Efficient heat dissipation electromagnetic relay

Abstract

The utility model belongs to the technical field of relays, and particularly relates to an electromagnetic relay with efficient heat dissipation, the electromagnetic relay comprises a shell, an electromagnetic unit, a control unit and a heat dissipation unit, the heat dissipation unit comprises a heat conduction ring, a plurality of heat conduction pipes and a heat dissipation main body, the heat conduction ring wraps an electromagnetic coil, the heat dissipation main body is arranged outside the shell, and the control unit is arranged in the shell. The heat dissipation body is connected with the heat conduction ring through the heat conduction pipe. The electromagnetic relay has good heat dissipation capability, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of relays, and in particular relates to an electromagnetic relay with high-efficiency heat dissipation. Background Art

[0002] An electromagnetic relay is a device that uses the principle of electromagnetic induction to control a circuit. It consists of an electromagnetic coil, an iron core, and contacts. When power is supplied to the electromagnetic coil, a magnetic field is generated to attract the iron core, thereby closing (or opening) the contacts and completing (or interrupting) the on-off action of the circuit. This device is commonly used in power systems to control the switching of current, protect, and control the operation of circuits.

[0003] However, during use, the electromagnetic coil in the relay will continue to heat up, eventually causing damage to the component. Utility Model Content

[0004] The purpose of the utility model is to solve the problem of insufficient heat dissipation effect of the current electromagnetic relay described in the above background technology, and propose a new electromagnetic relay with high efficiency heat dissipation, which has good heat dissipation ability and prevents internal components from being damaged due to heat.

[0005] A technical solution adopted to achieve the above-mentioned purpose is an electromagnetic relay with high efficiency heat dissipation, and the electromagnetic relay with high efficiency heat dissipation comprises:

[0006] case;

[0007] The electromagnetic unit comprises an iron core, an electromagnetic coil and a control pin, the top of the iron core is recessed downward to form a slot, the electromagnetic coil is wound around the outer periphery of the iron core, the control pin passes through the side wall of the shell, and the control pin is electrically connected to the electromagnetic coil;

[0008] A control unit, the control unit comprising a first pin, a second pin, a moving rod, a fixed block, an elastic member and a connecting rod, the fixed block is fixedly connected to the inner wall of the shell, the fixed block is connected to the connecting rod, the connecting rod extends into the slot, the moving rod is slidably connected to the connecting rod, the elastic member connects the fixed block and the moving rod, a first moving contact and a second moving contact are respectively provided at two ends of the moving rod, a first static contact is provided at one end of the first pin, an end of the first pin away from the first static contact passes through the shell, a second static contact is provided at one end of the second pin, and an end of the second pin away from the second static contact passes through the shell;

[0009] The heat dissipation unit comprises a heat-conducting ring, a plurality of heat-conducting pipes, and a heat-dissipating body. The heat-conducting ring covers the electromagnetic coil. The heat-dissipating body is arranged outside the shell and is connected to the heat-conducting ring through the heat-conducting pipes.

[0010] In the above technical solution, the movement of the moving rod in the control unit is controlled by the power on and off of the electromagnetic unit, thereby controlling the switch of the circuit. The heat generated by the electromagnetic coil is absorbed by the heat conductive ring in the heat dissipation unit and transferred to the heat conductive pipe, and then the heat is transferred to the heat dissipation body through the heat conductive pipe for sufficient heat dissipation. The heat dissipation body has the advantages of large heat dissipation area and high heat dissipation efficiency.

[0011] Furthermore, the heat dissipation body includes a plurality of transversely arranged heat conducting plates and a plurality of vertically arranged heat conducting rods, the heat conducting plates are arranged in pairs at intervals, and the heat conducting rods connect the heat conducting plates.

[0012] In the above technical solution, heat is evenly dispersed to various parts of the heat dissipation body for heat dissipation through the horizontally and vertically staggered heat conducting sheets and heat conducting rods. At the same time, the arrangement of multiple layers of heat dissipation sheets increases the heat dissipation area and enhances the heat dissipation effect.

