CN217055603U - Compressor air suction structure for electric vehicle - Google Patents

Abstract

The utility model discloses a compressor suction structure for electric motor car, including the main casing body and cavity, the cavity setting is in main casing body top, cavity and main casing body fixed connection, is equipped with the suction channel on the main casing body, is equipped with the inclined plane structure that is used for reducing the abrupt change throttle of passageway and produces the pressure drop on the inner wall of suction channel. The utility model provides a compressor structure of breathing in for electric motor car increases the suction channel, slows down the through flow area simultaneously and changes, weakens the throttling action, effectively reduces suction pressure loss, improves compressor work efficiency.

Description

Compressor air suction structure for electric vehicle

Technical Field

The utility model belongs to the technical field of the automobile parts technique and specifically relates to a compressor suction structure for electric motor car.

Background

For a new energy electric automobile, a heat management system becomes a large core system influencing the performance of the whole automobile, and a compressor is used as a core part of the heat management system to determine whether the heat management system can operate efficiently and reliably. And the performance index of the compressor is improved, so that the endurance mileage of the electric vehicle and the stable operation of the heat management system are very important. The compressor compresses low-temperature and low-pressure refrigerant gas from the evaporator into high-temperature and high-pressure gas through the change of the volume of the compression cavity, and then the high-temperature and high-pressure gas enters the condenser to be condensed. The suction pressure loss is reduced, the efficiency is improved, and the reliable and efficient operation of the compressor at low temperature is ensured.

The air suction part of the existing compressor scheme for the electric vehicle in the market consists of a main shell, a static scroll disk and a movable scroll disk, and refrigerant flows through an air suction channel from the cavity of the main shell and enters a compression cavity consisting of the static scroll disk and the movable scroll disk. The prior art does not fully consider the throttling effect generated by the sudden change of the area of a refrigerant flow passage to increase the suction pressure loss.

For example, a "compressor suction structure and compressor" disclosed in chinese patent literature, which is under the publication number CN205277833U, includes: the air inlet channel is arranged on the air cylinder and extends along the radial direction of the air cylinder, and the suction channel is arranged on the inner wall of the air cylinder and penetrates through two end faces of the air cylinder; the air inlet channel and the suction channel are communicated through a transition channel, the axial section of the transition channel gradually expands from one end close to the air inlet channel to one end far away from the air inlet channel, and the axial section of the transition channel is parallel to the axial direction of the air cylinder. The disadvantage is that the throttling effect generated by the sudden change of the refrigerant flow passage area is not fully considered, and the suction pressure loss is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming among the prior art compressor suction structure for electric motor car and having the passageway narrow, suction channel throttle effect produces loss of pressure, leads to breathing in the volume efficiency reduction, influences the problem of compressor efficiency, provides a compressor suction structure for electric motor car, and increase suction channel slows down the change of flow area simultaneously, weakens the throttle effect, effectively reduces suction loss of pressure, improves compressor work efficiency.

In order to realize the purpose, the utility model adopts the following technical scheme:

the utility model provides a compressor structure of breathing in for electric motor car, includes the main casing body and cavity, the cavity sets up in main casing body top, cavity and main casing body fixed connection, be equipped with the passageway of breathing in on the main casing body, be equipped with the inclined plane structure that is used for reducing passageway sudden change throttle and produces the pressure drop on the inner wall of passageway of breathing in. Through implementing above-mentioned technical scheme, overcome among the prior art compressor suction structure for electric motor car have the passageway narrow, suction channel throttling action produces loss of pressure, lead to breathing in the volumetric efficiency reduction, influence the problem of compressor efficiency, combine axial, radial increase suction channel, slow down the through-flow area change simultaneously, weaken the throttling action, effectively reduce suction pressure loss, improve compressor work efficiency. The cavity is fixed in main casing body top, flows through the air suction channel from main casing body intracavity and enters into the cavity, and the air suction channel inner wall adopts the inclined plane structure on the main casing body, realizes that the passageway area tightens up gradually, reduces passageway sudden change throttle and produces the pressure drop, has realized reducing the suction pressure loss through simple structure, and original cost, the volume of compressor are maintained basically, weight reduction simultaneously.

Preferably, the cavity comprises a fixed scroll and an orbiting scroll, the orbiting scroll is engaged with a lower end of the fixed scroll, and the fixed scroll and the orbiting scroll cooperate with each other to form a compression cavity. Refrigerant flows through the air suction channel from the cavity of the main shell body and enters a compression cavity formed by the fixed scroll disk and the movable scroll disk, the movable scroll disk makes translation around the fixed scroll disk, and the volume of an enveloped closed space is gradually reduced, so that the compression process is realized, and the refrigerant of the compressor enters the air suction cavity formed by the movable scroll disk and the fixed scroll disk along the air suction channel and starts the compression process.

