Compressor and refrigeration equipment

Abstract

The invention discloses a compressor and refrigeration equipment, the compressor comprises a shell, an embedding groove is formed in the shell, and an electrode terminal is arranged in the embedding groove; the electrode terminal comprises an outer cover, and the outer cover comprises a bottom plate and a surrounding plate connected with the outer periphery of the bottom plate; the three electrodes penetrate through the bottom plate and are in insulated connection with the bottom plate; and the protective sleeve comprises three protective units, and the three protective units are respectively and correspondingly sleeved with the three electrodes. According to the technical scheme, the protective sleeves are arranged on the electrodes in the sleeving mode, so that the possibility that metal chippings generated along with flowing of refrigerants or engine oil adhere to the electrodes is reduced, the possibility that short circuits occur between the electrodes or between the electrodes and the outer cover is reduced, and the service life of the compressor is guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration equipment, and particularly to a compressor and a refrigeration equipment. Background Art

[0002] A compressor is a driven fluid machine that raises low-pressure gas to high-pressure gas. It sucks in refrigerant gas at low temperature and low pressure from the suction pipe, compresses it by driving a piston through the operation of an electric motor, and then discharges the high-temperature and high-pressure refrigerant gas to the exhaust pipe, providing power for the refrigeration cycle.

[0003] During the operation of the compressor, due to the copper shavings brought in by the refrigerant, it is easy to adhere to the electrode terminals, which may easily cause short circuits and burns of the electrode terminals, and further cause most of the electrode terminal failures. Summary of the Invention

[0004] The main object of the present invention is to propose a compressor, aiming to reduce the possibility of metal debris flowing with random oil and refrigerant sticking to the electrodes therein.

[0005] To achieve the above object, the compressor proposed by the present invention includes a housing, an embedding groove is provided on the housing, and electrode terminals are arranged in the embedding groove; wherein, the electrode terminals include:

[0006] An outer cover, the outer cover includes a bottom plate and a surrounding plate connecting the bottom plate;

[0007] Three electrodes, the three electrodes pass through the bottom plate and are insulatedly connected to the bottom plate;

[0008] A protective sleeve, the protective sleeve includes three protection units, and the three protection units are respectively sleeved on the three electrodes.

[0009] Optionally / In an embodiment, the protection unit is provided with a receiving groove for receiving the electrode; the protection unit includes two first cylinders with different lengths and a second cylinder, the two first cylinders and the second cylinder are respectively sleeved on the electrode, the second cylinder exposes the top end of the electrode, and the exposed top end of the electrode is used to connect a protector.

[0010] Optionally / In an embodiment, the three electrodes are arranged in a triangular pattern on the bottom plate.

[0011] Optionally / In an embodiment, the three protection units are integrally formed.

[0012] Optionally / In an embodiment, an avoidance opening is provided between the two first cylinders adjacent to the second cylinder, and the avoidance opening is used to avoid the protector.

[0013] Optionally / in one embodiment, a resisting portion is formed on the inner wall of the accommodating groove of the first cylinder, and the resisting portion resists the top surface of the electrode.

[0014] Optionally / in one embodiment, the abutting portion abuts against a portion of the top surface of the electrode.

[0015] Optionally / in one embodiment, a fixing portion is provided in the receiving groove, and the fixing portion is in conflict with the electrode.

[0016] Optionally / in one embodiment, a notch groove is provided on the fixing portion, and the electrode is in conflict with a groove wall of the notch groove.

[0017] Optionally / in one embodiment, the cross-section of the notch groove is arc-shaped.

[0018] Optionally / in one embodiment, a clearance groove is provided on the top of the first cylinder, and the clearance groove is used for installing the plug-in terminal.

[0019] Optionally / in one embodiment, a wire groove is provided on the top of the first cylinder, and the wire groove is used to accommodate the wires.

[0020] Optionally / in one embodiment, an insulator is provided between the electrode and the base plate, the electrode passes through the insulator to be electrically connected to the outside, and the insulator is made of at least one of glass crystal or ceramic material.

[0021] Optionally / in one embodiment, the protection unit is sleeved on the insulator.

[0022] Optionally / in one embodiment, an adapting groove is provided on a side wall of the accommodating groove, and the adapting groove is used to accommodate the insulator.

[0023] The present invention also provides a refrigeration device, which comprises the above compressor.

[0024] The technical solution of the present invention adopts a protective sleeve to be mounted on the electrode, thereby reducing the possibility of metal debris adhering to the electrode along with the flow of refrigerant or oil, thereby reducing the possibility of short circuit between electrodes or between electrodes and the outer cover, thereby ensuring the service life of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0026] Figure 1 This is a schematic cross-sectional view of the compressor of the present invention, used to show the installation position of the electrode terminal;

[0027] Figure 2 This is a schematic view of a part of the outer shell of the compressor with the electrode terminal installed;

[0028] Figure 3 This is a schematic view of a part of the outer shell of the compressor with the electrode terminal installed from another perspective;

[0029] Figure 4 This is a schematic view of the structure of the electrode and the outer cover of the electrode terminal of the present invention;

[0030] Figure 5 This is a schematic view of the structure when the protective sleeve of the electrode terminal of the present invention is sleeved on the electrode;

[0031] Figure 6 This is a schematic diagram of the structure in which two protection units are connected by connecting ribs;

[0032] Figure 7 This is a schematic diagram of the structure in which three protection units are connected by connecting ribs;

[0033] Figure 8 This is another schematic diagram of the structure in which three protection units are connected by connecting ribs;

[0034] Figure 9 This is a schematic diagram of the structure when two protection units are slidably connected;

[0035] Figure 10 This is a schematic diagram of the structure when three protection units are slidably connected;

[0036] Figure 11 This is another schematic diagram of the structure when three protection units are slidably connected;

[0037] Figure 12 This is yet another schematic diagram of the structure when three protection units are slidably connected;

[0038] Figure 13 This is a schematic diagram of the structure when two protection units are slidably buckled;

[0039] Figure 14 This is a schematic diagram of the structure when three protection units are slidably buckled;

[0040] Figure 15 This is another schematic diagram of the structure when two protection units are buckled;

[0041] Figure 16 This is another schematic diagram of the structure when three protection units are buckled;

[0042] Figure 17Schematic diagram of the structure when two protection units are magnetically attracted;

[0043] Figure 18 Schematic diagram of the structure when three protection units are magnetically attracted;

[0044] Figure 19 Schematic diagram of the structure when two protection units are connected by a connecting piece;

[0045] Figure 20 Schematic diagram of the structure when three protection units are connected by a connecting piece;

[0046] Figure 21 Schematic diagram of the structure when two protection units are rotatably connected;

[0047] Figure 22 Another schematic diagram of the structure when two protection units are rotatably connected;

[0048] Figure 23 Schematic diagram of the structure of the electrode terminal protective sleeve of the present invention;

[0049] Figure 24 Schematic diagram of the structure of the electrode terminal protective sleeve of the present invention from another perspective;

[0050] Figure 25 Schematic diagram of the structure of the electrode terminal protective sleeve of the present invention from yet another perspective;

[0051] Figure 26 Schematic diagram of the structure when the electrode terminal is directly connected to the protector;

[0052] Figure 27 Schematic diagram of the structure when the electrode terminal of the present invention is sleeved with a protective sleeve and then connected to the protector;

[0053] Figure 28 For Figure 27 Exploded schematic diagram of the structure;

[0054] Figure 29 Combined schematic diagram of the protection component proposed by the present invention.

[0055] Explanation of the reference numerals in the attached drawings:

[0056] Label Name Label Name 10 Compressor 325 Top of the first cylinder 11 Outer shell 326 Bottom of the first cylinder 12 Embedded groove 330 Second cylinder 13 Electrode terminal 331 Top of the second cylinder 100 Outer cover 340 Adapter groove 110 Bottom plate 410 Connecting rib 120 Enclosing plate 421 Sliding protrusion 130 Reinforcing rib 422 Sliding groove 140 Embedded ring 423 Positioning protrusion 200 Electrode 424 Positioning groove 210 Electrode plate 431 Snap groove 220 Insulator 432 Snap part 230 Top of the electrode 433 Snap body 300 Protective sleeve 434 Snap groove 310 Protection unit 435 Snap protrusion 311 Receiving groove 440 Connector 312 Fixing part 450 Magnet 313 Arc-shaped notch groove 461 Rotating groove 320 First cylinder 462 Rotating shaft 321 Avoidance opening 500 Electric wire 322 Contact part 510 Plug-in terminal 323 Relief groove 600 Protector 324 Wire relief groove 700 Receiving part

[0057] The realization, functional features and advantages of the object of the present invention will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0058] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0059] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) involved in the embodiments of the present invention, then such directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0060] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, then such descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or the solution where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0061] Referring to Figures 1 to 5 , the present invention provides a compressor 10. Specifically, the compressor 10 has a housing 11, and an embedding groove 12 for embedding a power supply terminal 13 is formed on the housing 11 of the compressor 10. The electrode terminal 13 can provide electrical connection for the inside and outside of the compressor 10. Since there are liquid media such as refrigerant or oil inside the compressor 10, the electrode terminal 13 is usually sealed and fixed in the embedding groove 12. Correspondingly, in order to ensure that the liquid media such as refrigerant or oil do not overflow from the electrode terminal 13, the electrode terminal 13 is generally installed in the embedding groove 12 by means of fusion welding.

