CN212719981U

CN212719981U - Indoor unit of air conditioner

Info

Publication number: CN212719981U
Application number: CN202021276258.1U
Authority: CN
Inventors: 曲明伟; 孙合庆
Original assignee: Hisense Shandong Air Conditioning Co Ltd
Current assignee: Hisense Air Conditioning Co Ltd
Priority date: 2020-07-02
Filing date: 2020-07-02
Publication date: 2021-03-16
Anticipated expiration: 2030-07-02

Abstract

The utility model provides an indoor unit of air conditioner belongs to air conditioning technology field. The air-conditioning indoor unit comprises: a housing, the housing comprising: the fresh air rear plate is arranged at the lower part of the shell, a purification air inlet and a purification air outlet are formed on the fresh air rear plate, and the purification air inlet is communicated with the purification air outlet to form a first air channel; the casing lower part is located to the decorative board, and the decorative board includes: the first pumping and inserting hole is provided with a purification module in a pumping and inserting manner, and the inner end of the purification module passes through the first pumping and inserting hole and is positioned in the first air channel and positioned at the inner side of the purification air inlet; hold the chamber, hold and take out the formula of inserting on the chamber and install the humidification module, hold and be equipped with the second on the chamber diapire and take out the jack, humidification module inner passes the second and takes out the jack and be located first wind channel. Through setting up the first jack of taking out, holding chamber and second and taking out the jack, will purify module and humidification module and take out the formula of inserting and install on the air conditioner for the air conditioner has purification and humidification function, can satisfy the diversified demand of user, adopts the setting mode of taking out the formula of inserting, makes things convenient for the dismouting.

Description

Indoor unit of air conditioner

Technical Field

The utility model belongs to the technical field of the air conditioner, especially, relate to an indoor unit of air conditioner.

Background

The air conditioner is common electrical apparatus in the life, and current air conditioner generally only has the function of refrigeration and heating, and the function is comparatively single, can not satisfy the diversified demand of user, influences user experience to, air quality is more and more poor at present, and people are more and more high to the demand of air purification product, and in the current product, can compromise air purification and refrigerate the product that heats less, and the effect is relatively poor.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. For this purpose,

according to an embodiment of the present disclosure, an air conditioner indoor unit is provided, including:

a housing, the housing comprising:

the fresh air rear plate is arranged at the lower part of the shell, a purification air inlet and a purification air outlet are formed in the fresh air rear plate, and the purification air inlet is communicated with the purification air outlet to form a first air channel;

the decorative board is located the casing lower part, the decorative board includes:

the first pumping and inserting hole is provided with a purification module in a pumping and inserting mode, and the inner end of the purification module penetrates through the first pumping and inserting hole and is positioned in the first air channel and positioned on the inner side of the purification air inlet;

the humidifying device comprises a containing cavity, wherein a humidifying module is installed on the containing cavity in a pulling and inserting mode, a second pulling and inserting hole is formed in the bottom wall of the containing cavity, and the inner end of the humidifying module penetrates through the second pulling and inserting hole and is located in a first air channel.

Through set up the first jack of taking out on the decorative board, will purify the module and take out the formula of inserting and install on the air conditioner, take out the jack through setting up chamber and second, take out the formula of inserting and set up on the air conditioner with the humidification module for the air conditioner not only has the refrigeration function of heating, still has purification and humidification function, and the function is more, can satisfy the diversified demand of user, adopts the mode of setting of taking out the formula of inserting, makes things convenient for the dismouting.

According to this disclosed embodiment, the first jack edge of taking out is equipped with first turn-ups, purification module includes:

the edge of the outer end of the purifying filter screen support is in lap joint with the first flanging;

and the purification filter screen is arranged on the purification filter screen bracket.

The purification module is arranged to be in lap joint with the first extraction and insertion hole, and has positioning and sealing functions.

