Vibration damping device and outdoor unit

Abstract

The utility model relates to the technical field of air conditioners, and provides a vibration isolation device and an outdoor unit. The vibration isolation device is applied to the outdoor unit. The outdoor unit comprises an outdoor unit chassis and an air conditioner compressor. The air conditioner compressor comprises a low-frequency state and a high-frequency state; the vibration isolation device comprises at least one first vibration isolation unit and at least one second vibration isolation unit. The air conditioner compressor is connected with the outdoor unit chassis through the first vibration isolation unit. The second vibration isolation unit is arranged on the outdoor unit chassis and used for abutting against the air conditioner compressor in the low-frequency state and being separated from the air conditioner compressor in the high-frequency state. The air conditioner compressor is used for solving the technical problem of how to reduce vibration of the air conditioner compressor in a low-frequency state on the premise that the outdoor unit shell does not vibrate in a high-frequency state.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to a vibration isolation device and an outdoor unit. Background Art

[0002] The air conditioning compressor plays a key role in promoting the circulation of refrigerant and converting heat energy in the entire cooling / heating process. By continuously circulating this process, effective regulation of indoor temperature is achieved.

[0003] The air-conditioning compressor will generate vibration during operation, which will not only make noise but also affect the connection strength between the air-conditioning compressor and the refrigerant pipeline. Therefore, a vibration isolation device (or foot pad) is usually installed between the bottom of the air-conditioning compressor and the chassis of the outdoor unit casing to reduce the vibration of the air-conditioning compressor. However, in order to improve the energy efficiency of the air-conditioning compressor, the minimum operating frequency of the air-conditioning compressor is constantly decreasing, so that the minimum operating frequency of the air-conditioning compressor has entered the resonance range of the vibration isolation device. Therefore, the air-conditioning compressor will still vibrate under low frequency conditions.

[0004] In the prior art, there are generally two ways to reduce the vibration of the air-conditioning compressor. The first way is to improve the material of the vibration isolation device to increase the damping of the vibration isolation device. Although increasing the damping of the vibration isolation device can reduce the vibration of the air-conditioning compressor in a low-frequency (for example, 5 Hz) state, the air-conditioning compressor will transmit the vibration to the chassis of the external housing in a high-frequency (for example, 100 Hz) state, causing the external housing to vibrate; the second way is to replace the vibration isolation device with a vibration isolation spring. However, the cost of the vibration isolation spring is relatively high and the damping is relatively small. Therefore, the air-conditioning compressor will still vibrate in a low-frequency state. Utility Model Content

[0005] The utility model provides a vibration isolation device and an outdoor unit, which are used to solve the technical problem of how to reduce the vibration of an air-conditioning compressor in a low-frequency state under the premise that the outer machine shell does not vibrate in a high-frequency state.

[0006] The utility model provides a vibration isolation device, which is applied to an outdoor unit. The outdoor unit comprises an outdoor unit chassis and an air-conditioning compressor; the air-conditioning compressor comprises a low-frequency state and a high-frequency state; the vibration isolation device comprises at least a first vibration isolation unit and a second vibration isolation unit; the air-conditioning compressor is connected to the outdoor unit chassis through the first vibration isolation unit; the second vibration isolation unit is arranged on the outdoor unit chassis, and is used to counteract the air-conditioning compressor in the low-frequency state, and is used to separate from the air-conditioning compressor in the high-frequency state.

[0007] According to an embodiment of the present invention, the second vibration isolation unit is located at the bottom of the air-conditioning compressor, and there is a gap between the second vibration isolation unit and the bottom of the air-conditioning compressor.

[0008] According to an embodiment of the present invention, there are a plurality of first vibration isolation units, and the plurality of first vibration isolation units are evenly spaced and arranged along the circumference of the air-conditioning compressor and surround the second vibration isolation unit.

[0009] According to one embodiment of the utility model, the second vibration isolation unit includes a support assembly and a plurality of vibration isolation assemblies; the support assembly is arranged on the chassis of the external unit and is in surface contact with the chassis of the external unit; the plurality of vibration isolation assemblies are arranged on the support assembly and are located between the air-conditioning compressor and the support assembly, and the plurality of vibration isolation assemblies are evenly spaced along the circumference of the air-conditioning compressor and have gaps between them and the bottom of the air-conditioning compressor.

