Water cooling and air cooling combined assembly type motor cooling device

Abstract

The utility model discloses a water cooling and air cooling combined assembly type motor cooling device, which relates to the technical field of motor equipment and comprises a water jacket arranged on the outer side of a stator, the water jacket comprises a base layer and an outer layer, a plurality of water retaining strips are arranged between the base layer and the outer layer, and the water retaining strips are matched with the base layer and the outer layer to form a plurality of flow channels for circulating cooling fluid media. An outer cover is arranged on the outer side of the water jacket, the outer cover and the outer layer form an air jacket, a plurality of air partition strips are arranged between the outer cover and the outer layer and matched with the outer cover and the outer layer to form a plurality of air channels, and an air inlet is formed in one end of the air jacket. The problems that in the prior art, the motor cooling effect is poor, a cooling device is difficult to disassemble, assemble and maintain, and the manufacturing cost of the cooling device is high are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor equipment, in particular to an assembled motor cooling device combining water cooling and air cooling. Background Art

[0002] At present, the motors using water jacket cooling need to strengthen their internal air circulation so that the hot air can fully contact with the cooling water for cooling, thereby reducing the internal temperature of the motor and improving the motor life and operating reliability.

[0003] In order to improve the cooling effect, the existing technology also proposed a "water jacket + air jacket" structure motor base to meet user needs. However, the current "water jacket + air jacket" structure cannot be formed as a whole through a mold. For motors with larger sizes and smaller batches, welding is the preferred choice, but such a structure has problems such as the water jacket and the air jacket need to be welded, there are many welds, many problem points, and long working hours.

[0004] For example, on April 14, 2023, a patent application with application number "202211671089.5" and titled "A fully enclosed permanent magnet motor casing water-cooled internal circulation air cooling structure" was published, which proposed the use of steel pipes to form air ducts. However, this method has the problem that both the water jacket and the air jacket need to be welded, there are many welds, many problem points, and long working hours. Once problems are found in the water jacket welding, the inspection and handling are complicated.

[0005] Therefore, the existing structure still needs to be optimized to reduce the manufacturing difficulty of the air-cooling structure for cooling the motor base, facilitate subsequent inspection and maintenance of the equipment, and ensure the cooling effect of the motor. Utility Model Content

[0006] The utility model aims to solve the problems in the prior art that the cooling effect of the motor is poor, the cooling device is difficult to disassemble and maintain, and the manufacturing cost of the cooling device is high.

[0007] In order to achieve the above-mentioned invention object, the technical solution of the utility model is as follows:

[0008] An assembled motor cooling device combining water cooling and air cooling comprises a water jacket arranged on the outside of a stator core, the water jacket comprising a base layer and an outer layer, a plurality of water retaining strips are arranged between the base layer and the outer layer, the water retaining strips cooperate with the base layer and the outer layer to form a plurality of flow channels for circulating cooling fluid medium, an outer cover is arranged on the outside of the water jacket, the outer cover and the outer layer form a wind jacket, a plurality of wind blocking strips are arranged between the outer cover and the outer layer, the wind blocking strips cooperate with the outer cover and the outer layer to form a plurality of wind ducts, an air inlet is arranged at one end of the air jacket, and an air outlet is arranged at the end away from the air inlet.

[0009] Furthermore, the outer cover is a full-circular structure or a petal-type structure.

[0010] Furthermore, for the outer cover with a full-circle structure, the air jacket and the water jacket are axially assembled and pressed by bolts; for the outer cover with a petal structure, the air jacket and the water jacket are radially assembled and pressed by bolts.

[0011] Furthermore, the thickness of the outer cover is 1-20 mm.

[0012] Furthermore, the water retaining strips are arranged axially or spirally, and cooperate with the base layer and the outer layer to form a plurality of axial flow channels or spiral flow channels.

[0013] Furthermore, the wind-shielding strips are arranged axially or in a spiral shape or in a V shape or in an S shape, and the wind-shielding strips cooperate with the outer cover and the outer layer to form a plurality of axially or in a spiral shape or in a V shape or in an S shape air flow passages.

[0014] Furthermore, heat dissipation ribs are arranged on the outer side of the outer cover.

