Database case heat dissipation device

Abstract

According to the heat dissipation device for the database case, a heat exchange control signal output by the controller, a detected current signal of the database host and a case temperature detected by the thermistor are prejudged by the three-parameter fusion analysis circuit, and specifically, a case temperature signal is superposed with a calculated power consumption signal of the database host; when the difference value is small, an integrator accumulates difference value signals, when the accumulated signals are large, the accumulated signals enter a controller to achieve variable-power driving adjustment of the circulation heat exchange capacity, when the difference value is large, power consumption signals are filtered, and whether the power consumption signals are too high or not is judged through a triode Q3 in one path; when the temperature is too high, a heat exchange control signal is adjusted to the maximum, whether a power consumption signal is continuously high or not is judged by an operational amplifier AR3 in the other path, and when the power consumption signal is high, a difference value is fed back to a database host through a voltage-regulator tube Z1 to reduce load and power consumption, so that the interior of the case is cooled, the temperature can be kept at a proper constant temperature, and the power consumption is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of database chassis, in particular to a database chassis heat dissipation device. Background Art

[0002] Databases generally have basic functions such as storage, retrieval, security, and backup. They store data together in a certain way, allowing multiple users to share and minimize redundancy. The carriers of the database usually include chassis and host (power supply, motherboard, hard disk, etc.). During use, the inside of the chassis needs to be cooled to improve the stability and service life of the database. The existing technology uses a cooling cavity in the chassis. The controller controls the heat exchanger to circulate heat exchange on the refrigerant in the cooling cavity according to the chassis temperature detected by the thermistor when the temperature exceeds the set threshold, so as to cool down. As we all know, temperature is closely related to the workload and circulatory heat exchange capacity of the heat database host. Its control principle is simple, and it cannot adjust the circulatory heat exchange capacity of the heat exchanger in real time according to the heat generation situation, and the power consumption is high. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a database chassis heat dissipation device, which effectively solves the problems in the prior art.

[0004] The technical solution includes a chassis, a controller, and a heat exchanger. The chassis is provided with a cooling chamber. The controller controls the heat exchanger to perform circulating heat exchange on the refrigerant in the cooling chamber according to the chassis temperature detected by the thermistor, so as to reduce the temperature. The heat exchange control signal output by the controller, the detected database host current signal, and the chassis temperature detected by the thermistor are pre-judged by a three-parameter fusion analysis circuit, and the output signal is sent to the controller and the database host to adjust the circulating heat exchange capacity and the load of the database host.

[0005] Preferably, the three-parameter fusion analysis circuit includes a diode D1, the positive electrode of the diode D1 is connected to the chassis temperature signal detected by the thermistor, the negative electrode of the diode D1 is respectively connected to the collector of the transistor Q1 and one end of the inductor L1, the other end of the inductor L1 is respectively connected to one end of the grounding resistor R1, one end of the grounding capacitor C1, one end of the resistor R2, one end of the resistor R3, and one end of the resistor R4, the other end of the resistor R2 is connected to the power supply +5V, the other end of the resistor R3 is connected to pin 1 of the photocoupler U1, the other end of the resistor R4 is respectively connected to one end of the capacitor C2, the reference electrode of the adjustable voltage source U2, and one end of the grounding resistor R5, the other end of the capacitor C2 is connected to one end of the resistor R6, The other end of the resistor R6 is respectively connected to the pin 2 of the photocoupler U2 and the cathode of the adjustable voltage source U2, the anode of the adjustable voltage source U2 is connected to the ground, the pin 4 of the photocoupler U1 is respectively connected to the base of the transistor Q1 and one end of the inductor L2, the pin 3 of the photocoupler U1 is connected to the ground, the emitter of the transistor Q1 is connected to one end of the capacitor C3, the other end of the capacitor C3 is connected to one end of the grounding resistor R7, the other end of the inductor L2 is respectively connected to one end of the resistor R8 and the non-inverting input end of the operational amplifier AR1, the other end of the resistor R8 is connected to the hot exchange control signal, the inverting input end of the operational amplifier AR1 and the anode of the thyristor VT2 are connected to the power consumption signal, and the output end of the operational amplifier AR1 is connected to the power supply signal. The lower end of the bidirectional diode SD1 and the collector of the transistor Q2 are connected respectively, the upper end of the bidirectional diode SD1 is connected to the control electrode of the thyristor VT1, the anode of the thyristor VT1 is connected to the power supply +5V, the cathode of the thyristor VT1 is connected to one end of the grounding resistor R9 and the base of the transistor Q2, the emitter of the transistor Q2 is connected to one end of the resistor R10 and the upper end of the bidirectional diode SD2, the lower end of the bidirectional diode SD2 is connected to the control electrode of the thyristor VT2, the other end of the resistor R10 is connected to the inverting input terminal of the operational amplifier AR2, one end of the resistor R11, and one end of the capacitor C4, the non-inverting input terminal of the operational amplifier AR2 is connected to the ground, and the output terminal of the operational amplifier AR2 is connected to the ground. The other end of the resistor R11, the other end of the capacitor C4, and the left end of the bidirectional diode SD3 are respectively connected, the right end of the bidirectional diode SD3 is connected to the controller, the cathode of the thyristor VT2 is connected to one end of the resistor R12, the other end of the resistor R12 is respectively connected to one end of the resistor R13 and one end of the grounding capacitor C5, the other end of the resistor R13 is respectively connected to the base of the transistor Q3 and the non-inverting input end of the operational amplifier AR3, the collector of the transistor Q3 is connected to the power supply +5V, the emitter of the transistor Q3 is connected to the controller and the inverting input end of the operational amplifier AR3, the output end of the operational amplifier AR3 is connected to the negative pole of the voltage regulator Z1, and the positive output signal of the voltage regulator Z1 is fed back to the database host.

