阅读说明：本技术 具有强化冷却功能的涡旋压缩机 (Scroll compressor with enhanced cooling function ) 是由 黄志刚 牟英涛 曲冬琦 邢冠东 于 2021-01-13 设计创作，主要内容包括：本发明公开一种具有强化冷却功能的涡旋压缩机,包括：壳体和电机,所述电机设于所述壳体内,且所述电机与所述壳体的一端之间具有第一腔室；还包括：导流板,所述导流板设于所述第一腔室内,所述导流板与所述壳体的一端固定连接,所述导流板内具有至少一导流通道,所述导流通道与所述壳体的一端接触。本发明设置导流板对壳体的一端进行强化冷却,提高控制部件的可靠性。(The invention discloses a scroll compressor with enhanced cooling function, comprising: the motor is arranged in the shell, and a first cavity is formed between the motor and one end of the shell; further comprising: the guide plate is arranged in the first cavity and fixedly connected with one end of the shell, and at least one guide channel is arranged in the guide plate and is in contact with one end of the shell. The invention sets the guide plate to cool one end of the shell intensively, thereby improving the reliability of the control part.)

1. A scroll compressor having an enhanced cooling function, comprising: the motor is arranged in the shell, and a first cavity is formed between the motor and one end of the shell;

further comprising: the guide plate is arranged in the first cavity and fixedly connected with one end of the shell, and at least one guide channel is arranged in the guide plate and is in contact with one end of the shell.

2. The scroll compressor with enhanced cooling function as claimed in claim 1, wherein one end of the housing has an air inlet, two ends of the flow guide plate have a flow guide inlet and a flow guide outlet respectively, the flow guide inlet and the flow guide outlet are respectively communicated with two ends of the flow guide channel, the air inlet is opposite to the flow guide inlet, and the flow guide outlet is communicated with the first chamber.

3. The scroll compressor with the enhanced cooling function according to claim 2, wherein a middle portion of one end of the housing is provided with a sub-bearing, the guide plate is located on a peripheral side of the sub-bearing, and an inner side of the guide plate is provided with at least one through hole communicating with the guide passage, the through hole facing the sub-bearing.

4. The scroll compressor with enhanced cooling according to claim 3, wherein a sectional area of the guide outlet is smaller than a sectional area of any one of the guide passages.

5. The scroll compressor with enhanced cooling function of claim 4, wherein two of said flow guiding channels are disposed in said flow guiding plate, one of said flow guiding channels is disposed inside said flow guiding plate, the other of said flow guiding channels is disposed outside said flow guiding plate, inlets of said two flow guiding channels are respectively connected to said flow guiding inlets, said flow guiding inlets are disposed outside one end of said flow guiding plate, outlets of said two flow guiding channels extend to said flow guiding outlets, and said through hole is connected to said one of said flow guiding channels.

6. The scroll compressor with enhanced cooling of claim 5, wherein a partition plate is disposed in the guide plate, and the two guide passages are respectively disposed on two sides of the partition plate.

7. The scroll compressor with enhanced cooling according to claim 4, wherein the baffle is disposed in a semi-annular shape, and both of the flow guide passages are disposed in a semi-annular shape.

8. The scroll compressor with enhanced cooling according to claim 6, wherein both ends of the baffle plate are provided with at least one mounting hole, one end of the baffle plate is provided with at least one lug, the mounting hole at one end of the baffle plate extends through the lug, and the mounting hole at the other end of the baffle plate extends through the other end of the baffle plate and the partition plate.

9. The scroll compressor with the enhanced cooling function according to claim 5, wherein a controller is installed outside one end of the housing, and the guide outlet is directed toward the controller.

10. The scroll compressor with enhanced cooling according to claim 5, wherein a side of one end of the baffle plate adjacent to the motor has a convex wall, and an outer side of one end of the baffle plate and the convex wall form the guide inlet.

Technical Field

The invention relates to the technical field of compressors, in particular to a scroll compressor with an enhanced cooling function.

Background

The scroll compressor, especially the scroll compressor for vehicle, adopts the integrated design of machine, electricity, liquid and control. The design has compact structure and small occupied space, and is particularly suitable for vehicles. At present, the mainstream electric control arrangement scheme in the market enables the control panel to be perpendicular to the axial direction of the compressor and is arranged on the rear shell, and the scheme can effectively utilize low pressure and low temperature to suck gas and cool the rear cover plate, thereby achieving the purpose of cooling the frequency converter.

