Air conditioner

Abstract

The utility model discloses an air conditioner, the air conditioner includes: casing, heat exchange component and fan component, the casing includes rear box bottom plate, and the rear box bottom plate has the air intake area on, and heat exchange component is located in the casing, and is located in the front of air intake area, and fan component is located in the casing, and is located in the front of heat exchange component, and fan component includes the centrifugal fan wheel of axis along the extension in front -back direction, and air intake area, heat exchange component and centrifugal fan wheel are set gradually along the air current through the wind direction. Through setting fan component in the front of heat exchange component, adopt the air suction type heat exchange, and the indoor wind first passes through heat exchange component and then through centrifugal fan wheel, and it is favorable to promote the heat exchange efficiency of air current and the heat exchange uniformity of air current, and pass through air intake area, heat exchange component and centrifugal fan wheel in turn, and the flow path of air current is shorter and the flow direction is direct, and the stability of air current flow is strong, and can further promote the heat exchange effect, and air current is also not easy to produce turbulence and is favorable to reduce the noise.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning equipment technology, and in particular to an air conditioner. Background Technology

[0002] Air conditioners are a common appliance in modern daily life and are widely used in both production and daily life. However, air conditioners have drawbacks such as poor heat exchange between the airflow and the heat exchanger, and the tendency for airflow to generate turbulence, which increases noise in the indoor unit. These shortcomings suggest room for improvement. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention provides an air conditioner that can improve airflow heat exchange efficiency and has strong airflow stability, making it less prone to turbulence and increased noise.

[0004] An air conditioner according to an embodiment of the present invention includes: a housing, the housing including a rear box bottom plate having an air inlet area; a heat exchange component disposed within the housing and located in front of the air inlet area; and a fan component disposed within the housing and located in front of the heat exchange component, the fan component including a centrifugal impeller with its axis extending in a front-rear direction, the air inlet area, the heat exchange component, and the centrifugal impeller being arranged sequentially along the airflow direction.

[0005] According to the embodiment of the present invention, the air conditioner, by placing the fan component in front of the heat exchange component, adopts suction-type heat exchange. The indoor air first passes through the heat exchange component and then through the centrifugal impeller, which is beneficial to improving the heat exchange efficiency and uniformity of the airflow. Furthermore, by passing through the air inlet area, the heat exchange component, and the centrifugal impeller in sequence, the airflow path is shorter and the flow direction is more direct, resulting in strong airflow stability, which can further improve the heat exchange effect. The airflow is also less prone to turbulence, which helps to reduce noise.

[0006] In some embodiments, the heat exchange component is mounted on the bottom plate of the rear chamber.

[0007] In some embodiments, the heat exchange component and the rear box bottom plate are positioned and engaged by a first positioning component, which is used to restrict the relative movement of the heat exchange component relative to the rear box bottom plate in the vertical and / or horizontal directions.

[0008] In some embodiments, the first positioning component includes a positioning protrusion and a positioning groove, the positioning protrusion extending into the positioning groove for positioning engagement, and the positioning protrusion having a first connecting hole for connecting the heat exchange component and the rear box bottom plate.

[0009] In some embodiments, the first positioning component is disposed on the left and right sides of the air inlet area, the heat exchange component includes a heat exchanger and a sealing plate, there are two sealing plates and they are respectively disposed on the left and right sides of the heat exchanger, the sealing plates extend in the vertical direction, and the heat exchange component is positioned and engaged with the bottom plate of the rear box through the sealing plates.

[0010] In some embodiments, the first positioning component includes a first positioning protrusion disposed on the sealing plate and protruding rearward, and a first positioning groove disposed on the bottom plate of the rear box. The first positioning groove is disposed corresponding to and accommodates the first positioning protrusion. The shape and distribution of the first positioning protrusions on the two sealing plates are different.

[0011] In some embodiments, the two sealing plates are a first sealing plate and a second sealing plate, the width of the first sealing plate in the left-right direction is greater than the width of the second sealing plate in the left-right direction, the first positioning protrusion on the first sealing plate is formed as an elongated protrusion extending in the up-down direction, the extension length of the elongated protrusion is greater than half the length of the first sealing plate in the up-down direction, and the heat exchanger is connected to a refrigerant inlet / outlet pipe extending in the up-down direction on the side corresponding to the first sealing plate.

[0012] In some embodiments, the sealing plate has a second connection hole and a third connection hole, both of which are multiple holes spaced apart in the vertical direction. The second connection hole is located on the side of the first positioning component in the horizontal direction closer to the heat exchanger and is used for connecting the sealing plate to the heat exchanger. The third connection hole is located on the side of the first positioning component in the horizontal direction away from the heat exchanger and is used for connecting the sealing plate to the bottom plate of the rear chamber.

[0013] In some embodiments, the heat exchange component includes a heat exchanger, and both the rear box bottom plate and the heat exchanger are flat plates and are arranged in parallel.

[0014] In some embodiments, the heat exchange component includes a heat exchanger and an electric auxiliary heater. The electric auxiliary heater is located in front of the heat exchanger, and in a projection plane parallel to the bottom plate of the rear chamber, the projected area of ​​the electric auxiliary heater is smaller than the projected area of ​​the heat exchanger.

[0015] In some embodiments, the length direction of the electric auxiliary heater is left-right, and the left and right ends of the electric auxiliary heater are provided with mounting structures at positions extending beyond the left and right edges of the heat exchanger. The electric auxiliary heater is mounted on the heat exchanger and / or the bottom plate of the rear chamber through the mounting structures.

[0016] In some embodiments, the electric auxiliary heating includes a heating body, a support base, a cover plate, and a first wire. There are two support bases, which are respectively installed on the left and right sides of the heating body. Each support base has a protrusion extending toward the rear. The mounting structure is provided on the protrusion. The cover plate is detachably installed on the front side of one of the support bases and is used to cover the connection point between the first wire and the heating body.

[0017] In some embodiments, the centrifugal fan is positioned opposite the electric auxiliary heater and is also positioned relative to the center of the heat exchanger in the vertical direction.

[0018] In some embodiments, the air conditioner further includes a water collection tray located below the heat exchange component and mounted on the bottom plate of the rear compartment.

[0019] In some embodiments, the left and right ends of the water receiving tray are respectively positioned and engaged with the rear box bottom plate by a second positioning component, the second positioning component being used to restrict the relative movement of the water receiving tray relative to the rear box bottom plate in the vertical and / or horizontal directions.

[0020] In some embodiments, the upper part of the water receiving tray is provided with an overflow port; and / or, the water receiving tray has an inner wire structure and an outer wire structure, the inner wire structure being lower than the highest water level of the water receiving tray, the heat exchange component including a heat exchanger and an electric auxiliary heater, the electric auxiliary heater being located in front of the heat exchanger, the electric auxiliary heater being connected to a first wire, the first wire extending downward from the electric auxiliary heater into the water receiving tray being constrained by the inner wire structure, then extending upward from the top wall of the water receiving tray over to the outside of the water receiving tray and extending downward and being constrained by the outer wire structure.

[0021] In some embodiments, the housing further includes an air intake grille mounted on the rear box floor and disposed opposite to the air intake area, at least a portion of the air intake grille protruding from the rear side of the rear box floor, the air intake grille defining a receiving cavity opening towards the front for receiving the air intake filter.

[0022] In some embodiments, the air intake grille is detachably mounted on the rear box floor plate from the rear side, the edge of the air intake grille overlaps the rear surface of the rear box floor plate and is detachably connected to the rear box floor plate, the rear box floor plate is provided with ribs in the air intake area, there are multiple ribs and the air intake area is divided into multiple sub-areas, the air intake filter is provided on the rear side of the ribs, and the heat exchange component is provided on the front side of the ribs.

[0023] In some embodiments, the housing further includes a left side plate and a right side plate connected to the left and right sides of the rear box bottom plate, the air conditioner further includes a fan mounting plate, the fan mounting plate is disposed on the front side of the centrifugal impeller, the fan component further includes a drive motor connected to the centrifugal impeller, the drive motor is mounted on the fan mounting plate, and the left and right ends of the fan mounting plate are respectively mounted on the left side plate and the right side plate.

[0024] In some embodiments, the air conditioner further includes an air duct component, which is disposed within the housing and located in front of the heat exchange component. The centrifugal impeller is disposed within the air duct component, and the air duct component forms an air duct inlet behind the centrifugal impeller. The air duct component is sealed to the rear bottom plate to form an air inlet cavity on the rear side of the air duct component. The heat exchange component is disposed in the air inlet cavity, and the air duct formed within the air duct component communicates with the air inlet cavity through the air duct inlet.

[0025] In some embodiments, the duct component is an insulation material component, and / or the duct component includes a separately processed upper volute and a lower volute, which are spliced ​​together.

[0026] In some embodiments, the duct component includes an air outlet section extending upward from the centrifugal impeller, the air outlet section defining an air outlet, and a sound-absorbing grille provided within the air outlet section.

[0027] In some embodiments, the noise-absorbing grille includes a noise-absorbing portion and a grille portion, the grille portion extending rearward from the lower end of the air duct outlet, the noise-absorbing portion being disposed above the grille portion and forming a front-open noise-absorbing air duct with the grille portion.

