WO2023103888A1 - 新风机及其降噪方法 - Google Patents

新风机及其降噪方法 Download PDF

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Publication number
WO2023103888A1
WO2023103888A1 PCT/CN2022/136011 CN2022136011W WO2023103888A1 WO 2023103888 A1 WO2023103888 A1 WO 2023103888A1 CN 2022136011 W CN2022136011 W CN 2022136011W WO 2023103888 A1 WO2023103888 A1 WO 2023103888A1
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Prior art keywords
noise
fan
fans
fresh air
frequency
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PCT/CN2022/136011
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English (en)
French (fr)
Inventor
齐丛亮
吴傲立
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江苏中科睿赛污染控制工程有限公司
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Publication of WO2023103888A1 publication Critical patent/WO2023103888A1/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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/89—Arrangement or mounting of control or safety devices
    • 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
    • F24F13/24—Means for preventing or suppressing noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2130/00—Control inputs relating to environmental factors not covered by group F24F2110/00
    • F24F2130/40—Noise
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Definitions

  • the present application relates to the technical field of fresh air noise reduction, for example, to a fresh air fan and a noise reduction method thereof.
  • the fresh air fan is a kind of air purification equipment, which can circulate the indoor air.
  • the indoor dirty air is discharged outside, and on the other hand, the outdoor oxygen-enriched air is sent into the room through sterilization, disinfection, filtration and other measures.
  • noise will be generated, which will reduce the user's sense of experience. The noise is especially obvious at night and in low-noise environments.
  • the noise sources of the fresh air fan are mainly: the noise generated by the structural vibration caused by the high-speed rotation of the fan; the turbulence generated by the high-speed flow of gas inside the body and the noise generated by the air duct.
  • the present application provides a fresh air fan and a noise reduction method thereof, which can effectively reduce the noise during the operation of the fresh air fan and improve user experience.
  • the application provides a new fan, including:
  • a fan unit comprising at least two fans
  • a rotational speed sensor disposed at each fan, configured to detect the rotational speed of each fan
  • the first noise detection device is configured to collect the first noise when one of the at least two fans starts running
  • the second noise detection device is configured to collect the second noise during the operation of the activated fans except the one activated fan among the at least two fans, wherein the phase of the second noise is the same as that of the first noise opposite in phase;
  • the controller is configured to receive the data of the first noise and the data of the second noise, and adjust the speed of the fan according to the data of the first noise and the data of the second noise, so that the collected
  • the frequency of the first noise is the same as the frequency of the second noise collected after adjustment, and the amplitude of the noise generated by the fresh air fan is within a preset amplitude range.
  • the present application also provides a noise reduction method for the above-mentioned fresh air machine, which is applied to the above-mentioned fresh air machine, including:
  • the phases of noise generated by activated fans other than the one activated fan of the fans are opposite;
  • the controller calculates and adjusts the speed of the fan so that the adjusted first collected
  • the frequency of the noise is the same as the frequency of the second noise collected after adjustment, and the amplitude of the noise generated by the fresh air fan is within a preset amplitude range.
  • Fig. 1 is a front view of a new fan provided by the embodiment of the present application.
  • Fig. 2 is a side view of a new fan provided by the embodiment of the present application.
  • Fig. 3 is a flow chart of a noise reduction method for a fresh air machine provided by an embodiment of the present application.
  • connection should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, it can be the internal communication of two components or the interaction relationship between two components.
  • connection can be a fixed connection, a detachable connection, or an integral body; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediary, it can be the internal communication of two components or the interaction relationship between two components.
  • a first feature being "on” or “under” a second feature may include direct contact between the first feature and the second feature, and may also include the first feature and the second feature Not in direct contact but through another characteristic contact between them.
  • “above”, “above” and “above” the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.
  • “Below”, “beneath” and “under” the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.
  • the fresh air machine includes a fan unit, a speed sensor, a first noise detection device, a second noise detection device, a controller, and a housing 1, wherein:
  • the above-mentioned fan unit includes at least two fans 2, wherein a part of the fans 2 is a fresh air fan, and the other part of the fans 2 is an exhaust fan, wherein the fresh air fan is set to deliver the outside air to the room, and the exhaust fan is set to deliver the indoor air to the outside. .
  • the above-mentioned speed sensor is arranged at each fan 2, which is set to detect the speed of the fan 2, and the speed sensor can send the speed of the fan 2 to the controller, so that the controller can adjust the speed to adjust the noise of the fan 2, that is, When the rotation speed of the fan 2 changes, the noise generated by the fan 2 will also change.
  • the noise refers to the frequency and amplitude of the noise.
  • the above-mentioned first noise detection device is arranged at one of the activated fans 2, and is configured to collect the first noise of the activated fan 2 during operation, and the first noise detection device is connected with the controller, and the data of the first noise can be collected. transmitted to the controller.
  • the above-mentioned second noise detection device is arranged at other activated fans 2, and is configured to collect the second noise of other activated fans 2 during operation, and the second noise detection device is connected with the controller, and can transmit the data of the second noise to the controller.
  • the second noise detection device when controlling other fans 2 to start, it is necessary to make the phase of the second noise generated by other fans 2 opposite to that of the first noise. It is two noises in which the peaks of the sound waves of one noise are opposite to the troughs of the sound waves of the other noise, and the troughs of the sound waves of one noise are opposite the peaks of the sound waves of the other noise.
  • control with the opposite phase is related to the start-up time of the following fan 2, that is, by controlling the start-up time of the following fan 2, the phase of the second noise produced by the latter fan 2 can be compared with that produced by the first fan 2.
