CN117212178A - Air inlet component of scroll compressor, electric scroll compressor and air conditioning system - Google Patents

Abstract

The application provides a vortex compressor air inlet assembly, an electric vortex compressor and an air conditioning system. The vortex compressor air inlet assembly comprises a shell, wherein a motor assembly is arranged in the shell; the two axial ends of the motor component are arranged in a clearance with the inner wall of the shell; at least two air suction ports are arranged on the shell: a first air suction port and a second air suction port; the first air suction port and the second air suction port are arranged along the axial direction of the motor assembly and are respectively communicated with gaps at two axial ends of the motor assembly. According to the application, the air suction ports of the scroll compressor are arranged at the two ends of the motor assembly, so that part of refrigerant passes through the motor assembly and cools the motor assembly, and the other part of refrigerant can directly enter the compression cavity of the pump body assembly, thus the cooling reliability of the motor is ensured, meanwhile, the overheating and pressure loss of the refrigerant are reduced, and the volumetric efficiency of the compressor is improved.

Description

Air inlet component of scroll compressor, electric scroll compressor and air conditioning system

Technical Field

The application belongs to the technical field of electric scroll compressors, and particularly relates to a scroll compressor air inlet assembly, an electric scroll compressor and an air conditioning system.

Background

The aluminum shell scroll compressor is widely applied to an air conditioner of an electric automobile and is generally an electric scroll compressor which is horizontally arranged in the axial direction. As shown in fig. 8, the electric scroll compressor is generally provided with one inlet port, and the refrigerant flow path therein is: the low-temperature low-pressure refrigerant enters the shell through the shell air inlet, the shell is low-pressure, the motor is positioned in the shell low-pressure cavity, then the refrigerant flows through the motor from a gap between the motor and the shell, the motor is cooled, then the refrigerant enters the pump body compression cavity, the compressed high-temperature high-pressure refrigerant is discharged to the front cover, and the compressed high-temperature high-pressure refrigerant is discharged from the front cover air outlet to the compressor.

In the refrigerant flow path, after the refrigerant flows through the motor to cool it, the actual temperature of the motor is much lower than the use limit temperature thereof, and the pressure loss and temperature of the refrigerant flowing through the motor rise. This results in a reduced density of refrigerant entering the compression chamber of the pump body, thereby reducing the amount of suction, reduced refrigeration, and low volumetric efficiency of the compressor.

Disclosure of Invention

Therefore, the application provides the air inlet component of the scroll compressor, the electric scroll compressor and the air conditioning system, which can solve the problems that the density of the refrigerant entering the compression cavity of the pump body is reduced, the air suction amount is reduced, the refrigerating capacity is reduced and the volumetric efficiency of the compressor is low in the prior art.

In order to solve the above problems, the present application provides a scroll compressor air intake assembly comprising:

a housing having a motor assembly disposed therein; the two axial ends of the motor component are arranged in a clearance with the inner wall of the shell;

at least two air suction ports are arranged on the shell: a first air suction port and a second air suction port; the first air suction port and the second air suction port are arranged along the axial direction of the motor assembly and are respectively communicated with gaps at two axial ends of the motor assembly.

In some embodiments of the present application, in some embodiments,

the outer wall of the shell is provided with a liquid storage cavity which is arranged in a sealing way, and the liquid storage cavity is communicated with the first air suction port and the second air suction port at the same time; and the side wall of the liquid storage cavity is provided with an air inlet of the scroll compressor.

In some embodiments of the present application, in some embodiments,

the air inlet and the first air suction port are arranged in a staggered manner; and the air inlet and the second air suction port are arranged in a staggered mode.

In some embodiments of the present application, in some embodiments,

the outer wall of the shell comprises a first position and a second position, the first position is higher than the second position, and the first air suction port and the second air suction port are both arranged on the first position; and an oil return hole is arranged at the second position and is communicated with the shell.

In some embodiments of the present application, in some embodiments,

the oil return hole is communicated with a gap at one axial end of the motor assembly and is positioned at the upstream side of air flow passing through the motor assembly.

In some embodiments of the present application, in some embodiments,

the aperture of the oil return hole is smaller than or equal to 2.5mm.

