Air duct piece and air conditioner

Abstract

The utility model relates to the technical field of air conditioners, and discloses an air duct piece and an air conditioner. The air duct piece comprises a volute, a first air duct and a second air duct, the volute tongue is arranged in the air duct and comprises a first section and a second section, the first section and the second section are sequentially arranged in the flowing direction of airflow in the air duct, and a bend facing the axis of the air duct is formed at the joint of the first section and the second section; and the pressure relief hole is formed in the second section. The first section is not provided with a pressure relief hole, the pressure relief hole is formed in the second section, pressure relief can be achieved, and the situation that air in the air channel is exhausted through the first section, and consequently the air outlet amount of the indoor unit is affected can be avoided.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, specifically to an air duct component and an air conditioner. Background Technology

[0002] Currently, during the operation of an air conditioner indoor unit, when the airflow inside the duct encounters significant resistance, it forms a backflow vortex, causing internal smoothness and disorder, affecting both air volume and noise levels.

[0003] To address this, the related technology provides a noise reduction volute structure for a cross-flow fan. This structure includes a volute tongue disposed on the volute casing. The volute tongue has a double-layer structure, including an inner layer and an outer layer that are in contact with the airflow. A gap is left between the inner layer and the outer layer, and noise reduction holes are opened on the inner layer.

[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0005] Noise reduction holes are located on the inner layer near the fan. The noise reduction effect of the noise reduction holes at this location is limited, but a lot of airflow in the air duct will flow out through the noise reduction holes, which seriously affects the air volume of the indoor unit.

[0006] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0007] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.

[0008] This disclosure provides an air duct component and an air conditioner to solve the problem in the related art that noise reduction holes can affect the air volume of the indoor unit.

[0009] According to a first aspect of the present invention, a duct component is provided, comprising: a volute housing defining an air duct; a volute tongue disposed within the air duct, the volute tongue comprising a first segment and a second segment, the first segment and the second segment being arranged sequentially along the airflow direction within the air duct, and the connection between the first segment and the second segment forming a bend toward the axis of the air duct; and a pressure relief hole disposed in the second segment.

[0010] Optionally, the distance between the pressure relief hole and the bend is greater than or equal to 5 mm and less than or equal to 15 mm.

[0011] Optionally, the second segment includes a pressure relief area and a non-pressure relief area. The pressure relief area and the non-pressure relief area are arranged alternately along the length of the volute tongue, wherein the pressure relief hole is located in the pressure relief area.

[0012] Optionally, each pressure relief area is provided with multiple pressure relief holes, with at least two pressure relief holes arranged sequentially along the length direction of the volute tongue and / or at least two pressure relief holes arranged sequentially along the flow direction of the airflow in the duct.

[0013] Optionally, the volute includes a first shell section, a volute tongue is disposed in the first shell section and located on the side of the first shell section facing the air duct axis, and the first shell section is provided with a pressure relief channel communicating with the pressure relief hole.

[0014] Optionally, the volute tongue is provided with a latch that engages with the pressure relief channel.

[0015] Optionally, the volute includes a first shell section, a volute tongue is disposed on the first shell section and located on the side of the first shell section facing the air duct axis, and a sound-absorbing cavity is defined between the volute tongue and the first shell section.

[0016] Optionally, the air duct component further includes: a guide rib, disposed on the inner wall surface of the volute, wherein the volute tongue is disposed upstream of the guide rib along the flow direction of the airflow within the air duct.

[0017] According to a second aspect of the present invention, an air conditioner is provided, including an indoor unit. The indoor unit includes: a housing defining a receiving cavity having an air inlet and an air outlet; a duct component as described in any of the above embodiments, one end of the duct being connected to the air inlet and the other end of the duct being connected to the air outlet; a cross-flow fan and a heat exchanger, both disposed within the receiving cavity, the duct connecting the cross-flow fan and the heat exchanger, and the cross-flow fan and the evaporator being arranged sequentially along the airflow direction within the duct.

[0018] Optionally, the pressure relief channel is connected to the air inlet.

