WO2019029418A1 - 壁挂式空调器室内机 - Google Patents

壁挂式空调器室内机 Download PDF

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Publication number
WO2019029418A1
WO2019029418A1 PCT/CN2018/098050 CN2018098050W WO2019029418A1 WO 2019029418 A1 WO2019029418 A1 WO 2019029418A1 CN 2018098050 W CN2018098050 W CN 2018098050W WO 2019029418 A1 WO2019029418 A1 WO 2019029418A1
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WIPO (PCT)
Prior art keywords
air
duct
sub
wall
indoor unit
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PCT/CN2018/098050
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English (en)
French (fr)
Inventor
尹晓英
李英舒
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青岛海尔空调器有限总公司
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Publication of WO2019029418A1 publication Critical patent/WO2019029418A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30—Arrangement or mounting of heat-exchangers

Definitions

  • the invention relates to the technical field of air conditioning, and in particular to a wall-mounted air conditioner indoor unit.
  • the existing wall-mounted air conditioner indoor unit tends to be miniaturized and ultra-thin design, and at the same time, the internal flow path is required to be reasonably smooth and has a certain static pressure recovery space. This is a great challenge for the air duct design of the wall-mounted air conditioner indoor unit. If the air supply duct is relatively long, the air supply volume is large, the noise is low, and the wind speed is moderate, but it is difficult to form a long air supply duct in the miniaturized ultra-thin casing.
  • the structure of the air deflector of the indoor air outlet is adjusted to extend the air supply duct and increase the air supply distance.
  • a common practice is to extend the width of the air deflector. In this way, the maximum width of the air deflector is the same as the width of the air outlet, and the extension distance is limited.
  • Another method is the applicant's prior application (application number 201310106563.4). In the disclosed technical solution, two upper and lower guide plates are arranged at the air outlet of the air conditioner, and the air outlet of the air supply system of the wall-mounted air conditioner is extended. Although this method can significantly increase the length of the air supply duct, the size of the indoor unit casing cannot be further reduced. When the machine is turned on, the outwardly extending air deflector increases the width of the air conditioner. This design is contrary to the design principle of miniaturization and ultra-thin.
  • the wall-mounted air conditioner of the prior art has a problem that the miniaturization design and the air supply duct balance cannot be achieved.
  • the invention discloses a wall-mounted air conditioner indoor unit, which aims to achieve a balance between an ultra-thin design and a good air supply effect through a completely new structural design.
  • the present invention provides a wall-mounted air conditioner indoor unit, including a first air duct and a second air duct, wherein the first air duct includes a first sub air duct and a second sub air duct which are sequentially disposed along a direction of air flow.
  • the first sub air duct is formed outside the casing
  • the second sub air duct is formed in the casing
  • a fan is disposed in the first sub air duct
  • a heat exchanger is disposed in the second air duct
  • the air sent through the first air duct and the air sent through the second air duct mix at the front end of the casing.
  • the first air passage has a first air supply opening, the first air supply opening is formed at an end of the second sub air passage in the air flow direction, and the first air supply opening is surrounded by a curved wall plate. The slit.
  • first air supply opening is disposed around the second air passage, the first air supply opening is toward the second air supply opening, and the second air supply opening is formed at an end of the second air passage along the air flow direction.
  • the first air supply opening is surrounded by the first curved wall plate and the second curved wall plate which are oppositely disposed, and the curvature of the first curved wall plate is smaller than the curvature of the second curved wall plate.
  • a distance between a rear end of the first curved wall panel and a rear end of the second curved wall panel is smaller than a distance between a midpoint of the first curved panel and a midpoint of the second curved panel,
  • the front end of the first curved wall panel is disposed outside the front end of the second curved wall panel, and the first air supply opening is formed at a front end of the first curved wall panel and the second curved wall panel Between the front ends.
  • the second air passage includes a plurality of heat exchange air passages, and each of the heat exchange air passages is provided with a heat exchanger, and each of the heat exchange air passages is formed with a first end along the air flow wind direction. a second air supply opening, the first air supply opening is disposed around the second air supply opening of the heat exchange air passage.
