CN209147239U - Air conditioner indoor unit - Google Patents

Abstract

The utility model provides a kind of air conditioner indoor unit, the shell of air outlet and the discharge pipe in air outlet are formed with including front side, discharge pipe includes the outer tube and to be connected to outer tube wall from the front to the back be in that gradual-enlargement type extends to the first inner tube protruded from front side of outer tube that front and back extends, and first the outlet air end of inner tube protrude from the front side of air outlet, the first clearance space is formed between outer tube internal perisporium and the first inner tube periphery wall, so that fraction is blown out forward from the first inner tube, fraction is blown out forward from the first clearance space, to expand wind-out range, and air-flow is spread to surrounding on front side of the corresponding air outlet of indoor unit, volume inhales surrounding air flow forward, improve air-supply uniformity, so that wind is softer, it is natural, feel cool without cold when blowing on the person, promote user's comfort.

Description

Air conditioner indoor unit

Technical field

The utility model relates to family's electro-technical fields, more particularly to a kind of air conditioner indoor unit.

Background technique

Existing wall-hanging indoor unit of air conditioner generally uses a cross flow fan and bendable heat exchanger to an air outlet Air-supply, blowing range is limited, and air supply pattern is fixed, is not flexible, it is difficult to meet the comfort and diversity requirement of user.

Summary of the invention

In view of the above problems, a purpose of the utility model is to provide for one kind and overcomes the above problem or at least partly The air conditioner indoor unit that ground solves the above problems.

The utility model one is further objective is that promote the wind-out range and air-supply comfort of indoor unit.

The utility model provides a kind of air conditioner indoor unit, comprising:

Shell, front side are formed with air outlet；

Discharge pipe is located in air outlet, and discharge pipe includes the outer tube and be connected to outer tube wall from the front to the back that front and back extends The first inner tube protruded from front side of outer tube is extended in gradual-enlargement type, the first inner tube air intake, which is located in outer tube, closes on outer tube front end Position, and the outlet air end of the first inner tube protrudes from the front side of air outlet；

The first clearance space is formed between outer tube internal perisporium and the first inner tube periphery wall, so that fraction is out of first It is blown out forward in pipe, fraction is blown out forward from the first clearance space, to expand wind-out range.

Optionally, discharge pipe further includes the second inner tube, and the second inner tube extends in gradual-enlargement type from the front to the back in the first inner tube, And second forms the second clearance space between outer wall of inner tube and the first inner tube wall so that fraction from the first inner tube to Front side blowout, from the second clearance space, side is blown out fraction forward, and side is blown out fraction forward from the second inner tube.

Optionally, outer tube internal perisporium includes the rear wall section successively to connect on from outer tube air intake to outlet air extreme direction and antetheca Section, the first inner tube air intake are located in the space that front wall segments are constituted, to form the between front wall segments and the first inner tube periphery wall One clearance space；

Rear wall section is by the truncated hollow cone of outer tube air intake flaring forward, and front wall segments are the position by connecting with rear wall section To the truncated hollow cone of outer tube outlet air end flaring；And

The cone angle of rear wall section is greater than the cone angle of front wall segments.

Optionally, the first inner tube is uniform wall thickness, from its air intake to the truncated hollow cone of outlet air end flaring；

And first inner tube cone angle be greater than front wall segments cone angle.

Optionally, the second inner tube periphery wall is the truncated cone shape of flaring from the front to the back, and the second inner tube internal perisporium is by second Truncated cone shape from pipe air intake to outlet air end flaring, and the cone angle of the second inner tube internal perisporium be greater than the second inner tube periphery wall cone angle；

And second inner tube periphery wall cone angle be equal to front wall segments cone angle.

Optionally, the cone angle 2c of the front wall segments of outer tube meets: 0 ° < 2c≤40 °；

The cone angle 2b of first inner tube meets: 20 °≤2b≤80 °.

Optionally, the cone angle 2d of the second inner tube internal perisporium meets: 30 °≤2d≤60 °.

Optionally, air outlet is two, one of them is located at shell forward upper, another is located at shell lower front, It is denoted as upper air outlet positioned at the air outlet of shell forward upper, is denoted as lower air outlet positioned at the air outlet of shell lower front；

Discharge pipe is two, and one of discharge pipe is located at the top of another discharge pipe, the discharge pipe being located above with it is upper Air outlet is corresponding, and underlying discharge pipe is corresponding with lower air outlet.

Optionally, air conditioner indoor unit further include:

Two Air Blast fans, one of Air Blast fan are configured to that fraction is promoted to go out from air inlet area to what is be located above It is flowed at air hose, so that side is blown out discharge pipe of the fraction through being located above forward；Another Air Blast fan is configured to promote Make fraction to flowing at underlying discharge pipe, so that fraction is side-blown forward through underlying discharge pipe Out.