[0006] The utility model receives a chassis temperature signal detected by a thermistor and superimposes it with a power consumption signal of a database host, and then subtracts it from a heat exchange control signal to calculate a difference. When the difference is small, the difference signal is accumulated by an integrator. When the accumulated signal is large, it enters a controller to adjust the size of the heat exchange control signal to achieve variable power drive regulation cycle heat exchange capability. When the difference is large, the power consumption signal is filtered, enters the operational amplifier AR3 one way, and is added to the base of the transistor Q3 one way. When the power consumption signal is high, the transistor Q3 is turned on, +5V enters the controller and the inverting input end of the operational amplifier AR3, and the heat exchange control signal is adjusted to the maximum to achieve full power drive regulation cycle heat exchange capability. When the power consumption signal is continuously high, the difference of the operational amplifier AR3 is fed back to the database host through the voltage regulator Z1 to reduce the load and power consumption, thereby dissipating heat inside the chassis, so that the temperature inside the chassis is maintained at an appropriate temperature. The heat exchanger is controlled to work according to whether the temperature exceeds a set threshold, thereby avoiding frequent start and stop work control, and can maintain an appropriate constant temperature and reduce power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is the circuit schematic diagram of the utility model.

[0008] Figure 2 This is a circuit block diagram of the utility model. DETAILED DESCRIPTION

[0009] For the above and other technical contents, features and functions of the present invention, please refer to the following attached Figures 1 to 2 The detailed description of the embodiments will clearly show that the structural contents mentioned in the following embodiments are all based on the drawings in the specification.

[0010] Various exemplary embodiments of the present utility model will be described below with reference to the accompanying drawings.

[0011] The heat dissipation device of a database chassis comprises a chassis, a controller and a heat exchanger. The chassis is provided with a cooling chamber. The controller controls the heat exchanger to circulate heat exchange of the refrigerant in the cooling chamber according to the chassis temperature detected by the thermistor, so as to cool down the temperature. The heat exchange control signal output by the controller, the detected database host current signal and the chassis temperature detected by the thermistor are pre-judged by a three-parameter fusion analysis circuit. Specifically, the chassis temperature signal detected by the thermistor is received, rectified, filtered and photoelectrically converted, and connected to the power consumption signal of the database host at the same phase input end of an operational amplifier AR1 for superposition. The inverting input end of the operational amplifier AR1 is connected to the heat exchange control signal output by the controller. The operational amplifier AR1 outputs the difference between the heat exchange control signal and the superimposed signal. When the difference is small, the transistor Q2 is turned on, the difference signal enters the integrator, and the difference signal is accumulated. When the accumulated signal is large, the bidirectional diode SD3 is turned on and enters the controller to adjust the size of the heat exchange control signal. According to the detected temperature, heat generation, and existing cycle heat exchange refrigeration conditions, the variable power drive and adjustment cycle heat exchange capacity is realized. When the difference is large, the bidirectional diode SD1 is turned on, the thyristor VT1 is turned on, the bidirectional diode SD2, and then the thyristor VT2 is turned on. The power consumption signal is filtered, enters the operational amplifier AR3 one way, and is added to the base of the transistor Q3 one way. When the power consumption signal is high, the transistor Q3 is turned on, +5V enters the controller and the inverting input terminal of the operational amplifier AR3, and the heat exchange control signal is adjusted to the maximum to realize the full power drive and adjustment cycle heat exchange capacity. When the power consumption signal is continuously high, the difference of the operational amplifier AR3 is fed back to the database host through the voltage regulator Z1 to reduce the load. Based on this, the pre-analysis and judgment are carried out to dissipate the heat inside the chassis according to the situation, so that the temperature inside the chassis is close to the constant temperature and maintained at an appropriate temperature. The heat exchanger is controlled to work according to whether the temperature exceeds the set threshold, which avoids frequent start and stop control, can maintain an appropriate constant temperature, and reduce power consumption.