[0062] In the present invention, the electrode terminal 13 includes an outer cover 100 and a plurality of electrodes 200, wherein the electrodes 200 are arranged in the outer cover 100, and the outer cover 100 is embedded in the embedding groove 12 on the shell 11 of the compressor 10; generally speaking, the outer cover 100 is generally circular and made of metal material, so that the outer cover 100 can be welded and fixed in the embedding groove 12 by melting means. Specifically, the outer cover 100 includes a bottom plate 110 and a surrounding plate 120 connected to the outer periphery of the bottom plate 110; the bottom plate 110 and the surrounding plate 120 are both made of metal material, so that the outer cover 100 can be fixed or processed as a whole by melting means.

[0063] In the present embodiment, the enclosure 120 is integrally formed on the bottom plate 110, that is, the outer cover 100 as a whole can be made by an integral forming process such as stamping; wherein, the joint between the enclosure 120 and the bottom plate 110 is chamfered to ensure that the thickness of the enclosure 120 and the bottom plate 110 are consistent, thereby ensuring the overall structural strength of the outer cover 100; it should be noted that in the present embodiment, the bottom plate 110 is arranged on one side of the enclosure 120, and taking the bottom plate 110 as a reference, in the enclosure 120, the enclosed area of ​​the enclosure 120 intercepted by the plane parallel to the bottom plate 110 gradually expands in the direction away from the bottom plate 110, that is, the projection of the enclosure 120 on the plane perpendicular to the bottom plate 110 is similar to a truncated cone, and when viewed from the direction facing the bottom plate 110, the maximum projection area of ​​the enclosure 120 is larger than the projection area of ​​the embedded groove 12; thus, the arrangement of the enclosure 120 makes it possible for the outer cover 1 When the outer cover 100 is embedded in the embedding groove 12, part of the enclosure 120 will be stuck outside the embedding groove 12, and then when the electrode terminal 13 is installed as a whole, the outer cover 100 is not easy to fall out of the embedding groove 12 due to the influence of gravity on the electrode terminal 13, which facilitates the welding operation of the electrode terminal 13; further, an embedding ring 140 can be processed on the side of the enclosure 120 away from the bottom plate 110 by stamping and other processes, and the diameter of the embedding ring 140 is larger than the diameter of the embedding groove 12, so that the outer cover 100 can be installed in the embedding groove 12 in a certain direction with the help of gravity and is not easy to fall out, thereby facilitating the welding of the outer cover 100; in addition, in order to ensure the structural strength between the enclosure 120 and the embedding ring 140, chamfering can also be used between the enclosure 120 and the embedding ring 140 to ensure a smooth transition between the two, so that the enclosure 120 and the embedding ring 140 have the same thickness.

[0064] In order to further improve the strength between the side plate 120 and the bottom plate 110, a number of reinforcing ribs 130 are provided between the bottom plate 110 and the side plate 120. The reinforcing ribs 130 are connected between the bottom plate 110 and the side plate 120, thereby improving the structural strength between the bottom plate 110 and the side plate 120. Specifically, the reinforcing ribs 130 can be strip-shaped, that is, both ends of the reinforcing ribs 130 are respectively connected to the bottom plate 110 and the side plate 120, thereby reducing the possibility of deformation of the bottom plate 110 and the side plate 120. Correspondingly, in some embodiments, the reinforcing ribs 130 can be plate-shaped. For example, the reinforcing ribs 130 can be arc-shaped plates, that is, the arc-shaped sides of the reinforcing ribs 130 are connected to the side plate 120, and one side of the reinforcing ribs 130 is connected to the bottom plate 110. Or the reinforcing ribs 130 can be triangular plates, that is, two sides of the reinforcing ribs 130 are respectively connected to the bottom plate 110 and the side plate 120. The setting of the reinforcing ribs 130 can further improve the connection strength between the side plate 120 and the bottom plate 110, thereby reducing the possibility of excessive deformation of the overall outer cover 100 during installation due to the cooperation between the side plate 120 and the embedding groove 12, and thus ensuring the stability of the overall structure and reducing the installation difficulty of the outer cover 100.

[0065] It should be noted that the above is only an explanation of the manufacturing and installation of the outer cover 100 by virtue of the circular shape of the outer cover 100. The outer cover 100 can be changed according to actual selection and design needs, that is, the specific shape of the projection of the bottom plate 110 on its parallel plane, such as geometric figures such as rectangles, squares, triangles, rhombuses, and trapezoids, or irregular figures can also be used. Moreover, processing methods such as integral forming by stamping can complete the processing of complex figures. The shapes of the side plate 120, the embedding groove 12, and the embedding ring 140 can all change with the change of the shape of the bottom plate 110. In addition, according to actual processing or design requirements, etc., the specific materials of the bottom plate 110, the side plate 120, the embedding ring 140, and the embedding groove 12 can also be selected. For example, the entire outer cover 100 can be made of insulating materials such as hard plastics to improve the insulation performance of the entire outer cover 100.

[0066] The electrode 200 is provided on the bottom plate 110. Specifically, the electrode 200 passes through the bottom plate 110 and is insulated from the bottom plate 110, that is, the bottom plate 110 provides support and fixation for the electrode 200 while being insulated from the electrode 200. It should be noted that the number of electrodes 200 can be set according to actual usage requirements. Further, multiple electrode terminals 13 can be provided on the outer shell 11 of the compressor 10 according to the number of electrodes 200 designed on the bottom plate 110.

[0067] In this embodiment, the number of electrodes 200 can be one, two, or more. When there are multiple electrodes 200, the multiple electrodes 200 can be arranged on the same straight line, or adjacent two electrodes 200 can be on the same straight line. When the outer cover 100 is made of a metal material, in order to reduce the possibility of electricity conduction between the electrode 200 and the outer cover 100, an insulator 220 is provided between the electrode 200 and the bottom plate 110, and the electrode 200 passes through the insulator 220 to be electrically connected to the outside, that is, the electrode 200 conducts electricity inside and outside the compressor 10. The setting of the insulator 220 reduces the possibility of electricity conduction between the electrode 200 and the outer cover 100, that is, reduces the possibility that the metal debris adhering to the electrode 200 with the refrigerant or oil conducts the outer cover 100.

[0068] Correspondingly, the insulator 220 is made of an insulating material. In order to cope with the high temperature that may be generated when the electrode 200 conducts electricity, the insulator 220 preferably uses glass crystal or ceramic materials. For example, the insulator 220 can be made of glass crystal, or the insulator 220 is made by embedding two materials of glass crystal and ceramic, or the insulator 220 is made of ceramic materials. Glass crystal and ceramic have excellent insulation performance and heat resistance, and are inexpensive. Therefore, the insulator 220 made of glass crystal or ceramic has excellent insulation performance and heat resistance while having a relatively low cost. It should be noted that the insulator 220 can also be made of materials such as heat-resistant plastics to ensure good insulation performance and good heat resistance at the same time.

[0069] In this embodiment, in order to reduce the possibility that the metal debris coming with the refrigerant or oil is deposited on the electrode 200, resulting in a short circuit between the electrodes 200, a protective sleeve 300 is sleeved on the electrode 200 in this embodiment. The setting of the protective sleeve 300 reduces the possibility that the metal debris is deposited on the electrode 200, thereby reducing the possibility of a short circuit between the electrodes 200 and ensuring the service life of the electrode terminal 13.

[0070] Specifically, the protective sleeve 300 includes a plurality of protection units 310, and the number of the protection units 310 corresponds to the number of the electrodes 200. Each protection unit 310 is made of an insulating material.

[0071] When there is only one electrode 200, the protective sleeve 300 is a single protection unit 310. It should be noted that the protection unit 310 is sleeved on the electrode 200, thereby reducing the possibility that the metal debris adheres to the electrode 200, that is, the setting of the protective sleeve 300 further reduces the possibility of a short circuit between the electrode 200 and the outer cover 100 and ensures the service life of the electrode terminal 13.

[0072] Moreover, when there is only one electrode 200 on the electrode terminal 13, the number of electrode terminals 13 and their distribution positions on the housing of the compressor 10 can be selected according to the specific design requirements of the compressor 10, and it is not limited to only one electrode terminal 13 being provided on the compressor 10. For example, in a general circuit setup, the compressor 10 will have a ground wire, a live wire, and a neutral wire; therefore, three electrode terminals 13 can be provided on the outer housing 11 of the compressor 10, and protective sleeves 300 (single protection units 310) are sleeved on the electrodes 200 of the three electrode terminals 13, and the three electrode terminals 13 are respectively connected to the ground wire, the live wire, and the neutral wire.