Optionally, shell includes the open rear shell in front side and is formed before an accommodation space on front side of rear shell with rear shell Plate；

Air outlet is formed in front panel.

The air conditioner indoor unit of the utility model, by the discharge pipe for adding special structure at air outlet, it is possible to increase outlet air Range realizes wide area air-supply effect；And air-flow is spread to surrounding on front side of the corresponding air outlet of indoor unit, volume inhales surrounding air Flow forward improves air-supply uniformity so that wind it is softer, naturally, feeling cool without cold when blowing on the person, promote user Comfort；In addition, a part of air-flow is directly blown out forward from the first inner tube, another portion since air-flow is separated into two parts Divide air-flow directly to blow out forward from the first clearance space, effectively reduce eddy current loss, promotes air supply efficiency.

Further, in the air conditioner indoor unit of the utility model, the shape of the outer tube of discharge pipe, the first inner tube and the second inner tube Shape meets special construction, realizes preferably air-supply effect, and further promotes air-supply uniformity and promote air supply efficiency.

Further, in the air conditioner indoor unit of the utility model, there is two air outlets being distributed up and down, upper air outlet It is mutually set off with lower air outlet, an air outlet visually lofty property of bring is avoided, so that indoor unit monnolithic case is more It is harmonious, beautiful, meet the higher aesthetic requirement of user；Also, there are two Air Blast fans for air conditioner indoor unit tool, have relative to tradition There is the air conditioner indoor unit of an Air Blast fan, using two relatively small Air Blast fans of size, convenient for more reasonably distributing The interior accommodating space of indoor unit reduces the overall volume and thickness of air conditioner indoor unit；Furthermore two Air Blast fans can be independently Controlled operation, convenient for controlling the unlatching of different Air Blast fans respectively according to air conditioner indoor unit difference operational mode, so as to be promoted Cooling and warming experience.

According to the accompanying drawings to the detailed description of the utility model specific embodiment, those skilled in the art will be more Add the above-mentioned and other purposes, advantages and features of clear the utility model.

Detailed description of the invention

Some specific realities of the utility model are described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter Apply example.Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that The drawings are not necessarily drawn to scale.In attached drawing:

Fig. 1 is the outline structural diagram according to the air conditioner indoor unit of the utility model one embodiment；

Fig. 2 is the schematic diagram of internal structure according to the air conditioner indoor unit of the utility model one embodiment, wherein is concealed Front panel, to show indoor unit internal structure；

Fig. 3 is the schematic knot according to a direction of the discharge pipe of the air conditioner indoor unit of the utility model one embodiment Composition；

Fig. 4 is the diagrammatic cross-section according to the discharge pipe of the air conditioner indoor unit of the utility model one embodiment；

Fig. 5 is the decomposition diagram according to the air conditioner indoor unit of the utility model one embodiment；And

Fig. 6 is the schematic diagram according to the pod of the air conditioner indoor unit of the utility model one embodiment.

Specific embodiment

The air conditioner indoor unit of the utility model embodiment is described referring to Fig. 1 to Fig. 6.Wherein, "front", "rear", The orientation or positional relationship of the instructions such as "upper", "lower", "inner", "outside", " transverse direction " is that orientation based on the figure or position are closed System, is merely for convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning are necessary It with specific orientation, is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.

Fig. 1 is according to the schematic diagram of the air conditioner indoor unit 10 of the utility model one embodiment, and Fig. 2 is according to this The schematic diagram of internal structure of the air conditioner indoor unit 10 of utility model one embodiment, wherein front panel 12 has been concealed, to show room Interior 10 internal structure of machine.

As depicted in figs. 1 and 2, the air conditioner indoor unit 10 of the present embodiment is wall-hanging air conditioner indoor unit, including front side is formed There are the shell of air outlet and the discharge pipe 18 of front and back extension.Wherein, air outlet can be one or two, if air outlet is two, Then an air outlet is formed in shell forward upper, is denoted as air outlet 12a, and another air outlet is formed in shell lower front, It is denoted as lower air outlet 12b.Correspondingly, discharge pipe 18 and air outlet correspond, and discharge pipe 18 can be one or two.Wherein, Front-rear direction direction as shown in Figure 1.

Machine 10 has in the embodiment of both of the aforesaid air outlet indoors, and discharge pipe 18 is two, with two air outlets one One is corresponding, and one of discharge pipe 18 is located at the top of another discharge pipe 18, the discharge pipe 18 being located above and upper air outlet 12a Corresponding, underlying discharge pipe 18 is corresponding with lower air outlet 12b.

