Integrated cooling device for oil-cooled motor and oil-cooled motor

Abstract

The utility model belongs to oil -cooled motor technical field discloses an integral type cooling device and oil -cooled motor for oil -cooled motor. In the device, the first oil hole, second oil hole, third oil hole, oil passage are seted up on the end cover, and the first installation position is embedded, the inner peripheral wall shape of first installation position is identical with the appearance of oil pump, the oil hole is seted up on first installation position, the oil pump is embedded in first installation position, and its oil outlet end is placed at oil hole, the oil inlet end of first oil hole is communicated with motor inside, and the oil outlet end is communicated with the oil inlet end of oil pump, one end of oil passage is communicated with oil hole, and the other end is communicated with second oil hole, the oil cooler is fixed on the side of end cover away from motor inside, and its oil inlet end is communicated with second oil hole, and the oil outlet end is communicated with third oil hole. The utility model has the advantages of small space occupation and simple oil circuit structure.

Description

Technical Field

[0001] This utility model relates to the field of oil-cooled motor technology, specifically to an integrated cooling device for oil-cooled motors and an oil-cooled motor. Background Technology

[0002] During motor operation, heat dissipation components such as windings need to be cooled to ensure motor operating efficiency and meet actual operating requirements.

[0003] In existing technologies, motors are classified into oil-cooled motors, water-cooled motors, and air-cooled motors based on their heat dissipation methods. Oil-cooled motors dissipate heat through heat exchange via a flowing coolant within the motor; water-cooled motors dissipate heat through the flow of cooling water in internal cooling pipes; and air-cooled motors dissipate heat by using cooling fans and other devices to improve convection efficiency between the motor's interior and the external environment. Because oil-cooling offers advantages in heat dissipation efficiency and stability compared to water-cooling and air-cooling methods, it has wider applications.

[0004] However, current oil-cooled motors require independent design of oil pumps, oil coolers, and corresponding oil pipelines when deploying cooling devices, which leads to defects such as large axial space occupation, complex oil passage structure, and high processing costs for the entire oil-cooled motor. Utility Model Content

[0005] The purpose of this utility model is to provide an integrated cooling device and an oil-cooled motor for oil-cooled motors, so as to solve the technical problems that existing cooling devices, when deployed on motors, result in large axial space occupation, complex oil passage structure, and high processing costs for the entire oil-cooled motor.

[0006] To achieve the above objectives, the present invention proposes the following technical solution: In the first aspect, this technical solution provides an integrated cooling device for an oil-cooled motor, including: an end cover, and an oil cooler and an oil pump integrated on the end cover; The end cap is provided with a first oil hole, a second oil hole, a third oil hole, and an oil passage, and is fitted with a first mounting position; wherein, the inner peripheral wall shape of the first mounting position is consistent with the outer shape of the oil pump, and an oil passage hole is provided on the first mounting position; The oil pump is embedded in the first mounting position, with its oil outlet end located at the oil passage hole; the oil inlet end of the first oil passage hole is connected to the inside of the motor, and the oil outlet end is connected to the oil inlet end of the oil pump; one end of the oil passage channel is connected to the oil passage hole, and the other end is connected to the second oil hole; the oil cooler is fixed on the side of the end cover away from the inside of the motor, with its oil inlet end connected to the second oil hole and its oil outlet end connected to the third oil hole.

[0007] Furthermore, a machining hole is provided on the first mounting position, and the machining hole is symmetrically arranged with the oil passage hole.

[0008] Furthermore, the oil passage hole is coaxially arranged with the oil passage channel, and the diameter of the oil passage hole is consistent with the diameter of the oil passage channel.

[0009] Furthermore, including an oil filter, the end cap is provided with a second mounting position; wherein, the inner peripheral wall shape of the second mounting position is consistent with the outer shape of the oil filter and is connected to the first oil hole; The oil filter is located in the second mounting position, with its oil inlet end positioned at the junction of the second mounting position and the first oil hole, and its oil outlet end connected to the oil inlet end of the oil pump.

[0010] Furthermore, the first installation position in the empty area at the lower end of the end cover is an irregularly shaped sleeve structure that extends vertically towards the inside of the motor along the corresponding position of the end cover.

