AIR CONDITIONER INDOOR UNIT AND SPLIT-TYPE AIR CONDITIONER

Abstract

An air conditioner indoor unit includes a chassis provided with a first installation position and a second installation position, an indoor heat exchanger provided at the first installation position, a compressor in communication with the indoor heat exchanger and provided at the second installation position, and a first-stage elastic vibration reduction structure and a second-stage elastic vibration reduction structure. An installation foot is provided at a bottom of the compressor and is connected to the chassis. The first-stage elastic vibration reduction structure is provided between the installation foot and the second-stage elastic vibration reduction structure. The second-stage elastic vibration reduction structure is provided between the first-stage elastic vibration reduction structure and the chassis.

Claims

1.-12. (canceled)

13. An air conditioner indoor unit comprising: a chassis provided with a first installation position and a second installation position; an indoor heat exchanger provided at the first installation position; a compressor in communication with the indoor heat exchanger and provided at the second installation position; and a first-stage elastic vibration reduction structure and a second-stage elastic vibration reduction structure; wherein: an installation foot is provided at a bottom of the compressor and is connected to the chassis; the first-stage elastic vibration reduction structure is provided between the installation foot and the second-stage elastic vibration reduction structure; and the second-stage elastic vibration reduction structure is provided between the first-stage elastic vibration reduction structure and the chassis.

14. The air conditioner indoor unit according to claim 13, wherein the first-stage elastic vibration reduction structure includes a rubber pad, a rubber spring, or a rubber-metal composite spring.

15. The air conditioner indoor unit according to claim 13, further comprising: a sound insulation enclosure sleeved outside the compressor.

16. The air conditioner indoor unit according to claim 15, wherein: the second-stage elastic vibration reduction structure includes: a partition connected to the sound insulation enclosure; and an elastic member provided between the partition and the chassis; and the first-stage elastic vibration reduction structure is provided between the installation foot and the partition.

17. The air conditioner indoor unit according to claim 16, wherein the partition includes a metal plate.

18. The air conditioner indoor unit according to claim 16, wherein the elastic member includes a rubber block or a spring.

19. The air conditioner indoor unit according to claim 15, wherein the sound insulation enclosure includes an enclosure body, and a sound absorption layer and a sound insulation layer provided at an inner surface of the enclosure body.

20. The air conditioner indoor unit according to claim 19, wherein: the sound absorption layer is a first sound absorption layer and the sound insulation layer is a first sound insulation layer; the sound insulation enclosure further includes a second sound absorption layer and a second sound insulation layer provided at the inner surface of the enclosure body; and the first sound absorption layer, the second sound absorption layer, the first sound insulation layer, the second sound insulation layer, and the enclosure body are stacked in sequence.

21. The air conditioner indoor unit according to claim 20, wherein the first sound absorption layer includes a micro-perforate layer.

22. The air conditioner indoor unit according to claim 21, wherein: a thickness of the micro-perforate layer ranges from 0.2 mm to 1.5 mm; a perforation diameter of the micro-perforate layer ranges from 0.1 mm to 1 mm; and/or a perforation ratio of the micro-perforate layer ranges from 0.5% to 5%.

23. The air conditioner indoor unit according to claim 20, wherein the second sound absorption layer includes a fiber, foam, or particle porous sound absorption material layer.

24. The air conditioner indoor unit according to claim 20, wherein the first sound insulation layer is configured as a sound insulation felt layer, a glass layer, or a rubber layer.

25. The air conditioner indoor unit according to claim 20, wherein the second sound insulation layer includes a damping material layer;

26. The air conditioner indoor unit according to claim 20, wherein the enclosure body includes a metal enclosure body.

27. The air conditioner indoor unit according to claim 15, wherein: the sound insulation enclosure is provided with an avoidance hole for a pipeline of the compressor to pass through; and a seal is provided between the pipeline and the avoidance hole.

28. The air conditioner indoor unit according to claim 15, wherein a seal is provided between the sound insulation enclosure and the partition.

29. The air conditioner indoor unit according to claim 15, wherein: an installation flange is provided at an outer side of the enclosure body; and the installation flange and the partition are fixed by bolts.

