CN113163671A - Mining flame-proof type frequency converter box and heat dissipation system thereof - Google Patents
Mining flame-proof type frequency converter box and heat dissipation system thereof Download PDFInfo
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- CN113163671A CN113163671A CN202110234257.3A CN202110234257A CN113163671A CN 113163671 A CN113163671 A CN 113163671A CN 202110234257 A CN202110234257 A CN 202110234257A CN 113163671 A CN113163671 A CN 113163671A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20009—Modifications to facilitate cooling, ventilating, or heating using a gaseous coolant in electronic enclosures
- H05K7/20136—Forced ventilation, e.g. by fans
- H05K7/20145—Means for directing air flow, e.g. ducts, deflectors, plenum or guides
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/2039—Modifications to facilitate cooling, ventilating, or heating characterised by the heat transfer by conduction from the heat generating element to a dissipating body
- H05K7/20409—Outer radiating structures on heat dissipating housings, e.g. fins integrated with the housing
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Abstract
The invention discloses a mining explosion-proof frequency converter box and a heat dissipation system thereof, wherein the heat dissipation system comprises a heat conduction module, a forced air cooling module, a flow guide module and a single-chip microcomputer control module, the flow guide module is arranged under a heat dissipation fin, the air inlet end of the flow guide module is connected with the air outlet of a fan, the air outlet end of the flow guide module is connected with the bottom end of the heat dissipation fin, the flow guide module is used for adjusting the wind direction, the guide module is matched with the fan to optimize cooling airflow fluid, so that the direction of the cooling airflow is changed, the airflow is forced to convect upwards with the radiating fins, the heat convection effect is optimized, the heat dissipation device has the advantages that the heat dissipation work is efficiently carried out on the heat of the power element under the condition that the explosion-proof performance is met, the danger of potential safety hazards caused by out-of-control mine equipment is reduced, the safety of mine operation is improved, and the intelligent temperature detection is realized to control the starting of the fan.
Description
Technical Field
The invention relates to the field of mining explosion-proof frequency converter boxes, in particular to a mining explosion-proof frequency converter box and a heat dissipation system thereof.
Background
With the development of high-power electronic components, the heat productivity of the power components in unit volume is correspondingly increased. The power consumption of a power switch device in equipment such as a high-power frequency converter is particularly prominent, the power consumption can be converted into heat to cause heating of a tube core of the power device and increase of junction temperature, and if the heat cannot be effectively and timely released, the working performance of the device can be influenced, so that the working reliability of a system is reduced, and even the device is damaged. Resulting in a breakdown of the entire system with attendant and property damage. All electronic components of the mining explosion-proof frequency converter box are arranged inside the sealed explosion-proof box body, and heat dissipation is not facilitated.
Disclosure of Invention
The invention aims to provide a mining explosion-proof frequency converter box and a heat dissipation system thereof, which can efficiently conduct heat to power element heat under the condition of meeting the explosion-proof performance.
In order to solve the problems, the technical scheme of the invention is as follows:
a heat dissipation system of a mining explosion-proof frequency converter box comprises a heat conduction module, a forced air cooling module, a flow guide module and a single chip microcomputer control module;
the heat conduction module comprises a heat dissipation substrate, a steel flange and a plurality of heat pipes, wherein the heat dissipation substrate comprises a first surface and a second surface which are opposite, an IGBT power element is installed on the first surface of the heat dissipation substrate through heat conduction silicone grease, the steel flange is fixedly installed on one side of the second surface of the heat dissipation substrate, one surface, far away from the heat dissipation substrate, of the steel flange is fixedly installed on the inner side of a rear wall plate of the frequency converter box body, the steel flange and the rear wall plate of the frequency converter box body form an explosion-proof joint surface, one ends of the heat pipes are fixedly installed on the second surface of the heat dissipation substrate, and the other ends of the heat pipes penetrate through the steel flange and extend out of the frequency converter box body;
the forced air cooling module comprises heat dissipation fins and a fan, the heat dissipation fins are inserted into the heat pipes, and the fan is arranged on the outer side of the rear wall plate of the frequency converter box body and is positioned below the heat dissipation fins;
the flow guide module is arranged right below the radiating fins, the air inlet end of the flow guide module is connected with the air outlet of the fan, the air outlet end of the flow guide module is connected with the bottom ends of the radiating fins, and the flow guide module is used for adjusting the wind direction;
the single chip microcomputer control module comprises a temperature sensor and a control chip, the temperature sensor is used for collecting temperature values of the radiating substrate, a signal input end of the control chip is connected with the temperature sensor, the temperature sensor transmits the collected temperature values to the inside of the control chip, a signal output end of the control chip is connected with the fan, the control chip compares the temperature values collected by the temperature sensor with an internal preset value of the control chip, and then the fan is controlled to be started and closed.
Preferably, will the width direction and the length direction of the installation face of heat dissipation base plate are defined as X direction and Y direction respectively, will be perpendicular to the direction definition of the installation face of heat dissipation base plate is the Z direction, the fan is installed on the X direction, and rotates around the X direction, the water conservancy diversion module includes three whole wind guide plates, three whole wind guide plates with radiating fin's bottom surface, the lateral surface of converter box back wallboard encloses into the water conservancy diversion space that has an open face, the open face with the air outlet of fan is relative, the cooling steam flow of fan output gets into in the water conservancy diversion space, the air current upwards with radiating fin forces the convection current to dispel the heat.