[0011] Furthermore, the second installation position in the empty area at the lower end of the end cover is an irregularly shaped sleeve structure that extends vertically away from the inside of the motor along the corresponding position of the end cover.

[0012] Furthermore, the first mounting position and the second mounting position are internally connected.

[0013] Furthermore, it includes a sealing ring; the sealing ring is fitted onto the oil inlet end of the first oil hole.

[0014] Furthermore, the end cap is provided with a plurality of reinforcing ribs, which are arranged radially on the end cap.

[0015] Secondly, this technical solution provides an oil-cooled motor, characterized in that it includes the aforementioned cooling device.

[0016] Beneficial effects: This technical solution provides an integrated cooling device for oil-cooled motors to solve the technical defects of existing oil-cooled motors, such as large axial space, complex oil circuits, and high cost.

[0017] The cooling device includes an end cover, and an oil cooler and an oil pump integrated on the end cover. Specifically, the end cover has a first oil hole, a second oil hole, a third oil hole, and an oil passage, and is fitted with a first mounting position; wherein, the inner peripheral wall shape of the first mounting position is consistent with the outer shape of the oil pump, and an oil passage is formed on the first mounting position. The oil pump is embedded in the first mounting position, and its oil outlet is located at the oil passage; the oil inlet of the first oil hole communicates with the inside of the motor, and the oil outlet is connected to the oil inlet of the oil pump; one end of the oil passage is connected to the oil passage, and the other end is connected to the second oil hole; the oil cooler is fixed on the side of the end cover away from the inside of the motor, its oil inlet is connected to the second oil hole, and its oil outlet is connected to the third oil hole.

[0018] Therefore, this technical solution integrates all relevant cooling devices onto the end cover, with corresponding oil holes and oil passages within the end cover. These oil holes and passages allow the cooling oil, heated inside the motor, to be cooled by the oil pump before entering the cooler and then back into the motor. This achieves motor oil cooling while significantly shortening the motor's axial length without increasing radial space. Furthermore, the built-in oil passage design effectively simplifies the complexity and deployment difficulty of the oil circuit. Moreover, this technical solution offers the advantages of convenient assembly and rapid installation of the cooling device.

[0019] It should be understood that all combinations of the foregoing concepts and the additional concepts described in more detail below can be considered as part of the utility model subject matter of this disclosure, provided that such concepts do not contradict each other.

[0020] The foregoing and other aspects, embodiments, and features of the present invention will be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present invention, such as features and / or beneficial effects of exemplary embodiments, will become apparent from the following description or may be learned through practice of specific embodiments according to the teachings of the present invention. Attached Figure Description

[0021] The accompanying drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in the various figures may be denoted by the same reference numeral. For clarity, not every component is labeled in each figure. Embodiments of various aspects of the present invention will now be described by way of example and with reference to the accompanying drawings, wherein: Figure 1 This is a schematic diagram of the integrated cooling device for oil-cooled motors described in this embodiment; Figure 2 This is a cross-sectional view of the end cap described in this embodiment. Figure 3 To Figure 2 A schematic diagram of the structure after cross-section along the horizontal direction; Figure 4 This is a schematic diagram of the structure of the oil-cooled motor described in this embodiment.

[0022] The attached diagram is labeled as follows: 1 is the end cap, 2 is the oil cooler, 3 is the oil pump, and 4 is the oil filter; 101 is the first oil hole, 102 is the second oil hole, 103 is the third oil hole, 104 is the oil passage, 105 is the first mounting position, 106 is the second mounting position, and 107 is the reinforcing rib; 105a is the oil passage hole, and 105b is the machining hole. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art to which this utility model pertains.

[0024] The terms "first," "second," and similar words used in this utility model patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, unless the context clearly indicates otherwise, the singular forms of "an," "a," or "the," etc., do not indicate a quantity limitation, but rather indicate the presence of at least one. Terms such as "comprising" or "including" indicate that the element or object preceding "comprising" encompasses the features, integrals, steps, operations, elements, and / or components listed following "comprising" or "including," and do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or collections thereof. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0025] For existing oil-cooled motors, the cooling system requires the oil pump and oil cooler to be mounted on the housing, with separate oil piping designs. This results in problems such as large axial space occupation, complex oil passage connections, significant and difficult housing machining, and high overall cost. Therefore, this embodiment aims to provide an integrated cooling device for oil-cooled motors, simultaneously addressing the aforementioned technical shortcomings.

