Dynamic vibration absorber, pipeline assembly and air conditioning equipment

Abstract

The utility model discloses a dynamic vibration absorber, pipeline subassembly and air-conditioning equipment relates to air-conditioning vibration reduction technical field, wherein the dynamic vibration absorber includes elastic deformation block and counter weight piece, elastic deformation block has the opposite two end portion in the first direction, the elastic deformation block is provided with the mounting groove that passes through its two end portion, the counter weight piece is equipped with the counter weight piece, and the counter weight piece is equipped with the mounting groove that passes through its two end portion. A balance weight groove is further formed in one side, in the second direction, of the mounting groove, the balance weight piece is mounted in the balance weight groove, when the pipeline vibrates in the second direction, the elastic deformation block drives the balance weight piece to vibrate in the second direction, the buffering effect of the buffering groove is equivalent to the effect that a spring is arranged between the pipeline and the balance weight piece, and therefore the damping effect is achieved. The installation groove, the buffering groove and the balance weight groove are formed in the elastic deformation block, the structure is simple, the manufacturing process is simple, the machining cost is low, the elastic deformation block is arranged on the pipeline in a sleeving mode, vibration reduction in the second direction can be achieved by directly installing the balance weight piece in the balance weight groove, and installation is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of air-conditioning vibration reduction, in particular to a dynamic vibration absorber, a pipeline component and air-conditioning equipment. Background Art

[0002] The existing air conditioning pipeline vibration reduction is usually achieved by adding a counterweight or anti-vibration rubber to the pipe to reduce the natural frequency of the structure. The dynamic vibration absorber is a device that reduces the target vibration through a counterweight and spring damping system. The dynamic vibration absorber currently used in pipeline systems has a complex structure, high processing cost, and is difficult to install. Utility Model Content

[0003] The main purpose of the utility model is to provide a dynamic vibration absorber, a pipeline assembly and an air conditioning device, aiming to solve the problems of the existing dynamic vibration absorber having an overly complex structure, high processing cost and complicated installation.

[0004] In order to achieve the above-mentioned purpose, the dynamic vibration absorber proposed by the utility model comprises:

[0005] An elastic deformation block, wherein the elastic deformation block has two ends arranged opposite to each other in a first direction, the elastic deformation block is provided with a mounting groove penetrating the two ends thereof, a counterweight groove is further provided on one side of the mounting groove in a second direction, and a buffer groove is provided between the mounting groove and the counterweight groove; and,

[0006] A counterweight is installed in the counterweight slot.

[0007] In one embodiment, a plurality of counterweight slots are provided, and the counterweight member is installed in cooperation with the counterweight slots.

[0008] In one embodiment, the plurality of counterweight grooves are arranged at intervals in the third direction, and the plurality of counterweight grooves are symmetrically arranged about a symmetry axis of the installation groove extending along the second direction.

[0009] In one embodiment, the counterweight member includes a main body installed in the counterweight slot, and a limiting portion exposed outside the counterweight slot, and the limiting portion is arranged to protrude laterally from the main body.

[0010] In one embodiment, the mounting groove is eccentrically arranged relative to the geometric center of the elastic deformation block, toward a side away from the counterweight groove.

[0011] In one embodiment, the installation groove is arranged to laterally penetrate the peripheral side portion of the elastic deformation block to form an installation opening on the peripheral side portion of the elastic deformation block.

[0012] In one embodiment, the mounting opening is arranged on a side of the elastic deformation block in the second direction and away from the counterweight slot.

[0013] In one embodiment, a limiting groove is concavely provided on the circumferential side surface of the elastic deformation block, and the limiting groove extends along the circumferential direction of the elastic deformation block.

[0014] In one embodiment, the counterweight is provided as a metal counterweight.

[0015] The present utility model further provides a pipeline assembly, and the pipeline assembly includes a dynamic vibration absorber, and the dynamic vibration absorber includes:

[0016] An elastic deformation block having two ends oppositely arranged in a first direction, an installation groove penetrating through the two ends is provided on the elastic deformation block, a counterweight groove is further provided on one side of the installation groove in a second direction, and a buffer groove is provided between the installation groove and the counterweight groove; and,

[0017] A counterweight installed in the counterweight groove.

