Air conditioner

Abstract

The utility model discloses an air conditioner, air conditioner includes: casing, air duct component, fan component and heat exchange component, the casing includes rear box bottom plate, and air duct component is located in the casing, and forms the air inlet chamber between with rear box bottom plate, forms the air wheel chamber in air duct component, and the air wheel chamber is located at the front side of air inlet chamber, and the air duct import that communicates with air inlet chamber is set up in the rear side of air wheel chamber of air duct component, fan component includes the air wheel of being located in the air wheel chamber, heat exchange component includes the heat exchanger of being located in the air inlet chamber, and the air inlet area of rear box bottom plate has in the rear side of heat exchanger, wherein, heat exchange component still includes the water pan, and the water pan is located at the bottom of heat exchanger, and the air duct component includes the drainage flow channel of direct or indirect drainage to the water pan. Through setting up the drainage flow channel, the condensate of air duct component flows to the water pan through the drainage flow channel, can reduce the situation that the condensate on air duct component drops on the ground, and reduces the splashing situation of condensate in the casing, improves the working stability of air conditioner.

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 typically have a drip tray below the heat exchanger to collect condensate. However, the airflow inside the ductwork also produces condensate. In current technology, the drip tray cannot collect the condensate generated on the ductwork, leaving room for improvement. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, this invention provides an air conditioner whose drip tray can collect condensate generated on the air duct components, thereby improving the operational stability of the air conditioner.

[0004] An air conditioner according to an embodiment of the present invention includes: a housing, the housing including a rear panel bottom plate; an air duct component, the air duct component being disposed within the housing and forming an air inlet cavity between it and the rear panel bottom plate, the air duct component forming a fan cavity, the fan cavity being located at the front side of the air inlet cavity, and the air duct component having an air duct inlet communicating with the air inlet cavity at the rear side of the fan cavity; a fan component, the fan component including a fan wheel disposed within the fan cavity; a heat exchange component, the heat exchange component including a heat exchanger disposed within the air inlet cavity, the rear panel bottom plate having an air inlet area located at the rear side of the heat exchanger; wherein, the heat exchange component further includes a water receiving tray, the water receiving tray being disposed at the bottom of the heat exchanger, and the air duct component including a drain channel for directly or indirectly draining water to the water receiving tray.

[0005] According to the embodiment of the present invention, the air conditioner has a drainage channel formed in the air duct component, which allows the condensate from the air duct component to flow to the water collection tray. This reduces the occurrence of condensate dripping from the air duct component onto the ground and reduces the occurrence of condensate splashing inside the casing and affecting other components, thereby improving the working stability of the air conditioner.

[0006] In some embodiments, the impeller is a centrifugal impeller with its axis extending in the front-rear direction. An air outlet cavity is formed within the air duct component, and the air outlet cavity is located above the impeller cavity. The air duct component has an air duct outlet on the upper front side of the air outlet cavity, and the air duct outlet is higher than the heat exchanger. The drainage channel includes a first drainage channel that extends from the lower end of the air duct outlet to the top of the heat exchanger to guide the condensate formed at the air duct outlet to the top of the heat exchanger.

[0007] In some embodiments, the duct component includes a duct element and a noise-reducing grille, the duct element defining the air outlet cavity, the noise-reducing grille being disposed within the air outlet cavity and located behind the duct outlet, and the first drainage channel including a water trough disposed on the noise-reducing grille.

[0008] In some embodiments, the silencing grille includes a silencing portion and a grille portion. The grille portion extends rearward from the lower end of the air duct outlet. The silencing portion is disposed above the grille portion and forms a front-open silencing air duct with the grille portion. The water trough is formed on the grille portion and is open at the top. The water trough includes a water receiving trough located at the front end of the grille portion and extending in a left-right direction. The water trough also includes a water flow trough extending rearward from the water receiving trough to the rear end of the grille portion. The water flow trough extends downward at an angle from front to back.

[0009] In some embodiments, the noise-reducing grille forms an outlet at the rear end of the water trough, the duct component includes a water outlet element, and the first drainage channel includes a water outlet passage defined by the water outlet element, the water outlet passage extending from the water outlet to the top of the heat exchanger to guide the drainage from the water outlet to the top of the heat exchanger.

[0010] In some embodiments, the ductwork defines a groove located on the rear side outside the air outlet cavity and extending downward from the water outlet to above the heat exchanger, the water outlet being embedded in the groove; and / or, the upper end of the water outlet having a hook, the water outlet being hung on the ductwork via the hook.

[0011] 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 snap-fitted to the left and right ends of the grille portion, respectively.

[0012] In some embodiments, the impeller is a centrifugal impeller with its axis extending in a front-rear direction. The duct component includes an air guide ring surrounding the centrifugal impeller, the air guide ring defining the impeller cavity. The duct component also includes a motor mounting plate located in front of the air guide ring. The fan component includes a drive motor, the drive motor being mounted on the rear side of the motor mounting plate and connected to the impeller. The drainage channel includes a second drainage channel, the second drainage channel being used to guide the condensate formed in the air guide ring and / or the condensate formed on the motor mounting plate to the water receiving tray.

[0013] In some embodiments, the air duct component includes a first volute, the motor mounting plate is located on the front side of the first volute, the first volute includes a rear air duct plate and the air guide ring, the air inlet is formed on the rear side of the rear air duct plate, the air duct inlet is formed on the rear air duct plate, the air guide ring extends forward from the rear air duct plate and surrounds the air duct inlet, the water receiving tray is located behind the rear air duct plate and below the air guide ring, the second drainage channel includes a drainage channel and a drain outlet, the drainage channel is located below the air guide ring and penetrates the first volute in the front-rear direction, the drain outlet is formed at the bottom front end of the air guide ring, the drain outlet penetrates the air guide ring vertically and can drain water into the drainage channel, and the rear end of the drainage channel can drain water into the water receiving tray.

[0014] In some embodiments, a slot is formed on the first volute that is lower than the air guide ring and open to the front. The drainage channel communicates with the slot. The motor mounting plate includes a front plate and a bottom plate. The front plate is located on the front side of the first volute. The bottom plate extends rearward from the lower end of the front plate into the slot. The second drainage channel includes a drainage groove formed on the top of the bottom plate. The drainage groove is opposite to the slot and drains water into the drainage channel. The condensate formed on the motor mounting plate and the condensate discharged from the drain outlet can both enter the drainage channel through the drainage groove.

[0015] In some embodiments, the motor mounting plate includes a left plate and a right plate disposed on the left and right sides of the front plate and extending rearward. The bottom plate is connected between the lower ends of the left plate and the right plate and extends downward at an angle from front to back. The bottom plate has a left water-blocking rib and a right water-blocking rib spaced apart from left to right. The gap between the left water-blocking rib and the right water-blocking rib forms the drainage groove. The left water-blocking rib extends obliquely rearward from the left plate to the drainage groove, and the right water-blocking rib extends obliquely rearward from the right plate to the drainage groove. The drain outlet is located directly above the front of the left water-blocking rib, or directly above the front of the right water-blocking rib, or directly above the front of the drainage groove.

[0016] In some embodiments, the first volute further includes side air duct plates located on the left and right sides of the rear air duct plate and extending rearward relative to the rear air duct plate. Both the side air duct plates and the rear air duct plate are provided with water-retaining eaves. The water-retaining eaves are set higher than the water receiving tray, and their top edges at corresponding positions relative to the water receiving tray protrude horizontally toward the interior of the water receiving tray to cover the gap between the top edge of the water receiving tray and the first volute. The water-retaining eaves provided on the rear air duct plate are rear water-retaining eaves, and the drainage channel is higher than the rear water-retaining eaves to drain water to the water receiving tray through the rear water-retaining eaves.