According to an embodiment of the present disclosure, the humidification module includes:

the humidifying water box is provided with an elastic clamping groove, the decorating plate is provided with a clamping piece, and the clamping piece is matched with the elastic clamping groove;

the water tank is arranged in the humidifying water box;

the humidifying frame is arranged in the humidifying water box;

and the wet film is arranged on the humidifying rack.

Set up the elasticity draw-in groove on the humidification water box for the humidification water box is fixed on the decorative board, conveniently is located the dismouting.

According to the embodiment of the disclosure, a second flanging is arranged at the edge of the second drawing jack, a third flanging is arranged at the edge of the end part, close to the shell, of the humidifying frame, the third flanging is in lap joint with the second flanging, and the humidifying frame is in lap joint with the second drawing jack to play roles in positioning and sealing.

According to the embodiment of the disclosure, the number of the first drawing and inserting holes is two, and the accommodating cavity is located between the two first drawing and inserting holes, so that the arrangement is orderly and attractive.

According to the embodiment of the disclosure, the number of the second drawing and inserting holes is two, and the two second drawing and inserting holes are symmetrically arranged on the bottom wall of the accommodating cavity.

According to the embodiment of the disclosure, be equipped with on the first turn-ups and connect in the first support muscle of decorative board, can support first turn-ups, the first turn-ups of reinforcing intensity.

According to an embodiment of the present disclosure, the elastic card slot includes:

one end of the connecting arm is connected to the outer side wall of the humidifying water box;

the free arm is connected with the other end of the connecting arm, a groove is formed in the free arm, and the card is clamped in the groove.

According to the embodiment of the disclosure, the groove is provided with a side wall and a bottom wall, a protrusion is arranged on the card, and when the card is clamped into the groove, the protrusion abuts against the side wall of the groove.

According to the embodiment of the present disclosure, the accommodating cavity comprises a first side wall, the first side wall is matched with the humidifying water box, a second supporting rib is arranged on the first side wall, the humidifying water box is placed on the second supporting rib, friction force between the humidifying water box and the accommodating cavity can be reduced, and the accommodating cavity is convenient to draw and insert.

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 these drawings without creative efforts.

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

fig. 2 is a partial rear view of an air conditioning indoor unit according to an embodiment of the present disclosure;

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

fig. 4 is a partial structural schematic view of an air conditioning indoor unit according to an embodiment of the present disclosure;

fig. 5 is a schematic structural view of a decorative panel of an indoor unit of an air conditioner according to an embodiment of the present disclosure;

fig. 6 is a partial structural schematic view of an air conditioning indoor unit according to an embodiment of the present disclosure;

fig. 7 is a partial structural schematic view of an air conditioning indoor unit according to an embodiment of the present disclosure;

fig. 8 is a partial structural side view of an air conditioning indoor unit according to an embodiment of the present disclosure;

FIG. 9 is a cross-sectional view taken at A-A of FIG. 8;

FIG. 10 is an enlarged view of a portion of FIG. 9 at B;

FIG. 11 is an enlarged view of a portion of FIG. 9 at C;

fig. 12 is a partial structural schematic view of an air conditioning indoor unit according to an embodiment of the present disclosure;

FIG. 13 is an enlarged view of a portion of FIG. 12 at D;

fig. 14 is a sectional view of an air conditioning indoor unit according to an embodiment of the present disclosure;

FIG. 15 is an enlarged view of a portion of FIG. 14 at E;

fig. 16 is an exploded view of a partial structure of an air conditioning indoor unit according to an embodiment of the present disclosure;

fig. 17 is a schematic structural view of a filter module of an indoor unit of an air conditioner according to an embodiment of the present disclosure;

fig. 18 is a schematic structural view of a filter module of an indoor unit of an air conditioner according to an embodiment of the present disclosure;

fig. 19 is a schematic structural view of a fresh air back plate of an air conditioning indoor unit according to an embodiment of the disclosure;

fig. 20 is a partial sectional view of the connection between the filter module of the indoor unit of the air conditioner and the third drawing-inserting hole according to the embodiment of the present disclosure.