30. The air conditioner indoor unit according to claim 15, wherein the installation foot is connected to the chassis by bolts passing through the partition.

31. The air conditioner indoor unit according to claim 15, wherein the installation foot and the partition are connected by bolts, and the partition is connected to the chassis by bolts.

32. A split-type air conditioner comprising: an air conditioner indoor unit including: a chassis provided with a first installation position and a second installation position; an indoor heat exchanger provided at the first installation position; a compressor in communication with the indoor heat exchanger and provided at the second installation position; and a first-stage elastic vibration reduction structure and a second-stage elastic vibration reduction structure; wherein: an installation foot is provided at a bottom of the compressor and is connected to the chassis; the first-stage elastic vibration reduction structure is provided between the installation foot and the second-stage elastic vibration reduction structure; and the second-stage elastic vibration reduction structure is provided between the first-stage elastic vibration reduction structure and the chassis; and an air conditioner outdoor unit including an outdoor heat exchanger in communication with the compressor and the indoor heat exchanger to form a refrigerant circuit.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the related art, drawings used in the embodiments or in the related art will be briefly described below. Obviously, the drawings in the following description are only some embodiments of the present application. It will be apparent to those skilled in the art that other figures can be obtained according to the structures shown in the drawings without creative work.

[0031] FIG. 1 is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present application.

[0032] FIG. 2 is a schematic structural diagram showing an embodiment where a compressor is provided at a sound insulation enclosure and a chassis.

[0033] FIG. 3 is a schematic cross-sectional view of A-Ain FIG. 2 according to an embodiment of the present application.

[0034] FIG. 4 is a schematic cross-sectional view of A-A in FIG. 2 according to another embodiment of the present application.

DESCRIPTION OF REFERENCE SIGNS

TABLE-US-00001 Reference Reference signs Name signs Name 100 air conditioner 52 sound absorption layer indoor unit 10 chassis 521 first sound absorption layer 20 compressor 522 second sound absorption layer 21 installation foot 53 sound insulation layer 30 first-stage elastic 532 second sound insulation vibration reduction layer structure 40 second-stage elastic 531 first sound insulation vibration reduction layer structure 41 partition 54 avoidance hole 42 elastic member 55 installation flange 50 sound insulation 60 first seal enclosure 51 enclosure body 70 second seal

[0035] The realization of the purposes, functional features and advantages of the present application will be further explained with reference to the accompanying drawings in combination with the embodiments.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application and not all of them. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present application.

[0037] It should be noted that any directional instructions in the embodiments of the present application (such as up, down, left, right, front, rear, etc.) are used merely to explain the relative positional relationships and movements of the components under a specific posture (as shown in the drawings). If the specific posture changes, the directional instructions will correspondingly change as well.

[0038] Additionally, the descriptions of first second and similar terms in the present application are only for illustrative purposes and should not be understood as indicating or implying relative importance, nor do they imply a specific number of technical features. Therefore, a feature defined as first or second may explicitly or implicitly include at least one such feature. Furthermore, the term and/or in the full text includes three options. Taking A and/or B as an example, it includes option A, or option B, or an option that both A and B satisfy. In addition, the technical solutions in the various embodiments can be combined with each other, provided that those skilled in the art can implement such combinations. When technical solutions are contradictory or cannot be implemented when combined, it should be considered that such combinations do not exist and are not within the protection scope of the present application.