[0028] In some embodiments, the silencing portion includes a guide portion and a side plate portion. The side plate portion is located on the left and right sides of the guide portion. The guide portion extends from the rear end of the grille portion toward the upper end of the air duct outlet. The lower end of the guide portion is rotatably connected to the rear end of the grille portion. The lower ends of the side plate portions on both sides are connected to the left and right ends of the grille portion respectively by a snap-fit ​​structure.

[0029] In some embodiments, the centrifugal impeller is a single impeller with its axis lower than the height center plane of the housing. The housing includes a front panel disposed on the front side of the fan. The upper part of the front panel has an air outlet, which is higher than the centrifugal impeller. The air conditioner also includes a duct component disposed within the housing and in front of the heat exchange component. The centrifugal impeller is disposed within the duct component. The duct component includes an air outlet section extending upward from the centrifugal impeller. The air outlet section defines an air outlet, which communicates with the air outlet.

[0030] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of an air conditioner according to an embodiment of the present invention;

[0032] Figure 2 This is a front view of an air conditioner according to an embodiment of the present invention;

[0033] Figure 3 It is based on Figure 2 Section II of the example shown;

[0034] Figure 4 This is an exploded view of the structure of an air conditioner according to an embodiment of the present invention;

[0035] Figure 5 This is an exploded view of the rear box bottom plate and heat exchange components according to an embodiment of the present utility model;

[0036] Figure 6 This is an assembly drawing of the rear box bottom plate and heat exchange components according to an embodiment of the present utility model;

[0037] Figure 7 It is based on Figure 6 The example shown is a BB cross-sectional view;

[0038] Figure 8 It is based on Figure 6 The example shown is a CC section view;

[0039] Figure 9 It is based on Figure 8 A magnified view of region D in the example shown;

[0040] Figure 10 It is based on Figure 7 A magnified view of region E in the example shown;

[0041] Figure 11 This is another exploded view of the rear box bottom plate and heat exchange components according to one embodiment of the present utility model;

[0042] Figure 12 This is an exploded view of the heat exchange component and water receiving tray according to an embodiment of the present invention;

[0043] Figure 13 This is a top view of a first sealing plate according to an embodiment of the present invention;

[0044] Figure 14This is a top view of the second sealing plate according to an embodiment of the present invention;

[0045] Figure 15 This is an assembly drawing of the rear box bottom plate, heat exchange component and fan component according to an embodiment of the present utility model;

[0046] Figure 16 It is based on Figure 15 The example shown is a cross-sectional view of section AA.

[0047] Figure 17 This is a schematic diagram of the structure of an electric auxiliary heater according to an embodiment of the present invention;

[0048] Figure 18 This is another schematic diagram of the electric auxiliary heating according to one embodiment of the present invention;

[0049] Figure 19 It is based on Figure 15 The example shown is a cross-sectional view of FF.

[0050] Figure 20 This is a schematic diagram of the structure of a water receiving tray according to an embodiment of the present utility model;

[0051] Figure 21 It is based on Figure 20 The example shown is a GG cross-sectional view;

[0052] Figure 22 This is another structural schematic diagram of a water receiving tray according to one embodiment of the present utility model;

[0053] Figure 23 This is an exploded view of a portion of the structure of an air conditioner according to an embodiment of the present invention;

[0054] Figure 24 This is a structural schematic diagram of the rear box bottom plate according to an embodiment of the present utility model;

[0055] Figure 25 This is a partial structural schematic diagram of an air conditioner according to an embodiment of the present invention;

[0056] Figure 26 This is an exploded view of another part of the structure of an air conditioner according to one embodiment of the present invention;

[0057] Figure 27 It is based on Figure 15 The HH cross-sectional view shown in the example;

[0058] Figure 28 This is a structural schematic diagram of the rear shell bottom plate and air duct component according to an embodiment of the present utility model;

[0059] Figure 29 It is based on Figure 28 Section II of the example shown;

[0060] Figure 30 This is a cross-sectional view of an air conditioner according to an embodiment of the present invention;

[0061] Figure 31 This is a schematic diagram of the structure of a sound-absorbing grille according to an embodiment of the present invention;

[0062] Figure 32 It is based on Figure 31 The example shown is a diagram of the sound-absorbing grille in its open state.

[0063] Figure label:

[0064] Air conditioner 100;

[0065] Housing 1; Rear box bottom plate 11; Air inlet area 11a; Sub-area 11a1; Rib 111; Air inlet grille 12; Receiving cavity 121; Left side plate 14; Right side plate 15; Front panel 16; Air outlet 11b;

[0066] Heat exchange component 2; heat exchange assembly 2a; heat exchanger 21; sealing plate 22; first sealing plate 221; second sealing plate 222; second connecting hole 223; third connecting hole 224; electric auxiliary heater 23; heating body 231; support base 232; protrusion 2321; seat cover plate 233; first wire 234; mounting structure 24; refrigerant inlet and outlet pipes 25;

[0067] Fan component 3; centrifugal impeller 31; centrifugal impeller shaft 31a; drive motor 32; fan mounting plate 33;

[0068] First positioning component 4; positioning protrusion 41; first positioning protrusion 41a; second positioning protrusion 41b; first connecting hole 411; positioning groove 42; first positioning groove 42a; second positioning groove 42b;

[0069] Second positioning component 5;

[0070] Water receiving tray 6; overflow outlet 61; inner cable bundle structure 62; outer cable bundle structure 63;

[0071] 7. Air duct component; 71. Air duct inlet; 7a. Air duct; 72. Upper volute; 73. Lower volute; 74. Air duct outlet section; 7b. Air duct outlet; 75. Stepped structure; 76.

[0072] Air inlet filter 8;

[0073] 9. Noise-absorbing grille; 91. Noise-absorbing section; 92. Grille section; 911. Guide section; 912. Side panel section;

[0074] Buckle structure 93; buckle hole 931; buckle 932. Detailed Implementation

[0075] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0076] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0077] The air conditioner 100 of this utility model is described below with reference to the accompanying drawings.

[0078] According to the embodiment of the present utility model, the air conditioner 100, such as Figures 1-4 As shown, the air conditioner 100 includes: a housing 1, a heat exchange component 2, and a fan component 3. The housing 1 includes a rear box bottom plate 11, and the rear box bottom plate 11 has an air inlet area 11a. The heat exchange component 2 is disposed inside the housing 1 and is located in front of the air inlet area 11a. The fan component 3 is disposed inside the housing 1 and is located in front of the heat exchange component 2. The fan component 3 includes a centrifugal impeller 31 with its axis 31a extending in the front-back direction. The air inlet area 11a, the heat exchange component 2, and the centrifugal impeller 31 are arranged sequentially along the airflow direction.

[0079] The housing 1 is the outer contour of the air conditioner 100. The housing 1 includes a rear bottom plate 11 located at the rear, and the rear bottom plate 11 has an air inlet area 11a, through which the air conditioner 100 can draw air. A heat exchange component 2 is disposed inside the housing 1 and located in front of the air inlet area 11a. The heat exchange component 2 exchanges heat with the airflow flowing into the housing 1 from the air inlet area 11a. A fan component 3 is also disposed inside the housing 1. The fan component 3 is used to drive the external airflow of the air conditioner 100 into the housing 1 from the air inlet area 11a, and to drive the airflow through the heat exchange component 2 for heat exchange, and to allow the airflow that has been heat-exchanged by the heat exchange component 2 to flow out of the air conditioner 100, so as to regulate the indoor ambient temperature outside the air conditioner 100.

[0080] The fan component 3 is located in front of the heat exchange component 2. The fan component 3 includes a centrifugal impeller 31 with its axis 31a extending in the front-rear direction. Airflow is drawn in along the axial direction of the centrifugal impeller 31 and then discharged along the radial direction of the centrifugal impeller 31. As a result, the fan component 3 has a smaller size in the front-rear direction, which can reduce the front-rear dimensions of the air conditioner 100 and help to reduce the volume of the air conditioner 100.

[0081] By placing the fan component 3 in front of the heat exchange component 2, the air conditioner 100 of this utility model embodiment adopts suction heat exchange. That is, under the driving action of the heat exchange component 2, the indoor air passes through the heat exchange component 2 first and then through the centrifugal fan wheel 31, which improves the heat exchange efficiency and heat exchange uniformity, and is less likely to generate turbulence and increase noise.

[0082] Furthermore, the axis 31a of the centrifugal impeller 31 extends in the front-to-back direction. The air inlet area 11a, the heat exchange component 2, and the centrifugal impeller 31 are arranged sequentially from back to front. When the airflow passes through the air inlet area 11a, the heat exchange component 2, and the centrifugal impeller 31 in sequence, the airflow path is shorter and the flow direction is more direct, which can improve the stability of airflow, which is beneficial to improving the heat exchange effect, and it is also less likely to generate turbulence and increase noise.

[0083] In addition, placing the air intake at the rear can avoid the impact of front air intake on noise and improve the overall appearance of the machine.

[0084] According to the embodiment of the present utility model, the air conditioner 100, by placing the fan component 3 in front of the heat exchange component 2, adopts suction-type heat exchange. The indoor air first passes through the heat exchange component 2 and then through the centrifugal impeller 31, which is conducive to improving the heat exchange efficiency and heat exchange uniformity of the airflow. Furthermore, by passing through the air inlet area 11a, the heat exchange component 2 and the centrifugal impeller 31 in sequence, the airflow path is shorter and the flow direction is more direct, resulting in strong airflow stability, which can further improve the heat exchange effect. The airflow is also less prone to turbulence, which is conducive to reducing noise.