[0012] On the basis of the above technical scheme, the three-parameter fusion analysis circuit receives the chassis temperature signal detected by the thermistor, and undergoes rectification, filtering, and photoelectric conversion, wherein a TL431 overvoltage detection chassis temperature signal value is set to determine whether the signal is abnormal. After photoelectric conversion, the signal is verified by the voltage regulator tube Z2 and the transistor Q1 to determine whether the chassis temperature signal value is abnormal. When abnormal, it is discharged through the capacitor C3 and the resistor R7. When normal, it is filtered by the resistor current limiting and the inductor L2 to enter the in-phase input terminal of the operational amplifier AR1, and is superimposed with the power consumption signal of the database host connected to the in-phase input terminal of the operational amplifier AR1. The power consumption signal is obtained by multiplying the detected database host power supply current signal by the power supply voltage, and the actual power signal can be obtained by multiplying by a multiplier, and the actual power signal is obtained by a subtractor. The power consumption signal is obtained by subtracting the rated power signal from the rate signal. The inverting input terminal of the operational amplifier AR1 is connected to the heat exchange control signal output by the controller (the corresponding cooling temperature signal). The operational amplifier AR1 outputs the difference between the heat exchange control signal and the superimposed signal. When the difference is small, the transistor Q2 is turned on, and the difference signal enters the integrator composed of the operational amplifier AR2, the parallel resistor R11 and the capacitor C4, and the input resistor R10 to accumulate the difference signal. When the accumulated signal is large, the bidirectional diode SD3 is turned on and enters the controller to adjust the size of the heat exchange control signal. For example, the speed of the refrigerant flow can be adjusted by adjusting the speed of the centrifugal pump, so as to achieve variable power according to the detected temperature, heat generation, and existing cycle heat exchange refrigeration conditions. The drive regulates the heat exchange capability of the cycle. When the difference is large, the bidirectional diode SD1 is turned on, the thyristor VT1 is turned on, the bidirectional diode SD2, and then the thyristor VT2 is turned on. The power consumption signal is filtered by the resistor R12 and the capacitor C5, and enters the operational amplifier AR3 one way and is added to the base of the transistor Q3 one way. When the power consumption signal is high, the transistor Q3 is turned on, and +5V enters the controller and the inverting input terminal of the operational amplifier AR3. The heat exchange control signal is adjusted to the maximum to achieve full-power drive regulation cycle heat exchange capability. When the power consumption signal is continuously high, the difference of the operational amplifier AR3 is fed back to the database host through the voltage regulator Z1. It can be connected to the RS232 serial port of the database host through the AD converter and the level converter connected in sequence. It can also be connected to a controller, which is connected to a database host through a serial port to reduce load (such as caching, compression, deduplication, etc.) and power consumption, so as to dissipate heat inside the chassis, so that the temperature inside the chassis is maintained at a suitable temperature, and the heat exchanger is controlled to work according to whether the temperature exceeds a set threshold, thereby avoiding frequent start and stop work control, being able to maintain a suitable constant temperature and reducing power consumption, including a diode D1, the positive electrode of the diode D1 is connected to the chassis temperature signal detected by the thermistor, the negative electrode of the diode D1 is respectively connected to the