[0039] With the improvement of the quality of life, air conditioners have become an indispensable device in family and work life. Split-type air conditioners include indoor units and outdoor units, which are installed indoors and outdoors respectively, and are connected by pipes and wires. A split-type air conditioner typically has one indoor unit paired with one outdoor unit, and it differs from a unitary air conditioner. Indoor units of split-type air conditioners can be wall-mounted, embedded, or floor-standing. They can perform various functions such as cooling, heating, humidifying, dehumidifying, and filtering the air. Generally, split-type air conditioners divide the air conditioner into two parts: the indoor unit and the outdoor unit. The compressor and axial flow fan with relatively large noise are provided in the outdoor unit of the air conditioner. The electrical control circuit components and the indoor side heat exchanger and other indispensable indoor parts are installed in the indoor unit of the air conditioner. The compressor will produce a large noise, and if it is provided at the indoor unit, the user will still find it unbearable, because the existing solutions cannot effectively solve the noise problem caused by placing the compressor in the indoor unit. The conventional split-type air conditioners all adopt the method of external compressor, that is, installed in the outdoor unit of the air conditioner. The compressor noise problem is also the main reason for placing the compressor in the outdoor unit of the air conditioner. However, with the improvement of living standards and the prevalence of high-rise residential areas, the installation process of air conditioners, especially the solution of placing the compressor in the air conditioner outdoor unit, makes the outdoor unit too heavy and inconvenient to install, which requires professional installation and the labor cost is expensive. In some areas, the labor cost is even higher than the cost of the air conditioner. Under such circumstances, if users install the unit themselves in order to save installation costs, it is easy to cause safety accidents.

[0040] In order to allow users to install a lightweight outdoor unit by themselves, the compressor is now moved to the indoor unit. However, for the indoor noise standard requirements, the current vibration and noise reduction measures of the compressor (such as foot pads, sound insulation cotton, sound insulation enclosure, etc.) are no longer sufficient, so a more efficient vibration and noise reduction solution is needed for the compressor. Accordingly, the present application provides a split-type air conditioner, including an air conditioner outdoor unit and an air conditioner indoor unit 100, the air conditioner outdoor unit is provided with an outdoor heat exchanger, and the outdoor heat exchanger is in communication with the compressor 20 and the indoor heat exchanger of the air conditioner indoor unit 100 to form a refrigerant circuit.

[0041] In order to solve the noise problem caused by the air conditioner indoor unit in which a compressor is arranged, the present application makes an improvement to the air conditioner indoor unit. The compressor is installed in the air conditioner indoor unit, and the noise generated by the compressor is reduced.

[0042] Therefore, the air conditioner indoor unit provided in the present application reduces the vibration noise of the compressor located in the air conditioner indoor unit through the first-stage elastic vibration reduction structure 30 and the second-stage elastic vibration reduction structure 40, and greatly reduces the radiation noise of the compressor arranged in the air conditioner indoor unit.

[0043] As shown in FIG. 1 and FIG. 2, in an embodiment of the present application, the air conditioner indoor unit 100 includes a chassis 10, an indoor heat exchanger, a compressor 20, a first-stage elastic vibration reduction structure 30 and a second-stage elastic vibration reduction structure 40. The chassis 10 is provided with a first installation position and a second installation position; the indoor heat exchanger is installed at the first installation position; the compressor 20 is connected to the indoor heat exchanger, the bottom of the compressor 20 has an installation foot 21, the compressor 20 is provided at the second installation position, and the installation foot 21 is connected to the chassis 10. The first-stage elastic vibration reduction structure 30 is located between the installation foot 21 and the second-stage elastic vibration reduction structure 40, and the second-stage elastic vibration reduction structure 40 is located between the first-stage elastic vibration reduction structure 30 and the chassis 10.

[0044] The air conditioner indoor unit 100 includes a rectangular air conditioner housing, which includes a chassis 10. The indoor heat exchanger, the compressor 20, the first-stage elastic vibration reduction structure 30, and the second-stage elastic vibration reduction structure 40 are all installed on the chassis 10. In order to facilitate movement, universal wheels are provided at the lower part of the chassis 10, and the air conditioner housing is provided with communicated air outlets and air inlets. In other embodiments, the air conditioner indoor unit 100 can be in other forms, such as wall-mounted, embedded, etc.

[0045] The vibration generated by the operation of the compressor 20 is first attenuated by the first-stage elastic vibration reduction structure 30, and then transmitted to the chassis 10 of the indoor unit through the second-stage elastic vibration reduction structure 40. The chassis 10 of the air conditioner indoor unit 100 is generally made of sheet metal and other materials with large mass and high density. Such materials are dense, have small vibrations, are difficult to absorb and transmit sound energy, and have strong reflection energy, so they can block sound propagation or weaken transmitted sound energy.

