EP4686829A1

EP4686829A1 - A compressor comprising a damping member

Info

Publication number: EP4686829A1
Application number: EP25173620.3A
Authority: EP
Inventors: Cihan Gunduz; Serhat Ozturk; Sitki Bicer; Mahmut Karavil; Adem Erkut
Original assignee: Arcelik AS
Current assignee: Arcelik AS
Priority date: 2024-07-29
Filing date: 2025-04-30
Publication date: 2026-02-04

Abstract

The present invention relates to a compressor (1) suitable to be used in cooling devices, comprising a casing (2); a motor group (3) disposed in the casing and having a cylinder (4) which is disposed in the casing (2) and wherein the circulation fluid is compressed, a cylinder head (5) which is disposed on the cylinder (4) and a suction muffler (6) which is suitable for use by being attached to the cylinder head (5) and which provides the damping of the noise generated by the circulation fluid passing therethrough; and a plurality of support springs (7) which are disposed on the casing (2) and which support the motor group (3).

Description

The present invention relates to a compressor suitable for use in cooling devices.
Compressors comprise a casing, a cylinder which is disposed in the casing and which provides the compression of the circulation fluid, a cylinder head which is attached onto the cylinder, and a suction muffler which is attached to the cylinder head and which provides the damping of the noise generated by the circulation fluid. This structure which provides the pressurization of the circulation fluid is called the motor group. The motor group generates vibrations at various frequencies and amplitudes while providing the compression of the circulation fluid. The resulting vibrations are transmitted to the casing via the support springs supporting the motor group, and cause noise generation. Although there are solutions for damping vibrations generated on the casing, these do not work at the desired efficiency and the noise level cannot be reduced to the desired level.
In the state of the art European Patent No. EP3203069B1 , a damping member which is provided on the casing is disclosed.
In the state of the Korean Patent No. KR100406305B1 , a spring is disclosed, which is attached to the upper wall of the casing and which has a mass of certain weight at the end thereof.
The aim of the present invention is the realization of a compressor wherein the vibrations are efficiently damped.
The compressor realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof, is suitable to be used in cooling devices, and comprises a casing; a motor group disposed in the casing and having a cylinder which compresses the circulation fluid therein, a cylinder head which is disposed on the cylinder and a suction muffler which is suitable for use by being attached to the cylinder head and which provides the damping of the noise generated by the circulation fluid passing therethrough; a plurality of support springs which are disposed on the casing and which support the motor group; at least one bracket which is disposed between the motor group and the support spring and which enables the motor group to be attached to the support spring; and at least one flexible damping member which is attached to the bracket from one end with the other end being free and which provides the damping of the vibrations generated by the motor group by making an oscillating movement from the free end thereof. Thus, the vibrations generated by the motor group are damped by the damping member and the vibrations are prevented from being transmitted to the casing. Consequently, the compressor is enabled to be exposed to a reduced vibration level and to operate more quietly.
In an embodiment of the present invention, the damping member is positioned on the upper side of the bracket so as to be on the same side as the motor group. Thus, the damping member is prevented from getting stuck between the casing and the bracket so as to ensure operational safety, and the vibrations generated by the motor group are damped more effectively by the damping member.
In an embodiment of the present invention, on the bracket, there is at least one housing to which the damping member is attached. Thus, the damping member is enabled to be mounted more easily.
In an embodiment of the present invention, the housing is positioned so as to be vertically aligned with the support spring. Thus, the bracket is enabled to effectively balance the spring vibration, and the vibration transmitted to the casing by the spring is greatly reduced.
In an embodiment of the present invention, at least one mass is provided on the damping member. Thus, it becomes possible to adjust the oscillation frequency of the damping member and to adjust the damping member so as to balance the oscillation at frequencies where noise generation is highest during the operation.
In an embodiment of the present invention, the mass weight is configured to be between 1/5 and 10 times the weight of the damping member whereon the same is disposed. Thus, the damping member is enabled to provide effective damping without collapsing.
In an embodiment of the present invention, on the bracket, there are a plurality of housings and a plurality of damping members are attached to the housings. Thus, the vibrations of different amplitudes and in different regions occurring on the motor group are enabled to be damped.
In an embodiment of the present invention, the compressor comprises a plurality of damping members with different lengths. Thus, the vibrations of different frequencies and amplitudes occurring on the motor group are enabled to be damped more effectively.
In an embodiment of the present invention, the mass weight is configured so as to be inversely proportional to the length of the damping member. Thus, the oscillation movement of the damping member in the horizontal direction is enabled to be limited.
In an embodiment of the present invention, the damping member is in the form of a rod. Thus, the damping member is manufactured more easily and cheaply.
In an embodiment of the present invention, the damping member is manufactured from steel cable. Thus, the damping member is enabled to be both sufficiently flexible and sufficiently strong.
In an embodiment of the present invention, the bracket is almost in the form of a boomerang. Thus, the bracket is attached to the motor group from two points and is attached to the support spring from a single point. Thus, the vibrations generated by the motor group are collected on a single point and are damped more effectively at this point by the damping member.
By means of the present invention, the vibrations generated on the compressor are effectively damped.
The compressor realized in order to attain the aim of the present invention is illustrated in the attached figures, where:

Figure 1 - is the perspective view of the compressor related to an embodiment of the present invention.
Figure 2 - is the perspective view of the motor group related to an embodiment of the present invention.
Figure 3 - is the perspective view of the motor group related to another embodiment of the present invention.
Figure 4 - is the perspective view of the bracket related to an embodiment of the present invention.

The elements illustrated in the figures are numbered as follows:

1. Compressor
2. Casing
3. Motor group
4. Cylinder
5. Cylinder head
6. Suction muffler
7. Support spring
8. Bracket
9. Housing
10. Damping member
11. Mass

The compressor (1) is suitable to be used in cooling devices and comprises a casing (2); a motor group (3) disposed in the casing and having a cylinder (4) which is disposed in the casing (2) and wherein the circulation fluid is compressed, a cylinder head (5) which is disposed on the cylinder (4) and a suction muffler (6) which is suitable for use by being attached to the cylinder head (5) and which provides the damping of the noise generated by the circulation fluid passing therethrough; and a plurality of support springs (7) which are disposed on the casing (2) and which support the motor group (3). The motor group (3) is attached to the casing (2) by means of the support springs (7). During the operation of the compressor (1), the refrigerant fluid is taken into the casing (2) by means of an inlet pipe and is compressed and pressurized by means of a piston provided on the motor group (3). At the same time, the vibrations generated on the motor group (3) are transmitted to the casing (2) and from there to the other components by means of the support springs (7).
The compressor (1) of the present invention comprises at least one bracket (8) which is disposed the motor group (3) and the support spring (7) and which enables the motor group (3) to be attached to the support spring (7), and at least one flexible damping member (10) which is attached to the bracket (8) from one end with one end being free and which provides the damping of the vibrations generated by the motor group (3) by making an oscillating movement. The bracket (8) is positioned between the motor group (3) and the support spring (7) and enables the motor group (3) to be supported. The vibrations generated by the motor group (3) are directly transferred to the bracket (8). The damping member (10), which is attached to the bracket (8) from one end, makes an oscillating movement from the free end thereof due to the incoming vibrations and damps and prevents the vibrations from being transmitted to the support spring (7). Thus, the compressor (1) is enabled to operate more silently.
In an embodiment of the present invention, the compressor (1) comprises the damping member (10) which extends on the upper side of the bracket (8) to which the motor group (3) is connected. The damping member (10) is positioned on the upper side of the bracket (8), on the side to which the motor group (3) is connected. Thus, the damping member (10) makes the oscillation movement more easily and enables the vibrations generated by the motor group (3) to be damped more effectively.
In an embodiment of the present invention, the compressor (1) comprises at least one housing (9) which is provided on the bracket (8) and to which the damping member (10) is attached. The damping member (10) is fitted into and fixed in the housing (9) and is enabled to operate safely on the bracket (8). The damping member (10) can be fixed into the housing (9) by the snap-fitting method or by means of fastening members (adhesive, welding, screwing, etc.).
In an embodiment of the present invention, the compressor (1) comprises the housing (9) which is positioned so as to be vertically aligned with the support spring (7). When the housing (9) is positioned vertically aligned with the support spring (7), the damping member (10) can be more easily mounted on the housing (9), providing ease of process. Moreover, production costs are also decreased.
In an embodiment of the present invention, the compressor (1) comprises at least one mass (11) which is provided on the damping member (10). The mass (11) is preferably positioned at the free end of the damping member (10), but can be placed in different areas on the damping member (10) depending on the requirements of the design. The mass (11) enables the damping member (10) to dampen vibrations more effectively. The weight of the mass (11) varies depending on the design parameters.
In an embodiment of the present invention, the compressor (1) comprises the mass (11), the weight of which is configured to be between 1/5 and 10 times the weight of the damping member (10) whereon the same is disposed. When the weight of the mass (11) falls below 1/5 of the weight of the damping member (10) or is more than 10 times, the vibration damping ability of the damping member (10) is not at the desired level. Thus, the weights of the damping member (10) and the mass (11) are kept at an optimum level and the vibrations generated by the motor group (3) are effectively damped.
In an embodiment of the present invention, the compressor (1) comprises a plurality of housings (9) which are provided on the bracket (8) and a plurality of damping members (10) which are attached to the housings (9). The damping members (10) are attached to the bracket (8) with a certain distance therebetween. The plurality of damping members (10) provide more effective damping of vibrations.
In an embodiment of the present invention, the compressor (1) comprises a plurality of damping members (10) with different lengths. The damping members (10) being at different lengths also provides the damping of the vibrations of different amplitudes and frequencies. Thus, more effective damping of vibrations is ensured.
In an embodiment of the present invention, the compressor (1) comprises the masses (11) of which the weights are configured to be inversely proportional to the length of the damping member (10) whereon the same are positioned. As the length of the damping member (10) increases, the weight of the mass (11) which can be placed thereon decreases, or conversely, as the length of the damping member (10) decreases, the weight of the mass (11) which can be placed thereon increases. Since the flexibility of the short damping member (10) is low, a heavier mass (11) can be supported thereon, while a lighter mass (11) is supported on the longer damping member (10). Thus, the damping member (10) is prevented from damaging the motor group (3) or the casing (2) while making a flexing movement, and the safer operation thereof is provided.
In an embodiment of the present invention, the compressor (1) comprises the damping member (10) which is in the form of a rod. The rod form enables the damping member (10) to be mounted more easily to the bracket (8). It is possible to manufacture the damping member (10) in a cylindrical form or other geometric forms. However, due to the ease of production and low process costs, the cylindrical rod form is preferred.
In an embodiment of the present invention, the compressor (1) comprises the damping member (10) which is manufactured from steel cable. When manufactured from steel cable, the damping member (10) can be easily applied and easily provides the desired strength and flexibility. In addition, the damping member (10) manufactured from steel cable has an increased economic life thanks to the durable structure thereof.
In an embodiment of the present invention, the compressor (1) comprises the bracket (8) which is almost in the form of a boomerang. The bracket (8) is connected to the motor group (3) from two points and is attached to the support spring (7) from a single point. Thus, the vibrations generated by the motor group (3) are transmitted less to the casing (2).
By means of the present invention, the vibrations on the compressor (1) are damped such that the noise level is reduced, the vibration-induced wear is prevented, and the economic life of the compressor (1) is increased.

