A composite noise-absorbing and vibration-damping chassis for heat pumps

Abstract

This invention relates to the field of shock absorber technology, specifically to a composite noise-absorbing and vibration-damping chassis for heat pumps. The chassis includes a chassis body with a frame fixedly mounted on its bottom surface. It also includes a compressor vibration damping seat and a noise-dampening cover. The compressor vibration damping seat is fixedly mounted on the upper surface of the chassis body. The noise-dampening cover has a rectangular, hollow, bottomless structure and is detachably mounted on the outside of the compressor vibration damping seat. The compressor vibration damping seat in this invention can achieve both rigid and flexible connections. Therefore, a rigid connection can be used during transportation to maintain the stability of the compressor, while a flexible connection can be used during use to reduce resonance and thus reduce noise generation.

Description

Technical Field

[0001] This invention relates to the field of shock absorber technology, specifically to a composite noise-absorbing and vibration-damping chassis for heat pumps. Background Technology

[0002] An air source heat pump, as a highly efficient and energy-saving heating and cooling device, mainly consists of a compressor, expansion valve, evaporator, and condenser. Among them, the compressor, as the core component of the heat pump, is usually installed on a chassis inside the unit.

[0003] However, during operation, the internal mechanical moving parts of the compressor inevitably vibrate. This vibration not only generates noise but also transmits vibrational energy to the surrounding environment through the compressor's base and connected pipes, potentially causing resonance. Once resonance occurs, the vibration amplitude of the chassis increases dramatically, further amplifying the noise. This noise not only interferes with the user's living and working environment but also, continuous resonance and strong vibration place additional stress on the various components of the air source heat pump, accelerating wear and tear and reducing the equipment's lifespan.

[0004] To address the aforementioned resonance problem, existing technologies typically employ flexible connections between the compressor and the mounting chassis, such as rubber damping pads or spring dampers. These flexible connections effectively buffer the vibration energy transmitted from the compressor to the chassis, thereby reducing noise generation. However, due to the elastic nature of flexible connections, the compressor cannot be as stable after installation as a rigid connection. During transport, especially on bumpy roads, the compressor can shake violently due to the flexible connection. This shaking can damage delicate internal components of the compressor. Simultaneously, the piping connected to the compressor experiences additional stress due to the compressor's shaking. These pipes, typically made of copper, are prone to deformation and rupture under repeated stress, leading to refrigerant leakage. Therefore, this invention proposes a composite noise-absorbing and vibration-damping chassis for heat pumps to effectively solve these problems. Summary of the Invention

[0005] The purpose of this invention is to provide a composite noise-absorbing and vibration-damping chassis for heat pumps, which solves the problems mentioned in the background art.

[0006] This invention is achieved through the following technical solution: a composite noise-absorbing and vibration-damping chassis for heat pumps, comprising a chassis body, wherein a frame is fixedly mounted on the bottom surface of the chassis body, and further comprising:

[0007] The compressor shock absorber is fixedly mounted on the upper surface of the chassis body;

[0008] The noise reduction cover is a rectangular hollow bottomless structure, and the noise reduction cover is detachably installed on the outside of the compressor vibration damping base;

[0009] The compressor shock absorber includes a fixed seat and a movable seat located above the fixed seat. The fixed seat is fixedly connected to the chassis body. The fixed seat is also connected to the movable seat through an elastic element. The movable seat and the fixed seat are detachably fixedly connected. The top surface of the movable seat is also provided with several positioning posts, which are used to connect to the compressor.

[0010] Optionally, the surface of the chassis body is formed with a plurality of first protrusions and a plurality of second protrusions, and the surface of the chassis body is also provided with a plurality of drainage holes.

[0011] Optionally, the noise reduction cover includes a cover body, the inner surface of which is provided with a sound-absorbing cotton layer, and the outer surface of which is provided with a damping layer.

[0012] Optionally, the fixed seat has a circular hollow, coverless structure, and the movable seat has a circular hollow, bottomless structure, with the outer diameter of the movable seat matching the inner diameter of the fixed seat.

[0013] Optionally, the elastic element is a damping spring, with its two ends connected to a fixed seat and a movable seat, respectively; when the damping spring is not subjected to external force, the fixed seat and the movable seat do not contact each other.

[0014] Optionally, the movable seat has notches on both sides, and a locking block is provided in the notch. The fixed seat has slots on both sides. When the locking block is engaged in the slot, the bottom end of the movable seat abuts against the inner bottom surface of the fixed seat.

[0015] Optionally, the top surface of the movable seat is provided with a first sliding groove corresponding to the positioning post, a first slider is slidably disposed in the first sliding groove, the top surface of the first slider is provided with a second sliding groove, a second slider is slidably disposed in the second sliding groove, the first sliding groove and the second sliding groove are perpendicular to each other, and the positioning post is fixedly disposed on the top surface of the second slider.

