CN104238596A - Adjusting system for working temperature of electronic equipment and switching power supply device - Google Patents
Adjusting system for working temperature of electronic equipment and switching power supply device Download PDFInfo
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- CN104238596A CN104238596A CN201310717974.7A CN201310717974A CN104238596A CN 104238596 A CN104238596 A CN 104238596A CN 201310717974 A CN201310717974 A CN 201310717974A CN 104238596 A CN104238596 A CN 104238596A
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Abstract
The invention discloses an adjusting system for working temperature of electronic equipment. The adjusting system comprises a shell used for containing the electronic equipment, and further comprises a temperature sensor, a control circuit and a temperature adjusting device, wherein the temperature sensor is arranged in the shell and used for detecting the temperature of internal environment of the electronic equipment; the control circuit is electrically connected with the temperature sensor and used for generating a corresponding temperature control instruction according to the temperature, obtained by the temperature sensor, of the internal environment of the electronic equipment; the temperature adjusting device is electrically connected with the control circuit and used for adjusting the temperature of the internal environment of the electronic equipment according to the temperature control instruction generated by the control circuit. The invention further discloses a switching power supply device. In this way, the working temperature of the electronic equipment is adjusted, and the electronic equipment can meet normal use requirements under different environment conditions.
Description
Technical field
The present invention relates to temperature to control and electronic technology field, especially relate to a kind of electronic device works humidity control system and switching power unit.
Background technology
Switching Power Supply utilizes modern power electronics technology, and gauge tap pipe turns on and off time ratio, maintains a kind of power supply of regulated output voltage.At present, Switching Power Supply is widely used in the numerous areas such as industrial automatic control, military industry equipment, industrial control equipment, electronics.
The operating temperature range of common Switching Power Supply is generally at-10 DEG C ~ 45 DEG C, Switching Power Supply in use, low temperature or hot environment may be met, such as, in some areas of northern China, winter temperature may be low to moderate-40 DEG C, in this low-temperature working environment, the performance of Switching Power Supply can decline, and cannot ensure the reliable voltage of stable output; Or in some particular job environment, environment temperature up to 100 DEG C, under extreme case, may can be damaged the relevant components and parts (such as, electric capacity) of Switching Power Supply, thus cause power supply short circuit, and then impact the normal work of relevant device.In addition, Switching Power Supply in the course of the work, inner components and parts can generate heat, particularly high-power switchgear power supply, while continuing to provide higher output power, thermal value is also larger, by means of only cooling or air-cooled being difficult to maintain suitable working environment naturally, cannot ensure that Switching Power Supply normally, reliably works by predetermined parameter.Therefore, current Switching Power Supply is difficult to the request for utilization meeting extreme environment, is necessary to improve to solve the problem to existing Switching Power Supply.
Foregoing, only for auxiliary understanding technical scheme of the present invention, does not represent and admits that foregoing is prior art.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of electronic device works humidity control system and switching power unit, is intended to the adjustment realizing electronic device works temperature, ensures that electronic equipment normally works under low temperature and hot environment.
For achieving the above object, the invention provides a kind of electronic device works humidity control system, comprise the shell for holding electronic equipment, in addition, this electronic device works humidity control system also comprises temperature sensor, control circuit and temperature control equipment, wherein:
Described temperature sensor, is arranged on the inside of described shell, for detected electrons device interior environment temperature;
Described control circuit, is electrically connected with described temperature sensor, generates corresponding temperature control instruction for the electronic equipment internal environment temperature obtained according to described temperature sensor;
Described temperature control equipment, is electrically connected with described control circuit, regulates electronic equipment internal environment temperature for the temperature control instruction generated according to described control circuit.
Preferably, described temperature control equipment comprises refrigerating/heating unit and heat exchange unit, and described heat exchange unit is arranged on the inside of described shell, and described refrigerating/heating unit is used for providing cold/thermal current to described heat exchange unit.
Preferably, described refrigerating/heating unit comprises compressor, vortex tube and solenoid directional control valve, described compressor is used for providing pressure gas to described vortex tube, described vortex tube for generation of described cold/thermal current, described solenoid directional control valve is for switching the current path between described vortex tube and described heat exchange unit.
