CN216975301U - Electric control cabinet fan control device and electric control cabinet - Google Patents
Electric control cabinet fan control device and electric control cabinet Download PDFInfo
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- CN216975301U CN216975301U CN202123234661.5U CN202123234661U CN216975301U CN 216975301 U CN216975301 U CN 216975301U CN 202123234661 U CN202123234661 U CN 202123234661U CN 216975301 U CN216975301 U CN 216975301U
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Abstract
The application provides an automatically controlled cabinet fan controlling means for two at least fans to in the automatically controlled cabinet control, automatically controlled cabinet fan controlling means includes: a start-stop control module; the start-stop control module is arranged in the electric control cabinet and is electrically connected with a fan in the electric control cabinet; the start-stop control module is configured to conduct power supply lines of part or all of the fans in the electric control cabinet according to the temperature in the electric control cabinet, so that the power supply lines are started by the conducted fans. The influence of fluctuation of the environmental temperature of the electric control cabinet is avoided, when the temperature in the electric control cabinet is close to a preset temperature threshold value, the temperature in the electric control cabinet can fluctuate up and down at the preset temperature threshold value, and accordingly each fan in the electric control cabinet is started and stopped frequently, and the service life of the fan in the electric control cabinet is prolonged.
Description
Technical Field
The application relates to the technical field of mechanical engineering, in particular to an electric control cabinet fan control device and an electric control cabinet.
Background
The interior component during operation of automatically controlled cabinet can generate heat, and when the calorific capacity was higher than the heat dissipation capacity of automatically controlled cabinet, the temperature will surpass the highest temperature that the interior component of automatically controlled cabinet allowed in the automatically controlled cabinet, and then leads to the unable normal work of the interior component of automatically controlled cabinet. The electric control cabinet is internally provided with a fan, and the fan drives the air in the electric control cabinet to flow so as to realize the heat dissipation of the electric control cabinet.
At present, the start and stop of each fan are controlled according to the temperature in the electric control cabinet, when the temperature in the electric control cabinet is greater than a preset temperature threshold value, each fan in the electric control cabinet is started, and when the temperature in the electric control cabinet is less than the preset temperature threshold value, each fan in the electric control cabinet is stopped.
However, under the influence of the fluctuation of the environmental temperature of the electric control cabinet, when the temperature in the electric control cabinet is near the preset temperature threshold, the temperature in the electric control cabinet can fluctuate up and down at the preset temperature threshold, so that each fan in the electric control cabinet is started and stopped frequently, and the service life of the fan in the electric control cabinet is shortened.
SUMMERY OF THE UTILITY MODEL
In view of this, accuse cabinet fan controlling means and automatically controlled cabinet that this application provided can improve the life of the interior fan of automatically controlled cabinet.
In a first aspect, an embodiment of the present application provides an electric control cabinet fan control device, configured to control at least two fans in an electric control cabinet, where the electric control cabinet fan control device includes: a start-stop control module;
the start-stop control module is arranged in the electric control cabinet and is electrically connected with a fan in the electric control cabinet;
the start-stop control module is configured to conduct power supply lines of part or all of the fans in the electric control cabinet according to the temperature in the electric control cabinet, so that the power supply lines are started by the conducted fans.
In a first possible implementation manner, with reference to the first aspect, the electric control cabinet fan control device further includes: a temperature sensor;
the temperature sensor is arranged in the electric control cabinet and is electrically connected with the start-stop control module;
the temperature sensor is configured to detect the temperature in the electric control cabinet and send a temperature signal for indicating the temperature in the electric control cabinet to the start-stop control module;
the start-stop control module is configured to conduct a power supply line of part or all of the fans in the electric control cabinet based on the temperature signal.
In a second possible implementation manner, with reference to the first possible implementation manner, the start-stop control module includes: at least two temperature controllers and a first fan power supply;
the signal end of each temperature controller is connected with the temperature sensor;
the input end of each temperature controller is connected with the first fan power supply;
the output end of each temperature controller is connected with one fan in the electric control cabinet, and the second ends of different temperature controllers are connected with different fans;
the temperature controllers are configured to be turned on or off based on the temperature signals, wherein the temperature controllers are turned on when the temperature signals indicate that the temperature in the electric control cabinet is greater than a first temperature threshold value, and are turned off when the temperature signals indicate that the temperature in the electric control cabinet is less than a second temperature threshold value, and different temperature controllers correspond to different first and second temperature threshold values.
