Protector, compressor and air conditioner

Abstract

The invention discloses a protector, a compressor and an air conditioner, and relates to the technical field of compressors, the protector comprises a first base and a protection module, the first base is provided with at least two mounting through holes, and the inner ends of wiring terminals are accommodated in the mounting through holes; the protection module comprises a protection circuit and two conductive terminals electrically connected with the protection circuit, one conductive terminal is connected with the part, inserted into the mounting through hole, of one wiring terminal, the other conductive terminal is connected with one lead terminal, and the parts, inserted into the mounting through hole, of the rest wiring terminals are connected with the rest lead terminals. According to the technical scheme provided by the invention, the risk of short circuit and other problems caused by conductive foreign matter attachment of the wiring terminal can be reduced.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and particularly to a protector, compressor, and air conditioner. Background Technology

[0002] The compressor uses a protector to prevent overload operation of its internal motor. These protectors typically include external and internal types. The internal protector is installed inside the compressor and connected to the wiring terminals that extend into the compressor. If conductive foreign matter such as copper shavings carried by the refrigerant adheres to the exposed parts of the wiring terminals, it can easily cause short circuits, arcing, or burning between adjacent terminals or between the terminals and other metal components, leading to equipment malfunctions and safety hazards.

[0003] Therefore, how to reduce the risk of short circuits and other problems caused by the adhesion of conductive foreign matter to the terminals is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0004] The main objective of this invention is to provide a protector, compressor, and air conditioner that reduces the risk of short circuits and other problems caused by conductive foreign matter adhering to the wiring terminals.

[0005] To achieve the above objectives, the present invention provides a protector for use in a compressor having a terminal block assembly and a lead terminal assembly, the protector comprising: The first base has at least two mounting through holes, and the inner end of the terminal block is received in the mounting through holes; The protection module includes a protection circuit and two conductive terminals electrically connected to the protection circuit. One of the conductive terminals is connected to a portion of a wiring terminal inserted into the mounting through hole, and the other conductive terminal is connected to a lead terminal. The portions of the remaining wiring terminals inserted into the mounting through hole are connected to the remaining lead terminals.

[0006] In one embodiment, there are three mounting through holes and two conductive terminals. One conductive terminal is installed in one of the mounting through holes, and the other conductive terminal is exposed on the outer surface of the first base and connected to a lead terminal. The remaining mounting through holes are used for the lead terminal and the wiring terminal to be inserted together and connected to each other.

[0007] In one embodiment, the three mounting through holes include a first through hole and two second through holes disposed on opposite sides of a first direction. The distance between the two second through holes gradually increases along the first direction, and the second through holes and the first through hole are sequentially distributed along the first direction.

[0008] In one embodiment, the cross-sectional shape of the mounting through hole has a major axis and a minor axis, the major axis of the first through hole extends along the first direction, and the major axis of the second through hole extends in the first direction away from the other second through hole.

[0009] In one embodiment, the first base includes a body portion and a mounting portion. The body portion is provided with the protection circuit. The mounting portion is connected to one side of the body portion and is provided with a first through hole and a second through hole. The first through hole is provided with the conductive terminal and is disposed close to the body portion.

[0010] In one embodiment, the body portion and the mounting portion are integrally formed.

[0011] In one embodiment, the first base is configured to be made of polyester, polyphenylene sulfide, or liquid crystal polymer.

[0012] In one embodiment, one of the conductive terminals is exposed on the side of the body portion away from the mounting portion and is configured as a wing structure to be sleeved with the lead terminal configured as a flag-shaped terminal.

[0013] In one embodiment, the second through hole has a clearance notch near the edge of the opening of the first through hole, and the lead terminal assembly further includes a motor lead that passes through the clearance notch and is connected to the lead terminal.

[0014] The present invention also proposes a compressor, comprising: The casing contains a compression chamber; Terminal block assembly; Lead terminal assembly; and The aforementioned protector and the lead terminal are disposed in the compression chamber. One end of the terminal extends into the compression chamber. At least one terminal is inserted into the mounting through hole and connected to the conductive terminal. At least one terminal is inserted into the mounting through hole and connected to the lead terminal.

[0015] In one embodiment, the mounting through hole has a first opening and a second opening opposite each other, the first opening being disposed away from the terminal assembly, the lead terminal being configured as a flag terminal, the terminal including a connecting flap, the flag terminal being inserted into the mounting through hole from the first opening and engaging with the connecting flap inserted from the second opening.

