Sound insulation and damping structure for a compressor and heat pump device

Abstract

This utility model discloses a sound insulation and vibration damping structure for a compressor and a heat pump device, relating to the technical field of heat pump devices. The sound insulation and vibration damping structure for a compressor includes a chassis mechanism and a noise reduction enclosure. The chassis mechanism includes a primary support plate and elastic primary vibration damping feet. Sound insulation cotton is installed inside the noise reduction enclosure and covers the compressor and chassis mechanism. The chassis mechanism provides elastic support for the compressor, effectively buffering and absorbing high-frequency vibrations from the compressor and blocking the transmission path of compressor vibrations. This not only effectively reduces the impact of compressor vibrations on the heat pump device, helping to prevent loosening or fatigue damage to components within the heat pump device due to long-term vibration, but also, in conjunction with the noise reduction enclosure, effectively suppresses the transmission of noise generated by compressor vibrations, thus helping to solve the environmental interference problems caused by heat pumps.

Description

Technical Field

[0001] This utility model relates to the field of heat pump equipment, and in particular to a sound insulation and vibration reduction structure for a compressor and a heat pump device. Background Technology

[0002] In today's society, with the increasing demand for energy conservation, environmental protection, and comfortable indoor environments, heat pump heating equipment, as a highly efficient and energy-saving heating method, has been widely used in various fields such as homes, businesses, and industries. The compressor, as the core component of a heat pump device, works by having the high-pressure liquid refrigerant evaporate into a gaseous state in the evaporator after passing through the expansion valve, absorbing a large amount of heat energy from the air. The gaseous refrigerant is then compressed by the compressor into a high-temperature, high-pressure liquid state, which then enters the condenser to release heat, thus achieving the purpose of heating.

[0003] However, in daily use of heat pumps, it has been found that the compressor inevitably generates vibration and noise during operation, and referring to... Figure 1 Since the compressor 2 is usually installed directly on the heat pump frame 1, the compressor 2 will directly drive the entire heat pump to vibrate when it is working through vibration transmission. The resulting vibration and noise will not only affect the installation stability and service life of the heat pump equipment components, but also interfere with the surrounding environment. Utility Model Content

[0004] In order to reduce the loosening of parts or environmental interference in heat pump equipment caused by compressor vibration or noise, this application provides a sound insulation and vibration reduction structure for compressors and heat pump equipment.

[0005] Firstly, the sound insulation and vibration damping structure for a compressor provided in this application adopts the following technical solution: A sound insulation and vibration damping structure for a compressor, comprising: The compressor is mounted in the heat pump's equipment frame via the chassis mechanism. The chassis mechanism includes a primary support plate and elastic primary shock-absorbing feet. The compressor is mounted on the primary support plate, and the primary shock-absorbing feet are located on the bottom side of the primary support plate and are connected to the heat pump's equipment frame. A noise reduction enclosure is provided, which covers the compressor and the chassis mechanism and is connected to the heat pump equipment frame to enclose the compressor. Sound insulation cotton is provided inside the noise reduction enclosure.

[0006] By adopting the above technical solutions, it is possible not only to effectively reduce the impact of the vibration generated by the compressor during normal operation on the equipment frame or other components of the heat pump, and to prevent the parts inside the heat pump equipment from loosening or fatigue damage due to long-term vibration, which is conducive to improving the safety and service life of the equipment, but also to form a sound and vibration separation system in conjunction with the noise reduction enclosure, which can effectively suppress the transmission of noise generated by compressor vibration.

[0007] Optionally, the chassis mechanism further includes a secondary shock absorption assembly, through which the compressor is suspended directly above the primary support plate; The secondary damping assembly includes several sets of floating supports, several sets of secondary damping feet, and connectors. The several sets of floating supports are evenly arranged on the periphery of the bottom of the compressor. The several sets of secondary damping feet correspond to the several sets of floating supports. The connectors are used to connect the primary support plate, the secondary damping feet, and the floating supports.

[0008] Optionally, the primary shock-absorbing foot and the secondary shock-absorbing foot are solid rubber pads, air cushion springs, or spring-damped shock absorbers.

[0009] By adopting the above technical solution, the chassis mechanism can buffer the high-frequency vibration of the compressor through multi-stage shock-absorbing feet, effectively blocking the transmission path of compressor vibration toward the equipment frame of the heat pump, which is conducive to reducing the mechanical vibration transmission rate.

[0010] Optionally, the number of primary damping supports is not less than the number of secondary damping supports, and the primary damping supports and the secondary damping supports are staggered in the vertical direction.