[0015] Furthermore, no windproof strips are arranged at the wire outlet position of the junction box on the device and the water inlet and outlet positions of the water jacket.

[0016] Furthermore, the wind shield strip is made of the same material as the outer layer of the water jacket, or is made of a flexible non-metallic material with a heat resistance level not lower than the tolerable temperature of the casing.

[0017] Beneficial effects of the utility model:

[0018] 1. In the utility model, the water jacket and the air jacket structure are used to form an assembled motor cooling device that combines water cooling and air cooling. The motor cooled by the water jacket strengthens the internal air circulation, so that the hot air and the cooling water are fully contacted for cooling. Thereby reducing the internal temperature of the motor, improving the life and operating reliability of the motor. In addition, the contact area between the air path and the water jacket surface in this solution can be as large as the effective surface area of ​​the water jacket, making full use of the cooling water to cool the hot air inside the motor.

[0019] Second, in the utility model, the outer cover can be set as a full-circle structure or a petal structure according to the use environment of the equipment, that is, according to the specific structure of the motor (such as the arrangement of the junction box, the opening of the functional holes, etc.), the wind cover can be designed as a full-circle structure or a petal structure, and the wind jacket is designed as a detachable structure. After the base is manufactured, if a problem is found in the water jacket, it is convenient to check and deal with it. Further, according to the structural design of the outer cover, the preferred outer cover assembly method is determined.

[0020] 3. In the present invention, the thickness of the outer cover is determined according to factors such as the choice of material, the specifications of the equipment, the installation environment of the equipment, etc., and is preferably 1-20 mm.

[0021] Fourth, in the utility model, the water retaining strips are arranged axially or spirally, and the water retaining strips cooperate with the base layer and the outer layer to form a plurality of axial flow channels or spiral flow channels to fully cool the motor.

[0022] 5. In the utility model, the windbreak strips can be made of different materials according to different needs, made into different shapes and fixed on the outer surface of the outer layer or on the inner side of the outer cover. Preferably, the windbreak strips are arranged axially or in a spiral or V-shape or S-shape, and the windbreak strips cooperate with the outer cover and the outer layer to form a number of axial or spiral or V-shape or S-shape air flow ducts. When the windbreak strips are arranged axially, they can be made of the same material as the outer layer of the water jacket (carbon steel, aluminum alloy), or made of a flexible non-metallic material with a heat resistance grade not lower than the withstand temperature of the casing, or a combination of carbon steel, aluminum alloy and flexible non-metallic material. When the windbreak strips are made of flexible non-metallic materials, they can be arranged in a spiral or V-shape or S-shape to enhance air disturbance and improve heat dissipation capacity.

[0023] 6. In the present invention, the heat dissipation ribs provided on the outer cover can dissipate heat only by natural convection, or can be connected to an external fan or an independent fan coaxial with the motor to generate airflow to blow over the heat dissipation ribs for forced convection heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the assembled motor cooling device in the utility model.

[0025] Figure 2 yes Figure 1 Enlarged view of part A.

[0026] Figure 3 It is a structural diagram of the wind sleeve.

[0027] Figure 4 It is a structural schematic diagram of one of the implementation methods of the wind-proof strip.

[0028] Figure 5 It is a diagram showing the expanded structure of the outer cover.

[0029] Figure 6 It is an expanded view of one embodiment of the air sleeve after removing the outer cover.

[0030] Figure 7 It is a schematic diagram of the structure of an assembled motor cooling device with a split-flap cover (two-flap type).

[0031] Figure 8 It is a structural schematic diagram of an assembled motor cooling device with a split-flap cover (four-flap type).

[0032] Fig. 9 It is a diagram showing the assembly structure of the full-circle outer cover.

[0033] Fig.10It is a schematic diagram of the structure in which wind-shielding strips are arranged in an S shape on the outer cover.

[0034] Fig.11 It is a schematic diagram of the structure in which wind-shielding strips are arranged axially on the outer cover.

