CN111430186B - an AC contactor - Google Patents

Abstract

The invention relates to the technical field of electrical equipment, and discloses an AC contactor, comprising a contactor housing, and a cooling mechanism is provided on the right side of the contactor housing; the cooling mechanism includes a first pipeline, a second pipeline, and a cooling shell body, motor, motor shaft, blowing fan blade, cooling disc, cavity, metal temperature guide plate and metal temperature guide block; the upper and lower ends of the right side of the contactor housing are connected with a first pipe, the first pipe A cooling shell is connected to the right side of the pipeline. In the present invention, the contactor housing and the cooling disc, as well as the metal temperature guide plate and the metal temperature guide block inside the contactor housing are respectively connected through the first pipeline and the second pipeline. And the second pipe, directly exhaust the hot gas inside the contactor shell to the outside, and set up a concave metal heat guide plate and a metal heat guide block inside the contactor shell, which can quickly and large-area contactor shell heat in the shell, and export to the outside.

Description

an AC contactor

technical field

The invention relates to the technical field of electrical equipment, in particular to an AC contactor.

Background technique

AC contactors often use three arc extinguishing methods: double-break electric arc extinguishing, longitudinal seam arc extinguishing and grid arc extinguishing. It is used to eliminate the arc generated by the moving and static contacts during the opening and closing process. The working principle of the AC contactor is to use the electromagnetic force to cooperate with the spring force to realize the making and breaking of the contacts. There are two types of AC contactors. Working state: de-energized state (release state) and electrified state (action state), when the attraction coil is energized, the static iron core generates electromagnetic attraction, the armature is pulled in, and the connecting rod connected to the armature drives the contact to move, so that the When the normally closed contact is broken, the contactor is in the energized state; when the attracting coil is powered off, the electromagnetic suction force disappears, the armature is re-opened, the normally open contact is closed, and is released under the action of the bit spring, all the contacts are reset accordingly, and the contactor It is in a power-off state, and most of the current AC contactors themselves cannot obtain explosion-proof certification, and they will be installed with bolts during installation. However, the safety of the AC contactor requires that the AC contactor needs to be sealed and installed, but because of the A large number of wire connections are used, so there is a problem that it is difficult to seal and install together after assembling and wiring.

Patent No. CN201920582429.4, discloses a sealed installation structure of an AC contactor, including a protective shell, an AC contactor, a protective plate, a shock-absorbing connection block and a heat dissipation device. The protective shell is provided with an AC contactor inside. The upper and lower sides of the front of the protective shell are installed with wire troughs, the front of the wire trough is installed with a cover plate, one end of the wire trough is installed with a sealing rubber ring, and the front of the protective shell is installed with a protective plate through hinges A cooling fin is fixedly installed on one side of the heat dissipation plate, a connecting rod is sleeved inside the fixing sleeve, a mesh plate is installed at one end of the connecting rod, and a fan is fixedly installed on one side of the mesh plate. The sealing rubber ring used in the invention can wrap the wires extending from the inside, thereby increasing the sealing performance of the device, solving the problem that the traditional AC contactor is difficult to seal after assembling and wiring, and at the same time, the sealing installation structure can be used for the AC contactor. Contactors provide an independent working environment.

At present, the existing AC contactors still have some shortcomings. For example, the existing AC contactors have poor cooling effect, cannot directly guide the hot air inside the contactor to the outside, and cannot quickly conduct the temperature to the outside. and active cooling.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an AC contactor, which solves the problems raised in the background art.

In order to achieve the above purpose, the present invention provides the following technical solutions: an AC contactor, comprising a contactor housing, and a cooling mechanism is provided on the right side of the contactor housing;

The cooling mechanism includes a first duct, a second duct, a cooling housing, a motor, a motor shaft, a blower blade, a cooling disc, a cavity, a metal temperature guide plate and a metal temperature guide block; the contactor housing is on the right side. The upper and lower ends of the side are connected with a first pipeline, the right side of the first pipeline is connected with a cooling shell, the right side of the cooling shell is connected with a second pipeline, and the right side of the second pipeline is connected with a cooling disk, The upper and lower ends of the cooling shell are fixedly connected with one end of a fixing rod, the other end of the fixing rod is fixedly connected with a motor, a motor shaft is rotatably connected on the right side of the motor, and a motor shaft is fixedly connected on the right side of the motor shaft. blowing fan blades;

A cavity is opened on the right side of the contactor housing, a metal temperature guide plate is welded inside the cavity, a metal temperature guide block is welded on the right side of the metal temperature guide plate, and the right side of the metal temperature guide block passes through A cooling disc, the inner bottom end of the contactor housing is bolted with a coil.

