WO2022068576A1 - 空调室内机及其新风模块 - Google Patents

空调室内机及其新风模块 Download PDF

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Publication number
WO2022068576A1
WO2022068576A1 PCT/CN2021/118265 CN2021118265W WO2022068576A1 WO 2022068576 A1 WO2022068576 A1 WO 2022068576A1 CN 2021118265 W CN2021118265 W CN 2021118265W WO 2022068576 A1 WO2022068576 A1 WO 2022068576A1
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Prior art keywords
fresh air
flow channel
indoor unit
module
air
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PCT/CN2021/118265
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English (en)
French (fr)
Inventor
张展
王宁
刘祥宇
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青岛海尔空调器有限总公司
青岛海尔空调电子有限公司
海尔智家股份有限公司
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Publication of WO2022068576A1 publication Critical patent/WO2022068576A1/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
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0033—Indoor units, e.g. fan coil units characterised by fans having two or more fans
    • 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
    • F24F1/0035—Indoor units, e.g. fan coil units characterised by introduction of outside air to the room
    • 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
    • F24F1/0071—Indoor units, e.g. fan coil units with means for purifying supplied air
    • F24F1/0073—Indoor units, e.g. fan coil units with means for purifying supplied air characterised by the mounting or arrangement of filters
    • 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
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • 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
    • F24F13/28—Arrangement or mounting of filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements

Definitions

  • the invention relates to the technical field of air conditioners, in particular to an air conditioner indoor unit and a fresh air module thereof.
  • the main function of the fresh air system is to introduce outdoor fresh air into the room to improve the freshness of the indoor air and improve the indoor air quality.
  • the fresh air system is usually set up independently of the air conditioning system, and some fresh air systems can also be integrated into the air conditioner and exist as a functional module of the air conditioner.
  • the existing air conditioner with fresh air module usually has only a single air duct, which can only purify the outdoor air and input it into the room, and has a single function.
  • the fresh air module has the following three problems during operation: Targeted filtration of outdoor air quality results in frequent filter replacement and higher use costs; in winter, the outdoor temperature is low, and the ventilation process will reduce the indoor temperature and affect the user experience; the ventilation process is likely to cause indoor and outdoor pressure. Poor, making doors and windows difficult to open and close.
  • a first aspect of the present invention provides a fresh air module for an air conditioner indoor unit, the fresh air module includes a fresh air duct and a return air duct, and the fresh air duct is provided with There is a fresh air blower for promoting airflow, and a return air blower for promoting airflow is arranged in the return air duct, and the fresh air duct includes: a first flow duct in which a first filter member is arranged; and a second flow A channel, which is arranged in parallel with the first flow channel, and a second filter member is arranged in the second flow channel, wherein the first filter member and the second filter member have different filtration precisions; the fresh air The duct includes a fresh air inlet, and the fresh air duct is provided with a damper at the fresh air inlet, and the damper can block the first flow passage and/or the second flow passage.
  • a first flow channel and a second flow channel in parallel are arranged in the fresh air channel, and filter members with different filtering precision are arranged in the two flow channels, when the outdoor air quality is poor, it can pass the filter when the quality of the outdoor air is poor.
  • the outdoor air quality is better, select the air intake through the flow channel with low filtering precision, which can prolong the service life of each filter element, reduce the replacement frequency of the filter element, and thus reduce the cost of use.
  • the outdoor fresh air can be introduced into the room, and the indoor dirty air can be discharged to the outdoor at the same time, which not only helps to improve the ventilation efficiency, but also helps to maintain the indoor and outdoor air pressure balance. The problem of difficulty in opening and closing doors and windows, and the problem of large ventilation noise caused by air pressure difference.
  • independently controllable dampers can be set at the fresh air inlets of the first flow channel and the second flow channel;
  • the swing damper can selectively block the first flow channel or the second flow channel under the action of a swing mechanism, such as a structure in which a swing plate is connected to a rotating shaft.
  • the first filter member can be a high-efficiency filter member, a medium-efficiency filter member, a coarse-efficiency filter member, and the like
  • the second filter member can be a high-efficiency filter member, a medium-efficiency filter member, a coarse-efficiency filter member, and the like.