[0085] In some embodiments of this utility model, such as Figure 5 As shown, the heat exchange component 2 is mounted on the rear box bottom plate 11. Therefore, the heat exchange component 2 is close to the air inlet area 11a, resulting in high air inlet efficiency. Mounting the heat exchange component 2 on the rear box bottom plate 11 reduces the front and rear space occupied compared to mounting the heat exchange component at the front of the housing 1 and spaced apart from the rear box bottom plate in the front-rear direction, which is beneficial to reducing the size of the air conditioner 100 in the front-rear direction.

[0086] For example, the heat exchange component 2 can be installed only on the rear box bottom plate 11 and not connected to other parts of the shell 1. In this way, compared with the related technology where the heat exchange component is installed on the left and right side plates of the shell, or the heat exchange component is connected to the rear box bottom plate and the left and right side plates of the shell respectively, the left and right side plates are not a whole piece, which introduces assembly errors and makes it difficult to meet the assembly accuracy requirements of the heat exchange component, resulting in assembly difficulties; while in some embodiments of this utility model, the heat exchange component 2 is only installed on the rear box bottom plate 11, which does not introduce assembly errors, the assembly accuracy is easy to ensure, and the assembly difficulty can be reduced.

[0087] Furthermore, the fact that the heat exchange component 2 is only installed on the rear box bottom plate 11 simplifies the assembly steps and improves assembly efficiency. For example, during assembly, the heat exchange component 2 can be installed on the rear box bottom plate 11 first, and then the whole formed by the rear box bottom plate 11 and the heat exchange component 2 can be installed with other components, thereby improving assembly efficiency.

[0088] In some embodiments of this utility model, such as Figures 6-8 As shown, the heat exchange component 2 and the rear box bottom plate 11 are positioned and engaged by the first positioning component 4. The first positioning component 4 is used to restrict the relative movement of the heat exchange component 2 relative to the rear box bottom plate 11 in the vertical and / or horizontal directions.

[0089] The positioning and engagement of the heat exchange component 2 and the rear box bottom plate 11 via the first positioning component 4 improves the accuracy of their engagement, enabling positioning before fixing and installation, thus enhancing the assembly accuracy of the heat exchange component 2 and the rear box bottom plate 11. Furthermore, the first positioning component 4 restricts the relative movement of the heat exchange component 2 relative to the rear box bottom plate 11 in the vertical and / or horizontal directions, resulting in strong stability of the heat exchange component 2 relative to the rear box bottom plate 11 and reducing the likelihood of relative swaying.

[0090] In some embodiments of this utility model, such as Figure 7 As shown, the heat exchange component 2 is positioned and engaged by a first positioning assembly 4 at its lower end, and first positioning assemblies 4 are provided on both the left and right sides; as shown Figure 8 As shown, the heat exchange component 2 is positioned and engaged by a first positioning component 4 at its upper end, and first positioning components 4 are provided on both the left and right sides. Thus, at least four corners of the heat exchange component 2 are positioned by the first positioning components 4, and the cooperation of multiple first positioning components 4 can restrict the relative movement of the heat exchange component 2 relative to the rear box bottom plate 11 in the vertical and horizontal directions.

[0091] In some embodiments of this utility model, such as Figure 7 As shown, the first positioning component 4 includes a positioning protrusion 41 and a positioning groove 42, with the positioning protrusion 41 extending into the positioning groove 42 for positioning engagement; wherein, as Figure 9As shown, the positioning protrusion 41 includes a first positioning protrusion 41a disposed on the heat exchange component 2 and protruding rearward, and the positioning groove 42 includes a first positioning groove 42a disposed on the rear box bottom plate 11 and positioned and engaged with the first positioning protrusion 41a; and / or, as Figures 7-10 As shown, the positioning protrusion 41 includes a second positioning protrusion 41b disposed on the rear box bottom plate 11 and protruding forward, and the positioning groove 42 includes a second positioning groove 42b disposed on the heat exchange component 2 and positioned and engaged with the second positioning protrusion 41b.

[0092] The first positioning component 4 includes a positioning protrusion 41 and a positioning groove 42. The positioning protrusion 41 extends into the positioning groove 42 to engage with it for positioning. The first positioning component 4 has a simple structure and convenient positioning, which facilitates the mutual positioning of the heat exchange component 2 and the rear box bottom plate 11, reducing operational difficulty and improving assembly efficiency. The positioning groove 42 can be a through groove or a blind groove, which can be selected according to actual needs.

[0093] The heat exchange component 2 is positioned relative to the rear box bottom plate 11 by a rearwardly protruding first positioning protrusion 41a engaging with a rearwardly recessed first positioning groove 42a on the rear box bottom plate 11; or, the rear box bottom plate 11 is provided with a forwardly protruding second positioning protrusion 41b, and the heat exchange component 2 is provided with a forwardly recessed second positioning groove 42b, the second positioning protrusion 41b extending into the second positioning groove 42b for positioning engagement, thereby positioning the heat exchange component 2 relative to the rear box bottom plate 11.

[0094] Alternatively, the heat exchange component 2 may have not only a rearwardly protruding first positioning protrusion 41a, but also a forward-recessed second positioning groove 42b. Similarly, the rear box bottom plate 11 may have not only a forward-protruding second positioning protrusion 41b, but also a rearwardly recessed first positioning groove 42a. The first positioning protrusion 41a extends into the first positioning groove 42a for positioning engagement, and the second positioning protrusion 41b extends into the second positioning groove 42b for positioning engagement. In this way, the heat exchange component 2 has a rearward insertion portion, and the rear box bottom plate 11 has a forward insertion portion, forming an interlocking positioning engagement, which can further improve the positioning stability of the heat exchange component 2 and the rear box bottom plate 11.

[0095] In some embodiments of this utility model, such as Figure 9As shown, a second positioning protrusion 41b protruding forward is provided on the rear box bottom plate 11. This forms a first positioning groove 42a that is recessed rearward relative to the second positioning protrusion 41b. Similarly, a first positioning protrusion 41a protruding rearward is provided on the heat exchange component 2, and a second positioning groove 42b that is recessed forward relative to the first positioning protrusion 41a is formed next to it. The first positioning protrusion 41a extends into the first positioning groove 42a for positioning and engagement, and the second positioning protrusion 41b extends into the second positioning groove 42b for positioning and engagement, forming an interlocking positioning engagement.

[0096] In some embodiments of this utility model, such as Figure 9 and Figure 10 As shown, the positioning protrusion 41 has a first connection hole 411 for connecting the heat exchange component 2 and the rear box bottom plate 11.

[0097] After the heat exchange component 2 is positioned and fitted with the rear box bottom plate 11, it is then fixed and installed by fasteners. The connection method of positioning first and then fixing can improve the assembly accuracy and is conducive to improving the assembly efficiency.

[0098] The positioning protrusion 41 has a first connecting hole 411, through which fasteners can pass to fix the heat exchange component 2 and the rear box bottom plate 11. By directly opening the first connecting hole 411 for connection on the positioning protrusion 41, the connection can be made directly after the positioning and fit are stable, thus improving assembly efficiency.

[0099] In some embodiments of this invention, precise positioning of the heat exchange component 2 and the rear box bottom plate 11 is achieved through positioning and mating, facilitating rapid connection of fasteners. Furthermore, robotic arms or similar devices can be used to automate the connection of fasteners, thereby improving production efficiency.

[0100] It is worth noting that the types of fasteners mentioned in this article are not limited, and can include screws, rivets, etc.

[0101] In some embodiments of this utility model, such as Figure 11 and Figure 12 As shown, the first positioning component 4 is located on the left and right sides of the air inlet area 11a. The heat exchange component 2 includes a heat exchanger 21 and a sealing plate 22. There are two sealing plates 22, which are respectively located on the left and right sides of the heat exchanger 21. The sealing plates 22 extend in the vertical direction. The heat exchange component 2 is positioned and engaged with the rear box bottom plate 11 through the sealing plates 22.

[0102] It is worth noting that the heat exchanger 21 mentioned in this article refers to a refrigerant heat exchanger, that is, a heat exchanger 21 that achieves heat exchange through the internal flow of refrigerant.

[0103] The first positioning component 4 is located on the left and right sides of the air inlet area 11a. The positioning and cooperation between the heat exchange component 2 and the rear box bottom plate 11 has little impact on the air inlet of the air inlet area 11a.

[0104] The heat exchange component 2 includes a heat exchanger 21 and a sealing plate 22. The heat exchanger 21 is the main functional component of the heat exchange component 2. When the airflow passes through the heat exchanger 21, heat exchange occurs, thereby allowing the airflow to regulate the indoor temperature. The heat exchanger 21 is located in front of the air inlet area 11a. After the airflow flows into the air inlet area 11a, it fully exchanges heat with the heat exchanger 21, which can improve the heat exchange efficiency.

[0105] Two sealing plates 22 are provided on the left and right sides of the heat exchanger 21. The sealing plates 22 are used to position and fit the heat exchanger 21 with the rear box bottom plate 11. Both the sealing plates 22 and the heat exchanger 21 extend in the vertical direction, which can improve the positioning stability of the heat exchange component 2 and the rear box bottom plate 11. In addition, the sealing plates 22 can also be used to assemble the heat exchanger 21 with the rear box bottom plate 11, which can improve the arrangement stability of the heat exchange component 2.