[0019] The air duct components and air conditioners provided in this disclosure can achieve the following technical effects:

[0020] The second section is equipped with a pressure relief hole, through which the high-pressure vortex in the air duct can be discharged, thereby relieving pressure and making the airflow in the entire air duct relatively smooth. The position of the eccentric vortex also becomes relatively stable, reducing turbulence and thus reducing noise.

[0021] In this application, no pressure relief hole is provided in the first section, and the pressure relief hole is provided in the second section. This can not only achieve pressure relief, but also prevent the air in the air duct from being discharged through the first section and affecting the air volume of the indoor unit.

[0022] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0023] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0024] Figure 1 This is a schematic diagram of the structure of an indoor unit provided in an embodiment of this disclosure;

[0025] Figure 2 yes Figure 1 Sectional view along the middle AA direction;

[0026] Figure 3 yes Figure 2 Enlarged structural diagram of section A in the middle;

[0027] Figure 4 This is a schematic diagram of another indoor unit provided in an embodiment of this disclosure;

[0028] Figure 5 This is a partial structural diagram of an indoor unit provided in an embodiment of this disclosure;

[0029] Figure 6 This is a schematic diagram of the structure of an indoor unit after removing the evaporator, provided in an embodiment of this disclosure;

[0030] Figure 7 This is a schematic diagram of another indoor unit provided in an embodiment of this disclosure;

[0031] Figure 8 yes Figure 7 Enlarged structural diagram of section B in the middle;

[0032] Figure 9 This is a schematic diagram of the structure of a cochlear tongue provided in an embodiment of this disclosure.

[0033] Figure label:

[0034] 10: Volute; 101: First shell section; 1011: First sub-shell section; 1012: Second sub-shell section; 1013: Third sub-shell section; 102: Pressure relief channel; 103: Guide rib; 1031: First guide rib; 1032: Second guide rib; 104: Second shell section; 105: Third shell section; 106: Fourth shell section; 107: First end; 108: Second end; 109: Air duct;

[0035] 20: volute tongue; 201: pressure relief area; 2011: pressure relief hole; 202: non-pressure relief area; 203: snap-fit; 204: first section; 205: second section; 206: silencer cavity; 207: bend; 2071: first end; 2072: second end; 208: third end; 209: fourth end;

[0036] 30: Cross-flow fan;

[0037] 40: Housing; 401: Air inlet; 402: Air outlet; 403: Receiving cavity;

[0038] 50: Evaporator. Detailed Implementation

[0039] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0040] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0041] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0042] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0043] Unless otherwise stated, the term "multiple" means two or more.

[0044] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0045] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0046] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0047] Combination Figure 1-9 As shown, this disclosure provides an air duct component for air conditioning.

[0048] An air conditioner includes an indoor unit and an outdoor unit. The indoor unit includes a casing 40, air duct components, a cross-flow fan 30, and a heat exchanger.

[0049] like Figure 1 and Figure 2 As shown, the housing 40 defines a receiving cavity 403 having an air inlet 401 and an air outlet 402; the air duct component includes a volute assembly, the volute assembly includes a volute 10, the volute 10 defines an air outlet duct 109.

[0050] One end of the air duct 109 is connected to the air inlet 401, and the other end of the air duct 109 is connected to the air outlet 402.

[0051] like Figure 2 As shown, the cross-flow fan 30 and the heat exchanger are both located in the housing cavity 403. The air duct 109 connects the cross-flow fan 30 and the heat exchanger. Under the action of the cross-flow fan 30, air enters from the air inlet 401, exchanges heat with the heat exchanger, and then flows out through the air outlet 402, thus realizing the normal operation of the air conditioner.

[0052] Along the airflow direction within the duct 109, the cross-flow fan 30 and the evaporator 50 are arranged sequentially. Specifically, the cross-flow fan 30 is positioned close to the air inlet 401, allowing for easy maintenance and repair of the fan 30 from the air inlet 401 when the indoor unit malfunctions, thus improving the ease of maintenance for the ducted air conditioner. The heat exchanger is positioned close to the air outlet 402, which increases the resistance to airflow. This resistance can cause backflow vortices at the front of the air outlet 402, resulting in abnormal noise and negatively impacting the user experience.

