Capacitor box and motor

Abstract

The utility model provides a kind of capacitor box and motor, capacitor box is applied to motor, the capacitor box is fixed on the shell of the motor, capacitor is used to accommodate in the capacitor box, the capacitor box further includes cover body and the sealing gasket between the cover body and the shell, the outer circumferential side of the sealing gasket is provided with fireproof sealant layer, the fireproof sealant layer, to be able to solve the technical problem of insufficient sealing between capacitor box and the shell of motor in prior art.

Description

Technical Field

[0001] This utility model belongs to the field of motor technology, specifically relating to a capacitor box and a motor. Background Technology

[0002] With the increasing intelligence and integration of motors and their control systems, there is a growing demand for more secure and reliable mounting of motor components. Among these, the stable and reliable mounting of capacitors, as crucial components in motor control, is particularly important. Traditional open-type metal capacitor boxes suffer from low protection levels and are prone to resonance noise, making them unsuitable for the miniaturization, sealing requirements, and long-term stable operation demands of modern home appliances. To improve the sealing performance of the capacitor box, an adhesive layer is often placed between the capacitor box and the motor. However, this sealing method still suffers from the problem of adhesive layer aging and subsequent seal degradation.

[0003] How to slow down the aging of the adhesive layer and thus improve the sealing between the capacitor box and the motor is a technical problem that urgently needs to be solved. Utility Model Content

[0004] Therefore, this utility model provides a capacitor box and a motor, which can solve the technical problem of insufficient sealing between the outer shell of the capacitor box and the motor in the prior art.

[0005] On one hand, this utility model provides a capacitor box for use on a motor. The capacitor box is fixed on the outer shell of the motor and is used to house a capacitor. The capacitor box also includes a cover and a sealing gasket disposed between the cover and the outer shell. A fireproof sealant layer is provided on the outer periphery of the sealing gasket.

[0006] In some embodiments, a capacitor mounting position is provided inside the cover, and a heat insulation pad is provided at the mounting position, with the heat insulation pad disposed between the capacitor and the mounting position.

[0007] In some embodiments, the mounting position is provided with a fixing groove, the heat insulation pad is inserted into the fixing groove, and a portion of the capacitor can be disposed in the fixing groove.

[0008] In some embodiments, the sealing gasket is elastic, and / or the sealing gasket has a thermal insulation function.

[0009] On the other hand, this utility model also provides a motor, including an end cover and the capacitor box, wherein the capacitor box is fixed on the end cover.

[0010] In some embodiments, the end cap is provided with a mounting position, the mounting position including a mounting groove, and the capacitor box is disposed within the mounting groove.

[0011] In some embodiments, the fire-retardant sealant layer fills the mounting groove.

[0012] In some embodiments, there are two end caps, each with an opening provided with a connecting flange, and the two end caps are connected together via the connecting flanges to form the outer shell; the cover is provided with a relief groove, the connecting flange is inserted into the relief groove, and a sealing layer is provided between the connecting flange and the relief groove.

[0013] In some embodiments, a fixing plate is provided on the cover, the fixing plate is provided with a connecting hole, and the fixing plate is fitted with the connecting flange; the motor includes bolts and nuts, the bolts pass through the two connecting flanges and the connecting hole and are locked by the nuts.

[0014] In some embodiments, the end cap is provided with a through hole for passing a wire, and the cover body covers the through hole.

[0015] This invention provides a sealing gasket between the capacitor box housing and the motor housing, and a fire-retardant sealing adhesive layer around the sealing gasket to achieve a seal between the housing and the housing, thereby improving the sealing performance between the capacitor box and the housing. Attached Figure Description

[0016] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0017] Figure 1 This is an exploded view of the motor, capacitor, and capacitor box according to an embodiment of this utility model;

[0018] Figure 2 This is an embodiment of the present utility model. Figure 1 Another perspective illustration;

[0019] Figure 3 This is a schematic diagram of the motor, capacitor, and capacitor box assembled together according to an embodiment of the present invention;

[0020] Figure 4 This is an embodiment of the present utility model. Figure 3 A schematic diagram after removing the motor bracket;

[0021] Figure 5 This is a first-view schematic diagram of the capacitor box according to an embodiment of the present invention;

[0022] Figure 6 This is a second-view schematic diagram of the capacitor box according to an embodiment of the present invention;

[0023] Figure 7 This is a third-view schematic diagram of the capacitor box according to an embodiment of the present invention;

[0024] Figure 8 This is a fourth-view schematic diagram of the capacitor box according to an embodiment of the present invention.

