Improved integrated starting protector structure

Abstract

An improved integrated starting protector structure comprises a shell, and the lower portion of a shell cavity is provided with a heavy hammer type current starter installation cavity and a negative temperature coefficient thermistor installation cavity. The counter weight type current starter is inserted in the counter weight type current starter mounting cavity, and the negative temperature coefficient thermistor is arranged in the negative temperature coefficient thermistor mounting cavity. The electric control cabinet is characterized by further comprising a motor protector, a motor starter, a protector first pin connector bar, a protector second pin connector bar and a power supply live wire connector bar; the upper part of the shell is provided with a power supply live wire connector bar cavity and a protector external equipment electrical connection seat cavity, the rear end of the upper part is provided with a motor protector cavity, the rear side corresponding to the wall of the connector bar cavity is provided with a protector second connector bar reed pin cavity, and the left side corresponding to the heavy hammer type current starter mounting cavity is provided with a motor starter cavity; the motor protector is embedded in the motor protector cavity, and the motor protector is provided with a first protector pin and a second protector pin. An excellent integrated intensification degree is embodied; and a good protection effect is achieved on the compressor.

Description

Technical Field

[0001] The utility model belongs to the technical field of starting protection devices for refrigeration compressor motors, and particularly relates to an improved integrated starting protector structure. Background Technique

[0002] The above-mentioned integrated starting protector refers to a starting protector for a compressor motor that reasonably combines a positive temperature coefficient thermistor and a negative temperature coefficient thermistor in the same housing. The positive and negative temperature coefficient thermistors are respectively abbreviated as PTC and NTC in English. The combination of the two can meet the large-current starting requirements of large commercial compressors, making the starting process of the refrigeration compressor motor safer and more reliable, and at the same time effectively improving the overload and overheat protection functions of the motor.

[0003] Technical information about the aforementioned positive temperature coefficient thermistor (also known as "positive temperature coefficient thermistor", the same below) and negative temperature coefficient thermistor (also known as "negative temperature coefficient thermistor", the same below) can be found in publicly available Chinese patent documents. The former is mainly used for refrigeration compressors in household refrigerators, such as CN2606490Y (motor starter and protector), CN2606491Y (integrated motor starter and protector), CN2664280Y (motor starter with improved structure), CN100581043C (energy-saving integrated single-phase AC motor starter and protector), CN102386815A (integrated motor starter with improved structure), CN101369790A (an energy-saving integrated single-phase AC motor starter and protector), CN206211857U (refrigeration compressor non-power-consuming starter protector), CN106385204A (refrigeration compressor non-power-consuming starter protector), and CN104734570A (non-power-consuming energy-saving single-phase AC motor starter protector), etc.; examples of the latter include CN2733039Y (a fully enclosed hammer-type starter for an R600a refrigerant compressor), CN202906801U (a hammer starter with improved sealing performance), and CN206481237U (a hammer-type current starter with improved structure), etc.

[0004] As is known in the industry, the protection measures of a compressor motor protector mainly include: overheat protection. For example, when the motor is working and the temperature is too high, it will cause damage or even burnout of the motor. After installing the protector, it can monitor the motor temperature and automatically cut off the power supply when the temperature exceeds the preset value to avoid damage to the motor; overload protection. For example, when the motor current exceeds the rated current value, it indicates that the load is too large, which is likely to cause overheating, damage or even fire of the motor. After installing the protector, it can cut off the power supply to protect the safe operation of the motor; overvoltage protection. When the input voltage of the current exceeds the rated value, the protector can automatically cut off the power supply to prevent damage to the motor; leakage protection. When a leakage phenomenon is detected, it will automatically cut off the power supply to protect the motor and personal safety. Still as is known in the industry, since overheating of the compressor is the most common problem, the response requirement of the protector to the compressor temperature is relatively strict. Specifically, when the housing (also called the box) together with the protector is installed on the refrigeration compressor, how to make the protector as close as possible to the compressor so that the circuit can be disconnected in time when the compressor has a high temperature and when the high temperature is caused by circuit overload. Since the function of the positive temperature coefficient thermistor, that is, the so-called motor starter, and the application of the negative temperature coefficient thermistor with a current limiting function in the heavy hammer type current starter are well-known and can be fully understood by reading the above-mentioned prior published literature, the applicant will not elaborate further. Summary of the Invention

[0005] The object of the present invention is to provide an improved integrated starting protector structure which helps to integrate the positive temperature coefficient thermistor and the negative temperature coefficient thermistor in the same housing to achieve the dual functions of shunt and current limiting, and reflects the integrated degree of the whole body, and is conducive to maintaining a good close relationship between the protector and the compressor after being installed on the compressor, so as to improve the ability of the protector to disconnect the circuit in time when the compressor overheats.

