CN212157610U - Noise reduction structure for household small-sized fresh air machine - Google Patents
Noise reduction structure for household small-sized fresh air machine Download PDFInfo
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- CN212157610U CN212157610U CN202020489247.5U CN202020489247U CN212157610U CN 212157610 U CN212157610 U CN 212157610U CN 202020489247 U CN202020489247 U CN 202020489247U CN 212157610 U CN212157610 U CN 212157610U
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- fresh air
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Abstract
The utility model provides a structure of making an uproar falls for domestic small-size new fan, including new wind channel, the wind channel of airing exhaust, heat exchange core, fan blade, new wind channel and the wind channel of airing exhaust are the L type, the new wind air inlet air current of new wind channel is 45-53 with the contained angle of heat exchange core windward side, the new wind air outlet air current of new wind air outlet in new wind channel is 58-63 with the contained angle of heat exchange core windward side, the air inlet air current of airing exhaust of the wind air inlet of airing exhaust in the wind channel is 53-58 with the contained angle of heat exchange core windward side, the air outlet air current of airing exhaust of the wind channel of airing exhaust is 70-75 with the contained angle of heat exchange core windward side. Through optimizing the fresh air duct and the air exhaust duct, the air flow and the heat exchange core are ensured to be fully contacted, the impact of the air flow and the heat exchange core is reduced while the heat exchange efficiency is ensured, and therefore the noise is reduced.
Description
Technical Field
The utility model belongs to the technical field of the new trend air regenerating device, concretely relates to a structure of making an uproar falls for domestic small-size new fan.
Background
Modern families are increasingly demanding on ventilation, and fresh air fans become essential items of families, but most houses reserve machine installation space and are extremely small, so very high requirements are provided for the size of machines, the reduction of the size of the machines causes unsmooth air flow inside the machines and easy accumulation of air flow at a certain corner, the noise of the machines is increased, and the use of users is influenced. In order to reduce the noise of the whole machine after installation, manufacturers can only reduce the noise by installing a silencing device at the air outlet, but the method is not the primary and secondary, the machine and the silencing device are easy to resonate, and the noise is larger.
Disclosure of Invention
The utility model aims at providing a structure of making an uproar falls for domestic small-size new fan to it is big to solve current domestic small-size fan noise, influences the problem that the user used.
The specific scheme is as follows: a structure of making an uproar falls for domestic small-size new fan, including new wind channel, the wind channel of airing exhaust, heat exchange core, fan blade, its characterized in that: the fresh air duct and the exhaust air duct are both L-shaped, the included angle between the fresh air inlet flow of the fresh air inlet of the fresh air duct and the windward side of the heat exchange core is 45-53 degrees, the included angle between the fresh air outlet flow of the fresh air outlet of the fresh air duct and the windward side of the heat exchange core is 58-63 degrees, the included angle between the exhaust air inlet flow of the exhaust air inlet of the exhaust air duct and the windward side of the heat exchange core is 53-58 degrees, and the included angle between the exhaust air outlet flow of the exhaust air outlet of the exhaust air duct and the windward side of the heat exchange core is 70-75 degrees.
Preferably, the fan blade is of a feather wing imitation structure, the included angle of tangents of two end points of the arc at the tail part of the fan blade is 33-37 degrees, the maximum thickness of the middle part of the fan blade is 28-30mm, and the minimum thickness of the head part of the fan blade is 6.5-8.2 mm.
Has the advantages that: by optimizing the fresh air duct and the exhaust air duct, the full contact of the air flow and the heat exchange core is ensured, the impact of the air flow and the heat exchange core is reduced while the heat exchange efficiency is ensured, and the noise is reduced; the eddy formed by airflow at the volute tongue is reduced by optimizing the tail angle of the fan blade, the maximum thickness of the middle part of the blade and the minimum thickness of the head part of the blade, so that the noise is further reduced, and the efficiency of the fan is improved.
