CN113573560A

CN113573560A - Resistor self-cooling heat dissipation device for electrical equipment

Info

Publication number: CN113573560A
Application number: CN202111125539.6A
Authority: CN
Inventors: 杨海林
Original assignee: Nantong Hongjinbei Electronic Technology Co ltd
Current assignee: Nantong Hongjinbei Textile Technology Co ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2021-10-29
Anticipated expiration: 2041-09-26
Also published as: CN113573560B

Abstract

The invention provides a resistor self-cooling heat dissipation device based on electrical equipment, relates to the technical field of resistor heat dissipation, and aims to solve the problems that a passive heat dissipation mode causes lower heat dissipation efficiency and is difficult to meet the current use situation of a resistor with higher density, so that the resistor is easy to generate heat and collect heat, a heat dissipation fan of an electrical appliance is also a part of heat output, and the design difficulty of the heat dissipation fan is higher due to smaller volume of the resistor; two heat conduction chassis which are symmetrical left and right are fixedly arranged on the bottom plane of the resistor main body; four buffer seats are respectively and fixedly arranged downwards on the resistor main body at the annular edge of the heat-conducting chassis. The Y-shaped heat dissipation forks are arranged at the tail ends of the heat dissipation forks on the heat transfer disc, the heat dissipation forks are distributed in a spiral annular shape, the heat transfer disc can transfer and diffuse heat at the upper resistor main body downwards, and the heat dissipation forks are arranged at the tail ends and are of a fork-shaped structure, so that the contact area between the heat dissipation forks and air below can be increased, and the heat dissipation efficiency is improved.

Description

Resistor self-cooling heat dissipation device for electrical equipment

Technical Field

The invention relates to the technical field of resistor heat dissipation, in particular to a resistor self-cooling heat dissipation device for electrical equipment.

Background

In the use process of electrical equipment, a large-capacity resistor is usually connected in series at the neutral point of a transformer in order to effectively inhibit the influence of direct-current magnetic bias, and meanwhile, the heat output of the resistor is greatly increased, sparks are easily generated, and the service life of the resistor is influenced.

An existing resistor heat sink, such as one of the large capacity resistor ventilated heat sinks of patent application No. cn201210438549.x, includes; a resistor box body: the bottom of the box body is provided with an air inlet, the upper part of the side surface is provided with an air outlet, and the inner box wall is provided with a fixing groove for fixing a heat dissipation plate; heat dissipation plate: the heat dissipation plate is horizontally stacked on a fixed groove arranged in the resistor box body, and heat dissipation holes are formed in the heat dissipation plate; a resistor: the resistors are arranged on the upper part of the uppermost radiating plate, the lower part of the lowermost radiating plate and among the radiating plates and are sequentially connected through connecting wires. Compared with the prior art, the invention is applied to the neutral point resistor of the transformer, can effectively improve the fault through-current capacity of the neutral point resistor of the transformer, limits the single-phase fault current of the transformer and protects the main transformer from damage. In addition, the neutral point resistor has the function of inhibiting direct current magnetic biasing, and vibration increase, noise increase and loss increase of the transformer caused by magnetic biasing are prevented.

Because the resistor volume is less, adopt the passive form heat abstractor like in above-mentioned patent usually, and passive form radiating mode leads to the radiating efficiency lower, is difficult to satisfy the higher resistor user state of use of density, causes its easy thermal-arrest that generates heat, and active radiating mode need install electrical apparatus heat dissipation fan additional etc. and electrical apparatus heat dissipation fan itself also is partly of heat output, and the volume of resistor is less in addition, causes the design degree of difficulty of heat dissipation fan also higher.

In view of the above, research and improvement are made on the conventional structure and defects, and a self-cooling heat dissipation device for resistors of electrical equipment is provided to achieve the purpose of higher practical value.

Disclosure of Invention

In order to solve the technical problems, the invention provides a resistor self-cooling heat dissipation device for electrical equipment, which is used for solving the problems that a passive heat dissipation mode is low in heat dissipation efficiency and difficult to meet the current situation of resistor use with high density, so that the resistor is easy to heat and collect heat, an active heat dissipation mode needs to be additionally provided with an electrical heat dissipation fan and the like, the electrical heat dissipation fan is also a part of heat output, and the design difficulty of the heat dissipation fan is high due to the small volume of the resistor.

