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, and the first pipe section is obliquely arranged towards the second pipe section from the exterior of the shell, so that a bent part is formed at the joint of the first pipe section and the second pipe section; a refrigerant flows into the liquid pipe from the inlet of the first pipe section, a filter is arranged between the inlet of the first pipe section and the bent part in the flowing direction of the refrigerant, a metal net is arranged in the filter, and an included angle is formed between the plane where the metal net is located and the flowing direction of the refrigerant; according to the air conditioner indoor unit, when a refrigerant flows to the bent part, the pulse impact amplitude generated by the refrigerant to the liquid pipe can be reduced more continuously, and therefore low-frequency noise caused by the fact that vibration of a pipeline 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 amplitude of the refrigerant on the liquid pipe, 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 to form a bend at the connection between the first pipe section and the second pipe section;

[0009] The refrigerant flows into the liquid pipe from the inlet of the first pipe section. Along the flow direction of the refrigerant, a filter is provided between the inlet of the first pipe section and the bending portion. A metal mesh is provided in the filter. The plane where the metal mesh is located forms an angle with the flow direction of the refrigerant.

[0010] Optionally, the plane where the metal mesh is located is perpendicular to the flow direction of the refrigerant.

[0011] Optionally, the mesh diameter of the metal mesh is less than 0.5 mm.

[0012] Optionally, the indoor unit further comprises a fixing structure, which is used to fix the liquid pipe to the shell, and the fixing structure is arranged at the bending portion; the filter is located between the inlet of the first pipe section and the fixing structure.

[0013] Optionally, a damping member is circumferentially wrapped around the outer periphery of the filter.

[0014] Optionally, a side wall of the shell is provided with an inlet hole, and the first pipe section of the liquid pipe penetrates into the shell from the inlet hole, and the first pipe section is inclined from the inlet hole toward the second pipe section.

[0015] 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.

[0016] Optionally, the bending portion includes a first bending section, a second bending section, and an arc-shaped connecting portion connected between the first bending section and the second bending section; the arc-shaped connecting portion is bent to form a first bending angle, and the first bending angle is greater than 90°.

[0017] Optionally, the bending portion is a "V"-shaped structure.

[0018] Optionally, the damping element is cement.

[0019] 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.

[0020] The beneficial effects of the present invention compared with the prior art are:

[0021] The air-conditioning indoor unit and air-conditioning system provided by the present invention are provided with a filter between the bending portion and the refrigerant inlet of the liquid pipe. The filter has a fine metal mesh inside, which can break up the larger refrigerant bubbles flowing through into smaller bubbles. Therefore, when the refrigerant flows to the bending portion, the pulse impact amplitude of the refrigerant on the liquid pipe can be reduced and more continuous, thereby reducing the low-frequency noise caused by the vibration of the pipeline transmitted to the indoor unit casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] Figure 1 It is a partial structural schematic diagram of an air conditioner indoor unit in the prior art;

[0024] Figure 2 A partial cross-sectional schematic diagram of an air-conditioning indoor unit disclosed in one embodiment of the present invention;

[0025] Figure 3 for Figure 2 A schematic diagram of the enlarged structure of the local area A;

[0026] Figure 4 A partial structural schematic diagram of an air-conditioning indoor unit disclosed in one embodiment of the present invention;

[0027] Figure 5 for Figure 4 A schematic diagram of the enlarged structure of the local area B;

[0028] Figure 6 A schematic diagram of the structure of a filter in an indoor unit of an air conditioner disclosed in one embodiment of the present invention;

[0029] Figure 7 The present invention is a schematic structural diagram of an air conditioning system disclosed in an embodiment of the present invention.

[0030] Reference numerals

[0031] 21. Shell; 22. Liquid pipe; 23. First pipe section; 24. Second pipe section; 25. Bend; 26. Filter; 27. Inlet hole; 28. Diverter; 29. ​​Diverter pipe; 30. Indoor unit; 31. Outdoor unit; 32. Air pipe; DETAILED DESCRIPTION

[0032] 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 above-mentioned 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.

[0033] The terms "a", "an", "the", "above", 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 exist in addition to the listed elements / components / etc.

[0034] like Figures 2 to 6 As shown, an embodiment of the present invention discloses an air conditioner indoor unit. The air conditioner indoor unit includes a housing 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 housing 21. The liquid pipe 22 passes through the housing 21 from the outside of the housing 21. That is, part of the liquid pipe 22 is located in the housing 21. Specifically, refer to Figure 2 and Figure 3 In this embodiment, a 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 through the inlet hole 27 .

