Apparatus for refrigeration and / or deep-freezing
By using flat tubular vibration dampers in refrigeration and/or deep-freezing equipment, the problem of compressor vibration transmission is solved, achieving effective vibration isolation and noise reduction, and extending equipment life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GRENIER KITCHEN EQUIP GMBH
- Filing Date
- 2024-11-08
- Publication Date
- 2026-07-24
AI Technical Summary
In existing refrigeration and/or deep-freezing equipment, compressor vibration is transmitted to the base through the mounting legs, resulting in increased equipment noise and damage to parts. Existing vibration dampers cannot effectively dampen vibrations in non-vertical directions.
A flat tubular vibration damper is adopted, including an elastic member and a mounting component. The longitudinal axis of the elastic member is perpendicular to the horizontal direction of the compressor piston, and the lateral part forms a specific angle to enhance the damping effect in the horizontal direction. The asymmetrical cross section and flange design ensure sufficient rigidity and reduce deformation in the vertical direction.
It effectively dampens the horizontal vibration of the compressor, reduces the transmission of vibration to the equipment housing, lowers noise, protects equipment parts, and extends equipment life.
Smart Images
Figure CN122459635A_ABST
Abstract
Description
Technical Field
[0001] The subject of this invention is a refrigeration and / or deep-freezing device equipped with a refrigeration system including a compressor. Background Technology
[0002] Refrigeration and / or deep-freezing equipment is used to store food at temperatures below ambient temperature. To achieve the desired temperature below ambient, refrigeration and / or deep-freezing equipment has an integrated refrigeration system including a compressor. During operation, the compressor generates vibrations, which are transmitted to the base via mounting legs. The compressor is preferably mounted directly on the housing of the refrigeration and / or deep-freezing equipment, which generates vibrations in the housing and other components. These vibrations cause additional noise during operation and damage other parts of the equipment due to material fatigue, resulting in a shortened product lifespan. Therefore, an elastic member acting as a vibration damper is arranged between the compressor (more precisely, the compressor mounting legs) and the base to dampen the compressor's vibrations.
[0003] The vibrations transmitted to the compressor base are primarily a result of the movement of the compressor piston during its operation. In compressors where the piston moves horizontally relative to the base and deviates from the compressor's horizontal central axis, this movement causes axial, radial, and torsional vibrations, which are transmitted to the base to which the compressor is mounted due to the compressor's fixed installation. The horizontal action of the piston results in strong horizontal vibrations in the compressor, which are relatively poorly damped by existing vibration dampers and thus transmitted from the compressor to the equipment housing.
[0004] Conventional vibration dampers installed between the compressor and the base (i.e., the housing of the refrigeration / deep freezing equipment) are elastic components, typically in the form of a solid prism or cylinder, primarily isolating vibrations in the vertical direction perpendicular to the base. This type of vibration damper is capable of damping forces and vibrations in the vertical direction, which are preferably generated during transport, while isolation and damping of vibrations in the non-vertical direction are significantly lower. Summary of the Invention
[0005] Technical issues
[0006] The technical problem is to provide a refrigeration and / or deep-freezing device with an integrated compressor whose vibrations are not transmitted to the housing of the refrigeration and / or deep-freezing device during operation, or are transmitted to the housing of the refrigeration and / or deep-freezing device to a minimum, which would result in a significant reduction in the noise of the refrigeration and / or deep-freezing device during operation.
[0007] Solutions to technical problems
[0008] This technical problem is solved by a device for refrigeration and / or deep freezing, the key features of which are defined in the first independent claim.
[0009] The subject of this invention is a refrigeration and / or deep-freezing device, comprising a housing and a refrigeration system disposed within the housing and configured to achieve a desired temperature within the device. The refrigeration system includes a compressor having a substantially horizontally acting piston and at least two mounting legs. The compressor is mounted to a base, preferably the housing of the device, via the mounting legs. A vibration damper is disposed between the respective mounting legs of the compressor and the base. The vibration damper comprises: an elastic member configured as a flat tubular element and having a bottom side, a top side, and a lateral side, the lateral side extending parallel to the longitudinal axis of the tubular elastic member and connecting the bottom side and the top side; and a mounting member centrally disposed on the top side of the elastic member and integrally formed with it, capable of mounting the vibration damper. During operation of the device, the longitudinal axis of the flat tubular element of the elastic member is perpendicular to the horizontal direction of the operating piston of the compressor, such that the vibration damper dampens horizontal vibrations of the compressor generated by the operation of the compressor piston. The ratio between the thickness D and the width S of the top side is equal to or greater than 1:10.
