CN111853937A

CN111853937A - Indoor unit of air conditioner

Info

Publication number: CN111853937A
Application number: CN202010723040.4A
Authority: CN
Inventors: 孙合庆; 张江; 李本卫
Original assignee: Hisense Shandong Air Conditioning Co Ltd
Current assignee: Hisense Shandong Air Conditioning Co Ltd
Priority date: 2020-07-24
Filing date: 2020-07-24
Publication date: 2020-10-30

Abstract

The invention provides an air conditioner indoor unit, and belongs to the technical field of air conditioners. The air-conditioning indoor unit comprises: a case having an air outlet formed thereon; the flexible curtain is rotatably connected to the inner side of the air outlet and is provided with a soft air outlet area and a normal air outlet area which are formed by a plurality of micropores; the driving device is connected with the flexible curtain to drive the flexible curtain to rotate; when the flexible curtain rotates to a normal position where the normal air outlet area is opposite to the air outlet, air is sent out through the normal air outlet area; when the flexible curtain rotates to the soft wind position where the soft wind outlet area is opposite to the air outlet, the air is sent out of the soft wind through the soft wind outlet area. This air conditioning indoor set can the gentle wind air-out, and the problem of blowing people when avoiding the air conditioner refrigeration has the advantage that user experience is good.

Description

Indoor unit of air conditioner

Technical Field

The invention belongs to the technical field of air conditioners, and particularly relates to an air conditioner indoor unit.

Background

The air outlet of present air conditioner generally locates the positive front side of air conditioner fuselage, and wind directly blows out from the air outlet, no matter the user stands or the position of sitting, all is difficult to avoid being blown by wind, influences user's use and experiences, and the aviation baffle of air outlet also only changes the air-out direction of air conditioner, can't solve the problem that the wind blows the people.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the air conditioner indoor unit with soft air outlet is provided, the problem that people are blown by air during air conditioner refrigeration can be avoided, and the air conditioner indoor unit has the advantage of good user experience.

According to this disclosed embodiment's air conditioning indoor set, includes: a case having an air outlet formed thereon; the flexible curtain is rotatably connected to the inner side of the air outlet and is provided with a soft air outlet area and a normal air outlet area which are formed by a plurality of micropores; the driving device is connected with the flexible curtain to drive the flexible curtain to rotate; when the flexible curtain rotates to a normal position where the normal air outlet area is opposite to the air outlet, air is sent out through the normal air outlet area; when the flexible curtain rotates to the soft wind position where the soft wind outlet area is opposite to the air outlet, the air is sent out of the soft wind through the soft wind outlet area.

According to the air-conditioning indoor unit disclosed by the embodiment of the invention, the flexible curtain is arranged on the inner side of the air outlet, the flexible curtain is provided with the normal air outlet area and the soft air outlet area, the flexible curtain rotates, when the normal air outlet area is opposite to the air outlet, the air conditioner normally supplies air from the air outlet, and when the soft air outlet area is opposite to the air outlet, the air in the air conditioner is firstly scattered by the soft air outlet area and then is sent out from the air outlet, so that the soft air outlet function of the air-conditioning indoor unit is realized, and the problem of blowing people during refrigeration is avoided; meanwhile, the air conditioner indoor unit realizes that the change of the air conditioner structure is small by the arrangement of soft wind through the flexible curtain, and has the advantages of simple structure, convenient manufacture and wide application range; in addition, the flexible curtain of the indoor unit of the air conditioner is arranged on the inner side of the air outlet, so that the problem of discomfort in dense appearance caused by arrangement of micropores on an external door plate of the air conditioner in the prior art is solved.

According to some embodiments of the disclosure, the driving device comprises: a roller including a first roller and a second roller supported at opposite ends of the flexible shade; the motor is connected with the first rolling shaft or the second rolling shaft and used for providing driving force for the rolling shafts; the synchronizing wheel is arranged on the roller, the synchronizing belt is arranged on two sides of the flexible curtain, and the synchronizing belt is in matched transmission with the synchronizing wheel so that the flexible curtain rotates circularly between the first roller and the second roller.