Preferably, described vortex tube comprises injection orifice, cold air brings out mouth and hot gas brings out mouth, and described injection orifice is communicated with the exhausr port of described compressor, and described cold air brings out mouth and brings out mouth with described hot gas and be communicated with described heat exchange unit via described solenoid directional control valve.
Preferably, described heat exchange unit comprises heat exchanger tube, and described heat exchanger tube is communicated with described vortex tube via described solenoid directional control valve, and described heat exchanger tube is coiled on the surrounding medial surface of described shell.
Preferably, described heat exchange unit also comprises some heat exchange fins, and described heat exchange fin is provided with poling hole, and described heat exchanger tube runs through described heat exchange fin by described poling hole.
Preferably, described temperature control equipment also comprises exhaust box, and described exhaust box is separately positioned on the airflow exits mouth of described solenoid directional control valve and the air stream outlet of described heat exchanger tube.
Preferably, the exhaust box on the air stream outlet of described heat exchanger tube is communicated with the air entry of described compressor.
Preferably, this electronic device works humidity control system also comprises temperature monitoring device, and described temperature monitoring device is electrically connected with described control circuit, shows for the temperature data collected by described temperature sensor.
The present invention further provides a kind of switching power unit, comprise Switching Power Supply body, in addition, this switching power unit also comprises the electronic device works humidity control system described in above-mentioned any embodiment, and described Switching Power Supply body is placed in the shell of described electronic device works humidity control system.
A kind of electronic device works humidity control system provided by the present invention and switching power unit, by having additional the working temperature regulating system for its interior environment temperature of forced adjustment on an electronic device, in electronic equipment operational process, when the lower limit of its interior environment temperature lower than default working temperature, temperature control equipment can start rapidly and heats, and makes the components and parts of electronic equipment be in normal working temperature; When the higher limit of its interior environment temperature higher than default working temperature, temperature control equipment can start refrigeration rapidly, and the components and parts of electronic equipment are in normal working temperature.Therefore, achieve the adjustment to electronic device works temperature, make electronic equipment all can meet normal request for utilization under difficult environmental conditions.
Accompanying drawing explanation
Fig. 1 is the structural representation of electronic device works humidity control system of the present invention preferred embodiment.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
The invention provides a kind of electronic device works humidity control system, for regulating electronic equipment internal environment temperature, making electronic equipment all can meet normal request for utilization under varying environment condition (such as, low temperature environment or hot environment).See Fig. 1, in one embodiment, this electronic device works humidity control system comprises for the shell (not shown) of holding electronic equipment, temperature sensor 20, control circuit 10 and temperature control equipment 30.In the present embodiment, electronic equipment is switching power unit, and this switching power unit comprises Switching Power Supply body (i.e. electronic devices and components part), and the installing of this Switching Power Supply body in the enclosure.In actual applications, shell may be full-closed structure, and also may be the semi-closed structure being provided with ventilation air vent, its specific constructive form can be decided according to the actual requirements, and therefore not to repeat here.Switching Power Supply body is made up of multiple power electric component usually, such as, diode, IGBT(insulated gate bipolar transistor), MOSFET(metal-oxide layer semiconductcor field effect transistor), transformer etc., be understandable that, Switching Power Supply body also has multiple different composition structure, its concrete structure and principle of work are known by those skilled in the art, and therefore not to repeat here.It should be noted that, electronic equipment can also be that other need arbitrarily to carry out the electronic equipment of working temperature adjustment, and such as, industrial computer, communication facilities etc., therefore not to repeat here.
Wherein, temperature sensor 20, be arranged on the inside of the shell of switching power unit, for detector switch supply unit interior environment temperature, it is worth mentioning that, the particular location of temperature sensor 20 should be determined according to actual needs, with the temperature variation making temperature sensor 20 can reflect switching power unit inside in time, exactly, such as, temperature sensor 20 is arranged near the interior components and parts higher to operating temperature requirements of switching power unit.Control circuit 10, be electrically connected with this temperature sensor 20, switching power unit interior environment temperature for obtaining according to temperature sensor 20 generates corresponding temperature control instruction, such as, the temperature control instruction that the control circuit 10 of the present embodiment generates comprises three kinds, respectively: one, standby command; Two, refrigeration instruction; Three, instruction is heated.It should be noted that, previously described three kinds of temperature control instruction are only signal, specifically how to design, can determine the requirement of working temperature and practical service environment situation according to switching power unit, such as, the switching power unit higher to operating temperature requirements, temperature control instruction also comprises constant temperature instruction, in this mode, only allow the working temperature of switching power unit to change in more among a small circle, make the serviceability that switching power unit keeps good.Temperature control equipment 30, be electrically connected with control circuit 10, for the temperature control instruction by-pass cock supply unit interior environment temperature generated according to control circuit 10, to make switching power unit interior environment temperature maintain in suitable scope, ensure that switching power unit normally works under low temperature and hot environment.
