Three-phase line plastic shell with reduced compressor volume

Abstract

This utility model relates to a plastic housing structure, specifically a three-phase plastic housing that reduces the size of a compressor. It includes a plastic housing body fixedly mounted on a casing. The plastic housing body is hollow, forming a cavity. Each end of the plastic housing body has a through-hole for the three-phase wires to pass through. A terminal post is provided on the upper surface of the plastic housing body. Each terminal post communicates with the corresponding through-hole through the hollow cavity within the plastic housing body. Three through-holes are provided: two are located on one side of the plastic housing body, and the third is located on the other side. The plastic housing body is arranged in a "7" shape. Through this technical solution, this utility model solves the problem of an excessively wide plastic housing body, which increases the size of the compressor.

Description

Technical Field

[0001] This utility model relates to a plastic shell structure, specifically a three-phase plastic shell structure that reduces the size of the compressor. Background Technology

[0002] In the structural design of compressors, the connection and fixing method of the three-phase lines has a significant impact on the overall size and performance.

[0003] Existing compressor three-phase line housings typically employ a single-sided three-hole wiring layout, where three parallel wiring holes are located on one side of the housing for the introduction of three-phase lines. This design presents several problems: First, to accommodate the arrangement of the three wiring holes, the lateral width of the housing must be increased, resulting in a bulky housing. Second, the excessively large housing encroaches on the effective space inside the compressor, particularly near the rotor, potentially interfering with the rotor's normal operation and even affecting the compressor's efficiency and stability. Third, the single-sided wiring arrangement leads to a concentrated arrangement of the three-phase lines within the housing, which is detrimental to heat dissipation. Utility Model Content

[0004] In order to solve the problems in related technologies, this utility model provides a three-phase line plastic housing that reduces the size of the compressor. This device solves the problem of excessive width of the plastic housing body, which increases the size of the compressor.

[0005] To solve the above problems, the following technical solutions are provided: The present invention relates to a three-phase wire housing with a reduced compressor volume, comprising a housing body fixedly mounted on a cover, the housing body being hollow to form a hollow cavity, and wire holes for three-phase wires to pass through being provided at both ends of the housing body, and a terminal post being provided on the upper end face of the housing body, each terminal post being connected to the corresponding wire hole through the hollow cavity inside the housing body.

[0006] In the above solution, the wiring holes are set on both sides of the plastic housing body, replacing the single-sided three-hole layout in the prior art. This significantly reduces the lateral width of the plastic housing body, making the overall structure of the plastic housing body more compact. The reduction in the volume of the plastic housing body increases the gap between it and the rotor, eliminating the potential interference risk of the plastic housing body to the rotor's movement space. It also reduces the problem of increased rotor energy consumption and shortened lifespan caused by mechanical friction or magnetic field interference, thus solving the problem of excessively wide plastic housing body, which increases the size of the compressor. Furthermore, the hollow cavity allows the three-phase wires to be concealed within the plastic housing body, effectively reducing the overall size of the compressor.

[0007] There are three wire passage holes, two of which are located on one side of the plastic shell body, and the other wire passage hole is located on the other side of the plastic shell body.

[0008] In the above solution, the three wire passage holes are set on both sides of the plastic shell body. Compared with the traditional single-sided three-hole layout, the lateral width of the plastic shell is significantly reduced, avoiding spatial interference with key components such as the rotor inside the compressor. The distributed wire passage hole design on both sides makes the three-phase wires more evenly stressed, reducing the problem of excessive local stress caused by concentrated wiring and extending the service life of the lines. The three-phase wires are distributed inside the plastic shell, increasing the heat dissipation space between the lines and reducing the risk of insulation aging caused by heat accumulation.

[0009] The plastic shell body is arranged in a figure-7 shape.

[0010] In the above solution, the plastic shell body is designed, and the wire holes are distributed on both sides. The 7-shaped structure allows the three-phase wires to form a reasonable bending angle, reducing the bending stress of the line, and facilitating connection with external equipment.

[0011] A baffle is provided inside the wire passage hole. The baffle abuts against the inner wall of the plastic shell body. A through hole is provided on the baffle. The inner diameter of the through hole is slightly larger than the outer diameter of the three-phase wire.

[0012] In the above solution, the baffle is set up so that it fits tightly against the inner wall of the plastic shell, effectively preventing external dust, moisture and other impurities from entering the compressor through the wire hole, which helps to extend the service life of electrical components. The inner diameter of the through hole of the baffle is slightly larger than the outer diameter of the three-phase wire, which not only ensures that the three-phase wire can pass through smoothly, but also limits its shaking and reduces the risk of the three-phase wire loosening due to vibration.

