Protective structure and electric compressor

Abstract

The utility model relates to a compressor, in particular to a protective structure and an electric compressor, the protective structure comprises a terminal sealing sleeve, the terminal sealing sleeve comprises an insulation part and a guide part, the insulation part of the terminal sealing sleeve is sleeved on the periphery of a guide post, the guide part of the terminal sealing sleeve is arranged on one side of the terminal sealing sleeve, which is deviated from the guide post, and the terminal sealing sleeve is sleeved on the guide post. The guide part and the insulation part are fixedly connected and are in a sealed state; the partition plate covers one side of the guide part of the terminal sealing sleeve, and a through hole is formed in the partition plate; the insulation terminal sequentially penetrates through the through hole of the partition plate and the terminal sealing sleeve, the first end of the insulation terminal is connected with the guide column of the lead leading-out part in an inserted mode, and the second end of the insulation terminal is located on the outer side of the partition plate. According to the utility model, through the cooperation of the terminal sealing sleeve and the separator plate in the protection structure, the sealing performance of the electric compressor is improved to the greatest extent, and the impact of a refrigerant on an enameled wire is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of compressors, especially a kind of protective structure and electric compressor. BACKGROUND

[0002] The description in this part is only provided with the background information related to the utility model disclosure, and does not constitute prior art.

[0003] Compressor refers to the fluid instrument that low-pressure gas is promoted as high-pressure gas, and is the heart of refrigeration system. It is inhaled by suction pipe low-temperature low-pressure refrigerant (such as freon, carbon dioxide), and after being compressed by motor operation to drive scroll assembly, high-temperature high-pressure refrigerant is discharged to exhaust pipe, to provide power for refrigeration cycle.

[0004] Generally, the motor of electric compressor is mainly composed of rotor and stator arranged around the rotor, wherein the rotor is composed of rotor core, rotor coil and rotating shaft, and the stator is composed of stator core, insulation skeleton fixedly connected to both ends of the stator core in the axial direction, and stator coil wound on the stator core with the insulation skeleton as the carrier. The stator coil is wound by enameled wire, but since the enameled wire is directly exposed in the intake chamber of the compressor, the refrigerant inevitably impacts the enameled wire after entering the intake chamber from the suction pipe during the operation of the compressor. In some small displacement scroll compressors, since the intake speed is slow, the enameled wire is generally not damaged, but in large displacement scroll compressors, since the intake speed is fast, the impact force on the enameled wire is large, which easily causes the enameled wire to be damaged, thereby causing the stator to be damaged and even the motor to be damaged.

[0005] The protection of electric compressor needs to ensure that the current does not cause short circuit or electrical interference when flowing between the connection points due to the invasion of refrigerant, thereby ensuring the safety and stability of the circuit, and on the other hand, it is necessary to reduce the impact of refrigerant on the enameled wire in the motor, thereby improving the stability and reliability of large displacement compressor operation and improving the product life. The existing electric compressor still cannot better solve this problem.

[0006] It should be noted that the introduction to the technical background above is only to facilitate the clear and complete description of the technical scheme of the utility model, and to facilitate the understanding of the technical personnel in the field. The above technical scheme cannot be considered as known by the technical personnel in the field only because it is described in the background technology part of the utility model. UTILITY MODEL CONTENT

[0007] The utility model aims to provide a kind of protective structure and electric compressor, which can maximize the improvement of the sealing performance of electric compressor by the cooperation of terminal sealing sleeve and partition plate in protective structure, and reduce the impact of refrigerant on enameled wire.

[0008] In order to achieve the above object, the utility model discloses a kind of protective structures, the protective structure is installed in the inside of electric compressor, the electric compressor includes stator core, framework, cover component, lead wire lead-out part, wherein, the framework is installed in the stator core side, the cover component is covered in the side of the framework away from the stator core, the lead wire lead-out part is installed on the top surface of the cover component, the top surface of the lead wire lead-out part has guide column, wherein, the protective structure includes:

[0009] Terminal sealing sleeve, the insulating portion of the terminal sealing sleeve is sleeved on the periphery of the guide column, the guide portion of the terminal sealing sleeve is arranged on the side of the terminal sealing sleeve away from the guide column, the guide portion and the insulating portion are fixedly connected and in sealed state;

[0010] Partition, the partition is covered on the guide portion side of the terminal sealing sleeve, and the partition is provided with a through hole;

[0011] Insulating terminal, the insulating terminal has oppositely arranged first end and second end, the insulating terminal is sequentially arranged in the through hole of the partition and the terminal sealing sleeve, the first end of the insulating terminal is inserted into the guide column of the lead wire lead-out part, so that the insulating terminal is used for electrically connected with the contact in the lead wire lead-out part, and the second end of the insulating terminal is located to the outside of the partition.

