CN215648055U

CN215648055U - Automatic heat sink of car converter

Info

Publication number: CN215648055U
Application number: CN202122496727.1U
Authority: CN
Inventors: 梁士彬
Original assignee: Tianjin Lewei Zhilian Technology Co ltd
Current assignee: Tianjin Lewei Zhilian Technology Co ltd
Priority date: 2021-10-18
Filing date: 2021-10-18
Publication date: 2022-01-25
Anticipated expiration: 2031-10-18

Abstract

The utility model relates to the technical field of automobile frequency converters and discloses an automatic cooling device for an automobile frequency converter, which comprises an installation seat, wherein the top of the installation seat is fixedly provided with the frequency converter, a bimetallic strip is fixedly arranged on one side wall of a heat dissipation groove close to a connecting plate, the center of the other side wall of the heat dissipation groove opposite to the bimetallic strip is fixedly connected with a contact, and the center of an inner cavity of a fan shell is rotatably connected with a cooling fan. Install on the inner wall of radiating groove through the bimetallic strip, temperature risees in the converter, the in-process that hot-air flows to the outside from the radiating groove, make things convenient for the bimetallic strip heat absorption to take place bending deformation to contact department, when the temperature in the converter reaches the certain degree, the middle part and the contact butt of bimetallic strip drive the circuit route at radiator fan place, make radiator fan blow to the exhaust passage that the fan shell was seted up, the reinforcing air current is discharged to the outside, cool down the converter, thereby reach the purpose of automatic cooling.

Description

Automatic heat sink of car converter

Technical Field

The utility model relates to the technical field of automobile frequency converters, in particular to an automatic cooling device for an automobile frequency converter.

Background

The automobile frequency converter is a power control device which applies a frequency conversion technology and a microelectronic technology and controls an alternating current motor by changing the working power supply frequency mode of the motor, so that required power supply voltage is provided for the motor, in addition, the motor can be protected, overcurrent, overvoltage and overload are prevented, and the service life of the motor is prolonged.

Automobile frequency converter can produce a large amount of heats at the during operation, generally dispel the heat through the radiator fan from taking, radiator fan supplies power through same power with automobile frequency converter, when automobile frequency converter begins to operate, radiator fan begins work promptly, however automobile frequency converter just begins the during operation, the heat of production is less, just can reach radiating demand through natural heat dissipation, radiator fan dispels the heat this moment and can cause the waste of electric energy, furthermore, the louvre of automobile frequency converter side is in the state of opening always, get into the dust easily, and the aperture of side louvre is less, clear up its inside dust inconvenient.

The characteristic that the bimetallic strip is bent and deformed towards one side when being heated is utilized, the bimetallic strip is used for controlling the opening and closing of a circuit where the cooling fan is located, when the heat of the automobile frequency converter is high, and the heat dissipation requirement cannot be met through natural heat dissipation, the bending deformation quantity of the bimetallic strip is enough to enable the circuit where the cooling fan is located to be communicated, so that the automobile frequency converter is automatically cooled.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Aiming at the defects of the prior art, the utility model provides an automatic cooling device for an automobile frequency converter, which has the advantages of automatically cooling, automatically controlling the opening and closing of side radiating holes to prevent dust from entering and the like, and solves the problems that a radiating fan cannot be automatically opened according to the temperature, and the side radiating holes of the automobile frequency converter are always opened to allow dust to easily enter.

(II) technical scheme

In order to realize the purposes of automatically cooling and automatically controlling the opening and closing of the side radiating holes to prevent dust from entering, the utility model provides the following technical scheme: an automatic cooling device of an automobile frequency converter comprises a mounting seat, wherein the top of the mounting seat is fixedly provided with a frequency converter, the front side and the back side of the frequency converter are fixedly connected with heat dissipation shells, one side of the heat dissipation shell, which is far away from the frequency converter, is fixedly provided with a fan shell, one side of the fan shell, which is far away from the heat dissipation shell, is provided with an exhaust passage, the left side and the right side of the heat dissipation shell are respectively provided with an air inlet pipe, the inner wall of the air inlet pipe is connected with an insertion pipe in a sliding manner, one end of the insertion pipe, which is positioned at the outer side of the air inlet pipe, is fixedly connected with a sleeve, the joint of the insertion pipe and the sleeve is fixedly connected with a filter plate, one end of the insertion pipe, which is positioned at the inner side of the air inlet pipe, is fixedly connected with an L-shaped rod, the upper side and the lower side of the middle part of the insertion pipe are both provided with through holes, the inner wall of the heat dissipation shell, which is close to one side of the frequency converter, is provided with a heat dissipation groove, the heat dissipation groove is provided with a bimetallic strip on one side wall close to the connecting plate, the heat dissipation groove is fixedly connected with a contact at the center of the other side wall opposite to the bimetallic strip, and the center of the inner cavity of the fan shell is rotatably connected with a heat dissipation fan.