[0035] Among them, 1. stator core; 2. water jacket; 3. outer cover; 4. air jacket; 5. sealing gasket; 6. junction box support; 7. bolts; 8. heat dissipation ribs; 9. screw holes; 10. junction box outlet holes; 11. matching cylindrical surface; 2.1. base layer; 2.2. outer layer; 2.3. water retaining strip; 2.4. flow channel; 2.5. water inlet; 2.6. water outlet; 4.1. wind shielding strip; 4.2. air duct; 4.3. air inlet; 4.4. exhaust outlet. DETAILED DESCRIPTION

[0036] The present invention is further described in detail below in conjunction with the embodiments, but the implementation manner of the present invention is not limited thereto.

[0037] Example 1

[0038] An assembled motor cooling device combining water cooling and air cooling, comprising a water jacket 2 arranged outside a stator core 1, Figure 1-3 The water jacket 2 includes a base layer 2.1 and an outer layer 2.2, a plurality of water retaining strips 2.3 are arranged between the base layer 2.1 and the outer layer 2.2, the water retaining strips 2.3 cooperate with the base layer 2.1 and the outer layer 2.2 to form a plurality of flow channels 2.4 for circulating cooling fluid medium, an outer cover 3 is arranged on the outside of the water jacket 2, the outer cover 3 and the outer layer 2.2 form a wind jacket 4, a plurality of wind blocking strips 4.1 are arranged between the outer cover 3 and the outer layer 2.2, the wind blocking strips 4.1 cooperate with the outer cover 3 and the outer layer 2.2 to form a plurality of wind channels 4.2, an air inlet 4.3 is arranged at one end of the air jacket 4, and an air outlet 4.4 is arranged at the end away from the air inlet 4.3.

[0039] In this embodiment, the base layer is both the base layer 2.1 of the water jacket 2 and the machine base wall. In this solution, the water jacket 2 and the air jacket 3 are part of the machine base, and the inner circle of the machine base wall and the outer circle of the stator core 1 are matched through the matching cylindrical surface 11.

[0040] In this embodiment, the water jacket 2 is passed through a cooling fluid medium to cool the motor, and the air jacket 4 outside the water jacket 2 can strengthen the internal air circulation, so that the hot air is fully contacted with the cooling water for cooling. This reduces the internal temperature of the motor and improves the life and operating reliability of the motor. In addition, the contact area between the air path and the surface of the water jacket 2 in this solution can be as large as the effective surface area of ​​the water jacket 2, so that the cooling water is fully utilized to cool the hot air inside the motor.

[0041] Preferably, the thickness of the outer cover 3 is 1-20 mm.

[0042] Preferably, the outer side of the outer cover 3 is provided with heat dissipation ribs 8, Figure 1 Or when the water retaining strip 2.3 is required to also serve as a reinforcing rib, the water retaining strip 2.3 can be fixed by continuous welding or intermittent welding; if not required, the water retaining strip 2.3 can be fixed to the outer layer 2.2 and the outer cover 3 by spot welding or bolts 7.

[0043] Example 2

[0044] This embodiment is a further optimization of the embodiment 1, the difference is that the outer cover 3 is a full circle structure, refer to Figure 1 .

[0045] In this embodiment, for the outer cover 3 of the full-circular structure, the air jacket 4 and the water jacket 2 are axially assembled and pressed by bolts 7, as shown in FIG. Fig. 9 .

[0046] Example 3

[0047] This embodiment is a further optimization of the embodiment 1, the difference being that the outer cover 3 is a petal-type structure. Figure 7 or 8. Figure 7 It is a structural schematic diagram of an assembled motor cooling device with a two-petal outer cover 3; Figure 8 It is a structural schematic diagram of an assembled motor cooling device with a four-petal outer cover 3.

[0048] In this embodiment, for the outer cover 3 of the petal-type structure, the air jacket 4 and the water jacket 2 are radially assembled and pressed by bolts 7 .

[0049] Example 4

[0050] Compared with embodiments 1-3, the present embodiment is different in that the water retaining strips 2.3 are arranged axially or spirally, and the water retaining strips 2.3 cooperate with the base layer 2.1 and the outer layer 2.2 to form a plurality of axial flow channels 2.4 or spiral flow channels 2.4.