In a third possible implementation manner, with reference to the second possible implementation manner, the first temperature threshold corresponding to the temperature controller is equal to the second temperature threshold.
In a fourth possible implementation manner, with reference to the third possible implementation manner, the start-stop control module includes N temperature controllers, the first temperature thresholds corresponding to the N temperature controllers are sequentially increased, and the first temperature threshold corresponding to the ith temperature controller in the N temperature controllers satisfies the following formula:
wherein, TiFor characterizing a first temperature threshold, T, corresponding to the ith thermostatuminMinimum ambient temperature, T, for characterizing the environment in which the electrical control cabinet is locatedumaxThe maximum environmental temperature for representing the environment of the electric control cabinetAnd T is used for representing the maximum temperature allowed in the electric control cabinet, and i is more than or equal to 1 and less than or equal to N.
In a fifth possible implementation manner, with reference to the third possible implementation manner, the temperature controller includes: the device comprises a switch, a relay, a reference power supply and a comparison circuit;
a first input end of the comparison circuit is connected with the temperature sensor, a second input end of the comparison circuit is connected with the reference power supply, and the output voltage of the reference power supply corresponds to the first temperature threshold value;
the output end of the comparison circuit is connected with the relay;
the first end of the switch is connected with the fan power supply, and the second end of the switch is connected with the fan;
the comparison circuit is configured to drive the relay to close the switch when the voltage of the first input terminal is greater than the voltage of the second input terminal, and to drive the relay to open the switch when the voltage of the first input terminal is less than the voltage of the second input terminal.
In a sixth possible implementation manner, with reference to the first possible implementation manner, the temperature sensor is disposed in an air duct in the electric control cabinet.
In a seventh possible implementation manner, with reference to the first aspect, the start-stop control module includes: at least two temperature control switches and a second fan power supply;
different temperature switches correspond to different on-off temperatures;
the first end of the temperature control switch is connected with the second fan power supply, the second end of the temperature control switch is connected with one fan in the electric control cabinet, and the second ends of different temperature control switches are connected with different fans;
the temperature control switch is configured to be closed when the temperature in the electric control cabinet is higher than the corresponding on-off temperature so as to switch on a power supply line connected with the fan to start the fan;
the temperature control switch is also configured to be disconnected when the temperature in the electric control cabinet is lower than the corresponding on-off temperature so as to disconnect a power supply line connected with the fan and stop the fan.
In a second aspect, an embodiment of the present application further provides an electric control cabinet, including: a cabinet, at least two fans, and an electrically controlled cabinet fan control apparatus of the first aspect or any possible implementation manner of the first aspect;
the at least two fans and the electric control cabinet fan control device are arranged in the cabinet body;
the at least two fans are respectively connected with the electric control cabinet fan control device;
the fan is configured to start or stop under control of the electrically controlled cabinet fan control means, depending on the temperature within the cabinet.
In a first possible implementation manner, with reference to the first aspect, the number of the fans is equal to that of the first aspect
Wherein, VmaxThe maximum ventilation volume V required for representing the heat dissipation of the electric control cabinetminUsed for representing the minimum ventilation volume, V, required by the heat dissipation of the electric control cabineteThe air quantity control device is used for representing the rated ventilation quantity of a single fan in the electric control cabinet.
According to the technical scheme, the start-stop control module is arranged in the electric control cabinet and is electrically connected with the fan in the electric control cabinet; open and stop control module can switch on the power supply line of the partial or whole fan in the automatically controlled cabinet according to the temperature in the automatically controlled cabinet to make the power supply line by the fan that switches on start, avoided by the undulant influence of automatically controlled cabinet ambient temperature, when the temperature was in near the temperature threshold value of predetermineeing in the automatically controlled cabinet, the temperature in the automatically controlled cabinet can be undulant about temperature threshold value of predetermineeing, leads to frequently opening of each fan in the automatically controlled cabinet to open and stop, thereby the life of extension automatically controlled cabinet internal fan.
Drawings
Fig. 1 is a schematic view of a fan control device of an electric control cabinet according to an embodiment of the present disclosure;
fig. 2 is a schematic view of a fan control device of an electric control cabinet according to a second embodiment of the present application;
fig. 3 is a schematic view of a fan control device of an electric control cabinet according to a second embodiment of the present application;
fig. 4 is a schematic view of a fan control device of an electric control cabinet according to a second embodiment of the present application;
fig. 5 is a schematic view of a fan control device of an electric control cabinet according to a second embodiment of the present application;
fig. 6 is a schematic view of a fan control device of an electric control cabinet according to a second embodiment of the present application;
fig. 7 is a schematic view of an electric control cabinet provided in the third embodiment of the present application.