In some embodiments of the present application, in some embodiments,

the liquid storage cavity is internally provided with a baffle plate, the baffle plate divides the liquid storage cavity into a first cavity and a second cavity which are isolated from each other, the air inlet, the first air suction port, the second air suction port and the oil return hole are all communicated with the first cavity, and the second cavity can accommodate controller components of the scroll compressor.

In some embodiments of the present application, in some embodiments,

the shell is provided with a binding post in a penetrating mode, and the binding post is located in the second cavity and used for electrically connecting the motor assembly and the controller component.

In some embodiments of the present application, in some embodiments,

the liquid storage cavity is formed by enclosing a cover plate and an annular bulge, the bulge is arranged on the outer wall of the shell, the cover plate is buckled on the bulge in a sealing way, and the air inlet is arranged on the bulge or the cover plate.

In some embodiments of the present application, in some embodiments,

the liquid storage cavity is divided into a second cavity, a binding post is arranged in the second cavity, and a controller component of the motor assembly is arranged on the inner side face of the cover plate and is correspondingly connected with the binding post.

According to another aspect of the present application there is provided an electric scroll compressor comprising a scroll compressor air intake assembly as described above.

According to a further aspect of the present application there is provided an air conditioning system comprising a scroll compressor air intake assembly as described above or an electric scroll compressor as described above.

In some embodiments of the present application, in some embodiments,

the air conditioning system further comprises an air inlet flow path communicated with the air suction ports, and at least one air inlet flow path is provided with a regulating valve.

The application provides a vortex compressor air inlet component, which comprises: a housing having a motor assembly disposed therein; the two axial ends of the motor component are arranged in a clearance with the inner wall of the shell; at least two air suction ports are arranged on the shell: a first air suction port and a second air suction port; the first air suction port and the second air suction port are arranged along the axial direction of the motor assembly and are respectively communicated with gaps at two axial ends of the motor assembly.

According to the application, the air suction ports of the scroll compressor are arranged at the two ends of the motor assembly, so that part of refrigerant passes through the motor assembly and cools the motor assembly, and the other part of refrigerant can directly enter the compression cavity of the pump body assembly, thus the cooling reliability of the motor is ensured, meanwhile, the overheating and pressure loss of the refrigerant are reduced, and the volumetric efficiency of the compressor is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. The drawings in the following description are merely exemplary and other implementations drawings may be derived from the drawings provided without inventive effort for a person skilled in the art.

FIG. 1 is a cross-sectional view of a horizontal scroll compressor according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a liquid storage chamber according to an embodiment of the present application;

FIG. 3 is a schematic diagram of another embodiment of a liquid storage chamber;

FIG. 4 is an internal schematic view of an open cover plate of a liquid storage chamber according to an embodiment of the application;

FIG. 5 is a schematic diagram of a structure of a controller component on a cover plate of a liquid storage cavity according to an embodiment of the present application;

FIG. 6 is a schematic diagram of the explosion structure of FIG. 5 according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of an air conditioning system according to an embodiment of the present application;

fig. 8 is a schematic view of an internal structure of a conventional horizontal scroll compressor.

The reference numerals are expressed as:

1. a housing; 11. a first air suction port; 12. a second air suction port; 13. a partition plate; 14. binding posts;

2. a motor assembly; 3. a pump body assembly; 4. an air inlet;

5. a cover plate; 51. a controller component;

6. a liquid storage cavity; 7. an oil return hole; 8. a protrusion; 9. a sealing gasket;

100. a compressor; 101. a first intake flow path; 102. a second intake flow path; 103. a regulating valve; 200. a condenser; 300. a throttle device; 400. an evaporator.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. It should be understood, however, that the construction, proportion, and size of the drawings, in which the present application is practiced, are all intended to be illustrative only, and not to limit the scope of the present application, which should be defined by the appended claims. Any structural modification, proportional change or size adjustment should still fall within the scope of the disclosure without affecting the efficacy and achievement of the present application. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present application, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present application; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present application.

Referring now to fig. 1-7 in combination, a scroll compressor air intake assembly according to an embodiment of the present application includes:

a housing 1 having a motor assembly 2 disposed therein; the two axial ends of the motor component 2 are arranged in clearance with the inner wall of the shell 1;

the shell 1 is provided with at least two air inlets: a first suction port 11 and a second suction port 12; the first air suction port 11 and the second air suction port 12 are provided along the axial direction of the motor assembly 2, and are respectively communicated with gaps at both axial ends of the motor assembly 2.