[0006] The task of the present utility model is completed as follows. An improved integrated starting protector structure includes a housing with a housing cover. The housing has a housing cavity. In the lower part of the housing cavity, a hammer-type current starter installation cavity and a negative temperature coefficient thermistor installation cavity located behind the hammer-type current starter installation cavity and separated by a partition wall of the negative temperature coefficient thermistor installation cavity are provided; a hammer-type current starter and a negative temperature coefficient thermistor. The hammer-type current starter is inserted into the hammer-type current starter installation cavity, and the negative temperature coefficient thermistor is arranged in the negative temperature coefficient thermistor installation cavity. The first lead I of the negative temperature coefficient thermistor of the negative temperature coefficient thermistor is electrically connected to the electrical connection seat of the first lead of the negative temperature coefficient thermistor. The electrical connection seat of the first lead of the negative temperature coefficient thermistor is inserted and fixed to the upper right side of the partition wall of the negative temperature coefficient thermistor installation cavity and is electrically connected to the first electrical connection lead I of the current starter of the hammer-type current starter. The first end of the coil of the hammer-type current starter is electrically connected to the lower end of the power connection insert of the hammer-type current starter, and the upper end of the power connection insert is configured as an insert power connection end. The insert power connection end is electrically connected to the power zero line socket row, and the power zero line socket row is arranged on the socket row wall of the socket row cavity formed in the housing cavity. The socket row wall corresponds to the upper part of the hammer-type current starter installation cavity in an isolated state. The second end of the coil is electrically connected to the second electrical connection lead II of the current starter of the hammer-type current starter. The M leg of the second electrical connection lead II of the current starter corresponds to the M leg hole on the bottom wall of the housing opened on the bottom wall of the housing. Among them, the insert leg of the static contact piece of the hammer-type current starter corresponds to the S jack opened on the bottom wall of the housing and corresponding to the front side of the M leg hole on the bottom wall of the housing, and the hammer-type current starter also has an operating capacitor insert leg. It is characterized in that it further includes a motor protector, a motor starter, a first insert leg wiring row of the protector, a second insert leg wiring row of the protector, and a power live wire wiring row. In the upper part of the housing and at a position corresponding to the upper part of the socket row cavity, a power live wire wiring row cavity and a protector external device electrical connection seat cavity separated from each other are formed. The protector external device electrical connection seat cavity is located on the right side of the power live wire wiring row cavity and is separated by a wiring seat cavity partition wall. A motor protector cavity is formed at the rear end of the upper part of the housing. The motor protector cavity penetrates the bottom wall of the housing and communicates with the outside. A second wiring row reed insert leg cavity of the protector is provided at a position corresponding to the rear side of the socket row wall. A motor starter cavity is separated by a cavity partition wall at a position corresponding to the left side of the hammer-type current starter installation cavity. The motor protector is embedded in the motor protector cavity, and one end of the motor protector facing the bottom wall of the housing protrudes from the bottom wall of the housing and contacts the refrigeration compressor in the use state. The motor protector has a first insert leg and a second insert leg of the protector,The first pin of the protector and the second pin of the protector face forward. The motor starter is arranged in the motor starter cavity. The negative temperature coefficient thermistor has a second lead pin II of the negative temperature coefficient thermistor. The second lead pin II of the negative temperature coefficient thermistor is electrically connected to the motor starter. The running capacitor pin is also electrically connected to the motor starter. The front end of the wiring row of the first pin of the protector forms an electrical connection seat for an external device. The electrical connection seat for the external device is embedded in the cavity of the electrical connection seat for the external device of the protector. The rear end of the wiring row of the first pin of the protector forms a first plug spring of the wiring row. The first plug spring of the wiring row is inserted and matched with the first pin of the protector in the motor protector cavity. The front end of the wiring row of the second pin of the protector forms a reed pin. The reed pin is embedded in the cavity of the reed pin of the second wiring row of the protector and corresponds to the reed pin hole formed on the bottom wall of the housing of the shell. The rear end of the wiring row of the second pin of the protector forms a second plug spring of the wiring row. The second plug spring of the wiring row is also inserted and matched with the second pin of the protector in the motor protector cavity. The power live wire wiring row is embedded in the cavity of the power live wire wiring row.,

[0007] In a specific embodiment of the present invention, an electrical connection wire relief notch communicating with the wiring row cavity is formed on the front side of the housing and at a position corresponding to the plug row cavity. A ground pin cavity is formed at the lower part of the housing and at a position in front of the motor starter cavity. The ground pin cavity is separated from the motor starter cavity by a ground pin cavity wall. The area of the bottom wall of the housing corresponding to the ground pin cavity constitutes the bottom wall of the ground pin cavity and forms a group of ground pin seats spaced from top to bottom. A ground pin is inserted on each of the group of ground pin seats. The group of ground pins is inserted from the left side of the bottom wall of the housing to the right into a group of ground pin seats and extends into the ground pin cavity.,

[0008] In another specific embodiment of the present invention, a pair of left - right slots for the power neutral wire plug row are formed on the plug row cavity wall and on the front side of the plug row cavity wall. A plug board of the power neutral wire plug row is formed at the rear side of the power neutral wire plug row. The plug board of the power neutral wire plug row is inserted and matched with the pair of left - right slots for the power neutral wire plug row. And the plug piece power connection end is electrically fixed - connected to the right end of the plug board of the power neutral wire plug row. The power neutral wire plug row pins of the power neutral wire plug row include an N pin, a pair of electrical connection pins for external devices, and an electrical connection pin for the running and starting capacitors. The N pin, the pair of electrical connection pins for external devices, and the electrical connection pin for the running and starting capacitors face the plug row cavity.,

[0009] In yet another specific embodiment of the present utility model, an insertion groove for the pins of an operating capacitor is formed in the upper part of the partition wall between the cavities. The pins of the operating capacitor are fitted into the insertion groove for the pins of the operating capacitor, and the upper front end of the pins of the operating capacitor extends into the cavity for the pins of the operating capacitor that is separated by the housing and located on the upper front side of the partition wall between the cavities. On the upper right side of the partition wall of the negative temperature coefficient thermistor mounting cavity, an embedding cavity for the electrical connection seat of the first lead of the negative temperature coefficient thermistor is formed. And at a position corresponding to the lower part of the embedding cavity for the electrical connection seat of the first lead of the negative temperature coefficient thermistor, an embedding cavity for the positioning seat of the electrical connection piece of the front insert of the starter is formed. The electrical connection seat of the first lead of the negative temperature coefficient thermistor is fitted into the embedding cavity for the electrical connection seat of the first lead of the negative temperature coefficient thermistor. The second lead Ⅱ of the negative temperature coefficient thermistor is electrically connected to the motor starter arranged in the motor starter cavity at the position of the embedding cavity for the positioning seat of the electrical connection piece of the front insert of the starter.