  • the first filter member is disposed at a position close to the upstream side of the first flow channel along the air flow direction;
  • the second filter member is provided at a position close to the upstream side of the second flow channel in the airflow direction.
  • the filter member By arranging the filter member at a position close to the upstream side of each flow passage in the airflow direction, the filtering efficiency can be improved, and the air passage can be kept clean.
  • the filter member may be disposed in any suitable position within each flow channel.
  • the filtering accuracy of the first filter member is greater than the filtering accuracy of the second filter member, and the cross-sectional size of the first flow channel is greater than that of the The cross-sectional dimension of the second flow channel.
  • the present invention can ensure sufficient air intake while obtaining high-precision filtering effect, and does not need to increase the air intake by increasing the rotational speed of the fan. Reduce system power consumption.
  • the fresh air module further includes an electric heater, and the electric heater is used to heat all or part of the airflow circulating in the fresh air duct.
  • the influence of outdoor low temperature on the indoor temperature during the ventilation process can be reduced when the outdoor temperature is low in winter, so that the indoor temperature can be maintained within a comfortable range, thereby improving user experience.
  • the electric heater includes a first electric heater and a second electric heater, the first electric heater is arranged in the first flow channel, and the first electric heater Two electric heaters are arranged in the second flow channel.
  • the fresh air can be heated during the process of entering the room from any one of the flow channels.
  • the first electric heater is disposed at a position of the first flow channel close to the downstream side along the airflow direction
  • the second electric heater is disposed at a position close to the downstream side of the second flow channel along the airflow direction.
  • the time for the heated air flow to remain in the air channel can be shortened, thereby reducing heat loss and improving heating efficiency.
  • the first flow channel and the second flow channel share the fresh air fan.
  • the hardware cost and the occupied installation space can be reduced, which is beneficial to the miniaturized design of the fresh air module.
  • the fresh air module includes a fresh air outlet, and the fresh air fan is arranged along the fresh air outlet and the first flow channel and the second flow channel. between the downstream side in the airflow direction.
  • the damper is configured with a switching mechanism, and the damper can selectively block the first flow passage or the first flow passage by means of the switching mechanism. Second channel.
  • the technical solution of providing a damper with a switching mechanism and selectively blocking the first flow channel or the second flow channel by means of the switching mechanism is relatively The installation space required is smaller, the control is simple, and the cost is low.
  • a second aspect of the present invention further provides an air conditioner indoor unit, the air conditioner indoor unit includes the fresh air module described in any one of the foregoing technical solutions.
  • Fig. 1 is the air duct structure schematic diagram of the fresh air module of the present invention
  • Fresh air duct 10. First runner; 11. Second runner; 12. Fresh air inlet; 13. Fresh air outlet; 2. Filter member; 20. High-efficiency filter member; 21. Coarse-efficiency filter member; 3. Electricity Heating; 30, the first electric heating; 31, the second electric heating; 4, the fresh air fan; 5, the return air duct; 50, the return air inlet; 51, the return air outlet; 6, the return air fan.
  • the terms “installed”, “connected” and “connected” should be understood in a broad sense, for example, it may be a fixed connection or a It is a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication between two components.
  • installed should be understood in a broad sense, for example, it may be a fixed connection or a It is a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication between two components.
  • the air conditioner indoor unit provided by the present invention includes an air conditioner module and a fresh air module.
  • the air conditioner module can cool or heat during operation, and the fresh air module can introduce outdoor fresh air into the room during operation.
  • the air conditioner module and the fresh air module work independently.
  • the fresh air module can be arranged below the air conditioning module.
  • the fresh air module in this embodiment includes a casing, and a fresh air duct 1 and a return air duct 5 are formed in the casing.
  • the fresh air duct is provided with a filter member 2, an electric heater 3 and a fresh air fan 4, and the return air duct 5 is provided with There are return air fans 6.
  • the fresh air blower 4 When the fresh air blower 4 is activated, the outdoor fresh air enters the room through the fresh air duct 1, and is filtered and purified by the filter member in the first flow passage 10 or the second flow passage 11 in the process.
