CN106989017B

CN106989017B - A kind of compressor

Info

Publication number: CN106989017B
Application number: CN201710295736.XA
Authority: CN
Inventors: 牟英涛; 宋雪峰; 朱浩立; 王玉强
Original assignee: Shanghai Highly New Energy Technology Co Ltd
Current assignee: Shanghai Highly New Energy Technology Co Ltd
Priority date: 2017-04-28
Filing date: 2017-04-28
Publication date: 2020-06-02
Anticipated expiration: 2037-04-28
Also published as: CN106989017A

Abstract

The present invention provides a compressor, comprising: the shell is provided with a first opening and an accommodating space, and the first opening is positioned at one side of the accommodating space; a compression mechanism comprising: the static scroll comprises a low-pressure side provided with a scroll wrap and a high-pressure side back to the scroll wrap; the movable scroll disk is positioned in the accommodating space, one side of the movable scroll disk, which is provided with scroll teeth, is opposite to the scroll teeth of the fixed scroll disk, and the scroll teeth of the fixed scroll disk and the scroll teeth of the movable scroll disk form a compression cavity; the motor mechanism is accommodated in the accommodating space, comprises a motor rotor and a motor stator, and drives the movable scroll disc to rotate relative to the fixed scroll disc so as to compress the refrigerant in the compression cavity, wherein the motor stator is fixedly connected with the low-pressure side of the fixed scroll disc; and the upper bracket is positioned between the motor mechanism and the fixed scroll disk and is fixedly connected with the low-pressure side of the fixed scroll disk.

Description

A kind of compressor

Technical Field

The invention relates to the field of compressors, in particular to a vehicle compressor.

Background

The existing scroll compressor for the vehicle has the following characteristics and defects:

1) the motor stator is assembled on the inner wall of the shell in an interference mode basically, and vibration noise generated by the motor is easy to directly propagate out through the shell when the compressor runs.

2) A die-casting aluminum alloy shell blank is adopted, and a shell finished product is obtained through more machining (machining parts comprise a shell end face, an inner hole for interference assembly of the shell and a motor, a bearing seat hole, an end face and the like). Since the die cast is likely to generate the air holes, if the area of the machined part of the die cast housing is large or the part is large, the air holes are likely to be penetrated in the machining process, and the air tightness of the housing is poor.

3) The compressor suction or discharge is located on the cast part. Compared with high-strength aluminum alloy such as forging or extrusion casting, the common cast aluminum alloy part has low material strength and compactness, so that the thread of the suction or exhaust pressure plate is easy to damage.

4) The prior compressor is basically in a cylinder-like shape, and when the compressor is installed on a vehicle, although the periphery of the compressor body still has some narrow spaces, the compressor body is difficult to be used for arranging other parts. The utilization efficiency of the installation space is not high.

Disclosure of Invention

The present invention has been made to overcome the above-mentioned drawbacks of the prior art, and an object of the present invention is to provide a compressor which can facilitate the assembly of the compressor and enhance the coaxiality between an upper bracket and a stator of a motor. In addition, the reliability of the compressor can be improved, and the noise can be reduced.

Compared with the prior art, the invention has the following advantages:

1) the upper bracket and the motor stator are hung on the static vortex disc and are not in contact with the shell, so that the vibration and noise generated by the motor and the transmission mechanism during the operation of the compressor can be prevented from being directly transmitted out through the shell, and the vibration and noise performance of the whole compressor can be improved.

2) The motor and the inner wall of the shell are not directly assembled, the processing of the inner wall of the shell is cancelled, and the compressor adopting the die-casting aluminum alloy shell can avoid pore through of pores in shell materials when the shell is processed, so that the air tightness of the shell and the whole machine can be improved.

3) The static vortex disk made of wear-resistant high-strength aluminum alloy is used as a part of a shell of the compressor, and an air suction port or an air exhaust port of the compressor is arranged on the static vortex disk, so that the air tightness of the compressor is improved. The air suction port or the air exhaust port of the compressor is positioned on the static vortex disc made of wear-resistant high-strength aluminum alloy, and due to the high material strength and compactness, the thread teeth for mounting the air suction or exhaust pressure plate are not easy to damage.

