Supporting structure for reducing height of compressor and compressor

Abstract

The invention discloses a supporting structure for reducing the height of a compressor and the compressor, the supporting structure comprises a stator, the stator is provided with a mounting surface for mounting a stator screw, and the mounting surface is arranged in a sinking manner relative to the stator end surface on the same side; the sunken mounting face is matched with one end of an elastic supporting piece, and the other end of the elastic supporting piece is connected with a supporting part of the compressor in a matched mode. According to the invention, the mounting surface of the stator is designed into a sunken structure, and the conical pressure spring with a small head and a large bottom is matched with the mounting surface, so that the mounting base point of a support system is reduced, the axial rigidity distribution of the pressure spring is more reasonable, the instability resistance is obviously enhanced, and the head of the pressure spring is compactly matched with a sunken concave surface; and therefore, the overall height of the compressor is effectively reduced in a limited space, and the electromagnetic efficiency of the motor is prevented from being influenced by structural modification. In addition, the noise reduction cover is of a concave structure, so that the overall height of the compressor can be reduced by 20-30 mm.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and more specifically, to a support structure and compressor for reducing compressor height. Background Technology

[0002] As a key piece of equipment that converts mechanical energy into gas pressure energy, the compressor's structural compactness, operational stability, and vibration and noise control are important indicators for evaluating its design quality. Among these, the compressor's support structure, especially the elastic connection and limiting system between the motor stator and the housing, directly affects the overall height of the compressor, its impact resistance during transportation, and its vibration and noise performance during operation.

[0003] In traditional compressor designs, the motor stator is typically secured with stator screws. The head of the stator screw or its matching cap, the supporting block below, and a cylindrical compression spring (i.e., a compression spring with a uniform inner diameter throughout) together constitute a support and limiting system. The typical design concept of this system is as follows: the compression spring provides elastic support to isolate vibration, while a certain minimum clearance is maintained between the stator screw cap and the supporting block, serving as a displacement margin for compressor core vibration during operation. During transportation, contact provides hard limiting to prevent excessive impact.

[0004] However, this traditional support structure design has several inherent drawbacks that restrict further optimization of the compressor: 1. The uniform inner diameter compression spring may deform excessively due to insufficient rigidity when the high torque compressor starts and stops, causing twisting and bending, which may cause the core to hit the housing and cause noise problems.

[0005] 2. Because the stator screw cap and the compression spring support block need to maintain a minimum contact distance, the compression of the compression spring must be greater than this minimum distance. The stator screw cap is installed on the stator screw by interference fit, and the stator screw acts directly on the stator. The stator surface at the contact point between the stator screw and the stator is partially on the same plane as the rest of the stator surface, which results in the inability to reduce the support height.

[0006] 3. To ensure stiffness, the spring diameter or inner diameter should be as large as possible during the design of the equal inner diameter compression spring. When the spring diameter and inner diameter are increased, the stator screw mounting surface cannot be designed to be concave. If the stator concavity is too large, it will affect the motor magnetic circuit and reduce the motor efficiency.

[0007] In summary, existing compressor support structures face challenges in achieving synergistic optimization across multiple objectives, including lower overall height, higher operational stability, and better electromagnetic efficiency. An innovative support structure solution is urgently needed that can provide high rigidity and stability within a limited space, while allowing the mounting base to be lowered to reduce overall height, and without affecting the electromagnetic performance of the core motor components. Summary of the Invention

[0008] In view of the above-mentioned technical problems in related technologies, the present invention proposes a support structure and compressor that reduces the height of the compressor, which can overcome the above-mentioned shortcomings of the prior art.

[0009] To achieve the above-mentioned technical objectives, the technical solution of the present invention is implemented as follows: A support structure for reducing the height of a compressor includes a stator having a mounting surface for mounting stator screws, the mounting surface being recessed relative to a stator end face on the same side; the recessed mounting surface engages with one end of an elastic support member, and the other end of the elastic support member engages with a support portion of the compressor.