Shell is also formed with air inlet area 11a, and air conditioner indoor unit 10 further includes Air Blast fan, and Air Blast fan is configured to promote outer Portion's air-flow enters in shell from air inlet area 11a to be flowed to from corresponding air outlet so that air-flow from corresponding discharge pipe 18 to Preceding blowout.

Machine 10 has in the embodiment of both of the aforesaid air outlet indoors, and Air Blast fan is two, in two Air Blast fans An Air Blast fan be configured to promote fraction from air inlet area 11a to accommodation space upper flow so that the part gas It flows and is blown out from the discharge pipe 18 being located above, another Air Blast fan is configured to promote fraction from area 11a is entered the wind to receiving Space lower flow, so that the fraction is blown out from underlying discharge pipe 18.

Fig. 3 is the signal according to a direction of the discharge pipe 18 of the air conditioner indoor unit 10 of the utility model one embodiment Property structure chart, Fig. 4 is the diagrammatic cross-section according to the discharge pipe 18 of the air conditioner indoor unit 10 of the utility model one embodiment.

As shown in figure 3, discharge pipe 18 includes the outer tube 181 and be connected to 181 internal perisporium of outer tube from the front to the back that front and back extends The first inner tube 182 for protruding from 181 front side of outer tube is extended in gradual-enlargement type, 182 air intake of the first inner tube is located in outer tube 181 and faces The position of nearly 181 front end of outer tube, and 182 outlet air end of the first inner tube protrudes from front side of corresponding air outlet, 181 internal perisporium of outer tube with The first clearance space 103 is formed between first inner tube, 182 periphery wall, in other words, the first inner tube 182 is from the front to the back in horn-like Structure, outer tube 181 and the first inner tube 182 constitute a back-shaped pipe, air-flow are divided into two parts, a part of air-flow is through the first inner tube 182 inner space flow forward, another part air-flow can effectively reduce vortex through 103 flow forward of the first clearance space Loss promotes air supply efficiency.

In the embodiment for being two for discharge pipe 18, the first inner tube 182 of discharge pipe 18 corresponding with upper air outlet 12a Outlet air end protrudes from the front side of air outlet 12a, and the first inner tube 182 of discharge pipe 18 corresponding with lower air outlet 12b protrudes from The front side of lower air outlet 12b.

Relative to traditional air outlet, in the present embodiment, discharge pipe 18 is added by setting in air outlet, discharge pipe 18 is set It is calculated as foregoing back-shaped structure, and 182 outlet air end of the first inner tube of discharge pipe 18 is made to protrude from corresponding air outlet Front side, it is possible to increase wind-out range realizes wide area air-supply effect；And make air-flow to surrounding on front side of the corresponding air outlet of indoor unit 10 Diffusion, volume inhale surrounding air flow forward, improve air-supply uniformity so that wind it is softer, naturally, feeling when blowing on the person It is cool without cold, promote user's comfort.

In some embodiments, each discharge pipe 18 further includes the second inner tube 183, and the second inner tube 183 is corresponding first Extend from the front to the back in gradual-enlargement type in inner tube 182, and 183 periphery wall of the second inner tube and corresponding first inner tube, 182 internal perisporium it Between be formed with the second clearance space 104, air-flow is divided into three parts, fraction is side-blown forward from the first clearance space 103 Out, from the second clearance space 104, side is blown out fraction forward, and side is blown out fraction forward from the second inner tube 183, thus Further expansion wind-out range, and air-flow is more dispersedly blown out forward, so that the indoor ring of the air-flow of blowout and surrounding Border air-flow is mixed, and air-supply uniformity and comfort are further promoted.

First inner tube 182 is connected to the internal perisporium of outer tube 181 by bracket (being not shown in Fig. 4), and the second inner tube passes through another One bracket (being not shown in Fig. 4) is connected to 182 internal perisporium of the first inner tube, and bracket, which plays, fixes the first inner tube 182 and the second inner tube 183 effect, and size is smaller, avoids forming blocking to air-flow flow forward.For example, 182 periphery wall of the first inner tube is circumferentially Direction is intervally distributed with multiple first connecting rod (not shown), and multiple first connecting rod constitutes aforementioned brackets, passes through the interval First inner tube 182 is fixed on outer tube by multiple first connecting rods of distribution.Correspondingly, 183 periphery wall of the second inner tube is distributed with Multiple second connecting rod (not shown), multiple second connecting rod constitute aforementioned another bracket, by this be spaced apart it is multiple Second inner tube 183 is fixed in the first inner tube 182 by the second connecting rod.