  • the return air fan 6 When the return air fan 6 is activated, the indoor dirty air is discharged to the outside through the return air duct 5 . In the state of fresh air and turbid air entering and exiting, the indoor air pressure basically remains unchanged.
  • the air flow directions between the fresh air duct 1 and the return air duct 5 are opposite, and heat exchange and waste heat recovery can also be realized through reasonable settings and material selection.
  • the air ducts are arranged as independent and fitted
  • the fresh air duct 1 is divided into two to form a first runner 10 and a second runner 11 that are parallel to each other.
  • a high-efficiency filter member 20 is disposed in the first flow channel 10 , and the high-efficiency filter member 20 is disposed at a position close to the upstream side of the first flow channel 10 along the airflow direction.
  • a coarse filter member 21 is disposed in the second flow channel 11 , and the coarse filter member 21 is disposed at a position close to the upstream side of the second flow channel 11 along the airflow direction.
  • the cross-sectional size of the first runner 10 is set to be larger than that of the second runner 11 .
  • the structure of the cross-sectional size to increase the intake air volume.
  • the electric heater 3 is used to heat all or part of the airflow circulating in the fresh air duct 1 .
  • the electric heating includes a first electric heater 30 and a second electric heater 31 , the first electric heater 30 is arranged in the first flow channel 10 , and the second electric heater 31 is arranged in the second flow channel 11 . More specifically, the first electric heater 30 is disposed at a position close to the downstream side of the first flow channel 10 along the airflow direction, and the second electric heater 31 is disposed at a position close to the downstream side of the second flow channel 11 along the airflow direction.
  • the electric heater 3 can also be arranged at any suitable position in the flow channel, such as in the middle of each flow channel, or at a position close to the upstream side of the first flow channel 10 along the airflow direction.
  • the first flow channel 10 and the second flow channel 11 in this embodiment share the fresh air fan 4, and the fresh air fan 4 is located at the fresh air outlet 13 and downstream of the first flow channel 10 and the second flow channel 11 along the airflow direction. between the sides.
  • the two fresh air inlets 12 , the fresh air outlet 13 , the return air inlet 50 and the return air outlet 51 can be respectively provided with independently controlled dampers (not shown).
  • the damper provided at the fresh air inlet 12 is equipped with a switching mechanism.
  • the switching mechanism includes a motor, a transmission gear, a rotating shaft and a swing plate.
  • the swing plate is pivotally connected between the two fresh air inlets 12 through the rotating shaft, and is driven by a motor.
  • the swing plate can be swung, and when it swings to the fresh air inlet 12 on the left, it blocks the entrance of the second flow channel 11 and opens the first flow channel 10; when it swings to the fresh air inlet 12 on the right, it blocks the first flow channel
  • the entrance of the flow channel 10 opens the second flow channel 11 at the same time, thereby constructing a swing type damper. In the process of air intake, usually the two runners are not used at the same time.
  • the outdoor air quality index is obtained through the sensor, and which flow channel needs to be opened is determined according to the obtained outdoor air quality index. For example, when the outdoor air quality index is higher than 50, it indicates that the outdoor air quality is relatively poor. At this time, the damper is controlled to open the first flow channel 10 and close the second flow channel 11, and the outdoor air enters the room after passing through the high-efficiency filter member 20; When the air quality index is not higher than 50, it indicates that the outdoor air quality is relatively good. At this time, the damper is controlled to open the second flow channel 11 and close the first flow channel 10, and the outdoor air enters the room after being filtered by the coarse filter member 21.
  • the return air duct 5 can be opened, the return air inlet 50 and the return air outlet 51 can be connected, and the return air fan 6 can be started, so that the indoor turbid air is discharged through the return air duct 5 to the outdoor.
  • the air volume of the first flow channel 10 or the second flow channel 11 can also be adjusted by adjusting the rotational speed of the fresh air fan 4 .
  • the rotation speed of the fresh air fan 4 can be increased when the first flow channel 10 is opened, and the rotation speed of the fresh air fan 4 can be reduced when the second flow channel 11 is opened .
