CN110186095B - Double-injection auxiliary-sucking range hood - Google Patents
Double-injection auxiliary-sucking range hood Download PDFInfo
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- CN110186095B CN110186095B CN201910558678.4A CN201910558678A CN110186095B CN 110186095 B CN110186095 B CN 110186095B CN 201910558678 A CN201910558678 A CN 201910558678A CN 110186095 B CN110186095 B CN 110186095B
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- air inlet
- range hood
- injection
- impeller
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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
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a double-injection-assisted range hood, which comprises a range hood body, a smoke collecting hood arranged below the range hood body, a first injection device and a second injection device, wherein the first injection device is arranged below the range hood body; an air inlet is formed in the smoke collecting cover, an air outlet is formed in the upper portion of the smoke collecting cover body, the first injection device is arranged at the air inlet, and the second injection device is arranged at the air outlet; the invention increases the air quantity of the range hood by arranging the double-guide port.
Description
Technical Field
The invention relates to the field of kitchen range hoods, in particular to a double-injection auxiliary-suction range hood.
Background
The range hood is one of the indispensable kitchen household appliances in modern family life, and provides a lot of convenience for users in the cooking process, but along with the progress of scientific technology, the requirements of people on the range hood are continuously improved. In the prior art, a smoke collecting cavity is usually stretched, as shown in fig. 1, a simple square air inlet is arranged at the smoke collecting cavity, cooking fume enters an air suction port of an impeller through the square air inlet and the smoke collecting cavity, and in the process, part of air quantity can be blocked by a volute around the air suction port of the impeller, so that wind resistance is generated, and the air quantity of the smoke collecting cavity is not beneficial to the improvement of the air quantity of the smoke collecting cavity; and, the oil smoke that produces in the culinary art in-process can not be absorbed by the lampblack absorber completely, always has some oil smoke to escape to the kitchen space in, influences indoor environment, reduces the quality of life. The defects in the prior art in the two points can influence the efficiency of the range hood.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention aims to provide the double-injection-assisted range hood, which increases the air quantity of the range hood by arranging the double injection ports.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
The double-injection auxiliary-suction range hood comprises a range hood body, a smoke collecting hood arranged below the range hood body, a first injection device and a second injection device; an air inlet is formed in the smoke collecting cover, an air outlet is formed in the upper portion of the smoke collecting cover body, the air inlet is provided with a first injection device, and the air outlet is provided with a second injection device.
Further, the first injection device comprises a guide injection pipe and an air suction inlet of the range hood impeller, the guide injection pipe comprises a first air inlet arranged in the smoke collecting cavity, a second air inlet arranged in front of the impeller and an annular side wall connecting the first air inlet and the second air inlet, a gap is arranged between the second air inlet and the air suction inlet of the impeller, the radial size of the second air inlet is smaller than that of the first air inlet, and meanwhile, the radial size of the second air inlet is smaller than that of the air suction inlet of the impeller; the air outlet is a reducing pipe, the radial dimension of an outlet of the air outlet is smaller than that of an inlet, the second injection device comprises an injection pipe, the injection pipe is arranged on the air outlet and comprises an injection port and an injection section, the radial dimension of the injection port is larger than that of the air outlet, and a gap is formed between the injection port of the injection pipe and the air outlet.
Further, a space is arranged between the second air inlet and the air suction inlet of the impeller, and the plane where the second air inlet is located is separated from the plane where the air suction inlet of the impeller is located.
Further, the second air inlet is nested in the air suction opening of the impeller, and a gap is arranged between the second air inlet and the air suction opening of the impeller.
Further, a plurality of auxiliary air inlets are arranged around the first air inlet in the smoke collecting cavity, and the auxiliary air inlets are used for communicating the outside with gaps arranged between the outside and the air suction openings of the second air inlet and the impeller.
Further, the air outlet is nested in the injection pipe.
Further, the ratio of the diameter of the second air inlet to the diameter of the air inlet of the impeller is between 0.5 and 0.9.
Further, the ratio of the diameter of the air outlet to the diameter of the injection port of the injection pipe is between 0.5 and 0.9.
Further, the bus of the injection pipe is an arc line or a straight line.
Further, the bus of the guide injection pipe is an arc line or a straight line.
According to the invention, the injection devices are respectively arranged at the air inlet and the air outlet of the range hood, so that the flow rate of the oil smoke fluid sucked into the range hood is increased by utilizing the working principle of the venturi tube, the oil smoke can be prevented from escaping into the kitchen environment from the gap of the shell of the range hood, and the oil smoke sucking effect of the range hood is improved.