List of reference numerals:
100: an electric control cabinet 200: start-stop control module 300: fan with cooling device
400: temperature sensor 201: the temperature controller 202: first fan power supply
2011: switch 2012: the relay 2013: reference power supply
2014: the comparison circuit 500: air duct 203: temperature control switch
204: second fan power supply 800: electric cabinet fan control device 900: cabinet body
Detailed Description
As mentioned above, the components in the electric control cabinet generate heat when working, and when the heat generated by the components is higher than the heat dissipation capacity of the electric control cabinet, the temperature in the electric control cabinet exceeds the maximum temperature allowed by the components in the electric control cabinet, so that the components in the electric control cabinet cannot work normally. The electric control cabinet is internally provided with a fan, and the fan drives the air in the electric control cabinet to flow so as to realize the heat dissipation of the electric control cabinet. At present, the start and stop of each fan are controlled according to the temperature in an electric control cabinet, when the temperature in the electric control cabinet is greater than a preset temperature threshold value, each fan in the electric control cabinet is started, and when the temperature in the electric control cabinet is less than the preset temperature threshold value, each fan in the electric control cabinet is stopped. However, under the influence of the fluctuation of the environmental temperature of the electric control cabinet, when the temperature in the electric control cabinet is near the preset temperature threshold, the temperature in the electric control cabinet can fluctuate up and down at the preset temperature threshold, so that each fan in the electric control cabinet is frequently started and stopped, and the service life of the fan in the electric control cabinet is shortened.
In the embodiment of the application, the electric control cabinet fan control device comprises a start-stop control module; the start-stop control module is arranged in the electric control cabinet and is electrically connected with the fan in the electric control cabinet, and the start-stop control module can conduct the power supply lines of part or all fans in the electric control cabinet according to the temperature in the electric control cabinet so as to start the fans with the conducted power supply lines. The influence of fluctuation of the environmental temperature of the electric control cabinet is avoided, when the temperature in the electric control cabinet is close to a preset temperature threshold value, the temperature in the electric control cabinet can fluctuate up and down at the preset temperature threshold value, and the condition that each fan in the electric control cabinet is frequently started and stopped is caused, so that the service life of the fan in the electric control cabinet is prolonged.
The following describes the electric control cabinet fan control device and the electric control cabinet provided in the embodiments of the present application in detail with reference to the accompanying drawings.
Example one
Fig. 1 is a schematic view of an electric control cabinet fan control device 800 according to an embodiment of the present application, and as shown in fig. 1, the electric control cabinet fan control device 800 includes: a start-stop control module 200;
the start-stop control module 200 is arranged inside the electric control cabinet 100, and the start-stop control module 200 is electrically connected with the fan 300 in the electric control cabinet 100;
the start-stop control module 200 is configured to conduct the power supply line of some or all of the fans 300 in the electric control cabinet 100 according to the temperature in the electric control cabinet 100, so that the power supply line is started by the conducted fans 300.
In this embodiment, the start-stop control module 200 may be disposed inside the electric control cabinet 100 and electrically connected to the fan 300 inside the electric control cabinet 100, and when the fan 300 is controlled to operate, the start-stop control module 200 starts some or all of the fans 300 inside the electric control cabinet 100 according to the temperature inside the electric control cabinet 100, so as to reduce the temperature inside the electric control cabinet 100 and avoid overheating and damage of internal components of the electric control cabinet 100. Because the start-stop control module 200 can control the start or stop of part or all of the fans 300 according to the temperature in the electric control cabinet 100, the situation that all fans are frequently started and stopped near a temperature control point is avoided, and the service life of the fans can be prolonged.
It should be noted that the fan 300 may be a fan with fixed output power, or may be a fan with variable rotation speed and output power, and the embodiment of the present application is not limited thereto. The temperature in the electric control cabinet 100 refers to an average temperature or a temperature at a certain position in the electric control cabinet 100 when the electric control cabinet 100 is in normal operation, and the temperature in the electric control cabinet 100 can be detected by one or more temperature sensors located in the electric control cabinet 100.