In the above figures: an indoor air-conditioning unit 100; a housing 1; a fresh air rear plate 11; a purified air inlet 111; a purge air outlet 112; a fresh air inlet 113; a third drawer jack 114; a fourth flange 1141; rail grooves 115; a first rail groove 1151; a second rail groove 1152; a buckle-avoiding slot 117; a decorative panel 12; a first drawing and inserting hole 121; a first flange 1211; a first support rib 1212; a housing cavity 122; a second extraction and insertion hole 1221; a second flange 1222; a first sidewall 1223; second support ribs 1224; a card 123; a protrusion 1231; a first air duct 13; a first air outlet 14; an air deflector 2; a purification module 3; a purification screen bracket 31; a volute fan 4; a humidifying module 5; a water tank 51; a humidifying water box 52; a tank 521; a humidifying rack groove 522; an elastic card slot 523; a connecting arm 5231; a free arm 5232; a groove 5233; a humidifying rack 53; a third flange 531; a door panel 6; a filtration module 7; a handle 71; a handle 711; a filter frame 72; a first interval 721; a first limit bead 73; and a second limit bead 74.

Detailed Description

The present invention is specifically described 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.

An air conditioning indoor unit according to an embodiment of the present invention will be described below with reference to fig. 1 to 20, which are in the form of a cabinet unit, and fig. 1 is a perspective view of the air conditioning indoor unit according to the embodiment of the present disclosure.

The indoor unit of the air conditioner is provided with a purification module, a fresh air module and a heat exchange module, wherein the purification module and the fresh air module are positioned at the lower part of the indoor unit of the air conditioner, the heat exchange module is positioned at the upper part of the indoor unit of the air conditioner, the purification module is used for purifying air, and the fresh air module is used for being communicated with the outdoor space and introducing outdoor air.

The indoor unit of the air conditioner can comprise a casing 1, the casing 1 can be approximately cylindrical, a heat exchange air inlet and a heat exchange air outlet are formed in the casing 1, the heat exchange air inlet is formed in the rear side or the left side and the right side under normal conditions, and the heat exchange air outlet is formed in the front side.

It should be noted that the shape of the housing 1 may also be roughly an elliptic cylinder or a square cylinder; the front side is the side of the air-conditioning indoor unit facing the user when in use, and the opposite side is the rear side.

Of course, the casing 1 may be composed of a front casing and a rear casing, in general, the front casing is a casing on a side of the indoor unit of the air conditioner facing a user, the casing on a side opposite to the front casing is a rear casing, the heat exchange air inlet is located on the rear casing, and the heat exchange air outlet is located on the front casing.

The heat exchange air inlet and the heat exchange air outlet are communicated to form a heat exchange air channel, a heat exchanger is arranged in the heat exchange air channel and is arranged between the heat exchange air inlet and the heat exchange air outlet, a heat exchange fan can be arranged in the heat exchange air channel, indoor air flow is led into the indoor unit of the air conditioner through the heat exchange air inlet by the heat exchange fan, and then the indoor air flow is sent out through the heat exchange air outlet through the heat exchanger, so that the refrigerating/heating function of.

Referring to fig. 1-3, the housing 1 includes a fresh air rear plate 11 and a decorative plate 12, the fresh air rear plate 11 and the decorative plate 12 are disposed at a lower portion of the housing 1, a purification air inlet 111 and a purification air outlet 112 are formed on the fresh air rear plate 11, and the purification air inlet 111 and the purification air outlet 112 are communicated to form a first air duct 13. The purification air inlet 111 can be provided with an air deflector 2 for guiding air into the air-conditioning indoor unit, the air deflector can rotate to change the air guiding direction, and the air deflector 2 is provided with a driving mechanism for driving the air deflector 2 to rotate.

