Volute assembly for air conditioner and air conditioner

Abstract

The utility model relates to the technical field of air conditioning, and discloses a volute assembly for an air conditioner and the air conditioner. The air conditioner comprises a cross-flow fan and a heat exchanger, the volute assembly for the air conditioner comprises a volute, an air outlet channel is defined, an inlet of the air channel is suitable for communicating with the cross-flow fan, and an outlet of the fan is suitable for communicating with the heat exchanger; the volute tongue is arranged in the air duct; wherein the volute tongue is detachably connected with the volute. The volute tongue is detachably connected with the volute, so that the volute tongue can be independently detached, installed and replaced, the volute and the volute tongue can be independently produced and machined, the situation that the whole volute cannot be used due to machining errors of the volute tongue can be avoided, the machining complexity and difficulty are reduced, and the machining cost of the volute and the volute tongue is also reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the air conditioning technical field, for example, relates to a volute assembly for air conditioner and air conditioner. BACKGROUND

[0002] At present, the air conditioner indoor unit includes the suction type indoor unit, and the heat exchanger of the suction type indoor unit is located at the air inlet side of the fan. The airflow after heat exchange with the heat exchanger flows through the fan and then flows out of the indoor unit. The suction type air conditioner indoor unit is subject to the problem of too much resistance caused by insufficient air inlet space at the rear volute tongue. The required height of the air inlet space is high, resulting in a large thickness of the air conditioner indoor unit.

[0003] Therefore, a blowing type indoor unit is disclosed in the related art, that is, the airflow flows through the cross-flow fan and the heat exchanger in sequence, so as to reduce the space required for air inlet, thereby reducing the thickness of the indoor unit. The indoor unit includes a volute, the volute defines an air duct, the cross-flow fan and the heat exchanger are communicated between the air ducts, and a volute tongue is arranged in the air duct, and the volute tongue is used to adjust the air outlet of the cross-flow fan.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0005] In the blowing type indoor unit in the related art, the heat exchanger is located at the air outlet side of the cross-flow fan. Therefore, the length of the air duct at the air outlet side is increased, and the airflow in the air duct is more affected by the structure in the air duct. In particular, when the fan blows air, the volute tongue is subjected to the most severe airflow impact, and therefore the shape and size of the volute tongue have a greater impact on the performance of the fan. The volute and the volute tongue in the related art are of an integrated structure. Therefore, the parameters of the volute tongue need to be ensured to be accurate when the volute is machined, which increases the complexity and difficulty of machining, resulting in a higher processing cost of the integrated volute and volute tongue.

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

[0007] In order to have a basic understanding of some aspects of the disclosed embodiments, the following is a simple summary. The summary is not a general review, nor is it intended to determine the key / important elements or to delineate the protection scope of these embodiments, but as a prelude to the detailed description below.

[0008] The embodiments of the present disclosure provide a volute assembly for air conditioner and air conditioner, so as to improve the disassembly and assembly convenience of the volute and the volute tongue.

[0009] The embodiment of the present disclosure provides a volute assembly for an air conditioner, the air conditioner comprising a cross-flow fan and a heat exchanger, the volute assembly comprising: a volute defining an air duct, an inlet of the air duct being adapted to communicate with the cross-flow fan, and an outlet of the fan being adapted to communicate with the heat exchanger; a volute tongue arranged in the air duct; wherein the volute tongue is detachably connected with the volute.

[0010] Optionally, the volute tongue is clamped with the volute.

[0011] Optionally, the volute comprises a first shell segment adapted to be located at one side of the cross-flow fan, and the volute tongue is arranged at one side of the first shell segment facing a center line of the air duct; the volute tongue comprises: a first volute plate; and a second volute plate, the first volute plate and the second volute plate being sequentially arranged along a flow direction of air flow in the air duct, one end of the first volute plate being connected with one end of the second volute plate, and a connection portion forming a bend; wherein the other end of the first volute plate is clamped with the first shell segment, and / or the other end of the second volute plate is clamped with the first shell segment.

[0012] Optionally, when the other end of the first volute plate is clamped with the first shell segment, the other end of the first volute plate is adapted to be clamped with an end portion of the first shell segment facing the cross-flow fan, and / or the other end of the second volute plate is clamped with the first shell segment, and the other end of the second volute plate is clamped with a wall surface of the first shell segment facing the center line of the air duct.

[0013] Optionally, when the other end of the first volute plate is adapted to be clamped with the end portion of the first shell segment facing the cross-flow fan, the other end of the first volute plate is configured with a first clamping hook, and the first clamping hook is clamped with the end portion of the first shell segment facing the cross-flow fan; and / or when the other end of the second volute plate is clamped with the wall surface of the first shell segment facing the center line of the air duct, the first shell segment is configured with a clamping hole, the other end of the second volute plate is configured with a second clamping hook, and the second clamping hook is clamped with the clamping hole, so that the second volute plate is connected with the first shell segment.

[0014] Optionally, when the other end of the first volute plate is configured with the first clamping hook, the number of the first clamping hooks is multiple, and the multiple first clamping hooks are sequentially and spacedly arranged along a length direction of the volute tongue; and / or when the other end of the second volute plate is configured with the second clamping hook, the number of the second clamping hooks is multiple, and the multiple second clamping hooks are sequentially and spacedly arranged along the length direction of the volute tongue.

[0015] Optionally, the volute tongue and the first shell segment enclose a sound attenuation cavity, and the second volute plate is configured with a sound attenuation hole, and the sound attenuation hole is in communication with the sound attenuation cavity.