Example two
Fig. 2 is a schematic view of an electric control cabinet fan control apparatus 800 according to a second embodiment of the present application, and as shown in fig. 2, the electric control cabinet fan control apparatus 800 further includes: a temperature sensor 400;
the temperature sensor 400 is arranged inside the electric control cabinet 100, and the temperature sensor 400 is electrically connected with the start-stop control module 200;
the temperature sensor 400 is configured to detect a temperature within the electric control cabinet 100 and send a temperature signal indicative of the temperature within the electric control cabinet 100 to the start-stop control module;
the start-stop control module 200 is configured to turn on the power supply line of some or all of the fans 300 in the electric control cabinet 100 based on the temperature signal.
In the embodiment of the present application, there is at least one temperature sensor 400 disposed inside the electric cabinet 100 for measuring the temperature inside the electric cabinet 100. When the temperature of the electric control cabinet 100 is measured, the temperature sensor 400 measures a temperature signal and sends the temperature signal to the start-stop control module 200, and the start-stop control module 200 switches on a power supply line for controlling the power supply operation of one or more fans 300 according to the temperature signal, so that the fans 300 operate. Detect the temperature in the automatically controlled cabinet 100 through temperature sensor 400 to start to stop control module and send the temperature signal that is used for instructing the temperature in the automatically controlled cabinet 100, start to stop control module 200 and switch on some or all fan 300's in the automatically controlled cabinet 100 power supply line based on temperature signal, can further improve the accuracy of fan 300 running time, avoided opening the electric energy loss that fan 300 made at the heat dissipation that need not to automatically controlled cabinet 100.
In one possible implementation, as shown in fig. 3, the start-stop control module 200 includes: at least two thermostats 201 and a first fan power supply 202;
the signal end of each temperature controller 201 is connected with a temperature sensor 400;
the input end of each temperature controller 201 is connected with a first fan power supply 202;
the output end of each temperature controller 201 is connected with one fan 300 in the electric cabinet 100, and the second ends of different temperature controllers 201 are connected with different fans 300;
the temperature controller 201 is configured to be turned on or off based on a temperature signal, wherein the temperature controller 201 is turned on when the temperature signal indicates that the temperature in the electric cabinet 100 is greater than a first temperature threshold value, and the temperature controller 201 is turned off when the temperature signal indicates that the temperature in the electric cabinet 100 is less than a second temperature threshold value, and different temperature controllers 201 correspond to different first and second temperature threshold values.
In the embodiment of the present application, in order to accurately control the start and stop of each fan 300, at least two thermostats 201 and a first fan power supply 202 are included in the start-stop control module 200. One port of each temperature controller 201 is connected to the temperature sensor 400, the port is called a signal port for signal interaction, the other end of each temperature controller 201 is connected to the first fan power supply 202, and the port is called an input port for providing electric energy to the temperature controller 201. Each temperature controller 201 is provided with a control output end, and is connected with different fans 300 to control the start and stop of the different fans 300 one by one. Each temperature controller 201 is turned on or off according to a temperature signal in the start-stop control module 200, different temperature controllers 201 have different first temperature thresholds and second temperature thresholds in the process of controlling the start and stop of the fan 300, the temperature controller 201 is turned on when the temperature of the electric control cabinet 100 is greater than the first temperature threshold, and is turned off when the temperature of the electric control cabinet 100 is less than the second temperature threshold.
The first temperature threshold and the second temperature threshold, which are different and exist in different temperature controllers 201, may be set to the temperature threshold of the fixed temperature interval or may be set to the temperature threshold of the non-fixed temperature interval. The output end of each temperature controller 201 is connected with one fan 300 in the electric control cabinet 100, and the second ends of different temperature controllers 201 are connected with different fans 300; the temperature controller 201 is configured to be turned on or off based on a temperature signal, wherein the temperature controller 201 is turned on when the temperature signal indicates that the temperature in the electric control cabinet 100 is greater than a first temperature threshold, and the temperature controller 201 is turned off when the temperature signal indicates that the temperature in the electric control cabinet 100 is less than a second temperature threshold, and different temperature controllers 201 correspond to different first and second temperature thresholds. The temperature difference is realized, the fans 300 with different quantities are started and stopped, the cooling efficiency of the electric control cabinet 100 is higher, and the loss of the fans 300 and the electric energy loss are effectively avoided.
In a possible implementation manner, the first temperature threshold corresponding to the thermostat 201 is equal to the second temperature threshold.