[0016] In one embodiment, the minimum distance d between the wiring wing and the wall of the mounting through hole is configured as: 0.5mm≤d≤5mm.

[0017] In one embodiment, the wall surface of the mounting through hole is configured as a prism surface.

[0018] In one embodiment, the terminal assembly further includes a second base, the second base including a base plate portion and a cover portion, the terminal further including a terminal post, the inner end of the terminal post passing through the base plate portion and having the terminal wing piece mounted thereon; the cover portion is disposed on the plate surface of the base plate portion near the protector, and the edge of the mounting through hole is at least partially received within the inner peripheral space of the cover portion.

[0019] The present invention also proposes an air conditioner including the aforementioned compressor.

[0020] In the technical solution of this invention, the inner end of all terminals is housed within a mounting through hole. That is, the wall of the mounting through hole surrounds the outer periphery of the inner end of the terminal, thus providing a barrier and protection for the inner end. This reduces the probability of conductive foreign objects approaching and adhering to the inner end of the terminal, thereby reducing the risk of short circuits and other problems caused by the adhesion of conductive foreign objects. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the structure of an embodiment of the protector provided by the present invention; Figure 2 for Figure 1 The diagram shows the installation of the protector, terminal block assembly, and lead terminal block assembly. Figure 3 for Figure 2 Exploded view of the structure shown.

[0023] Explanation of icon numbers: 100 Protector; 110 First base; 111 Mounting through hole; 112 First through hole; 113 Second through hole; 114 Clearance notch; 115 First opening; 116 Body; 117 Mounting part; 120 Conductive terminal; 200 Terminal assembly; 210 Terminal; 211 Terminal post; 212 Terminal wing; 220 Second base; 221 Base plate; 222 Cover part; 230 Insulation structure; 300 Lead terminal assembly; 310 Lead terminal; 320 Motor lead.

[0024] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0027] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0028] The compressor uses a protector to prevent overload operation of its internal motor. These protectors typically include external and internal types. The internal protector is an automatic protection device integrated into the compressor. It directly monitors the temperature or current changes of the motor windings and automatically cuts off the circuit in case of overload (abnormal current) or overheating (abnormal temperature), preventing the compressor from being damaged due to motor burnout or mechanical damage.

[0029] Because the built-in protector is installed inside the compressor and connected to the terminals that extend into the compressor, if conductive foreign objects such as copper shavings carried by the refrigerant adhere to the exposed parts of the terminals, it can easily cause short circuits, arcing, or burning between adjacent terminals or between the terminals and other metal components, leading to equipment failure and safety hazards.

[0030] Therefore, how to reduce the risk of short circuits and other problems caused by the adhesion of conductive foreign matter to the terminals is a technical problem that urgently needs to be solved in this field.

[0031] In view of this, please refer to Figure 1 The present invention proposes a protector 100 for use in compressors. The protector 100 can reduce the risk of short circuits and other problems caused by the adhesion of conductive foreign matter to the terminal 210.

[0032] Without loss of generality, the compressor has a terminal assembly 200 and a lead terminal assembly 300. The terminal assembly 200 includes at least two terminals 210, and the lead terminal assembly 300 includes at least two lead terminals 310. The outer end of the terminal 210 is exposed outside the compressor, and the inner end of the terminal 210 extends into the interior of the compressor and is connected to one end of the lead terminal 310 via a protector 100. The other end of the lead terminal 310 is connected to a motor inside the compressor.

[0033] The lead terminal assembly 300 may include a motor lead 320, and the lead terminal 310 is connected to a motor (not shown in the figures) through the motor lead 320. Of course, in other embodiments, the motor lead may not be provided, and the motor may be directly connected to the lead terminal.

[0034] Please see Figure 1 In one embodiment of the present invention, the protector 100 includes a first base 110 and a protection module. The first base 110 is provided with at least two mounting through holes 111, and the inner end of the terminal 210 is received in the mounting through hole 111. The protection module includes a protection circuit (not shown in the drawings) and two conductive terminals 120 that are electrically connected to the protection circuit. One conductive terminal 120 is connected to the portion of the terminal 210 inserted into the mounting through hole 111, and the other conductive terminal 120 is connected to a lead terminal 310. The portions of the remaining terminals 210 inserted into the mounting through hole 111 are connected to the remaining lead terminals 310. The compressor has a compression chamber for refrigerant flow, and the inner end of the terminal 210 refers to the portion that extends into the compression chamber.