In some embodiments, as shown in figure 4,181 internal perisporium of outer tube of each discharge pipe 18 includes entering the wind from outer tube 181 The rear wall section 181a and front wall segments 181b successively to connect on end to outlet air extreme direction, rear wall section 181a are by 181 air intake of outer tube The truncated hollow cone of flaring forward, front wall segments 181b are from the position that connects with rear wall section 181a to 181 outlet air end flaring of outer tube Truncated hollow cone, and the cone angle 2e of rear wall section 181a be greater than front wall segments 181b cone angle 2c.It also is understood as, outer tube 181 Internal perisporium is separated into two sections by 181 rear end of outer tube to front end, respectively rear wall section 181a and front wall segments 181b, rear wall section 181a Horn-like in flaring from the front to the back, front wall segments 181b is in the horn-like of flaring from the front to the back, and rear wall section 181a flaring journey Degree is greater than front wall segments 181b.As shown in figure 4, angle e is rear wall section 181a wall surface and the horizontal angle that front and back extends, rear wall Section 181a cone angle is 2e；Angle c is front wall segments 181b wall surface and the horizontal angle that front and back extends, front wall segments 181b cone angle As 2c.

First inner tube, 182 air intake is located in the space of front wall segments 181b composition, in front wall segments 181b and the first inner tube The first clearance space 103 is formed between 182 periphery walls, guarantees that air-flow enters in outer tube 181, first in the rear wall section of outer tube 181 Mixing combing is carried out in 181a, flows blow out along different flow paths further along, reduces eddy current loss.First inner tube, 182 air intake ( Be 182 rear end of the first inner tube) rear end front wall segments 181b away from outer tube 181 with (that is to say outer tube 181 away from the front end front wall segments 181b Outlet air end) distance it is roughly the same.

In some embodiments, the first inner tube 182 is uniform wall thickness, from its air intake to the hollow frustum of outlet air end flaring Shape, and the cone angle 2b of the first inner tube 182 is greater than the cone angle 2c of the front wall segments 181b of outer tube 181, also is understood as, the first inner tube 182 is horn-like in flaring by its rear end to front end.

In some embodiments, the second inner tube 183 of discharge pipe 18 is in corresponding first inner tube 182 from the front to the back in gradually Expansion formula extends, it is to be understood that the second inner tube 183 is in the loudspeaker of flaring in the first inner tube 182 from the front to the back Shape, 183 periphery wall of the second inner tube are the truncated cone shape of flaring from the front to the back.Second inner tube, 183 internal perisporium be by the second inner tube 183 into Wind end is to the truncated cone shape of outlet air end flaring, and in other words 183 internal perisporium of the second inner tube is in the truncated cone shape of flaring from the front to the back.Second The cone angle 2d of 183 internal perisporium of inner tube is greater than the cone angle 2a of 183 periphery wall of the second inner tube, and the cone angle 2a etc. of the second inner tube periphery wall In the cone angle 2c of the front wall segments 181b of outer tube 181.

By the way that 181 internal perisporium of outer tube is limited to structure as above, the first inner tube 182, the shape of the second inner tube 183 are limited For structure as above, between the first clearance space 103 (space between outer tube 181 and the first inner tube 182) thus limited, second Every the space in space 104 (space between the first inner tube 182 and the second inner tube 183) and the second inner tube 183 to air-flow into Row shunts, and while expanding wind-out range, is further reduced eddy current loss, improves air supply efficiency；And make outlet air softer Uniformly.

In some embodiments, the cone angle 2c of front wall segments 181b meets: 0 ° < 2c≤40 °, the cone angle 2e of rear wall section 181a is full Foot: 0 ° < 2e≤50 °, for example, the cone angle 2c of front wall segments 181b is 7.8 °, the cone angle 2e of rear wall section 181a is 46.2 °.Some In embodiment, the cone angle 2b of the first inner tube 182 can meet: 20 ° < 2b≤80 °, the cone angle 2d of 183 internal perisporium of the second inner tube can expire Foot: 30 ° < 2d≤60 °, for example, the cone angle 2b of the first inner tube 182 is 60 °, the cone angle 2d of 183 internal perisporium of the second inner tube is 45 °. The discharge pipe 18 being consequently formed can further reduce eddy current loss, improve air supply efficiency.

In some embodiments, shell is projected as circle, upper air outlet in the perpendicular of carrying air conditioner indoor unit 10 12a and lower air outlet 12b is circle in the projection of vertical plane, so that 10 unique outlook of entire air conditioner indoor unit is beautiful, completely Different from the wall-hanging air conditioner indoor unit 10 of existing strip, meet the personalized aesthetic requirement of user.