In this application embodiment, in order to realize more accurate fan 300 control, can set up the first temperature threshold value and the second temperature threshold value that each temperature controller 201 corresponds to the same numerical value, through the above-mentioned setting, can carry out opening of fan 300 at certain temperature point and stop, realize accurate accuse temperature.
In a possible implementation manner, the start-stop control module 200 includes N temperature controllers 201, the first temperature thresholds corresponding to the N temperature controllers 201 are sequentially increased, and the first temperature threshold corresponding to the ith temperature controller 201 in the N temperature controllers 201 satisfies the following formula:
wherein, TiFor characterizing a first temperature threshold, T, corresponding to the ith thermostat 201uminMinimum ambient temperature, T, for characterizing the environment in which the electrical cabinet 100 is locatedumaxThe temperature value T is used for representing the maximum environmental temperature of the environment where the electric control cabinet 100 is located, T is used for representing the maximum temperature allowed in the electric control cabinet 100, and i is greater than or equal to 1 and less than or equal to N.
In the embodiment of the present application, in order to facilitate the operation of the fan 300 to be controlled, the first temperature threshold of each temperature controller 201 is set at regular intervals, and as shown in the above formula, different first temperature thresholds corresponding to each temperature controller 201 are calculated according to the above formula and the previously measured maximum ambient temperature and minimum ambient temperature of the electric control cabinet 100. The start and stop of the fan 300 can be more conveniently controlled according to the preset temperature threshold value, and the temperature can be accurately controlled.
In one possible implementation, as shown in fig. 4, the thermostat 201 includes: a switch 2011, a relay 2012, a reference power source 2013 and a comparison circuit 2014;
a first input end of the comparison circuit 2014 is connected with the temperature sensor 400, a second input end of the comparison circuit 2014 is connected with the reference power source 2013, and the output voltage of the reference power source 2013 corresponds to a first temperature threshold;
the output end of the comparison circuit 2014 is connected with the relay 2012;
a first end of the switch 2011 is connected with the power supply of the fan 300, and a second end of the switch 2011 is connected with the fan 300;
the comparison circuit 2014 is configured to drive the relay 2012 to close the switch 2011 when the voltage of the first input terminal is greater than the voltage of the second input terminal, and to drive the relay 2012 to open the switch 2011 when the voltage of the first input terminal is less than the voltage of the second input terminal.
In the embodiment of the application, the switch 2011, the relay 2012, the reference power source 2013 and the comparison circuit 2014 are arranged, so that the temperature signal is directly converted into the electric signal, the switch 2011 is driven to control the fan 300, the control efficiency of the fan 300 of the electric control cabinet 100 is improved, and the service cycle of the electric control cabinet 100 is prolonged.
In one possible implementation, as shown in fig. 5, the temperature sensor 400 is disposed in the air duct 500 in the electric cabinet 100.
In the embodiment of the present application, because there is a great difference in the internal temperature of different areas of the electric control cabinet 100, the temperature sensor 400 may not accurately detect the internal temperature of the electric control cabinet 100, and the temperature sensor 400 is disposed in the air duct 500 of the electric control cabinet 100, so that the overall ambient temperature of the electric control cabinet 100 can be accurately measured, and the air duct 500 at this position can be the heat dissipation air exhaust air duct 500.
In one possible implementation, as shown in fig. 6, the start-stop control module 200 includes: at least two temperature controlled switches 203 and a second fan power supply 204;
different switches 2011 correspond to different on-off temperatures;
the first end of the temperature control switch 203 is connected with the second fan power supply 204, the second end of the temperature control switch 203 is connected with one fan 300 in the electric control cabinet 100, wherein the second ends of different temperature control switches 203 are connected with different fans 300;
the temperature control switch 203 is configured to be closed when the temperature in the electric control cabinet 100 is higher than the corresponding on-off temperature, so as to switch on a power supply line connected with the fan 300, and start the fan 300;
the temperature control switch 203 is also configured to be turned off when the temperature inside the electric cabinet 100 is less than the corresponding on-off temperature, so as to disconnect the power supply line to the fan 300 and stop the fan 300.
In the embodiment of the present application, for the consideration of cost requirements, the fan 300 can also be controlled by directly using the temperature control switch 203 by setting at least two temperature control switches 203 and the second fan power supply 204 on the start-stop control module 200, and when the temperature control switch 203 is damaged, the product can be repaired by directly replacing the temperature control switch 203. The maintenance cost of the electric control cabinet 100 is reduced. In addition, the second fan power supply 204 is only different from the first fan power supply 202 in the power supply of the fan 300, and does not represent that the power supplies of the fan 300 are in sequence.