  • the inner diameter of the first sub-duct is gradually reduced from the first end to the second end, and the plurality of first air inlets are circumferentially opened on the side wall of the first sub-duct, and It is evenly distributed along the first sub-duct.
  • a second air inlet is formed at a beginning of the second air passage in a direction of air flow, and the second air inlet is located at a rear end of the housing.
  • the second air inlet and the second air outlet are rectangular.
  • the second air inlet and the second air outlet are circular.
  • the wall-mounted air conditioner indoor unit disclosed in the present invention can adjust the appearance of the casing according to the needs of use.
  • the number of heat exchangers can be adjusted according to the air conditioning capacity required by the air-conditioned room to ensure the air-conditioning efficiency and meet various requirements of the user.
  • the air supply of the double air duct can improve the user's comfort while ensuring a sufficiently long air supply path.
  • the fan disposed in the first sub air duct does not occupy the housing space, and the thickness of the air conditioner can be significantly reduced.
  • FIG. 1 is a schematic view of an air passage of an embodiment of a wall-mounted air conditioner indoor unit according to the present invention
  • FIG. 2 is a schematic structural view of the indoor unit of the wall-mounted air conditioner shown in FIG. 1;
  • Figure 3 is an exploded view of Figure 2;
  • FIG. 4 is a schematic structural view of a wall-mounted air conditioner provided with three heat exchangers
  • Figure 5 is an exploded view of Figure 4
  • Figure 6 is a structural view showing another embodiment of the indoor unit of the wall-mounted air conditioner of the present invention.
  • Figure 7 is an exploded view of Figure 6;
  • Figure 8 is a schematic view of the air passage of the indoor unit of the wall-mounted air conditioner shown in Figure 6;
  • Figure 9 is a plan view of Figure 6;
  • Fig. 10 is a structural schematic view showing the first air supply port in the indoor unit of the wall-mounted air conditioner shown in Figs. 1 to 9;
  • the following heat exchange air refers to the flowing air after heat exchange with the heat exchanger
  • the natural wind refers to the flowing air from the natural temperature of the air-conditioned room, relative to the flow of heat exchange air after heat exchange through the heat exchanger.
  • Mixed air refers to mixed flowing air formed by mixing heat exchange air and natural wind after heat exchange with a heat exchanger.
  • FIG. 1 a schematic structural view of a specific embodiment of a wall-mounted air conditioner indoor unit disclosed in the present invention is shown.
  • the first air duct A and the second air duct B are defined in the indoor unit of the wall-mounted air conditioner disclosed in the embodiment.
  • the first air passage A is an air flow path defined by the air conditioner indoor unit casing 10 and the air ducts 3-5 disposed outside the casing 10, and the second air passage B is independently defined by the casing 10.
  • the first air passage A includes a first sub-air passage A1 and a second sub-air passage A2 which are sequentially formed along a natural wind flow direction.
  • the first sub-duct A1 and the second sub-duct A2 are in communication.
  • the first sub-duct A1 is formed outside the casing 10, preferably in the support structure 3-3 of the air duct 3-5 or the air duct 3-5 and the air duct 3-5.
  • the second sub-duct A2 is formed in the housing 10 and is integrally distributed in the hollow interior of the housing 10.
  • a fan 4 is provided in the first sub-duct A1, and the fan 4 is preferably a centrifugal fan 4. Since the fan 4 is moved from the air-conditioning case 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 lighter, and even a slim design in a true sense can be realized.
  • the overall thickness is about 20cm.
  • the second duct B is entirely defined by the housing 10.
  • the heat exchanger 2 is disposed in the second air passage B.
  • the area of the draft surface of the heat exchanger 2 is preferably 80% to 90% of the cross-sectional area of the second duct B.
  • the housing 10 is disposed around the second air passage B, and the inner wall of the housing 10 defines the form of the second air passage B.
  • the heat exchange air after heat exchange via the second air passage B and the heat exchanger 2 also flows out from the front end of the casing 10, and the air sent through the first air passage A and the air sent through the second air passage B are in the casing. 10 front end X mixed air.
  • the second air passage B has a second air inlet 20 formed at a beginning end of the second air passage B in the air flow direction, and the second air inlet 20 is located at the rear end of the casing 10, away from the mixed air region X. .