[0013] Furthermore, the heat conducting pipe runs through each heat conducting sheet.

[0014] In the above technical solution, the heat pipe runs through each heat conducting sheet to diffuse the heat to the entire heat dissipation body.

[0015] Furthermore, a heat dissipation coating is provided between the heat conductive ring and the electromagnetic coil.

[0016] In the above technical solution, the heat dissipation coating has high thermal conductivity and can fully transfer the heat of the electromagnetic coil to the thermal conductive ring.

[0017] Furthermore, the first static contact is located directly below the first moving contact, and the second static contact is located directly below the second moving contact.

[0018] Furthermore, a first buffer pad is provided below the moving rod, and a second buffer pad is provided above the iron core, and the first buffer pad and the second buffer pad cooperate with each other.

[0019] In the above technical solution, the first buffer pad and the second buffer pad play a role in preventing vibration, so as to protect the components and increase the service life.

[0020] Furthermore, the heat conducting pipe is connected to the peripheral side wall of the heat conducting ring.

[0021] Furthermore, a protective cover is provided on the outer side of the heat dissipation body, and a plurality of heat dissipation holes are provided on the protective cover.

[0022] In the above technical solution, the protective cover plays a role in protecting the heat dissipation body and increases heat dissipation holes to minimize the influence of the protective cover on heat dissipation.

[0023] Furthermore, the first static contact and the second static contact are located in the same horizontal plane.

[0024] Furthermore, the heat pipe is made of copper.

[0025] The advantages of the utility model are:

[0026] 1. The utility model transfers the heat of the electromagnetic coil to the heat-conducting ring, the heat-conducting ring transfers it to the heat-conducting pipe, and the heat-conducting pipe transfers it to the external heat dissipation body for sufficient heat dissipation. The heat dissipation body greatly enhances the heat dissipation effect through staggered heat-conducting sheets and heat-conducting rods.

[0027] 2. The utility model adds a heat dissipation coating with high thermal conductivity between the heat-conducting ring and the electromagnetic coil, which further enhances the heat transfer and heat dissipation of the electromagnetic coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0029] Figure 1 It is a schematic diagram of the structure of the utility model;

[0030] Figure 2 It is a top view of the heat conducting pipe and the heat conducting ring of the utility model.

[0031] Illustrations: 1. Shell, 2. Electromagnetic unit, 3. Control unit, 4. Heat dissipation unit, 5. First buffer pad, 6. Second buffer pad, 7. Protective cover, 201. Iron core, 202. Electromagnetic coil, 203. Control pin, 301. First pin, 302. Second pin, 303. Moving rod, 304. Fixed block, 305. Elastic member, 306. Connecting rod, 401. Heat-conducting ring, 402. Heat-conducting pipe, 403. Heat dissipation body, 404. Heat-conducting sheet, 405. Heat-conducting rod, 406. Heat dissipation coating. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only embodiments of a part of the present invention rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] like Figure 1 As shown, an electromagnetic relay with efficient heat dissipation is composed of a shell 1, an electromagnetic unit 2, a control unit 3, and a heat dissipation unit 4, wherein the electromagnetic unit 2 is composed of an iron core 201, an electromagnetic coil 202 and a control pin 203, the electromagnetic coil 202 is wound around the outside of the iron core 201, the electromagnetic coil 202 is connected to the control pin 203 through an electric wire, the control pin 203 passes through the right side wall of the shell 1, and the top center of the iron core 201 is recessed downward to form a slot 204.

