WO2017206672A1 - 一种送风系统及应用其的室内机和空调 - Google Patents

一种送风系统及应用其的室内机和空调 Download PDF

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Publication number
WO2017206672A1
WO2017206672A1 PCT/CN2017/083548 CN2017083548W WO2017206672A1 WO 2017206672 A1 WO2017206672 A1 WO 2017206672A1 CN 2017083548 W CN2017083548 W CN 2017083548W WO 2017206672 A1 WO2017206672 A1 WO 2017206672A1
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Prior art keywords
fan
air
supply system
air supply
outlet
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PCT/CN2017/083548
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English (en)
French (fr)
Inventor
何振健
刘明校
程春雨
林金煌
肖林辉
陈诚
赖聪
吕千浩
朱日荣
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珠海格力电器股份有限公司
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Publication of WO2017206672A1 publication Critical patent/WO2017206672A1/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
    • F24F7/00—Ventilation
    • F24F7/007—Ventilation with forced flow
    • F24F7/013—Ventilation with forced flow using wall or window fans, displacing air through the wall or window
    • 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
    • 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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • 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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/081—Air-flow control members, e.g. louvres, grilles, flaps or guide plates for guiding air around a curve
    • 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
    • F24F13/20—Casings or covers

Definitions

  • the invention relates to the technical field of air conditioners, in particular to an air supply system and an indoor unit and an air conditioner using the same.
  • FIG. 1 Taking a common vertical air conditioner cabinet as an example, as shown in FIG. 1 , it is formed by longitudinally arranging three centrifugal fans, wherein the upper fan 1 and the middle fan 2 are both sent out through the upper air outlet of the body. .
  • the air outlets of the upper fan 1 and the middle fan 2 are staggered: the air blow of the middle fan 2 needs to flow upward through a vertical air duct, and The air from the upper fan 1 is sent to the outside through the upper air outlet of the body.
  • the middle fan 2 has a large wind resistance due to structural constraints, such as the above-mentioned vertical air passage, and its air blowing efficiency is not high.
  • the air blower of the air blower 2 passes through the air duct and is vertically upward, so that the air blower 2 is out of the air when the air outlet is on the air conditioner, thereby causing the air outlet of the air conditioner to be exhausted upward. In this way, during the heating operation of the air conditioner, the hot air cannot be sent downward, resulting in a low temperature in the lower layer of the heating room and uneven temperature layer.
  • the present invention provides an air supply system, which optimizes the air outlet vent design and utilizes the action of the suction in the same direction fluid flow, thereby providing the first fan air outlet to assist the second fan air outlet inward.
  • the effect of the second fan is improved.
  • the present invention also provides an indoor unit to which the above air supply system is applied.
  • the present invention also provides an air conditioner to which the above air supply system is applied.
  • the present invention provides the following technical solutions:
  • An air supply system includes a first fan and a second fan that supply air to the same air outlet, and the The distance from a fan to the air outlet is smaller than the distance from the second fan to the air outlet;
  • a flow guiding passage is provided between the duct outlet of the second fan and the inside of the duct of the first fan.
  • the flow guiding path is connected between the air duct outlet of the second fan and the air passage end of the first fan.
  • the first fan is a centrifugal fan
  • the flow guiding path is connected to a diffuser section of the volute air outlet of the centrifugal fan.
  • a duct outlet of the second fan is disposed at an outer casing of the first fan, and a casing of the first fan is provided with a notch, and the air gap exit of the notch and the second fan The flow guiding path is formed between.
  • the first fan is a centrifugal fan
  • the notch is opened in a diffuser section of the volute air outlet of the centrifugal fan.
  • the second fan is a centrifugal fan.
  • the first fan is an upper fan
  • the second fan is an intermediate fan whose installation position is lower than the upper fan, and the same air outlet is higher than an upper air outlet of the upper fan.
  • the utility model further comprises a lower fan installed lower than the middle fan, and the lower fan can supply air to the lower air outlet below it.
  • An indoor unit includes an air supply system, and the air supply system is the air supply system described above.
  • An air conditioner includes an air supply system, and the air supply system is the air supply system described above.
  • the air supply system provided by the present invention has a large wind resistance due to the structural limitation of the second fan far from the air outlet, and the wind speed when the air reaches the first fan position is lower than the first wind turbine.