According to some embodiments of the present disclosure, the synchronous belt is integrally formed with the flexible curtain, or the synchronous belt is connected with the flexible curtain.

According to some embodiments of the present disclosure, the water collecting device further comprises a water collecting member disposed below the flexible curtain for collecting condensed water flowing down from the flexible curtain, and the water collecting member is fixedly connected to the casing.

According to some embodiments of the present disclosure, the water receiving device further comprises a supporting frame, which is enclosed in the outer ring of the flexible curtain, the supporting frame is fixedly connected with the casing, and the lower part of the supporting frame forms the water receiving member; the driving device is connected to the supporting frame.

According to some embodiments of the disclosure, the air-conditioning indoor unit is provided with a water receiving tray, and a water guide plate is connected between the water receiving piece and the water receiving tray so as to discharge condensed water in the water receiving piece into the water receiving tray.

According to some embodiments of the present disclosure, the flexible curtain is a water resistant material.

According to some embodiments of the present disclosure, the apparatus further comprises a position detection sensor fixedly connected to the housing; and the detection object is fixedly connected with the flexible curtain, the detection object rotates along with the flexible curtain, and when the flexible curtain is positioned at a normal position or a soft wind position, the detection object is positioned in the detection range of the position detection sensor.

According to some embodiments of the present disclosure, the position detection sensors have two, the detection object is within a detection range of one of the position detection sensors when the flexible curtain is in a normal position; the detection object is within the detection range of the other of the position detection sensors when the flexible curtain is in the soft wind position.

According to some embodiments of the present disclosure, the position detection sensor is a photoelectric switch, and the detection object is a grating tooth.

Additional aspects and advantages of the disclosure 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 disclosure.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a perspective view of a closed state of an air conditioning indoor unit according to an embodiment of the present disclosure;

fig. 2 is a perspective view of an open state of an air conditioning indoor unit according to an embodiment of the present disclosure;

fig. 3 is a partially exploded view of an air conditioning indoor unit according to an embodiment of the present disclosure;

fig. 4 is a perspective view of a soft wind outlet device of an indoor unit of an air conditioner according to an embodiment of the present disclosure in a soft wind outlet state;

fig. 5 is a perspective view of a soft wind position of a soft wind outlet device of an indoor unit of an air conditioner according to an embodiment of the present disclosure;

fig. 6 is a perspective view of a normal position of a soft wind outlet device of an indoor unit of an air conditioner according to an embodiment of the present disclosure;

fig. 7 is a perspective view of a soft air outlet device of an indoor unit of an air conditioner according to an embodiment of the present disclosure in a normal air outlet state;

FIG. 8 is an exploded view of FIG. 5;

FIG. 9 is an exploded view of FIG. 6;

fig. 10 is an exploded view of a flexible curtain and a driving device of an air conditioning indoor unit according to an embodiment of the present disclosure;

fig. 11 is an assembly schematic diagram of a soft wind outlet device, a water guide plate and a water pan of an indoor unit of an air conditioner according to an embodiment of the disclosure;

in the above figures: 10. a housing; 11. an air inlet; 12. an air outlet; 20. a heat exchanger; 21. a fan; 22. a water pan; 30. a soft wind outlet device; 31. a flexible curtain; 311. micropores; 312. a soft wind outlet area; 313. a normal air outlet area; 314. a synchronous belt; 32. a motor; 331. a synchronizing wheel; 332. a first roller; 333. a second roller; 34. a support frame; 341. a water receiving member; 3411. a drain hole; 351. a position detection sensor; 352. a detection object; 40. a water guide plate; 50. a door panel; 60. and air guide blades.

Detailed Description

The invention is described in detail below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

Hereinafter, embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings.

The air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.

The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.

The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.

The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit of the air conditioner.

The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. The air conditioner is used as a heater in a heating mode when the indoor heat exchanger is used as a condenser, and as a cooler in a cooling mode when the indoor heat exchanger is used as an evaporator.