Preferably, the bimetal, the contact and the heat dissipation fan are connected in series in the same circuit.

Preferably, a sealing rubber ring is arranged at the joint of the outer end opening of the air inlet pipe and the insertion pipe.

Preferably, one end of the sleeve close to the intubation tube is provided with a cylindrical installation cavity, the filter sheet is arranged in the cylindrical installation cavity, the inner diameter of the cylindrical installation cavity is larger than that of the intubation tube, and the inner diameter of one end of the sleeve far away from the intubation tube is smaller than that of the intubation tube.

Preferably, the outer diameter of the sleeve is larger than the inner diameter of the inlet pipe.

Preferably, the heat dissipation groove communicates with the heat dissipation housing and the inner cavity of the frequency converter, and two ends of the bimetallic strip are fixed on the side wall of the heat dissipation groove and extend to the inner cavity of the frequency converter.

Preferably, the inner cavity of the fan housing is communicated with the inner cavity of the heat dissipation housing.

Preferably, one end of the L-shaped rod, which is far away from the connecting plate, is fixedly connected with the bimetallic strip.

(III) advantageous effects

Compared with the prior art, the utility model provides an automatic cooling device for an automobile frequency converter, which has the following beneficial effects:

1. the automatic cooling device for the automobile frequency converter is arranged on the inner wall of the heat dissipation groove through the bimetallic strip, when the temperature in the frequency converter rises and hot air flows outwards from the heat dissipation groove, the bimetallic strip can conveniently absorb heat and bend and deform towards the contact, when the temperature in the frequency converter reaches a certain degree, the middle part of the bimetallic strip is abutted against the contact to drive a circuit path where a cooling fan is located, so that the cooling fan blows air to an exhaust channel formed in a fan shell, the enhanced air flow is discharged outwards, and the frequency converter is cooled, so that the purpose of automatic cooling is achieved;

2. when the bimetallic strip is bent and deformed towards the contact, the L-shaped rod and the connecting plate are pulled to move towards the contact to drive the through hole and the air inlet pipe to be staggered at the opening end of the heat dissipation shell, so that the insertion pipe is communicated with the inner cavity of the heat dissipation shell through the through hole, external air can conveniently enter the inner cavity of the heat dissipation shell through the sleeve, the filter plate, the air inlet pipe and the through hole, the effect of automatically communicating the inner cavity of the heat dissipation shell with the insertion pipe when the frequency converter is subjected to heat dissipation is achieved, the filter plate filters the air entering the inner cavity of the heat dissipation shell from the outside, the effect of preventing dust from entering the inner cavities of the insertion pipe and the heat dissipation shell is achieved, the dust is prevented from being accumulated in the insertion pipe and inconvenient to clean, in addition, when the connecting plate moves towards the contact, the air entering the heat dissipation shell from the outside through the insertion pipe is prevented from being directly discharged from the fan shell and the exhaust passage, make outside air that gets into just can discharge after mixing with the hot-air in the heat dissipation shell earlier, have better radiating effect than current car converter heat abstractor, in addition, through the effect that blocks of two connecting plates, guarantee with the just right radiating groove of radiator fan to the airflow of outside discharge hot-air, further guarantee the radiating effect.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic front sectional view of the present invention;

fig. 4 is an enlarged detail view of the structure of the present invention at a in fig. 3.

In the figure: 1. a mounting seat; 2. a frequency converter; 3. a heat dissipation housing; 4. a fan housing; 5. an exhaust passage; 6. an air inlet pipe; 7. inserting a tube; 8. a sleeve; 9. a filter disc; 10. a connecting plate; 11. an L-shaped rod; 12. a through hole; 13. a heat sink; 14. a bimetal; 15. a contact; 16. a heat dissipation fan.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Please refer to fig. 1-4, an automatic cooling device for a vehicle frequency converter, which comprises a mounting base 1, a frequency converter 2 is fixedly mounted at the top of the mounting base 1, a heat dissipation casing 3 is fixedly connected to the front side and the rear side of the frequency converter 2, a fan casing 4 is fixedly mounted on one side of the heat dissipation casing 3 far away from the frequency converter 2, an inner cavity of the fan casing 4 is communicated with an inner cavity of the heat dissipation casing 3, an exhaust passage 5 is arranged on one side of the fan casing 4 far away from the heat dissipation casing 3, an air inlet pipe 6 is arranged on the left side and the right side of the heat dissipation casing 3, an insertion pipe 7 is slidably connected to the inner wall of the air inlet pipe 6, the air inlet pipe 6 and the insertion pipe 7 are coupled with each other, and a sealing rubber ring is arranged at the joint of the outer end opening of the air inlet pipe 6 and the insertion pipe 7.