  • the path of the second air passage B is relatively short, and the heat loss of the heat exchange air is small, and the air with suitable temperature is mixed with the natural air to be sent into the air-conditioned room, thereby improving the comfort of the air-conditioned room user. Sex.
  • the second air passage B includes a plurality of heat exchange passages.
  • a heat exchanger is provided in each heat exchange passage.
  • the air inlet and the air supply port of the plurality of heat exchange channels are respectively located on the same side of the casing 10.
  • a wall-mounted air conditioner indoor unit provided with two heat exchangers and three heat exchangers is shown in the drawing. As shown in Figure 1 to Figure 3, the path design of the air duct is specifically described by taking two heat exchange channels as an example.
  • the housing 10 has two rectangular frames symmetrically arranged and connected to each other, and each of the rectangular frames has a hollow structure inside, and the hollow structures are respectively A second sub-duct A2 located in the housing 10 is defined.
  • the communication point of the first sub-duct A1 and the two second sub-ducts A2 is located substantially on the center line of the casing 10, preferably on the center line of the casing 10.
  • the natural wind that has flowed in through the first sub-duct A1 branches into a branch at the communication point and flows into the two second sub-ducts A2.
  • the second sub-duct A2 is formed with at least one first air supply opening 11 at the front end of the housing 10 along the frame of the housing 10.
  • the first air supply opening 11 preferably extends along the front end of the frame of the casing 10 and surrounds each of the heat exchange air passages 1100.
  • the second air supply port 21 at the end of the heat exchange air passage 1100 in the air flow direction is substantially flush with the second air supply port 21.
  • the first air supply opening 11 is a slit surrounded by the curved wall plate.
  • the curved wall plate simultaneously encloses a hollow structure in the rectangular frame of the casing 10, and the position of the slit is substantially flush with the position of the second air supply port 21, preferably flush with the position of the second air supply port 21.
  • the first air supply opening 11 is surrounded by the first curved wall plate 11-1 and the second curved wall plate 11-2.
  • the curvature of the first curved wall plate 11-1 is smaller than that of the first curved wall plate 11-1.
  • the front end 11-3 of the first curved wall panel 11-1 and the front end 11-4 of the second curved wall panel 11-2 extend in opposite directions, and the front end of the first curved wall panel 11-1 is disposed in the second arc
  • the first air supply opening 11 is formed at the front end 11-3 of the first curved wall panel 11-1 and the front end 11-4 of the second arcuate panel 11-2.
  • the flow direction of the blow air is collectively defined by the front end 11-3 of the first curved wall panel 11-1 and the front end 11-4 of the second curved wall panel 11-2.
  • the arcuate angle of the first curved wall panel 11-1 is 120° to 140°
  • the arcuate angle of the second curved wall panel 11-2 is 100° to 115°.
  • the distance between the rear end of the first curved wall panel 11-1 and the rear end of the second curved wall panel 11-2 is smaller than the midpoint of the first curved wall panel 11-1 and the second curved panel
  • the distance between the midpoints of 11-2, that is, the hollow cavity surrounded by the curved wall plates is a structure that gradually expands and then tapers from the back to the front.
  • the fan 4 disposed in the first sub-duct A1 is operated to introduce the natural wind in the air-conditioned room to the first sub-duct A1 via the first sub-duct A1 and the second sub-duct.
  • the A2 flows into the casing 10 and flows to the first air supply port 11 distributed around the second air supply port 21. Since the hollow cavity surrounded by the first curved wall plate 11-1 is a structure that gradually expands and then tapers from the front to the front, the air flowing in from the position I shown in the figure is pressed against the curved wall plate.
  • the air that squeezes into the tapered section is pressed into the slit and flows out of the slit, and the air flow rate of the natural wind is accelerated, and is at the front end of the casing 10. That is, a negative pressure is formed at the air supply region X of the first air supply port 11 and the second air supply port 21, and more air located at the rear side of the casing 10 flows from the second air inlet port 20 into the heat exchange air channel 1100 under the action of the pressure.