The present disclosure provides an embodiment of an indoor unit of an air conditioner, which may be any one of a wall-mounted type and a cabinet type. In the following description, the cabinet is mainly taken as an example, and other types can be referred to.

Fig. 1 is a perspective view of a closed state of an air conditioning indoor unit according to an embodiment of the present disclosure; fig. 2 is a perspective view of an open state of an air conditioning indoor unit according to an embodiment of the present disclosure; fig. 3 is a partially exploded view of an air conditioning indoor unit according to an embodiment of the present disclosure.

The indoor unit of an air conditioner includes a cabinet 10 having an air inlet 11 and an air outlet 12, a heat exchanger 20 performing heat exchange with air introduced into the cabinet 10, a blower 21 circulating air to the inside or outside of the cabinet 10, and a soft wind discharging device 30 discharging air in the form of a plurality of micro-holes 311.

The cabinet 10 may form an overall appearance of the air conditioning indoor unit, and may include a front panel forming the air outlet 12, a rear panel disposed behind the front panel, a pair of side panels having the air inlet 11 formed therein and disposed between the front panel and the rear panel, and a lower panel disposed below the pair of side panels. The air inlet 11 and the air outlet 12 are respectively provided in the side panel and the front panel. However, the embodiments of the present disclosure are not limited thereto.

The heat exchanger 20 is disposed inside the cabinet 10, and may be disposed on an air moving path from the intake opening 11 to the exhaust opening 12. The heat exchanger 20 serves to absorb heat from or transfer heat to air introduced into the intake vent 11. A drip tray 22 may be provided below the heat exchanger 20 to collect condensate that flows down the heat exchanger 20. The drain pan 22 may be connected to a drain pipe (not shown) connected to the outside of the cabinet 10, and may discharge the condensed water to the outside of the cabinet 10.

The blower 21 is disposed inside the cabinet 10. The blower 21 is used to blow air so that the air can flow from the air inlet 11 to the air outlet 12. The fan 21 may be an axial flow fan, a cross flow fan, or the like.

The indoor unit of the air conditioner may include a door panel 50 movably coupled to the cabinet 10, the door panel 50 opening/closing the outlet 12 and being movable between a closed position in which the door panel 50 closes the outlet 12 and an open position in which the door panel 50 opens the outlet 12.

The air conditioning indoor unit may include a guide vane 60, the guide vane 60 being disposed at the outlet port 12, the guide vane 60 also controlling a direction in which air blown from the fan 21 is discharged to the outside.

Fig. 4 is a perspective view of a soft wind outlet device of an indoor unit of an air conditioner according to an embodiment of the present disclosure in a soft wind outlet state; fig. 5 is a perspective view of a soft wind position of a soft wind outlet device of an air conditioning indoor unit according to an embodiment of the present disclosure.

The soft wind outlet device 30 is disposed inside the casing 10 corresponding to the wind outlet 12, and the air introduced from the wind inlet 11 flows through the soft wind outlet device 30 and then is discharged from the wind outlet 12. The soft wind discharging device 30 includes a flexible curtain 31, the flexible curtain 31 can cover the inner side of the wind outlet 12, the flexible curtain 31 has a soft wind outlet area 312 formed by a plurality of micro-holes 311, as shown in fig. 5, the plurality of micro-holes 311 can be distributed in the flexible curtain 31 to be spaced apart from each other by a predetermined distance, air is discharged from the plurality of micro-holes 311 when passing through the soft wind outlet area 312, and the micro-holes 311 break up the airflow, so that the air can be discharged to the outside of the air conditioning indoor unit at a low speed. From this, realize gentle wind effect, the user can not with wind direct contact, improved user's comfort level.

Moreover, in the related art, the soft wind is realized by arranging the micropores 311 on the wind guide blade 60 and the door panel 50, that is, when the door panel 50 is at the closed position, the air blown from the fan 21 is scattered through the micropores 311 on the door panel 50 and discharged to the outside, and such a way has the problems that the air conditioner structure is changed to be large, the manufacturing difficulty is large, and the user feels uncomfortable due to the fact that the micropores 311 are exposed outside; the air conditioner indoor unit only needs to arrange the soft wind outlet device 30 at the inner side of the air outlet 12, has simpler structure, can be directly used on a new machine type and can be additionally arranged on an old machine type; the soft wind outlet device 30 is not exposed outside the indoor unit of the air conditioner, so that discomfort of dense appearance is avoided.

