WO2018196487A1

WO2018196487A1 - Compressor

Info

Publication number: WO2018196487A1
Application number: PCT/CN2018/078335
Authority: WO
Inventors: 宋雪峰; 王玉强; 牟英涛; 朱浩立
Original assignee: 上海海立新能源技术有限公司
Priority date: 2017-04-28
Filing date: 2018-03-07
Publication date: 2018-11-01
Also published as: CN107013463A; CN107013463B

Abstract

Provided is a compressor, comprising: a housing (3), which is provided with an accommodation space; a compression mechanism, which comprises a static scroll plate (2) comprising a low-pressure side (202) provided with scroll teeth (201) and a high-pressure side (206) facing away from the scroll teeth (201), and a movable scroll plate (15) located in the accommodation space, wherein a side of the movable scroll plate (15) provided with scroll teeth (1501) is opposite the scroll teeth (201) of the static scroll plate (2), and the scroll teeth (201) of the static scroll plate (2) and the scroll teeth (1501) of the movable scroll plate (15) form a compression cavity; an electric motor mechanism, which is accommodated in the accommodation space, comprises an electric motor rotor (20) and an electric motor stator (12), and drives the movable scroll plate (15) to rotate relative to the static scroll plate (2), so as to compress refrigerant in the compression cavity; an upper support (11), which is connected and fixed to the low-pressure side (202) of the static scroll plate (2); and a lower support (13), which is connected and fixed to the upper support (11) via the electric motor stator (12). The compressor has the advantages of high reliability and low noise.

Description

a compressor

Technical field

The present invention relates to the field of compressors, and more particularly to a compressor for a vehicle.

Background technique

The existing scroll compressors for vehicles have the following characteristics and disadvantages:

1) Basically, the stator of the motor is assembled to the inner wall of the casing. When the compressor is running, the vibration and noise generated by the motor are easily transmitted directly through the casing.

2) The die-cast aluminum alloy shell blank is used to obtain the finished shell by machining more (the machining part includes the end face of the casing, the inner hole of the casing and the motor, and the bearing seat hole and the end face, etc.). Since the die-casting part is likely to generate air holes, if the machining part of the die-casting housing has a large area or a large number of parts, the air hole may be penetrated during the processing, resulting in poor airtightness of the housing.

3) The compressor suction or exhaust port is located on the cast part. Since ordinary cast aluminum alloy parts are not high in material strength and compactness compared with high-strength aluminum alloys such as forging or extrusion casting, the thread of the suction or exhaust pressure plate is easily broken.

4) The external structure of the existing compressor is basically a cylinder type. Although there are some narrow spaces around the compressor body when it is installed on the vehicle, it is difficult to arrange other components. Therefore, the utilization efficiency of the installation space is not high.

Summary of the invention

SUMMARY OF THE INVENTION In order to overcome the deficiencies of the prior art described above, the present invention provides an electric compressor for a vehicle which can improve compressor reliability and reduce noise.

The present invention provides a compressor comprising: a housing having an accommodating space; and a compression mechanism comprising: a fixed scroll including a low pressure side provided with a wrap and a high pressure side facing away from the wrap; a disk, the orbiting scroll is located in the accommodating space, a side of the movable scroll having a wrap is opposite to a wrap of the fixed scroll, and a wrap of the fixed scroll Forming a compression chamber with the wrap of the orbiting scroll; the motor mechanism is received in the accommodating space, and includes a motor rotor and a motor stator, and drives the movable scroll to rotate relative to the fixed scroll And compressing the refrigerant in the compression chamber; the upper bracket is fixedly connected to the low pressure side of the fixed scroll; and the lower bracket is fixedly connected to the upper bracket by the motor stator.

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

1) The upper bracket, the motor stator and the lower bracket are mounted together on the fixed scroll, and the upper bracket, the motor stator and the lower bracket are not in contact with the housing, which can avoid the vibration and noise generated by the motor and the transmission mechanism when the compressor is running. It is transmitted directly through the housing, which can improve the vibration and noise performance of the whole machine.

2) There is no direct assembly relationship between the motor and the inner wall of the housing, and the processing of the inner wall of the housing is eliminated. The compressor using the die-cast aluminum alloy housing can prevent the air holes in the inner material of the housing material from being penetrated during the processing of the housing, thereby enabling Improve the airtightness of the housing and the whole machine.

