Air conditioner indoor unit and air conditioner system

Abstract

The invention provides an air conditioner indoor unit and an air conditioner system. The indoor unit comprises a shell; the liquid pipe is partially located in the shell, the liquid pipe comprises a first pipe section and a second pipe section which are connected, the first pipe section penetrates through the shell, the first pipe section is obliquely arranged towards the second pipe section from the exterior of the shell, and the first pipe section is at least provided with a first bent part; the fixing structure is used for fixing the liquid pipe on the shell; a refrigerant flows into the liquid pipe from an inlet of the first pipe section, and the first bent part is arranged between the inlet of the first pipe section and the fixing structure in the flowing direction of the refrigerant in the liquid pipe; according to the air conditioner indoor unit, pulse impact generated by a refrigerant on the liquid pipe at the fixing structure is reduced, so that the vibration amplitude of the liquid pipe at the fixing structure is reduced, and low-frequency noise caused by the fact that vibration is transmitted to the indoor unit shell is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning equipment, and in particular to an air conditioning indoor unit and an air conditioning system. Background Art

[0002] The air conditioning system consists of an outdoor unit and an indoor unit. The outdoor unit and the indoor unit are connected by a liquid pipe and a gas pipe. The liquid refrigerant flows from the outdoor unit to the indoor unit in the liquid pipe. The gas evaporated by the indoor unit evaporator flows to the outdoor unit through the gas pipe. A diverter is usually provided on the liquid pipe to divert the refrigerant flowing in the liquid pipe. Figure 1 As shown, for the current indoor unit structure, a bending structure 14 is usually provided between the inlet of the liquid pipe 11 and the diverter 13 in the shell 12, and the bending part is usually provided with a fixing structure for fixing the liquid pipe 11 to the indoor unit shell 12.

[0003] When the liquid refrigerant in the liquid pipe flows through the bend, the force of the refrigerant impacting the liquid pipe will increase significantly due to the sudden change in angle, causing the liquid pipe to vibrate significantly; since the liquid pipe and the indoor unit housing are fixed together, the above vibration is quickly transmitted to the indoor unit housing through the above fixing structure, causing the housing to vibrate and radiate low-frequency noise. Therefore, how to reduce the low-frequency noise caused by the above vibration transmission is a problem currently faced.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present invention, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] In view of this, the present invention provides an air-conditioning indoor unit and an air-conditioning system, which reduce the pulse impact of the refrigerant on the liquid pipe at the fixed structure, thereby reducing the low-frequency noise caused by the vibration transmitted to the indoor unit housing.

[0006] According to one aspect of the present invention, there is provided an air conditioner indoor unit, comprising:

[0007] case;

[0008] a liquid pipe, partly located in the shell, the liquid pipe comprising a first pipe section and a second pipe section connected to each other, the first pipe section passing through the shell, and the first pipe section being inclined from the outside of the shell toward the second pipe section, and the first pipe section being provided with at least a first bending portion; and

[0009] A fixing structure is used to fix the liquid pipe on the shell; the refrigerant flows into the liquid pipe from the inlet of the first pipe section, and along the flow direction of the refrigerant in the liquid pipe, the first bending portion is arranged between the inlet of the first pipe section and the fixing structure.

[0010] Optionally, a second bending portion is formed at a connection between the first pipe segment and the second pipe segment, and the fixing structure is arranged at the second bending portion; the first bending portion is arranged between an entrance of the first pipe segment and the second bending portion.

[0011] Optionally, a damping member is circumferentially wrapped around the outer periphery of the first bending portion.

[0012] Optionally, the air conditioner indoor unit also includes an evaporator, the evaporator is located in the shell, and the liquid pipe is connected to the evaporator; the evaporator includes an evaporator body, a diversion pipe and a diversion head, the diversion pipe is respectively connected to the diversion head and the evaporator body, and the diversion head is also connected to the second pipe section of the liquid pipe.

[0013] Optionally, a side wall of the shell is provided with an inlet hole, the first pipe section of the liquid pipe penetrates into the shell from the inlet hole, and the first bending portion bends from the first pipe section toward a direction away from the inlet hole.

[0014] Optionally, the first bending portion includes a first bending section, a second bending section and a first arc-shaped connecting portion connected between the first bending section and the second bending section; the first bending section is located on the first tube section, and the second bending section is bent from the first tube section toward a direction away from the inlet hole.

[0015] Optionally, the first arc-shaped connecting portion is bent to form a first bending angle, and the first bending angle is greater than 90°.

[0016] Optionally, the first bending portion is a "U"-shaped structure.

[0017] Optionally, the damping element is cement.