As a preferred embodiment of the present invention, a semiconductor refrigeration sheet is attached to the middle of the front and rear ends on the right side of the cooling disc, and the cold end of the semiconductor refrigeration sheet is attached to the cooling disc, and the right side of the semiconductor refrigeration sheet is attached. The four corners are fitted with first fixing bolts, and the left side of the first fixing bolts is threadedly connected with a cooling disc through the semiconductor refrigeration chip.

As a preferred embodiment of the present invention, the cooling disk is provided with a first circular hole in a circle, and a second fixing bolt penetrates through the first circular hole, and the upper and lower ends of the cooling disk are on the right side. A second round hole is opened, and the left side of the second round hole is connected with a second pipe.

As a preferred embodiment of the present invention, the upper and lower sides of the contactor housing are respectively fixedly connected with one end of a first fixing block and a second fixing block, and the other ends of the first fixing block and the second fixing block are respectively A first fixing plate and a second fixing plate are welded, and the bottom of the second fixing plate is bolted with a temperature controller.

As a preferred embodiment of the present invention, the signal output end of the temperature controller is connected to the signal input end of the semiconductor refrigeration chip.

As a preferred embodiment of the present invention, a third circular hole is opened in the middle of the cooling disc, and a temperature-conducting copper ring is fixedly connected inside the third circular hole.

As a preferred embodiment of the present invention, the cooling disc, the first pipe, the second pipe, the first fixing block, the second fixing block, the first fixing plate and the second fixing plate are all made of stainless metal.

Compared with the prior art, the beneficial effects of the present invention are as follows:

1. The present invention communicates the contactor housing and the cooling disc, and the metal temperature guide plate and the metal temperature guide block inside the contactor housing through the first pipeline and the second pipeline respectively, not only can the motor in the cooling housing be used, but also through the first and second pipelines. A pipeline and a second pipeline directly discharge the hot gas inside the contactor shell to the outside, and a concave metal heat-conducting plate and a metal heat-conducting block are arranged inside the contactor shell, which can quickly and large-area heat in the contactor shell, And export it to the outside, which is beneficial to use an AC contactor more practically.

2. The present invention uses the semiconductor refrigerating sheet on the cooling disc. When active cooling is required, the semiconductor refrigerating sheet can be used for cooling, and the temperature is conducted through the metal temperature guide block and the metal temperature guide plate. The area of the contactor housing is cooled, which is beneficial to the more practical use of an AC contactor.

3. In the present invention, through the first round hole on the cooling disk, a first round hole is opened in one circle of the cooling disk, and a second fixing bolt is arranged in the first round hole, which can be used in the cooling circle as required. Multiple orientations of the disk pass through the bolts to fix the contactor housing on the wall or other planes, which facilitates the more practical use of an AC contactor.

4. In the present invention, by setting the temperature-conducting copper ring in the cooling disc, and disposing the temperature-conducting copper ring in the third circular hole, not only the speed of conducting the hot gas can be improved, but also the speed of conducting the cold air can be improved, which improves the conduction efficiency. Efficiency is conducive to the more practical use of an AC contactor.

Description of drawings

Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

Fig. 1 is the front view of a kind of AC contactor of the present invention;

2 is an inner view of a cooling shell of an AC contactor according to the present invention;

3 is a cavity view of an AC contactor of the present invention;

FIG. 4 is a view of a cooling shell of an AC contactor according to the present invention.

In the figure: 1, contactor housing 2, coil 3, first pipeline 4, cooling housing 5, second pipeline 6, cooling disc 7, second fixing bolt 8, metal heat conducting block 9, first fixing block 10. The first fixing plate 11, the second fixing block 12, the second fixing plate 13, the temperature controller 14, the fixing rod 15, the motor 16, the motor shaft 17, the blowing fan blade 18, the cavity 19, the metal heat guide plate 20 , the first round hole 21, the second round hole 22, the temperature-conducting copper ring 23, the third round hole 24, the semiconductor refrigeration chip 25, and the first fixing bolt.

Detailed ways

In order to make the technical means, creative features, achievement goals and effects realized by the present invention easy to understand, the present invention will be further described below with reference to the specific embodiments.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inside", " The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, so as to The specific orientation configuration and operation are therefore not to be construed as limitations of the present invention.

