Multifunctional compression system

Abstract

The invention relates to a multifunctional compression system which comprises a refrigerator compressor, and the refrigerator compressor comprises a compressor main shaft; the air compressor comprises an air compressor main shaft; the motor comprises a motor main shaft arranged in a penetrating manner; the first end of the motor spindle is in transmission connection with the compressor spindle; and the second end of the motor main shaft is in transmission connection with the air compressor main shaft through an overrun clutch for unidirectional rotation. Through the arrangement that the single motor is matched with the overrun clutch, operation of the refrigerator compressor and the air compressor can be in butt joint at the same time.

Description

Technical Field

[0001] The present invention relates to the field of new energy vehicles, and in particular to a multifunctional compression system. Background Art

[0002] The description in this section merely provides background information related to the present disclosure and may not constitute prior art.

[0003] As users' demands for passenger car comfort become increasingly higher, car refrigerators and air suspension technologies have received widespread attention and use. Car refrigerators operate with the help of a refrigerator compressor, while air suspensions operate with the help of an air compressor. Technically, the refrigerator system and the air suspension system each have two compressors, each requiring a corresponding motor to operate. Furthermore, the dual-compressor design takes up space and affects the lightweight layout of the vehicle. Cost-wise, the combined procurement and maintenance costs of the independent refrigerator compressor and motor drive the price of the vehicle. User experience-wise, the low-frequency noise generated by the refrigerator compressor near the cabin directly affects driving quietness. Therefore, existing technologies use two motors within the same vehicle body to drive the refrigerator system and the air compressor system, respectively, which impacts the overall product performance.

[0004] It should be noted that the above technical background is merely provided to provide a clear and complete description of the technical solutions of the present invention and to facilitate understanding by those skilled in the art. Simply because these solutions are described in the technical background section of the present invention, it should not be assumed that the above technical solutions are well known to those skilled in the art. Summary of the Invention

[0005] The purpose of the present invention is to provide a multifunctional compression system that can simultaneously connect the operation of a refrigerator compressor and an air compressor through the arrangement of a single motor and an overrunning clutch.

[0006] In order to achieve the above object, the present invention discloses the following multifunctional compression system, which comprises:

[0007] A refrigerator compressor, the refrigerator compressor comprising a compressor main shaft;

[0008] An air compressor, the air compressor comprising an air compressor main shaft;

[0009] A motor, the motor comprising a motor shaft having a first end and a second end disposed opposite to each other;

[0010] The first end of the motor main shaft is drivingly connected to the compressor main shaft;

[0011] The second end of the motor main shaft is transmission-connected to the air compressor main shaft via an overrunning clutch for unidirectional rotation.

[0012] As a further description of the above technical solution, the refrigerator compressor also includes a cylinder body, and the cylinder body is connected to the motor through a motor base.

[0013] As a further description of the above technical solution, an air compressor bearing, a bearing limiting corrugated plate, a shaft seal ring, a shaft seal and a thrust bearing are sequentially sleeved between the first end of the motor main shaft and the compressor main shaft in the direction from the second end to the first end, and are limited in the cylinder body of the refrigerator compressor.

[0014] As a further description of the above technical solution, the outer wall of the shaft seal fits against the inner wall of the cylinder of the refrigerator compressor, so that the first end side and the second end side of the shaft seal are completely isolated by the shaft seal.

[0015] As a further description of the above technical solution, the bearing limiting corrugated plate has elasticity in the axial direction, and the bearing limiting corrugated plate is snap-fitted with the inner wall of the cylinder body.

[0016] As a further description of the above technical solution, a counterweight block and a deep groove ball bearing are sequentially sleeved between the second end of the motor main shaft and the air compressor main shaft along the direction from the first end to the second end, wherein the counterweight block is sleeved outside the overrunning clutch.

