DE102022209292A1 - Vibration damping compound for attachment to at least one vibrating element - Google Patents

Abstract

A vibration damping mass (10) for attachment to at least one vibrating element, in particular to a pipe section (12, 14), comprises at least one mass section (20) and at least one fastening section (22, 24). It is proposed that the vibration damping mass (10) comprises a first fastening section (22) for fastening to a first pipe section (12) and a second fastening section (24) for fastening to a second pipe section (14).

Description

State of the art

The invention relates to a vibration damping mass for attachment to at least one vibrating element according to the preamble of claim 1.

In air conditioning systems, such as heaters, air conditioning systems, heat pumps or refrigerators, certain elements, such as pipe sections, can be caused to vibrate, for example by the operation of pumps or compressors, which generate or amplify sound. This is sometimes perceived as unpleasant by the user. In order to reduce vibrations and oscillations on such elements, vibration damping masses are used, for example, which are also referred to as “mass inhibitors” or “locking masses”. Such a vibration damping mass is attached to a corresponding element or component, whereby its resonance frequency is reduced and the vibration amplitude is reduced.

Disclosure of the invention

The problem on which the invention is based is solved by a vibration damping mass with the features of claim 1. Advantageous further developments are specified in subclaims.

The invention very effectively reduces the vibrations on pipe sections, as typically occur in heaters, air conditioning systems, heat pumps (here especially in a refrigeration circuit) and refrigerators. The vibration damping mass is held reliably because it is held not only on a single pipe section, but on (at least) two pipe sections. In addition, the vibration damping compound according to the invention creates a connection between the two pipe sections, which also contributes to dampening oscillations and vibrations.

Specifically, this is achieved by a vibration damping compound for attachment to at least one vibrating element, in particular to a pipe section, for example of a refrigeration circuit of a heat pump. The vibration damping mass has at least one mass section and at least one fastening section. Typically, the mass section has a significantly higher mass than the attachment section. The actual mass of the mass section can be selected depending on the application in order to achieve the desired vibration damping. For example, the mass section can comprise rubber and/or rubber and/or metal as a material.

The vibration damping mass comprises a first fastening section for fastening to a first pipe section and a second fastening section for fastening to a second pipe section. The two fastening sections can be connected in one piece to the mass section, for example injected into the mass section. However, a positive connection between the fastening sections and the mass section is also possible. The two fastening sections can be made of plastic. As a further alternative, the fastening sections could also be made of rubber (e.g. a very hard EPDM). This means that a vibration damping compound could be made from just one material (e.g. EPDM).

For example, the mass section can be arranged between the two fastening sections. The two fastening sections can protrude from the mass section in the manner of wings or in the manner of side tabs. The pipe sections can be sections of the same pipe, but they can also be sections of different pipes that are close to one another. Through the two fastening sections, the vibration damping mass is securely and stationarily connected to the respective pipe section in such a way that the connection is reliably maintained even when vibrations occur.

In a further development it is provided that at least one fastening section comprises or is designed as an elastic clip section which can be clipped onto the corresponding pipe section. This is a particularly easy-to-assemble design.

In a further development of this, it is provided that the clip section comprises a circular cylindrical shell which, viewed in a circumferential direction, extends over slightly more than 180°, typically over approximately 240°. This ensures a reliable mount and can be manufactured easily and inexpensively.

In a further development of this, it is provided that a projecting longitudinal edge of the circular cylindrical shell has at least one recess into which a nozzle of the pipe section can engage in the operating position. This secures the vibration damping mass in a simple manner in the axial direction of the pipe section.

In a further development of this, it is provided that a longitudinal axis of the first fastening section is parallel to a longitudinal axis of the second fastening section. This allows for easy installation with pipe sections that are parallel to one another.

In a further development it is provided that the two fastening sections are designed in the same direction. “In the same direction” here means that an opening in one fastening section, by means of which the fastening section is pushed onto the pipe section, points at least essentially in the same direction as a corresponding opening in the other pipe section. This makes it possible to place the vibration damping mass onto the two pipe sections from one direction through an at least essentially purely translational movement. In certain installation situations, this has advantages in terms of accessibility and mountability.