3) The static scroll of the wear-resistant high-strength aluminum alloy is used as a part of the compressor casing, and the suction port or the exhaust port of the compressor is arranged thereon to improve the airtightness of the compressor. The suction or exhaust port of the compressor is located on the fixed scroll of the wear-resistant high-strength aluminum alloy. Due to its high material strength and compactness, the thread of the suction or exhaust platen is not easily damaged.

4) The shape of the compressor is a rectangular parallelepiped. Under the premise of keeping the volume of the overall structure of the compressor constant, the shape of the rectangular parallelepiped is smaller than the installation space occupied by the cylindrical shape, and the utilization efficiency of the installation space is higher.

DRAWINGS

The above and other features and advantages of the present invention will become more apparent from the detailed description of the exemplary embodiments.

FIG. 1 shows a perspective view of a compressor in accordance with an embodiment of the present invention.

2 shows a cross-sectional view of a compressor in accordance with an embodiment of the present invention.

Figure 3 is a partial view F of Figure 2.

Figure 4 is a partial view G of Figure 2.

Figure 5 shows a front view of a compressor in accordance with an embodiment of the present invention.

Fig. 6 is a cross-sectional view taken along line A-A of Fig. 5;

Fig. 7 is a cross-sectional view taken along line B-B of Fig. 5;

Figure 8 shows an exploded view of a compressor housing in accordance with an embodiment of the present invention.

Figure 9 shows a front view of a compressor housing in accordance with an embodiment of the present invention.

Figure 10 is a cross-sectional view taken along line C-C of Figure 9;

Figure 11 shows a perspective view of an upper bracket-motor mechanism-lower bracket assembly in accordance with an embodiment of the present invention.

Figure 12 shows a bottom view of the upper bracket-motor mechanism-lower bracket assembly in accordance with an embodiment of the present invention.

Figure 13 is a cross-sectional view taken along line D-D of Figure 12;

Figure 14 shows a bottom view of the interior of a compressor housing in accordance with an embodiment of the present invention.

Fig. 15 is a sectional view taken along line E-E of Fig. 14;

Figure 16 is a perspective view showing a perspective view of an upper bracket according to an embodiment of the present invention.

Figure 17 is a cross-sectional view showing the upper bracket-motor mechanism-lower bracket assembly in accordance with another embodiment of the present invention.

Figure 18 is a partial view T of Figure 17.

Figure 19 is a perspective view of the internal components of the compressor housing in accordance with yet another embodiment of the present invention.

Figure 20 shows a cross-sectional view of a compressor in accordance with yet another embodiment of the present invention.

Figure 21 is a partial view O of Figure 20.

Figure 22 shows a perspective view of a terminal in accordance with yet another embodiment of the present invention.

detailed description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be embodied in a variety of forms and should not be construed as being limited to the embodiments set forth herein. To those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and a repetitive description thereof will be omitted.

In order to improve the deficiencies of the prior art, the present invention provides a compressor, preferably an electric scroll compressor for a vehicle. Hereinafter, various embodiments will be described by taking a vertical structure, that is, a shaft type transmission mechanism and a scroll pump body axis using a vertically arranged compressor as an example, but the present invention is also applicable to a horizontal type compressor. The compressor provided by the present invention is preferably powered by a motor vehicle, but is not limited thereto.

A specific embodiment of the present invention will first be described with reference to Figs. FIG. 1 shows a perspective view of a compressor in accordance with an embodiment of the present invention. 2 shows a cross-sectional view of a compressor in accordance with an embodiment of the present invention. Figure 3 is a partial view F of Figure 2. Figure 4 is a partial view G of Figure 2. Figure 5 shows a front view of a compressor in accordance with an embodiment of the present invention. Fig. 6 is a cross-sectional view taken along line A-A of Fig. 5; Fig. 7 is a cross-sectional view taken along line B-B of Fig. 5; Figure 8 shows an exploded view of a compressor housing in accordance with an embodiment of the present invention. Figure 9 shows a front view of a compressor housing in accordance with an embodiment of the present invention. Figure 10 is a cross-sectional view taken along line C-C of Figure 9; Figure 11 shows a perspective view of an upper bracket-motor mechanism-lower bracket assembly in accordance with an embodiment of the present invention. Figure 12 shows a bottom view of the upper bracket-motor mechanism-lower bracket assembly in accordance with an embodiment of the present invention. Figure 13 is a cross-sectional view taken along line D-D of Figure 12; Figure 14 shows a bottom view of the interior of a compressor housing in accordance with an embodiment of the present invention. Fig. 15 is a sectional view taken along line E-E of Fig. 14; Figure 16 is a perspective view showing a perspective view of an upper bracket according to an embodiment of the present invention.