4) The appearance of compressor is the similar cuboid, under the unchangeable prerequisite of the volume that keeps compressor overall structure, and the similar cuboid appearance is littleer than the shared installation space of similar cylinder appearance, and is higher to installation space's utilization efficiency.

Drawings

The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

Fig. 1 illustrates a perspective view of a compressor according to an embodiment of the present invention.

Fig. 2 shows a cross-sectional view of a compressor according to an embodiment of the present invention.

Fig. 3 illustrates a front view of a compressor according to an embodiment of the present invention.

Fig. 4 is a sectional view taken along line a-a of fig. 3.

Fig. 5 is a sectional view taken along line B-B of fig. 3.

FIG. 6 illustrates an exploded view of a compressor housing according to an embodiment of the present invention.

FIG. 7 illustrates a perspective view of a compressor housing according to an embodiment of the present invention.

FIG. 8 shows a cross-sectional view of a compressor housing according to an embodiment of the invention

FIG. 9 shows a left side view of a compressor housing according to an embodiment of the present invention

Fig. 10 is a cross-sectional view taken along line C-C of fig. 9.

Fig. 11 is an assembled perspective view of a fixed scroll-an upper bracket-a motor mechanism-a lower bracket according to an embodiment of the present invention.

Fig. 12 is a sectional view showing an assembly of the fixed scroll-the upper bracket-the motor mechanism-the lower bracket according to the embodiment of the present invention.

Fig. 13 shows a sectional view of a compressor according to another embodiment of the present invention.

Fig. 14 is an assembled perspective view of a fixed scroll-an upper bracket-a motor mechanism-a lower bracket according to another embodiment of the present invention.

Fig. 15 is a sectional view showing an assembly of a fixed scroll-an upper bracket-a motor mechanism-a lower bracket according to another embodiment of the present invention.

Fig. 16 is an enlarged sectional view showing the assembly of an upper bracket-motor mechanism according to still another embodiment of the present invention.

Fig. 17 shows a sectional view of a compressor according to still another embodiment of the present invention.

Fig. 18 is a partial view T of fig. 17.

Fig. 19 shows a perspective view of a stud according to yet another embodiment of the present invention.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.

To ameliorate the disadvantages of the prior art, the present invention provides a compressor, preferably a scroll compressor for an electric vehicle. The embodiments are described below by taking as an example a compressor of a vertical structure, i.e., a shafting transmission mechanism and a scroll pump axis are arranged vertically, but the invention is not limited thereto.

An embodiment of the present invention will be described first with reference to fig. 1 to 12. Fig. 1 illustrates a perspective view of a compressor according to an embodiment of the present invention. Fig. 2 shows a cross-sectional view of a compressor according to an embodiment of the present invention. Fig. 3 illustrates a front view of a compressor according to an embodiment of the present invention. Fig. 4 is a sectional view taken along line a-a of fig. 3. Fig. 5 is a sectional view taken along line B-B of fig. 3. FIG. 6 illustrates an exploded view of a compressor housing according to an embodiment of the present invention. FIG. 7 illustrates a perspective view of a compressor housing according to an embodiment of the present invention. FIG. 8 shows a cross-sectional view of a compressor housing according to an embodiment of the present invention. Fig. 9 shows a left side view of a compressor housing according to an embodiment of the invention. Fig. 10 is a cross-sectional view taken along line C-C of fig. 9. Fig. 11 is an assembled perspective view of a fixed scroll-an upper bracket-a motor mechanism-a lower bracket according to an embodiment of the present invention. Fig. 12 is a sectional view showing an assembly of the fixed scroll-the upper bracket-the motor mechanism-the lower bracket according to the embodiment of the present invention.

In the present embodiment, the compressor includes a casing 3, a compression mechanism including a fixed scroll 2 and an orbiting scroll 15, and a motor mechanism. Preferably, the compressor further comprises an upper cover 1.