[0010] The vibration damper includes a flat mounting leg that locks into the bottom side material and restricts the deformation of the top side in the vertical direction.
[0011] The vibration damper includes lateral sides, at least one of which is arranged relative to the top side such that an angle α greater than 0° and less than 180° is formed between them. At least one lateral side may be bent into a concave arch and / or convex arch shape.
[0012] The mounting components, as part of the vibration damper, include a spacer portion and a flange. The cross-section of the spacer portion of the vibration damper is asymmetrical. The vibration damper includes a central through-hole for receiving a fastening member, which extends through both the elastic member and the mounting components during installation.
[0013] The vibration damper is integrally formed and made of an elastic material with sufficient strength and elasticity, preferably synthetic rubber, such as EPDM rubber.
[0014] The refrigeration and / or deep-freezing equipment of the present invention is provided with a refrigeration system that establishes a desired temperature in a food storage compartment. The refrigeration system particularly includes a compressor mounted on a base, typically on the housing of the refrigeration and / or deep-freezing equipment. A vibration damper of the present invention is arranged between the compressor and the base. Due to its tubular design, the vibration damper of the present invention is highly efficient in damping compressor vibrations in the horizontal direction, which is substantially aligned with the operating direction of the compressor piston and where the strongest vibrations occur, while also damping vibrations in the vertical direction caused by the movement of the compressor weight and forces generated during transport of the refrigeration and / or deep-freezing equipment. Because the elastic member of the vibration damper is configured as a flat tubular member, the elasticity of the vibration damper is increased and its rigidity is reduced in the direction of strongest vibration (i.e., the horizontal direction). The vibration damper of the present invention can efficiently dampen the strongest horizontal vibrations of the compressor, which greatly reduces the transmission of vibration from the compressor to the base (i.e., the housing of the refrigeration and / or deep-freezing equipment) and further to other parts within the equipment. In the event of strong instantaneous forces, particularly vertical forces, during the transport of refrigeration and / or deep-freezing equipment, the vibration damper of the present invention ensures sufficient rigidity, which prevents its permanent deformation and / or damage. Attached Figure Description
[0015] The refrigeration and / or deep-freezing apparatus of the present invention will now be described in more detail with reference to embodiments and accompanying drawings, wherein...
[0016] Figure 1 A schematic diagram of a refrigeration and / or deep-freezing device equipped with a refrigeration system.
[0017] Figure 2 A schematic diagram of a compressor integrated into a refrigeration and / or deep-freezing device.
[0018] Figure 3 Vibration damper. Detailed Implementation
[0019] The refrigeration and / or deep-freezing device 100 includes a housing 18, the sides, base, and cover sides of which define storage spaces intended for storing food. The housing is closed from the front by a door (not shown). For operation of the device, the housing 18 houses a refrigeration system 19 including a compressor 1. The compressor 1 is typically arranged in the bottom portion of the refrigeration and / or deep-freezing device and mounted on a base 3 having mounting legs 2, the base 3 preferably being the housing of the refrigeration and / or deep-freezing device. The basic working element of the compressor 1 is a piston arranged in a cylinder and having a piston rod that compresses fluid in the refrigeration system to the desired pressure. The piston in the compressor 1 moves horizontally relative to the base 3 and deviates from the horizontal central axis of the compressor. This movement causes axial, radial, and torsional vibrations in the compressor, which are transmitted to the base 3 to which it is mounted due to the fixed mounting of the compressor. The compressor 1 has two or more fixed mounting legs 2 in a section near the base 3, the fixed mounting legs 2 being intended for mounting on the base 3. In order to reduce the transmission of vibration from compressor 1 to base 3, the vibration damper 4 of the present invention is arranged between compressor 1 and base 3 (i.e., housing 18 of refrigeration and / or deep freezing equipment).