[0106] In addition, while the sealing plate 22 positions and fits the heat exchanger 21 with the rear box bottom plate 11, the sealing plate 22 also seals the left and right sides of the heat exchanger 21 with the rear box bottom plate 11, so that the airflow flowing in from the air inlet area 11a flows through the heat exchanger 21 for heat exchange, reducing the airflow from flowing out directly from the edge of the heat exchanger without heat exchange, which can improve the heat exchange efficiency of the air conditioner 100.

[0107] Optionally, the sealing plate 22 can be assembled and connected with the heat exchanger 21. The sealing plate 22 and the heat exchanger 21 are separately formed and then assembled and connected, which can reduce the manufacturing cost. Alternatively, the sealing plate 22 can also be integrally formed with the heat exchanger 21, which can improve the integrity of the heat exchange component 2 and improve the sealing effect of the sealing plate 22.

[0108] In some embodiments of this utility model, such as Figure 9 As shown, the first positioning component 4 includes a first positioning protrusion 41a disposed on the sealing plate 22 and protruding rearward, and a first positioning groove 42a disposed on the rear box bottom plate 11. The first positioning groove 42a is disposed corresponding to and accommodates the first positioning protrusion 41a, as shown. Figure 13 and Figure 14 As shown, the shape and distribution of the first positioning protrusions 41a on the two sealing plates 22 are different.

[0109] The sealing plate 22 is positioned and engaged with the first positioning protrusion 41a protruding backward and the first positioning groove 42a recessed backward on the bottom plate 11 of the rear box, thereby positioning the heat exchange component 2 relative to the bottom plate 11 of the rear box. The first positioning component 4 has a simple structure, convenient positioning and engagement, and reliable positioning.

[0110] The two sealing plates 22 are each provided with a first positioning protrusion 41a, which can improve the positioning stability of the heat exchange component 2. The shape and distribution of the first positioning protrusion 41a on the two sealing plates 22 are different. When the orientation of the heat exchanger 21 can be distinguished, it can prevent the sealing plates 22 on both sides from being installed backwards. When the orientation of the heat exchanger 21 is uncertain and the two sealing plates 22 are integrated with the heat exchanger 21, it can prevent the heat exchange component 2 from being installed upside down and backwards, thus improving the assembly accuracy.

[0111] In some embodiments of this utility model, such as Figure 8 , Figure 12 and Figure 13 As shown, the two sealing plates 22 are the first sealing plate 221 and the second sealing plate 222, respectively. The width L1 of the first sealing plate 221 in the left-right direction is greater than the width L2 of the second sealing plate 222 in the left-right direction. The first positioning protrusion 41a provided on the first sealing plate 221 is formed as an elongated protrusion extending in the up-down direction. The extension length L3 of the elongated protrusion is greater than half of the length L4 of the first sealing plate 221 in the up-down direction. The heat exchanger 21 is connected to a refrigerant inlet / outlet pipe 25 extending in the up-down direction on one side corresponding to the first sealing plate 221.

[0112] One side of the first sealing plate 221 is connected to the refrigerant inlet / outlet pipe 25. Therefore, the width L1 of the first sealing plate 221 in the left-right direction is designed to be greater than the width L2 of the second sealing plate 222 in the left-right direction. This can provide a larger sealing clearance space on the side where the refrigerant inlet / outlet pipe 25 is arranged, which is beneficial to the arrangement of the refrigerant inlet / outlet pipe 25.

[0113] The width L1 of the first sealing plate 221 in the left-right direction is greater than the width L2 of the second sealing plate 222 in the left-right direction. The size of the first positioning protrusion 41a on the first sealing plate 221 is increased. The extension length L3 of the first positioning protrusion 41a in the vertical direction is greater than half of the length L4 of the first sealing plate 221 in the vertical direction. This can improve the structural strength of the first sealing plate 221 and facilitate the sealing assembly of the first sealing plate 221 and the rear box bottom plate 11.

[0114] In some embodiments of this utility model, such as Figures 12-14 As shown, the sealing plate 22 has a second connecting hole 223 and a third connecting hole 224. Both the third connecting hole 224 and the second connecting hole 223 are multiple holes spaced apart in the vertical direction. The second connecting hole 223 is located on the side of the first positioning component 4 in the left-right direction closer to the heat exchanger 21 and is used for connecting the sealing plate 22 to the heat exchanger 21. The third connecting hole 224 is located on the side of the first positioning component 4 in the left-right direction away from the heat exchanger 21 and is used for connecting the sealing plate 22 to the rear box bottom plate 11.

[0115] Fasteners pass through the second connection hole 223 to connect the sealing plate 22 to the heat exchanger 21, and fasteners pass through the third connection hole 224 to connect the sealing plate 22 to the rear box bottom plate 11. This can improve the connection stability between the sealing plate 22 and the heat exchanger 21, and stably connect the heat exchange component 2 to the rear box bottom plate 11.

[0116] Therefore, the heat exchange component 2 is only installed on the rear box bottom plate 11 and is not connected to other parts of the shell 1, which will not introduce assembly errors, makes it easy to ensure assembly accuracy, and reduces assembly difficulty. Furthermore, during assembly, the heat exchange component 2 can be installed on the rear box bottom plate 11 first, and then the whole formed by the rear box bottom plate 11 and the heat exchange component 2 can be installed with other components, thereby improving assembly efficiency.

[0117] Of course, this is not the only option. The seal can also be integrally molded with the heat exchanger 21, which can improve the overall integrity of the heat exchange component 2 and enhance the sealing effect of the sealing plate 22. Furthermore, it can save the steps of assembling and connecting the seal with the heat exchanger 21, further improving assembly efficiency.

[0118] In some embodiments of this utility model, such as Figure 11 and Figure 16 As shown, the heat exchange component 2 includes a heat exchanger 21. Both the rear casing bottom plate 11 and the heat exchanger 21 are flat plates and are arranged parallel to each other. Therefore, the heat exchanger 21 occupies less space inside the casing 1, which is beneficial for the miniaturization of the entire machine.

[0119] Heat exchanger 21 is the main functional component of heat exchange component 2. When airflow passes through heat exchanger 21, heat exchange occurs, thereby allowing the airflow to regulate the indoor temperature.

[0120] In related technologies, the heat exchanger is at a certain angle to the rear box bottom plate and the airflow direction. Indoor air passes through the heat exchanger at this angle, resulting in poor heat exchange efficiency and increased turbulence, which also increases indoor unit noise. However, in some embodiments of this invention, by assembling the heat exchanger 21 parallel to the rear box bottom plate 11, the indoor air passes perpendicularly through the heat exchanger 21, resulting in higher heat exchange efficiency. Since the indoor air passes through the heat exchanger 21 in a turbulent state, indoor unit noise is reduced. Furthermore, the air conditioner 100 is assembled horizontally, making it more suitable for robotic arm production and fixing, resulting in high production efficiency and low cost.

[0121] In some embodiments of this utility model, such as Figure 6As shown, the heat exchange component 2 also includes a sealing plate 22. There are two sealing plates 22, which are respectively connected to the left and right sides of the heat exchanger 21. The sealing plates 22 extend in the vertical direction. The heat exchange component 2 is assembled and connected to the rear box bottom plate 11 through the sealing plates 22. The heat exchanger 21 and the sealing plates 22 on both sides form a heat exchange assembly 2a. In the projection plane parallel to the rear box bottom plate 11, the orthographic projection of the heat exchange assembly 2a falls completely within the orthographic projection range of the rear box bottom plate 11. The width L5 of the heat exchange assembly 2a in the left and right direction is greater than 80% of the width L6 of the rear box bottom plate 11 in the left and right direction. The width L7 of the heat exchanger 21 in the left and right direction is greater than 80% of the width L5 of the heat exchange assembly 2a in the left and right direction.

[0122] Among them, there are two sealing plates 22 and they are arranged on the left and right sides of the heat exchanger 21. The sealing plates 22 are used to assemble and connect the heat exchanger 21 with the rear box bottom plate 11. The sealing plates 22 extend in the vertical direction, which can increase the connection area with the heat exchanger 21 and the rear box bottom plate 11, and improve the assembly stability of the heat exchanger 21 and the rear box bottom plate 11.

[0123] In addition, the sealing plate 22 also seals the left and right sides of the heat exchanger 21 with the bottom plate 11 of the rear box, so that the airflow flowing in from the air inlet area 11a flows through the heat exchanger 21 for heat exchange, reducing the airflow from flowing out directly from the edge of the heat exchanger 21 without heat exchange, which can improve the heat exchange efficiency of the air conditioner 100.

[0124] The heat exchanger 21 and the sealing plates 22 on both sides form a heat exchange assembly 2a. The orthographic projection of the heat exchange assembly 2a falls entirely within the orthographic projection range of the rear box bottom plate 11. The width of the heat exchange assembly 2a in the left-right direction is smaller than the width of the rear box bottom plate 11 in the left-right direction, which can reduce the assembly interference of the rear box bottom plate 11 in the left-right direction.

[0125] Furthermore, the width L5 of the heat exchange component 2a in the left-right direction is greater than 80% of the width L6 of the rear box bottom plate 11 in the left-right direction. Maximizing the size of the heat exchange component 2a in the left-right direction increases the heat exchange area, which is beneficial for improving heat exchange efficiency. The width L7 of the heat exchanger 21 in the left-right direction is greater than 80% of the width L5 of the heat exchange component 2a in the left-right direction. The heat exchanger 21 has a larger heat exchange area, which is beneficial for improving heat exchange efficiency.