[0017] In some embodiments, the front wall of the water receiving tray is located below the rear baffle. The inner side of the front wall of the water receiving tray has an inner wire structure, and the outer side of the front wall of the water receiving tray has an outer wire structure. The inner wire structure is lower than the highest water level of the water receiving tray. The heat exchange component also includes an electric auxiliary heater, which is located in front of the heat exchanger. The electric auxiliary heater is connected to a first wire. The first wire extends downward from the electric auxiliary heater into the water receiving tray and is constrained by the inner wire structure. Then it extends upward from the top of the front wall of the water receiving tray, crosses over to the outer side of the front wall of the water receiving tray, and extends downward and is constrained by the outer wire structure.

[0018] In some embodiments, the rear chamber bottom plate and the heat exchanger are both flat plates and are arranged in parallel. The heat exchanger is provided with sealing plates on the left and right sides. The heat exchanger is installed on the rear chamber bottom plate through the sealing plates. The water receiving tray is also installed on the rear chamber bottom plate, and the upper end of the rear plate of the water receiving tray extends to the rear of the lower end of the heat exchanger.

[0019] In some embodiments, the air duct component includes an air duct element, an air inlet cavity is formed between the air duct element and the rear box bottom plate, the impeller is a centrifugal impeller with its axis extending in the front-rear direction, the air duct element includes an air guide ring surrounding the centrifugal impeller, the air guide ring defines the impeller cavity, an air outlet cavity communicating with the impeller cavity is formed inside the air duct element, and an air duct outlet communicating with the air outlet cavity is opened on the air duct element, wherein the air duct element includes a first volute and a second volute that are processed separately, the air guide ring is integrally formed with the first volute, the air duct outlet is opened on the second volute, the first volute and the second volute are spliced ​​by a stepped structure, and the air duct element is a thermal insulation material component.

[0020] 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

[0021] Figure 1 This is a cross-sectional view of an air conditioner according to an embodiment of the present invention; Figure 2 This is a partial structural drawing of an air conditioner according to an embodiment of the present invention; Figure 3 It is based on Figure 2 The example shown is a cross-sectional view of section AA. Figure 4 This is a partial structural schematic diagram of an air conditioner according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of a sound-absorbing grille according to an embodiment of the present invention; Figure 6It is based on Figure 3 A magnified view of region B in the example shown; Figure 7 This is an exploded view of a portion of the structure of an air conditioner according to an embodiment of the present invention; Figure 8 This is another structural schematic diagram of a sound-absorbing grille according to one embodiment of the present utility model; Figure 9 It is based on Figure 7 A magnified view of region C in the example shown; Figure 10 This is a schematic diagram of the structure of a first volute according to an embodiment of the present invention; Figure 11 This is another structural schematic diagram of the first volute according to one embodiment of the present invention; Figure 12 It is based on Figure 11 The example shown is a DD cross-sectional view; Figure 13 This is another structural schematic diagram of an air conditioner according to one embodiment of the present invention; Figure 14 It is based on Figure 13 The example shown is a cross-sectional view of the EE. Figure 15 This is a schematic diagram of the structure of a fan component and a motor mounting plate according to an embodiment of the present utility model; Figure 16 This is a schematic diagram of the structure of the first volute and the water receiving tray according to an embodiment of the present invention; Figure 17 This is another structural schematic diagram of the first volute and water receiving tray according to one embodiment of the present utility model; Figure 18 It is based on Figure 14 A magnified view of region F in the example shown; Figure 19 This is a structural schematic diagram of a heat exchange component and a rear box bottom plate according to an embodiment of the present utility model; Figure 20 This is a structural schematic diagram of the air duct component and the rear box bottom plate according to an embodiment of the present utility model; Figure 21 It is based on Figure 20 The example shown is a GG cross-sectional view.

[0022] Figure label: Air conditioner 100; Housing 1; Rear box bottom plate 11; Air intake area 11a; Air intake grille 12; 2. Air duct component; 2a. Air inlet chamber; 2b. Air impeller chamber; 2c. Air outlet chamber; 21. Air duct inlet; 22. Air duct outlet; Drainage channel 23; First drainage channel 231; water tank 2311; water receiving tank 23111; water flowing tank 23112; Second drainage channel 232; drainage channel 2321; drainage outlet 2322; drainage trough 2323; Air duct component 24; groove 24a; stepped structure 24b; First volute 241; rear air duct plate 2411; air guide ring 2412; slot 241a; side air duct plate 2413; water baffle 241b; rear water baffle 241b1; outlet 241c; Second volute 242; Silencing grille 25; Silencing section 251; Guide section 2511; Side plate section 2512; Buckle structure 2513; Buckle hole 25131; Buckle 25132; Grille section 252; Outlet 253; Silencing duct 254; Water outlet component 26; water outlet channel 261; hook 262; Motor mounting plate 27; front plate 271; bottom plate 272; left water baffle 2721; right water baffle 2722; left plate 273; right plate 274; Fan component 3; impeller 31; centrifugal impeller 311; shaft 311a of the centrifugal impeller; drive motor 32; Heat exchange component 4; heat exchanger 41; sealing plate 411; water receiving tray 42; inner wire bundle structure 421; outer wire bundle structure 422; electric auxiliary heating 43; first wire 431. Detailed Implementation

[0023] 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.

[0024] 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.

[0025] The air conditioner 100 of this utility model is described below with reference to the accompanying drawings.

[0026] According to the embodiment of the present utility model, the air conditioner 100, such as Figures 1-3 As shown, the air conditioner 100 includes: a housing 1, an air duct component 2, a fan component 3, and a heat exchange component 4. The housing 1 includes a rear box bottom plate 11. The air duct component 2 is disposed inside the housing 1 and forms an air inlet cavity 2a between it and the rear box bottom plate 11. A fan wheel cavity 2b is formed inside the air duct component 2. The fan wheel cavity 2b is located in front of the air inlet cavity 2a. The air duct component 2 has an air duct inlet 21 connected to the air inlet cavity 2a on the rear side of the fan wheel cavity 2b. The fan component 3 includes a fan wheel 31 disposed inside the fan wheel cavity 2b. The heat exchange component 4 includes a heat exchanger 41 disposed inside the air inlet cavity 2a. The rear box bottom plate 11 has an air inlet area 11a located behind the heat exchanger 41. The heat exchange component 4 also includes a water receiving tray 42, which is disposed at the bottom of the heat exchanger 41. The air duct component 2 includes a drain channel 23 that drains water directly or indirectly to the water receiving tray 42.

[0027] The housing 1 is the outer contour of the air conditioner 100. The housing 1 includes a rear panel 11 located at the rear, and the rear panel 11 has an air intake area 11a, through which the air conditioner 100 can draw air. By placing the air intake area 11a at the rear of the air conditioner 100, the front of the air conditioner 100 is closer to the user, thus reducing air intake noise compared to frontal air intake, and also making the front of the air conditioner 100 more integrated.

[0028] The air duct component 2 is installed inside the housing 1. An air inlet cavity 2a is formed between the rear side of the air duct component 2 and the rear box bottom plate 11. A fan wheel cavity 2b is formed on the inner side of the air duct component 2. The fan wheel cavity 2b is located in front of the air inlet cavity 2a. The fan wheel cavity 2b and the air inlet cavity 2a are connected by the air duct inlet 21.

[0029] The impeller 31 of the fan component 3 is disposed in the air duct cavity of the air duct component 2, and the heat exchanger 41 of the heat exchange component 4 is disposed in the air inlet cavity 2a. The heat exchanger 41 is used to exchange heat with the flowing air. The impeller 31 is used to draw air from the outside of the air conditioner 100 from the air inlet area 11a into the housing 1. After flowing in from the air inlet area 11a, the air first enters the air inlet cavity 2a, then flows from the air inlet cavity 2a into the impeller cavity 2b, and finally flows out of the air conditioner 100 under the drive of the impeller 31. Figure 1 The arrow with a dashed line indicates the direction of airflow.