[0016] Optionally, the two ends of the first slider are respectively connected to the inner wall of the first slide groove by springs, and the two ends of the second slider are respectively connected to the inner wall of the second slide groove by springs.

[0017] Optionally, the bottom surface of the first slider is provided with a first through hole, the bottom surface of the first slide groove is provided with a second through hole, and the bottom surface of the second slider is provided with a positioning groove. In the natural state, the first through hole, the second through hole and the positioning groove are aligned and distributed.

[0018] The bottom surface of the fixed base is provided with limiting posts that correspond one-to-one with the positioning grooves. When the card block is engaged inside the slot, the top of the limiting post is embedded in the positioning groove.

[0019] Optionally, the outer ring wall of the fixing seat is provided with a plurality of connecting ears, and the fixing seat is fixedly connected to the chassis body through the connecting ears.

[0020] Compared with the prior art, the present invention provides a composite noise-absorbing and vibration-damping chassis for heat pumps, which has the following beneficial effects:

[0021] 1. The compressor vibration damping base in this invention can achieve both rigid and flexible connections. Therefore, a rigid connection can be used to keep the compressor stable during transportation, while a flexible connection can be used in use to reduce resonance and thus reduce noise.

[0022] 2. When switching between rigid and flexible connections, the compressor shock absorber in this invention can be switched simply by pressing the locking block or the movable seat, which greatly improves the flexibility of switching between rigid and flexible connections;

[0023] 3. The chassis body of the present invention has a bulge, and a sound damping cover is provided outside the compressor vibration damping seat. The bulge can suppress the vibration of the chassis, and the sound damping cover can block the transmission of noise. Therefore, the present invention can further reduce the noise generated when the heat pump is in use. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the compressor shock absorber structure of the present invention;

[0026] Figure 3 This is a schematic diagram of another state of the compressor shock absorber base of the present invention;

[0027] Figure 4 This is a schematic diagram of the compressor shock absorber base of the present invention in disassembled state;

[0028] Figure 5 This is a schematic diagram of the chassis body structure of the present invention;

[0029] Figure 6 This is a schematic diagram of the sound-absorbing cover structure of the present invention;

[0030] Figure 7 for Figure 3 Enlarged view of point A in the middle.

[0031] In the diagram: 100, chassis body; 101, first convex bulge; 102, second convex bulge; 103, drain hole; 200, frame; 300, compressor shock absorber seat; 301, fixed seat; 302, movable seat; 303, elastic element; 304, positioning post; 305, connecting ear; 306, locking block; 307, bayonet; 308, first sliding groove; 309, first slider; 310, second sliding groove; 311, second slider; 312, positioning groove; 313, limiting post; 400, sound damping cover; 401, cover body; 402, sound-absorbing cotton layer; 403, damping layer. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please see Figure 1 - Figure 7 This application proposes a composite noise-absorbing and vibration-damping chassis for heat pumps, including a chassis body 100, with a frame 200 fixedly mounted on the bottom surface of the chassis body 100. Specifically, the chassis body 100 is made of 2mm thick galvanized steel plate, while the frame 200 includes two main crossbeams and three secondary crossbeams. The secondary crossbeams are fixedly connected between the two main crossbeams, wherein the main crossbeams are 30mm high and the secondary crossbeams are 10mm high. The chassis body 100 and the main crossbeams are fixedly connected by bolts.

[0034] Furthermore, the surface of the chassis body 100 is formed with several first protrusions 101 and several second protrusions 102, and the surface of the chassis body 100 is also provided with several drainage holes 103. The first protrusions 101 and the second protrusions 102 are both formed by stamping, and the height of the protrusions is 10mm. Compared with traditional large flat chassis, the protrusion design can effectively reduce the resonance amplitude; and the design of the frame 200 can also improve the bending strength of the chassis body 100, effectively suppressing resonance.

[0035] This embodiment also includes a compressor vibration damping seat 300, which is fixedly mounted on the upper surface of the chassis body 100. The compressor vibration damping seat 300 includes a fixed seat 301 and a movable seat 302 located above the fixed seat 301. The fixed seat 301 is fixedly connected to the chassis body 100, and the fixed seat 301 is also connected to the movable seat 302 through an elastic element 303. The movable seat 302 is detachably fixedly connected to the fixed seat 301. The top surface of the movable seat 302 is also provided with several positioning posts 304, which are used to connect with the compressor. Specifically, there are three positioning posts 304, which are used to cooperate with the mounting feet at the bottom of the compressor and are fixed by bolts.