[0035] In this embodiment, the liquid pipe 22 includes a first pipe section 23 and a second pipe section 24 connected to each other. Figure 2 and Figure 3 The first pipe section 23 passes through the housing 21, and the second pipe section 24 is located in the housing 21. The first pipe section 23 is inclined from the outside of the housing 21 toward the end of the second pipe section 24, that is, the first pipe section 23 is inclined from the inlet hole 27 toward the second pipe section 24, so as to form a bending portion 25 at the connection between the first pipe section 23 and the second pipe section 24.

[0036] refer to Figures 4 to 6, the refrigerant flows into the liquid pipe 22 from the entrance of the first pipe section 23, and a filter 26 is provided between the entrance of the first pipe section 23 and the bending portion 25 along the flow direction of the refrigerant, and a metal mesh is provided in the filter 26 (not shown in the drawings). In this embodiment, the plane where the metal mesh is located forms an angle with the flow direction of the refrigerant. In this way, when the refrigerant bubbles flow through the metal mesh in the filter 26, the metal mesh can break up the larger refrigerant bubbles flowing through into smaller bubbles, so that when the refrigerant flows to the bending portion 25, the pulse impact amplitude generated by the refrigerant on the liquid pipe 22 can be reduced and more continuous, thereby helping to reduce the low-frequency noise caused by the vibration of the pipeline transmitted to the indoor unit housing 21.

[0037] In a preferred embodiment, the plane where the metal mesh is located is perpendicular to the flow direction of the refrigerant, so that the effect of breaking up the larger refrigerant bubbles flowing through into smaller bubbles will be more uniform, which is more conducive to reducing the pulse impact amplitude of the refrigerant on the liquid pipe 22.

[0038] In a preferred embodiment, the mesh diameter of the metal mesh is less than 0.5 mm, so as to achieve the effect of breaking up the larger refrigerant bubbles flowing through into smaller bubbles.

[0039] In this embodiment, the fixing structure is used to fix the liquid pipe 22 to the housing 21. The fixing structure is arranged at the bending portion 25 of the liquid pipe 22. That is, the setting position of the fixing structure corresponds to the position of the bending portion 25. The filter 26 is located between the inlet of the first pipe section 23 and the fixing structure. That is, the filter 26 is located between the inlet of the first pipe section 23 and the projection of the fixing structure on the liquid pipe 22. Figure 4 During the flow process, the refrigerant flows along the first pipe section 23 , first flows through the filter 26 in the first pipe section 23 , then flows through the bending portion 25 , and enters the second pipe section 24 of the liquid pipe 22 .

[0040] In this embodiment, the evaporator includes an evaporator body, a flow dividing pipe 29 and a flow dividing head 28. Figure 5 The flow dividing pipe 29 is connected to the flow dividing head 28 and the evaporator body respectively, and the flow dividing head 28 is also connected to the second pipe section 24 of the liquid pipe 22. The flow dividing head 28 is used to divide the refrigerant flowing out of the liquid pipe 22 to a plurality of flow dividing pipes 29.

[0041] In this embodiment, the bending portion 25 includes a first bending section, a second bending section, and an arc-shaped connecting portion connected between the first bending section and the second bending section. The first bending section is located on the first pipe section 23, and the second bending section is located on the second pipe section 24. The 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 bending portion 25, improves the vibration transmission loss, and thus helps to reduce the low-frequency noise caused by the vibration transmission to the indoor unit housing 21.

[0042] The present invention does not limit the specific value of the first bending angle, and those skilled in the art may determine the value as needed.

[0043] In a preferred embodiment, the above-mentioned bending portion 25 is a "V"-shaped structure. This is conducive to reducing the pulse impact of the refrigerant on the liquid pipe 22 at the bending portion 25, 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, that is, achieving the reduction of the low-frequency gurgling sound of the indoor unit.

[0044] In this embodiment, the outer periphery of the filter 26 is circumferentially wrapped with a damping member (not shown in the drawings). In some optional embodiments, the damping member is clay, that is, the filter 26 can be wrapped with clay. The provision of the damping member can reduce the pipeline vibration caused by the change in the size of the refrigerant bubbles when the refrigerant bubbles flow through the metal mesh in the filter 26; thereby helping to reduce the low-frequency noise caused by the vibration transmitted to the indoor unit housing 21.