[0030] By placing the impeller 31 in front of the heat exchanger 41, the air conditioner 100 of this embodiment adopts suction-type heat exchange. That is, the indoor air passes through the heat exchanger 41 first and then through the impeller 31, which improves both heat exchange efficiency and heat exchange uniformity, and reduces the likelihood of turbulence and increased noise. Furthermore, by placing the heat exchanger 41 close to the air inlet area 11a, the air outlet of the air conditioner 100 is farther from the heat exchanger 41, reducing the likelihood of turbulence at the air outlet and thus helping to reduce airflow noise.

[0031] The configuration of the air intake area 11a is not limited. For example, the rear box bottom plate 11 is a one-piece molded part and has multiple ventilation holes in the air intake area 11a, through which the housing 1 takes in air. Alternatively, for example, 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. In this case, the air intake area 11a can be a single opening or include multiple small openings, through which the housing 1 takes in air.

[0032] The heat exchanger 41 also includes a water receiving tray 42, which is located at the bottom of the heat exchanger 41. The water receiving tray 42 can be used to collect the condensate generated on the heat exchanger 41, which can reduce the situation where the condensate on the heat exchanger 41 drips onto the ground naturally, and also reduce the situation where the condensate on the heat exchanger 41 splashes inside the casing 1 and affects other components, thereby improving the working stability of the air conditioner 100.

[0033] It is understandable that after the airflow passes through the heat exchanger 41 for heat exchange, it flows to the impeller cavity 2b of the air duct component 2. Therefore, the air duct component 2 has a part of its structure located downstream of the heat exchanger 41. There is a temperature difference between the airflow after heat exchange and the air duct component 2, and condensate will also be generated on the air duct component 2.

[0034] Therefore, the air duct component 2 of this utility model embodiment has a drainage channel 23, which can drain water to the water collection tray 42. In this way, the condensate of the air duct component 2 can flow to the water collection tray 42 through the drainage channel 23, thereby reducing the situation where the condensate on the air duct component 2 drips onto the ground, and reducing the situation where the condensate on the air duct component 2 splashes inside the housing 1 and affects other components, thus improving the working stability of the air conditioner 100.

[0035] The drainage channel 23 can drain water directly or indirectly into the water receiving pan 42. Specifically, if the drainage channel 23 drains water directly into the water receiving pan 42, the drainage channel 23 may extend into the water receiving pan 42. Alternatively, if the drainage channel 23 drains water directly into the water receiving pan 42, the water from the drainage channel 23 may flow directly into the water receiving pan 42 under the action of gravity, and the condensate may flow from the drainage channel 23 into the water receiving pan 42 without passing through other structures. If the drainage channel 23 drains water indirectly into the water receiving pan 42, the water from the drainage channel 23 may pass through other structures before flowing into the drainage pan.

[0036] According to the embodiment of the present invention, the air conditioner 100 has a drainage channel 23 formed in the air duct component 2, which allows the condensate from the air duct component 2 to flow to the water receiving tray 42. This reduces the occurrence of condensate dripping from the air duct component 2 onto the ground and reduces the occurrence of condensate splashing from the air duct component 2 into the housing 1 and affecting other components, thereby improving the working stability of the air conditioner 100.

[0037] In some embodiments of this utility model, such as Figure 1 and Figure 3 As shown, the impeller 31 is a centrifugal impeller 311 with its axis 311a extending in the front-back direction. An air outlet cavity 2c is formed inside the air duct component 2. The air outlet cavity 2c is located above the impeller cavity 2b. An air duct outlet 22 is opened on the upper front side of the air outlet cavity 2c. The air duct outlet 22 is higher than the heat exchanger 41. The drainage channel 23 includes a first drainage channel 231. The first drainage channel 231 extends from the lower end of the air duct outlet 22 to the top of the heat exchanger 41 to guide the condensate formed at the air duct outlet 22 to the top of the heat exchanger 41.

[0038] The impeller 31 is a centrifugal impeller 311 whose axis 311a extends in the front-back direction. Airflow is drawn in along the axial direction of the centrifugal impeller 311 and then sent out along the radial direction of the centrifugal impeller 311. As a result, the impeller 31 has a smaller size in the front-back direction and occupies less space in the front-back direction of the impeller cavity 2b, which is beneficial to reducing the front-back size of the air conditioner 100.

[0039] An air outlet chamber 2c is also formed inside the air duct component 2. The air outlet chamber 2c is located above the impeller chamber 2b. The centrifugal impeller 311 in the impeller chamber 2b drives the airflow from the impeller chamber 2b to the air outlet chamber 2c, and the airflow flows out of the air duct component 2 from the air duct outlet 22 on the front side of the upper end of the air outlet chamber 2c.

[0040] The air duct outlet 22 is higher than the heat exchanger 41. By designing the air conditioner 100 to have rear air intake and front upper air outlet, the distance between the air intake and outlet can be increased, the return air can be reduced, and the air duct outlet position is higher, which is conducive to improving the coverage of the air conditioner 100.

[0041] It is understandable that the air duct outlet 22 is in the closest contact with the external environment compared to other parts of the air duct component 2, so condensation is more likely to occur at the air duct outlet 22 of the air duct component 2.

[0042] Therefore, in some embodiments of this utility model, the air duct component 2 includes a first drainage channel 231. The first drainage channel 231 extends from the lower end of the air duct outlet 22 to the top of the heat exchanger 41. The first drainage channel 231 can not only collect the condensate generated at the lower end of the air duct outlet 22, but also receive the condensate generated at the upper end of the air duct outlet 22 dripping under the action of gravity.

[0043] By setting up a first drainage channel 231, the condensate formed at the air duct outlet 22 is diverted to the top of the heat exchanger 41, while the water collection tray 42 is located at the bottom of the heat exchanger 41. The drainage from the first drainage channel 231 can flow naturally downwards along the heat exchanger 41 under the action of gravity, thereby flowing into the water collection tray 42. The water collection tray 42 can collect the condensate formed at the air duct outlet 22, reducing the possibility of condensate flowing out of the air conditioner 100 from the air duct outlet 22.

[0044] In some embodiments of this utility model, such as Figure 4 As shown, the air duct component 2 includes an air duct component 24 and a sound-absorbing grille 25. The air duct component 24 defines an air outlet cavity 2c. The sound-absorbing grille 25 is disposed in the air outlet cavity 2c and located behind the air duct outlet 22. The first drainage channel 231 includes a water tank 2311 disposed on the sound-absorbing grille 25.

[0045] The air duct component 24 is the outer contour component of the air duct component 2. The air duct component 24 defines the air outlet cavity 2c for airflow. The sound-absorbing grille 25 is installed in the air outlet cavity 2c and located behind the air duct outlet 22. The sound-absorbing grille 25 can reduce the noise generated by the airflow, thereby reducing the air outlet noise of the air duct outlet 22 and improving the air supply quality of the air conditioner 100.

[0046] The first drainage channel 231 includes a water trough 2311 disposed on the sound-absorbing grille 25. The water trough 2311 is formed by utilizing the structure of the sound-absorbing grille 25, eliminating the need to set up additional structural components at the air duct outlet 22 to arrange the first drainage channel 231. This simplifies the structure, reduces the wind resistance at the air duct outlet 22, thereby facilitating the air output of the air conditioner 100 and reducing the air output noise of the air conditioner 100.

