Electric scroll compressor

Abstract

The utility model relates to the technical field of scroll compressors, in particular to an electric scroll compressor. The utility model provides an electric scroll compressor. The electric scroll compressor comprises a main case, a rack, a top cover, a stator, a rotor, a movable disc, a static disc assembly and an auxiliary ventilation structure, and the auxiliary ventilation structure is arranged on the inner wall of the main case at a position opposite to the air suction port or at the bottom of the stator at a position opposite to the air suction port. A part of refrigerant gas entering from the air suction port directly flows to the air hole groove in the rack through an exhaust groove communicated with the air suction port; the other part of the refrigerant gas entering from the air suction port is wound to the lower cavity and then flows to the air hole groove through the vent hole of the rotor and the plurality of exhaust grooves; the auxiliary ventilation structure increases the air suction amount from the air suction port to the air hole groove. Therefore, the effective through-flow area in the air suction port of the main case is increased, and smooth through-flow of the compressor is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of scroll compressors, in particular to an electric scroll compressor. Background Art

[0002] Scroll compressors are high-efficiency, low-noise, and smooth-operating positive displacement compressors. Due to their compact structure and small size, they are widely used in the automotive sector. With the recent development and increased adoption of new energy vehicles, the market has placed higher demands on the performance, NVH, and reliability of scroll compressors. While the overall size and weight of scroll compressors are gradually decreasing, performance and NVH requirements are steadily increasing.

[0003] When a scroll compressor is in operation, the orbiting scroll is driven by the crankshaft and moves eccentrically around the center of the stationary scroll. The movement of the orbiting disk generates suction, drawing refrigerant through the housing's intake port. This port is located below the main casing. The refrigerant passes through the compression chambers between the scrolls and moves toward the central compression chamber. The compressed gas is discharged through the center hole of the stationary disk into the top cover and out the outlet port on the side of the top cover.

[0004] However, the compressor intake is typically located on the main housing. The size and location of the compressor intake and exhaust ports, as well as the location of the mounting bracket, are determined by the vehicle's installation space and method. Given fixed dimensions for the dynamic and static discs, controller, and motor, the main housing design positions the intake port close to the motor stator end. This stator end partially or completely blocks the housing intake port, impacting the intake flow area. This can lead to poor intake and pulsating airflow, reducing compressor intake efficiency and worsening compressor NVH. Utility Model Content

[0005] The purpose of the present utility model includes, for example, providing an electric scroll compressor, which can increase the effective flow area inside the air intake of the main casing to ensure smooth flow through the compressor.

[0006] The embodiment of the present utility model can be implemented as follows:

[0007] In a first aspect, the present invention provides an electric scroll compressor, comprising:

[0008] Main casing, frame, top cover, stator, rotor, moving plate, and static plate assembly;

[0009] Along the height direction of the main housing, the frame and the top cover are sequentially located at the top of the main housing; the stator is fixedly disposed in the main housing, and a gap is provided between the stator and the bottom of the inner wall of the main housing to form a lower cavity; the movable plate is rotatably disposed on the upper portion of the frame, and the stator assembly is fixed between the frame and the top cover; the rotor and the stator are rotatably matched, and the rotor is eccentrically connected to the movable plate so that the movable plate can perform circumferential translation in the stator assembly;

[0010] The inner wall of the main housing is provided with a plurality of exhaust grooves, and each exhaust groove extends along the height direction of the main housing; an air intake hole is provided at the bottom of the main housing, and the air intake hole passes through the outer wall of the main housing to one of the exhaust grooves, and the air intake hole forms an air intake port on the inner wall of the main housing;

[0011] Along the extension direction of the air intake hole, a portion of the orthographic projection of the air intake port faces the bottom of the stator, and the other portion of the orthographic projection of the air intake port faces the lower cavity;

[0012] The air intake hole is configured to be able to inhale refrigerant gas, and a portion of the refrigerant gas entering from the air intake port directly flows to the air hole slot on the frame through one of the exhaust grooves communicated with the air intake port; another portion of the refrigerant gas entering from the air intake port flows around the lower cavity, and then flows to the air hole slot through the air vent of the rotor and the plurality of exhaust grooves respectively; the refrigerant gas flowing through the air hole slot then enters the compression chamber through the stator plate assembly, and is then discharged through the air outlet of the top cover after being compressed;

[0013] It also includes an auxiliary ventilation structure; the auxiliary ventilation structure is arranged on the inner wall of the main casing facing the air intake, or on the bottom of the stator facing the air intake, so as to increase the air intake volume from the air intake to the air hole slot.