  • the above situation is applicable when the temperature difference between indoor and outdoor is small. If the fresh air module operates in winter, the outdoor low temperature will greatly reduce the indoor temperature and affect the indoor comfort. At this time, it is necessary to judge whether it is necessary to turn on the electric heating according to the outdoor temperature. For example, the outdoor temperature is obtained through the temperature sensor. When the flow channel is selected, when the outdoor temperature is lower than 15°C, the electric heating of the corresponding flow channel is turned on; when the outdoor temperature is not lower than 15°C, the corresponding flow channel is not turned on. Electrical heating of the runner.
  • the indoor air pressure is slightly higher than the outdoor air pressure. and the speed of the return air fan 6 to create a pressure difference between indoor and outdoor.

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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)

Abstract

一种空调室内机及其新风模块，新风模块包括新风风道（1）和回风风道（5），新风风道（1）内设置有用于促进气流流通的新风风机（4），回风风道（5）内设置有用于促进气流流通的回风风机（6），新风风道（1）包括：第一流道（10），其内设置有第一过滤构件（20）；以及第二流道（11），其与第一流道（10）并行且设置有第二过滤构件（21），其中，第一过滤构件（20）与第二过滤构件（21）具有不同的过滤精度；新风风道（1）包括新风入口（12），新风风道（1）在新风入口（12）处配置有风门，风门能够将第一流道（10）和/或第二流道（11）封堵。

Description

空调室内机及其新风模块 技术领域
本发明涉及空调技术领域，具体涉及一种空调室内机及其新风模块。
背景技术
新风系统的主要作用就是将室外的新鲜空气引入室内，以提升室内空气的新鲜度，改善室内空气质量。新风系统通常与空调系统独立设置，部分新风系统也可以集成在空调上，作为空调器的一个功能模块而存在。
现有的具有新风模块的空调器，其新风模块通常只具有单一的风道，仅能将室外空气净化后输入至室内，功能单一，这种新风模块在运行时存在以下三个问题：无法根据室外的空气质量状况进行针对性过滤处理，导致滤网更换频繁，使用成本较高；冬季时室外温度较低，换气过程会导致室内温度降低，影响用户体验；换气过程易造成室内外压差，导致门窗难以开闭。
相应地，本领域需要一种新的空调室内机及其新风模块来解决上述问题。
发明内容
为了至少解决现有技术中的上述问题之一，本发明的第一方面提供了一种空调室内机的新风模块，所述新风模块包括新风风道和回风风道，所述新风风道内设置有用于促进气流流通的新风风机，所述回风风道内设置有用于促进气流流通的回风风机，所述新风风道包括：第一流道，其内设置有第一过滤构件；以及第二流道，其与所述第一流道并行设置，所述第二流道内设置有第二过滤构件，其中，所述第一过滤构件与所述第二过滤构件具有不同的过滤精度；所述新风风道包括新风入口，所述新风风道在所述新风入口处配置有风门，所述风门能够将所述第一流道和/或所述第二流道封堵。
