CN216308033U

CN216308033U - Air conditioner

Info

Publication number: CN216308033U
Application number: CN202122713471.5U
Authority: CN
Inventors: 杜明龙; 李丛来; 尹崇达; 王奉军; 齐磊
Original assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Current assignee: Qingdao Hisense Hitachi Air Conditioning System Co Ltd
Priority date: 2021-11-08
Filing date: 2021-11-08
Publication date: 2022-04-15
Anticipated expiration: 2031-11-08

Abstract

The utility model discloses an air conditioner, which comprises a tubing and a vibration damper; a damper having a through hole through which the pipe passes, the through hole having a diameter larger than an outer diameter of the pipe, an inner wall of the through hole being designed with an arc-shaped abutting portion; the weight of the vibration damper is equal to that of the tubing; the pipe passes through the through hole, the arc-shaped abutting part abuts against the outer wall of the pipe, and a gap is formed between the inner wall of the through hole and the outer wall of the pipe. The air conditioner of the utility model collides with the through hole when the pipe vibrates, and the speed of the pipe after the collision is 0, therefore, the vibration reduction effect of the vibration reduction hammer is good, the noise of the air conditioner is reduced, and the vibration level and the noise level of the pipe of the air conditioner can be effectively reduced.

Description

Air conditioner

Technical Field

The utility model relates to the technical field of electric appliances, in particular to an air conditioner.

Background

The noise of the outdoor unit of the air conditioner is becoming more and more the key point of market attention and complaints, wherein the low-frequency noise is attenuated little and has strong penetrating power in the transmission process, and is easy to be transmitted to the indoor space, especially the bedroom, through the wall body or the glass from the outdoor space, so that the complaint of users is strong, and the air suction pipe and the exhaust pipe of the air conditioner are the main radiation sources of the low-frequency noise; meanwhile, the pipeline of the air conditioner outdoor unit vibrates excessively, and very large alternating stress is generated at the bending or welding root of the pipeline, so that the pipeline is subjected to fatigue fracture, and therefore the vibration reduction design of the pipeline is the key and difficult point of the design of the air conditioner outdoor unit.

The fundamental frequency of the scroll compressor is generally 30-110 Hz, and the fundamental frequency of the dual-rotor compressor is generally 40-220 Hz. The existing pipeline vibration reduction design mainly adopts the way of pipeline trend and increasing fastening vibration reduction hammer balance weight.

The traditional vibration reduction hammer is designed to be in fastening contact with a distribution pipe, the concentrated quality is increased, the resonance frequency point of a distribution pipe system can be reduced, a new resonance peak point still appears on an air suction pipe and an exhaust pipe of a compressor under the operation fundamental frequency of the compressor, the noise of the whole machine is overlarge, the risk of pipe breakage even exists, and the vibration reduction effect is poor.

Disclosure of Invention

The utility model provides an air conditioner, which improves the vibration reduction effect.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides an air conditioner, which comprises a tubing and a vibration damper;

a damper having a through hole through which the pipe passes, the through hole having a diameter larger than an outer diameter of the pipe, an inner wall of the through hole being designed with an arc-shaped abutting portion; the weight of the vibration damper is equal to that of the tubing;

the pipe passes through the through hole, the arc-shaped abutting part abuts against the outer wall of the pipe, and a gap is formed between the inner wall of the through hole and the outer wall of the pipe.

Further, the damping hammer is the cover tube-shaped, the axis of the skew damping hammer of through-hole, the axis of damping hammer, the axis of through-hole, the symmetry axis of arc butt portion are on the coplanar, just the distance of arc butt portion and the axis of damping hammer is greater than the distance of the axis of through-hole and the axis of damping hammer.

Still further, the through hole is concentric with the pipe.

Furthermore, the damper hammer is provided with a notch, and the notch extends from the inner wall of the through hole to the outer side wall of the damper hammer.

Still further, the central axis of the damper, the central axis of the through hole, and the notch are located on the same plane.

Further, the arc-shaped abutting part is in a sector ring shape.

Still further, the radius of curvature of the arc surface of the arc abutting portion contacting the outer wall of the pipe is equal to 1/2 of the outer diameter of the pipe.