[0016] Optionally, the volute assembly further comprises: a plurality of partitions located in the sound attenuation cavity, and the plurality of partitions are sequentially and spacedly arranged along the length direction of the volute tongue; wherein the plurality of partitions divide the sound attenuation cavity into a plurality of sub sound attenuation cavities, and each of the sub sound attenuation cavities is correspondingly provided with a plurality of sound attenuation holes.

[0017] Optionally, the volute further includes: a second shell section, adapted to be connected to the end of the first shell section away from the cross-flow fan; wherein the second shell section is inclined in a direction away from the center line of the airflow along the flow direction of the airflow in the air duct, and the inclination angle of the first shell section is smaller than the inclination angle of the second shell section.

[0018] This disclosure also provides an air conditioner, which includes an indoor unit. The indoor unit includes: a volute assembly for an air conditioner as described in any of the above embodiments; a cross-flow fan and a heat exchanger, both disposed in an air duct, and arranged sequentially along the airflow direction within the air duct.

[0019] The volute assembly and air conditioner for air conditioners provided in this disclosure can achieve the following technical effects:

[0020] The volute assembly for an air conditioner disclosed in this embodiment has a volute tongue detachably connected to the volute housing. This allows the volute tongue to be disassembled, installed, and replaced independently, and the volute housing and volute tongue can be manufactured separately. When used in blower-type indoor units, this avoids the entire volute housing becoming unusable due to manufacturing errors in the volute tongue, reducing manufacturing complexity and difficulty, and lowering the manufacturing costs of both the volute housing and volute tongue. Furthermore, when the air conditioner needs to be matched with different models of fans, only the volute tongue needs to be replaced, without replacing the entire volute housing. Alternatively, the cross-flow fan can be replaced without replacing it; simply replacing the volute tongue with one that has other functions, such as a noise-reducing volute tongue, can improve the noise reduction effect of the air conditioner. This also eliminates the need to replace the entire volute housing, facilitating the retrofitting of the volute tongue.

[0021] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0022] 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:

[0023] Figure 1 This is a schematic diagram of the structure of an indoor unit provided in an embodiment of this disclosure;

[0024] Figure 2 This is a structural schematic diagram of an indoor unit provided in an embodiment of this disclosure from another perspective;

[0025] Figure 3 This is a cross-sectional structural diagram of an indoor unit provided in an embodiment of this disclosure;

[0026] Figure 4 This is a cross-sectional structural schematic diagram of another indoor unit provided in an embodiment of this disclosure;

[0027] Figure 5 is another cross-sectional structure diagram of an indoor unit provided by an embodiment of the present disclosure;

[0028] Figure 6 is a structural diagram of one perspective of a volute provided by an embodiment of the present disclosure;

[0029] Figure 7 is a structural diagram of one perspective of a volute tongue provided by an embodiment of the present disclosure;

[0030] Figure 8 is a structural diagram of another perspective of a volute tongue provided by an embodiment of the present disclosure;

[0031] Figure 9 is a structural diagram of another perspective of a volute provided by an embodiment of the present disclosure.

[0032] Reference signs:

[0033] 10, volute; 101, first shell segment; 102, second shell segment; 103, clamping hole; 104, pressure relief channel; 105, air duct; 20, volute tongue; 201, first volute plate; 202, second volute plate; 203, first clamping hook; 204, second clamping hook; 205, sound hole; 206, sound cavity; 207, partition plate; 208, pressure relief hole; 209, step structure; 210, exhaust grid; 212, first return air channel; 213, second return air channel; 214, air duct side plate; 215, first flow guide rib; 216, second flow guide rib; 30, machine shell; 301, air inlet; 302, air outlet; 303, cross-flow fan; 304, heat exchanger; 305, side plate. DETAILED DESCRIPTION

[0034] In order to enable a person skilled in the art to more fully understand the features and technical contents of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings, which are only used for reference and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be simplified to facilitate the drawings.

[0035] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances in order to describe the embodiments of the present disclosure. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0036] 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.

[0037] 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.

[0038] Unless otherwise stated, the term "multiple" means two or more.

[0039] 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.

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0041] For ease of description, the directions up, down, left, right, front, and back in this application are as follows: Figure 1 As shown, the length direction of the indoor unit refers to the left-right direction, the width direction refers to the front-back direction, and the height or thickness direction refers to the up-down direction.

[0042] Combination Figures 1 to 9 As shown, this embodiment of the present disclosure provides a volute assembly for an air conditioner. The volute assembly includes a volute 10 and a volute tongue 20. The volute 10 defines an air duct 105. The inlet of the air duct 105 is adapted to communicate with a cross-flow fan 303, and the outlet of the fan is adapted to communicate with a heat exchanger 304. The volute tongue 20 is disposed within the air duct 105. The volute tongue 20 is detachably connected to the volute 10. The volute tongue 20 is adapted to correspond to the impeller of the cross-flow fan 303.

[0043] In the embodiment of the present disclosure, the volute tongue 20 is detachably connected with the volute 10, and the volute tongue 20 can be individually detached and replaced. When it is necessary to match impellers of different types, only the volute tongue 20 needs to be replaced, and the entire volute 10 does not need to be replaced. Alternatively, the impeller can not be replaced, and only the volute tongue with other functions, such as the volute tongue with the function of reducing noise, can improve the noise reduction effect in the air duct, so that the entire volute 10 does not need to be replaced, and the volute tongue 20 is convenient to install. The detachability of the volute tongue 20 greatly improves the versatility of the volute 10 and reduces the cost. Moreover, the detachability of the volute tongue 20 facilitates the maintenance and replacement of the volute 10. The volute 10 and the volute tongue 20 can be individually manufactured and processed, so that the volute tongue 20 processing failure does not cause the entire volute 10 to be unusable, the processing complexity and difficulty are reduced, and the processing cost of the volute 10 and the volute tongue 20 is reduced.