The housing 3 has a first opening and an accommodating space. The first opening is located at one side of the accommodating space, and in the embodiment shown in fig. 2, the first opening is located at the upper side of the accommodating space. Optionally, the housing 3 is a casting. The housing 3 includes a retaining wall 308, and the retaining wall 308 divides the accommodating space into a low pressure chamber 309 and the controller chamber 302. The low pressure chamber 309 houses the motor mechanism. The controller chamber 302 is provided with a second opening. In the embodiment shown in fig. 2, the second opening is located on the left side of the controller cavity 302. The compressor also comprises a controller chamber cover 4 and an electric control component. The controller chamber cover 4 seals the second opening. In particular, the container cover 4 and the housing 3 are sealed and fastened by means of a sealing ring 9 (or sealing gasket, or sealant) and a bolt 10. The electrical control components are disposed in the controller chamber 302 between the controller chamber cover 4 and the retaining wall. Preferably, the retaining wall 308 is provided with a cavity 305 that opens toward the controller chamber 302. The electronic control component optionally comprises a first electronic control component and a second electronic control component. The first electrically controlled component is received in the cavity 305. The first electronically controlled component includes, but is not limited to, one or more of the following: a capacitor, an inductor and a relay. The second electrically controlled component is disposed in a portion of the space outside the cavity 305 in the controller chamber 302. The second electrically controlled member is attached to the portion of the wall 308 except the cavity 305. The second electrically controlled component comprises a power element. Specifically, the cavity 305 is provided at a position not interfering with the components in the low pressure chamber 309 on the low pressure chamber 309 side, the power element on the controller chamber 302 side is fitted to the portion of the retaining wall 308 of the casing 3 where the cavity 305 is not provided, the refrigerant flowing from the suction chamber 203 in the low pressure chamber 309 flows through the retaining wall 308, and the refrigerant absorbs heat emitted from the power element, thereby cooling the power element. In this way, the excess space in the low pressure chamber 309 is divided by the retaining wall 308 of the housing 3 for accommodating the electric control component, so as to reduce the width L2 of the controller chamber 302 portion, thereby realizing the miniaturization of the scroll compressor. And the remaining second electrical control members not disposed in the cavity 305 may not be attached to the retaining wall 308.

The fixed scroll 2 is provided on a side of the casing 3 close to the first opening. In the embodiment shown in fig. 2, the fixed scroll 2 is disposed at the first opening on the upper side of the casing. The fixed scroll 2 comprises a low pressure side 202 provided with a wrap 201 and a high pressure side 206 facing away from the wrap 201. A low pressure side 202 of the fixed scroll 2 is opposite to a first opening of the casing 3 to form an accommodation space. Preferably, the housing 3 and the low pressure side 202 of the fixed scroll 2 form an accommodating space which is optionally a cuboid-like shape. However, the present invention is not limited thereto, and the accommodating space may also be shaped like a cylinder, a cube, or the like. Optionally, the housing 3 and the fixed scroll 2 are sealed and fastened by a sealing ring 7 (or a sealing gasket or a sealing glue) and a bolt 8. Preferably, the fixed scroll is a wear-resistant high-strength aluminum alloy member such as a forged aluminum alloy, an extrusion cast aluminum alloy, or the like (wherein the high-strength aluminum alloy member has a material strength and a compactness superior to those of a conventional cast member). Optionally, one or more mounting

legs

207, 303 are further provided on the fixed scroll 2 and the housing 3 to mount the compressor in an electric vehicle.

A high pressure chamber 2014 is formed between upper cover 1 and high pressure side 206 of fixed scroll 2. The high-pressure cavity 2014 is internally provided with an exhaust valve plate 30 and an exhaust baffle. Optionally, the sealing and fastening of the upper cover 1 and the fixed scroll 2 are realized by a sealing ring 5 (or a sealing gasket or a sealing glue) and a bolt 6. A suction chamber 203 is also formed at the low pressure side 202 of the fixed scroll 2. The fixed scroll 2 is also provided with an exhaust port 2012 communicating with the high pressure chamber 2014 and an intake port 2010 communicating with the intake chamber 203. The stationary scroll 2 is also provided with a suction screw hole 2011 and an exhaust screw hole. The suction chamber 203 communicates with the suction port 2010. In other words, the stationary scroll 2 made of a high-strength aluminum alloy is a part of a compressor casing, and the suction port 2010 and the discharge port 2012 of the compressor are provided in the stationary scroll 2. Since the material strength and compactness of the high-strength aluminum alloy, such as a material for forging or extrusion casting, are superior to those of the casting, the airtightness and the screw strength of the suction port 2010 and the exhaust port 2012 are better. Meanwhile, the machined part and the machined area of the cast shell 3 are small, the air tightness of the shell 3 is better, and the air tightness of the whole machine can be improved.