A sleeve 8 is fixedly connected at one end of the cannula 7 positioned at the outer side of the air inlet pipe 6, a filter 9 is fixedly connected at the joint of the cannula 7 and the sleeve 8, a cylindrical mounting cavity is arranged at one end of the sleeve 8 close to the cannula 7, the filter 9 is arranged in the cylindrical mounting cavity, the filter 9 plays a role in filtering outside air entering the cannula 7, the inner diameter of the cylindrical mounting cavity is larger than that of the cannula 7, the inner diameter of one end of the sleeve 8 far away from the cannula 7 is smaller than that of the cannula 7, the outer diameter of the sleeve 8 is larger than that of the air inlet pipe 6, the moving distance of the cannula 7 to the inner cavity of the heat dissipation shell 3 along the inner wall of the air inlet pipe 6 is limited, when the sleeve 8 is abutted against the outer end of the air inlet pipe 6, the cannula 7 stops moving to the inner cavity of the heat dissipation shell 3, a connecting plate 10 is fixedly connected at one end of the cannula 7 positioned at the inner side of the air inlet pipe 6, and the connecting plate 10 is a thin sheet made of metal, the connecting plate 10 blocks an opening at one end of the insertion pipe 7, which is positioned at the air inlet pipe 6, the connecting plate 10 abuts against the inner walls of the front side and the rear side of the heat dissipation shell 3, and a gap for air flowing is reserved between the upper side and the lower side of the connecting plate 10 and the inner walls of the upper side and the lower side of the heat dissipation shell 3.

An L-shaped rod 11 is fixedly connected to one side of the connecting plate 10 far away from the insertion tube 7, through holes 12 are formed in the upper side and the lower side of the middle of the insertion tube 7, in a normal state, the whole through hole 12 is located inside the air inlet pipe 6, a heat dissipation groove 13 is formed in the inner wall of one side, close to the frequency converter 2, of the heat dissipation shell 3, a bimetallic strip 14 is fixedly installed on one side wall, close to the connecting plate 10, of the heat dissipation groove 13, when the bimetallic strip 14 absorbs heat, bending deformation occurs to a contact 15, the heat dissipation groove 13 is communicated with the inner cavities of the heat dissipation shell 3 and the frequency converter 2, two ends of the bimetallic strip 14 are fixed to the side wall of the heat dissipation groove 13 and extend to the inner cavity of the frequency converter 2, one end, far away from the connecting plate 10, of the L-shaped rod 11 is fixedly connected with the bimetallic strip 14, a contact 15 is fixedly connected to the center of the other side wall, opposite to the bimetallic strip 13 and the bimetallic strip 14, a heat dissipation fan 16 is rotatably connected to the center of the inner cavity of the fan shell 4, and the bimetallic strip 14, The contact 15 and the heat dissipation fan 16 are connected in series in the same circuit.

The working principle is as follows: when the automobile frequency converter of the frequency converter 2 starts to work, less heat is generated, hot air in the cavity of the frequency converter 2 enters the heat dissipation shell 3 through the heat dissipation groove 13 and is exhausted into the air through the exhaust channel 5 started by the fan shell 4, the through hole 12 is positioned in the air inlet pipe 6 at the moment, the air inlet pipe 6 is not communicated with the intubation tube 7, an assembly body of the sleeve 8 and the cavity of the heat dissipation shell 3, and the hot air in the frequency converter 2 cannot be exhausted from the air inlet pipe 6 to the outside;

when the heat inside the frequency converter 2 cannot meet the heat dissipation requirement through natural heat dissipation, at this time, the bimetallic strip 14 mounted on the inner wall of the heat dissipation groove 13 is bent and deformed under the heating of hot air passing through the heat dissipation groove 13, and at this time, the midpoint of the bimetallic strip 14 abuts against the contact 15, so that a circuit where the heat dissipation fan 16 is located is communicated, the heat dissipation fan 16 is provided with a working port to blow air to the exhaust passage 5, and the hot air inside the frequency converter 2 and the heat dissipation shell 3 is driven to be exhausted from the exhaust passage 5 to the outside;