[0035] The control unit 3 is composed of a first pin 301, a second pin 302, a moving rod 303, a fixed block 304, an elastic member 305 and a connecting rod 306. The fixed block 304 is fixed to the inner wall of the housing 1, and the fixed block 304 is fixedly connected to the connecting rod 306. The connecting rod 306 is inserted into the slot 204. A through groove is provided at the center of the moving rod 303. The moving rod 303 is arranged on the connecting rod 306 through the through groove to realize sliding connection. The moving rod 303 is equivalent to the armature of the prior art. The elastic member 305 connects the fixed block 304 and the moving rod 303 to play the role of pulling up the moving rod 303. The left and right ends of the movable rod 303 are respectively provided with a first movable contact and a second movable contact, the first pin 301 is "U"-shaped, the length of one side of the "U" shape is smaller than the length of the other side, the short end of the first pin 301 is provided with a first static contact, the first static contact is located directly below the first movable contact, the long end of the first pin 301 passes through the shell 1, the second pin 302 is long, the left end of the second pin 302 is provided with a second static contact, the second static contact is located directly below the second movable contact, and the right end of the second pin 302 passes through the shell 1, wherein the short end of the first pin 301 and the second pin 302 are on the same horizontal plane.

[0036] The heat dissipation unit 4 is composed of a heat-conducting ring 401, a plurality of heat-conducting tubes 402, and a heat-dissipating body 403. The heat-conducting ring 401 is in a cylindrical shape and covers the electromagnetic coil 202. A heat-dissipating coating is provided between the heat-conducting ring 401 and the electromagnetic coil 202. The heat-dissipating coating can be made of a high thermal conductivity material such as a graphene coating. The heat-dissipating body 403 is composed of a plurality of transversely arranged heat-conducting sheets 404 and a plurality of vertically arranged heat-conducting rods 405. The heat-conducting sheets 404 are arranged at intervals in pairs, and the heat-conducting rods 405 connect the heat-conducting sheets 404. Figure 2 As shown, in one embodiment, the heat dissipation unit 4 is provided with four copper heat-conducting pipes, one end of the four copper heat-conducting pipes is connected to the side wall of the heat-conducting ring 401, and the other end passes through the shell 1 and all the heat-conducting sheets 404. The heat dissipation body 403 is provided with five layers of heat-conducting sheets 404 and four heat-conducting rods 405. The four heat-conducting rods 405 are arranged on the sides of the five layers of heat-conducting sheets 404.

[0037] In one embodiment, a first buffer pad 5 is provided below the moving rod 303, and a second buffer pad 6 is provided above the iron core 201. The first buffer pad 5 is located directly above the second buffer pad 6 to play a vibration reduction role.

[0038] In one embodiment, a protective cover 7 is provided on the outside of the heat dissipation body 403 , the protective cover is connected to the housing 1 , and heat dissipation holes are evenly provided on the protective cover 7 .

[0039] Working principle of the utility model: when the power is turned off, the pulling force of the elastic member 305 on the moving rod 303 is greater than the gravity of the moving rod 303, the moving rod 303 remains in a suspended state, the first moving contact and the second moving contact on the moving rod 303 do not contact the first static contact and the second static contact, and the first pin 301, the second pin 302 and the moving rod 303 cannot form a passage;

[0040] When the power is turned on, the electromagnetic coil 202 is energized, and the iron core 201 generates a magnetic force. The magnetic force of the iron core 201 on the moving rod 303 plus the gravity of the moving rod 303 is greater than the pulling force of the elastic member 305 on the moving rod 303, and the moving rod 303 moves downward. Finally, the first moving contact and the second moving contact on the moving rod 303 contact with the first static contact and the second static contact, and the first pin 301, the second pin 302 and the moving rod 303 form a passage.

[0041] When the electromagnetic coil 202 is in operation, heat is generated. The heat is absorbed by the heat dissipation coating 406 with high thermal conductivity and conducted to the heat-conducting ring 401. The heat on the heat-conducting ring 401 is conducted to the heat-conducting pipe 402. The heat on the heat-conducting pipe 402 is conducted to the heat dissipation body 403. The heat-conducting pipe 402 is connected to the multi-layer heat-conducting sheet 404. The heat is evenly dispersed to the heat-conducting sheet 404 and the heat-conducting rod 405, and heat is exchanged with the air to play a role in heat dissipation.