[0044] Optionally, as shown in Figures 5 to 8 The volute tongue 20 is clamped with the volute 10.

[0045] In the embodiment of the present disclosure, the volute tongue 20 is clamped with the volute 10, so that compared with the screw connection mode, when the volute tongue 20 is installed and detached, each screw does not need to be operated, and the detachability of the volute tongue 20 is improved. In this way, the versatility of the volute 10 is improved, the detachability is improved, and the maintenance and detachability of the volute tongue 20 and the volute 10 are improved.

[0046] Optionally, as shown in Figure 5 and Figure 6 The volute 10 includes a first shell segment 101, the volute tongue 20 is arranged on one side of the first shell segment 101 facing the center of the air duct 105, and the volute tongue 20 is detachably connected with the first shell segment 101.

[0047] In the embodiment of the present disclosure, the volute tongue 20 is detachably installed on the first shell segment 101, so that the volute tongue 20 is located in the air duct 105, thereby facilitating the cooperation of the volute tongue 20 with the impeller to blow air.

[0048] Optionally, the bottom wall of the air duct includes the first shell segment 101, the first shell segment 101 is located on one side of the cross-flow fan, one end of the first shell segment 101 faces the impeller, and the volute tongue is installed on the first shell segment 101, thereby facilitating the cooperation of the volute tongue with the impeller.

[0049] Optionally, the volute tongue 20 is clamped with the first shell segment 101.

[0050] In the embodiment of the present disclosure, the volute tongue 20 is detachably connected with the first shell segment 101 through clamping, and the clamping connection mode is simple to operate, stable in connection, and easy to detach.

[0051] Optionally, as shown in Figure 5As shown, the volute tongue 20 includes a first volute plate 201 and a second volute plate 202, the first volute plate 201 and the second volute plate 202 are sequentially arranged along the airflow flowing direction in the air duct 105, one end of the first volute plate 201 is connected with one end of the second volute plate 202, and the connection forms a bend, and the bend is towards the center line of the air duct 105. Wherein, the other end of the first volute plate 201 is clamped with the first shell segment 101, and / or the other end of the second volute plate 202 is clamped with the first shell segment 101.

[0052] In the embodiment of the present disclosure, the volute tongue 20 is divided into the first volute plate 201 and the second volute plate 202, the first volute plate 201 and the second volute plate 202 form a bend, the first volute plate 201 is used to cooperate with the impeller to make the airflow form an eccentric vortex in the impeller, and the second volute plate 202 is used to guide the airflow to flow in the air duct 105. The other end of the first volute plate 201 and / or the other end of the second volute plate 202 are connected with the first shell 10 in a clamping manner, so that both ends of the volute tongue 20 can be connected with the first shell segment 101, so that the connection stability of the volute tongue 20 can be provided, and the volute tongue 20 is prevented from being affected by the airflow to fall off and deviate. Moreover, the volute tongue 20 is disassembled and installed from both ends, so that the disassembly and assembly operation of the volute tongue 20 is facilitated.

[0053] Optionally, when the other end of the first volute plate 201 is clamped with the first shell segment 101, the other end of the first volute plate 201 is configured with a first clamping hook 203, and the first clamping hook 203 is clamped with the end of the first shell segment 101 towards the cross-flow fan 303.

[0054] In the embodiment of the present disclosure, the first volute plate 201 is clamped with the first end of the first shell segment 101 through the first clamping hook 203, so that the first volute plate 201 can be stably connected with the first end of the first shell segment 101, and the connection and disassembly of the first volute plate 201 with the first shell segment 101 can be realized by moving the first volute plate 201.

[0055] Optionally, as shown, Figure 5 The first shell segment 101 includes a first shell segment body and a first end plate, the first end plate is connected to the end of the first shell segment 101 towards the impeller, and the first end plate extends downward, wherein the first volute plate 201 is connected with the first end plate. In this way, the connection of the first volute plate 201 and the first shell segment 101 is more convenient and stable.

[0056] Optionally, the first clamping hook 203 is clamped at the lower end of the first end plate.

[0057] Optionally, the other end of the second volute plate 202 is clamped with the first shell segment 101, and the other end of the second volute plate 202 is clamped with the wall surface of the first shell segment 101 facing the center line of the air duct 105. In the embodiment of the present disclosure, the first shell segment 101 is relatively long, and the other end of the second volute plate 202 is clamped with the wall surface of the first shell segment 101 facing the center line of the air duct 105, so as to improve the connection stability of the second volute plate 202.

[0058] Optionally, when the second volute plate 202 is connected with the wall surface of the first shell segment 101 facing the center line of the air duct 105, the first shell segment 101 is provided with a clamping hole 103, and the other end of the second volute plate 202 is provided with a second clamping hook 204. When the second clamping hook 204 is clamped with the clamping hole 103, the second volute plate 202 is connected with the first shell segment 101.

[0059] In the embodiment of the present disclosure, the second volute plate 202 is clamped with the first shell segment 101 through the second clamping hook 204 and the clamping hole 103, so that the second volute plate 202 can be connected with the first shell segment 101.