Referring to fig. 4-11, the indoor unit 100 of the air conditioner includes a purification module 3, a first suction hole 121 is provided on the decorative plate 12, the first suction hole 121 is matched with the purification module 3, the purification module 3 is installed on the first suction hole 121 in a suction manner, the inner end of the purification module 3 passes through the first suction hole 121 and is located in the first air duct 13, and is located inside the purification air inlet 111, and is used for purifying the air entering from the purification air inlet 111, the purification module 3 includes a purification Filter screen bracket 31 and a purification Filter screen provided on the purification Filter screen bracket 31, and the purification module may be a High efficiency particulate air Filter (HEPA) module. The edge of the first suction hole 121 is provided with a first flange 1211, the edge of the outer end of the purification filter screen support 31 is in lap joint with the first flange 1211 to play a role in sealing and limiting, and the first flange 1211 is provided with a first support rib 1212 connected to the decorative plate for supporting and enhancing the strength of the first flange 1211.

The indoor unit of the air conditioner further comprises a volute fan 4, the volute fan 4 is arranged in the first air duct 13, air enters the first air duct 13 from the purification air inlet 111, is filtered by the purification module 3 and then is sent out from the purification air outlet by the volute fan 4, so that the purification function of the indoor unit of the air conditioner is realized, and referring to fig. 4, a path for circulation of the air conditioner is indicated by a dotted line and an arrow.

The fresh air rear plate 11 is arranged at the rear side of the air-conditioning indoor unit, the decorative plate 12 is arranged at the front side of the air-conditioning indoor unit, and the purification air outlet 112 is arranged at the rear side of the air-conditioning indoor unit, so that the aim of preventing people from being exposed to the air can be fulfilled.

Specifically, the purification air inlets 111 and the purification air outlets 112 may be respectively provided with two purification air inlets 111 symmetrically disposed on the fresh air rear plate 11, and two purification air outlets 112 symmetrically disposed on the fresh air rear plate, wherein the purification air outlets 112 may be disposed above the purification air inlets 111. The quantity of purification module 3 corresponds with the quantity that purifies air intake 111, is convenient for filter the air, and is corresponding, in order to adapt to purification module 3, first jack 121 also sets up to two, and two first jacks 121 symmetry are located on decorative board 12.

Referring to fig. 6, a first air outlet 14 is further formed on the casing 1, the first air outlet 14 communicates the first air duct 13 with the heat exchange air duct, wherein the first air outlet 14 may be disposed at an upper portion of the volute blower 4, a part of the filtered air enters the room through the purifying air outlet 112, and another part of the filtered air enters the heat exchange air duct through the first air outlet 14 and is sent out through the heat exchange air outlet, so that the air blown out from the heat exchange air outlet is partially purified.

The fresh air rear plate 11 can also be formed with a fresh air inlet 113 for introducing outdoor air into the air-conditioning indoor unit, wherein the fresh air inlet 113 can be positioned between the two purifying air inlets 111, the fresh air inlet 113 is communicated with the first air duct 13, the air entering through the fresh air inlet enters the indoor through the fresh air outlet after being filtered by the purifying module, and when the first air outlet 14 is arranged, the air enters the indoor through the fresh air outlet and the heat exchange air outlet.

The indoor unit of the air conditioner can further comprise a humidifying module 5, the decorative plate 12 is provided with a containing cavity 122, the containing cavity 122 is matched with the humidifying module 5, and the humidifying module 5 is installed on the containing cavity 122 in a pulling and inserting mode.

Referring to fig. 7 to 12, the humidification module 5 includes a water tank 51, a humidification water box 52, a humidification frame 53 and a wet film, the wet film is disposed on the humidification frame 53, the humidification frame 53 and the water tank 51 are disposed in the humidification water box 52, the humidification water box 52 includes a water tank channel 521 and a humidification frame channel 522, the water tank channel 521 is communicated with the humidification frame channel 522, so that water in the water tank 51 flows into the water tank channel and then flows into the humidification frame channel 522, and is absorbed by the wet film disposed on the humidification frame, so as to humidify air in the air conditioning indoor unit, wherein the humidification frame channel 522 is disposed on one side of the water tank channel 521, specifically, the humidification module 5 includes two humidification frames 53, and accordingly, the humidification water box 52 is provided with two humidification frame channels 522, wherein the two humidification frame channels 522 are disposed on two ends of one side of the water tank channel, and the two humidification frame channels 522 are symmetrically disposed with respect to the water tank channel 521.