[0010] In still another specific embodiment of the present utility model, the motor starter includes a positive temperature coefficient thermistor, a front insert of the starter, and a rear insert of the starter. The positive temperature coefficient thermistor, the front insert of the starter, and the rear insert of the starter are jointly arranged in the motor starter cavity in an inserted manner. Among them, the front insert of the starter is located on the front side of the positive temperature coefficient thermistor and is in electrical contact with the electrode surface on the front side of the positive temperature coefficient thermistor. An electrical connection pin for the starting capacitor extends from the upper part of the front insert of the starter, and the electrical connection pin for the starting capacitor is fixedly fitted into the pin slot of the electrical connection pin seat for the starting capacitor formed in the housing cavity of the housing. A connecting piece of the front insert of the starter extends backward from the lower part of the front insert of the starter. A positioning seat for the connecting piece of the front insert of the starter is formed at the end of the connecting piece of the front insert of the starter. The positioning seat for the connecting piece of the front insert of the starter is fixedly fitted into the embedding cavity for the positioning seat of the connecting piece of the front insert of the starter. The second lead Ⅱ of the negative temperature coefficient thermistor is electrically connected to the positioning seat for the connecting piece of the front insert of the starter in a state of being embedded in the lead embedding groove formed on the positioning seat for the connecting piece of the front insert of the starter. The rear insert of the starter is located on the rear side of the positive temperature coefficient thermistor and is in electrical contact with the electrode surface on the rear side of the positive temperature coefficient thermistor. A spring seat for the pins of the operating capacitor extends from the upper part of the rear insert of the starter, and the lower part of the pins of the operating capacitor is inserted into the spring seat for the pins of the operating capacitor.

[0011] In still another specific embodiment of the present utility model, a pair of elastic claws of the front insert piece of the starter that pop out backward are formed in the middle of the front insert piece of the starter. This pair of elastic claws of the front insert piece of the starter are in electrical contact with the electrode surface on the front side of the positive temperature coefficient thermistor. A pair of elastic claws of the rear insert piece of the starter that pop out forward are formed in the middle of the rear insert piece of the starter. This pair of elastic claws of the rear insert piece of the starter are in electrical contact with the electrode surface on the rear side of the positive temperature coefficient thermistor.

[0012] In yet another specific embodiment of the present utility model, a pair of positioning claws of the front insert piece of the starter that fold forward are formed on the right side of the front insert piece of the starter. This pair of positioning claws of the front insert piece of the starter are fitted with the positioning claw embedding notches formed on the front cavity wall of the motor starter cavity h. A pair of positioning claws of the rear insert piece of the starter that fold backward are formed on the right side of the rear insert piece of the starter. This pair of positioning claws of the rear insert piece of the starter are fitted with the positioning claw embedding notches formed on the rear cavity wall of the motor starter cavity.

[0013] In yet another specific embodiment of the present utility model, a first protector pin seat and a second protector pin seat are formed in the motor protector cavity. The first protector pin is inserted into the first protector pin seat from back to front, and the second protector pin is inserted into the second protector pin seat from back to front. The first insertion spring of the wiring row is inserted and matched with the first protector pin in the first protector pin seat, and the second insertion spring of the wiring row is inserted and matched with the second protector pin in the second protector pin seat.

[0014] In yet another more specific embodiment of the present utility model, a circular stack ring that protrudes from the surface of the bottom wall of the housing and faces away from the housing cavity is formed on the side of the bottom wall of the housing opposite to the housing cavity. The M leg insertion hole, S jack, and reed pin hole on the bottom wall of the housing are located in the area enclosed by the stack ring. The rear side surface of the motor protector at one end of the motor protector facing the bottom wall of the housing is in the same plane as the rear side surface of the coil of the stack ring. And in the use state, the stack ring is matched with the three-wire column boss formed on the refrigeration compressor.

[0015] In yet another further specific embodiment of the present utility model, the M leg insertion hole, S jack, and reed pin hole on the bottom wall of the housing form an equilateral triangle positional relationship, where the S jack is located in front of the M leg insertion hole on the bottom wall of the housing.

[0016] The technical effect of the technical solution provided by the present utility model lies in that: since the motor starter with a positive temperature coefficient thermistor, the weight type current starter and the negative temperature coefficient thermistor are integrated in the same housing, the dual functions of shunting and current limiting can be well exerted and an excellent integrated intensification degree can be reflected; since one end of the motor protector facing the bottom wall of the housing protrudes out of the bottom wall of the housing, it can be in contact with the refrigeration compressor in the use state, and the circuit can be disconnected in time when the compressor overheats, playing a good protective role for the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of an embodiment of the present utility model;

[0018] Figure 2 is Figure 1 a schematic diagram observed after the assembly is completed and the cover is removed;

[0019] Figure 3 is Figure 1 and Figure 2 a schematic diagram of the weight type current starter shown in [Figure number] observed from the back to the front;

[0020] Figure 4 is Figure 1 a schematic diagram of the cover and the housing after being fitted together;

[0021] Figure 5 It is an electrical connection schematic diagram of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] In order to more clearly understand the technical essence and beneficial effects of the present utility model, the following will be described in detail by way of embodiments. However, the descriptions of the embodiments are not limitations on the technical solutions of the present utility model. Any equivalent transformation that is merely formal rather than substantial based on the concept of the present utility model should be regarded as falling within the scope of the technical solutions of the present utility model.