[0046] As shown in FIG. 1 and FIG. 2, the first-stage elastic vibration reduction structure 30 may be a rubber gasket, a rubber spring, or a composite form of rubber and metal spring, etc. The first-stage elastic vibration reduction structure 30 often adopts a material with a large damping coefficient, and converts mechanical energy into heat energy and dissipates it through friction and mutual displacement between molecules of the damping material, thereby attenuating the vibration of the compressor 20 and further reducing structural vibration noise.

[0047] The first-stage elastic vibration reduction structure 30, the second-stage elastic vibration reduction structure 40 and the chassis 10 are arranged in sequence. The second-stage elastic vibration reduction structure 40 can be made of the same elastic cushion layer, rubber cushion or rubber block as the first-stage elastic vibration reduction structure 30, or can be a different combination, such as the first-stage elastic vibration reduction structure 30 is a rubber spring and the second-stage elastic vibration reduction structure 40 is a rubber block. In order to ensure the vibration reduction effect, a partition 41 can be provided between the two vibration reduction structure.

[0048] In the technical solution of the present application, the air conditioner indoor unit includes a chassis 10, an indoor heat exchanger, a compressor 20, a first-stage elastic vibration reduction structure 30 and a second-stage elastic vibration reduction structure 40. The chassis 10 has a first installation position and a second installation position; the indoor heat exchanger is mounted at the first installation position. The compressor 20 is in communication with the indoor heat exchanger, the bottom of the compressor 20 has an installation foot 21, the compressor 20 is placed at the second installation position, and the installation foot 21 is connected to the chassis 10. The first-stage elastic vibration reduction structure 30 is located between the installation foot 21 and the second-stage elastic vibration reduction structure 40, and the second-stage elastic vibration reduction structure 40 is located between the first-stage elastic vibration reduction structure 30 and the chassis 10. The two-stage vibration reduction effect of the first-stage elastic vibration reduction structure 30 and the second-stage elastic vibration reduction structure 40 can greatly attenuate the vibration of the compressor 20 and reduce structural vibration noise.

[0049] In an embodiment, the first-stage elastic vibration reduction structure 30 is configured as a rubber pad or a rubber spring. The first-stage elastic vibration reduction structure 30 and the chassis 10 are limited by bolts to limit the lateral movement of the compressor 20 on the chassis 10 and give a certain amount of movement in the vertical direction, so as to better attenuate the vibration of the compressor 20.

[0050] As shown in FIG. 1 and FIG. 2, in order to better reduce the noise of the air conditioner compressor 20, the air conditioner indoor unit 100 further includes a sound insulation enclosure 50, which is sleeved outside the compressor 20. The sound insulation enclosure 50 can adopt the damping material. For example, a steel plate of the enclosure body is located at the outermost side of the sound insulation barrier, a damping layer is provided at the inner side of the steel plate, and a sound absorption layer is provided on the inner side of the damping layer. For another example, a felt material formed by processing is installed on the outer surface of the compressor 20 of the outdoor unit, and an aluminum plate is further pasted on the outer surface of the felt material, so as to be used as the sound insulation enclosure 50.

[0051] In an embodiment, in order to achieve a better two-stage vibration reduction effect, the second-stage elastic vibration reduction structure 40 includes a partition 41 and an elastic member 42, the partition 41 is connected to the sound insulation enclosure 50, the first-stage elastic vibration reduction structure 30 is located between the installation foot 21 and the partition 41, and the elastic member 42 is located between the partition 41 and the chassis 10. The partition 41 serves as an intermediate transition base, and the vibration of the compressor 20 and the sound insulation enclosure 50 is first transmitted to the partition 41 through the first-stage elastic vibration reduction structure 30 (rubber pad or rubber spring) under the installation foot 21 of the compressor 20, and then the vibration of the partition 41 is transmitted to the chassis 10 through the second-stage elastic vibration reduction structure 40 (rubber block or spring). The two vibration insulation effects can greatly attenuate the vibration of the compressor 20 and the sound insulation enclosure 50, and reduce structural vibration noise.