[0011] By adopting the above technical solutions, the uniformity and stability of the chassis structure can be effectively improved, which helps to prevent unstable support caused by excessive fatigue of the primary and secondary shock-absorbing feet due to severe vibration of the compressor.

[0012] Optionally, the connector includes a connecting screw and a connecting nut. The connecting screw extends vertically upward from the bottom side of the primary support plate and passes through and connects the primary support plate, the secondary shock-absorbing foot, and the suspension support in sequence. The connecting nut is located on the side of the suspension support opposite to the secondary shock-absorbing foot and is threadedly connected to the connecting screw.

[0013] By adopting the above technical solution, even if the connecting screw and connecting nut separate due to the severe vibration of the compressor, the connecting screw will fall vertically onto the equipment frame due to gravity, making it easy for staff to find during routine maintenance.

[0014] Optionally, the suspension support has a connecting hole, and the top of the secondary shock-absorbing foot is provided with a rubber connecting rivet. The connecting rivet passes through the connecting hole and engages with the suspension support. By passing through the connecting rivet, the suspension support passes through the connecting hole and connects with the suspension support.

[0015] By adopting the above technical solution, even if the connecting screw and connecting nut separate due to severe vibration of the compressor, the secondary vibration damping foot can still maintain its connection with the suspension bracket through the connecting rivet at the end, temporarily maintaining the connection between the secondary vibration damping foot and the suspension bracket, and still providing vibration damping support. In addition, since there is a rubber connecting rivet between the connecting screw and the suspension bracket, the connecting rivet can further block the transmission path of compressor vibration towards the equipment frame of the heat pump, which helps to reduce noise caused by vibration.

[0016] Optionally, the noise reduction cover has a double-layer structure, comprising an outer shell and an inner shell, with the sound insulation cotton filling the space between the outer shell and the inner shell.

[0017] By adopting the above technical solution, the double-layer noise reduction enclosure can effectively improve its sound insulation and noise reduction effect, which is conducive to solving the environmental interference problem caused by the noise generated by the compressor.

[0018] Optionally, the bottom of the noise reduction cover is provided with a honeycomb air inlet plate, the honeycomb air inlet plate is provided with several sets of air inlet channels, the air inlet channels are in the shape of a zigzag line, and the inner wall of the air inlet channels is provided with sound insulation cotton. The top of the noise reduction enclosure is equipped with an exhaust fan, and the exhaust fan has sound-absorbing louvers on its air outlet side.

[0019] By adopting the above technical solutions, the noise reduction enclosure can both insulate and reduce the noise of the compressor and ensure its heat dissipation requirements, thus preventing problems such as heat accumulation and damage caused by poor heat dissipation. At the same time, the zigzag-shaped air inlet duct and sound-absorbing louvers effectively prevent noise from escaping from the honeycomb air inlet panel or exhaust fan.

[0020] Secondly, the heat pump device provided in this application adopts the following technical solution: A heat pump device includes the aforementioned sound insulation and vibration damping structure for a compressor.

[0021] In summary, the technical solution of this application has at least one of the following beneficial effects: 1. By using a multi-stage damping chassis mechanism to support the compressor, the high-frequency vibration of the compressor can be buffered, and the transmission path of the compressor vibration toward the heat pump equipment frame can be effectively blocked. This helps to reduce the mechanical vibration transmission rate and prevent the parts inside the heat pump equipment from loosening or fatigue damage caused by long-term vibration.

[0022] 2. By adopting a noise reduction enclosure with a double-layer partition structure and a multi-stage vibration damping chassis structure, a sound and vibration separation system can be formed, which can effectively suppress the spread of noise caused by compressor vibration.

[0023] 3. By installing honeycomb air inlet panels and exhaust fans on the noise reduction enclosure, the sound insulation and noise reduction effect of the noise reduction enclosure can be ensured, while improving the internal heat dissipation performance of the noise reduction enclosure. This helps prevent problems such as heat accumulation and damage to the compressor due to heat dissipation difficulties.

[0024] 4. By setting a zigzag-shaped air inlet duct in the honeycomb air inlet panel and setting sound-absorbing louvers on the air outlet side of the exhaust fan, noise can be effectively reduced from escaping from the honeycomb air inlet panel or the exhaust fan along the air inlet duct. Attached Figure Description

[0025] Figure 1 This is a structural schematic diagram of a heat pump device in the prior art.

[0026] Figure 2 This is a schematic diagram of a sound insulation and vibration damping structure for a compressor according to Embodiment 1 of this application.

[0027] Figure 3 yes Figure 2 A magnified view of part a.