Although the technical scheme greatly improves the cooling of the frequency converter and reduces the control heating and the failure rate caused by the control heating, the heat dissipation of the controller still faces a great challenge due to the continuous expansion of the application range of the compressor and the consequent high power and high current. Meanwhile, the suction pulsation, which is one of the important influencing factors of the NVH of the compressor, is also a key technical problem that those skilled in the art are going to solve at present, but the number of the methods is not large.

The compressor in the prior art is composed of a front shell, a static vortex, a dynamic vortex, a crankshaft, a motor, a middle shell, a main bearing, an eccentric bearing, an auxiliary bearing, a rear shell, a controller, an exhaust pipe positioned on the front shell, an air suction pipe positioned between the motor and the rear shell, and other parts. The back shell is integrally designed, namely, the back shell is used as a part of a pressure container and is connected with the middle shell to realize the sealing of low-temperature and low-pressure sucked gas, the back shell is also used as a part of a box body for installing the controller, the back shell is connected with a back cover plate to realize the sealing of the controller, and a gas suction port of a gas compression working cavity consisting of a movable scroll plate and a fixed scroll plate is positioned on one side of a gas suction pipe.

When the compressor works, low-temperature and low-pressure suction gas enters the compressor through the air suction pipe, flows through a cavity between the motor and the rear shell, takes away heat conducted to the rear shell by the controller, flows through a gap between the motor stator and the motor rotor and a gap between the motor stator and the middle shell, and flows to a working cavity inlet formed by the static vortex disk and the movable vortex disk along the axial direction.

Although the working environment of the frequency converter is improved to a great extent in the prior art, the frequency converter is cooled by the sucked low-temperature and low-pressure gas. However, since the pressure at the inlet of the gas compression working chamber is lower than that at the inlet of the suction pipe when the compressor is in operation, most of the suction gas starts to flow to the inlet of the working chamber under the action of the pressure difference when the suction gas does not reach or does not reach the space on the opposite side of the suction pipe sufficiently, so that the cooling effect of the compressor rear shell, particularly the rear shell on the area on the opposite side of the suction pipe, is not ideal.

The power device IPM or IGBT is used as a core component of the frequency converter, and is also a main heat generating component, and the volume of the power device IPM or IGBT is still large relative to the controller. In a limited installation space, a part or a large part of the power device may be located in a rear case portion corresponding to a space on the opposite side of the suction duct. The cooling effect of the prior art solutions is therefore not very ideal.

In particular, as the range of applications of compressors is widened, the range of evaporating temperature and the range of condensing temperature of the compressors are enlarged. When the frequency converter works under the working conditions of high evaporation and high condensation and high power, the current flowing through the frequency converter is very large, and the heat productivity of the frequency converter is increased accordingly. When the air conditioner works under the heating working conditions of low evaporation and high condensation, the current is large, and the cooling effect is poorer because the mass flow of the air is reduced. The prior art scheme is more difficult to meet the actual application requirement, and the danger of increasing the failure rate of the frequency converter exists.

Disclosure of Invention

The problem that the existing scroll compressor is unsatisfactory in cooling effect and the frequency converter fault rate is increased is solved by the improved scroll compressor with the enhanced cooling function.

The specific technical scheme is as follows:

a scroll compressor with enhanced cooling, comprising: the motor is arranged in the shell, and a first cavity is formed between the motor and one end of the shell;

further comprising: the guide plate is arranged in the first cavity and fixedly connected with one end of the shell, and at least one guide channel is arranged in the guide plate and is in contact with one end of the shell.

The scroll compressor with the enhanced cooling function is characterized in that one end of the shell is provided with an air suction port, two ends of the guide plate are respectively provided with a guide inlet and a guide outlet, the guide inlet and the guide outlet are respectively communicated with two ends of the guide channel, the air suction port is opposite to the guide inlet, and the guide outlet is communicated with the first cavity.

Foretell scroll compressor with reinforce cooling function, wherein, the middle part of the one end of casing is equipped with the auxiliary bearing, the guide plate is located the week side of auxiliary bearing, the inboard of guide plate be equipped with an at least through-hole that the water conservancy diversion passageway is linked together, the through-hole orientation the auxiliary bearing.

In the scroll compressor with an enhanced cooling function, a cross-sectional area of the flow guide outlet is smaller than a cross-sectional area of any one of the flow guide channels.

In the above scroll compressor with enhanced cooling function, two flow guide channels are provided in the flow guide plate, one flow guide channel is located inside the flow guide plate, the other flow guide channel is located outside the flow guide plate, inlets of the two flow guide channels are respectively communicated with the flow guide inlet, the flow guide inlet is located outside one end of the flow guide plate, outlets of the two flow guide channels extend to the flow guide outlet, and the through hole is communicated with the one flow guide channel.