Preferably, the whole wind guide plate which is arranged right opposite to the fan is defined as a first whole wind guide plate, the first whole wind guide plate is obliquely arranged along the X direction, and one end close to the fan is far away from one end of the fan and is low.
Preferably, the included angle Φ between the first wind deflector and the bottom surface of the heat dissipation fin is 35 ° or 45 ° or 55 ° or 65 °.
Preferably, will the width direction and the length direction of the installation face of heat dissipation base plate are defined as X direction and Y direction respectively, will be perpendicular to the direction definition of the installation face of heat dissipation base plate is the Z direction, the fan is installed on the Y direction, and rotates around the Y direction, the water conservancy diversion module includes three whole wind guide plates, three whole wind guide plates with radiating fin's bottom surface, the lateral surface of converter box back wallboard encloses into the water conservancy diversion space that has an open face, the open face with the air outlet of fan is relative, the cooling steam flow of fan output gets into in the water conservancy diversion space, the air current upwards with radiating fin forces the convection current to dispel the heat.
Preferably, the two rectification air deflectors symmetrically arranged along the X direction are respectively defined as a first rectification air deflector and a second rectification air deflector, and the first rectification air deflector and the second rectification air deflector are obliquely arranged along the X direction.
Preferably, the angle Ψ between the first rectification baffle and the YZ plane is 12 °, or 6 °, or 0 °.
Preferably, the width direction and the length direction of the installation surface of the heat dissipation substrate are respectively defined as an X direction and a Y direction, the direction perpendicular to the installation surface of the heat dissipation substrate is defined as a Z direction, the fan is installed on the Z direction and rotates around the Z direction, the flow guide module comprises three air guide plates and three air guide plates, an opening surface is enclosed by the bottom surfaces of the air guide plates and the heat dissipation fins, the opening surface is opposite to an air outlet of the fan, cooling steam output by the fan enters the flow guide space, and air flow upwards dissipates heat by forced convection with the heat dissipation fins.
Preferably, the whole-air guide plate arranged right opposite to the fan is defined as a first whole-air guide plate, and an included angle between the first whole-air guide plate and the bottom surface of the radiating fin
At 52 deg. or 62 deg. or 72 deg..
Preferably, the width direction and the length direction of the mounting surface of the heat dissipation substrate are respectively defined as an X direction and a Y direction, the direction perpendicular to the mounting surface of the heat dissipation substrate is defined as a Z direction, the fan is mounted on the Z direction and rotates around the Z direction, the flow guide module comprises four air distribution flow guide plates, a flow guide space with an open surface is defined by the four air distribution flow guide plates and the bottom surface of the heat dissipation fin, two air distribution flow guide plates symmetrically arranged along the X direction are respectively defined as a first air distribution flow guide plate and a second air distribution flow guide plate, the first air distribution flow guide plate and the second air distribution flow guide plate are obliquely arranged along the X direction, the open surface is opposite to the air outlet of the fan, the air distribution flow guide plate arranged right opposite to the fan is defined as a third air distribution flow guide plate, and the third air distribution flow guide plate is obliquely arranged along the Z direction, and one end close to the fan is far away from one end of the fan and is low, the flow guide space forms a funnel-shaped structure with a large upper part and a small lower part, cooling steam flow output by the fan enters the flow guide space, and the air flow upwards carries out heat dissipation with the forced convection of the heat dissipation fins.
Preferably, the third wind-rectifying guide plate and the bottom surface of the heat dissipation fin form an included angle
At 52 deg. or 62 deg. or 72 deg..
Preferably, a groove is formed in the second surface of the heat dissipation substrate, the heat pipe comprises an evaporation section and a condensation section, the evaporation section and the condensation section are L-shaped, and the evaporation section is embedded in the groove.
Preferably, the model of the temperature sensor is a DS18B20 temperature sensor.
Preferably, the model of the control chip is LPC 1768.
Based on the same inventive concept, the invention provides a mining explosion-proof frequency converter box, which comprises a frequency converter and the heat dissipation system.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages and positive effects:
1) the invention provides a heat dissipation system of a mining explosion-proof frequency converter box, which comprises a heat conduction module, a forced air cooling module, a flow guide module and a single-chip microcomputer control module, wherein the flow guide module is arranged under a heat dissipation fin, the air inlet end of the flow guide module is connected with the air outlet of a fan, the air outlet end of the flow guide module is connected with the bottom end of the heat dissipation fin, the flow guide module is used for adjusting the wind direction, cooling airflow fluid is optimized through the cooperation of the flow guide module and the fan, the direction of the cooling airflow is changed, the airflow is forced to convect upwards with the heat dissipation fin, the heat transfer effect is optimized, the heat dissipation work is efficiently carried out on the heat of a power element under the condition of meeting the explosion-proof performance, the danger of the runaway equipment under the mine and the potential safety hazard are reduced, the safety of the operation under the mine is improved, and the intelligent temperature detection is realized to control the start of the fan.
2) According to the heat dissipation system of the mining explosion-proof frequency converter box, the groove is formed in the second surface of the heat dissipation substrate, the heat pipe comprises the evaporation section and the condensation section, the evaporation section and the condensation section are L-shaped, and the evaporation section is embedded in the groove, so that the evaporation section of the heat pipe can be guaranteed to be in full heat conduction contact with the back plate of the heat dissipation substrate.