in the process that the bimetallic strip 14 absorbs heat and is bent and deformed, the bimetallic strip 14 pulls the L-shaped rod 11 to move towards the contact 15, the connecting plate 10 is driven to move simultaneously, the through hole 12 formed in the surface of the insertion tube 7 and the opening of the air inlet pipe 6 in the radiating shell 3 are staggered, the inner cavity of the insertion tube 7 is communicated with the inner cavity of the radiating shell 3 through the through hole 12, external air conveniently enters the radiating shell 3 from the sleeve 8 and the insertion tube 7 to be supplemented when the radiating fan 16 blows air to the outside, and the filter 9 filters the air entering the sleeve 8 and the insertion tube 7 from the outside to prevent dust from entering the radiating shell;

when 14 pulling L shape poles 11 and connecting plate 10 at bimetallic strip move to contact 15, connecting plate 10 can block the outside air that intubate 7 carried to the heat dissipation shell 3 inner chamber, when preventing that outside air from getting into in the heat dissipation shell 3, directly get into in the fan shell 4 rethread exhaust passage 5 discharges, make things convenient for the outside air that gets into to mix with the inside hot-air of heat dissipation shell 3, in addition, under the mating action of the connecting plate 10 of the left and right sides, reduce the airflow that the outside blew off under radiator fan 16 drives in the both sides air about radiator groove 13 inner chamber, guarantee the just right radiator groove 13 exhaust airflow with radiator fan 16.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "secured" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integral to; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The standard parts used by the utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the description of the attached drawings.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an automatic heat sink of automobile frequency converter, includes mount pad (1), its characterized in that: the frequency converter is characterized in that a frequency converter (2) is fixedly mounted at the top of the mounting seat (1), heat dissipation shells (3) are fixedly connected to the front side and the rear side of the frequency converter (2), a fan shell (4) is fixedly mounted on one side, far away from the frequency converter (2), of the heat dissipation shell (3), an exhaust passage (5) is formed in one side, far away from the heat dissipation shell (3), of the fan shell (4), air inlet pipes (6) are formed in the left side and the right side of the heat dissipation shell (3), insertion pipes (7) are slidably connected to the inner wall of the air inlet pipes (6), sleeves (8) are fixedly connected to one ends, located outside the air inlet pipes (6), of the insertion pipes (7), of the connection portions of the insertion pipes (7) and the sleeves (8) are fixedly connected with filter sheets (9), one ends, located inside the air inlet pipes (6), of the insertion pipes (7) are fixedly connected with connecting plates (10), and L-shaped rods (11) are fixedly connected to one side, far away from the insertion pipes (7), of the connecting plates (10), through-hole (12) have all been seted up to downside on the middle part of intubate (7), radiating groove (13) have been seted up to heat dissipation shell (3) near converter (2) one side inner wall, a lateral wall fixed mounting that radiating groove (13) are close to connecting plate (10) has bimetallic strip (14), fixedly connected with contact (15) are located at another lateral wall center that radiating groove (13) and bimetallic strip (14) are relative, fan housing (4) inner chamber center department rotates and is connected with radiator fan (16).

2. The automatic cooling device of the automobile frequency converter according to claim 1, characterized in that: the bimetallic strip (14), the contact (15) and the heat dissipation fan (16) are connected in series in the same circuit.

3. The automatic cooling device of the automobile frequency converter according to claim 1, characterized in that: and a sealing rubber ring is arranged at the joint of the outer end opening of the air inlet pipe (6) and the insertion pipe (7).

4. The automatic cooling device of the automobile frequency converter according to claim 1, characterized in that: one end of the sleeve (8) close to the insertion pipe (7) is provided with a cylindrical installation cavity, the filter disc (9) is arranged in the cylindrical installation cavity, the inner diameter of the cylindrical installation cavity is larger than that of the insertion pipe (7), and the inner diameter of one end, far away from the insertion pipe (7), of the sleeve (8) is smaller than that of the insertion pipe (7).

5. The automatic cooling device of the automobile frequency converter according to claim 1, characterized in that: the outer diameter of the sleeve (8) is larger than the inner diameter of the air inlet pipe (6).

6. The automatic cooling device of the automobile frequency converter according to claim 1, characterized in that: the heat dissipation groove (13) is communicated with the inner cavities of the heat dissipation shell (3) and the frequency converter (2), and two ends of the bimetallic strip (14) are fixed on the side wall of the heat dissipation groove (13) and extend to the inner cavity of the frequency converter (2).

7. The automatic cooling device of the automobile frequency converter according to claim 1, characterized in that: the inner cavity of the fan shell (4) is communicated with the inner cavity of the heat dissipation shell (3).

8. The automatic cooling device of the automobile frequency converter according to claim 1, characterized in that: one end of the L-shaped rod (11) far away from the connecting plate (10) is fixedly connected with a bimetallic strip (14).