In the above scroll compressor with enhanced cooling function, the guide plate is provided with the partition plate therein, and the two guide channels are respectively located at two sides of the partition plate.

The above scroll compressor with enhanced cooling function, wherein the guide plate is disposed in a semi-annular shape, and the two guide channels are disposed in a semi-annular shape.

In the above scroll compressor with enhanced cooling function, both ends of the guide plate are provided with at least one mounting hole, one end of the guide plate is provided with at least one lug, the mounting hole at one end of the guide plate penetrates through the lug, and the mounting hole at the other end of the guide plate penetrates through the other end of the guide plate and the partition plate.

The scroll compressor with the enhanced cooling function is characterized in that a controller is mounted on the outer side of one end of the shell, and the diversion outlet faces the controller.

In the scroll compressor with an enhanced cooling function, a side of one end of the flow guide plate, which is close to the motor, is provided with a convex wall, and the flow guide inlet is formed on the outer side of one end of the flow guide plate and the convex wall.

Compared with the prior art, the technical scheme has the positive effects that:

(1) the guide plate is additionally arranged to comb the flow of the sucked low-temperature and low-pressure gas, so that the low-temperature and low-pressure gas is smoother, and the turbulence noise is reduced; meanwhile, by controlling the outlet position of the flow channel and changing the outlet sectional area of the flow channel, low-temperature and low-pressure suction gas can be sprayed to the installation position of the controller, so that the cooling rear shell is strengthened, the cooling of the control panel is strengthened, and the reliability problem of the electric control panel in product application is reduced;

(2) one or more through holes are formed in the joint position of the guide plate and the bearing seat, so that part of low-temperature and low-pressure sucked gas can be guided to the position of the auxiliary bearing by utilizing the increase of the gas pressure caused by the change of the section of the guide channel in the guide plate, the aim of enhancing the oil-gas lubrication of the auxiliary bearing is fulfilled, and the mechanical reliability of the compressor is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of a scroll compressor with enhanced cooling according to the present invention;

FIG. 2 is a schematic view of a scroll compressor having enhanced cooling capability with a baffle mounted to the rear shell in accordance with the present invention;

FIG. 3 is a schematic view of a scroll compressor having enhanced cooling capability with a baffle mounted to the rear shell in accordance with the present invention;

FIG. 4 is a schematic view of a baffle of a scroll compressor having enhanced cooling according to the present invention;

FIG. 5 is a schematic view of a baffle of a scroll compressor having enhanced cooling according to the present invention;

in the drawings: 1. a housing; 2. a motor; 3. a first chamber; 4. a baffle; 5. a flow guide channel; 6. an air suction port; 7. a flow guide inlet; 8. a diversion outlet; 9. a secondary bearing; 10. a through hole; 11. a partition plate; 12. mounting holes; 13. a lug; 14. a convex wall; 15. a front housing; 16. a middle shell; 17. a rear housing; 18. a rear cover plate; 19. carrying out static vortex; 20. carrying out movable vortex; 21. a crankshaft; 22. a main bearing; 23. an eccentric bearing; 24. a wiring terminal; 25. a weak current public terminal; 26. a strong current male end mounting hole; 27. an exhaust pipe; 28. and installing pins.

Detailed Description

The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.

Fig. 1 is an overall structural view of a scroll compressor with enhanced cooling function according to the present invention, fig. 2 is a structural view of a baffle plate of a scroll compressor with enhanced cooling function according to the present invention mounted on a rear shell, fig. 3 is a structural view of a baffle plate of a scroll compressor with enhanced cooling function according to the present invention mounted on a rear shell, fig. 4 is a structural view of a baffle plate of a scroll compressor with enhanced cooling function according to the present invention, fig. 5 is a structural view of a baffle plate of a scroll compressor with enhanced cooling function according to the present invention, as shown in fig. 1 to 5, showing a scroll compressor with enhanced cooling function according to a preferred embodiment, including: casing 1 and motor 2, motor 2 locate in the casing 1, and have first chamber 3 between the one end of motor 2 and casing 1.

Further, as a preferred embodiment, the scroll compressor with enhanced cooling function further includes: guide plate 4, in first cavity 3 was located to guide plate 4, guide plate 4 and the one end fixed connection of casing 1, had an at least water conservancy diversion passageway 5 in the guide plate 4, water conservancy diversion passageway 5 and the one end contact of casing 1.