In an alternative development, it is provided that the two fastening sections are designed in opposite directions. According to the previous definition, “opposite direction” here means that an opening of one fastening section, by means of which the fastening section is placed on the pipe section, points at least substantially in the opposite direction as a corresponding opening of the other fastening section. This makes it possible to place the vibration damping mass on the two pipe sections by an at least essentially purely rotational movement. This has advantages in other installation situations in terms of accessibility and mountability.

In a further development it is provided that the mass section has an overall cylindrical shape. Such a mass section can be easily manufactured and can easily be placed between adjacent pipe sections. Alternatively, the mass section could also have other shapes, for example rectangular in cross section, oval or similar.

In a further development it is provided that the mass section has a holding section made of a first material and a mass body made of a second material, the second material having a higher density than the first material. This has particular advantages when it is not possible to provide the desired mass using a one-piece element. The holding section could then be made, for example, from the above-mentioned rubber/rubber/plastic, and the mass body, for example, from metal, for example steel, copper or lead. In principle, it is conceivable that the holding section with the fastening sections attached to it is identical for different applications, and only the mass body is adapted to the specific application in terms of shape, mass and / or dimensions. In this case, the vibration damping mass would be one of a set of vibration damping masses with the same holding section but different mass bodies.

In a further development of this, it is provided that the mass body is made of metal and the holding section is made of plastic, and that the mass body is injected into the holding section or is anchored in the holding section by at least one form fit, which also includes holding the mass body in a press fit in the holding section becomes. As a result, the mass body is reliably anchored in the holding section.

• 1 eine perspektivische Darstellung einer ersten Ausführungsform einer Vibrationsdämpfungsmasse, die an zwei Rohrleitungsabschnitten eines Kältekreises einer Wärmepumpe befestigt ist;
• 2 eine perspektivische Darstellung der Vibrationsdämpfungsmasse von 1;
• 3 eine teilweise geschnittene Ansicht von oben auf die Vibrationsdämpfungsmasse und die Rohrleitungsabschnitte von 1 unmittelbar vor der Befestigung;
• 4 eine Darstellung ähnlich zu 3 unmittelbar nach der Befestigung;
• 5 eine perspektivische Darstellung einer zweiten Ausführungsform einer Vibrationsdämpfungsmasse, die an zwei Rohrleitungsabschnitten eines Kältekreises einer Wärmepumpe befestigt ist;
• 6 eine teilweise geschnittene Ansicht von oben auf die Vibrationsdämpfungsmasse und die Rohrleitungsabschnitte von 5 unmittelbar vor der Befestigung;
• 7 eine Darstellung ähnlich zu 6 unmittelbar nach der Befestigung;
• 8 eine perspektivische Darstellung einer dritten Ausführungsform einer Vibrationsdämpfungsmasse vor der Montage eines Massekörpers; und
• 9 eine Darstellung ähnlich zu 8 nach der Montage des Massekörpers.

Embodiments of the invention are explained below with reference to the accompanying drawing. Show in the drawing:

• 1 a perspective view of a first embodiment of a vibration damping mass that is attached to two pipe sections of a refrigeration circuit of a heat pump;
• 2 a perspective view of the vibration damping mass of 1 ;
• 3 a partially sectioned view from above of the vibration damping compound and the pipe sections of 1 immediately before attachment;
• 4 a representation similar to 3 immediately after attachment;
• 5 a perspective view of a second embodiment of a vibration damping compound which is attached to two pipe sections of a refrigeration circuit of a heat pump;
• 6 a partially sectioned view from above of the vibration damping compound and the pipe sections of 5 immediately before attachment;
• 7 a representation similar to 6 immediately after attachment;
• 8th a perspective view of a third embodiment of a vibration damping mass before assembly of a mass body; and
• 9 a representation similar to 8th after assembling the mass body.

Below, functionally equivalent elements and areas have the same reference numbers in different figures and in different embodiments. They are usually only explained in detail when they are first mentioned. In addition, for reasons of clarity, not all reference symbols are entered in all figures in the accompanying drawing.