[0042] Finally, it should be noted that this embodiment is only used to illustrate the present invention and does not limit the scope of the present invention. In addition, it should be understood that after reading the content of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

Claims

1. An electromagnetic relay with high efficiency heat dissipation, characterized in that: The electromagnetic relay with high efficiency heat dissipation comprises: Housing (1); An electromagnetic unit (2), the electromagnetic unit (2) comprising an iron core (201), an electromagnetic coil (202) and a control pin (203), the top of the iron core (201) being recessed downward to form a slot (204), the electromagnetic coil (202) being wound around the outer periphery of the iron core (201), the control pin (203) penetrating a side wall of the housing (1), and the control pin (203) being electrically connected to the electromagnetic coil (202); A control unit (3), the control unit (3) comprising a first pin (301), a second pin (302), a moving rod (303), a fixed block (304), an elastic member (305) and a connecting rod (306), the fixed block (304) being fixedly connected to the inner wall of the housing (1), the fixed block (304) being connected to the connecting rod (306), the connecting rod (306) extending into the interior of the slot (204), the moving rod (303) being slidably connected to the connecting rod (306), the elastic member (305) connecting the fixed block (304) and the moving rod (303), the moving rod (303) being provided with a first moving contact and a second moving contact at two ends respectively, the first pin (301) being provided with a first static contact at one end, the end of the first pin (301) away from the first static contact passing through the housing (1), the second pin (302) being provided with a second static contact at one end, the end of the second pin (302) away from the second static contact passing through the housing (1); A heat dissipation unit (4), the heat dissipation unit (4) comprising a heat conductive ring (401), a plurality of heat conductive pipes (402), and a heat dissipation body (403), the heat conductive ring (401) covering the electromagnetic coil (202), the heat dissipation body (403) being arranged outside the housing (1), and the heat dissipation body (403) being connected to the heat conductive ring (401) via the heat conductive pipes (402).

2. The electromagnetic relay with high efficiency heat dissipation according to claim 1, characterized in that: The heat dissipation body (403) comprises a plurality of heat-conducting sheets (404) arranged transversely and a plurality of heat-conducting rods (405) arranged vertically. The heat-conducting sheets (404) are arranged in pairs at intervals, and the heat-conducting rods (405) connect the heat-conducting sheets (404).

3. The electromagnetic relay with high efficiency heat dissipation according to claim 2, characterized in that: The heat conducting pipe (402) passes through each heat conducting sheet (404).

4. The electromagnetic relay with high heat dissipation efficiency according to claim 1, characterized in that: A heat dissipation coating (406) is provided between the heat-conducting ring (401) and the electromagnetic coil (202).

5. The electromagnetic relay with high efficiency heat dissipation according to claim 1, characterized in that: The first static contact is located directly below the first moving contact, and the second static contact is located directly below the second moving contact.

6. The electromagnetic relay with high efficiency heat dissipation according to claim 1, characterized in that: A first buffer pad (5) is provided below the moving rod (303), and a second buffer pad (6) is provided above the iron core (201), wherein the first buffer pad (5) and the second buffer pad (6) cooperate with each other.

7. The electromagnetic relay with high efficiency heat dissipation according to claim 1, characterized in that: The heat conducting pipe (402) is connected to the peripheral side wall of the heat conducting ring (401).

8. The electromagnetic relay with high efficiency heat dissipation according to claim 1, characterized in that: A protective cover (7) is provided on the outside of the heat dissipation body (403), and a plurality of heat dissipation holes are provided on the protective cover (7).

9. The electromagnetic relay with high efficiency heat dissipation according to claim 1, characterized in that: The first stationary contact and the second stationary contact are located in the same horizontal plane.

10. The electromagnetic relay with high efficiency heat dissipation according to claim 1, characterized in that: The heat conducting pipe (402) is made of copper.

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