Further, as a preferred embodiment, one end of the housing 1 has an air suction port 6, two ends of the flow guide plate 4 have a flow guide inlet 7 and a flow guide outlet 8, the flow guide inlet 7 and the flow guide outlet 8 are respectively communicated with two ends of the flow guide channel 5, the air suction port 6 is opposite to the flow guide inlet 7, and the flow guide outlet 8 is communicated with the first chamber 3.

Further, as a preferred embodiment, a controller is installed outside one end of the housing 1, and the diversion outlet 8 faces the controller. Preferably, the diversion outlet 8 is located towards the end of the housing 1 where the controller is mounted for enhanced cooling.

The above are merely preferred embodiments of the present invention, and the embodiments and the protection scope of the present invention are not limited thereby.

The present invention also has the following embodiments in addition to the above:

in a further embodiment of the present invention, please refer to fig. 1 to 5, a secondary bearing 9 is disposed in the middle of one end of the housing 1, the flow guide plate 4 is disposed around the secondary bearing 9, at least one through hole 10 communicated with the flow guide channel 5 is disposed inside the flow guide plate 4, and the through hole 10 faces the secondary bearing 9.

In a further embodiment of the invention the cross-sectional area of the flow guiding outlet 8 is smaller than the cross-sectional area of any one of the flow guiding channels 5.

In a further embodiment of the present invention, the flow guiding plate 4 has two flow guiding channels 5 therein, one flow guiding channel 5 is located at the inner side of the flow guiding plate 4, the other flow guiding channel 5 is located at the outer side of the flow guiding plate 4, inlets of the two flow guiding channels 5 are respectively communicated with a flow guiding inlet 7, the flow guiding inlet 7 is located at the outer side of one end of the flow guiding plate 4, outlets of the two flow guiding channels 5 extend to a flow guiding outlet 8, and the through hole 10 is communicated with the one flow guiding channel 5.

Preferably, the outlet of each flow guide channel 5 has a flow guide outlet 8.

In a further embodiment of the present invention, a partition plate 11 is disposed in the flow guide plate 4, and the two flow guide channels 5 are respectively located at two sides of the partition plate 11.

In a further embodiment of the invention, the deflector 4 is arranged in a semi-annular shape, and both deflector channels 5 are arranged in a semi-annular shape.

In a further embodiment of the present invention, both ends of the flow guiding plate 4 are provided with at least one mounting hole 12, one end of the flow guiding plate 4 is provided with at least one lug 13, the mounting hole 12 located at one end of the flow guiding plate 4 penetrates through the lug 13, and the mounting hole 12 located at the other end of the flow guiding plate 4 penetrates through the other end of the flow guiding plate 4 and the partition plate 11.

Preferably, one end of the guide plate 4 is provided with two lugs 13, and the two lugs 13 are both provided with mounting holes 12.

In a further embodiment of the invention, the side of the end of the air deflector 4 adjacent to the motor 2 is provided with a convex wall 14, and the outer side of the end of the air deflector 4 and the convex wall 14 form the air deflector inlet 7.

Preferably, a convex wall 14 is provided in order to enlarge the flow guide inlet 7.

Preferably, the width of the end of the partition plate 11 at the guide outlet 8 is greater than the width of the partition plate 11 at the guide passage 5; and, preferably, the thickness of the guide plate 4 at the guide outlet 8 is larger than the thickness of the guide plate 4 at the peripheral side of the guide passage 5, and this structure is used to change the sectional area of the guide outlet 8, i.e., to reduce the sectional area of the outlet of the guide passage 5.

According to the invention, the guide plate 4 is additionally arranged, the guide channel 5 is formed in the guide plate 4, and the guide channel 5 is arranged in a semi-annular shape, so that the flow of the sucked low-temperature and low-pressure gas is combed, the gas is smoother, and the turbulence noise is reduced; meanwhile, by controlling the outlet position of the flow channel, namely installing a control part at the outer side of one end of the shell 1, enabling the flow guide outlet 8 to face the position of the control part and changing the outlet sectional area of the flow channel, namely enabling the sectional area of the outlet of the flow guide channel 5 to be smaller than the sectional area of the inlet of the flow guide channel 5 or enabling the sectional area of the outlet of the flow guide channel 5 to be smaller than the sectional area of the middle part of the flow guide channel 5, low-temperature and low-pressure suction gas can be sprayed to the installation position of the controller, so that the cooling back shell is strengthened, the cooling of the control panel is further strengthened, and the reliability problem.