[0023] In the following descriptions, unless otherwise specified, the directional or positional concepts such as up, down, left, right, front and back are all based on Figure 1 the position state shown, and thus cannot be understood as special limitations on the technical solutions provided by the present utility model.

[0024] Please refer to Figures 1 to 4, shows a housing 1 equipped with a housing cover 14. The housing 1 has a housing cavity 11. In the lower part of the housing cavity 11, a weight - type current starter installation cavity 111 is partitioned, and a negative temperature coefficient thermistor installation cavity 113 located at the rear side (i.e., the rear position) of the weight - type current starter installation cavity 111 and separated by a negative temperature coefficient thermistor installation cavity partition wall 112. The materials of the aforementioned housing 1 and the housing cover 14 are plastics and are made by a mold; shows a weight - type current starter 2 and a negative temperature coefficient thermistor 3 (i.e., the English abbreviation is "NTC"). The weight - type current starter 2 is inserted into the weight - type current starter installation cavity 111, and the negative temperature coefficient thermistor 3 is arranged in the aforementioned negative temperature coefficient thermistor installation cavity 113. And the first lead Ⅰ31 of the negative temperature coefficient thermistor 3 of the negative temperature coefficient thermistor is electrically connected to the first lead electrical connection seat 311 of the negative temperature coefficient thermistor. And the first lead electrical connection seat 311 of the negative temperature coefficient thermistor is inserted and fixed to the upper right part of the aforementioned negative temperature coefficient thermistor installation cavity partition wall 112 and is electrically connected to the first electrical connection leg Ⅰ21 of the current starter 2 of the weight - type current starter 2. The first end 221 of the coil 22 of the weight - type current starter 2 is electrically connected to the lower end of the power connection insert 23 of the weight - type current starter 2. And the upper end of the power connection insert 23 is configured as an insert power connection end 231. The insert power connection end 231 is electrically connected to the power zero - line socket row 2311. And the power zero - line socket row 2311 is arranged on the socket row wall 114b of the socket row cavity 114a formed in the housing cavity 11. The socket row wall 114b corresponds to the upper part of the aforementioned weight - type current starter installation cavity 111 in an isolated state. The second end 222 of the coil 22 is electrically connected to the second electrical connection leg Ⅱ24 of the current starter 2 of the weight - type current starter 2. The M - leg 241 of the second electrical connection leg Ⅱ24 corresponds to the M - leg hole 131 opened on the bottom wall 13 of the housing 1. Among them, the contact pin 25 of the static contact piece of the weight - type current starter 2 corresponds to the S - jack 132 opened on the bottom wall 13 of the housing 1 and corresponding to the front side of the M - leg hole 131 on the bottom wall of the housing, and the weight - type current starter 2 also has an operating capacitor pin 26.

[0025] Technical key points of the technical solution provided by the present utility model: In the structural system of the improved integrated starting protector, there is also included a motor protector 4, a motor starter 5, a first pin terminal block 6 of the protector, a second pin terminal block 7 of the protector, and a live wire terminal block 8. At the upper part of the aforementioned housing 1 and above the corresponding socket cavity 114a, there are formed a live wire terminal block cavity 114c and an electrical connection socket cavity 114e for external devices of the protector that are separated from each other. The electrical connection socket cavity 114e for external devices of the protector is located on the right side of the live wire terminal block cavity 114c and is separated by a partition wall 114d of the socket cavity. At the rear end of the upper part of the housing 1, there is formed a motor protector cavity 115. The motor protector cavity 115 penetrates through the bottom wall 13 of the housing 1 and communicates with the outside. At a position corresponding to the rear side of the aforementioned socket cavity wall 114b, there is a separated second pin terminal block reed pin cavity 114f. At a position corresponding to the left side of the aforementioned weight type current starter installation cavity 111, there is a separated motor starter cavity 114h through an inter-cavity partition wall 114g. The aforementioned motor protector 4 is embedded in the aforementioned motor protector cavity 115, and one end of the motor protector 4 facing the aforementioned bottom wall 13 of the housing protrudes from the bottom wall 13 of the housing and contacts the refrigeration compressor in the use state. The motor protector 4 has a first pin 41 of the protector and a second pin 42 of the protector. The first pin 41 of the protector and the second pin 42 of the protector face forward. The motor starter 5 is arranged in the aforementioned motor starter cavity 114h. The aforementioned negative temperature coefficient thermistor 3 has a second lead-out pin II 32 of the negative temperature coefficient thermistor. The second lead-out pin II 32 of the negative temperature coefficient thermistor is electrically connected to the motor starter 5. The aforementioned running capacitor pin 26 is also electrically connected to the motor starter 5. The front end of the first pin terminal block 6 of the protector forms an electrical connection socket 61 for external devices. The electrical connection socket 61 for external devices is embedded in the aforementioned electrical connection socket cavity 114e for external devices of the protector. The rear end of the first pin terminal block 6 of the protector forms a first socket spring 62 of the terminal block. The first socket spring 62 of the terminal block is inserted and mated with the first pin 41 of the protector in the aforementioned motor protector cavity 115. The front end of the second pin terminal block 7 of the protector forms a reed pin 71. The reed pin 71 is embedded in the aforementioned second pin terminal block reed pin cavity 114f and corresponds to a reed pin hole 133 opened on the bottom wall 13 of the housing 1. The rear end of the second pin terminal block 7 of the protector forms a second socket spring 72 of the terminal block. The second socket spring 72 of the terminal block is also inserted and mated with the second pin 42 of the protector in the aforementioned motor protector cavity 15. The live wire terminal block 8 is embedded in the aforementioned live wire terminal block cavity 114c.