Drawings
Fig. 1 shows a schematic structural diagram of a household small fresh air machine of the present invention;
FIG. 2 shows a schematic diagram of a fresh air duct of the present invention;
FIG. 3 shows a schematic diagram of the air exhaust duct of the present invention;
fig. 4 shows the structural schematic diagram of the fan blade of the present invention.
The attached drawings are marked as follows: 1. the heat exchange core 10, the fresh air inlet 20, the fresh air outlet 30, the air exhaust inlet 40 and the air exhaust outlet.
Detailed Description
To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.
The present invention will now be further described with reference to the accompanying drawings and detailed description.
Examples
Referring to fig. 1 to 4, the present embodiment provides a noise reduction structure for a small household fresh air fan, which includes a fresh air duct, an exhaust air duct, a heat exchange core 1, and fan blades, wherein the fresh air duct and the exhaust air duct are L-shaped, an included angle between a fresh air intake flow of a fresh air intake port 10 of the fresh air duct and a windward side of the heat exchange core 1 is α 45 to 53 °, an included angle β between a fresh air exhaust flow of a fresh air outlet 20 of the fresh air duct and a windward side of the heat exchange core 1 is 58 to 63 °, an included angle γ between an exhaust air intake flow of an exhaust air intake port 30 of the exhaust air duct and a windward side of the heat exchange core 1 is 53 to 58 °, and an included angle between an exhaust air exhaust flow of an exhaust air outlet 40 of the exhaust air duct and a windward side of the heat exchange core 1 is 70.
As a preferred embodiment of this embodiment, the fan blade adopts a wing-like structure, an included angle between tangents of two end points of an arc at the tail of the fan blade is 33-37 °, a maximum thickness D of the middle part is 28-30mm, and a minimum thickness D of the head part is 6.5-8.2 mm.
While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (2)
1. The utility model provides a structure of making an uproar falls for domestic small-size new fan, includes fresh air duct, the wind channel of airing exhaust, heat exchange core, fan blade, its characterized in that: the fresh air duct and the exhaust air duct are both L-shaped, the included angle between the fresh air inlet flow of the fresh air inlet of the fresh air duct and the windward side of the heat exchange core is 45-53 degrees, the included angle between the fresh air outlet flow of the fresh air outlet of the fresh air duct and the windward side of the heat exchange core is 58-63 degrees, the included angle between the exhaust air inlet flow of the exhaust air inlet of the exhaust air duct and the windward side of the heat exchange core is 53-58 degrees, and the included angle between the exhaust air outlet flow of the exhaust air outlet of the exhaust air duct and the windward side of the heat exchange core is 70-75 degrees.
2. The noise reduction structure for the small-sized domestic fresh air machine according to claim 1, wherein: the fan blade adopts a feather wing imitation structure, the included angle of tangents of two end points of the tail arc of the fan blade is 33-37 degrees, the maximum thickness of the middle part is 28-30mm, and the minimum thickness of the head part is 6.5-8.2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020489247.5U CN212157610U (en) | 2020-04-07 | 2020-04-07 | Noise reduction structure for household small-sized fresh air machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020489247.5U CN212157610U (en) | 2020-04-07 | 2020-04-07 | Noise reduction structure for household small-sized fresh air machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212157610U true CN212157610U (en) | 2020-12-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020489247.5U Active CN212157610U (en) | 2020-04-07 | 2020-04-07 | Noise reduction structure for household small-sized fresh air machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN212157610U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115218316A (en) * | 2021-04-18 | 2022-10-21 | 大金工业株式会社 | Air treatment equipment |
-
2020
- 2020-04-07 CN CN202020489247.5U patent/CN212157610U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115218316A (en) * | 2021-04-18 | 2022-10-21 | 大金工业株式会社 | Air treatment equipment |
| CN115218316B (en) * | 2021-04-18 | 2024-04-12 | 大金工业株式会社 | Air treatment device |
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