[0010] Furthermore, the mounting surface is a concave surface, and the distance between the concave surface and the stator end face is 10mm~20mm.

[0011] Furthermore, the elastic support is a conical compression spring, and the outer diameter of the conical compression spring varies along the axial direction.

[0012] Furthermore, the conical compression spring includes a head clamping coil, a bottom clamping coil, and an intermediate free coil located between the two; the outer diameter of the head clamping coil is smaller than the outer diameter of the bottom clamping coil.

[0013] Furthermore, the intermediate free ring has a conical structure with a uniformly varying cone angle, which allows the intermediate free rings to be nested layer by layer when under pressure.

[0014] Furthermore, it includes a stator screw cap and a support block, wherein the stator screw is fixed to the mounting surface by the stator screw cap; the bottom of the tapered compression spring is in contact with the support block, and the head of the tapered compression spring is in contact with the stator screw cap, so as to limit the compression stroke of the elastic support.

[0015] Furthermore, the support block is fixedly connected to the compressor housing.

[0016] Furthermore, the conical compression spring is sleeved on the outside of both the stator screw cap and the support block.

[0017] Furthermore, the stator screw cap is interference-fitted with the stator screw.

[0018] A compressor, using the aforementioned support structure for reducing compressor height, further includes an exhaust muffler cover, the exhaust muffler cover having a concave center, the exhaust muffler cover being fixed to an exhaust muffler cavity by a muffler cover screw, the muffler cover screw being located at the exact center of the concave shape, and the outer end face of the muffler cover screw being located inside the outer end face of the exhaust muffler cover body.

[0019] The beneficial effects of this invention are as follows: By designing the mounting surface of the stator as a recessed structure and using a tapered compression spring with a small head and a large bottom to cooperate with it, the mounting base of the support system can be lowered, the axial stiffness distribution of the compression spring is more reasonable, the anti-instability ability is significantly enhanced, and the head of the compression spring and the recessed concave surface are compactly matched. Thus, the invention achieves the comprehensive optimization goal of effectively reducing the overall height of the compressor, improving support stability and operational reliability, and avoiding the impact of structural modifications on the electromagnetic efficiency of the motor within a limited space. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of a support structure for a low compressor height according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the stator structure of the support structure for a low compressor height according to an embodiment of the present invention; Figure 3 This is a front view of the installation of the exhaust muffler cover of the compressor according to an embodiment of the present invention; Figure 4 This is a side view of the installation of the exhaust muffler cover of the compressor according to an embodiment of the present invention; Figure 5 This is a schematic diagram showing the limiting position of the exhaust muffler cover of the compressor according to an embodiment of the present invention; In the diagram: 1. Stator; 2. Stator screw; 3. Mounting surface; 4. Elastic support; 5. Stator screw cap; 6. Support block; 7. Stator screw mounting hole; 801. Exhaust muffler cover body; 802. Muffler cover screw; 803. Exhaust muffler cover; 804. Exhaust muffler cover for exhaust coil; 805. Coil; 806. Top cover. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0023] like Figure 1-2As shown, a support structure for reducing the height of a compressor according to an embodiment of the present invention includes a stator 1, the stator 1 having a mounting surface 3 for mounting stator screws 2, the mounting surface 3 being recessed relative to the stator end face on the same side; the recessed mounting surface 3 cooperates with one end of an elastic support member, and the other end of the elastic support member is connected to the support portion of the compressor.

[0024] Preferably, the mounting surface is a concave surface, and the distance between the concave surface and the stator end face is 10mm~20mm.

[0025] Preferably, the elastic support is a conical compression spring 4, and the outer diameter of the conical compression spring 4 varies along the axial direction.

[0026] Preferably, the conical compression spring 4 includes a head clamping ring, a bottom clamping ring, and an intermediate free ring located between the two; the outer diameter of the head clamping ring is smaller than the outer diameter of the bottom clamping ring.

[0027] Preferably, the intermediate free ring has a conical structure with a uniformly varying cone angle, so that the intermediate free ring can be nested layer by layer when under pressure.