[0026] On the front side of the aforementioned housing 1 and at a position corresponding to the aforementioned socket cavity 114a, there is an electrical connection line relief notch 12 communicating with the wiring socket cavity 114a; at the lower part of the housing 1 and at a position in front of the aforementioned motor starter cavity 114h, there is formed a grounding pin cavity 114i, which is separated from the motor starter cavity 114h by a grounding pin cavity wall 114j. The area of the aforementioned housing bottom wall 13 corresponding to the grounding pin cavity 114i is configured as the bottom wall of the grounding pin cavity and is formed with a set of grounding pin seats 114k spaced from top to bottom. On each of the set of grounding pin seats 114k, a grounding pin 9 is inserted. The set of grounding pins 9 is inserted into the set of grounding pin seats 114k from the left side to the right side of the housing bottom wall 13 and extends into the aforementioned grounding pin cavity 114i.

[0027] Please focus on Figure 1 , on the aforementioned socket cavity wall 114b and on the front side of the socket cavity wall 114b, there is formed a pair of left - right direction slots 114m for the power zero - line socket. On the rear side of the aforementioned power zero - line socket 2311, there is formed a power zero - line socket plug board 23111, which is inserted and mated with the aforementioned pair of left - right direction slots 114m for the power zero - line socket. And the aforementioned insert power connection end 231 is electrically fixed to the right end of the power zero - line socket plug board 23111 by welding or soldering. The power zero - line socket pins of the power zero - line socket 2311 include an N pin 23112, a pair of external device electrical connection pins 23113, and a running and starting capacitor electrical connection pin 23114. The N pin 23112, the pair of external device electrical connection pins 23113, and the running and starting capacitor electrical connection pin 23114 face the aforementioned socket cavity 114a.

[0028] An operating capacitor pin slot 114n is provided in the upper part of the aforementioned inter-chamber partition wall 114g. The aforementioned operating capacitor pin 26 is fitted into the operating capacitor pin slot 114n, and the upper front end of the operating capacitor pin 26 extends into an operating capacitor pin cavity 114p which is provided in the housing cavity 11 of the housing 1 and is located on the upper front side of the inter-chamber partition wall 114g. A negative temperature coefficient thermistor first lead electrical connection seat slot 1121 is formed in the upper right part of the aforementioned negative temperature coefficient thermistor mounting cavity partition wall 112, and a starter front insert electrical connection piece positioning seat slot 1122 is formed at a position corresponding to the lower part of the negative temperature coefficient thermistor first lead electrical connection seat slot 1121. The aforementioned negative temperature coefficient thermistor first lead electrical connection seat 311 is fitted into the negative temperature coefficient thermistor first lead electrical connection seat slot 1121, and the second lead II 32 of the aforementioned negative temperature coefficient thermistor is electrically connected to the aforementioned motor starter 5 provided in the aforementioned motor starter cavity 114h at the position of the starter front insert electrical connection piece positioning seat slot 1122.

[0029] Continue to see Figures 1 to 2 , the aforementioned motor starter 5 includes a positive temperature coefficient thermistor 51, a starter front insert 52 and a starter rear insert 53. The positive temperature coefficient thermistor 51 (i.e., the English abbreviation is "PTC"), the starter front insert 52 and the starter rear insert 53 are jointly arranged in the aforementioned motor starter cavity 114h in an inserted manner. Among them, the starter front insert 52 is located on the front side of the positive temperature coefficient thermistor 51 and is in electrical contact with the electrode surface on the front side of the positive temperature coefficient thermistor 51. A starting capacitor electrical connection pin 521 extends from the upper part of the starter front insert 52, and the starting capacitor electrical connection pin 521 is fixedly fitted into a pin socket slot 114r of a starting capacitor electrical connection pin socket 114q formed in the housing cavity 11 of the aforementioned housing 1. A starter front insert electrical connection piece 522 extends backward from the lower part of the starter front insert 52, and a starter front insert electrical connection piece positioning seat 5221 is formed at the end of the starter front insert electrical connection piece 522. The starter front insert electrical connection piece positioning seat 5221 is fixedly fitted into the aforementioned starter front insert electrical connection piece positioning seat slot 1122. The second lead II 32 of the aforementioned negative temperature coefficient thermistor is electrically connected to the starter front insert electrical connection piece positioning seat 5221 in a state of being embedded in a lead embedding groove 52211 formed on the starter front insert electrical connection piece positioning seat 5221. The starter rear insert 53 is located on the rear side of the positive temperature coefficient thermistor 51 and is in electrical contact with the electrode surface on the rear side of the positive temperature coefficient thermistor 51. An operating capacitor pin plug seat 531 extends from the upper part of the starter rear insert 53, and the lower part of the aforementioned operating capacitor pin 26 is inserted into the operating capacitor pin plug seat 531.

[0030] Continue to see Figure 1 and Figure 2 In the middle of the front insertion piece 52 of the starter mentioned above, a pair of elastic claws 523 of the front insertion piece of the starter that pop out backward are formed. This pair of elastic claws 523 of the front insertion piece of the starter are in electrical contact with the electrode surface on the front side of the positive temperature coefficient thermistor 51 mentioned above. In the middle of the rear insertion piece 53 of the starter mentioned above, a pair of elastic claws 532 of the rear insertion piece of the starter that pop out forward are formed. This pair of elastic claws 532 of the rear insertion piece of the starter are in electrical contact with the electrode surface on the rear side of the positive temperature coefficient thermistor 51 mentioned above.