Drawings
FIG. 1 is a three-dimensional diagram of a heat dissipation system of a mining explosion-proof frequency converter box according to a first embodiment of the invention;
FIG. 2 is a left side view of a heat dissipation system of a mining flameproof frequency converter box according to the first embodiment of the invention;
FIG. 3 is a front sectional view of a heat dissipation system of a mining flameproof frequency converter box according to a first embodiment of the present invention;
FIG. 4 is a schematic diagram of a heat pipe of a heat dissipation system of a mining flameproof frequency converter box according to an embodiment of the present invention covering an IGBT power element;
FIG. 5 is a structural diagram of a heat pipe of a heat dissipation system of a mining flameproof frequency converter box according to the first embodiment of the present invention;
FIG. 6 is a schematic diagram of a heat pipe staggered arrangement of a heat dissipation system of a mining flameproof frequency converter box according to an embodiment of the present invention;
fig. 7 is a schematic view of a flow guide module of a heat dissipation system of a mining explosion-proof frequency converter box according to a first embodiment of the invention;
fig. 8 to 9 are schematic views of a convection heat exchange structure of a flow guide module of a heat dissipation system of a mining explosion-proof frequency converter box according to an embodiment of the present invention;
fig. 10 is an installation schematic diagram of a single-chip microcomputer control module of a heat dissipation system of a mining explosion-proof frequency converter box according to a first embodiment of the invention;
FIG. 11 is a schematic diagram of an automatic temperature control fan circuit of a heat dissipation system of a mining flameproof frequency converter box according to an embodiment of the present invention;
FIG. 12 is a flow chart of an operation of an automatic temperature control fan of a heat dissipation system of a mining flameproof frequency converter box according to a first embodiment of the present invention;
fig. 13 is a schematic view of a flow guide module of a heat dissipation system of a mining flameproof frequency converter box according to a second embodiment of the present invention;
fig. 14 to 15 are schematic views of a convection heat exchange structure of a flow guide module of a heat dissipation system of a mining explosion-proof frequency converter box according to a second embodiment of the present invention;
fig. 16 is a schematic view of a flow guide module of a heat dissipation system of a mining explosion-proof frequency converter box according to a third embodiment of the invention;
fig. 17 to fig. 18 are schematic views of a convection heat exchange structure of a flow guide module of a heat dissipation system of a mining explosion-proof frequency converter box according to a third embodiment of the present invention;
fig. 19 is a schematic view of a flow guide module of a heat dissipation system of a mining explosion-proof frequency converter box according to a fourth embodiment of the invention;
fig. 20 to 21 are schematic views of a convection heat exchange structure of a flow guide module of a heat dissipation system of a mining explosion-proof frequency converter box according to a fourth embodiment of the present invention;
fig. 22 is a schematic structural diagram of a mining flameproof frequency converter box provided in the fifth embodiment of the present invention.
Description of reference numerals:
1: a heat conduction module; 11: a heat-dissipating substrate; 111: a groove; 12: a steel flange; 13: a heat pipe; 131: an evaporation section; 132: a condensing section; 2: a forced cold air module; 21: a heat dissipating fin; 22: a fan; 3: a flow guide module; 4: a single chip microcomputer control module; 5: a fan housing; 6: an IGBT power element; 7: a frequency converter; 71: frequency converter box body rear wall board.
Detailed Description
The mining explosion-proof frequency converter box and the heat dissipation system thereof provided by the invention are further described in detail with reference to the attached drawings and specific embodiments. Advantages and features of the present invention will become apparent from the following description and from the claims.
Example one
Referring to fig. 1 to 12, the embodiment provides a heat dissipation system of a mining explosion-proof frequency converter box, which includes a heat conduction module 1, a forced air cooling module 2, a flow guide module 3 and a single chip microcomputer control module 4;
referring to fig. 2, the heat conduction module 1 includes a heat dissipation substrate 11, a steel flange 12, and a plurality of heat pipes 13, the heat dissipation substrate 11 includes a first surface and a second surface opposite to each other, referring to fig. 1, the IGBT power element 6 is mounted on the first surface of the heat dissipation substrate 11 through heat conductive silicone grease, the steel flange 12 is fixedly mounted on one side of the second surface of the heat dissipation substrate 11, one side of the steel flange 12 away from the heat dissipation substrate 11 is fixedly mounted on the inner side of the rear wall plate 71 of the frequency converter case, the steel flange 12 and the rear wall plate 71 of the frequency converter case form an explosion-proof junction surface to meet the explosion-proof requirement, one end of the heat pipe 13 is fixedly mounted on the second surface of the heat dissipation substrate 11, the other end of the heat pipe 13 penetrates through the steel flange 12 and extends out of the frequency converter case, the heat pipe 13 functions to efficiently conduct heat conducted from the IGBT power element 6 to the heat dissipation substrate 11 into the fan housing 5 outside the frequency converter case, the IGBT power element 6 serves as a heating unit for rectification and inversion in the working process of the frequency converter 7, and the IGBT power element 6 serves as a core control element in the working process of the frequency converter 7, and must ensure normal operation thereof. The losses of the IGBT power element 6 comprise conduction loss and switching loss, and because the heat loss value is huge, the heat source area is small, and the heat productivity of the power element in unit volume is large, a special heat dissipation system is required to be equipped for heat dissipation;
the heat conduction module 1 is used for communicating the inside and the outside of the explosion-proof frequency converter box body, the box body is sealed and isolated from the inside and the outside according to the requirement of the explosion-proof frequency converter box body, and the box body cannot directly perform heat dissipation work in the box body, so that the IGBT power element 6 is arranged on the heat dissipation substrate 11 and matched with the heat pipe 13 arranged at the back of the heat dissipation substrate 11 to extend out of the explosion-proof frequency converter box body for heat conduction, and the steel flange 12 is of a structure for ensuring the explosion-proof performance of the explosion-proof box body;
in this embodiment, the heat pipes 13 are arranged obliquely upward, and it can be known from newton's law of cooling that the heat dissipation surface area and the convective heat transfer coefficient are increased, so that the convective heat transfer amount between the heat sink and the environment can be increased to further improve the heat dissipation effect, and the effective heat dissipation area formed between the obliquely arranged heat pipes 13 and the heat dissipation fins 21 is larger than the effective heat dissipation area formed between the straightly arranged heat pipes and the heat dissipation fins, as shown in fig. 6, in this embodiment, the heat pipes 13 are arranged in a staggered manner, so that the heat dissipation performance of the heat pipes 13 is enhanced;
referring to fig. 4 and 5, in the present embodiment, a groove 111 is formed on the second surface of the heat dissipation substrate 11, the heat pipe 13 includes an evaporation section 131 and a condensation section 132, the evaporation section 131 and the condensation section 132 are L-shaped, and the evaporation section 131 is embedded in the groove 111, so as to ensure that the evaporation section of the heat pipe is in sufficient heat conduction contact with the back plate of the heat dissipation substrate, the area of the evaporation section 131 of the heat pipe 13 at the back plate of the heat dissipation substrate 11 completely covers the area formed by the IGBT power components 6 mounted on the front surface of the heat dissipation substrate 11, and the heat conduction area of the heat pipe completely covers the heat source, thereby establishing an excellent heat conduction effect.