[0017] The present invention also discloses a motor, wherein the motor includes a motor main shaft arranged therethrough, the motor main shaft having a first end and a second end arranged opposite to each other, the second end of the motor main shaft being sleeved with an overrunning clutch for one-way rotation, the first end of the motor main shaft being used to drive the compressor main shaft to rotate, and the second end of the motor main shaft being used to drive the air compressor to rotate.

[0018] As a further description of the above technical solution, the first end of the motor is provided with a motor base for connecting to the cylinder body of the refrigerator compressor.

[0019] As a further description of the above technical solution, the motor further includes a sleeve, which is sleeved outside the motor, and a first end of the sleeve is connected to the motor base.

[0020] As a further description of the above technical solution, the compressor main shaft is away from the motor main shaft and is transmission-connected to the piston.

[0021] By means of the above technical solution, the beneficial effects of the present invention are as follows:

[0022] The multifunctional compression system of the present invention can simultaneously connect the operation of the refrigerator compressor and the air compressor through the setting of a single motor and an overrunning clutch. Specifically, the first end and the second end of the motor main shaft of the motor can rotate synchronously, and the motor itself can drive the motor main shaft to rotate forward or reverse. In the present invention, an overrunning clutch for controlling unidirectional rotation is installed on the side of the second end of the motor that connects to the air compressor. Therefore, regardless of whether the motor rotates forward or reverse, the refrigerator compressor that needs to be kept running for a long time can always be driven to run, while the air compressor that only needs temporary short-term operation can only run in the forward rotation state. Therefore, it is possible to control the operation of two systems with a single motor only by controlling the forward and reverse rotation of the motor, saving costs and reducing noise levels.

[0023] To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only for reference and illustration and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this specification. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0025] Figure 1 This is an exploded schematic diagram of a multifunctional compression system provided in an embodiment of this specification;

[0026] Figure 2 is a cross-sectional schematic diagram of a multifunctional compression system provided in an embodiment of this specification;

[0027] Figure 3 This is a schematic diagram of the installation of an overrunning clutch of a multifunctional compression system provided in an embodiment of this specification;

[0028] In the picture:

[0029] 1. Refrigerator compressor; 11. Compressor main shaft; 12. Cylinder block; 13. Piston;

[0030] 2. Air compressor; 21. Air compressor main shaft;

[0031] 3. Motor; 31. Motor main shaft; 32. Motor base; 33. Air compressor bearing; 34. Bearing limit corrugated plate; 35. Shaft seal retaining ring; 36. Shaft seal; 37. Thrust bearing; 38. Overrunning clutch; 39. Counterweight; 310. Deep groove ball bearing; 311. Sleeve. DETAILED DESCRIPTION

[0032] To help those skilled in the art better understand the technical solutions in this specification, the following will provide a clear and complete description of the technical solutions in the embodiments of this specification, in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of this specification, not all of them. All other embodiments derived by those skilled in the art based on the embodiments in this specification without creative effort shall fall within the scope of protection of this specification.

[0033] The following is an explanation of the embodiments of the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted according to actual dimensions. It is stated in advance. The following embodiments will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention.

[0034] It should be understood that although terms such as "first," "second," and "third" may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. In addition, the term "or" as used herein may include any one or more combinations of the associated listed items, as appropriate.

[0035] See Figure 1-3 , is a multifunctional compression system of this embodiment, wherein the multifunctional compression system includes:

[0036] A refrigerator compressor 1, the refrigerator compressor 1 includes a compressor main shaft 11;

[0037] Air compressor 2, air compressor 2 includes an air compressor main shaft 21;

[0038] The motor 3 includes a motor shaft 31 extending therethrough, and the motor shaft 31 has a first end and a second end opposite to each other;

[0039] The first end of the motor main shaft 31 is in driving connection with the compressor main shaft 11, so that when the motor 3 rotates forward, the first end of the motor main shaft 31 can drive the compressor main shaft 11 to rotate in a first direction, and when the motor 3 rotates reversely, the first end of the motor main shaft 31 can drive the compressor main shaft 11 to rotate in a second direction;

[0040] The second end of the motor main shaft 31 is connected to the air compressor main shaft 21 through an overrunning clutch 38 for unidirectional rotation, so that when the motor 3 rotates forward, the second end of the motor main shaft 31 can drive the air compressor main shaft 21 to rotate along the third direction. When the motor 3 rotates reversely, the second end of the motor main shaft 31 idles and the air compressor main shaft 21 is stationary.