[0047] In some embodiments of this utility model, such as Figure 5 and Figure 6As shown, the noise-absorbing grille 25 includes a noise-absorbing part 251 and a grille part 252. The grille part 252 extends rearward from the lower end of the air duct outlet 22. The noise-absorbing part 251 is located above the grille part 252 and forms a front-open noise-absorbing air duct 254 with the grille part 252. A water tank 2311 is formed on the grille part 252 and is open at the top. The water tank 2311 includes a water receiving trough 23111 located at the front end of the grille part 252 and extending in the left-right direction. The water tank 2311 also includes a water flow trough 23112 extending rearward from the water receiving trough 23111 to the rear end of the grille part 252. The water flow trough 23112 extends downward at an angle from front to back.

[0048] A sound-absorbing duct 254, opening towards the front, is formed between the grille section 252 and the sound-absorbing section 251. The sound-absorbing duct 254 is connected to the duct outlet 22. When airflow passes through the sound-absorbing duct 254, it is silenced by the sound-absorbing section 251, thereby reducing the exhaust noise of the duct outlet 22 and improving the air supply quality of the air conditioner 100. For example, the sound-absorbing section 251 may be provided with sound-absorbing holes, sound-absorbing layers, or sound-absorbing materials.

[0049] The grille section 252 is located at the lower end of the silencing section 251. The grille section 252 supports the silencing section 251 and improves the installation stability of the silencing grille 25. Furthermore, the grille section 252 extends rearward from the lower end of the air duct outlet 22 and is located below the silencing air duct 254. The grille section 252 can form a protective layer between the air outlet cavity 2c and the air duct outlet 22, which can prevent foreign objects from falling into the air outlet cavity 2c or even the fan cavity through the air duct outlet 22, thereby improving the operational stability of the air conditioner 100.

[0050] A water tank 2311 is formed on the grille section 252 for collecting condensate from the air duct outlet 22. The water tank 2311 includes a water receiving trough 23111 located at the front end of the grille section 252 and extending in the left-right direction. The water receiving trough 23111 has a larger dimension in the left-right direction, thereby increasing the collection range in the left-right direction and improving the collection capacity of condensate from the air duct outlet 22.

[0051] Understandably, the air duct outlet 22 is located above the front of the heat exchanger 41, and the water trough 2311 formed on the grille 252 extends rearward to guide the condensate in front to the heat exchanger 41 located behind. Therefore, the water trough 2311 also includes a water flow trough 23112 extending rearward from the water receiving trough 23111 to the rear end of the grille 252. The water flow trough 23112 extends downward at an angle from front to back.

[0052] By extending the water tank 23112 downwards and tilting it from front to back, the condensate can be accelerated to flow to the rear under the action of gravity, which can reduce the situation where the condensate overflows when the water tank 23112 is full.

[0053] In some embodiments of this utility model, such as Figure 5 and Figure 6 As shown, the noise-reducing grille 25 forms an outlet 253 at the rear end of the water channel 23112, the air duct component 2 includes a water outlet 26, and the first drainage channel 231 includes a water outlet channel 261 defined by the water outlet 26. The water outlet channel 261 extends from the outlet 253 to the top of the heat exchanger 41 to guide the drainage from the outlet 253 to the top of the heat exchanger 41.

[0054] The rear end of the water trough 23112 forms a water outlet 253, and the drainage trough 2323 discharges the condensate through the water outlet 253 to the sound-absorbing grille 25.

[0055] The duct component 2 includes a water outlet 26, which defines a water outlet channel 261. The water outlet 261 has an outlet 253 extending to the top of the heat exchanger 41, guiding the condensate flowing from the outlet 253 through the silencer grille 25 to the top of the heat exchanger 41. Thus, as... Figure 3 and Figure 6 As shown, the first drainage channel 231 includes a water tank 2311 formed on the sound-absorbing grille 25 and a water outlet channel 261 formed on the water outlet 26. The water tank 2311 is used to collect condensate at the air duct outlet 22 and guide the condensate backward. The water outlet channel 261 is used to receive the drainage from the water tank 2311 and guide the water downward to the heat exchanger 41. After the condensate is guided to the top of the heat exchanger 41, the condensate flows naturally downward along the heat exchanger 41 under the action of gravity, thereby flowing into the water receiving tray 42, which can collect the condensate formed at the air duct outlet 22.

[0056] In some embodiments of this utility model, such as Figure 6 and Figure 7 As shown, the air duct component 24 defines a groove 24a, which is located on the rear side outside the air outlet cavity 2c and extends downward from the water outlet 253 to the top of the heat exchanger 41. The water outlet component 26 is embedded in the groove 24a; and / or, the upper end of the water outlet component 26 has a hook 262, and the water outlet component 26 is hung on the air duct component 24 by the hook 262.

[0057] The air duct component 24 and the water outlet component 26 are formed separately and then assembled and connected, which can reduce the manufacturing difficulty of the air duct component 24 and the water outlet component 26 and save manufacturing costs.

[0058] The duct component 24 defines a recess 24a, which is located on the rear side outside the air outlet cavity 2c. The recess 24a does not affect the air outlet of the air outlet cavity 2c, and the airflow within the air outlet cavity 2c does not affect the flow of condensate within the water outlet component 26. The water outlet component 26 is embedded in the recess 24a, which improves the installation stability of the water outlet component 26 and the duct component 24, as well as the stability of the water outlet component 26 in receiving condensate.

[0059] Alternatively, the water outlet 26 can be hung on the air duct component 24 via the hook 262 at the upper end. The assembly method of the water outlet 26 and the air duct component 24 is simple and easy to operate.

[0060] Alternatively, the water outlet 26 can be embedded in the groove 24a and the upper end of the water outlet 26 can be hung on the air duct component 24 by the hook 262. This can improve the installation stability of the water outlet 26 and the air duct component 24, reduce the shaking of the water outlet 26, and improve the stability of the water outlet 26 in receiving condensate.

[0061] In some embodiments of this utility model, such as Figure 6 and Figure 8 As shown, the silencing part 251 includes a guide part 2511 and a side plate part 2512. The side plate part 2512 is located on the left and right sides of the guide part 2511. The guide part 2511 extends from the rear end of the grille part 252 towards the upper end of the air duct outlet 22. The lower end of the guide part 2511 is rotatably connected to the rear end of the grille part 252. The lower ends of the side plate parts 2512 on both sides are connected to the left and right ends of the grille through a snap-fit ​​structure 2513.

[0062] For example, the snap-fit ​​structure 2513 may include a snap hole 35131 and a snap fastener 25132, with the snap fastener 25132 extending into the snap hole 35131 to form a snap-fit ​​engagement. One of the snap hole 35131 and the snap fastener 25132 may be located on the side plate portion 2512, and the other may be located on the grille portion 252. Of course, this invention is not limited to this; for example, the connection can also be achieved through threaded fasteners, welding, or other methods.

[0063] The specific method by which the lower end of the guide portion 2511 is rotatably connected to the rear end of the grille portion 252 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 portion 2511 and the grille portion 252), or rotatably connected by a rigid hinge formed by the insertion of a rotating shaft and a shaft hole.

[0064] The silencing section 251 includes a guide section 2511 extending from bottom to front and upward. The guide section 2511 defines a curved, forward-extending silencing duct 254, which can improve the airflow guiding effect and reduce the turbulence generated by the airflow impacting the guide section 2511. The side plate section 2512 is connected to the left and right sides of the guide section 2511, which can improve the structural stability of the silencing section 251.

[0065] The lower rear end of the guide portion 2511 is rotatably connected to the rear end of the grille portion 252, allowing the grille portion 252 to rotate and open relative to the guide portion 2511. This allows the grille portion 252 and the guide portion 2511 to be manufactured separately and then assembled, reducing the manufacturing difficulty of the muffler portion 251 and saving manufacturing costs. The lower ends of the side plates 2512 on both sides are snap-fitted to the left and right ends of the grille portion 252, improving the structural stability of the muffler portion 251 and reducing the shaking caused by airflow impact on the grille portion 252, thus helping to reduce airflow noise.

