Patent Application
20150247894
This application claims priority to Chinese Patent Application No. 201410070247.0 filed on Feb. 28, 2014, the contents of which are incorporated by reference herein.
The subject matter herein generally relates to a temperature control system.
The performance of electrical devices such as computers, servers, notebooks and so on at different temperatures (thermal performance) is a significant concern. Thermal performance reflects an operational state of the electrical device in different temperature environments. When the thermal performance of an electrical device is tested, a simulation of different temperature environments is needed.
Implementations of the present technology will now be described, by way of example only, with reference to the attached figures.
It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. In addition, numerous specific details are set forth in order to provide a thorough understanding of the embodiments described herein. However, it will be understood by those of ordinary skill in the art that the embodiments described herein can be practiced without these specific details. In other instances, methods, procedures and components have not been described in detail so as not to obscure the related relevant feature being described. Also, the description is not to be considered as limiting the scope of the embodiments described herein. The drawings are not necessarily to scale and the proportions of certain parts have been exaggerated to better illustrate details and features of the present disclosure.
Several definitions that apply throughout this disclosure will now be presented.
The term “coupled” is defined as connected, whether directly or indirectly through intervening components, and is not necessarily limited to physical connections. The connection can be such that the objects are permanently connected or releasably connected. The term “comprising,” when utilized, means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in the so-described combination, group, series and the like.
A first terminal of the fuse F receives an AC voltage. A second terminal of the fuse F is electrically coupled to a first terminal of the first switch 51. A second terminal of the first switch S1 is electrically coupled to the first power input terminal P0 and the second power input terminal J0. The first power output terminal P1 is electrically coupled to the winding unit M.
The second power output terminal P2 is electrically coupled to the first terminal of the switch unit K. The second terminal of the switch unit K is ideal. The control signal output terminal J1 is electrically coupled to the control signal input terminal P4. The second ground terminal J2 is electrically coupled to the first ground terminal P5.
The temperature increasing circuit 20 includes a number of resistors R1-R4, a number of lamps A1-A4, two first fans F1, F2, and two second switches S2, S3. First terminals of the first fan F1, the number of resistors R1-R4, and the second switches S2, S3 are electrically coupled to the third power output terminal P3. A second terminal of the first fan F1 is grounded via the first fan F2. Second terminals of the number of resistors R1-R4 are grounded. A second terminal of the second switch S2 is grounded via the lamps A1 and A2 connected in series. A second terminal of the second switch S3 is grounded via the lamps A3 and A4 connected in series. In at least one embodiment, the number of resistors R1-R4 are heating resistors. The number of lamps A1-A4 are incandescent lamps. The two first fans F1, F2 are located at a bottom of the test chamber 100.
The temperature decreasing circuit 30 includes a second fan TF and a number of third fans BF1-BF4. First terminals of the second fan TF and the third fans BF1, BF3 are electrically coupled to the third terminal of the switch unit K. A second terminal of the second fan TF is grounded. A second terminal of the third fan BF1 is grounded via the third fan BF2. A second terminal of the third fan BF3 is grounded via the third fan BF4. In at least one embodiment, the second fan TF is located at a top of the test chamber 100. The number of third fans BF1-BF4 are located beside the number of resistors R1-R4 respectively.
The illuminating circuit 40 includes a third switch S4 and an lamp A5. A first terminal of the third switch S4 is electrically coupled to the second terminal of the fuse F. A second terminal of the third switch S4 is grounded via the lamp A5. In at least one embodiment, the lamp A5 is a fluorescent lamp.
In use, the first switch S1 is closed, the power supply 11 and the temperature controller 12 receives the AC voltage and are powered on. The temperature controller 12 detects a temperature in the test chamber 100. When the temperature in the test chamber 100 is lower than a predetermined temperature in the temperature controller 12, the control signal output terminal J1 of the temperature controller 12 outputs a heating control signal. The first power output terminal P1, the second power output terminal P2, and the third power output terminal P3 output power on signals respectively.
The winding unit M receives the power on signal from the first power output terminal P1 and is powered on. The switch unit K is closed. The second terminal and the third terminal of the switch unit K are electrically connected. The first terminal and the third terminal of the switch unit K are cut off. The second fan TF and the number of third fans BF1-BF4 can not receive the power on signal from the second power output terminal P2 and are powered off. The number of resistors R1-R4 and the two first fans F1, F2 receives the power on signal from the third power output terminal P3 and are powered on. The number of resistors R1-R4 heat in the test chamber 100. The temperature in the test chamber 100 is increased. The two first fans F1, F2 rotate and dissipate heat for the bottom of the test chamber 100.
In the working process, the second switches S2, S3 are selectively closed. The lamps A1, A2, and the lamps A3, A4 selectively receive the power on signal from the third power output terminal P3. The lamps A1, A2, or the lamps A3, A4 are powered on. The temperature in the test chamber 100 is increased to a required value.
When the temperature in the test chamber 100 is higher than the predetermined temperature in the temperature controller 12, the control signal output terminal J1 of the temperature controller 12 outputs a cooling control signal. The first power output terminal P1, and the third power output terminal P3 output power off signals respectively. The second power output terminal P2 outputs a power on signal.
The winding unit M can not receive the power on signal from the first power output terminal P1 and is powered off. The switch unit K is opened. The second terminal and the third terminal of the switch unit K are cut off. The first terminal and the third terminal of the switch unit K are electrically connected. The second fan TF and the number of third fans BF1-BF4 receive the power on signal from the second power output terminal P2 and are powered on. The number of resistors R1-R4 and the two first fans F1, F2 can not receive the power on signal from the third power output terminal P3 and are powered off. The number of third fans BF1-BF4 rotate and dissipate heat for the corresponding resistors R1-R4. The temperature in the test chamber 100 is decreased. The second fan TF rotate and dissipate heat for the top of the test chamber 100.
In the working process, the third switch S4 is closed as required, the lamp A5 receives the AC voltage and emits light in the test chamber 100. The fuse F protects the power supply 11 and the temperature controller 12 from being damaged when there is an over current in the system.
The embodiments shown and described above are only examples. Many details are often found in the art such as the other features of a printed circuit board. Therefore, many such details are neither shown nor described. Even though numerous characteristics and advantages of the present technology have been set forth in the foregoing description, together with details of the structure and function of the present disclosure, the disclosure is illustrative only, and changes may be made in the detail, including in matters of shape, size and arrangement of the parts within the principles of the present disclosure up to, and including the full extent established by the broad general meaning of the terms used in the claims. It will therefore be appreciated that the embodiments described above may be modified within the scope of the claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201410070247.0 | Feb 2014 | CN | national |