Furthermore, the central angle of the arc-shaped abutting part is 10-90 degrees.

Still further, the junction of the inner wall of through-hole and arc butt portion is provided with the fillet.

Furthermore, the vibration damper is made of a deformation elastic material.

Compared with the prior art, the technical scheme of the utility model has the following technical effects: according to the air conditioner, the vibration damper is arranged on the pipe, the vibration damper is provided with the through hole, the diameter of the through hole is larger than the outer diameter of the pipe, and the inner wall of the through hole is provided with the arc-shaped abutting part; the weight of the damper is equal to that of the tubing; the pipe passes through the through hole, the arc-shaped abutting part abuts against the outer wall of the pipe, and a gap is formed between the inner wall of the through hole and the outer wall of the pipe; when the pipe is vibrated, the pipe collides with the through hole, and the speed of the pipe after the pipe is collided is 0, so that the vibration damping effect of the vibration damper is good, the noise of the air conditioner is reduced, and the vibration level and the noise level of the pipe of the air conditioner can be effectively reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of an air conditioner according to the present invention;

FIG. 2 is a schematic view of the installation location of the damper hammer;

FIG. 3 is a schematic structural view of a damper;

FIG. 4 is a schematic view of the damper assembled with the pipe;

fig. 5 is a schematic view showing the installation of the damper and the pipe.

Reference numerals:

10. a compressor;

20. piping;

30. a damper;

31. a through hole; 32. an arcuate abutment; 33. cutting; 34. a gap.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, it should be noted that the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected unless otherwise explicitly stated or limited. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

The air conditioner performs a refrigeration cycle and a heating cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator, and control is performed by a controller, achieving flow direction control of refrigerant, opening degree control of the expansion valve, and the like. The refrigeration cycle and the heating cycle include a series of processes involving compression, condensation, expansion, and evaporation, and supply refrigerant to air that has been conditioned and heat-exchanged.

The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.

The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the outdoor unit or the indoor unit of the air conditioner.

The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.

The air conditioner of the present embodiment includes a compressor 10, a condenser, a throttle device, an evaporator, a pipe 20, a damper 30, and the like, as shown in fig. 1 to 5. The damper weight 30 is mounted on the piping 20 of the air conditioner for damping vibration and reducing noise.

The piping 20 includes a refrigerant circulation line such as an intake pipe and an exhaust pipe, and the damper 30 may be installed as long as it is a line requiring damping. And a vibration reduction hammer 30 is arranged at the position with the maximum vibration of the pipe to reduce vibration and noise.

A damper 30 having a through hole 31 through which the pipe passes, the diameter of the through hole 31 (i.e., the inner diameter of the damper) being larger than the outer diameter of the pipe 20, the damper 30 being fitted around the pipe 20, the inner wall of the through hole 31 (i.e., the inner wall of the damper) being designed with an arc-shaped abutting portion 32 for abutting against the pipe 20; the damper weight 30 is equal to the weight of the pipe 20.

The pipe 20 passes through the through hole 31, the arc contact portion 32 contacts the pipe outer wall, and a gap 34 is provided between the inner wall of the through hole 31 and the pipe outer wall. The width of the gap 34 is x 1.

That is, when the pipe 20 does not vibrate, the damper weight 30 is caught on the pipe 20, the arc-shaped abutment portion 32 contacts the pipe outer wall, and the other portion of the inner wall of the through hole 31 (i.e., the portion of the inner wall of the through hole where the arc-shaped abutment portion 32 is not provided) has a gap 34 with the pipe outer wall.

When the pipe 20 vibrates, the pipe 20 collides with the inner wall of the through hole 31, and when the damper weight is equal to the pipe weight according to the law of conservation of momentum and the law of conservation of kinetic energy, the speed of the pipe 20 after the collision becomes 0, and the pipe vibration displacement is limited to the clearance.