[0035] Thus, the inner ends of all terminals 210 are accommodated within the mounting through holes 111. Specifically, the wall of the mounting through holes 111 surrounds the outer periphery of the inner ends of the terminals 210, providing a barrier and protection for the inner ends. This reduces the probability of conductive foreign objects approaching and adhering to the inner ends of the terminals 210, thereby lowering the risk of short circuits or other problems caused by the adhesion of conductive foreign objects.

[0036] Without loss of generality, the core structure of the protector 100 typically includes a bimetallic element (which bends and deforms when heated, cooperating with a stationary contact to achieve circuit switching), a heating element (connected in series in the circuit, indirectly heating the bimetallic element when overloaded), a base plate (fixing the bimetallic element and the stationary contact), a housing (made of insulating material), and a sealing encapsulation layer (such as insulating paper and sealing injection molding compound) to ensure insulation and sealing in the high-pressure, high-temperature, and oil-refrigerant mixed environment inside the compressor, preventing short circuits caused by media infiltration, and supporting automatic reset function after fault clearance. The housing of the protector 100 is the first base 110 of this embodiment. The protection circuit of this embodiment can have various structural forms, such as including the aforementioned bimetallic element and heating element, etc., and this application does not specifically limit it.

[0037] In one embodiment, there are three mounting through holes 111 and two conductive terminals 120. One conductive terminal 120 is installed in one mounting through hole 111, and the other conductive terminal 120 is exposed on the outer surface of the first base 110 and connected to a lead terminal 310. The remaining mounting through holes 111 are used for the other lead terminals 310 and wiring terminals 210 to be inserted and connected to each other.

[0038] Please see Figure 1 Optionally, the number of mounting through holes 111 can be three. The three mounting through holes 111 are distributed in a roughly triangular configuration on the first base 110 to make the structure of the protector 100 more compact. The number of lead terminals 310 and wiring terminals 210 is also three. The three wiring terminals 210 are respectively installed in the three mounting through holes 111, of which two wiring terminals 210 are connected to two lead terminals 310 in a one-to-one correspondence, and the remaining wiring terminal 210 is connected to a conductive terminal 120.

[0039] Specifically, in this embodiment, one end of the protection circuit is connected to the terminal 210 via a conductive terminal 120 installed in the mounting through hole 111, and the other end of the protection circuit is connected to the lead terminal 310 via another conductive terminal 120 exposed outside the first base 110, thereby achieving the purpose of connecting the protection circuit in series between a terminal 210 and a lead terminal 310. The other two mounting through holes 111 do not have conductive terminals 120, and the terminals 210 inside them are directly connected to the lead terminal 310 to achieve electrical connection between the motor and the terminal 210.

[0040] The cross-sectional shape of the mounting hole 111 can be polygonal, circular, or elliptical, etc., and the cross-sectional shape of the terminal block 210 can also be polygonal, circular, or elliptical, etc. For example, please refer to... Figure 1The terminal block 210 may include a terminal post 211 and a terminal flap 212 fixed on the terminal post 211. The terminal post 211 has a circular cross-sectional shape, while the terminal flap 212 and the mounting through hole 111 both have polygonal cross-sectional shapes. The width and length of the mounting through hole 111 are both greater than those of the terminal flap 212. That is, the wall surface of the mounting through hole 111 is configured as a prism, such as the peripheral surface of a cuboid.

[0041] To increase the contact area between the lead terminal 310 and the terminal block 210, enabling the lead terminal assembly 300 and the terminal block assembly 200 to be compatible with high-power compressors, in one embodiment, the lead terminal 310 is optionally configured as a flag-shaped terminal, and the terminal block 210 includes a terminal flap 212. The mounting through-hole 111 has opposing first and second openings (not shown in the figures), with the first opening 115 located away from the terminal block assembly 200. The flag-shaped terminal is inserted into the mounting through-hole 111 through the first opening 115 and engages with the terminal flap 212 inserted through the second opening. The terminal flap 212 is a sheet-like structure adapted to the flag-shaped terminal, and the terminal flap 212 can be fixedly mounted on the terminal block 211.