[0053] like Figure 3 and Figure 6As shown, the air duct component also includes a volute tongue 20. The volute tongue 20 is disposed in the air duct 109 and includes a first section 204 and a second section 205. Along the airflow direction in the air duct 109, the first section 204 and the second section 205 are arranged sequentially, and the connection between the first section 204 and the second section 205 forms a bend 207 toward the axis of the air duct 109.

[0054] The pressure relief hole 2011 is located in the second section 205.

[0055] A pressure relief hole 2011 is provided in the second section 205 of the volute tongue 20. The high-pressure vortex in the air duct 109 can be discharged through the pressure relief hole 2011 to achieve pressure relief, making the airflow in the entire air duct 109 relatively smooth, and the position of the eccentric vortex also becomes relatively stable, reducing turbulence and thus reducing noise.

[0056] In this application, a pressure relief hole 2011 is provided in the second section 205, while the first section 204 is a complete solid structure without a pressure relief hole 2011, and the bend is also a complete solid structure without a pressure relief hole. Compared to the first section 204, the second section 205 is closer to the heat exchanger, so providing a pressure relief hole 2011 in the second section 205 will be more effective for pressure relief. If a pressure relief hole 2011 is provided in the first section 204, the pressure relief effect will be insignificant, and a large amount of air in the air duct 109 will be discharged through the pressure relief hole 2011, affecting the air volume of the indoor unit.

[0057] Optionally, such as Figure 9 As shown, the distance L2 between the pressure relief hole 2011 and the bend 207 is greater than or equal to 5 mm and less than or equal to 15 mm.

[0058] When the area of ​​the pressure relief hole 2011 is fixed, if the distance between the pressure relief hole 2011 and the bend 207 is less than 5mm, the pressure relief hole 2011 is too far from the heat exchanger, the pressure relief effect is not obvious, and it has a significant impact on the air volume of the indoor unit. When the distance between the pressure relief hole 2011 and the bend 207 is greater than 15mm, with a fixed size of the volute tongue 20, the area on the second section 205 where the pressure relief hole 2011 can be installed will be limited, and the total opening area of ​​the pressure relief hole 2011 will not meet the requirements. Therefore, the distance between the pressure relief hole 2011 and the bend 207 should be greater than or equal to 5mm and less than or equal to 15mm, such as 5mm, 8mm, 11mm or 15mm.

[0059] The distance between the pressure relief hole 2011 and the bend 207 refers to the distance between the closest point of the pressure relief hole 2011 to the bend 207 and the closest end of the bend 207 to the pressure relief hole 2011. Taking the bend 207 as an example where it is arc-shaped (e.g., circular arc), the first end 2071 of the arc is connected to the first segment 204, and the second end 2072 of the arc is connected to the second segment 205. The distance between the pressure relief hole 2011 and the bend 207 refers to the distance between the closest point of the pressure relief hole 2011 to the bend 207 and the second end of the arc.

[0060] Optionally, such as Figure 6 As shown, the second segment 205 includes a pressure relief area 201 and a non-pressure relief area 202. Along the length direction of the volute tongue 20, the pressure relief area 201 and the non-pressure relief area 202 are arranged alternately. The pressure relief hole 2011 is located in the pressure relief area 201.

[0061] The pressure relief area 201 is provided with a pressure relief hole 2011, while the non-pressure relief area 202 is not provided with a pressure relief hole 2011. This arrangement ensures that when the airflow in the duct 109 impacts the volute tongue 20, the time when the airflow reaches the pressure relief area 201 and the non-pressure relief area 202 is inconsistent. This can effectively avoid the resonance peak caused by the superposition of pulsations in the same frequency range, thereby further reducing the noise value.

[0062] There are multiple pressure relief areas 201 and multiple non-pressure relief areas 202. The multiple pressure relief areas 201 and multiple non-pressure relief areas 202 are arranged sequentially and at intervals along the length direction of the volute tongue 20 on the second segment 205.

[0063] The number of pressure relief zones 201 and non-pressure relief zones 202, as well as the size of pressure relief zones 201 and non-pressure relief zones 202, can be flexibly set in practical applications and are not limited here.

[0064] Optionally, each pressure relief region 201 is provided with a plurality of pressure relief holes 2011, at least two of which are along the length direction of the volute tongue 20 (e.g., Figure 9 (As shown in the middle W) are arranged in sequence and / or at least two pressure relief holes 2011 are arranged in sequence along the airflow direction in the air duct 109.

