WO2018014482A1

WO2018014482A1 - Cooling apparatus

Info

Publication number: WO2018014482A1
Application number: PCT/CN2016/107346
Authority: WO
Inventors: 邢志钢; 刘乾坤; 李珺; 季振勤
Original assignee: 广东美的制冷设备有限公司; 美的集团股份有限公司
Priority date: 2016-07-19
Filing date: 2016-11-25
Publication date: 2018-01-25

Abstract

A cooling apparatus (100), comprising: an apparatus casing (1), a soundproof shielding (2), a compressor (3), and a first vibration damping leg pad (4). The soundproof shielding (2) is provided within the apparatus casing (1). An installation compartment (21) is further defined within the soundproof shielding (2). A pipeline opening (22) is provided on the soundproof shielding (2). The compressor (3) is placed within the installation compartment (21). A refrigerant pipeline (31) of the compressor (3) passes through the soundproof shielding (2) via the pipeline opening (22). The first vibration damping leg pad (4) is connected between the soundproof shielding (2) and the apparatus casing (1).

Description

Refrigeration device

Technical field

The present invention relates to the field of refrigeration equipment, and more particularly to a refrigeration apparatus.

Background technique

In a common air conditioning system, during a cooling operation, the compressor first pressurizes the refrigerant, and then drives the high pressure refrigerant to enter the condenser through the compressor line. The refrigerant releases heat in the condenser and liquefies, then flows into the evaporator. Evaporation absorbs heat to achieve a cooling effect. The refrigerant is then returned to the compressor from the compressor line to complete a refrigeration cycle.

In air conditioning systems, compressors are the most important source of noise and vibration, especially for integral air conditioners such as window air conditioners, mobile air conditioners and dehumidifiers.

In this type of integral air conditioner, the noise of the compressor during operation can often be radiated through the support structure. Obviously, the existing air conditioning support structure can not exert obvious noise reduction effect, and sometimes even amplify the compressor noise due to resonance. . In order to achieve the purpose of vibration reduction, the compressor is often connected to the support structure through the compressor foot pad to form a single-stage vibration isolation system.

However, due to the large vibration of the compressor during operation, even if a single-stage vibration isolation system is commonly used in existing air-conditioning systems, the vibration of the compressor is transmitted, causing abnormal vibration of the support structure and even causing abnormal noise in the support structure. All in all, the existing air conditioning system for the control of compressor noise and vibration has been difficult to meet the market demand for low noise air conditioning.

Summary of the invention

The present application is intended to address at least one of the technical problems existing in the prior art. To this end, the present invention aims to provide a refrigerating apparatus which can effectively reduce vibration and reduce noise.

A refrigerating device according to the present invention includes: a device casing; a soundproof cover, the soundproof cover is disposed in the device casing, the soundproof cover defines a placement cavity, the soundproof cover is provided with a nozzle; the compressor, The compressor is disposed in the placement chamber, and the refrigerant pipeline of the compressor passes through the sound insulator cover through the nozzle; the first shock absorption foot pad, the first shock absorption foot pad is connected to the Between the sound enclosure and the device housing.

According to the refrigeration device of the embodiment of the present invention, the soundproof cover is attached to the compressor through the soundproof cover, and the soundproof cover is connected to the device casing through the first shock-absorbing foot pad to soundproof and vibration-proof the compressor, thereby significantly reducing the noise emitted by the compressor and The vibration makes the refrigeration device operate with low noise, low vibration and comfortable use. This solution is applied to air conditioning systems, especially in household air conditioning systems where noise is critical.

In some embodiments, the refrigeration device further includes a second damper foot pad coupled between the sound enclosure and the compressor. Therefore, the setting of the double-stage damper foot pad can exert a good vibration isolation effect, reduce the vibration transmission rate from the compressor to the soundproof cover to the device casing, and suppress the vibration of the device casing and the noise radiation.

In some embodiments, the sound enclosure is a rigid piece of material. Thereby achieving good sound insulation.

In some embodiments, at least a portion of the inner wall surface of the placement chamber is provided with a layer of sound absorbing material. Thereby, the sound energy can be absorbed, the sound wave is gradually weakened, and the noise is reduced.

In some embodiments, the layer of sound absorbing material is a layer of porous fibers.