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

The housing 3 has a first opening. Optionally, the housing 3 is a cast piece. The housing 3 includes a retaining wall 308 that divides the housing space into a low pressure chamber 309 and a controller chamber 302. The low pressure chamber 309 houses the motor mechanism. The controller cavity 302 is provided with a second opening. The vertical compressor also includes a controller chamber cover 4 and an electronic control unit. The controller chamber cover 4 seals the second opening. Specifically, the maker chamber cover 4 and the housing 3 are sealed and fastened by a seal ring 9 (or a gasket, or a sealant) and a bolt 10. The electronic control unit is disposed within the controller cavity 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 cavity 302. The electronic control component optionally includes a first electronic control component and a second electrical control component. The first electronic control component is received within the cavity 305. The first electronic control component includes, but is not limited to, one or more of the following components: capacitors, inductors, and relays. The second electronic control component is in contact with a portion of the retaining wall 308 that is disposed outside the cavity 305. The second electronic control component includes a power component. Specifically, the position where the cavity 305 is disposed does not interfere with the components in the low pressure cavity 309 on the side of the low pressure cavity 309, and the portion of the power component and the retaining wall 308 of the housing 3 is not provided with the cavity 305 on the controller cavity 302 side. In combination, the refrigerant flowing in from the suction chamber 203 in the low pressure chamber 309 flows through the retaining wall 308, and the refrigerant absorbs heat radiated from the power unit to cool the power unit. Thus, the excess space in the low pressure chamber 309 is divided by the retaining wall 308 of the casing 3 for accommodating the electronic control unit to reduce the width L2 of the portion of the controller chamber 302, thereby miniaturizing the vertical scroll compressor. The remaining second electronic control components not disposed in the cavity 305 may not be attached to the retaining wall 308.

The fixed scroll 2 includes a low pressure side 202 provided with a wrap 201 and a high pressure side 206 facing away from the wrap 201. The low pressure side 202 of the fixed scroll 2 is opposed to the first opening of the housing 3 to form an accommodation space. Preferably, the housing 3 and the accommodating space formed by the low pressure side 202 of the fixed scroll 2 are optionally cuboids. However, the present invention is not limited thereto, and the accommodation space may be, for example, a cylinder-like shape, a cube-like shape, or the like. Alternatively, the housing 3 and the fixed scroll 2 are sealed and fastened by a sealing ring 7 (or a gasket, or a sealant) and a bolt 8. Preferably, the fixed scroll is a wear-resistant high-strength aluminum alloy member, such as a forged aluminum alloy, an extruded aluminum alloy, or the like (wherein the strength and compactness of the high-strength aluminum alloy member are superior to those of the ordinary cast member). Optionally, one or more mounting

legs

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

A high pressure chamber 2014 is formed between the upper cover 1 and the high pressure side 206 of the fixed scroll 2. An exhaust valve plate 30 and an exhaust baffle are mounted in the high pressure chamber 2014. Alternatively, the sealing and fastening of the upper cover 1 and the fixed scroll 2 are achieved by a sealing ring 5 (or a gasket, or a sealant) and a bolt 6. The low pressure side 202 of the fixed scroll 2 is also formed with an intake chamber 203. 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 fixed scroll 2 is also provided with an intake screw hole 2011 and an exhaust threaded hole. The suction chamber 203 is in communication with the suction port 2010. In other words, the high-strength aluminum alloy static scroll 2 is a part of the compressor casing, and the compressor intake port 2010 and the exhaust port 2012 are both provided on the fixed scroll 2. Since the strength and compactness of the material of the high-strength aluminum alloy, such as forging or extrusion casting, are superior to those of the casting, the airtightness and the thread strength of the suction port 2010 and the exhaust port 2012 are better. At the same time, the machined portion and the machined area of the cast casing 3 are less, and the airtightness of the casing 3 is better, thereby improving the airtightness of the whole machine.

The movable scroll 15 is located in the accommodating space. The side of the movable scroll 15 on which the wrap 1501 is disposed is opposed 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 movable 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 the low pressure chamber 309. The motor mechanism is used to drive the orbiting scroll 15 to rotate relative to the fixed scroll 2 to compress the refrigerant in the compression chamber.