collector of the transistor Q1 and one end of the inductor L1, and the other end of the inductor L1 is respectively connected to one end of the grounding resistor R1, one end of the grounding capacitor C1, one end of the resistor R2, one end of the resistor R3, and one end of the resistor R4.The other end of resistor R2 is connected to the power supply +5V, the other end of resistor R3 is connected to pin 1 of photocoupler U1, the other end of resistor R4 is respectively connected to one end of capacitor C2, the reference electrode of adjustable voltage source U2, and one end of ground resistor R5, the other end of capacitor C2 is connected to one end of resistor R6, the other end of resistor R6 is respectively connected to pin 2 of photocoupler U2 and the cathode of adjustable voltage source U2, the anode of adjustable voltage source U2 is connected to ground, pin 4 of photocoupler U1 is respectively connected to the negative electrode of voltage regulator tube Z2 and one end of resistor R14, the positive electrode of voltage regulator tube Z2 is connected to the base and collector of transistor Q1, the positive electrode of resistor R14 is connected to the base and collector of transistor Q1, the positive electrode of resistor R14 is connected to the base and collector of transistor Q2, the positive electrode of resistor R14 is connected to the base and collector of transistor Q1 ... The other end is connected to one end of the inductor L2, the pin 3 of the photocoupler U1 is connected to the ground, the emitter of the transistor Q1 is connected to one end of the capacitor C3, the other end of the capacitor C3 is connected to one end of the grounding resistor R7, the other end of the inductor L2 is respectively connected to one end of the resistor R8 and the non-inverting input end of the operational amplifier AR1, the other end of the resistor R8 is connected to the power consumption signal, the inverting input end of the operational amplifier AR1 and the anode of the thyristor VT2 are connected to the hot exchange control signal, the output end of the operational amplifier AR1 is respectively connected to the lower end of the bidirectional diode SD1 and the collector of the transistor Q2, the upper end of the bidirectional diode SD1 is connected to the The control electrode, the anode of the thyristor VT1 is connected to the power supply +5V, the cathode of the thyristor VT1 is respectively connected to one end of the grounding resistor R9 and the base of the transistor Q2, the emitter of the transistor Q2 is respectively connected to one end of the resistor R10 and the upper end of the bidirectional diode SD2, the lower end of the bidirectional diode SD2 is connected to the control electrode of the thyristor VT2, the other end of the resistor R10 is respectively connected to the inverting input terminal of the operational amplifier AR2, one end of the resistor R11, and one end of the capacitor C4, the non-inverting input terminal of the operational amplifier AR2 is connected to the ground, and the output terminal of the operational amplifier AR2 is respectively connected to the other end of the resistor R11, the other end of the capacitor C4, The left end of the bidirectional diode SD3 and the right end of the bidirectional diode SD3 are connected to the controller, the cathode of the thyristor VT2 is connected to one end of the resistor R12, the other end of the resistor R12 is respectively connected to one end of the resistor R13 and one end of the grounding capacitor C5, the other end of the resistor R13 is respectively connected to the base of the transistor Q3 and the non-inverting input of the operational amplifier AR3, the collector of the transistor Q3 is connected to the power supply +5V, the emitter of the transistor Q3 is connected to the controller and the inverting input of the operational amplifier AR3, the output end of the operational amplifier AR3 is connected to the negative pole of the voltage regulator Z1, and the positive output signal of the voltage regulator Z1 is fed back to the database host.

