Motor and frequency converter integral circulating water cooling mechanism

Abstract

The utility model discloses a motor and frequency converter integral circulation water cooling mechanism, which comprises a motor and a frequency converter, a circle of outer shell is fixedly sleeved outside a motor shell, a space between the motor and the outer shell is divided into two cooling cavities through a partition plate, the two cooling cavities are respectively provided with a water inlet and a water outlet, and the two cooling cavities are communicated through a notch; the frequency converter is fixed on the outer shell, an IGBT module is arranged in the frequency converter, the IGBT module is directly installed on the outer shell, and a cooling connecting part located below the IGBT module is arranged at the top of the cooling cavity; the water cooling mechanism can fully cover and cool the motor, heat of the frequency converter is fully dissipated from the bottom through an overall cooling flat plate structure, and the cooling effect is good; through the arrangement of the cooling connection part, the heat dissipation surface of the flat plate at the IGBT module can be increased, and the rapid heat dissipation of the main heat source IGBT module of the frequency converter is facilitated. And under the condition that the motor and the frequency converter are kept sealed, the motor and the frequency converter can efficiently dissipate heat.

Description

Technical Field

[0001] The utility model belongs to the technical field of variable frequency motors, and in particular relates to an integral circulating water cooling mechanism for a motor and a frequency converter. Background Art

[0002] A variable frequency motor is a motor that adjusts its output according to the frequency of the input AC power. It controls the output frequency through a frequency converter, thereby adjusting the motor speed.

[0003] When the variable frequency motor is working, the heat generated by the inverter and the motor will seriously affect its stable operation, and heat dissipation and cooling are required. China Utility Model Patent: Variable Frequency Motor (CN201721035283.9), the motor body's rotating shaft provides power to the fan impeller, so that the fan impeller does not need an additional power mechanism, and the controller box can be effectively cooled. While the fan impeller cools the motor body, it can also cool the controller.

[0004] Although the above cooling method can cool the inverter and the motor at the same time, the air cooling method does not allow the corresponding inverter and motor to be sealed, so dust can easily enter and is difficult to clean, affecting long-term stable use; and it cannot be used in environments that require the motor to be sealed, such as in a liquid environment, so the application range is small. Utility Model Content

[0005] The utility model provides an integral circulating water cooling mechanism for a motor and a frequency converter, which can provide sufficient coverage and cooling for the motor, and fully dissipate the heat of the frequency converter from the bottom as a whole through the integral cooling flat plate structure, so as to achieve a good cooling effect; by arranging a cooling connection portion, the heat dissipation surface of the flat plate at the IGBT module can be increased, which is beneficial for rapid heat dissipation of the IGBT module, the main heat source of the frequency converter; while keeping the motor and the frequency converter sealed, the motor and the frequency converter can both dissipate heat efficiently, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a motor and inverter integral circulating water cooling mechanism, comprising a motor and a inverter, wherein the motor housing is fixedly sleeved with an outer shell, and the motor and the outer shell are separated by a partition into two cooling chambers each surrounding the motor housing, the two cooling chambers are respectively provided with a water inlet and a water outlet, the two cooling chambers are connected by a notch, and a baffle with a through hole is provided in the cooling chamber; the inverter is fixed on the outer shell, an IGBT module is provided in the inverter, and the IGBT module is directly mounted on the outer shell, a cooling connection portion is provided on the top of the cooling chamber and is located below the IGBT module, and mounting holes are provided corresponding to the cooling connection portion and the IGBT module, and are connected by screws.

[0007] Preferably, the motor and the frequency converter are sealedly connected.

[0008] Preferably, the top of the outer shell is a flat plate, and the frequency converter is covered thereon.

[0009] Preferably, the flat plate and the cooling connection part are both made of highly thermally conductive materials.

[0010] Preferably, the cooling connection portion penetrates the top of the cooling cavity front to back along its length direction, and the IGBT module is arranged along the length direction of the cooling connection portion.