[0018] According to another aspect of the present invention, there is provided an air conditioning system, comprising any one of the above-mentioned air conditioning indoor units.

[0019] The beneficial effects of the present invention compared with the prior art are:

[0020] The air-conditioning indoor unit and air-conditioning system provided by the present invention achieve a bend in advance before the liquid refrigerant flows through the fixed structure by setting a first bending portion between the fixed structure and the refrigerant inlet of the liquid pipe, thereby reducing the pulse impact of the refrigerant on the liquid pipe at the fixed structure, thereby reducing the vibration amplitude of the liquid pipe at the fixed structure and reducing the low-frequency noise caused by the vibration transmitted to the indoor unit casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings herein are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present invention, and together with the specification are used to explain the principles of the present invention. Obviously, the accompanying drawings described below are only some embodiments of the present invention, and for those of ordinary skill in the art, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0022] Figure 1 It is a schematic diagram of the structure of an air conditioner indoor unit in the prior art;

[0023] Figure 2 A partial cross-sectional structural diagram of an air conditioner indoor unit disclosed in one embodiment of the present invention;

[0024] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of the local area A;

[0025] Figure 4 A partial schematic diagram of an air conditioner indoor unit disclosed in one embodiment of the present invention;

[0026] Figure 5 A schematic diagram of the structure of an air conditioning system disclosed in one embodiment of the present invention;

[0027] Reference numerals

[0028] 21. Shell; 22. Liquid pipe; 23. First pipe section; 24. Second pipe section; 25. First bending portion; 26. Second bending portion; 27. Inlet hole; 28. First bending section; 29. ​​Second bending section; 30. Diverter; 31. Diverter pipe; 32. Indoor unit; 33. Outdoor unit; 34. Air pipe; DETAILED DESCRIPTION

[0029] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that the present invention will be comprehensive and complete, and the concept of example embodiments will be fully conveyed to those skilled in the art. The described features, structures, or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of the specific details, or other methods, materials, devices, etc. may be adopted. In other cases, known technical solutions are not shown or described in detail to avoid blurring various aspects of the present disclosure. The same reference numerals in the figures represent the same or similar structures, and thus their detailed descriptions will be omitted.

[0030] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including", "having" and "having" are used to express an open-ended inclusive meaning and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.

[0031] like Figures 2 to 4 As shown, an embodiment of the present invention discloses an air conditioner indoor unit. The air conditioner indoor unit includes a shell 21, a liquid pipe 22, an evaporator (not shown in the drawings) and a fixing structure (not shown in the drawings). The liquid pipe 22 is connected to the evaporator. The evaporator and the fixing structure are located in the shell 21. The liquid pipe 22 passes through the shell 21 from the outside of the shell 21. That is, part of the liquid pipe 22 is located in the shell 21. Specifically, in this embodiment, the side wall of the shell 21 is provided with an inlet hole 27, and the first pipe section 23 of the liquid pipe 22 penetrates into the shell 21 from the inlet hole 27.

[0032] In this embodiment, the liquid pipe 22 includes a first pipe section 23 and a second pipe section 24 connected to each other. Specifically, the first pipe section 23 passes through the housing 21, and the first pipe section 23 is provided with at least a first bending portion 25. The first pipe section 23 is inclined from the outside of the housing 21 toward the end of the second pipe section 24, so that a second bending portion 26 is formed at the connection between the first pipe section 23 and the second pipe section 24.

[0033] In this embodiment, the fixing structure is used to fix the liquid pipe 22 to the housing 21. The fixing structure is disposed at the second bending portion 26 of the liquid pipe 22. That is, the location of the fixing structure corresponds to the location of the second bending portion 26.

[0034] The refrigerant flows into the liquid pipe 22 from the inlet of the first pipe section 23. Along the flow direction of the refrigerant in the liquid pipe 22, the first bend 25 is arranged between the inlet of the first pipe section 23 and the fixed structure. That is, the first bend 25 is arranged between the inlet of the first pipe section 23 and the projection of the fixed structure on the liquid pipe 22. During the flow, the refrigerant flows along the first pipe section 23, first flows through the first bend 25, then flows through the second bend 26, and enters the second pipe section 24 of the liquid pipe 22. The first bend 25 is arranged between the inlet of the first pipe section 23 and the second bend 26. In this embodiment, the first bend 25 bends from the first pipe section 23 toward a direction away from the inlet hole 27.