[0045] 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.

[0046] 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 large available space at this position, which can be conveniently arranged with cement, which is conducive to reducing the vibration speed of the wall of the liquid pipe 22. Therefore, in a preferred embodiment, the filter 26 is arranged at a position of the first pipe section 23 near the inlet hole 27. This solves the problem that the outer periphery of the filter 26 cannot be wrapped with cement due to the small space, or the shock absorption effect is poor due to the contact of the pipeline.

[0047] 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.

[0048] It should be noted that, since part of the shell 21 blocks the structural details of the internal liquid pipe 22, in order to conveniently illustrate the structure of the liquid pipe 22, the embodiment of the present invention provides Figure 1 , Figure 4 and Figure 5 A portion of the housing 21 is hidden, that is, a portion below the housing 21 is hidden.

[0049] like Figure 7 As shown, an embodiment of the present invention further provides an air conditioning system, which includes an outdoor unit 31 and an air conditioning indoor unit 30 described in any of the above embodiments. The detailed structural features and advantages of the air conditioning indoor unit 30 can be referred to the description of the above embodiments, which will not be repeated here.

[0050] refer to Figure 7 The outdoor unit 31 is connected to the indoor unit 30 through the liquid pipe 22 and the gas pipe 32, and the liquid refrigerant flows from the outdoor unit 31 to the indoor unit 30 in the liquid pipe 22. The gas evaporated by the evaporator of the indoor unit 30 flows to the outdoor unit 31 through the gas pipe 32. A splitter 28 is provided on the liquid pipe 22 to split the refrigerant flowing in the liquid pipe 22.

[0051] In summary, the air-conditioning indoor unit and air-conditioning system provided by the present invention have at least the following advantages:

[0052] The air-conditioning indoor unit and air-conditioning system disclosed in the embodiments of the present invention are provided with a filter between the bending portion and the refrigerant inlet of the liquid pipe. The filter has a fine metal mesh inside, which can break up the larger refrigerant bubbles flowing through into smaller bubbles. Therefore, when the refrigerant flows to the bending portion, the pulse impact amplitude of the refrigerant on the liquid pipe can be reduced and made more continuous, thereby reducing the low-frequency noise caused by the vibration of the pipeline transmitted to the indoor unit casing.

[0053] 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.

[0054] 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.

[0055] 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 inclined from the outside of the shell (21) toward the second pipe section (24), so as to form a bending portion (25) at the connection between the first pipe section (23) and the second pipe section (24); The refrigerant flows into the liquid pipe (22) from the inlet of the first pipe section (23). Along the flow direction of the refrigerant, a filter (26) is provided between the inlet of the first pipe section (23) and the bending portion (25). A metal mesh is provided inside the filter (26), and the plane where the metal mesh is located forms an angle with the flow direction of the refrigerant.

2. The air conditioner indoor unit according to claim 1, characterized in that: The plane where the metal mesh is located is perpendicular to the flow direction of the refrigerant.

3. The air conditioner indoor unit according to claim 1, characterized in that: The mesh diameter of the metal mesh is less than 0.5 mm.

4. The air conditioner indoor unit according to claim 1, characterized in that: The indoor unit further comprises a fixing structure, the fixing structure being used to fix the liquid pipe (22) to the shell (21), the fixing structure being arranged at the bending portion (25); the filter (26) being located between the inlet of the first pipe section (23) and the fixing structure.

5. The air conditioner indoor unit according to claim 1, characterized in that: The outer periphery of the filter (26) is circumferentially wrapped with a damping member.

6. 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), and the first pipe section (23) of the liquid pipe (22) penetrates into the shell (21) from the inlet hole (27), and the first pipe section (23) is arranged obliquely from the inlet hole (27) toward the second pipe section (24).

7. 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 diverter pipe (29) and a diverter head (28), the diverter pipe (29) is respectively connected to the diverter head (28) and the evaporator body, and the diverter head (28) is also connected to the second pipe section (24) of the liquid pipe (22).

8. The air conditioner indoor unit according to claim 1, characterized in that: The bending portion (25) comprises a first bending section, a second bending section and an arc-shaped connecting portion connected between the first bending section and the second bending section; the arc-shaped connecting portion is bent to form a first bending angle, and the first bending angle is greater than 90°.

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

10. The air conditioner indoor unit according to claim 5, characterized in that: The damping element is cement.

11. 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 10.

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