EXAMPLE III
Fig. 7 is an electric control cabinet 100 provided in the third embodiment of the present application, including: the cabinet body 900, at least two fans 300, and the electric control cabinet fan control device 800 in the first embodiment or the second embodiment and any possible implementation manner thereof;
at least two fans 300 and an electric control cabinet fan control device 800 are arranged in the cabinet body 900;
at least two fans 300 are respectively connected with the electric control cabinet fan control device 800;
the fan 300 is configured to start or stop under the control of the electronic cabinet fan control device 800 depending on the temperature inside the cabinet 900.
In the embodiment of the present application, the electric control cabinet fan control device 800 and the at least two fans 300 are arranged inside the cabinet body 900 of the electric control cabinet 100, so that the temperature of the electric control cabinet 100 can be controlled, and the damage of internal components caused by overheating of the electric control cabinet 100 is avoided.
In one possible implementation, the number of fans 300 is equal to
Wherein, VmaxFor characterizing the maximum ventilation volume, V, required for heat dissipation of the electric control cabinet 100minFor representing the minimum ventilation, V, required for heat dissipation of the electric cabinet 100eFor characterizing the nominal ventilation of a single fan 300 in the cabinet 100. In the embodiment of the present application,
in the embodiment of the present application, through the above calculation formula of the number of fans 300, the number of fans 300 required for heat dissipation of the electric control cabinet 100 can be accurately calculated, so that the cost problem or the heat dissipation problem caused by unreasonable setting of the number of fans 300 is avoided. The maximum ventilation volume and the minimum ventilation volume are measured in advance according to the actual operation of the electric control cabinet 100, and the rated ventilation volume of the fan 300 can be obtained through measurement or can be obtained through parameters of elements.
While the present application has been illustrated and described in detail in the drawings and foregoing description of the preferred embodiments, the present application is not limited to the disclosed embodiments, and it will be apparent to those skilled in the art that various combinations of the code auditing means in the various embodiments described above may be used to obtain further embodiments of the present application, which are also within the scope of the present application.
Claims (10)
1. An electric control cabinet fan control device (800) for controlling at least two fans (300) in an electric control cabinet (100), characterized in that the electric control cabinet fan control device (800) comprises: a start-stop control module (200);
the start-stop control module (200) is arranged in the electric control cabinet (100), and the start-stop control module (200) is electrically connected with a fan (300) in the electric control cabinet (100);
the start-stop control module (200) is configured to conduct the power supply line of part or all of the fans (300) in the electric control cabinet (100) according to the temperature in the electric control cabinet (100) so that the power supply line is started by the conducted fans (300).
2. The electrically controlled cabinet fan control apparatus (800) of claim 1, wherein the electrically controlled cabinet fan control apparatus (800) further comprises: a temperature sensor (400);
the temperature sensor (400) is arranged inside the electric control cabinet (100), and the temperature sensor (400) is electrically connected with the start-stop control module (200);
the temperature sensor (400) is configured to detect a temperature within the electrically controlled cabinet (100) and to send a temperature signal to the start-stop control module (200) indicative of the temperature within the electrically controlled cabinet (100);
the start-stop control module (200) is configured to conduct the power supply line of part or all of the fans (300) in the electric control cabinet (100) based on the temperature signal.
3. The electrical cabinet fan control apparatus (800) of claim 2, wherein the start-stop control module (200) comprises: at least two thermostats (201) and a first fan power supply (202);
the signal end of each temperature controller (201) is connected with the temperature sensor (400);
the input end of each temperature controller (201) is connected with the first fan power supply (202);
the output end of each temperature controller (201) is connected with one fan (300) in the electric control cabinet (100), and the second ends of different temperature controllers (201) are connected with different fans (300);
the thermostat (201) is configured to be turned on or off based on the temperature signal, wherein the thermostat (201) is turned on when the temperature signal indicates that the temperature in the electric cabinet (100) is greater than a first temperature threshold, and the thermostat (201) is turned off when the temperature signal indicates that the temperature in the electric cabinet (100) is less than a second temperature threshold, and different ones of the thermostats (201) correspond to different first and second temperature thresholds.