Particularly, preset the operating temperature range of switching power unit, such as, in the present embodiment, the operating temperature range preset is 10 DEG C ~ 30 DEG C.In switching power unit operational process, when temperature sensor 20 detects that the temperature of switching power unit particular position inside is less than 10 DEG C, the temperature control instruction that control circuit 10 generates is for heating instruction, now, temperature control equipment 30 startup heats program, constantly the air of switching power unit inside is heated, in heating operations, temperature sensor 20 is detector switch supply unit interior environment temperature in real time, when switching power unit interior environment temperature reaches required working temperature (such as, 25 DEG C) time, control circuit 10 generates standby command, and send to temperature control equipment 30, to close down temperature control equipment 30, thus the saving energy, when temperature sensor 20 detects that the temperature of switching power unit particular position inside is greater than 30 DEG C, the temperature control instruction that control circuit 10 generates is refrigeration instruction, now, temperature control equipment 30 starts refrigerant sequence, constantly the air of switching power unit inside is lowered the temperature, in process of refrigerastion, temperature sensor 20 is detector switch supply unit interior environment temperature in real time, when switching power unit interior environment temperature is down to required working temperature (such as, 25 DEG C) time, control circuit 10 generates standby command, and send to temperature control equipment 30, to close down temperature control equipment 30, thus the saving energy.Therefore, in switching power unit operational process, when switching power unit interior environment temperature exceeds default operating temperature range, temperature control equipment 30 can start rapidly refrigeration or heat program, to regulate switching power unit interior environment temperature, Switching Power Supply body is made to be in normal working temperature, guarantee that switching power unit all can meet normal request for utilization under varying environment condition (low temperature or high-temperature work environment), ensure that it is normal by predetermined parameter, reliably work, greatly expand the scope of application of switching power unit.
In the present embodiment, temperature control equipment 30 comprises refrigerating/heating unit and heat exchange unit 34, heat exchange unit 34 is arranged on enclosure, for carrying out heat exchange with the air of enclosure, thus the working temperature of reduction or raise switch power supply body, guarantee that Switching Power Supply body normally, reliably works by predetermined parameter, and refrigerating/heating unit is used for providing cold/thermal current to heat exchange unit 34.It is worth mentioning that, the situation that the physical dimension for switching power unit is not restricted, temperature control equipment 30 can be integrated on switching power unit, forms an integral module, is therefore convenient to install and transport.
Particularly, refrigerating/heating unit comprises compressor 31, vortex tube 32 and solenoid directional control valve 33, and wherein, compressor 31 has exhausr port 311 and air entry 312; Vortex tube 32 comprises injection orifice 321, cold air brings out mouth 322 and hot gas brings out mouth 323; Solenoid directional control valve 33 is two four-way electromagnetic reversing valves, has two input ports (being input port 331,332 respectively) and two corresponding delivery outlets (being delivery outlet 333,334 respectively).It should be noted that, in the present embodiment, only to illustrate compressor 31, vortex tube 32 and solenoid directional control valve 33, exemplary explanation is carried out to technical solution of the present invention, in other embodiments of the invention, compressor 31, vortex tube 32 and solenoid directional control valve 33 can also be other any suitable versions, and therefore not to repeat here.It is worth mentioning that, in order to improve the stability of electronic device works humidity control system, refrigerating/heating unit also comprises the gas filtration drying device at air entry 312 place of compressor, and the proportioning valve be arranged between solenoid directional control valve 33 and heat exchange unit 34 on refrigerating/heating working medium path, wherein, gas filtration drying device can carry out filtration drying to refrigerating/heating working medium, guarantees that compressor 31 and vortex tube 32 reliablely and stablely run; Proportioning valve can regulate input heat exchange unit 34 cold/heat the uninterrupted of working medium, thus realize the accurate control to switching power unit interior environment temperature.Certainly, in other embodiments of the invention, electronic device works humidity control system also comprises other relevant applicable device and equipment, to improve the regulating effect of electronic device works temperature.