[0066] In some embodiments of this utility model, such as Figure 3 and Figure 7 As shown, the impeller 31 is a centrifugal impeller 311 with its axis 311a extending in the front-rear direction. The air duct component 2 includes an air guide ring 2412 surrounding the centrifugal impeller 311, which defines the impeller cavity 2b. The air duct component 2 also includes a motor mounting plate 27 located in front of the air guide ring 2412. The fan component 3 includes a drive motor 32, which is mounted on the rear side of the motor mounting plate 27 and connected to the impeller 31. The drainage channel 23 includes a second drainage channel 232, which is used to guide the condensate formed in the air guide ring 2412 and / or the condensate formed on the motor mounting plate 27 to the water receiving tray 42.

[0067] The impeller 31 is a centrifugal impeller 311 whose axis 311a extends in the front-back direction. Airflow is drawn in along the axial direction of the centrifugal impeller 311 and then sent out along the radial direction of the centrifugal impeller 311. As a result, the impeller 31 has a smaller size in the front-back direction and occupies less space in the front-back direction of the impeller cavity 2b, which is beneficial to reducing the front-back size of the air conditioner 100.

[0068] The air duct component 2 includes an air guide ring 2412, which defines the impeller cavity 2b. The air guide ring 2412 surrounds the centrifugal impeller 311 and can reduce the turbulence generated by the airflow impacting the air guide ring 2412 within the impeller cavity 2b. The air duct component 2 also includes a motor mounting plate 27 located in front of the air guide ring 2412. The drive motor 32 is mounted on the rear side of the motor mounting plate 27 and connected to the impeller 31. The drive motor 32 is relatively heavy, and by providing the motor mounting plate 27 for mounting the drive motor 32, the installation stability of the drive motor 32 can be improved.

[0069] It is understandable that the air guide ring 2412 defines the impeller cavity 2b, and the motor mounting plate 27 is located in front of the air guide ring 2412. The motor mounting plate 27 and the air guide ring 2412 together define a relatively sealed impeller cavity 2b, reducing airflow dissipation. The motor mounting plate 27 and the air guide ring 2412 are in frequent contact with the heat exchange airflow, which makes it easy for condensation to form on the motor mounting plate 27 and the air guide ring 2412.

[0070] Therefore, some embodiments of this utility model also provide a second drainage channel 232, which is used to guide the condensate formed in the air guide ring 2412 and / or the condensate formed on the motor mounting plate 27 to the water receiving tray 42, thereby reducing the situation where the condensate formed in the air guide ring 2412 and / or the condensate formed on the motor mounting plate 27 drips onto the ground and splashes inside the housing 1.

[0071] The second drainage channel 232 can be used to guide condensate formed in the air guide ring 2412 to the drip tray 42, or it can also be used to guide condensate formed on the motor mounting plate 27 to the drip tray 42. Alternatively, the second drainage channel 232 can be used to guide both the condensate formed in the air guide ring 2412 and the condensate formed on the motor mounting plate 27 to the drip tray 42. For example, the condensate formed on the motor mounting plate 27 and the condensate formed in the air guide ring 2412 can flow together and then flow together to the drip tray 42.

[0072] In some embodiments of this utility model, such as Figure 3 and Figure 14 As shown, the air duct component 2 includes a first volute 241, a motor mounting plate 27 located on the front side of the first volute 241, the first volute 241 including a rear air duct plate 2411 and an air guide ring 2412, an air inlet 2a formed on the rear side of the rear air duct plate 2411, an air duct inlet 21 formed on the rear air duct plate 2411, the air guide ring 2412 extending forward from the rear air duct plate 2411 and surrounding the air duct inlet 21, and a water receiving tray 42 located behind the rear air duct plate 2411 and below the air guide ring 2412. Figures 9-12 As shown, the second drainage channel 232 includes a drainage channel 2321 and a drainage outlet 2322. The drainage channel 2321 is located below the air guide ring 2412 and penetrates the first volute 241 in the front-back direction. The drainage outlet 2322 is formed at the bottom front end of the air guide ring 2412. The drainage outlet 2322 penetrates the air guide ring 2412 vertically and can drain water into the drainage channel 2321. The rear end of the drainage channel 2321 can drain water into the water receiving tray 42.

[0073] The first volute 241 includes a rear air duct plate 2411 and an air guide ring 2412. The air guide ring 2412 is located in front of the rear air duct plate 2411 and extends forward around the air duct inlet 21 on the rear air duct plate 2411. An air inlet cavity 2a is formed on the rear side of the rear air duct plate 2411. Therefore, the airflow direction is that it flows from the air inlet area 11a into the air inlet cavity 2a, exchanges heat with the heat exchanger 41 in the air inlet cavity 2a, and then flows forward into the impeller cavity 2b formed by the air guide ring 2412.

[0074] The water collection tray 42 is located below the heat exchanger 41, that is, below the air inlet chamber 2a. The water collection tray 42 is positioned behind the rear air duct plate 2411 and below the air guide ring 2412. The air guide ring 2412 and the motor mounting plate 27 are both located on the front side of the rear air duct plate 2411. Therefore, the second drainage channel 232 is used to guide the condensate formed in the air guide ring 2412 and / or the condensate formed on the motor mounting plate 27 to the water collection tray 42. Thus, the second drainage channel 232 includes a drainage channel 23 that penetrates the first volute 241 in the front-rear direction, so as to guide the condensate located on the front side of the rear air duct plate 2411 to the rear side of the rear air duct plate 2411 through the first volute 241.

[0075] A drain outlet 2322 is provided at the bottom front end of the air guide ring 2412. The drain outlet 2322 extends vertically through the air guide ring 2412 and is connected to the drain channel 2321 located below the air guide ring 2412. The condensate generated on the air guide ring 2412 will collect at the bottom of the air guide ring 2412 under the action of gravity, and then flow through the drain outlet 2322 to the drain channel 2321, thereby flowing towards the rear end along the drain channel 2321 and draining into the water receiving tray 42.

[0076] In some embodiments of this utility model, such as Figure 9 , Figure 10 As shown, a slot 241a is formed on the first volute 241, which is lower than the air guide ring 2412 and opens to the front. The drainage channel 2321 communicates with the slot 241a, as shown. Figures 13-15 As shown, the motor mounting plate 27 includes a front plate 271 and a bottom plate 272. The front plate 271 is located on the front side of the first volute 241. The bottom plate 272 extends rearward from the lower end of the front plate 271 into the slot 241a. The second drainage channel 232 includes a drainage groove 2323 formed on the top of the bottom plate 272. The drainage groove 2323 is opposite to the slot 241a and drains water into the drainage channel 2321. The condensate formed on the motor mounting plate 27 and the condensate discharged from the drain outlet 2322 can both enter the drainage channel 2321 through the drainage groove 2323.

[0077] The drainage channel 2321 can not only guide the condensate formed in the air guide ring 2412 to the water receiving tray 42, but also guide the condensate formed on the motor mounting plate 27 to the water receiving tray 42.

[0078] The front plate 271 of the motor mounting plate 27 is located on the front side of the first volute 241. The bottom plate 272 is connected to the lower end of the front plate 271 and extends rearward. The bottom plate 272 extends into the slot 241a, which not only improves the assembly stability between the motor mounting plate 27 and the first volute 241, but also allows condensate to be transported to the drainage channel 2321 via the bottom plate 272. A drainage groove 2323 is formed on the top of the bottom plate 272. After the bottom plate 272 is inserted into the slot 241a, the drainage groove 2323 is opposite to the slot 241a, so that it can drain water into the drainage channel 2321 that communicates with the slot 241a.

[0079] The condensate formed on the motor mounting plate 27 is collected at the top of the base plate 272 under the action of gravity, and then flows into the slot 241a through the base plate 272, and then into the drainage channel 2321, thereby flowing towards the rear end along the drainage channel 2321 and draining into the water receiving tray 42.

