Patent Application
20200025215
This application is based upon and claims priority under 35 U.S.C. 119 from China Patent Application No. 201810791936.9 filed on Jul. 18, 2018, which is hereby specifically incorporated herein by this reference thereto.
The present invention relates to a fan housing and a fan having the same, especially to a fan housing that has metal foam disposed in an air inlet.
With the progress of technology, processing speed of a computer has also been continuously improved. In order to prevent the computer from crashing and having shortened service life due to overheating, most of the computers are equipped with heat dissipating devices. The heat dissipating device dissipates heat generated by electronic components in the computer during operation of the computer, so as to keep the computer working normally.
One type of the heat dissipating devices installed in the computer is fan. A conventional fan has an impeller mounted in a housing. The impeller is driven to rotate by a motor and induces airflow to dissipate the heat generated by the electronic components. However, generally, heat conduction efficiency and heat dissipation efficiency of gas are worse than those of solid metal. Therefore, cooling efficiency of the conventional fan has its limitation.
In addition, since developing trends of the computers nowadays are thinning and miniaturization, sizes of the conventional fans are also reduced. Thus, the impeller of the conventional fan is disposed quite close to the housing. Consequently, when rotation speed of the impeller is increased to generate a strong airflow and to enhance heat dissipation efficiency of the conventional fan, the airflow applies perpendicular force onto a surface of the housing, and the force creates a high static pressure and produces high noise.
In view of the aforementioned problems, the main objective of the present invention is to provide a fan housing with a metal foam and a fan with the fan housing. With the metal foam, heat dissipation efficiency of the fan can be improved and noise made by the fan can also be reduced.
In order to achieve the aforementioned objective, the fan housing in accordance with the present invention has a main case and a foamed metal plate. The main case has an air inlet formed through the main case. The foamed metal plate is porous structured, is mounted in the air inlet of the main case, and is securely attached to the main case.
In order to achieve the aforementioned objective, the fan in accordance with the present invention has a fan housing and an impeller. The fan housing has a main case and a foamed metal plate. The main case has an air inlet formed through the main case. The foamed metal plate is porous structured, is mounted in the air inlet of the main case, and is securely attached to the main case. The impeller is mounted in the main case and has an air inlet side facing the air inlet of the main case. The foamed metal plate covers the impeller.
In order to achieve the aforementioned objective, the fan in accordance with the present invention has a fan housing and an impeller. The fan housing has a main case and a foamed metal plate. The main case has an air inlet formed through the main case. The foamed metal plate is porous structured, is mounted in the air inlet of the main case, and is securely attached to the main case. The impeller is mounted in the main case and has an air inlet side facing the air inlet of the main case. The foamed metal plate covers the impeller and the air inlet of the main case.
Hot air that is inhaled into the main case is forced to flow through pores in the foamed metal plate. Thus, heat in the hot air is conducted to the foamed metal plate and then to the main case. The heat in the hot air is dissipated to reduce temperature of the hot air in advance, and then the hot air with reduced temperature is exhaled out of the main case. Accordingly, the heat dissipation efficiency of the fan is improved. Moreover, since the foamed metal plate hinders flow of the hot air, the hot air flowing into the main case is reduced. Therefore, air pressure and flowing speed of the hot air flowing into the main case is reduced, such that the noise made by the fan is also reduced.
Other objectives, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
With reference to
With reference to
The foamed metal plate 20A, 20B is porous structured, is mounted in the air inlet 11 of the main case 10, and has an outer peripheral edge 21A, 21B. The outer peripheral edge 21A, 21B of the foamed metal plate 20A, 20B is securely attached to the main case 10. The foamed metal plate 20A, 20B is made of materials such as aluminum, nickel, cooper, or alloys thereof, which have good thermal conductivity.
As shown in
As shown in
With further reference to
With further reference to
With further reference to
As shown in
When the impeller 30 is driven to rotate by a motor, hot air outside the fan housing is inhaled into the main case 10, 10′, 10″ through the air inlet 11, 11′ of the main case 10, 10′, 10″. As the hot air passes through the air inlet 11, 11′ of the main case 10, 10′, 10″, the hot air is forced to flow through pores in the foamed metal plate 20A, 20B, 20C, 20D. The foamed metal plate 20A, 20B, 20C, 20D being porous structured increases contact area of the hot air with the foamed metal plate 20A, 20B, 20C, 20D. Thus, heat in the hot air is efficiently conducted to the foamed metal plate 20A, 20B, 20C, 20D, and the heat conducted to the foamed metal plate 20A, 20B, 20C, 20D is further conducted to the main case 10, 10′, 10″. Accordingly, the heat in the hot air is dissipated to reduce temperature of the hot air in advance, and then the hot air with reduced temperature is exhaled out of the main case 10, 10′, 10″ by the impeller 30. Since heat conduction efficiencies and heat dissipation efficiencies of the foamed metal plate 20A, 20B, 20C, 20D and the main case 10, 10′, 10″ that is made of metal are better than those of the air, heat dissipation efficiency of the fan is improved accordingly.
Moreover, when the hot air flows through the foamed metal plate 20A, 20B, 20C, 20D, the foamed metal plate 20A, 20B, 20C, 20D hinders flow of the hot air, which causes reduction of the hot air flowing into the main case 10, 10′, 10″. Therefore, air pressure and flowing speed of the hot air flowing into the main case 10, 10′, 10″ can be reduced, such that noise made by the fan is also reduced.
Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and features of the invention, the disclosure is illustrative only. Changes may be made in the details, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201810791936.9 | Jul 2018 | CN | national |