Vortex tube 32 is that a kind of pressure gas that can make produces eddy motion and is separated into the energy separation device of hot and cold two parts air-flow, wherein cold airflow can be used for freezing, thermal current can be used for heating, and gases at high pressure can obtain the cold airflow of-10 DEG C ~-50 DEG C and the thermal current of 100 DEG C ~ 130 DEG C under the energy separation effect of vortex tube 32, and therefore refrigerating/heating is effective, cost is low.In addition, vortex tube 32 does not need to adopt specific refrigeration, heat working medium, and such as, it freezes, heats working medium can be other any suitable gases such as air, carbon dioxide, therefore unrestrictedly can use refrigeration cheap and easy to get, heat working medium.
The exhausr port 311 of compressor 31 is communicated with the injection orifice 321 of vortex tube 32 by pipeline, the cold air of vortex tube 32 is brought out mouth 322 and is communicated with the input port 331 of solenoid directional control valve 33 by pipeline, hot gas is brought out mouth 323 and is communicated with the input end 332 of solenoid directional control valve 33 by pipeline, and the delivery outlet 333 of solenoid directional control valve 33 is communicated with by the air flow inlet 341 of pipeline heat exchange unit 34.It should be noted that, can be copper pipe for the pipeline be communicated with between compressor 31, vortex tube 32, solenoid directional control valve 33 and heat exchange unit 34, also can be other any suitable metal tube or flexible pipes etc., can elect according to the awp of gas.
Particularly, when switching power unit needs refrigeration, control circuit 10 controls compressor 31 and starts, to provide the pressure gas of certain pressure (such as, this gas is air) to vortex tube 32, pressure gas is under the effect of vortex tube 32, be separated into cold, hot two parts air-flow, and bring out mouth 322 and hot gas from cold air respectively and bring out mouth 323 and discharge, now temperature control instruction is refrigeration instruction, therefore cold airflow is accessed heat exchange unit 34, solenoid directional control valve 33 is under the control of control circuit 10, input port 331 conducting corresponding to delivery outlet 333, input port 332 conducting corresponding to delivery outlet 334, therefore the cold airflow that produces of vortex tube 32 is via gas channel supply heat exchange unit 34 of solenoid directional control valve 33, the thermal current that vortex tube 32 produces outwards discharges via another gas channel of solenoid directional control valve 33, the cold airflow flowing through heat exchange unit 34 carries out heat exchange by heat exchange unit 34 and the air of switching power unit inside, thus reduce switching power unit internal environment working temperature, when switching power unit needs to heat, control circuit 10 controls compressor 31 and starts, to provide the pressure gas of certain pressure to vortex tube 32, pressure gas is under the effect of vortex tube 32, be separated into cold, hot two parts air-flow, and bring out mouth 322 and hot gas from cold air respectively and bring out mouth 323 and discharge, now temperature control instruction is for heating instruction, therefore thermal current is accessed heat exchange unit 34, solenoid directional control valve 33 is under the control of control circuit 10, input port 331 conducting corresponding to delivery outlet 334, input port 332 conducting corresponding to delivery outlet 333, therefore the thermal current that produces of vortex tube 32 is via gas channel supply heat exchange unit 34 of solenoid directional control valve 33, the cold airflow that vortex tube 32 produces outwards discharges via another gas channel of solenoid directional control valve 33, the thermal current flowing through heat exchange unit 34 carries out heat exchange by heat exchange unit 34 and the air of switching power unit inside, thus improve switching power unit internal environment working temperature.It can thus be appreciated that, the present invention is for regulating a whole set of cooling/heating system structure of electronic device works temperature simple, convenient operating maintenance, obtain the with low cost of cold/hot gas source, therefore be suitable for applying in various electronic, meet the requirement that electronic equipment normally works in extreme temperature conditions.