[0010] According to an embodiment of the present utility model, the supporting component is a structural component made of a rigid material; and the vibration isolation component is a structural component made of an elastic material.

[0011] According to one embodiment of the present invention, the number of vibration isolation components is two to five.

[0012] According to one embodiment of the present invention, the support assembly has a material reduction hole.

[0013] According to an embodiment of the utility model, the material reduction hole is arranged on a side of the support assembly facing the chassis of the external unit; a positioning protrusion is arranged on one side of the chassis of the external unit, and the positioning protrusion can be embedded in the material reduction hole.

[0014] The utility model also provides an outdoor unit, comprising an external machine housing, an air-conditioning compressor and a vibration isolation device as described in the above embodiment; the external machine housing comprises an external machine chassis; the air-conditioning compressor is connected to the external machine chassis via the vibration isolation device.

[0015] According to one embodiment of the utility model, the vibration isolation device includes a plurality of first vibration isolation units and a second vibration isolation unit arranged on the chassis of the external unit; the plurality of first vibration isolation units are located at the edge of the air-conditioning compressor, and are evenly spaced along the circumference of the air-conditioning compressor, and surround the second vibration isolation unit; the second vibration isolation unit is located between the air-conditioning compressor and the chassis of the external unit, and has a gap with the bottom of the air-conditioning compressor.

[0016] The characteristics and advantages of the vibration isolation device and outdoor unit of the utility model are:

[0017] The utility model is a unique vibration isolation strategy designed for the differences in vibration characteristics of air-conditioning compressors at different operating frequencies. When the air-conditioning compressor is in the low-frequency (e.g., 5 Hz) operating stage, given the large vibration amplitude at this time, the utility model uses the enhanced damping performance of the combination of the first vibration isolation unit and the second vibration isolation unit to efficiently absorb and attenuate the large-amplitude vibration generated by the air-conditioning compressor, thereby significantly reducing the impact of its low-frequency vibration on the overall structure.

[0018] On the contrary, when the air-conditioning compressor enters the high-frequency (e.g. 100 Hz) operating state, since its vibration amplitude is relatively small but it is easy to cause resonance of the outdoor housing, the second vibration isolation unit in this design specifically removes the effect on the air-conditioning compressor in this state, and completely relies on the first vibration isolation unit for vibration isolation. In this way, the vibration isolation device as a whole presents a lower damping characteristic, which can effectively prevent the transmission of high-frequency vibrations and ensure that the outdoor housing can remain stable even under high-speed operation conditions.

[0019] In general, the utility model successfully solves the technical problem of how to reduce the vibration of the air-conditioning compressor in a low-frequency state through this intelligent adaptive vibration isolation mechanism, while ensuring that the external casing does not vibrate in a high-frequency state. It not only improves the stability of the air-conditioning system and extends its service life, but also reduces operating noise, while avoiding the problems of high cost and limited damping characteristics that may exist in traditional vibration isolation solutions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is an exploded view of the structure of part of the outdoor unit of the utility model.

[0022] Figure 2 It is a three-dimensional diagram of the partial structure of the outdoor unit of the utility model.

[0023] Figure 3 It is a stereoscopic diagram of the vibration isolation device of the utility model when it is arranged on the air-conditioning compressor.

[0024] Figure 4 yes Figure 3 Exploded diagram.

[0025] Figure 5 It is a top view of the vibration isolation device of the utility model when it is arranged on the air-conditioning compressor.

[0026] Figure 6 yes Figure 5 Cross-sectional view along AA direction.

[0027] Figure 7 yes Figure 6 Enlarged view of part B in the middle.

[0028] Figure 8 is a perspective view of an embodiment of a second vibration isolation unit.

[0029] Fig. 9 is a perspective view of another embodiment of the second vibration isolation unit.