[0028] Figure 4 This is a front view of a noise reduction cover for a compressor sound insulation and vibration damping structure according to Embodiment 1 of this application.

[0029] Figure 5 This is a front view of a noise reduction cover for a compressor sound insulation and vibration damping structure according to Embodiment 2 of this application.

[0030] Figure 6 yes Figure 5 A magnified view of part b in the image.

[0031] Explanation of reference numerals in the attached figures: 1. Equipment frame; 2. Compressor; 3. Chassis mechanism; 31. Primary support plate; 32. Primary shock-absorbing feet; 33. Secondary shock-absorbing components; 331. Floating support lugs; 332. Secondary shock-absorbing feet; 333. Connecting screws; 334. Connecting nuts; 4. Noise reduction enclosure; 41. Outer shell; 42. Inner shell; 421. Sound-absorbing wall; 43. Sound insulation cotton; 45. Honeycomb air inlet panel; 451. Air inlet duct; 46. Exhaust fan; 461. Sound-absorbing louvers; 47. Resonance wall; 471. Sound transmission hole; 48. Resonance cavity. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0033] Example 1 Embodiment 1 of this application discloses a heat pump device, including a device frame 1 and a compressor 2 installed on the device frame 1.

[0034] Embodiment 1 of this application discloses a sound insulation and vibration damping structure for a compressor 2. (Refer to...) Figure 2 and Figure 3 A sound insulation and vibration damping structure for compressor 2, applicable to the aforementioned heat pump equipment, includes a chassis mechanism 3 and a noise reduction enclosure 4. The chassis mechanism 3 mounts the compressor 2 onto the equipment frame 1 of the heat pump equipment and blocks the transmission path of compressor 2 vibration to the equipment frame 1. The noise reduction enclosure 4 covers the periphery of the compressor 2 and the chassis mechanism 3, physically blocking the outward diffusion of vibration noise generated by the compressor 2. Through the cooperation of the chassis mechanism 3 and the noise reduction enclosure 4, the vibration impact of the compressor 2 on the equipment frame 1 during normal operation can be effectively reduced, preventing loosening or fatigue damage to other components in the heat pump equipment due to long-term vibration, thus improving the operational safety and service life of the heat pump equipment.

[0035] Reference Figure 2 and Figure 3 The chassis mechanism 3 is a multi-stage damping structure, including a primary support plate 31, primary damping feet 32, and a secondary damping assembly 33. The primary damping feet 32 ​​are located on the bottom side of the primary support plate 31 and connected to the equipment frame 1 of the heat pump. The primary support plate 31 is mounted on the equipment frame 1 via the primary damping feet 32, while the compressor 2 is suspended directly above the primary support plate 31 via the secondary damping assembly 33. The primary damping feet 32 ​​can be selected from solid rubber pads, air cushion springs, or spring-damped shock absorbers. In this embodiment, an air cushion spring is specifically selected for the primary damping feet 32.

[0036] Reference Figure 2 and Figure 3Specifically, the secondary damping assembly 33 includes several sets of suspended supports 331, secondary damping feet 332, and connectors. The sets of suspended supports 331 are fixedly installed on the bottom outer wall of the compressor 2 and evenly distributed along the bottom periphery of the compressor 2. The secondary damping feet 332 correspond to the sets of suspended supports 331. The connectors connect the primary support plate 31, the secondary damping feet 332, and the suspended supports 331, thereby achieving the suspended installation of the compressor 2. The secondary damping feet 332 can also be selected from solid rubber pads, air springs, or spring-damped shock absorbers. Since the secondary damping feet 332 are used to directly suspend the compressor 2, in order to reduce the weight of the compressor 2 and the compression and fatigue effects on the secondary damping feet 332 during vibration, in this embodiment, solid rubber pads with high density, good support performance, and good energy absorption performance are selected for the secondary damping feet 332.

[0037] Furthermore, in this embodiment, a high-pressure liquid receiver is also provided around the compressor 2. Therefore, in order to ensure that the chassis mechanism 3 can evenly support the compressor 2 and improve the support stability of the compressor 2, the number of first damping legs is no less than that of second damping legs, and the first damping legs and second damping legs are staggered in the vertical direction. Specifically, in this embodiment, a total of three sets of suspended lugs 331 and second damping legs are provided around the compressor 2, and a total of five sets of first damping legs are provided between the primary support plate 31 and the equipment frame 1 of the heat pump, and are evenly distributed on the bottom side of the primary support plate 31 according to the center of gravity of the compressor 2 and the high-pressure liquid receiver.