[0031] On the right side of the front insertion piece 52 of the starter mentioned above, a pair of positioning claws 524 of the front insertion piece of the starter that fold forward are formed. This pair of positioning claws 524 of the front insertion piece of the starter are fitted with the positioning claw embedding notches formed on the front cavity wall of the motor starter cavity 114h mentioned above (this front cavity wall is substantially the cavity wall 114j of the grounding pin cavity mentioned above). On the right side of the rear insertion piece 53 of the starter mentioned above, a pair of positioning claws 533 of the rear insertion piece of the starter that fold backward are formed. This pair of positioning claws 533 of the rear insertion piece of the starter are fitted with the positioning claw embedding notches formed on the rear cavity wall of the motor starter cavity 114h mentioned above (this rear cavity wall is substantially the partition wall 114g between the cavities mentioned above).

[0032] From Figure 1 and Figure 2 As shown, a first pin seat 1151 of the protector and a second pin seat 1152 of the protector are formed in the motor protector cavity 115 mentioned above. The first pin 41 of the protector mentioned above is inserted into the first pin seat 1151 of the protector from back to front, and the second pin 42 of the protector mentioned above is inserted into the second pin seat 1152 of the protector from back to front; the first insertion spring 62 of the wiring row mentioned above is inserted and mated with the first pin 41 of the protector in the first pin seat 1151 of the protector, and the second insertion spring 72 of the wiring row mentioned above is inserted and mated with the second pin 42 of the protector in the second pin seat 1152 of the protector.

[0033] Please pay special attention to see Figure 4 , on the side of the bottom wall 13 of the housing 1 mentioned above that faces away from the housing cavity 11, a stack ring 134 that protrudes from the surface of the bottom wall 13 of the housing and is circular is formed. The leg hole 131, S jack 132, and reed pin hole 133 on the bottom wall M of the housing are located in the area enclosed by the stack ring 134 mentioned above. The rear side surface 43 (also called the "rear end face") of the motor protector 4 at the end facing the bottom wall 131 of the housing is on the same plane as the coil rear side surface 1341 of the stack ring 134. And in the use state, the stack ring 134 mentioned above is matched with the three-wire column boss formed on the refrigeration compressor.

[0034] The leg insertion hole 131, S jack 132, and reed pin insertion hole 133 on the bottom wall M of the housing form an equilateral triangle, where the S jack 132 is located in front of the leg insertion hole 131 on the bottom wall M of the housing.

[0035] See Figure 5 , consisting of Figures 1 to 3 The refrigeration compression motor shown has a stator composed of a main motor winding L1 and an auxiliary motor winding L2. One end of the main motor winding L1 forms a main winding lead-out end M, which is electrically connected to one end of the aforementioned coil 22. One end of the auxiliary motor winding L2 forms an auxiliary winding lead-out end S, which is electrically connected to the operating capacitor pin 26. The other end of the aforementioned coil 22, one end of the starting capacitor Cs, and one end of the operating capacitor Ck are commonly electrically connected to the power connection insert 23. The aforementioned power connection insert 23 and the combined lead-out end C of the main and auxiliary motor windings L1 and L2 constitute a pair of power connection terminals for connecting to an external AC power supply. The other end of the starting capacitor Cs is electrically connected to one end of the NTC thermistor and one end of the PTC thermistor respectively. The other end of the NTC thermistor is electrically connected to the first electrical connection pin Ⅰ21 of the current starter. The other end of the PTC thermistor and the other end of the operating capacitor Ck are commonly electrically connected to the operating capacitor pin 26. An overheat and overload protector B is also electrically connected between the combined lead-out end C of the main and auxiliary motor windings L1 and L2 and the external AC power supply.

[0036] Since the working principle, action mechanism, connection in the circuit, etc. of the motor starter 5 of the motor protector 4 of the present utility model are the same as those of the patent documents mentioned by the applicant in the background art column above, especially CN113489382B (integrated motor starter protector), and since the working principle and action mechanism of the weight type current starter 2 and the negative temperature coefficient thermistor 3 (NTC) can also be seen in the patent documents mentioned by the applicant in the background art column above, especially CN206481237U (weight type current starter with improved structure), the applicant will not elaborate further.

[0037] In summary, the technical solution provided by the present utility model makes up for the deficiencies in the existing technology, successfully completes the invention task, and faithfully realizes the technical effects described by the applicant in the technical effects column above.