[0030] Reference numerals:

[0031] 100. Vibration isolation device; 110. First vibration isolation unit; 120. Second vibration isolation unit; 121. Support assembly; 1210. Material reduction hole; 122. Vibration isolation assembly; 101. Gap; 200. Air conditioning compressor. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In the description of the present embodiment, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present embodiment.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this embodiment, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0035] In this embodiment, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0036] In this embodiment, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0037] Figures 1 to 9 The vibration isolation device 100 and the outdoor unit provided by the utility model are shown. As can be seen from the figure, the vibration isolation device 100 of the utility model is applied to the outdoor unit, and the outdoor unit includes an outdoor unit chassis and an air-conditioning compressor 200; the air-conditioning compressor 200 includes a low-frequency state and a high-frequency state; the vibration isolation device 100 includes at least a first vibration isolation unit 110 and a second vibration isolation unit 120; the air-conditioning compressor 200 is connected to the outdoor unit chassis through the first vibration isolation unit 110; the second vibration isolation unit 120 is arranged on the outdoor unit chassis, and is used to offset the air-conditioning compressor 200 in the low-frequency state, and is used to separate from the air-conditioning compressor 200 in the high-frequency state.

[0038] In specific implementation, the utility model is a unique vibration isolation strategy designed for the difference in vibration characteristics of the air-conditioning compressor 200 at different operating frequencies. When the air-conditioning compressor 200 is in a low-frequency (e.g., 5 Hz) operating stage, given that the vibration amplitude is relatively large at this time, the utility model uses the first vibration isolation unit 110 and the second vibration isolation unit 120 to coordinately activate the damping performance enhanced by the combination of the two to efficiently absorb and attenuate the large-amplitude vibration generated by the air-conditioning compressor 200, thereby significantly reducing the impact of its low-frequency vibration on the overall structure. On the contrary, when the air-conditioning compressor 200 enters a high-frequency (e.g., 100 Hz) operating state, since its vibration amplitude is relatively small but easily causes resonance of the external housing, the utility model is designed to specifically allow the second vibration isolation unit 120 to release the effect on the air-conditioning compressor 200 in this state, and instead completely rely on the first vibration isolation unit 110 for vibration isolation. In this way, the vibration isolation device 100 as a whole presents a lower damping characteristic, which can effectively prevent the transmission of high-frequency vibrations, ensuring that the outdoor housing can remain stable even under high-speed operation conditions. In general, the utility model successfully solves the technical problem of how to reduce the vibration of the air-conditioning compressor 200 in a low-frequency state through this intelligent adaptive vibration isolation mechanism, while ensuring that the external casing does not vibrate in a high-frequency state. It not only improves the stability of the air-conditioning system and extends its service life, but also reduces operating noise. At the same time, it avoids the problems of high cost and limited damping characteristics that may exist in traditional vibration isolation solutions, and embodies the advantages of combining technological innovation with economic benefits.

[0039] It is understandable that in the prior art, when the air-conditioning compressor 200 is running at a low frequency, since the vibration isolation system formed by the air-conditioning compressor 200 and the first vibration isolation unit 110 (foot pad) has multiple (for example, 6th) natural frequencies (generally in the frequency range of 5 Hz to 40 Hz), the air-conditioning compressor 200 will inevitably operate in the resonance frequency band. At this time, the vibration displacement of the air-conditioning compressor 200 in both the horizontal and vertical directions is very large, and the bottom of the air-conditioning compressor 200 will contact the second vibration isolation unit 120 and drive the second vibration isolation unit 120 to vibrate and deform. Since the second vibration isolation unit 120 itself has a high damping, deformation energy consumption will be generated, which can significantly reduce the vibration displacement. When the air-conditioning compressor 200 is running at a high frequency (for example, 40 Hz to 100 Hz), the air-conditioning compressor 200 is a steady-state forced vibration with a small amplitude. The bottom of the air-conditioning compressor 200 will not contact the second vibration isolation unit 120 or the contact force is very small, that is, the vibration of the air-conditioning compressor 200 will not be transmitted to the chassis of the external unit through the second vibration isolation unit 120.

[0040] According to an embodiment of the present invention, the second vibration isolation unit 120 is located at the bottom of the air-conditioning compressor 200 , and a gap 101 is provided between the second vibration isolation unit 120 and the bottom of the air-conditioning compressor 200 .

[0041] In a specific implementation, the second vibration isolation unit 120 may be specifically arranged at the bottom of the air-conditioning compressor 200, with a gap 101 between the second vibration isolation unit 120 and the bottom. Figure 7 As shown, that is, there is a gap 101 under normal conditions. Such a structural design is advantageous in that the air-conditioning compressor 200 can contact the second vibration isolation unit 120 only when it vibrates at a low frequency.