[0014] In an optional embodiment, the auxiliary ventilation structure is provided on the inner wall of the main housing facing the air inlet;

[0015] Furthermore, the air intake port is communicated with at least one of the other exhaust grooves adjacent to the air intake port through the auxiliary ventilation structure.

[0016] In an optional embodiment, the auxiliary ventilation structure is a ventilation groove provided on the inner wall of the main housing, one end of the ventilation groove is connected to the air intake port, and the other end is connected to another exhaust groove adjacent to the air intake port.

[0017] In an optional embodiment, the auxiliary ventilation structure is provided on the inner wall of the main housing facing the air inlet;

[0018] Furthermore, the auxiliary ventilation structure can increase the gap between the air intake and the bottom of the stator.

[0019] In an optional embodiment, the auxiliary ventilation structure is a reaming portion provided on the inner wall of the main housing, and the reaming portion is communicated with the air intake hole;

[0020] Along the direction from the outer wall of the main housing to the air intake port, the diameter of the air intake hole has an increasing trend.

[0021] In an optional embodiment, the reaming portion is an inclined hole;

[0022] The inclined hole is formed on the bottom wall of the air intake hole; and the inclined hole extends from the bottom wall of the air intake hole toward the lower cavity until it passes through the inner wall of the main housing.

[0023] In an optional embodiment, the reaming portion is a circumferential countersunk hole;

[0024] The circumferential countersunk hole is formed on the inner wall of the main housing opposite to the air intake hole; the inner diameter of the circumferential countersunk hole is larger than the inner diameter of the air intake hole.

[0025] In an optional embodiment, the circumferential counterbore and the suction hole are coaxially arranged.

[0026] In an optional embodiment, the auxiliary ventilation structure is provided at a position on the bottom of the stator directly facing the air intake port, and the auxiliary ventilation structure can increase the gap between the air intake port and the bottom of the stator.

[0027] In an optional embodiment, the auxiliary ventilation structure is a notch portion provided on the bottom of the stator;

[0028] The notch portion faces the air intake port; and the notch portion extends along the radial direction of the stator and the axial center line direction of the stator.

[0029] The beneficial effects of the embodiments of the present invention include, for example:

[0030] The electric scroll compressor of this solution includes a main casing, a frame, a top cover, a stator, a rotor, a moving disk, a stator assembly and an auxiliary ventilation structure. A flow path of refrigerant gas is formed in the electric scroll compressor, one of which is from the air intake hole, the exhaust groove, the air hole slot of the frame, the compression chamber of the stator assembly, to the air outlet of the top cover; the other flow path is from the air intake hole, the lower cavity, the air hole of the rotor, the air hole slot of the frame, the compression chamber of the stator assembly, to the air outlet of the top cover. Since along the extension direction of the air intake hole, a part of the orthographic projection of the air intake hole faces the bottom of the stator, and the other part of the orthographic projection of the air intake hole faces the lower cavity, the main casing is designed so that the position of the air intake is close to the end face of the motor stator. The end of the motor stator will partially or completely block the air intake of the casing, affecting the air flow area, causing poor air intake and air flow pulsation in the compressor, resulting in affected air intake efficiency of the compressor and worsening NVH of the compressor. This solution increases the amount of air intake from the air intake to the air hole slot by arranging the auxiliary ventilation structure on the inner wall of the main casing opposite to the air intake port, or on the bottom of the stator opposite to the air intake port, thereby effectively improving the flow smoothness, the air intake efficiency and the NVH without adding more parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 It is a structural diagram of a scroll compressor in the prior art;

[0033] Figure 2 A structural schematic diagram of a scroll compressor of the prior art from another perspective;

[0034] Figure 3 A structural schematic diagram of a scroll compressor in the prior art from another perspective;