4. The electric cabinet fan control device (800) according to claim 3, wherein the first temperature threshold corresponding to the temperature controller (201) is equal to the second temperature threshold.
5. The electric cabinet fan control device (800) according to claim 4, wherein the start/stop control module (200) comprises N temperature controllers (201), the first temperature thresholds corresponding to the N temperature controllers (201) are sequentially increased, and the first temperature threshold corresponding to the ith temperature controller (201) in the N temperature controllers (201) satisfies the following formula:
wherein, TiFor characterizing a first temperature threshold, T, corresponding to the ith thermostat (201)uminFor characterizing a minimum ambient temperature, T, of an environment in which the electrical cabinet (100) is locatedumaxThe maximum environment temperature is used for representing the environment where the electric control cabinet (100) is located, T is used for representing the maximum temperature allowed in the electric control cabinet (100), and i is more than or equal to 1 and less than or equal to N.
6. The electric cabinet fan control device (800) according to claim 4, wherein the thermostat (201) comprises: the device comprises a switch (2011), a relay (2012), a reference power supply (2013) and a comparison circuit (2014);
a first input terminal of the comparison circuit (2014) is connected with the temperature sensor (400), a second input terminal of the comparison circuit (2014) is connected with the reference power supply (2013), wherein the output voltage of the reference power supply (2013) corresponds to the first temperature threshold;
the output end of the comparison circuit (2014) is connected with the relay (2012);
the first end of the switch (2011) is connected with the power supply of the fan (300), and the second end of the switch (2011) is connected with the fan (300);
the comparison circuit (2014) is configured to drive the relay (2012) to close the switch (2011) when the voltage at the first input terminal is greater than the voltage at the second input terminal, and to drive the relay (2012) to open the switch (2011) when the voltage at the first input terminal is less than the voltage at the second input terminal.
7. The electrical cabinet fan control apparatus (800) of claim 2, wherein the temperature sensor (400) is disposed within a duct (500) in the electrical cabinet (100).
8. The electrical cabinet fan control apparatus (800) of claim 1, wherein the start-stop control module (200) comprises: at least two temperature controlled switches (203) and a second fan power supply (204);
different switches (2011) correspond to different on-off temperatures;
the first end of the temperature control switch (203) is connected with the second fan power supply (204), the second end of the temperature control switch (203) is connected with one fan (300) in the electric control cabinet (100), and the second ends of different temperature control switches (203) are connected with different fans (300);
the temperature control switch (203) is configured to be closed when the temperature in the electric control cabinet (100) is higher than the corresponding on-off temperature so as to switch on a power supply line connected with the fan (300) and start the fan (300);
the temperature control switch (203) is also configured to be disconnected when the temperature in the electric control cabinet (100) is lower than the corresponding on-off temperature so as to disconnect a power supply line connected with the fan (300) and stop the fan (300).
9. An electronic control cabinet (100), comprising: -a cabinet (900), at least two fans (300) and an electrically controlled cabinet fan control arrangement (800) according to any of claims 1-8;
the at least two fans (300) and the electric control cabinet fan control device (800) are arranged in the cabinet body (900);
the at least two fans (300) are respectively connected with the electric control cabinet fan control device (800);
the fan (300) is configured to be started or stopped under the control of the electric control cabinet fan control device (800) according to the temperature in the cabinet body (900).
10. The electrical control cabinet (100) according to claim 9, wherein the number of fans (300) is equal to
Wherein, VmaxFor characterizing a maximum ventilation volume, V, required for heat dissipation of the electrical cabinet (100)minFor characterizing a minimum ventilation, V, required for the dissipation of heat by said electrical cabinet (100)eFor characterizing the nominal ventilation of a single fan (300) in the electrical cabinet (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123234661.5U CN216975301U (en) | 2021-12-21 | 2021-12-21 | Electric control cabinet fan control device and electric control cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123234661.5U CN216975301U (en) | 2021-12-21 | 2021-12-21 | Electric control cabinet fan control device and electric control cabinet |
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| Publication Number | Publication Date |
|---|---|
| CN216975301U true CN216975301U (en) | 2022-07-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123234661.5U Active CN216975301U (en) | 2021-12-21 | 2021-12-21 | Electric control cabinet fan control device and electric control cabinet |
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| Country | Link |
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| CN (1) | CN216975301U (en) |
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2021
- 2021-12-21 CN CN202123234661.5U patent/CN216975301U/en active Active
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