Specifically, the refrigerant refrigerant passage is: the refrigerant enters the suction chamber 203 through the suction port 2010, the suction chamber 203 and the low pressure chamber 309 communicate, and the refrigerant flows into the low pressure side 202 of the fixed scroll after passing through the low pressure chamber 309, after which The compressed chamber that flows into the fixed scroll wrap 201 and the orbiting scroll wrap 1501 is compressed, and the compressed refrigerant flows into the high pressure chamber 2014 through the exhaust hole 209, and then the refrigerant is discharged into communication with the high pressure chamber 2014. Exhaust port in 2012. Further, the refrigerant flows from the suction port 2010 of the fixed scroll 2 into the vertical compressor, and flows toward the bottom wall of the casing 3 away from the fixed scroll, and the refrigerant passes through the retaining wall 308 of the casing 3 to face the controller chamber. The electronic control unit in 302 is cooled, and the refrigerant 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 a vertical structure. Since the space of the housing is rectangular, the length of the whole machine is shorter than that of the horizontal compressor, and the original level is maintained at the height, and is installed on the automobile. It occupies less lateral installation space, and the bottom of the low pressure chamber 309 of the compressor can form a smoother lubricating oil pool 31, which has better lubrication effect, improves the reliability of the compressor, and reduces the oil discharge of the compressor. In addition, if solid impurities enter the compressor through the suction port 2010 and the suction chamber 203, impurities are preferentially deposited in the lower portion of the low pressure chamber 309, so that impurities enter the pump body compression chamber composed of the fixed scroll 2 and the movable scroll 15. The probability of this is small, which greatly reduces the risk of damage to the pump body due to the ingress of impurities.

Optionally, in the embodiment, 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.

The upper bracket 11 is fixedly coupled to the low pressure side 202 of the fixed scroll 2. Specifically, the bolt 29 is provided through the upper bracket 11 and provided with a bolt through hole and a threaded hole 2015 provided in the fixed scroll 2 to connect and fix the upper bracket 11 to the low pressure side 202 of the fixed scroll 2.

The lower bracket 13 is fixedly coupled to the upper bracket 11 via the motor stator 12. Specifically, in the present embodiment, the upper bracket 11 includes a first side that is fixedly coupled to the fixed scroll 2 and a second side that is opposite to the first side. A plurality of upper bracket bosses 1105 are disposed on the second side of the upper bracket 11. Each of the upper bracket bosses 1105 is provided with a threaded hole 1106. Optionally, the upper bracket 11 includes four such bolt through holes 1106, and the center lines of the four bolt through holes 1106 form a square shape, and 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 1106. The lower bracket 13 is provided with a plurality of second bolt through holes corresponding to the threaded holes 1106. The bolt 35 passes through the second bolt through hole, the first bolt through hole, and the screw hole 1106 to connect and fix the upper bracket 11, the motor stator 12, and the lower bracket 13. Preferably, the upper bracket 11, the motor stator 12, and the lower bracket 13 are suspended from the low pressure side of the fixed scroll 2 and have no contact with the casing 3.

The upper bracket 11, the motor stator 12, and the lower bracket 13 are mounted together on the fixed scroll 2, and the upper bracket 11, the motor stator 12, and the lower bracket 13 are not in contact with the casing 3, thereby avoiding the motor and the transmission when the compressor is running. The vibration and noise generated by the mechanism are transmitted directly through the casing 3, thereby improving the vibration and noise performance of the whole machine. Since the interference fit of the motor stator 12 and the housing 3 is eliminated, the component accuracy requirements for the housing 3 and the motor stator 12 can be relaxed, so that the production cost can be reduced. In addition, the mounting structure enables visual inspection of all internal parts during compressor assembly, reducing the chance of misoperation during assembly operations. Therefore, the mounting structure can optimize the processing and assembly of parts of the compressor, which is beneficial to reduce production costs.

Alternatively, a bearing hole is provided on a side of the movable scroll 15 facing away from the fixed scroll 2. A moving plate bearing 16 is disposed in the bearing hole. A wear pad 14 is also disposed between the upper bracket 11 and the movable scroll 15. The compressor may further include an upper bearing 17 and a lower bearing 18, and the upper bearing 17 and the lower bearing 18 are respectively sleeved at both ends of the eccentric crankshaft 19. The eccentric crankshaft 19 provides a rotational force to the orbiting scroll 15.