The air conditioner indoor unit 10 of similar shape all has an air outlet and an Air Blast fan in existing scheme, to meet The air-supply demand of air conditioner indoor unit 10, Air Blast fan power is larger, and volume is larger, causes the integral thickness of air conditioner indoor unit 10 (empty Adjust the size on 10 front-rear direction of indoor unit) it is larger, and 10 front side even curface of indoor unit opens up an air outlet, influences room The overall aesthetics of interior machine 10.And in the present embodiment, completely new improvement has been carried out for the air conditioner indoor unit 10 of circular appearance, has been led to The air-supply that air conditioner indoor unit 10 is realized using two Air Blast fans is crossed, the size of two Air Blast fans is all relatively small, can be very big The overall volume and thickness of ground reduction air conditioner indoor unit 10；Also, by forming upper air outlet 12a in shell forward upper, Shell lower front forms lower air outlet 12b, upper air outlet 12a and lower air outlet 12b and mutually sets off, and an air outlet is avoided to exist The visually lofty property of bring meets the higher aesthetic requirement of user so that 10 monnolithic case of indoor unit is more harmonious, beautiful.

In some embodiments, referring again to Fig. 1, shell include the open rear shell 11 in front side and be located at the front side of rear shell 11 with Rear shell 11 forms the front panel 12 of an accommodation space, and correspondingly, rear shell 11 and front panel 12 are in the perpendicular of carrying air conditioner indoor unit 10 The projection faced directly is circle.Rear shell 11 is formed with air inlet area 11a above-mentioned, and 12 top of front panel is formed with upper outlet air above-mentioned Mouth 12a, 12 lower part of front panel is formed with aforementioned lower air outlet 12b.

In some embodiments, the diameter dimension of upper air outlet 12a is equal with the diameter dimension of lower air outlet 12b, above goes out The value range of the ratio of the diameter dimension of the diameter dimension and shell of air port 12a is 0.2:1 to 0.3:1, for example, upper air outlet The ratio of the diameter dimension of the diameter dimension and shell of 12a is 0.26.In some embodiments, upper air outlet 12a and lower outlet air Mouth 12b is symmetrical relative to the cross central line of shell, by the way that upper air outlet 12a and lower air outlet 12b are designed as circle, And by upper air outlet 12a and lower air outlet 12b is symmetrical is designed, meets public aesthetical standard, further increase room The aesthetics and harmony of interior machine 10.

In some embodiments, the central point of upper air outlet 12a size and shell at a distance from the central point of lower air outlet 12b The value range of the ratio of body diameter dimension is 0.6:1 to 0.75:1, for example, the central point of upper air outlet 12a and lower air outlet The ratio apart from size and diameter of the housing size of the central point of 12b is 0.66.It is designed in this way air outlet 12a and lower air outlet The positions and dimensions of 12b, so that the overall dimensions of the size and position and front panel 12 of upper air outlet 12a and lower air outlet 12b It can more harmoniously match, further increase the aesthetics and harmony of indoor unit 10.

In some embodiments, air inlet area 11a can be two, and two air inlet area 11a can be formed in shell both lateral sides, horizontal To the direction of direction (also referred to as left and right directions) as indicated in figure 2.In some embodiments, two air inlet area 11a phases It is symmetrical to the longitudinal centre line of shell, further promote the aesthetics of indoor unit 10.

As shown in Fig. 2, the air conditioner indoor unit 10 of the present embodiment further includes heat exchanger 13, heat exchanger 13 is set in shell On the air intake passage for entering the wind area 11a and Air Blast fan, to carry out heat exchange with the surrounding air entered through air inlet area 11a.? It is formed positioned at shell both lateral sides there are two in the embodiment of air inlet area 11a, heat exchanger 13 is two, and two heat exchangers 13 should be with Two air inlet area 11a are corresponded, and are set in shell on the inside of corresponding air inlet area 11a respectively, with through corresponding air inlet The surrounding air that area 11a enters carries out heat exchange.

As shown in Fig. 2, each heat exchanger 13 is projected as arc in the vertical plane of carrying air conditioner indoor unit 10, with it is corresponding Air inlet area 11a matching, increase incoming air area, reduce air intake resistance, to improve the heat exchange efficiency of heat exchanger 13.Arc-shaped changes The center of circle of hot device 13 can be overlapped with the center of circle of shell, and two heat exchangers 13 are symmetrical relative to the vertical centerline of shell, be protected The size of heat exchanger 13 has been demonstrate,proved, can also provide sufficient remaining space for the arrangement of Air Blast fan in shell and other component.

In some embodiments, the value model of heat exchanger 13 and the lateral distance dimensional maximums of corresponding air inlet area 11a Enclosing is 30 to 40 millimeters, and the size of heat exchanger 13 covers the position opposite with air inlet area 11a enough, to guarantee heat exchanger 13 Heat exchange efficiency.