[0011] Preferably, there are gaps between the cooling connection portion and the partitions on both sides.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The coolant circulating around the motor can fully cover and cool the motor. The overall cooling flat plate structure can fully dissipate the heat of the inverter from the bottom, achieving a good cooling effect.

[0014] 2. By setting the cooling connection part, the heat dissipation surface of the plate at the IGBT module can be increased, which is beneficial to the rapid heat dissipation of the IGBT module, the main heat source of the inverter.

[0015] 3. When the motor and inverter are kept sealed, they can dissipate heat efficiently, avoid dust intrusion and difficulty in cleaning, and achieve long-term efficient and stable operation with a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the motor and frequency converter of the utility model;

[0018] Figure 3 It is a partial rear view structural schematic diagram of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the motor, inverter, IGBT module, and cooling connection part of the utility model;

[0020] Figure 5 This is a schematic diagram of the IGBT module, mounting holes, and flat plate structure of the utility model.

[0021] In the figure: 1. Motor; 2. Inverter; 3. Outer shell; 4. Partition; 5. Cooling chamber; 6. Water inlet; 7. Water outlet; 8. Notch; 9. IGBT module; 10. Cooling connection; 11. Mounting hole; 12. Plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5 The utility model provides an integral circulating water cooling mechanism for a motor and a frequency converter, comprising a motor 1 and a frequency converter 2. The motor 1 is fixedly sleeved with a circle of outer shell 3 outside the shell, and the motor 1 and the outer shell 3 are separated into two cooling chambers 5 each surrounding the shell of the motor 1 by a partition 4. The two cooling chambers 5 are respectively provided with a water inlet 6 and a water outlet 7. The two cooling chambers 5 are connected by a notch 8. A baffle with a through hole is provided in the cooling chamber 5. The baffle is provided to facilitate the diversion of the coolant through the through hole, and further facilitates the uniform flow of the coolant; the frequency converter 2 is fixed on the outer shell 3, and an IGBT module 9 is provided in the frequency converter 2. The IGBT module 9 is directly mounted on the outer shell 3. A cooling connection part 10 located below the IGBT module 9 is provided on the top of the cooling chamber 5, and the cooling connection part 10 and the IGBT module 9 is provided with a mounting hole 11 corresponding to the partition plate 4, and is connected by screws; when working, the coolant enters the cooling cavity 5 between the corresponding partition plates 4 from the water inlet 6, and after entering, the coolant will circle the motor 1 to cover it, and enter the adjacent cooling cavity 5 through the notch 8, and then circle the motor 1 again to give the motor 1 a full coverage and cooling, and then flow out from the water outlet 7 for circulating cooling; at the same time, when the coolant enters the upper part of the cooling cavity 5, it will fully contact the upper part of the outer shell 3 to cool it, and fully dissipate the heat of the inverter 2 as a whole from the bottom, and the cooling effect is good; as common sense, the main heat source of the inverter 2 is the IGBT module 9. By setting the cooling connection part 10, the heat dissipation surface of the upper part of the outer shell 3 at the IGBT module 9 can be increased, which is conducive to the rapid heat dissipation of the IGBT module 9; thereby keeping the motor 1 and the inverter 2 sealed, the motor 1 and the inverter 2 can still dissipate heat efficiently, and achieve long-term efficient and stable operation.

[0024] Specifically, the motor 1 and the frequency converter 2 are sealed and connected. In this embodiment, the sealed environment can be satisfied and the problems of dust easily entering and being difficult to clean can be avoided.

[0025] Specifically, the top of the outer shell 3 is a flat plate 12, and the inverter 2 is covered and installed thereon; in this embodiment, the inverter 2 is covered and installed on the flat plate 12, and the structure of the flat plate can fully dissipate the heat of the inverter 2 as a whole from the bottom, and the cooling effect is good.

