CN213574763U - Energy-saving control device with double cooling fans of cabinet - Google Patents
Energy-saving control device with double cooling fans of cabinet Download PDFInfo
- Publication number
- CN213574763U CN213574763U CN202022584639.2U CN202022584639U CN213574763U CN 213574763 U CN213574763 U CN 213574763U CN 202022584639 U CN202022584639 U CN 202022584639U CN 213574763 U CN213574763 U CN 213574763U
- Authority
- CN
- China
- Prior art keywords
- resistor
- energy
- rectifier bridge
- thermistor
- series
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Cooling Or The Like Of Electrical Apparatus (AREA)
Abstract
The utility model discloses a two radiator fan energy-saving control devices of rack, include: the device comprises a power switch, a rectifier bridge, a one-way thyristor, a thermistor, a charging capacitor, first to fourth resistors, a second cooling fan and a temperature control switch; the input end of the rectifier bridge is connected with the first cooling fan in series and then is connected with an alternating current 220V power supply through a power switch; the first resistor and the second resistor are connected in series and then connected with the positive and negative output ends of the rectifier bridge; the charging capacitor is connected in parallel at two ends of the second resistor; the thermistor is connected with the fourth resistor and the third resistor in series and then connected to two ends of the charging capacitor in parallel; the anode of the unidirectional silicon controlled rectifier is connected with the anode of the rectifier bridge, the cathode of the unidirectional silicon controlled rectifier is connected with the cathode of the rectifier bridge, and the control electrode of the unidirectional silicon controlled rectifier is connected between the fourth resistor and the thermistor; the temperature control switch is connected with the second cooling fan in series and then is connected with an alternating current 220V power supply through the power switch. The utility model provides a two radiator fan energy-saving control devices of rack has realized that the fan opens automatically at random cabinet temperature variation and stops and the speed governing, and is more energy-conserving.
Description
Technical Field
The utility model relates to an electrical engineering technical field, more specifically the two radiator fan energy-saving control devices of rack that says so relates to.
Background
With the wide popularization and application of the high-power frequency converter in the fields of industry, agriculture and the like, particularly in the fields of 24-hour operation such as oil extraction in oil fields, outdoor skid-type water injection pump rooms, variable-frequency oil transmission and the like, a large number of electrical cabinets exist in the field and are used for protecting electrical control equipment such as the frequency converter and the like from erosion of wind sand, rain, snow and the like. Because these electrical control equipment power capacity is big, the self of the during operation is great that generates heat, generally need to adopt two fans heat dissipation, but these two fans as long as the switch board circular telegram, no matter spring summer autumn and winter, all keep full speed operation night and day, and arrange the manual work in the reality to go the switch then neither in time, neither is realistic, consequently, causes a large amount of electric energy wastes, also influences the life-span of fan, increases the fortune dimension expense.
Therefore, how to provide a control device of a heat dissipation fan with more energy saving is a problem that needs to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a two radiator fan energy-saving control device of rack has realized that radiator fan just starts when the rack temperature risees and need the heat dissipation, reaches energy saving and consumption reduction, automatic radiating purpose.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a two radiator fan energy-saving control device of rack, includes: the circuit comprises a power switch, a rectifier bridge, a one-way thyristor, a thermistor, a charging capacitor C1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a second cooling fan and a temperature control switch;
the input end of the rectifier bridge is connected with the first cooling fan in series and then is connected with an alternating current 220V power supply through a power switch;
the first resistor R1 and the second resistor R2 are connected in series and then are connected with the positive and negative output ends of the rectifier bridge;
the charging capacitor C1 is connected in parallel across the second resistor R2;
the thermistor is connected in series with the fourth resistor R4 and the third resistor R3 and then connected in parallel to two ends of the charging capacitor C1;
the anode of the unidirectional silicon controlled rectifier is connected with the anode of the rectifier bridge, the cathode of the unidirectional silicon controlled rectifier is connected with the cathode of the rectifier bridge, and the control electrode of the unidirectional silicon controlled rectifier is connected between the fourth resistor R4 and the thermistor;
the temperature control switch is connected with the second cooling fan in series and then is connected with an alternating current 220V power supply through a power switch.
Preferably, the thermistor is an NTC thermistor.
Preferably, the temperature control switch is a movable temperature control switch.
Preferably, the fourth resistor R4 is a potentiometer.
According to the above technical scheme, compare with prior art, the utility model discloses a two radiator fan energy-saving control device of rack, when the rack temperature is low, first and second radiator fan auto-stop, when the temperature reaches needs the heat dissipation temperature, first radiator fan starts the heat dissipation and accelerates the rotational speed heat dissipation along with the temperature risees. When the heat dissipation capacity of the first heat dissipation fan is insufficient, the second heat dissipation fan starts to dissipate heat; on the contrary, along with the reduction of the temperature of the cabinet, the second cooling fan and the first cooling fan are sequentially closed, decelerated and stopped to cool.