In 1 A vibration damping mass has the overall reference number 10. In the present case, it is attached to two mutually parallel pipe sections 12 and 14 of a U-shaped bent pipe 16. In the present case, the pipe 16 belongs, for example, to a refrigeration circuit of a heat pump 18. In embodiments not shown, the pipe could be part of a heating system, an air conditioning system, a refrigerator, etc. Typically, the heat pump 18, like the other systems or devices mentioned, includes at least one electrically driven pump and / or an electrically driven compressor, through which elements of the system or device, for example the above-mentioned pipe sections 12 and 14, can be stimulated to oscillate or vibrate.

Like in particular 2 As can be seen, the vibration damping mass 10 comprises a mass section 20, a first fastening section 22 and a second fastening section 24. In an embodiment not shown, a third fastening section could also be present, possibly even further fastening sections, for fastening to further elements and/or pipe sections. In the present case, the mass section 20 is designed as an elongated cylindrical body with a full cross section. For example, it can be made of rubber or rubber or a high-density plastic.

The two fastening sections 20 and 22 are in the present case designed, for example, as elastic clip sections in the form of a circular cylindrical half-shell, which, viewed in a circumferential direction 26, extends over slightly more than 180°, in the present case over an angular range of approximately 240°. In this case, the opening angle is, for example, approximately 120°. In the present case, the fastening sections 20 and 22 are made of plastic, for example. Depending on the elasticity of the selected plastic, the opening angle in other embodiments can also be larger or smaller than 120°. In the present example, the two fastening sections 22 and 24 are injected into the mass section. In an embodiment not shown, the fastening sections could also be anchored to the mass section by a positive fit, for example by pins in the plastic material of the fastening sections, which are anchored in the rubber or caoutchouc material of the mass body.

In the present example, the inner diameter of the circular cylindrical half-shells of the two fastening sections 20 and 22 is the same. In an embodiment not shown, the inside diameters of the two fastening sections are different, so that they can be attached to pipe sections with different outside diameters. It can be seen that each circular cylindrical shell of a fastening section 20 and 22 has two recesses 28 on its projecting longitudinal edge, into which in the in 1 In the operating position shown, there is a connection piece 30 of the in 1 right pipe section 14 can intervene.

At the in the 1-4 In the embodiment of a vibration damping mass 10 shown, the two fastening sections 22 and 24 are designed in opposite directions. This means that an opening 32 of one fastening section 22 at least substantially in the opposite direction (arrow 34 in 3 ) points as a corresponding opening 36 of the other fastening section 24 (arrow 38 in 3 ). You can also see in 3 that a longitudinal axis 40 of the first fastening section 22, a longitudinal axis 42 of the second fastening section 24, and a longitudinal axis 44 of the mass section 20 are essentially parallel.

All of this enables the vibration damping mass 10 to be installed, as can be seen from the 3 and 4 results: accordingly, the vibration damping mass 10 is first arranged with the mass section 20 centrally between the two pipe sections 12 and 14, in such a way that the longitudinal axis 44 of the mass section 20 is essentially parallel to the longitudinal axes (not shown) of the two pipe sections 12 and 14 . Then the vibration damping mass 10 is rotated about the longitudinal axis 44 of the mass section 20 so that the openings 32 and 36 of the fastening sections 22 and 24 move towards a pipe section 12 and 14, respectively. In the present example, this means that the vibration damping mass 10 is rotated clockwise about the longitudinal axis 44.

This rotation is continued until the circular cylindrical half-shells of the two fastening sections 20 and 22 are snapped onto the pipe sections 12 and 14. Here, the half-shell of a pipe section 12 or 14 is first slightly expanded on the projecting longitudinal edge until the opening width of the respective opening 32 or 36 corresponds to the outer diameter of the respective one Pipe section 12 or 14 corresponds. Due to the elasticity of the fastening sections 22 and 24, the opening width is then reduced again. In this respect, the two fastening sections 12 and 14 are elastic clip sections. It can be seen that in the present case the inner diameter of the half-shells of the fastening sections 22 and 24 essentially corresponds exactly to the outer diameter of the corresponding pipe section 12 and 14, respectively. In an embodiment, not shown, with differently designed pipe sections, the inner diameters of the half-shells of the fastening sections could also be different.