[0026] Specifically, the plate 12 and the cooling connection part 10 are both made of highly heat-conductive materials; in this embodiment, the motor 1 and the inverter 2 are facilitated to dissipate heat through the plate 12 and the cooling connection part 10 and the coolant.

[0027] Specifically, the cooling connection part 10 passes through the top of the cooling cavity 5 front to back along its length direction, and the IGBT module 9 is arranged along the length direction of the cooling connection part 10; in this embodiment, the area directly corresponding to the cooling connection part 10 and the IGBT module 9 is increased, which is beneficial to heat dissipation.

[0028] Specifically, there are gaps between the cooling connection part 10 and the partitions 4 on both sides; in this embodiment, the coolant can flow from both sides of the cooling connection part 10 and fully contact the cooling connection part 10, which is beneficial to its heat dissipation.

[0029] In order to facilitate understanding of the above technical solution of the present invention, the working principle or operation method of the present invention in the actual process is described in detail below.

[0030] Working principle: During operation, the coolant enters the cooling cavity 5 between the corresponding partitions 4 from the water inlet 6. After entering, the coolant will circle around the motor 1 to cover it, and enter the adjacent cooling cavity 5 through the gap 8, and then circle around the motor 1 again to fully cover and cool the motor 1, and then flow out from the water outlet 7 for cyclic cooling; at the same time, when the coolant enters the upper part of the cooling cavity 5, it will fully contact the flat plate 12 to cool the entire flat plate 12, and the inverter 2 is covered and installed on the flat plate 12, and the flat plate 12 is made of a strong thermal conductive material. The structure of the flat plate will fully dissipate the heat of the inverter 2 as a whole from the bottom, and the cooling effect is good; as common sense, the main heat source of the inverter 2 is the IGBT module 9. By setting the cooling connection part 10, the heat dissipation surface of the flat plate 12 at the IGBT module 9 can be increased, which is conducive to the rapid heat dissipation of the IGBT module 9; thereby, while keeping the motor 1 and the inverter 2 sealed, the motor 1 and the inverter 2 can still dissipate heat efficiently, and achieve long-term efficient and stable operation.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A motor and inverter integrated circulating water cooling mechanism, comprising a motor (1) and an inverter (2), characterized in that: An outer shell (3) is fixedly sleeved outside the shell of the motor (1); the motor (1) and the outer shell (3) are separated by a partition (4) into two cooling chambers (5) each surrounding the shell of the motor (1); the two cooling chambers (5) are respectively provided with a water inlet (6) and a water outlet (7); the two cooling chambers (5) are connected by a notch (8); a baffle with a through hole is provided in the cooling chamber (5); the frequency converter (2) is fixed on the outer shell (3); an IGBT module (9) is provided in the frequency converter (2); the IGBT module (9) is directly mounted on the outer shell (3); a cooling connection portion (10) located below the IGBT module (9) is provided at the top of the cooling chamber (5); the cooling connection portion (10) and the IGBT module (9) are provided with mounting holes (11) corresponding to each other and are connected by screws.

2. The motor and inverter integrated circulating water cooling mechanism according to claim 1 is characterized in that: The motor (1) and the frequency converter (2) are sealedly connected.

3. The motor and inverter integrated circulating water cooling mechanism according to claim 1 is characterized in that: The top of the outer shell (3) is a flat plate (12), on which the frequency converter (2) is mounted.

4. The motor and inverter integrated circulating water cooling mechanism according to claim 3 is characterized in that: The flat plate (12) and the cooling connection part (10) are both made of highly heat-conductive materials.

5. The motor and inverter integrated circulating water cooling mechanism according to claim 1 is characterized in that: The cooling connection portion (10) penetrates the top of the cooling cavity (5) from front to back along its length direction, and the IGBT module (9) is arranged along the length direction of the cooling connection portion (10).

6. The motor and inverter integrated circulating water cooling mechanism according to claim 1 is characterized in that: There are gaps between the cooling connection portion (10) and the partitions (4) on both sides.

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