[0028] Preferably, the system includes a stator screw cap 5 and a support block 6. The stator screw 2 is fixed to the mounting surface 3 by the stator screw cap 5. The bottom of the tapered compression spring 4 is in contact with the support block 6, and the head of the tapered compression spring 4 is in contact with the stator screw cap 5, so as to limit the compression stroke of the elastic support.

[0029] Preferably, the support block 6 is fixedly connected to the compressor housing.

[0030] Preferably, the conical compression spring 4 is sleeved on the outside of both the stator screw cap 5 and the support block 6.

[0031] Preferably, the stator screw cap 5 is interference-fitted with the stator screw 2.

[0032] A compressor, using the aforementioned support structure for reducing compressor height, further includes an exhaust muffler cover 801. The exhaust muffler cover has a concave center and is fixed to an exhaust muffler cavity by a muffler cover screw 802. The muffler cover screw 802 is located at the exact center of the concave shape, and the outer end face of the muffler cover screw 802 is located inside the outer end face of the exhaust muffler cover body.

[0033] To facilitate understanding of the above technical solutions of the present invention, the following detailed description of the above technical solutions of the present invention will be provided through specific usage methods.

[0034] In practical use, according to the support structure and compressor for reducing compressor height described in this invention, the compression spring is designed from a fully cylindrical structure to a conical structure with a small outer diameter of the head coil, a large outer diameter of the bottom coil, and a uniformly angled free coil in the middle. Because the diameter of this conical compression spring gradually changes along the axial direction, it is less prone to instability and deformation.

[0035] When the conical compression spring is compressed in the vertical space, the compression rings in the middle increase in size from top to bottom, resulting in a nested structure under force. This leads to a greater compression amount compared to the equal inner diameter compression spring design, allowing for a lower overall machine height. Furthermore, the stator surface at the contact point between the stator screw and the stator is designed to be partially off-plane. By designing the stator as a concave structure, the mounting surface of the stator screw is lower than the stator end face, further reducing the overall machine height.

[0036] The equal-inner-diameter compression spring is designed with a uniformly increasing angle from top to bottom, gradually changing axially. This results in greater stiffness compared to other equal-inner-diameter compression springs with the same spring diameter, leading to a more stable center of gravity and reducing the likelihood of instability and deformation during start-up and shutdown. The compression rings in the middle of this spring are nested layer by layer, resulting in a greater compression amount under pressure compared to equal-inner-diameter springs, and a shorter overall spring height, which can be used to reduce the overall height of the machine. The design ensures a sufficiently large bottom inner diameter to guarantee the spring's stiffness, while the reduced head inner diameter facilitates installation into the stator screw mounting recess of the motor. The motor stator is designed with a concave surface for mounting the stator screw, and this concave surface is 10-20mm lower than the stator end face. Because the inner diameter of the spring head is small, the concave surface area is small, which does not affect the motor's magnetic circuit and ensures motor efficiency. By gradually increasing the inner diameter of the compression spring along the axial direction, it is ensured that the area of ​​the stator concave surface does not affect the motor magnetic circuit. At the same time, the outer diameter at the bottom is large enough to ensure the stiffness of the compression spring. When the stator concave surface sinks by 10-20mm, the overall height of the machine can be reduced by 10-20mm.

[0037] Furthermore, the upper and lower limiting methods can use stator screws directly to limit the movement with support pins, instead of the middle stator screw cap and compression spring support block. Alternatively, compression springs can be used for limiting the movement after tensioning, replacing the limiting method in this invention. The tapered compression spring can be designed with a uniformly increasing angle from top to bottom, in the opposite direction to this design.

[0038] At the same time, the muffler cover was changed from the traditional convex shape to a concave shape. The screw holes are located at the exact center of the concave shape, and the outer circumference protects the screws inside the concave shape. The screws will not protrude from the highest point of the muffler cover's shoulder, thus eliminating any risk of impact to the top cover. Figure 4 As shown.

[0039] The muffler is secured in the exhaust muffler chamber of the cylinder by screws. The muffler cover is fixed to the cylinder seat via a concentric positioning mechanism, allowing it to impact the upper cover and thus providing upper and lower positioning for the movement. Figure 5As shown, it is directly used for upper and lower limit positioning, so the highest limit point of the cylinder head can be eliminated, and the overall height of the machine can be reduced by about 10-20mm. This concave muffler cover makes full use of the shoulder space of the concave design, increasing the volume by about 20%-30% compared to the convex muffler cover; at the same time, due to the limiting space extending upwards from the housing, the overall height of the muffler cover can be increased. With the increase in height, the volume can even increase by more than 50%, improving the compressor's start-up and noise levels.

[0040] Because the side shoulder of the muffler cover has a large area, an opening can be made here to connect the coil. Therefore, there is no need to design a bending radius (R-curve) at the connection between the coil and the muffler cover, which reduces the design difficulty and breakage risk of the coil. Figure 3 As shown.

[0041] In summary, by employing the above-mentioned technical solution of this invention, the mounting surface of the stator is designed as a recessed structure, and a conical compression spring with a small head and a large bottom is used in conjunction with it. This lowers the mounting base of the support system, resulting in a more rational axial stiffness distribution of the compression spring, significantly enhanced anti-instability capability, and a compact match between the spring head and the recessed concave surface. This achieves the comprehensive optimization goals of effectively reducing the overall height of the compressor within a limited space, improving support stability and operational reliability, and avoiding the impact of structural modifications on the electromagnetic efficiency of the motor. Furthermore, the concave structure of the muffler cover further reduces the overall height of the compressor by 20-30mm.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A support structure for reducing the height of a compressor, characterized in that, Includes a stator (1), the stator (1) having a mounting surface (3) for mounting stator screws (2), the mounting surface (3) being recessed relative to the stator end face on the same side; the recessed mounting surface (3) engaging with one end of an elastic support member, the other end of which engaging with a support portion of the compressor.

2. The support structure for reducing compressor height according to claim 1, characterized in that, The mounting surface is a concave surface, and the distance between the concave surface and the stator end face is 10mm~20mm.

3. The support structure for reducing compressor height according to claim 1, characterized in that, The elastic support is a conical compression spring (4), and the outer diameter of the conical compression spring (4) varies along the axial direction.

4. The support structure for reducing compressor height according to claim 3, characterized in that, The conical compression spring (4) includes a head clamping ring, a bottom clamping ring, and an intermediate free ring located between the two; the outer diameter of the head clamping ring is smaller than the outer diameter of the bottom clamping ring.

5. The support structure for reducing compressor height according to claim 4, characterized in that, The intermediate free ring has a conical structure with a uniformly varying cone angle, which allows the intermediate free rings to be nested layer by layer when under pressure.

6. The support structure for reducing compressor height according to claim 4, characterized in that, Includes a stator screw cap (5) and a support block (6), wherein the stator screw (2) is fixed to the mounting surface (3) by the stator screw cap (5); the bottom of the conical compression spring (4) is in contact with the support block (6), and the head of the conical compression spring (4) is in contact with the stator screw cap (5) to limit the compression stroke of the elastic support.

7. The support structure for reducing compressor height according to claim 6, characterized in that, The support block (6) is fixedly connected to the compressor housing.

8. The support structure for reducing compressor height according to claim 6, characterized in that, The stator screw cap (5) and the support block (6) are both fitted with the tapered compression spring (4).

9. The support structure for reducing compressor height according to claim 6, characterized in that, The stator screw cap (5) is interference-fitted with the stator screw (2).

10. A compressor, characterized in that, The support structure for reducing the height of the compressor as described in any one of claims 1 to 9 further includes an exhaust muffler cover (801), the exhaust muffler cover having a concave center, the exhaust muffler cover being fixed to the exhaust muffler cavity by a muffler cover screw (802), the muffler cover screw (802) being located at the exact center of the concave shape, and the outer end face of the muffler cover screw (802) being located inside the outer end face of the exhaust muffler cover body.

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