[0036] This embodiment also includes a noise reduction cover 400, which is a rectangular hollow bottomless structure. The noise reduction cover 400 is detachably installed on the outside of the compressor vibration damping base 300. Obviously, when the compressor is fixedly installed on the top of the movable base 302, the compressor can be covered inside by the noise reduction cover 400, thereby blocking the transmission of noise.

[0037] Specifically, the noise reduction enclosure 400 includes an enclosure body 401, with a sound-absorbing cotton layer 402 on the inner surface of the enclosure body 401 and a damping layer 403 on the outer surface of the enclosure body 401. The enclosure body 401 is made of 2mm thick aluminum plate, the sound-absorbing cotton layer 402 is made of 11.5mm thick glass wool or polyester fiber composite material, and the damping layer 403 is made of 2mm thick butyl rubber material. Additionally, to improve the noise reduction effect, in practice, a layer of sound-absorbing cotton can also be wrapped around the outside of the compressor.

[0038] The following is a detailed description of the compressor vibration damping mount 300:

[0039] The fixed seat 301 has a circular, hollow, capless structure, and the movable seat 302 has a circular, hollow, bottomless structure. The outer diameter of the movable seat 302 is matched with the inner diameter of the fixed seat 301. Both the fixed seat 301 and the movable seat 302 are made of aluminum alloy. Furthermore, the outer ring wall of the fixed seat 301 is provided with several connecting ears 305. The fixed seat 301 is fixedly connected to the chassis body 100 by bolts through the connecting ears 305.

[0040] On the other hand, the elastic element 303 is a damping spring, with its two ends connected to the fixed seat 301 and the movable seat 302, respectively. When the damping spring is not subjected to external forces, the fixed seat 301 and the movable seat 302 do not contact each other. The phrase "not subjected to external forces" means that the damping spring is only subjected to the downward pressure of the movable seat 302 and the compressor on it. In this case, the fixed seat 301 and the movable seat 302 are vertically elastically connected, and the damping spring can achieve a good buffering and shock absorption effect.

[0041] Furthermore, notches are provided on both sides of the movable seat 302, and locking blocks 306 are provided in the notches. The locking blocks 306 and the movable seat 302 are integrally formed. The slots 307 are provided on both sides of the fixed seat 301. When the locking blocks 306 are engaged in the slots 307, the bottom end of the movable seat 302 abuts against the inner bottom surface of the fixed seat 301. That is to say, when the user applies vertical downward pressure to the movable seat 302, the bottom of the movable seat 302 can gradually extend into the inside of the fixed seat 301 until the bottom end of the movable seat 302 is in contact with the inner bottom surface of the fixed seat 301, at which point the locking blocks 306 are precisely embedded in the slots 307.

[0042] In another embodiment of this application, the top surface of the movable seat 302 is provided with a first slide groove 308 corresponding to the positioning post 304. A first slider 309 is slidably disposed within the first slide groove 308. A second slide groove 310 is provided on the top surface of the first slider 309. A second slider 311 is slidably disposed within the second slide groove 310. The first slide groove 308 and the second slide groove 310 are perpendicular to each other. The positioning post 304 is fixedly disposed on the top surface of the second slider 311. It is worth mentioning that the length direction of the plurality of first slide grooves 308 is consistent, and the direction of the plurality of second slide grooves 310 is also consistent. Since the first slide grooves 308 and the second slide grooves 310 are perpendicularly distributed, the second slider 311 can move in any direction within the horizontal range.

[0043] Furthermore, both ends of the first slider 309 are connected to the inner wall of the first slide groove 308 via springs, and both ends of the second slider 311 are connected to the inner wall of the second slide groove 310 via springs. It should be noted that the springs at both ends of the first slider 309 are fixedly connected to the first slider 309, and the springs at both ends of the second slider 311 are fixedly connected to the second slider 311. In its natural state, the first slider 309 is located in the middle position inside the first slide groove 308, and the second slider 311 is located in the middle position inside the second slide groove 310.

[0044] Furthermore, the bottom surface of the first slider 309 is provided with a first through hole, the bottom surface of the first sliding groove 308 is provided with a second through hole, and the bottom surface of the second slider 311 is provided with a positioning groove 312. In the natural state, the first through hole, the second through hole, and the positioning groove 312 are aligned. The bottom surface of the fixed seat 301 is provided with limiting posts 313 corresponding to the positioning grooves 312. When the locking block 306 is engaged inside the locking slot 307, the top of the limiting post 313 is embedded in the positioning groove 312, and the position of the positioning post 304 is fixed. When the damping spring is not subjected to external force, and the fixed seat 301 and the movable seat 302 are not in contact, such as Figure 3As shown, at this time, the top of the limiting post 313 does not penetrate the first through hole and the second through hole, and the top of the limiting post 313 has a gap of not less than 20mm with the inner top surface of the movable seat 302, so that the movable seat 302 will not collide with the limiting post 313 when vibrating.

