WO2008132245A1

WO2008132245A1 - A compressor

Info

Publication number: WO2008132245A1
Application number: PCT/EP2008/055399
Authority: WO
Inventors: Husnu Kerpicci; Tolga Kurtulus
Original assignee: Arcelik Anonim Sirketi
Priority date: 2007-05-01
Filing date: 2008-05-01
Publication date: 2008-11-06

Abstract

The present invention relates to a compressor (1) that is balanced against horizontal vibrations wherein the transmittance of the vibration and noise created during operation to the outside is reduced. The compressor (1) of the present invention comprises two magnets (5, 105) with magnetic properties, disposed oppositely, such that the like poles face each other for connecting the motor (2) to the casing (3) so that vibrations created during operation are at least partially attenuated and at least one prohibitor (6) that at least partially surrounds a magnet pair (5, 105) and attenuates the horizontal movement of the magnets (5, 105).

Description

A COMPRESSOR

[0001] The present invention relates to a compressor that comprises an attenuation device.

[0002] As is known, the compressors are utilized for increasing the pressure of the sucked in fluid and pumping outside by means of the kinetic energy received from an electric motor. The compressors have a wide range of utilization in very different fields due to this attribute. For example in cooling devices, the fluid that is circulated in the refrigeration cycle is activated by means of a compressor.

[0003] In the state of the art, the motor block is attached to the compressor casing by means of springs and thus the vibrations that occur during operation are tried to be attenuated. However, the springs that are secured from one end to the motor and to the casing from the other end result in a large amount of the created vibration and noise to be transmitted to the casing and to the outside from there. Various implementations have been developed in the technique for solving this problem.

[0004] One of the embodiments in state of the art is the vibration attenuation device explained in the Japanese Patent Application No JP7054916. This device is composed of a rubber beam disposed between surfaces to be attenuated and of magnets disposed around this beam such that the like poles face each other.

[0005] In this embodiment known in the technique, besides a means that rigidly attaches the surfaces wherein vibration attenuation will be maintained, magnet pairs with like poles facing each other are used to increase the attenuation effect.

[0006] The aim of the present invention is the realization of a compressor wherein the transmittance of the vibration created during operation is minimized.

[0007] The cooling device realized in order to attain the aim of the present invention is explicated in the claims.

[0008] In the said compressor, the motor is connected to the casing by at least one attenuation device having two magnets positioned oppositely such that the like poles face each other, serving as a spring between the casing and the motor but not forming a rigid connection that will transmit the vibration.

[0009] Thus the vibration in the vertical direction created in the motor during operation is attenuated, minimizing the transmittance of vibration and noise to the outside.

[0010] The attenuation device furthermore comprises at least one prohibitor that maintains balancing of the motor against the vibrations in the radial direction created in the motor. The prohibitor is disposed between the motor and the casing such that the magnet pair is at least partially surrounded.

[0011] In an embodiment of the present invention, the prohibitor is configured like an elastomer ring. In this embodiment, the magnets are disposed inside the prohibitor with a gap therebetween.

[0012] In another embodiment of the present invention, the prohibitor is configured as a cylinder. The cylinder is positioned such that one of the magnets is entirely surrounded and the other magnet partially. Thus the vibrations created in the motor in the vertical direction are attenuated before reaching the casing and the loss of balance due to horizontal vibrations is prevented.

[0013] In another embodiment of the present invention, the attenuation device is shaped as a cylinder and comprises at least two prohibitors placed one inside the other, with the inner and outer surfaces having magnetic properties and such that the identical polar surfaces face each other. The magnets are positioned to remain at least partially inside the prohibitors.

[0014] In an embodiment of the present invention, the attenuation device remains at least partially in the oil collected at the base of the casing such that a thin oil film is formed in the gap between the magnets. The dampening effect of the oil film also reduces vibration transmittance. In a version of this embodiment, at least one hole is bored on at least one magnet. Thus, the adverse effects due to compression of oil between the magnets and leading to increase in pressure are prevented.

[0015] By means of the present invention, a compressor that is balanced against vertical vibrations is provided wherein the transmittance of the vibrations and noise generated during the operation to the outside is reduced. [0016] The compressor realized in order to attain the aim of the present invention is illustrated in the attached figures, where: [0017] Figure 1 - is the exploded front view of the compressor in the present invention. [0018] Figure 2 - is the exploded view of the attenuation device used in an embodiment of the present invention. [0019] Figure 3 - is the perspective view of the casing connector used in another embodiment of the present invention. [0020] Figure 4 - is the perspective view of the magnet used in another embodiment of the present invention. [0021] Figure 5 - is the schematic view of the attenuation device used in an embodiment of the present invention. [0022] Figure 6 - is the schematic view of the attenuation device used in yet another embodiment of the present invention. [0023] Figure 7 - is the schematic view of the attenuation device used in a yet another embodiment of the present invention. [0024] Figure 8 - is the exploded view of the attenuation device used in another embodiment of the present invention. [0025] The elements illustrated in the figures are numbered as follows:

1. Compressor

2. Motor

3. Casing

4. Attenuation means

5. ,105. Magnet

6. Prohibitor

7. Motor connector

8. Casing connector

9. Hole

10. Latch

11. Pin

12. Housing

[0026] The compressor (1) of the present invention comprises: - a motor (2),

- a casing (3) that guards the motor (2) contained therein from external influences,

- at least one attenuation device (4) having at least two magnets (5, 105), disposed oppositely, one on the motor (2) and the other on the casing (3) such that the like poles face each other thus attenuating the vibrations in the vertical direction (Figure 1 and Figure 2).