  • heat exchange with the heat exchanger forms heat exchange air to flow out from the second air supply port 21, and the mixed air zone X obtains a moderate temperature mixed air and sends it to the air-conditioned room, and the user feels comfortable.
  • the first air supply opening 11 extends along the frame of the casing 10 and surrounds each of the heat exchange air passages 1100, and likewise, the first air supply opening 11 opened on either side faces the heat exchange air passage 1100. It is ensured that the mixed flow area X can be formed at the front end of each heat exchange air passage 1100, and the air supply with moderate temperature is obtained.
  • the structure of the first sub-duct A1 is described in detail as shown in FIGS. 1 to 5.
  • the first sub-duct A1 is mainly composed of the air guide cylinders 3-5. Under certain conditions, the structural strength of the air duct 3-5 itself is not satisfactory, and a support structure 3-3 is also provided.
  • the support structure 3-3 is made of a material having a stronger strength and a certain degree of flexibility, and a metal or non-metal material may be selected.
  • the support structure 3-3 is preferably cylindrical for connecting the air guide cylinder 3-5 and the housing 10.
  • the first sub-duct A1 is composed of the air guide cylinder 3-5 and the support structure 3-3.
  • 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 connected to the second sub- Wind tunnel A2.
  • a first air inlet 3-4 is opened on a side wall of the first sub air passage A1.
  • the inner diameter of the first sub-duct A1 gradually decreases from the first end 3-1 to the second end 3-2, and the plurality of first air inlets 3-4 surround the side wall of the first sub-duct A1. And evenly distributed along the first sub-duct A1.
  • the first air inlet 3-4 is preferably a plurality of evenly distributed air inlet holes.
  • Both the second air inlet 20 and the second air supply port 21 can be designed to be rectangular.
  • the second air inlet 20 and the second air supply port 21 may also be designed in a circular shape in consideration of aesthetic factors.
  • the second air passage B is entirely defined by the circular casing 10, and the heat exchanger is disposed at the In the second duct B, the draft area of the heat exchanger is also preferably 80% to 90% of the cross-sectional area of the second duct B.
  • the heat exchanger is preferably arranged concentrically with the circular housing 10, which surrounds the second air duct B.
  • the housing 10 has an annular frame, the annular frame is a hollow structure to define a second sub-duct A2 located in the housing 10, and air flows along the second sub-duct A2 from the rear end of the housing 10 toward the front end of the housing 10,
  • the second sub-duct A2 forms a continuous circular first air supply opening 11 at the front end of the casing 10 along the frame of the annular casing 10.
  • the opening direction of the first air supply opening 11 faces the second air supply opening 21 of the second air passage B, and is substantially flush with the second air supply opening 21.
  • the basic structure of the first air supply opening 11 having a slit shape in this embodiment is the same as that of the first embodiment, and details are not described herein again.
  • the housing 10 can be designed in other shapes depending on the interior decoration style.
  • the wall-mounted air conditioner indoor unit disclosed in the present invention can adjust the appearance of the casing according to the needs of use.
  • the number of heat exchangers can be adjusted according to the air conditioning capacity required by the air-conditioned room to ensure the air-conditioning efficiency and meet various requirements of the user.
  • the air supply of the double air duct can improve the user's comfort while ensuring a sufficiently long air supply path.
