CN107366966B

CN107366966B - Wall-mounted air conditioner indoor unit

Info

Publication number: CN107366966B
Application number: CN201710666709.9A
Authority: CN
Inventors: 尹晓英; 李英舒
Original assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Haier Smart Home Co Ltd
Priority date: 2017-08-07
Filing date: 2017-08-07
Publication date: 2022-10-28
Anticipated expiration: 2037-08-07
Also published as: WO2019029418A1; CN107366966A

Abstract

The invention provides a wall-mounted air conditioner indoor unit, which comprises a first air channel and a second air channel, wherein the first air channel comprises a first sub air channel and a second sub air channel which are sequentially arranged along the air flowing direction, the first sub air channel is formed outside a shell, the second sub air channel is formed in the shell, and a fan is arranged in the first sub air channel; a heat exchanger is arranged in the second air duct; the air sent out through the first air duct and the air sent out through the second air duct are mixed at the front end of the shell. The invention can adjust the appearance of the shell according to the use requirement. The number of the heat exchangers can be adjusted according to the air conditioning capacity required by the air conditioning room, so that the air conditioning efficiency is ensured, and various requirements of users are met. The double-air-channel air supply can improve the comfort of a user, simultaneously ensures a sufficiently long air supply path, and the fan arranged in the first sub-air channel does not occupy the space of the shell, so that the thickness of the air conditioner can be obviously reduced.

Description

Wall-mounted air conditioner indoor unit

Technical Field

The invention relates to the technical field of air conditioning, in particular to an indoor unit of a wall-mounted air conditioner.

Background

The existing wall-mounted air conditioner indoor unit tends to be in a miniaturized and ultrathin design, and meanwhile, the indoor unit is required to have a reasonable and smooth inner flow channel and a certain static pressure recovery space in terms of performance. This presents a significant challenge to the design of ducts for wall mounted air conditioner indoor units. If the air supply duct is relatively long, the air supply volume is large, the noise is low, and the air speed is moderate, but a long air supply duct is difficult to form in a miniaturized ultrathin shell.

In order to solve the above problems in the prior art, the structure of the air deflector at the air outlet of the indoor unit is adjusted to extend the air supply duct and increase the air supply distance. One common method is to extend the width of the air deflector, in which the maximum width of the air deflector is consistent with the width of the air outlet, and the extension distance is limited, and the other method is to arrange an upper guide plate and a lower guide plate at the air outlet of the air conditioner to extend the air outlet of the air supply system of the wall-mounted air conditioner, as disclosed in the prior application (application No. 201310106563.4) of the applicant. Although the length of the air supply duct can be obviously increased in the mode, the size of the shell of the indoor unit cannot be further reduced, and the width of the air conditioner is increased by the air guide plate extending outwards when the air conditioner is started. This design is contrary to the design principle of miniaturization and ultra-thinness.

In summary, the wall-mounted air conditioner in the prior art has a problem that the miniaturization design and the balance of the air supply duct cannot be achieved.

Disclosure of Invention

The invention discloses a wall-mounted air conditioner indoor unit, aiming at realizing the balance of ultra-thin design and good air supply effect through a brand new structural design.

The invention provides a wall-mounted air conditioner indoor unit, which comprises a first air duct and a second air duct, wherein the first air duct comprises a first sub-air duct and a second sub-air duct which are sequentially arranged along the air flowing direction, the first sub-air duct is formed at the outer side of a shell, the second sub-air duct is formed in the shell, and a fan is arranged in the first sub-air duct; a heat exchanger is arranged in the second air duct; the air sent out through the first air duct and the air sent out through the second air duct are mixed at the front end of the shell.

Furthermore, the first air duct is provided with a first air supply outlet, the first air supply outlet is formed at the tail end of the second sub-air duct along the air flowing direction, and the first air supply outlet is a slit formed by the arc-shaped wall plates in an enclosing mode.

Further, the first air supply outlet is arranged around the second air duct, faces the second air supply outlet, and is formed at the tail end of the second air duct in the air flowing direction.