Further, in conjunction with the above figures and with continued reference to Figures 17 and 18. Figure 17 is a cross-sectional view showing the upper bracket-motor mechanism-lower bracket assembly in accordance with another embodiment of the present invention. Figure 18 is a partial view T of Figure 17. The compressor may also 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 assembled with the first bolt through hole. One end of the guide post 36 abuts against the upper bracket 11, and the other end of the guide post 36 abuts against the lower bracket 11. Therefore, it is possible to solve the problem of poor coaxiality of the upper and lower bracket bearing holes caused by poor parallelism of the end faces of the motor stator 12 or poor flatness of the end surface of the motor stator 12, thereby improving the assembly accuracy of the upper and lower bearings. In turn, the efficiency of the compressor is increased. Preferably, the axial length of the guide post 36 is greater than the axial length of the first bolt through hole. Specifically, the two ends of the guide post 36 are flat against the upper and lower brackets, and a certain distance is left between the motor stator 12 and the upper and lower brackets.

Next, a compressor according to still another embodiment of the present invention will be described with reference to Figs. 19 to 22 . Figure 19 is a perspective view of the internal components of the compressor housing in accordance with yet another embodiment of the present invention. Figure 20 shows a cross-sectional view of a compressor in accordance with yet another embodiment of the present invention. Figure 21 is a partial view O of Figure 19. Figure 22 shows a perspective view of a terminal in accordance with yet another embodiment of the present invention.

Similar to the aforementioned compressor, in the present embodiment, the vertical 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. The low pressure side 202 of the fixed scroll 2 is opposed to the first opening of the housing 3 to form an accommodation space. The motor mechanism includes a motor rotor and a motor stator 12 located in the accommodating space. The motor stator 12 is fixedly connected to the fixed scroll 2 via the upper bracket 11.

In the present embodiment, the motor stator 12 is coupled to the terminal 21 via the motor lead-out line 1201 and to the electronic control unit within the controller cavity 302 via the stationary-wire connection via 2106 and the housing wiring via 3010. The terminal 21 is located between the inner wall of the casing 3 and the outer wall of the motor stator 12, and away from the oil pool 31 (that is, at the top of the accommodating space formed by the casing 3 and the fixed scroll 2). Specifically, the terminal 21 includes a cylinder 2101 and an end plate 2102. The end plate 2102 is provided with a through hole through which the column 2101 passes. The motor lead wire 1201 includes a terminal 1202 electrically connected to the post 2101 and an insulating shroud 1203 wrapped around the outside of the terminal 1202. An outer portion of the cylinder 2101 between the insulating shroud 1203 and the end plate 2102 surrounds the insulative jacket 2104. The inner diameter of the insulating sheath 2104 is smaller than the diameter of the cylinder 2101. Optionally, a terminal 21 is disposed on the fixed scroll 2. Specifically, the fixed scroll 2 is provided with a through hole through which the column 2101 of the terminal 21 passes, and a through hole provided for the passage of the cylinder 2101 of the stud 21 around the fixed scroll 2 toward the opening of the motor mechanism Groove. 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 surface of the recess provided on the back surface of the fixed scroll 2 to protect the terminal 21 and the wires connected to the controller.

In this embodiment, since the motor stator 12 is fixedly connected to the fixed scroll 2, and the terminal 21 is also fixedly connected to the fixed scroll 2, the positional relationship between the motor stator 12 and the terminal 21 is fixed, and the static position is static. The scroll 2 and the housing 3 have not been assembled, and there is sufficient operation space for assembling the motor lead 1201 and the terminal 21. The length of the lead wire 1201 is used to ensure that the length of the lead wire 1201 is just enough to mount the terminal 1202 on the cylinder 2101 of the terminal 21, and the length of the lead wire 1201 is hardly redundant. When the terminal 1202 is mounted on the terminal 21, the insulating sheath 2104 is first sleeved on the outside of the cylinder 2101. 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 and the cylinder 2101 The outer surface can fit snugly. The terminal 1201 is then mounted on the cylinder 2101 and the insulating shroud 1203 is pressed to elastically deform the insulating sheath 2104, ensuring a tight relationship between the insulating shroud 1203 and the insulating sheath 2104 and between the insulating sheath 2104 and the end plate 2102. fit. The assembly of the motor lead wire 1201 and the terminal 21 is thus completed. Thereafter, the fixed scroll 2 and the casing 3 are fastened by bolts to form a closed cavity.

