CN2805214Y

CN2805214Y - Starter for electric motor of compressor

Info

Publication number: CN2805214Y
Application number: CN 200520072113
Authority: CN
Inventors: 赵云文
Original assignee: TIANYIN ELECTROMECHANICAL CO Ltd CHANGSHU
Current assignee: Changshu Tianyin Electromechanical Co Ltd
Priority date: 2005-05-17
Filing date: 2005-05-17
Publication date: 2006-08-09
Anticipated expiration: 2015-05-17

Abstract

The utility model relates to a starter for an electric motor of a compressor, which belongs to the technical field of an electric component. The utility model is composed of a PTC 1, a pair of spring terminals 2 and connecting pins 3, wherein the PTC 1 is arranged in a shell cavity; the pair of spring terminals 2 is corresponding to both sides of the PTC 1; the connecting pins 3 are respectively connected with the pair of spring terminals 2; the pair of spring terminals 2 which respectively presents a diagonal state is corresponding to both of the two sides of the PTC 1; both of the two sides of the PTC 1 are respectively and additionally provided with a pair of insulating baffle bulges 4 which are also in diagonal distribution, and the insulating baffle bulges 4 are arranged on the cavity wall of a PTC cavity in an extending way. Since the utility model causes the pair of spring terminals 2 which presents a diagonal state to be corresponding to both of the two sides of the PTC 1, and the utility model is additionally provided with the pair of insulating baffle bulges 4 which is also in diagonal distribution; in this way, when the PTC 1 bursts caused by accidental situation, the PTC 1 can present misplaced fracture, namely, the fracture is caused to be thorough and rapid so as to prevent the PTC 1 from striking fire.

Description

Compressor motor starter

Technical field

The utility model belongs to the electric components technical field, especially is the refrigerator compressor motor starter.

The background technology field

In the start-up circuit of refrigerant compressor, be in series with starter; it is to utilize the semistor of protector to be in little resistance conducting state at normal temperatures; and when compressor electric motor energising starting; electric current is referred to as the starting circuit that contact is connected compressor again through positive temperature coefficient thermistor and with the corresponding inserted sheet of positive temperature coefficient thermistor, makes the refrigeration compressor motor starting.Simultaneously, in the moment of the electric motor starting of compressor, electric current by the positive temperature coefficient thermistor of flowing through generates heat positive temperature coefficient thermistor rapidly, thereby make positive temperature coefficient thermistor reach the high value state in a short period of time, thereby cut off the starting circuit of compressor electric motor, make compressor electric motor enter normal operating condition.

The structure of the starter of being connected in the start-up circuit of present refrigerant compressor (claiming relay again) is almost stereotypedly by shown in Figure 1, although there is multiple different difference (not shown) in housing, but duplicate as the relation that is constituted between the positive temperature thermistor device (PTC) 1 of its core component, a pair of spring terminal 2, a pair of pin 3, that is to say that a pair of spring terminal 2 corresponds respectively to the both sides of the PTC1 in the positive temperature thermistor device chamber that is arranged on housing, a pair of pin 3 connects with a pair of spring terminal 2.The starter of this structure looks and does not seemingly have unreasonable part, but just exposes the following critical defect that will address in the use of reality.Because PTC1 runs into special circumstances, for example tend to occur explosion when voltage, rush of current or temperature shock, in case explosion is arranged then sparking can be caused, once there being spark phenomenon to bring the anxiety of burning product easily.As structure shown in Figure 1, when explosion appears in PTC1, often show state shown in Figure 2.From state shown in Figure 2 as can be known, the explosion of PTC1 shows as like the disconnected non-disconnected non-not clear-cut explosion of splitting of promptly seemingly splitting, but provide appropriate condition and seemingly split non-splitting to sparking, chase after and study carefully it, causing PTC1 seemingly to split the non-reason of splitting is to be same position ground each other corresponding to due to the both sides of PCT1 because of a pair of spring terminal 2.So the setting of a pair of spring terminal 2 in the prior art is unreasonable.

Summary of the invention

Task of the present utility model is that a kind of compressor motor starter that can avoid PTC spark phenomenon to occur when explosion will be provided.

Task of the present utility model is finished like this, a kind of compressor motor starter, by being located at the PTC1 in the shell chamber and forming corresponding to a pair of spring terminal 2 of PTC1 both sides and the pin 3 that connects with a pair of spring terminal 2 respectively, described a pair of spring terminal 2 is the both sides of state ground, diagonal angle corresponding to PTC1 respectively; Have additional respectively in described PTC1 both sides that a pair of also to be insulation retaining that the diagonal angle distributes prominent 4, insulation retaining prominent 4 is arranged on the chamber wall in PTC chamber 7.

The utility model since with a pair of spring terminal 2 be state ground, diagonal angle corresponding at PTC1 both sides and be aided with a pair of insulation retaining of setting up and also be the diagonal angle distributions and dash forward 4, like this when PTC1 runs into fortuitous event and explosion occurs, can show the dislocation fracture, it is abundant and clear-cut promptly to cause fracture, thereby can prevent the sparking of PTC1.

Description of drawings

Fig. 1 is the structural representation of the compressor motor starter in the prior art.

Fig. 2 is the PTC1 explosion view of the compressor motor starter in the prior art.

Fig. 3 is the structural representation of the utility model compressor motor starter.

Fig. 4 is the PTC1 explosion view of the utility model compressor motor starter.

Fig. 5 is an example structure figure of the utility model compressor motor starter.

Embodiment

Ask for an interview Fig. 3 and Fig. 5, compressor motor starter is installed in the shell block 6 of a tool cap 5, specifically is the PTC chamber 7 that is shaped on shell block 6, and described a pair of insulation retaining prominent 4 is arranged on the PTC chamber 7, shows as the diagonal angle and distribute on two chamber walls in PTC chamber 7.PTC1 is inserted in the PTC chamber 7, and its both sides, diagonal angle are pasted with described a pair of insulation retaining prominent 4 respectively and touched.One end of a pair of spring terminal 2 be the lower end in PTC chamber 7 with state ground, diagonal angle corresponding to or claim to paste the both sides of touching in PTC1, this set state can clearly reflect by Fig. 3, the other end of a pair of spring terminal 2 promptly the upper end respectively with pin 3 electrical couplings.

When in the utility model is connected on the start-up circuit of compressor, using, if because of unexpected improper situation occurs, when for example voltage, rush of current or temperature shock cause the PTC1 explosion, the explosion state of PTC1 often shows as state shown in Figure 4 so, from the state of Fig. 4 as can be known, the explosion of PTC1 shows as dislocation fracture, can not resemble to have the non-phenomenon of splitting of seemingly splitting separated but still in each other's thoughts as shown in Figure 2.Owing to be the dislocation fracture, thereby can eliminate the spark phenomenon of PTC1, the anxiety of stopping to cause therefrom of burning product.

Claims

1, a kind of compressor motor starter, by being located at the PTC (1) in the shell chamber and forming corresponding to a pair of spring terminal (2) of PTC (1) both sides and the pin (3) that connects with a pair of spring terminal (2) respectively, it is characterized in that described a pair of spring terminal (2) is the both sides of state ground, diagonal angle corresponding to PTC (1) respectively, have additional a pair of insulation retaining prominent (4) that the diagonal angle distributes that also is respectively in described PTC1 both sides, insulation retaining prominent (4) is arranged on the chamber wall in PTC chamber (7).