The orbiting scroll 15 is located in the accommodating space. The side of the orbiting scroll 15 provided with the wrap 1501 is opposite to the low pressure side 202 of the fixed scroll 2, and the wrap 201 of the fixed scroll 2 and the wrap 1501 of the orbiting scroll 15 form a compression chamber.

The motor mechanism includes a motor rotor 20 and a motor stator 12. The motor mechanism is located in a low pressure chamber 309 in the receiving space. The motor mechanism is used for driving the movable scroll 15 to rotate relative to the fixed scroll 2 so as to compress the refrigerant in the compression cavity.

Specifically, the compressor refrigerant passage is: refrigerant enters a suction chamber 203 through a suction port 2010, the suction chamber 203 is communicated with a low pressure chamber 309, the refrigerant flows into a low pressure side 202 of the fixed scroll after passing through the low pressure chamber 309, then flows into a compression chamber formed by the fixed scroll wrap 201 and the orbiting scroll wrap 1501 to be compressed, the compressed refrigerant flows into a high pressure chamber 2014 through a discharge hole 209, and then the refrigerant is discharged into a discharge port 2012 communicated with the high pressure chamber 2014. Further, the refrigerant flows into the compressor from the suction port 2010 of the fixed scroll 2 and flows back to the bottom wall of the casing 3 toward the fixed scroll, passes through the retaining wall 308 of the casing 3 to cool the electric control part in the controller chamber 302, and flows through the motor mechanism to cool the motor mechanism, and then flows into the compression chamber formed by the fixed scroll 2 and the movable scroll 15.

As described above, the compressor provided by the present invention is preferably of a vertical structure, since the housing space in the housing is rectangular, the length of the whole compressor is shorter than that of a horizontal compressor, and the compressor is kept horizontal, and occupies less horizontal installation space when installed on an electric vehicle, and a more stable lubricating oil pool 31 can be formed at the bottom of the low pressure cavity 309 of the compressor, so that the compressor has better lubricating effect, the reliability of the compressor can be improved, and the oil discharge amount of the compressor can be reduced. In addition, if solid impurities enter the compressor through the suction port 2010 and the suction cavity 203, the impurities are preferentially deposited at the lower part of the low-pressure cavity 309, so that the probability of the impurities entering a pump body compression cavity formed by the fixed scroll 2 and the movable scroll 15 is low, and the risk of damage to the pump body caused by the impurities entering can be greatly reduced.

Further, in the embodiment of the present invention, the motor stator 12 is fixedly connected to the low pressure side 202 of the fixed scroll 2. Specifically, as shown in fig. 12, the low-pressure side 202 of the fixed scroll 2 has a plurality of bosses 205. Each boss 205 is provided with a threaded hole 208. Alternatively, the fixed scroll 2 includes four bolt through holes 208, and a central line of the four bolt through holes 208 forms a square shape, but the present invention is not limited thereto. The motor stator 12 is provided with a plurality of first bolt through holes corresponding to the screw holes 208. The bolt 35 passes through the first bolt through hole and the screw hole 208 to fixedly connect the fixed scroll 2 with the motor stator 12.

Further, the compressor further includes an upper bracket 11 and a lower bracket 13. The upper bracket 11 and the lower bracket 13 are provided with through holes for the bearing mechanism to pass through.

As shown in fig. 2 and 12, the upper bracket 11 is located between the motor mechanism and the fixed scroll 2, and is fixedly connected to the low-pressure side 202 of the fixed scroll 2. Specifically, the bolt 29 passes through a bolt through hole provided in the upper bracket 11 and a screw hole 2015 provided in the fixed scroll 2 to connect and fix the upper bracket 11 and the low-pressure side 202 of the fixed scroll 2.

In the embodiment of the invention, the upper bracket 11 and the motor stator 12 are directly connected and fixed on the low-pressure side of the fixed scroll 2, so that the upper bracket and the motor stator have good coaxiality after being installed. And upper bracket 11 and motor stator 12 all hoist and mount on static vortex dish 2, and upper bracket 11, motor stator 12 are all contactless with casing 3, can avoid during the compressor operation vibration and the noise that motor and drive mechanism produced directly to spread through casing 3 to can improve the vibration and the noise performance of whole machine. Because the interference fit between the motor stator 12 and the shell 3 is eliminated, the requirement on the precision of the parts of the shell 3 and the motor stator 12 can be relaxed, and the production cost can be reduced. In addition, the mounting structure can also realize visual inspection of all internal parts in the assembly process of the compressor, and can reduce the misoperation probability in the assembly operation. Therefore, the mounting structure can optimize the part processing and assembling mode of the compressor, and is beneficial to reducing the production cost.