According to the preferred technical scheme, the flow guiding injection pipe is arranged in front of the impeller air suction opening of the range hood, the structure similar to the horn mouth is beneficial to guiding fluid into the impeller when the range hood works, and the working principle of the venturi pipe is utilized, so that the fluid flow rate at the second air inlet is greater than that at the first air inlet, the oil smoke enters the impeller at a higher speed, and the oil smoke is prevented from leaking from a gap between the air inlet and the impeller air suction opening at a lower flow rate.
The ejector tube is arranged at the air outlet of the range hood, the ejector principle of the venturi tube is also utilized, when the oil smoke is led out by the fan, the flow speed of fluid is increased through the air outlet with a reduced diameter, a negative pressure area is formed at the ejector tube, air around the ejector tube is also sucked into the ejector tube, and the oil smoke enters the flue along with the oil smoke, so that the part of the oil smoke dissipated in the kitchen enters the flue along with the flow of the air, and the oil smoke sucking effect of the range hood is improved.
According to the preferred technical scheme, when the fluid at the second air inlet enters the impeller at a relatively high flow speed, a negative pressure area is formed, and the oil smoke in the range hood shell enters the impeller along with the high-speed fluid and is discharged, so that the efficiency of oil smoke suction is enhanced, the deposition of the oil smoke in the range hood shell is reduced, and the cleaning workload of the range hood is reduced.
Drawings
Fig. 1 is a schematic view of an air inlet of a prior art range hood;
FIG. 2 is a schematic diagram of the structure of the present invention;
FIG. 3 is a second schematic diagram of the structure of the present invention;
FIG. 4 is a schematic view of the installation of the present invention;
FIG. 5 is a schematic view of an ejector tube according to a third embodiment of the present invention;
fig. 6 is a schematic diagram of an auxiliary air intake according to a third embodiment of the invention.
Detailed Description
In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In order to clearly illustrate the design concept of the present invention, the present invention will be described with reference to examples.
The invention relates to a range hood, which comprises a range hood body, a fume collecting hood, a first injection device and a second injection device, wherein the fume collecting hood is arranged below the range hood body; an air inlet is formed in the smoke collecting cover, an air outlet is formed in the upper portion of the smoke collecting cover body, the air inlet is provided with a first injection device, and the air outlet is provided with a second injection device.
In order to more clearly illustrate the technical scheme of the invention, the following description is given by way of specific examples.
Example 1
As shown in fig. 2 and 3, the range hood provided by the invention comprises a range hood body 1, a smoke collecting cavity 2, a first injection device and a second injection device; the first injection device comprises a guide injection pipe 3 and an air suction inlet of an impeller 5 of the range hood, the guide injection pipe 3 is arranged between the smoke collecting cavity 2 and the impeller 5, the guide injection pipe 3 comprises a first air inlet 3-1 arranged in the smoke collecting cavity 2, a second air inlet 3-2 arranged in front of the impeller 5 and an annular side wall connecting the two, the second air inlet 3-2 is adjacently arranged in front of the air suction inlet of the impeller 5, the radial size of the second air inlet 3-2 is smaller than the radial size of the first air inlet 3-1, meanwhile, the radial size of the second air inlet 3-2 is smaller than the radial size of the air suction inlet of the impeller 5, and the guide injection pipe 3 and the air suction inlet of the impeller 5 form an injection structure along the direction from the first air inlet 3-1 to the second air inlet 3-2; the range hood body 1 comprises a fan 6, an air outlet 7 is formed in the fan 6, the air outlet 7 is a reducing pipe, the radial size of an outlet of the air outlet is smaller than that of an inlet, the second injection device comprises an injection pipe 8, the air outlet 7 is provided with the injection pipe 8, the injection pipe 8 comprises an injection port and an injection section which are mutually connected, the diameter of the injection port is larger than that of the injection pipe, the injection port of the injection pipe is sleeved on the air outlet, and a gap exists between the injection port and the air outlet in the radial direction.
In the above example, the side-draft range hood is provided with the diversion injection pipe 3, so that the structure similar to a horn mouth is beneficial to guiding fluid into the impeller 5 when the range hood works, and the working principle of the venturi tube is utilized, the fluid flow rate at the second air inlet 3-2 is higher than that at the first air inlet 3-1, so that the oil smoke enters the impeller 5 at a higher speed, and the oil smoke is prevented from leaking from a gap between the air inlet and the air suction inlet of the impeller 5 at a lower flow rate.