The forced air cooling module 2 comprises a heat radiation fin 21 and a fan 22, the heat radiation fin 21 is inserted on the heat pipe 13, and the fan 22 is arranged below the heat radiation fin 21;
the fan 22 cannot be arranged on the surface of the steel flange 12 due to the requirement of explosion suppression and needs to be arranged on the outer side of the rear wall plate 71 of the frequency converter box body, the power of the fan 22 is 115w, the diameter of a fan blade is 250mm, and the air volume is 980 CFM; the thickness of the radiating fins 21 is 0.8mm, the interval is 5mm, and the radiating fins are divided into two groups which are respectively connected with two groups of adjacent heat pipes 13 in series to form 70 radiating fin arrays, namely a convective heat exchange area of 370mm 204mm 445mm is constructed; the fan 22 performs forced air cooling heat dissipation by forming a heat dissipation area with the heat pipe 13 and the heat dissipation fins 21 to perform forced convection.
The flow guide module 3 is arranged right below the radiating fins 21, the air inlet end of the flow guide module 3 is connected with the air outlet of the fan 22, the air outlet end of the flow guide module 3 is connected with the bottom ends of the radiating fins 21, and the flow guide module 3 is used for adjusting the wind direction;
the heat dissipation area formed by the heat dissipation fins 21 is a cuboid area, the length, width and height of the heat dissipation area are 370mm 204mm 445mm, if the fan 22 is horizontally placed right below the convection heat transfer area to directly dissipate heat, the larger the diameter of the blades of the fan 22 is, the larger the area of the fan 22 in the cuboid heat dissipation area is, the stronger the cooling effect is, but the more the fan 22 exposed outside the cuboid area is, the part of cooling airflow cannot perform heat dissipation work with the heat dissipation area formed by the heat dissipation fins 21, and great waste is caused; if a plurality of fans 22 are adopted for heat dissipation together, firstly, the fault points of the explosion-proof frequency converter box body are increased, a large amount of maintenance cost is increased, in addition, under the heat dissipation condition of the plurality of fans 22, the radius of the fan blades needs to be reduced, the air volume can be greatly influenced, and the heat dissipation effect can be greatly reduced; therefore, in the embodiment, the guide module 3 is adopted to assist the fan 22 to optimize the air channel, so that the cooling air flow is more efficiently contacted with the heat dissipation system, and the heat dissipation effect of the heat dissipation system is improved;
referring to fig. 7 to 9, in the present embodiment, the width direction and the length direction of the mounting surface of the heat dissipation substrate 11 are defined as an X direction and a Y direction, respectively, the direction perpendicular to the mounting surface of the heat dissipation substrate 11 is defined as a Z direction, the fan 22 is mounted in the X direction, the fan 22 is flush with the right side surface of the heat dissipation fin 21 and rotates around the X direction, the flow guiding module 3 includes three air conditioning flow guiding plates, the bottom surface of the heat dissipation fin 21 and the outer side surface of the rear wall plate 71 of the inverter box body enclose a flow guiding space with an open surface, the open surface is opposite to the air outlet of the fan 22, the cooling steam output by the fan 22 enters the flow guiding space, and the air flow is forced to convect upwards with the heat dissipation fin 21 for heat dissipation;
as a preferable example of this embodiment, the whole wind deflector that is disposed opposite to the fan 22 is defined as a first whole wind deflector that is disposed obliquely along the X direction, one end close to the fan 22 is lower than the end farther from the fan 22, and the center of the first whole wind deflector corresponds to the center of the fan 22; as a preferred example of the present embodiment, an included angle Φ between the first rectification flow guide plate and the bottom surface of the heat dissipation fin 21 is 35 ° or 45 ° or 55 ° or 65 °, when the cooling airflow provided by the fan 22 encounters the flow guide module 3, the cooling airflow is optimized from a cylinder-like shape to a rectangular cooling airflow, the direction of the cooling airflow changes, the airflow is forced to convect with the heat dissipation fin 21, the included angle Φ between the flow guide plate at the air inlet end and the bottom surface of the heat dissipation fin 21 is a variable, the flow guide slope of the cooling airflow is changed, the effective wind receiving area of the cooling airflow, the heat dissipation fin 21 and the heat pipe 13 is increased, and the heat dissipation effect is enhanced;
the single chip microcomputer control module 4 comprises a temperature sensor and a control chip (not shown in the figure), the temperature sensor is used for collecting the temperature value of the radiating substrate 11, the signal input end of the control chip is connected with the temperature sensor, the temperature sensor transmits the collected temperature value into the control chip, the signal output end of the control chip is connected with the fan 22, the control chip compares the temperature value collected by the temperature sensor with a preset value in the control chip, and then the fan 22 is controlled to be started and closed;
in this embodiment, the model of the temperature sensor is DS18B20 temperature sensor, the resistance value of the DS18B20 temperature sensor changes according to the temperature change, and the temperature sensor is attached to the first surface of the heat dissipation substrate 11 to sensitively detect the temperature change, the model of the control chip is LPC1768 for receiving the temperature value data collected by the temperature sensor and comparing the received temperature value data with the internal preset temperature value, as shown in fig. 11 and 12, when the temperature value collected by the temperature sensor is lower than the preset value, the fan 22 is not turned on, and when the temperature value collected by the temperature sensor is higher than the preset value, the control chip controls the fan to be turned on.