[0051] Example 5

[0052] Compared with embodiments 1-4, the present embodiment is different in that the windbreak strips 4.1 are arranged axially or in a spiral or V-shape or S-shape, and the windbreak strips 4.1 cooperate with the outer cover 3 and the outer layer 2.2 to form a plurality of axially or in a spiral or V-shape or S-shape air flow passages 4.2. Fig.10 It is a schematic diagram of the structure in which the wind-shielding strips 4.1 are arranged in an S shape on the outer cover 3; Fig.11 It is a schematic diagram of the structure in which the wind-shielding strips 4.1 are arranged axially on the outer cover 3.

[0053] Regarding the design of the number of windbreak strips 4.1: when the water jacket 2 is a spiral water jacket 2, the number of windbreak strips 4.1 can be set arbitrarily; when the water jacket 2 is an axial water jacket 2, the number of windbreak strips 4.1 should be the same as the water retaining strips 2.3, and the number of air ducts 4.2 formed should not exceed 3 times the number of water ducts, and the minimum should not be less than 4.

[0054] Preferably, the windbreak strip 4.1 is not arranged at the junction box outlet position (such as the junction box support 6, the junction box outlet hole) on the device and the water inlet 2.5 and the water outlet 2.6 of the water jacket 2, and the windbreak strip 4.1 is not arranged. Figure 5 , 6 、7.

[0055] Preferably, the wind shield strip 4.1 is made of the same material as the outer layer 2.2 of the water jacket 2, or is made of a flexible non-metallic material with a heat resistance level not lower than the tolerable temperature of the casing.

[0056] Example 6

[0057] To facilitate the public to understand the present solution, this embodiment takes an assembled motor cooling device structure that combines water cooling and air cooling as an example to further illustrate the present solution.

[0058] Specifically, refer to Figure 1-6 , 11, comprising a water jacket 2 arranged on the outside of the stator core 1, the water jacket 2 comprising a base layer 2.1 and an outer layer 2.2, a plurality of water retaining strips 2.3 are arranged between the base layer 2.1 and the outer layer 2.2, the water retaining strips 2.3 cooperate with the base layer 2.1 and the outer layer 2.2 to form a plurality of flow channels 2.4 for circulating cooling fluid medium, an outer cover 3 is arranged on the outside of the water jacket 2, the outer cover 3 and the outer layer 2.2 form a wind jacket 4, a plurality of wind blocking strips 4.1 are arranged between the outer cover 3 and the outer layer 2.2, the wind blocking strips 4.1 cooperate with the outer cover 3 and the outer layer 2.2 to form a plurality of wind ducts 4.2, an air inlet 4.3 is arranged at one end of the wind jacket 4 to realize internal wind circulation, reference Fig. 9 An exhaust port 4.4 is provided at the end away from the air inlet 4.3.

[0059] In this embodiment, the outer cover 3 is a full-circular structure, and the outer cover 3 is fixedly mounted on the water jacket 2. The air jacket 4 is detachably connected to the water jacket 2, and the air jacket 4 and the water jacket 2 are axially assembled and pressed by bolts 7.

[0060] In this embodiment, holes are provided at both ends of the base according to specific needs. The holes can be round holes, oblong holes or rectangular holes. The axial positions of the holes at the same end can be aligned or staggered. No holes are provided within the position range that the motor structure needs to occupy (such as the junction box support 6, the junction box outlet 10, the water inlet 2.5, the water outlet 2.6, etc.).

[0061] In this embodiment, the thickness of the outer cover 3 is 5 mm.

[0062] In this embodiment, the water retaining strips 2.3 are arranged axially, and the water retaining strips 2.3 cooperate with the base layer 2.1 and the outer layer 2.2 to form a plurality of axial flow channels 2.4.

[0063] In this embodiment, the wind-blocking strips 4.1 are arranged along the axial direction, and can be arranged in a spiral, V-shaped or S-shaped manner according to the requirements. The wind-blocking strips 4.1 cooperate with the outer cover 3 and the outer layer 2.2 to form a plurality of axial air ducts 4.2.

[0064] Design of the number of windbreak strips 4.1: The number of windbreak strips 4.1 should be the same as that of water retaining strips 2.3, and the number of air ducts 4.2 formed should not exceed 3 times the number of water ducts, and the minimum should not be less than 4.