Assuming that the vibration velocity of the pipe at the time when the lateral displacement is x1 is v1, the damper weight is not yet in contact with the pipe at this time, and the velocity of the damper weight is 0. At the moment, the piping begins to collide with the damper, and the conservation of momentum and the conservation of kinetic energy are applied to obtain a relational expression:

law of conservation of momentum: m × v1= M × v2+ M × v 3; (1)

law of conservation of kinetic energy: fabric # M × v1= fabric # M + v2+ fabric # M + v 3; (2)

equation (1) translates to: v2= M (v1-v 3)/M; (3)

substituting equation (3) into equation (2) yields: v3= v1 (M-M)/(M + M);

m is the weight of the pipe, M is the weight of the damper weight, and v1 is the vibration velocity of the pipe before the pipe collides with the damper weight; v2 is the velocity of the damper hammer after impact; v3 is the velocity after pipe collision. It can be found that when the damper weight is equal to the pipe weight, the speed of the pipe 20 after collision is 0, i.e., when M = M, v3= 0.

In the air conditioner of the embodiment, the damper 30 is installed on the pipe 20, the damper 30 is provided with a through hole 31, the diameter of the through hole 31 is larger than the outer diameter of the pipe 20, and the inner wall of the through hole 31 is provided with an arc-shaped abutting part 32; the weight of damper 30 is equal to the weight of pipe 20; the pipe 20 passes through the through hole 31, the arc contact portion 32 contacts the pipe outer wall, and a gap 34 is provided between the inner wall of the through hole 31 and the pipe outer wall. When the pipe 20 vibrates, the pipe 20 collides with the through hole 31, and the speed of the pipe 20 after the collision is 0, so that the vibration reduction effect of the vibration reduction hammer is good, the noise of the air conditioner is reduced, and the vibration level and the noise level of the pipe of the air conditioner can be effectively reduced.

In this embodiment, the damper 30 is in a sleeve shape, the through hole 31 deviates from the central axis of the damper 30, that is, the damper is an eccentric sleeve, the central axis of the damper 30, the central axis of the through hole 31, and the symmetry axis of the arc abutting portion 32 are on the same plane, and the arc abutting portion 32 is far away from the central axis of the damper 30, that is, the distance between the arc abutting portion 32 and the central axis of the damper 30 is greater than the distance between the central axis of the through hole 31 and the central axis of the damper 30. That is, the central axis of the through hole 31 is parallel to but not coincident with the central axis of the damper weight 30, and the distance between the two central axes (i.e., the eccentricity) is d4 in fig. 4. In this embodiment, the central axis of the damper refers to the central axis of the outer wall of the damper.

Since the damper weight 30 is eccentrically designed, it is ensured that after the damper weight 30 is mounted on the pipe 20, the damper weight 30 returns to the mounting position shown in fig. 4 by its own weight, that is, the arc-shaped abutting portion 32 abuts against the outer wall of the pipe.

In the present embodiment, when the pipe 20 passes through the through hole 31, the arc-shaped abutment portion 32 abuts against the pipe outer wall, and the through hole 31 is concentric with the pipe 20, that is, the distance between the outer wall of the pipe 20 and the inner wall of the through hole 31 is equal everywhere. That is, the gap width x1 between the inner wall of the through hole 31 (the part of the inner wall of the through hole where the arc abutting part 32 is not designed) and the outer wall of the pipe is equal everywhere, so that the maximum displacement of vibration is equal no matter which direction the pipe vibrates, the effect after collision with the vibration damper is the same, and the vibration damper has a good vibration damping effect. When the damper weight 30 automatically returns to the mounting position shown in fig. 4 by its own weight, the distance x1 between the inner wall of the through hole 31 and the outer wall of the pipe 20 is always maintained.

Referring to fig. 4, d1 is the outer diameter of the damper hammer, d2 is the inner diameter of the damper hammer, i.e., the diameter of the through hole 31; d3 is the pipe outside diameter. d2= d3+2 × 1.

In the present embodiment, in order to facilitate the installation of the damper hammer to the pipe, the damper hammer 30 has a notch 33, and the notch 33 extends from the inner wall of the through hole 31 to the outer wall of the damper hammer 30, so that the damper hammer is assembled to the pipe 20. During installation, the notch 33 is opened, and the damper weight 30 is fitted over the pipe 20.