In some embodiments, as shown in Fig. 2, air conditioner indoor unit 10 further includes drip tray 16, drip tray 16 is in shell It is located at the bottom of heat exchanger 13 in the accommodation space in portion, for receiving the condensed water of the formation of heat exchanger 13.It is for heat exchanger 13 In two schemes, drip tray 16 is two, and two drip trays 16 and two heat exchangers 13 correspond, and is located at corresponding The bottom of heat exchanger 13.Each 16 bottom of drip tray is formed with discharge outlet, and discharge outlet is connect with drainpipe, will be connect by drainpipe The condensed water discharge received in water pond 16.

Fig. 5 is the decomposition diagram according to the air conditioner indoor unit 10 of the utility model one embodiment.

In some embodiments, it as shown in figure 5, two Air Blast fans of indoor unit 10 are centrifugal fan, such as is centrifuged Fan can be single-suction centrifugal fan 14.The shaft of centrifugal fan should extend transversely, carrying air conditioner indoor unit 10 above-mentioned Vertical plane refers to that air conditioner indoor unit 10 hangs on the plane of vertical wall vertically, if using air conditioner indoor unit 10 itself as reference, The parallel plane of the shell Ying Yu centrifugal fan shaft of air conditioner indoor unit 10 is projected as circle.

It is the scheme of single-suction centrifugal fan 14 for two Air Blast fans, preferably distinguishes shape in shell both lateral sides Cheng Youyi air inlet area 11a, the shaft of two single-suction centrifugal fans 14 are laterally extended, and two single-suction centrifugal fan 14 Two sides in the transverse direction of shell vertical centerline, the wind inlet of fan 14a of single-suction centrifugal fan 14 towards with The single-suction centrifugal fan 14 is located at ipsilateral air inlet area 11a, the wind inlet of fan 14a direction of another single-suction centrifugal fan 14 Be located at ipsilateral air inlet area 11a with the single-suction centrifugal fan 14, in other words, the fans of two single-suction centrifugal fans 14 into Air port 14a is opposite, corresponding air inlet area 11a is respectively facing, to promote the surrounding air around indoor unit 10 through corresponding air inlet Area 11a enters in shell.

The fan outlet 14b of one of single-suction centrifugal fan 14 is upward, another single-suction centrifugal fan 14 Fan outlet 14b is downward, and fan outlet 14b upward single-suction centrifugal fan 14 is configured to that fraction is promoted to pass through and this The corresponding air inlet area 11a of single-suction centrifugal fan 14 enters shell, exchanges heat with corresponding heat exchanger 13, and to accommodation space top Flowing, so that the fraction is blown out from the discharge pipe 18 being located above；Fan outlet 14b downward single-suction is centrifuged wind Fan 14 is configured to promote fraction to enter shell through air inlet area 11a corresponding with the single-suction centrifugal fan 14, and corresponding Heat exchanger 13 exchanges heat, and to accommodation space lower flow, so that the fraction is blown out from the discharge pipe 18 for being located at lower part.

In some embodiments, for air-flow is separately directed to two discharge pipes 18, air conditioner indoor unit 10 further includes and two 14 one-to-one two pods 15 of a single-suction centrifugal fan, each pod 15, which has, is centrifuged wind with corresponding single-suction The wind centralizing cavity of the fan outlet 14b connection of fan 14 and diversion air duct with wind centralizing cavity perforation, be formed on front side of diversion air duct with The opposite flow guiding air outlet 15b of corresponding air outlet (upper air outlet 12a or lower air outlet 12b).

The air intake (that is to say 181 air intake of outer tube) of two discharge pipes 18 passes through the water conservancy diversion outlet air of corresponding pod 15 Mouth 15b is located in diversion air duct.Pod 15 is configured to the gas of the fan outlet 14b of corresponding single-suction centrifugal fan 14 Stream guidance is in other words, corresponding with the single-suction centrifugal fan 14 that fan outlet 14b is upward to lead to corresponding discharge pipe 18 Stream cover 15 guides the air-flow of the fan outlet 14b of the single-suction centrifugal fan 14 to the discharge pipe 18 being located above, so that The air-flow is blown out forward by the discharge pipe 18 being located above；It is corresponding with the single-suction centrifugal fan 14 that fan outlet 14b is downward Pod 15 air-flow of the fan outlet 14b of the single-suction centrifugal fan 14 is guided to underlying discharge pipe 18, So that the air-flow is blown out forward by underlying discharge pipe 18.

Fig. 6 is the schematic diagram according to the pod 15 of the air conditioner indoor unit 10 of the utility model one embodiment.