[0025] The attached figures are labeled as follows:

[0026] 1. Motor; 2. Capacitor box; 3. Capacitor; 4. Housing; 5. End cap; 6. Sealing gasket; 7. Fixing groove; 8. Heat insulation pad; 9. Cover; 10. Fixing plate; 11. Connecting hole; 12. Through hole. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0028] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0029] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0030] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0031] See also Figure 1-8 As shown, this utility model provides a capacitor box 2 applied to a motor 1. The capacitor box 2 is fixed to the outer shell 4 of the motor 1. The capacitor box 2 is used to accommodate a capacitor 3. The capacitor box 2 also includes a cover 9 and a sealing gasket 6 disposed between the cover 9 and the outer shell 4. A fireproof sealant layer is disposed on the outer periphery of the sealing gasket 6.

[0032] By setting a sealing gasket 6 between the cover 9 and the outer shell 4, and setting a fireproof sealing layer on the outer periphery of the sealing gasket 6, on the one hand, the fireproof sealing cross improves the sealing performance between the cover 9 and the outer shell 4, and on the other hand, the protective sealing layer protects the sealing gasket 6, slows down the aging of the sealing gasket 6, and thus improves the sealing performance between the cover 9 and the outer shell 4.

[0033] The fireproof sealant layer effectively blocks external combustibles from contacting the internal capacitor 3, preventing explosions caused by short circuits, overheating, or gas accumulation, thus improving the safety of motor 1 in flammable and explosive environments (chemical plants, mines, etc.) and expanding the application scenarios of motor 1.

[0034] Figure 7 and Figure 8 This is a schematic diagram of the capacitor cell from different perspectives.

[0035] Preferred, such as Figure 2 and Figure 6As shown, the cover 9 has a mounting position for a capacitor 3 inside, and a heat insulation pad 8 is provided at the mounting position, with the heat insulation pad 8 positioned between the capacitor 3 and the mounting position.

[0036] By setting an installation position and a heat insulation pad 8 inside the cover 9, the heat transferred from the motor 1 to the capacitor 3 through the cover 9 is greatly reduced, which is beneficial to the stable operation of the capacitor 3.

[0037] Preferred, such as Figure 2 and Figure 6 As shown, the mounting position is provided with a fixing groove 7, the heat insulation pad 8 is inserted into the fixing groove 7, and a part of the capacitor 3 can be placed in the fixing groove 7.

[0038] By setting the fixing slot 7, the position of capacitor 3 within the housing 9 is fixed, which is beneficial for the stable operation of capacitor 3. The fixed position also facilitates the automation of capacitor 3 assembly and improves production efficiency.

[0039] Furthermore, the heat insulation pad 8 covers the inner wall surface of the cover 9.

[0040] The mounting slot 7 can be precisely adapted to the specifications of the capacitor 3 used in the matching motor 1. Through modular design, it achieves flexible adaptation to capacitors 3 of different sizes. This design not only ensures that the capacitor 3 fits tightly with the mounting slot 7 after installation, avoiding displacement or loosening caused by vibration or external force, but also significantly improves the stability of the capacitor 3 during operation, fundamentally eliminating safety hazards such as short circuits and pin breakage caused by shaking. At the same time, the structural optimization of the mounting slot 7 also greatly reduces the complexity of production and installation. Through standardized installation interfaces and a rapid positioning mechanism, the installation efficiency of the capacitor 3 is increased by more than 30%, reducing errors and time costs associated with manual operation.

[0041] Furthermore, a heat insulation part for capacitor 3 is also provided in the fixed groove 7. The heat insulation part is installed and fixed in the adjustable fixed groove 7 through the glue injection process. Considering that the operating temperature of the matching motor 1 is basically no more than 150 degrees Celsius, the material can be low-cost silicone rubber or aluminum silicate fiber, which effectively reduces the heat transfer generated by the operation of motor 1 and extends the service life of capacitor 3.

[0042] Preferably, the sealing gasket 6 is elastic, and / or the sealing gasket 6 has a heat insulation function.