[0080] It should be noted that after the condensate formed in the air guide ring 2412 flows down through the drain outlet 2322, if it flows down into the drain groove 2323 at the top of the bottom plate 272, it will merge with the condensate on the bottom plate 272 and flow together along the path from the slot 241a to the drain channel 2321.

[0081] In some embodiments of this utility model, such as Figure 15 and Figure 18 As shown, the motor mounting plate 27 includes a left plate 273 and a right plate 274, which are respectively located on the left and right sides of the front plate 271 and extend backward. The bottom plate 272 is connected between the lower end of the left plate 273 and the lower end of the right plate 274, and extends downward at an angle from front to back. The bottom plate 272 has a left water-blocking rib 2721 and a right water-blocking rib 2722, which are spaced apart from left to right. The space between the left water-blocking rib 2721 and the right water-blocking rib 2722 forms a drainage groove 2323. The left water-blocking rib 2721 extends backward at an angle from the left plate 273 to the drainage groove 2323, and the right water-blocking rib 2722 extends backward at an angle from the right plate 274 to the drainage groove 2323. The drain outlet 2322 is located directly above the front of the left water-blocking rib 2721, or directly above the front of the right water-blocking rib 2722, or directly above the front of the drainage groove 2323.

[0082] The motor mounting plate 27 includes a left plate 273 and a right plate 274 located on the left and right sides of the front plate 271, respectively. The motor mounting plate 27 can be connected to the housing 1 through the left plate 273 and the right plate 274, thereby improving the connection stability of the motor mounting plate 27.

[0083] The base plate 272 extends downwards and tilts from front to back, which accelerates the flow of condensate collected at the top of the base plate 272 to the rear.

[0084] The base plate 272 is also provided with a left water-blocking rib 2721 and a right water-blocking rib 2722 spaced apart in the left-right direction. The left water-blocking rib 2721 is located near the left plate 273, and the right water-blocking rib 2722 is located near the right plate 274. A drainage groove 2323 is formed at the interval between the left water-blocking rib 2721 and the right water-blocking rib 2722. The left and right water-blocking ribs 2722 extend backward at an incline toward the drainage groove 2323, thereby guiding the condensate collected at the top of the base plate 272 toward the drainage groove 2323, which can improve the flow stability of condensation.

[0085] The drain outlet 2322 can be located directly above and in front of the left baffle 2721. After the condensate formed within the air guide ring 2412 flows downwards through the drain outlet 2322, the left baffle 2721 can block the forward flow of the condensate and guide it towards the drain trough 2323. Alternatively, the drain outlet 2322 can be located directly above and in front of the right baffle 2722. After the condensate formed within the air guide ring 2412 flows downwards through the drain outlet 2322, the right baffle 2722 can block the forward flow of the condensate. The condensate is directed to the drain trough 2323; or, the drain outlet 2322 is located directly above and in front of the drain trough 2323. After the condensate formed in the air guide ring 2412 flows downward through the drain outlet 2322, the front plate 271 can block the forward flow of the condensate, and the condensate will flow to the drain trough 2323 behind under the action of gravity. Even if it deviates to the left or right, it will be blocked and guided to the drain trough 2323 by the left water baffle 2721 or the right water baffle 2722, thereby improving the flow stability of the condensate.

[0086] In some embodiments of this utility model, such as Figures 16-18 As shown, the first volute 241 also includes side air duct plates 2413 located on the left and right sides of the rear air duct plate 2411 and extending rearward relative to the rear air duct plate 2411. Both the side air duct plates 2413 and the rear air duct plate 2411 are provided with water baffles 241b. The water baffles 241b are set higher than the water receiving tray 42, and the top edge of the corresponding position of the water receiving tray 42 protrudes horizontally towards the inside of the water receiving tray 42 to cover the gap between the top edge of the water receiving tray 42 and the first volute 241. The water baffle 241b provided on the rear air duct plate 2411 is the rear water baffle 241b1. The drainage channel 2321 is higher than the rear water baffle 241b1 so as to drain water to the water receiving tray 42 through the rear water baffle 241b1.

[0087] The side air duct plate 2413 and the rear air duct plate 2411 together define the air inlet cavity 2a, which can reduce the escape of the airflow after heat exchange from the edge of the rear air duct plate 2411. Both the side air duct plate 2413 and the rear air duct plate 2411 are provided with water baffles 241b. The water baffles 241b on the side air duct plate 2413 and the water baffles 241b on the rear air duct plate 2411 can be spaced apart in the vertical direction, or the water baffles 241b on the side air duct plate 2413 and the water baffles 241b on the rear air duct plate 2411 can also be connected as one piece.

[0088] The water baffle 241b is set higher than the water receiving tray 42, and its top edge at the corresponding position relative to the water receiving tray 42 protrudes horizontally toward the inside of the water receiving tray 42 to cover the gap between the top edge of the water receiving tray 42 and the first volute 241. This can improve the situation where the condensate flowing from the rear air duct plate 2411 to the water receiving tray 42 leaks out from the gap between the water receiving tray 42 and the first volute 241.

[0089] The rear water-retaining eaves 241b1, located on the rear air duct plate 2411, are situated below the drainage channel 2321, such as... Figure 11 , Figure 16 and Figure 17 As shown, the drainage channel 2321 has an outlet 241c on the rear air duct plate 2411, and the outlet 241c is higher than the rear water baffle 241b1. In this way, when the condensate flowing out of the drainage channel 2321 through the outlet 241c flows downward, it is caught by the rear water baffle 241b1, reducing the leakage of condensate from the gap between the water receiving tray 42 and the first volute 241, and stably guiding the condensate to the water receiving tray 42.

[0090] In some embodiments of this utility model, such as Figure 17 and Figure 18 As shown, the front wall of the water receiving tray 42 is located below the rear water baffle 241b1. The inner side of the front wall of the water receiving tray 42 has an inner conduit structure 421, and the outer side of the front wall of the water receiving tray 42 has an outer conduit structure 422. The inner conduit structure 421 is lower than the highest water level of the water receiving tray 42. Figure 19 As shown, the heat exchange component 4 also includes an electric auxiliary heater 43, which is located in front of the heat exchanger 41. The electric auxiliary heater 43 is connected to a first wire 431. The first wire 431 extends downward from the electric auxiliary heater 43 into the water receiving pan 42 and is constrained by the inner wire bundle structure 421. Then it extends upward from the top of the front wall of the water receiving pan 42, crosses over to the outside of the front wall of the water receiving pan 42, and extends downward and is constrained by the outer wire bundle structure 422.

[0091] The front wall of the water receiving tray 42 is located below the rear water baffle 241b1. When the condensate flowing down from the drainage channel 2321 through the outlet 253, it is caught by the rear water baffle 241b1, reducing the leakage of condensate from the gap between the water receiving tray 42 and the first volute 241, and stably guiding the condensate to the water receiving tray 42.

[0092] The water receiving tray 42 is provided with an inner wire harness structure 421 and an outer wire harness structure 422. The first wire 431 of the electric auxiliary heater 43 is constrained by the inner wire harness structure 421 and the outer wire harness structure 422, which can improve the neatness of the wiring, reduce the impact on the first wire 431 and its shaking inside the housing 1, and improve the working reliability of the electric auxiliary heater 43.

[0093] By utilizing the existing water tray 42 to set up the inner wire harness structure 421 and the outer wire harness structure 422 to limit the first wire 431, 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.

