Heat dissipation device applied to frequency converter

Abstract

The utility model provides a heat radiation device applied to a frequency converter. The heat radiation device comprises a housing, a metal plate seat, a power heating device, a heat radiator, a fan and a fan cover. The metal plate seat is assembled at the bottom of the shell, the radiator is arranged in the shell, the power heating device is connected with the radiator, a preset distance is kept between the shell and fins of the radiator, an air duct cavity is formed in the shell, an air inlet is formed in one end of the shell, an air outlet is formed in the other end of the shell, and the fan is arranged at the air outlet of the shell through the fan cover; a large-size open groove is formed in the side face of the shell, the metal plate base is provided with a side plate, the side plate is matched with the open groove, the radiator is provided with a side base plate, the side plate of the metal plate base extends inwards to form an extending part, and the extending part is attached to the side base plate. According to the utility model, the heat dissipation effect of the frequency converter is obviously improved, so that the heat dissipation device can be smaller and can better meet the requirements of customers.

Description

TECHNICAL FIELD

[0001] The utility model relates to frequency converter heat dissipation technical field, especially a kind of heat dissipation device applied to frequency converter. BACKGROUND

[0002] With the rapid development of industrial automation and electronic technology, as the core equipment of power control field, the stability and reliability of the performance of frequency converter are more and more valued. However, the high integration of today's electronic devices brings more and more concentrated heat, at the same time, to meet the needs of customer space saving of frequency converter, the product miniaturization trend is more and more prominent, these factors will inevitably contradict with the heat dissipation needs of frequency converter itself, bring challenges to the stability and reliability of frequency converter, as one of the key technologies to ensure the long-term efficient operation of frequency converter, air duct heat dissipation is becoming an important core point of industry research and breakthrough.

[0003] The heat dissipation air duct device of frequency converter in prior art mainly includes: power heating device, shell, fan, fan cover, radiator, sheet metal bottom plate. Its installation mode is: first, the radiator is fixed on the shell by screw; second, the power heating device is fixed on the surface of the upper base plate of the radiator by screw, and keeps the surface of the upper base plate of the radiator in the state of adhesion; then, the sheet metal bottom plate is assembled on the shell by buckle, and forms a relatively closed cavity space, i.e. air duct cavity, with the shell, and keeps a certain distance with the fins of the radiator; finally, the fan is fixed on the shell by the fan cover. Its heat dissipation mode is: first, the power device generates heat, and the heat is transferred from itself to the base plate of the radiator through the contact surface with the radiator; second, the heat is transferred inside the radiator, and reaches each fin end; third, the fins of the radiator contact the cold air flowing in the air duct cavity through the surface of the fins, and heat exchange is carried out, the cold air is changed into hot air after absorbing heat, and finally the hot air in the air duct cavity is discharged through the fan through the air outlet, so that the heat generated by the heating power device is discharged from the product interior to the external environment.

[0004] The disadvantages of this mode are: the heat dissipation way is single, the heat is mainly dissipated in the form of air cooling heat exchange of the fins of the radiator, and the heat directly dissipated through the shell is less than 5% of the total heat; the effective heat dissipation area is limited by the size of the radiator, and the size of the radiator directly affects the appearance and installation size of the product; the air duct cavity has relatively closed structure design on both sides, so the internal wind resistance and wind pressure are large, which reduces the heat discharge speed. UTILITY MODEL CONTENTS

[0005] The utility model discloses a heat dissipation device for frequency converter, which can improve the heat dissipation effect of the frequency converter.

[0006] To achieve the above object, the utility model provides a kind of heat dissipation device applied to frequency converter, including shell, sheet metal seat, power heating device, radiator, fan and fan cover;The sheet metal seat is assembled at the bottom of the shell, and the radiator is arranged inside the shell, and the power heating device is connected with the radiator, and the fins of the shell and the radiator keep preset distance, and form air duct cavity in the shell, one end of the shell is provided with air inlet, the other end is provided with air outlet, and the fan is arranged in the air outlet of the shell by the fan cover;

[0007] The side of the shell is provided with large-size slot, the sheet metal seat is provided with side plate, the side plate is matched with the slot, the radiator is provided with side base plate, the side plate of the sheet metal seat is provided with extension portion by extending inward, and the extension portion is attached with the side base plate.

[0008] Further, the left and right sides of the radiator are provided with the side base plate, and the left and right sides of the sheet metal seat are provided with the side plate.

[0009] Further, the extension portion and the side base plate are both perforated and fixedly connected by screws.

[0010] Further, the side plate is hollowed out at the position of the extension portion.

[0011] Further, the side plate is provided with air inlet hole.

