Welded ceramic wiring terminal for refrigeration compressor

Abstract

The utility model discloses a welding ceramic wiring terminal for a refrigeration compressor, which comprises a terminal board, a welding ceramic motor wiring terminal and a nut, the welding ceramic motor wiring terminal and the terminal board are welded and fixed, and the welding ceramic motor wiring terminal is composed of a double-thread wiring terminal, a ceramic welding seat, a ceramic tube and a metal sealing cap. Wherein the double-end thread binding post and the metal sealing cap, the metal sealing cap and the ceramic tube, and the ceramic tube and the ceramic welding seat are connected in a brazing manner, the surface of the ceramic tube is metalized at the welding position, and the two ends of the double-end thread binding post are respectively exposed out of the two end parts of the ceramic tube. And the terminal plate is electrically connected to an outgoing line and a power line of a motor winding, and is fixedly arranged on a shell of the refrigeration compressor. The wiring terminal of the refrigeration compressor can meet the requirements of creepage distance and electrical clearance when the voltage is higher, and can be used for the wiring terminal of the refrigeration compressor with higher power supply voltage.

Description

Technical Field

[0001] The utility model relates to a refrigeration compressor, in particular to a connection terminal for a semi-hermetic and fully-hermetic refrigeration compressor. Background Art

[0002] At present, semi-hermetic and fully-hermetic refrigeration compressors generally use glass-metal sintered terminal blocks. The terminal blocks mainly use metal terminals to fix the connection with the terminal board through glass melting. However, when the power supply voltage is high, the creepage distance and electrical clearance requirements of the terminals also increase. For example, when the power supply voltage is 1140V, the creepage distance requirement is greater than or equal to 22mm and the electrical clearance requirement is greater than or equal to 18mm. However, it is difficult to increase the insulation height of the glass on the surface of the terminal block, and the creepage distance and electrical clearance requirements specified in the standard cannot be met. Therefore, glass-metal sintered terminal blocks are not suitable for refrigeration compressor applications with higher power supply voltages. Summary of the Invention

[0003] In order to overcome the deficiencies in the prior art, the present invention aims to provide a welding ceramic terminal for a refrigeration compressor.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a welded ceramic terminal for a refrigeration compressor, including a terminal board, a welded ceramic motor terminal and a nut, the welded ceramic motor terminal and the terminal board are welded and fixed, the welded ceramic motor terminal is composed of a double-headed threaded terminal, a ceramic welding seat, a ceramic tube and a metal cap, wherein the double-headed threaded terminal and the metal cap, the metal cap and the ceramic tube, and the ceramic tube and the ceramic welding seat are all connected by brazing, wherein the surface welding position of the ceramic tube is metallized, the two ends of the double-headed threaded terminal are respectively exposed outside the two ends of the ceramic tube, and are respectively electrically connected to the lead wire of the motor winding and the power line, and the terminal board is fixedly installed on the refrigeration compressor housing.

[0005] Furthermore, a spring washer, a flat washer and an insulating protective cover are sleeved on the double-ended threaded terminal.

[0006] Furthermore, the terminal board is equipped with six welded ceramic motor terminals.

[0007] Furthermore, a welded ceramic signal terminal is installed on the terminal board, and the welded ceramic signal terminal is welded and fixed on the terminal board. The welded ceramic signal terminal consists of a signal conductive column, a signal ceramic tube, a signal ceramic welding seat, a signal metal sealing cap and a signal wiring plug, wherein the signal conductive column and the signal metal sealing cap, the signal metal sealing cap and the signal ceramic tube, and the signal ceramic tube and the signal ceramic welding seat are all brazed. The surface of the signal ceramic tube is metallized at the welding position, and the signal conductive column is welded to the signal wiring plug. The two ends of the signal conductive column are respectively exposed outside the two ends of the signal ceramic tube, and are electrically connected to the internal sensor and external lead wire of the compressor through the signal wiring plug.

[0008] The utility model has the beneficial effect of a welded ceramic terminal for a refrigeration compressor: since ceramic tubes of different lengths can be manufactured as required, the welded ceramic terminal can meet the creepage distance and electrical clearance requirements required when the voltage is relatively high, and can be used as a terminal for a refrigeration compressor with a relatively high power supply voltage. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is the main view of the present utility model.

[0010] Figure 2 It is a left view of the present utility model.

[0011] Figure 3 This is the structural diagram of the welding ceramic motor terminal.

[0012] Figure 4 This is the structural diagram of the welding ceramic signal terminal.

[0013] In the figure: terminal board 1, welded ceramic motor terminal 2, double-headed threaded terminal 201, ceramic tube 202, ceramic welding seat 203, metal sealing cap 204, nut 3, spring washer 4, flat washer 5, welded ceramic signal terminal 6, signal conductive post 601, signal ceramic tube 602, signal ceramic welding seat 603, signal metal sealing cap 604, signal terminal plug 605, insulating protective cover 7. DETAILED DESCRIPTION

[0014] The technical solution of the present utility model is further described below in conjunction with the embodiments and drawings.