The lower bracket 13 is located at a side of the accommodating space far away from the first opening. In the embodiment shown in fig. 2, 7 and 8, the lower bracket 13 is located at the lower side of the accommodating space, and the lower bracket 13 is integrally formed with the housing 3 as a part of the housing 3. In other words, the lower bracket 13 is formed by casting together with the housing 3 through a mold, and the two can be regarded as a single body. The structure of the lower bracket and the shell which are integrally formed not only can facilitate the assembly of the compressor and reduce the manufacturing cost of the additional lower bracket, but also is beneficial to the positioning of parts such as a bearing mechanism, a crankshaft of a motor and the like and the enhancement of the coaxiality of related parts.

Further, reference is made to fig. 13-15 in conjunction with the above-described figures. Fig. 13 shows a sectional view of a compressor according to another embodiment of the present invention. Fig. 14 is an assembled perspective view of a fixed scroll-an upper bracket-a motor mechanism-a lower bracket according to another embodiment of the present invention. Fig. 15 is a sectional view showing an assembly of a fixed scroll-an upper bracket-a motor mechanism-a lower bracket according to another embodiment of the present invention. Specifically, unlike the embodiment shown in fig. 2 and 12 described above, in this embodiment, the lower bracket 13 is not integrally formed with the housing 3. As shown in fig. 15, the lower bracket 13 is located on a side of the motor stator 12 away from the fixed scroll 2, the lower bracket 13 is further provided with a plurality of second bolt through holes corresponding to the screw holes 208, and the bolts 35 sequentially pass through the second bolt through holes, the first bolt through holes and the screw holes 208 to connect and fix the upper bracket 11, the motor stator 12 and the lower bracket 13. This embodiment can achieve similar effects to those of the embodiments shown in fig. 1 to 12, and will not be described herein.

Further, reference is made to FIG. 16 in conjunction with the above-described figures. Fig. 16 is an enlarged sectional view showing the assembly of an upper bracket-motor mechanism according to another embodiment of the present invention. Specifically, unlike the embodiment shown in fig. 13 to 15 described above, the compressor may further include a guide post 36. The bolt 35 passes through the guide post 36 such that the guide post 36 is located between the bolt 35 and the inner wall of the first bolt through hole of the motor stator 12. The guide post 36 is interference fitted with the first bolt through hole. One end of the guide post 36 abuts against the fixed scroll 2, and the other end of the guide post 36 abuts against the lower bracket 11. Therefore, the problem of poor coaxiality of the bearing holes of the upper bracket and the lower bracket caused by poor parallelism of two end surfaces of the motor stator 12 or poor flatness of the end surface of the motor stator 12 can be solved, so that the assembly precision of the upper bearing and the lower bearing can be improved, and the efficiency of the compressor can be improved. Preferably, the axial length of the guide post 36 may be greater than the axial length of the first bolt through bore. Specifically, the two ends of the guide post 36 are flatly abutted against the upper bracket and the lower bracket, and a certain distance is left between the motor stator 12 and the upper bracket.

A compressor according to still another embodiment of the present invention will be described with reference to fig. 17 to 19. Fig. 17 shows a sectional view of a compressor according to still another embodiment of the present invention. Fig. 18 is a partial view T of fig. 17. Fig. 19 shows a perspective view of a stud according to yet another embodiment of the present invention.

Similar to the aforementioned compressor, in the present embodiment, the compressor includes a housing 3, a compression mechanism, and a motor mechanism. The housing 3 has a first opening. The compression mechanism includes a fixed scroll 2 and an orbiting scroll 3. A low pressure side 202 of the fixed scroll 2 is opposite to a first opening of the casing 3 to form an accommodation space. The motor mechanism comprises a motor rotor and a motor stator 12 which are positioned in the accommodating space. The motor stator 12 is fixedly connected with the fixed scroll 2 through an upper bracket 11.

