Flattened compressor motor giving consideration to performance balance and refrigerator

Abstract

The invention discloses a flattened compressor motor giving consideration to performance balance and a refrigerator, and relates to the technical field of compression equipment, and the motor comprises a stator core, a stator coil and a compressor cylinder seat. An annular space on the inner side of the stator core is used for installing the rotor. The stator coils are arranged along an arc line to form an avoiding gap and are arranged in a diagonal structure, so that magnetic field harmonic waves are reduced, and the electromagnetic performance is improved. The head of the compressor cylinder seat is contained in the receding notch, the height of the cylinder seat is reduced, and flat design is achieved. By optimizing the winding structure, it is ensured that the performance of the flattened motor is not reduced, and meanwhile the heat dissipation efficiency and the structural stability are improved. According to the design, the height of the compressor is reduced, meanwhile, the performance balance is considered, and the requirements of modern household appliances for compact space and efficient performance are met. The invention further provides a refrigerator comprising the motor, the volume of the refrigerator is increased, the user experience is improved, and the application range of the compressor is expanded.

Description

Technical Field

[0001] The present invention relates to the technical field of compression equipment, and more particularly to a flattened compressor motor and a refrigerator with balanced performance. Background Art

[0002] As modern home appliances continue to demand more space and higher performance, the structural design of refrigeration compressors is also being optimized. Traditional refrigeration compressors, due to their high height and large size, struggle to meet the compact space requirements of modern home appliances. To address this issue, a flattened refrigeration compressor has emerged in the prior art (as shown in patent CN116877377A). By lowering key components such as the cylinder block and crankshaft assembly, the overall height of the compressor is reduced, making it more adaptable to the installation requirements of small appliances such as small ice makers, dehumidifiers, and water dispensers.

[0003] However, although this existing flattened structural design has achieved a certain degree of height reduction, it also has some obvious defects and shortcomings. First, in order to avoid the height of the motor assembly, the cylinder head must protrude forward a long distance, beyond the outer edge of the motor, thereby forming a structure with a lowered cylinder head. This design requires the connecting rod to be lengthened, making the lever arm too long, which not only affects the performance of the entire machine, but also easily causes mechanical wear and reduces the service life of the compressor. Secondly, the middle of the connection between the cylinder head and the crankcase is hollowed out, which reduces the structural strength. At the same time, the cylinder head is far away from the center of the motor, resulting in top-heavy and poor balance, which in turn causes problems such as noise and vibration, seriously affecting the user experience. In addition, since there is no hollowing at the tail of the cylinder, the cylinder bore cannot be processed through, resulting in the inability of the tool to process from top to bottom when honing the cylinder bore, which easily leads to problems such as flat holes, increasing the difficulty and cost of processing.

[0004] In response to the above-mentioned defects of the existing flat structure refrigeration compressor, the present invention aims to provide a new structural design to overcome the shortcomings of the existing technology, further optimize the flat structure, improve the performance, reliability and processability of the refrigeration compressor, and at the same time reduce noise and vibration, so as to meet the demand of modern household appliances for efficient, compact and low-noise refrigeration compressors. Summary of the Invention

[0005] In view of this, the present invention provides a flat compressor motor and a refrigerator with balanced performance, aiming to solve the above technical problems.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A flat compressor motor with balanced performance, comprising:

[0008] A stator core, wherein the annular space inside the stator core is used to install the rotor;

[0009] stator windings, wherein the number of the stator windings is multiple, and the multiple stator windings are arranged on the stator core around the outside of the annular space, and the multiple stator windings are arranged in sequence along an arc to form an avoidance gap. The stator windings are arranged in a diagonal structure on the stator core, thereby reducing magnetic field harmonics and improving electromagnetic performance;

[0010] The compressor cylinder seat is arranged above the stator core, and the head of the compressor cylinder seat is accommodated in the avoidance gap, so that the height of the compressor cylinder seat is reduced.

[0011] Through the above technical solution, the present invention effectively reduces the height of the cylinder seat by forming an avoidance gap on the stator core to accommodate the head of the compressor cylinder seat, thereby realizing a flat design of the overall structure of the compressor and meeting the demand for compact space of modern household appliances. Although the number of coils is reduced to achieve a flat design, the stator coils are arranged in a diagonal structure to reduce magnetic field harmonics, improve electromagnetic performance, and ensure that the performance of the motor does not decrease after flattening. This design takes into account the balance of performance while reducing the height of the compressor, so that the compressor can maintain efficient operation while maintaining a compact structure. The stator coils arranged in a diagonal structure not only optimize the magnetic field distribution, but also improve the operating efficiency and stability of the motor. This structural design enables the motor to maintain good electromagnetic performance while reducing the number of coils, thereby achieving performance optimization on the basis of a flat design.