The heat dissipation system of the mining explosion-proof frequency converter box provided by the embodiment comprises a heat conduction module 1, a forced air cooling module 2, a flow guide module 3 and a single-chip microcomputer control module 4, wherein the flow guide module 3 is arranged under a heat dissipation fin 21, the air inlet end of the flow guide module 3 is connected with the air outlet of a fan 22, the air outlet end of the flow guide module 3 is connected with the bottom end of the heat dissipation fin 21, the flow guide module 3 is used for adjusting the wind direction, the guide module 3 is matched with the fan 22 to optimize cooling airflow fluid, so that the direction of the cooling airflow is changed, the airflow upwards forces convection with the radiating fins, the heat transfer and guide effect is optimized, the heat conduction is efficiently carried out on the heat of the power element under the condition of meeting the explosion-proof performance, the danger of potential safety hazards caused by the fact that underground equipment is out of control is reduced, the safety of underground operation is improved, and the intelligent temperature detection is realized to control the starting of the fan.
Example two
Referring to fig. 13 to 15, the present embodiment provides a heat dissipation system for a mining flameproof frequency converter box, including a heat conduction module 1, a forced air cooling module 2, a flow guide module 3, and a single-chip microcomputer control module 4, where the difference between the present embodiment and the heat dissipation system for a mining flameproof frequency converter box provided in the first embodiment is the installation position of a fan 22 and the structure of the flow guide module 3, so the same mechanisms as those in the first embodiment will not be described in detail, and the installation position of the fan 22 and the structure of the flow guide module 3 are mainly described;
the width direction and the length direction of the mounting surface of the heat dissipating substrate 11 are defined as the X direction and the Y direction, respectively, the direction perpendicular to the mounting surface of the heat dissipating substrate 11 is defined as the Z direction,
in this embodiment, the fan 22 is installed in the Y direction and rotates around the Y direction, the flow guide module 3 includes three air guide plates, the bottom surfaces of the heat dissipation fins 21 and the outer side surface of the rear wall plate 71 of the frequency converter box body enclose a flow guide space with an open surface, the open surface is opposite to the air outlet of the fan 22, the flow guide module 3 is fixed on the fan housing 5, the bottom height of the flow guide module 3 is equal to the height of the fan 22, the cooling steam output by the fan 22 enters the flow guide space, and the air flow flows upwards and the heat dissipation fins 21 perform forced convection to dissipate heat;
as a preferred example of this embodiment, two rectification air deflectors symmetrically disposed along the X direction are respectively defined as a first rectification air deflector and a second rectification air deflector, and the first rectification air deflector and the second rectification air deflector are both disposed obliquely along the X direction, as a preferred example of this embodiment, an included angle Ψ between the first rectification air deflector and the YZ plane is 12 ° or 6 ° or 0 °, a cooling airflow provided by the fan 22 meets the flow guide module 3, the flow guide plates optimize the flow restriction of the air duct, the cooling airflow originally far away from the heat dissipation area formed by the heat pipe 13 and the heat dissipation fins 21 continues to be forced to convect with the heat dissipation fins 21, the included angle Ψ between the first rectification air deflector and the YZ plane is a variable, the flow guide slope thereof is changed, the effective wind receiving area of the cooling airflow, the heat dissipation fins 21 and the heat pipe 13 is increased, and the heat dissipation effect is enhanced.