[0018] The present utility model further provides an air conditioner including a pipeline assembly, and the pipeline assembly includes a dynamic vibration absorber, and the dynamic vibration absorber includes:

[0019] An elastic deformation block having two ends oppositely arranged in a first direction, an installation groove penetrating through the two ends is provided on the elastic deformation block, a counterweight groove is further provided on one side of the installation groove in a second direction, and a buffer groove is provided between the installation groove and the counterweight groove; and,

[0020] A counterweight installed in the counterweight groove.

[0021] In the technical solution of the present utility model, the elastic deformation block is installed on a pipeline extending along the first direction through the installation groove, the counterweight is installed in the counterweight groove provided on one side of the installation groove in the second direction, and the buffer groove is provided between the installation groove and the counterweight groove. When the pipeline vibrates in the second direction, the elastic deformation block drives the counterweight to vibrate in the second direction. The buffering effect of the buffer groove is equivalent to setting a spring between the pipeline and the counterweight, thereby achieving a vibration reduction effect. By providing the installation groove, the buffer groove and the counterweight groove on the elastic deformation block, the structure is simple, the manufacturing process is simple, and the processing cost is low. The elastic deformation block is sleeved on the pipeline, and directly installing the counterweight in the counterweight groove can achieve vibration reduction in the second direction, and the installation is simple, so as to solve the problems of the existing dynamic vibration absorber having an overly complex structure, high processing cost, and complex installation. Description of the Drawings

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0023] Figure 1 Schematic diagram of a structure of an embodiment of a dynamic vibration absorber provided by the present invention;

[0024] Figure 2 For Figure 1 Schematic diagram of the elastic deformation block in

[0025] Figure 3 For Figure 1 Schematic diagram of the counterweight in

[0026] Figure 4 Schematic diagram of the dynamic model of the dynamic vibration absorber.

[0027] Explanation of the reference numerals in the drawings:

[0028] 100, dynamic vibration absorber; 1, elastic deformation block; 11, installation groove; 12, counterweight groove; 13, buffer groove; 14, installation port; 15, limiting groove; 20, counterweight; 21, main body part; 22, limiting part.

[0029] The realization, functional features and advantages of the object of the present invention will be further described in conjunction with the embodiments with reference to the drawings. Specific embodiments

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0031] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0032] In addition, if the embodiments of the present utility model involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or inability to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0033] Conventionally, vibration reduction of air-conditioning pipelines is usually achieved by adding counterweights or anti-vibration rubber on the pipes to reduce the natural frequency of the structure, thereby reducing vibration. A dynamic vibration absorber is a device that reduces the target vibration through a counterweight and a spring-damping system. Currently, the dynamic vibration absorbers used in pipeline systems have complex structures, high processing costs, and are difficult to install.

[0034] The present utility model proposes a dynamic vibration absorber to solve the problems of the existing dynamic vibration absorber having an overly complex structure, high processing cost, and complex installation.

[0035] Please refer to Figures 1 to 3 , in an embodiment of the present utility model, the dynamic vibration absorber 100 includes an elastic deformation block 1 and a counterweight member 20. The elastic deformation block 1 has two ends oppositely arranged in a first direction. An installation groove 11 penetrating through its two ends is provided on the elastic deformation block 1. A counterweight groove 12 is further provided on one side of the installation groove 11 in a second direction. A buffer groove 13 is provided between the installation groove 11 and the counterweight groove 12; the counterweight member 20 is installed in the counterweight groove 12.

[0036] It should be noted that the elastic deformation block 1 is a component that can undergo elastic deformation and has two oppositely arranged ends. The elastic deformation block 1 can deform under the action of an external force but can return to its original state when the external force is removed. The elastic deformation block 1 can be made of materials with large elastic properties such as rubber and silica gel.

[0037] The installation groove 11 is used to sleeved the elastic deformation block 1 around the pipeline, and the installation groove 11 enables the elastic deformation block 1 to be conveniently installed on the pipeline that needs vibration reduction.

[0038] The counterweight groove 12 is arranged on a side surface perpendicular to the installation groove 11 (assuming the second direction is the direction perpendicular to the first direction). The counterweight groove 12 is the position for installing the counterweight member 20.

[0039] The buffer groove 13 is arranged in the area between the installation groove 11 and the counterweight groove 12. The buffer groove 13 provides additional deformation space for the elastic deformation block 1, helps absorb vibration energy, and enhances the elastic characteristics of the elastic deformation block 1.