In the present embodiment, heat exchange unit 34 comprises heat exchanger tube (not shown), and this heat exchanger tube is communicated with vortex tube 32 via solenoid directional control valve 33, in better embodiment of the present invention, heat exchanger tube is copper pipe, therefore can ensure higher heat exchange efficiency, certainly, in order to reduce costs, in other embodiments of the invention, heat exchanger tube can also be the pipeline of other any suitable materials, such as, aluminum pipe or other metal tubes etc., therefore not to repeat here.Heat exchanger tube has air flow inlet 341 and air stream outlet 342, wherein air flow inlet 341 is communicated with the delivery outlet 333 of solenoid directional control valve 33 by pipeline, air stream outlet 342 is open to be arranged, after heat exchange cold/thermal current is disposed in outside air by air stream outlet 342.Heat exchanger tube is coiled on the surrounding medial surface of shell, be understandable that, the effective heat exchange area of heat exchanger tube determines its heat exchange efficiency, and under the prerequisite that caliber is certain, the size of heat interchanging area depends on the total length of heat exchanger tube, therefore can arrange heat exchanger tube according to actual needs and be coiled in the number of turns on the surrounding medial surface of shell.It is worth mentioning that, in switching power unit, some components and parts is higher to operating temperature requirements, therefore, in order to the working temperature of effective balancing boom device, guarantee that components and parts have good serviceability, heat exchanger tube can also locally extend near the higher components and parts of operating temperature requirements.In addition, in other embodiments of the invention, the arrangement form of heat exchanger tube can also be that other are any suitable, such as, heat exchanger tube is arranged on the end face of enclosure, as long as ensure that heat exchanger tube can carry out sufficient heat exchange with the air in shell, therefore not to repeat here.
In the present embodiment, heat exchange unit 34 also comprises some heat exchange fin (not shown)s, in better embodiment of the present invention, heat exchange fin can be copper fin or aluminum fin-stock, heat exchange fin is provided with poling hole, heat exchanger tube runs through heat exchange fin by this poling hole, thus is fastened on heat exchanger tube by heat exchange fin.It is worth mentioning that, being arranged on heat exchanger tube of heat exchange fin parallel side-by-side, and the air circulation interval formed between heat exchange fin should be suitable for the flowing of air, thus improve heat exchange efficiency.In addition, in order to increase the contact area between heat exchange fin and heat exchanger tube, thus improve the heat transfer property between heat exchanger tube and heat exchange fin, the poling hole of heat exchange fin is flanging bore.Be understandable that, the heat interchanging area of heat exchange unit 34 greatly can be increased by setting up heat exchange fin on heat exchanger tube, therefore when by-pass cock supply unit interior environment temperature, heat exchange efficiency is higher, in time, effectively reduce or raise switch supply unit interior environment temperature, make switching power unit all meet normal request for utilization under low temperature and hot conditions.
In the present embodiment, temperature control equipment 30 also comprises exhaust box, and see Fig. 1, exhaust box 35 is arranged on the airflow exits mouth (i.e. delivery outlet 334) of solenoid directional control valve 33, exhaust box 36 is arranged on the air stream outlet 342 of heat exchange unit 34, on the air stream outlet 342 of namely heat exchanger tube.Therefore, the noise produced in airflow exits process can be reduced, thus unnecessary noise pollution can not be caused to surrounding enviroment.
In the present embodiment, exhaust box 36 on the air stream outlet 342 of heat exchanger tube is communicated with the air entry 312 of compressor 31 by pipeline, therefore temperature control equipment 30 is freezing to switching power unit or in heating operations, the waste gas of discharging from the air stream outlet 342 of heat exchanger tube can be back to the air entry 312 of compressor 31, low-temperature airflow or high temperature gas flow are reused, thus improve refrigeration or the heating efficiency of vortex tube 32.It is worth mentioning that, after the air stream outlet 342 of heat exchanger tube is communicated with the air entry 312 of compressor 31, exhaust box 36 can not be set on the air stream outlet 342 of heat exchanger tube, thus reduce the cost of electronic device works humidity control system.Certainly, in the place not too responsive to noise, in order to reduce the cost of electronic device works humidity control system further, exhaust box 35 and exhaust box 36 all can omit.