[0126] In some embodiments of this utility model, such as Figure 6 As shown, the heat exchange component 2 includes a heat exchanger 21 and an electric auxiliary heater 23. The electric auxiliary heater 23 is located in front of the heat exchanger 21. In the projection plane parallel to the bottom plate 11 of the rear box, the front projection area of ​​the electric auxiliary heater 23 is smaller than the front projection area of ​​the heat exchanger 21.

[0127] The heat exchange component 2 includes a heat exchanger 21, which can both cool and heat. After exchanging heat with the heat exchanger 21, the airflow flows into the room to regulate the indoor temperature.

[0128] The electric auxiliary heater 23 uses electrical energy to heat the airflow. The electric auxiliary heater 23 is located in front of the heat exchanger 21, and the airflow passing through the heat exchanger 21 is then heated by the electric auxiliary heater 23. The electric auxiliary heater 23 is designed to be small in size, thereby reducing the ventilation resistance of the heat exchanger 21.

[0129] In some embodiments of this utility model, such as Figures 17-19 As shown, the length direction of the electric auxiliary heater 23 is left and right. The left and right ends of the electric auxiliary heater 23 are provided with mounting structures 24 at positions that extend beyond the left and right edges of the heat exchanger 21. The electric auxiliary heater 23 is mounted on the heat exchanger 21 and / or the bottom plate 11 of the rear box through the mounting structures 24.

[0130] It is worth noting that the left and right edges of heat exchanger 21 refer to the edges of the side plates of heat exchanger 21, not the edges of the sealing plates 22 connected to the left and right sides of heat exchanger 21.

[0131] The electric auxiliary heating 23 is provided with mounting structures 24 at its left and right ends, extending beyond the left and right edges of the heat exchanger 21. The position of the mounting structures 24 can reduce obstruction to airflow, reduce airflow resistance, improve airflow flow, and improve airflow heat exchange efficiency.

[0132] The electric auxiliary heater 23 can be installed on the heat exchanger 21 or on the rear box bottom plate 11, which can improve the installation stability of the electric auxiliary heater 23. Alternatively, the electric auxiliary heater 23, the heat exchanger 21 and the rear box bottom plate 11 can be fixedly connected by fasteners through three fasteners, which can save fasteners, reduce manufacturing costs and improve assembly efficiency.

[0133] In some embodiments of this utility model, such as Figure 17 and Figure 18 As shown, the electric auxiliary heater 23 includes a heating body 231, a support base 232, a cover plate 233, and a first wire 234. There are two support bases 232, which are respectively installed on the left and right sides of the heating body 231. The support base 232 has a protrusion 2321 extending towards the rear. The mounting structure 24 is provided on the protrusion 2321. The cover plate 233 is detachably installed on the front side of one of the support bases 232 and is used to cover the connection part between the first wire 234 and the heating body 231.

[0134] The heating body 231 is used to heat the airflow. The support 232 supports the heating body 231 on the heat exchanger 21 and / or the rear box bottom plate 11, which improves the installation stability of the support 232. In addition, the support 232 can also separate the heating body 231 from the heat exchanger 21 in the front-back direction, thereby reducing the airflow resistance and facilitating the airflow through the heat exchanger 21 and the heating body 231.

[0135] The support base 232 has a rearwardly extending protrusion 2321, which supports the heat exchanger 21 and / or the rear box bottom plate 11. A mounting structure 24 is provided on the protrusion 2321, and the electric auxiliary heater 23 is mounted on the heat exchanger 21 and / or the rear box bottom plate 11 via the mounting structure 24. By providing the mounting structure 24 on the protrusion 2321, the distance between the mounting structure 24 and the heat exchanger 21 and / or the rear box bottom plate 11 can be shortened, facilitating the installation of the mounting structure 24.

[0136] The cover plate 233 is detachably installed on the front side of one of the support seats 232 and is used to cover the connection part between the first wire 234 and the heating body 231. The cover plate 233 can protect the connection part between the first wire 234 and the heating body 231, prevent water and dust from entering, and improve reliability and safety.

[0137] In some embodiments of this utility model, such as Figure 18 and Figure 19 As shown, the mounting structure 24 is constructed as a fixed column extending towards the rear, and the mounting structure 24 is fixedly connected to the side plate of the heat exchanger 21.

[0138] In some embodiments of this utility model, such as Figure 19 As shown, the centrifugal fan 31 is positioned opposite the electric auxiliary heater 23, and is also positioned opposite the center of the heat exchanger 21 in the vertical direction.

[0139] The centrifugal fan 31 and the electric auxiliary heater 23 are positioned opposite each other, driving the airflow to flow directly towards the electric auxiliary heater 23, which can improve the heat exchange efficiency between the airflow and the electric auxiliary heater 23.

[0140] Furthermore, the centrifugal impeller 31 and the heat exchanger 21 are positioned opposite each other in the vertical direction, resulting in a larger contact area between the airflow and the heat exchanger 21, which can improve the heat exchange efficiency between the airflow and the heat exchanger 21.

[0141] Not limited to this, multiple centrifugal fans 31 can also be set up, and the multiple centrifugal fans 31 can be arranged in the vertical direction to improve the air intake efficiency of the air conditioner 100.

[0142] In some embodiments of this utility model, such as Figure 12 As shown, the air conditioner 100 also includes a water tray 6, which is located below the heat exchange component 2 and is mounted on the rear panel 11.

[0143] The drip tray 6 is used to collect the condensate generated on the heat exchange component 2, which can reduce the natural dripping of the condensate on the heat exchange component 2 onto the ground, and also reduce the splashing of the condensate on the heat exchange component 2 inside the casing 1, which can affect other components, thereby improving the working stability of the air conditioner 100.

[0144] The drip tray 6 is mounted on the rear floor plate 11, which reduces the burden on the heat exchange component 2 and improves the working stability of the heat exchange component 2. In some embodiments of this utility model, the drip tray 6 is mounted on the rear floor plate 11, and the heat exchange component 2 is also mounted on the rear floor plate 11. In this way, by using the rear floor plate 11 as a reference, the drip tray 6 and the heat exchange component 2 are respectively mounted on the rear floor plate 11, which can improve the assembly accuracy between the drip tray 6 and the heat exchange component 2. Furthermore, since the drip tray 6 and the heat exchange component 2 are both mounted on the rear floor plate 11, forming a whole, and then assembled with other structures of the air conditioner 100, the assembly efficiency can be improved.

[0145] Of course, it is not limited to this. The water receiving tray 6 can be connected to both the rear box bottom plate 11 and the heat exchange component 2, which can improve the structural stability.

[0146] In some embodiments of this utility model, such as Figure 12 As shown, the left and right ends of the water receiving tray 6 are respectively positioned and engaged with the rear box bottom plate 11 by the second positioning component 5. The second positioning component 5 is used to restrict the relative movement of the water receiving tray 6 relative to the rear box bottom plate 11 in the vertical and / or horizontal directions.

[0147] The positioning and engagement of the drip tray 6 and the rear compartment floor plate 11 via the second positioning component 5 improves the accuracy of their fit, enabling positioning before fixing and thus enhancing assembly accuracy. Furthermore, the second positioning component 5 restricts the relative movement of the drip tray 6 to the rear compartment floor plate 11 in the vertical and / or horizontal directions. This ensures strong stability of the drip tray 6 relative to the rear compartment floor plate 11, reducing the likelihood of relative wobbling and minimizing the spillage of condensate collected in the drip tray 6.

[0148] In some embodiments of this utility model, such as Figure 12 and Figure 20 As shown, the upper part of the water receiving tray 6 is provided with an overflow port 61.

[0149] The water receiving tray 6 is equipped with an overflow port 61, which can direct the water in the water receiving tray 6 to flow out along the overflow port 61 when the water receiving tray 6 cannot drain normally or when there is too much water, thereby reducing the situation where the water in the water receiving tray 6 flows out of the water receiving tray 6 indiscriminately.

[0150] In some embodiments of this utility model, such as Figure 20 , Figure 21 and Figure 22 As shown, the water receiving tray 6 has an inner wire harness structure 62 inside and an outer wire harness structure 63 outside. The inner wire harness structure 62 is lower than the highest water level of the water receiving tray 6. Figure 6As shown, the heat exchange component 2 includes a heat exchanger 21 and an electric auxiliary heater 23. The electric auxiliary heater 23 is located in front of the heat exchanger 21. The electric auxiliary heater 23 is connected to a first wire 234. The first wire 234 extends downward from the electric auxiliary heater 23 into the water receiving pan 6 and is constrained by the inner wire harness structure 62. Then it extends upward from the top wall of the water receiving pan 6, crosses over to the outside of the water receiving pan 6, extends downward, and is constrained by the outer wire harness structure 63.

[0151] The water receiving tray 6 is equipped with an inner wire harness structure 62 and an outer wire harness structure 63. The first wire 234 of the electric auxiliary heater 23 is constrained by the inner wire harness structure 62 and the outer wire harness structure 63, which can improve the neatness of the wiring, reduce the impact on the first wire 234 and cause it to shake inside the housing 1, and improve the working reliability of the electric auxiliary heater 23.