[0040] It should be noted that the first direction is the pipeline extension direction. When the first direction is the up-down direction, the second direction is a certain direction perpendicular to the first direction in the horizontal plane.

[0041] It also should be noted that the design purpose of the dynamic vibration absorber 100 is to make an additional system (i.e., the subsystem composed of the counterweight member 20 and the spring) match the vibration frequency of the main system at a specific frequency. When the natural frequencies of these two systems are close, a resonance phenomenon will occur. When the system vibrates, the counterweight member 20 will start to vibrate according to its own natural frequency, thereby changing the vibration mode of the entire system, absorbing vibration energy, and finally weakening the vibration of the main system.

[0042] Since the vibration direction of the same pipeline in the pipeline system within the concerned frequency band is relatively single, improving the vibration in only one direction can improve the vibration of the pipeline system.

[0043] In the technical solution of the present utility model, the elastic deformation block 1 is installed on the pipeline extending along the first direction through the installation groove 11. The counterweight member 20 is installed in the counterweight groove 12 arranged on one side of the installation groove 11 in the second direction. And a buffer groove 13 is arranged in the area between the installation groove 11 and the counterweight groove 12. When the pipeline vibrates in the second direction, the elastic deformation block 1 drives the counterweight member 20 to vibrate in the second direction. The buffering effect of the buffer groove 13 is equivalent to setting a spring between the pipeline and the counterweight member 20, thereby achieving the vibration reduction effect. By opening the installation groove 11, the buffer groove 13, and the counterweight groove 12 on the elastic deformation block 1, the structure is simple, the manufacturing process is simple, and the processing cost is low. By sleeving the elastic deformation block 1 on the pipeline and directly installing the counterweight member 20 in the counterweight groove 12, the vibration reduction in the second direction can be realized, and the installation is simple, so as to solve the problems that the existing dynamic vibration absorber 100 has a too complex structure, a high processing cost, and a complex installation.

[0044] Furthermore, in this embodiment, a plurality of counterweight grooves 12 are provided, and the counterweight members 20 are installed in cooperation with the counterweight grooves 12.

[0045] "There are multiple counterweight grooves 12 provided", and more than one of the counterweight grooves 12 are provided on the elastic deformation block 1. The multiple counterweight grooves 12 can be distributed at different positions on the elastic deformation block 1, and their layout can be designed according to actual needs to meet specific vibration reduction requirements.

[0046] The multiple counterweight grooves 12 allow users to flexibly adjust the counterweight position and quantity of the vibration absorber according to different vibration conditions. Please refer to Figure 4 , according to the dynamic model, there is the following vibration differential equation:

[0047] Mx1 - +cx1′+(K + k)x1 - cx2′ - kx2 = f = Fslnωt

[0048] mx2 - -cx1′ - kx1 + cx2′ + kx2 = 0

[0049] Solving gives:

[0050]

[0051] Among them, is the static deformation of the main system, μ is the mass ratio, ξ is the damping ratio, γ is the ratio of the natural frequency of the main system, and λ is the ratio of the forced vibration frequency. From the above formula, it can be seen that when X1 is the smallest, the effect of the dynamic vibration absorber is the best. Obviously, when the other parameters remain unchanged and γ = λ, X1 is the smallest. According to the above theory, the various parameters of the dynamic vibration absorber are determined.

[0052] The larger the mass of the counterweight member 20, the lower its natural frequency; conversely, the smaller the mass, the higher the natural frequency. This is because an object with a larger mass requires a greater force to accelerate and move, so its vibration period is longer and its natural frequency is lower.

[0053] For low-frequency vibrations, a heavier counterweight member 20 can be used to adjust the natural frequency of the vibration absorber to make it close to the low-frequency vibration frequency, thereby achieving effective vibration reduction.

[0054] For high-frequency vibrations, a lighter counterweight member 20 is required to adjust the natural frequency of the vibration absorber to match it with the high-frequency vibration frequency to achieve the vibration reduction effect.

[0055] Therefore, for a low-frequency vibration system, three counterweight members 20 can be provided and inserted into their respective corresponding counterweight grooves 12 in sequence; for a high-frequency vibration system, only one counterweight member 20 can be provided and installed in the middle counterweight groove 12; for an intermediate-frequency vibration system, two counterweight members 20 can be provided and installed in two counterweight grooves 12.