[0035] In this embodiment, the evaporator includes an evaporator body, a flow dividing pipe 31 and a flow dividing head 30. Figure 4The above-mentioned flow dividing pipe 31 is connected to the above-mentioned flow dividing head 30 and the evaporator body respectively, and the above-mentioned flow dividing head 30 is also connected to the second pipe section 24 of the above-mentioned liquid pipe 22. The above-mentioned flow dividing head 30 is used to divide the refrigerant flowing out of the liquid pipe 22 into multiple flow dividing pipes 31.

[0036] In this embodiment, the first bending portion 25 includes a first bending section 28, a second bending section 29 and a first arc-shaped connecting portion connected between the first bending section 28 and the second bending section 29. The first bending section 28 is located on the first pipe section 23, and the second bending section 29 is bent from the first pipe section 23 toward a direction away from the inlet hole 27. The first arc-shaped connecting portion is bent to form a first bending angle. In a preferred embodiment, the first bending angle is greater than 90°. This helps to reduce the pulse impact of the refrigerant on the liquid pipe 22 at the fixed structure, improve the vibration transmission loss, and thus help to reduce the low-frequency noise caused by the vibration transmission to the indoor unit housing 21.

[0037] In some optional embodiments, the first bending portion 25 further includes a third bending section connected to the second bending section 29. The angle between the third bending section and the second bending section 29 is also greater than 90°. This is also conducive to reducing the low-frequency noise caused by the vibration transmitted to the indoor unit housing 21. In a preferred embodiment, the angle between the extension direction of the third bending section and the extension direction of the second pipe section 24 of the liquid pipe 22 is an acute angle, which is also conducive to reducing the pulse impact of the refrigerant on the liquid pipe 22 at the fixed structure.

[0038] In some optional embodiments, the second bending portion 26 includes a third bending section, a fourth bending section, and a second arc-shaped connecting portion connected between the third bending section and the fourth bending section. The third bending section is located on the first pipe section 23, and the second arc-shaped connecting portion is bent to form a second bending angle, and the second bending angle is greater than 90°. This is conducive to reducing the pulse impact of the refrigerant on the liquid pipe 22 at the fixed structure, improving the vibration transmission loss, and thus helping to reduce the low-frequency noise caused by the vibration transmission to the indoor unit housing 21.

[0039] The present invention does not limit the specific values ​​of the first bending angle and the second bending angle, and those skilled in the art may determine them as needed.

[0040] In a preferred embodiment, the first bending portion 25 is a "U"-shaped structure; and / or the second bending portion 26 is a "V"-shaped structure. This is conducive to reducing the pulse impact of the refrigerant on the liquid pipe 22 at the fixed structure, improving the vibration transmission loss, thereby reducing the vibration amplitude of the liquid pipe 22 at the fixed structure, reducing the low-frequency noise caused by the vibration transmission to the indoor unit housing 21, and achieving the reduction of the low-frequency gurgling sound of the indoor unit.

[0041] In this embodiment, a damping member (not shown in the drawings) is wrapped around the outer periphery of the first bent portion 25. In some optional embodiments, the damping member is clay, that is, the first bent portion 25 is wrapped with clay. The provision of the damping member can reduce the vibration speed of the wall of the liquid pipe 22, thereby facilitating the reduction of the low-frequency noise caused by the vibration transmitted to the indoor unit housing 21.

[0042] In a preferred embodiment, the thickness of the above-mentioned cement is 1 mm to 5 mm. This is further conducive to reducing the vibration speed of the wall of the liquid pipe 22; thereby helping to reduce the low-frequency noise caused by the vibration transmitted to the indoor unit housing 21. It should be noted that the present invention does not limit the material of the above-mentioned damping member and the thickness of the cement.

[0043] Since the air conditioner indoor unit is located near the side wall inlet hole 27, such as the lower space of the indoor cabinet, the internal space is relatively large, that is, there is a relatively large available space at this location, which can be conveniently arranged with cement, and is conducive to reducing the vibration speed of the wall of the liquid pipe 22. Therefore, in a preferred embodiment, the first bent portion 25 is provided at a position on the first bent portion 25 close to the inlet hole 27. This solves the problem that the space is too small to wrap the cement, or the shock absorption effect is poor due to the contact of the pipeline.

[0044] The technical solution of the present invention can be applied to indoor units whose compressor type is a rolling rotor compressor or a scroll compressor. Moreover, the indoor unit can be an indoor cabinet unit or an indoor hanging unit. The drawings provided in the embodiments of the present invention are for the case where the type is an indoor cabinet unit. However, the present invention is not limited to this.

[0045] It should be noted that, since part of the shell blocks the structural details of the internal liquid pipe, for the convenience of schematically illustrating the liquid pipe structure, the embodiment of the present invention provides Figure 1 and Figure 4 A portion of the shell is hidden, that is, the portion below the shell is hidden.