[0012] As further description of the above technical solution, the number of the combination of the guide column, the terminal sealing sleeve and the through hole is multiple, and the multiple terminal sealing sleeves are connected in series as a whole terminal sealing mechanism.

[0013] As further description of the above technical solution, the terminal sealing mechanism and the lead wire lead-out part are placed obliquely, so that the positions of multiple lead wires connected on the side of the lead wire lead-out part correspond one by one with the positions of multiple terminal sealing sleeves in the terminal sealing mechanism.

[0014] As further description of the above technical solution, the diameter size of the insulating portion of the terminal sealing sleeve is greater than the diameter size of the guide portion of the terminal sealing sleeve.

[0015] As further description of the above technical solution, the partition is provided with a mounting hole for fixation.

[0016] As further description of the above technical solution, the insulating portion and the guide portion of the terminal sealing sleeve are integrally arranged.

[0017] As further description of the above technical solution, the length of the insulating portion and the guide portion of the terminal sealing sleeve along the axial direction is equal.

[0018] As a further description of the above technical solution, at least part of the insulating part of the terminal sealing sleeve is in abutting contact with the top surface of the lead wire leading-out part.

[0019] The utility model discloses still provide a kind of electric compressor, including stator core, framework, cover member, lead wire leading-out part, wherein, the electric compressor further include the protective structure as described above, the stator core, the framework, the cover member, the lead wire leading-out part, the protective structure are sequentially stacked and installed.

[0020] As a further description of the above technical solution, the cover member includes:

[0021] Main body part;

[0022] Protective part, the protective part is integrally connected to the axial end of the main body part away from the stator core side;

[0023] Through part, a plurality of through parts are formed on the protective part to enable the refrigerant to pass through the cover member, and each through part is offset opposite to the stator coil in the axial direction of the stator core.

[0024] Through the above technical solution, the utility model has the beneficial effects as follows:

[0025] In the protective structure and the electric compressor composed of the protective structure of the utility model, due to the intervention of the protective structure, the insulation terminal is arranged between the sealed partition plate and the terminal sealing sleeve and inserted into the guide column of the lead wire leading-out part, which provides excellent isolation effect for the insulation terminal itself, so that short circuit or electrical interference caused by refrigerant invasion can be avoided, the safety and stability of the circuit are affected, and the impact of refrigerant on the enameled wire in the motor can be significantly reduced through the cooperation of the partition plate and the cover member, thereby solving the stability and reliability problems of large displacement compressor operation.

[0026] To further understand the features and technical contents of the utility model, please refer to the following detailed description and drawings of the utility model, however, the provided drawings are only used for reference and illustration, and not used to limit the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0027] To more clearly illustrate the technical solutions in the embodiments or prior art of the present specification, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description, and obviously, the drawings in the following description are only some embodiments described in the present specification, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0028] Fig. 1This is a three-dimensional schematic diagram of a protective structure and an electric compressor provided in the embodiments of this specification;

[0029] Fig. 2 This is a schematic diagram of a protective structure and a lead wire outlet of an electric compressor provided in the embodiments of this specification;

[0030] Fig. 3 This is a front view of a protective structure and an electric compressor provided in the embodiments of this specification;

[0031] In the picture:

[0032] 1. Stator core;

[0033] 2. Skeleton;

[0034] 3. Cover component; 31. Main body; 32. Protective part; 33. Through part;

[0035] 4. Lead wire exit section; 41. Guide post;

[0036] 5. Terminal sealing sleeve; 51. Insulating part; 52. Guide part;

[0037] 6. Partition; 61. Mounting holes;

[0038] 7. Insulating terminals;

[0039] 8. Lead wire. Detailed Implementation

[0040] To enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this specification, and not all embodiments. Based on the embodiments in this specification, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this specification.

[0041] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content disclosed in this specification. This utility model can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of this utility model. Furthermore, the accompanying drawings of this utility model are for simple illustration only and are not depictions of actual dimensions, as stated in advance. The following embodiments will further describe the relevant technical content of this utility model in detail, but the disclosed content is not intended to limit the scope of protection of this utility model.

[0042] It should be understood that although the terms "first", "second", "third", etc. can be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are mainly used to distinguish one component from another component, or one signal from another signal. In addition, the term "or" used herein can include any combination of one or more associated listed items.