Claims

1. An improved integrated starting protector structure, comprising a housing (1) with a housing cover (14). The housing (1) has a housing cavity (11). In the lower part of the housing cavity (11), a weight-type current starter installation cavity (111) and a negative temperature coefficient thermistor installation cavity (113) located behind the weight-type current starter installation cavity (111) and separated by a negative temperature coefficient thermistor installation cavity partition wall (112) are partitioned. A weight-type current starter (2) and a negative temperature coefficient thermistor (3). The weight-type current starter (2) is inserted into the weight-type current starter installation cavity (111). The negative temperature coefficient thermistor (3) is arranged in the negative temperature coefficient thermistor installation cavity (113). And the first lead I (31) of the negative temperature coefficient thermistor (3) of the negative temperature coefficient thermistor is electrically connected to the first lead electrical connection seat (311) of the negative temperature coefficient thermistor. And the first lead electrical connection seat (311) of the negative temperature coefficient thermistor is inserted and fixed to the upper right part of the negative temperature coefficient thermistor installation cavity partition wall (112) and is electrically connected to the first electrical connection lead I (21) of the weight-type current starter (2). The first end (221) of the coil (22) of the weight-type current starter (2) is electrically connected to the lower end of the power connection insert (23) of the weight-type current starter (2). And the upper end of the power connection insert (23) is configured as an insert power connection end (231). The insert power connection end (231) is electrically connected to the power zero line socket (2311). And the power zero line socket (2311) is arranged on the socket cavity wall (114b) of the socket cavity (114a) formed in the housing cavity (11). The socket cavity wall (114b) corresponds to the upper part of the weight-type current starter installation cavity (111) in an isolated state. The second end (222) of the coil (22) is electrically connected to the second electrical connection lead II (24) of the weight-type current starter (2). The M leg (241) of the second electrical connection lead II (24) of the current starter corresponds to the M leg hole (131) opened on the bottom wall (13) of the housing (1). Among them, The static contact pin (25) of the static contact piece of the weight - type current starter (2) corresponds to the S jack (132) which is formed on the bottom wall (13) of the housing (1) and is located at the front side of the M leg hole (131) corresponding to the bottom wall of the housing, and the weight - type current starter (2) further has a running capacitor pin (26). It is characterized in that: it further includes a motor protector (4), a motor starter (5), a protector first - pin wiring row (6), a protector second - pin wiring row (7) and a power - line wiring row (8). At the upper part of the housing (1) and above the corresponding plug - row cavity (114a), there are formed a power - line wiring - row cavity (114c) and a protector external - device electrical - connection seat cavity (114e) which are separated from each other. The protector external - device electrical - connection seat cavity (114e) is located on the right side of the power - line wiring - row cavity (114c) and is separated by a wiring - seat cavity partition wall (114d). At the upper - rear end of the housing (1), there is formed a motor - protector cavity (115), and this motor - protector cavity (115) penetrates through the bottom wall (13) of the housing (1) and communicates with the outside. At a position corresponding to the rear side of the plug - row cavity wall (114b), there is a separated protector second - wiring - row reed - pin cavity (114f). At a position corresponding to the left side of the weight - type current - starter installation cavity (111), there is a separated motor - starter cavity (114h) through a cavity - between partition wall (114g). The motor protector (4) is embedded in the motor - protector cavity (115), and one end of the motor protector (4) facing the bottom wall (13) of the housing protrudes from the bottom wall (13) of the housing and is in contact with the refrigeration compressor in the use state. The motor protector (4) has a protector first - pin (41) and a protector second - pin (42), and the protector first - pin (41) and the protector second - pin (42) face forward. The motor starter (5) is arranged in the motor - starter cavity (114h). The negative - temperature - coefficient thermistor (3) has a negative - temperature - coefficient thermistor second lead - out pin II (32), and this negative - temperature - coefficient thermistor second lead - out pin II (32) is electrically connected to the motor starter (5). The running capacitor pin (26) is also electrically connected to the motor starter (5). The front end of the protector first - pin wiring row (6) forms an external - device electrical - connection seat (61), and this external - device electrical - connection seat (61) is embedded in the protector external - device electrical - connection seat cavity (114e). The rear end of the protector first - pin wiring row (6) forms a wiring - row first - plug reed (62), and this wiring - row first - plug reed (62) is inserted and mated with the protector first - pin (41) in the motor - protector cavity (115). The front end of the protector second - pin wiring row (7) forms a reed - pin (71).The reed pin (71) is embedded in the reed pin cavity (114f) of the second wiring row of the protector and corresponds to the reed pin hole (133) formed on the bottom wall (13) of the housing (1). The rear end of the second pin wiring row (7) of the protector is formed with a second insertion reed (72) of the wiring row. The second insertion reed (72) of the wiring row is also inserted and mated with the second pin (42) of the protector in the motor protector cavity (15). The power live wire wiring row (8) is embedded in the power live wire wiring row cavity (114c).

2. The improved integrated starting protector structure according to claim 1, wherein: On the front side of the housing (1) and at a position corresponding to the socket cavity (114a), there is an electrical connection wire relief notch (12) communicating with the wiring socket cavity (114a); at the lower part of the housing (1) and in front of the motor starter cavity (114h), there is a grounding pin cavity (114i) formed. The grounding pin cavity (114i) and the motor starter cavity (114h) are separated by a grounding pin cavity wall (114j). The area of the housing bottom wall (13) corresponding to the grounding pin cavity (114i) is configured as the bottom wall of the grounding pin cavity and is provided with a set of grounding pin seats (114k) spaced from top to bottom. Each of the grounding pins (9) is inserted on the set of grounding pin seats (114k). The set of grounding pins (9) is inserted from the left side to the right side of the housing bottom wall (13) on the set of grounding pin seats (114k) and extends into the grounding pin cavity (114i).

3. The improved integrated starting protector structure according to claim 1, characterized in that: On the socket cavity wall (114b) and on the front side of the socket cavity wall (114b), there are a pair of left - right direction slots (114m) for the power zero - line socket. On the rear side of the power zero - line socket (2311), there is a power zero - line socket plug board (23111). The power zero - line socket plug board (23111) is inserted into the pair of left - right direction slots (114m) for the power zero - line socket. And the tab power connection end (231) is electrically fixedly connected to the right end of the power zero - line socket plug board (23111). The power zero - line socket pins of the power zero - line socket (2311) include an N pin (23112), a pair of external device electrical connection pins (23113), and a running and starting capacitor electrical connection pin (23114). The N pin (23112), the pair of external device electrical connection pins (23113), and the running and starting capacitor electrical connection pin (23114) face the socket cavity (114a).