[0152] By utilizing the existing water tray 6 to set up the inner wire harness structure 62 and the outer wire harness structure 63 to limit the first wire 234, it is not necessary to set up an additional wire harness structure, thereby reducing manufacturing costs, simplifying the structure, reducing the space occupied inside the housing 1, and reducing the volume of the air conditioner 100.

[0153] The inner wire structure 62 is located inside the water receiving tray 6. The first wire 234 extends downward from the electric auxiliary heater 23 into the water receiving tray 6, and then extends upward over the top wall of the water receiving tray 6 to the outside. In this way, the first wire 234 acts as a bridge, allowing the condensate generated on the electric auxiliary heater 23 to flow steadily into the water receiving tray 6 along the first wire 234, reducing the possibility of condensate dripping out of the water receiving tray 6 or splashing. Furthermore, the first wire 234 then extends upward over the top wall of the water receiving tray 6 from inside the water receiving tray 6, forming a backflow bend that prevents water droplets from flowing out of the water receiving tray 6 along the first wire 234.

[0154] In some embodiments of this utility model, the upper part of the water receiving tray 6 is provided with an overflow port 61, and the water receiving tray 6 has an inner wire structure 62 and an outer wire structure 63.

[0155] The inner wire structure 62 is located inside the water receiving pan 6, and is lower than the highest water level of the water receiving pan 6, thus stably introducing the condensate generated on the electric auxiliary heater 23 into the water receiving pan 6. By providing an overflow port 61 at the top of the water receiving pan 6, condensate flows out from the overflow port 61 when the water level in the water receiving pan 6 does not reach the inner wire structure 62, thereby reducing the likelihood of the first wire 234 being immersed in condensate and extending its service life.

[0156] In some embodiments of this utility model, the rear box bottom plate 11 is an integrally formed part and has multiple ventilation holes in the air inlet area 11a, and the housing 1 takes in air through the multiple ventilation holes in the air inlet area 11a.

[0157] Alternatively, in some embodiments of this utility model, such as Figure 11 and Figure 16 As shown, the housing 1 also includes an air intake grille 12, which is installed on the rear box bottom plate 11 and is disposed opposite to the air intake area 11a. At this time, the air intake area 11a can be a whole opening or include multiple small openings (for example, each sub-area 11a1 described below is a small opening). The housing 1 takes in air through the air intake area 11a and the air intake grille 12.

[0158] For example, at least a portion of the air intake grille 12 protrudes from the rear side of the rear box floor 11, and the air intake grille 12 defines a receiving cavity 121 that opens to the front side for receiving the air intake filter 8.

[0159] The air inlet grille 12 is positioned relative to the air inlet area 11a. An air inlet filter 8 is installed inside the air inlet grille 12. By setting the air inlet grille 12 and the air inlet filter 8, the incoming air can be filtered, reducing the amount of dust and other pollutants entering the housing 1. This can improve the working stability of the heat exchange component 2 and the fan component 3, and improve the air output quality of the air conditioner 100.

[0160] The air intake grille 12 protrudes at least partially from the rear side of the rear box bottom plate 11. The rearward protrusion of the air intake grille 12 defines the receiving cavity 121, which can reduce the space occupied in the housing 1 and reduce interference with the heat exchange components 2 in the housing 1.

[0161] In some embodiments of this utility model, such as Figure 5 , Figure 11 , Figure 16 and Figure 24 As shown, the air intake grille 12 is detachably mounted on the rear box bottom plate 11 from the rear side. The edge of the air intake grille 12 overlaps the rear surface of the rear box bottom plate 11 and is detachably connected to the rear box bottom plate 11. The rear box bottom plate 11 is provided with ribs 111 in the air intake area 11a. There are multiple ribs 111, which divide the air intake area 11a into multiple sub-areas 11a1. The air intake filter 8 is located on the rear side of the ribs 111, and the heat exchange component 2 is located on the front side of the ribs 111.

[0162] The air intake grille 12 can be removed from the rear side of the rear box bottom plate 11. The air intake grille 12 and the air intake filter 8 can be removed and replaced without removing the housing 1, which is convenient for operation.

[0163] The rear box floor plate 11 has ribs 111 at the air intake area 11a, which can improve the structural stability of the rear box floor plate 11 at the air intake area 11a, reduce the shaking of the rear box floor plate 11 under the impact of airflow, and thus reduce airflow noise.

[0164] The air inlet filter 8 is located on the rear side of the rib 111, and the heat exchanger 21 is located on the front side of the rib 111. The rib 111 and the air inlet grille 12 can together limit the air inlet filter 8, and the rib 111 can separate the heat exchanger 21 from the outer shell 1 to prevent the air inlet filter 8 from sticking to the heat exchanger 21 and causing the heat exchanger 21 to have a large air resistance.

[0165] In some embodiments of this utility model, such as Figure 4 and Figure 25 As shown, the housing 1 also includes a left side plate 14 and a right side plate 15 connected to the left and right sides of the rear box bottom plate 11. The air conditioner 100 also includes a fan mounting plate 33, which is located on the front side of the centrifugal impeller 31. The fan component 3 also includes a drive motor 32 connected to the centrifugal impeller 31. The drive motor 32 is mounted on the fan mounting plate 33. The left and right ends of the fan mounting plate 33 are respectively mounted on the left side plate 14 and the right side plate 15.

[0166] Since the drive motor 32 is relatively heavy, the air conditioner 100 is equipped with a fan mounting plate 33. The drive motor 32 is mounted on the fan mounting plate 33. The left and right ends of the fan mounting plate 33 are respectively mounted on the left side plate 14 and the right side plate 15. The weight of the drive motor 32 is directly borne by the housing 1, which improves the installation stability of the drive motor 32.

[0167] The drive motor 32 is connected to the left side plate 14 and the right side plate 15 via the fan mounting plate 33, so that the weight of the drive motor 32 is not applied to the air duct component 7 described below. This reduces the stress on the air duct component 7, making it less prone to deformation and extending its service life. Because the stress on the air duct component 7 is reduced, the material of the air duct component 7 can be flexibly selected. For example, the air duct component 7 can be made of foam plastic, which is beneficial for heat preservation of the airflow passing through the air duct component.

[0168] Furthermore, the drive motor 32 is connected to the left side plate 14 and the right side plate 15 via the fan mounting plate 33. This installation method facilitates the production and assembly of the entire machine. The front panel of the housing 1 can be opened, and the fan mounting plate 33 can be removed from the front, making the later maintenance of the fan component 3 more convenient.

[0169] In some embodiments of this utility model, such as Figure 4 , Figure 23 and Figure 26 As shown, the air conditioner 100 also includes an air duct component 7, which is located inside the housing 1 and in front of the heat exchange component 2. The centrifugal impeller 31 is located inside the air duct component 7, and an air duct inlet 71 is formed behind the centrifugal impeller 31. The air duct component 7 is sealed to the rear box bottom plate 11 to form an air inlet cavity 7a on the rear side of the air duct component 7. The heat exchange component 2 is located in the air inlet cavity 7a, and the air duct 72 formed inside the air duct component 7 is connected to the air inlet cavity 7a through the air duct inlet 71.

[0170] The air conditioner 100 includes a duct component 7, in which a duct 72 is formed. A centrifugal impeller 31 is disposed in the duct component 7. The centrifugal impeller 31 draws in the airflow that has been heated by the heat exchange component 2 from the duct inlet 71, which can improve the stability of the airflow and reduce airflow turbulence, thereby improving the air outlet heat exchange efficiency of the air conditioner 100.

[0171] The air duct component 7 and the rear box bottom plate 11 are sealed together to form an air inlet cavity 7a. The heat exchange component 2 is located in the relatively sealed air inlet cavity 7a, which can reduce the overflow of the airflow through the heat exchange component 2 from the edge of the heat exchange component 2 and improve the stability of airflow.

[0172] In some embodiments of this utility model, the air duct component 7 is installed on the rear box bottom plate 11. The mounting points of the air duct component 7 and the rear box bottom plate 11 can be flexibly set, so that the air duct component 7 is reliably fixed.

[0173] In some embodiments of this utility model, the air duct component 7 is mounted on the rear box bottom plate 11, and the heat exchange component 2 is also mounted on the rear box bottom plate 11. This way, by using the rear box bottom plate 11 as a reference, the air duct component 7 and the heat exchange component 2 are respectively mounted on the rear box bottom plate 11, which improves the assembly accuracy between the air duct component 7 and the heat exchange component 2. Furthermore, the heat exchanger 21 does not need to be connected to the air duct component 7, which simplifies the assembly operation and improves assembly efficiency.

[0174] In some embodiments of this utility model, the air duct component 7 is made of thermal insulation material. The centrifugal fan 31 is disposed inside the air duct component 7, and the heat exchange component 2 is disposed inside the air inlet cavity 7a formed by the air duct component 7. The fact that the air duct component 7 is made of thermal insulation material can improve the thermal insulation of the air duct component 7, reduce the heat loss after the airflow exchanges heat with the heat exchange component 2, and help improve the air outlet heat exchange efficiency of the air conditioner 100.

[0175] Furthermore, by setting the air duct component 7 as an insulation material component, the air duct component 7 insulates the centrifugal impeller 31 and the heat exchange component 2 from the left side plate 14 and the right side plate 15. As a result, the left side plate 14, the right side plate 15, etc. do not need to adopt other insulation measures, thereby saving manufacturing costs.