EXAMPLE III
Referring to fig. 16 to 18, the embodiment provides a heat dissipation system of a mining flameproof frequency converter box, which includes a heat conduction module 1, a forced air cooling module 2, a flow guide module 3, and a single-chip microcomputer control module 4, and the difference between the embodiment and the heat dissipation system of the mining flameproof frequency converter box provided in the first embodiment is the installation position of a fan 22 and the structure of the flow guide module 3, so the same mechanisms as those in the first embodiment will not be described in detail, and the installation position of the fan 22 and the structure of the flow guide module 3 are mainly described;
defining the width direction and the length direction of the mounting surface of the heat dissipation substrate 11 as an X direction and a Y direction, respectively, and defining the direction perpendicular to the mounting surface of the heat dissipation substrate 11 as a Z direction;
in this embodiment, the fan 22 is installed in the Z direction, the fan 22 is flush with the outermost side of the heat dissipation fins 21 and rotates around the Z direction, the flow guide module 3 includes three air guide plates, a flow guide space with an open surface is enclosed by the three air guide plates and the bottom surfaces of the heat dissipation fins 21, the open surface is opposite to the air outlet of the fan 22, the cooling steam output by the fan 22 enters the flow guide space, and the air flow flows upward and performs forced convection with the heat dissipation fins 21 to dissipate heat;
as a preferable example of this embodiment, the rectification guide plate disposed opposite to the fan 22 is defined as a first rectification guide plate, and an included angle between the first rectification guide plate and the bottom surface of the heat dissipation fin 21
The angle is 52 degrees or 62 degrees or 72 degrees, the cooling airflow provided by the fan 22 meets the flow guide module 3, the cooling airflow is optimized from a cylinder-like shape to be cuboid cooling airflow, the direction of the cooling airflow is changed, the airflow is forced to convect upwards with the radiating fins 21, and the included angle between the air inlet end guide plate and the bottom surfaces of the radiating fins 21
The flow guide slope is changed for variable, the length of the bottom plate for sealing the airflow is changed, the effective wind receiving area of the cooling airflow, the heat dissipation fins 21 and the heat pipe 13 is increased, and the heat dissipation effect is enhanced.
Example four
Referring to fig. 19 to 21, the present embodiment provides a heat dissipation system for a mining flameproof frequency converter box, including a heat conduction module 1, a forced air cooling module 2, a flow guide module 3, and a single-chip microcomputer control module 4, where the difference between the present embodiment and the heat dissipation system for a mining flameproof frequency converter box provided in the first embodiment is the installation position of a fan 22 and the structure of the flow guide module 3, so the same mechanisms as those in the first embodiment will not be described in detail, and the installation position of the fan 22 and the structure of the flow guide module 3 are mainly described;
defining the width direction and the length direction of the mounting surface of the heat dissipation substrate 11 as an X direction and a Y direction, respectively, and defining the direction perpendicular to the mounting surface of the heat dissipation substrate 11 as a Z direction;
in this embodiment, the fan 22 is installed in the Z direction and rotates around the Z direction, the flow guiding module 3 includes four wind-shaping flow guiding plates, the four wind-shaping flow guiding plates and the bottom surface of the heat dissipating fins 21 enclose a flow guiding space with an open surface, two wind-shaping flow guiding plates symmetrically disposed along the X direction are respectively defined as a first wind-shaping flow guiding plate and a second wind-shaping flow guiding plate, the first air-conditioning flow guide plate and the second air-conditioning flow guide plate are obliquely arranged along the X direction, the opening surface is opposite to the air outlet of the fan 22, the air-conditioning flow guide plate which is arranged right opposite to the fan 22 is defined as a third air-conditioning flow guide plate, the third air-conditioning flow guide plate is obliquely arranged along the Z direction, one end close to the fan 22 is lower than the other end far from the fan 22, the flow guide space forms a funnel-like shape with a large upper part and a small lower part, cooling steam flow output by the fan 22 enters the flow guide space, and the air flow upwards carries out heat dissipation with the forced convection of the heat dissipation fins 21;
in this embodiment, the distance between the air inlet end point and the far air end point of the first wind shaping guide plate and the second wind shaping guide plate in the X direction is 55mm, and the included angle between the third wind shaping guide plate and the bottom surface of the heat dissipation fin 21
The angle is 52 degrees or 62 degrees or 72 degrees, the air inlet end of the diversion module 3 is limited by constructing a funnel-shaped diversion module, the turbulent flow phenomenon is eliminated, and the included angle between the diversion inclined plate and the bottom surface of the radiating fin 21
The diversion slope of the diversion guide plate is changed for variable, the length of the bottom plate of the closed airflow is changed, the effective wind receiving area of the cooling airflow, the heat dissipation fins 21 and the heat pipes 13 is increased by the air-conditioning diversion plate, the cooling airflow enters the diversion module 3 for diversion work, and the heat dissipation effect is further enhanced.
EXAMPLE five
Referring to fig. 22, based on the same inventive concept, the embodiment provides a mining explosion-proof type frequency converter box, which includes a frequency converter 7 and a heat dissipation system described in any one of the first to fifth embodiments.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, it is still within the scope of the present invention if they fall within the scope of the claims of the present invention and their equivalents.
Claims (15)
1. A heat dissipation system of a mining explosion-proof frequency converter box is characterized by comprising a heat conduction module, a forced air cooling module, a flow guide module and a single-chip microcomputer control module;
the heat conduction module comprises a heat dissipation substrate, a steel flange and a plurality of heat pipes, wherein the heat dissipation substrate comprises a first surface and a second surface which are opposite, an IGBT power element is installed on the first surface of the heat dissipation substrate through heat conduction silicone grease, the steel flange is fixedly installed on one side of the second surface of the heat dissipation substrate, one surface, far away from the heat dissipation substrate, of the steel flange is fixedly installed on the inner side of a rear wall plate of the frequency converter box body, the steel flange and the rear wall plate of the frequency converter box body form an explosion-proof joint surface, one ends of the heat pipes are fixedly installed on the second surface of the heat dissipation substrate, and the other ends of the heat pipes penetrate through the steel flange and extend out of the frequency converter box body;
the forced air cooling module comprises heat dissipation fins and a fan, the heat dissipation fins are inserted into the heat pipes, and the fan is arranged on the outer side of the rear wall plate of the frequency converter box body and is positioned below the heat dissipation fins;
the flow guide module is arranged right below the radiating fins, the air inlet end of the flow guide module is connected with the air outlet of the fan, the air outlet end of the flow guide module is connected with the bottom ends of the radiating fins, and the flow guide module is used for adjusting the wind direction;
the single chip microcomputer control module comprises a temperature sensor and a control chip, the temperature sensor is used for collecting temperature values of the radiating substrate, a signal input end of the control chip is connected with the temperature sensor, the temperature sensor transmits the collected temperature values to the inside of the control chip, a signal output end of the control chip is connected with the fan, the control chip compares the temperature values collected by the temperature sensor with an internal preset value of the control chip, and then the fan is controlled to be started and closed.