  • the wind speed of the wind of a fan; the solution is provided with a flow guiding passage between the air duct outlet of the second fan and the air duct of the first fan, and the second fan is used by the suction of the same fluid flow.
  • the airflow is sucked into the first fan, so that the air blow of the first fan assists the airflow of the second fan to guide the flow inward, and the air volume of the second fan has a certain improvement effect.
  • the present invention also provides an indoor unit and an air conditioner to which the above air supply system is applied.
  • FIG. 1 is a schematic structural view of an air conditioning duct in the prior art
  • FIG. 2 is a schematic diagram of a gap position of an air conditioning duct and an upper fan diffusing section according to an embodiment of the present invention
  • Figure 3 is a partial enlarged structural view of the upper fan of the upper fan before the digging of the notch;
  • Figure 4 is a partial enlarged structural view of the upper fan of the upper fan after digging the gap
  • FIG. 5 is a schematic diagram of gas flow of an air passage of an air conditioner according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram of gas flow of an external air outlet of an air conditioner according to an embodiment of the present invention.
  • 1 is the upper fan
  • 2 is the middle fan
  • 3 is the lower fan
  • 4 is the gap.
  • the core of the invention is to disclose a ventilation system, which optimizes the design of the air outlet of the air duct and utilizes the action of suction when the fluid flows in the same direction, thereby assisting the air outlet of the first fan to assist the air outlet of the second fan.
  • the effect is to adjust the direction of the wind and achieve a certain improvement effect on the air volume of the second fan.
  • the air supply system provided by the embodiment of the present invention includes a first fan and a second fan that supply air to the same air outlet, and the distance from the first fan to the air outlet is smaller than the distance from the second fan to the air outlet; the first fan and The second fan has its own air duct, and the air passages of both guide to the same air outlet;
  • the core improvement is that a flow guiding passage is provided between the duct outlet of the second fan and the inside of the duct of the first fan (i.e., the gas flow passage surrounded by the side wall of the duct).
  • a flow guiding passage is provided between the duct outlet of the second fan and the inside of the duct of the first fan (i.e., the gas flow passage surrounded by the side wall of the duct).
  • one end of the duct is connected to the air duct outlet of the second fan, and the other end is connected to the inside of the air duct of the first fan, that is, the air duct exit from the second fan is connected to the inside of the air duct of the first fan via the duct.
  • the air duct outlet of the second fan may be disposed at the outer casing of the first fan, and a gap is formed in the casing of the first fan, that is, the second fan is formed
  • the air duct outlet communicates with the flow guiding passage inside the air passage of the first fan via the above-mentioned gap.
  • the air supply system provided by the embodiment of the present invention has a large wind resistance due to structural limitation of the second fan far from the air outlet, and the wind speed when the air reaches the first fan position. It will be lower than the outlet wind speed of the first fan; this solution provides a flow guiding path between the air duct outlet of the second fan and the air duct of the first fan, thereby utilizing the action of suction in the same direction fluid flow, thereby The second fan exhaust airflow is adsorbed into the first fan, thereby the effect of the first fan outlet to assist the second fan to direct the inflow of the wind, and the air volume of the second fan has a certain improvement effect;
  • the air outlet directions of the first fan and the second fan are staggered differently, and the air outlet of the air duct of the first fan which is closer to the air outlet directly points to the ideal air outlet direction, thereby realizing the adjustment.
  • the second fan is in the direction of the wind.
  • the flow guiding passage is connected between the air duct outlet of the second fan and the end of the air passage of the first fan, and the position of the air outlet of the first fan duct is an optimal position for connecting the air guiding passage, and the wind speed and direction thereof Both are ideal and can provide a good diversion effect on the outlet of the second fan.
  • the first fan is a centrifugal fan, and the diversion path is connected to the diffuser section of the volute outlet of the centrifugal fan.
  • the air output of the second fan reaches the notch position of the diffusing section of the air outlet of the first fan volute, and is inhaled by the first fan.
  • the diffuser section of the air outlet of a fan changes the direction of gas flow under the influence of the Coanda effect; at the same time, because of the design of the notch of the diffuser section of the outlet of the first fan volute, the air volume of the second fan increases, and thus the Second fan air volume.