In the present embodiment, the motor stator 12 is connected to the terminals 21 through the motor lead-out wires 1201, and is connected to the electric control components in the controller chamber 302 through the stationary plate wiring through-hole 2106 and the case wiring through-hole 3010. Terminal 21 is located between the inner wall of casing 3 on the side close to the first opening and the outer wall of motor stator 12, and is far from oil pool 31 (i.e. located at the top of the accommodating space formed by casing 3 and fixed scroll 2). Specifically, the post 21 includes a post 2101 and an end plate 2102. The end plate 2102 is provided with a through hole through which the post 2101 passes. The motor lead-out 1201 includes a terminal 1202 electrically connected to the post 2101 and an insulating shield 1203 covering the outside of the terminal 1202. The exterior of the post 2101 between the insulating shield 1203 and the end plate 2102 surrounds an insulating sheath 2104. The inner diameter of insulating sheath 2104 is less than the diameter of post 2101. Alternatively, a post 21 is provided on the fixed scroll 2. Specifically, the fixed scroll 2 is provided with a through hole through which the post 2101 of the terminal post 21 passes, and a groove provided around the through hole through which the post 2101 of the terminal post 21 passes and opened toward the motor mechanism, in the fixed scroll 2. The surface of the end plate 2102 facing away from the motor mechanism is in contact with the bottom wall of the recess. Optionally, a wiring cover 2105 is further included, and the wiring cover 2105 covers the end face of the groove provided on the back surface of the fixed scroll 2 to protect the wiring terminals 21 and wires connected to the controller.

In the present embodiment, since motor stator 12 is fixedly connected to fixed scroll 2 and terminal 21 is also fixedly connected to fixed scroll 2, the positional relationship between motor stator 12 and terminal 21 has been fixed, and fixed scroll 2 and casing 3 have not been assembled yet, there is sufficient operating space for assembling motor lead-out wire 1201 and terminal 21. With the use of lead wires 1201 of appropriate length, the length of the lead wires 1201 is ensured to be just long enough to mount the terminals 1202 on the posts 2101 of the post 21, with little redundancy in the length of the lead wires 1201. When the terminal 1202 is mounted on the post 21, the insulating sheath 2104 is sleeved on the outer portion of the cylinder 2101, and the inner diameter of the insulating sheath 2104 is smaller than the outer diameter of the cylinder 2101, so that the inner hole of the insulating sheath 2104 can be closely attached to the outer surface of the cylinder 2101. Terminal 1201 is then mounted on post 2101 and insulation shield 1203 is compressed to elastically deform insulation shield 2104 and ensure a snug fit between insulation shield 1203 and insulation shield 2104 and between insulation shield 2104 and end plate 2102. The assembly of the motor lead-out wire 1201 and the terminal post 21 is completed. And then the fixed scroll 2 and the shell 3 are fastened and installed through bolts to form a closed cavity.

The fixed scroll 2 serves as a part of a housing of the compressor, and a terminal 21 is installed inside the fixed scroll 2. The motor stator 12 is indirectly mounted on the fixed scroll 2 through the upper bracket 11. The mounting mode has the advantages that the assembling position relation between the motor lead-out wire 1201 and the terminal 21 is determined before the fixed scroll 2 and the shell 3 are mounted to form a closed cavity, and the assembling position relation between the motor lead-out wire 1201 and the terminal 21 is not changed after the fixed scroll 2 and the shell 3 are mounted to form the closed cavity. Before the fixed scroll 2 and the shell 3 are installed to form a closed cavity, the length of the motor lead-out wire 1201 can be accurately calculated according to the positions of the installation points of the motor lead-out wire 1201 and the binding post 21, the length of the lead-out wire 1201 is ensured to be not redundant after the motor lead-out wire 1201 and the binding post 21 are assembled, the position of the lead-out wire 1201 can be well fixed, and the shaking of the motor lead-out wire 1201 caused by the vibration of a compressor is basically eliminated. The possibility that the motor lead-out wire 1201 touches peripheral parts or the compressor shell is almost zero, and the insulation and the reliability of the compressor are greatly improved. And only necessary electrical safety clearance needs to be reserved when the compressor shell 3 and the motor lead-out wire 1201 are designed, which is beneficial to the miniaturization of the compressor.