[0042] Thus, by interlocking the flag-shaped terminal and the connecting wing 212, the contact area and conductive area of ​​both can be increased, enabling the transmission of a larger power current. Furthermore, the flag-shaped terminal and the connecting wing 212 are inserted from the first hole 115 and the second hole respectively, facilitating the installation of the lead terminal 310 and the connecting terminal 210 on the first base 110 and avoiding interference between them during installation. Of course, in other embodiments, the flag-shaped terminal and the connecting wing 212 may not be provided.

[0043] In one embodiment, the minimum distance d between the wiring flap 212 and the wall of the mounting through hole 111 is configured as 0.5mm ≤ d ≤ 5mm. For example, d can be 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, or 5mm. Thus, on the one hand, a minimum distance d greater than or equal to 0.5mm allows sufficient installation space between the wiring flap 212 and the wall of the mounting through hole 111, enabling the flag-shaped terminal to be inserted into the mounting through hole 111 and properly engaged with the wiring flap 212, thereby improving assembly convenience. On the other hand, a minimum distance d less than or equal to 5mm avoids an excessively large size for the mounting through hole 111 and the first base 110, which would hinder the miniaturization design of the protector 100. Of course, in other embodiments, the minimum spacing d can also be other ranges of values, for example, the minimum spacing d can be configured as 6mm≤d≤10mm.

[0044] In one embodiment, the conductive terminal 120 may optionally be pre-installed in the mounting through hole 111. For example, the conductive terminal 120 and the first base 110 may be assembled together using adhesive or screws. Since the conductive terminal 120 is pre-installed in the mounting through hole 111, the terminal 210 can be directly connected to the conductive terminal 120 during the insertion of the terminal 210 into the mounting through hole 111.

[0045] Of course, in other embodiments, the conductive terminal 120 located within the mounting through hole 111 and / or the conductive terminal 120 exposed outside the first base 110 may be integrally formed with the first base 110. For example, in an embodiment where the body portion 116 and the mounting portion 117 are integrally formed by injection molding, the conductive terminal 120 may be integrally formed with the first base 110. This simplifies the manufacturing process of the protector 100, improves its production efficiency, and also enhances the structural stability of the conductive terminal 120.

[0046] In one embodiment, optionally, the minimum wall thickness t of the mounting through hole 111 is configured as follows: t ≥ 0.3 mm. For example, t can be 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, 1.2 mm, 1.3 mm, 1.4 mm, 1.5 mm, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, or 2 mm. It is understood that if the minimum thickness t is too large, it will result in a larger external size and volume of the protector 100, which is not conducive to the arrangement and installation of the protector 100 in the compression chamber.

[0047] In this way, on the one hand, it can be ensured that the wall of the mounting through hole 111 has a certain structural strength to avoid structural failure of the mounting through hole 111. On the other hand, it is beneficial to the manufacturing and forming of the first base 110 and improves its production yield. Of course, in other embodiments, the minimum wall thickness t can also be other values.

[0048] Please see Figure 1In one embodiment, the three mounting through holes 111 include a first through hole 112 and two second through holes 113 disposed on opposite sides of a first direction. The distance between the two second through holes 113 gradually increases along the first direction, and the second through holes 113 and the first through hole 112 are distributed sequentially along the first direction. That is, when moving along the first direction, the device passes through the second through hole 113 first, and then through the first through hole 112. The second through hole 113 is located upstream of the first through hole 112 in the first direction. This allows for a more compact arrangement of the three mounting through holes 111, which is beneficial for the miniaturization design of the protector 100. Of course, in other embodiments, the three mounting through holes 111 can also adopt other arrangements, for example, the three mounting through holes 111 can be arranged in a straight line along the first direction.

[0049] Optionally, the cross-sectional shape of the mounting through-hole 111 has a major axis and a minor axis. The major axis of the first through-hole 112 extends along a first direction, and the major axis of the second through-hole 113 extends away from the other second through-hole 113 in the first direction. That is, the shape formed by connecting the center point of the first through-hole 112 and the center points of the two second through-holes 113 in pairs is a triangle, and the two second through-holes 113 are located on the same side of the first through-hole 112. In this way, the two motor leads 320 are respectively connected to the two terminals 210 in the two second through-holes 113, and the two motor leads 320 can be staggered along the first direction, which can not only facilitate the arrangement and installation of the motor leads 320, but also avoid the risk of interference or short circuit between different motor leads 320 or different lead terminals 310. Of course, other arrangements can also be used in other embodiments.