本发明提供的空调器的新风模块，通过在新风风道内设置并行的第一流道和第二流道，并在两个流道内设置不同过滤精度的过滤构件，当室外空气质量较差时通过过滤精度较高的流道进气，当室外空气质量较优时选择通过过滤精度低的流道进气，从而可以延长各个过滤构件的使用寿命，降低过滤构件的更换频率，进而降低使用成本。此外，通过设置回风风道，在将室外新风引入室内的同时，同时可以将室内浊风排出至室外，既有利于提升换气效率，又有助于维持室内外气压平衡，解决因气压差造成的门窗开闭困难的问题，以及因气压差造成的换气噪声大的问题。
可以理解的是，风门的设置方式有多种，例如可以在第一流道和第二流道的新风入口处分别设置可独立控制的风门；可以设置具有多个工作位的摆转式风门，该摆转式风门在摆转机构的作用下可以选择性地封堵第一流道或第二流道，摆转机构例如为摆板连接到转轴的结构等等。
还可以理解的是，第一过滤构件可以为高效过滤构件、中效过滤构件、粗效过滤构件等，第二过滤构件可以为高效过滤构件、中效过滤构件、粗效过滤构件等。
对于上述的空调室内机的新风模块，在一些可行的实施方式中，所述第一过滤构件设置于所述第一流道沿气流流通方向的靠近上游侧的位置；并且/或者
所述第二过滤构件设置于所述第二流道沿气流流通方向的靠近上游侧的位置。
通过将过滤构件设置于各个流道沿气流流通方向的靠近上游侧的位置，能够提高过滤效率，且能使风道保持洁净。
可以理解的是，过滤构件可以设置在各流道内任意合适的位置。
对于上述的空调室内机的新风模块，在一些可行的实施方式中，所述第一过滤构件的过滤精度大于所述第二过滤构件的过滤精度，并且所述第一流道的截面尺寸大于所述第二流道的截面尺寸。
当过滤构件的过滤精度较高时，新风在流道内流通的风阻会增大，在风机转速和流道截面尺寸相同的情形下，过滤构件精度高 的流道风阻大，这样会使进气量变小。本发明通过增大过滤精度较高的过滤构件所在的流道的截面尺寸，在获得高精度过滤效果的同时可以保证足够的进气量，无需通过提高风机转速的方式来提高进气量，可以降低系统能耗。
对于上述的空调室内机的新风模块，在一些可行的实施方式中，所述新风模块还包括电加热，所述电加热用于加热在所述新风风道内流通的全部或者部分气流。
通过在新风风道内设置电加热，在冬季室外温度较低的情形下可以降低换气过程中室外低温对室内温度的影响，从而使室内温度能够维持在舒适范围内，进而可以提升用户体验。
对于上述的空调室内机的新风模块，在一些可行的实施方式中，所述电加热包括第一电加热和第二电加热，所述第一电加热设置于所述第一流道内，所述第二电加热设置于所述第二流道内。
通过在第一流道和第二流道内均设置电加热，使得新风从任意一个流道进入室内过程中均可以被加热。
对于上述的空调室内机的新风模块，在一些可行的实施方式中，所述第一电加热设置于所述第一流道沿气流流通方向靠近下游侧的位置，
所述第二电加热设置于所述第二流道沿气流流通方向靠近下游侧的位置。
通过将电加热设置于各流道沿气流流通方向靠近下游侧的位置，这样可以减小被加热的气流在风道内留存的时间，从而可以减小热损耗，提高加热效率。
对于上述的空调室内机的新风模块，在一些可行的实施方式中，所述第一流道和所述第二流道共用所述新风风机。
通过共用新风风机，可以降低硬件成本，以及减小占用的安装空间，有利于新风模块的小型化设计。
对于上述的空调室内机的新风模块，在一些可行的实施方式中，所述新风模块包括新风出口，所述新风风机设置于所述新风出口和所述第一流道和所述第二流道沿气流流通方向的下游侧之间。
通过将新风风机设置于新风模块的新风出口和第一流道、第二流道沿气流流通方向的下游侧之间，有利于向两个流道提供均匀的气流驱动力。
对于上述的空调室内机的新风模块，在一些可行的实施方式中，所述风门配置有切换机构，所述风门能够借助于所述切换机构选择性地封堵所述第一流道或所述第二流道。
与在第一流道和第二流道分别设置独立控制的风门的技术方案相比，设置具有切换机构的风门，借助切换机构选择性地封堵第一流道或第二流道的技术方案，相对来说所需的安装空间更小，且控制简单，成本低。
本发明的第二方面还提供了一种空调室内机，该空调室内机包括前述任一项技术方案所述的新风模块。
本领域技术人员可以理解的是，由于上述空调室内机配置有前述任一项技术方案所述的空调室内机的新风模块，因此具备前述新风模块的所有的技术效果，在此不再赘述。
附图说明