The invention is based on the purpose and the efficacy of a resistor self-cooling heat dissipation device for electrical equipment, and is achieved by the following specific technical means:

a resistor self-cooling heat dissipation device for electrical equipment comprises a resistor main body; two heat conduction chassis which are symmetrical left and right are fixedly arranged on the bottom plane of the resistor main body; four buffer seats are respectively and fixedly arranged on the resistor main body at the annular edge of the heat-conducting chassis downwards; a base is arranged below the heat conduction chassis, and supporting clamping seats are fixedly arranged at positions corresponding to the buffer seats on the annular edge of the base respectively; the heat dissipation shaft is transversely and rotatably arranged at the lower position of the buffer seat; the heat-conducting chassis comprises a heat-conducting disc and a heat-radiating fork, the lower end of the heat-conducting chassis is a heat-conducting disc, the middle of the heat-conducting disc is of a hollow structure, and the outer wall of the heat-conducting disc is provided with heat-radiating fins distributed annularly; the tail end of the heat dissipation fork on the heat transfer plate is provided with a Y-shaped heat dissipation fork which is distributed in a spiral annular shape.

Furthermore, the buffer seat comprises a heat dissipation mounting block, a buffer rod and a buffer spring, the middle part of the lower end of the buffer seat is provided with the heat dissipation mounting block which faces downwards vertically, the left end and the right end of the heat dissipation mounting block are provided with heat dissipation fins, and the heat dissipation shaft is vertically and rotatably mounted on the heat dissipation mounting block; two buffer rods are respectively and fixedly arranged on the lower end surface of the heat dissipation mounting block vertically downwards, and the lower ends of the buffer rods penetrate through the supporting clamping seats below the buffer rods in a sliding manner; and a buffer spring is sleeved on the buffer rod above the support clamping seat.

Furthermore, the support clamping seat comprises a directional sleeve, and the directional sleeve is vertically installed at a position, corresponding to the cam disc, on the upper end surface of the support clamping seat.

Further, the base comprises a low-temperature heat-conducting body and a heat-conducting ball, the middle part of the base is an upwards-convex cone-shaped low-temperature heat-conducting body, the heat-conducting ball is fixedly arranged at the tip end of the low-temperature heat-conducting body and is positioned in the middle cavity of the heat transfer disc, the base is made of silver metal, the heat-conducting chassis is made of copper metal, the heat dissipation shaft comprises an outer heat dissipation fan and an inner air supply fan, the outer end of the heat dissipation shaft is fixedly provided with the outer heat dissipation fan, the inner end of the heat dissipation shaft is fixedly provided with the inner air supply fan, one end of the heat dissipation shaft close to the heat conduction chassis is the inner end, the size of the outer heat dissipation fan is equal to or more than that of the inner air supply fan, the cam disc comprises a cam arm and an orientation block, the cam arm is rotatably arranged at the lower end of the cam disc through a pin shaft, the orientation block is rotatably connected to the other end of the cam arm through a pin shaft, and the orientation block is vertically and slidably arranged in an inner cavity of the orientation sleeve.

Compared with the prior art, the invention has the following beneficial effects:

1. the Y-shaped heat dissipation forks are arranged at the tail ends of the heat dissipation forks on the heat transfer disc, the heat dissipation forks are distributed in a spiral annular shape, the heat transfer disc can transfer and diffuse heat at the upper resistor main body downwards, and the heat dissipation forks are arranged at the tail ends and are of a fork-shaped structure, so that the contact area between the heat dissipation forks and air below can be increased, and the heat dissipation efficiency is improved.

2. When the electric equipment runs, the buffer rod can reciprocate up and down along with the vibration generated by the electric equipment under the combined action of the buffer rod and the buffer spring, so that the heat dissipation shaft can be driven to rotate through the cam disc to perform heat dissipation treatment, and the self-cooling heat dissipation treatment is realized by means of the vibration generated by the running of the machine.

3. The heat conducting ball is arranged in the middle cavity of the heat transfer disc, the base is made of silver metal, the heat conducting chassis is made of copper metal, the low-temperature heat conducting body is in contact with electrical equipment below the resistor main body, the temperature of the electrical equipment is lower than that of one end of the resistor main body, dynamic transmission of heat transfer from a high-temperature end to a low-temperature end can be formed, the base end is always the end with fast heat dissipation and strong heat fluidity by virtue of the difference of heat conduction performance of the silver metal and the copper metal, the heat conducting ball is arranged in the middle cavity of the heat transfer disc, more heat can be conducted through the spherical surface and is diffused and guided to the low-temperature heat conducting body below through the pointed cone end, a state of differential heat dynamic flow is formed all the time, and efficient heat dissipation is facilitated.