[0056] By adjusting the number of the counterweight members 20 to regulate the mass of the counterweight, the natural frequency of the dynamic vibration absorber 100 can be changed to match the vibration frequency to be suppressed. In this way, effective vibration damping treatment can be carried out for vibration systems with different frequencies. The adjustment of different numbers of the counterweight members 20 provides flexibility in the weight of the counterweight, enabling the dynamic vibration absorber 100 to adapt to various vibration environments.

[0057] Further, please refer to Figure 1 and Figure 2 , in this embodiment, the plurality of counterweight grooves 12 are arranged at intervals in the third direction, and the plurality of counterweight grooves 12 are symmetrically arranged about the axis of symmetry of the mounting groove 11 extending in the second direction.

[0058] It should be noted that the second direction is a certain direction perpendicular to the first direction in the horizontal plane, the third direction is a direction perpendicular to the second direction in the horizontal plane, and the first direction, the second direction, and the third direction are perpendicular to each other in pairs.

[0059] Arranging the plurality of counterweight grooves 12 at intervals in the third direction and symmetrically arranged about the second direction enables, when the counterweight members 20 are respectively installed in two of the counterweight grooves 12 that are symmetrically arranged about the second direction, to avoid generating a component at an angle to the second direction when the elastic deformation block 1 vibrates along the second direction, affecting the vibration absorption effect.

[0060] When there are three counterweight grooves 12, when targeting a medium-frequency vibration system, two counterweight members 20 can be provided and installed in the two counterweight grooves 12 on both sides, and the middle counterweight groove 12 located on the axis of symmetry of the mounting groove 11 is empty.

[0061] In this embodiment, please refer to Figure 3 , the counterweight member 20 includes a main body portion 21 installed in the counterweight groove 12 and a limiting portion 22 exposed outside the counterweight groove 12, and the limiting portion 22 protrudes laterally from the main body portion 21.

[0062] The main body portion 21 refers to the main part of the counterweight member 20, and this part is installed in the counterweight groove 12 on the elastic deformation block 1. The main function of the main body portion 21 is to affect the natural frequency of the dynamic vibration absorber 100 through its mass. The natural frequency of the vibration absorber can be adjusted by changing its mass to adapt to vibrations of different frequencies.

[0063] The stopper 22 is a part of the counterweight 20. The stopper 22 does not extend along the length direction of the main body 21, but protrudes outward laterally (relative to the length direction of the main body 21). The stopper 22 prevents the counterweight 20 from slipping or shifting from the counterweight slot 12 during operation. The lateral protrusion of the stopper 22 ensures that the counterweight 20 is firmly installed in the counterweight slot 12 and will not fall off even under strong vibration conditions.

[0064] Furthermore, in this embodiment, the installation groove 11 is eccentrically arranged toward a side away from the counterweight groove 12 relative to the geometric center of the elastic deformation block 1 .

[0065] Since the position of the installation slot 11 affects the center of gravity of the elastic deformation block 1, the center of gravity of the elastic deformation block 1 is located in the second direction. Relative to the installation slot 11, the gravity of the elastic deformation block 1 is used to form a certain counterweight effect in the second direction.

[0066] The installation groove 11 is eccentrically arranged, so as to avoid the elastic deformation block 1 from occupying too much space and provide space for the arrangement of the buffer groove 13 and the counterweight groove 12 .

[0067] Furthermore, in this embodiment, the mounting groove 11 is arranged to laterally penetrate the peripheral side of the elastic deformation block 1 to form a mounting opening 14 on the peripheral side of the elastic deformation block.

[0068] In this way, during installation, the pipeline can be directly installed from the installation opening 14 into the installation groove 11 . When the diameter of the pipeline is larger than the diameter of the installation groove 11 , the installation opening 14 provides a deformation space for the elastic deformation block 1 to deform.

[0069] For further information, see Figure 1 and Figure 2 In this embodiment, the mounting opening 14 is arranged on a side of the elastic deformation block 1 in the second direction and away from the counterweight slot 12 .

[0070] The installation opening 14 is arranged at one end of the elastic deformation block 1 in the second direction, which ensures that the elastic deformation block 1 is symmetrical about the second direction. At the same time, the installation groove 11 is arranged close to one end of the elastic deformation block 1 in the second direction, and the installation opening 14 is arranged at this end. The side corresponding to the installation opening 14 is arranged to be thinner, which is convenient for breaking open the installation opening 14 and installing the pipeline.