Furthermore, the first air supply opening is formed by a first arc-shaped wall plate and a second arc-shaped wall plate which are arranged in opposite directions, the curvature of the first arc-shaped wall plate is smaller than that of the second arc-shaped wall plate, the distance between the rear end of the first arc-shaped wall plate and the rear end of the second arc-shaped wall plate is smaller than the distance between the middle point of the first arc-shaped wall plate and the middle point of the second arc-shaped wall plate, the front end of the first arc-shaped wall plate is arranged on the outer side of the front end of the second arc-shaped wall plate, and the first air supply opening is formed between the front end of the first arc-shaped wall plate and the front end of the second arc-shaped wall plate.

Furthermore, the second air duct comprises a plurality of heat exchange air ducts, a section of heat exchanger is arranged in each heat exchange air duct, a second air supply outlet is formed at the tail end of each heat exchange air duct along the air flowing direction, and the first air supply outlet is arranged around the second air supply outlet of the heat exchange air duct.

Furthermore, the inner diameter of the first sub-air duct gradually decreases from the first end to the second end, and the plurality of first air inlets are arranged on the side wall of the first sub-air duct in a surrounding manner and are uniformly distributed along the first sub-air duct.

Further, a second air inlet is formed at the beginning of the second air duct along the air flowing direction, and the second air inlet is located at the rear end of the shell.

Optionally, the second air inlet and the second air supply outlet are rectangular.

Optionally, the second air inlet and the second air supply outlet are circular.

The wall-mounted air conditioner indoor unit disclosed by the invention can adjust the appearance of the shell according to the use requirement. The number of the heat exchangers can be adjusted according to the air conditioning capacity required by the air conditioning room, the air conditioning efficiency is ensured, and various requirements of users are met. The double-air-channel air supply can improve the comfort of users, simultaneously ensures a sufficiently long air supply path, and the fan arranged in the first sub-air channel does not occupy the space of the shell, thereby obviously reducing the thickness of the air conditioner.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are 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 schematic view of a duct of an embodiment of a wall-mounted air conditioner indoor unit according to the present disclosure;

fig. 2 is a schematic view illustrating a structure of the wall-mounted type air conditioner indoor unit shown in fig. 1;

FIG. 3 is an exploded view of FIG. 2;

fig. 4 is a schematic structural view of a wall-mounted air conditioner provided with three heat exchangers;

FIG. 5 is an exploded view of FIG. 4

Fig. 6 is a block diagram of another embodiment of a wall-mounted air conditioner indoor unit according to the present disclosure;

FIG. 7 is an exploded view of FIG. 6;

fig. 8 is a schematic view of a duct of the wall mounted air conditioner indoor unit shown in fig. 6;

FIG. 9 is a top view of FIG. 6;

fig. 10 is a schematic view illustrating a structure of a first blowing port of the wall-mounted type indoor unit of an air conditioner shown in fig. 1 to 9.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

First, technical terms related to the embodiments are briefly described. In the specific real-time mode, when the front, back, upper, lower, left, right and other orientations of each structural member are mentioned, if not specifically stated, the orientations are defined by the positions of the structural members relative to the user in the normal use state. Moreover, it should be noted that the terms "front, rear, upper, lower, left, right" and the like are used for orientation, and are used for descriptive convenience and understanding only, and are not intended to indicate or imply that the device or structure being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention. The following heat exchange air refers to flowing air after heat exchange with a heat exchanger, and the natural wind refers to flowing air at a natural temperature from an air-conditioned room, and is relative to flowing heat exchange air after heat exchange with the heat exchanger. The mixed air refers to mixed flowing air formed by mixing heat exchange air after heat exchange with the heat exchanger and natural air.

Referring to fig. 1 to 5 and 10, a schematic structural view of an embodiment of a wall-mounted air conditioner indoor unit according to the present invention is shown. As shown in the drawings, the wall-mounted air conditioner indoor unit disclosed in the present embodiment defines a first air duct a and a second air duct B. Specifically, the first duct a is an air flow path defined by the indoor unit casing 10 of the air conditioner and the air guide ducts 3 to 5 provided outside the casing 10, and the second duct B is a path independently defined by the casing 10. The first air duct a comprises a first sub-air duct A1 and a second sub-air duct A2 which are sequentially formed along the flowing direction of natural wind. The first sub-air duct A1 is communicated with the second sub-air duct A2. The first sub-duct A1 is formed outside the casing 10, preferably in the air guide duct 3-5 or in the air guide duct 3-5 and the support structure 3-3 of the air guide duct 3-5. The second sub-air ducts A2 are formed in the housing 10 and are distributed entirely in the hollow inner cavity of the housing 10. A fan 4 is provided in the first sub-air passage A1, and the fan 4 is preferably a centrifugal fan 4. Since the fan 4 is moved from the air conditioning casing 10 to the first sub-duct A1, the thickness of the casing 10 can be effectively reduced, so that the casing 10 is thinner and smaller, and even an ultra-thin design can be realized in a true sense, and the overall thickness is about 20 cm.