[0038] Reference Figure 2 and Figure 3 The connector includes a connecting screw 333 and a connecting nut 334. Specifically, in this embodiment, the connecting screw 333 extends vertically upward from the bottom side of the primary support plate 31, and passes through it to connect the primary support plate 31, the secondary shock-absorbing foot 332, and the suspension lug 331. The connecting nut 334 is located on the side of the suspension lug 331 opposite to the secondary shock-absorbing foot 332 and is threadedly connected to the connecting screw 333.

[0039] Furthermore, the suspension support 331 has a connecting hole, and the top of the secondary shock-absorbing support 332 is provided with a rubber connecting rivet. The connecting rivet passes through the connecting hole and engages with the suspension support 331. The connecting screw 333 passes through the connecting rivet to achieve connection through the connecting hole of the suspension support 331 and connect with the suspension support 331. Even if the connecting screw 333 and the connecting nut 334 separate due to severe vibration of the compressor 2, the connecting screw 333 will fall vertically onto the equipment frame 1 due to gravity, making it easy for staff to spot during routine maintenance. At this time, the secondary shock-absorbing support 332 can still maintain its connection with the suspension support 331 through the connecting rivet at its end, ensuring a continuous connection between the secondary shock-absorbing support 332 and the suspension support 331. Simultaneously, because the connecting screw 333 and the suspension support 331 are separated by the rubber connecting rivet, the connecting rivet can further block the transmission path of the compressor 2 vibration towards the heat pump equipment frame 1, reducing noise generated by vibration.

[0040] Reference Figure 2 and Figure 4 In this embodiment, the noise reduction cover 4 has a double-layer structure. Specifically, the noise reduction cover 4 includes an outer shell 41, an inner shell 42, and sound insulation cotton 43, wherein the sound insulation cotton 43 fills the space between the outer shell 41 and the inner shell 42. The sound insulation cotton 43 is specifically made of rubber and plastic sound insulation cotton 43, and the filling thickness of the sound insulation cotton 43 is not less than 20mm.

[0041] Reference Figure 2 and Figure 4 The inner shell 42 is also provided with a sound-absorbing wall 421 on the side facing the compressor 2. The sound-absorbing wall 421 is composed of triangular pyramidal geometric shapes arranged in a periodic staggered pattern.

[0042] Reference Figure 2 and Figure 4 The noise reduction cover 4 is also equipped with a convection heat dissipation device. A honeycomb air inlet plate 45 is provided at the bottom of one side of the noise reduction cover 4, and an exhaust fan 46 is provided at the top of the noise reduction cover 4 opposite to the honeycomb air inlet plate 45. Thus, the noise reduction cover 4 can achieve overall convection heat dissipation by the principle of hot air rising.

[0043] Specifically, the honeycomb air inlet panel 45 has several sets of zigzag-shaped air inlets 451, and the inner wall of the air inlet 451 is also provided with sound insulation cotton 43. The exhaust fan 46 is provided with sound-absorbing louvers on the air outlet side, which can effectively reduce noise from escaping from the honeycomb air inlet panel 45 or from the exhaust fan 46 along the air inlet 451.

[0044] The implementation principle of the sound insulation and vibration damping structure for compressor 2 in Embodiment 1 of this application is as follows: In Example 1, a multi-stage damping chassis support is used to suspend and support the compressor 2, so that there is no direct connection between the compressor 2 and the heat pump equipment frame 1. High-frequency vibration is buffered by using a first-stage damping support 32 and a second-stage damping support 332 with high elasticity and damping, thus blocking the transmission path of the compressor 2 vibration toward the equipment frame 1.

[0045] In addition, the noise reduction enclosure 4 with a double-layer partition structure, combined with the sound insulation cotton 43 of the core layer, can suppress the escape and diffusion of compressor 2 noise through physical blocking. In conjunction with the honeycomb air inlet plate 45 and exhaust fan 46 set in the noise reduction enclosure 4, it can form a sound vibration separation effect while ensuring the heat dissipation requirements of compressor 2, which is conducive to suppressing the propagation of noise.

[0046] Example 2 Embodiment 2 of this application discloses a sound insulation and vibration damping structure for a compressor 2. (Refer to...) Figure 5 and Figure 6 The difference from Embodiment 1 lies in the different noise reduction cover 4.

[0047] In this embodiment, the noise-reducing cover 4 has a multi-layered structure. Specifically, refer to... Figure 6 The noise reduction enclosure 4 includes an outer shell 41 and several layers of resonating walls 47 disposed inside the outer shell 41. Several sound transmission holes 471 are evenly opened on the resonating walls 47, and the sound transmission holes 471 of adjacent resonating walls 47 are staggered. Resonating cavities 48 are formed between adjacent resonating walls 47, and the spacing of the resonating cavities 48 gradually increases towards the wall of the outer shell 41. Sound insulation cotton 43 is filled between the outer shell 41 and the adjacent resonating walls 47.

