Patent Application
20180181169
The present invention relates to a cooling device for a case, a cooling assembly for a case, and a cooling method for a case, and especially for an industrial chassis, such as a computer case.
Conventionally, there are two ways of heat dissipation for an industrial chassis, such as a computer case: by conduction and by air cooling. Dissipation by conduction means transferring the heat inside the chassis to outside via heat conductive metal, such as cooper. The air cooling is commonly used in a computer case, and leads the external lower-temperature air to flow into the case via a fan, thereby processing heat-exchange to the air inside the case to achieve the cooling.
However, since the air drawing capability of the fan is limited, the cooling effect of the air cooling may be insufficient when the temperature in the industry chassis is too high. In addition, the fan must be mounted on an air inlet, and thus the fan draws not only the air but also the dust into the case from the air inlet. Therefore, after use for a period of time, the interior of the case may be filled with dust, which becomes a burden for the user to clean the case.
To overcome the shortcomings, the present invention provides a cooling device for a case, a cooling assembly for a case, and a cooling method for a case to mitigate or obviate the aforementioned problems.
The main objective of the present invention is to provide a cooling device for a case, a cooling assembly for a case, and a cooling method for a case that can raise the cooling efficiency and accumulate the dust in a specific place to facilitate ease in cleaning.
The cooling method for a case comprises steps of:
The cooling device for a case comprises:
The cooling assembly for a case comprises:
By the Joule-Thomson Effect, when the external air is drawn into the air cooling box, the air staying and accumulating in the air cooling box is compressed since the air inlet is larger than the air outlet in area. Therefore, a positive-pressure region is formed in the air cooling box, and a negative-pressure region is formed in the case. As a result, when the compressed air enters the negative-pressure region, the air is expanded and lowers the temperature, thereby cooling the inner space of the case in the negative-pressure region.
In addition, when the air with relatively high pressure enters the inner space of the case from the air cooling box, the pressure is lowered to expand the air, and thus lowers the temperature by 5 to 8 degrees Celsius.
Furthermore, besides lowering the temperature of the blown-out air via the air cooling box with the air inlet and the air outlet of different areas, the present invention also has an advantage that gathering most of the dust in the air cooling box since the external air must pass through the air cooling box to enter the inner space of the case, and the air outlet is small in inner diameter. Therefore, the region to be cleaned is narrowed, thereby facilitating ease in cleaning.
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
The case 10 is hollow, and has an inner space 100, multiple side walls 11, a first outer wall 12, a second outer wall 13, a first inlet 14, a first outlet 15, a second outlet 16, and a cooling part 17.
With reference to
The first inlet 14 and the first outlet 15 are respectively mounted on two different side walls 11 of the case 10. In a preferred embodiment, the first inlet 14 is mounted on the first side wall 111, and is disposed adjacent to the second side wall 112. The first outlet 15 is mounted on the second side wall 112, and is disposed adjacent to the third side wall 113. But the positions of the first inlet 14 and the first outlet 15 are by no means limited to the abovementioned, as long as there is a sufficient distance between the first inlet 14 and the first outlet 15. The second outlet 16 is mounted on the third side wall 113, and is disposed adjacent to the fourth side wall 114. The cooling part 17 is mounted in the inner space 100 of the case 10, is mounted between the third side wall 113 and the fourth side wall 114, and is disposed adjacent to the second outlet 16. In a preferred embodiment, the cooling part 17 is a frame for mounting computer components, such as a CPU (Central Processing Unit). But in another preferred embodiment, the cooling part 17 may be a space, rather than a frame, for accommodating the computer components therein.
With reference to
In a preferred embodiment, an area ratio of the air inlet 21 to the air outlet 22 is preferably, but not limited to, from 30:1 to 50:1.
In a preferred embodiment, an area of the air cooling box 20 gradually decreases from the air inlet 21 to the air outlet 22. But the shape of the air cooling box 20 is by no means limited to the abovementioned.
With reference to
With reference to
The air discharging assembly 40 is mounted on the first outlet 15, and corresponds to the first outlet 15 in size and shape. The air discharging assembly 40 has an air discharging filter 41 and an air discharging device 42. The air discharging filter 41 is mounted on the outer wall of the case 10, and to be specific, is mounted on an outer surface of the second side wall 112. The air discharging filter 41 corresponds in position to the first outlet 15. The air discharging device 42 is mounted in the inner space 100 of the case 10, and is mounted on an inner wall of the first outlet 15. In a preferred embodiment, the air discharging device 42 is, but not limited to, a fan for discharging air.
In a preferred embodiment, a second outlet filter 51 is mounted on an outer surface of the third side wall 113, and corresponds to the second outlet 16 in position, size and shape.
With reference to
The first step (S1) is to draw external air. External cold air is drawn into an air cooling box 20 via a route through, in sequence, the air drawing filter 31, the air drawing device 32 and the air inlet 21 by the air drawing device 32 (fan). Then, the air stays and accumulates in the compression region 23 of the air cooling box 20.
The second step (S2) is to form positive pressure and negative pressure. The air is compressed in the compression region 23 of the air cooling box 20 since an amount of an air flow entering the air inlet 21 is larger than an amount of an air flow discharging from the air outlet 22, which is due to the relatively larger air inlet 21 and the relatively smaller air outlet 22. Therefore, a positive pressure region is formed in the compression region 23 of the air cooling box 20. A negative pressure region is formed as well in the inner space 100 of the case 10 since the flowing direction of the air is toward the inner space 100.
The third step (S3) is to cool the air. The air in the compression region 23 is compressed to reduce the volume, such that the compressed air suddenly expands when the compressed air discharges to the inner space 100 of the case 10. According to the Joule-Thomson Effect, when the volume suddenly increases, the temperature of the air is lowered accordingly. Thus, the air entering the inner space 100 has the function of cooling. In a preferred embodiment, the area ratio of the air inlet 21 to the air outlet 22 makes the temperature in the inner space 100 of the case 10 drop by 5 to 8 degrees Celsius.
When the cooling assembly or the cooling method is in use, the heat mainly comes from the cooling part 17, which is for mounting electronic equipment that is prone to produce heat, such as a CPU or power supply. To increase the cooling efficiency and to avoid dust accumulation, the present invention also has the following features.
First, the external air must pass through the air inlet 21 and air outlet 22 to enter the case 10, and the air inlet 21 is larger than the air outlet 22 in area, such that most of the dust is gathered and accumulates in the air cooling box 20 and does not enter the case 10, thereby facilitating ease in cleaning.
Second, with reference to
Third, with reference to
To sum up, the main advantages of the present invention is to lower the temperature of the air out of the air cooling box 20 via the different areas of the air outlet 22 and the air inlet 21. In addition, the external air must pass through the air cooling box 20 to enter the case 10, and the air outlet 22 is smaller than the air inlet 21, such that most of the dust is gathered and accumulates in the air cooling box 20. Therefore, the region to be cleaned is narrowed, thereby facilitating ease in cleaning.
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.