The second duct B is defined entirely by the housing 10. The heat exchanger 2 is disposed in the second air passage B. The area of the induced draft surface of the heat exchanger 2 is preferably 80% to 90% of the cross-sectional area of the second air passage B. The housing 10 is disposed around the second air duct B, and the inner wall of the housing 10 defines the shape of the second air duct B. When the wall-mounted air conditioner indoor unit disclosed in this embodiment operates, the fan 4 disposed in the first sub-air duct A1 operates to introduce natural air in an air-conditioned room into the first sub-air duct A1, and the natural air flows into the casing 10 through the first sub-air duct A1 and the second sub-air duct A2 and flows out from the front end of the casing 10, so that the air supply flow is long. Meanwhile, the heat exchange air after heat exchange with the heat exchanger 2 via the second air duct B also flows out from the front end of the housing 10, and the air sent out via the first air duct a and the air sent out via the second air duct B are mixed at the front end X of the housing 10. The second air duct B has a second air inlet 20, the second air inlet 20 is formed at the beginning of the second air duct B along the air flowing direction, and the second air inlet 20 is located at the rear end of the casing 10 and is far away from the air mixing area X. Compared with the first air duct A, the path of the second air duct B is relatively short, the heat loss of heat exchange air is small, air with proper temperature is formed after being mixed with natural air and is sent into an air-conditioned room, and the comfort of users in the air-conditioned room is improved.

In the actual use process, a plurality of heat exchangers can be arranged in the second air duct B to meet the requirements of different air conditioning capacities. In terms of structural design, in order to meet the use requirements of a plurality of heat exchangers, the second air duct B comprises a plurality of heat exchange channels. One heat exchanger is disposed in each heat exchange channel. The air inlet and the air outlet of the plurality of heat exchange passages are respectively located on the same side of the housing 10. A wall-mounted air conditioner indoor unit provided with two heat exchangers and three heat exchangers, respectively, is shown in the drawing. As shown in fig. 1 to 3, the path design of the air duct will be specifically described by taking the arrangement of two heat exchange passages as an example. In order to cooperate with two heat exchangers (as shown in fig. 2-1 and 2-2), the housing 10 has two rectangular frames symmetrically disposed and connected to each other, and each of the rectangular frames has a hollow structure inside, and the hollow structures respectively define a second sub-air duct A2 located in the housing 10. The connection point of the first sub air passage A1 and the two second sub air passages A2 is located substantially on the center line of the casing 10, preferably on the center line of the casing 10. The natural wind flowing in through the first sub-air passage A1 branches at a communication point and flows into the two second sub-air passages A2, respectively. The air flows along the second sub-duct A2 from the rear end of the casing 10 to the front end of the casing 10. The second sub-duct A2 is formed with at least one first blowing port 11 at the front end of the casing 10 along the frame of the casing 10.