In the invention, the auxiliary bearing 9 is arranged on the bearing seat at the joint position of the guide plate 4 and the bearing seat, namely, one or more through holes 10 are arranged at the inner side of the guide plate 4 close to the auxiliary bearing 9, so that the gas pressure increase caused by the section change of the guide channel 5 in the guide plate 4 can be utilized to guide part of low-temperature and low-pressure sucked gas to the position of the auxiliary bearing 9, the purpose of strengthening the oil-gas lubrication of the auxiliary bearing 9 is achieved, and the mechanical reliability of the compressor is improved.

Preferably, the baffle 4 is arranged in a semi-circular shape.

The compressor comprises a front shell 15, a static vortex 19, a movable vortex 20, a middle shell 16, a crankshaft 21, a motor 2, a rear shell assembly, a main bearing 22, an eccentric bearing 23 and other parts. The rear case 17 serves not only as a part of the housing 1, but also as a housing for mounting a bearing housing and a controller by being connected to the middle case 16, and the front case 15 is provided with an exhaust pipe 27 and mounting pins 28.

The rear shell component comprises a rear shell 17, a connecting terminal 24, an auxiliary bearing 9, a strong current male end, a weak current male end 25, a guide plate 4, a controller and other parts, wherein a strong current male end mounting hole 26 is formed in the rear shell 17.

Preferably, the front shell 15, the middle shell 16 and the rear shell 17 constitute the housing 1, a rear cover plate 18 is arranged on one side of the rear shell 17 far away from the middle shell 16, and the controller is arranged between the rear shell 17 and the rear cover plate 18.

Wherein, the guide plate 4 is fixedly connected with the rear shell 17.

The invention has IPM or IGBT installation surface on one side of the back shell 17 far away from the motor 2, the installation surface basically crosses the auxiliary bearing 9 on the bearing seat and reaches the opposite side position of the air suction port 6, the semi-annular guide plate 4 is fixed on one side of the bearing seat of the back shell 17 through bolts, the guide inlet 7 of the semi-annular guide plate corresponds to the air suction port 6 of the compressor and seals the outlet of the air suction pipe, so as to prevent low-temperature and low-pressure gas from the air suction pipe, and the low-temperature and low-pressure gas directly flows through the air gap of the motor 2 or the gap between the motor 2 and the shell 1 and flows to the compression cavity formed by dynamic and static vortexes under the action of the pressure difference between the compression cavity and.

Preferably, the motor 2 is mounted within the center housing 16.

The guide plate 4 is a semi-annular plastic part or sheet metal part. The guide plate 4 is provided with one or more partition plates 11 for dividing the gas channel, a plurality of guide channels 5 are formed by the partition plates 11, meanwhile, the guide plate 4 is also provided with a through hole 10 communicated with the gas channel on the auxiliary bearing seat, and the through hole 10 can be one or more circular through holes or rectangular through holes. The width of the partition plate 11, that is, the thickness of the partition plate 11, the partition plate 11 becomes thicker gradually near the diversion outlet 8, and the sectional area of the gas flow passage is reduced, so that the gas flow speed can be increased. Meanwhile, the thickness of the guide plate 4 at the guide outlet 8 is used as a design variable, and the aim of throttling and accelerating the outlet can be fulfilled by adjusting the parameter, and the flow direction of the airflow can be changed to achieve the aim of spraying to a target position.

Preferably, the width of the partition plate 11 near the guide outlet 8 and the thickness of the guide plate 4 near the guide outlet 8 may be used in combination or individually.

When the compressor works, low-temperature and low-pressure gas from the air suction pipe flows in the flow channel, airflow carding is realized due to the action of the partition plate 11, vortex noise is reduced, meanwhile, contact with the rear shell 17 is enhanced in the gas flowing process, the convection heat exchange effect is better than that of the prior art, the gas is guided to a target cooling position due to the change of the sectional area of the outlet of the guide plate 4, and the enhanced convection heat exchange is realized due to the accelerated flow of the gas.

The invention leads the pressure at the outlet to rise due to the throttling action of low-temperature and low-pressure gas in the flow channel, thereby leading part of the gas in the inner side flow channel to be discharged from the air channel communicated with the auxiliary bearing seat and enter the position of the auxiliary bearing, and realizing the cooling of the auxiliary bearing.

The invention has simple structure and easy manufacture, strengthens the cooling of the controller, improves the reliability of the compressor, eliminates the airflow noise, improves the comfort of users, strengthens the oil-gas lubrication of the auxiliary bearing 9 and improves the reliability of the compressor.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.