[0041] Through the above structure, when in use, the operator can input commands through an external vehicle-mounted computer host. The vehicle-mounted computer host is used to control the operation of the motor 3, and is used to control the start and stop, forward rotation, reverse rotation, or the speed of the motor 3.

[0042] Specifically, in the default state, the motor 3 is in the reverse state. In the reverse state, the motor shaft 31 of the motor 3 rotates, and the first end of the motor shaft 31 drives the compressor shaft 11 to rotate in the second direction, which is the reverse direction in this embodiment. The compressor shaft 11 drives the piston in the refrigerator compressor 1 to move, compressing the refrigerant, so that the vehicle refrigerator remains refrigerated. At the same time, because the second end of the motor shaft 31 is connected to an overrunning clutch 38, specifically, the overrunning clutch 38 is a one-way bearing that is locked in the forward rotation and rotates freely in the reverse rotation. Therefore, during the reverse rotation, the two ends of the overrunning clutch 38 cannot achieve a rotational connection, so that the motor shaft 31 cannot drive the air compressor shaft 21 to rotate synchronously. Therefore, the air compressor shaft 21 is not controlled by the motor shaft 21. Finally, only the refrigerator compressor 1 drives the vehicle refrigerator to operate in a refrigeration manner.

[0043] In special circumstances, when the operator wishes to adjust the height of the air suspension, they input a command through the vehicle computer, instructing it to control motor 3 to rotate forward. In this forward rotation state, motor 3's motor shaft 31 rotates, and the first end of motor shaft 31 drives compressor shaft 11 to rotate in a first direction (in this embodiment, the forward direction). This causes compressor shaft 11 to move the piston in refrigerator compressor 1, compressing the refrigerant and maintaining the vehicle refrigerator's cooling. Simultaneously, overrunning clutch 38 is locked in the forward rotation state. Therefore, during forward rotation, the two ends of overrunning clutch 38 are rotationally connected, causing motor shaft 31 to drive compressor shaft 21 to rotate in a third direction (in this embodiment, the forward direction). This causes compressor shaft 21 to move the corresponding piston on the compressor side, achieving adjustment of the air suspension's firmness and height to meet the operator's needs. Meanwhile, refrigerator compressor 1 continues to drive the vehicle refrigerator in cooling operation.

[0044] Of course, the above-mentioned “forward” and “reverse” are two relative directions, which can be replaced and have no limiting meaning.

[0045] After the operator has adjusted the air suspension to its proper position, he inputs a command through the on-board computer host to control the on-board computer to reverse the motor 3. At this time, the transmission connection between the second end of the motor main shaft 31 and the dynamic air compressor main shaft 21 is eliminated, the air suspension is maintained, and the on-board air conditioner continues to run.

[0046] Among them, the overrunning clutch 38 can adopt a conventional multi-ring one-way bearing, similar to a ratchet structure. The overrunning clutch 38 can rotate freely in one direction (in the reverse direction of the motor 3 in this embodiment), and is locked in the other direction (in the forward direction of the motor 3 in this embodiment). The metal shell of the overrunning clutch 38 contains many rollers, needles or balls, and the shape of its rolling seat (hole) makes it only able to roll in one direction, while it will generate great resistance in the other direction. When resistance is generated, the two ends of the overrunning clutch 38 can be connected in rotation, so that the motor main shaft 31 drives the air compressor main shaft 21 to rotate.

[0047] Of course, in other embodiments, other types of clutches may also be used, as long as they can achieve locking of the motor main shaft 31 in the forward direction and disengagement in the reverse direction.