[0012] Preferably, in the aforementioned flattened compressor motor with balanced performance, the stator winding wire diameter is increased by 10%-20%. Increasing the stator winding wire diameter reduces winding resistance, thereby reducing copper loss and improving the motor's electrical conductivity and efficiency. While reducing the number of windings to achieve a flattened design, the increased wire diameter maintains the motor's overall performance, ensuring that the motor's performance remains unchanged after flattening.

[0013] Preferably, in the aforementioned flattened compressor motor with balanced performance, an annular oil groove is provided at the rear of the compressor cylinder block. When the compressor is running, refrigeration oil flows into the annular oil groove, removing heat from the stator windings. This annular oil groove at the rear of the compressor cylinder block utilizes the flow of refrigeration oil to remove heat generated by the stator windings, effectively improving heat dissipation efficiency and ensuring the stability and reliability of the motor over long periods of operation. Good heat dissipation helps reduce motor failures due to overheating and extends the motor's service life.

[0014] Preferably, in the above-mentioned flat compressor motor with balanced performance, the stator core is made of 250 silicon steel. Compared to traditional materials, 250 silicon steel has a higher resistivity, effectively reducing iron loss and energy loss during motor operation, thereby improving motor efficiency. The high magnetic induction intensity of 250 silicon steel enables the motor to achieve the same magnetic flux in a smaller size, further improving motor performance while reducing material usage and costs.

[0015] Preferably, in the aforementioned flat compressor motor with balanced performance, the rotor magnet height is increased by 10%-15%. Increasing the rotor magnet height enhances the motor's magnetic field strength, thereby improving its output power and efficiency. This allows the motor to deliver greater output power for the same input power, meeting higher compression requirements. Adjusting the rotor magnet height optimizes the motor's electromagnetic design, further improving its overall performance and making it more suitable for flat compressor applications.

[0016] Preferably, in the aforementioned flattened compressor motor with balanced performance, the stator core sidewalls have radially inwardly recessed weight-reducing notches at locations corresponding to the avoidance notches. The provision of radially inwardly recessed weight-reducing notches on the stator core sidewalls reduces the stator core's weight and material costs without compromising motor performance. The design of these weight-reducing notches makes the stator core structure more rational, further optimizes the overall structural design of the flattened compressor, and improves its compactness and stability.

[0017] Preferably, in the above-mentioned flattened compressor motor that takes into account balanced performance, the stator core is provided with a plurality of winding installation slots spaced apart along the circumference of the rotor, the winding installation slots extending axially along the annular space, and teeth formed between adjacent winding installation slots, and the stator winding passes through the winding installation slots and is wound on the teeth. A plurality of winding installation slots are provided on the stator core, and teeth are formed between adjacent slots, and the stator winding passes through the installation slots and is wound on the teeth. This layout makes the winding distribution more uniform, further optimizes the magnetic field distribution, and improves the electromagnetic performance of the motor. Reasonable winding layout and tooth design enhance the structural strength of the stator core, making the motor more stable and reliable during operation.

[0018] Preferably, in the aforementioned flattened compressor motor with balanced performance, the number of teeth matches the number of stator coils. This ensures that each coil has a corresponding tooth for winding, resulting in a more uniform winding distribution, further reducing magnetic field harmonics and improving the motor's operating efficiency and stability. This matching of teeth and coil numbers further optimizes the motor's electromagnetic performance, ensuring that the motor's performance remains unaffected after the flattening design.

[0019] Preferably, in the aforementioned flat compressor motor with balanced performance, the diameter of the two coil installation slots immediately adjacent to and on either side of the avoidance notch is half the diameter of the remaining coil installation slots. By adjusting the diameter of the coil installation slots, the heat dissipation design is optimized while maintaining motor performance, balancing heat dissipation requirements with motor performance and improving the overall performance and reliability of the motor.

[0020] The present invention also provides a refrigerator comprising the above-mentioned flat compressor motor with balanced performance.

[0021] Through the above technical solution, the present invention applies a flattened compressor motor with balanced performance to refrigerators, reducing the height of the refrigerator compressor, thereby freeing up more space inside the refrigerator, increasing the refrigerator's capacity, and improving refrigerator performance and user experience. This flattened compressor motor is not only suitable for refrigerators, but can also be widely used in other small household appliances such as small ice makers, dehumidifiers, and water dispensers, expanding the application range of compressors and meeting the compactness requirements of various household appliances.