In some embodiments, a seal is provided between the refrigerant conduit and the inner peripheral wall of the nozzle. Thereby, the sound wave can be prevented from leaking from the nozzle into the external environment, thereby further improving the noise reduction effect.

In some embodiments, a sealing layer is provided on an inner peripheral wall of the nozzle and/or an outer surface of the refrigerant conduit. Thereby, the sound wave can be prevented from leaking from the nozzle into the external environment, thereby further improving the noise reduction effect.

In some embodiments, the refrigeration device further includes a partition disposed in the placement chamber to divide the placement chamber into a plurality of sub-chambers, the compressor being disposed in one of the sub-chambers . In this way, the acoustic energy can be further consumed by using the extra sub-cavities.

In some embodiments, the sound enclosure is provided with a heat rejection fan for preventing overheating of the compressor. Thereby ensuring that the compressor works at a suitable ambient temperature and improving the operational reliability of the compressor.

In some embodiments, the sound enclosure is provided with a heat sink for preventing overheating of the compressor. Thereby ensuring that the compressor works at a suitable ambient temperature and improving the operational reliability of the compressor.

The additional aspects and advantages of the invention will be set forth in part in the description which follows.

DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from

1 is a schematic view of a refrigeration apparatus according to an embodiment of the present invention;

2 is a schematic view of a refrigeration apparatus according to another embodiment of the present invention;

3 is a partial structural schematic view of a refrigeration apparatus according to an embodiment of the present invention.

Reference mark:

Refrigeration device 100,

Device housing 1,

The soundproof cover 2, the placement cavity 21, the sub-cavity 211, the nozzle 22, the sound absorbing material layer 23,

Compressor 3, refrigerant pipe 31,

The first damper foot pad 4 and the second damper foot pad 5

Separator 6, through hole 61, and seal 7.

detailed description

The embodiments of the present invention are described in detail below, and the examples of the embodiments are illustrated in the drawings, wherein the same or similar reference numerals are used to refer to the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the drawings are intended to be illustrative of the invention and are not to be construed as limiting.

The refrigeration device 100 according to the embodiment of the present invention is described below with reference to FIG. 1 to FIG. 3. The refrigeration device 100 may be an air conditioner, a refrigerator, an ice maker, or the like, and is not specifically limited herein.

The refrigeration device 100 according to the embodiment of the present invention, as shown in FIG. 1, includes: a device casing 1, a soundproof cover 2, a compressor 3, and a first damper foot pad 4. The soundproof cover 2 is disposed in the device casing 1, and the soundproof cover A placement chamber 21 is defined in the housing 2, and a nozzle 22 is provided on the soundproof cover 2. The compressor 3 is disposed in the placement chamber 21, and the refrigerant pipe 31 of the compressor 3 passes through the nozzle 22 through the soundproof cover 2, and the first damper foot pad 4 is connected between the soundproof cover 2 and the device casing 1.

Here, the soundproof cover 2 can be connected to the bottom plate of the device casing 1 through the first damper foot pad 4, and the soundproof cover 2 can also be connected to the support structure on the bottom plate of the device casing 1 through the first damper foot pad 4.

That is, in the refrigerating apparatus 100, the outside of the compressor 3 is covered with a soundproof cover 2 through which the compressor 3 is isolated from other structures of the apparatus. At the same time, the soundproof cover 2 is connected to the device casing 1 through the first damper foot pad 4, which corresponds to the soundproof hood 2 being separated from the other structure of the device by the first damper foot pad 4. With this arrangement, the noise and vibration of the compressor 3 can be isolated from other structures of the device.

In terms of noise control, the compressor 3 is the primary source of noise in the refrigeration unit 100, and the compressor 3 will emit significant acoustic excitation to the surrounding air. When the sound waves are transmitted to the soundproof cover 2, the vibration of the soundproof cover 2 itself is usually excited and transmitted to the air environment outside the soundproof cover 2. It should be noted that the noise generated by the sound wave excitation vibration of the soundproof cover 2 is connected to the noise directly transmitted from the compressor 3 to the outside, and the sound wave excitation vibration of the soundproof cover 2 is much smaller than that of the ordinary material, so the soundproof cover is used. 2 The cover is on the compressor 3, and the sound waves transmitted from the compressor 3 to the outside environment can be greatly reduced.