[0035] Figure 4 This is a schematic structural diagram of an electric scroll compressor according to a first embodiment of the present invention;

[0036] Figure 5 This is a structural schematic diagram of the electric scroll compressor from another perspective of the first embodiment of the present utility model;

[0037] Figure 6 This is a structural schematic diagram of the electric scroll compressor according to the first embodiment of the present utility model from another perspective;

[0038] Figure 7 This is a structural schematic diagram of the electric scroll compressor according to the first embodiment of the present utility model from another perspective;

[0039] Figure 8 This is a schematic structural diagram of an electric scroll compressor according to a second embodiment of the present invention;

[0040] Figure 9 This is a structural schematic diagram of the electric scroll compressor of the second embodiment of the present utility model from another perspective;

[0041] Figure 10 This is a structural schematic diagram of the electric scroll compressor according to the second embodiment of the present utility model from another perspective;

[0042] Figure 11 This is a schematic structural diagram of an electric scroll compressor according to a third embodiment of the present invention;

[0043] Figure 12 This is a schematic structural diagram of the electric scroll compressor according to the third embodiment of the present invention from another perspective;

[0044] Figure 13 This is a structural schematic diagram of the electric scroll compressor according to the third embodiment of the present invention from another perspective;

[0045] Figure 14 This is a schematic structural diagram of an electric scroll compressor according to a fourth embodiment of the present invention;

[0046] Figure 15 This is a structural schematic diagram of the electric scroll compressor of embodiment 4 of the present utility model from another perspective.

[0047] Icons: 100-main casing; 101-lower cavity; 102-upper cavity; 110-exhaust groove; 120-intake hole; 121-intake port; 200-frame; 210-air hole slot; 300-top cover; 310-outlet; 400-stator; 500-rotor; 510-vent; 600-moving disk; 700-static disk assembly; 701-compression chamber; 800-auxiliary ventilation structure; 810-vent slot; 820-expansion portion; 821-inclined hole; 822-circumferential countersunk hole; 830-notch portion. DETAILED DESCRIPTION

[0048] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0049] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0050] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0051] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0052] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0053] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention can be combined with each other.

[0054] See also Figure 1 、 Figure 2 and Figure 3 , as can be seen from the figure, this is a schematic diagram of the structure of a scroll compressor in the prior art.

[0055] During the suction phase, the refrigerant gas enters the compressor through the housing suction hole 120 , passes through the gap channel between the stator 400 and the main housing 100 , and is sucked into the periphery of the stator plate assembly 700 .

[0056] During the compression phase, the refrigerant gas enters the vortex compression chamber 701 through the vortex suction port 121 on the stator assembly 700 and is compressed as the motor rotates.

[0057] During the exhaust phase, the compressed gas is discharged through the exhaust holes of the stator assembly 700 and finally discharged into the condenser through the air outlet 310 of the top cover 300.

[0058] Furthermore, during operation of the compressor, the air intake 120 continuously draws in refrigerant gas. Multiple exhaust grooves 110 are provided between the inner wall of the main housing 100 and the outer shell of the stator 400. A portion of the refrigerant gas entering the air intake 121 flows directly through an exhaust groove 110 on the main housing 100 that communicates with the air intake 121 and toward the air hole 210 of the frame 200. The remaining portion of the refrigerant gas flows around the lower cavity 101 of the main housing 100 and then flows through the vent 510 of the motor rotor 500 and the multiple exhaust grooves 110 on the main housing 100 and toward the air hole 210 of the frame 200.

[0059] The refrigerant gas entering the air hole groove 210 enters the compression chamber 701 through the periphery of the static plate assembly 700, and the dynamic plate 600 performs a translational motion around the static plate assembly 700. After being compressed inside the dynamic and static plate assembly 700, the refrigerant gas is discharged to the top cover 300 through the axial hole of the central component of the static plate assembly 700, and is discharged from the air outlet 310 of the top cover 300.

[0060] When the size and position of the air intake port 121 are determined, the interior of the air intake port 121 is axially blocked by the end of the motor stator 400 by about 70% of its height and radially blocked by the motor stator 400 by about 30% of its width. The stator 400 blocks nearly 30% of the flow area of ​​the air intake port 121, causing poor air intake and air flow pulsation in the compressor, affecting the air intake efficiency and deteriorating the NVH performance.