[0048] The refrigerator compressor also includes a cylinder 12, and the cylinder 12 is connected to the motor 3 via a motor base 32. The motor 3 in this embodiment is as shown in FIG. Figure 1 As shown, it is configured as a cone with a reduced radial dimension at the first end, and the motor base 32 is just sleeved on the cone structure. The contact surface between the motor base 32 and the motor 3 is large to achieve a better sealed connection.

[0049] Please see further Figure 1 、 2 Between the first end of the motor main shaft 31 and the compressor main shaft 11, an air compressor bearing 33, a bearing stop corrugated plate 34, a shaft seal retaining ring 35, a shaft seal, and a thrust bearing 37 are sequentially sleeved along the direction from the second end to the first end, and are restrained within the cylinder body 12 of the refrigerator compressor. The air compressor bearing 33 primarily serves to directly connect to the motor main shaft 31 and primarily bear radial loads perpendicular to the axis of the motor main shaft 31, maintaining the radial concentricity of the rotor and reducing friction to ensure smooth rotation. Similarly, the thrust bearing 37 is positioned closest to the compressor main shaft 11 and primarily serves to bear axial thrust in a direction parallel to the axis of the rotating shaft, preventing the rotor from overrunning due to the axial force generated by the pressure difference. The bearing stop corrugated plate 34 is axially elastic and is used to apply a constant axial preload, eliminate bearing clearance, suppress vibration, and increase stiffness. Through the elastic deformation of its own wave spring, it applies an initial force to both ends in the axial direction, maintaining stable contact.

[0050] The structure of the shaft seal retaining ring 35 and the shaft seal 36 in this embodiment is the most different from the existing connection structure. Since the refrigerator compressor 1, air compressor 2 and motor 3 in this embodiment may actually be connected, and the refrigerator compressor 1 side is mainly used for refrigerant processing, and the air compressor 2 side is mainly used for air processing, and the refrigerant and air cannot contact each other, the shaft seal retaining ring 35 and the shaft seal 36 are required to effectively block the compressor 1 and the air compressor 2 to prevent contact between the refrigerant and the air. Specifically, the outer wall of the shaft seal 36 is in contact with the inner wall of the cylinder body 12 of the refrigerator compressor 1, so that the first end side and the second end side of the shaft seal 36 are completely isolated by the shaft seal 36.

[0051] In the above embodiment, the shaft seal 36 may be in the form of Figure 2 The ring shown has a groove along the axial direction and is tightly pressed against the inner wall of the cylinder body 12 at the outer periphery, effectively preventing gas and liquid from passing through it. The shaft seal retaining ring 35 is configured as an elastic or C-shaped spring retaining ring installed in the shaft groove, used to axially locate and fix the shaft seal 36 as a sealing member. The retaining ring is clamped in the groove, and when the shaft seal 36 presses against the shaft seal retaining ring 35, it is precisely fixed in place.

[0052] Please continue to see Figure 1-3 A counterweight 39 and a deep groove ball bearing 310 are sequentially sleeved between the second end of the motor main shaft 21 and the air compressor main shaft 11 in the direction from the first end to the second end, wherein the counterweight 39 is sleeved outside the overrunning clutch 38. The function of the counterweight 39 is mainly to match the crank structure on one side of the air compressor main shaft 21 to balance the unbalanced components of the reciprocating inertia force of the piston and the rotational inertia force of the crank to prevent excessive vibration, thereby effectively maintaining the stable rotation of the air compressor main shaft 21. In this embodiment, the overrunning clutch 38 is installed in the counterweight 39, which saves more axial space and avoids the disengagement of the overrunning clutch 38, thereby having a certain limiting effect on it. The deep groove ball bearing 310 is used to simultaneously bear large radial loads and bidirectional axial loads, forming a stable support effect between the motor main shaft 31 and the air compressor main shaft 21 structure.

[0053] The present invention also protects a motor 3 as mentioned above, whose motor main shaft 31 can synchronously output two corresponding structures from the directions of both ends. Since the second end of the motor 1 has a sleeved overrunning clutch 38 device, it has different effects in forward and reverse rotation. In the forward rotation, it can provide a stable transmission connection to the structure at the second end, and in the reverse rotation, it disconnects the transmission connection to the air compressor main shaft 21 and other structures.