[0020] The vibration damper 4 of the compressor of the refrigeration and / or deep-freezing equipment includes an elastic member 5 and a mounting member 6. The elastic member 5 dampens compressor vibrations so that these vibrations are not transmitted to the base 3 or are transmitted with a relatively low oscillation amplitude. The mounting member 6 is used to mount the vibration damper 4 to the mounting leg 2 of the compressor. The elastic member 5 and the mounting member 6 are material-locked to each other to form an integral component.
[0021] The elastic member 5 is configured as a flat tubular member 7 having a bottom side 8 and a top side 9 parallel to each other, and lateral sides 11 and 12 extending parallel to the longitudinal axis of the tubular elastic member 5 and connecting the bottom side 8 and the top side 9. The top side 9 acts as a vibrating elastic diaphragm. The bottom side 8 and the top side 9 have equal or different lengths, with the bottom side 8 preferably shorter than the top side 9. The lateral sides 11 and 12 are parallel to each other and arranged relative to the top side 9 such that at least one lateral side 11 or 12 forms an angle greater than 0° and less than 180° with the top side 9. The lateral sides 11 and 12 may also be bent into a concave arch and / or a convex arch shape. In this embodiment, the lateral sides 11 and 12 are inclined toward each other and form an angle α greater than 0° and less than 90° with the top side 9. The lateral sides 11 and 12 are bent into a concave arch shape. The elasticity of the elastic member 5 in the horizontal direction varies according to the tilt angle of the lateral sides 11 and 12 toward the bottom side 8 and the top side 9. When the lateral sides 11 and 12 are parallel to each other, the elasticity of the elastic member 5 is highest when the tilt angle is 90°, and the elasticity decreases according to the tilt angle of the lateral sides 11 and 12. The bottom surface 81 of the bottom side 8 is materially locked to the flat leg 10, and the vibration damper 4 is arranged on the base 3 using the flat leg 10, which is preferably the housing 18 of a refrigeration and / or deep freezing device.
[0022] The mounting component 6 is materially locked to the elastic member 5 and centrally positioned on the top surface 91 of the top side 9 of the elastic member 5. The vibration damper 4 is mounted to the mounting leg 2 of the compressor 1 by means of the mounting component 6. The mounting component 6 includes a spacer portion 13 with a flange 14. In its cross-section, the spacer portion 13 corresponds to a through mounting hole 15 of the compressor's mounting leg 2, into which the spacer portion 13 is inserted when the vibration damper 4 is installed. The height of the spacer portion 13 corresponds to the thickness of the compressor's mounting leg 2. The flange 14, pushed through the mounting hole 15 of the mounting leg when the vibration damper 4 is installed, acts as an elastic washer for the compressor's fastening element 16.
[0023] For installation purposes, a vibration damper 4 is disposed between the base 3 and the compressor 1, having a central through-hole 17 for receiving a fastening element 16, the through-hole 17 extending through both the elastic member 5 and the mounting member 6. The vibration damper 4 is inserted into the mounting leg 2 of the compressor such that the longitudinal axis of the tubular elastic member 5 is substantially perpendicular to the direction of the compressor piston action. To ensure proper installation of the vibration damper 4 in the mounting leg 2 of the compressor, the cross-section of the spacer portion 13 of the vibration damper and the mounting hole 15 of the mounting leg of the compressor are configured asymmetrically and complementaryly.
[0024] The tubular design of the elastic member 5 results in the vibration damper 4 having lower rigidity and higher elasticity in the direction of highest vibration of the compressor, i.e., in the horizontal direction perpendicular to the longitudinal axis of the tubular elastic member 5. The vertical vibration of the compressor causes the elastic diaphragm 9 to deform in the direction perpendicular to the flat leg 10, but the diaphragm does not contact the flat leg 10. The deformation of the elastic diaphragm 9 increases linearly as a function of the vibration amplitude in the vertical direction, thus ensuring linear damping of the vibration in the vertical direction. To provide sufficient elasticity for the elastic diaphragm 9, the ratio of its thickness D to its width S is important and should be equal to or greater than 1:10. Under unexpected large forces, such as during transportation, the elastic diaphragm 9 becomes significantly more deformed in the vertical direction, thus contacting the flat leg 10. This prevents further deformation of the elastic diaphragm 9, as well as further permanent deformation or even damage. Because the elastic diaphragm 9 is in contact with the flat leg 10, further deformation is prevented or almost prevented, thus achieving a certain degree of rigidity for the elastic member 5.