Preferably, the suction passage includes a first suction passage and a second suction passage, and the first suction passage is disposed at a side close to the orbiting scroll. The cross sectional area of a first air suction channel arranged at one side close to the movable scroll disk is different from that of a second air suction channel arranged at one side far away from the movable scroll disk, so that the cross sectional area of the air suction channel is enlarged.

Preferably, the cross-sectional area of the second suction passage is larger than the cross-sectional area of the first suction passage. The main casing body is provided with the air suction channel for enlarging the axial distance, the main casing body is provided with the air suction channel for forming the radial dimension difference, the sectional area of the air suction channel is effectively expanded in two directions, the structure is simple and basically maintains the unchanged cost, the axial and radial combination is realized, the dimensional change of small increment is greatly increased, the sectional area of the air suction channel is not influenced on other structures of the original compressor, and the weight is reduced while the volume is basically maintained.

Preferably, a groove for increasing a path of the suction passage is provided on a mating surface of the main housing and the orbiting scroll. The grooves on the matching surfaces of the main shell and the movable scroll disk are used for increasing an air suction channel path, increasing the flow area of a refrigerant, reducing the air suction pressure loss, increasing the air suction efficiency, improving the efficiency of the compressor, synchronously reducing the weight of the main shell and reducing the cost.

Preferably, a sealing element is arranged on the main shell, and a chamfer is arranged at the joint of the sealing element and the main shell. The main casing body realizes setting up the scarf to sealing member junction structure through changing sealed mode, guarantees casing intensity and increases the passageway flow area of breathing in simultaneously by a wide margin, reduces main casing body weight, reduce cost.

Preferably, a supporting seat is arranged below the main shell, and an annular channel structure is arranged at the joint of the supporting seat and the main shell. The main casing body is arranged at the joint of the supporting seat structure and the casing structure to be an annular channel structure, so that the number of channels and the flow area of the channels are increased, and the purposes of reducing the cost and the weight are achieved.

Preferably, a reinforcing rib is arranged in the annular channel structure. And meanwhile, the strength of the shell is ensured by adding the connecting reinforcing ribs, and the strength of the annular channel structure is ensured.

Preferably, the outer structure of the suction channel is provided with an axial radial increment for expanding the suction channel. And performing axial and radial bidirectional increment on the structure outside the air suction channel to enlarge the air suction channel.

Preferably, the suction passage further comprises a third suction passage, a vent groove for dynamically increasing the flow area of the third suction passage is formed in the matching surface of the movable scroll and the main shell, and the vent groove is connected with the weight reduction balance groove. The bottom surface of the movable vortex disk, namely the surface matched with the main shell, is connected with the weight-reducing balance groove to form the vent groove, the structure dynamically increases the flow area of an air suction channel in the rotating process of the movable vortex disk, reduces the weight of the movable vortex disk, reduces the cost, reduces the rotating inertia force and the axial moment of the movable vortex disk, better realizes the dynamic balance design of a compressor transmission assembly, reduces the vibration noise of the compressor, and improves the stability and the reliability of the system operation.

The utility model discloses following beneficial effect has: (1) the suction channel is enlarged, the change of the flow area is slowed down, the throttling effect is weakened, the suction pressure loss is effectively reduced, and the working efficiency of the compressor is improved; (2) the suction pressure loss is reduced through a simple structure, the original cost and volume of the compressor are basically maintained, and the weight is reduced; (3) the flow area of the suction channel is dynamically increased, the movable scroll is lightened, the cost is reduced, the vibration noise of the compressor is reduced, and the stability and the reliability of the system operation are improved.

Drawings

In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. Like reference numerals having different letter suffixes may represent different examples of similar components. The drawings illustrate generally, by way of example, but not by way of limitation, various embodiments discussed herein.

FIG. 1 is a sectional view of the structure of the present invention;

FIG. 2 is a partial enlarged view of the present invention;

FIG. 3 is a schematic view of the structure of the groove of the present invention;

FIG. 4 is a schematic structural view of the second embodiment;

FIG. 5 is a schematic structural view of the third embodiment;

FIG. 6 is a schematic structural view of the fourth embodiment; .