[0094] The inner wire structure 421 is located inside the water receiving tray 42. The first wire 431 extends downward from the electric auxiliary heater 43 into the water receiving tray 42, and then extends upward over the top wall of the water receiving tray 42 to the outside. In this way, the first wire 431 acts as a bridge, allowing the condensate generated on the electric auxiliary heater 43 to flow steadily into the water receiving tray 42 along the first wire 431, reducing the possibility of condensate dripping out of the water receiving tray 42 or splashing. Furthermore, the first wire 431 then extends upward over the top wall of the water receiving tray 42 from inside the water receiving tray 42, forming a water trap, which prevents water droplets from flowing out of the water receiving tray 42 along the first wire 431.

[0095] The inner wire bundle structure 421 is lower than the highest water level of the water receiving tray 42, thereby stably introducing the condensate generated on the electric auxiliary heater 43 into the water receiving tray 42. Furthermore, when the water level in the water receiving tray 42 does not reach the inner wire bundle structure 421, the condensate flows out from the wall of the water receiving tray 42, thus reducing the likelihood of the first wire 431 being immersed in condensate and extending its service life.

[0096] In some embodiments of this utility model, such as Figure 7 and Figure 19 As shown, both the rear box bottom plate 11 and the heat exchanger 41 are flat plates and arranged parallel to each other. Sealing plates 411 are provided on both the left and right sides of the heat exchanger 41. The heat exchanger 41 is mounted to the rear box bottom plate 11 via the sealing plates 411. Figure 3 As shown, the water receiving tray 42 is also installed on the bottom plate 11 of the rear box, and the upper end of the rear plate of the water receiving tray 42 extends to the rear of the lower end of the heat exchanger 41.

[0097] Both the rear casing bottom plate 11 and the heat exchanger 41 are flat and arranged in parallel. The heat exchanger 41 occupies less space inside the casing 1, which is beneficial for the miniaturization of the entire unit. Furthermore, by assembling the heat exchanger 41 parallel to the rear casing bottom plate 11, the indoor air passes vertically through the heat exchanger 41, resulting in higher heat exchange efficiency. Since the indoor air passes through the heat exchanger 41 in a turbulent state, the noise of the indoor unit can be reduced. In addition, the air conditioner 100 is assembled horizontally, which is more suitable for production and fixing by robotic arms, resulting in high production efficiency and low cost.

[0098] There are two sealing plates 411, which are arranged on the left and right sides of the heat exchanger 41. The sealing plates 411 are used to assemble and connect the heat exchanger 41 with the rear box bottom plate 11. The sealing plates 411 extend in the vertical direction, which can increase the connection area with the heat exchanger 41 and the rear box bottom plate 11, and improve the assembly stability of the heat exchanger 41 and the rear box bottom plate 11.

[0099] In addition, the sealing plate 411 also seals the left and right sides of the heat exchanger 41 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 41 for heat exchange, reducing the airflow from flowing out directly from the edge of the heat exchanger 41 without heat exchange, which can improve the heat exchange efficiency of the air conditioner 100.

[0100] The drip tray 42 is mounted on the rear floor plate 11, which reduces the burden on the heat exchange component 4 and improves the working stability of the heat exchange component 4. In some embodiments of this utility model, the drip tray 42 is mounted on the rear floor plate 11, and the heat exchange component 4 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 42 and the heat exchange component 4 are respectively mounted on the rear floor plate 11, which can improve the assembly accuracy between the drip tray 42 and the heat exchange component 4. Furthermore, since the drip tray 42 and the heat exchange component 4 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.

[0101] The upper end of the rear plate of the water receiving tray 42 extends to the lower rear end of the heat exchanger 41, which can reduce the dripping of condensate from the edge of the water receiving tray 42 on the heat exchanger 41 and improve the water receiving effect of the water receiving tray 42 on the condensate on the heat exchanger 41.

[0102] In some embodiments of this utility model, such as Figure 7 and Figure 14As shown, the air duct component 2 includes an air duct element 24, forming an air inlet cavity 2a between the air duct element 24 and the rear box bottom plate 11. The impeller 31 is a centrifugal impeller 311 with its axis extending in the front-rear direction. The air duct element 24 includes an air guide ring 2412 surrounding the centrifugal impeller 311, defining an impeller cavity 2b and forming an air outlet cavity 2c communicating with the impeller cavity 2b. An air duct outlet 22 communicating with the air outlet cavity 2c is provided on the air duct element 24. The air duct element 24 includes a first volute 241 and a second volute 242, which are machined separately. The air guide ring 2412 is integrally formed with the first volute 241, and the air outlet 22 is provided on the second volute 242. Figure 20 and Figure 21 As shown, the first volute 241 and the second volute 242 are spliced ​​together by a stepped structure 24b, and the air duct component 24 is an insulation material component.

[0103] The impeller 31 is a centrifugal impeller 311 extending along the axis 311a. Airflow is drawn in along the axial direction of the centrifugal impeller 311 and then discharged along the radial direction of the centrifugal impeller 311. As a result, the impeller 31 has a smaller size in the front-rear direction and occupies less space in the front-rear direction of the impeller cavity 2b, which is beneficial to reducing the front-rear size of the air conditioner 100.

[0104] The air duct component 2 includes an air duct element 24, which forms an air inlet cavity 2a between itself and the rear box bottom plate 11. The air duct element 24 includes a guide ring 2412, which defines an outlet impeller cavity 2b and surrounds the centrifugal impeller 311. An air outlet cavity 2c communicating with the impeller cavity 2b is also formed within the air duct element 24, and an air duct outlet 22 communicating with the outlet cavity 2c is provided on the air duct element 24.

[0105] The airflow direction is as follows: it flows from the air inlet area 11a into the air inlet cavity 2a, exchanges heat with the heat exchanger 41 in the air inlet cavity 2a, and then flows forward into the impeller cavity 2b formed by the guide ring 2412. Then the airflow flows from the impeller cavity 2b to the air outlet cavity 2c, and then flows out of the air duct component 24 from the air duct outlet 22.

[0106] The first volute 241 and the second volute 242 are joined by a stepped structure 24b, which reduces the gap between the first volute 241 and the second volute 242, improves sealing, and reduces airflow loss at the connection point of the first volute 241 and the second volute 242. Figure 21 As shown, both the first volute 241 and the second volute 242 are provided with stepped structures 24b. The first volute 241 and the second volute 242 overlap in the front-to-back direction and also overlap in the left-to-right direction through the stepped structures 24b, which can improve the fit stability of the first volute 241 and the second volute 242, and reduce the gap between the first volute 241 and the second volute 242, thereby improving the sealing performance.

[0107] The duct component 24 is made of insulating material. The centrifugal impeller 311 is disposed within the duct component 24, and the heat exchange component 4 is disposed within the air inlet cavity 2a formed by the duct component 24. The insulating material of the duct component 24 improves its thermal insulation, reduces heat loss after heat exchange between the airflow and the heat exchange component 4, and helps improve the air outlet heat exchange efficiency of the air conditioner 100. For example, the duct component 24 can be made of foam plastic.

[0108] Furthermore, when the air duct component 24 is set as an insulation material component, if the air duct component 24 includes separately machined upper and lower volutes, and the upper and lower volutes are spliced ​​together, the processing difficulty of the air duct component 24 can be further reduced. When the air duct component 24 is foamed using a foaming mold, setting the air duct component 24 as a separate structure can reduce the size of the foaming mold, improve the foaming quality, and reduce processing costs.

[0109] Not limited to this, the air duct component 24 can also be a one-piece molded part, thereby improving the integrity and sealing of the air duct component 24 and reducing the loss of airflow.

[0110] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", etc., 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.

[0111] 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.

[0112] 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.

[0113] 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.

[0114] 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.