[0065] Each pressure relief zone 201 is provided with multiple pressure relief holes 2011. The multiple pressure relief holes 2011 are divided into multiple groups, and each group of pressure relief holes 2011 includes multiple pressure relief holes 2011. The multiple pressure relief holes 2011 in each group are arranged sequentially along the length direction of the volute tongue 20 and along the flow direction of the airflow, so that the multiple pressure relief holes 2011 are neatly located in the pressure relief zone 201. This allows the airflow in the air duct 109 to be evenly depressurized when passing through the pressure relief zone 201, ensuring uniform airflow and reducing noise.

[0066] The pressure relief hole 2011 can be a circular hole or any other shape. The specific shape, size, and number of pressure relief holes 2011 in each pressure relief area 201 can be flexibly set in practical applications and are not limited here.

[0067] Optionally, such as Figure 5 As shown, the volute 10 includes a first shell section 101, the volute tongue 20 is disposed on the first shell section 101 and located on the side of the first shell section 101 facing the axis of the air duct 109, and the first shell section 101 is provided with a pressure relief channel 102 connected to the pressure relief hole 2011.

[0068] The volute 10 includes a first shell section 101, which is divided into a first sub-shell section 1011, a second sub-shell section 1012, and a third sub-shell section 1013. The second sub-shell section 1012 is located near the fan, and the third sub-shell section 1013 is located near the heat exchanger. The first sub-shell section 1011 connects the second sub-shell section 1012 and the third sub-shell section 1013. The connections between the first sub-shell section 1011 and the second sub-shell section 1012, and between the first sub-shell section 1011 and the third sub-shell section 1013, form angles facing the axis of the air duct 109. These angles are obtuse. The first sub-shell section 1011 is inclined, tilting from the second sub-shell section 1012 towards the third sub-shell section 1013. A volute tongue 20 is located on the second sub-shell section 1012, on the side of the second sub-shell section 1012 facing the axis of the air duct 109. The cross-section of the area defined by the volute tongue 20 and the second sub-shell section 1012 is approximately triangular. Figure 7 and Figure 8 As shown, the second sub-shell section 1012 is provided with a pressure relief channel 102. The pressure relief channel 102 is elongated and there are one or more pressure relief channels 102. The pressure relief channel 102 corresponds to one or more pressure relief holes 2011.

[0069] The pressure relief channel 102 is connected to the pressure relief hole 2011 on the volute tongue 20, so that the air flowing out of the pressure relief hole 2011 is discharged through the pressure relief channel 102, making the airflow in the air duct 109 smoother, and the position of the eccentric vortex becomes relatively stable, reducing turbulence and thus reducing noise.

[0070] A pressure relief area 201 may correspond to one or more pressure relief channels 102, and the orthographic projection of the pressure relief hole 2011 on the pressure relief channel 102 is at least partially located within the pressure relief channel 102, such that the pressure relief hole 2011 is connected to the pressure relief channel 102.

[0071] The specific number and shape of the pressure relief channels 102 can be flexibly set in practical applications and are not limited here.

[0072] Optionally, the pressure relief channel 102 is connected to the air inlet 401.

[0073] The pressure relief channel 102 is located in the second sub-shell section 1012, and the air inlet 401 corresponds to the cross-flow fan 30. After the airflow in the air duct 109 is discharged through the pressure relief hole 2011, it flows out from the air inlet 401 through the pressure relief channel 102, so that the airflow is discharged in time, and the airflow in the air duct 109 can also be discharged smoothly from the pressure relief hole 2011.

[0074] Optionally, such as Figure 8 As shown, the volute tongue 20 is provided with a buckle 203, which is engaged with the pressure relief channel 102.

[0075] The latch 203 extends towards the pressure relief channel 102, inserts into and exits the pressure relief channel 102, and abuts against the side of the pressure relief channel 102 opposite to the volute tongue 20, thus engaging the latch 203 with the pressure relief channel 102. This connects the volute tongue 20 to the volute housing 10, and also increases the utility of the pressure relief channel 102. The connection method of the latch 203 provides a stable connection, is easy to disassemble and install, and improves assembly and disassembly efficiency.