Hold and be equipped with the second on the chamber 122 diapire and take out jack 1221, humidification module 5 the inner is passed the second and is taken out jack 1221 and be located in the first wind channel, it is specific, the inner of humidification water box 52 and humidification frame 53 passes second jack 1221 and is located first wind channel, when humidification frame 53 has two, the second is taken out jack 1221 and is had two, and two second are taken out jack 1221 symmetry and are located and hold on the chamber diapire.

The edge of the second drawing and inserting hole 1221 is provided with a second flange 1222, the edge of the end part of the humidifying rack 53 close to the housing is provided with a third flange 531, and the second flange and the third flange are overlapped to play a role in sealing and limiting.

Referring to fig. 12-15, the two end faces of the humidifying water box 52 are provided with elastic clamping grooves 523, the decorative plate 12 is provided with a clamping piece 123, the clamping piece is matched with the elastic clamping groove, so that the decorative plate is clamped with the elastic clamping groove, the elastic clamping groove 523 comprises a connecting arm 5231 and a free arm 5232, one end of the connecting arm 5231 is connected to the outer end wall of the humidifying water box, the other end of the connecting arm is connected with the free arm 5231, the free arm 5232 is provided with a groove 5233, the clamping piece 123 is clamped into the groove, so that the humidifying water box is fixed on the decorative plate, and the limiting and fixing effects are achieved. The groove is provided with a side wall and a bottom wall, a protrusion 1231 is arranged on the clamping piece 123, and when the decorative plate is clamped into the groove, the protrusion 1231 is abutted to the side wall of the groove.

The number of the purification modules 3 can be two, correspondingly, the number of the first drawing holes 121 can be two, and when the number of the first drawing holes is two, the accommodating cavity 122 is located between the two first drawing holes 121, so that the arrangement is orderly and attractive.

Referring to fig. 5, the accommodating chamber may further include a first side wall 1223, the first side wall 1223 is engaged with the bottom wall of the humidifying water box 52, the first side wall is provided with a second supporting rib 1224, and the humidifying water box is placed on the second supporting rib 1224, so that the friction force between the humidifying water box and the accommodating chamber can be reduced, and the accommodating chamber is convenient to disassemble and assemble.

Referring to fig. 1 and 6, the indoor unit of the air conditioner further comprises a door panel 6, the door panel 6 is installed on the casing 1, the door panel 6 covers the purification module and the humidification module to achieve a protection effect, the door panel 6 is detachably connected with the casing, and is convenient to detach and maintain, and after the door panel is detached, the purification module and the humidification module can be replaced and cleaned. The decorative plate can be designed into an arc shape to improve the integral aesthetic property of the indoor unit of the air conditioner, and the corresponding door plate 6 can also be designed into an arc shape to be adaptive to the decorative plate.

Referring to fig. 6 and 16-20, the indoor unit of the air conditioner further includes two filter modules 7, where the filter modules 7 are disposed at the purification air inlet 111, and can filter substances such as large particles, floccules, and dust, so as to avoid entering the inside of the air conditioner and affecting the indoor unit of the air conditioner, and can effectively play a role in dust prevention, and the two filter modules 7 are symmetrically disposed on the fresh air rear plate 11. The fresh air rear plate 11 is provided with a third suction hole 114, the third suction hole is longitudinally arranged along the casing, the third suction hole 114 is matched with the filter module 7, the filter module 7 is mounted on the third suction hole 114 in a suction-insertion manner, the inner end of the filter module 7 penetrates through the third suction hole 114 to be located in the first air duct 13 and is located inside the purification air inlet 111, and the purification air inlet 111 is used for purifying air entering the purification air inlet 111. Through setting up the installation of filter module formula of inserting of drawing out on the new trend back plate, can direct dismouting, need not to dismantle other structures during the dismouting, dismantle simple and conveniently.