The compressor 3 is also the main vibration source of the refrigeration device 100 in terms of vibration control. When the compressor 3 is disposed in the soundproof cover 2, the compressor 3 transmits vibration outward through the soundproof cover 2. It can be understood that a part of the first damper foot pad 4 functions as a spring, and a first damper foot pad 4 is disposed between the soundproof cover 2 and the device casing 1. The first damper foot pad 4 has certain elasticity. Allowing the soundproof cover 2 to vibrate in a small range to consume the compressor 3 The vibrational energy generated during the process.

In a specific example, as shown in FIG. 3, the refrigerating device 100 is an air conditioner. Inside the air conditioner, the outer side of the air conditioner compressor is covered with a soundproof cover 2, and the first shock absorbing pad 4 is disposed at the bottom of the soundproof cover 2, This example is an effective application example of the noise and vibration isolation method of the compressor 3.

The refrigerating apparatus 100 according to the embodiment of the present invention is disposed on the compressor 3 through the soundproof cover 2, and the soundproof cover 2 is connected to the device casing 1 through the first damper foot pad 4, thereby realizing sound insulation and vibration isolation of the compressor 3. The noise and vibration emitted by the compressor 3 are significantly reduced, so that the refrigeration device 100 has low noise, low vibration, and comfortable use. This solution is applied to air conditioning systems, especially in household air conditioning systems where noise is critical.

In some embodiments, as shown in FIG. 1 , the refrigeration device 100 further includes a second damper foot pad 5 connected between the soundproof cover 2 and the compressor 3 .

That is, in the soundproof cover 2, the soundproof cover 2 is separated from the compressor 3 by the second shock absorbing pad 5. Thus, since the soundproof cover 2 is also separated from the device casing 1 by the first damper foot pad 4 outside the soundproof cover 2, this embodiment corresponds to the secondary composite vibration isolation of the compressor 3.

It can be understood that by properly arranging the geometry and Shore hardness of the two-stage damper foot pad, the vibration isolation effect of the two-stage damper foot pad is much higher than the single-stage vibration isolation of the compressor foot pad in the prior art. Program. Therefore, the arrangement of the two-stage damper foot pad can exert a good vibration isolation effect, reduce the vibration transmission rate from the compressor 3 to the soundproof cover 2 to the device casing 1, and suppress the vibration and noise radiation of the device casing 1.

In some embodiments, to prevent noise from the compressor 3 from being transmitted from the slit of the nozzle 22, a seal 6 may be disposed between the refrigerant conduit 31 and the inner peripheral wall of the nozzle 22. The nozzles 22 of the refrigerant pipe 31 entering and exiting the soundproof cover 2 are treated by the sealing member 6, so that sound waves can be prevented from leaking from the nozzles 22 into the external environment, thereby further improving the noise reduction effect.

Of course, the solution of the embodiment of the present invention is not limited thereto. For example, a sealing layer may be disposed on the inner peripheral wall of the nozzle 22, and the sealing layer is wrapped on the refrigerant pipe 31. For another example, a sealing layer may be disposed on the outer surface of the refrigerant pipe 31, and the sealing layer may be sealed in the nozzle 22.

Since the refrigerant pipe 31 vibrates violently when the compressor 3 is operated, causing many safety hazards, the sealing member or the sealing layer can not only prevent the sound wave from propagating outward along the nozzle 22, but also can consume the vibration of the refrigerant pipe 31. The energy, thereby suppressing the resonance amplitude, reduces the stress level in the refrigerant pipe 31 at the time of vibration, and avoids the occurrence of pipe breakage and refrigerant leakage.

In some embodiments, the sound enclosure 2 is a rigid piece of material to achieve good sound insulation.

It should be noted that if the soundproof cover 2 is made of a rigid material, it is obvious that the higher the rigidity of the soundproof cover 2, the smaller the vibration generated by the sound wave excitation, and the less the sound waves transmitted to the external environment. Therefore, the soundproof cover 2 can be made of a material having a high areal density and a high rigidity.

In some embodiments, at least a portion of the inner wall surface of the placement chamber 21 is provided with a layer of sound absorbing material 23 to prevent the compressor 3 from having a "reverberation" effect in the closed chamber. Here, the "reverberation" effect refers to the effect of sound wave enhancement after repeated reflection and amplification of sound waves in the soundproof cover. Therefore, the sound absorbing material layer 23 is used to absorb the sound wave energy, so that the sound wave is gradually weakened and the noise is reduced.