  • the first fan can also adopt other types of fans, such as axial fans, and the connection position of the flow guiding path thereon is not limited to the last stage, as long as the wind speed is higher than the part of the second fan.
  • the flow guiding path can be connected by a pipe.
  • the air duct outlet of the second fan is disposed at the outer casing of the first fan, and the casing of the first fan is provided with a notch 4, that is, between the notch 4 and the air duct outlet of the second fan.
  • the above-described flow guiding path is formed.
  • the notch 4 directly on the first fan casing, the introduction of an additional physical connecting pipe is avoided, the structure is simple, the wind resistance is not increased, the air volume is reduced, the processing is easy, and the existing product can be directly modified.
  • the first fan is a centrifugal fan
  • the notch 4 is opened in the diffuser section of the volute air outlet of the centrifugal fan, and the air outlet space of the second fan is increased by the design, thereby improving the second
  • the air volume of the fan can be as shown in Figure 2 to Figure 4.
  • the air duct outlet of the second fan may be disposed at a diffuser section of the volute air outlet of the first fan.
  • the second fan is a centrifugal fan, which can better meet the requirements of the device for air supply.
  • Pass The design of the air outlet of the centrifugal air duct is optimized, and the low pressure of the diffuser section of the centrifugal volute outlet of the upper fan 1 is utilized, and the air blown by the fan 2 is adsorbed, thereby adjusting the direction of the wind and achieving a certain lifting effect of the air volume of the center fan 2 .
  • the wind speed of the upper fan 1 is higher than that of the middle fan 2, and the air flow of the air outlet is lower than that of the middle fan 2 fluid flowing through the position. Therefore, the air flow of the middle fan 2 is adsorbed inward.
  • the first fan is the upper fan 1
  • the second fan is the middle fan 2 with the installation position lower than the upper fan 1
  • the same air outlet is higher than the upper fan 1 .
  • the upper fan 1 and the intermediate fan 2 are both centrifugal fans.
  • FIG. 3 and FIG. 4 are schematic diagrams showing the position of the notch opening position, and the position designing position of the diffusing section of the upper centrifugal fan (ie, the upper fan 1) is illustrated.
  • the optimal position is at the position of the upper air outlet of the centrifugal air duct, and the action of the suction in the same direction of the fluid flow is utilized, thereby achieving the effect of the air outlet of the fan 2 in the air outlet assisted by the upper fan 1 and the upper fan 1
  • the air After the air is collected, it enters the diffuser section of the upper air outlet of the centrifugal fan, and is transformed from the vertical upward to the plane forward under the influence of the wall effect.
  • the gas flow is shown in Fig. 5.
  • Subsequent use of the air outlet air deflector to achieve oblique upward air, horizontal air or oblique downward air as required.
  • the air outlet space of the middle fan is increased, and the air volume of the middle fan is increased.
  • the air supply system provided by the embodiment of the present invention further includes a lower fan 3 whose installation position is lower than that of the middle fan 2, and the lower fan 3 can supply air to the lower air outlet below it.
  • the air outlet mode is enriched, and the heat exchange effect is better.
  • the arrangement of the fan is not limited to this.
  • the first fan and the second fan can supply air to the same lower air outlet, or can be installed on the same horizontal surface, and supply air to the same air outlet on the left or right side. and many more.
  • the embodiment of the present invention further provides an indoor unit, including a air supply system, and the core improvement point is that the air supply system is the above air supply system, such as the vertical cabinet machine shown in FIG.
  • An embodiment of the present invention further provides an air conditioner, including an air supply system, the core improvement of which is that the air supply system is the air supply system described above; and includes an integrated type and a split type, such as the above indoor unit.
  • the embodiment of the present invention provides a ventilation system, which is particularly suitable for a centrifugal air duct, and a gap is formed at a diffusing section of the air outlet of the upper centrifugal fan volute, so that the intermediate fan reaches the upper centrifugal fan.
  • the volute air outlet When the volute air outlet is in the notch position of the diffuser section, it is sucked into the diffuser section of the air outlet of the centrifugal fan by the wind blower of the upper fan, and is transformed from the vertical upward to the plane forward under the influence of the Coanda effect;
  • the design of the notch of the diffuser section of the air outlet of the centrifugal fan volute increases the air outlet space of the middle fan. And increase the air volume of the fan.