The ejector tube 8 is arranged at the air outlet 7 of the range hood, the ejector principle of the venturi tube is also utilized, when the oil smoke is led out by the fan, the flow velocity of fluid is increased through the air outlet with reduced diameter, a negative pressure area is formed at the gap between the ejector tube 8 and the air outlet, air around the ejector tube 8 is also sucked into the ejector tube 8, and along with the oil smoke entering the flue, the part of the oil smoke dissipated in the kitchen enters the flue along with the flow of the air, so that the effect of the oil smoke sucking of the range hood is improved.
Example two
As shown in fig. 2 and 3, the range hood provided by the invention comprises a range hood body 1, a smoke collecting cavity 2, an impeller 5, a first injection device and a second injection device; the first injection device comprises a guide injection pipe 3 and an air suction inlet of an impeller 5 of the range hood, the guide injection pipe 3 is arranged between the smoke collecting cavity 2 and the impeller 5, the guide injection pipe 3 comprises a first air inlet 3-1 arranged in the smoke collecting cavity 2, a second air inlet 3-2 arranged in front of the impeller 5 and an annular side wall connecting the two, the second air inlet 3-2 is adjacently arranged in front of the air suction inlet of the impeller 5, the radial size of the second air inlet 3-2 is smaller than the radial size of the first air inlet 3-1, and the guide injection pipe 3 forms an injection structure along the direction from the first air inlet 3-1 to the second air inlet 3-2; the range hood body 1 comprises a fan 6, an air outlet 7 is formed in the fan 6, the air outlet 7 is a reducing pipe, the radial size of an outlet of the air outlet is smaller than that of an inlet, the second injection device comprises an injection pipe 8, the air outlet 7 is provided with the injection pipe 8, the injection pipe 8 comprises an injection port and an injection section which are mutually connected, the diameter of the injection port is larger than that of the injection pipe, the injection port of the injection pipe is sleeved on the air outlet, and a gap exists between the injection port and the air outlet in the radial direction.
As shown in fig. 2, a space is provided between the second air inlet 3-2 and the air suction inlet of the impeller 5, and the plane of the second air inlet 3-2 is separated from the plane of the air suction inlet of the impeller 5.
In the above example, the first air inlet 3-1 and the second air inlet 3-2 are both circular, and meanwhile, the axes of the two are the same, and the guide injection pipe 3 makes the first air inlet 3-1 fixed on the panel in the smoke collecting cavity 2 through the screw, so that the guide injection pipe 3 is fixedly arranged in front of the impeller 5. When the range hood is used for sucking the oil smoke, a large amount of oil smoke enters the smoke collecting cavity 2 and then enters the guide injection pipe 3, and enters the air suction inlet of the impeller 5 from the second air inlet 3-2 along with the guide effect of the annular side wall, and meanwhile, the oil smoke which escapes from a gap of a range hood shell to the inside of the range hood cavity is sucked into the impeller 5 by a negative pressure area formed by high-speed flowing of fluid, so that the overall oil smoke sucking efficiency of the range hood is improved, the deposition of the oil smoke in the shell of the range hood body 1 is reduced, and the cleaning workload of the range hood is reduced.
As shown in fig. 4, in the smoke collecting cavity of the range hood, an auxiliary air inlet 4 is respectively arranged at the left and right sides of the first air inlet 3-1, the auxiliary air inlet 4 is a fence type, the auxiliary air inlet 4 is arranged on the shell of the range hood body 1, the auxiliary air inlet 4 is not communicated with the impeller 5, a kitchen environment space is communicated with a gap arranged between the second air inlet 3-2 and the air suction inlet of the impeller 5, and in the working process of the range hood, the shape of the guide injection pipe 3 utilizes the working principle of a venturi tube, a negative pressure area is generated at the air suction inlet of the impeller 5, suction is generated at the auxiliary air inlet 4, the range of the range hood for sucking smoke is increased under the condition that the power of a fan is not increased, and the effect of sucking smoke is improved.
As shown in fig. 2, the generatrix of the annular side wall on the guide injection pipe 3 is an arc, the annular side wall is an arc concave surface, and the arc concave surface forms the guide surface of the guide injection pipe 3. The guide injection pipe 3 is of an integrated structure, and the ratio of the diameter of the second air inlet 3-2 in the guide injection pipe 3 to the diameter of the air inlet of the impeller 5 is 0.5-0.9. The first air inlet 3-1 and the second air inlet 3-2 are circular, and meanwhile, the axes of the first air inlet 3-1 and the second air inlet 3-2 are the same, the guide injection pipe 3 is arranged right in front of the impeller 5, and a space is arranged between the second air inlet 3-2 and the impeller 5.