[0052] The partition 41 is made of a material with large mass and high density, such as a metal plate including a steel plate or an aluminum plate, etc. Such a material is dense, has low vibration, is difficult to absorb and transmit sound energy, and has strong reflection energy, so it can block sound propagation or reduce transmitted sound energy.

[0053] In an embodiment, the elastic member 42 is configured as a rubber block or a spring. The first-stage elastic vibration reduction structure 30 and the second-stage elastic vibration reduction structure 40 both use damping materials, and utilize the friction and mutual displacement between the molecules of the damping material to convert mechanical energy into heat energy for dissipation, thereby attenuating the vibration of the sound insulation enclosure 50, the partition 41 and the compressor 20, and further reducing the structural vibration noise.

[0054] In order to ensure the sound insulation effect, the sound insulation enclosure 50 includes an enclosure body 51, and at least one sound absorption layer 52 and at least one sound insulation layer 53 provided at the inner surface of the enclosure body 51.

[0055] The cavity wall of the sound insulation enclosure 50 includes at least one sound absorption layer 52 and at least one sound insulation layer 53 which are sequentially arranged from the inside to the outside.

[0056] Two, three or even more sound absorption layers 52 may be provided, and the sound insulation layer 53 may be provided between two sound absorption layers 52, or between the sound absorption layer 52 and the enclosure body 51, etc.

[0057] As shown in FIG. 1 and FIG. 2, the sound absorption layer 52 includes a first sound absorption layer 521 and a second sound absorption layer 522, the sound insulation layer 53 includes a first sound insulation layer 531 and a second sound insulation layer 532, and the first sound absorption layer 521, the second sound absorption layer 522, the first sound insulation layer 531, the second sound insulation layer 532 and the enclosure body 51 are stacked in sequence.

[0058] In an embodiment, the first sound absorption layer 521 is configured as a micro-perforate layer. The micro-perforate layer can be a thin plate or film (such as a plastic film such as polyvinyl fluoride (PVF), polyvinyl chloride (PVC), or a polycarbonate (PC) board, acrylic board, gypsum board, and a metal plate such as a stainless steel plate, aluminum plate, etc.), and the noise generated by the compressor 20 is converted from sound energy to heat energy through the air in the microporous of the micro-perforate layer and the fiber holes of the second sound absorption layer 522 due to viscosity and friction, and then dissipated.

[0059] In an embodiment, the micro-perforate layer can flexibly design the acoustic impedance value to improve the sound absorption performance of medium and low frequency noise from 300 Hz to 1000 Hz, so that the vibration insulation enclosure has a good noise reduction effect in the full frequency band.

[0060] In an embodiment, the thickness of the micro-perforate layer ranges from 0.2 mm to 1.5 mm, the diameter of the holes in the micro-perforate layer ranges from 0.1 mm to 1 mm, and the perforation ratio of the micro-perforate layer ranges from 0.5% to 5%. The micro-perforate layer can adjust the acoustic impedance and the resonance frequency by changing its thickness, micro-porous diameter, perforation ratio and the thickness of the second sound absorption layer 522, so as to have good sound absorption performance in the medium and low frequency bands.

[0061] In an embodiment, the second sound absorption layer 522 is configured as a porous sound absorption material layer. The porous sound absorption material layer can be a porous material such as glass fiber, non-woven fiber, needle felt, slag wool, foam plastic, etc. The micro-perforate layer 521 and the second sound absorption layer 522 cooperate to form a good full-band sound absorption composite structure, in which the air will be converted from sound energy to heat energy and then dissipated in the microporous and fiber holes due to viscosity and friction.

[0062] The first sound insulation layer 531 is configured as a sound insulation felt layer, a glass layer or a rubber layer. The enclosure body 51 is configured as a metal cover. Materials with large mass and high density are selected as the sound insulation material layer (such as sound insulation felt, glass, rubber, etc.) and the metal housing layer (such as steel plate, aluminum plate and other metal plates). Such materials are dense, have low vibration, are difficult to absorb and transmit sound energy, and have strong reflection energy, so they can block sound propagation or reduce transmitted sound energy.