  • the embodiment of the invention further provides an indoor unit and an air conditioner using the air supply system.

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  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
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Abstract

一种送风系统，特别适用于离心风道，通过在上离心风机（1）蜗壳出风口扩压段处开设一缺口（4），使得中风机（2）出风到达上离心风机（1）蜗壳出风口扩压段缺口（4）位置时，受上离心风机（1）出风作用，被吸入上离心风机（1）出风口扩压段，并在附壁效应的影响下由竖直向上转变为平面向前吹出；同时因为上离心风机（1）蜗壳出风口扩压段缺口的设计，使得中风机（2）出风空间增大，进而提升中风机（2）风量。还公开了一种应用送风系统的室内机和空调。

Description

一种送风系统及应用其的室内机和空调
本申请要求于2016年06月01日提交中国专利局、申请号为201610383218.9、发明名称为“一种送风系统及应用其的室内机和空调”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及空调技术领域，特别涉及一种送风系统及应用其的室内机和空调。
背景技术
为了增大风量以提高换热效果，目前已经设计出了新型的空调，其具有多个风机经由同一个出风口进行出风。但是经过实践发现，采用现有结构中多个风机的送风系统配合方式，其出风效果还不是十分理想。
以常见的立式空调柜机为例，如图1所示，其由三个离心风机纵向排列组合而成，其中的上风机1和中风机2均为经由机体的上出风口向外送风。为了保证中风机2有单独的出风空间，上风机1和中风机2这两者的出风道是错开设计的：中风机2的出风需要经过一段竖直的风道向上流动后，与上风机1的出风一同经由机体的上出风口向外送风。
中风机2因结构限制存在较大的风阻，比如上述竖直风道的作用，其出风效率也不高。另外，中风机2的出风经过其上述风道后方向为沿竖直向上，使得在空调上出风口时存在中风机2出风偏上的情况，从而导致空调上出风口出风整体偏上；这样一来，在空调制热运行时，将会导致热风无法向下送，导致制热房间下层温度低，温度层不均匀。
发明内容
有鉴于此，本发明提供了一种送风系统，通过优化风道出风口设计，利用同向流体流动时相吸的作用，从而起到第一风机出风辅助第二风机出风向内导流的效果，进而达到对第二风机风量的提升效果。
本发明还提供了一种应用上述送风系统的室内机。
本发明还提供了一种应用上述送风系统的空调。
为实现上述目的，本发明提供如下技术方案：
一种送风系统，包括向同一出风口送风的第一风机和第二风机，且所述第 一风机到所述出风口的距离，小于所述第二风机到所述出风口的距离；
在所述第二风机的风道出口和所述第一风机的风道内部之间设置有导流通路。
优选的，所述导流通路连通于所述第二风机的风道出口和所述第一风机的风道末段之间。
优选的，所述第一风机为离心风机，所述导流通路连接于所述离心风机的蜗壳出风口扩压段。
优选的，所述第二风机的风道出口设置在所述第一风机的外壳处，所述第一风机的壳体上开设有缺口，在所述缺口和所述第二风机的风道出口之间形成所述导流通路。
优选的，所述第一风机为离心风机，所述缺口开设在所述离心风机的蜗壳出风口扩压段。
优选的，所述第二风机为离心风机。
优选的，所述第一风机为上风机，所述第二风机为安装位置低于所述上风机的中风机，所述同一出风口为高于所述上风机的上出风口。
优选的，还包括安装位置低于所述中风机的下风机，所述下风机能够向低于其的下出风口送风。
一种室内机，包括送风系统，所述送风系统为上述的送风系统。
一种空调，包括送风系统，所述送风系统为上述的送风系统。
从上述的技术方案可以看出，本发明提供的送风系统，离出风口较远的第二风机因结构限制存在较大的风阻，其出风到达第一风机位置时的风速会低于第一风机的出风风速；本方案通过在第二风机的风道出口和第一风机的风道内部之间设置有导流通路，利用同向流体流动时相吸的作用，从而使得第二风机出风气流往第一风机内吸附，从而起到第一风机出风辅助第二风机出风向内导流的效果，对第二风机风量有一定的提升效果。本发明还提供了一种应用上述送风系统的室内机和空调。