As shown in fig. 3, the two ends of the injection pipe 8 are columnar, the middle injection pipe section is columnar, and the radial dimension of the middle injection pipe section is smaller than that of the ports at the two ends. An interval is arranged between an air outlet 7 of the range hood and an injection pipe 8, an upper port of the injection pipe 8 is communicated with a flue through a hose, and a check valve is arranged in the air outlet 7 to prevent the oil smoke in the public flue from returning to a kitchen. The ratio of the diameter of the air outlet 7 to the diameter of the injection port of the injection pipe 8 is also between 0.5 and 0.9.
In the above example, when the range hood is sucking oil smoke, a large amount of oil smoke enters the smoke collecting cavity 2, enters the diversion injection pipe 3, and is injected twice, so that the smoke collecting area of the range hood is increased, the effect of sucking oil smoke is improved, meanwhile, when the ratio of the diameter of the second air inlet 3-2 in the diversion injection pipe 3 to the diameter of the air suction opening of the impeller 5 and the ratio of the diameter of the air outlet 7 to the diameter of the injection opening of the injection pipe 8 are smaller than 0.5, the resistance of the air outlet is too large to facilitate the oil smoke sucking, and when the ratio is larger than 0.9, the injection effect is not obvious, and the oil smoke sucking efficiency of the range hood is not increased.
Example III
As shown in fig. 2 and 3, the range hood provided by the invention comprises a range hood body 1, a smoke collecting cavity 2, an impeller 5, a first injection device and a second injection device; the first injection device comprises a guide injection pipe 3 and an air suction inlet of an impeller 5 of the range hood, the guide injection pipe 3 is arranged between the smoke collecting cavity 2 and the impeller 5, the guide injection pipe 3 comprises a first air inlet 3-1 arranged in the smoke collecting cavity 2, a second air inlet 3-2 arranged in front of the impeller 5 and an annular side wall connecting the two, the second air inlet 3-2 is adjacently arranged in front of the air suction inlet of the impeller 5, the radial size of the second air inlet 3-2 is smaller than the radial size of the first air inlet 3-1, and the guide injection pipe 3 forms an injection structure along the direction from the first air inlet 3-1 to the second air inlet 3-2; the range hood body 1 comprises a fan 6, an air outlet 7 is formed in the fan 6, the air outlet 7 is a reducing pipe, the radial size of an outlet of the air outlet is smaller than that of an inlet, the second injection device comprises an injection pipe 8, the air outlet 7 is provided with the injection pipe 8, the injection pipe 8 comprises an injection port and an injection section which are mutually connected, the diameter of the injection port is larger than that of the injection pipe, the injection port of the injection pipe is sleeved on the air outlet, and a gap exists between the injection port and the air outlet in the radial direction.
In this embodiment, the other technical features are not different from the foregoing embodiments, and are characterized in that the second air inlet 3-2 is nested in the air suction opening of the impeller 5, and a gap is provided between the second air inlet 3-2 and the air suction opening of the impeller 5. In the example, the oil smoke dissipated into the cavity of the range hood body 1 from the gap of the range hood shell is sucked into the impeller 5 by a negative pressure area formed by high-speed flow of fluid, so that the overall oil smoke sucking efficiency of the range hood is improved, the deposition of the oil smoke in the shell of the range hood body 1 is reduced, and the cleaning workload of the range hood is reduced.
The generating line of annular lateral wall is sharp, and the cross section of this water conservancy diversion is drawn and is drawn the pipe 3 and is trapezoidal, and equally, this water conservancy diversion draws the pipe 3 to play the effect of accelerating the fluid velocity of flow for the oil smoke gets into the inlet scoop of impeller 5 and accelerates, promotes oil smoke absorption efficiency, in addition, in this embodiment, first air intake 3-1 is the rectangle in the water conservancy diversion draw the pipe 3, and second air intake 3-2 is circular.
In this embodiment, the bus of the injection section of the injection pipe 8 is an arc, and referring to fig. 5, the air outlet 7 of the range hood body 1 is nested in the injection port of the injection pipe 8. Referring to fig. 6, an auxiliary air inlet 4 is respectively arranged at the left side and the right side of the first guide injection pipe 3-1, and two auxiliary air inlets 4 are arranged on the shell of the range hood body 1 below the first guide injection pipe 3-1.
In the above example, a plurality of auxiliary air inlets are arranged, so that the smoke collecting range of the range hood is further increased, and the effect of smoke exhaust is improved.