The fixed scroll 2 is a part of the outer casing of the compressor, and the terminal 21 is mounted inside the fixed scroll 2. The motor stator 12 is indirectly mounted on the fixed scroll 2 via the upper bracket 11. The advantage of this mounting method is that the positional relationship between the motor lead wire 1201 and the terminal 21 is determined before the fixed scroll 2 and the housing 3 are mounted to form a closed cavity, and is mounted on the fixed scroll 2 and the housing 3. The positional relationship between the motor lead wire 1201 and the terminal 21 after the formation of the closed cavity is no longer changed. Before the fixed scroll 2 and the casing 3 are installed to form a closed cavity, the length of the motor lead 1201 can be accurately calculated according to the position of the motor lead 1201 and the mounting point of the terminal 21, and the motor lead 1201 and the terminal 21 are ensured. After the assembly is completed, the length of the lead wire 1201 is not redundant, and the position of the lead wire 1201 can be better fixed, and the shaking of the motor lead wire 1201 caused by the vibration of the compressor is substantially eliminated. The possibility that the motor lead wire 1201 is in contact with the peripheral component or the compressor casing is almost zero, which greatly improves the insulation and reliability of the compressor. Moreover, only the necessary electrical safety clearance needs to be reserved when designing the compressor housing 3 and the motor lead-out line 1201, which is advantageous for miniaturization of the compressor.

Since the mounting position of the terminal 21 and the motor lead wire 1201 is away from the oil pool, it is located at the top of the inner side of the compressor, and if there is a liquid refrigerant containing lubricating oil or trace moisture and impurities in the compressor, the liquid refrigerant first flows from the compressor. The bottom of the inner side begins to accumulate, and only when the liquid refrigerant almost fills the inner cavity of the compressor, it is immersed in the connection portion of the terminal 21 and the motor lead-out line 1201. Therefore, when the terminal 21 and the motor lead wire 1201 are mounted on the inner side of the compressor, the connection portion of the terminal 21 and the motor lead wire 1201 is less likely to be immersed in the liquid refrigerant, and the insulation of the compressor is installed. better.

At the same time, since the assembly process between the motor lead wire 1201 and the terminal 21 is completed in an open environment of the compressor casing, there is sufficient operation space, and the entire assembly operation is visualized, which can greatly improve the assembly and inspection operations. Sex, which can reduce the chance of misoperation in the operation and improve production efficiency.

Further, since the terminal 21 is mounted on the low pressure side of the fixed scroll 2, and the inside pressure of the compressor is greater than the external pressure, the pressure difference between the inner and outer sides of the compressor acts on the terminal end plate 2102 and forces the end plate 2102 against the static vortex. The inner wall of the groove of the disk 2. The seal 2103 of the terminal 21 does not require too much pressure on the terminal end plate 2102 to achieve a better seal between the terminal 21 and the low pressure side end face of the fixed scroll 2. Therefore, compared with the mounting manner in which the terminal 21 is mounted from the outside of the compressor, when the terminal 21 is mounted on the low-voltage side end surface of the fixed scroll 2, the force applied to the terminal 21 and the sealing member 2103 is better, and the terminal 21 is attached. Moreover, the strength requirement of the sealing member 2103 is not very high, which is advantageous for weight reduction and cost reduction of related parts.

In addition, an insulation protection device is added at a connection portion between the motor lead wire 1201 and the terminal 21, one of which is to increase the insulation shield 1203 outside the lead wire terminal 1202, and the other is to connect the wire between the insulation shield 1203 and the end plate 2102. An insulating sheath 2104 is added to the outside of the column cylinder 2101. The two insulation guards can further reduce the possibility that the conductive portion of the motor lead wire 1201 and the terminal 21 is exposed to an environment containing a refrigerant, a lubricating oil, and possibly a trace amount of moisture and impurities, thereby improving the insulation performance of the compressor.

The exemplary embodiments of the present invention have been particularly shown and described above. It is to be understood that the invention is not limited to the disclosed embodiments, and the invention is intended to cover various modifications and equivalents.