[0176] When the air conditioner 100 includes the duct component 7, the fan mounting plate 33 can be located on the front side of the duct component 7, thereby facilitating the disassembly, assembly, and maintenance of the fan component 3.

[0177] In some embodiments of this utility model, such as Figure 25 and Figure 26 As shown, the air duct component 7 includes a separately machined upper volute 73 and a lower volute 74, which are then joined together. The separate molding of the upper volute 73 and the lower volute 74 followed by assembly reduces manufacturing difficulty and saves production costs.

[0178] Furthermore, when the air duct component 7 is set as an insulation material component, if the air duct component 7 includes separately machined upper volute 73 and lower volute 74, and the upper volute 73 and lower volute 74 are spliced ​​together, the processing difficulty of the air duct component 7 can be further reduced. When the air duct component 7 is foamed using a foaming mold, setting the air duct component 7 as a separate structure can reduce the size of the foaming mold, improve the foaming quality, and reduce processing costs.

[0179] Not limited to this, the air duct component 7 can also be a one-piece molded part, which can improve the integrity and sealing of the air duct component 7 and reduce the loss of airflow.

[0180] In some embodiments of this utility model, such as Figures 27-28 As shown, the upper and lower ends of the lower volute 74 are fixed to the rear box bottom plate 11, the upper end of the upper volute 73 is fixed to the rear box bottom plate 11, and the lower end of the upper volute 73 is spliced ​​to the upper end of the lower volute 74 through the stepped structure 76.

[0181] The lower volute 74 is fixed to the upper and lower ends of the rear box bottom plate 11, which improves the installation stability of the lower volute 74 and the rear box bottom plate 11. Furthermore, the fact that the lower volute 74 is only installed on the rear box bottom plate 11 simplifies the assembly process and improves assembly efficiency.

[0182] The upper end of the upper volute 73 is fixed to the rear box bottom plate 11, and the lower end of the upper volute 73 is spliced ​​with the upper end of the lower volute 74, which can improve the installation stability of the upper volute 73. Furthermore, the lower end of the upper volute 73 and the upper end of the lower volute 74 are spliced ​​through a stepped structure 76, which can reduce the gap between the upper volute 73 and the lower volute 74, improve the sealing performance, and reduce airflow loss at the connection between the upper volute 73 and the lower volute 74.

[0183] like Figure 28 and Figure 29 As shown, both the upper volute 73 and the lower volute 74 are provided with stepped structures 76. The upper volute 73 and the lower volute 74 overlap in the front-to-back direction and also overlap in the left-to-right direction through the stepped structures 76, which can improve the fit stability of the upper volute 73 and the lower volute 74, and reduce the gap between the upper volute 73 and the lower volute 74, thereby improving the sealing performance.

[0184] In some embodiments of this utility model, such as Figure 3 , Figure 25 and Figure 30 As shown, the air duct component 7 includes an air duct outlet section 7b extending upward from the centrifugal impeller 31, the air duct outlet section 7b defining an air duct outlet 75, and a sound-absorbing grille 9 provided inside the air duct outlet section 7b.

[0185] Centrifugal impeller 31 is disposed in air duct component 7. Air duct component 7 includes an air duct outlet section 7b extending upward from centrifugal impeller 31. Airflow from centrifugal impeller 31 flows through air duct outlet section 7b to air duct outlet 75. Air duct outlet 75 is connected to air outlet 11b. Then, airflow is sent out of air conditioner 100 from air outlet 11b.

[0186] like Figure 3 As shown in the figure, the dotted line with arrows indicates the airflow direction. The airflow flows forward from the bottom plate 11 of the rear box into the shell 1, passes through the heat exchanger 21 and then flows forward to the centrifugal impeller 31. Then, under the action of the centrifugal impeller 31, the airflow flows upward along the air outlet section 7b of the air duct until it flows out from the air outlet 75 of the air duct.

[0187] The air outlet section 7b of the air duct is equipped with a sound-absorbing grille 9, which can reduce the noise generated by the airflow, thereby reducing the air outlet noise of the air duct 75 and improving the air supply quality of the air conditioner 100.

[0188] In some embodiments of this utility model, such as Figure 30 As shown, the noise reduction grille 9 includes a noise reduction section 91 and a grille section 92. The grille section 92 extends rearward from the lower end of the air duct outlet 75. The noise reduction section 91 is located above the grille section 92 and forms a front-open noise reduction air duct 93 between the grille section 92 and the grille section 92.

[0189] A sound-absorbing duct 93, opening towards the front, is formed between the grille section 92 and the sound-absorbing section 91. The sound-absorbing duct 93 is connected to the duct outlet 75. When airflow passes through the sound-absorbing duct 93, it is silenced by the sound-absorbing section 91, thereby reducing the exhaust noise of the duct outlet 75 and improving the air supply quality of the air conditioner 100. For example, the sound-absorbing section 91 may be provided with sound-absorbing holes, sound-absorbing layers, or sound-absorbing materials.

[0190] The grille section 92 is located at the lower end of the silencing section 91, and it supports the silencing section 91, thereby improving the installation stability of the silencing grille 9. Furthermore, the grille section 92 extends rearward from the lower end of the air duct outlet 75, and is located below the silencing air duct 93. The grille section 92 forms a protective layer within the air duct outlet section 7b, preventing foreign objects from falling into the air duct outlet section 7b through the air duct outlet 75 and preventing foreign objects from contacting the centrifugal impeller 31, thus improving the operational stability of the air conditioner 100.

[0191] In some embodiments of this utility model, such as Figures 30-32 As shown, the silencing part 91 includes a guide part 911 and a side plate part 912. The side plate part 912 is located on the left and right sides of the guide part 911. The guide part 911 extends from the rear end of the grille part 92 toward the upper end of the air duct outlet 75. The lower end of the guide part 911 is rotatably connected to the rear end of the grille part 92. The lower ends of the side plate parts 912 on both sides are connected to the left and right ends of the grille part 92 respectively through a snap-fit ​​structure 93.

[0192] For example, the snap-fit ​​structure 93 may include a snap hole 931 and a snap fastener 932, with the snap fastener 932 extending into the snap hole 931 to form a snap-fit ​​engagement. One of the snap hole 931 and the snap fastener 932 may be located on the side plate portion 912, and the other may be located on the grille portion 92. Of course, this application is not limited to this; for example, the connection between the two may also be achieved through threaded fasteners, welding, or other methods.

[0193] The specific method by which the lower end of the guide 911 is rotatably connected to the rear end of the grille 92 is not limited. For example, it can be rotatably connected by a soft hinge (such as a thin plastic strip that forms an integral connection with the guide 911 and the grille 92), or rotatably connected by a rigid hinge formed by the insertion of a rotating shaft and a shaft hole.

[0194] The silencing section 91 includes a guide section 911 extending from bottom to front and upward. The guide section 911 defines a curved, forward-extending silencing duct, which can improve the airflow guiding effect and reduce the turbulence generated by the airflow impacting the guide section 911. The side plate section 912 is connected to the left and right sides of the guide section 911, which can improve the structural stability of the silencing section 91.

[0195] The lower rear end of the guide section 911 is rotatably connected to the rear end of the grille section 92. The grille section 92 can be rotated open relative to the guide section 911. Therefore, the grille section 92 and the guide section 911 can be pre-processed in an unfolded form, or manufactured separately and then assembled together via the snap-fit ​​structure 93. This reduces the manufacturing difficulty of the muffler section 91 and saves manufacturing costs. The lower ends of the side plates 912 on both sides are snap-fitted to the left and right ends of the grille section 92, respectively. This improves the structural stability of the muffler section 91 and reduces the shaking of the grille section 92 caused by airflow impact, thus helping to reduce airflow noise.

[0196] In some embodiments of this utility model, such as Figure 3 As shown, there is one centrifugal impeller 31, and the axis 31a of the centrifugal impeller 31 is lower than the height center plane M of the housing 1. The housing 1 includes a front panel 16, which is located in front of the fan. The upper part of the front panel 16 has an air outlet 11b, which is higher than the centrifugal impeller 31. The air conditioner 100 also includes a duct component 7, which is located inside the housing 1 and in front of the heat exchange component 2. The centrifugal impeller 31 is located inside the duct component 7. The duct component 7 includes an air outlet section 7b extending upward from the centrifugal impeller 31. The air outlet section 7b defines an air outlet 75, which is connected to the air outlet 11b.

[0197] The axis 31a of the centrifugal impeller 31 is lower than the height center plane M of the housing 1, resulting in a low center of gravity for the air conditioner 100 and improved stability of the air conditioner 100.

[0198] The housing 1 includes a front panel 16 located on the front side. The upper part of the front panel 16 has an air outlet 11b that is higher than the centrifugal impeller 31. The axis 31a of the centrifugal impeller 31 extends in the front-rear direction. Airflow is drawn in along the axial direction of the centrifugal impeller 31 and then sent out along the radial direction of the centrifugal impeller 31. The centrifugal impeller 31 throws the airflow upward.

[0199] Centrifugal impeller 31 is disposed in air duct component 7. Air duct component 7 includes an air duct outlet section 7b extending upward from centrifugal impeller 31. Airflow from centrifugal impeller 31 flows through air duct outlet section 7b to air duct outlet 75. Air duct outlet 75 is connected to air outlet 11b. Then, airflow is sent out of air conditioner 100 from air outlet 11b.