[0042] According to one embodiment of the present utility model, Figure 4 As shown, there are a plurality of first vibration isolation units 110 , and the plurality of first vibration isolation units 110 are evenly spaced and arranged along the circumference of the air-conditioning compressor 200 , and surround the second vibration isolation unit 120 .

[0043] In specific implementation, the above-mentioned structural arrangement enhances the all-round vibration control capability of the air-conditioning compressor 200, thereby achieving a more comprehensive and effective vibration reduction effect.

[0044] According to one embodiment of the present utility model, Figure 8 and Fig. 9 As shown, the second vibration isolation unit 120 includes a support assembly 121 and a plurality of vibration isolation assemblies 122; the support assembly 121 is arranged on the chassis of the external unit and is in surface contact with the chassis of the external unit; the plurality of vibration isolation assemblies 122 are arranged on the support assembly 121 and are located between the air-conditioning compressor 200 and the support assembly 121, and the plurality of vibration isolation assemblies 122 are evenly spaced along the circumference of the air-conditioning compressor 200 and have a gap 101 between them and the bottom of the air-conditioning compressor 200.

[0045] During specific implementation, the support component 121 contacts the chassis of the external unit to provide a stable support foundation; multiple vibration isolation components 122 are evenly arranged along the circumference of the air-conditioning compressor 200 to ensure that vibration energy can be offset and consumed from multiple angles in a low-frequency state.

[0046] In this embodiment, the support assembly 121 is a structural member made of a rigid material (such as plastic); and the vibration isolation assembly 122 is a structural member made of an elastic material (such as rubber).

[0047] In specific implementation, the support component 121 is made of rigid material, and the vibration isolation component 122 is made of elastic material. This material selection ensures that the structure of the support component 121 is stable, and the vibration isolation component 122 has good elastic deformation ability, which can provide ideal damping performance when the air-conditioning compressor 200 vibrates at a low frequency, thereby achieving efficient vibration isolation.

[0048] According to an embodiment of the present invention, the number of the vibration isolation components 122 is two to five.

[0049] In specific implementation, the number of vibration isolation components 122 is two to five. The design of this number range can not only meet the actual vibration isolation needs, but also take into account the compactness of the structure and cost control, so that the vibration isolation device 100 achieves a balance between practicality and economy.

[0050] According to one embodiment of the present invention, the support assembly 121 has a material reduction hole 1210 .

[0051] In a specific implementation, the support assembly 121 has a material reduction hole 1210, which helps to reduce the use of materials and thus reduce production costs.

[0052] According to an embodiment of the present invention, the material reduction hole 1210 is arranged on the side of the support assembly 121 facing the external machine chassis; a positioning protrusion is provided on one side of the external machine chassis, and the positioning protrusion can be embedded in the material reduction hole 1210 .

[0053] In specific implementation, the material reduction hole 1210 can cooperate with the positioning protrusion on the external machine chassis to form an embedded installation, which improves the assembly accuracy and stability between the vibration isolation device 100 and the external machine chassis, and is also conducive to simplifying the installation process and enhancing the fixing reliability of the vibration isolation device 100.

[0054] According to one embodiment of the present invention, the second vibration isolation unit 120 may be cylindrical.

[0055] In specific implementation, the above structural setting can increase the rigidity and improve the vibration reduction effect.

[0056] According to one embodiment of the present utility model, Figure 4 Combined with Figure 1 As shown, the shape of the bottom surface of the second vibration isolation unit 120 can match the shape of the chassis of the external machine, and the bottom surface of the second vibration isolation unit 120 fits the top surface of the chassis of the external machine to achieve positioning.

[0057] In specific implementation, by making the bottom surface of the second vibration isolation unit 120 contact the top surface of the external chassis, positioning is achieved by matching the shapes of the bottom surface of the second vibration isolation unit 120 and the top surface of the external chassis, without the need to set a separate positioning protrusion, and by fitting them together, the contact area can be increased and the connection strength can be improved.

[0058] In addition, the second vibration isolation unit 120 can play a buffering and limiting role when the outdoor unit package falls during transportation, thereby improving the elasticity of the foot pad, thereby achieving a lower vibration isolation frequency of the air-conditioning compressor 200.

[0059] The utility model also provides an outdoor unit, including an external machine housing, an air-conditioning compressor 200 and the vibration isolation device 100 of the above embodiment; the external machine housing includes an external machine chassis; the air-conditioning compressor 200 is connected to the external machine chassis through the vibration isolation device 100.