[0076] The detachable nature of the volute tongue 20 reduces the production cost of both the volute tongue 20 and the volute housing 10. Furthermore, the detachable nature of the volute tongue 20 also facilitates the inspection and replacement of both the volute tongue 20 and the volute housing 10.

[0077] Optionally, such as Figure 3 As shown, the volute 10 includes a first shell section 101, and a volute tongue 20 is disposed on the first shell section 101 and located on the side of the first shell section 101 facing the axis of the air duct 109. A sound-absorbing cavity 206 is defined between the volute tongue 20 and the first shell section 101.

[0078] The second subshell segment 1012 and the volute tongue 20 define a silencing cavity 206, namely the Helmholtz resonance silencing cavity 206. The silencing cavity 206 reduces noise. The cross-section of the silencing cavity 206 is similar to a triangle. The silencing cavity 206 has a simple structure, good noise reduction performance and low pressure loss.

[0079] Optionally, such as Figure 2 As shown, the volute assembly also includes a guide rib 103, which is disposed on the inner wall surface of the volute 10. The volute tongue 20 is disposed upstream of the guide rib 103 along the flow direction of the airflow in the air duct 109, with the direction closer to the axis of the air duct 109 being inward and the direction away from the axis of the air duct 109 being outward.

[0080] The volute tongue 20 and the guide rib 103 are arranged along the flow direction of the airflow in the air duct 109. The guide rib 103 straightens the airflow after passing through the volute tongue 20, making the position of the eccentric vortex relatively stable, preventing the eccentric vortex from shifting, avoiding backflow, and thus reducing noise.

[0081] The flow guide rib 103 includes a first flow guide rib 1031, and the number of first flow guide ribs 1031 is one or more, and at least one first flow guide rib 1031 is located in the middle of the length direction of the volute 10.

[0082] When the air in the air duct 109 flows to the first guide rib 1031, the first guide rib 1031 can rectify the airflow and is located in the length direction of the volute 10 (e.g., Figure 5 The first guide rib 1031 in the middle of the air duct 109 (in the direction shown by M) causes the airflow in the duct 109 to be divided into two parts located on both sides of the first guide rib 1031. This makes the airflow in the duct 109 roughly evenly distributed along the length of the volute 10, making the position of the eccentric vortex relatively stable, preventing the eccentric vortex from shifting, avoiding backflow, and thus reducing noise. Moreover, the method of setting the first guide rib 1031 is low-cost and easy to implement. For example, Figure 6 The two first guide ribs at point N are located in the middle of the length direction of the volute.

[0083] Optionally, such as Figure 6 As shown, there are multiple first guide ribs 1031, which are arranged sequentially along the length of the volute 10; wherein, the multiple first guide ribs 1031 are respectively located on opposite sides of the at least one first guide rib 1031.

[0084] The two ends of the volute tongue 20 along its length are the third end 208 and the fourth end 209, respectively. Some of the multiple first guide ribs 1031 are located between the third end 208 or the middle of the volute shell 10 along its length, while others are located between the fourth end 209 or the middle of the volute shell 10 along its length. In this way, the first guide ribs 1031 are distributed approximately evenly along the length of the volute tongue 20, thereby rectifying the airflow within the air duct 109 and ensuring that the airflow within the air duct 109 is distributed approximately evenly along the length of the volute tongue 20.

[0085] like Figure 6 As shown, the distance L1 between two adjacent first guide ribs 1031 is greater than or equal to 30mm and less than or equal to 120mm.

[0086] If the distance between two adjacent first guide ribs 1031 is less than 30mm, the density of the first guide ribs 1031 will be too high, which will cause greater resistance to the flow of air in the air duct 109; if the distance between two adjacent first guide ribs 1031 is greater than 120mm, the density of the first guide ribs 1031 will be too low, and the rectification effect of the first guide ribs 1031 will not be obvious.

[0087] Therefore, the distance L1 between two adjacent first guide ribs 1031 is set to be greater than or equal to 30mm and less than or equal to 120mm, such as 30mm, 60mm, 90mm or 120mm, which ensures the rectification effect of the first guide ribs 1031 on the airflow in the air duct 109 without causing large wind resistance.