[0065] In this embodiment, the joint is fixed to the outer layer 2.2 of the water jacket 2 and the outer cover 3 of the wind jacket 4 by bolts 7.

[0066] In this embodiment, heat dissipation ribs 8 are disposed on the outer side of the outer cover 3 .

[0067] In this embodiment, the windbreak strip 4.1 is not arranged at the outlet position of the junction box on the device and the water inlet 2.5 and the water outlet 2.6 of the water jacket 2. The windbreak strip 4.1 is preferably made of the same material as the outer layer 2.2 of the water jacket 2 (such as carbon steel, aluminum alloy, etc.), or can be made of a flexible non-metallic material with a heat resistance level not lower than the withstand temperature of the casing, especially a sealing structure such as a rubber strip with a rectangular or circular cross-section.

[0068] In this embodiment, when the windproof strip 4.1 is fixed on the water jacket 2, the outer cover 3 is a complete circle, axially inserted, and radially fixed; the windproof strip 4.1 is on the water jacket 2, and the outer cover 3 is a complete circle, axially inserted, and axially fixed.

Claims

1. An assembled motor cooling device combining water cooling and air cooling, characterized in that: The invention comprises a water jacket (2) arranged on the outside of a stator core (1), the water jacket (2) comprising a base layer (2.1) and an outer layer (2.2), a plurality of water retaining strips (2.3) being arranged between the base layer (2.1) and the outer layer (2.2), the water retaining strips (2.3) cooperating with the base layer (2.1) and the outer layer (2.2) to form a plurality of flow channels (2.4) for circulating a cooling fluid medium, an outer cover (3) being arranged on the outside of the water jacket (2), the outer cover (3) and the outer layer (2.2) forming a wind jacket (4), a plurality of wind blocking strips (4.1) being arranged between the outer cover (3) and the outer layer (2.2), the wind blocking strips (4.1) cooperating with the outer cover (3) and the outer layer (2.2) to form a plurality of wind channels (4.2), and an air inlet (4.3) being arranged at one end of the wind jacket (4); and an air outlet (4.4) being arranged at the end away from the air inlet (4.3).

2. The assembled motor cooling device combining water cooling and air cooling according to claim 1 is characterized in that: The outer cover (3) is a full-circular structure or a petal-type structure.

3. The assembled motor cooling device combining water cooling and air cooling according to claim 2 is characterized in that: For an outer cover (3) with a full-circle structure, the air jacket (4) and the water jacket (2) are axially assembled and pressed by bolts (7); for an outer cover (3) with a petal structure, the air jacket (4) and the water jacket (2) are radially assembled and pressed by bolts (7).

4. The assembled motor cooling device combining water cooling and air cooling according to claim 2 is characterized in that: The thickness of the outer cover (3) is 1-20 mm.

5. The assembled motor cooling device combining water cooling and air cooling according to claim 1 is characterized in that: The water retaining strips (2.3) are arranged axially or spirally, and the water retaining strips (2.3) cooperate with the base layer (2.1) and the outer layer (2.2) to form a plurality of axial flow channels (2.4) or spiral flow channels (2.4).

6. The assembled motor cooling device combining water cooling and air cooling according to claim 1 is characterized in that: The wind-blocking strips (4.1) are arranged axially or in a spiral shape or in a V shape or in an S shape, and the wind-blocking strips (4.1) cooperate with the outer cover (3) and the outer layer (2.2) to form a plurality of axially or in a spiral shape or in a V shape or in an S shape.

7. The assembled motor cooling device combining water cooling and air cooling according to claim 1 is characterized in that: Heat dissipation ribs (8) are provided on the outer side of the outer cover (3).

8. The assembled motor cooling device combining water cooling and air cooling according to claim 1 is characterized in that: No windproof strips (4.1) are arranged at the wire outlet position of the junction box on the device and the water inlet (2.5) and the water outlet (2.6) of the water jacket (2).

9. The assembled motor cooling device combining water cooling and air cooling according to claim 1, characterized in that: The windproof strip (4.1) is made of the same material as the outer layer (2.2) of the water jacket (2), or is made of a flexible non-metallic material with a heat resistance level not lower than the tolerable temperature of the casing.

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