[0073] When there are two electrodes 200 provided on the base plate 110, the number of protection units 310 is also two; the two protection units 310 jointly form the protective sleeve 300; among them, the two protection units 310 can exist independently or as a whole; it should be noted that when two electrodes 200 are provided on the base plate 110, the number of electrode terminals 13 can be selected according to actual usage needs. The electrode terminal 13 here can be an electrode terminal 13 with two electrodes 200 or the electrode terminal 13 with one electrode 200 mentioned in the above description, and all can be changed and set accordingly according to the specific design requirements of the compressor 10.

[0074] When the protection units 310 exist independently, the two protection units 310 are respectively sleeved on the two electrodes 200; when refrigerant or oil passes through the area where the electrodes 200 are provided, the refrigerant or oil may carry debris generated from other metal parts of the compressor 10, such as copper chips in the refrigerant pipeline; when the metal debris adheres to the protection unit 310, the protection unit 310 will use its insulating property to prevent the metal debris from directly adhering to the electrodes 200, thereby reducing the possibility of a short circuit occurring between the two electrodes 200 due to the conduction of the metal debris.

[0075] In other embodiments of the present invention, the two protection units 310 can also be connected to each other; it should be noted that whether the adjacent two protection units 310 are connected and their connection relationship do not affect the isolation effect of the protection unit 310 on the metal debris; the connection of the adjacent two protection units 310 will improve the integrity of the protective sleeve 300, thereby improving the integrity of the entire electrode terminal 13, and further simplifying the production process of the electrode terminal 13 to a certain extent.

[0076] There are various connection methods for the adjacent two protection units 310;

[0077] For example, the adjacent two protection units 310 are fixedly connected.

[0078] Refer to Figures 6 to 8, in an embodiment of the present invention, a connecting rib 410 is provided between two adjacent protection units 310; the number of the connecting ribs 410 can be one or multiple, and can be specifically selected according to the connection strength requirements between the protection units 310; the shape of the connecting rib 410 can be strip-shaped, that is, both ends of the connecting rib 410 are respectively connected to the two protection units 310; the connecting rib 410 can also be made into a plate shape, that is, the opposite sides of the connecting rib 410 are respectively connected to the two protection units 310; taking the front view direction of the connecting rib 410 as a reference, the connecting rib 410 can also be in the shape of a regular figure such as a hexagon, and the two protection units 310 are respectively connected to the opposite sides or two sides of the connecting rib 410.

[0079] It should be noted that the specific shape setting and quantity setting of the connecting rib 410 can be selected according to needs; for another example, the projection of the connecting rib 410 in the front view direction can be a regular figure such as a rectangle or a square, or an irregular figure; the number of the connecting ribs 410 can be one, two, three, four, etc., and can be selected according to the actual situation; during installation, the two protection units 310 can be installed as a whole, that is, the two protection units 310 are respectively sleeved on the two electrodes 200 at the same time.

[0080] In another embodiment of the present invention, when the two protection units 310 are respectively sleeved on the two electrodes 200, they are glued to each other; among them, they can be pre-glued when the two protection units 310 are sleeved on the electrode 200, or they can be glued after the two protection units 310 are sleeved on the electrode 200; it should be noted that the type of glue used for gluing is not limited, as long as it has good stability in the refrigerant or engine oil; in addition, hot melt glue can also be used to bond the two protection units 310, that is, the two protection units 310 can be glued together in advance using hot melt glue.

[0081] When the protection unit 310 is made of a thermoplastic material such as rubber or plastic, the characteristics of its own material can also be used for gluing; that is, the contact surfaces of the two protection units 310 are welded by heating, so as to complete the gluing between the two protection units 310. This gluing method using the characteristics of the material of the protection unit 310 itself can be completed before the protection unit 310 is sleeved on the electrode 200, or can be completed after the protection unit 310 is sleeved on the electrode 200, and can be selected according to the actual production and processing process.

[0082] In yet another embodiment of the present invention, the two protection units 310 are integrally formed, so that the two protection units 310 directly form the protective cover 300, without the need to establish a connection relationship between the two protection units 310 through other structures. Among them, the size of the protection unit 310 and the overall size of the protective cover 300 formed by the two protection units 310 can be designed in advance according to the distance between the two electrodes 200 located on the same bottom plate 110. Thus, when manufacturing the protective cover 300, the two protection units 310 can be integrally formed according to the pre-obtained design dimensions; specifically, when the protective cover 300 is made of a material such as plastic, the injection molding process or other integral molding processes can be used to produce the protective cover 300, thereby completing the integral molding setting between the two protection units 310.

[0083] For another example, the two adjacent protection units 310 are detachably connected.

[0084] Referring to Figures 9 to 12 , in an embodiment of the present invention, the two adjacent protection units 310 are combined into the protective cover 300 by means of a sliding connection; specifically, a sliding protrusion 421 can be provided on one side of a protection unit 310 along its length direction, and a sliding groove 422 can be provided on the other protection unit 310 along its length direction, and the sliding protrusion 421 and the sliding groove 422 are made to cooperate with each other, thereby completing the connection between the two protection units 310; further optimization can also be carried out on the basis of the sliding protrusion 421 and the sliding groove 422; for example, positioning protrusions 423 can be provided on the two opposite sides of the sliding protrusion 421, and positioning grooves 424 can be provided on the two opposite side walls of the sliding groove 422, that is, when the sliding protrusion 421 is inserted into the sliding groove 422, the positioning protrusions 423 are also inserted into the positioning grooves 424, and the positioning protrusions 423 slide in the positioning grooves 424 as the sliding protrusion 421 slides in the sliding groove 422; the positioning protrusions 423 can also be provided on one side wall of the sliding groove 422, and positioning grooves 424 adapted to the positioning protrusions 423 are provided on the sliding protrusion 421, and when the sliding protrusion 421 slides in the sliding groove 422, the positioning protrusions 423 also slide in the positioning grooves 424.

[0085] In addition, the cooperation between the positioning protrusion 423 and the positioning groove 424 can be utilized to further improve the connection tightness between the two protection units 310. For example, the positioning protrusion 423 can be in interference fit with the positioning groove 424. The positioning protrusion 423 and the positioning groove 424 can be respectively arranged at the tops of the sliding protrusion 421 and the sliding groove 422. As the sliding protrusion 421 slides in the sliding groove 422, the positioning protrusion 423 will gradually be embedded into the positioning groove 424, thereby completing the interference fit between the two, and further improving the connection tightness between the two protection units 310. It should be further noted that with reference to the sliding direction between the protection units 310, the cross-sectional area of the positioning groove 424 can be fixed while the cross-sectional area of the positioning protrusion 423 gradually increases along the sliding direction, or the cross-sectional area of the positioning protrusion 423 can be fixed while the cross-sectional area of the positioning groove 424 gradually decreases along the sliding direction. Additionally, the cross-sectional area of the positioning groove 424 can be made smaller than that of the positioning protrusion 423.

[0086] It should be further noted that the specific numbers of the sliding protrusion 421 and the sliding groove 422, as well as the positioning protrusion 423 and the positioning groove 424, can be selected according to actual installation strength requirements and other factors. For example, positioning protrusions 423 are arranged on both opposite sides of the sliding protrusion 421, and positioning grooves 424 are arranged on both opposite side walls of the sliding groove 422; or two sliding protrusions 421 are arranged on one protection unit 310, and two sliding grooves 422 are arranged on the other protection unit 310. The number of the sliding protrusions 421 can be three, four, or even more, and the number of the sliding grooves 422 can be the same as that of the sliding protrusions 421. The number of the positioning protrusions 423 can be three, four, or even more, and the number of the positioning grooves 424 can also be the same as that of the positioning protrusions 423.

[0087] The number of the sliding protrusions 421 and the number of the sliding grooves 422 do not necessarily need to be equal. For example, only one sliding protrusion 421 is provided on one protection unit 310, while multiple sliding grooves 422 are provided on another protection unit 310. It is possible to select to slide the sliding protrusion 421 into a certain sliding groove 422 according to the relative position between the two electrodes 200; it is also possible to swap them. For example, only one sliding groove 422 is provided on one protection unit 310, while multiple sliding protrusions 421 are provided on another protection unit 310. It is possible to select to slide a certain sliding protrusion 421 into the sliding groove 422 according to the relative position between the two electrodes 200. Additionally, the number of the sliding protrusions 421 on one protection unit 310 can be set to two, and the number of the sliding grooves 422 on another protection unit 310 can be set to three, and the distance between the two sliding protrusions 421 is equal to the distance between two adjacent sliding grooves 422, that is, the two sliding protrusions 421 can select any two adjacent sliding grooves 422 to slide into. Similarly, the number of the sliding protrusions 421 can be three, four, or even more; the number of the sliding grooves 422 can also be two, three, four, or even more.

