Compressor structure for reducing compressor vibration

Abstract

The application relates to the technical field of compressors, and particularly discloses a compressor structure for reducing compressor vibration, which comprises a cylinder seat and a motor stator part fixed to the lower surface of the cylinder seat, and buffer supporting pieces are arranged around the lower surface of the cylinder seat. The motor stator part is composed of a silicon steel stator inner core and a plastic shell wrapped outside the silicon steel stator inner core, the upper surface of the plastic shell is provided with lug seats at both ends, the lug seats are fastened and connected with screw and screw hole mounting seats on the lower surface of the cylinder seat, the connecting support column in the traditional compressor is cancelled, the distance between the supporting surface of the compressor and the center of mass is shortened to within 5 mm, the spring stress is changed from oblique pull to straight pressure, the horizontal displacement of the pump body is greatly inhibited, and the vibration and noise of the whole machine are obviously reduced. The upper surface of the plastic shell is provided with an annular stopper matched with the ring groove of the cylinder seat, so that the lubricating oil is prevented from flowing into the air gap to generate liquid dynamic noise. The backflow lubricating oil flows along the plastic outer wall to dissipate heat, the plastic outer wall is provided with a flow guide groove to improve the heat dissipation capacity, the temperature rise of the motor is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and more specifically, to a compressor structure that reduces compressor vibration. Background Technology

[0002] The connection and support surface between the cylinder seat and the motor of a traditional compressor (such as...) Figure 7 As shown, the cylinder block has multiple support columns, and corresponding holes are drilled in the silicon steel of the motor for fastening with screws. A compression spring is fitted onto the screw head and placed on the housing, thus connecting the cylinder block to the motor and supporting the pump body. In the existing connection method, the support plane is positioned low, far from the center of gravity, resulting in a large overturning moment during compressor operation, which is detrimental to overall noise and vibration. Conventional compressor motor stators are directly exposed, limiting heat dissipation and significantly impacting motor efficiency, thus restricting the overall compressor efficiency. Summary of the Invention

[0003] In view of the above-mentioned technical problems in related technologies, the present invention provides a compressor structure that reduces compressor vibration, which can solve the above problems.

[0004] To achieve the above-mentioned technical objectives, the technical solution of the present invention is implemented as follows: A compressor structure for reducing compressor vibration includes a cylinder base and a motor stator fixed to the lower surface of the cylinder base. Buffer supports are provided around the lower surface of the cylinder base. A screw hole mounting seat is integrally formed on the lower surface of the cylinder base. The motor stator includes a silicon steel stator core and a plastic shell for covering the silicon steel stator core. Ear seats are integrally formed at both ends of the upper surface of the plastic shell. The ear seats are fastened to the screw hole mounting seat by screws.

[0005] Furthermore, an inner hole is provided in the middle of the ear base, and a metal bushing is inlaid inside the inner hole.

[0006] Furthermore, the buffer support includes a rubber head seat, a spring, a metal base, and a support column connected sequentially from top to bottom. The rubber head seat is fixed to the lower surface of the cylinder seat, and the upper and lower ends of the spring are nested and engaged with the rubber head seat and the metal base, respectively. The metal base is fixed to the upper surface of the support column.

[0007] Furthermore, a cable terminal housing is integrally formed on one side of the outer stator of the motor, and stator cables are installed inside the cable terminal housing.

[0008] Furthermore, several guide grooves are vertically formed on the outer surface of the plastic housing of the motor stator.

[0009] Furthermore, the upper surface of the plastic housing of the motor stator is integrally formed with a raised ring, and the lower surface of the cylinder seat is provided with an annular groove that fits into the raised ring.

[0010] The beneficial effects of this invention are: This application directly fixes the motor stator to the lower surface of the cylinder seat and shortens the distance between the cylinder seat support surface and the center of gravity of the whole machine to within 5mm. The distance between the center of gravity of the traditional compressor and the support surface is about 45mm. Compared with the traditional compressor, this significantly reduces the overturning arm generated during operation. At the same time, it reduces the spring force angle, changes the inclined pull to direct pressure, and greatly suppresses the horizontal displacement of the pump body, thereby effectively reducing the vibration and noise of the whole machine and improving the operating stability of the compressor.

[0011] This application adopts an integral injection-molded motor, with the stator completely encased in plastic. The return lubricating oil flowing from the cylinder seat dissipates heat along the outer wall of the motor, allowing the motor heat to be evenly conducted to the outer wall and carried away by the oil, effectively reducing the motor temperature rise. The guide grooves on the outer wall of the plastic shell enhance the heat dissipation path, thereby improving the motor's working efficiency and reliability. Attached Figure Description

[0012] 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.

[0013] The present invention will now be described in further detail with reference to the accompanying drawings.

[0014] Figure 1 This is a front view of the compressor structure; Figure 2 This is a bottom view of the compressor structure; Figure 3 This is a schematic diagram of the stator section of the motor; Figure 4 This is an assembly diagram of the motor stator, rotor, and lower surface of the cylinder base; Figure 5 This is a schematic diagram of the structure of the silicon steel stator core; Figure 6 This is a schematic diagram of the assembly of the silicon steel stator core and the rotor; Figure 7 This is a structural diagram of an existing compressor; Figure 8 This is a comparison diagram of the centroid positions of existing compressors and the compressor of this application.

[0015] In the picture: 1. Cylinder seat; 101. Screw hole mounting seat; 2. Motor stator; 201. Ear seat; 202. Silicon steel stator inner core; 203. Convex ring; 3. Cable terminal shell; 4. Buffer support; 401. Rubber head seat; 402. Spring; 403. Metal base; 404. Support column; 5. Metal bushing; 6. Rotor. Detailed Implementation

[0016] 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.

[0017] Example 1 like Figures 1-8 As shown, the present invention discloses a compressor structure for reducing compressor vibration, including a cylinder seat 1, a motor stator 2 fixed to the lower surface of the cylinder seat 1, and multiple buffer supports 4 disposed around the lower surface of the cylinder seat 1. The lower surface of the cylinder seat 1 is integrally formed with several screw-hole mounting seats 101. The motor stator 2 includes a silicon steel stator core 202 and a plastic shell for covering the silicon steel stator core 202. The upper surface of the plastic shell has symmetrically integrally formed lugs 201 at both ends. The lugs 201 are fastened to the screw-hole mounting seats 101 by screws, thereby directly fixing the motor stator 2 to the lower part of the cylinder seat 1. This connection method eliminates the need for the support structure (such as the one used in traditional compressors to connect the cylinder seat and the motor) in the traditional compressor. Figure 8 As shown in the figure, this causes the center of gravity of the entire compressor to move significantly closer to the supporting plane.

[0018] Furthermore, such as Figure 3 , Figure 4 As shown, the ear seat 201 has an inner hole in the middle, and a metal bushing 5 is installed inside the inner hole. Since the plastic ear seat is easily broken due to compression when the screw is tightened, the metal bushing 5 can effectively withstand the tightening force of the screw, prevent the plastic from cracking, and ensure the reliability of the connection.

[0019] like Figure 1 , Figure 2 As shown, the buffer support 4 includes a rubber head seat 401, a spring 402, a metal base 403, and a support column 404 connected sequentially from top to bottom. The rubber head seat 401 is fixed to the lower surface of the cylinder seat 1. The upper end of the spring 402 is nested with the rubber head seat 401, and the lower end is nested with the metal base 403. The metal base 403 is fixed to the upper surface of the support column 404. The lower end of the support column 404 is connected to the compressor housing base plate. When the compressor is running, the buffer support 4 serves as a support point for the compressor, bearing the vibration load of the entire machine.

[0020] Combination Figure 7 Traditional compressor structure and Figure 8 The center of gravity comparison diagram shows that the distance between the support plane and the center of gravity of a conventional compressor is typically about 45mm. Figure 8In this embodiment, since the motor stator 2 is directly mounted on the lower surface of the cylinder seat 1 and the original support column is removed, the distance between the support plane (i.e., the contact surface between the buffer support 4 and the cylinder seat 1) and the compressor's center of mass is shortened to less than 5mm. Figure 8 (Lower center of mass). On the horizontal projection plane, the horizontal distance between each buffer support 4 and the center of mass remains basically unchanged (assumed to be 40mm), but the overturning force arm is significantly reduced by about 30% from the original combined length (the vector sum of 45mm in the vertical direction and 40mm in the horizontal direction). At the same time, the force angle of spring 402 is reduced from about 48° in the traditional structure to less than 7°. Spring 402 changes from bearing oblique tension to being almost vertically compressed, which significantly restricts the horizontal displacement of the pump body (cylinder seat and motor assembly), thereby greatly reducing the overall vibration and noise of the compressor during operation.

[0021] like Figure 3 As shown, a raised ring 203 is integrally formed on the upper surface of the plastic housing of the motor stator 2, and an annular groove is formed on the lower surface of the cylinder seat 1 to fit into the raised ring 203. When the motor stator 2 is fixed to the cylinder seat 1 by screws, the raised ring 203 is embedded in the annular groove to form an annular stop structure. This stop serves two purposes: firstly, it provides assembly positioning to ensure the coaxiality of the motor stator and the cylinder seat; secondly, when the compressor is working, the lubricating oil inside the cylinder seat 1 may flow downwards along the gap, and the annular stop can effectively prevent the lubricating oil from flowing into the air gap between the motor stator and the rotor, avoiding hydraulic noise and preventing the lubricating oil from contaminating the air gap and affecting the motor performance.

[0022] To further improve the motor's heat dissipation capacity, several vertically spaced drainage grooves (such as...) can be formed on the outer surface of the plastic housing of the motor stator section 2. Figure 1 (As shown). When the compressor is running, the return lubricating oil flowing from the cylinder seat 1 flows evenly down the outer wall of the plastic housing or the guide groove, carrying away the heat generated by the motor stator. Since the integral injection molded motor completely encloses the silicon steel stator core 202, the heat can be evenly conducted to the outer wall of the plastic housing, and then exchanged through the lubricating oil, thereby significantly reducing the motor temperature rise.

[0023] like Figure 1 , Figure 3 As shown, a cable terminal housing 3 is integrally formed on one side of the outer stator section 2 of the motor. The cable terminal housing 3 contains stator cables for connecting to an external power source. The cable terminal housing 3 is integrally injection molded with the plastic outer shell, providing good sealing performance and structural strength.

[0024] In summary, by changing the connection method between the motor stator 2 and the cylinder seat 1, optimizing the relative position of the support plane and the center of mass, and adding annular stops and guide grooves, the vibration and noise of the compressor are effectively reduced, the heat dissipation of the motor is improved, and the overall performance of the machine is enhanced.

[0025] 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 compressor structure for reducing compressor vibration, characterized in that, The device includes a cylinder seat (1) and a motor stator (2) fixed to the lower surface of the cylinder seat (1). Buffer support members (4) are provided around the lower surface of the cylinder seat (1). A screw hole mounting seat (101) is integrally formed on the lower surface of the cylinder seat (1). The motor stator (2) includes a silicon steel stator core (202) and a plastic shell for covering the silicon steel stator core (202). Ear seats (201) are integrally formed at both ends of the upper surface of the plastic shell. The ear seats (201) are fastened to the screw hole mounting seat (101) by screws.

2. The compressor structure for reducing compressor vibration according to claim 1, characterized in that, The ear base (201) has an inner hole in the middle, and a metal bushing (5) is inlaid inside the inner hole.

3. The compressor structure for reducing compressor vibration according to claim 1, characterized in that, The buffer support (4) includes a rubber head seat (401), a spring (402), a metal base (403), and a support column (404) connected from top to bottom. The rubber head seat (401) is fixed to the lower surface of the cylinder seat (1). The upper and lower ends of the spring (402) are nested with the rubber head seat (401) and the metal base (403) respectively. The metal base (403) is fixed to the upper surface of the support column (404).

4. The compressor structure for reducing compressor vibration according to claim 1, characterized in that, The stator part (2) of the motor has an integrally formed cable terminal shell (3) on one side of the outside, and the stator cable is provided inside the cable terminal shell (3).

5. The compressor structure for reducing compressor vibration according to claim 1, characterized in that, The outer surface of the plastic shell of the motor stator (2) has several guide grooves vertically formed.

6. The compressor structure for reducing compressor vibration according to claim 1, characterized in that, The upper surface of the plastic housing of the motor stator (2) is integrally formed with a convex ring (203), and the lower surface of the cylinder seat (1) is provided with an annular groove that fits into the convex ring.

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