The utility model provides a two radiator fan energy-saving control devices of rack, the heat dissipation overall process does not need artificial intervention, has realized the automatic heat dissipation control in all seasons, has realized automatically that radiator fan is out of work when the low temperature, single fan speed governing work during the normal atmospheric temperature, and double fan simultaneous working during the high temperature not only is applicable to the double fan occasion, but also is fit for single fan occasion, both the energy can be saved, extension fan life again has also reduced the maintenance cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the energy-saving control device with two cooling fans for a cabinet provided by the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to the attached drawing 1, the embodiment of the utility model discloses two radiator fan energy-saving control devices of rack is disclosed, include: the circuit comprises a power switch, a rectifier bridge, a one-way thyristor, a thermistor, a charging capacitor C1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a second cooling fan and a temperature control switch;
the input end of the rectifier bridge is connected with the first cooling fan in series and then is connected with an alternating current 220V power supply through a power switch SW;
the first resistor R1 and the second resistor R2 are connected in series and then are connected with the positive electrode and the negative electrode of the rectifier bridge;
the charging capacitor C1 is connected in parallel across the second resistor R2;
the thermistor is connected in series with the fourth resistor R4 and the third resistor R3 and then connected in parallel with two ends of the charging capacitor C1;
the anode of the unidirectional silicon controlled rectifier is connected with the anode of the rectifier bridge, the cathode of the unidirectional silicon controlled rectifier is connected with the cathode of the rectifier bridge, and the control electrode of the unidirectional silicon controlled rectifier is connected between the fourth resistor R4 and the thermistor; among them, the thermistor is preferably an NTC thermistor.
The temperature control switch is connected with the second cooling fan in series and then is connected with an alternating current 220V power supply through the power switch, and the branch of the temperature control switch connected with the second cooling fan in series is connected with two ends of the branch of the rectifier bridge connected with the first cooling fan in series in parallel. The temperature control switch ST directly controls the start and stop of the fan. For example, a 40 ℃ dynamic-closing temperature control switch is selected, and when the temperature in the case reaches the dynamic temperature, the temperature control switch is closed, so that the full-speed auxiliary heat dissipation of the fan is assisted.
The utility model provides a technical scheme's theory of operation is: the 220V alternating current is rectified into pulsating direct current through a rectifier bridge B, the pulsating direct current charges a charging capacitor C1 through a first resistor R1 after the voltage crosses zero, and the voltage limit value which can be charged in one pulse period is influenced by the charging time constant of the first resistor R1 and the charging capacitor C1 and is limited by the voltage division of a second resistor R2 and a first resistor R1; the voltage on the charging capacitor C1 is divided again by the NTC thermistor RT1, the third resistor R3 and the fourth resistor R4 and then is added to the control level of the one-way silicon controlled rectifier SCR, and the control level voltage added to the one-way silicon controlled rectifier SCR is ensured to be lower than the conduction voltage of the SCR when the temperature of the cabinet is not high (for example, lower than 20 ℃) by the parameter selection of the first resistor R1, the second resistor R2, the charging capacitor C1, the NTC thermistor RT1, the third resistor R3 and other components and the fine adjustment of the fourth resistor R4, even if the voltage added to the control level end of the SCR is lower than the conduction voltage when the pulse voltage is at the peak value, the one-way silicon controlled rectifier is not conducted, and the main fan (first; when the temperature of the cabinet rises (for example, above 30 ℃), the resistance value of the NTC thermistor decreases, and the voltage division ratio between the third resistor R3 and the fourth resistor R4 increases, so that at a certain time when the voltage of the charging capacitor C1 rises, the voltage division ratio of the third resistor R3 exceeds the conduction voltage of the unidirectional silicon controlled rectifier SCR, the unidirectional silicon controlled rectifier SCR is turned on, and the main fan (the first cooling fan) starts to operate at a low speed. If the temperature continues to rise, the resistance value of the NTC thermistor is smaller, the one-way silicon controlled rectifier SCR is conducted in advance, the conduction angle is increased, and the rotating speed of the main fan is increased.
The two cooling fans do not work at low temperature, when the temperature of the cooling fan is required to be heated, the first cooling fan is automatically started, and when the capacity of the first cooling fan is insufficient, the second cooling fan is started to achieve auxiliary cooling. The technical scheme provided by the utility model not only be applicable to the double fan occasion, also be fit for single fan occasion moreover, both the energy can be saved, extension fan life has also reduced the maintenance cost again.
Preferably, the energy-saving control device for the double cooling fans of the cabinet is made of metal or a part of metal shell, and the temperature control switch ST can be installed in close contact with the metal part. The NTC thermistor is led out through an insulated lead wire and is properly fixed at a place capable of reflecting the actual temperature of the cabinet, such as above a heat dissipation air port of the frequency conversion cabinet.
The components are preferably, but not limited to: the rectifier bridge B selects KBP 206; selecting BT169 by using a one-way thyristor; r1 is 300K/0.5W; r2 is 10K/0.25W; r3 is 510 omega/0.25W; r4 selects a 1K omega precision potentiometer; thermistor R selection25Negative temperature system of 10K, such as: MF52B103F 4100A; the capacitor C1 is 223V or 50V; selecting KSD301 from ST to be normally open at 40 ℃; the power switch can be selected from common 220V/10A power switch.