Claims

A compressor, comprising:

a housing (3) having a first opening to form an accommodation space;

Compression mechanism, including:

a fixed scroll (2) comprising a low pressure side (202) provided with a wrap (201) and a high pressure side (206) facing away from the wrap (201);

a movable scroll (15), the movable scroll (15) is located in the accommodating space, and the movable scroll (15) is provided with one side of the wrap (1501) and the fixed scroll (2) The wraps (201) are opposed to each other, and the wraps (201) of the fixed scroll (2) and the wraps (1501) of the orbiting scroll (15) form a compression chamber;

The motor mechanism is housed in the accommodating space, and includes a motor rotor (20) and a motor stator (12), and drives the movable scroll (15) to rotate relative to the fixed scroll (2) to compress a refrigerant in the compression chamber;

An upper bracket (11) coupled to the low pressure side (202) of the fixed scroll (2);

The lower bracket (13) is fixedly connected to the upper bracket by the motor stator (12).
The compressor according to claim 1, wherein

The upper bracket (11) includes a first side fixedly coupled to the fixed scroll (2) and a second side opposite the first side, and the second side of the upper bracket (11) is disposed There are a plurality of upper bracket bosses (1105), and each of the upper bracket bosses (1105) is provided with a threaded hole (1106);

The motor stator (12) is provided with a plurality of first bolt through holes corresponding to the threaded holes (1106);

The lower bracket (13) is provided with a plurality of second bolt through holes corresponding to the threaded holes (1106);

a bolt (35) passing through the second bolt through hole, the first bolt through hole, and the threaded hole (1106) to place the upper bracket (11), the motor stator (12), and the lower portion The bracket (13) is fixedly connected.
The compressor of claim 2, further comprising:

a guide post (36), the guide post (36) is a through cylinder, the bolt (35) passes through the guide post (36), and the guide post (36) is located at the bolt (35) and Between the inner walls of the first bolt through holes of the motor stator (12),

Wherein, one end of the guiding post (36) abuts the upper bracket (11), and the other end of the guiding post (36) abuts the lower bracket (11).
The compressor according to claim 3, wherein an axial length of said guide post (36) is greater than an axial length of said first bolt through hole.
A compressor according to claim 1, wherein a bolt (29) passes through said upper bracket (11) and a threaded hole (2015) provided in said fixed scroll (2) to cause said upper bracket (11) is fixedly connected to the low pressure side (202) of the fixed scroll (2).
The compressor according to claim 1, characterized in that the low pressure side (202) of the fixed scroll (2) is opposed to the first opening of the casing (3) to form the accommodation space.
The compressor according to claim 6, wherein said stationary scroll (2) is an aluminum alloy forged part or an aluminum alloy extruded casting, and said compressor further comprises:

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

The low pressure side (202) of the fixed scroll (2) is further formed with an air suction chamber (203), wherein

The fixed scroll (2) is further provided with an exhaust port (2012) communicating with the high pressure chamber (2014) and an intake port (2010) communicating with the suction chamber (203).
The compressor according to claim 6, characterized in that the housing (3) and the low-pressure side (202) of the fixed scroll (2) form an accommodation space of a rectangular parallelepiped.
The compressor according to claim 1, wherein said housing (3) includes a retaining wall (308) that divides said housing space into a low pressure chamber (309) and A controller cavity (302), the motor mechanism being housed within the low pressure chamber (309).
The compressor according to claim 9, wherein said controller 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;

An electronic control component is disposed within the controller cavity (302) between the controller chamber cover (4) and the retaining wall (308).
The compressor according to claim 10, wherein said retaining wall is provided with a cavity (305) opening toward said controller chamber (302),

The electronic control component includes:

a first electronic control component is received in the cavity (305);

The second electronic control unit is disposed in a portion of the space other than the cavity (305) with the retaining wall (308).
The compressor according to claim 11, wherein said first electronic control unit comprises one or more of the following components: a capacitor, an inductor, and a relay; and said second electronic control unit includes a power component. The power element is attached to the retaining wall (308).
The compressor according to claim 1, wherein said motor stator (12) is connected to a terminal (21) via a motor lead wire (1201), and said terminal (21) is located in said housing (3) Between the inner wall and the outer wall of the motor stator (12), and away from the bottom wall of the housing (3).
A compressor according to claim 13, characterized in that said terminal (21) is arranged on said fixed scroll (2).
The compressor according to claim 14, wherein said terminal (21) comprises a cylinder (2101) and an end plate (2102),

The fixed scroll (2) is provided with a through hole through which the column (2101) of the terminal (21) passes, and a column surrounding the fixed scroll (2) for the terminal (21) ( 2101) a through hole provided through the through hole facing the opening of 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 recess.