[0012] Further, the thickness of the side base plate is 3-5 times of the thickness of the fins.

[0013] Further, the shell is made of plastic material, and the sheet metal seat is made of metal material.

[0014] The above scheme of the utility model has the following beneficial effects:

[0015] The heat dissipation device applied to the frequency converter has the advantages that the proportion of the metal material in the air duct cavity composition is adjusted, the rate and energy size of heat passing through the air duct cavity and directly transmitting to the external environment are improved, the assembly relationship is reasonably utilized, the side plate extended from the sheet metal seat is in large-area adhering contact with the side base plate of the radiator, the effective heat dissipation area of heat replacement from the surface of the radiator to the air is increased, the overall design of the air duct cavity is changed from the sealing type to the semi-sealing type, the air inlet position is increased on the side plate of the sheet metal seat, the effective air inlet area is increased, the air resistance of the air duct cavity is reduced, and the heat discharge speed is improved, so that the heat dissipation device can be smaller under the premise of the same heat dissipation requirement, the overall volume of the product is also reduced, the production cost can be obviously reduced, and the demand of customers on installation space saving in the market can be better met.

[0016] Other beneficial effects of the utility model will be described in detail in the subsequent specific embodiment part. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is an overall structure explosion schematic view of the utility model;

[0018] Figure 2 It is an overall structure internal schematic view of the utility model;

[0019] Figure 3 It is an air duct cavity and air flow direction schematic view of the utility model;

[0020] Figure 4 It is a side plate and side base plate connection schematic view of the utility model.

[0021] EXPLANATION OF REFERENCE NUMERALS

[0022] 1 - shell body, 2 - sheet metal seat, 3 - power heat generating device, 4 - radiator, 5 - fan, 6 - fan cover, 7 - air duct cavity, 8 - air inlet, 9 - air outlet, 10 - side plate, 11 - side base plate, 12 - extension part, 13 - air inlet hole. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical schemes and advantages of the utility model more clear, the following will be described in detail in combination with the drawings and specific embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model. In addition, the technical features involved in different embodiments of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0024] In the description of the utility model, it needs to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the indicated device or element must have a particular orientation, construct and operate in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the utility model, it needs to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external" and so on indicate the orientation or position relation based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the indicated device or element must have a particular orientation, construct and operate in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0026] As Figures 1-3 Indicated, the embodiment of the utility model provides a kind of heat sink applied to frequency converter, including shell 1, sheet metal seat 2, power heating device 3, radiator 4, fan 5 and fan cover 6.Wherein, shell 1 and sheet metal seat 2 form the external structure of entire heat sink, sheet metal seat 2 is assembled at shell 1 bottom.Radiator 4 is fixed in shell 1 interior by screw, power heating device 3 is fixed on the upper base plate surface of radiator 4 by screw, and keeps the state of adhering with the upper base plate surface of radiator 4.Wherein, shell 1 and the fin of radiator 4 keep certain distance, and form the air duct cavity 7 with certain space in shell 1 interior.Shell 1 one end is provided with air inlet 8, other end is provided with air outlet 9, fan 5 is fixed at the air outlet 9 of shell 1 by fan cover 6.

[0027] Wherein, the left and right sides of shell 1 are all set to hollow, i.e. are provided with large-size slot.Correspondingly, sheet metal seat 2 is provided with side plate 10, and the edge line of slot is overlapped and adhered with side plate 10, to build internal air duct cavity 7.Meanwhile, two side base plates 11 are additionally provided on the left and right sides of radiator 4, and the side plate 10 of sheet metal seat 2 is further provided with extension part 12, which is overlapped with side base plate 11 and is fixed by screw, as shown in Figure 4 Due to the setting of side plate 10 and extension part 12 (the position of extension part 12 is hollowed in side plate 10), the side of air duct cavity 7 is not completely sealed.In addition, air inlet hole 13 can be further provided on side plate 10, to further improve the air intake of air duct cavity 7.

[0028] It should be noted that the thickness of the side substrate 11 is determined according to the heat to be shared, and is generally 3-5 times the thickness of the fin, so that the heat sink 4 is cooled through the fin and the side substrate 11 at the same time.

[0029] It is worth mentioning that the shell 1 in the prior art is generally made of plastic material, and in the embodiment, the side of the shell 1 made of plastic material is replaced by the side plate 10 of the metal material sheet metal seat 2, which improves the proportion of materials with high thermal conductivity in the composition of the air duct cavity 7, and makes use of the characteristics that the specific heat capacity of metal material is larger than that of plastic material and the thermal conductivity is more excellent, thereby improving the energy size and transmission rate of heat directly transmitted to the external environment through the shell 1. In combination with the thickened side substrate 11 of the heat sink 4, it is beneficial to the outward dispersion of heat. Therefore, under the premise of the same heat dissipation demand, the heat dissipation device can be made smaller, the overall volume of the product is also reduced, the production cost can be obviously reduced, and the demand of customers on the installation space saving in the market can be better met.