  • the fan disposed in the first sub air duct does not occupy the housing space, and the thickness of the air conditioner can be significantly reduced.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)

Abstract

一种壁挂式空调器室内机，包括第一风道（A）和第二风道（B），其中第一风道（A）包括沿空气流动方向依次设置的第一子风道（A1）和第二子风道（A2），第一子风道（A1）形成在壳体（10）外侧，第二子风道（A2）形成在壳体（10）中，第一子风道（A1）中设置有风扇（4）；第二风道（B）中设置有换热器（2）；经由第一风道（A）送出的空气和经由第二风道（B）送出的空气在壳体（10）前端混风。该壁挂式空调器室内机可以根据使用需要调整壳体（10）的外观，根据空调房间需要的空调能力调整换热器（2）的数量；双风道送风可以提高用户舒适性，同时保证足够长的送风路径，设置在第一子风道（A1）中的风扇不占用壳体（10）空间，可以显著降低空调器厚度。

Description

壁挂式空调器室内机 技术领域
本发明涉及空气调节技术领域，尤其涉及一种壁挂式空调器室内机。
背景技术
现有壁挂式空调器室内机趋向于小型化超薄化设计，同时从性能上考虑要求其内部流道合理顺畅且有一定的静压恢复空间。这对于壁挂式空调器室内机的风道设计是一个极大的挑战。如果送风风道相对较长，则送风风量较大、噪音较低、风速适中，但是小型化超薄的壳体中又很难形成较长的送风风道。
现有技术中为解决上述问题，均是对室内机出风口的导风板的结构调整来延长送风风道，增加送风距离。一种常见的做法是延长导风板的宽度，这种方式中导风板最大宽度与出风口的宽度一致，延长距离有限，另一种做法是如申请人的在先申请(申请号201310106563.4)公开的技术方案，在空调器出风口处设置上、下两个导板，将壁挂式空调器的送风***出风口延长。这种方式虽然可以显著的增加送风风道的长度，但是室内机壳体尺寸无法进一步缩小，开机时，向外延伸的导风板增大了空调器的宽度。这种设计与小型化超薄化的设计原则相悖。
综上所述，现有技术中的壁挂式空调器存在无法达到小型化设计和送风风道平衡的问题。
发明内容
本发明公开一种壁挂式空调器室内机，旨在通过全新的结构设计，实现超薄化设计和良好的送风效果的平衡。
本发明提供一种壁挂式空调器室内机，包括第一风道和第二风道，其中所述第一风道包括沿空气流动方向依次设置的第一子风道和第二子风道，所述第一子风道形成在壳体外侧，所述第二子风道形成在所述壳体中，所述第一子风道中设置有风扇；所述第二风道中设置有换热器；经由所述第一风道送出的空气和经由所述第二风道送出的空气在所述壳体前端混风。
进一步的，所述第一风道具有第一送风口，所述第一送风口形成在所述 第二子风道沿空气流动方向的末端，所述第一送风口为弧形壁板围成的狭缝。
进一步的，所述第一送风口围绕所述第二风道设置，所述第一送风口朝向第二送风口，所述第二送风口形成在所述第二风道沿空气流动方向的末端。
更进一步的，所述第一送风口由相向设置的第一弧形壁板和第二弧形壁板围成，所述第一弧形壁板的曲率小于第二弧形壁板的曲率，所述第一弧形壁板后端和所述第二弧形壁板后端之间的距离小于所述第一弧形壁板中点和第二弧形壁板中点之间的距离，所述第一弧形壁板的前端设置在第二弧形壁板的前端外侧，所述第一送风口形成在所述第一弧形壁板的前端和所述第二弧形壁板的前端之间。
进一步的，所述第二风道包括多个热交换风道，每一个所述热交换风道中设置有一段热交换器，每一个所述热交换风道沿空气流动风向的末端形成有一个第二送风口，所述第一送风口围绕所述热交换风道的第二送风口设置。
进一步的，所述第一子风道的内径自所述第一端向第二端逐渐减小，多个所述第一进风口环绕开设在所述第一子风道的侧壁上，并沿所述第一子风道均匀分布。
进一步的，第二进风口形成在所述第二风道沿空气流动方向的始端，所述第二进风口位于所述壳体的后端。