[0088] Optionally, the volute 10 includes a first shell segment 101, a second shell segment 104, a third shell segment 105, and a fourth shell segment 106.

[0089] The second shell section 104 is disposed opposite to the first shell section 101, and the first shell section 101 and the second shell section 104 form the sidewall of the air duct 109 in the length direction (the same as the length direction of the volute tongue 20); the fourth shell section 106 is disposed opposite to the third shell section 105, and the third shell section 105 and the fourth shell section 106 form the sidewall of the air duct 109 in the width direction.

[0090] The third shell segment 105 is connected between one end of the first shell segment 101 and one end of the second shell segment 104, and the fourth shell segment 106 is connected between the other end of the first shell segment 101 and the other end of the second shell segment 104.

[0091] like Figure 5 As shown, the first shell segment 101 is located below the second shell segment 104.

[0092] The inner wall surface of the first shell section 101 and / or the second shell section 104 is provided with a first guide rib 1031.

[0093] The first guide rib 1031 is provided on the first shell section 101 and / or on the second shell section 104, which can rectify the airflow in the air duct 109.

[0094] When a first guide rib 1031 is provided on the first shell section 101, at least one first guide rib 1031 is located at the middle of the length direction of the first shell section 101 (i.e., the length direction of the volute 10); when a first guide rib 1031 is provided on the second shell section 104, at least one first guide rib 1031 is located at the middle of the length direction of the second shell section 104 (i.e., the length direction of the volute 10). The length direction of the volute tongue 20 is the same as the length direction of the volute 10.

[0095] Optionally, such as Figure 6 As shown, when both the first shell section 101 and the second shell section 104 are provided with first guide ribs 1031, the first guide ribs 1031 located in the first shell section 101 are correspondingly provided with the first guide ribs 1031 located in the second shell section 104.

[0096] For example, the orthographic projection of the first guide rib 1031 on the first shell section 101 onto the second shell section 104 is at least partially coincident with the first guide rib 1031 on the second shell section 104. In this way, the first guide rib 1031 on the first shell section 101 and the first guide rib 1031 on the second shell section 104 can play a synergistic role, enhance the rectification effect on the airflow, and avoid chaotic airflow in the duct.

[0097] Optionally, such as Figure 6 As shown, H≤1 / 3L, where H is the height of the first guide rib 1031 and L is the distance between the first shell section 101 and the second shell section 104 at the location of the first guide rib 1031.

[0098] H is greater than 0 and less than or equal to one-third of L. If H is greater than one-third of L, the first guide rib 1031 will protrude too much, resulting in greater wind resistance.

[0099] Optionally, such as Figure 5 and Figure 6 As shown, the guide rib 103 also includes a second guide rib 1032, which is disposed on the inner wall surface of the third shell section 105 and / or the fourth shell section 106, wherein the direction closer to the axis of the air duct 109 is inward, and the direction away from the axis of the air duct 109 is outward.

[0100] The second guide rib 1032 can further sort and rectify the airflow passing through it, making the airflow in the duct 109 more uniform.

[0101] Optionally, the second guide rib 1032 of the third shell section 105 is provided correspondingly to the second guide rib 1032 of the fourth shell section 106.

[0102] The distance between the second guide rib 1032 on the third shell section 105 and the second guide rib 1032 on the fourth shell section 106 is greater than the distance between the first guide rib 1031 on the first shell section 101 and the first guide rib 1031 on the second shell section 104. Therefore, the second guide rib 1032 on the third shell section 105 and the second guide rib 1032 on the fourth shell section 106 are correspondingly arranged, which can guide and sort the airflow in the same direction, enhance the guiding effect of the airflow, and the rectification effect is better than the second guide rib 1032 on the third shell section 105 and the second guide rib 1032 on the fourth shell section 106 being staggered.

[0103] Optionally, such as Figure 5 As shown, the guide rib 103 extends along the flow direction of the airflow inside the air duct 109.

[0104] When the airflow passes through the guide rib 103, the guide rib 103 can organize the airflow and guide the airflow to flow along the extension direction of the guide rib 103. On the one hand, it can rectify the airflow, and on the other hand, it can reduce the wind resistance caused by the setting of the guide rib 103.