In the figure: the vortex suction type air compressor comprises a main shell 1, a cavity 2, a static vortex disc 2.1, a dynamic vortex disc 2.2, an air suction channel 3, a first air suction channel 3.1, a second air suction channel 3.2, a third air suction channel 3.3, a slope structure 4, a groove 5, a diagonal plane 7, an annular channel structure 8 and a vent groove 9.

Detailed Description

The following are specific embodiments of the present invention, and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments, and the following embodiments do not limit the utility model according to the claims. Moreover, all combinations of features described in the embodiments are not necessarily essential to the solution of the invention.

It will be understood by those of ordinary skill in the art that all directional references (e.g., above, below, upward, above, downward, below, top, bottom, left, right, vertical, horizontal, etc.) are used descriptively in the figures to aid the reader's understanding, and do not imply (e.g., a limitation on position, orientation, or use, etc.) a limitation on the scope of the invention, which is defined by the claims appended hereto. Additionally, the term "substantially" may refer to slight imprecision or deviation in conditions, amounts, values, or dimensions, etc., some of which may be within manufacturing or tolerance limits.

The first embodiment is as follows:

as shown in fig. 1, 2 or 3, a compressor air suction structure for an electric vehicle comprises a main casing body 1 and a cavity 2, wherein the cavity 2 is arranged above the main casing body 1, the cavity 2 is fixedly connected with the main casing body 1, an air suction channel 3 is arranged on the main casing body 1, and an inclined surface structure 4 for reducing pressure drop caused by sudden throttling of the channel is arranged on the inner wall of the air suction channel 3. The cavity 2 comprises a fixed scroll 2.1 and a movable scroll 2.2, the movable scroll 2.2 is arranged at the lower end of the fixed scroll 2.1 in a meshed manner, and the fixed scroll 2.1 and the movable scroll 2.2 are mutually matched to form a compression cavity. Suction channel 3 includes first suction channel 3.1 and second suction channel 3.2, and first suction channel 3.1 is disposed on the side close to orbiting scroll 2.2. The cross-sectional area of the second suction channel 3.2 is larger than the cross-sectional area of the first suction channel 3.1. The mating surface of the main housing 1 and the orbiting scroll 2.2 is provided with a recess 5 for increasing the path of the suction passage.

Among the above-mentioned technical scheme, overcome among the prior art compressor suction structure for electric motor car have the passageway narrow, suction channel throttling action produces loss of pressure, lead to breathing in the volumetric efficiency reduction, influence the problem of compressor efficiency, combine axial, radial increase suction channel, slow down the through-flow area change simultaneously, weaken the throttling action, effectively reduce suction pressure loss, improve compressor work efficiency. The cavity 2 is fixed in main casing body 1 top, flows through the suction channel from main casing body 1 intracavity and enters into in the cavity 2, and the suction channel inner wall adopts the inclined plane structure on the main casing body 1, realizes that the passage area tightens up gradually, reduces the passageway sudden change throttle and produces the pressure drop, has realized reducing the suction pressure loss through simple structure, and maintains original cost, the volume of compressor basically, lightens weight simultaneously. Refrigerant flows through a gas suction channel from the cavity of the main shell 1 and enters a compression cavity formed by the fixed scroll 2 and the movable scroll 3, the movable scroll makes translation around the fixed scroll, and the volume of an enveloped closed space is gradually reduced, so that the compression process is realized, and the refrigerant of the compressor enters the gas suction cavity formed by the movable scroll and the fixed scroll along the gas suction channel and starts the compression process. The cross section area of a first suction channel 3.1 arranged at one side close to the movable scroll disk 2.2 is different from that of a second suction channel 3.2 arranged at one side far from the movable scroll disk 2.2, and the cross section area of the suction channels is enlarged. The last air suction channel of main casing body 1 enlarges the axial distance, and the air suction channel of main casing body 1 forms radial dimension poor, and effective two-way expansion air suction channel sectional area, simple and maintain the unchangeable structure of cost basically, and the axial radial combines, and the size change that has realized little increment increases air suction channel sectional area by a wide margin, does not have the influence to other structures of former compressor, lightens weight when maintaining the volume basically. The grooves on the matching surfaces of the main shell 1 and the movable scroll 2.2 are used for increasing the path of a suction channel, increasing the flow area of a refrigerant, reducing the suction pressure loss, increasing the suction efficiency, improving the efficiency of the compressor, synchronously reducing the weight of the main shell 1 and reducing the cost.

The second embodiment is as follows:

as shown in fig. 4, in embodiment 1, unlike embodiment 1, a seal is provided on the main casing 1, and a chamfered surface 7 is provided at a connection portion of the seal and the main casing 1.