Because the installation positions of the terminal 21 and the motor lead-out wire 1201 are far away from the oil pool and are positioned at the top of the inner side of the compressor, if liquid refrigerant containing lubricating oil or trace moisture and impurities exists in the compressor, the liquid refrigerant is accumulated from the bottom of the inner side of the compressor, and only when the liquid refrigerant almost fills the inner cavity of the compressor, the liquid refrigerant can be soaked in the connecting part of the terminal 21 and the motor lead-out wire 1201. Therefore, when the terminal 21 and the motor lead-out wire 1201 are mounted on the top of the inside of the compressor, the probability that the connection part of the terminal 21 and the motor lead-out wire 1201 is immersed in the liquid refrigerant is lower than that when the terminal 21 and the motor lead-out wire 1201 are mounted at other positions, and the insulation performance of the compressor is better.

Meanwhile, the assembly process between the motor lead-out wire 1201 and the wiring terminal 21 is completed in an open environment of the compressor shell, so that sufficient operation space is provided, the whole assembly process is visual, the convenience of assembly and inspection operation can be greatly improved, the misoperation probability in the operation can be reduced, and the production efficiency is improved.

Further, since the terminal 21 is installed on the low pressure side of the fixed scroll 2 and the pressure inside the compressor is greater than the external pressure, the difference in pressure inside and outside the compressor acts on the terminal end plate 2102 and forces the end plate 2102 to abut against the inner wall of the recess of the fixed scroll 2. The sealing member 2103 of the terminal 21 does not need to exert too much pressure on the terminal end plate 2102 to achieve a good seal between the terminal 21 and the low-pressure side end face of the fixed scroll 2. Therefore, compared with the installation mode that the terminal 21 is installed from the outer side of the compressor, when the terminal 21 is installed on the low-pressure side end surface of the fixed scroll 2, the stress condition between the terminal 21 and the sealing member 2103 is better, the strength requirement on the terminal 21 and the sealing member 2103 is not very high, and the light weight and the low cost of related parts are facilitated.

In addition, an insulation protection device is added at the connecting part of the motor lead wire 1201 and the terminal 21, wherein an insulation shield 1203 is added outside the lead wire terminal 1202, and an insulation sheath 2104 is added outside a terminal cylinder 2101 between the insulation shield 1203 and the end plate 2102. The two insulation protection devices can further reduce the possibility that the conductive parts of the motor lead-out wire 1201 and the binding post 21 are exposed to the environment containing refrigerant, lubricating oil and possibly containing trace moisture and impurities, thereby improving the insulation performance of the compressor.

Compared with the prior art, the invention has the following advantages:

1) the upper bracket and the motor stator are hung on the static vortex disc, so that the upper bracket and the motor stator are not contacted with the shell, and the vibration and noise generated by the motor and the transmission mechanism during the operation of the compressor can be prevented from being directly transmitted out through the shell, thereby improving the vibration and noise performance of the whole compressor.

Exemplary embodiments of the present invention are specifically illustrated and described above. It is to be understood that the invention is not to be limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the scope of the appended claims.

Claims

1. A compressor, characterized in that the compressor is an electric vertical scroll compressor for a vehicle, comprising:

the casing (3) is provided with a first opening and an accommodating space, the first opening is positioned on one side of the accommodating space, the casing (3) comprises a retaining wall (308), the retaining wall (308) divides the accommodating space into a low-pressure cavity (309) and a controller cavity (302) which are mutually independent, the casing (3) and the retaining wall (308) of the casing (3) are integrally formed, and the retaining wall (308) is provided with a concave cavity (305) which is opened towards the controller cavity (302);

a compression mechanism comprising:

the fixed scroll (2) comprises a low-pressure side (202) provided with a scroll wrap (201) and a high-pressure side (206) back to the scroll wrap (201), and an accommodating space formed by the shell (3) and the low-pressure side (202) of the fixed scroll (2) is similar to a cuboid;

the movable scroll disk (15) is positioned in the accommodating space, one side, provided with scroll teeth (1501), of the movable scroll disk (15) is opposite to the scroll teeth (201) of the fixed scroll disk (2), and the scroll teeth (201) of the fixed scroll disk (2) and the scroll teeth (1501) of the movable scroll disk (15) form a compression cavity;