[0061] In order to improve the above technical problems, an electric scroll compressor is provided in the following embodiment.

[0062] Example 1

[0063] Please refer to Figure 4 、 Figure 5 、 Figure 6 and Figure 7 This embodiment provides a movable scroll compressor, including a main casing 100, a frame 200, a top cover 300, a stator 400, a rotor 500, a movable plate 600, a stator plate assembly 700 and an auxiliary ventilation structure 800.

[0064] Along the height direction of the main housing 100, the frame 200 and the top cover 300 are sequentially arranged at the top of the main housing 100; the stator 400 is fixedly disposed in the main housing 100, and a gap is formed between the stator 400 and the bottom of the inner wall of the main housing 100 to form a lower cavity 101; the movable plate 600 is rotatably disposed on the upper part of the frame 200, and the stator plate assembly 700 is fixedly disposed between the frame 200 and the top cover 300; the rotor 500 and the stator 400 are rotatably engaged, and the rotor 500 and the movable plate 600 are eccentrically connected so that the movable plate 600 can perform circumferential translation in the stator plate assembly 700;

[0065] The main housing 100 has a plurality of exhaust grooves 110 formed on its inner wall, each of which extends along the height of the main housing 100. An air intake hole 120 is provided at the bottom of the main housing 100. The air intake hole 120 extends from the outer wall of the main housing 100 to one of the exhaust grooves 110, and the air intake hole 120 forms an air intake port 121 on the inner wall of the main housing 100.

[0066] Along the extension direction of the air intake hole 120 , a portion of the orthographic projection of the air intake port 121 faces the bottom of the stator 400 , and the other portion of the orthographic projection of the air intake port 121 faces the lower cavity 101 ; a gap is provided between the stator 400 and the bottom of the frame 200 to form an upper cavity 102 .

[0067] The air intake 120 is configured to be able to inhale refrigerant gas. A portion of the refrigerant gas entering from the air intake 121 flows directly to the air hole slot 210 on the frame 200 through an exhaust groove 110 connected to the air intake 121. Another portion of the refrigerant gas entering from the air intake 121 flows around the lower cavity 101 and then flows to the air hole slot 210 through the air vent 510 and multiple exhaust grooves 110 of the rotor 500. The refrigerant gas flowing through the air hole slot 210 then enters the compression chamber 701 through the stator assembly 700, and is then compressed and discharged through the air outlet 310 of the top cover 300.

[0068] The auxiliary ventilation structure 800 is arranged on the inner wall of the main housing 100 facing the air inlet 121, or on the bottom of the stator 400 facing the air inlet 121 to increase the air intake from the air inlet 121 to the air hole slot 210.

[0069] The electric scroll compressor of this embodiment includes a main housing 100, a frame 200, a top cover 300, a stator 400, a rotor 500, a rotor plate 600, a stator plate assembly 700, and an auxiliary ventilation structure 800. A flow path for refrigerant gas is formed in the electric scroll compressor, wherein one flow path is from the air intake hole 120, the exhaust groove 110, the upper cavity 102, the air hole slot 210 of the frame 200, the compression chamber 701 of the stator plate assembly 700, to the air outlet 310 of the top cover 300; and another flow path is from the air intake hole 120, the lower cavity 101, the air hole 510 of the rotor 500, the upper cavity 102, the air hole slot 210 of the frame 200, the compression chamber 701 of the stator plate assembly 700, to the air outlet 310 of the top cover 300.

[0070] Since along the extension direction of the air intake hole 120, a part of the positive projection of the air intake port 121 faces the bottom of the stator 400, and the other part of the positive projection of the air intake port 121 faces the lower cavity 101, the main housing 100 is designed so that the position of the air intake port 121 approaches the end face of the motor stator 400. The end of the motor stator 400 will partially or completely block the housing air intake port 121, affecting the air flow area, causing the compressor to have poor air intake and air flow pulsation, resulting in the compressor air intake efficiency being affected and the compressor NVH being worsened. However, this solution increases the air intake volume from the air intake port 121 to the air hole slot 210 by arranging the auxiliary ventilation structure 800 on the inner wall of the main housing 100 facing the air intake port 121, or on the bottom of the stator 400 facing the air intake port 121, thereby effectively improving the flow smoothness, improving the air intake efficiency, and improving NVH without increasing the number of components.