[0013] The terminals are arranged in a straight line at equal intervals, and the axis of the terminals and the axis of the corresponding wire holes are located in the same vertical plane.

[0014] The above solution provides stable mechanical fixing points for the three-phase power lines by setting the terminal blocks, preventing the lines from loosening due to vibration or external force.

[0015] The plastic shell body and the terminal block are connected as a single unit through injection molding.

[0016] By adopting the above solution, the connection strength between the plastic housing and the terminal block is enhanced, and the sealing performance of the plastic housing is improved.

[0017] The above solution has the following advantages: 1. The three-phase housing of this utility model, which reduces the size of the compressor, includes a housing body fixedly mounted on a cover. The housing body is hollow, forming a hollow cavity. Both ends of the housing body are provided with wire holes for the three-phase wires to pass through. A terminal post is provided on the upper end face of the housing body. Each terminal post is connected to the corresponding wire hole through the hollow cavity inside the housing body. This application sets the wire holes on both sides of the housing body, replacing the single-sided three-hole layout in the prior art. This significantly reduces the lateral width of the housing body, making the overall structure of the housing body more compact. The reduction in the size of the housing body increases the gap between it and the rotor, eliminating the potential interference risk of the housing body to the rotor's movement space. It also reduces the problem of increased rotor energy consumption and shortened lifespan caused by mechanical friction or magnetic field interference, thus solving the problem of excessively wide housing bodies that increase the size of the compressor. Furthermore, the hollow cavity allows the three-phase wires to be concealed within the housing body, effectively reducing the overall size of the compressor.

[0018] 2. There are three wire passage holes. Two wire passage holes are located on one side of the housing body, and the third wire passage hole is located on the other side of the housing body. By distributing the three wire passage holes on both sides of the housing body, compared with the traditional single-sided three-hole layout, the lateral width of the housing is significantly reduced, avoiding spatial interference with key components such as the compressor rotor. The distributed wire passage hole design on both sides makes the three-phase wires more evenly stressed, reducing the problem of excessive local stress caused by concentrated wiring and extending the service life of the lines. The three-phase wires are distributed inside the housing, increasing the heat dissipation space between the lines and reducing the risk of insulation aging caused by heat accumulation. Attached Figure Description

[0019] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein: Figure 1 A schematic diagram of a three-phase linear plastic-cased compressor with a reduced compressor size; Figure 2 A top view of a three-phase linear plastic housing with a reduced compressor size; Figure 3 Left view of a three-phase linear plastic housing with a reduced compressor size; Figure 4 A schematic diagram of the structure of the plastic housing body in a three-phase line with a reduced compressor size; Figure 5 for Figure 1 Enlarged diagram of section A in the middle; Figure 6 This is a schematic diagram of the assembly of the three-phase line and the plastic housing body; Explanation of reference numerals in the attached diagram: 1. Cover; 2. Plastic housing body; 3. Terminal block; 4. Wiring hole; 5. Baffle; 6. Through hole. Detailed Implementation

[0020] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In specific embodiment 1, such as Figures 1-6 As shown, the three-phase housing of this utility model with reduced compressor size includes a housing body 2 fixedly mounted on a casing 1. The housing body 2 is hollow, forming a hollow cavity. Both ends of the housing body 2 are provided with wire-passing holes 4 for the three-phase wires to pass through. A terminal post 3 is provided on the upper surface of the housing body 2. Each terminal post 3 communicates with the corresponding wire-passing hole 4 through the hollow cavity inside the housing body 2. By placing the wire-passing holes 4 on both sides of the housing body 2, replacing the single-sided three-hole layout of the prior art, the lateral width of the housing body 2 is significantly reduced, making the overall structure of the housing body 2 more compact. The reduced volume of the housing body 2 increases the gap between it and the rotor, eliminating the potential interference risk of the housing body 2 to the rotor's movement space, and reducing the problems of increased rotor energy consumption and shortened lifespan caused by mechanical friction or magnetic field interference. Furthermore, the hollow cavity allows the three-phase wires to be concealed within the housing body 2, effectively reducing the overall size of the compressor.

[0022] like Figure 4 As shown, there are three wire passage holes 4. Two wire passage holes 4 are located on one side of the plastic shell body 2, namely wire passage hole a and wire passage hole b, and the other wire passage hole 4 is located on the other side of the plastic shell body 2, namely wire passage hole c. By distributing the three wire passage holes 4 on both sides of the plastic shell body 2, compared with the traditional single-side three-hole layout, the lateral width of the plastic shell is significantly reduced, avoiding spatial interference with key components such as the rotor inside the compressor. The distributed wire passage hole 4 design on both sides makes the three-phase wires more evenly stressed, reducing the problem of excessive local stress caused by concentrated wiring and extending the service life of the lines. The three-phase wires are distributed inside the plastic shell, increasing the heat dissipation space between the lines and reducing the risk of insulation aging caused by heat accumulation.