[0088] According to the above description, the cooperation between the positioning protrusions 423 and the positioning grooves 424 can also be one-to-many, many-to-one, or even many-to-many. For example, one positioning protrusion 423 corresponds to two, three, or even more positioning grooves 424; one positioning groove 424 corresponds to two, three, or even more positioning protrusions 423; multiple positioning grooves 424 correspond to multiple positioning protrusions 423, and the number of the positioning grooves 424 and the positioning protrusions 423 is not necessarily the same.

[0089] It should be further noted that if the protection unit 310 is made of a relatively soft material, that is, after the protection unit 310 is sleeved on the electrode 200, it can still rotate around the electrode 200 within a certain range. It is also possible to make the length directions of the above-mentioned sliding protrusions 421 and sliding grooves 422, positioning protrusions 423 and positioning grooves 424 perpendicular to the length direction of the protection unit 310. At this time, during installation, first sleeve the protection unit 310 on the electrode 200, and then slightly rotate it so that the sliding protrusions 421 are engaged with the sliding grooves 422, and the positioning protrusions 423 are engaged with the positioning grooves 424; or utilize the deformation ability of the protection unit 310 to make the length directions of the above-mentioned sliding protrusions 421 and sliding grooves 422, positioning protrusions 423 and positioning grooves 424 inclined to the length direction of the protection unit 310, that is, when sleeving the protection unit 310 on the electrode 200, first deform the protection unit 310, so that the moving protrusions are engaged with the sliding grooves 422, and the positioning protrusions 423 are engaged with the positioning grooves 424, thereby completing the connection between the two protection units 310.

[0090] Refer to Figures 13 to 16, in another embodiment of the present invention, the two protection units 310 are snap-connected to form a protective sleeve 300; specifically, a snap groove 431 may be formed by recessing on one protection unit 310, and a snap portion 432 may be formed by protruding on the other protection unit 310. When the two protection units 310 are respectively sleeved on the electrode 200, the snap portion 432 will be embedded in the snap groove 431; it should be noted that if a relatively high connection strength is required between the two protection units 310, the snap portion 432 should be in interference fit with the snap groove 431 to ensure the connection stability between the two protection units 310; if the required connection strength between the two protection units 310 is relatively low, the snap portion 432 can be made to fit the snap groove 431, or the snap portion 432 can be made to swing in the snap groove 431 after being engaged with the snap groove 431, all depending on the actual use and design requirements.

[0091] However, there are other implementation forms for the snap connection method of the two protection units 310; for example, one side of one protection unit 310 extends and bends to form a snap body 433, and the other protection unit 310 is integrally embedded in the snap body 433, which can be understood as one protection unit 310 being snap-connected to the part formed by the extension of the other protection unit 310; for another example, snap portions 432 are formed by extension on both of the two protection units 310, but a snap groove 434 is provided on the snap portion 432 of one protection unit 310, and a snap protrusion 435 is provided on the snap portion 432 of the other protection unit 310. When the two protection units 310 are respectively sleeved on the two electrodes 200, the snap protrusion 435 will cooperate with the snap groove 434 to complete the connection between the two protection units 310; the specific setting of the snap portion 432 can be determined according to the actual use requirements, that is, the number of snap grooves 434 and the number of snap protrusions 435 can vary according to the actual use requirements, and the numbers of the two do not need to be equal; for example, one snap groove 434 corresponds to multiple snap protrusions 435, or one snap protrusion 435 corresponds to multiple snap grooves 434, or 3 snap protrusions 435 correspond to 5 snap grooves 434, and vice versa; but it should be noted that since there is a possibility that multiple snap grooves 434 correspond to multiple snap protrusions 435 and the numbers of the two are not equal, it is necessary to reasonably set the distances between the snap grooves 434 and between the snap protrusions 435 to avoid deviation and prevent the snap connection between the two protection units 310 from being completed.

[0092] It should be noted that when multiple buckling grooves 434 correspond to multiple buckling protrusions 435, there are various design possibilities for the spacing between the buckling grooves 434 and between the buckling protrusions 435; for example, 5 buckling grooves 434 correspond to 2 buckling protrusions 435. In this case, when both of the 2 buckling protrusions 435 can be correspondingly buckled with the buckling grooves 434, the total length of the 2 buckling protrusions 435 and their spacing can be made equal to the total length of 3 buckling grooves 434 and their spacing, that is, when the 2 buckling protrusions 435 are combined with the buckling grooves 434, there must be a buckling groove 434 between the 2 buckling protrusions 435. Thus, the cooperation between the buckling protrusions 435 and the buckling grooves 434 can be selected according to the actual sleeving situation of the electrode 200.

[0093] Referring Figure 17 and Figure 18 , in another embodiment of the present invention, the two protection units 310 can be connected by magnetic attraction; specifically, magnets 450 can be respectively arranged on the two protection units 310, and the two magnets 450 can attract each other when the two protection units 310 are sleeved on the electrode 200. Thus, when the two protection units 310 are respectively sleeved on the two electrodes 200, the two magnets 450 will attract each other, causing the two protection units 310 to be closely attached together under the influence of the magnetic force, thereby completing the connection between the two protection units 310.

[0094] Correspondingly, one to multiple magnets 450 can be arranged on the protection unit 310, and the magnetic poles of each magnet 450 can be set according to actual usage requirements; for example, two magnets 450 are respectively arranged on each of the two protection units 310. The two magnets 450 on a single protection unit 310 have opposite magnetic poles, while the magnetic poles of the magnets 450 on the two protection units 310 correspond one by one; for a simple example, one protection unit 310 has a magnet 450 arranged at each of its upper and lower ends. The upper magnet 450 is an s pole, and the lower magnet 450 is an n pole; while the other protection unit 310 also has magnets 450 arranged at its upper and lower ends, but the upper magnet 450 of this protection unit 310 is an n pole, and the lower magnet 450 is an s pole. Therefore, when the two protection units 310 approach each other, they will be closely attached together under the action of the magnets 450 and cannot be reversed end to end; for another example, multiple magnets 450 can be arranged on one protection unit 310, and multiple magnets 450 can also be arranged on the other protection unit 310. The number of them does not necessarily need to be equal, but the magnets 450 between them are all of opposite poles, so that they can attract each other; the corresponding positions between each magnet 450 can be selected according to actual usage requirements, thereby completing the connection between the protection units 310.

[0095] Referring Figure 19 and Figure 20, in another embodiment of the present invention, the two protection units 310 can be connected by other additionally provided connecting members 440; for example, an "I"-shaped connecting member 440 is provided between the two protection units 310. The connecting member 440 has a columnar main body, and mounting grooves are formed on both opposite sides of the main body to form an "I" shape; and the two protection units 310 are respectively embedded in the two mounting grooves, thereby completing the connection of the two protection units 310.

[0096] It should be noted that the setting of the connecting member 440 is not limited to the above form; the connecting member 440 can be a connecting ring. Connecting grooves for the connecting ring to be embedded can be opened on the outer sides of the two protection units 310. The connecting ring itself has a certain elasticity, so that the connecting ring can be sleeved on the two protection units 310, and then the connection of the two protection units 310 is completed by using the elasticity of the connecting ring itself; the connecting member 440 can also be a connecting rod, and connecting grooves for the ends of the connecting rod to be embedded are opened on the outer sides of the two protection units 310. The connecting rod is embedded in the connecting groove, thereby completing the connection of the two protection units 310.

[0097] For another example, the two adjacent protection units 310 are movably connected.

[0098] Refer to Figure 21 and Figure 22 , in an embodiment of the present invention, the two protection units 310 are rotatably connected; for example, a rotating groove 461 is provided on one protection unit 310, and a rotating shaft 462 is provided on the other protection unit 310. When the two protection units 310 are sleeved on the electrode 200, the rotating shaft 462 is inserted into the rotating groove 461, and the rotating shaft 462 can rotate in the rotating groove 461, thereby completing the rotational connection between the two protection units 310; it should be noted that in some extremely special cases, a hinge can be used to complete the rotational connection between the two protection units 310, but the hinge is generally made of an insulating material.

[0099] In addition, in addition to using the cooperation between the rotating shaft 462 and the rotating groove 461 to complete the rotational connection between the two protection units 310, other forms can also be used to complete the relative rotation between the two protection units 310; for example, a rotating groove 461 is formed by extending the outer side of the protection unit 310, and the other protection unit 310 is rotatably connected in the rotating groove 461, thereby completing the connection between the two protection units 310.