[0045] It is worth mentioning that when the locking block 306 disengages from the locking slot 307, the movable seat 302 will spring upwards a certain distance under the action of the elastic element 303. Since the compressor needs to connect to external piping, in this embodiment, the compressor's refrigerant inlet and outlet need to be connected to the external copper pipe via a short rubber tube to provide a buffering and shock-absorbing effect for the compressor. Furthermore, this short rubber tube can be made of fluororubber, with a length of approximately 20mm. Fluororubber is resistant to high temperatures and corrosion, with a maximum temperature resistance of over 250℃, making it fully capable of withstanding the high-temperature and high-pressure refrigerant corrosion.

[0046] This embodiment can switch between a hard and soft connection of the compressor through the compressor shock absorber 300. A hard connection is used during transportation to ensure the stability of the compressor; a soft connection is used during use to achieve a flexible connection of the compressor and reduce noise generated by vibration.

[0047] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A composite sound-damping and shock-absorbing chassis for heat pumps, comprising a chassis body (100), a rack (200) being fixedly arranged on the bottom surface of the chassis body (100), characterized in that, Also include: The compressor damping seat (300) is fixedly arranged on the upper surface of the chassis body (100); The sound cover (400) is a hollow bottom structure, and the sound cover (400) is detachably covered outside the compressor damping seat (300); Wherein, the compressor damping seat (300) includes a fixed seat (301) and a movable seat (302) above the fixed seat (301), the fixed seat (301) is fixedly connected with the chassis body (100), the fixed seat (301) is connected with the movable seat (302) through the elastic element (303), the movable seat (302) is detachably fixedly connected with the fixed seat (301), and the top surface of the movable seat (302) is provided with a plurality of positioning columns (304); the positioning column (304) is used for connecting with the compressor; The elastic element (303) adopts a damping spring, and the two ends of the damping spring are connected with the fixed seat (301) and the movable seat (302) respectively; when the damping spring is not subjected to external force of the system, the fixed seat (301) and the movable seat (302) are not in contact; The opposite sides of the movable seat (302) are provided with notches, and the notches are provided with clamping blocks (306); the opposite sides of the fixed seat (301) are provided with clamping holes (307), when the clamping block (306) is clamped in the clamping hole (307), the bottom end of the movable seat (302) abuts with the inner bottom surface of the fixed seat (301); The top surface of the movable seat (302) is provided with a first sliding groove (308) corresponding to the positioning column (304), the first sliding groove (308) is slidably provided with a first sliding block (309), the top surface of the first sliding block (309) is provided with a second sliding groove (310), the second sliding groove (310) is slidably provided with a second sliding block (311), the first sliding groove (308) and the second sliding groove (310) are perpendicular, and the positioning column (304) is fixedly arranged on the top surface of the second sliding block (311); The two ends of the first sliding block (309) are connected with the inner wall of the first sliding groove (308) through springs respectively, and the two ends of the second sliding block (311) are connected with the inner wall of the second sliding groove (310) through springs respectively; The bottom surface of the first sliding block (309) is provided with a first through hole, the bottom surface of the first sliding groove (308) is provided with a second through hole, and the bottom surface of the second sliding block (311) is provided with a positioning groove (312); in the natural state, the first through hole, the second through hole and the positioning groove (312) are aligned; The bottom surface of the fixed seat (301) is provided with a limiting column (313) corresponding to the positioning groove (312), when the clamping block (306) is clamped in the clamping hole (307), the top end of the limiting column (313) is embedded in the positioning groove (312).

2. A composite sound and shock absorbing chassis for a heat pump as defined in claim 1, wherein: The surface of the chassis body (100) is upwardly convexly formed with a plurality of first convexes (101) and a plurality of second convexes (102), and the surface of the chassis body (100) is further provided with a plurality of drainage holes (103).

3. A composite sound and shock absorbing chassis for a heat pump as defined in claim 1, wherein: The sound reduction cover (400) comprises a cover body (401), the inner surface of the cover body (401) is provided with a sound-absorbing cotton layer (402), and the outer surface of the cover body (401) is provided with a damping layer (403).

4. A composite sound and shock absorbing chassis for a heat pump as claimed in any one of claims 1 to 3, characterised in that: The fixed seat (301) is in a circular hollow structure without a cover, and the movable seat (302) is in a circular hollow structure without a bottom.

5. A composite sound and shock absorbing chassis for a heat pump as defined in claim 1, wherein: The outer ring wall of the fixed seat (301) is provided with a plurality of connecting ears (305), and the fixed seat (301) is fixedly connected with the chassis body (100) through the connecting ears (305).

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