In the present embodiment, the center axis of the damper weight 30, the center axis of the through hole 31, and the notch 33 are located on the same plane, but the axis of symmetry of the arc-shaped abutment portion 32 is also located on this plane. As shown in fig. 5, during installation, the attitude of the damper weight 30 is adjusted such that the arc abutting portion 32 is above the notch 33 and the notch 33 is below, the notch 33 is opened left and right to separate the two cut surfaces of the notch 33, the damper weight is then fitted over the pipe 20 from top to bottom, the arc abutting portion 32 abuts against the outer wall of the pipe 20, the notch 33 is then released, the two cut surfaces of the notch 33 are fitted together, and installation is completed, and at this time, the positional relationship between the damper weight 30 and the pipe 32 is as shown in fig. 4, which is a stable state of the damper weight 30, and thus, the damper weight and the pipe can be easily attached and detached.

In this embodiment, the arcuate abutment 32 is formed in a sector shape to facilitate design and processing.

In the present embodiment, the curvature radius of the arc surface of the arc abutting portion 32 contacting the outer wall of the pipe is equal to 1/2 of the outer diameter of the pipe, that is, the curvature radius of the inner arc surface of the arc abutting portion 32 in the fan-shaped ring shape is equal to 1/2 of the outer diameter of the pipe, so that the arc abutting portion 32 can be completely attached to the outer wall of the pipe, and the stability when the arc abutting portion 32 abuts against the outer wall of the pipe is ensured. The radius of curvature of the outer circumference arc of the sector ring 32 is equal to 1/2 of the inner diameter of the through hole.

In the present embodiment, the central angle θ of the arcuate abutment portion 32 is 10 ° to 90 °. If central angle theta takes on the undersize, can make arc butt portion shorter, and the area of contact with the piping outer wall is less, poor stability when leading to arc butt portion 32 and piping outer wall butt. If central angle theta value is too big, can make arc butt portion longer, and the area of contact with the piping outer wall is great, damping effect when influencing the piping vibration. Therefore, selecting the central angle θ in the above range ensures stability when the arc abutting portion 32 abuts against the outer wall of the pipe, and does not significantly affect the vibration damping effect.

In this embodiment, a rounded corner r1 is provided at the connection (where the stress is relatively concentrated) between the inner wall of the through hole 31 and the arc-shaped abutting portion 32, so as to buffer the large deformation of the damper during the installation process, avoid the tension fracture, and ensure the installation safety of the damper.

In order to facilitate installation, further improve the assembly safety of the damper 30 and prolong the service life of the damper, the damper 30 is made of a large-deformation elastic material, such as rubber, and the cut 33 can be conveniently pulled open without damaging the damper 30.

In this embodiment, the damping hammer is integrally formed, so that the structural strength of the damping hammer can be improved, and the service life of the damping hammer can be prolonged.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. An air conditioner, comprising a piping, characterized in that: further comprising:

2. The air conditioner according to claim 1, wherein: the damping hammer is sleeve form, the axis of the skew damping hammer of through-hole, the axis of damping hammer, the axis of through-hole, the symmetry axis of arc butt portion are on the coplanar, just the distance of arc butt portion and the axis of damping hammer is greater than the distance of the axis of through-hole and the axis of damping hammer.

3. The air conditioner according to claim 2, wherein: the through hole is concentric with the tubing.

4. The air conditioner according to claim 1, wherein: the vibration reduction hammer is provided with a notch, and the notch extends from the inner wall of the through hole to the outer side wall of the vibration reduction hammer.

5. The air conditioner according to claim 4, wherein: the central axis of the vibration damper, the central axis of the through hole and the notch are located on the same plane.

6. The air conditioner according to claim 1, wherein: the arc-shaped abutting part is in a fan-shaped ring shape.

7. The air conditioner according to claim 6, wherein: the curvature radius of the arc surface of the arc abutting part contacting with the outer wall of the pipe is equal to 1/2 of the outer diameter of the pipe.

8. The air conditioner according to claim 6, wherein: the central angle of the arc-shaped abutting part is 10-90 degrees.

9. The air conditioner according to claim 1, wherein: and a fillet is arranged at the joint of the inner wall of the through hole and the arc-shaped abutting part.

10. The air conditioner according to any one of claims 1 to 9, wherein: the vibration damper is made of a deformation elastic material.