[0043] Referring to Figs. 1-3 A protective structure is installed in the interior of an electric compressor, and the electric compressor includes a stator core 1, a skeleton 2, a cover member 3, and a lead wire lead-out portion 4. The skeleton 2 is installed on one side of the stator core 1, the cover member 3 is provided on the side of the skeleton 2 away from the stator core 1, and the lead wire lead-out portion 4 is installed on the top surface of the cover member 3. The top surface of the lead wire lead-out portion 4 has a guide column 41. The protective structure includes:

[0044] A terminal sealing sleeve 5 includes an insulation portion 51 and a guide portion 52 connected to each other. The insulation portion 51 of the terminal sealing sleeve 5 is sleeved on the periphery of the guide column 41, and the guide portion 52 of the terminal sealing sleeve 5 is provided on the side of the terminal sealing sleeve 5 away from the guide column 41. The guide portion 52 and the insulation portion 51 are fixedly connected and in a sealed state.

[0045] A partition plate 6 is provided on the side of the guide portion of the terminal sealing sleeve 5. The partition plate 6 has a through hole, and the position of the through hole matches the positions of the guide portion 51 of the terminal sealing sleeve 5 and the guide column 41.

[0046] An insulation terminal 7 has a first end and a second end arranged opposite to each other. The insulation terminal 7 is sequentially arranged in the through hole of the partition plate 6 and the terminal sealing sleeve 5. The first end of the insulation terminal 7 is inserted into the guide column 41 of the lead wire lead-out portion 4, so that the insulation terminal is used for electrical connection with the contact in the lead wire lead-out portion. The second end of the insulation terminal 7 is located on the outside of the partition plate 6.

[0047] Through the above structure, based on the intervention of the protection structure, the insulation terminal is arranged between the sealed partition plate 6 and the terminal sealing sleeve 5 and inserted into the guide column 41 of the lead-out portion, which provides excellent isolation effect for the insulation terminal 7 itself, so that short circuit or electrical interference caused by the invasion of refrigerant can be avoided, the safety and stability of the circuit are affected, the impact of the refrigerant on the enameled wire in the motor can be significantly reduced through the cooperation of the partition plate and the cover member, and the stability and reliability of the large displacement compressor are solved. Specifically, based on the above structure, the partition plate 6, the terminal sealing sleeve 5 and the lead-out portion 4 jointly seal and isolate the insulation terminal 7, the height of the partition plate 6 or the terminal sealing sleeve 5 can be adjusted according to the actual structure to provide a suitable protection range, and the impact of the refrigerant penetrating the stator core 1 is avoided. In addition, the insulation part 51 and the guide part 52 in the utility model are provided in an integrated structure, which can be made of elastic rubber material or the like to meet the sealing requirement, and the length of the guide part 52 and the insulation part 51 is equivalent, which ensures a certain structural strength on the basis of the sealed state.

[0048] The following several embodiments are optimized for the utility model, and the purpose is to realize more stable operation effect of the electric compressor:

[0049] Embodiment 1

[0050] In this embodiment, the number of combinations of the guide column 41, the terminal sealing sleeve 5 and the through hole is multiple, and the multiple terminal sealing sleeves 5 are connected in series as a whole terminal sealing mechanism. The terminal sealing mechanism is placed obliquely between the lead-out portion 4, so that the positions of the multiple lead wires 8 connected to one side of the lead-out portion 4 correspond to the positions of the multiple terminal sealing sleeves 5 in the terminal sealing mechanism. Specifically, the lead-out portion 4 in this embodiment is connected to three lead wires 8 connected to the stator coil, and the three terminal sealing sleeves 5 are obliquely combined and placed, so that each terminal sealing sleeve 5 corresponds to the end position of one lead wire, which facilitates close organization and connection and improves the sealing effect.

[0051] Embodiment 2

[0052] The diameter of the insulation part 51 of the terminal sealing sleeve 5 is larger than the diameter of the guide part 52 of the terminal sealing sleeve 5. Specifically, the insulation part 51 is mainly used for tightly sleeving the guide column 41, and the guide part 52 is used for supporting the insulation terminal 7 therebetween. Therefore, due to the larger diameter of the guide column 41, on the one hand, the terminal sealing sleeve 5 can be easily positioned, and the installation difficulty of the terminal sealing sleeve 5 is reduced, and on the other hand, the material strength of the terminal sealing sleeve 5 can be consistent, and the fixing strength of the insulation terminal 7 is improved.

[0053] Embodiment 3

[0054] The partition plate 6 is provided as a waist-round plate structure, and each end of the partition plate 6 is provided with a mounting hole 61 for fixing. The partition plate 6 mainly plays a role of positioning and fixing the overall protective structure, is embedded in a preset sealing area arranged at the top of the cylinder body, and can be quickly disassembled and assembled through the mounting hole 61.