[0048] The implementation principle of the sound insulation and vibration damping structure for compressor 2 in Embodiment 2 of this application is as follows: Example 2 uses a noise reduction enclosure 4 with multiple layers of resonating walls 47 to achieve sound insulation and noise reduction. Specifically, when noise is transmitted to the resonating walls 47, the surfaces of several layers of staggered sound transmission holes 471 can generate a viscous friction effect, which can convert the high-frequency sound energy in the noise into heat energy and achieve sound absorption and noise reduction. In addition, the Helmholtz resonator effect is formed by the air vibration in the resonating cavity 48 and the resonance of the resonating walls 47, which can absorb and reduce noise for specific mid-frequency sound energy. Combined with the sound insulation and noise reduction of the sound insulation cotton 43, the noise reduction enclosure 4 can have excellent sound insulation and noise reduction effect.

[0049] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this specific embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A sound insulation and vibration damping structure for a compressor, characterized by, include: The chassis mechanism (3) is used to install the compressor (2) in the equipment frame (1) of the heat pump. The chassis mechanism (3) includes a primary support plate (31) and a primary shock-absorbing foot (32) with elasticity. The compressor (2) is installed on the primary support plate (31). The primary shock-absorbing foot (32) is located on the bottom side of the primary support plate (31) and is connected to the equipment frame (1) of the heat pump. Noise reduction enclosure (4) is provided around the compressor (2) and the chassis mechanism (3), and is connected to the heat pump equipment frame (1) to enclose the compressor (2). The noise reduction enclosure (4) has a double-layer structure. The noise reduction enclosure (4) includes an outer shell (41), an inner shell (42) and sound insulation cotton (43). The sound insulation cotton (43) is filled between the outer shell (41) and the inner shell (42). The inner shell (42) facing the compressor (2) is also provided with a sound-absorbing wall (421). The sound-absorbing wall (421) is composed of periodically staggered triangular pyramidal geometric shapes. The bottom of the noise reduction cover (4) is provided with a honeycomb air inlet plate (45), the honeycomb air inlet plate (45) is provided with several sets of air inlet channels (451), the air inlet channels (451) are in the shape of a zigzag line, and the inner wall of the air inlet channel (451) is provided with sound insulation cotton (43). The top of the noise reduction cover (4) is provided with an exhaust fan (46), and the exhaust fan (46) is provided with a sound-absorbing louver (461) on the air outlet side.

2. The sound insulation and vibration damping structure for a compressor according to claim 1, characterized by: The chassis mechanism (3) also includes a secondary shock absorption assembly (33), and the compressor (2) is suspended above the primary support plate (31) through the secondary shock absorption assembly (33); The secondary damping component (33) includes several sets of floating supports (331), several sets of secondary damping feet (332), and connectors. Several sets of floating supports (331) are evenly arranged on the periphery of the bottom of the compressor (2). Several sets of secondary damping feet (332) correspond to several sets of floating supports (331). The connectors are used to connect the primary support plate (31), the secondary damping feet (332), and the floating supports (331).

3. A sound insulation and vibration damping structure for a compressor according to claim 2, characterized in that: The number of primary damping feet (32) is not less than that of secondary damping feet (332), and the primary damping feet (32) and the secondary damping feet (332) are staggered in the vertical direction.

4. The sound-proofing and shock-absorbing structure for a compressor according to claim 2, characterized by: The connector includes a connecting screw (333) and a connecting nut (334). The connecting screw (333) extends vertically upward from the bottom side of the primary support plate (31) and passes through and connects the primary support plate (31), the secondary shock-absorbing foot (332), and the suspension lug (331) in sequence. The connecting nut (334) is located on the side of the suspension lug (331) away from the secondary shock-absorbing foot (332) and is threadedly connected to the connecting screw (333).

5. A sound insulation and vibration damping structure for a compressor according to claim 4, characterized in that: The suspended support (331) has a connecting hole, and the top of the secondary shock-absorbing foot (332) is provided with a rubber connecting rivet. The connecting rivet passes through the connecting hole and is engaged with the suspended support (331). By passing through the connecting rivet, it is possible to pass through the connecting hole of the suspended support (331) and connect with the suspended support (331).

6. A heat pump apparatus, characterized by, Including a sound insulation and vibration damping structure for a compressor as described in any one of claims 1-5.

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