[0027] The magnets (5, 105) function as springs, repelling each other by being placed like poles facing each other, but not forming a rigid connection between the casing (3) and the motor (2) to transmit vibration. Accordingly, while the vibration of the motor (2) in the vertical direction is attenuated, the transmittance of the vibration and noise to the casing (3) and thus to the outside is minimized.

[0028] The attenuation device (4) furthermore comprises a prohibitor (6) that at least partially surrounds a magnet pair (5, 105) and limits the horizontal movements of the magnets (5, 105). Thus, the balance of the motor (2) is protected against the vibrations created in the motor (2) in the radial direction particularly during reciprocation of the piston (Figure 2).

[0029] In an embodiment of the present invention, the prohibitor (6) is configured like a ring wherein at least one magnet (5) is disposed with a gap remaining between the other magnet (105). In this embodiment of the present invention, the movement of the magnets (5, 105) in the horizontal direction is prevented by their bearing against the surrounding prohibitor (6). The prohibitor (6) used in this embodiment, is preferably produced of an elastomer like material having attenuation properties (Figure 2).

[0030] In another embodiment of the present invention, the prohibitor (6) is configured like a cylinder that entirely surrounds one magnet (5,105) and at least partially the other magnet (5,105) (Figure 5, Figure 6 and Figure

7).

[0031] In another embodiment of the present invention, the attenuation device (4) comprises at least two ring shaped prohibitors (6) having magnetic properties, disposed one within the other, partially surrounding the magnets (5, 105) such that movement in the horizontal direction is prohibited. The outer and inner surfaces of the prohibitors (6) exhibit magnetic properties with surfaces having like poles facing each other. In this embodiment of the present invention, the prohibitor (6) functions like a spring that attenuates and even prohibits the horizontal movement (Figure

7).

[0032] In an embodiment of the present invention, the attenuation device (4) comprises a motor connector (7) for connecting the first magnet (5) to the motor (2) and the second magnet (105) comprises a casing connector (8) for connecting thereof to the casing (3) (Figure 5 and Figure 6).

[0033] In the preferred embodiment of the present invention, the motor (2) is seated on four attenuation devices (4). The motor connectors (7) are configured like a stepped chair whereon the motor (2) can be seated. The base of the casing (3) is shaped to form recesses and protrusions whereto the casing connectors (8) will be disposed. The casing connectors (8) are configured like cylinders having an open base and ceiling and are seated on these recesses and protrusions.

[0034] In a version of this embodiment, the first magnet (5) comprises a slot (12) for attaching to the motor connector (7). The motor connector (7) comprises a pin (11) the end of which is snap-fitted in the slot (12). Accordingly, ease of production and assembly is provided (Figure 8).

[0035] In a version of this embodiment, the second magnet (105) is disc shaped with a diameter allowing to be fitted inside the casing connector (8). The magnet (105) is equipped with latches (10) extending inwards from the upper side thereof so that displacement from the casing connector (8) is prevented (Figure 3).

[0036] In an embodiment of the present invention, the attenuation device (4) remains at least partially in the oil collected at the base of the casing (3). In this embodiment, a thin oil film is formed in the gap between the magnets (5, 105) due to the oily medium. In a version of this embodiment, at least one hole (9) is bored on at least one magnet (5, 105) aiming to prevent the adverse effects due to compression of oil between the magnets (5, 105) by sudden load and movements and thereby resulting in an increase of the pressure (Figure 4). By means of the attenuation device (4) used in the compressor (1) of the present invention, the vibrations and noise generated in the motor (2) during operation is effectively attenuated thus reducing the transmittance to the casing (3) and to the outside.

Claims

1. A compressor (1) that comprises: - a motor (2), - a casing (3) that guards the motor (2) contained therein from external influences, - at least one attenuation device (4) having at least two magnets (5, 105) with magnetic properties, disposed oppositely, one on the motor (2) and the other on the casing (3) such that the like poles face each other thus attenuating the vibrations in the vertical direction, - and characterized by an attenuation device (4) that comprises a prohibitor (6) which at least partially surrounds a magnet pair (5, 105) and limits the horizontal movements of the magnets (5, 105).

2. A compressor (1) as in Claim 1 , characterized by a ring shaped prohibitor (6) wherein at least one magnet (5) is disposed with a gap remaining between the other magnet (105).

3. A compressor (1) as in Claim 1 or 2, characterized by a prohibitor (6) that is produced of a resilient material such as elastomer.

4. A compressor (1) as in Claim 1 , characterized by a cylinder shaped prohibitor (6) that entirely surrounds one magnet (5) and partially surrounds the other magnet (105).

5. A compressor (1) as in Claim 1 , characterized by at least two prohibitors (6), with the outer and inner surfaces having magnetic properties, disposed one within the other such that the surfaces with like poles face each other and prohibit movement in the horizontal direction.

6. A compressor (1) as in any one of the above claims, characterized by an attenuation device (4) that remains at least partially in the oil collected at the base of the casing (3) and magnets (5, 105) with at least one hole (9) bored on at least one of them aiming to prevent the adverse effects due to compression of oil therebetween by sudden load and movements and resulting in an increase of the pressure.