outer shell 110 symmetrically or asymmetrically. The number of the cleaning air inlet pipes 121 can be two, or one or more than one. The number of the oil smoke inlet pipes 122 can be four, or two or more than two. The cleaning air inlet pipe 121 and the oil smoke inlet pipe 122 can be of an independent structure or an end intersection structure.
Likewise, the present invention screen 200 may be installed in a variety of ways, as follows: 1. the filter screen 200 is installed at the periphery of the cleaning inlet set 111. 2. The filter screen 200 is installed at the front end of the intake air of the wind wheel 132. 3. A screen 200 is installed at the place where the clean air inlet duct 121 communicates with the volute 133. 4. The filter screens 200 are installed around the oil smoke inlet set 112, and the 4 installation forms of the filter screens 200 can be used independently or simultaneously.
It should be noted that the hood region of the hood housing 110 refers to a smoke collecting region formed by the hood housing 110, and smoke generated by the stove below the hood mainly enters the smoke collecting region due to the hood region, is sucked into the air channel through the air inlet disposed above the hood region, and is finally discharged from the smoke outlet 140. In the range hood of the invention, the shell 110 is not used for forming a smoke gathering area, but used for forming an attached guide surface for moving oil smoke, and the oil smoke is not gathered in a space formed by the shell 110 and then is sucked away, but is moved from bottom to top along the surface of the shell 110 and is sucked into an air channel by a nearby air inlet group. Therefore, the non-covered region in the present invention is a region of the housing 110 that is not intended to collect soot, as compared to the covered region in the related art.
In order to avoid the existence of a filter screen 200 or other structures which are assembled at the end of the air duct and cause the air inlet group to be divided into a plurality of small air inlets, the small air inlets are mistakenly considered as different air inlet groups. Therefore, the air inlet group communicated with the same end part of the air duct is specially defined as the same air inlet group.
The non-planar range hood is provided with the multiple air pipes 120, so that air containing oil smoke particles can be prevented from contacting the wind wheel 132, the outer surface of the shell 110 can absorb oil smoke at multiple angles as a guide surface of the moving direction of the oil smoke and the multiple air inlet sets, the oil smoke can be prevented from escaping, the structure of the oil smoke air inlet pipe 122 can increase the pressure difference formed between the smoke outlet 140 and the outside of the range hood main body 100, and the smoking effect is greatly improved.
Example 2.
The non-planar efficient range hood has the same other characteristics as embodiment 1, except that the oil smoke inlet set 112 is provided with 5 sets, one set is arranged at the bottom of the outer shell 110, and the other 4 sets are symmetrically distributed at the lower half part of the outer shell 110, as shown in fig. 6. And both the 2 clean inlet groups 111 and the 5 fume inlet groups 112 are provided with a screen 200.
The number of the oil smoke air inlet pipes 122 is 6, wherein one end of 2 clean air inlet pipes 121 are respectively communicated with the oil smoke air inlet groups 112 distributed at the bottom of the shell 110 without gaps, in addition, 4 clean air inlet pipes 121 are respectively communicated with the oil smoke air inlet groups 112 positioned at the bottom of the shell 110 without gaps, every two ends of the 4 oil smoke air inlet pipes 122 are intersected, then the two ends are intersected with the other end which is communicated with the oil smoke air inlet groups 112 at the bottom of the shell 110 without gaps, and finally the 6 lower clean air inlet pipes are intersected into 2 oil smoke inlet ports 140 respectively.
In this embodiment, the oil smoke inlet set 112 is set to 5 sets, which can better increase the speed of the oil smoke particles attached to the non-planar housing 110 to find the nearest oil smoke inlet set 112 compared with embodiment 1.
The non-planar range hood is provided with the multiple air pipes 120, so that air containing oil smoke particles can be prevented from contacting the wind wheel 132, the outer surface of the shell 110 can absorb oil smoke at multiple angles as a guide surface of the moving direction of the oil smoke and the multiple air inlet sets, the oil smoke can be prevented from escaping, the structure of the oil smoke air inlet pipe 122 can increase the pressure difference formed between the smoke outlet 140 and the outside of the range hood main body 100, and the smoking effect is greatly improved.
Example 3.
The other characteristics of the non-planar high-efficiency range hood are the same as those of the embodiment 2, except that the oil smoke air inlet groups 112 are arranged into 9 groups, and 4 additional oil smoke air inlet groups 112 are symmetrically distributed on the maximum circumference of the central axis of the sphere of the vertical shell 110, as shown in fig. 7.
