A system configured to provide cooling of electronic equipment in a shelter in combination with an air conditioning (A/C) system. The system includes one or more blowers for drawing air into the shelter, a damper arrangement for controlling air exhaust. The system further includes a DC powered contr
A system configured to provide cooling of electronic equipment in a shelter in combination with an air conditioning (A/C) system. The system includes one or more blowers for drawing air into the shelter, a damper arrangement for controlling air exhaust. The system further includes a DC powered controller coupled to the one or more blowers, the damper arrangement, and the A/C system. The controller is configured to receive at least a first analog input signal associated with a shelter-interior temperature, a second analog input signal associated with a shelter-exterior temperature, and a plurality of alarm input signals and to generate the one or more first control signals to control blower rotational speed, the second control signal to open/close the damper arrangement, and a third control signal to inhibit/activate the A/C system based on at least the first analog input signal, or the second analog input signal, or a plurality of alarm input signals, or a combination of these.
대표청구항▼
1. A system for providing alternative cooling, in addition to an air conditioning (A/C) system, to a cabinet housing electrical equipment, the system comprising: a blower subsystem including one or more blowers for drawing air from outside of the cabinet into the cabinet, the blower subsystem compri
1. A system for providing alternative cooling, in addition to an air conditioning (A/C) system, to a cabinet housing electrical equipment, the system comprising: a blower subsystem including one or more blowers for drawing air from outside of the cabinet into the cabinet, the blower subsystem comprising a bank of blower units and a path of airflow from outside of the cabinet into the cabinet that is absent an evaporator element of an A/C unit;a damper subsystem including a louver arrangement for controlling air exhaust;a controller operated from a DC supply, the controller including a microprocessor having at least a first analog input, a second analog input, a plurality of alarm inputs, one or more first control outputs, a second control output, and a third control output;wherein: the first analog input connects to a first thermistor to measure a first temperature inside the cabinet;the second analog input connects to a second thermistor to measure a second temperature outside the cabinet;the third control output connects to the A/C system for inhibiting or re- activating the A/C system based on at least the first temperature and the second temperature,the one or more first control outputs connect to the blower subsystem for respectively operating the one or more blowers based on at least the first temperature when the A/C system is inhibited or stopped for any reason;the second control output connects to the damper subsystem for opening/closing the louver arrangement when the one or more blowers are operating/stopped. 2. The system of claim 1 wherein the one or more blowers comprise a two-channel configuration each channel having two blowers, each blower being subjected a closed-loop pulse width modulated (PWM) speed control by modulating voltage from the DC supply. 3. The system of claim 1 wherein the plurality of alarm inputs are respectively connected to a plurality of sensing devices to monitor environment conditions and operation status of the electrical equipment within the cabinet. 4. The system of claim 3 wherein the plurality of sensing devices include a smoke sensor for generating a smoke alarm input signal to the controller when alarming, the smoke alarm input signal causing the controller to respectively stop the one or more blowers through the one or more first control outputs. 5. The system of claim 3 wherein the plurality of sensing devices further include a hydrogen sensor for generating a hydrogen alarm input signal to the controller when alarming, the hydrogen alarm input signal causing the controller to respectively operate the one or more blowers at a predetermined maximum rotation speed. 6. The system of claim 3 wherein the plurality of sensing devices further include at least one AC power monitoring module for generating an AC fail alarm input signal when detecting power failure of each A/C system unit, the AC fail alarm input signal causing the controller to respectively turn on the one or more blowers at a rotation speed depending on the first temperature. 7. The system of claim 1 further comprises a filter arrangement disposed at an air inlet region of the blower subsystem and coupled to the microprocessor through a pressure switch, the filter arrangement being associated with a filter alarm input signal when a pressure drop across the filter arrangement is detected to be greater than a predetermined value by the pressure switch. 8. The system of claim 1 wherein the microprocessor further has a plurality of alarm outputs coupled with a plurality of alarm display devices. 9. The system of claim 8 wherein each of the plurality of alarm outputs includes an isolated Form C relay contacts having a common port, a normally open (NO) contact, and a normally closed (NC) contact. 10. The system of claim 9 wherein the plurality of alarm outputs include a general alarm relay normally energized to a corresponding NO contact and de-energized to a corresponding NC contact to output a general alarm output signal in an event of at least a failure of one blower or the first thermistor or the second thermistor or the DC supply. 11. The system of claim 10 wherein the plurality of alarm display devices comprise a bi-color LED display in response to the general alarm output signal. 12. The system of claim 9 wherein the plurality of alarm outputs further include a smoke alarm relay, a hydrogen alarm relay, an over-temperature alarm relay, and a filter alarm relay, each being normally energized to a corresponding NC contact and de-energized to a corresponding NO contact when alarming to output a specific alarm output signal. 13. The system of claim 12 wherein the plurality of alarm display devices further comprise a single-color LED display for each of corresponding specific alarm output signal. 14. The system of claim 1 wherein the controller further comprises an In Circuit Serial Programming port allowing programming and reprogramming of a microprocessor flash memory and production testing. 15. The system of claim 1 wherein the controller further comprises a communications port allowing the controller being connected to a personal computer via an adaptor to RS232 port or USB port. 16. The system of claim 1 wherein the controller further comprises an EMC filter between the DC power input and rest portion of the controller.
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이 특허에 인용된 특허 (9)
Han Jake Jin Kyu ; Flores Michael A., Base station heat management system.
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