[0050] The length of the connecting wing 212 is parallel to the axis of the second through hole 113, the width of the connecting wing 212 is parallel to the major axis of the second through hole 113, and the thickness of the connecting wing 212 is parallel to the minor axis of the second through hole 113. Similarly, the conductive terminal 120 disposed in the first through hole 112 can also be configured as a wing structure, with its length parallel to the axis of the first through hole 112, its width parallel to the major axis of the first through hole 112, and its thickness parallel to the minor axis of the first through hole 112.

[0051] In one embodiment, the first base 110 includes a body portion 116 and a mounting portion 117. The body portion 116 is provided with a protection circuit. The mounting portion 117 is connected to one side of the body portion 116 and is provided with a first through hole 112 and a second through hole 113. The first through hole 112 is provided with a conductive terminal 120 and is located close to the body portion 116. It can be understood that since the conductive terminal 120 in the first through hole 112 is connected to the protection circuit, placing the first through hole 112 close to the body portion 116 is beneficial for shortening the electrical connection path between the conductive terminal 120 and the protection circuit, and is also beneficial for the manufacturing and molding of the protector 100. Of course, in other embodiments, the second through hole 113 may be located close to the body portion 116, or the first through hole 112 and the second through hole 113 may be located on opposite sides of the body portion 116.

[0052] In one embodiment, the body portion 116 and the mounting portion 117 are integrally formed. This simplifies the manufacturing process of the first base 110 and the protector 100, improves production efficiency, and enhances the structural stability of the mounting portion 117 and its mounting through-hole 111. More importantly, during the installation of the first base 110 to the terminal assembly 200, the wall of the mounting through-hole 111 automatically wraps around the outer periphery of the inner end of the terminal 210. That is, after the first base 110 is installed, the mounting portion 117 can act as a shield, eliminating the need for additional installation operations on the mounting portion 117 and thus saving on compressor assembly processes. Specifically, the body portion 116 and the mounting portion 117 can be integrally formed by injection molding. Of course, in other embodiments, the body portion 116 and the mounting portion 117 can also be separately formed and then assembled into one piece by fasteners such as screws, or directly welded together, or directly bonded together.

[0053] To meet the insulation and sealing requirements of the high-pressure, high-temperature, and oil-refrigerant mixed environment inside the compressor, in one embodiment, the first base 110 may optionally be made of polyester, polyphenylene sulfide, or liquid crystal polymer. In this way, the first base 110 can provide good protection and insulation for its internal protection circuitry.

[0054] In one embodiment, a conductive terminal 120 is exposed on the side of the body portion 116 away from the mounting portion 117 and is configured as a wing structure to be sleeved with the lead terminal 310 configured as a flag-shaped terminal. This structure is simple and easy to implement, and the fact that all three lead terminals 310 are flag-shaped terminal configurations facilitates material storage management of the lead terminals 310 and motor leads 320, and helps to shorten assembly time. Of course, in other embodiments, the lead terminal 310 inserted into the second through hole 113 may be configured as a flag-shaped terminal, while the lead terminal 310 connected to the exposed conductive terminal 120 may be configured with other structural forms, such as a configuration for inserting a cylinder.

[0055] In one embodiment, the second through hole 113 has a clearance notch 114 near the edge of the opening of the first through hole 112. The lead terminal assembly 300 also includes a motor lead 320, which passes through the clearance notch 114 and is connected to the lead terminal 310. Thus, the clearance notch 114 for the motor lead 320 improves the smoothness of the wiring of the motor lead 320 and reduces the risk of the motor lead 320 detaching from the lead terminal 310 due to additional and continuous resistance. This improves the service life of the lead terminal assembly 300. More importantly, it allows for more structure of the lead terminal 310 to be accommodated within the second through hole 113 while allowing the motor lead 320 to be wired in the first direction, reducing the risk of short circuits caused by conductive foreign matter adhering to the structure of the lead terminal 310 exposed outside the second through hole 113. Of course, in other embodiments, the clearance notch 114 may not be provided.

[0056] Please see Figure 2 and Figure 3 In one embodiment, optionally, the terminal assembly 200 further includes a second base 220, the second base 220 including a base plate portion 221 and a cover portion 222, the terminal 210 passing through the base plate portion 221, the cover portion 222 being disposed on the plate surface of the base plate portion 221 near the protector 100, and the edge of the second orifice being received in the inner peripheral space of the cover portion 222.