[0046] like Figure 5 As shown, an embodiment of the present invention further provides an air conditioning system, which includes an outdoor unit 33 and an air conditioning indoor unit 32 described in any of the above embodiments. The detailed structural features and advantages of the air conditioning indoor unit 32 can be referred to the description of the above embodiments, which will not be repeated here.

[0047] The outdoor unit 33 is connected to the indoor unit 32 through the liquid pipe 22 and the gas pipe 34, and the liquid refrigerant flows from the outdoor unit 33 to the indoor unit 32 in the liquid pipe 22. The gas evaporated by the evaporator of the indoor unit 32 flows to the outdoor unit 33 through the gas pipe 34. A diverter is usually provided on the liquid pipe 22 to divert the refrigerant flowing in the liquid pipe 22.

[0048] In summary, the air-conditioning indoor unit and air-conditioning system provided by the present invention have at least the following advantages:

[0049] The air-conditioning indoor unit and air-conditioning system disclosed in the above-mentioned embodiments of the present invention achieve a bend in advance before the liquid refrigerant flows through the fixed structure by setting a first bending portion between the fixed structure and the refrigerant inlet of the liquid pipe, thereby reducing the pulse impact of the refrigerant on the liquid pipe at the fixed structure and improving the vibration transmission loss, thereby reducing the vibration amplitude of the liquid pipe at the fixed structure and reducing the low-frequency noise caused by the vibration transmission to the indoor unit casing, thereby reducing the low-frequency gurgling sound of the indoor unit.

[0050] In the description of the present invention, it should be understood that the terms "bottom", "longitudinal", "lateral", "upper", "lower", "front", "rear", "vertical", "horizontal", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the structure or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more, and "several" means one or more.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0052] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. An air conditioner indoor unit, characterized in that: include: Housing (21); a liquid pipe (22), partly located in the shell (21), the liquid pipe (22) comprising a first pipe section (23) and a second pipe section (24) connected to each other, the first pipe section (23) passing through the shell (21), and the first pipe section (23) being arranged obliquely from the outside of the shell (21) toward the second pipe section (24), and the first pipe section (23) being provided with at least a first bending portion (25); and A fixing structure is used to fix the liquid pipe (22) on the shell (21); the refrigerant flows into the liquid pipe (22) from the inlet of the first pipe section (23), and along the flow direction of the refrigerant in the liquid pipe (22), the first bending portion (25) is arranged between the inlet of the first pipe section (23) and the fixing structure.

2. The air conditioner indoor unit according to claim 1, characterized in that: A second bending portion (26) is formed at the connection between the first pipe section (23) and the second pipe section (24), and the fixing structure is arranged at the second bending portion (26); the first bending portion (25) is arranged between the entrance of the first pipe section (23) and the second bending portion (26).

3. The air conditioner indoor unit according to claim 1, characterized in that: The outer periphery of the first bent portion (25) is circumferentially wrapped with a damping member.

4. The air conditioner indoor unit according to claim 1, characterized in that: The air conditioner indoor unit also includes an evaporator, the evaporator is located in the shell (21), and the liquid pipe (22) is connected to the evaporator; the evaporator includes an evaporator body, a diversion pipe (31) and a diversion head (30), the diversion pipe (31) is respectively connected to the diversion head (30) and the evaporator body, and the diversion head (30) is also connected to the second pipe section (24) of the liquid pipe (22).

5. The air conditioner indoor unit according to claim 1, characterized in that: The side wall of the shell (21) is provided with an inlet hole (27), the first pipe section (23) of the liquid pipe (22) penetrates into the shell (21) from the inlet hole (27), and the first bent portion (25) bends from the first pipe section (23) in a direction away from the inlet hole (27).

6. The air conditioner indoor unit according to claim 5, characterized in that: The first bending portion (25) comprises a first bending section (28), a second bending section (29) and a first arc-shaped connecting section connected between the first bending section (28) and the second bending section (29); the first bending section (28) is located on the first tube section (23), and the second bending section (29) is bent from the first tube section (23) in a direction away from the inlet hole (27).

7. The air conditioner indoor unit according to claim 6, characterized in that: The first arc-shaped connecting portion is bent to form a first bending angle, and the first bending angle is greater than 90°.

8. The air conditioner indoor unit according to claim 1, characterized in that: The first bending portion (25) is a "U"-shaped structure.

9. The air conditioner indoor unit according to claim 3, characterized in that: The damping element is cement.

10. An air conditioning system, characterized in that: The air conditioning system comprises an air conditioning indoor unit according to any one of claims 1 to 9.

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