[0026] The integrated cooling device for oil-cooled motors disclosed in this utility model will be further described in detail below with reference to the embodiments shown in the accompanying drawings.

[0027] Combination Figure 1-3 As shown, the cooling device fixes the oil cooler and oil pump to the end cover, and integrates the corresponding oil passages into the end cover through the end cover design. Under the conditions of limited axial space and low structural processing difficulty, the cooling of the motor can be completed under the requirement of shortening the axial length, which has high economy and manufacturing convenience.

[0028] Specifically, the cooling device includes an end cover 1, an oil cooler 2, and an oil pump 3 integrated on the end cover. In terms of specific structural configuration, the end cover 1 has a first oil hole 101, a second oil hole 102, a third oil hole 103, and an oil passage 104, and is fitted with a first mounting position 105. The first mounting position 105 is used to mount the oil pump 3; therefore, the inner circumferential wall shape of the first mounting position 105 is consistent with the outer shape of the oil pump 3, and an oil passage hole 105a is formed on the first mounting position 105. The oil pump 3 is embedded in the first mounting position 105, and its oil outlet is located at the oil passage hole 105a. The oil inlet end of the first oil hole 101 communicates with the inside of the motor, and the oil outlet end communicates with the oil inlet end of the oil pump 3. One end of the oil passage 104 communicates with the oil passage hole 105a, and the other end communicates with the second oil hole 102. The oil cooler 2 is fixed on the side of the end cover 1 away from the inside of the motor. Its oil inlet end is connected to the second oil hole 102, and its oil outlet end is connected to the third oil hole 103.

[0029] In practical implementation, to prevent oil leakage, a sealing ring is fitted onto the oil inlet end of the first oil hole 101. In this embodiment, the first oil hole 101 is an O-ring. To facilitate the entry of cooling oil into the motor for cooling, an oil ring sealing joint is provided at the oil outlet end of the third oil hole 103.

[0030] In one specific implementation, the first mounting position 105 is located in the empty area at the lower end of the end cover 1, and is an irregularly shaped sleeve structure extending vertically towards the inside of the motor along the corresponding position of the end cover 1. To facilitate the opening of the oil passage hole 105a, a machining hole 105b is provided on the first mounting position 105, and the machining hole 105b is symmetrically arranged with the oil passage hole 105a. At this time, a drilling device can be inserted into the first mounting position 105 through the machining hole 105 to open the oil passage hole 105a. In practical applications, a plug can be used to seal the machining hole 105b.

[0031] Continuing, as a preferred embodiment, since the oil passage 104 is connected to the oil passage hole 105a, to facilitate the opening of the oil passage 104, the oil passage hole 105a is coaxially arranged with the oil passage 104, and the diameter of the oil passage hole 105a is the same as the diameter of the oil passage 104. In this case, after the oil passage hole 105a is opened, the oil passage 104 can be obtained by continuing to drill inward.

[0032] In a preferred embodiment, to improve the cleanliness of the cooling oil and prevent impurities from entering the motor and affecting its normal operation, the cooling device further includes an oil filter 4. Correspondingly, a second mounting position 106 is embedded in the end cover 1. The second mounting position 106 is used to house the oil filter 4; therefore, its inner peripheral wall shape is consistent with the outer shape of the oil filter 4 and it communicates with the first oil hole 101. During assembly, the oil filter 4 is placed in the second mounting position 106, with its oil inlet end positioned at the junction of the second mounting position 106 and the first oil hole 101, and its oil outlet end connected to the oil inlet end of the oil pump 3.

[0033] In one specific implementation, the second mounting position 106 is located in the empty area at the lower end of the end cover 1, and is an irregularly shaped sleeve structure extending vertically away from the interior of the motor along the corresponding position of the end cover 1. To facilitate the oil circuit connection between the oil filter 4 and the oil pump 3, the first mounting position 105 is internally connected to the second mounting position 106.