The number of the oil smoke inlet pipes 122 is 10, and the oil smoke inlet pipes 122 are converged in a similar manner to that in embodiment 2, and finally converged into 2 pieces which extend into the smoke outlet 140. And both the 2 clean inlet groups 111 and the 9 fume inlet groups 112 are provided with a screen 200.
In this embodiment, the oil smoke inlet set 112 is set to 9 sets, which can further increase the speed of the oil smoke particles attached to the non-planar housing 110 to find the nearest oil smoke inlet set 112 compared with embodiment 2.
The non-planar range hood is provided with the multiple air pipes 120, so that air containing oil smoke particles can be prevented from contacting the wind wheel 132, the outer surface of the shell 110 can absorb oil smoke at multiple angles as a guide surface of the moving direction of the oil smoke and the multiple air inlet sets, the oil smoke can be prevented from escaping, the structure of the oil smoke air inlet pipe 122 can increase the pressure difference formed between the smoke outlet 140 and the outside of the range hood main body 100, and the smoking effect is greatly improved.
Example 4.
A non-planar high-efficiency range hood is shown in figure 8, and other characteristics are the same as those of embodiment 1, except that a filter screen 200 is further installed at the front end of air inlet of a wind wheel 132. Therefore, the oil smoke particles escaping to the clean air inlet group 111 can be filtered by the double filter screens 200, and the oil smoke particles can not enter the wind wheel 132.
The non-planar range hood is provided with the multiple air pipes 120, so that air containing oil smoke particles can be prevented from contacting the wind wheel 132, the outer surface of the shell 110 can absorb oil smoke at multiple angles as a guide surface of the moving direction of the oil smoke and the multiple air inlet sets, the oil smoke can be prevented from escaping, the structure of the oil smoke air inlet pipe 122 can increase the pressure difference formed between the smoke outlet 140 and the outside of the range hood main body 100, and the smoking effect is greatly improved.
Example 5.
A non-planar high-efficiency range hood absorbs the test of the efficiency of oil smoke gas, as shown in figure 9: the smoke collecting chamber with the length, width and height of 2m 1.5m is filled with oil smoke gas, the non-planar high-efficiency range hood is started, the time for completely pumping the oil smoke gas is 1.125-22.5 s, and the speed for absorbing the oil smoke gas is 0.1m3/s～2.0m3And s. The optimal time is 2.25 s-10 s, and the speed of absorbing the oil smoke gas is 0.2m3/s～0.90m3/s。
The non-planar range hood is provided with the multiple air pipes 120, so that air containing oil smoke particles can be prevented from contacting the wind wheel 132, the outer surface of the shell 110 can absorb oil smoke at multiple angles as a guide surface of the moving direction of the oil smoke and the multiple air inlet sets, the oil smoke can be prevented from escaping, the structure of the oil smoke air inlet pipe 122 can increase the pressure difference formed between the smoke outlet 140 and the outside of the range hood main body 100, and the smoking effect is greatly improved.
Example 6.
The non-planar efficient range hood has the same other characteristics as those of the embodiment 1, except that the outer shell 110 of the embodiment is an ellipsoid.
The housing 110 of the present invention may be an ellipsoid, a sphere, a cone, or a partial sphere. The shape of the housing 110 does not affect the efficiency of the present invention for absorbing cooking fumes, and can also beautify the kitchen environment.
The non-planar range hood is provided with the multiple air pipes 120, so that air containing oil smoke particles can be prevented from contacting the wind wheel 132, the outer surface of the shell 110 can absorb oil smoke at multiple angles as a guide surface of the moving direction of the oil smoke and the multiple air inlet sets, the oil smoke can be prevented from escaping, the structure of the oil smoke air inlet pipe 122 can increase the pressure difference formed between the smoke outlet 140 and the outside of the range hood main body 100, and the smoking effect is greatly improved.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (8)
1. A non-planar range hood, its characterized in that: the velocity of the absorption gas was 0.1m3/s～2.0m3/s；
The range hood is provided with a range hood main body, the range hood main body is provided with a shell, the outer surface of the shell is used as a guide surface of the moving direction of oil smoke instead of forming a covering area for gathering the oil smoke, the shell is provided with n air inlet groups, each air inlet group is respectively communicated with the same end part of an air channel of the range hood, each air inlet group is of a single-hole structure or a porous structure, n is more than or equal to 2, and n is a positive integer;
the cigarette machine main body is also provided with an air draft assembly fixedly arranged inside the shell;
the air duct is provided with a plurality of air pipes, each air pipe comprises a cleaning air inlet pipe and an oil smoke air inlet pipe, the cleaning air inlet pipes are communicated with the air inlet ends of the air draft assemblies in a seamless mode, and the oil smoke air inlet pipes are communicated with the smoke outlet of the range hood;
the air inlet group is provided with a cleaning air inlet group communicated with the cleaning air inlet pipe and an oil smoke air inlet group communicated with the oil smoke air inlet pipe.