4. The improved integrated starting protector structure according to claim 1, characterized in that: An operating capacitor pin slot (114n) is provided at the upper part of the inter-chamber partition wall (114g). The operating capacitor pin (26) is fitted into the operating capacitor pin slot (114n), and the upper front end of the operating capacitor pin (26) extends into the operating capacitor pin cavity (114p) which is disposed in the housing cavity (11) of the housing (1) and located at the upper front side of the inter-chamber partition wall (114g). At the upper right side of the negative temperature coefficient thermistor mounting cavity partition wall (112), a cavity (1121) for embedding the electrical connection seat of the first lead of the negative temperature coefficient thermistor is formed. And at a position corresponding to and below the cavity (1121) for embedding the electrical connection seat of the first lead of the negative temperature coefficient thermistor, a cavity (1122) for positioning the electrical connection piece of the front insert piece of the starter is formed. The electrical connection seat (311) of the first lead of the negative temperature coefficient thermistor is fitted into the cavity (1121) for embedding the electrical connection seat of the first lead of the negative temperature coefficient thermistor. The second lead II (32) of the negative temperature coefficient thermistor is electrically connected to the motor starter (5) disposed in the motor starter cavity (114h) at the position of the cavity (1122) for positioning the electrical connection piece of the front insert piece of the starter.

5. The improved integrated starting protector structure according to claim 4, wherein: The described motor starter (5) includes a positive temperature coefficient thermistor (51), a front starter insert (52), and a rear starter insert (53). The positive temperature coefficient thermistor (51), the front starter insert (52), and the rear starter insert (53) are jointly arranged in the motor starter cavity (114h) in an inserted and embedded manner. Among them, the front starter insert (52) is located on the front side of the positive temperature coefficient thermistor (51) and is in electrical contact with the electrode surface on the front side of the positive temperature coefficient thermistor (51). An electrical connection pin (521) for the starting capacitor extends upward from the upper part of the front starter insert (52). The electrical connection pin (521) for the starting capacitor is fixedly embedded in the pin socket slot (114r) of the starting capacitor electrical connection pin socket (114q) formed in the housing cavity (11) of the housing (1). A front starter insert electrical connection piece (522) extends backward from the lower part of the front starter insert (52). A front starter insert electrical connection piece positioning seat (5221) is formed at the end of the front starter insert electrical connection piece (522). The front starter insert electrical connection piece positioning seat (5221) is fixedly embedded in the front starter insert electrical connection piece positioning seat embedding cavity (1122). The second lead pin II (32) of the negative temperature coefficient thermistor is in electrical connection with the front starter insert electrical connection piece positioning seat (5221) in a state of being embedded in the lead pin embedding groove (52211) formed on the front starter insert electrical connection piece positioning seat (5221). The rear starter insert (53) is located on the rear side of the positive temperature coefficient thermistor (51) and is in electrical contact with the electrode surface on the rear side of the positive temperature coefficient thermistor (51). An operating capacitor pin spring seat (531) extends upward from the upper part of the rear starter insert (53). The lower part of the operating capacitor pin (26) is inserted and matched with the operating capacitor pin spring seat (531).

6. The improved integrated starting protector structure according to claim 5, wherein: A pair of elastically popped backward front starter insert elastic claws (523) are formed in the middle of the front starter insert (52). The pair of front starter insert elastic claws (523) are in electrical contact with the electrode surface on the front side of the positive temperature coefficient thermistor (51). A pair of elastically popped forward rear starter insert elastic claws (532) are formed in the middle of the rear starter insert (53). The pair of rear starter insert elastic claws (532) are in electrical contact with the electrode surface on the rear side of the positive temperature coefficient thermistor (51).

7. The improved integrated starting protector structure according to claim 5 or 6, characterized in that: A pair of forward-folded front starter insert positioning claws (524) are formed on the right side of the front starter insert (52). The pair of front starter insert positioning claws (524) are inserted and matched with the front starter insert positioning claw embedding notch formed on the front cavity wall of the motor starter cavity (114h). A pair of backward-folded rear starter insert positioning claws (533) are formed on the right side of the rear starter insert (53). The pair of rear starter insert positioning claws (533) are inserted and matched with the rear starter insert positioning claw embedding notch formed on the rear cavity wall of the motor starter cavity (114h).

8. The improved integrated starting protector structure according to claim 1, characterized in that: Inside the motor protector cavity (115), a first protector pin socket (1151) and a second protector pin socket (1152) are formed. The first protector pin (41) is inserted into the first protector pin socket (1151) from back to front, and the second protector pin (42) is inserted into the second protector pin socket (1152) from back to front. The first insertion spring (62) of the wiring row is inserted and mated with the first protector pin (41) inside the first protector pin socket (1151), and the second insertion spring (72) of the wiring row is inserted and mated with the second protector pin (42) inside the second protector pin socket (1152).

9. The improved integrated starting protector structure according to claim 1, characterized in that: On the side of the bottom wall (13) of the housing (1) facing away from the housing cavity (11), a circular stack ring (134) protruding from the surface of the bottom wall (13) of the housing is formed. The M leg insertion hole (131), S jack (132), and reed pin insertion hole (133) of the bottom wall of the housing are located within the area enclosed by the stack ring (134). The rear side surface (43) of the motor protector at one end of the motor protector (4) facing the bottom wall (131) of the housing is in the same plane as the rear side surface (1341) of the coil of the stack ring (134). And in the use state, the stack ring (134) is matched with the three-wire column boss formed on the refrigeration compressor.

10. The improved integrated starting protector structure according to claim 1 or 9, characterized in that: The M leg insertion hole (131), S jack (132), and reed pin insertion hole (133) of the bottom wall of the housing form an equilateral triangle positional relationship, where the S jack (132) is located in front of the M leg insertion hole (131) of the bottom wall of the housing.

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