[0060] In a specific implementation, by applying the vibration isolation device 100 to the outdoor unit, the outdoor unit can effectively isolate the vibration of the air-conditioning compressor 200, thereby improving the running stability of the whole unit, reducing the noise level, and extending the service life of the air-conditioning system.

[0061] In this embodiment, the vibration isolation device 100 includes a plurality of first vibration isolation units 110 and a second vibration isolation unit 120 arranged on the chassis of the external unit; the plurality of first vibration isolation units 110 are located at the edge of the air-conditioning compressor 200, and are evenly spaced along the circumference of the air-conditioning compressor 200, and surround the second vibration isolation unit 120; the second vibration isolation unit 120 is located between the air-conditioning compressor 200 and the chassis of the external unit, and has a gap 101 between the second vibration isolation unit 120 and the bottom of the air-conditioning compressor 200.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or mode are included in at least one embodiment or mode of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or modes in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or modes described in this specification and the features of the different embodiments or modes, without contradiction.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A vibration isolation device, characterized in that: Applied to an outdoor unit, the outdoor unit comprises an outdoor unit chassis and an air-conditioning compressor (200); the air-conditioning compressor (200) comprises a low-frequency state and a high-frequency state; the vibration isolation device comprises at least a first vibration isolation unit (110) and a second vibration isolation unit (120); The air-conditioning compressor (200) is connected to the external unit chassis via the first vibration isolation unit (110); The second vibration isolation unit (120) is arranged on the chassis of the external unit, and is used to abut against the air-conditioning compressor (200) in the low-frequency state, and is used to separate from the air-conditioning compressor (200) in the high-frequency state.

2. The vibration isolation device according to claim 1, characterized in that: The second vibration isolation unit (120) is located at the bottom of the air-conditioning compressor (200), and a gap (101) is provided between the second vibration isolation unit (120) and the bottom of the air-conditioning compressor (200).

3. The vibration isolation device according to claim 2, characterized in that: There are a plurality of the first vibration isolation units (110), and the plurality of the first vibration isolation units (110) are evenly spaced and arranged along the circumference of the air-conditioning compressor (200) and surround the second vibration isolation unit (120).

4. The vibration isolation device according to any one of claims 1 to 3, characterized in that: The second vibration isolation unit (120) comprises a support component (121) and a plurality of vibration isolation components (122); The support assembly (121) is arranged on the chassis of the external machine and is in surface contact with the chassis of the external machine; A plurality of the vibration isolation components (122) are arranged on the support component (121) and are located between the air-conditioning compressor (200) and the support component (121); the plurality of the vibration isolation components (122) are evenly spaced along the circumference of the air-conditioning compressor (200) and have a gap (101) between the components and the bottom of the air-conditioning compressor (200).

5. The vibration isolation device according to claim 4, characterized in that: The support assembly (121) is a structural member made of a rigid material; The vibration isolation component (122) is a structural component made of elastic material.

6. The vibration isolation device according to claim 4, characterized in that: The number of the vibration isolation components (122) is two to five.

7. The vibration isolation device according to claim 4, characterized in that: The support assembly (121) has a material reduction hole (1210).

8. The vibration isolation device according to claim 7, characterized in that: The material reduction hole (1210) is arranged on a side of the support assembly (121) facing the external machine chassis; A positioning protrusion is provided on one side of the outer machine chassis, and the positioning protrusion can be embedded in the material reduction hole (1210).

9. An outdoor unit, characterized in that: It comprises an external machine housing, an air conditioning compressor (200) and a vibration isolation device as claimed in any one of claims 1 to 8; The external machine housing includes an external machine chassis; The air-conditioning compressor (200) is connected to the external unit chassis via the vibration isolation device.

10. The outdoor unit according to claim 9, characterized in that: The vibration isolation device comprises a plurality of first vibration isolation units (110) and second vibration isolation units (120) arranged on the chassis of the external machine; A plurality of first vibration isolation units (110) are located at the edge of the air-conditioning compressor (200), are evenly spaced and arranged along the circumference of the air-conditioning compressor (200), and surround the second vibration isolation unit (120); The second vibration isolation unit (120) is located between the air-conditioning compressor (200) and the external unit chassis, and has a gap (101) between the second vibration isolation unit (120) and the bottom of the air-conditioning compressor (200).

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