2. A non-planar range hood as defined in claim 1, wherein: the central point of each air inlet group is P0、P1、……、Pi、……、Pn-1(ii) a N is more than or equal to 2, i is more than or equal to 1 and less than or equal to n-1, and both i and n are positive integers, and the lowest central point of the air inlet group is taken as the lowest central pointAny one of the center points P in position0Establishing a three-dimensional coordinate system for the origin;
in passing through P0And in a plane parallel to the horizontal plane, passing through P0And two mutually perpendicular straight lines are defined as X-axis and Y-axis, which will pass through P0And a line perpendicularly intersecting the X-axis and the Y-axis, respectively, is defined as a Z-axis, P0Coordinate in three-dimensional coordinate system is P0(X0,Y0,Z0)＝P0(0,0,0)；
The coordinate of the central point of the n air inlet groups on the three-dimensional coordinate axis is P0(0,0,0)、P1(X1,Y1,Z1)、……、Pi(Xi,Yi,Zi)、……、Pn-1(Xn-1,Yn-1,Zn-1)，P0(0,0,0)≠Pi(Xi,Yi,Zi) And P isiTo Pn-1Has at least one Z-axis coordinate other than 0;
the cigarette machine main body is also provided with n air inlet surfaces which are spliced to form the shell, and each air inlet surface is provided with a corresponding air inlet group;
n air inlet surfaces are respectively defined as S0、S1、...、Si、...、Sn-1Center point P of n air inlet sets0、P1、...、Pi、...、Pn-1Are respectively located at S0、S1、...、Si、...、Sn-1；
The air inlet surfaces are respectively at least one of planar structures or non-planar structures, and any one air inlet surface is seamlessly spliced with other adjacent air inlet surfaces.
3. A non-planar range hood as defined in claim 2, wherein: defining the shell highest point as PmCoordinate is Pm(Xm,Ym,Zm) (ii) a The central point of the clean air inlet group is PClean air inlet groupCoordinate is PClean air inlet group(XClean air inlet group,YClean air inletGroup of,ZClean air inlet group) The central point of the oil smoke air inlet group is POil smoke air inlet groupCoordinate is POil smoke air inlet group(XOil smoke air inlet group,YOil smoke air inlet group,ZOil smoke air inlet group)，0.5≤ZClean air inlet group/Zm≤1，0≤ZOil smoke air inlet group/ZmLess than or equal to 0.5, and ZOil smoke air inlet group＜ZClean air inlet group；
The oil smoke air inlet group is provided with two or more groups;
the oil smoke inlet groups are symmetrically or asymmetrically distributed on the surface of the shell;
the oil smoke gas at the lower part preferentially flows into the smoke machine main body from the oil smoke air inlet group through the oil smoke air inlet pipe and is exhausted to the smoke exhaust port, clean air is sucked into the air exhaust assembly from the clean air inlet group through the clean air inlet pipe, and the oil smoke gas at different positions can find the nearest oil smoke air inlet group at the highest speed through the plurality of oil smoke air inlet groups.
4. A non-planar range hood as defined in claim 3, wherein: the cleaning air inlet pipe is of an independent structure or an end part intersection structure;
the oil smoke air inlet pipe is of an independent structure or an end part intersection structure.
5. A non-planar range hood as claimed in claim 4, wherein: the position of the oil smoke air inlet pipe extending into the smoke outlet is the top of the oil smoke air inlet pipe, and the sum of the cross sectional areas of the top of the oil smoke air inlet pipe is SOil smoke air inlet pipeThe sum of the cross sectional areas of the communicated parts of the oil smoke air inlet pipe and the oil smoke air inlet group is SOil smoke air inlet pipe' the cross-sectional area of the smoke outlet is SSmoke outlet，SSmoke outlet>SOil smoke air inlet pipe＇>SOil smoke air inlet pipe，SSmoke outlet、SOil smoke air inlet pipe' and SOil smoke air inlet pipeAre all positive numbers;
when gas flows into the top of the oil smoke air inlet pipe from the communication position of the oil smoke air inlet pipe and the oil smoke air inlet group, the sum of the cross sectional areas is reduced, the gas is accelerated after entering the oil smoke air inlet pipe and finally enters the smoke outlet at the highest speed, the cross sectional area of the smoke outlet is the largest of the three areas, the pressure intensity of the smoke outlet area is reduced, and the pressure difference between the smoke outlet area and the outer part of the smoke machine main body is increased.