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简单地介绍，显而易见地，下面描述 中的附图仅仅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的前提下，还可以根据这些附图获得其他的附图。
图1为现有技术中的空调风道的结构示意图；
图2为本发明实施例提供的空调风道及上风机扩压段缺口位置示意图；
图3为图1中上风机扩压段挖缺口前的局部放大结构示意图；
图4为图2中上风机扩压段挖缺口后的局部放大结构示意图；
图5为本发明实施例提供的空调内部风道的气体流动示意图；
图6为本发明实施例提供的空调外部出风的气体流动示意图。
其中，1为上风机，2为中风机，3为下风机，4为缺口。
具体实施方式
本发明的核心在于公开了一种送风系统，通过优化风道出风口设计，利用同向流体流动时相吸的作用，从而起到第一风机出风辅助第二风机出风向内导流的效果，进而调整出风方向并达到对第二风机风量有一定的提升效果。
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，所描述的实施例仅仅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做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。
本发明实施例提供的送风系统，包括向同一出风口送风的第一风机和第二风机，且第一风机到出风口的距离，小于第二风机到出风口的距离；第一风机和第二风机具有各自的风道，两者的风道均导向上述同一出风口；
其核心改进点在于，在第二风机的风道出口和第一风机的风道内部(即由风道侧壁在其内部围成的气体流动通道)之间设置有导流通路。比如，采用管道一端连通于第二风机的风道出口，另一端连通于第一风机的风道内部，即形成从第二风机的风道出口经由上述管道连通于第一风机的风道内部的导流通路；除了上述实体连接方式之外，还可以将第二风机的风道出口设置于第一风机的外壳处，并在第一风机的壳体上开设有缺口，即形成从第二风机的风道出口经由上述缺口连通于第一风机的风道内部的导流通路。
从上述的技术方案可以看出，本发明实施例提供的送风系统，离出风口较远的第二风机因结构限制存在较大的风阻，其出风到达第一风机位置时的风速 会低于第一风机的出风风速；本方案通过在第二风机的风道出口和第一风机的风道内部之间设置有导流通路，利用同向流体流动时相吸的作用，从而使得第二风机出风气流往第一风机内吸附，从而起到第一风机出风辅助第二风机出风向内导流的效果，对第二风机风量有一定的提升效果；
另外，鉴于空间布置的限制，第一风机和第二风机的出风方向是错开不同的，而离出风口较近的第一风机的风道出风口直接指向理想出风方向，进而实现了调整第二风机出风方向。
作为优选，导流通路连通于第二风机的风道出口和第一风机的风道末段之间，第一风机风道出风口位置处是导流通路连接的最佳位置，其风速和方向均为比较理想的，能够对第二风机的出风起到较好的导流效果。
具体的，第一风机为离心风机，导流通路连接于离心风机的蜗壳出风口扩压段。通过在第一风机蜗壳出风口扩压段处连接导流通路，使得第二风机出风到达第一风机蜗壳出风口扩压段缺口位置时，受第一风机出风作用，被吸入第一风机出风口扩压段，并在附壁效应的影响下改变气体流动方向；同时因为第一风机蜗壳出风口扩压段缺口的设计，使得第二风机出风空间增大，进而提升第二风机风量。当然，第一风机还可以采用其他形式的风机，如轴流风机等，导流通路在其上的连接位置也并不局限于末段，只要风速高于第二风机出风的部分就行。
导流通路可以采用管道连接的方式。为了进一步优化上述的技术方案，第二风机的风道出口设置在第一风机的外壳处，第一风机的壳体上开设有缺口4，即在缺口4和第二风机的风道出口之间形成上述的导流通路。本实施例通过直接在第一风机壳体上开缺口4的方式，避免了引入额外的实体连接管道，结构简单，没有增加风阻降低风量，易于加工实现，能够在现有产品上直接改造。
在本方案提供的具体实施例中，第一风机为离心风机，上述缺口4开设在离心风机的蜗壳出风口扩压段，通过此设计使得第二风机出风空间增大，进而提升第二风机风量，其结构可以参照图2-图4所示。第二风机的风道出口可以设置在第一风机的外壳处蜗壳出风口扩压段。
