CN217405357U

CN217405357U - Compressor overload protector with dual protection function

Info

Publication number: CN217405357U
Application number: CN202221149042.8U
Authority: CN
Inventors: 袁智超; 袁圣杰
Original assignee: Changzhou Yuanda Electronic Technology Co ltd
Current assignee: Changzhou Yuanda Electronic Technology Co ltd
Priority date: 2022-05-13
Filing date: 2022-05-13
Publication date: 2022-09-09
Anticipated expiration: 2032-05-13

Abstract

The utility model provides a compressor overload protector with double protection functions, which comprises a movable contact, a metal sheet, a spring, a nut, a screw rod, a protection block, a heat conduction device and a fixing device; the utility model discloses improve external compressor overload protection ware's structure, can use different structures to satisfy the installation on equipment according to different needs, its structure is comparatively simple, secondly innovates to its structure for it can also play the guard action when bimetallic strip jumps abrupt principle inefficacy.

Description

Compressor overload protector with dual protection function

Technical Field

The utility model relates to a compressor overload protection ware with duplicate protection function belongs to the electrical components field.

Background

The principle of the HPE external compressor overload protector is that a snap-through bimetal protection element and contacts are connected in series in a compressor circuit, when the protector is subjected to heat generated by overload current or the external temperature rises, the heat is conducted to a bimetal strip, and when the bimetal strip is continuously heated to generate snap-through to turn over, a movable contact and a fixed contact on the bimetal strip are disconnected, so that the circuit is cut off to play a protection role.

Most its fixed mode of protector on the market is more traditional before, can appear bimetallic strip inefficacy and protector itself can continuously generate heat thereby arouse danger in the use, and this problem has been solved through improving its structure to this application.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a protective structure to solve the unable condition that drops of bimetallic strip among the prior art.

The purpose of the utility model can be achieved by adopting the following technical scheme:

a compressor overload protector with double protection functions comprises a movable contact, a metal sheet, a spring, a nut, a protection block, a screw, a heat conduction device and a fixing device; the movable contact, the bimetallic strip, the spring, the screw and the heat conduction device are arranged in the fixing device; the screw is arranged in the mounting groove of the fixing device; the outer surface of the screw rod is sequentially sleeved with a protective block, a spring and a nut from top to bottom; the protective block is made of fusible alloy and can be dissolved by heating, so that the two metal fragments are connected; the metal sheets comprise two metal sheets which are connected through a protection block, and the two metal sheets are respectively connected with a movable contact.

Preferably, the heat conduction device comprises a terminal component, a composite wiring pin, a PVC protector and a heating wire, wherein the composite wiring pin is provided with two connecting sheets which are respectively close to the two moving contacts; the terminal assembly is arranged at the end of one composite wiring pin; the heating wire is fixedly connected with the two composite wiring pins.

Preferably, the fixing device comprises a shell and a cover plate, and the cover plate is fixedly connected with the top of the shell.

Has the beneficial effects that:

1) the utility model discloses an adjustment protector inner structure for installation easy maintenance, with low costs realize multiple mounting means, satisfy the needs of different environment.

2) The utility model discloses a set up the protection piece and make the protector when inefficacy in the face of bimetallic strip in the in-service use process for the protector can not continuously generate heat and play the guard action.

Drawings

Fig. 1 is a schematic structural view of the overload protector for a compressor with dual protection functions of the present invention.

Fig. 2 is a schematic structural view of the overload protector of the compressor with the dual protection function of the present invention.

Fig. 3 is a schematic structural view of the overload protector of the compressor with the dual protection function of the present invention.

In the figure: the device comprises a shell 1, a movable contact 2, a metal sheet 3, a spring 4, a nut 5, a protective block 6, a screw 7, a terminal component 8, a connecting sheet 9, a cover plate 10, a composite wiring pin 11, a PVC sheath 12 and a heating wire 13.

Detailed Description

The present invention is described in detail with reference to the accompanying drawings, which are not intended to limit the scope of the present invention.