In the description of the present invention, it should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "arranged" should be understood in a broad sense, for example, it may be fixedly connected, arranged, or Removably connected and arranged, or integrally connected and arranged. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

1-4, the present invention provides a technical solution: an AC contactor, comprising a contactor housing 1, and a cooling mechanism is provided on the right side of the contactor housing 1;

The cooling mechanism includes a first duct 3, a second duct 5, a cooling casing 4, a motor 15, a motor shaft 16, a blowing fan blade 17, a cooling disc 6, a cavity 18, a metal temperature guide plate 19 and a metal temperature guide plate Block 8; the upper and lower ends on the right side of the contactor housing 1 are connected with a first pipe 3, the right side of the first pipe 3 is connected with a cooling shell 4, and the right side of the cooling shell 4 is connected with a second pipe 3 Pipe 5, the right side of the second pipe 5 is connected with a cooling disc 6, the upper and lower ends of the cooling shell 4 are fixedly connected with one end of a fixing rod 14, and the other end of the fixing rod 14 is fixedly connected with a motor 15. A motor shaft 16 is rotatably connected to the right side of the motor 15, and a blowing fan blade 17 is fixedly connected to the right side of the motor shaft 16;

A cavity 18 is opened on the right side of the contactor housing 1 , a metal temperature guide plate 19 is welded inside the cavity 18 , and a metal temperature guide block 8 is welded on the right side of the metal temperature guide plate 19 . The right side of the temperature block 8 passes through the cooling disc 6 , and the inner bottom end of the contactor housing 1 is bolted with the coil 2 .

In this embodiment, please refer to FIG. 1 , the first pipe 3 and the second pipe 5 are respectively connected to the contactor housing 1 and the cooling disc 6 , as well as the metal heat conducting plate 19 and the metal heat conducting block 8 inside the contactor housing 1 . , not only can the motor 15 in the cooling shell 4 be used to directly discharge the hot gas inside the contactor shell 1 to the outside through the first pipeline 3 and the second pipeline 5, but also a concave metal guide is arranged inside the contactor shell 1. The temperature plate 19 and the metal heat conducting block 8 can quickly and export the heat in the large-area contactor housing 1 to the outside, which is conducive to a more practical use of an AC contactor.

Wherein, the semiconductor refrigeration sheet 24 is attached to the middle of the front and rear ends on the right side of the cooling disc 6, and the cold end of the semiconductor refrigeration sheet 24 is attached to the cooling disc 6, and the four corners of the right side of the semiconductor refrigeration sheet 24 are attached A first fixing bolt 25 is combined, and the left side of the first fixing bolt 25 is screwed with the cooling disc 6 through the semiconductor refrigeration chip 24 .

In this embodiment, please refer to FIG. 1 , through the semiconductor refrigerating sheet 24 on the cooling disc 6 , when the temperature needs to be cooled actively, the semiconductor refrigerating sheet 24 can be used for cooling, passing through the metal temperature guide block 8 and the metal temperature guide plate 19 Conducting temperature, using the concave metal heat conducting plate 19 to cool the contactor housing 1 in a large area is beneficial to more practical use of an AC contactor.

Wherein, a first round hole 20 is formed in the inner circle of the cooling disk 5, and a second fixing bolt 7 is inserted through the first round hole 20, and the upper and lower ends of the right side of the cooling disk 6 are provided with a second fixing bolt 7. Two round holes 21, the left side of the second round hole 21 is connected with the second pipe 5.

In this embodiment, please refer to FIG. 1 , through the first circular hole 20 on the cooling disk 6 , a first circular hole 20 is opened in one circle of the cooling disk 6 , and a second circular hole 20 is arranged in the first circular hole 20 . The fixing bolts 7 can be passed through the bolts in multiple directions of the cooling disc 6 as required to fix the contactor housing 1 on a wall or other plane, which is conducive to more practical use of an AC contactor.

Wherein, the upper and lower sides of the contactor housing 1 are fixedly connected with one end of the first fixing block 9 and the second fixing block 11 respectively, and the other ends of the first fixing block 9 and the second fixing block 11 are respectively welded with the first fixing block 9 and the second fixing block 11. A fixing plate 10 and a second fixing plate 12, the bottom of the second fixing plate 12 is bolted with a temperature controller 13.

Wherein, the signal output end of the temperature controller 13 is connected to the signal input end of the semiconductor refrigeration chip 24 .

Wherein, a third circular hole 23 is formed in the middle of the cooling disk 6 , and a temperature-conducting copper ring 22 is fixedly connected to the inside of the third circular hole 23 .

In this embodiment, please refer to FIG. 1 , by disposing the temperature-conducting copper ring 22 in the cooling disc 6 and disposing the heat-conducting copper ring 22 in the third circular hole 23 , not only the speed of conducting the heat gas can be improved, but also the The speed of conduction of cold air improves the efficiency of conduction, which is conducive to the more practical use of an AC contactor.

The cooling disc 6 , the first pipe 3 , the second pipe 5 , the first fixing block 9 , the second fixing block 11 , the first fixing plate 10 and the second fixing plate 12 are all made of stainless metal.

The model of the semiconductor refrigeration sheet 24 in the present invention is TEC1-12706.