下面参照附图来描述本发明的空调室内机及其新风模块，附图中：
图1为本发明的新风模块的风道结构示意图；
附图标记列表：
1、新风风道；10、第一流道；11、第二流道；12、新风入口；13、新风出口；2、过滤构件；20、高效过滤构件；21、粗效过滤构件；3、电加热；30、第一电加热；31、第二电加热；4、新风风机；5、回风风道；50、回风入口；51、回风出口；6、回风风机。
具体实施方式
下面参照附图来描述本发明的优选实施方式。本领域技术人员应当理解的是，这些实施方式仅仅用于解释本发明的技术原理，并非旨在限制本发明的保护范围。例如，虽然下述的实施方式是结合分体式空调器来解释说明的，但是，这并不是限制性的，本发明的技 术方案同样适用于柜机空调、窗机空调等，这种应用对象的改变并不偏离本发明的原理和范围。
另外，为了更好地说明本发明，在下文的具体实施方式中给出了众多的具体细节。本领域技术人员应当理解，没有某些具体细节，本发明同样可以实施。
需要说明的是，在本发明的描述中，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方向或位置关系的术语是基于附图所示的方向或位置关系，这仅仅是为了便于描述，而不是指示或暗示所述装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性。
此外，还需要说明的是，在本发明的描述中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域技术人员而言，可根据具体情况理解上述术语在本发明中的具体含义。
本发明提供的空调室内机包括空调模块和新风模块，空调模块运行时可以制冷或制热，新风模块运行时可以将室外新风引入室内，空调模块与新风模块独立工作。在具体配置上，可以将新风模块设置于空调模块的下方。
本实施例中的新风模块包括壳体，壳体内形成有新风风道1和回风风道5，新风风道内设置有过滤构件2、电加热3和新风风机4，回风风道5内设置有回风风机6。在新风风机4启动的情形下，室外新风通过新风风道1进入室内，在此过程中被第一流道10或第二流道11中的过滤构件过滤净化。在回风风机6启动的情形下，室内浊风通过回风风道5排出至室外。在新风和浊风一进一出的状态下，室内气压基本保持不变。本实施例中，新风风道1和回风风道5之间的气流流向是相逆的，通过合理的设置以及材料选择还可以实现换热，实 现废热回收，例如将新风风道与回风风道设置成彼此独立且贴合的结构。
参照图1所示，新风风道1一分为二形成彼此并行的第一流道10和第二流道11。第一流道10内设置有高效过滤构件20，高效过滤构件20设置于第一流道10沿气流流通方向的靠近上游侧的位置。第二流道11内设置有粗效过滤构件21，粗效过滤构件21设置于第二流道11沿气流流通方向的靠近上游侧的位置。本实施例中的新风风道1，为了对第一流道10进行风量补偿，降低因高效过滤构件20造成的风量小的问题，将第一流道10的截面尺寸设置成大于第二流道11的截面尺寸的结构，以增大进气量。
继续参照图1，电加热3用于加热在新风风道1内流通的全部或者部分气流。具体地，电加热包括第一电加热30和第二电加热31，第一电加热30设置于第一流道10内，第二电加热31设置于第二流道11内。更具体地，第一电加热30设置于第一流道10沿气流流通方向靠近下游侧的位置，第二电加热31设置于第二流道11沿气流流通方向靠近下游侧的位置。
可以理解的是，电加热3还可以设置于流道内的任意合适的位置，如设置于各流道的中部，或者设置于第一流道10沿气流流通方向靠近上游侧的位置等。
为了降低硬件成本，本实施例中的第一流道10和第二流道11共用新风风机4，该新风风机4位于新风出口13和第一流道10和第二流道11沿气流流通方向的下游侧之间。
本发明中的两个新风入口12、新风出口13、回风入口50和回风出口51均可以分别设置独立控制的风门(未图示)。本实施例中的新风入口12处设置的风门配置有切换机构，该切换机构包括电机、传动齿轮、转轴以及摆板，摆板通过转轴枢转连接到两个新风入口12之间，通过电机驱动可使摆板摆动，当其摆转至左侧的新风入口12时封堵第二流道11的入口，同时打开第一流道10；当其摆转至右侧的新风入口12时封堵第一流道10的入口，同时打开第二流道11，从而构造出一种摆转式风门。在进风过程中，通常两个流道不会同时使用。
下面介绍本发明的新风模块的工作原理。