作为优选，第二风机为离心风机，能够更好满足设备对于送风的要求。通 过优化离心风道出风口设计，利用上风机1离心风道蜗壳出口扩压段的低压，吸附中风机2出风，进而调整出风方向并达到对中风机2风量有一定的提升效果。鉴于上风机1效率要高，中风机2因结构限制存在较大的风阻，上风机1出风风速要比中风机2高，其出风口气流要比中风机2流体流经此位置时要低，从而使得中风机2出风气流往内吸附。
如图2所示，在本方案提供的实施例中，第一风机为上风机1，第二风机为安装位置低于上风机1的中风机2，同一出风口为高于上风机1的上出风口。具体的，上风机1和中风机2均为离心风机。图3和图4为缺口开设位置对比示意图，示意出了上离心风机(即上风机1)扩压段位置缺口设计位置。其最佳位置为上离心风道出风口位置处，利用同向流体流动时相吸的作用，从而起到上风机1出风辅助中风机2出风向内导流的效果，并与上风机1出风汇集后一同进入上离心风机出风口扩压段，并在附壁效应的影响下由竖直向上转变为平面向前吹出，气体流动如图5所示。后续再利用出风口导风板按需求实现斜向上出风、水平出风或斜向下出风。同时因为上离心风机蜗壳出风口扩压段缺口的设计，使得中风机出风空间增大，进而提升中风机风量。
为了进一步优化上述的技术方案，本发明实施例提供的送风系统，还包括安装位置低于中风机2的下风机3，该下风机3能够向低于其的下出风口送风。通过增加下风机3丰富了出风方式，换热效果更好。当然，风机的设置方式并不仅仅局限于此，第一风机和第二风机可以为同一下出风口送风，或者安装在同一水平面上，向其左侧或者右侧的同一出风口送风，等等。
本发明实施例还提供了一种室内机，包括送风系统，其核心改进点在于，送风系统为上述的送风系统，如图2所示的立式柜机。
本发明实施例还提供了一种空调，包括送风系统，其核心改进点在于，送风系统为上述的送风系统；包括一体式，和分体式，例如上述室内机。
综上所述，本发明实施例提供了一种送风系统，特别适用于离心风道，通过在上离心风机蜗壳出风口扩压段处开设一缺口，使得中间风机出风到达上离心风机蜗壳出风口扩压段缺口位置时，受上风机出风作用，被吸入上离心风机出风口扩压段，并在附壁效应的影响下由竖直向上转变为平面向前吹出；同时因为上离心风机蜗壳出风口扩压段缺口的设计，使得中风机出风空间增大，进 而提升中风机风量。本发明实施例还提供了一种应用上述送风系统的室内机和空调。
本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (10)

  1. 一种送风系统，包括向同一出风口送风的第一风机和第二风机，且所述第一风机到所述出风口的距离，小于所述第二风机到所述出风口的距离；
    其特征在于，在所述第二风机的风道出口和所述第一风机的风道内部之间设置有导流通路。
  2. 根据权利要求1所述的送风系统，其特征在于，所述导流通路连通于所述第二风机的风道出口和所述第一风机的风道末段之间。
  3. 根据权利要求1所述的送风系统，其特征在于，所述第一风机为离心风机，所述导流通路连接于所述离心风机的蜗壳出风口扩压段。
  4. 根据权利要求1所述的送风系统，其特征在于，所述第二风机的风道出口设置在所述第一风机的外壳处，所述第一风机的壳体上开设有缺口(4)，在所述缺口(4)和所述第二风机的风道出口之间形成所述导流通路。
  5. 根据权利要求4所述的送风系统，其特征在于，所述第一风机为离心风机，所述缺口(4)开设在所述离心风机的蜗壳出风口扩压段。
  6. 根据权利要求1所述的送风系统，其特征在于，所述第二风机为离心风机。
  7. 根据权利要求1-6任意一项所述的送风系统，其特征在于，所述第一风机为上风机(1)，所述第二风机为安装位置低于所述上风机(1)的中风机(2)，所述同一出风口为高于所述上风机(1)的上出风口。
  8. 根据权利要求7所述的送风系统，其特征在于，还包括安装位置低于所述中风机(2)的下风机(3)，所述下风机(3)能够向低于其的下出风口送风。
  9. 一种室内机，包括送风系统，其特征在于，所述送风系统为如权利要求1-8任意一项所述的送风系统。
  10. 一种空调，包括送风系统，其特征在于，所述送风系统为如权利要求1-8任意一项所述的送风系统。
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