[0055] Embodiment 4

[0056] The insulating part 51 of the terminal sealing sleeve 5 is arranged in abutting contact with the top surface of the lead wire lead-out part 4. That is, in the embodiment, the insulating part 51 of the terminal sealing sleeve 5 realizes a further sealing effect through abutting contact with the top surface of the lead wire lead-out part 4, and the internal insulating terminal 7 structure is maximally avoided from being invaded. The bottom of the insulating part 51 in the embodiment is closely attached to the top surface of the lead-out part 4, and the top of the guide part 52 is closely attached to the bottom surface of the partition plate 6, so as to achieve the best isolation effect.

[0057] The utility model discloses still a kind of electric compressor, main features are that electric compressor itself realizes sealing effect by the above-mentioned protective structure, and electric compressor further has the following characteristics: cover member 3 includes main body part 31;Protective part 32, protective part 32 is integrally connected to the side of the axial end portion of main body part 31 away from stator core 1;Through part 33, multiple through parts are formed on protective part 32 to enable refrigerant to pass through cover member 3 and flow, and each through part 33 is in the axial direction of stator core 1 with stator coil is opposite in dislocation. By the existence of cover member 3 as the baffle of refrigerant, better protective effect is realized in cooperation with protective structure, avoid the influence of refrigerant to internal structure pipeline, provide best stable effect.

[0058] The above disclosed content is only preferred feasible embodiment of the utility model, and is not thus limited the patent application scope of the utility model, so that equivalent technical change made by applying the utility model specification and drawing content is contained in the patent application scope of the utility model.

[0059] Each embodiment in the specification is described in a progressive manner, and the same or similar parts between each embodiment can be referred to each other, and each embodiment mainly describes the difference from other embodiments.

[0060] Although the present application is described by embodiments, those skilled in the art know that the present application has many modifications and variations without departing from the spirit of the present application, and it is intended that the appended embodiments include these modifications and variations without departing from the present application.

Claims

1. A protective structure, said protective structure being installed inside an electric compressor, said electric compressor comprising a stator core, a frame, a cover component, and a lead wire outlet, wherein, The frame is installed on one side of the stator core, the cover member covers the side of the frame opposite to the stator core, the lead wire exit is installed on the top surface of the cover member, and the top surface of the lead wire exit has a guide post. The protective structure comprises: A terminal sealing sleeve, comprising an insulating part and a guiding part, wherein the insulating part of the terminal sealing sleeve is sleeved around the guide post, and the guiding part of the terminal sealing sleeve is disposed on the side of the terminal sealing sleeve opposite to the guide post, the guiding part and the insulating part are fixedly connected and are in a sealed state; A partition plate is provided on one side of the guide portion of the terminal sealing sleeve, and the partition plate is provided with a through hole; An insulating terminal has a first end and a second end disposed opposite to each other. The insulating terminal is sequentially inserted into the through hole of the partition and the terminal sealing sleeve. The first end of the insulating terminal is inserted into the guide post of the lead wire outlet, so that the insulating terminal is used to electrically connect with the contacts in the lead wire outlet. The second end of the insulating terminal is located on the outside of the partition.

2. The protective structure according to claim 1, characterized in that: The number of combinations of the guide post, the terminal sealing sleeve, and the through hole is multiple and spaced apart, and the multiple terminal sealing sleeves are connected in series to form a whole terminal sealing mechanism.

3. The protective structure according to claim 2, characterized in that: The terminal sealing mechanism is placed at an angle to the lead wire outlet so that the positions of the multiple leads connected to one side of the lead wire outlet correspond one-to-one with the positions of the multiple terminal sealing sleeves in the terminal sealing mechanism.

4. The protective structure according to claim 1, characterized in that: The diameter of the insulating part of the terminal sealing sleeve is larger than the diameter of the guide part of the terminal sealing sleeve.

5. The protective structure according to claim 1, characterized in that: The partition is provided with mounting holes for fixing.

6. The protective structure according to claim 1, characterized in that: The insulating part and the guiding part of the terminal sealing sleeve are integrally formed.

7. The protective structure according to claim 1, characterized in that: The insulating portion and the guiding portion of the terminal sealing sleeve have equal axial lengths.

8. The protective structure according to claim 1, characterized in that: At least a portion of the insulating portion of the terminal sealing sleeve is abutted and fitted against the top surface of the lead wire outlet portion.

9. An electric compressor, comprising a stator core, a frame, a cover component, and a lead wire outlet, characterized in that, The electric compressor further includes the protective structure according to any one of claims 1-8, characterized in that: the stator core, the frame, the cover member, the lead wire lead-out portion, and the protective structure are stacked and installed in sequence.

10. The electric compressor according to claim 9, characterized in that, The cover component includes: Main body; A protective part is integrally connected to the side of the main body that is away from the axial end of the stator core; A plurality of through portions are formed on the protective portion to allow refrigerant to flow through the cover member, each of the through portions being axially offset from the stator coil in the stator core.

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