4. When the heat dissipation shaft rotates, the air flow can be driven to flow by the outer heat dissipation fan and the inner air supply fan, and the size of the outer heat dissipation fan is larger than that of the inner air supply fan.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a front right upper axial view of the present invention.

Fig. 2 is a schematic diagram of the right front lower axial view structure of the invention.

Fig. 3 is a schematic front view of the present invention.

Fig. 4 is a schematic bottom view of the present invention.

Fig. 5 is an axial view of the resistor body of the present invention in a removed state.

Fig. 6 is a partial axial view of the buffer seat and the support chuck of the present invention.

FIG. 7 is an axial view of the structure of the cushion socket and the support socket of the present invention in a half-sectioned state of the orientation sleeve.

Fig. 8 is an axial view of the thermally conductive chassis and base portion of the present invention.

Fig. 9 is a schematic partial axial view of the thermally conductive chassis according to the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a resistor body; 2. a heat conducting chassis; 201. a heat transfer plate; 202. a heat dissipation fork; 3. a buffer seat; 301. a heat dissipation mounting block; 302. a buffer rod; 303. a buffer spring; 4. supporting the card holder; 401. an orienting sleeve; 5. a base; 501. a low temperature heat conductor; 502. a heat-conducting ball; 6. a heat-dissipating shaft; 601. an external heat dissipation fan; 602. an internal air supply fan; 7. a cam plate; 701. a cam arm; 702. and (5) orienting the blocks.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in figures 1 to 9:

the invention provides a resistor self-cooling heat dissipation device based on electrical equipment, which comprises a resistor main body 1; two heat conduction chassis 2 which are symmetrical left and right are fixedly arranged on the bottom plane of the resistor main body 1; four buffer seats 3 are respectively and fixedly arranged downwards on the resistor main body 1 at the annular edge of the heat conduction chassis 2; a base 5 is arranged below the heat conduction chassis 2, and supporting clamping seats 4 are respectively and fixedly arranged at positions on the annular edge of the base 5 corresponding to the buffer seats 3; the heat dissipation shaft 6 is transversely and rotatably arranged at the lower position of the buffer seat 3; as shown in fig. 6 and 7, the heat dissipating shaft 6 includes an outer heat dissipating fan 601 and an inner air supplying fan 602, the outer end of the heat dissipating shaft 6 is fixedly mounted with the outer heat dissipating fan 601, the inner end of the heat dissipating shaft 6 is fixedly mounted with the inner air supplying fan 602, the end of the heat dissipating shaft 6 close to the heat conducting chassis 2 is the inner end, the size of the outer heat dissipating fan 601 is 1.2 times of the size of the inner air supplying fan 602, when the heat dissipating shaft 6 rotates, the outer heat dissipating fan 601 and the inner air supplying fan 602 can drive the airflow to flow, and the size of the outer heat dissipating fan 601 is larger than the size of the inner air supplying fan 602.

As shown in fig. 8 and 9, the heat conducting base plate 2 includes a heat conducting plate 201 and a heat dissipating fork 202, the lower end of the heat conducting base plate 2 is the heat conducting plate 201, the middle of the heat conducting plate 201 is a hollow structure, and the outer wall of the heat conducting plate 201 is provided with heat dissipating fins distributed annularly; the tail end of the heat dissipation fork 202 on the heat transfer disc 201 is provided with the Y-shaped heat dissipation fork 202, the heat dissipation fork 202 is distributed in a spiral annular shape, the heat transfer disc 201 can transfer and diffuse heat at the resistor main body 1 above downwards, the heat dissipation fork 202 is arranged at the tail end and is of a fork structure, the contact area of the heat dissipation fork and air below can be increased, and the heat dissipation efficiency is improved.

As shown in fig. 6 and 7, the buffer base 3 includes a heat dissipation mounting block 301, a buffer rod 302 and a buffer spring 303, the middle of the lower end of the buffer base 3 is the heat dissipation mounting block 301 facing vertically downward, the left and right ends of the heat dissipation mounting block 301 are both provided with heat dissipation fins, and the heat dissipation shaft 6 is vertically rotatably mounted on the heat dissipation mounting block 301; two buffer rods 302 are respectively and vertically and downwards fixedly installed on the lower end surface of the heat dissipation installation block 301, and the lower ends of the buffer rods 302 penetrate through the support clamping seat 4 below in a sliding manner; the buffer rod 302 above the support clamping seat 4 is sleeved with a buffer spring 303, when the electrical equipment runs, the buffer rod 302 can reciprocate up and down along with the vibration generated by the electrical equipment under the combined action of the buffer rod 302 and the buffer spring 303, so that the heat dissipation shaft 6 can be driven to rotate through the cam disc 7 to perform heat dissipation treatment, and self-cooling heat dissipation treatment is realized by means of the vibration generated by the running of the machine.