When an AC contactor is used, the motor 15, the refrigerating chip 24 and the temperature controller 13 are first electrically connected to the external power source, and then the motor 15, the refrigerating chip 24 and the temperature controller 13 are connected to the external control switch signal After the connection is completed, when it is necessary to cool down the contactor housing 1, the motor 15 can be turned on, the motor 15 drives the motor shaft 16, the motor shaft 16 drives the blower blade 17, and the blower blade 17 is used to cool the contactor housing 1. The hot air is discharged through the first pipe 3 and the second pipe 5. At the same time, the concave metal heat guide plate 19 and the metal heat guide block 8 can use the large area of the metal heat guide plate 19 to conduct the temperature in the contactor housing 1. It is conducted to the outside through the metal heat conducting block 8. When it is necessary to actively cool the interior of the contactor housing 1, the semiconductor refrigeration sheet 24 can be opened. When active cooling is required, the semiconductor refrigeration sheet 24 can be used for cooling. The metal heat-conducting block 8 and the metal heat-conducting plate 19 conduct temperature, and the concave metal heat-conducting plate 19 is used to cool the contactor housing in a large area. The ring 22 is arranged in the third circular hole 23, which can not only improve the speed of conducting hot air, but also increase the speed of conducting cold air, and improve the efficiency of conduction. One circle of the disc 6 is provided with a first circular hole 20, and a second fixing bolt 7 is arranged in the first circular hole 20, which can be passed through the bolts in multiple directions of the cooling disc 6 as required, and the contactor The housing 1 is fixed on a wall or other plane.

While the basic principles and main features and advantages of the present invention have been shown and described above, it will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but without departing from the spirit or essential aspects of the present invention. In the case of the characteristic features, the present invention can be implemented in other specific forms. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is to be defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the claims. All changes within the meaning and scope of the equivalents of , are included in the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (7)

1. An AC contactor, comprising a contactor housing (1), characterized in that: a cooling mechanism is provided on the right side of the contactor housing (1); The cooling mechanism comprises a first duct (3), a second duct (5), a cooling casing (4), a motor (15), a motor shaft (16), a blowing fan blade (17), and a cooling disc (6) , a cavity (18), a metal temperature guide plate (19) and a metal temperature guide block (8); the upper and lower ends of the right side of the contactor housing (1) are connected with a first pipe (3), the first pipe (3) A cooling shell (4) is connected to the right side of a pipeline (3), a second pipeline (5) is connected to the right side of the cooling shell (4), and a cooling disk is connected to the right side of the second pipeline (5). (6), the upper and lower ends of the cooling shell (4) are fixedly connected with one end of a fixing rod (14), and the other end of the fixing rod (14) is fixedly connected with a motor (15), and the motor ( 15) A motor shaft (16) is rotatably connected to the right side, and a blower fan blade (17) is fixedly connected to the right side of the motor shaft (16); A cavity (18) is opened on the right side of the contactor housing (1), a metal temperature guide plate (19) is welded inside the cavity (18), and a metal heat guide plate (19) is welded on the right side. A metal temperature guide block (8), the right side of the metal temperature guide block (8) passes through the cooling disk (6), and the inner bottom end of the contactor housing (1) is bolted with a coil (2). 2. An AC contactor according to claim 1, characterized in that: the middle of the front and rear ends of the right side of the cooling disc (6) is attached with a semiconductor refrigeration sheet (24), and the semiconductor refrigeration sheet (24) ) and the cooling disc (6), the right four corners of the semiconductor refrigeration sheet (24) are fitted with first fixing bolts (25), and the left side of the first fixing bolts (25) passes through The semiconductor refrigeration sheet (24) is screwed with a cooling disc (6). 3. A kind of AC contactor according to claim 1, is characterized in that: the inside of described cooling disc (6) is provided with the first round hole (20) all round, and the inside of the first round hole (20) A second fixing bolt (7) runs through the cooling disc (6), a second round hole (21) is opened at the upper and lower ends of the right side of the cooling disc (6), and a second pipe is connected to the left side of the second round hole (21). (5). 4. An AC contactor according to claim 1, characterized in that: a first fixing block (9) and a second fixing block (11) are respectively fixedly connected to the upper and lower sides of the contactor housing (1) one end of the first fixing block (9) and the other end of the second fixing block (11) are respectively welded with a first fixing plate (10) and a second fixing plate (12), the second fixing plate (12) ) The bottom is bolted with a temperature controller (13). 5 . The AC contactor according to claim 4 , wherein the signal output end of the temperature controller ( 13 ) is connected to the signal input end of the semiconductor refrigeration chip ( 24 ). 6 . 6 . The AC contactor according to claim 1 , wherein a third round hole ( 23 ) is opened in the middle of the cooling disc ( 6 ), and the third round hole ( 23 ) is fixed inside. 7 . A temperature-conducting copper ring (22) is connected. 7. An AC contactor according to claim 1, characterized in that: the cooling disc (6), the first pipe (3), the second pipe (5), the first fixing block (9), The second fixing block (11), the first fixing plate (10) and the second fixing plate (12) are all made of stainless metal.

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