[0100] On the basis above, when the number of electrodes 200 is three or more, the number of protection units 310 of the protective sleeve 300 is correspondingly three or more; the connection method provided in the above description can be adopted between any three or more protection units 310, but corresponding changes can be made due to the increase in the number of protection units 310. Hereinafter, three protection units 310 will be taken as an example for specific illustration.

[0101] First, when the three electrodes 200 are all arranged on the same straight line:

[0102] Referring to Figures 6 to 8 , if the three protection units 310 are fixedly connected, connection ribs 410 can be arranged between two adjacent protection units 310. The number of connection ribs 410 can be one or multiple, and can be specifically selected according to the connection strength requirement between two adjacent protection units 310; the shape of the connection ribs 410 can be strip-shaped, that is, both ends of the connection ribs 410 are respectively connected to two adjacent protection units 310; the connection ribs 410 can also be made into a plate shape, that is, the opposite sides of the connection ribs 410 are respectively connected to two adjacent protection units 310; taking the front view direction of the connection ribs 410 as a reference, the connection ribs 410 can also be in the shape of a regular figure such as a hexagon, and two adjacent protection units 310 are respectively connected to opposite sides or both sides of the connection ribs 410; the projection of the connection ribs 410 in the front view direction can be a regular figure such as a rectangle or a square, or an irregular figure; the number of connection ribs 410 can be one, two, three or four, etc., and can be selected according to the actual situation; during installation, the three protection units 310 can be installed as a whole, that is, the three protection units 310 are respectively sleeved on the three electrodes 200 at the same time. The protection units 310 can also be connected by gluing, that is, two adjacent protection units 310 are connected by gluing; among them, it can be pre-glued when two adjacent protection units 310 are sleeved on the electrode 200, or can be glued after two adjacent protection units 310 are sleeved on the electrode 200; it should be noted that the type of glue used during gluing is not limited, as long as it has good stability in refrigerant or engine oil; in addition, hot melt glue can also be used to bond the two protection units 310, that is, hot melt glue can be used in advance to bond two adjacent protection units 310 together; when the protection units 310 are made of thermoplastic materials such as rubber or plastic, gluing can also be carried out by using the characteristics of the material itself; that is, by heating, the contact surfaces of two adjacent protection units 310 are welded to complete the gluing between two adjacent protection units 310.

[0103] In the present invention, preferably, three protection units 310 are integrally formed into the overall protective sleeve 300, that is, the three protection units 310 are directly integrally formed and fixed to each other without establishing a connection relationship between the three protection units 310 through other structures; similarly, the size of a single protection unit 310 and the size of the overall protective sleeve 300 can be designed in advance according to the spacing between the three electrodes 200, and then the protective sleeve 300 is produced and processed by using an integral forming process; for example, when the protective sleeve 300 is made of plastic, an injection molding process is used to produce the protective sleeve 300, thereby obtaining an integral protective sleeve 300.

[0104] Referring to Figures 9 to 12 , and when the three protection units 310 are detachably connected, referring to the above description of the sliding connection in two adjacent protection units 310, sliding grooves 422 and sliding protrusions 421 can be respectively provided on the opposite sides of the protection unit 310, that is, the sliding groove 422 of this protection unit 310 is adapted to the sliding protrusion 421 of a protection unit 310, and the sliding protrusion 421 of this protection unit 310 is adapted to the sliding groove 422 of another protection unit 310, thereby completing the sliding connection between the three protection units 310; and according to the above description of the sliding connection in two adjacent protection units 310, the settings of the positioning protrusion 423 and the positioning groove 424 can also be modified accordingly; for example, a positioning groove 424 is provided in the sliding groove 422 of the protection unit 310, a positioning protrusion 423 is provided on the sliding protrusion 421 of this protection unit 310, the positioning protrusion 423 of a protection unit 310 is embedded into the positioning groove 424 of another protection unit 310, and then the positioning protrusion 423 of another protection unit 310 is embedded into the positioning groove 424 of this protection unit 310; the specific cooperation relationship, position, quantity, shape, etc. changes of the sliding protrusion 421, the sliding groove 422, the positioning protrusion 423 and the positioning groove 424 can all refer to the above description of the sliding connection in two adjacent protection units 310.

[0105] Referring to Figures 13 to 16, referring to the above description of the snap connection between the two protection units 310, a snap groove 431 and a snap portion 432 can be respectively provided on the opposite sides of the protection unit 310; for example, when the snap portion 432 of one protection unit 310 is snapped into the snap groove 431 of another protection unit 310, the snap portion 432 of yet another protection unit 310 is snapped into the snap groove 431 of this protection unit 310; it is also possible to extend and bend the opposite sides of one of the three protection units 310 to form a snap body 433, and the other two protection units 310 are respectively inserted into the snap bodies 433 on both sides of this protection unit 310; it is also possible that two of the three protection units 310 are formed with snap bodies 433, a protection unit 310 with a snap body 433 is inserted into the snap body 433 of another protection unit 310, and yet another protection unit 310 is inserted into the snap body 433 of this protection unit 310; alternatively, a snap portion 432 can be formed to extend on the protection unit 310, and a snap groove 434 or a snap protrusion 435 is formed on the snap portion 432, thereby completing the snap connection; the quantity and corresponding setting between the snap groove 434 and the snap protrusion 435 can both refer to the above description of the snap connection between the two protection units 310.

[0106] Referring to Figure 17 and Figure 18 , referring to the above description of the magnetic attraction between the two protection units 310, magnets 450 can be provided on the opposite sides of each protection unit 310, and the magnetic poles of the magnets 450 on both sides face the same direction, that is, the outward-facing direction of one magnet 450 is the N pole, and the outward-facing direction of the other magnet 450 is the S pole. Since the two magnets 450 are located on the opposite sides of the protection unit 310, when the magnetic poles of the two magnets 450 face the same direction, the magnetic poles shown by the two magnets 450 on the opposite sides of the protection unit 310 are opposite; thus, the three protection units 310 can be combined in pairs to complete the connection; and the specific quantity and setting position of the magnets 450 on each protection unit 310 can be reasonably changed with reference to the above description of the magnetic attraction between the two protection units 310.

[0107] Referring to Figure 19 and Figure 20, referring to the above description of the connecting member 440, between the three protection units 310, two connecting members 440 can be provided. That is, an "I"-shaped connecting member 440 is provided between two adjacent protection units 310. The connecting member 440 has a columnar main body, and installation grooves are formed on both opposite sides of the main body to form an "I" shape; the two protection units 310 are respectively embedded in the two installation grooves; it should be noted that among the three protection units 310, the middle protection unit 310 is simultaneously embedded in the installation grooves of the two connecting members 440, that is, the opposite installation grooves of the two connecting members 440 will surround the middle protection unit 310, thereby completing the connection of the three protection units 310.

[0108] The specific setting of the connecting member 440 is not limited to the above form. The connecting member 440 can be provided with three installation grooves, and the three protection units 310 are respectively and simultaneously embedded into the three installation grooves of the connecting member 440; the connecting member 440 can also be a connecting ring, and connection grooves for the connecting ring to be embedded can be opened on the outer sides of the three protection units 310. The connecting ring itself has a certain elasticity, so that the connecting ring can be sleeved on the three protection units 310, and then the connection of the three protection units 310 is completed by using the elasticity of the connecting ring itself; the connecting member 440 can also be a connecting rod, and connection grooves for the ends of the connecting rod to be embedded are opened on the outer sides of the three protection units 310. Two connecting rods are respectively embedded into the connection grooves on two adjacent protection units 310, thereby completing the connection of the three protection units 310.

[0109] Refer to Figure 21 and Figure 22 , when the three protection units 310 are movably connected, referring to the above description of the rotational connection between two protection units 310, rotation grooves 461 and rotation shafts 462 are respectively provided on both sides of each protection unit 310. When the rotation shaft 462 of one protection unit 310 is embedded into the rotation groove 461 of another protection unit 310, the rotation shaft 462 of another protection unit 310 will be embedded into the rotation groove 461 of this protection unit 310, thereby completing the rotational connection between the three protection units 310; correspondingly, it is also possible to simultaneously provide rotation shafts 462 on both sides of the middle protection unit 310, and rotation grooves 461 are provided on the sides of the other two protection units 310 facing this protection unit 310; it is also possible to simultaneously provide rotation grooves 461 on both sides of the middle protection unit 310, and rotation shafts 462 are provided on the sides of the other two protection units 310 facing this protection unit 310, all of which can complete the rotational connection between the three protection units 310.

[0110] It should be noted that other forms can also be used to achieve the relative rotation between the three protection units 310. For example, rotation grooves 461 are formed by extending from the opposite sides of the middle protection unit 310, and the other two protection units 310 are respectively rotatably connected in the two rotation grooves 461, thereby completing the rotational connection between the three protection units 310.