It should be noted that some of the structures may be selected differently than the specific examples given above. For example, the shape of the first air inlet in the guide injection pipe can have various forms, such as a round shape, a rectangular shape or an oval shape; the shape of the diversion injection pipe can be various, and the diversion injection pipe accords with the injection principle of a venturi pipe; the shape of the injection pipe is various, and the injection pipe accords with the injection principle of the Venturi pipe; etc., which are made by those skilled in the art based on their basic skills based on understanding the idea of the invention, and are not exemplified here.
Finally, it is to be understood that the above embodiments are merely exemplary embodiments employed for the purpose of illustrating the principles of the present invention, however, the present invention is not limited thereto. Various modifications and improvements may be made by those skilled in the art without departing from the principles and spirit of the invention, and such modifications and improvements are also considered within the scope of the invention.
Claims (9)
1. The double-injection auxiliary-suction range hood is characterized by comprising a range hood body, a smoke collecting hood arranged below the range hood body, a first injection device and a second injection device; the smoke collecting hood is characterized in that an air inlet is formed in the smoke collecting hood, an air outlet is formed in the upper portion of the smoke collecting hood body, a first injection device is arranged at the air inlet, a second injection device is arranged at the air outlet, the first injection device comprises a flow guiding injection pipe and an air suction inlet of a smoke collecting hood impeller, the flow guiding injection pipe comprises a first air inlet arranged in a smoke collecting cavity of the smoke collecting hood, a second air inlet arranged in front of the impeller and an annular side wall connected with the first air inlet and the second air inlet, a gap is formed between the second air inlet and the air suction inlet of the impeller, the radial size of the second air inlet is smaller than that of the first air inlet, and meanwhile the radial size of the second air inlet is smaller than that of the air suction inlet of the impeller: the air outlet is a reducing pipe, the radial dimension of an outlet of the air outlet is smaller than that of an inlet, the second injection device comprises an injection pipe, the injection pipe is arranged on the air outlet and comprises an injection port and an injection section, the radial dimension of the injection port is larger than that of the air outlet, and a gap is formed between the injection port of the injection pipe and the air outlet.
2. The range hood of claim 1, wherein a space is provided between the second air inlet and the air suction inlet of the impeller, and the plane of the second air inlet is separated from the plane of the air suction inlet of the impeller.
3. The range hood of claim 1, wherein the second air inlet is nested within the air intake of the impeller, and a gap is provided between the second air inlet and the air intake of the impeller.
4. The range hood of claim 1, wherein a plurality of auxiliary air inlets are arranged in the smoke collecting cavity around the first air inlet, and the auxiliary air inlets are used for communicating the outside with a gap which is changed between the second air inlet and the air suction inlet of the impeller.
5. The range hood of claim 1 wherein the air outlet is nested within the injection port of the injection duct.
6. The range hood of claim 1 wherein the ratio of the diameter of the second air inlet to the diameter of the air inlet of the impeller is between 0.5 and 0.9.
7. The range hood of claim 1 wherein the ratio of the diameter of the air outlet to the diameter of the injection port of the injection tube is between 0.5 and 0.9.
8. The range hood of claim 1, wherein the busbar of the ejector tube is an arc or a sloped straight line.
9. The range hood of claim 1, wherein the busbar of the pilot injection duct is a circular arc or a straight line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910558678.4A CN110186095B (en) | 2019-06-26 | 2019-06-26 | Double-injection auxiliary-sucking range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910558678.4A CN110186095B (en) | 2019-06-26 | 2019-06-26 | Double-injection auxiliary-sucking range hood |
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| CN110186095A CN110186095A (en) | 2019-08-30 |
| CN110186095B true CN110186095B (en) | 2024-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910558678.4A Active CN110186095B (en) | 2019-06-26 | 2019-06-26 | Double-injection auxiliary-sucking range hood |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111156559B (en) * | 2020-02-27 | 2022-02-08 | 宁波方太厨具有限公司 | Range hood and control method thereof |
| CN111578340A (en) * | 2020-06-19 | 2020-08-25 | 杭州老板电器股份有限公司 | range hood |
| CN116182220B (en) * | 2023-04-12 | 2025-10-03 | 杭州老板电器股份有限公司 | A kitchen appliance |
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| CN2154417Y (en) * | 1992-05-28 | 1994-01-26 | 陈运风 | Efficient cooker hood for kitchen |
| CN2175889Y (en) * | 1993-11-24 | 1994-08-31 | 江照政 | Horn-shaped smoke suction port baffle |
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| CN210441281U (en) * | 2019-06-26 | 2020-05-01 | 杭州老板电器股份有限公司 | Double-ejection suction-assisting range hood |
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| CN110186095A (en) | 2019-08-30 |
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