In addition, the soft wind outlet device 30 of the air conditioning indoor unit is arranged at the inner side of the air outlet 12, and the structure of the air outlet 12 is not changed, so that the wind guide blades 60 at the air outlet 12 can still guide the air supply direction, and more use requirements of users can be met.

In some embodiments of the present disclosure, fig. 6 is a perspective view of a normal position of a soft wind outlet device of an air conditioning indoor unit according to an embodiment of the present disclosure; fig. 7 is a perspective view of the soft air outlet device of the indoor unit of the air conditioner according to the embodiment of the disclosure in a normal air outlet state. The soft wind outlet device 30 is rotatably connected inside the casing 10, and a normal wind outlet area 313 is further arranged on the flexible curtain 31, the normal wind outlet area 313 is formed by a large through hole, the normal wind outlet area 313 is opposite to the wind outlet 12, air can flow to the wind outlet 12 through the normal wind outlet area 313 without obstruction, and the normal wind outlet function of the air conditioner is realized.

Specifically, the flexible curtain 31 can move between a normal position and a soft wind position, and the normal wind outlet area 313 is opposite to the wind outlet 12 when the flexible curtain 31 is located at the normal position; the soft wind discharging area 312 covers the rear side of the wind outlet 12 when the soft curtain 31 is located at the soft wind position. According to the air conditioner indoor unit disclosed by the embodiment of the disclosure, normal air outlet or soft air outlet can be realized only by controlling the rotating position of the flexible curtain 31.

Referring to fig. 8-10, the soft wind outlet device 30 includes a driving device capable of driving the flexible curtain 31 to rotate, and specifically includes a motor 32 for providing a driving force, a roller connected to the motor 32, a timing wheel 331 disposed on the roller, and timing belts 314 disposed on two sides of the flexible curtain 31. The motor 32 drives the roller to roll, and the flexible curtain 31 rotates along with the roller through the cooperation of the synchronous wheel 331 and the synchronous belt 314.

The driving device according to the embodiment of the present disclosure is equivalent to a motor and a belt transmission, the roller includes a first roller 332 and a second roller 333 supported at two ends of the flexible curtain 31, the belt transmission can drive the flexible curtain 31 to rotate circularly between the first roller 332 and the second roller 333, so as to sequentially enable the flexible curtain 31 to be in a normal position or a soft wind position; in addition, the whole structure of the soft wind outlet device 30 is more compact through the transmission form of the synchronous belt 314 and the synchronous wheel 331.

Specifically, synchronizing wheel 331 and hold-in range 314 are connected through the teeth of a cogwheel between, and the meshing transmission of teeth of a cogwheel can be avoided when smooth belt transmission leads to the problem that flexible curtain 31 tension is too big and then reduce flexible curtain 31 life to the pretightning force requirement like this, and this air conditioning indoor set has the advantage that the reliability is high and long service life.

Specifically, the timing belt 314 and the flexible curtain 31 may be integrally injection molded, or connected in the form of ultrasonic welding or 3M tape bonding.

In some embodiments of the present disclosure, the soft wind outlet device 30 may include a supporting frame 34 surrounding the outer side of the flexible curtain 31 and fixedly connected to the housing 10, the first roller 332 and the second roller 333 are respectively connected to the upper end and the lower end of the supporting frame 34, and the motor 32 is fixedly connected to the supporting frame 32. Furthermore, the air conditioning indoor unit enables the soft air outlet device 30 to be an integral component through the arrangement of the supporting frame 34, realizes a modular structural design, and can facilitate the installation and the arrangement of the soft air outlet device 30 on the air conditioning indoor unit.