In some embodiments, as shown in fig. 6, specifically, in the present embodiment, pod 15 includes the level that front and back extends Wall 151, curved wall 152, front side wall 153, rear wall (not identifying) and arc partition wall 154.Wherein, horizontal wall 151 is formed with The water conservancy diversion air inlet 15a being connected to the fan outlet 14b of corresponding single-suction centrifugal fan 14, in 152 circumferential direction of curved wall One end connect with one end in 151 transverse direction of horizontal wall, the other end in 152 circumferential direction of curved wall and horizontal wall 151 are horizontal The other end on direction connects, to limit a cavity with horizontal wall 151；The front side of the connection horizontal wall 151 of front side wall 153 With the front side of curved wall 152, by the front closure of pod 15, with the front side of closed cavity, rear wall connect 151 rear side of horizontal wall with 152 rear side of curved wall, the rear side of pod 15 is closed, with the rear side of closed cavity；Arc partition wall 154 is formed in cavity, Cavity is divided into wind centralizing cavity and diversion air duct above-mentioned, arc partition wall 154 is formed with connection wind centralizing cavity and diversion air duct Opening, front side wall 153 are formed with the preceding guide air outlet 15b opposite with diversion air duct.The pod 15 being consequently formed has One wind centralizing cavity is entered in the wind centralizing cavity of pod 15 by the air-flow that the fan outlet 14b of single-suction centrifugal fan 14 flows out It is mixed, ensure that outlet air uniformity；Also, using aforementioned special shape pod 15 and single-suction centrifugal fan 14 into Row cooperation realizes rounding off air-supply, can reduce windage loss, reduces turbulent flow, to improve air supply efficiency and reduce noise.

In some embodiments, the diversion air duct that arc partition wall 154 and curved wall 152 limit is preferably cylinder-shaped knot Structure that is to say that the part opposite with arc partition wall 154 of curved wall 152 is to constitute circular arc shape with arc partition wall 154, With by limiting columnar structured diversion air duct, so that columnar diversion air duct and corresponding circular outlet air mouth-shaped phase Matching, the air-flow of diversion air duct are directly blown out through corresponding air outlet forward, promote the smoothness of air-flow conveying, reduce air-flow damage It loses, further increases air supply efficiency.

It is understood that single-suction centrifugal fan 14 generally comprises the spiral case 141 with accommodating cavity and is set to accommodating Impeller (not shown) in chamber, in the present embodiment, accommodating cavity should be laterally extended, and accommodating cavity has wind inlet of fan 14a, spiral case 141 have the fan outlet 14b being connected to accommodating cavity, and impeller can be rotated relative to spiral case 141 around transverse axis.

In some embodiments, it is the overall structure size for reducing entire indoor unit 10, needs efficient two centrifugations wind Fan is blown, could be on the basis of meeting 10 apparent size of indoor unit, improving performance requirement.Foundation centrifugal fan crushing, By simulation analysis, determine using after two single-suctions to centrifugal fan as the two of the present embodiment Air Blast fans, also, each Meet the following conditions to centrifugal fan after single-suction:

Meet b2≤40 ° 30 °≤β, example to the blade installation outlet angle beta b2 of the impeller of centrifugal fan after each single-suction It such as, is 35 ° to the blade installation outlet angle beta b2 of centrifugal fan after each single-suction.To centrifugal fan ratio after each single-suction Revolving speed ns meets 58≤ns≤60, for example, to centrifugal fan specific speed ns being 59.48 after each single-suction.Each single-suction The peripheral speed u2 of backward centrifugal fan meets the meter per second of 11≤u2≤12, for example, to the circumference of centrifugal fan after each single-suction Speed u2 is 11.83 meter per seconds.Meet 0.7≤Ψ≤0.9 to the coefficient of total pressure Ψ of centrifugal fan after each single-suction, for example, It to the coefficient of total pressure Ψ of centrifugal fan is 0.88 after each single-suction.

In this way, by using the Air Blast fan after single-suction to centrifugal fan as the present embodiment, compared to forward centrifugal Fan, air supply efficiency is higher, also, forms speed due to by centrifugal force since air-flow is flowed through the shaped form leaf road of centrifugal fan Difference, inhomogeneities degree caused by can mitigating to centrifugal fan because of air velocity difference after single-suction.In addition, by by single-suction Installation outlet angle beta b2, specific speed ns, peripheral speed u2 and the coefficient of total pressure Ψ of backward centrifugal fan are limited to as above special number It is worth range, the intake after promoting single-suction to centrifugal fan crushing to centrifugal fan can be reduced after single-suction.Meanwhile it protecting It demonstrate,proves after single-suction under the premise of the above-mentioned preferable performance of centrifugal fan, can be adjusted after each single-suction to the size of centrifugal fan To lower size, for example, meeting after each single-suction to centrifugal fan: Ф 120*80mm that is to say that the diameter of spiral case is 120 Millimeter, with a thickness of 80 millimeters.