[0060] Optionally, the clamping hole 103 penetrates the first shell segment along the thickness direction of the first shell segment, so that the second clamping hook can penetrate the first shell segment through the clamping hole 103 and be clamped with the first shell segment, so as to improve the connection stability of the second clamping hook and the first shell segment.

[0061] Optionally, the second clamping hook 204 is clamped with the clamping hole 103 facing the wall surface of the impeller, so that the second clamping hook 204 and the clamping hole 103 can be stably connected.

[0062] Optionally, when the other end of the first volute plate 201 is provided with the first clamping hook 203, the number of the first clamping hook 203 is multiple, and the multiple first clamping hooks 203 are sequentially and spacedly arranged along the length direction of the volute tongue 20.

[0063] In the embodiment of the present disclosure, the other end of the first volute plate 201 is provided with multiple first clamping hooks 203, so as to improve the connection strength of the first volute plate 201 and the first shell segment 101.

[0064] Optionally, as shown in FIG. 1, Figure 6 when the other end of the second volute plate 202 is provided with the second clamping hook 204, the number of the second clamping hook 204 is multiple, and the multiple second clamping hooks 204 are sequentially and spacedly arranged along the length direction of the volute tongue 20.

[0065] In the embodiment of the present disclosure, the second volute plate 202 is also provided with multiple second clamping hooks 204, so as to improve the connection strength of the second volute plate 202 and the first shell segment 101, and further ensure the connection strength of the volute tongue 20 and the first shell segment 101.

[0066] Optionally, as shown in FIG. 1, Figure 8As shown, the volute tongue 20 and the first shell segment 101 enclose the sound attenuation cavity 206, and the second volute plate 202 is configured with sound attenuation holes 205 that are in communication with the sound attenuation cavity 206.

[0067] In the embodiments of the present disclosure, the sound attenuation cavity has only one sound attenuation hole 205, and the sound attenuation hole 205 and the sound attenuation cavity 206 form a Helmholtz sound attenuation cavity. The sound attenuation hole 205 and the sound attenuation cavity 206 form a resonator. The airflow in the air duct 105 enters the sound attenuation cavity 206 through the sound attenuation hole 205, which can cause periodic vibration of the air in the sound attenuation cavity 206. The vibrating air in the sound attenuation cavity 206 interferes with the sound wave in the air duct 105, which can produce a damping effect, thereby weakening or eliminating noise of a specific frequency. In this way, the noise reduction function is achieved. The volute tongue 20 can effectively absorb the noise in the air duct 105 through the sound attenuation hole 205 and the sound attenuation cavity 206, which can weaken the interference between the airflow and the cross-flow fan 303 structure, change the sound source flow field of the cross-flow fan 303, and improve the noise performance.

[0068] Optionally, as shown in Figure 8 As shown, the cross-flow fan 303 includes a plurality of partitions 207, and the plurality of partitions 207 are sequentially and spacedly arranged along the length direction of the volute tongue 20. The plurality of partitions 207 divide the sound attenuation cavity 206 into a plurality of sub-sound attenuation cavities, and each sub-sound attenuation cavity is provided with a plurality of sound attenuation holes 205.

[0069] In the embodiments of the present disclosure, the partitions 207 divide the sound attenuation cavity 206 enclosed by the volute tongue 20 and the first shell segment 101 into a plurality of sub-sound attenuation cavities, so that the volute tongue 20 can uniformly reduce noise along the length direction and improve the noise reduction effect.

[0070] Optionally, the sound attenuation holes 205 are arranged in multiple rows and multiple columns to increase the sound absorption area of the sound attenuation holes 205.

[0071] Optionally, the sound attenuation holes 205 are circular holes, square holes, or polygonal holes.

[0072] Optionally, as shown in Figure 5 and Figure 6 As shown, the volute casing 10 further includes a second shell segment 102, and the second shell segment 102 is adapted to be connected to the end of the first shell segment 101 away from the cross-flow fan 303. The second shell segment 102 is arranged to tilt away from the center line of the air duct 105 along the flow direction of the airflow in the air duct 105, and the tilt angle of the first shell segment 101 is smaller than the tilt angle of the second shell segment 102.

[0073] In the embodiments of the present disclosure, the second shell segment 102 is arranged to be inclined, so that the flow area of the air duct 105 corresponding to the second shell segment 102 can be increased, so that the air flow velocity in the air duct 105 can be reduced, the flow velocity difference of the air flow at the center and the periphery of the air duct 105 can be reduced, the noise in the air duct 105 is reduced, and the heat exchange efficiency of the air flow in the air duct 105 and the heat exchanger 304 is improved. The inclination angle of the first shell segment 101 is smaller than the inclination angle of the second shell segment 102. Since the first shell segment 101 is connected with the volute tongue 20, the slope of the first shell segment 101 is small or no inclination, which facilitates the assembly of the first shell segment 101 and the volute tongue 20.

[0074] Optionally, the bottom wall of the air duct comprises a first shell segment and a second shell segment.

[0075] Optionally, the distance between the top wall of the air duct and the bottom wall of the air duct gradually increases along the flow direction of the air flow in the air duct, so that the flow area of the air duct gradually increases along the flow direction of the air flow, the flow velocity difference of the air flow at the center and the periphery of the air duct 105 is reduced, the noise in the air duct 105 is reduced, and the heat exchange efficiency of the air flow in the air duct 105 and the heat exchanger 304 is improved.

[0076] In some optional embodiments, the first shell segment 101 is arranged to be inclined in a direction away from the center line of the air duct 105 along the flow direction of the air flow in the air duct 105. In this way, the first shell segment 101 is also arranged to be inclined, so that the processing difficulty of the first shell segment 101 can be reduced.