[0071] Please continue reading Figure 5 、 Figure 6 and Figure 7 As can be seen from the figure, in an optional embodiment, the auxiliary ventilation structure 800 is disposed on the inner wall of the main housing 100 directly opposite the air intake 121; and the air intake 121 is connected to at least one of the other exhaust grooves 110 adjacent to the air intake 121 through the auxiliary ventilation structure 800. Optionally, six exhaust grooves 110 are evenly distributed around the inner wall of the main housing 100. The thick dashed arrow in the figure indicates the flow path of the refrigerant gas.

[0072] In an optional embodiment, the auxiliary ventilation structure 800 is a ventilation groove 810 provided on the inner wall of the main housing 100 , one end of the ventilation groove 810 is connected to the air intake port 121 , and the other end is connected to another exhaust groove 110 adjacent to the air intake port 121 .

[0073] Furthermore, a ventilation groove 810 is added radially along the inner side of the air inlet 121 on the side wall surface inside the main housing 100 that contacts the stator 400 shell, and the shape is an arc groove that is not limited to a circle or a square.

[0074] With the addition of vent grooves 810, a portion of the refrigerant gas entering the intake port 121 can flow directly through the two exhaust grooves 110 on the main housing 100 that communicate with the intake port 121 to the air vent grooves 210 of the frame 200. The remaining portion detours through the lower cavity 101 of the main housing 100 and flows through the vent holes 510 of the motor rotor 500 and the six exhaust grooves 110 on the main housing 100 to the air vent grooves 210 of the frame 200. This arrangement increases the passage from the intake port 121 to the second flow groove in the main housing 100, effectively improving flow smoothness, enhancing intake efficiency, and improving NVH without adding additional components.

[0075] Example 2

[0076] This embodiment differs from the first embodiment in that the auxiliary ventilation structure 800 is located on the inner wall of the main housing 100, directly opposite the air inlet 121. Furthermore, the auxiliary ventilation structure 800 increases the gap between the air inlet 121 and the bottom of the stator 400. This arrangement increases the air flow at the air inlet without changing the overall structure, thereby ensuring stable and efficient operation of the compressor.

[0077] Furthermore, in an optional embodiment, the auxiliary ventilation structure 800 is an expansion hole portion 820 arranged on the inner wall of the main housing 100, and the expansion hole portion 820 is connected to the air intake hole 120; along the direction from the outer wall of the main housing 100 to the air intake port 121, the diameter of the air intake hole 120 has an increasing trend.

[0078] See also Figure 8 、 Figure 9 and Figure 10 As can be seen from the figure, in an optional embodiment, the expanded hole portion 820 is an inclined hole 821; the inclined hole 821 is formed on the bottom wall of the air intake hole 120; and the inclined hole 821 extends from the bottom wall of the air intake hole 120 toward the lower cavity 101 until it penetrates the inner wall of the main housing 100. In an optional embodiment, the inclined hole 821 is a cylindrical hole. It should be noted that the inclined hole 821 can also be a through hole in a shape such as an elliptical hole, as long as the inclined hole 821 can increase the amount of air inhaled from the air intake port 121 to the air hole slot 210. This is merely an example and is not limiting.

[0079] Inside the main housing 100, an inclined hole 821 is expanded obliquely along the inside of the air intake port 121. The inclined position is close to the bottom of the air intake port 120 but is not limited to the bottom. It can be opened in the lower half of the circumference of the air intake port 121. After the flow area inside the air intake port 120 is increased, most of the refrigerant gas entering the air intake port 121 flows directly to the lower cavity 101 of the main housing 100, and then flows to the air hole slot 210 of the frame 200 through the air vent 510 of the motor rotor 500 and the six exhaust grooves 110 on the main housing 100. This arrangement increases the flow area of ​​the air intake port 121 in the main housing 100, and can effectively improve the flow smoothness, improve the intake efficiency, and improve NVH without increasing the number of components.