[0071] Furthermore, in this embodiment, a limiting groove 15 is concavely provided on the circumferential side surface of the elastic deformation block 1 , and the limiting groove 15 extends along the circumferential direction of the elastic deformation block 1 .

[0072] The limiting groove 15 is provided on the circumferential side surface of the elastic deformation block 1. The circumferential side surface refers to the outer surface of the elastic deformation block 1, and the limiting groove 15 extends along the circumferential direction of the elastic deformation block 1. The "circumferential direction" refers to the circular path along the elastic deformation block 1, that is, along the circumferential direction.

[0073] In this way, the cable tie can be extended along the direction of the limiting groove 15 to tighten the elastic deformation block 1. The limiting groove 15 prevents the cable tie from shifting, and when the elastic deformation block 1 vibrates, it prevents the cable tie from detaching.

[0074] In this embodiment, the counterweight 20 is provided as a metal counterweight 20.

[0075] It can be understood that metal materials usually have a relatively high density, and can provide a relatively large mass relative to the relatively small counterweight 20. This is particularly important for the dynamic vibration absorber 100 that needs to precisely adjust the natural frequency, because a relatively large mass can more effectively absorb vibration energy.

[0076] Commonly used metal materials include but are not limited to steel, aluminum, copper, etc. Of course, other possible materials can also be used, and specifically can be determined according to the actual situation. The embodiments of this specification do not make limitations in this regard.

[0077] The present utility model also proposes a pipeline assembly, which includes a pipeline assembly and a dynamic vibration absorber 100. The specific structure of the dynamic vibration absorber 100 refers to the above embodiments. Since this pipeline assembly adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated one by one here.

[0078] The present utility model also proposes an air conditioning device, which includes a pipeline assembly and a dynamic vibration absorber 100. The specific structure of the pipeline assembly refers to the above embodiments. Since this air conditioning device adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated one by one here.

[0079] The above are only exemplary embodiments of the present utility model, and do not limit the patent scope of the present utility model. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present utility model.

Claims

1. A dynamic vibration absorber, characterized in that: include: An elastic deformation block, wherein the elastic deformation block has two ends arranged opposite to each other in a first direction, the elastic deformation block is provided with a mounting groove penetrating the two ends thereof, a counterweight groove is further provided on one side of the mounting groove in a second direction, and a buffer groove is provided between the mounting groove and the counterweight groove; and, A counterweight is installed in the counterweight slot.

2. The dynamic vibration absorber according to claim 1, characterized in that: The counterweight slots are provided in plurality, and the counterweight members are installed in cooperation with the counterweight slots.

3. The dynamic vibration absorber according to claim 2, characterized in that: The plurality of counterweight grooves are arranged at intervals in the third direction, and the plurality of counterweight grooves are symmetrically arranged about a symmetry axis of the installation groove extending along the second direction.

4. The dynamic vibration absorber according to claim 2, characterized in that: The counterweight member includes a main body installed in the counterweight groove, and a limiting portion exposed outside the counterweight groove, and the limiting portion is arranged to protrude laterally from the main body.

5. The dynamic vibration absorber according to any one of claims 1 to 4, characterized in that: The mounting groove is eccentrically arranged relative to the geometric center of the elastic deformation block and toward a side away from the counterweight groove.

6. The dynamic vibration absorber according to claim 5, characterized in that: The installation groove is arranged to laterally penetrate the peripheral side portion of the elastic deformation block to form an installation opening on the peripheral side portion of the elastic deformation block.

7. The dynamic vibration absorber according to claim 6, characterized in that: The installation opening is arranged at a side of the elastic deformation block in the second direction and away from the counterweight slot.

8. The dynamic vibration absorber according to claim 1, characterized in that: A limiting groove is concavely provided on the peripheral side surface of the elastic deformation block, and the limiting groove extends along the circumferential direction of the elastic deformation block.

9. The dynamic vibration absorber according to claim 1, characterized in that: The counterweight is configured as a metal counterweight.

10. A pipeline assembly, characterized in that: It comprises a dynamic vibration absorber as claimed in any one of claims 1 to 9.

11. An air conditioning device, characterized in that: Comprising the pipeline assembly as claimed in claim 10.

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