In addition, on the basis of above embodiment, this electronic device works humidity control system also comprises temperature monitoring device 40, and this temperature monitoring device 40 is electrically connected with control circuit 10, shows for the temperature data collected by temperature sensor 20.In better embodiment of the present invention, this temperature monitoring device 40 has a display screen (such as, black-and-white crystal display screen, LED display etc.), and is arranged on equipment operating panel place.Switching power unit is in operational process, temperature sensor 20 detects its interior environment temperature in real time, and shown by the display screen of temperature monitoring device 40, the working temperature of switching power unit is reflected in time to Operation and Maintenance personnel, thus avoid the situation causing switching power unit normally to work because temperature control equipment 30 lost efficacy to occur, improve equipment reliability of operation.
Should be understood that; these are only the preferred embodiments of the present invention; can not therefore limit the scope of the claims of the present invention; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. an electronic device works humidity control system, comprises the shell for holding electronic equipment, it is characterized in that, this electronic device works humidity control system also comprises temperature sensor, control circuit and temperature control equipment, wherein:
Described temperature sensor, is arranged on the inside of described shell, for detected electrons device interior environment temperature;
Described control circuit, is electrically connected with described temperature sensor, generates corresponding temperature control instruction for the electronic equipment internal environment temperature obtained according to described temperature sensor;
Described temperature control equipment, is electrically connected with described control circuit, regulates electronic equipment internal environment temperature for the temperature control instruction generated according to described control circuit.
2. electronic device works humidity control system as claimed in claim 1, it is characterized in that, described temperature control equipment comprises refrigerating/heating unit and heat exchange unit, described heat exchange unit is arranged on the inside of described shell, and described refrigerating/heating unit is used for providing cold/thermal current to described heat exchange unit.
3. electronic device works humidity control system as claimed in claim 2, it is characterized in that, described refrigerating/heating unit comprises compressor, vortex tube and solenoid directional control valve, described compressor is used for providing pressure gas to described vortex tube, described vortex tube for generation of described cold/thermal current, described solenoid directional control valve is for switching the current path between described vortex tube and described heat exchange unit.
4. electronic device works humidity control system as claimed in claim 3, it is characterized in that, described vortex tube comprises injection orifice, cold air brings out mouth and hot gas brings out mouth, described injection orifice is communicated with the exhausr port of described compressor, and described cold air brings out mouth and brings out mouth with described hot gas and be communicated with described heat exchange unit via described solenoid directional control valve.
5. electronic device works humidity control system as claimed in claim 3, it is characterized in that, described heat exchange unit comprises heat exchanger tube, and described heat exchanger tube is communicated with described vortex tube via described solenoid directional control valve, and described heat exchanger tube is coiled on the surrounding medial surface of described shell.
6. electronic device works humidity control system as claimed in claim 5, it is characterized in that, described heat exchange unit also comprises some heat exchange fins, and described heat exchange fin is provided with poling hole, and described heat exchanger tube runs through described heat exchange fin by described poling hole.
7. electronic device works humidity control system as claimed in claim 5, it is characterized in that, described temperature control equipment also comprises exhaust box, and described exhaust box is separately positioned on the airflow exits mouth of described solenoid directional control valve and the air stream outlet of described heat exchanger tube.
8. electronic device works humidity control system as claimed in claim 7, it is characterized in that, the exhaust box on the air stream outlet of described heat exchanger tube is communicated with the air entry of described compressor.
9. electronic device works humidity control system as claimed in any one of claims 1-9 wherein, it is characterized in that, this electronic device works humidity control system also comprises temperature monitoring device, described temperature monitoring device is electrically connected with described control circuit, shows for the temperature data collected by described temperature sensor.
10. a switching power unit, comprise Switching Power Supply body, it is characterized in that, this switching power unit also comprises the electronic device works humidity control system according to any one of claim 1 to 9, and described Switching Power Supply body is placed in the shell of described electronic device works humidity control system.
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| CN201310717974.7A CN104238596A (en) | 2013-12-23 | 2013-12-23 | Adjusting system for working temperature of electronic equipment and switching power supply device |
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| CN201310717974.7A CN104238596A (en) | 2013-12-23 | 2013-12-23 | Adjusting system for working temperature of electronic equipment and switching power supply device |
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| CN111580578A (en) * | 2020-05-22 | 2020-08-25 | 珠海格力智能装备有限公司 | Temperature monitoring equipment and system |
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| CN111580578A (en) * | 2020-05-22 | 2020-08-25 | 珠海格力智能装备有限公司 | Temperature monitoring equipment and system |
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