[0080] Example 3

[0081] See also Figure 11 、 Figure 12 and Figure 13 , which is different from the second embodiment, in this embodiment, the expansion hole portion 820 is a circumferential countersunk hole 822; the circumferential countersunk hole 822 is opened on the inner wall of the main housing 100 opposite to the air intake hole 120; the inner diameter of the circumferential countersunk hole 822 is larger than the inner diameter of the air intake hole 120.

[0082] Optionally, the circumferential counterbore 822 and the suction hole 120 are coaxially arranged.

[0083] Inside the main housing 100, the circumferential inner portion of the air intake port 121 is enlarged to increase the clearance space at the air intake port 121. With the increased flow area within the air intake port 120, the vast majority of the refrigerant gas entering the air intake port 121 flows directly into the lower cavity 101 of the main housing 100, and then flows through the vents 510 of the motor rotor 500 and the six circumferential exhaust grooves 110 of the main housing 100 to the air vent slots 210 of the frame 200.

[0084] In this way, the flow area of ​​the air intake port 121 in the main housing 100 is increased, and the flow smoothness and air intake efficiency can be effectively improved without increasing the number of components, thereby improving NVH.

[0085] Example 4

[0086] See also Figure 14 and Figure 15 As can be seen from the figure, in an optional embodiment, the auxiliary ventilation structure 800 is arranged at a position on the bottom of the stator 400 opposite the air intake 121, and the auxiliary ventilation structure 800 can increase the gap between the air intake 121 and the bottom of the stator 400.

[0087] In an optional embodiment, the auxiliary ventilation structure 800 is a notch portion 830 provided on the bottom of the stator 400 ; the notch portion 830 faces the air inlet 121 ; and extends along the notch portion 830 in the radial direction of the stator 400 and in the axial direction of the stator 400 .

[0088] Specifically, notches 830 are added to the outer shell of the motor stator 400 to increase the flow area between the stator 400 and the air intake 121 of the main housing 100. This allows the vast majority of refrigerant gas entering the air intake 120 to flow directly into the lower cavity 101 of the main housing 100, then through the vents 510 of the motor rotor 500 and the six exhaust grooves 110 on the main housing 100 to the air vent slots 210 of the frame 200. This increases the flow area of ​​the air intake 121 within the main housing 100, effectively improving flow smoothness, enhancing air intake efficiency, and reducing NVH without adding additional components.

[0089] In summary, the embodiments of the present invention provide an electric scroll compressor having at least the following advantages:

[0090] The auxiliary ventilation structure 800 of the electric scroll compressor of the present invention is arranged on the inner wall of the main casing 100 opposite to the air intake port 121, or is arranged on the bottom of the stator 400 opposite to the air intake port 121, so as to increase the air intake volume from the air intake port 121 to the air hole groove 210. In this way, the smoothness of the air flow can be effectively improved, air flow pulsation can be prevented, the air intake efficiency can be improved, and NVH can be improved without increasing the number of components.

[0091] The above are only specific embodiments of the present invention, but the scope of protection of the present invention is not limited to them. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this utility model should be included in the scope of protection of the present utility model. Therefore, the scope of protection of the present utility model should be based on the scope of protection of the claims.