[0111] The above are examples of the connection methods between the protection units 310 when the number of electrodes 200 is three. Without violating the principle, corresponding changes can be made to each example to complete the connection between the protection units 310. This embodiment will not be elaborated further, but the unrecorded changes should also be regarded as within the scope recorded and disclosed in this embodiment. In addition, when the number of electrodes 200 is greater than three and multiple electrodes 200 are arranged on the same straight line, the connection methods between the protection units 310 can be correspondingly changed with reference to the above examples. Without violating and changing the relevant principles, each change should also be regarded as within the scope recorded and disclosed in this embodiment.

[0112] Secondly, when the three electrodes 200 are distributed in a triangle, or when the three electrodes 200 are arranged in a "pin" shape;

[0113] If the three protection units 310 are fixedly connected, then two of the three protection units 310 are adjacent to each other. Referring to the above description of the fixed connection between the three protection units 310, refer to Figures 6 to 9, first, a connecting rib 410 can be arranged between two adjacent protection units 310. The number of the connecting ribs 410 can be one or multiple, and can be specifically selected according to the connection strength requirement between two adjacent protection units 310. The shape of the connecting rib 410 can be strip-shaped, that is, both ends of the connecting rib 410 are respectively connected to two adjacent protection units 310. The connecting rib 410 can also be made into a plate shape, that is, two opposite sides of the connecting rib 410 are respectively connected to two adjacent protection units 310. Taking the front view direction of the connecting rib 410 as a reference, the connecting rib 410 can also be in the shape of a regular figure such as a hexagon, and two adjacent protection units 310 are respectively connected to two opposite sides or two sides of the connecting rib 410. The projection of the connecting rib 410 in the front view direction can be a regular figure such as a rectangle or a square, or an irregular figure. The number of the connecting ribs 410 can be one, two, three, four, etc., and can be selected according to the actual situation. During installation, three protection units 310 can be installed as a whole, that is, the three protection units 310 are respectively sleeved on three electrodes 200 at the same time. Combining the above description, the projection of the connecting rib 410 can also be a regular figure such as a triangle or a pentagon, that is, the connecting rib 410 connects three protection units 310 at the same time. Taking the projection of the connecting rib 410 as a triangle as an example, the connecting rib 410 can be in the shape of a triangular plate, a triangular pyramid or a triangular prism. When the connecting rib 410 is in the shape of a triangular plate, the connecting rib 410 has three side walls, and the three side walls are respectively connected to the outer walls of the three protection units 310. When the connecting rib 410 is a triangular pyramid, the three protection units 310 can be respectively connected to three sides of the bottom surface of the connecting rib 410. When the connecting rib 410 is a triangular prism, the connecting rib 410 has three side walls, and the three protection units 310 are respectively connected to the three side walls. The above is an example description of the connecting rib 410.

[0114] Or, the three protection units 310 can be connected by an adhesive bonding method, that is, two adjacent protection units 310 are connected by an adhesive bonding method. Among them, it can be pre-bonded when two adjacent protection units 310 are sleeved on the electrode 200, or can be bonded after two adjacent protection units 310 are sleeved on the electrode 200. It should be noted that the type of glue used during adhesive bonding is not limited, as long as it has good stability in the refrigerant or engine oil. In addition, a hot melt adhesive can also be used to bond the two protection units 310, that is, the adjacent two protection units 310 can be pre-bonded together with the hot melt adhesive. When the protection unit 310 is made of a thermoplastic material such as rubber or plastic, the adhesive bonding can also be carried out by using the characteristics of its own material, that is, by heating, the contact surfaces of two adjacent protection units 310 are fused, so as to complete the adhesive bonding between two adjacent protection units 310. It should be noted that the shape of the protection unit 310 can be reasonably set so that the three protection units 310 form a whole after bonding.

[0115] Moreover, in the present invention, the three protection units 310 can be integrally formed into the overall protective sleeve 300, that is, the three protection units 310 are directly integrally formed and fixed to each other without establishing the connection relationship between the three protection units 310 through other structures; it should be noted that when the three electrodes 200 are arranged in a triangle, it is a preferable solution to manufacture the protective sleeve 300 by an integral forming method, which can effectively reduce the assembly steps and assembly difficulty.

[0116] When the three protection units 310 are detachably connected, refer to Figures 9 to 12 and the above description of the sliding connection in the three protection units 310. Considering the limitation of the overall shape of the protection unit 310 brought by the arrangement of the three electrodes 200, the protection unit 310 can be initially planned as a solid with two sides, such as a triangular prism, a quadrangular prism, a pentagonal prism and other prisms, or other shaped solids; and sliding grooves 422 and sliding protrusions 421 are respectively arranged on the two adjacent sides of one protection unit 310 and the other two protection units 310, that is, the sliding groove 422 of this protection unit 310 is adapted to the sliding protrusion 421 of one protection unit 310, and the sliding protrusion 421 of this protection unit 310 is adapted to the sliding groove 422 of the other protection unit 310, so as to complete the sliding connection between the three protection units 310; and according to the above description of the sliding connection in the three protection units 310, the settings of the positioning protrusion 423 and the positioning groove 424 can also be modified accordingly; for example, a positioning groove 424 is arranged in the sliding groove 422 of the protection unit 310, a positioning protrusion 423 is arranged on the sliding protrusion 421 of this protection unit 310, the positioning protrusion 423 of one protection unit 310 is embedded into the positioning groove 424 of the other protection unit 310, and then the positioning protrusion 423 of the other protection unit 310 is embedded into the positioning groove 424 of this protection unit 310; the specific cooperation relationship, position, quantity and shape transformation of the sliding protrusion 421, the sliding groove 422, the positioning protrusion 423 and the positioning groove 424 can all refer to the above description of the sliding connection in the three protection units 310; it should be noted that further considering the influence of the arrangement of the three electrodes 200 on the overall shape of the protection unit 310, it is also possible that only a sliding groove 422 is provided on one protection unit 310, and sliding protrusions 421 are arranged on the sides of the other two protection units 310 adjacent to this protection unit 310, and vice versa. The positioning protrusion 423 and the positioning groove 424 can also be arranged with one on one protection unit 310 and the other on the other two protection units 310; further, they can also be separately set to form various combinations, and various changes can be made without changing the principle and without violating common sense.

[0117] Referring to the above description of the buckling between the three protection units 310 and combining with Figures 13 to 16 , a buckling groove 431 and a buckling portion 432 can be respectively arranged on two adjacent sides of one protection unit 310 and the other two protection units 310; for example, when the buckling portion 432 of one protection unit 310 is buckled into the buckling groove 431 of another protection unit 310, the buckling portion 432 of yet another protection unit 310 is buckled into the buckling groove 431 of this protection unit 310; it is also possible to extend and bend one of the three protection units 310 to form a buckling body 433 on two adjacent sides of the other two protection units 310, and the other two protection units 310 are respectively embedded into the buckling bodies 433 on both sides of this protection unit 310; it is also possible that two of the three protection units 310 form buckling bodies 433, and the other protection unit 310 is simultaneously embedded into the buckling bodies 433 of the two protection units 310; additionally, it is possible to make the protection unit 310 extend to form a buckling portion 432, and a buckling groove 434 or a buckling protrusion 435 is formed on the buckling portion 432, thereby completing the buckling; further considering the influence of the arrangement of the three electrodes 200 on the overall shape of the protection unit 310, various changes can be made to the quantity and corresponding setting between the buckling groove 434 and the buckling protrusion 435 without changing the principle and without violating common sense.

[0118] Referring to the above description of the magnetic attraction between the three protection units 310 and combining with Figure 17 and Figure 18 , magnets 450 can be arranged on two adjacent sides of each protection unit 310 and the other two protection units 310, and the magnetic poles shown by the magnets 450 on both sides to the outside are opposite, that is, the orientation of one magnet 450 to the outside is the n pole, and the orientation of the other magnet 450 to the outside is the s pole. Since the two magnets 450 are located on both sides of the protection unit 310, the three protection units 310 can be combined in pairs to complete the connection; and the specific quantity and setting position of the magnets 450 on each protection unit 310 can be reasonably changed with reference to the above description of the magnetic attraction between the three protection units 310.

[0119] Referring to the above description of the connecting member 440 and combining with Figure 19 and Figure 20, between the three protection units 310, three connecting members 440 can be provided. That is, an "I"-shaped connecting member 440 is provided between two adjacent protection units 310. The connecting member 440 has a columnar main body, and installation grooves are formed on opposite sides of the main body to form an "I" shape; the two protection units 310 are respectively embedded in the two installation grooves. It should be noted that considering the influence of the arrangement of the three electrodes 200 on the overall shape of the protection unit 310, the three protection units 310 are all embedded in the installation grooves of the two connecting members 440 at the same time. That is, the installation grooves opposite to each other of the two connecting members 440 will surround the protection unit 310 in the middle, thus completing the connection of the three protection units 310.