The embodiment of the 5-7 differs from that of 1-4 essentially in that the two fastening sections 22 and 24 are not designed in opposite directions, but in the same direction. The openings 32 and 36 thus point in the same direction, corresponding to the arrows 34 and 38 in 6 . So while in the embodiment of 1-4 the vibration damping mass 10 is mounted on the pipe sections 12 and 14 substantially by rotation about the longitudinal axis 44 of the mass section 20, the vibration damping mass 10 of the embodiment of 5-7 essentially attached to the pipe sections 12 and 14 by a translational movement in the direction of arrows 34 and 38.

As already mentioned above, the mass section 20 has, for example, a cylindrical shape in the embodiments described here. While the mass section 20 in the embodiments of 1-7 is made of a solid material, it includes in the embodiment of 8th and 9 a holding section 46 and a mass body 48. The holding section 46 is made of a first material, for example a plastic, a rubber or a rubber. The mass body 48 is made of a second material whose density is significantly greater than the density of the holding section 46. For example, the mass body 48 is made of a metal material, for example steel, copper, lead, or the like.

The holding section 46 is in the present case designed as a hollow cylinder, whereas the mass body 48 in the present case is designed, for example, as a cylindrical bolt. An outer diameter of the mass body 48 corresponds approximately to an inner diameter of the holding section 46. Preferably, the outer diameter of the mass body 48 is slightly larger than the inner diameter of the holding section 46, so that the mass body 48 can be held in a press fit in the holding section 46. However, it is also possible that the mass body 48 is injected into the holding section 46 or is anchored in it by a positive fit.

You can tell from the 8th and 9 that with this embodiment it is possible to produce a set of vibration damping masses which consists of the same fastening sections and holding sections, but different mass bodies. For example, the mass bodies can have a different length or be made from different materials. In this way, the mass of the mass section can be adapted to different applications without the remaining components of the vibration damping mass having to be designed differently.

Claims (10)

Vibration damping mass (10) for attachment to at least one vibrating element, in particular to a pipeline section (12, 14), with at least one mass section (20) and at least one fastening section (22, 24), characterized in that the vibration damping mass (10) has a first Fastening section (22) for fastening to a first pipe section (12) and a second fastening section (24) for fastening to a second pipe section (14). Vibration dampening compound (10). Claim 1 , characterized in that at least one fastening section (22, 24) comprises an elastic clip section which can be clipped onto the corresponding pipe section (12, 14). Vibration dampening compound (10). Claim 2 , characterized in that the clip section (22, 24) comprises a circular cylindrical shell which, viewed in a circumferential direction (26), extends over slightly more than 180°. Vibration dampening compound (10). Claim 3 , characterized in that a projecting longitudinal edge of the circular cylindrical shell (22, 24) has at least one recess (28) into which a nozzle of the pipe section (12, 14) can engage in the operating position. Vibration damping mass (10) according to at least one of Claims 2 - 4 , characterized in that a longitudinal axis (40) of the first fastening section (22) is parallel to a longitudinal axis (42) of the second fastening section (24). Vibration damping mass (10) according to at least one of the preceding claims, characterized in that the two fastening sections (22, 24) are designed in the same direction. Vibration damping mass (10) according to at least one of the preceding Claims 1 - 5 , characterized in that the two fastening sections (22, 24) are designed in opposite directions. Vibration damping mass (10) according to at least one of the preceding claims, characterized in that the mass section (20) has an overall cylindrical shape. Vibration damping mass (10) according to at least one of the preceding claims, characterized in that the mass section (20) has a holding section (46) made of a first material and a mass body (48) made of a second material, the second material having a higher density than the first material. Vibration dampening compound (10). Claim 9 , characterized in that the mass body (48) is made of metal and the holding section (46) is made of plastic, and that the mass body (48) is injected into the holding section (46) or is anchored in the holding section (46) by at least one form fit.

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