[0054] At the same time, a motor base 32 is installed at the first end of the motor 3 in this embodiment, and a sleeve 311 is also provided to cover the outer wall of the motor 3. The first end of the sleeve 311 is installed with the motor 3, and the second end of the sleeve 311 is docked with the structure of the air compressor 2. A permanent magnet is attached to the inner wall of the sleeve 311, which serves as the stator of the motor 3.

[0055] In this embodiment, the compressor main shaft 11 is away from the motor main shaft 31 and is connected to the piston 13 in a transmission manner, so that no matter whether the compressor main shaft 11 rotates forward or reversely under the drive of the motor main shaft 31, the piston 13 can regularly compress the refrigerant to keep the refrigerator running continuously.

[0056] The contents disclosed above are only preferred feasible embodiments of the present invention and do not limit the scope of the patent application of the present invention. Therefore, all equivalent technical changes made using the contents of the description and drawings of the present invention are included in the scope of the patent application of the present invention.

[0057] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0058] Although the present application has been described through embodiments, those skilled in the art will appreciate that there are many modifications and variations to the present application without departing from the spirit of the present application. It is intended that the appended embodiments include these modifications and variations without departing from the present application.

Claims

1. A multifunctional compression system, characterized in that: The multifunctional compression system comprises: A refrigerator compressor, the refrigerator compressor comprising a compressor main shaft; An air compressor, the air compressor comprising an air compressor main shaft; A motor, the motor comprising a motor shaft having a first end and a second end disposed opposite to each other; The first end of the motor main shaft is drivingly connected to the compressor main shaft; The second end of the motor main shaft is transmission-connected to the air compressor main shaft via an overrunning clutch for unidirectional rotation.

2. The multifunctional compression system according to claim 1, characterized in that: The refrigerator compressor further comprises a cylinder body, and the cylinder body is connected to the motor via a motor base.

3. The multifunctional compression system according to claim 2, characterized in that: An air compressor bearing, a bearing limiting corrugated plate, a shaft seal ring, a shaft seal and a thrust bearing are sequentially sleeved between the first end of the motor main shaft and the compressor main shaft along the direction from the second end to the first end, and are limited in the cylinder body of the refrigerator compressor.

4. The multifunctional compression system according to claim 3, characterized in that: The outer wall of the shaft seal is in contact with the inner wall of the cylinder of the refrigerator compressor, so that the first end side and the second end side of the shaft seal are completely isolated by the shaft seal.

5. The multifunctional compression system according to claim 3, characterized in that: The bearing limiting corrugated piece has elasticity in the axial direction, and the bearing limiting corrugated piece is clamped with the inner wall of the cylinder body.

6. The multifunctional compression system according to claim 1, characterized in that: A counterweight and a deep groove ball bearing are sequentially sleeved between the second end of the motor main shaft and the air compressor main shaft along the direction from the first end to the second end, wherein the counterweight is sleeved outside the overrunning clutch.

7. A motor, characterized in that: The motor includes a motor main shaft arranged through it, the motor main shaft having a first end and a second end arranged opposite to each other, the second end of the motor main shaft being sleeved with an overrunning clutch for one-way rotation, the first end of the motor main shaft being used to drive the compressor main shaft to rotate, and the second end of the motor main shaft being used to drive the air compressor to rotate.

8. The motor according to claim 7, characterized in that: The first end of the motor is sleeved with a motor base for connecting to the cylinder body of the refrigerator compressor.

9. The motor according to claim 8, characterized in that: The motor further comprises a sleeve, which is sleeved outside the motor, a first end of the sleeve being connected to the motor base, and a second end of the sleeve being connected to the air compressor.

10. The motor according to claim 1, characterized in that: The compressor main shaft is away from the motor main shaft and is drivingly connected to the piston.

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