[0013] The above is a further detailed description of the present invention in combination with a specific implementation method, and it cannot be determined that the specific implementation of the present invention is limited to this; for technical personnel in the field of the present invention and related technical fields, based on the technical solution of the present invention, the expansion and replacement of operating methods and data should all fall within the protection scope of the present invention.

Claims

1. A database chassis heat dissipation device, comprising a chassis, a controller, and a heat exchanger, wherein the chassis is provided with a cooling chamber, and the controller controls the heat exchanger to circulate heat exchange of the refrigerant in the cooling chamber according to the chassis temperature detected by the thermistor, thereby cooling the temperature, wherein the device is characterized in that: The heat exchange control signal output by the controller, the detected database host current signal, and the chassis temperature detected by the thermistor are pre-judged by the three-parameter fusion analysis circuit, and the output signal is sent to the controller and database host to adjust the circulation heat exchange capacity and the load of the database host.

2. The database chassis heat dissipation device according to claim 1, characterized in that: The three-parameter fusion analysis circuit includes a diode D1, the positive electrode of the diode D1 is connected to the chassis temperature signal detected by the thermistor, the negative electrode of the diode D1 is respectively connected to the collector of the transistor Q1 and one end of the inductor L1, the other end of the inductor L1 is respectively connected to one end of the grounding resistor R1, one end of the grounding capacitor C1, one end of the resistor R2, one end of the resistor R3, and one end of the resistor R4, the other end of the resistor R2 is connected to the power supply +5V, the other end of the resistor R3 is connected to the pin 1 of the photoelectric coupler U1, the other end of the resistor R4 is respectively connected to one end of the capacitor C2, the reference electrode of the adjustable voltage source U2, and one end of the grounding resistor R5, the other end of the capacitor C2 is connected to one end of the resistor R6, and the other end of the resistor R6 is respectively connected to the photoelectric coupler U1. Pin 2 of the coupler U2 and the cathode of the adjustable voltage regulator U2, the anode of the adjustable voltage regulator U2 are connected to the ground, the pin 4 of the photocoupler U1 is respectively connected to the negative electrode of the voltage regulator Z2 and one end of the resistor R14, the positive electrode of the voltage regulator Z2 is connected to the base and collector of the transistor Q1, the other end of the resistor R14 is connected to one end of the inductor L2, the pin 3 of the photocoupler U1 is connected to the ground, the emitter of the transistor Q1 is connected to one end of the capacitor C3, the other end of the capacitor C3 is connected to one end of the grounding resistor R7, the other end of the inductor L2 is respectively connected to one end of the resistor R8 and the non-inverting input end of the operational amplifier AR1, the other end of the resistor R8 is connected to the power consumption signal, the inverting input end of the operational amplifier AR1 and the anode of the thyristor VT2 are connected to the thermal The control signal is exchanged, the output end of the operational amplifier AR1 is respectively connected to the lower end of the bidirectional diode SD1 and the collector of the transistor Q2, the upper end of the bidirectional diode SD1 is connected to the control electrode of the thyristor VT1, the anode of the thyristor VT1 is connected to the power supply +5V, the cathode of the thyristor VT1 is respectively connected to one end of the grounding resistor R9 and the base of the transistor Q2, the emitter of the transistor Q2 is respectively connected to one end of the resistor R10 and the upper end of the bidirectional diode SD2, the lower end of the bidirectional diode SD2 is connected to the control electrode of the thyristor VT2, the other end of the resistor R10 is respectively connected to the inverting input end of the operational amplifier AR2, one end of the resistor R11, and one end of the capacitor C4, the non-inverting input end of the operational amplifier AR2 is connected to the ground, and the operational The output end of the amplifier AR2 is respectively connected to the other end of the resistor R11, the other end of the capacitor C4, and the left end of the bidirectional diode SD3, the right end of the bidirectional diode SD3 is connected to the controller, the cathode of the thyristor VT2 is connected to one end of the resistor R12, the other end of the resistor R12 is respectively connected to one end of the resistor R13 and one end of the grounding capacitor C5, the other end of the resistor R13 is respectively connected to the base of the transistor Q3 and the non-inverting input end of the operational amplifier AR3, the collector of the transistor Q3 is connected to the power supply +5V, the emitter of the transistor Q3 is connected to the controller and the inverting input end of the operational amplifier AR3, the output end of the operational amplifier AR3 is connected to the negative pole of the voltage regulator Z1, and the positive output signal of the voltage regulator Z1 is fed back to the database host.

3. The database chassis heat dissipation device according to claim 2, characterized in that: The power consumption signal is obtained by multiplying the detected database host power supply current signal by the power supply voltage to obtain an actual power signal, which is then obtained by subtracting the rated power signal from the actual power signal.

4. The database chassis heat dissipation device according to claim 2, characterized in that: The positive output signal of the voltage regulator tube Z1 is fed back to the database host, and an AD converter and a level converter are connected in sequence, and the level converter is connected to the RS232 serial port of the database host.

5. The database chassis heat dissipation device according to claim 2, characterized in that: The positive output signal of the voltage regulator tube Z1 is fed back to the database host and connected to the controller, and the controller is connected to the database host through the serial port.

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