6. A non-planar range hood as claimed in claim 5, wherein: the air draft assembly is provided with a motor, a wind wheel and a volute;
the motor is in transmission connection with the wind wheel, the motor and the wind wheel are both arranged in the volute, the volute is fixedly arranged in the cigarette machine main body, the air inlet end of the volute is in seamless communication with one end of the cleaning air inlet pipe, and the power supply input end of the motor is connected with an external circuit;
when the air draft assembly is started, air is sucked from the clean air inlet group through the clean air inlet pipe and is exhausted from the volute to the smoke exhaust port at a high speed, a low-pressure area is formed inside the air pipe and the main body of the range hood, a high-pressure area is arranged outside the shell, air with oil smoke particles flows to the smoke exhaust port from the oil smoke air inlet group below through the oil smoke air inlet pipe, and the oil smoke particles attached to the shell enter the air inlet group due to the guide surface effect of the shell.
7. A non-planar range hood as claimed in any one of claims 1 to 6, wherein: the cigarette machine main body is also provided with a filter screen;
the filter screen is arranged on the periphery of the cleaning air inlet group; or
The filter screen is arranged at the front end of the air inlet of the wind wheel; or
The filter screen is arranged at the communication part of the cleaning air inlet pipe and the volute; or
The filter screen is installed at the periphery of the oil smoke air inlet group.
8. A non-planar range hood as defined in claim 7, wherein: the velocity of the absorption gas is 0.2m3/s～0.90m3/s；
The shell is a sphere, an ellipsoid, a cone or a partial sphere.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711200644.5A CN107726409B (en) | 2017-11-27 | 2017-11-27 | Non-planar range hood |
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| CN201711200644.5A CN107726409B (en) | 2017-11-27 | 2017-11-27 | Non-planar range hood |
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| CN107726409A CN107726409A (en) | 2018-02-23 |
| CN107726409B true CN107726409B (en) | 2020-06-09 |
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| CN108253498B (en) * | 2018-03-07 | 2022-12-30 | 佛山市云米电器科技有限公司 | Range hood with vortex generating device |
| CN108151103B (en) * | 2018-03-07 | 2023-01-03 | 佛山市云米电器科技有限公司 | Range hood with detachable oil-smoke separator |
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| CN108253497B (en) * | 2018-03-07 | 2022-12-30 | 佛山市云米电器科技有限公司 | Range hood with oil smoke separator |
| CN108253490B (en) * | 2018-03-07 | 2023-01-03 | 佛山市云米电器科技有限公司 | Range hood with oil smoke separator |
| CN108413453B (en) * | 2018-03-07 | 2024-02-23 | 佛山市云米电器科技有限公司 | Multiple oil absorption and multiple deoiling range hood |
| CN108151104B (en) * | 2018-03-07 | 2023-01-03 | 佛山市云米电器科技有限公司 | Range hood capable of improving internal pressure difference |
| CN108266771B (en) * | 2018-03-07 | 2023-01-03 | 佛山市云米电器科技有限公司 | Range hood with oil smoke separation assembly |
| CN108180526B (en) * | 2018-03-07 | 2023-01-03 | 佛山市云米电器科技有限公司 | Non-planar range hood |
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| CN108413454B (en) * | 2018-03-07 | 2024-01-09 | 佛山市云米电器科技有限公司 | Fume exhaust fan with graduation for oil collecting device |
| CN108266770B (en) * | 2018-03-07 | 2023-01-03 | 佛山市云米电器科技有限公司 | Range hood with oil smoke subassembly in various temperature fields |
| CN108443924B (en) * | 2018-03-07 | 2024-01-09 | 佛山市云米电器科技有限公司 | Range hood with non-planar filter |
| CN108167907B (en) * | 2018-03-07 | 2022-12-30 | 佛山市云米电器科技有限公司 | Range hood with non-constant rotating speed |
| CN108266772B (en) * | 2018-03-07 | 2023-01-03 | 佛山市云米电器科技有限公司 | Thin eaves formula lampblack absorber |
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| CN107726409A (en) | 2018-02-23 |
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