[0025] The tubular design of the vibration damper 4, with its arched and / or bent lateral sides 11, 12 tilting towards each other, increases elasticity and simultaneously reduces the rigidity of the elastic member 5 in the horizontal direction, which coincides with the horizontal direction of the compressor's piston action and is perpendicular to the longitudinal axis of the tubular elastic member 5. This direction coincides with the direction of the highest horizontal vibration of the compressor 1. The increased elasticity results in increased vibration damping, thereby reducing the transmission of vibration from the compressor 1 to the base 3. Due to the tubular design of the elastic member 5, the elastic member 5 remains rigid and inelastic in the direction parallel to the longitudinal axis.
[0026] The vibration damper 4 is integrally formed and made of an elastic material with sufficient strength and elasticity, preferably synthetic rubber, such as EPDM rubber.
Claims
1. A refrigeration and / or deep-freezing device (100) comprising a housing (18) and a refrigeration system (19) disposed within the housing (18) and configured to achieve a desired temperature within the device, the refrigeration system (19) comprising a compressor (1) having a substantially horizontally acting piston and at least two mounting legs (2), the compressor (1) being mounted to a base (3) via the mounting legs (2), the base (3) preferably being the housing of the device, and a vibration damper (4) disposed between the respective mounting legs (2) of the compressor and the base (3). Its features are, The vibration damper (4) includes The elastic member (5) is configured as a flat tubular member (7) and has a bottom side (8), a top side (9) and lateral sides (11, 12), the lateral sides (11, 12) extending parallel to the longitudinal axis of the tubular elastic member (5) and connecting the bottom side (8) and the top side (9). Mounting component (6), which is centrally located on the top side (9) of the elastic member and is integrally formed with it and is capable of mounting a vibration damper. During operation of the device (100), the longitudinal axis of the flat tubular element (7) of the elastic member (5) is perpendicular to the horizontal direction of the operating piston of the compressor (1).
2. The refrigeration and / or deep-freezing apparatus according to claim 1, characterized in that, The ratio between the thickness (D) and width (S) of the top side (9) is equal to or greater than 1:
10.
3. The refrigeration and / or deep-freezing apparatus according to any one of the preceding claims, characterized in that, The vibration damper (4) includes a flat leg (10) that locks with the material of the bottom side (8) and restricts the deformation of the top side (9) in the vertical direction.
4. The refrigeration and / or deep-freezing apparatus according to any one of the preceding claims, characterized in that, At least one lateral side (11, 12) is arranged relative to the top side (9) to form an angle (α) greater than 0° and less than 180° between them.
5. The refrigeration and / or deep-freezing apparatus according to any one of the preceding claims, characterized in that, At least one lateral side (11, 12) is curved in a concave arch shape.
6. The refrigeration and / or deep-freezing apparatus according to any one of the preceding claims, characterized in that, At least one lateral side (11, 12) is curved in the form of a convex arch.
7. The refrigeration and / or deep-freezing apparatus according to claim 1, characterized in that, The mounting component (6) includes a spacer portion (13) having a flange (14).
8. The refrigeration and / or deep-freezing apparatus according to claim 7, characterized in that, The spacer portion (13) of the vibration damper is configured to have an asymmetrical cross-section.
9. The refrigeration and / or deep-freezing apparatus according to claim 1, characterized in that, The vibration damper (4) includes a central through hole (17) for receiving a fastening member (16) that extends through both the elastic member (5) and the mounting member (6) during installation.
10. The refrigeration and / or deep-freezing apparatus according to any one of the preceding claims, characterized in that, The vibration damper is integrally formed and made of an elastic material with sufficient strength and elasticity, preferably synthetic rubber, such as EPDM rubber.