The support clamping seat 4 comprises a directional sleeve 401, the directional sleeve 401 is vertically installed at a position, corresponding to the cam disc 7, on the upper end face of the support clamping seat 4, the directional sleeve 401 can guide the directional block 702 to move up and down, so that the cam disc 7 can form reciprocating swinging motion, the heat dissipation shaft 6 is driven to rotate, hot air inside the heat dissipation shaft is led out, air flow is formed, and the heat dissipation efficiency is improved.

As shown in fig. 5, the base 5 includes a low temperature heat conducting body 501 and a heat conducting ball 502, the middle of the base 5 is a convex cone-shaped low temperature heat conducting body 501, the tip of the low temperature heat conducting body 501 is fixedly installed with the heat conducting ball 502, the heat conducting ball 502 is located in the middle cavity of the heat transfer plate 201, the base 5 is made of silver metal, the heat conducting base 2 is made of copper metal, the low temperature heat conducting body 501 is in contact with the electrical equipment below the resistor main body 1, the temperature of the electrical equipment is lower than that of one end of the resistor main body 1, dynamic transmission of heat transmission from the high temperature end to the low temperature end can be formed, and by means of the difference of heat conductivity between the silver metal and the copper metal, the base 5 end is always the one end with fast heat dissipation and strong heat fluidity, the heat conducting ball 502 is built in the middle cavity of the heat transfer plate 201, more heat can be conducted through the spherical surface to be diffused and guided to the lower low temperature heat conducting body 501 through the tip, the state of differential heat dynamic flow is always formed, and high-efficiency heat dissipation is facilitated.

The cam disc 7 comprises a cam arm 701 and an orientation block 702, the cam arm 701 is rotatably mounted at the lower end of the cam disc 7 through a pin shaft, the other end of the cam arm 701 is rotatably connected with the orientation block 702 through the pin shaft, the orientation block 702 is vertically and slidably arranged in the inner cavity of the orientation sleeve 401, when the electric equipment vibrates during operation, the cam arm 701 and the orientation block 702 move up and down along with the orientation sleeve 401 through the up-and-down reciprocating movement of the buffer rod 301 and the buffer spring 302, and the cam disc 7 can rotate to drive the heat dissipation shaft 6 to rotate so as to achieve the effect of guiding airflow.

The specific use mode and function of the embodiment are as follows:

in use, the resistor body 1 is mounted on an electrical apparatus, and when the electrical apparatus is operated, with the micro-vibration generated from the electrical apparatus, meanwhile, under the combined action of the buffer rod 302 and the buffer spring 303, the buffer rod 302 will reciprocate up and down, when the electric equipment vibrates during operation, by the up-and-down reciprocating movement of the buffer rod 301 and the buffer spring 302, the cam arm 701 and the orientation block 702 move up and down in the orientation sleeve 401, the cam plate 7 can rotate, the heat dissipation shaft 6 is driven to rotate, so that the heat dissipating shaft 6 can be rotated by the cam plate 7, and when the heat dissipating shaft 6 is rotated, the air flow can be induced by the external heat dissipating fan 601 and the internal blowing fan 602, and the size of the external heat dissipating fan 601 is larger than that of the internal blowing fan 602, because the inner air supply fan 602 is close to the cam plate 7, when the cam plate 7 drives the heat dissipation shaft 6, the outer heat dissipation fan 601 far away from one end of the cam plate 7 can generate larger inertia when rotating;

in the process, the lower end of the heat conduction chassis 2 is provided with a heat transfer disc 201, the middle part of the heat transfer disc 201 is of a hollow structure, and the outer wall of the heat transfer disc 201 is provided with heat dissipation fins distributed annularly; the tail end of the heat dissipation fork 202 on the heat transfer disc 201 is provided with the Y-shaped heat dissipation fork 202, the heat dissipation fork 202 is distributed in a spiral ring shape, the heat transfer disc 201 can transfer and diffuse heat at the upper resistor main body 1 downwards, the heat transfer ball 502 is positioned in a middle cavity of the heat transfer disc 201, the base 5 is made of silver metal, the heat conduction chassis 2 is made of copper metal, the low-temperature heat transfer body 501 is contacted with electrical equipment below the resistor main body 1, the temperature of the electrical equipment is lower than that of one end of the resistor main body 1, dynamic transfer of heat transfer from a high-temperature end to a low-temperature end can be formed, and by means of the difference of heat conductivity of the silver metal and the copper metal, the base 5 end is always one end with fast heat dissipation and strong heat fluidity, the heat transfer ball 502 is arranged in the middle cavity of the heat transfer disc 201, more heat can be transferred by the spherical surface and is diffused and guided to the low-temperature heat transfer body 501 below through the pointed cone end, the state of differential heat dynamic flow is always formed.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A resistor self-cooling heat dissipation device based on electrical equipment is characterized in that: the resistor self-cooling heat dissipation device comprises:

a resistor body (1); two heat conduction chassis (2) which are symmetrical left and right are fixedly arranged on the bottom plane of the resistor main body (1); four buffer seats (3) are respectively and fixedly installed downwards on a resistor main body (1) at the annular edge of the heat conduction chassis (2), each buffer seat (3) comprises a heat dissipation installation block (301), a buffer rod (302) and a buffer spring (303), the middle of the lower end of each buffer seat (3) is provided with the heat dissipation installation block (301) which vertically faces downwards, the left end and the right end of each heat dissipation installation block (301) are respectively provided with heat dissipation fins, and a heat dissipation shaft (6) is vertically and rotatably installed on the heat dissipation installation blocks (301); two buffer rods (302) are respectively and fixedly installed on the lower end face of the heat dissipation installation block (301) vertically downwards, and the lower ends of the buffer rods (302) penetrate through the lower support clamping seat (4) in a sliding manner; a buffer spring (303) is sleeved on the buffer rod (302) above the support clamping seat (4); a base (5) is arranged below the heat conduction chassis (2), supporting clamping seats (4) are fixedly arranged at positions corresponding to the buffer seat (3) on the annular edge of the base (5) respectively, each supporting clamping seat (4) comprises an orientation sleeve (401), and the orientation sleeve (401) is vertically arranged at a position corresponding to the cam disc (7) on the upper end surface of each supporting clamping seat (4);

the heat dissipation shaft (6), the heat dissipation shaft (6) is transversely and rotatably arranged at the lower position of the buffer seat (3);

the heat dissipation device comprises a cam disc (7), wherein the cam disc (7) is fixedly connected with the middle part of a heat dissipation shaft (6) close to the rear part, the cam disc (7) comprises a cam arm (701) and an orientation block (702), the cam arm (701) is rotatably installed at the lower end of the cam disc (7) through a pin shaft, the other end of the cam arm (701) is rotatably connected with the orientation block (702) through the pin shaft, and the orientation block (702) is vertically and slidably arranged in an inner cavity of an orientation sleeve (401).

2. The self-cooling heat sink for resistors of electric equipment as claimed in claim 1, wherein: the heat conduction chassis (2) is provided with a heat transfer plate (201), the lower end of the heat conduction chassis (2) is provided with the heat transfer plate (201), the middle part of the heat transfer plate (201) is of a hollow structure, and the outer wall of the heat transfer plate (201) is provided with heat dissipation fins distributed annularly.

3. The self-cooling heat sink for resistors of electric equipment as claimed in claim 2, wherein: the heat conduction chassis (2) is further provided with a heat dissipation fork (202), the tail end of the heat dissipation fork (202) on the heat conduction disc (201) is provided with a Y-shaped heat dissipation fork (202), and the heat dissipation fork (202) is distributed in a spiral annular shape.

4. The self-cooling heat sink for resistors of electric equipment as claimed in claim 1, wherein: including low temperature heat-conducting body (501) and heat-conducting ball (502) on base (5), the middle part of base (5) is the toper low temperature heat-conducting body (501) of epirelief, and the tip department fixed mounting of low temperature heat-conducting body (501) has heat-conducting ball (502).

5. The self-cooling heat sink for resistors of electric equipment as claimed in claim 4, wherein: the heat conducting ball (502) is positioned in a cavity in the middle of the heat transfer plate (201), the base (5) is made of silver metal, and the heat conducting base plate (2) is made of copper metal.

6. The self-cooling heat sink for resistors of electric equipment as claimed in claim 1, wherein: the heat dissipation shaft (6) is provided with an outer heat dissipation fan (601) and an inner air supply fan (602), the outer end of the heat dissipation shaft (6) is fixedly provided with the outer heat dissipation fan (601), and the inner end of the heat dissipation shaft (6) is fixedly provided with the inner air supply fan (602).

7. The self-cooling heat sink for resistors of electric equipment as claimed in claim 6, wherein: one end of the heat dissipation shaft (6) close to the heat conduction chassis (2) is an inner end, and the size of the outer heat dissipation fan (601) is 1.2 times that of the inner air supply fan (602).