[0077] In other optional embodiments, the extension direction of the first shell segment 101 is parallel to the center line of the air duct 105. In this way, the first shell segment 101 has no inclination angle, and the inclination angle of the second volute plate 202 is controllable after the volute tongue 20 is installed on the first shell segment 101, without the need to additionally adjust the installation position of the volute tongue 20, thereby improving the installation and use convenience of the volute tongue 20.

[0078] In other optional embodiments, as shown in Figure 6 The second volute plate 202 is provided with a pressure relief hole 208, and the higher pressure vortex flow in the air duct 105 can be discharged through the pressure relief hole 208 to achieve pressure relief, so that the air flow in the entire air duct 105 becomes relatively smooth, the position of the eccentric vortex becomes relatively stable, the turbulence is reduced, and the noise is reduced. In addition, the first volute plate 201 is not provided with a pressure relief hole 208, and the pressure relief hole 208 is arranged on the second volute plate 202, so that pressure relief can be achieved, and the air in the air duct 105 is prevented from being discharged through the first volute plate 201 to affect the air volume of the indoor unit.

[0079] Optionally, the second volute plate 202 comprises a pressure relief area and a non-pressure relief area, and the pressure relief area and the non-pressure relief area are sequentially and spacedly arranged along the length direction of the volute tongue 20, wherein the pressure relief hole 208 is arranged in the pressure relief area. In this way, when the airflow in the air duct 105 impacts the volute tongue 20, the airflow reaches the pressure relief area and the non-pressure relief area at different times, thereby effectively avoiding the resonance peak caused by the superposition of the same frequency band pulses, so as to reduce the noise value.

[0080] Optionally, the first shell segment 101 is provided with a pressure relief channel 104 which is in communication with the pressure relief hole 208.

[0081] In the embodiment of the present disclosure, the first shell segment 101 is provided with the pressure relief channel 104, so that the airflow flowing out of the pressure relief hole 208 can be smoothly discharged from the air duct 105.

[0082] Optionally, the second clamping hook 204 is clamped with the pressure relief channel 104. Here, the pressure relief channel 104 can not only discharge the airflow of the pressure relief hole 208, but also provide a connection position for the second clamping hook 204, without the need to additionally open a clamping hole 103 to set the clamping hole 103, thereby increasing the use of the pressure relief channel 104 and ensuring the strength of the first shell segment 101.

[0083] Optionally, the air duct 105 is provided with a noise reduction structure. In the embodiment of the present disclosure, in addition to setting the sound reduction hole 205 or the pressure relief hole 208 on the volute tongue 20 to reduce noise, the noise reduction structure can also be set in the air duct 105, so as to reduce the noise in the air duct 105, thereby reducing the noise of the indoor unit during operation and improving the user experience.

[0084] Optionally, as shown in Figure 3 the partial wall of the air duct 105 protrudes towards the inside of the air duct 105 to form a step structure 209, the step structure 209 is used to prevent the airflow in the air duct 105 from flowing back, and the noise reduction structure comprises the step structure 209.

[0085] In the embodiment of the present disclosure, the step structure 209 can prevent the airflow in the air duct 105 from flowing back. Since the heat exchanger 304 is located on the air outlet side of the cross-flow fan 303, the airflow at the heat exchanger 304 has a large resistance, and the airflow at the end of the air duct 105 close to the heat exchanger 304 will have a part of backflow phenomenon along the boundary of the air duct 105, which will cause the internal flow of the air duct 105 to be disorderly and the noise value to be high. The step structure 209 is arranged in the air duct 105 and protrudes towards the inside of the air duct 105, so that the step structure 209 can prevent the airflow in the air duct 105 from flowing back, thereby forcing the airflow in the air duct 105 to be smooth, which can reduce the noise in the air duct 105 and further reduce the noise of the indoor unit. In addition, the step structure 209 prevents the airflow from flowing back, which can also avoid the airflow in the air duct 105 from being disorderly, stabilize the internal flow field of the airflow, and further ensure the air volume of the indoor unit.

[0086] Optionally, the stepped structure 209 comprises one or more steps, when the stepped structure 209 comprises a plurality of steps, the plurality of steps gradually increase in height in the direction from the heat exchanger 304 to the cross-flow fan 303.

[0087] In the embodiments of the present disclosure, the stepped structure 209 can be provided with one step or a plurality of steps, when a plurality of steps are provided, the height of the steps gradually increases in the direction away from the heat exchanger 304, so that the plurality of steps can sequentially and gradually guide the airflow to form an airflow vortex, avoid the formation of violent airflow collision in the air duct 105, thereby effectively reducing the noise, avoiding the surge noise caused by the backflow of the airflow, and ensuring the smoothness of the airflow in the air duct 105 and the outflow effect.

[0088] Optionally, as shown in Figure 3 , Figure 4 and Figure 9 , the side wall of the air duct 105 is provided with an exhaust passage, the exhaust passage communicates the outside of the air duct 105 and the inside of the air duct 105, and the noise reduction structure comprises the exhaust passage.

[0089] In the embodiments of the present disclosure, since the heat exchanger 304 has relatively large resistance, after the airflow at the end of the air duct 105 is subjected to resistance, a vortex phenomenon will be formed at the air outlet 302 of the air duct 105, which will cause internal turbulence, affect the air volume and also affect the noise value. The exhaust passage is arranged on the side wall of the air duct 105, which can exhaust the airflow in the air duct 105, eliminate the airflow vortex, and force the internal airflow to be smooth, thereby reducing the noise in the air duct 105. In addition, the exhaust passage can exhaust the airflow vortex in the air duct 105, stabilize the internal flow field of the airflow, and thereby ensure the air volume of the indoor unit.