[0034] As a preferred embodiment, considering the strength requirements after the oil pump 3, oil filter 4, and oil cooler 2 are integrated on the end cover, a plurality of reinforcing ribs 107 are provided on the end cover 1, and the reinforcing ribs 107 are arranged radially on the end cover 1. This can effectively improve the overall strength of the end cover 1.

[0035] At this time, based on the above-designed cooling device, during the cooling process, the coolant that has been heated after flowing through the motor flows sequentially through the first oil hole 101, oil filter 4, oil pump 3, oil passage 105a, oil passage 104, and second oil hole 102 before entering the oil cooler 2 for cooling. The cooled coolant continues to flow into the motor through the third oil hole 103 for cooling.

[0036] In summary, the cooling device described in this embodiment uses screws and other fasteners to fix the oil cooler, oil pump, and oil filter to the end cover. The oil filter, oil pump, and oil cooler are connected in series within the end cover 1 via an internal oil passage design. This significantly shortens the axial length of the motor and facilitates modification of the end cover 1, making subsequent assembly convenient and enabling rapid installation. Furthermore, the elimination of the need for an external oil passage design simplifies the oil passage structure, eliminates the need for complex machining, saves materials, and reduces overall design and manufacturing costs.

[0037] This embodiment also provides an oil-cooled motor. The cooling device described in this embodiment is applicable to any type of motor. Figure 4 As shown, this is a specific structure of the oil-cooled motor described in this embodiment. In practical applications, it has technical advantages such as small axial space, small size, easy installation, and lower overall processing cost.

[0038] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. An integrated cooling device for oil-cooled motors, characterized in that, include: End cap, and an oil cooler and oil pump integrated on the end cap; The end cap is provided with a first oil hole, a second oil hole, a third oil hole, and an oil passage, and is fitted with a first mounting position; wherein, the inner peripheral wall shape of the first mounting position is consistent with the outer shape of the oil pump, and an oil passage is provided on the first mounting position; The oil pump is embedded in the first mounting position, with its oil outlet end located at the oil passage hole; the oil inlet end of the first oil passage hole is connected to the inside of the motor, and the oil outlet end is connected to the oil inlet end of the oil pump; one end of the oil passage channel is connected to the oil passage hole, and the other end is connected to the second oil hole; the oil cooler is fixed on the side of the end cover away from the inside of the motor, with its oil inlet end connected to the second oil hole and its oil outlet end connected to the third oil hole.

2. The integrated cooling device for oil-cooled motors according to claim 1, characterized in that, The first mounting position has a machining hole, which is symmetrically arranged with the oil passage hole.

3. The integrated cooling device for oil-cooled motors according to claim 2, characterized in that, The oil passage hole is coaxially arranged with the oil passage channel, and the diameter of the oil passage hole is the same as the diameter of the oil passage channel.

4. The integrated cooling device for oil-cooled motors according to claim 1, characterized in that, The first installation position is located in the empty area at the lower end of the end cover, which is an irregularly shaped sleeve structure that extends vertically towards the inside of the motor along the corresponding position of the end cover.

5. The integrated cooling device for oil-cooled motors according to claim 1, characterized in that, The device includes an oil filter, and the end cap is provided with a second mounting position; wherein the inner peripheral wall of the second mounting position has the same shape as the outer shape of the oil filter and is connected to the first oil hole; The oil filter is located in the second mounting position, with its oil inlet end positioned at the junction of the second mounting position and the first oil hole, and its oil outlet end connected to the oil inlet end of the oil pump.

6. The integrated cooling device for oil-cooled motors according to claim 5, characterized in that, The second installation position is located in the empty area at the lower end of the end cover, which is an irregularly shaped sleeve structure that extends vertically away from the inside of the motor along the corresponding position of the end cover.

7. The integrated cooling device for oil-cooled motors according to claim 6, characterized in that, The first mounting position and the second mounting position are internally connected.

8. The integrated cooling device for oil-cooled motors according to claim 1, characterized in that, Includes a sealing ring; the sealing ring is fitted onto the oil inlet end of the first oil hole.

9. The integrated cooling device for oil-cooled motors according to claim 1, characterized in that, The end cap is provided with a number of reinforcing ribs, which are arranged radially on the end cap.

10. An oil-cooled motor, characterized in that, Includes the cooling device as described in any one of claims 1-9.

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