2. The heat dissipation system of the mining explosion-proof frequency converter box according to claim 1, wherein the width direction and the length direction of the mounting surface of the heat dissipation substrate are respectively defined as an X direction and a Y direction, the direction perpendicular to the mounting surface of the heat dissipation substrate is defined as a Z direction, the fan is mounted in the X direction and rotates around the X direction, the flow guide module comprises three air-conditioning flow guide plates, a flow guide space with an open surface is defined by the three air-conditioning flow guide plates, the bottom surface of the heat dissipation fin and the outer side surface of the rear wall plate of the frequency converter box body, the open surface is opposite to the air outlet of the fan, cooling steam output by the fan enters the flow guide space, and the air flow upwards dissipates heat by forced convection with the heat dissipation fin.
3. The heat dissipation system of the mining explosion-proof frequency converter box according to claim 2, wherein a whole air guide plate arranged right opposite to the fan is defined as a first whole air guide plate, the first whole air guide plate is obliquely arranged along the X direction, and one end close to the fan is lower than one end far away from the fan.
4. The heat dissipation system of the mining flameproof frequency converter box according to claim 3, wherein an included angle Φ between the first rectification guide plate and the bottom surface of the heat dissipation fin is 35 ° or 45 ° or 55 ° or 65 °.
5. The heat dissipation system of the mining explosion-proof frequency converter box according to claim 1, wherein the width direction and the length direction of the mounting surface of the heat dissipation substrate are respectively defined as an X direction and a Y direction, the direction perpendicular to the mounting surface of the heat dissipation substrate is defined as a Z direction, the fan is mounted in the Y direction and rotates around the Y direction, the flow guide module comprises three air-conditioning flow guide plates, a flow guide space with an open surface is defined by the three air-conditioning flow guide plates, the bottom surface of the heat dissipation fin and the outer side surface of the rear wall plate of the frequency converter box body, the open surface is opposite to the air outlet of the fan, cooling steam output by the fan enters the flow guide space, and the air flow is upwards dissipated by forced convection with the heat dissipation fin.
6. The heat dissipation system of the mining explosion-proof frequency converter box according to claim 5, wherein two rectification air deflectors symmetrically arranged along the X direction are respectively defined as a first rectification air deflector and a second rectification air deflector, and the first rectification air deflector and the second rectification air deflector are obliquely arranged along the X direction.
7. The heat dissipation system of the mining flameproof frequency converter box according to claim 6, wherein an included angle Ψ between the first rectification baffle and the YZ plane is 12 degrees, 6 degrees or 0 degrees.
8. The heat dissipation system of the mining explosion-proof frequency converter box according to claim 1, wherein the width direction and the length direction of the mounting surface of the heat dissipation substrate are respectively defined as an X direction and a Y direction, the direction perpendicular to the mounting surface of the heat dissipation substrate is defined as a Z direction, the fan is mounted in the Z direction and rotates around the Z direction, the flow guide module comprises three air-conditioning flow guide plates, a flow guide space with an open surface is defined by the three air-conditioning flow guide plates and the bottom surface of the heat dissipation fin, the open surface is opposite to an air outlet of the fan, cooling steam output by the fan enters the flow guide space, and the air flow is upwards dissipated by forced convection with the heat dissipation fin.
9. The heat dissipation system of the mining explosion-proof frequency converter box according to claim 8, wherein a rectification guide plate disposed opposite to the fan is defined as a first rectification guide plate, and an included angle between the first rectification guide plate and the bottom surface of the heat dissipation fin
At 52 deg. or 62 deg. or 72 deg..
10. The heat dissipation system of the mining flameproof frequency converter box according to claim 1, wherein the width direction and the length direction of the mounting surface of the heat dissipation substrate are respectively defined as an X direction and a Y direction, the direction perpendicular to the mounting surface of the heat dissipation substrate is defined as a Z direction, the fan is mounted in the Z direction and rotates around the Z direction, the flow guide module comprises four air-handling flow guide plates, a flow guide space with an open surface is defined by the four air-handling flow guide plates and the bottom surface of the heat dissipation fin, two air-handling flow guide plates symmetrically disposed along the X direction are respectively defined as a first air-handling flow guide plate and a second air-handling flow guide plate, the first air-handling flow guide plate and the second air-handling flow guide plate are obliquely disposed along the X direction, the open surface is opposite to the air outlet of the fan, and the air-handling flow guide plate disposed opposite to the fan is defined as a third air-handling flow guide plate, the third whole wind guide plate is obliquely arranged along the Z direction and is close to one end of the fan, the one end of the fan is far away from the one end of the fan, the guide space forms a funnel-shaped structure with a large upper part and a small lower part, cooling steam output by the fan enters the guide space, and airflow upwards dissipates heat by forced convection of the heat dissipation fins.