[0090] Optionally, at least one of the left side wall and the right side wall of the air duct 105 is provided with an exhaust passage, and the distance between the center of the exhaust passage and the heat exchanger 304 is less than the distance between the center of the exhaust passage and the cross-flow fan 303.

[0091] In the embodiments of the present disclosure, the heat exchanger 304 is located at the end of the air duct 105, therefore, the airflow at the position close to the heat exchanger 304 in the air duct 105 has relatively large resistance, and more vortexes are formed, and the position of the exhaust passage is closer to the heat exchanger 304, which can better exhaust the vortex in the air duct 105, force the airflow in the air duct 105 to be smooth, reduce the noise in the air duct 105, and stabilize the flow field of the airflow.

[0092] Optionally, the exhaust passage comprises an exhaust grille 210, the exhaust grille 210 is in a strip shape, and the two ends of the exhaust grille 210 in the height direction are located on the upper and lower sides of the center line of the air duct 105, respectively.

[0093] In the embodiments of the present disclosure, the exhaust passage is in a grid shape, and the opening area of the grid is larger than the opening area of the hole, so that the air flow resistance of the exhaust grid 210 can be reduced, the exhaust effect and the exhaust volume can be improved, the vortex in the air duct 105 can be effectively reduced, and the noise can be reduced. The exhaust grid 210 extends along the height direction of the air duct 105, and the two ends of the exhaust grid 210 are located on the upper and lower sides of the center line of the air duct 105, respectively. In this way, the exhaust area of the air duct 105 in the height direction is increased, and the noise reduction effect and the effect of stabilizing the flow field are improved.

[0094] Optionally, the exhaust passage includes one exhaust grid 210 or a plurality of exhaust grids 210 arranged side by side. The exhaust grid 210 is arranged obliquely and has an angle with the horizontal direction.

[0095] In the embodiments of the present disclosure, the number of the exhaust grid 210 can be set differently according to the different air ducts 105. The exhaust grid 210 is arranged obliquely, so that the exhaust area of the exhaust grid 210 can be further increased, the exhaust effect and the exhaust speed can be improved, and the noise reduction effect and the effect of stabilizing the flow field can be improved. Moreover, the exhaust grid 210 can be inclined along the flow direction of the air flow in the air duct 105, so that the exhaust effect of the air flow can also be improved. Optionally, in actual application, the exhaust grid 210 can be inclined upward or downward along the flow direction of the air flow in the air duct 105. In actual use, the inclination direction of the exhaust grid 210 can be adjusted according to the arrangement of the heat exchanger 304. Preferably, the inclination direction of the first heat exchange section and the exhaust grid 210 is the same along the flow direction of the air flow in the air duct 105.

[0096] Optionally, as shown in FIG. 6, the exhaust passage includes a plurality of exhaust grids 210 arranged side by side. Figure 4 Figure 4 ​The middle arrow indicates the flow direction of the air flow in the first return air passage 212 and the second return air passage 213. The indoor unit comprises a casing 30, the casing 30 defines a receiving cavity with an air inlet 301 and an air outlet 302, the volute 10 is adapted to be located in the casing 30, the inlet of the air duct 105 is in communication with the air inlet 301, the outlet of the air duct 105 is adapted to be in communication with the air outlet 302, the casing 30 and the volute 10 are adapted to define the first return air passage 212, the first return air passage 212 is in communication between the exhaust passage and the air inlet 301, so that the air flow of the exhaust passage can flow to the air inlet 301 through the first return air passage 212; and / or, the volute 10 defines the second return air passage 213, the second return air passage 213 is in communication between the exhaust passage and the air inlet 301, so that the air flow of the exhaust passage can flow to the air inlet 301 through the second return air passage 213. In the embodiment of the present disclosure, the air flow discharged by the exhaust passage flows back to the air inlet 301 through the first return air passage 212 and / or the second return air passage 213, here, the first return air passage 212 and the second return air passage 213 are both located in the casing 30, that is, the air flow in the air duct 105 discharged by the exhaust passage will not flow to the environment outside the casing 30, but will return to the air inlet 301 inside the casing 30 to circulate again. Since the indoor unit is located in the ceiling, the space in the ceiling is relatively closed, the air flow of the exhaust passage will not be discharged outside the indoor unit, that is, will not enter the ceiling, will not affect the pressure in the ceiling, will not cause the air flow in the ceiling to be turbulent to cause dust to fly, and the dust in the ceiling will not enter the air duct 105 through the exhaust passage, avoiding the dust entering the air duct 105 to affect the operation of the fan, thereby ensuring the normal operation of the indoor unit.

[0097] Optionally, when the first return air passage 212 is defined between the casing 30 and the volute 10, the casing 30 comprises a side plate 305, the side plate 305 is located outside the left side wall of the air duct 105 and / or the right side wall of the air duct 105, and the side plate 305 and the left side wall of the air duct 105 and / or the right side wall of the air duct 105 enclose the first return air passage 212.

[0098] In the embodiment of the present disclosure, the side plate 305 and the left side wall of the volute 10 and / or the right side wall of the air duct 105 can directly enclose the first return air passage 212, so that the side plate 305 can avoid the air flow discharged by the exhaust passage to flow outside the casing 30.