[0105] The first guide rib 1031 and / or the second guide rib 1032 extend along the flow direction of the airflow within the duct 109. For example... Figure 5 As shown, the first guide rib 1031 and the second guide rib 1032 both extend along the flow direction of the airflow in the air duct 109.

[0106] Optionally, such as Figure 5 As shown, the guide rib 103 includes a first end 107 and a second end 108 arranged sequentially along the airflow direction. Along the airflow direction in the air duct 109, the first end 107 is inclined toward the direction close to the axis of the air duct 109 and / or the second end 108 is inclined toward the direction away from the axis of the air duct 109.

[0107] The inclination of the first end 107 and / or the second end 108 can guide the airflow and reduce the wind resistance of the guide rib 103.

[0108] The first guide rib 1031 and / or the second guide rib 1032 include a first end 107 and a second end 108.

[0109] According to a second aspect of the present invention, an air conditioner is provided, including an indoor unit, the indoor unit including a housing 40, the housing 40 defining a receiving cavity 403 having an air inlet 401 and an air outlet 402.

[0110] As described in any of the above embodiments, one end of the air duct 109 is connected to the air inlet 401, and the other end of the air duct 109 is connected to the air outlet 402.

[0111] The cross-flow fan 30 and the heat exchanger are both located in the receiving cavity 403. The air duct 109 connects the cross-flow fan 30 and the heat exchanger. The cross-flow fan 30 and the evaporator 50 are arranged in sequence along the airflow direction in the air duct 109.

[0112] The air conditioner provided in the second aspect of this utility model includes the air duct component as described in any of the above embodiments, and therefore has all the beneficial effects of the air duct component as described in any of the above embodiments, which will not be repeated here.

[0113] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An air duct member characterized by, The volute includes: a volute shell defining an air duct; a volute tongue arranged in the air duct, the volute tongue including a first section and a second section, the first section and the second section being arranged in sequence along a flow direction of airflow in the air duct, and a bend being formed at a connection between the first section and the second section and facing an axis of the air duct; a pressure relief hole arranged in the second section.

2. The air duct member according to claim 1, wherein a distance between the pressure relief hole and the bend is greater than or equal to 5 mm and less than or equal to 15 mm.

3. The air duct member according to claim 1, wherein the second section includes a pressure relief area and a non-pressure relief area, the pressure relief area and the non-pressure relief area being arranged in sequence along a length direction of the volute tongue, and the pressure relief hole is arranged in the pressure relief area.

4. The air duct member according to claim 3, wherein a plurality of pressure relief holes are arranged in each pressure relief area, and at least two pressure relief holes are arranged in sequence along the length direction of the volute tongue and / or at least two pressure relief holes are arranged in sequence along the flow direction of airflow in the air duct.

5. The air duct member according to any one of claims 1 to 4, wherein the volute shell includes a first shell section, the volute tongue is arranged on a side of the first shell section facing the axis of the air duct, and the first shell section is provided with a pressure relief passage in communication with the pressure relief hole.

6. The air duct member according to claim 5, wherein the volute tongue is provided with a buckle, and the buckle is clamped with the pressure relief passage.

7. The air duct member according to any one of claims 1 to 4, wherein the volute shell includes a first shell section, the volute tongue is arranged on a side of the first shell section facing the axis of the air duct, and a sound attenuation cavity is defined between the volute tongue and the first shell section.

8. The air duct member according to any one of claims 1 to 4, characterized by The air duct member further includes: a flow guide rib arranged on an inner wall surface of the volute shell, and 9. An air conditioner characterized by comprising: the volute tongue is arranged upstream of the flow guide rib along the flow direction of airflow in the air duct. The air conditioner includes: a room unit including: a housing defining a receiving cavity having an air inlet and an air outlet; the air duct member according to any one of claims 1 to 8, one end of the air duct being in communication with the air inlet and the other end of the air duct being in communication with the air outlet; a cross-flow fan and a heat exchanger, both arranged in the receiving cavity, the air duct being in communication between the cross-flow fan and the heat exchanger, and the cross-flow fan and the evaporator being arranged in sequence along the flow direction of airflow in the air duct.

10. The air conditioner according to claim 9, wherein the pressure relief passage is in communication with the air inlet.

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