[0115] 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; A duct component is provided inside the housing and forms an air inlet cavity between itself and the bottom plate of the rear box. A fan wheel cavity is formed inside the duct component. The fan wheel cavity is located in front of the air inlet cavity. The duct component has an air inlet communicating with the air inlet cavity on the rear side of the fan wheel cavity. A fan component, the fan component including a fan wheel disposed within the fan wheel cavity; A heat exchange component, the heat exchange component including a heat exchanger disposed in the air inlet cavity, and an air inlet area located behind the heat exchanger on the bottom plate of the rear box; The heat exchange component further includes a water receiving tray, which is located at the bottom of the heat exchanger, and the air duct component includes a drainage channel that drains water directly or indirectly to the water receiving tray.

2. The air conditioner according to claim 1, characterized in that, The impeller is a centrifugal impeller with its axis extending in the front-rear direction. An air outlet cavity is formed inside the air duct component, and the air outlet cavity is located above the impeller cavity. The air duct component has an air duct outlet on the upper front side of the air outlet cavity. The air duct outlet is higher than the heat exchanger. The drainage channel includes a first drainage channel, which extends from the lower end of the air duct outlet to the top of the heat exchanger to guide the condensate formed at the air duct outlet to the top of the heat exchanger.

3. The air conditioner according to claim 2, characterized in that, The air duct component includes an air duct element and a sound-absorbing grille. The air duct element defines the air outlet cavity. The sound-absorbing grille is disposed in the air outlet cavity and located behind the air duct outlet. The first drainage channel includes a water trough disposed on the sound-absorbing grille.

4. The air conditioner according to claim 3, characterized in that, The sound-absorbing grille includes a sound-absorbing section and a grille section. The grille section extends rearward from the lower end of the air duct outlet. The sound-absorbing section is located above the grille section and forms a front-open sound-absorbing air duct with the grille section. The water trough is formed on the grille section and is open at the top. The water trough includes a water receiving trough located at the front end of the grille section and extending in the left-right direction. The water trough also includes a water flow trough extending rearward from the water receiving trough to the rear end of the grille section. The water flow trough extends downward at an angle from front to back.

5. The air conditioner according to claim 4, characterized in that, The noise-reducing grille forms a water outlet at the rear end of the water trough. The air duct component includes a water outlet element. The first drainage channel includes a water outlet channel defined by the water outlet element. The water outlet channel extends from the water outlet to the top of the heat exchanger to guide the drainage from the water outlet to the top of the heat exchanger.

6. The air conditioner according to claim 5, characterized in that, The air duct component defines a groove located on the rear side outside the air outlet cavity and extending downward from the water outlet to the top of the heat exchanger; the water outlet component is embedded in the groove; and / or, the upper end of the water outlet component has a hook, and the water outlet component is hung on the air duct component by the hook.

7. The air conditioner according to claim 4, 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 upper front 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 snap-fitted to the left and right ends of the grille part respectively.

8. The air conditioner according to claim 1, characterized in that, The impeller is a centrifugal impeller with its axis extending in the front-to-back direction. The air duct component includes an air guide ring surrounding the centrifugal impeller, which defines the impeller cavity. The air duct component also includes a motor mounting plate located in front of the air guide ring. The fan component includes a drive motor, which is mounted on the rear side of the motor mounting plate and connected to the impeller. The drainage channel includes a second drainage channel, which is used to guide the condensate formed in the air guide ring and / or the condensate formed on the motor mounting plate to the water receiving tray.

9. The air conditioner according to claim 8, characterized in that, The air duct component includes a first volute, the motor mounting plate is located on the front side of the first volute, the first volute includes a rear air duct plate and the air guide ring, the air inlet cavity is formed on the rear side of the rear air duct plate, the air duct inlet is formed on the rear air duct plate, the air guide ring extends forward from the rear air duct plate and surrounds the air duct inlet, the water receiving tray is located behind the rear air duct plate and below the air guide ring, the second drainage channel includes a drainage channel and a drain outlet, the drainage channel is located below the air guide ring and penetrates the first volute in the front-rear direction, the drain outlet is formed at the bottom front end of the air guide ring, the drain outlet penetrates the air guide ring vertically and can drain water into the drainage channel, and the rear end of the drainage channel can drain water into the water receiving tray.

10. The air conditioner according to claim 9, characterized in that, The first volute has a slot that is lower than the air guide ring and opens to the front. The drainage channel communicates with the slot. The motor mounting plate includes a front plate and a bottom plate. The front plate is located on the front side of the first volute. The bottom plate extends rearward from the lower end of the front plate into the slot. The second drainage channel includes a drainage groove formed on the top of the bottom plate. The drainage groove is opposite to the slot and drains water into the drainage channel. The condensate formed on the motor mounting plate and the condensate discharged from the drain outlet can both enter the drainage channel through the drainage groove.

11. The air conditioner according to claim 10, characterized in that, The motor mounting plate includes a left plate and a right plate, which are respectively located on the left and right sides of the front plate and extend rearward. The bottom plate is connected between the lower ends of the left plate and the lower ends of the right plate and extends downward at an angle from front to back. The bottom plate has a left water-blocking rib and a right water-blocking rib that are spaced apart from left to right. The gap between the left water-blocking rib and the right water-blocking rib forms the drainage groove. The left water-blocking rib extends obliquely rearward from the left plate to the drainage groove, and the right water-blocking rib extends obliquely rearward from the right plate to the drainage groove. The drain outlet is located directly above the front of the left water-blocking rib, or directly above the front of the right water-blocking rib, or directly above the front of the drainage groove.

12. The air conditioner according to claim 9, characterized in that, The first volute also includes side air duct plates located on the left and right sides of the rear air duct plate and extending rearward relative to the rear air duct plate. Both the side air duct plates and the rear air duct plate are provided with water-retaining eaves. The water-retaining eaves are set higher than the water receiving tray, and their top edges at corresponding positions relative to the water receiving tray protrude horizontally toward the interior of the water receiving tray to cover the gap between the top edge of the water receiving tray and the first volute. The water-retaining eaves provided on the rear air duct plate are rear water-retaining eaves. The drainage channel is higher than the rear water-retaining eaves to drain water to the water receiving tray through the rear water-retaining eaves.

13. The air conditioner according to claim 12, characterized in that, The front wall of the water receiving tray is located below the rear water baffle. The inner side of the front wall of the water receiving tray has an inner wire structure, and the outer side of the front wall of the water receiving tray has an outer wire structure. The inner wire structure is lower than the highest water level of the water receiving tray. The heat exchange component also includes an electric auxiliary heater. The electric auxiliary heater is located in front of the heat exchanger. The electric auxiliary heater is connected to a first wire. The first wire extends downward from the electric auxiliary heater into the water receiving tray and is constrained by the inner wire structure. Then it extends upward from the top of the front wall of the water receiving tray, crosses over to the outer side of the front wall of the water receiving tray, and extends downward and is constrained by the outer wire structure.

14. The air conditioner according to claim 1, characterized in that, The rear chamber bottom plate and the heat exchanger are both flat plates and are arranged in parallel. The heat exchanger is provided with sealing plates on the left and right sides. The heat exchanger is installed on the rear chamber bottom plate through the sealing plates. The water receiving tray is also installed on the rear chamber bottom plate, and the upper end of the rear plate of the water receiving tray extends to the lower rear end of the heat exchanger.

15. The air conditioner according to claim 1, characterized in that, The air duct component includes an air duct element, which forms the air inlet cavity with the rear box bottom plate. The impeller is a centrifugal impeller with its axis extending in the front-rear direction. The air duct element includes an air guide ring surrounding the centrifugal impeller, which defines the impeller cavity. An air outlet cavity communicating with the impeller cavity is formed inside the air duct element. An air duct outlet communicating with the air outlet cavity is provided on the air duct element. The air duct element includes a first volute and a second volute that are processed separately. The air guide ring is integrally formed with the first volute. The air outlet is provided on the second volute. The first volute and the second volute are spliced ​​together by a stepped structure. The air duct element is made of thermal insulation material.

Images