[0063] The second sound insulation layer 532 is configured as a damping material layer. The mechanical energy is converted into heat energy and dissipated through the friction and mutual displacement between the molecules of the damping material, thereby attenuating the vibration of the metal housing layer 51, the partition 41 and the compressor 20, thereby reducing the vibration noise. The damping material layer can be a rubber particle layer or a foam particle layer or an anti-vibration rubber layer, which can achieve a better vibration reduction effect. It can be understood that both rubber materials and foam materials have good viscoelastic properties. When the compressor 20 is working, and the vibration generated by the compressor 20 is transmitted to the damping particles, the mechanical energy is converted into heat energy and dissipated through friction and mutual displacement between the particles since the damping particles have good viscoelasticity, which can minimize the vibration transmission of the compressor 20.

[0064] In an embodiment, the composite sound insulation enclosure 50 structure including the micro-perforate layer 521, the second sound absorption layer 522, the first sound insulation layer 531, the second sound insulation layer 532 and the enclosure body 51 can achieve excellent full-band noise reduction effect.

[0065] In order to further improve the sealing performance, vibration reduction performance and sound insulation performance of the sound insulation enclosure 50 after installation, the sound insulation enclosure 50 is provided with an avoidance hole 54 for the pipeline of the compressor 20 to pass through, and a first seal 60 is provided between the pipeline and the avoidance hole 54.

[0066] As shown in FIG. 1 and FIG. 2, the inlet and outlet pipes of the compressor 20 need to extend from the sound insulation enclosure 50. Due to processing errors or size relationships, there will be a gap between the pipes and the avoidance hole 54. The first seal 60 may be an elastic sealing strip, a sealing ring, or a sealant. Providing the first seal 60 may improve the sealing performance of the sound insulation enclosure 50 after installation, and suppress the vibration of the exhaust pipe and the return pipe from being transmitted to the sound insulation enclosure 50.

[0067] In an embodiment, in order to achieve a better sealing effect, a second seal 70 is provided between the sound insulation enclosure 50 and the partition 41. The second seal 70 can reduce the vibration transmitted from the sound insulation enclosure 50 to the partition 41.

[0068] As shown in FIG. 1 and FIG. 2, the outer side of the enclosure body 51 is provided with an installation flange 55, and the installation flange 55 and the partition 41 are fixed by bolts to cooperate with the second seal 70 to achieve a better sealing effect. In addition, it will make assembly easy, simple to operate, and convenient for rapid assembly of the production line. In other embodiments, an annular groove may be provided on the chassis 10, and the edge of the sound insulation enclosure 50 may be inserted into the annular groove.

[0069] In order to ensure the sealing effect of the sound insulation enclosure 50, the partition 41 is connected to the sound insulation enclosure 50, and an installation flange 55 is provided at the outer side of the enclosure body 51. The installation flange 55 and the partition 41 are fixed by bolts; while the connection between the compressor 20 and the chassis 10, and the connection between the partition 41, the elastic member 42 and the chassis 10 have different solutions.

[0070] In an embodiment, the installation foot 21 is connected to the chassis 10 by bolts passing through the partition 41. The first-stage elastic vibration reduction structure 30 is located between the installation foot 21 and the partition 41. The elastic member 42 is arranged under the installation foot 21, and between the partition 41 and the chassis 10. The elastic member 42 can also be located at other positions to be clamped and fixed by the partition 41 and the chassis 10, or fixed by gluing.

[0071] In another embodiment, the installation foot 21 is connected to the partition 41 by bolts, and the partition 41 is connected to the chassis 10 by bolts, and the first-stage elastic vibration reduction structure 30 is located between the installation foot 21 and the partition 41. In this embodiment, the elastic member 42 can be located between the partition 41 and the chassis 10 and connected to the two by bolts. The elastic member 42 can also be located under the installation foot 21 and pressed by the partition 41 and the chassis 10, or fixed by gluing.

[0072] The above descriptions are only some embodiments of the present application, and do not limit the scope of the present application. Under the inventive concept of the present application, equivalent structural transformations made using the contents of the description and drawings of the present application, or direct/indirect application in other related technical fields, are included in the scope of the present application.