[0022] It can be seen from the above technical solutions that, compared with the prior art, the present invention provides a flat compressor motor and refrigerator with balanced performance, which has the following beneficial effects:

[0023] 1. Balance between flattening and performance: A clearance notch on the stator core accommodates the cylinder head, reducing the compressor height and achieving a flattened design. At the same time, the stator coils are arranged in a diagonal structure to reduce magnetic field harmonics and improve electromagnetic performance, ensuring that performance does not decrease after flattening, thus achieving a balance between space optimization and performance.

[0024] 2. Winding optimization: Increase the stator wire diameter to reduce winding resistance, reduce copper loss, and maintain conductive performance; set an annular oil groove at the tail of the cylinder seat to use the flow of refrigeration oil to remove heat, improve heat dissipation efficiency, ensure stable operation of the motor, and extend its service life.

[0025] 3. Material and structure improvements: 250 silicon steel is used to make the stator core to reduce iron loss and improve motor efficiency; the height of the rotor magnetic tile is increased to enhance the magnetic field strength and improve output power; weight-reducing notches are set on the side walls of the stator core to reduce weight, reduce costs and optimize the structure.

[0026] 4. Comprehensive performance improvement: Coil installation slots and teeth are set on the stator core to optimize the winding layout and evenly distribute the magnetic field; the number of teeth and coils is matched to reduce magnetic field harmonics; the diameter of the coil installation slots on both sides of the gap is optimized to balance heat dissipation and performance.

[0027] 5. Application expansion: This flattened compressor motor is suitable for small household appliances such as refrigerators. It reduces the height of the compressor, increases the refrigerator volume, improves performance and user experience, and expands the application range of the compressor to meet compact requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0029] Figure 1 The accompanying drawing is a schematic diagram of the exploded structure of a flat compressor motor with balanced performance provided by the present invention, viewed from a top view;

[0030] Figure 2 The accompanying drawing is a schematic diagram of the exploded structure of a flat compressor motor with balanced performance provided by the present invention, viewed from above;

[0031] Figure 3 The accompanying drawing is a schematic diagram of a half-section structure of a flat compressor motor with balanced performance provided by the present invention;

[0032] Figure 4 The accompanying drawing is a schematic diagram of the structure of a flat compressor motor with balanced performance provided by the present invention, viewed from a top view;

[0033] Figure 5 The accompanying drawing is a schematic diagram of the structure of a flat compressor motor with balanced performance provided by the present invention when viewed from above;

[0034] Figure 6 The accompanying drawing is a schematic diagram of the structure of the stator core provided by the present invention from a top view;

[0035] Figure 7 The accompanying drawing is a schematic structural diagram of the stator core provided by the present invention when viewed from above;

[0036] Figure 8 The accompanying drawing is a schematic diagram of the structure of the compressor cylinder base provided by the present invention from a top view;

[0037] Figure 9 The accompanying drawing is a schematic structural diagram of the compressor cylinder seat provided by the present invention when viewed from above.

[0038] in:

[0039] 10- stator core;

[0040] 100-avoidance gap; 101-weight reduction gap; 102-wire package installation groove; 103-tooth; 104-ring

[0041] space;

[0042] 20- stator coil;

[0043] 30-compressor cylinder seat;

[0044] 300-head; 301-annular oil groove. DETAILED DESCRIPTION

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0046] See attached Figure 1 To the attached Figure 9 The embodiment of the present invention discloses a flat compressor motor with balanced performance, comprising:

[0047] The stator core 10 and the annular space 104 inside the stator core 10 are used to install the rotor;

[0048] There are multiple stator windings 20, each of which is arranged on the stator core 10 around the outside of the annular space 104. The multiple stator windings 20 are arranged in sequence along an arc and form an avoidance gap 100. The stator windings 20 are arranged in a diagonal structure on the stator core 10, thereby reducing magnetic field harmonics and improving electromagnetic performance.

[0049] The compressor cylinder base 30 is disposed above the stator core 10 , and a head portion 300 of the compressor cylinder base 30 is accommodated in the avoidance notch 100 , so that the height of the compressor cylinder base 30 is reduced.

[0050] The diagonal arrangement of the stator windings reduces magnetic field harmonics and improves electromagnetic performance. From the perspective of electrical engineering, diagonally arranged windings achieve a more uniform magnetic field distribution. When the motor is running, the current in the stator windings generates a magnetic field. The diagonal arrangement of the windings allows these magnetic fields to interact, offsetting some of the harmonic magnetic fields. Based on the principle of vector superposition of magnetomotive force, the diagonal arrangement of the windings can enhance the fundamental magnetomotive force and effectively suppress harmonic magnetomotive forces, thereby improving the efficiency and performance of the motor and reducing vibration and noise during operation.