[0120] The specific setting of the connecting member 440 is not limited to the above form. The connecting member 440 can be provided with three installation grooves, and the three protection units 310 are respectively embedded in the three installation grooves of the connecting member 440 at the same time; the connecting member 440 can also be a connecting ring, and connection grooves for the connecting ring to be embedded can be provided on the outer sides of the three protection units 310. The connecting ring itself has a certain elasticity, so that the connecting ring can be sleeved on the three protection units 310, and then the connection of the three protection units 310 can be completed by using the elasticity of the connecting ring itself; the connecting member 440 can also be a connecting rod, and connection grooves for the ends of the connecting rod to be embedded are provided on the outer sides of the three protection units 310. The two connecting rods are respectively embedded in the connection grooves on two adjacent protection units 310, thus completing the connection of the three protection units 310.

[0121] When the three protection units 310 are movably connected, referring to the above description of the rotational connection between the three protection units 310, combined with Figure 21 and Figure 22 , rotating grooves 461 and rotating shafts 462 are respectively provided on two sides of each protection unit 310 adjacent to other protection units 310. When the rotating shaft 462 of one protection unit 310 is embedded in the rotating groove 461 of another protection unit 310, the rotating shaft 462 of another protection unit 310 will be embedded in the rotating groove 461 of this protection unit 310, thus completing the rotational connection between the three protection units 310. Considering the influence of the arrangement of the three electrodes 200 on the overall shape of the protection unit 310, the range of rotation between the three protection units 310 is extremely limited. Correspondingly, rotating shafts 462 can also be provided on both sides of one protection unit 310 at the same time, and rotating grooves 461 are provided on one side of the other two protection units 310 facing this protection unit 310; it is also possible to provide rotating grooves 461 on both sides of one protection unit 310 at the same time, and rotating shafts 462 are provided on one side of the other two protection units 310 facing this protection unit 310, and the rotational connection between the three protection units 310 can be completed in all cases.

[0122] It should be noted that other forms can also be used to achieve the relative rotation between the three protection units 310. For example, rotation grooves 461 are formed by extending from the opposite sides of one protection unit 310, and the other two protection units 310 are respectively rotatably connected in the two rotation grooves 461, thereby completing the rotational connection between the three protection units 310.

[0123] The above are examples of the connection methods between the protection units 310 when the number of electrodes 200 is three. Without violating the principle, corresponding changes can be made to each example to complete the connection between the protection units 310. This embodiment will not elaborate further, but the unrecorded changes should also be regarded as within the scope recorded and disclosed in this embodiment. Additionally, when the number of electrodes 200 is greater than three and the multiple electrodes 200 are arranged in other shapes or styles, the connection methods between the protection units 310 can be correspondingly changed by referring to the above examples. Without violating and changing the relevant principles, each change should also be regarded as within the scope recorded and disclosed in this embodiment.

[0124] Refer to Figures 23 to 28 In the embodiment of the present invention, a receiving groove 311 is formed through the protection unit 310 for receiving the electrode 200. The cross-section of the receiving groove 311 can be in a regular shape, such as polygons like triangles and rectangles, or various irregular shapes can also be designed according to actual requirements. The protection unit 310 is sleeved on the electrode 200 by using the receiving groove 311, thereby protecting the electrode 200 and reducing the possibility of metal debris adhering to the electrode 200 and causing a short circuit between the electrode 200 and the outer cover 100 or between the electrode 200 and the electrode 200. Inside the compressor 10, in addition to being directly connected to the wire 500, the electrode 200 may also be connected to a protector 600, and the protector 600 will reduce the possibility of an overload occurring in the circuit inside the compressor 10. The installation of the protector 600 requires the electrode 200 to have a certain length. Therefore, the protection unit 310 includes a first cylinder 320 and a second cylinder 330 with different lengths. The length of the first cylinder 320 is greater than that of the second cylinder 330, and the first cylinder 320 completely accommodates the electrode 200 into the receiving groove 311, further reducing the possibility of the electrode 200 being exposed. The second cylinder 330 exposes the top end of the electrode 200, that is, the protector 600 is connected to the electrode 200 sleeved with the second cylinder 330.

[0125] It should be noted that in other cases, the lengths of the respective protection units 310 can also be the same; in combination with the above description of the first cylinder 320 and the second cylinder 330, the equal lengths of the respective protection units 310 can be approximately understood as that the lengths of the respective protection units 310 are approximately equal to the length of the first cylinder 320 or the second cylinder 330 when they are equal, and the specific length of the protection unit 310 can vary according to factors such as the length of the electrode 200 and design requirements; when the lengths of the respective protection units 310 are the same, it can also effectively reduce the possibility of metal debris adhering to the electrode 200 along with the refrigerant or oil, thereby reducing the possibility of short circuit between the electrodes 200.

[0126] Taking the case where the number of electrodes 200 is three and the three electrodes 200 are arranged in a triangular pattern as an example; generally, only one protector 600 is provided, that is, the number of the second cylinders 330 is one, and the protection units 310 which are the first cylinders 320 are sleeved on the other two electrodes 200, and the connection manner between the second cylinder 330 and the two first cylinders 320 can refer to the above description of the connection manner of the three protection units 310. In this embodiment, it is preferably that the three protection units 310 are integrally formed.

[0127] However, it should be noted that when the electrode 200 needs to be connected to the protector 600, the protection unit 310 uses the second cylinder 330, and in order to facilitate the connection between the protector 600 and the electrode 200, the exposed length at the top of the electrode 200 sleeved with the second cylinder 330 is not less than 5 mm; it should be noted that the exposed length at the top of the electrode 200 refers to the length between the top surface of the electrode 200 and the top of the second cylinder 330; if the electrode 200 is connected to circuit components such as a general wire 500, the first cylinder 320 can be used. Whether the second cylinder 330 is used on the electrode 200 is only related to whether the protector 600 is connected to the electrode 200 and has nothing to do with the number of the electrodes 200.

[0128] Considering that when the outer cover 100 is fixed on the compressor 10 housing, high temperature will be generated, and the generated high temperature is generally higher than the temperature generated when the electrode 200 is energized; in order to avoid overall damage to the protective sleeve 300, an isolation gap is provided between the protective sleeve 300 and the surrounding plate 120, and the width of the isolation gap is not less than 0.1 mm; in other words, the gap between each protection unit 310 and the surrounding plate 120 is not less than 0.1 mm. At this time, the reinforcing rib 130 provided between the bottom plate 110 and the surrounding plate 120 can also isolate the direct contact between the protective sleeve 300 and the bottom plate 110, further reducing the possibility of damage to the protective sleeve 300 due to high temperature.

[0129] In order to facilitate the connection between the electrode 200 and circuit equipment such as the wire 500 or the protector 600, the electrode 200 is provided with an electrode 200 sheet, and the wire 500 or the protector 600 is provided with a plug-in terminal 510 corresponding to the electrode 200 sheet. When connected, the electrode 200 sheet is inserted into the plug-in terminal 510. Accordingly, in the first cylinder 320, in order to reduce the possibility of short circuit of the electrode 200 due to the adhesion of metal debris, the electrode 200 sheet is completely covered in the receiving groove 311; in the second cylinder 330, the electrode 200 sheet passes through the receiving groove 311 together with the end of the electrode 200 to connect with the protector 600. And because the protector 600 has a certain volume, in order to facilitate the installation of the protector 600, an avoidance port 321 is provided between the two first cylinders 320 adjacent to the second cylinder 330, thereby facilitating the installation of the protector 600, and the protector 600 is not easy to contact with the first cylinder 320.

[0130] In order to reduce the possibility of the electrode 200 being exposed in the first cylinder 320, that is, to ensure that the electrode 200 is completely covered in the accommodating groove 311, a resistance portion 322 is formed on the inner wall of the accommodating groove 311 of the first cylinder 320, and the resistance portion 322 is in conflict with the top surface of the electrode 200, thereby ensuring that the electrode 200 is completely arranged in the accommodating groove 311; and in order to prevent the resistance portion 322 from affecting the connection between the electrode 200 and the plug-in terminal 510, the resistance portion 322 only conflicts with part of the top surface of the electrode 200, thereby reducing the possibility of the resistance portion 322 interfering with the connection between the electrode 200 and the plug-in terminal 510. In addition, in order to facilitate the installation of the electric wire 500, a wire groove 324 is opened on the end of the first cylinder 320, and the wire groove 324 is used to accommodate the electric wire 500; in order to facilitate the connection between the plug-in terminal 510 and the electrode 200, a groove 323 is also opened on the top of the first cylinder 320. The setting of the groove 323 provides space for the connection between the plug-in terminal 510 and the electrode 200, thereby improving the convenience of the overall structure during installation.