According to the application, the air suction ports of the scroll compressor 100 are arranged at two ends of the motor assembly 2, and the refrigerant entering the compressor 100 can enter the shell 1 through the first air suction port 11 and the second air suction port 12 respectively, as shown in fig. 1, the first air suction port 11 is communicated with a gap at one axial end of the motor assembly 2, and the second air suction port 12 is communicated with a gap at the other axial end of the motor assembly 2, so that the refrigerant entering through the first air suction port 11 can pass through the motor assembly 2 and cool the motor assembly, and the refrigerant entering through the second air suction port 12 can directly enter into the compression cavity of the pump body assembly 3, thereby ensuring the cooling reliability of the motor, reducing the overheat and the pressure loss of the refrigerant, and improving the volumetric efficiency of the compressor 100.

In some embodiments of the present application, in some embodiments,

a liquid storage cavity which is arranged in a sealing way is arranged on the outer wall of the shell 1 and is simultaneously communicated with the first air suction port 11 and the second air suction port 12; the side wall of the liquid storage cavity is provided with an air inlet 4 of the scroll compressor 100.

In the existing air conditioning system, the refrigerant entering the compressor 100 may have a liquid carrying phenomenon, and the liquid refrigerant may not only dilute the lubricating oil, but also enter the pump body compression cavity from the low-pressure cavity of the casing 1, thereby causing the compressor 100 to malfunction. To avoid this problem, the air conditioning system needs to be additionally provided with a liquid reservoir at the front end of the compressor 100, and the system configuration requirement is high.

According to the application, the liquid storage cavity 6 is arranged on the outer wall of the shell 1, the refrigerant entering the shell 1 can firstly enter the liquid storage cavity 6, the refrigerant containing liquid can be separated in the liquid storage cavity 6, for example, the air inlet 4 is opposite to the outer wall, liquid drops contained in the refrigerant entering the liquid storage cavity 6 are impacted to be separated, the refrigerant gas can have two air inlets to enter the shell 1, and the separated liquid drops are collected in the liquid storage cavity 6, so that the liquid refrigerant entering the pump body assembly 3 is reduced.

The liquid storage cavity 6 is arranged on the shell of the compressor 100, so that the need of an additional liquid storage device which is arranged independently in the traditional structure is reduced, and meanwhile, the liquid storage cavity 6 can ensure the air suction buffering effect and can reduce the air suction pressure pulsation.

In some embodiments of the present application, in some embodiments,

the air inlet 4 and the first air suction port 11 are arranged in a staggered manner; and, the air inlet 4 and the second air suction port 12 are arranged in a staggered manner.

In order to prevent the refrigerant entering through the air inlet 4 from directly entering into the shell 1, the air inlet 4 and the two air inlets are arranged in a staggered mode, so that the liquid refrigerant can be effectively reduced from entering into the pump body assembly 3.

In some embodiments of the present application, in some embodiments,

the outer wall of the shell 1 comprises a first position and a second position, the first position is higher than the second position, and the first air suction port 11 and the second air suction port 12 are both arranged on the first position; and an oil return hole 7 is arranged at the second position, and the oil return hole 7 is communicated with the inside of the shell 1.

Based on compressor 100 casing 1 is the ring body structure, no matter casing 1 is for the level setting or vertical setting, the reservoir on it all can have two positions of position difference, establishes two induction ports and is convenient for derive the gas in the liquid storage chamber 6 in higher first position, and sets up oil return hole 7 in lower second position, then is convenient for discharge the liquid droplet of separation to casing 1 in, lubricated friction pair guarantees compressor 100 reliability.

In some embodiments of the present application, in some embodiments,

the oil return hole 7 communicates with a gap at one axial end of the motor assembly 2 and is located on the upstream side of the air flow passing through the motor assembly 2. More preferably, the aperture of the oil return hole 7 is 2.5mm or less.

The oil return hole 7 is limited at the upstream of the air flow, can ensure that the oil flows back into the shell 1 and then passes through more friction pairs to achieve good lubrication effect.

The oil return holes 7 may be provided at two or more different heights in the gravity direction.