[0015] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown, the utility model provides a welded ceramic terminal for a refrigeration compressor, comprising a terminal board 1, a welded ceramic motor terminal 2, and a nut 3. The welded ceramic motor terminal 2 is welded and fixed to the terminal board 1. The welded ceramic motor terminal 2 consists of a double-headed threaded terminal 201, a ceramic welding seat 203, a ceramic tube 202, and a metal sealing cap 204. Brazing is adopted between the double-headed threaded terminal 201 and the metal sealing cap 204, between the metal sealing cap 204 and the ceramic tube 202, and between the ceramic tube 202 and the ceramic welding seat 203. The surface of the ceramic tube 202 is metallized at the welding position to facilitate welding. The surface of the ceramic tube 202 except the welding position remains insulated. The two ends of the double-headed threaded terminal 201 are respectively exposed outside the two ends of the ceramic tube 202 and are respectively electrically connected to the lead wire of the motor winding and the power line. The terminal board 1 is fixedly mounted on the housing of the refrigeration compressor. In this embodiment, the welded ceramic terminal achieves a creepage distance of 23 mm and an electrical clearance of 19 mm, meeting the safety requirements of the 1140V power supply voltage.

[0016] Furthermore, a spring washer 4, a flat washer 5 and an insulating protective cover 7 are sleeved on the double-threaded terminal 201, which play a role in preventing loosening and isolating the wiring of the motor winding lead wire and the power line.

[0017] Furthermore, the terminal board 1 is equipped with six welded ceramic motor terminals 2, and the lead wires of the motor windings are respectively connected to the welded ceramic motor terminals 2, and a star connection is adopted on the power supply side.

[0018] Furthermore, the terminal board 1 is provided with a welded ceramic signal terminal 6, which is welded and fixed on the terminal board 1. The welded ceramic signal terminal 6 consists of a signal conductive column 601, a signal ceramic tube 602, a signal ceramic welding seat 603 and a signal metal sealing cap 604, wherein the signal conductive column 601 and the signal metal sealing cap 604, the signal metal sealing cap 604 and the signal ceramic tube 602, and the signal ceramic tube 602 and the signal ceramic welding seat 603 are all brazed. The surface of the signal ceramic tube 602 is metallized at the welding position, and the signal conductive column 601 is welded to the signal wiring plug 605. The two ends of the signal conductive column 601 are respectively exposed outside the two ends of the signal ceramic tube 602, and are electrically connected to the internal sensor and external lead wire of the compressor through the signal wiring plug 605, thereby leading the internal sensor signal to the outside.

Claims

1. A welding ceramic terminal for a refrigeration compressor, characterized in that: The invention comprises a terminal board (1), a welding ceramic motor terminal (2), and a nut (3). The welding ceramic motor terminal (2) is welded and fixed to the terminal board (1). The welding ceramic motor terminal (2) is composed of a double-headed threaded terminal (201), a ceramic welding seat (203), a ceramic tube (202), and a metal sealing cap (204). Brazing is adopted to connect the double-headed threaded terminal (201) and the metal sealing cap (204), the metal sealing cap (204) and the ceramic tube (202), and the ceramic tube (202) and the ceramic welding seat (203). The surface of the ceramic tube (202) is metallized at the welding position to facilitate welding. The two ends of the double-headed threaded terminal (201) are respectively exposed outside the two ends of the ceramic tube (202) and are respectively electrically connected to the lead wire of the motor winding and the power line. The terminal board (1) is fixedly mounted on the housing of the refrigeration compressor.

2. The welding ceramic terminal for a refrigeration compressor according to claim 1, characterized in that: The double-ended threaded terminal (201) is also sleeved with a spring washer (4), a flat washer (5) and an insulating protective cover (7).

3. The welding ceramic terminal for a refrigeration compressor according to claim 1, characterized in that: The terminal board (1) is equipped with six welded ceramic motor terminals (2).

4. The welding ceramic terminal for a refrigeration compressor according to claim 1, characterized in that: A welding ceramic signal terminal (6) is mounted on the terminal board (1), and the welding ceramic signal terminal (6) is welded and fixed on the terminal board (1). The welding ceramic signal terminal (6) consists of a signal conductive column (601), a signal ceramic tube (602), a signal ceramic welding seat (603) and a signal metal sealing cap (604), wherein the signal conductive column (601) and the signal metal sealing cap (604), the signal metal sealing cap (604) and the signal ceramic tube (602), and the signal ceramic tube (602) and the signal ceramic welding seat (603) are all brazed. The surface of the signal ceramic tube (602) is metallized at the welding position, and the signal conductive column (601) is welded to the signal wiring plug (605). The two ends of the signal conductive column (601) are respectively exposed outside the two ends of the signal ceramic tube (602), and are respectively electrically connected to the internal sensor and the external lead wire of the compressor through the signal wiring plug (605).

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