[0043] The sealing gasket 6 is elastic, which can reduce vibration of the capacitor 3, and the vibration generated by the rotor rotation of the motor 1 has little impact on the capacitor 3. This reduces the noise generated by the resonance between the motor 1 and the metal capacitor box 2, and improves the overall sound quality of the machine.

[0044] The sealing gasket 6 is made of elastic materials such as silicone or neoprene rubber. This material, when compressed and deformed, achieves a tight fit, forming a fully enclosed structure. Its elastic properties also absorb vibration energy from the motor 1, reducing resonance noise between the capacitor box 2 and the motor 1 end cover 5, thus improving overall operational stability.

[0045] The sealing gasket 6 has a heat insulation function, which reduces the amount of heat generated by the main body of the motor 1 that is conducted to the capacitor 3, thereby further improving the stability of the capacitor 3.

[0046] The capacitor box 2 forms a relatively sealed protective shell to protect the capacitor 3.

[0047] Furthermore, capacitor box 2 is made of metal, such as cold-rolled steel sheet or high-strength stainless steel, to meet the performance requirements and environmental adaptability requirements under different working conditions. Cold-rolled steel sheet is suitable for conventional industrial scenarios, balancing cost and processability; high-strength stainless steel is suitable for environments with high corrosion, high temperature, or high protection requirements, improving structural durability and environmental adaptability. At the same time, the rigid design of the metal material enhances impact resistance, ensuring the stable operation of capacitor box 2 under complex working conditions.

[0048] This utility model also provides a motor, such as Figure 1-4 As shown, it includes an end cap 5 and the capacitor box 2, with the capacitor box 2 fixed on the end cap 5.

[0049] The motor 1 has good overall sealing performance, runs smoothly, has low vibration and low noise, which improves the service life of the motor 1 and the user experience.

[0050] Preferably, the end cover 5 is provided with a mounting position, the mounting position includes a mounting groove, and the capacitor box 2 is covered in the mounting groove.

[0051] By setting the mounting position, the capacitor box 2 can be installed more precisely on the motor 1, which is beneficial for automated production; setting the mounting slot also improves the firmness of the capacitor 3 on the motor 1.

[0052] The sealing gasket 6 is set in the mounting groove and can be fixed in the groove by the glue injection process. The thickness and elastic parameters of the sealing gasket 6 are optimized according to the vibration frequency of the motor 1 and the sealing requirements to ensure that it can effectively absorb vibration energy and form a fully enclosed structure after tightening.

[0053] The mounting slot is also equipped with a heat insulation layer, which effectively reduces the heat transfer generated by the motor 1 during operation and extends the service life of the capacitor 3.

[0054] Specifically, the end cap 5 is pre-machined with a mounting position (more specifically, a mounting surface) to match the capacitor box 2, and a mounting groove is provided in the contact area to accommodate the heat insulation layer and the capacitor box 2. The connection structure between the end cap 5 and the capacitor box 2 is precision machined to ensure no gaps after assembly. The modular design of the fixing slot 7 is completed simultaneously during the production stage of the motor 1. The capacitor 3 is installed in the appropriately sized fixing slot 7 to avoid the risk of shaking caused by vibration during operation. After the entire machine is assembled, the motor 1 and the capacitor box 2 undergo systematic sealing tests, including splash-proof tests (simulating rainwater erosion) and solid foreign object resistance tests (using a 2.5mm diameter probe to detect gaps). At the same time, vibration table tests are used to verify the vibration reduction effect, ensuring that the noise of the motor 1 is reduced to the target range during operation. In addition, long-term operation tests of the motor 1 in harsh environments such as high temperature, high humidity, and dust are also incorporated into the production process to verify the protective performance of the capacitor box 2 and the stability of the motor 1 by simulating actual working conditions. In terms of quality control, each batch of products must pass fire and explosion protection tests (such as high-temperature combustion tests) and IP44 or higher protection level certification to ensure compliance with industry standards.

[0055] Preferably, the fire-retardant sealant layer fills the mounting groove.

[0056] The fireproof sealant layer fills the mounting groove, preventing liquids and dust from accumulating inside the mounting groove and further improving the seal between the capacitor box 2 and the outer casing 4.

[0057] The fireproof sealant layer enables the capacitor box 2 to have fireproof and explosion-proof functions, allowing the motor 1 to be used in places with high fireproof and explosion-proof requirements and high protection level requirements, thus expanding the application field of the motor 1.