[0200] like Figure 3 As shown in the figure, the dotted line with arrows indicates the airflow direction. The airflow flows forward from the bottom plate 11 of the rear box into the shell 1, passes through the heat exchanger 21 and then flows forward to the centrifugal impeller 31. Then, under the action of the centrifugal impeller 31, the airflow flows upward along the air outlet section 7b of the air duct until it flows out from the air outlet 75 of the air duct.

[0201] Other components of the air conditioner according to the embodiments of the present invention, such as centrifugal fan and operation, are known to those skilled in the art and will not be described in detail here.

[0202] In the description of this utility model, it should be understood that the terms "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0203] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0204] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0205] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0206] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0207] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An air conditioner, characterized in that, include: The housing includes a rear box bottom plate with an air intake area. A heat exchange component is disposed inside the housing and located in front of the air inlet area; A fan component is disposed inside the housing and located in front of the heat exchange component. The fan component includes a centrifugal impeller with its axis extending in the front-to-back direction. The air inlet area, the heat exchange component, and the centrifugal impeller are arranged sequentially along the airflow direction.

2. The air conditioner according to claim 1, characterized in that, The heat exchange component is mounted on the bottom plate of the rear box.

3. The air conditioner according to claim 2, characterized in that, The heat exchange component and the rear box bottom plate are positioned and engaged by a first positioning component, which is used to restrict the relative movement of the heat exchange component relative to the rear box bottom plate in the vertical and / or horizontal directions.

4. The air conditioner according to claim 3, characterized in that, The first positioning component includes a positioning protrusion and a positioning groove. The positioning protrusion extends into the positioning groove for positioning and engagement. The positioning protrusion has a first connecting hole for connecting the heat exchange component and the rear box bottom plate.

5. The air conditioner according to claim 3, characterized in that, The first positioning component is located on the left and right sides of the air inlet area. The heat exchange component includes a heat exchanger and a sealing plate. There are two sealing plates, which are respectively located on the left and right sides of the heat exchanger. The sealing plates extend in the vertical direction. The heat exchange component is positioned and engaged with the bottom plate of the rear box through the sealing plates.

6. The air conditioner according to claim 5, characterized in that, The first positioning component includes a first positioning protrusion disposed on the sealing plate and protruding rearward, and a first positioning groove disposed on the bottom plate of the rear box. The first positioning groove is disposed corresponding to and accommodates the first positioning protrusion. The shape and distribution of the first positioning protrusions on the two sealing plates are different.

7. The air conditioner according to claim 6, characterized in that, The two sealing plates are a first sealing plate and a second sealing plate. The width of the first sealing plate in the left-right direction is greater than the width of the second sealing plate in the left-right direction. The first positioning protrusion on the first sealing plate is formed as an elongated protrusion extending in the up-down direction. The extension length of the elongated protrusion is greater than half the length of the first sealing plate in the up-down direction. The heat exchanger is connected to a refrigerant inlet / outlet pipe extending in the up-down direction on the side corresponding to the first sealing plate.

8. The air conditioner according to claim 5, characterized in that, The sealing plate has a second connecting hole and a third connecting hole. Both the third connecting hole and the second connecting hole are multiple holes spaced apart in the vertical direction. The second connecting hole is located on the side of the first positioning component in the horizontal direction closer to the heat exchanger and is used to connect the sealing plate to the heat exchanger. The third connecting hole is located on the side of the first positioning component in the horizontal direction away from the heat exchanger and is used to connect the sealing plate to the bottom plate of the rear box.

9. The air conditioner according to claim 1, characterized in that, The heat exchange component includes a heat exchanger, and both the rear box bottom plate and the heat exchanger are flat plates and are arranged in parallel.

10. The air conditioner according to claim 9, characterized in that, The heat exchange component includes a heat exchanger and an electric auxiliary heater. The electric auxiliary heater is located in front of the heat exchanger. In the projection plane parallel to the bottom plate of the rear box, the projected area of ​​the electric auxiliary heater is smaller than the projected area of ​​the heat exchanger.

11. The air conditioner according to claim 10, characterized in that, The electric auxiliary heater is oriented left-right along its length. At both ends of the electric auxiliary heater, mounting structures are provided beyond the left and right edges of the heat exchanger. The electric auxiliary heater is mounted on the heat exchanger and / or the bottom plate of the rear chamber via the mounting structures.

12. The air conditioner according to claim 11, characterized in that, The electric auxiliary heater includes a heating body, a support base, a cover plate, and a first wire. There are two support bases, which are respectively installed on the left and right sides of the heating body. Each support base has a protrusion extending towards the rear. The mounting structure is provided on the protrusion. The cover plate is detachably installed on the front side of one of the support bases and is used to cover the connection point between the first wire and the heating body.

13. The air conditioner according to claim 10, characterized in that, The centrifugal fan is positioned opposite the electric auxiliary heater, and is also positioned relative to the center of the heat exchanger in the vertical direction.

14. The air conditioner according to claim 1, characterized in that, The air conditioner also includes a water collection tray, which is located below the heat exchange component and is mounted on the bottom plate of the rear compartment.

15. The air conditioner according to claim 14, characterized in that, The left and right ends of the water receiving tray are respectively positioned and engaged with the rear box bottom plate by a second positioning component. The second positioning component is used to restrict the relative movement of the water receiving tray relative to the rear box bottom plate in the vertical and / or horizontal directions.

16. The air conditioner according to claim 14, characterized in that, The upper part of the water receiving tray is provided with an overflow port; and / or, the water receiving tray has an inner wire structure and an outer wire structure, the inner wire structure being lower than the highest water level of the water receiving tray, the heat exchange component including a heat exchanger and an electric auxiliary heater, the electric auxiliary heater being located in front of the heat exchanger, the electric auxiliary heater being connected to a first wire, the first wire extending downward from the electric auxiliary heater into the water receiving tray being constrained by the inner wire structure, then extending upward from the top wall of the water receiving tray over to the outside of the water receiving tray and extending downward being constrained by the outer wire structure.

17. The air conditioner according to claim 1, characterized in that, The housing also includes an air intake grille, which is mounted on the rear box bottom plate and disposed opposite to the air intake area. At least a portion of the air intake grille protrudes from the rear side of the rear box bottom plate and defines a receiving cavity that opens to the front, the receiving cavity being used to receive an air intake filter.

18. The air conditioner according to claim 17, characterized in that, The air intake grille is detachably mounted on the rear box bottom plate from the rear side. The edge of the air intake grille overlaps the rear surface of the rear box bottom plate and is detachably connected to the rear box bottom plate. The rear box bottom plate is provided with ribs in the air intake area. There are multiple ribs that divide the air intake area into multiple sub-areas. The air intake filter is located on the rear side of the ribs, and the heat exchange component is located on the front side of the ribs.

19. The air conditioner according to claim 1, characterized in that, The housing also includes a left side plate and a right side plate connected to the left and right sides of the rear box bottom plate. The air conditioner also includes a fan mounting plate, which is located on the front side of the centrifugal impeller. The fan component also includes a drive motor connected to the centrifugal impeller. The drive motor is mounted on the fan mounting plate. The left and right ends of the fan mounting plate are respectively mounted on the left side plate and the right side plate.

20. The air conditioner according to claim 1, characterized in that, The air conditioner also includes an air duct component, which is disposed inside the housing and in front of the heat exchange component. The centrifugal impeller is disposed inside the air duct component, and the air duct component forms an air duct inlet behind the centrifugal impeller. The air duct component is sealed to the bottom plate of the rear box to form an air inlet cavity on the rear side of the air duct component. The heat exchange component is disposed in the air inlet cavity, and the air duct formed inside the air duct component is connected to the air inlet cavity through the air duct inlet.

21. The air conditioner according to claim 20, characterized in that, The air duct component is an insulation material component, and the air duct component includes a separately processed upper volute and a lower volute, which are spliced ​​together.

22. The air conditioner according to claim 20, characterized in that, The air duct component includes an air duct outlet section extending upward from the centrifugal impeller, the air duct outlet section defining an air duct outlet, and a sound-absorbing grille provided within the air duct outlet section.

23. The air conditioner according to claim 22, characterized in that, The sound-absorbing grille includes a sound-absorbing part and a grille part. The grille part extends rearward from the lower end of the air duct outlet. The sound-absorbing part is located above the grille part and forms a front-open sound-absorbing air duct with the grille part.

24. The air conditioner according to claim 23, characterized in that, The silencing part includes a guide part and a side plate part. The side plate part is located on the left and right sides of the guide part. The guide part extends from the rear end of the grille part toward the front and upward to the upper end of the air duct outlet. The lower end of the guide part is rotatably connected to the rear end of the grille part. The lower ends of the side plate parts on both sides are connected to the left and right ends of the grille part respectively through a snap-fit ​​structure.

25. The air conditioner according to claim 1, characterized in that, The centrifugal impeller is a single impeller whose axis is lower than the height center plane of the housing. The housing includes a front panel located in front of the fan. The upper part of the front panel has an air outlet, which is higher than the centrifugal impeller. The air conditioner also includes a duct component located inside the housing and in front of the heat exchange component. The centrifugal impeller is located inside the duct component. The duct component includes an air outlet section extending upward from the centrifugal impeller, which defines an air outlet. The air outlet is connected to the air outlet.

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