[0023] like Figure 4 As shown, the plastic shell body 2 is arranged in a figure-7 shape, which, together with the wire holes 4 distributed on both sides, allows the three-phase wires to form a reasonable bending angle, reducing the bending stress of the line, and at the same time facilitating connection with external equipment.

[0024] like Figure 1As shown, the plastic shell body 2 and the terminal block 3 are connected as an integral structure by injection molding, which enhances the connection strength between the plastic shell body 2 and the terminal block 3 and improves the sealing performance of the plastic shell body 2.

[0025] In a specific embodiment 2, such as Figure 5 As shown, the difference between this embodiment and embodiment 1 is that a baffle 5 is provided inside the wire hole 4 in this embodiment. The baffle 5 abuts against the inner wall of the plastic shell body 2 around its perimeter. The baffle 5 fits tightly against the inner wall of the plastic shell, effectively preventing external dust, moisture and other impurities from entering the compressor through the wire hole 4, which is beneficial to extending the service life of electrical components. A through hole 6 is provided on the baffle 5. The inner diameter of the through hole 6 is slightly larger than the outer diameter of the three-phase wire, which not only ensures that the three-phase wire passes through smoothly, but also restricts its shaking and reduces the risk of the three-phase wire loosening due to vibration.

[0026] In a specific embodiment 3, such as Figure 1 As shown, the difference between this embodiment and embodiments 1 and 2 is that the terminals 3 in this embodiment are arranged in a straight line at equal intervals, and the axis of the terminal 3 and the axis of the corresponding wire hole 4 are located in the same vertical plane; by setting the terminal 3, a stable mechanical fixing point is provided for the three-phase power line to prevent the line from loosening due to vibration or external force.

[0027] In this implementation, such as Figure 6 As shown, the working process is as follows: the three-phase wires L1, L2, and L3 of the motor winding are installed into the corresponding wire holes 4 as required. For example, the three-phase wire L1 is passed through the wire hole a, the three-phase wire L2 is passed through the wire hole b, and the three-phase wire L3 is passed through the wire hole c. Each three-phase wire passes through the through hole 6 of the inner baffle 5 of the corresponding wire hole 4, and then passes into the hollow cavity. Finally, the external connection wire extends from the terminal 3 into the hollow cavity and is electrically connected to the three-phase wire.

[0028] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and 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 of this utility model. In the description of this utility model, unless otherwise specified and limited, it should be noted that the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components, and can be direct connections or indirect connections through an intermediate medium. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0029] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation. For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all implementation methods here, and any obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A three-phase line plastic housing with a reduced compressor size, comprising a plastic housing body (2) fixedly mounted on a housing (1), characterized in that, The plastic shell body (2) is arranged in a hollow shape to form a hollow cavity. Both ends of the plastic shell body (2) are respectively provided with wire holes (4) for three-phase wires to pass through. The upper end face of the plastic shell body (2) is provided with a terminal post (3). Each terminal post (3) is connected to the corresponding wire hole (4) through the hollow cavity inside the plastic shell body (2).

2. The three-phase linear plastic housing with reduced compressor volume as described in claim 1, characterized in that, The wire passage hole (4) is provided in three parts. Two of the wire passage holes (4) are located on one side of the plastic shell body (2), and the other wire passage hole (4) is located on the other side of the plastic shell body (2).

3. The three-phase linear plastic housing with reduced compressor volume as described in claim 1, characterized in that, The plastic shell body (2) is arranged in a figure-7 shape.

4. The three-phase linear plastic housing with reduced compressor volume as described in claim 2, characterized in that, A baffle (5) is provided inside the wire hole (4). The baffle (5) abuts against the inner wall of the plastic shell body (2) around its perimeter. A through hole (6) is provided on the baffle (5). The inner diameter of the through hole (6) is slightly larger than the outer diameter of the three-phase wire.

5. The three-phase linear plastic housing with reduced compressor volume as described in claim 2, characterized in that, The terminals (3) are arranged in a straight line at equal intervals, and the axis of the terminals (3) and the axis of the corresponding wire holes (4) are located in the same vertical plane.

6. The three-phase linear plastic housing with reduced compressor volume as described in claim 1, characterized in that, The plastic shell body (2) and the terminal block (3) are connected as an integral structure by injection molding.

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