[0030] Specifically, when the power heating device 3 operates to generate heat, the heat is transmitted from the power heating device 3 to the upper substrate of the heat sink 4. Then the heat is transmitted inside the heat sink 4 to reach each fin end, and part of the heat is transmitted to the two side substrates 11 and further to the side plate 10 of the sheet metal seat 2. In the transmission process, the heat is gradually dispersed in the entire sheet metal seat 2, part of which is gathered on the outer surface of the sheet metal seat 2 and directly dispersed to the external environment; another part of the heat is gathered on the inner surface of the sheet metal seat 2, and through the operation of the fan 5, cold air enters the air duct cavity 7 from the air inlet 8 and fully contacts the inner surface of the heat sink 4 and the sheet metal seat 2, so that the heat is replaced by the cold air and the heat of the heat sink 4 is transmitted to the air in the air duct cavity 7. Finally, through the fan 5, the hot air in the air duct cavity 7 that has absorbed heat is discharged from the air duct cavity 7 at the air outlet 9 of the other end of the shell 1, so as to achieve the purpose of efficient and reliable heat dissipation.

[0031] When installing the heat dissipation device provided in the embodiment, first, the heat sink 4 is fixed on the shell 1 by screws, then the power heating device 3 is fixed on the surface of the upper substrate of the heat sink 4 by screws, and the surface of the upper substrate of the heat sink 4 is kept in a state of adhesion, and then the sheet metal seat 2 is assembled on the side substrate 11 of the heat sink 4 through the side plate 10, and a semi-closed cavity space, i.e. the air duct cavity 7, is formed with the shell 1, and the buckle of the sheet metal seat 2 is buckled with the shell 1, and finally the fan 5 is fixed on the shell 1 by the fan cover 6.

[0032] In summary, the heat dissipation device applied to the frequency converter provided by the embodiment improves the rate and energy of heat transferred through the air duct cavity 7 and directly to the external environment by adjusting the proportion of metal materials in the air duct cavity 7; the assembly relationship is reasonably utilized, the side plate 10 extended from the sheet metal seat 2 is in contact with the side base plate 11 of the radiator 4 with a large area, and the effective heat dissipation area of heat transferred from the surface of the radiator 4 to the air is increased; the overall design of the air duct cavity 7 is changed from a sealed type to a semi-sealed type, the effective air inlet area is increased through the air inlet position added on the side plate 10 of the sheet metal seat 2, the air resistance of the air duct cavity 7 is reduced, and the heat exhaust speed is improved.

[0033] The technical features of the above embodiments can be combined arbitrarily, and to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present application.

[0034] The above embodiments only express several implementation manners of the present application, the description is more specific and detailed, but it should not be understood as the limitation of the scope of the application. It should be pointed out that for ordinary skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A heat dissipating device applied to a frequency converter, characterized in that, Including shell, sheet metal seat, power heating device, radiator, fan and fan cover; The sheet metal seat is assembled at the bottom of the shell, the radiator is arranged in the shell, the power heating device is connected with the radiator, the shell and the fin of the radiator keep a preset distance, and a wind channel cavity is formed in the shell, one end of the shell is provided with an air inlet, the other end is provided with an air outlet, and the fan is arranged at the air outlet of the shell through the fan cover. The side of the shell is provided with a large-size slot, the sheet metal seat is provided with a side plate, the side plate is matched with the slot, the radiator is provided with a side base plate, and the side plate of the sheet metal seat is provided with an extension part which is inwardly extended, and the extension part is attached to the side base plate.

2. The heat sink for use in a frequency converter according to claim 1, characterized in that The left and right sides of the radiator are provided with the side base plate, and the left and right sides of the sheet metal seat are provided with the side plate.

3. The heat sink for use in a frequency converter according to claim 1, characterized in that, The extension part and the side base plate are both perforated and fixedly connected through screws.

4. The heat sink for use in a frequency converter of claim 1, wherein, The side plate is hollowed out at the position of the extension part.

5. The heat sink for use in a frequency converter of claim 1, wherein, Air inlet holes are formed in the side plate.

6. The heat sink for use in a frequency converter of claim 1, wherein, The thickness of the side base plate is 3-5 times the thickness of the fin.

7. The heat sink of claim 1, wherein the heat sink is applied to a frequency converter. The shell is made of plastic material, and the sheet metal seat is made of metal material.

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