[0131] In order to fix the protection unit 310 on the electrode 200, a fixing portion 312 is provided in the accommodating groove 311 of the first cylinder 320 and the second cylinder 330, and the fixing portion 312 will interfere with the electrode 200, thereby fixing the protection unit 310 on the electrode 200, reducing the possibility of the protection unit 310 falling off the electrode 200, and further ensuring the protective effect of the protection unit 310 on the electrode 200; it should be noted that when the protector 600 is connected to the electrode 200, the second cylinder 330 can be stably fixed on the electrode 200 with the help of the cooperation between the protector 600 and the electrode 200, and the two first cylinders 320 connected to the second cylinder 330 are also stably fixed on the electrode 200, and the setting of the fixing portion 312 further reduces the possibility of the protective cover 300 as a whole sliding on the electrode 200. Furthermore, in order to improve the fixing effect of the fixing portion 312, a notch groove is provided on the fixing portion 312, and the electrode 200 will conflict with the groove wall of the arc-shaped notch groove 313 to complete the fixation; in the present embodiment, the electrode 200 is cylindrical, and in order to make the notch groove adapt to the outer peripheral wall of the electrode 200, the cross-section of the notch groove is arc-shaped; when the electrode 200 is in a prism shape such as a triangular prism, a quadrangular prism or a pentagonal prism or other regular and irregular shapes, the cross-sectional shape of the notch groove may also change accordingly; for example, when the electrode 200 is in a triangular prism shape, the cross-sectional shape of the notch groove may be angular; when the electrode 200 is in a quadrangular prism shape, the cross-sectional shape of the notch groove may be angular or rectangular; the shape of the notch groove may change according to the specific shape of the electrode 200, and it may fit with the electrode 200 to improve the fixing effect of the fixing portion 312 on the electrode 200.

[0132] The electrode 200 is provided with an electrode 200 sheet, that is, after the overall structure is installed, the electrode 200 sheet and / or the plug-in terminal 510 directly conflicts with the groove wall of the accommodating groove 311, and the electrode 200 conflicts with the groove wall of the arc-shaped notch groove 313, and the top surface of the electrode 200 conflicts with the conflicting portion 322. The matching relationship of the above structure further reduces the possibility of the protective cover 300 sliding off the electrode 200 or slipping, thereby ensuring the protective effect of the protective cover 300 on the electrode 200.

[0133] It should be noted that, in order to make the best use of space and to give the protective cover 300 a certain volume to reduce the production and processing difficulty of the protective cover 300, the protection unit 310 is sleeved on the insulator 220; and in order to ensure the firmness of the fixation between the protection unit 310 and the electrode 200, the cross-sectional area of the receiving groove 311 cannot be too large. Therefore, an adaptation groove 340 is formed on one side wall of the receiving groove 311, and the adaptation groove 340 is used to expand the cross-sectional area of the bottom end of the receiving groove 311, so that the insulator 220 can be covered in the receiving groove 311 without affecting the firmness of the fixation between the protection unit 310 and the electrode 200; in addition, since the electrode 200 is provided with electrode pieces, and for the convenience of installation, the directions of the electrode pieces are generally the same. Thus, it may cause the cross-sectional area of the receiving groove 311 of at least one of the three protection units 310 to be too small; therefore, a receiving portion 700 may be formed protruding from the bottom of the protection unit 310, so as to expand the cross-sectional area of the receiving groove 311, and further ensure the normal installation of the protective cover 300.

[0134] Referring to Figure 29 , the present invention further provides a protection assembly applied to the compressor 10; the protection assembly provided by the present invention includes at least one protector 600 and at least one protective cover 300. The protector 600 and the protective cover 300 can refer to the above descriptions regarding the protector 600 and the protective cover 300; several electrodes 200 for external electrical connection are provided in the compressor 10, and the protector 600 is connected to the electrode 200; the protective cover 300 includes several protection units 310. The number of protection units 310 is not less than the number of electrodes 200. The protection units 310 are sleeved on the electrodes 200, and the protection units 310 correspond to the electrodes 200 one by one; it should be noted that the connection manner between the protection units 310 can refer to the above description, and the structure of a single protection unit 310 can also refer to the above description.

[0135] A compressor 10 provided by the present invention includes the above-mentioned electrode terminal 13. The specific structure of the electrode terminal 13 refers to the above-mentioned embodiment. Since this compressor 10 adopts all the technical solutions of the above-mentioned all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated here one by one.

[0136] It should be noted that the protection unit 310 can also be divided into a first cylinder 320 and a second cylinder 330 as described above. The first cylinder 320 is used to cover the entire electrode 200 as described above to reduce the possibility of metal debris adhering to the electrode 200, thereby reducing the possibility of short circuit between the electrode 200 and the outer shell 11 or between the electrode 200 and the electrode 200; the second cylinder 330 is also the same as described above, used to provide protection for the electrode 200 while exposing the top end of the electrode 200 for facilitating the connection of the protector 600; however, it should be noted that since the internal circuit settings in different compressors 10 may be different and the number of electrodes 200 is also different, the required number of protectors 600 is also different; when at least one electrode 200 is provided at a certain position in the compressor 10, the number of protectors 600 can be selected according to requirements, and then the number of the first cylinder 320 and the second cylinder 330 is determined according to the number of protectors 600; the first cylinder 320 and the first cylinder 320, the first cylinder 320 and the second cylinder 330, that is, the second cylinder 330 and the second cylinder 330 can be connected, and the connection method can refer to the above description; the first cylinder 320 and the first cylinder 320, the first cylinder 320 and the second cylinder 330, that is, the second cylinder 330 and the second cylinder 330 can also be independent of each other, that is, a single first cylinder 320 or second cylinder 330 forms the protective sleeve 300; when at least one electrode 200 is respectively provided at multiple positions in the compressor 10, the protector 600 and the protective sleeve 300 can be set in the same way as above for adaptation.

[0137] It should be noted that since the protective sleeve 300 is sleeved on the electrode 200, the electric wire 500 and the plug-in terminal 510 connected to the protector 600 or the electrode 200 can also be adaptively adjusted, that is, the electric wire 500 and the plug-in terminal 510 can also be regarded as part of the protection component.

[0138] The present invention also provides a refrigeration device, which includes the above compressor 10 and the electrode terminal 13. The specific structure of the electrode terminal 13 refers to the above embodiment. Since the compressor 10 adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0139] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings 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 compressor, It is characterized in that The invention comprises a housing, wherein an embedding groove is provided on the housing, and an electrode terminal is provided in the embedding groove; wherein the electrode terminal comprises: An outer cover, the outer cover comprising a bottom plate and a surrounding plate connected to the bottom plate; three electrodes, the three electrodes passing through the bottom plate and being insulated and connected to the bottom plate; The protective cover comprises three protective units, and the three protective units are respectively provided with corresponding three electrodes.

2. The compressor according to claim 1, It is characterized in that The protection unit is provided with a receiving groove for receiving the electrode; the protection unit comprises two first cylinders of different lengths and one second cylinder, the two first cylinders and the second cylinder are respectively sleeved on the electrode, the second cylinder exposes the top end of the electrode, and the exposed top end of the electrode is used to connect the protector.

3. The compressor according to claim 2, It is characterized in that The three electrodes are arranged in a triangle shape on the bottom plate.

4. The compressor according to claim 3, It is characterized in that The three protection units are integrally formed.

5. The compressor according to claim 4, It is characterized in that An escape opening is provided between two of the first cylinders adjacent to the second cylinders, and the escape opening is used for escaping the protector.

6. The compressor according to claim 4, It is characterized in that A resisting portion is formed on the inner wall of the accommodating groove of the first cylinder, and the resisting portion resists the top surface of the electrode.

7. The compressor according to claim 6, It is characterized in that The interfering portion interferes with a portion of the top surface of the electrode.

8. The compressor according to claim 4, It is characterized in that A fixing portion is arranged in the containing groove, and the fixing portion is in conflict with the electrode.

9. The compressor according to claim 8, It is characterized in that The fixing portion is provided with a notch groove, and the electrode is in conflict with the groove wall of the notch groove.

10. The compressor according to claim 9, It is characterized in that The cross section of the notch groove is arc-shaped.

11. The compressor according to claim 4, It is characterized in that A clearance groove is provided on the top of the first cylinder, and the clearance groove is used for installing the plug-in terminal.

12. The compressor according to claim 4, It is characterized in that A wire groove is provided on the top of the first cylinder, and the wire groove is used to accommodate the wires.

13. The compressor according to claim 4, It is characterized in that An insulator is arranged between the electrode and the bottom plate, the electrode passes through the insulator to be electrically connected to the outside, and the insulator is made of at least one of glass crystal or ceramic material.

14. The compressor according to claim 13, It is characterized in that The protection unit is sleeved on the insulator.

15. The compressor according to claim 14, It is characterized in that An adapting groove is provided on one side wall of the containing groove, and the adapting groove is used to accommodate the insulator.

16. A refrigeration device, It is characterized in that The refrigeration device comprises the compressor described in claims 1-15.

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