In some embodiments of the present application, in some embodiments,

the liquid storage cavity is internally provided with a baffle plate 13, the liquid storage cavity is divided into a first cavity and a second cavity which are isolated from each other by the baffle plate 13, the air inlet 4, the first air suction port 11, the second air suction port 12 and the oil return hole 7 are all communicated with the first cavity, and the second cavity can accommodate a controller component 51 of the scroll compressor 100.

For the structure of the liquid storage cavity 6 on the outer wall of the shell 1, for example, a partition plate 13 is arranged in the liquid storage cavity 6 to form two mutually isolated cavities, one of which realizes the function of air guiding to the two air suction ports after air intake, and the other of which can be provided with a controller component 51 of the compressor 100, the structure is simplified. Meanwhile, the controller component 51 is arranged on the shell 1, and heat generated by the controller can be taken away by the refrigerant flowing in the shell 1, so that the reliability of the controller is ensured.

In some embodiments of the present application, in some embodiments,

the housing 1 is provided with a binding post 14, and the binding post 14 is located in the second cavity and is used for electrically connecting the motor assembly 2 and the controller component 51.

In the specific structure setting, in the second intracavity that holds controller components and parts 51, set up the terminal 14 of wearing to locate on the casing 1, terminal 14 inner and motor assembly 2 are connected electrically, and outer end and controller components and parts 51 for installation operation is simple and convenient.

In some embodiments of the present application, in some embodiments,

the liquid storage cavity is formed by enclosing a cover plate 5 and an annular bulge 8, the bulge 8 is arranged on the outer wall of the shell 1, the cover plate 5 is buckled on the bulge 8 in a sealing manner, and the air inlet 4 is arranged on the bulge 8 or the cover plate 5.

An annular bulge 8 which is integrally structured with the shell 1 is adopted, a cover plate 5 which is buckled in a sealing way is additionally arranged, and a liquid storage cavity 6 is formed by surrounding; the bulge 8 can be integrally formed with the shell 1, a screw hole is formed in the outer periphery of the bulge 8, the cover plate 5 is buckled on the outer periphery through the sealing gasket 9, and the cover plate is fastened by using screws, so that the assembly of the liquid storage cavity 6 is completed.

For the horizontal compressor 100, the liquid storage chambers 6 may be disposed on the upper side surface or the side surfaces of both sides of the casing 1, and the corresponding air inlets 4 may be disposed on the protrusions 8 or the cover plate 5, and the specific disposition positions may be defined according to the use requirements.

In some embodiments of the present application, in some embodiments,

the liquid storage cavity is divided into a second cavity, a binding post 14 is arranged in the second cavity, and a controller component 51 of the motor assembly 2 is arranged on the inner side surface of the cover plate 5 and is correspondingly connected with the binding post 14.

In the second cavity structure in which the liquid storage cavity 6 is divided to accommodate the controller component 51, the controller component 51 is arranged on the inner side surface of the cover plate 5 and is in butt joint with the binding post 14 in the second cavity, and the controller component 51 and the binding post 14 can be connected in a plug-in mode, so that the assembly and the maintenance are convenient.

According to another aspect of the present application, there is provided an electric scroll compressor 100 comprising the scroll compressor 100 air intake assembly as described above.

According to yet another aspect of the present application, there is provided an air conditioning system comprising the scroll compressor 100 air intake assembly as described above or the electric scroll compressor 100 as described above.

In some embodiments of the present application, in some embodiments,

the air conditioning system further comprises an air inlet flow path communicated with the air suction ports, and at least one air inlet flow path is provided with a regulating valve 103.

Since the compressor 100 has at least two air inlets, and the regulating valve 103 is provided in the air inlet passage communicating with the air inlets, the opening degree of the regulating valve 103 can be adjusted according to the temperature of the motor winding, and the real-time optimization of the volumetric efficiency and reliability of the compressor 100 can be realized.

As shown in fig. 7, the air conditioning system includes a compressor 100, a condenser 200, a throttle device 300, and an evaporator 400, which are circularly connected, and two intake passages into the compressor 100 are provided: a first intake passage 101 and a second intake passage 102, wherein a flow rate adjustment valve 103 is provided in the first intake passage 101 communicating with the first intake port 11 of the housing 1, and a control valve 103 is not provided in the second intake passage 102; when the winding temperature is higher, the opening of the regulating valve 103 is increased, and the motor is radiated to ensure the reliability. When the winding temperature is low, the opening of the regulating valve 103 is reduced to improve the volumetric efficiency.