可选的，所述第二进风口和第二送风口为矩形。
可选的，所述第二进风口和第二送风口为圆形。
本发明所公开的壁挂式空调器室内机，可以根据使用需要调整壳体的外观。可以根据空调房间需要的空调能力调整换热器的数量，保证空调效率，满足用户多种要求。双风道送风可以提高用户舒适性，同时保证足够长的送风路径，设置在第一子风道中的风扇不占用壳体空间，可以显著降低空调器厚度。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下 面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本发明所公开的壁挂式空调器室内机一种实施例的风道示意图；
图2为图1所示的壁挂式空调器室内机的结构示意图；
图3为图2的***图；
图4为设置有三个换热器的壁挂式空调器的结构示意图；
图5为图4的***图
图6为本发明所公开的壁挂式空调器室内机另一种实施例的结构图；
图7为图6的***图；
图8为图6所示的壁挂式空调器室内机的风道示意图；
图9为图6的俯视图；
图10为图1至图9所示的壁挂式空调器室内机中第一送风口的结构示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
首先，对具体实施方式中涉及到的技术术语作一简要说明。在具体实时方式中提到每个结构件的前、后、上、下、左、右等方位时，如果没有特别说明，是以结构件正常使用状态下相对于使用者的位置来定义的。而且，需要说明的是，用“前、后、上、下、左、右”等指代方位的词汇，仅是为了便于描述和理解，而不是指示或者暗示所指的装置或结构件必须具有特定的方位，以特定的方位构造和操作，因此不能理解为对发明技术方案的限制。下述热交换空气是指与换热器换热后的流动空气，自然风是指来自空调房间的自然温度的流动空气，是相对于经过换热器换热后的流动热交换空气而言的。混合风是指与换热器换热后的热交换空气和自然风混合形成的混合流动空气。
参见图1至图5及图10所示为本发明所公开的壁挂式空调器室内机一 种具体实施方式的结构示意图。如图所示，在本实施例所公开的壁挂式空调器室内机中限定有第一风道A和第二风道B。具体来说，第一风道A是通过空调器室内机壳体10和设置在壳体10外部的导风管3-5限定的空气流动路径，第二风道B是通过壳体10独立限定空气流动的路径。其中第一风道A包括沿自然风流动方向依次形成的第一子风道A1和第二子风道A2。第一子风道A1和第二子风道A2连通。第一子风道A1形成在壳体10外侧，优选形成在导风管3-5或导风管3-5和导风管3-5的支撑结构3-3之中。第二子风道A2形成在所述壳体10中，并整体分布在壳体10的中空内腔中。在第一子风道A1中设置有风扇4，风扇4优选为离心风扇4。由于将风扇4从空调壳体10中移动至第一子风道A1中，因此可以有效地减小壳体10的厚度，使得壳体10更为轻薄小巧，甚至可以实现真正意义上的超薄设计，整体厚度在20cm左右。
第二风道B整体由壳体10限定。换热器2设置在第二风道B中。换热器2的引风面面积优选为第二风道B横截面积的80％至90％。壳体10环绕第二风道B设置，壳体10内壁限定第二风道B的形态。本实施例所公开的壁挂式空调器室内机运行时，设置在第一子风道A1中的风扇4运行，将空调房间中的自然风引入至第一子风道A1，经由第一子风道A1,第二子风道A2流入壳体10中，并从壳体10前端流出，送风流程长。同时，经由第二风道B和换热器2热交换后的热交换空气也从壳体10前端流出，经由第一风道A送出的空气和经由第二风道B送出的空气在壳体10前端X处混风。第二风道B具有第二进风口20，第二进风口20形成在第二风道B沿空气流动方向的始端，第二进风口20位于壳体10的后端，远离混风区域X设置。与第一风道A相比，第二风道B的路径相对较短，热交换空气的热量损失小，与自然风混合后形成温度适宜的空气送入空调房间中，提高空调房间用户的舒适性。