[0051] In order to further optimize the above technical solution, the wire diameter of the stator winding 20 is increased by 10%-20%. Increasing the wire diameter of the stator winding can reduce the winding resistance, reduce copper loss, and maintain the conductive performance. Specifically, if the original winding diameter is 1.0mm, the optimized winding diameter can be increased to 1.1mm-1.2mm. From the principle of electromagnetics, according to Ohm's law R=ρ(L / A), where R is resistance, ρ is resistivity, L is the length of the wire, and A is the cross-sectional area of ​​the wire. Increasing the wire diameter means increasing the cross-sectional area A of the wire, thereby reducing the resistance R, thereby reducing the heat loss generated when the current passes through the winding, and improving the efficiency of the motor.

[0052] In order to further optimize the above technical solution, an annular oil groove 301 is provided at the tail of the compressor cylinder base 30, and there is no oil discharge hole at the bottom of the compressor cylinder base 30. When the compressor is running, the refrigeration oil flows into the annular oil groove 301 and takes away the heat of the stator winding.

[0053] In order to further optimize the above technical solution, the stator core 10 is made of 250 silicon steel.

[0054] To further optimize the above technical solution, the rotor magnetic tile height is increased by 10%-15%. If the original rotor magnetic tile height is 30mm, the optimized rotor magnetic tile height can be increased to 33mm-34.5mm.

[0055] In order to further optimize the above technical solution, a radially inwardly recessed weight-reducing notch 101 is provided at a position of the side wall of the stator core 10 corresponding to the avoidance notch 100 .

[0056] In order to further optimize the above technical solution, the stator core 10 is provided with a plurality of winding installation grooves 102 arranged at intervals along the circumference of the rotor. The winding installation grooves 102 extend axially along the annular space 104, and teeth 103 are formed between adjacent winding installation grooves 102. The stator winding 20 passes through the winding installation grooves 102 and is wound on the teeth 103.

[0057] In order to further optimize the above technical solution, the number of teeth 103 matches the number of stator coils 20 .

[0058] In order to further optimize the above technical solution, the diameter of the two wire bundle installation grooves 102 on both sides of the avoidance gap 100 and adjacent thereto is half of the diameter of the other wire bundle installation grooves 102 .

[0059] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Reference can be made to the common and similar parts between the various embodiments. For the devices disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple, and the relevant parts can be referred to the method description.

[0060] The foregoing description of the disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A flat compressor motor with balanced performance, characterized in that: include: A stator core (10), wherein an annular space (104) inside the stator core (10) is used for installing a rotor; Stator winding packages (20), the number of the stator winding packages (20) is multiple, the multiple stator winding packages (20) are arranged on the stator core (10) around the outside of the annular space (104), the multiple stator winding packages (20) are arranged in sequence along an arc line, and avoidance gaps (100) are formed, and the stator winding packages (20) are arranged in a diagonal structure on the stator core (10), thereby reducing magnetic field harmonics and improving electromagnetic performance; A compressor cylinder seat (30) is provided above the stator core (10), and a head portion (300) of the compressor cylinder seat (30) is accommodated in the avoidance notch (100), so that the height of the compressor cylinder seat (30) is reduced.

2. A flat compressor motor with balanced performance according to claim 1, characterized in that: The wire diameter of the stator winding package (20) is increased by 10%-20%.

3. The flat compressor motor with balanced performance according to claim 1, characterized in that: An annular oil groove (301) is provided at the rear of the compressor cylinder seat (30). When the compressor is running, refrigeration oil flows into the annular oil groove (301) and takes away the heat of the stator coil.

4. The flat compressor motor with balanced performance according to claim 1, characterized in that: The stator core (10) is made of 250 silicon steel.

5. The flat compressor motor with balanced performance according to claim 1, characterized in that: The height of the rotor magnetic shoe is increased by 10%-15%.

6. The flat compressor motor with balanced performance according to claim 1, characterized in that: A radially inwardly recessed weight-reducing notch (101) is provided at a position on the side wall of the stator core (10) corresponding to the avoidance notch (100).

7. The flat compressor motor with balanced performance according to claim 1, characterized in that: The stator core (10) is provided with a plurality of coil installation grooves (102) spaced apart along the circumference of the rotor. The coil installation grooves (102) extend axially along the annular space (104). Teeth (103) are formed between adjacent coil installation grooves (102). The stator coil (20) passes through the coil installation grooves (102) and is wound around the teeth (103).

8. The flat compressor motor with balanced performance according to claim 7, characterized in that: The number of the teeth (103) matches the number of the stator coils (20).

9. The flat compressor motor with balanced performance according to claim 8, characterized in that: The diameter of the two wire package installation grooves (102) on both sides of the avoidance gap (100) and adjacent thereto is half the diameter of the other wire package installation grooves (102).

10. A refrigerator, characterized in that: A flat compressor motor with balanced performance comprising any one of claims 1-9.

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