当空调室内机开启新风功能后，通过传感器获取室外空气质量指数，根据获取的室外空气质量指数判断需要开启哪个流道。例如，当室外空气质量指数高于50时，表明室外空气质量相对较差，此时控制风门打开第一流道10并关闭第二流道11，室外空气经高效过滤构件20后进入室内；当室外空气质量指数不高于50时，表明室外空气质量相对较优，此时控制风门打开第二流道11并关闭第一流道10，室外空气经粗效过滤构件21过滤后进入室内。与此同时，为了维持室内外气压平衡，可以开启回风风道5，使回风入口50和回风出口51接通，启动回风风机6，使室内浊风通过回风风道5排出至室外。
可以理解的是，还可以通过调整新风风机4的转速来调整第一流道10或第二流道11的风量。例如在第一流道10和第二流道11的截面尺寸相同的情形下，在开启第一流道10时可以提高新风风机4的转速，在开启第二流道11时可以降低新风风机4的转速。
上述情形适用于室内外温差较小的情况，若该新风模块在冬季运行，室外低温会大幅降低室内温度，影响室内舒适性。此时需要依据室外温度情况判断是否需要开启电加热。例如，通过温度传感器获取室外温度，在选定了流道的情形下，当室外温度低于15℃时，开启相应流道的电加热；当室外温度不低于15℃时，则不开启相应流道的电加热。
需要说明的是，上述示例中的数字仅仅是示例性的，并不应当理解为对保护范围的限定，本领域技术人员可根据实际需要确定具体的温度阈值和空气质量指数阈值。
可以理解的是，某些情形下存在室内外压差是比较有利的，例如室外空气质量较差的情形，此时室内气压略高于室外气压是比较有利的，此时可以通过调节新风风机4和回风风机6之间的转速来营造室内外压差。
至此，已经结合附图所示的优选实施方式描述了本发明的技术方案，但是，本领域技术人员容易理解的是，本发明的保护范围显然不局限于这些具体实施方式。在不偏离本发明的原理的前提下，本领域技术人员可以对相关技术特征作出等同的更改或替换，这些更改或替换之后的技术方案都将落入本发明的保护范围之内。

Claims (10)

  1. 一种空调室内机的新风模块，其特征在于，所述新风模块包括新风风道和回风风道，所述新风风道内设置有用于促进气流流通的新风风机，所述回风风道内设置有用于促进气流流通的回风风机，所述新风风道包括：
    第一流道，其内设置有第一过滤构件；以及
    第二流道，其与所述第一流道并行设置，所述第二流道内设置有第二过滤构件，
    其中，所述第一过滤构件与所述第二过滤构件具有不同的过滤精度；
    所述新风风道包括新风入口，所述新风风道在所述新风入口处配置有风门，所述风门能够将所述第一流道和/或所述第二流道封堵。
  2. 根据权利要求1所述的空调室内机的新风模块，其特征在于，所述第一过滤构件设置于所述第一流道沿气流流通方向的靠近上游侧的位置；并且/或者
    所述第二过滤构件设置于所述第二流道沿气流流通方向的靠近上游侧的位置。
  3. 根据权利要求2所述的空调室内机的新风模块，其特征在于，所述第一过滤构件的过滤精度大于所述第二过滤构件的过滤精度，并且所述第一流道的截面尺寸大于所述第二流道的截面尺寸。
  4. 根据权利要求1所述的空调室内机的新风模块，其特征在于，所述新风模块还包括电加热，所述电加热用于加热在所述新风风道内流通的全部或者部分气流。
  5. 根据权利要求4所述的空调室内机的新风模块，其特征在于，所述电加热包括第一电加热和第二电加热，所述第一电加热设置于所述第一流道内，所述第二电加热设置于所述第二流道内。
  6. 根据权利要求5所述的空调室内机的新风模块，其特征在于，所述第一电加热设置于所述第一流道沿气流流通方向靠近下游侧的位置，
    所述第二电加热设置于所述第二流道沿气流流通方向靠近下游侧的位置。
  7. 根据权利要求1所述的空调室内机的新风模块，其特征在于，所述第一流道和所述第二流道共用所述新风风机。
  8. 根据权利要求7所述的空调室内机的新风模块，其特征在于，所述新风模块包括新风出口，所述新风风机设置于所述新风出口和所述第一流道和所述第二流道沿气流流通方向的下游侧之间。
  9. 根据权利要求1所述的空调室内机的新风模块，其特征在于，所述风门配置有切换机构，所述风门能够借助于所述切换机构选择性地封堵所述第一流道或所述第二流道。
  10. 一种空调室内机，其特征在于包括权利要求1-9中任一项所述的新风模块。
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