It should be noted that in the current embodiment, the flexible curtain 31 performs a vertical cyclic rotation, however, it can be understood by those skilled in the art that the flexible curtain 31 can also perform a horizontal cyclic rotation, i.e. the first roller 332 and the second roller 333 can be disposed at both ends of the support frame 34 in the horizontal direction.

In some embodiments of the present disclosure, two motors 32 are provided, and are respectively connected to two ends of the first roller 332, and the two motors 32 rotate synchronously, so that the roller 33 can roll smoothly and uniformly, and the problem of delayed rolling at the other end of the roller 33 caused by the fact that the motor 32 is connected to only one end when the roller 33 is long is also avoided.

In some embodiments of the present disclosure, condensation may be generated on the flexible curtain 31 when the air passing through the heat exchanger 20 is scattered and discharged by the flexible curtain 31, and therefore, the material of the flexible curtain 31 has good water resistance, water resistance and hydrophobicity, so that the condensed water does not damage the flexible curtain 31 and can flow down quickly. Referring to fig. 3 and 11, in order to prevent the condensed water on the flexible curtain 31 from dripping to affect other devices of the air conditioner, a water receiving member 341 is further disposed below the flexible curtain 31 for collecting the condensed water flowing down from the flexible curtain 31, a water receiving slot is disposed on the water receiving member 341 and located right below the flexible curtain 31, and the condensed water flows into the water receiving slot along the flexible curtain 31. In the current embodiment, the water receiving member 341 is a part of the support frame 34 and is integrally formed with the support frame 34, that is, a beam at the lower part of the support frame 34 may be used as the water receiving member 341, and the water receiving tank is disposed on the beam. However, the embodiment is not limited thereto, and those skilled in the art will appreciate that the water receiving member 341 may be a separate member.

A drain hole 3411 communicating with the water receiving tank may be provided in the water receiving member 341, a water guide plate 40 may be provided between the water receiving member 341 and the water receiving tray 22, and condensed water in the water receiving tank may flow into the water receiving tray 22 through the drain hole 3411 along with the water guide plate 40 and be discharged.

According to the air conditioner indoor unit of the embodiment of the disclosure, the water receiving piece 341 is arranged below the flexible curtain 31, the water guide plate 40 is arranged between the water receiving piece 341 and the water receiving tray 22, and then the condensed water on the flexible curtain 31 can fall into the water receiving piece 341 and flow into the water receiving tray 22 along the water guide plate 40, so that the influence of the condensed water on the internal components of the air conditioner is avoided, and the air conditioner indoor unit has the advantage of high reliability.

In some embodiments of the present disclosure, referring to fig. 8 and 9, the indoor unit of an air conditioner may include a position detecting device for detecting a position of the flexible curtain 31, and specifically includes a position detecting sensor 351 and a detecting object 352, the position detecting sensor 351 is connected to the supporting frame 34, the detecting object 352 is connected to the timing belt 314, the detecting object 352 rotates along with the flexible curtain 31, when the flexible curtain 31 is located at a normal position or a soft wind position, the detecting object 352 is located within a detection range of the position detecting sensor 351, and then the position detecting sensor 351 transmits a signal to a controller of the air conditioner, and the controller controls the motor 32, so that the flexible curtain 31 may be maintained at the normal position or the soft wind position. That is, the motor 32 rotates to rotate the flexible curtain 31, and when the position detection sensor 351 detects the detected object signal, the controller controls the motor 32 to stop rotating, so that the flexible curtain 31 is maintained at the current position.

Therefore, the relative position arrangement of the detection object 352 and the position detection sensor 351 is: when the flexible curtain 31 is located at the normal position or the soft wind position, the detection object 352 is within the detection range of the position detection sensor 351.

Based on the embodiment of the present disclosure, in order to distinguish whether the flexible curtain 31 is in the normal position or the soft wind position, the position detection sensors 351 are provided in two, respectively, as a first sensor and a second sensor, and the detection object 352 is located within the detection range of the first sensor when the flexible curtain 31 is in the normal position, that is, the position detection sensor 351 located at the lower side in fig. 9 is the first sensor, and the detection object 352 on the timing belt 314 rotates to the first sensor position; when the flexible curtain 31 is in the soft wind position, the detection object 352 is in the detection range of the second sensor, that is, the position detection sensor 351 located at the upper side in fig. 8 is the second sensor, and the detection object 352 on the timing belt 314 rotates to the second sensor position.