Advantageously, as shown in FIG. 1, a sound absorbing material layer 23 is provided on all of the inner wall surfaces of the placement chamber 21 to absorb sound waves in all directions and to attenuate the noise propagating outward.

Alternatively, the sound absorbing material layer 23 is a porous fiber layer. Of course, the sound absorbing material layer 23 can also be made of other materials. For example, the sound absorbing material layer 23 can be a sound absorbing cotton or the like.

The soundproof cover 2 can also adopt other structures. For example, in one specific example, the soundproof cover 2 can include a three-layer structure, and the layer structure of the soundproof cover 2 is a sound absorbing cotton layer, a sound insulating layer layer and a cover layer from the inside to the outside. The shell layer is a metal layer or an aluminum plastic layer.

For another example, in another specific example, the soundproof cover 2 includes a rubber layer and a sponge layer, and a double-layer sound insulation layer is used to achieve a multi-band vibration and noise reduction effect.

In some embodiments, as shown in FIG. 2, the refrigeration apparatus 100 further includes a partition 6 disposed in the placement chamber 21 to divide the placement chamber 21 into a plurality of sub-chambers 211, and the compressor 3 is disposed in one of the chambers Within the cavity 211. Thus, the acoustic energy can be further consumed by using the extra sub-cavities 211.

For example, the partition plate 6 may be formed in a ring shape, the partition plate 6 is circumferentially disposed around the compressor 3, and the partition plate 6 is spaced apart from the compressor 3 such that the outer peripheral direction of the compressor 3 is equivalent to the provision of double-layer isolation.

Optionally, the partition 6 is provided with a through hole 61 for communicating the plurality of sub-cavities 211.

It can be understood that, according to the sudden expansion, contraction or bypass of the resonant cavity of the pipeline, part of the acoustic wave propagating along the pipeline reflects and interferes at the sudden change of the cross section of the pipeline, so that the principle of the acoustic energy is lowered, thereby being communicated through the through hole 61. The sub-cavity 211 can be regarded as an expansion chamber, and the sound wave is reduced when the sound wave propagates from the sub-cavity 211 where the compressor 3 is located to the adjacent sub-chamber 211.

Alternatively, a sound absorbing material member (not shown) may be filled in the sub-cavity 211 where the compressor 3 is not provided, thereby further absorbing sound waves and reducing noise.

In some embodiments, the soundproof cover 2 may be provided with a heat exhaust fan (not shown) or a heat sink (not shown) for preventing overheating of the compressor 3, thereby ensuring that the compressor 3 is at a suitable ambient temperature. Work to improve the compressor Work reliability.

For example, a cover opening (not shown) may be provided on the soundproof cover 2, and a heat exhaust fan is mounted on the opening. For another example, a pipe through which the low-temperature refrigerant flows through the refrigeration apparatus 100 can be connected to the soundproof cover 2, and the pipe can constitute a heat sink. Of course, the heat sink can also adopt other structures, which are not specifically limited herein.

For ease of understanding, the internal structure of the refrigeration apparatus 100 in one specific example will be described below with the structure shown in FIG.

In this example, the refrigerating apparatus 100 is an air conditioner, and the compressor 3 of the air conditioner is installed in the soundproof cover 2 through the second damper foot pad 5 (corresponding to the first stage vibration isolation), and the two refrigerant pipes attached to the compressor 3 31 protrudes through the nozzle 22 on the soundproof cover 2, the nozzle 22 is covered with a sealing member 7, the inner wall of the soundproof cover 2 is provided with a sound absorbing material layer 23, and the soundproof cover 2 is passed through the first shock absorbing foot pad 5 (equivalent Connected to the external structure of the air conditioner in the secondary vibration isolation.

The main principle of this example is to use the rigid wall to face the attenuation of sound waves to achieve noise reduction, while using the two-stage composite vibration isolation system to achieve vibration isolation. The advantages of this example scheme are described below in terms of noise control and vibration control.