As shown in fig. 1-3, an overload protector of compressor with double protection function comprises a movable contact 2, a metal sheet 3, a spring 4, a nut 5, a protection block 6, a screw 7, a heat conduction device and a fixing device; the movable contact 2, the bimetallic strip 3, the spring 4, the screw 7 and the heat conduction device are arranged in the fixing device; the screw 7 is arranged in the mounting groove of the fixing device; the outer surface of the screw 7 is sequentially sleeved with a protective block 6, a spring 4 and a nut 5 from top to bottom; the protective block 6 is made of fusible alloy, and the protective block 6 can be dissolved when heated, so that the two metal fragments are connected; the metal sheets 3 comprise two metal sheets 3, the two metal sheets 3 are connected through a protection block 6, and the two metal sheets 3 are respectively connected with one movable contact 2.

Preferably, the heat conduction device comprises a terminal component 8, a composite wiring pin 11, a PVC sheath 12 and a heating wire 13, wherein the composite wiring pin 11 is provided with two connecting sheets 9 which are respectively close to the two movable contacts 2; the terminal assembly 8 is arranged at the end of one of the composite terminal pins 11; the heating wire 13 is fixedly connected with the two composite wiring pins 11.

Preferably, the fixing device comprises a housing 1 and a cover plate 10, wherein the cover plate 10 is fixedly connected with the top of the housing 1.

Preferably, the protective block 6 is a fusible alloy, and the protective block 6 is dissolved by heating, so that the two metal pieces are connected.

The specific implementation method comprises the following steps:

the terminal assembly 8 and the PVC sheath 12 are removed, the connecting piece 9 is arranged in the mounting groove of the shell 1 or the terminal assembly 8, the PVC sheath 12 and the connecting piece 9 are removed, a special connecting module is welded in the mounting groove of the composite wiring pin 11 on one side and the shell 1, when the protector is heated by overload current or the external temperature rises, heat is conducted to the bimetallic strip and the protective block, when the protector is continuously heated, the protective block is melted, and the metal strip jumps and turns over.

The fusible alloy is indium alloy, the components of the fusible alloy can be adjusted according to actual needs to meet the use needs, and when the fusible alloy is normally used, the metal sheet is continuously heated to generate sudden jump and turn over; when the double sheets fail and cannot be turned over, the fusible alloy is melted to be disconnected, so that the equipment is protected.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and embellishments can be made without departing from the scope of the present invention, and these improvements and embellishments should also be regarded as the protection scope of the present invention.

Claims

1. A compressor overload protector with double protection functions is characterized by comprising a movable contact (2), a metal sheet (3), a spring (4), a nut (5), a protection block (6), a screw (7), a heat conduction device and a fixing device; the movable contact (2), the bimetallic strip (3), the spring (4), the screw (7) and the heat conduction device are arranged in the fixing device; the screw (7) is arranged in the mounting groove of the fixing device; the outer surface of the screw rod (7) is sequentially sleeved with a protection block (6), a spring (4) and a nut (5) from top to bottom; the protective block (6) is made of fusible alloy, and the protective block (6) can be dissolved when heated, so that the two metal fragments are connected; the two metal sheets (3) are connected through a protection block (6), and the two metal sheets (3) are respectively connected with a movable contact (2).

2. A compressor overload protector with double protection function according to claim 1, characterized in that the heat conduction device comprises a terminal assembly (8), a composite terminal pin (11), a PVC sheath (12) and a heating wire (13), the composite terminal pin (11) has two terminals respectively abutting against the two moving contacts (2), and the composite terminal pin (11) is provided with a connecting piece (9); the terminal assembly (8) is arranged at the end of one composite wiring pin (11); the heating wire (13) is fixedly connected with the two composite wiring pins (11).

3. A compressor overload protector with double protection function according to claim 1, characterized in that the fixing device comprises a shell (1) and a cover plate (10), and the cover plate (10) is fixedly connected with the top of the shell (1).