The working process of the position detection device comprises the following steps: when the air conditioner needs to work in a soft wind outlet mode, the motor 32 drives the roller to rotate, the synchronous belt 314 and the flexible curtain 31 rotate, and when the second sensor detects the detection object 352, the motor 32 stops and the flexible curtain 31 is kept at the soft wind position; when the air conditioner needs to work in a normal air outlet mode, the motor 32 continues to drive the roller to rotate, the synchronous belt 314 and the flexible curtain 31 rotate, when the first sensor detects the detection object 352, the motor 32 stops, and the flexible curtain 31 is kept at a normal position.

Specifically, the position detection sensor 351 may be a photoelectric switch, and the detection object 352 may be a grating tooth; of course, the position detection sensor 351 and the detection object 352 may be in other forms, such as a proximity switch and a metal object.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating 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 the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. An indoor unit of an air conditioner, comprising:

a case having an air outlet formed thereon;

the flexible curtain is rotatably connected to the inner side of the air outlet and is provided with a soft air outlet area and a normal air outlet area which are formed by a plurality of micropores; and

the driving device is connected with the flexible curtain to drive the flexible curtain to rotate;

when the flexible curtain rotates to a normal position where the normal air outlet area is opposite to the air outlet, air is sent out through the normal air outlet area; when the flexible curtain rotates to the soft wind position where the soft wind outlet area is opposite to the air outlet, the air is sent out of the soft wind through the soft wind outlet area.

2. An indoor unit of an air conditioner according to claim 1, wherein the driving means includes:

a roller including a first roller and a second roller supported at opposite ends of the flexible shade;

the motor is connected with the first rolling shaft or the second rolling shaft and used for providing driving force for the rolling shafts;

a synchronizing wheel provided on the roller, an

The hold-in range is located the both sides of flexible curtain, the hold-in range with synchronizing wheel cooperation transmission, so that flexible curtain is in first roller bearing with cycle rotation between the second roller bearing.

3. An indoor unit of an air conditioner according to claim 2, wherein the timing belt is integrally formed with the flexible curtain, or the timing belt is connected to the flexible curtain.

4. An indoor unit of an air conditioner according to claim 1, further comprising:

the water receiving piece is arranged below the flexible curtain and used for collecting condensed water flowing down from the flexible curtain, and the water receiving piece is fixedly connected with the machine shell.

5. An indoor unit of an air conditioner according to claim 4, further comprising:

the supporting frame is arranged around the outer ring of the flexible curtain and fixedly connected with the shell, and the lower part of the supporting frame forms the water receiving piece; the driving device is connected to the supporting frame.

6. An indoor unit of an air conditioner according to claim 4, wherein a water receiving tray is provided between the water receiving member and the indoor unit, and a water guide plate is connected between the water receiving member and the water receiving tray to drain condensed water in the water receiving member into the water receiving tray.

7. An indoor unit of an air conditioner according to claim 1, wherein the flexible curtain is made of a water-resistant material.

8. An indoor unit of an air conditioner according to claim 1, further comprising:

the position detection sensor is fixedly connected with the shell; and

the detection object is fixedly connected with the flexible curtain, the detection object rotates along with the flexible curtain, and when the flexible curtain is located at a normal position or a soft wind position, the detection object is located in the detection range of the position detection sensor.

9. An indoor unit of an air conditioner according to claim 8, wherein the position detection sensor has two, and the detection object is within a detection range of one of the position detection sensors when the flexible curtain is in the normal position; the detection object is within the detection range of the other of the position detection sensors when the flexible curtain is in the soft wind position.

10. An indoor unit of an air conditioner according to claim 8, wherein the position detecting sensor is a photoelectric switch, and the detection object is a grating tooth.