[0057] That is, the inner end of the terminal 211 passes through the substrate portion 221 and is fixedly provided with a terminal flap 212. Both the terminal flap 212 and the terminal 211 pass through the inner peripheral space of the cover portion 222 and then extend into the mounting through hole 111. The terminal flap 212 can be connected to the conductive terminal 120 or the lead terminal 310 in the mounting through hole 111. The edge of the second orifice is located on the side of the cover opening of the cover portion 222 closer to the substrate portion 221, and the edge of the second orifice and the cover portion 222 are radially opposite to each other. In this way, the probability of conductive foreign matter carried by the refrigerant approaching and adhering to the terminal 210 can be further reduced. Of course, in other embodiments, the cover portion 222 may not be provided.

[0058] The present invention also proposes a compressor, which includes a housing, a terminal assembly 200, a lead terminal assembly 300, and a protector 100. The specific structure of the protector 100 is as described in the above embodiments. Since the compressor adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0059] The housing includes a compression chamber. The terminal assembly 200 includes at least two terminals 210, one end of which extends into the compression chamber. The lead terminal assembly 300 includes at least two lead terminals 310. The protector 100 is located in the compression chamber. One conductive terminal 120 is connected to the portion of one terminal 210 inserted into the mounting through hole 111. Another conductive terminal 120 is connected to one lead terminal 310. The portions of the remaining terminals 210 inserted into the mounting through hole 111 are connected to the remaining lead terminals 310.

[0060] In one embodiment, the terminal assembly 200 further includes a second base 220, which includes a base plate portion 221 and a cover portion 222. The terminal 210 includes a terminal post 211 and a terminal flap 212. The inner end of the terminal post 211 passes through the base plate portion 221 and is fitted with the terminal flap 212. The cover portion 222 is disposed on the plate surface of the base plate portion 221 near the protector 100, and the edge of the mounting through hole 111 is at least partially accommodated in the inner peripheral space of the cover portion 222.

[0061] That is, the inner end of the terminal 211 passes through the substrate portion 221 and is fixedly provided with a terminal flap 212. Both the terminal flap 212 and the terminal 211 pass through the inner peripheral space of the cover portion 222 and then extend into the mounting through hole 111. The terminal flap 212 can be connected to the conductive terminal 120 or the lead terminal 310 in the mounting through hole 111. The edge of the second orifice is received in the inner peripheral space of the cover portion 222. That is, the edge of the second orifice is located on the side of the cover opening of the cover portion 222 closer to the substrate portion 221, and the edge of the second orifice and the cover portion 222 are arranged opposite each other in the radial direction. In this way, the probability of conductive foreign matter carried by the refrigerant approaching and adhering to the terminal 210 can be further reduced. Of course, in other embodiments, the cover portion 222 may not be provided.

[0062] Optionally, the minimum distance D between the edge of the second orifice and the surface of the substrate 221 is configured as follows: 0.1mm ≤ D ≤ 20mm. For example, the minimum distance D can be 0.2mm, 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 5mm, 7mm, 10mm, 13mm, 15mm, 17mm, or 20mm. This arrangement of a certain distance between the edge of the second orifice and the surface of the substrate 221 prevents interference between the edge of the second orifice and the substrate 221 during the installation of the terminal assembly 200 to the protector 100. On the other hand, if the minimum distance D is set too large, the size and volume of the protector 100 and the terminal assembly 200 will be larger, which is detrimental to the miniaturization design of the compressor.

[0063] Please see Figure 2 and Figure 3 In one embodiment, the terminal assembly 200 may optionally include an insulating structure 230. The terminal 210 is sealed to the substrate portion 221 via the insulating structure 230. The insulating structure 230 at least partially protrudes from the surface of the substrate portion 221 near the protector 100 and at least partially extends into the mounting through hole 111. Thus, the insulating structure 230 serves both to mount the terminal 210 to the substrate portion 221 and to provide insulation between the terminal 210 and the substrate portion 221, preventing short circuits of the terminal 210 through the substrate portion 221, especially in embodiments where the substrate portion 221 is made of a conductive material. Optionally, the insulating structure 230 may be made of glass, ceramic, or other materials with good insulating properties. Of course, in other embodiments, the insulating structure 230 may not be provided.