In practical arrangement, the opening of the regulating valve 103 can be selectively arranged on different air inlet flow paths, such as synchronous arrangement, or the air inlet flow paths which are mainly regulated and controlled by the regulating valve 103 can be regulated according to the temperature of the motor winding, so that the volumetric efficiency and reliability of the compressor 100 can be realized.

It is easy to understand by those skilled in the art that the above embodiments can be freely combined and overlapped without conflict.

The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application. The foregoing is merely a preferred embodiment of the present application, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present application, and these modifications and variations should also be regarded as the scope of the application.

Claims (13)

1. A scroll compressor air intake assembly, comprising:

a housing (1) in which a motor assembly (2) is arranged; the two axial ends of the motor component (2) are arranged in a clearance with the inner wall of the shell (1);

at least two air suction ports are arranged on the shell (1): a first air suction port (11) and a second air suction port (12); the first air suction port (11) and the second air suction port (12) are arranged along the axial direction of the motor assembly (2) and are respectively communicated with gaps at two axial ends of the motor assembly (2).

2. The scroll compressor air intake assembly of claim 1, wherein:

a liquid storage cavity which is arranged in a sealing way is arranged on the outer wall of the shell (1), and the liquid storage cavity is simultaneously communicated with the first air suction port (11) and the second air suction port (12); and an air inlet (4) of the scroll compressor is arranged on the side wall of the liquid storage cavity.

3. The scroll compressor air intake assembly of claim 2, wherein:

the air inlet (4) and the first air suction port (11) are arranged in a staggered mode; and the air inlet (4) and the second air suction port (12) are arranged in a staggered mode.

4. A scroll compressor air intake assembly according to claim 3, wherein:

the outer wall of the shell (1) comprises a first position and a second position, the first position is higher than the second position, and the first air suction port (11) and the second air suction port (12) are both arranged on the first position; and an oil return hole (7) is arranged at the second position, and the oil return hole (7) is communicated with the inside of the shell (1).

5. The scroll compressor air intake assembly of claim 4, wherein:

the oil return hole (7) is communicated with a gap at one axial end of the motor assembly (2) and is positioned at the upstream side of air flow passing through the motor assembly (2).

6. The scroll compressor air intake assembly of claim 4 or 5, wherein:

the aperture of the oil return hole (7) is smaller than or equal to 2.5mm.

7. The scroll compressor air intake assembly of claim 4, wherein:

the liquid storage cavity is internally provided with a partition plate (13), the partition plate (13) divides the liquid storage cavity into a first cavity and a second cavity which are isolated from each other, the air inlet (4), the first air suction port (11), the second air suction port (12) and the oil return hole (7) are all communicated with the first cavity, and the second cavity can accommodate a controller component (51) of the scroll compressor.

8. The scroll compressor air intake assembly of claim 7, wherein:

the shell (1) is provided with a binding post (14) in a penetrating mode, and the binding post (14) is located in the second cavity and used for electrically connecting the motor assembly (2) and the controller component (51).

9. The scroll compressor air intake assembly of any one of claims 2-5 or 7-8, wherein:

the liquid storage cavity is formed by enclosing a cover plate (5) and an annular bulge (8), the bulge (8) is arranged on the outer wall of the shell (1), the cover plate (5) is buckled on the bulge (8) in a sealing mode, and the air inlet (4) is formed in the bulge (8) or the cover plate (5).

10. The scroll compressor air intake assembly of claim 9, wherein:

the liquid storage cavity is divided into a second cavity, a binding post (14) is arranged in the second cavity, and a controller component (51) of the motor assembly (2) is arranged on the inner side surface of the cover plate (5) and is correspondingly connected with the binding post (14).

11. An electric scroll compressor comprising a scroll compressor air intake assembly as claimed in any one of claims 1 to 10.

12. An air conditioning system comprising a scroll compressor air intake assembly according to any one of claims 1 to 10 or an electric scroll compressor according to claim 11.

13. An air conditioning system according to claim 12, wherein:

the air conditioning system further comprises an air inlet flow path communicated with the air suction ports, and at least one air inlet flow path is provided with a regulating valve (103).