在实际使用的过程中，第二风道B中可以设置有多个换热器，以满足不同空调能力的需要。在结构设计上，为了配合多个换热器的使用需求，第二风道B包括多个热交换通道。在每一个热交换通道中设置一个换热器。多个热交换通道的进风口和送风口分别位于壳体10的同一侧。图中分别示出了设置有两个换热器和三个换热器的壁挂式空调器室内机。如图1至图3所示，以设置两个热交换通道为例具体介绍风道的路径设计。为了配合两个换热器 (如图所示2-1和2-2)，壳体10具有对称设置且相互连接的两个矩形框架，每一个矩形框架的内部均为中空结构，中空结构分别限定出一条位于壳体10中的第二子风道A2。第一子风道A1和两条第二子风道A2的连通点大致位于壳体10的中线上，优选位于壳体10的中线上。经由第一子风道A1流入的自然风在连通点处分成支路分别流入两条第二子风道A2中。空气沿第二子风道A2自壳体10后端向壳体10前端流动。第二子风道A2沿壳体10框架在壳体10前端形成有至少一个第一送风口11。
如图所示，第一送风口11优选沿壳体10框架前端延伸并环绕每一条热交换风道1100，开设在任意一侧的第一送风口11均朝向热交换风道1100，优选朝向形成在热交换风道1100沿空气流动方向末端的第二送风口21且基本与第二送风口21平齐。为优化引风效果，第一送风口11为弧形壁板围成的狭缝。弧形壁板同时围成壳体10矩形框架中的中空结构，狭缝的位置基本与第二送风口21的位置平齐，优选与第二送风口21的位置平齐。参见图10所示，第一送风口11由相向设置的第一弧形壁板11-1和第二弧形壁板11-2围成，第一弧形壁板11-1的曲率小于第二弧形壁板11-2的曲率。第一弧形壁板11-1的前端11-3和第二弧形壁板11-2的前端11-4沿相反的方向延伸，第一弧形壁板11-1前端设置在第二弧形壁板11-2的前端11-4外侧，第一送风口11形成在第一弧形壁板11-1的前端11-3和第二弧形壁板11-2的前端11-4之间，通过第一弧形壁板11-1的前端11-3和第二弧形壁板11-2的前端11-4共同限定送风的流动方向。优选的，第一弧形壁板11-1的圆弧角为120°至140°，第二弧形壁板11-2的圆弧角为100°至115°。第一弧形壁板11-1后端和所述第二弧形壁板11-2后端之间的距离小于所述第一弧形壁板11-1中点和第二弧形壁板11-2中点之间的距离，即弧形壁板围成的中空腔体为自后向前先渐扩再渐缩的结构。空调器室内机运行时，设置在第一子风道A1中的风扇4运行，将空调房间中的自然风引入至第一子风道A1，经由第一子风道A1和第二子风道A2流入壳体10中，并流动至环绕第二送风口21分布的第一送风口11处。由于第一弧形壁板11-1围成的中空腔体为自后向前先渐扩再渐缩的结构，所以，从如图所示I处流入的空气受到压迫向弧形壁板的中点处流动，由于腔体先渐扩再渐缩，进入渐缩段相互挤压的空气受压迫进入狭缝中，并由狭缝流出，自然风的空气流速加快，并在壳体10前端，即第一送风口11和第二送风口21混风区域X处形成负压， 在压力的作用下，更多位于壳体10后侧的空气从第二进风口20流入热交换风道1100并沿热交换风道1100流动，与换热器热交换形成热交换空气从第二送风口21流出，混风区域X得到温度适中的混风并送向空调房间，用户感到舒适。
如图4和图5所示，还可以设置有三个换热器(如图所示2-1，2-2和2-3)，或者更多个换热器。在这种应用场景下，第一送风口11沿壳体10框架延伸并环绕每一个热交换风道1100，且同样的，开设在任意一侧的第一送风口11均朝向热交换风道1100，保证在每一个热交换风道1100的前端均能形成混流区域X,并得到温度适中的送风。
如图1至图5所示详细介绍第一子风道A1的结构。第一子风道A1主要由导风筒3-5构成。在某些条件下，导风筒3-5本身的结构强度不满足需要，还设置有支撑结构3-3。支撑结构3-3选择强度更好且一定程度可弯曲的材料制成，可以选用金属或非金属材料。支撑结构3-3优选为圆筒形用于连接导风筒3-5和壳体10。设置有支撑结构3-3时，第一子风道A1由导风筒3-5和支撑结构3-3共同构成。具体来说，第一子风道A1包括第一端3-1和第二端3-2，其中第一端3-1固定在空调房间的内壁上，第二端3-2连通第二子风道A2。在第一子风道A1的侧壁上开设有第一进风口3-4。为了提高第一子风道A1和墙壁连接的结构强度，保证一定的接触面积，同时减小气流的损失。第一子风道A1的内径自所述第一端3-1向第二端3-2逐渐减小，多个第一进风口3-4环绕开设在第一子风道A1的侧壁上，并沿第一子风道A1均匀分布。第一进风口3-4优选为多个均匀分布的进风孔，