As shown in the drawings, the first air blowing ports 11 preferably extend along the front end of the frame of the casing 10 and surround each heat exchange duct, and the first air blowing ports 11 opened on either side face the heat exchange duct, preferably face the second air blowing ports 21 formed at the end of the heat exchange duct in the air flowing direction and are substantially flush with the second air blowing ports 21. In order to optimize the induced air effect, the first air supply outlet 11 is a slit surrounded by arc-shaped wall plates. The curved wall panels also enclose a hollow structure in the rectangular frame of the housing 10, the position of the slits being substantially flush with the position of the second supply air opening 21, preferably with the position of the second supply air opening 21. Referring to fig. 10, the first air supply opening 11 is defined by a first curved wall plate 11-1 and a second curved wall plate 11-2 which are oppositely arranged, and the curvature of the first curved wall plate 11-1 is smaller than that of the second curved wall plate 11-2. The front end 11-3 of the first curved wall plate 11-1 and the front end 11-4 of the second curved wall plate 11-2 extend in opposite directions, the front end of the first curved wall plate 11-1 is disposed outside the front end 11-4 of the second curved wall plate 11-2, and the first air supply opening 11 is formed between the front end 11-3 of the first curved wall plate 11-1 and the front end 11-4 of the second curved wall plate 11-2, and the flow direction of the supplied air is defined by the front end 11-3 of the first curved wall plate 11-1 and the front end 11-4 of the second curved wall plate 11-2 together. Preferably, the arc angle of the first arc-shaped wall plate 11-1 is 120 ° to 140 °, and the arc angle of the second arc-shaped wall plate 11-2 is 100 ° to 115 °. The distance between the rear end of the first arc-shaped wall plate 11-1 and the rear end of the second arc-shaped wall plate 11-2 is smaller than the distance between the middle point of the first arc-shaped wall plate 11-1 and the middle point of the second arc-shaped wall plate 11-2, namely, the hollow cavity enclosed by the arc-shaped wall plates is of a structure which gradually expands from back to front and then gradually shrinks. When the indoor unit of the air conditioner operates, the fan 4 disposed in the first sub-air duct A1 operates to introduce natural air in the air-conditioned room into the first sub-air duct A1, flows into the casing 10 through the first sub-air duct A1 and the second sub-air duct A2, and flows to the first air supply outlets 11 distributed around the second air supply outlet 21. Because the hollow cavity surrounded by the first arc-shaped wall plate 11-1 is a structure that gradually expands from back to front and then gradually shrinks, air flowing in from the position I as shown in the figure flows to the middle point of the arc-shaped wall plate under pressure, and because the cavity gradually expands and then gradually shrinks, air entering the gradually shrinking section and mutually extruded is pressed to enter the slit and flow out from the slit, the air flow rate of natural wind is accelerated, negative pressure is formed at the front end of the shell 10, namely the mixed air area X of the first air supply outlet 11 and the second air supply outlet 21, under the action of pressure, more air at the rear side of the shell 10 flows into the heat exchange air duct from the second air inlet 20 and flows along the heat exchange air duct, the heat exchange air with the heat exchanger flows out from the second air supply outlet 21, and the mixed air area X obtains mixed air with moderate temperature and sends the mixed air to an air conditioning room, so that a user feels comfortable.

As shown in fig. 4 and 5, three heat exchangers (2-1, 2-2 and 2-3 as shown) or more heat exchangers may also be provided. In this application scenario, the first air supply opening 11 extends along the frame of the casing 10 and surrounds each heat exchange air duct, and similarly, the first air supply opening 11 opened on any side faces the heat exchange air duct, so as to ensure that a mixed flow region X can be formed at the front end of each heat exchange air duct, and obtain air supply with moderate temperature.

The structure of the first sub-duct A1 is described in detail as shown in fig. 1 to 5. The first sub-air duct A1 is mainly composed of air ducts 3-5. Under certain conditions, the wind guide barrel 3-5 does not have enough structural strength per se, and a supporting structure 3-3 is also arranged. The supporting structure 3-3 is made of a material with better strength and certain degree of flexibility, and can be made of metal or nonmetal materials. The support structure 3-3 is preferably cylindrical for connecting the air duct 3-5 and the housing 10. When the supporting structure 3-3 is arranged, the first sub-air duct A1 is formed by the air duct 3-5 and the supporting structure 3-3 together. Specifically, the first sub-duct A1 includes a first end 3-1 and a second end 3-2, wherein the first end 3-1 is fixed on the inner wall of the air-conditioned room, and the second end 3-2 is communicated with the second sub-duct A2. The side wall of the first sub-air duct A1 is provided with a first air inlet 3-4. In order to improve the structural strength of the connection between the first sub-air duct A1 and the wall, a certain contact area is ensured, and meanwhile, the loss of air flow is reduced. The inner diameter of the first sub-air duct A1 is gradually reduced from the first end 3-1 to the second end 3-2, and the plurality of first air inlets 3-4 are arranged on the side wall of the first sub-air duct A1 in a surrounding manner and are uniformly distributed along the first sub-air duct A1. The first air inlet 3-4 is preferably a plurality of uniformly distributed air inlet holes,