It should be noted that this embodiment is only one of the preferred embodiments, and the purpose is to explain the technical scheme of the present invention in detail by this, obviously, adopt the technical scheme of the present invention, different supply voltages have a little influence on the starting temperature of the main fan, and those skilled in the art can carry out appropriate adjustment on the parameters of the components according to the different temperature requirements of the cabinet. The utility model provides a potentiometre among the technical scheme is unnecessary, mainly is in order to be fit for the different start-up radiating temperature needs of different users, can adjust R4 completely under certain suitable temperature in reality, merges into a fixed resistance with R3, R4 at last.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (4)
1. The utility model provides a two radiator fan energy-saving control device of rack which characterized in that includes: the circuit comprises a power switch, a rectifier bridge, a one-way thyristor, a thermistor, a charging capacitor C1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a second cooling fan and a temperature control switch;
the input end of the rectifier bridge is connected with the first cooling fan in series and then is connected with an alternating current 220V power supply through a power switch;
the first resistor R1 and the second resistor R2 are connected in series and then are connected with the positive and negative output ends of the rectifier bridge;
the charging capacitor C1 is connected in parallel across the second resistor R2;
the thermistor is connected in series with the fourth resistor R4 and the third resistor R3 and then connected in parallel to two ends of the charging capacitor C1;
the anode of the unidirectional silicon controlled rectifier is connected with the anode of the rectifier bridge, the cathode of the unidirectional silicon controlled rectifier is connected with the cathode of the rectifier bridge, and the control electrode of the unidirectional silicon controlled rectifier is connected between the fourth resistor R4 and the thermistor;
the temperature control switch is connected with the second cooling fan in series and then is connected with an alternating current 220V power supply through a power switch.
2. The energy-saving control device for the double cooling fans of the cabinet as claimed in claim 1, wherein the thermistor comprises: an NTC thermistor.
3. The energy-saving control device for dual heat dissipation fans of a cabinet as claimed in claim 2, wherein the temperature-controlled switch comprises: and (4) a temperature control switch is turned on and off.
4. The energy-saving control device for the double cooling fans of the cabinet as claimed in any one of claims 1 to 3, wherein the fourth resistor R4 includes: a potentiometer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022584639.2U CN213574763U (en) | 2020-11-10 | 2020-11-10 | Energy-saving control device with double cooling fans of cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022584639.2U CN213574763U (en) | 2020-11-10 | 2020-11-10 | Energy-saving control device with double cooling fans of cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213574763U true CN213574763U (en) | 2021-06-29 |
Family
ID=76536176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022584639.2U Active CN213574763U (en) | 2020-11-10 | 2020-11-10 | Energy-saving control device with double cooling fans of cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213574763U (en) |
-
2020
- 2020-11-10 CN CN202022584639.2U patent/CN213574763U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101667042B (en) | Fan type temperature control method and device | |
| CN107817843B (en) | Control method and control system for cooling system of forced oil circulation air-cooled transformer | |
| CN203378183U (en) | Heat dissipation device for frequency converter | |
| CN204423290U (en) | A kind of system closedown automatic heat radiation circuit, heat abstractor and electronic equipment | |
| CN108155667B (en) | Photovoltaic motor driver weak power control circuit and method | |
| CN112253521A (en) | Energy-saving control device with double cooling fans of cabinet | |
| CN213574763U (en) | Energy-saving control device with double cooling fans of cabinet | |
| EP4267888A1 (en) | Converting solar pv energy into thermal energy storage using heat-pump and resistive heating elements in water heater | |
| CN204243560U (en) | A kind of regulator cubicle of energy-saving radiating | |
| CN204259262U (en) | A kind of overtemperature protection module of LED actuation temperature warning circuit | |
| CN102857032A (en) | Simple temperature control speed regulation motor device | |
| CN112448657A (en) | Active temperature control method and device for motor driver of electric automobile | |
| CN111587041A (en) | Heat dissipation device of photovoltaic inverter and control method | |
| CN215991737U (en) | Combined heat dissipation system, electrical equipment and air conditioner | |
| CN216959395U (en) | Discharge device of super capacitor | |
| CN111953197B (en) | Multi-channel staggered PFC control system and method | |
| CN210781868U (en) | Radiating circuit automatically controlled by excitation silicon controlled module | |
| CN2420787Y (en) | Silicon controlled bridged semi-control rectified voltage stabilizing regulator | |
| CN109298729B (en) | Hot-spot temperature distribution-based fan grouping method for cooling system of oil-immersed power transformer | |
| CN214281348U (en) | Three-phase alternating current heater | |
| CN204046409U (en) | AC input current surge suppressor | |
| CN205681222U (en) | A kind of intelligent heat dissipation motor | |
| CN109980912A (en) | A kind of easy soft starting circuit | |
| CN2894194Y (en) | Special electric source device for hydrogen gas filled thyratron filament | |
| CN221428784U (en) | Frequency conversion control IC circuit structure and corresponding frequency conversion control circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |