Suspension vibration reduction structure for refrigeration compressor

Abstract

The utility model discloses a suspension vibration damping structure for a refrigeration compressor, which comprises a bottom frame, the bottom frame comprises a lower frame body and ground foot parts arranged at the two ends of the lower frame body, a top frame is arranged in the middle of the lower frame body, and the top frame comprises an upper frame body arranged in the middle of the lower frame body and bending connecting parts arranged at the two ends of the upper frame body. A new suspension vibration damper is formed through the bottom frame and the top frame which are welded together and used in a refrigerator compressor, a compressor core is installed in a compressor shell, the functions of two compression springs are combined into one, the original design that multiple compression spring suspension high-degree-of-freedom parts are designed is replaced through the optimal design of the structure, the number of the parts is reduced from 12 to 2, and the structure is simple and convenient. Mounting parts of stator screws are greatly reduced, and meanwhile, the use of bottom plastic supporting blocks is also reduced; particularly, when the compressor runs at a low speed, the vibration acceleration of the whole machine is reduced from 0.62 m / s < 2 > to 0.36 m / s < 2 > and is optimized by 41.9%, the effect is good, and the vibration of the compressor running at the low speed is well improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigerator compressors, and in particular relates to a suspension vibration reduction structure for a refrigeration compressor. Background Art

[0002] Refrigeration appliances such as household refrigerators and small freezers mostly use piston compressors for refrigeration. With the continuous development of compressor technology, piston compressors continue to upgrade and iterate, gradually moving towards frequency conversion. The notable features of frequency conversion compressors are a wide refrigeration range and suitability for multiple speeds. The vibration of the core system of the compressor's mechanical operation is attenuated through the suspension system and then transmitted to the compressor housing and machine feet, and then connected to the box through the foot pads, and finally transmitted to the refrigeration system.

[0003] Due to the multiple speeds of the variable frequency compressor and the various vibrations of the operating core system under different working conditions, new challenges are posed to the vibration attenuation of the compressor's suspension system under multiple working conditions.

[0004] In the vertical direction, the vibration attenuation mainly depends on the spring itself, and the vibration attenuation in other directions depends on the exhaust coil (connecting the movement and the shell), which can be regarded as a special-shaped spring that plays a vibration attenuation role. Each compression spring is assembled and connected separately, with a high degree of freedom. The position is affected by the reference positioning deviation, which may cause the movement body to be unstable when installed, causing a worse impact during operation.

[0005] When the variable frequency compressor is running at low speed, the rotational inertia is reduced, which reduces the rotational torque, causing the compressor movement to be affected by the exhaust reaction force, and the movement swing amplitude becomes larger. In addition, the exhaust coil is not stiff enough (the exhaust coil is too stiff and prone to breakage), and the four compression springs are independent of each other, which does not suppress the movement shaking enough, resulting in excessive vibration, which is transmitted to the box through the shell and the machine foot connection, causing abnormal noise. In worse cases, the movement may hit the shell, causing abnormal noise at low speed and complaints about product quality issues.

[0006] The existing suspension vibration reduction structure system consists of 12 parts, including 4 springs, 4 bottom support blocks and 4 bolt connection blocks. There are quality problems with welding positioning accuracy and multiple assembly processes, which pose risks to the stable operation of the compressor. Summary of the invention

[0007] The utility model aims to solve the problems existing in the prior art and provides a suspension vibration reduction structure for a refrigeration compressor.

[0008] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a suspension vibration reduction structure for a refrigeration compressor, including a base frame, the base frame includes a lower frame body and ground anchors arranged at both ends of the lower frame body, a top frame is arranged in the middle of the lower frame body, the top frame includes an upper frame body arranged in the middle of the lower frame body and bent connecting parts arranged at both ends of the upper frame body.

[0009] By welding the bottom frame and the top frame together, the functions of the two compression springs are combined into one, and the suspension shock absorption is redesigned to reduce the degree of freedom, thereby making the installation of the compressor movement more stable; since only two suspension shock absorption structures are now needed, the suspension shock absorption structure can significantly suppress the shaking of the compressor movement when the compressor movement is running, effectively reducing the vibration, thereby reducing the noise generated, and greatly reducing the degree to which the compressor movement may hit the compressor casing, thereby minimizing the abnormal noise caused by low-speed impact and reducing the probability of complaints about product quality problems; in addition, using the technical solution provided in the present application, only two suspension shock absorption structures are needed for the installation of the entire suspension shock absorption set. Compared with the original suspension shock absorption structure that requires 4 sets of compression springs, the use of springs, bottom support blocks, and top bolt connectors is greatly reduced, and the number of parts used is reduced from the original 12 to 2, which greatly simplifies the assembly process, not only improves work efficiency, but also reduces welding positioning accuracy and quality problems caused by multiple assembly processes, thereby reducing the risk of stable operation of the compressor.

[0010] Optionally, the lower frame and the foot portion are formed as a whole, and the lower frame is an arc-shaped structure protruding along a third direction.

[0011] By adopting the above technology, the lower frame provides conditions for deformation along the first direction and the third direction, and then absorbs the vibration generated when the compressor movement is running after the deformation occurs.

[0012] Optionally, the foot portion includes a torsion portion having one end connected to the lower frame body, the two torsion portions are bent in opposite phases along a first direction, and the torsion portions are parallel to a horizontal plane.

[0013] Optionally, the lower frame is twisted along the second direction with the connection between the lower frame and the twisting part as the origin.

[0014] Optionally, the foot portion further includes a bent foot portion connected to the other end of the torsion portion, the bent foot portion is in the shape of a ring with a notch when viewed from above, and the bent foot portion is parallel to the horizontal plane.

[0015] It is convenient to install the foot into the compressor housing.

[0016] Optionally, the upper frame body and the bent connecting portion are integrated as a whole, the upper frame body is an arc-shaped structure recessed along a third direction, and an angle b between the contact portion between the upper frame body and the lower frame body is an obtuse angle.

[0017] Through the above design, the upper frame body 21 and the lower frame body 11 can be deformed along the second direction after being vibrated, so as to absorb the vibration.

[0018] Optionally, the upper frame is provided with a bend along the second direction, and an angle c at the bend is between 50° and 65°.

[0019] Through the above technical features, the upper frame body 21 itself can achieve the effect of absorbing vibration by deforming along the second direction.

[0020] Optionally, one end of the upper frame body close to the bent connection portion is bent inward along the center of the upper frame body in the opposite direction of the second direction, and the bent connection portion and the foot portion are located on the same side of the lower frame body.

[0021] Optionally, the bent connection portion is in the shape of a ring with a notch when viewed from above.

[0022] The above features are used to dock with the compressor movement.

[0023] Optionally, the bent connection portion is installed at the base of the movement of the refrigeration compressor by bolts, and the foot portion is installed at the limiting groove of the inner bottom wall of the refrigeration compressor housing.

[0024] Compared with the prior art, the beneficial effects of the utility model are:

[0025] A new suspension vibration reduction is formed by welding the bottom frame and the top frame together, and the functions of the two compression springs are combined into one. Through the optimization design of the structure, the original compression spring suspension high-freedom multi-part design is replaced, and the number of parts is simplified from 12 to 2, which greatly reduces the use of springs, bottom support blocks, and top bolt connectors, and greatly simplifies the assembly process. It not only improves work efficiency, but also reduces welding positioning accuracy and quality problems caused by multiple assembly processes, thereby reducing the risk of stable operation of the compressor; and because only two suspension vibration reduction structures are needed now, the suspension vibration reduction structure can significantly suppress the shaking of the compressor movement when the compressor movement is running, especially when the compressor is running at low speed, the vibration acceleration of the whole machine is reduced from 0.62m / s^ 2 , down to 0.36m / s^ 2 , optimized by 41.9%, with good effect, and greatly improved the vibration of the compressor when running at low speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1This is a structural schematic diagram of a suspension vibration reduction structure for a refrigeration compressor of the utility model;

[0027] Figure 2 It is a side view schematic diagram of a suspension vibration reduction structure for a refrigeration compressor of the utility model;

[0028] Figure 3 This is a three-dimensional schematic diagram of an oblique angle of a suspension vibration reduction structure for a refrigeration compressor of the utility model;

[0029] Figure 4 It is a partial schematic diagram of the assembly effect of a suspension vibration reduction structure for a refrigeration compressor and a compressor housing according to the utility model;

[0030] Figure 5 The utility model is a schematic diagram of the assembly effect of a suspension vibration reduction structure for a refrigeration compressor and a compressor movement.

[0031] In the figure: 1, bottom frame; 11, lower frame body; 12, foot portion; 121, torsion portion; 122, bent foot portion; 2, top frame; 21, upper frame body; 22, bent connection portion; 3, compressor movement; 4, bolt member; 41, stator screw; 42, fastening nut; 5, compressor housing. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the utility model to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "middle", "upper", "lower", "left", "right", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0034] This product is used in the internal movement of the compressor in the household refrigerator to install the compressor movement 3 into the compressor housing 5.

[0035] like Figure 1—3, the specific scheme of the embodiment is as follows: a suspension vibration reduction structure for a refrigeration compressor, including a base frame 1 installed on the bottom foot of the compressor housing 5, the base frame 1 includes a lower frame body 11 and ground anchor portions 12 arranged at both ends of the lower frame body 11, a top frame 2 connected to the compressor movement 3 is welded to the middle part of the lower frame body 11, the top frame 2 includes an upper frame body 21 arranged in the middle part of the lower frame body 11 and bent connection portions 22 arranged at both ends of the upper frame body 21.

[0036] The bent connection portion 22 is installed at the base of the movement of the refrigeration compressor by means of bolts, and the foot portion 12 is installed at the limiting groove of the inner bottom wall of the refrigeration compressor housing.

[0037] By welding the bottom frame and the top frame together, the functions of the two compression springs are combined into one, and the suspension shock absorption is redesigned to reduce the degree of freedom, thereby making the installation of the compressor movement more stable; since only two suspension shock absorption structures are now needed, the suspension shock absorption structure can significantly suppress the shaking of the compressor movement when the compressor movement is running, effectively reducing the vibration, thereby reducing the noise generated, and greatly reducing the degree to which the compressor movement may hit the compressor casing, thereby minimizing the abnormal noise caused by low-speed impact and reducing the probability of complaints about product quality problems; in addition, using the technical solution provided in the present application, only two suspension shock absorption structures are needed for the installation of the entire suspension shock absorption structure. Compared with the original suspension shock absorption structure that requires 4 sets of compression springs, the use of springs, bottom support blocks, and top bolt connectors is greatly reduced, and the number of parts used is reduced from the original 12 to 2, which greatly simplifies the assembly process, not only improves work efficiency, but also reduces welding positioning accuracy and quality problems caused by multiple assembly processes, thereby reducing the risk of stable operation of the compressor.

[0038] In this embodiment, the bottom frame 1 and the top frame 2 are both made of spring steel, so that the entire structure has good elasticity.

[0039] In this embodiment, the first direction is defined as the width direction of the compressor, the second direction is defined as the length direction of the compressor, and the third direction is defined as the height direction of the compressor.

[0040] The lower frame 11 and the foot portion 12 are integrated as a whole. The lower frame 11 is an arc-shaped structure protruding along the third direction, and the center angle of the lower frame 11 is between 35° and 45°.

[0041] The lower frame 11 provides conditions for deformation along the first direction and the third direction, and then absorbs the vibration generated when the compressor movement 3 is running after the deformation occurs.

[0042] In this embodiment, the foot portion 12 includes a torsion portion 121 connected to the lower frame 11 at one end, and the two torsion portions 121 are bent in opposite phases along a first direction, and the torsion portions 121 are parallel to the horizontal plane. The lower frame 11 is twisted along the second direction with the connection between the lower frame 11 and the torsion portion 121 as the origin, and the torsion angle a between the lower frame 11 and the horizontal plane is between 30° and 40°. With this feature, when the lower frame 11 receives vibration, the lower frame 11 can be deformed along the second direction, thereby absorbing part of the vibration.

[0043] In addition, the foot portion 12 further includes a bent foot portion 122 connected to the other end of the torsion portion 121 . The bent foot portion 122 is in a ring shape with a notch when viewed from above, and is parallel to the horizontal plane.

[0044] See also Figure 1-4 During installation, the bent leg portion 122 is inserted into the original limit position of the compressor housing 5.

[0045] See also Figure 1-3 In this embodiment, the upper frame 21 and the bent connecting portion 22 are an integral whole, the upper frame 21 is an arc-shaped structure recessed along the third direction, and the angle b between the upper frame 21 and the lower frame 11 at the contact portion is between 120° and 140°.

[0046] The upper frame 21 and the lower frame 11 can be deformed along the second direction after being vibrated, so as to absorb the vibration.

[0047] The upper frame 21 is provided with a bend along the second direction, and the angle c of the bend is between 50° and 65°. Such a design increases additional deformation space for the upper frame 21.

[0048] Secondly, one end of the upper frame body 21 close to the bent connection portion 22 is bent inwardly along the center of the upper frame body 21 in the opposite direction of the second direction, and the bent connection portion 22 and the foot portion 12 are located on the same side of the lower frame body 11 .

[0049] When the bottom frame 1 and the top frame 2 are vibrated, they can not only be compressed and deformed along the second direction, but also deformed along the first direction and the third direction, absorbing the vibration generated by the operation of the compressor movement 3 from three dimensions, effectively improving the shock absorption effect.

[0050] It should be noted here that the bent connecting portion 22 is in the shape of a ring with a gap when viewed from above, and the inner diameter of the bent connecting portion 22 is between 2 and 3 cm.

[0051] During installation, the bent connecting portion 22 faces the base of the compressor core 3 originally used to install the compression spring, and is fixed by the bolt member 4 .

[0052] The bolt member 4 includes a stator screw 41 originally fixed below the base of the compressor movement 3 , and also includes a fastening nut 42 that is turned on the stator screw 41 .

[0053] Please refer to 3 or Figure 5 During installation, the bent connection portion 22 needs to be inserted into the stator screw 41, and then the fastening nut 42 is screwed in from the bottom end of the stator screw 41 until the fastening nut 42 presses the bent connection portion 22, and then the installation is completed.

[0054] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A suspension vibration reduction structure for a refrigeration compressor, characterized in that: The invention comprises a bottom frame (1), wherein the bottom frame (1) comprises a bottom frame body (11) and footing portions (12) arranged at two ends of the bottom frame body (11); a top frame (2) is arranged in the middle of the bottom frame body (11); the top frame (2) comprises an upper frame body (21) arranged in the middle of the bottom frame body (11) and bent connection portions (22) arranged at two ends of the upper frame body (21).

2. The suspension vibration reduction structure for a refrigeration compressor according to claim 1, characterized in that: The lower frame body (11) and the foot portion (12) are an integral whole; the lower frame body (11) is an arc-shaped structure protruding along a third direction, and the third direction is a vertical direction.

3. The suspension vibration reduction structure for a refrigeration compressor according to claim 1, characterized in that: The foot portion (12) comprises a torsion portion (121) connected to the lower frame body (11) at one end, the two torsion portions (121) being bent in opposite directions along a first direction, the torsion portions (121) being parallel to a horizontal plane, and the first direction being a width direction on the horizontal plane.

4. The suspension vibration reduction structure for a refrigeration compressor according to claim 3 is characterized in that: The lower frame body (11) is twisted along a second direction with the connection between the lower frame body (11) and the twisting portion (121) as an origin, and the second direction refers to a length direction on a horizontal plane.

5. The suspension vibration reduction structure for a refrigeration compressor according to claim 3 is characterized in that: The foot portion (12) further comprises a bent foot portion (122) connected to the other end of the torsion portion (121); the bent foot portion (122) is in the shape of a ring with a notch when viewed from above; the bent foot portion (122) is parallel to the horizontal plane.

6. The suspension vibration reduction structure for a refrigeration compressor according to claim 1, characterized in that: The upper frame body (21) and the bent connection portion (22) are an integral whole; the upper frame body (21) is an arc-shaped structure recessed along a third direction; and an angle b between the upper frame body (21) and the lower frame body (11) at a contact point is an obtuse angle.

7. The suspension vibration reduction structure for a refrigeration compressor according to claim 1, characterized in that: The upper frame (21) is provided with a bend along the second direction, and the angle c at the bend is between 50° and 65°.

8. The suspension vibration reduction structure for a refrigeration compressor according to claim 1, characterized in that: One end of the upper frame body (21) close to the bent connection portion (22) is bent inwardly along the center of the upper frame body (21) in the opposite direction to the second direction, and the bent connection portion (22) and the foot portion (12) are located on the same side of the lower frame body (11).

9. The suspension vibration reduction structure for a refrigeration compressor according to claim 1, characterized in that: The bent connection portion (22) is in the shape of a ring with a gap when viewed from above.

10. The suspension vibration reduction structure for a refrigeration compressor according to claim 1, characterized in that: The bent connection portion (22) is mounted on the base of the movement of the refrigeration compressor by means of bolts, and the foot portion (12) is mounted on the limiting groove of the inner bottom wall of the refrigeration compressor housing.

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