The filtering module 7 comprises a handle 71, a filtering rack 72 and a filtering net arranged on the filtering rack 72, a fourth flanging 1141 is arranged at the edge of the third pumping hole 114, and the handle 71 is lapped with the fourth flanging 1141 to play a role in sealing and limiting.

The new trend back plate inboard is equipped with guide rail groove 115, what filter module took out the formula of inserting installs at guide rail inslot 115, the both ends in guide rail groove 115 are connected in the both sides that purify air intake 111, and take out the jack intercommunication with the third, make filter module cover in purifying the air intake inboard, can be to purifying the filtration that the wind of air intake entering is wider, strengthen the filter effect, the guide rail groove can be the arc wall, be convenient for take out and insert filter module, be located and install filter module, the filter frame can be the arc frame, and certain elasticity has, can adapt to arc guide rail groove.

The guide rail groove 115 comprises a first guide rail groove 1151 and a second guide rail groove 1152, the first guide rail groove 1151 is connected to two ends of the purification air inlet, the first guide rail groove 1151 is connected to the middle of the purification air inlet, the second guide rail groove 1151 is provided with a bottom wall, the filter frame 72 is provided with a first interval 721, and the first interval 721 is matched with the bottom wall of the second guide rail groove 1151.

The filter module 7 further comprises a first limiting convex rib 73 and a second limiting convex rib 74 which are used for limiting the position of the filter module, the first limiting convex rib 73 and the second limiting convex rib 74 are arranged on two sides of the filter frame, the filter module is inserted into the third drawing slot, the first limiting convex rib 73 and the second limiting convex rib 74 are far away from the end part of the filter frame and abut against the inner side of the fresh air rear plate, and the filter module 7 is prevented from being separated from the third drawing slot. And the first limiting convex rib 73 is arranged at the joint of the handle 71 and the filter frame 72, plays a role in supporting and is used for enhancing the strength of the second joint of the handle 71 and the filter frame 72.

The middle of the handle 71 is provided with a handle 711 which is convenient to detach, and the fresh air rear plate is provided with a handle avoiding groove 117 which is convenient to grab and detach.

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 merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, 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 is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning 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 protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

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

a housing, the housing comprising:

2. The indoor unit of claim 1, wherein the first suction hole has a first flange at an edge thereof, and the purification module comprises:

3. An indoor unit of an air conditioner according to claim 1, wherein the humidification module includes:

the water tank is arranged in the humidifying water box;

the humidifying frame is arranged in the humidifying water box;

and the wet film is arranged on the humidifying rack.

4. An indoor unit of an air conditioner according to claim 3, wherein a second flange is provided at an edge of the second draw-out jack, and a third flange is provided at an end edge of the humidifying rack near the casing, and the third flange overlaps the second flange.

5. An indoor unit of an air conditioner according to claim 1, wherein the first drawing and inserting hole has two, and the accommodation chamber is located between the two first drawing and inserting holes.

6. An indoor unit of an air conditioner according to claim 1, wherein the number of the second drawing and inserting holes is two, and the two second drawing and inserting holes are symmetrically arranged on the bottom wall of the accommodating cavity.

7. An air conditioning indoor unit according to claim 2, wherein the first flange is provided with a first support rib connected to the decorative plate.

8. An indoor unit of an air conditioner according to claim 3, wherein the elastic catching groove includes:

9. An indoor unit of an air conditioner according to claim 8, wherein the groove has a side wall and a bottom wall, and a protrusion is provided on the card, and when the card is inserted into the groove, the protrusion abuts against the side wall of the groove.

10. An indoor unit of an air conditioner according to claim 3, wherein the accommodating chamber includes a first side wall, the first side wall is engaged with the humidifying water box, a second support rib is provided on the first side wall, and the humidifying water box is placed on the second support rib.