Claims

A compressor (1) suitable to be used in cooling devices, comprising comprises a casing (2); a motor group (3) disposed in the casing and having a cylinder (4) which is disposed in the casing (2) and wherein the circulation fluid is compressed, a cylinder head (5) which is disposed on the cylinder (4) and a suction muffler (6) which is suitable for use by being attached to the cylinder head (5) and which provides the damping of the noise generated by the circulation fluid passing therethrough; and a plurality of support springs (7) which are disposed on the casing (2) and which support the motor group (3), characterized by at least one bracket (8) which is disposed the motor group (3) and the support spring (7) and which enables the motor group (3) to be attached to the support spring (7), and at least one flexible damping member (10) which is attached to the bracket (8) from one end with one end being free and which provides the damping of the vibrations generated by the motor group (3) by making an oscillating movement.
A compressor (1) as in Claim 1, characterized by the damping member (10) which extends on the upper side of the bracket (8) to which the motor group (3) is connected.
A compressor (1) as in Claim 1 or Claim 2, characterized by at least one housing (9) which is provided on the bracket (8) and to which the damping member (10) is attached.
A compressor (1) as in Claim 3, characterized by the housing (9) which is positioned so as to be vertically aligned with the support spring (7).
A compressor (1) as in any one of the above claims, characterized by at least one mass (11) which is provided on the damping member (10).
A compressor (1) as in Claim 5, characterized by the mass (11), the weight of which is configured to be between 1/5 and 10 times the weight of the damping member (10) whereon the same is disposed.
A compressor (1) as in any one of Claims 4 to 6, characterized by a plurality of housings (9) which are provided on the bracket (8) and a plurality of damping members (10) which are attached to the housings (9).
A compressor (1) as in Claim 7, characterized by the damping members (10) which have different lengths.
A compressor (1) as in Claim 8, characterized by the masses (11) of which the weights are configured to be inversely proportional to the length of the damping member (10) whereon the same are positioned.
A compressor (1) as in any one of the above claims, characterized by the damping member (10) which is in the form of a rod.
A compressor (1) as in any one of the above claims, characterized by the damping member (10) which is manufactured from steel cable.
A compressor (1) as in any one of the above claims, characterized by the bracket (8) which is almost in the form of a boomerang.