Among the above-mentioned technical scheme, main casing body 1 realizes setting up scarf 7 to sealing member junction structure through changing sealed mode, guarantees that casing intensity increases the 3 route flow area of passageway of breathing in simultaneously by a wide margin, reduces main casing body 1 weight, reduce cost.

The third concrete embodiment:

as shown in fig. 5, in embodiment 1, different from embodiment 1, a support seat is provided below the main housing 1, and an annular channel structure 8 is provided at the connection of the support seat and the main housing 1. The annular channel structure 8 is internally provided with a reinforcing rib.

Among the above-mentioned technical scheme, the main casing body sets up to annular channel structure at supporting seat structure and shell structure junction, increases the passageway quantity and the flow area of passageway, realizes reducing this and subtracts heavy. And meanwhile, the connection reinforcing ribs are added to ensure the strength of the shell and the strength of the annular channel structure 8.

The fourth concrete example:

as shown in fig. 6, in embodiment 1, different from embodiment 1, the suction passage 3 further includes a third suction passage 3.3, a vent groove 9 for dynamically increasing the flow area of the third suction passage 3.3 is provided on the mating surface of the orbiting scroll 2.2 and the main casing 1, and the vent groove 9 is connected to the weight reduction balance groove.

Among the above-mentioned technical scheme, at the activity whirlpool dish 2.2 bottom surface, promptly with main casing body 1 fitting surface on, connect and subtract heavy balance groove and set up vent groove 9, this structure is in activity whirlpool dish 2.2 rotation in-process, the circulation area of third suction channel 3.3 is dynamically increased, subtract heavy whirlpool dish 2.2 simultaneously, reduce cost, reduce activity whirlpool dish 2.2 rotatory inertia power and axial moment, better realization compressor drive assembly's dynamic balance design, reduce compressor vibration noise, the stability and the reliability of system operation are improved.

Although some terms are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention. The order of execution of the operations, steps, and the like in the apparatuses and methods shown in the specification and drawings may be implemented in any order as long as the output of the preceding process is not used in the subsequent process, unless otherwise specified. The descriptions using "first", "next", etc. for convenience of description do not imply that they must be performed in this order.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (10)

1. The utility model provides a compressor suction structure for electric motor car, includes main casing body (1) and cavity (2), its characterized in that, cavity (2) set up in main casing body (1) top, cavity (2) and main casing body (1) fixed connection, be equipped with inspiratory channel (3) on main casing body (1), be equipped with on the inner wall of inspiratory channel (3) and be used for reducing inclined plane structure (4) that the throttle of passageway sudden change produced the pressure drop.

2. A compressor suction structure for an electric vehicle according to claim 1, wherein the chamber (2) includes a fixed scroll (2.1) and a movable scroll (2.2), the movable scroll (2.2) is engaged with a lower end of the fixed scroll (2.1), and the fixed scroll (2.1) and the movable scroll (2.2) are engaged with each other to form a compression chamber.

3. A compressor suction structure for electric vehicle according to claim 1, wherein said suction passage (3) comprises a first suction passage (3.1) and a second suction passage (3.2), said first suction passage (3.1) being provided at a side close to orbiting scroll (2.2).

4. A compressor suction structure for electric vehicles according to claim 3, characterized in that the cross-sectional area of said second suction channel (3.2) is greater than the cross-sectional area of said first suction channel (3.1).

5. A compressor suction structure for electric vehicle according to claim 2, wherein a recess (5) for increasing the path of the suction passage (3) is provided on the mating surface of the main housing (1) and the orbiting scroll (2.2).

6. The compressor air suction structure for the electric vehicle according to the claim 1 or 5, characterized in that a sealing element is arranged on the main shell (1), and a chamfer (7) is arranged at the joint of the sealing element and the main shell (1).

7. The compressor air suction structure for the electric vehicle according to claim 5, characterized in that a support seat is arranged below the main shell (1), and an annular channel structure (8) is arranged at the joint of the support seat and the main shell (1).

8. Compressor suction structure for electric vehicles, according to claim 7, characterized in that said annular channel structure (8) is provided with reinforcing ribs.

9. A compressor suction structure for electric vehicles according to claim 5, characterized in that the outer structure of the suction channel (3) is provided with axial and radial increments for enlarging the suction channel (3).

10. The compressor suction structure for the electric vehicle according to claim 5, wherein the suction passage (3) further comprises a third suction passage (3.3), a ventilation groove (9) for dynamically increasing the flow area of the third suction passage (3.3) is formed on the matching surface of the movable scroll (2.2) and the main shell (1), and the ventilation groove (9) is connected with the weight reduction balance groove.

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