the second air inlet 20 and the second air outlet 21 may be designed to have a rectangular shape. The second air inlet 20 and the second air outlet 21 may be designed to be circular in consideration of aesthetic factors. As shown in fig. 6 to 9, in the second embodiment of the wall-mounted air conditioner indoor unit disclosed in the present invention, the second air duct B is integrally defined by the circular housing 10, and the heat exchanger is disposed in the second air duct B, and the induced air area of the heat exchanger is preferably 80% to 90% of the sectional area of the second air duct B. The heat exchanger is preferably arranged concentrically with the circular housing 10, the housing 10 surrounding the second air duct B. The casing 10 has an annular frame, the annular frame is a hollow structure to define a second sub-duct A2 located in the casing 10, air flows from the rear end of the casing 10 to the front end of the casing 10 along the second sub-duct A2, and the second sub-duct A2 forms a continuous circular first air supply opening 11 at the front end of the casing 10 along the annular frame of the casing 10. The opening direction of the first air blowing opening 11 faces the second air blowing opening 21 of the second air duct B and is substantially flush with the second air blowing opening 21. As shown in fig. 10, the basic structure of the first air supply opening 11 in the form of a slit in the present embodiment is the same as that in the first embodiment, and is not described herein again. The housing 10 may be designed in other shapes according to the interior style, in addition to being designed in a circular shape.

The wall-mounted air conditioner indoor unit disclosed by the invention can adjust the appearance of the shell according to the use requirement. The number of the heat exchangers can be adjusted according to the air conditioning capacity required by the air conditioning room, so that the air conditioning efficiency is ensured, and various requirements of users are met. The double-air-channel air supply can improve the comfort of users, simultaneously ensures a sufficiently long air supply path, and the fan arranged in the first sub-air channel does not occupy the space of the shell, thereby obviously reducing the thickness of the air conditioner.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. An indoor unit of a wall-mounted air conditioner is characterized by comprising a first air channel and a second air channel, wherein the first air channel comprises a first sub-air channel and a second sub-air channel which are sequentially arranged along the air flowing direction, the first sub-air channel is formed outside a shell, the second sub-air channel is formed in the shell, and a fan is arranged in the first sub-air channel; a heat exchanger is arranged in the second air duct; the air sent out through the first air duct and the air sent out through the second air duct are mixed at the front end of the shell;

the first air duct is provided with a first air supply outlet, the first air supply outlet is formed at the tail end of the second sub-air duct along the air flowing direction, and the first air supply outlet is a slit formed by the arc-shaped wall plates in a surrounding mode; the first air supply outlet is arranged around the second air duct, faces the second air supply outlet, and is formed at the tail end of the second air duct in the air flowing direction; the second air duct has a shorter path than the first air duct.

2. The indoor unit of a wall-mounted air conditioner according to claim 1, wherein the first air supply opening is defined by a first curved wall plate and a second curved wall plate which are oppositely arranged, the curvature of the first curved wall plate is smaller than that of the second curved wall plate, the distance between the rear end of the first curved wall plate and the rear end of the second curved wall plate is smaller than the distance between the middle point of the first curved wall plate and the middle point of the second curved wall plate, the front end of the first curved wall plate is arranged outside the front end of the second curved wall plate, and the first air supply opening is formed between the front end of the first curved wall plate and the front end of the second curved wall plate.

3. The wall-mounted air conditioner indoor unit according to claim 2, wherein the second duct comprises a plurality of heat exchange ducts, each heat exchange duct has a heat exchanger disposed therein, each heat exchange duct has a second air supply outlet formed at an end thereof in a wind direction of air flowing therethrough, and the first air supply outlet is disposed around the second air supply outlet of the heat exchange duct.

4. The wall-mounted air conditioner indoor unit according to claim 3, wherein the first end of the first sub air duct is fixed on the inner wall of the air conditioning room, the second end of the first sub air duct is communicated with the second sub air duct, and a first air inlet is formed in the side wall of the first sub air duct.

5. The wall-mounted air conditioner indoor unit according to claim 4, wherein the inner diameter of the first sub-air duct gradually decreases from the first end to the second end, and the plurality of first air inlets are circumferentially formed in the side wall of the first sub-air duct and are uniformly distributed along the first sub-air duct.

6. The wall mounted air conditioner indoor unit as claimed in claim 5, wherein a second air inlet is formed at the beginning of the second air duct in the air flowing direction, and the second air inlet is located at the rear end of the housing.

7. The wall-mounted air conditioner indoor unit according to claim 6, wherein the second air inlet and the second air outlet are rectangular.

8. The wall mounted air conditioner indoor unit of claim 6, wherein the second air intake and the second air delivery outlet are circular.