第二进风口20和第二送风口21均可以设计为矩形。考虑到美观的因素，第二进风口20和第二送风口21也可以设计为圆形。如图6至图9所示，在本发明所公开的壁挂式空调器室内机的第二种具体实施方式中，第二风道B整体由圆形壳体10限定，换热器设置在第二风道B中，换热器的引风面积同样优选为第二风道B截面积的80％至90％。换热器优选与圆形壳体10同心设置，壳体10环绕第二风道B。壳体10具有环形框架，环形框架为中空结构以限定出位于壳体10中的第二子风道A2，空气沿第二子风道A2自壳体10后端向壳体10前端流动，第二子风道A2沿环形壳体10框架在壳体10前端形成连续的圆形第一送风口11。第一送风口11的开口方向朝向第二风道B的第二送风口21，且基本与第二送风口21平齐。如图10所示，本 实施例中呈狭缝状的第一送风口11的基本结构与第一实施例一致，在此不再赘述。除了设计为圆形之外，还可以根据室内装修风格，将壳体10设计为其它形状。
本发明所公开的壁挂式空调器室内机，可以根据使用需要调整壳体的外观。可以根据空调房间需要的空调能力调整换热器的数量，保证空调效率，满足用户多种要求。双风道送风可以提高用户舒适性，同时保证足够长的送风路径，设置在第一子风道中的风扇不占用壳体空间，可以显著降低空调器厚度。
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (10)

  1. 一种壁挂式空调器室内机，其特征在于，包括第一风道和第二风道，其中所述第一风道包括沿空气流动方向依次设置的第一子风道和第二子风道，所述第一子风道形成在壳体外侧，所述第二子风道形成在所述壳体中，所述第一子风道中设置有风扇；所述第二风道中设置有换热器；经由所述第一风道送出的空气和经由所述第二风道送出的空气在所述壳体前端混风。
  2. 根据权利要求1所述的壁挂式空调器室内机，其特征在于，所述第一风道具有第一送风口，所述第一送风口形成在所述第二子风道沿空气流动方向的末端，所述第一送风口为弧形壁板围成的狭缝。
  3. 根据权利要求2所述的壁挂式空调器室内机，其特征在于，所述第一送风口围绕所述第二风道设置，所述第一送风口朝向第二送风口，所述第二送风口形成在所述第二风道沿空气流动方向的末端。
  4. 根据权利要求3所述的壁挂式空调器室内机，其特征在于，所述第一送风口由相向设置的第一弧形壁板和第二弧形壁板围成，所述第一弧形壁板的曲率小于第二弧形壁板的曲率，所述第一弧形壁板后端和所述第二弧形壁板后端之间的距离小于所述第一弧形壁板中点和第二弧形壁板中点之间的距离，所述第一弧形壁板的前端设置在第二弧形壁板的前端外侧，所述第一送风口形成在所述第一弧形壁板的前端和所述第二弧形壁板的前端之间。
  5. 根据权利要求4所述的壁挂式空调器室内机，其特征在于，所述第二风道包括多个热交换风道，每一个所述热交换风道中设置有一段热交换器，每一个所述热交换风道沿空气流动风向的末端形成有一个第二送风口，所述第一送风口围绕所述热交换风道的第二送风口设置。
  6. 根据权利要求5所述的壁挂式空调器室内机，其特征在于，所述第一子风道的第一端固定在空调房间的内壁上，第二端连通第二子风道，所述第一子风道的侧壁上开设有第一进风口。
  7. 根据权利要求6所述的壁挂式空调器室内机，其特征在于，所述第一子风道的内径自所述第一端向第二端逐渐减小，多个所述第一进风口环绕开设在所述第一子风道的侧壁上，并沿所述第一子风道均匀分布。
  8. 根据权利要求7所述的壁挂式空调器室内机，其特征在于，第二进风口形成在所述第二风道沿空气流动方向的始端，所述第二进风口位于所述壳体的后端。
  9. 根据权利要求8所述的壁挂式空调器室内机，其特征在于，所述第二进风口和第二送风口为矩形。
  10. 根据权利要求8所述的壁挂式空调器室内机，其特征在于，所述第二进风口和第二送风口为圆形。
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