[0058] The motor 1, which uses the aforementioned capacitor box 2, achieves a protection level of IP44 (splash-proof and resistant to solid foreign objects with a diameter of 2.5mm) or higher.

[0059] Preferred, such as Figures 1-3 As shown, there are two end caps 5, and each end cap 5 has a connecting flange at its opening. The two end caps 5 are connected together via the connecting flange to form the outer shell 4. The cover body 9 is provided with a relief groove, and the connecting flange is inserted into the relief groove. A sealing layer is provided between the connecting flange and the relief groove.

[0060] The two end caps 5 are combined to form the outer shell 4, which simplifies the structure of the outer shell 4. By setting a relief groove on the cover 9, it is beneficial to the sealing fit between the connecting flange and the cover 9. Setting a sealing layer between the connecting flange and the relief groove is beneficial to improving the sealing performance between the cover 9 and the outer shell 4.

[0061] Preferred, such as Figures 5-8As shown, a fixing plate 10 is provided on the cover 9, and the fixing plate 10 is provided with a connecting hole 11. The fixing plate 10 fits with the connecting flange; the motor 1 includes bolts and nuts, and the bolts pass through the two connecting flanges and the connecting hole 11 and are locked by the nuts.

[0062] By setting a fixing plate 10 on the cover 9, and setting a connecting hole 11 on the fixing plate 10, the fixing plate 10 is also fixed by fixing the bolts and nuts of the two end caps 5, thereby fixing the capacitor box 2, simplifying the fixing structure of the capacitor box 2, and helping to ensure the integrity of the outer shell 4.

[0063] During the assembly of capacitor box 2, a torque wrench is used to control the tightening force, so that the sealing gasket 6 is compressed evenly.

[0064] Preferred, such as Figure 1 As shown, the end cap 5 is provided with a through hole 12 for passing wires, and the cover body 9 covers the through hole 12.

[0065] The wires inside the motor 1 are connected to the capacitor 3 through the through hole 12. The cover 9 covers the through hole 12, which prevents the through hole 12 from communicating with the outside air and helps to improve the sealing of the motor 1.

[0066] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0067] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A capacitor box (2) is applied to a motor (1), the capacitor box (2) being fixed to the outer casing (4) of the motor (1), the capacitor box (2) being used to house a capacitor (3), characterized in that, The capacitor box (2) also includes a cover (9) and a sealing gasket (6) disposed between the cover (9) and the outer shell (4). A fireproof sealant layer is disposed on the outer periphery of the sealing gasket (6).

2. The capacitor box according to claim 1, characterized in that, The cover (9) has a mounting position for a capacitor (3) inside, and a heat insulation pad (8) is provided at the mounting position. The heat insulation pad (8) is located between the capacitor (3) and the mounting position.

3. The capacitor box according to claim 2, characterized in that, The mounting position is provided with a fixing groove (7), the heat insulation pad (8) is inserted into the fixing groove (7), and a part of the capacitor (3) can be placed in the fixing groove (7).

4. The capacitor box according to claim 1, characterized in that, The sealing gasket (6) is elastic, and / or the sealing gasket (6) has a heat insulation function.

5. An electric motor, characterized in that, It includes an end cap (5) and a capacitor box as described in any one of claims 1-4, wherein the capacitor box (2) is fixed to the end cap (5).

6. The motor according to claim 5, characterized in that, The end cap (5) is provided with a mounting position, the mounting position includes a mounting groove, and the capacitor box (2) is covered in the mounting groove.

7. The motor (1) according to claim 6, characterized in that, The fire-resistant sealant layer fills the mounting groove.

8. The motor (1) according to claim 5, characterized in that, There are two end caps (5), and the openings of the two end caps (5) are provided with connecting flanges. The two end caps (5) are connected together through the connecting flanges to form the outer shell (4). The cover (9) is provided with a relief groove. The connecting flange is inserted into the relief groove, and a sealing layer is provided between the connecting flange and the relief groove.

9. The motor according to claim 8, characterized in that, A fixing plate (10) is provided on the cover (9), and the fixing plate (10) is provided with a connecting hole (11). The fixing plate (10) fits against the connecting flange. The motor (1) includes a bolt and a nut. The bolt passes through the two connecting flanges and the connecting hole (11) and is locked by the nut.

10. The motor according to claim 5, characterized in that, The end cap (5) is provided with a through hole (12) for passing wires, and the cover (9) covers the through hole (12).

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