the motor mechanism is accommodated in the low-pressure cavity (309), comprises a motor rotor (20) and a motor stator (12), and drives the movable scroll (15) to rotate relative to the fixed scroll (2) so as to compress the refrigerant in the compression cavity, wherein the motor stator (12) is fixedly connected with the low-pressure side (202) of the fixed scroll (2); and

the upper bracket (11) is positioned between the motor mechanism and the fixed scroll disc (2) and is fixedly connected with a low-pressure side (202) of the fixed scroll disc (2);

the low-pressure side of the fixed scroll disk (2) is also provided with a plurality of bosses (205), each boss (205) is provided with a threaded hole (208), the motor stator (12) is provided with a plurality of first bolt through holes corresponding to the threaded holes (208), bolts (35) penetrate through the first bolt through holes and the threaded holes (208) to fixedly connect the fixed scroll disk (2) and the motor stator (12), the low-pressure side (202) of the fixed scroll disk (2) is also provided with a plurality of threaded holes (2015), and bolts (29) penetrate through the upper bracket (11) and the threaded holes (2015) arranged in the fixed scroll disk (2) to fixedly connect the upper bracket (11) and the low-pressure side (202) of the fixed scroll disk (2);

the lower support (13) is positioned on one side, away from the fixed scroll disc (2), of the motor stator, the lower support (13) is provided with a plurality of second bolt through holes corresponding to the threaded holes (208), and bolts (35) sequentially penetrate through the second bolt through holes, the first bolt through holes and the threaded holes (208) so as to fixedly connect the upper support (11), the motor stator (12) and the lower support (13);

the motor stator (12) is connected to a binding post (21) through a motor lead-out wire (1201), and the binding post (21) is positioned between the inner wall of the shell (3) close to one side of the first opening and the outer wall of the motor stator (12);

the binding post (21) is arranged on the fixed scroll (2);

an electronic control component disposed within the controller cavity (302), the electronic control component comprising:

a first electrically controlled component housed in said cavity (305);

and the second electric control component is arranged in a partial space outside the concave cavity (305) in the controller cavity (302) and is attached to the retaining wall (308), wherein the refrigerant passes through the retaining wall (308) of the shell (3) to cool the electric control component in the controller cavity (302), and the refrigerant flows through the motor mechanism to cool the motor mechanism.

2. The compressor of claim 1, further comprising:

the guide post (36) is a through cylinder, the bolt (35) penetrates through the guide post (36), the guide post (36) is located between the bolt (35) and the inner wall of a first bolt through hole of the motor stator (12), one end of the guide post (36) is abutted to the fixed scroll (2), and the other end of the guide post (36) is abutted to the lower support (11).

3. The compressor of claim 2, wherein the guide post (36) has an axial length greater than an axial length of the first bolt through bore.

4. The compressor according to claim 1, wherein the fixed scroll (2) is disposed at a side of the casing (3) close to the first opening, and a low pressure side (202) of the fixed scroll (2) is opposite to the first opening of the casing (3) to form the accommodation space.

5. The compressor according to claim 4, wherein the fixed scroll (2) is an aluminum alloy forged piece or an aluminum alloy extruded cast piece, the compressor further comprising:

an upper cover (1), a high pressure cavity (2014) is formed between the upper cover (1) and a high pressure side (206) of the fixed scroll (2);

a low pressure side (202) of the fixed scroll (2) is further formed with a suction chamber (203) in which,

the fixed scroll (2) is also provided with an exhaust port (2012) communicated with the high-pressure cavity (2014) and an air suction port (2010) communicated with the air suction cavity (203).

6. Compressor according to claim 1, characterized in that the control chamber (302) is provided with a second opening,

the compressor further includes:

a controller chamber cover (4), the controller chamber cover (4) sealing the second opening.

7. The compressor of claim 1, wherein the first electronically controlled component includes one or more of: capacitors, inductors and relays; the second electric control component comprises a power element, wherein the power element is attached to the retaining wall (308).

8. The compressor of claim 1, wherein the terminal post comprises an end plate (2102) and a post (2101) passing through the end plate (2102); the fixed scroll disc (2) is provided with a through hole for the column body (2101) to pass through, and a groove which surrounds the through hole and is opened towards the motor mechanism; the surface of the end plate (2102) facing away from the motor mechanism is in contact with the bottom wall of the groove.