Thus whole to the lower size of size adjustable that can guarantee 10 complete machine of indoor unit, for example, the overall dimensions of shell are Ф 500*200mm, in other words, the diameter dimension of shell are 500 millimeters, and thickness is 220 millimeters.Upper air outlet 12a and The diameter dimension of lower air outlet 12b can be 120 millimeters, under the premise of guaranteeing 10 wind pushing performance of indoor unit, reduce indoor unit 10 overall dimensions meet user to the small-sized aspect demand of air conditioner indoor unit 10.

So far, although those skilled in the art will appreciate that the more of the utility model have been shown and described in detail herein A exemplary embodiment still, still can be according to the utility model public affairs in the case where not departing from the spirit and scope of the utility model The content opened directly determines or derives many other variations or modifications for meeting the utility model principle.Therefore, this is practical new The range of type is understood that and regards as to cover all such other variations or modifications.

Claims (10)

1. a kind of air conditioner indoor unit characterized by comprising

Shell, front side are formed with air outlet；

Discharge pipe is located in the air outlet, and the discharge pipe includes the outer tube and be connected to the outer tube wall that front and back extends The first inner tube protruded from front side of the outer tube is extended in gradual-enlargement type from the front to the back, the first inner tube air intake is located at described The position of the outer tube front end is closed in outer tube, and the outlet air end of first inner tube protrudes from the front side of the air outlet；

The first clearance space is formed between the outer tube internal perisporium and the first inner tube periphery wall, so that fraction is from institute It states and is blown out forward in the first inner tube, fraction is blown out forward from first clearance space, to expand wind-out range.

2. air conditioner indoor unit according to claim 1, it is characterised in that

The discharge pipe further includes the second inner tube, and second inner tube is prolonged in gradual-enlargement type from the front to the back in first inner tube Stretch, and form the second clearance space between second outer wall of inner tube and first inner tube wall so that fraction from Side is blown out forward in first inner tube, and from second clearance space, side is blown out fraction forward, and fraction is from described Side is blown out forward in second inner tube.

3. air conditioner indoor unit according to claim 2, it is characterised in that

The outer tube internal perisporium includes the rear wall section and front wall segments successively to connect from the outer tube air intake to outlet air extreme direction, The first inner tube air intake is located in the space of front wall segments composition, in the front wall segments and first inner tube periphery First clearance space is formed between wall；

The rear wall section be by the truncated hollow cone of outer tube air intake flaring forward, the front wall segments be by with the rear wall Truncated hollow cone of the position that section connects to the outer tube outlet air end flaring；And

The cone angle of the rear wall section is greater than the cone angle of the front wall segments.

4. air conditioner indoor unit according to claim 3, it is characterised in that

First inner tube is uniform wall thickness, from its air intake to the truncated hollow cone of outlet air end flaring；

And the cone angle of first inner tube is greater than the cone angle of the front wall segments.

5. air conditioner indoor unit according to claim 3, it is characterised in that

The second inner tube periphery wall is the truncated cone shape of flaring from the front to the back, and the second inner tube internal perisporium is by described second Truncated cone shape from pipe air intake to outlet air end flaring, and the cone angle of the second inner tube internal perisporium be greater than the second inner tube periphery wall Cone angle；

And the cone angle of the second inner tube periphery wall is equal to the cone angle of the front wall segments.

6. air conditioner indoor unit according to claim 4, it is characterised in that

The cone angle 2c of the front wall segments of the outer tube meets: 0 ° < 2c≤40 °；

The cone angle 2b of first inner tube meets: 20 °≤2b≤80 °.

7. air conditioner indoor unit according to claim 5, it is characterised in that

The cone angle 2d of the second inner tube internal perisporium meets: 30 °≤2d≤60 °.

8. air conditioner indoor unit according to claim 1, it is characterised in that

The air outlet is two, one of them is located at the shell forward upper, another is located at the shell lower front, Air outlet positioned at the shell forward upper is denoted as upper air outlet, is denoted as down positioned at the air outlet of the shell lower front Air port；

The discharge pipe is two, one of them described discharge pipe is located at the top of another discharge pipe, the institute being located above It is corresponding with the upper air outlet to state discharge pipe, the underlying discharge pipe is corresponding with the lower air outlet.

9. air conditioner indoor unit according to claim 8, it is characterised in that

The shell is also formed with air inlet area；

The indoor unit further include:

Two Air Blast fans, one of them described Air Blast fan are configured to promote fraction from the air inlet area to being located above The discharge pipe at flow so that the discharge pipe of the fraction through being located above forward side blow out；Described in another Air Blast fan is configured to promote fraction to flowing at the underlying discharge pipe, so that under fraction is through being located at Side is blown out the discharge pipe of side forward.

10. air conditioner indoor unit according to claim 1, it is characterised in that

Before the shell includes the open rear shell in front side and forms an accommodation space with the rear shell on front side of the rear shell Panel；

The air outlet is formed in the front panel.