[0099] Optionally, when the volute 10 defines the second return air passage 213, the volute 10 comprises an air duct body and an air duct side plate 214, the air duct body defines the air duct 105; the air duct side plate 214 is connected with the air duct body and is located outside the exhaust passage, and the air duct side plate 214 and the air duct body enclose the second return air passage 213.

[0100] In this embodiment, the volute 10 itself can also define a second return air passage 213. The air duct side plate 214 is located outside the exhaust passage. In this way, when there are other components between the volute 10 and the side plate 305, the air duct side plate 214 can prevent the airflow of the exhaust passage from flowing to other components, and can ensure that the airflow discharged from the exhaust passage can flow to the air inlet 301 through the second return air passage 213.

[0101] Optionally, the refrigerant pipe connected to the heat exchanger 304 is located on the side of the duct side plate 214 away from the duct 105 body. In this way, the duct side plate 214 can prevent the airflow from the exhaust channel from exchanging heat with the refrigerant pipe, and prevent the temperature change of the refrigerant in the refrigerant pipe from affecting the normal operation of the indoor unit.

[0102] Optionally, such as Figure 9 As shown, the air duct 105 is also provided with guide ribs, which are located on the inner wall of the air duct 105. The guide ribs include first guide ribs 215, and there may be one or more first guide ribs 215, with at least one first guide rib 215 located in the middle of the length direction of the air duct 105. The noise reduction structure includes guide ribs. When air flows through the air duct 105 to the first guide rib 215, the first guide rib 215 can rectify the airflow, making the airflow within the air duct 105 approximately uniformly distributed along the length direction of the volute 10. This stabilizes the position of the eccentric vortex, prevents eccentric vortex movement, avoids backflow, and thus reduces noise. Furthermore, the method of setting the first guide rib 215 is low-cost and easy to implement. Figure 9 The middle arrow indicates the length direction of the air duct 105.

[0103] Optionally, there may be multiple first guide ribs 215, which are arranged sequentially along the length of the air duct 105. The more uniformly the first guide ribs 215 are distributed along the length of the air duct 105, the better the rectification effect. Specifically, the multiple first guide ribs 215 are located on opposite sides of the at least one first guide rib 215 and / or the distance between two adjacent first guide ribs 215 is greater than or equal to 30 mm and less than or equal to 120 mm. Here, a distance of less than 30 mm between two adjacent first guide ribs 215 would be too dense, increasing airflow resistance, while a distance greater than 120 mm would degrade the rectification effect.

[0104] Optionally, the guide ribs extend along the airflow direction within the air duct 105. This facilitates guiding airflow and achieving rectification.

[0105] Optionally, the guide ribs also include a second guide rib 216, which is provided on the inner wall surface of the left side wall of the air duct 1051 and / or the inner wall surface of the right side wall of the air duct 105. In this way, the air duct 105 can also rectify the airflow in the left and right directions.

[0106] Optionally, the second guide ribs 216 are arranged on the wall surface of the air exhaust grilles 210 facing the air duct 105, and the second guide ribs 216 are connected between the plurality of air exhaust grilles 210, so that the second guide ribs 216 can not only play a flow regulating role, but also improve the strength of the air exhaust grilles 210, thereby ensuring the strength of the volute 10.

[0107] The disclosure also provides an air conditioner comprising the volute assembly for an air conditioner according to any one of the above embodiments.

[0108] The air conditioner provided by the disclosure has the beneficial effects of the volute assembly for an air conditioner according to any one of the above embodiments, and thus the details are not repeated here.

[0109] The air conditioner comprises an indoor unit and an outdoor unit, and the outdoor unit and the indoor unit are communicated through a refrigerant pipe and form a refrigerant circulation loop. Optionally, the indoor unit can be a ducted unit or other forms of air conditioners.

[0110] Optionally, as shown in Figure 1 and Figure 2 The indoor unit comprises the volute assembly for an air conditioner, and further comprises a housing 30 defining a receiving cavity with an air inlet 301 and an air outlet 302. The volute 10 is located in the receiving cavity, the inlet of the air duct 105 is communicated with the air inlet 301, and the outlet of the air duct 105 is communicated with the air outlet 302.

[0111] Optionally, the indoor unit further comprises a cross-flow fan 303 and a heat exchanger 304, both of which are arranged in the air duct 105, and the cross-flow fan 303 and the heat exchanger 304 are arranged in sequence along the airflow direction in the air duct 105.

[0112] In the disclosure, the cross-flow fan 303 and the heat exchanger are arranged along the airflow direction in the air duct 105, so as to reduce the distance between the cross-flow fan 303 and the air inlet 301 of the indoor unit, and reduce the air inlet resistance. Moreover, the heat exchanger 304 is located on the air outlet side of the cross-flow fan 303, and the length of the air duct 105 on the air outlet side of the cross-flow fan 303 is increased, so as to increase the air outlet area on the air outlet side, and the height of the air duct 105 on the air outlet side of the cross-flow fan 303 can be appropriately reduced, thereby reducing the thickness of the entire indoor unit. In this way, the installation of the indoor unit is facilitated, the thickness of the ceiling is reduced, and the user's experience is improved.

[0113] Optionally, the indoor unit is installed in a ceiling, the ceiling is provided with a return air inlet and an exhaust air outlet, the return air inlet corresponds to and communicates with the air inlet 301, and the exhaust air outlet corresponds to and communicates with the air outlet 302. In this way, the indoor air flows into the air duct 105 through the return air inlet and the air inlet 301, and is sequentially discharged into the indoor environment through the air outlet 302 and the exhaust air outlet after the heat exchanger 304.