Claims

1. An electric scroll compressor, characterized in that: include: Main casing (100), frame (200), top cover (300), stator (400), rotor (500), moving disk (600), and static disk assembly (700); Along the height direction of the main housing (100), the frame (200) and the top cover (300) are sequentially arranged on the top of the main housing (100); the stator (400) is fixedly arranged in the main housing (100), and a gap is provided between the stator (400) and the bottom of the inner wall of the main housing (100) to form a lower cavity (101); the moving disk (600) is rotatably arranged on the upper part of the frame (200), and the stator assembly (700) is fixedly arranged between the frame (200) and the top cover (300); the rotor (500) and the stator (400) are rotatably matched, and the rotor (500) and the moving disk (600) are eccentrically connected so that the moving disk (600) can perform circumferential translation in the stator assembly (700); A plurality of exhaust grooves (110) are provided on the inner wall of the main housing (100), and each exhaust groove (110) extends along the height direction of the main housing (100); an air intake hole (120) is provided at the bottom of the main housing (100), and the air intake hole (120) passes through from the outer wall of the main housing (100) to one of the exhaust grooves (110), and the air intake hole (120) forms an air intake port (121) on the inner wall of the main housing (100); Along the extension direction of the air intake hole (120), a portion of the orthographic projection of the air intake port (121) faces the bottom of the stator (400), and the other portion of the orthographic projection of the air intake port (121) faces the lower cavity (101); The air intake hole (120) is configured to be able to inhale refrigerant gas, and a portion of the refrigerant gas entering from the air intake port (121) directly flows to the air hole slot (210) on the frame (200) through one of the exhaust grooves (110) communicating with the air intake port (121); another portion of the refrigerant gas entering from the air intake port (121) flows around the lower cavity (101), and then flows to the air hole slot (210) through the air vent (510) of the rotor (500) and a plurality of the exhaust grooves (110); the refrigerant gas flowing through the air hole slot (210) then enters the compression chamber (701) through the stator assembly (700), and is then discharged through the air outlet (310) of the top cover (300) after being compressed; The auxiliary ventilation structure (800) is also included; the auxiliary ventilation structure (800) is arranged at a position on the inner wall of the main housing (100) facing the air inlet (121), or is arranged at a position on the bottom of the stator (400) facing the air inlet (121), so as to increase the amount of air suction from the air inlet (121) to the air hole slot (210).

2. The electric scroll compressor according to claim 1, wherein: The auxiliary ventilation structure (800) is arranged at a position on the inner wall of the main housing (100) facing the air inlet (121); Furthermore, the air intake port (121) is connected to at least one of the other exhaust grooves (110) adjacent to the air intake port (121) through the auxiliary ventilation structure (800).

3. The electric scroll compressor according to claim 2, characterized in that: The auxiliary ventilation structure (800) is a ventilation groove (810) provided on the inner wall of the main housing (100), one end of the ventilation groove (810) is connected to the air intake port (121), and the other end is connected to another exhaust groove (110) adjacent to the air intake port (121).

4. The electric scroll compressor according to claim 1, wherein: The auxiliary ventilation structure (800) is arranged at a position on the inner wall of the main housing (100) facing the air inlet (121); Furthermore, the auxiliary ventilation structure (800) can increase the gap between the air intake (121) and the bottom of the stator (400).

5. The electric scroll compressor according to claim 4, characterized in that: The auxiliary ventilation structure (800) is a reaming portion (820) provided on the inner wall of the main housing (100), and the reaming portion (820) is communicated with the air intake hole (120); Along the direction from the outer wall of the main housing (100) to the air intake port (121), the diameter of the air intake hole (120) has an increasing trend.

6. The electric scroll compressor according to claim 5, characterized in that: The reaming portion (820) is an inclined hole (821); The inclined hole (821) is opened on the bottom wall of the air intake hole (120); and the inclined hole (821) extends from the bottom wall of the air intake hole (120) toward the lower cavity (101) until it passes through the inner wall of the main housing (100).

7. The electric scroll compressor according to claim 5, characterized in that: The reaming portion (820) is a circumferential countersunk hole (822); The circumferential countersunk hole (822) is opened on the inner wall of the main housing (100) directly opposite to the air intake hole (120); the inner diameter of the circumferential countersunk hole (822) is larger than the inner diameter of the air intake hole (120).

8. The electric scroll compressor according to claim 7, characterized in that: The circumferential counterbore (822) and the air suction hole (120) are coaxially arranged.

9. The electric scroll compressor according to claim 4, characterized in that: The auxiliary ventilation structure (800) is arranged at a position on the bottom of the stator (400) facing the air intake port (121), and the auxiliary ventilation structure (800) can increase the gap between the air intake port (121) and the bottom of the stator (400).

10. The electric scroll compressor according to claim 9, characterized in that: The auxiliary ventilation structure (800) is a notch portion (830) provided on the bottom of the stator (400); The notch portion (830) faces the air intake port (121); and the notch portion (830) extends in the radial direction of the stator (400) and in the axial direction of the stator (400).

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