[0064] Optionally, the minimum distance A between the peripheral surface of the insulating structure 230 and the inner peripheral surface of the mounting through hole 111 is configured as follows: 0.05mm ≤ A ≤ 6mm. For example, the minimum distance A can be 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.1mm, 0.2mm, 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, or 3mm. This reserved distance between the peripheral surface of the insulating structure 230 and the inner peripheral surface of the mounting through hole 111 prevents interference between the insulating structure 230 and the mounting through hole 111 during the installation of the terminal assembly 200 to the protector 100. On the other hand, if the minimum distance A is set too large, it will result in a larger size and volume for the protector 100 and the terminal assembly 200, which is detrimental to the miniaturization design of the compressor.

[0065] The present invention also proposes an air conditioner, which includes the aforementioned compressor. The specific structure of the compressor is as described in the above embodiments. Since the air conditioner adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0066] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made by utilizing the contents of the present invention's description and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A protector applied to a compressor having a terminal block assembly and a lead terminal assembly, characterized in that, The terminal block assembly includes at least two terminals, the lead terminal block assembly includes at least two lead terminals, and the protector includes: The first base has at least two mounting through holes, and the inner end of the terminal block is received in the mounting through holes; The protection module includes a protection circuit and two conductive terminals electrically connected to the protection circuit. One of the conductive terminals is connected to a portion of a wiring terminal inserted into the mounting through hole, and the other conductive terminal is connected to a lead terminal. The portions of the remaining wiring terminals inserted into the mounting through hole are connected to the remaining lead terminals.

2. The protector as described in claim 1, characterized in that, The mounting through holes are provided with three holes, and the conductive terminals are provided with two holes. One conductive terminal is installed in one of the mounting through holes, and the other conductive terminal is exposed on the outer surface of the first base and connected to one of the lead terminals. The remaining mounting through holes are used for the lead terminals and the wiring terminals to be inserted together and connected to each other.

3. The protector as described in claim 2, characterized in that, The three mounting through holes include a first through hole and two second through holes disposed on opposite sides of a first direction. The distance between the two second through holes gradually increases along the first direction, and the second through holes and the first through hole are distributed sequentially along the first direction.

4. The protector as described in claim 3, characterized in that, The cross-sectional shape of the mounting through hole has a major axis and a minor axis, the major axis of the first through hole extends along the first direction, and the major axis of the second through hole extends in the first direction away from the other second through hole.

5. The protector as described in claim 4, characterized in that, The first base includes a body portion and a mounting portion. The body portion is provided with the protection circuit. The mounting portion is connected to one side of the body portion and is provided with a first through hole and a second through hole. The first through hole is provided with the conductive terminal and is located close to the body portion.

6. The protector as described in claim 5, characterized in that, The main body and the mounting part are integrally formed; And / or, the material of the first base is configured as polyester, polyphenylene sulfide, or liquid crystal polymer; And / or, one of the conductive terminals is exposed on the side of the body portion away from the mounting portion and is configured as a wing structure to be sleeved with the lead terminal configured as a flag-shaped terminal.

7. The protector as described in claim 3, characterized in that, The second through hole has a clearance notch at the edge of the opening near the first through hole. The lead terminal assembly also includes a motor lead, which passes through the clearance notch and is connected to the lead terminal.

8. A compressor, characterized in that, include: The casing contains a compression chamber; Terminal block assembly; Lead terminal assembly; as well as The protector as described in any one of claims 1 to 7, wherein the protector and the lead terminal are disposed within the compression cavity, and one end of the terminal extends into the compression cavity.

9. The compressor as claimed in claim 8, characterized in that, The mounting through hole has a first opening and a second opening opposite each other. The first opening is located away from the terminal assembly. The lead terminal is configured as a flag-shaped terminal. The terminal includes a connecting wing. The flag-shaped terminal is inserted into the mounting through hole from the first opening and is sleeved with the connecting wing inserted from the second opening.

10. The compressor as claimed in claim 9, characterized in that, The minimum distance d between the wiring wing and the wall of the mounting through hole is configured as follows: 0.5mm≤d≤5mm; And / or, the wall surface of the mounting through hole is configured as a prism surface; And / or, the terminal assembly further includes a second base, the second base including a base plate portion and a cover portion, the terminal further including a terminal post, the inner end of the terminal post passing through the base plate portion and having the terminal wing piece mounted thereon; the cover portion is disposed on the plate surface of the base plate portion near the protector, and the edge of the mounting through hole is at least partially received within the inner peripheral space of the cover portion.

11. An air conditioner, characterized in that, Includes the compressor as described in any one of claims 8 to 10.

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