[0114] Optionally, the bottom wall of the shell is provided with the air inlet 301, and the cross-flow fan 303 corresponds to the air inlet 301, wherein the opening area of the air inlet 301 is greater than or equal to the size of the cross-flow fan 303. In this way, the air inlet 301 is located on the bottom wall of the shell, and when the indoor unit is installed on the ceiling or the ceiling, the air inlet 301 faces downward, the cross-flow fan 303 is located above the air inlet 301, the cross-flow fan 303 can be directly maintained through the air inlet 301, and the cross-flow fan 303 can be disassembled through the air inlet 301. In this way, the maintenance convenience of the cross-flow fan 303 is improved, and the maintenance convenience of the indoor unit is also improved.

[0115] Optionally, the heat exchanger 304 is a fin heat exchanger 304, the heat exchanger 304 includes a plurality of fins arranged side by side and a heat exchange pipe, the heat exchange pipe is reciprocally bent and arranged between the plurality of fins, and the heat exchange pipe is filled with refrigerant.

[0116] Optionally, the air inlet 301 is arranged on the front side of the bottom wall of the shell, the air outlet 302 is arranged on the rear side wall of the shell, and the air outlet 302 corresponds to the heat exchanger 304. In this way, the air flowing through the heat exchanger 304 can directly flow out from the air outlet 302.

[0117] The above description and drawings sufficiently illustrate the embodiments of the present disclosure to enable one skilled in the art to practice them. Other embodiments can include structural and other changes. The embodiments represent only the possible variations. Individual components and functions are optional unless explicitly required, and the order of operations can be changed. Parts and features of some embodiments can be included in or replace parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A scroll casing assembly for an air conditioner, the air conditioner including a cross flow fan and a heat exchanger, characterized in that, A volute assembly for an air conditioner comprises: a volute defining an air duct, an inlet of the air duct being adapted to communicate with a cross-flow fan, and an outlet of the fan being adapted to communicate with a heat exchanger; a volute tongue provided in the air duct; wherein the volute tongue is detachably connected with the volute.

2. The volute assembly for the air conditioner according to claim 1, wherein the volute tongue is clamped with the volute.

3. The volute assembly for the air conditioner according to claim 2, wherein the volute comprises a first shell segment adapted to be located at one side of the cross-flow fan, and the volute tongue is provided at one side of the first shell segment facing a center line of the air duct; the volute tongue comprises: a first volute plate; a second volute plate, the first volute plate and the second volute plate being sequentially arranged along a flow direction of air flow in the air duct, one end of the first volute plate being connected with one end of the second volute plate, and a connection portion of the first volute plate and the second volute plate forming a bend; wherein the other end of the first volute plate is clamped with the first shell segment, and / or the other end of the second volute plate is clamped with the first shell segment.

4. The volute assembly for the air conditioner according to claim 3, wherein when the other end of the first volute plate is clamped with the first shell segment, the other end of the first volute plate is adapted to be clamped with an end of the first shell segment facing the cross-flow fan, and / or the other end of the second volute plate is clamped with the first shell segment, and the other end of the second volute plate is clamped with a wall surface of the first shell segment facing the center line of the air duct.

5. The volute assembly for the air conditioner according to claim 4, wherein when the other end of the first volute plate is adapted to be clamped with the end of the first shell segment facing the cross-flow fan, the other end of the first volute plate is configured with a first clamping hook, and the first clamping hook is clamped with the end of the first shell segment facing the cross-flow fan; and / or when the other end of the second volute plate is clamped with the wall surface of the first shell segment facing the center line of the air duct, the first shell segment is configured with a clamping hole, the other end of the second volute plate is configured with a second clamping hook, and the second clamping hook is clamped with the clamping hole when the second volute plate is connected with the first shell segment.

6. The volute assembly for the air conditioner according to claim 5, wherein when the other end of the first volute plate is configured with the first clamping hook, the number of the first clamping hook is multiple, and the multiple first clamping hooks are sequentially and spacedly arranged along a length direction of the volute tongue; and / or when the other end of the second volute plate is configured with the second clamping hook, the number of the second clamping hook is multiple, and the multiple second clamping hooks are sequentially and spacedly arranged along the length direction of the volute tongue.

7. The volute assembly for the air conditioner according to claim 3, wherein the volute tongue and the first shell segment enclose a sound attenuation cavity, and the second volute plate is configured with a sound attenuation hole, and the sound attenuation hole is communicated with the sound attenuation cavity.

8. The scroll casing assembly for an air conditioner of claim 7, wherein, further comprising: a plurality of partitions provided in the sound attenuation cavity, and the plurality of partitions are sequentially and spacedly arranged along the length direction of the volute tongue; wherein the plurality of partitions divide the sound attenuation cavity into a plurality of sub sound attenuation cavities, and each of the sub sound attenuation cavities is provided with a plurality of sound attenuation holes.

9. The scroll casing assembly for an air conditioner according to any one of claims 3 to 7, characterized by, the volute further comprises: a second shell segment adapted to be connected at an end of the first shell segment away from the cross-flow fan; wherein the second shell segment is inclinedly arranged along the flow direction of the air flow in the air duct away from the center line of the air duct, and an inclination angle of the first shell segment is smaller than an inclination angle of the second shell segment.

10. An air conditioner characterized by comprising: comprising an indoor unit, the indoor unit comprising: the volute assembly for the air conditioner according to any one of claims 1 to 9. The cross-flow fan and the heat exchanger are arranged in the air duct, and the cross-flow fan and the heat exchanger are arranged in sequence along the air flow direction in the air duct.

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