In this example, in terms of noise control, the soundproof cover 2 is made of a material having a high surface density and rigidity, which can reduce the vibration of the soundproof cover 2 by the sound wave excitation, so that the sound waves transmitted to the external environment are less, and the tube is used at the same time. The sealing member 7 at the port 22 treats the nozzle 22 of the refrigerant pipe 31 into and out of the soundproof cover 2 to prevent sound waves from leaking from the nozzles 22 into the external environment. Further, the soundproof cover 2 is covered with a sound absorbing material layer 23 to prevent the "reverberation" of the compressor 3 in the closed cavity.

In terms of vibration control, since the compressor 3 is connected to the soundproof cover 2 through the primary shock absorbing foot pad, the soundproof cover 2 is connected to the external structure of the air conditioner through the secondary shock absorbing foot pad, so the example performs the secondary operation on the compressor 3 Composite vibration isolation, through the reasonable configuration of the damping pad geometry and Shore hardness, the vibration isolation effect will be greatly improved.

In summary, the air conditioner compressor noise and vibration isolation scheme given by this example can greatly attenuate the noise emitted by the compressor 3 on the one hand, and can also significantly isolate the vibration generated by the compressor 3 on the other hand, thereby significantly improving the noise of the air conditioner. And vibration performance, especially in integral air conditioners.

It should be noted that the structure, working principle and structure of the shock absorbing pad of the compressor 3 are well known to those skilled in the art. In addition, the refrigeration device 100 further includes components such as an evaporator and a condenser, and the structures of these components are also included. The working principle and the connection with the compressor 3 are also known in the prior art and will not be described again here.

In the description of the present invention, it is to be understood that the orientations of the terms "upper", "lower", "top", "bottom", "inner", "outer", "radial", "circumferential", etc. Or the positional relationship is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of describing the present invention and the simplified description, and does not indicate or imply that the device or component referred to has a specific orientation, is constructed and operated in a specific orientation. Therefore, it should not be construed as limiting the invention.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" and "second" can be clearly indicated Or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless otherwise stated.

In the description of the present invention, the terms "installation", "connected", "connected", and "fixed" are to be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. , or integrated; can be mechanical connection, or can be electrical connection; can be directly connected, or can be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction of two elements. The specific meaning of the above terms in the present invention can be understood in a specific case by those skilled in the art.

In the description of the present specification, the description of the terms "embodiment", "example" and the like means that a specific feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. . In the present specification, the schematic representation of the above terms does not necessarily mean the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

While the embodiments of the present invention have been shown and described, the embodiments of the invention may The scope of the invention is defined by the claims and their equivalents.

Claims

A refrigerating device, comprising:

Device housing

a soundproof cover, the soundproof cover is disposed in the device casing, the soundproof cover defines a placement cavity, and the soundproof cover is provided with a nozzle;

a compressor, the compressor is disposed in the placement chamber, and a refrigerant pipe of the compressor passes through the nozzle to pass out the soundproof cover;

a first damper foot pad, the first damper foot pad being coupled between the soundproof cover and the device housing.
A refrigerating apparatus according to claim 1, further comprising a second damper foot pad connected between said soundproof cover and said compressor.
A refrigerating apparatus according to claim 1 or 2, wherein said soundproof cover is a rigid material member.
The refrigerating apparatus according to any one of claims 1 to 3, characterized in that at least part of the inner wall surface of the placement chamber is provided with a sound absorbing material layer.
A refrigerating apparatus according to claim 4, wherein said sound absorbing material layer is a porous fiber layer.
The refrigerating apparatus according to any one of claims 1 to 5, wherein a seal member is provided between the refrigerant pipe and the inner peripheral wall of the nozzle.
The refrigerating apparatus according to any one of claims 1 to 6, wherein a sealing layer is provided on an inner peripheral wall of the nozzle and/or an outer surface of the refrigerant pipe.
The refrigerating apparatus according to any one of claims 1 to 7, further comprising a partition plate disposed in the placement chamber to partition the placement chamber into a plurality of sub-chambers The compressor is disposed in one of the sub-chambers.
The refrigerating apparatus according to any one of claims 1 to 8, characterized in that the soundproof cover is provided with a heat exhausting fan for preventing overheating of the compressor.
The refrigerating apparatus according to any one of claims 1 to 9, characterized in that the soundproof cover is provided with a heat sink for preventing overheating of the compressor.