11. The heat dissipation system of the mining flameproof frequency converter box according to claim 10, wherein an included angle between the third rectification flow guide plate and the bottom surface of the heat dissipation fin
At 52 deg. or 62 deg. or 72 deg..
12. The heat dissipation system of the mining flameproof frequency converter box according to claim 1, wherein a groove is formed in the second surface of the heat dissipation substrate, the heat pipe comprises an evaporation section and a condensation section, the evaporation section and the condensation section are L-shaped, and the evaporation section is embedded in the groove.
13. The heat dissipation system of the mining flameproof frequency converter box according to claim 1, wherein the type of the temperature sensor is a DS18B20 temperature sensor.
14. The heat dissipation system of the mining explosion-proof frequency converter box according to claim 1, wherein the type of the control chip is LPC 1768.
15. A mining flame-proof type frequency converter box is characterized by comprising a frequency converter and the heat dissipation system of any one of claims 1 to 14.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110234257.3A CN113163671A (en) | 2021-03-03 | 2021-03-03 | Mining flame-proof type frequency converter box and heat dissipation system thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110234257.3A CN113163671A (en) | 2021-03-03 | 2021-03-03 | Mining flame-proof type frequency converter box and heat dissipation system thereof |
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| CN202110234257.3A Pending CN113163671A (en) | 2021-03-03 | 2021-03-03 | Mining flame-proof type frequency converter box and heat dissipation system thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113937983A (en) * | 2021-10-21 | 2022-01-14 | 滨州学院 | Frequency converter with improved braking performance |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050145366A1 (en) * | 2002-01-30 | 2005-07-07 | David Erel | Heat-sink with large fins-to-air contact area |
| CN202652047U (en) * | 2012-06-07 | 2013-01-02 | 湘煤立达矿山装备股份有限公司 | An intermittent indirect air cooling heat dissipating system used for a mine-used explosion-isolating frequency converter |
| CN203466708U (en) * | 2013-01-15 | 2014-03-05 | 南阳防爆（苏州）特种装备有限公司 | Explosion-proof frequency transformer |
| CN203984846U (en) * | 2014-06-04 | 2014-12-03 | 鞍山鞍明实业有限公司 | A kind of flame-proof type efficient energy-saving heat-pipe radiator |
| CN204030930U (en) * | 2014-08-15 | 2014-12-17 | 平煤神马机械装备集团河南电气有限公司 | A kind of mine explosion-suppression and intrinsic safety type cooling device of frequency converter |
| WO2015058421A1 (en) * | 2013-10-23 | 2015-04-30 | 珠海风合节能科技开发有限公司 | Condenser heat dissipation enhancing device for compression refrigerating machine and control method thereof |
| CN208208468U (en) * | 2018-04-01 | 2018-12-07 | 贵州迈驰电子有限公司 | A kind of intelligent heat dissipation transformer |
| CN210381690U (en) * | 2018-12-29 | 2020-04-21 | 宁乡阳光电气自动化有限公司 | Ventilation and heat dissipation structure of frequency converter control cabinet |
| CN210899918U (en) * | 2019-08-13 | 2020-06-30 | 黑龙江集佳电气设备有限公司 | Mining flame-proof and intrinsic safety type programmable control box |
| CN210951983U (en) * | 2019-09-21 | 2020-07-07 | 张家口冰联制冷设备有限公司 | Double-fin aluminum calandria with high heat conduction efficiency |
-
2021
- 2021-03-03 CN CN202110234257.3A patent/CN113163671A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050145366A1 (en) * | 2002-01-30 | 2005-07-07 | David Erel | Heat-sink with large fins-to-air contact area |
| CN202652047U (en) * | 2012-06-07 | 2013-01-02 | 湘煤立达矿山装备股份有限公司 | An intermittent indirect air cooling heat dissipating system used for a mine-used explosion-isolating frequency converter |
| CN203466708U (en) * | 2013-01-15 | 2014-03-05 | 南阳防爆（苏州）特种装备有限公司 | Explosion-proof frequency transformer |
| WO2015058421A1 (en) * | 2013-10-23 | 2015-04-30 | 珠海风合节能科技开发有限公司 | Condenser heat dissipation enhancing device for compression refrigerating machine and control method thereof |
| CN203984846U (en) * | 2014-06-04 | 2014-12-03 | 鞍山鞍明实业有限公司 | A kind of flame-proof type efficient energy-saving heat-pipe radiator |
| CN204030930U (en) * | 2014-08-15 | 2014-12-17 | 平煤神马机械装备集团河南电气有限公司 | A kind of mine explosion-suppression and intrinsic safety type cooling device of frequency converter |
| CN208208468U (en) * | 2018-04-01 | 2018-12-07 | 贵州迈驰电子有限公司 | A kind of intelligent heat dissipation transformer |
| CN210381690U (en) * | 2018-12-29 | 2020-04-21 | 宁乡阳光电气自动化有限公司 | Ventilation and heat dissipation structure of frequency converter control cabinet |
| CN210899918U (en) * | 2019-08-13 | 2020-06-30 | 黑龙江集佳电气设备有限公司 | Mining flame-proof and intrinsic safety type programmable control box |
| CN210951983U (en) * | 2019-09-21 | 2020-07-07 | 张家口冰联制冷设备有限公司 | Double-fin aluminum calandria with high heat conduction efficiency |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113937983A (en) * | 2021-10-21 | 2022-01-14 | 滨州学院 | Frequency converter with improved braking performance |
| CN113937983B (en) * | 2021-10-21 | 2023-10-10 | 滨州学院 | Frequency converter with improve braking performance |
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