  • the phase of the first noise is opposite.
  • the first noise detection device and the second noise detection device may be sensors, or other devices capable of noise detection, such as dual microphones.
  • the controller is configured to receive the data of the first noise and the data of the second noise, and adjust the speed of the blower fan 2 according to the data of the first noise and the data of the second noise, so that the frequency of the first noise collected after adjustment is consistent with that of the second noise.
  • the frequency of the second noise collected after adjustment is the same, and the amplitude of the noise generated by the fresh air fan is within a preset amplitude range.
  • the above-mentioned controller can be a common structure in related technologies, as long as it can receive and convert the first noise collected by the first noise detection device and the second noise collected by the second noise detection device into numerical values.
  • the controller may include a micro-computing unit, an active noise reduction processing chip, an analog-to-digital conversion module, a digital-to-analog conversion module, and a power amplifier, etc., and the first noise and the second noise may be converted into the first noise value by the digital-to-analog conversion module and the second noise value.
  • the heat exchanger 3 is arranged in the casing 1, and the heat exchanger 3 includes a first heat exchange channel and a second heat exchange channel that are connected to the outside world and indoors.
  • the fresh air fan is placed at the first heat exchange channel
  • the exhaust fan is placed at the first heat exchange channel.
  • the thermal energy contained in the indoor air can be recycled, and then the energy can be sent back to the room through the newly incoming outdoor air, so that ,
  • the fresh air fan is performing ventilation, the indoor temperature and humidity will not change too much.
  • the housing 1 is provided with a filter screen 4, and the filter screen 4 is arranged at the entrance of the first heat exchange channel to filter and purify the air entering the room.
  • the present application also provides a noise reduction method for the fresh air blower mentioned above, as shown in Figure 3.
  • the noise reduction method for the fresh air blower includes:
  • the controller selects and controls at least two blowers 2 to start according to the ventilation volume requirements input by the user (the at least two blowers 2 can be both fresh air blowers or exhaust blowers, or both fresh air blowers and exhaust blowers can also be used. ), and since at least two fans 2 are started in different order, the phases of the generated noises are also different.
  • the start time of the fans 2 is controlled by the controller so that the phase of the noise generated by one of the started fans 2 is different from that of the other started fans. 2
  • the phase of the generated noise is opposite.
  • the above ventilation volume requirement includes air intake volume and/or exhaust air volume, which is determined according to user requirements.
  • the operating mode of the fresh air blower is first determined.
  • the operating mode can be fresh air mode or circulation mode. Different operating modes require different numbers of fans 2 to be used.
  • the first noise detection device transmits the collected data of the first noise to the controller
  • the second noise detection device transmits the collected data of the second noise to the controller
  • the controller obtains the data of the second noise after receiving the data of the first noise The frequency of the first noise, and obtain the frequency of the second noise after receiving the data of the second noise at the same time.
  • the controller calculates and adjusts the speed of the fan so that the adjusted
  • the frequency of the noise is the same as the frequency of the second noise collected after adjustment, and the amplitude of the noise generated by the fresh air fan is within a preset amplitude range.
  • the first judging condition is: judging whether the frequency of the first noise acquired in S3 is the same as the frequency of the second noise acquired, and the second judging condition is whether the amplitude of the noise generated by the fresh air fan is within the preset amplitude range,
  • the noise produced by the fresh air blower is the only noise emitted during the overall operation of the fresh air blower, and the noise is formed by the noises generated by multiple running blowers 2 canceling each other out and superimposing each other.
  • the frequency of the first noise acquired in S3 is different from the frequency of the second noise acquired, or the amplitude of the noise generated by the fresh air fan is not within the preset amplitude range, or the frequency of the first noise acquired in S3 is different from the acquired
  • the frequency of the second noise is different, and the amplitude of the noise generated by the new fan is not within the preset amplitude range, it is necessary to adjust the speed of the fan 2 so that the frequency of the first noise collected after adjustment is the same as the frequency of the first noise collected after adjustment.
  • the frequency of the second noise is the same, and the amplitude of the noise generated by the fresh air fan is within a preset amplitude range.
  • the controller recalculates and allocates the speed of the currently running fans 2 according to the current ventilation volume and the number and speed of the currently running fans 2. At this time, it may be one of the fans 2 that adjusts the speed, or it may be multiple fans 2. speed adjustment is required. Then the controller controls the currently running fan 2 to run at the assigned speed.
  • the second judgment condition is the frequency of the noise generated by the fresh fan. Whether the amplitude is within the preset amplitude range) to determine whether the current adjustment meets the requirements. If the above two judgment conditions cannot be met, it is still necessary to re-adjust the speed of the fan 2 until it meets the frequency of the first noise collected after adjustment. The frequency of the second noise collected after adjustment is the same, and the amplitude of the noise generated by the fresh air fan is within a preset amplitude range.
  • the controller selects to start a new fan 2 according to the current ventilation rate and the number and speed of the currently running fans 2, so as to reduce or eliminate the noise. At this time, the controller will allocate and control the rotational speed of the new fan 2, so that the new fan 2 operates according to the allocated rotational speed.
  • the second judgment condition is the frequency of the noise generated by the fresh fan. Whether the amplitude is within the preset amplitude range) to determine whether the current adjustment meets the requirements. If the above two judgment conditions cannot be met, it is still necessary to re-adjust the speed of the fan 2 until it meets the frequency of the first noise collected after adjustment. The frequency of the second noise collected after adjustment is the same, and the amplitude of the noise generated by the fresh air fan is within a preset amplitude range.
  • the second judgment condition is whether the amplitude of the noise generated by the new fan is within the preset amplitude range) to determine whether the current adjustment meets the requirements, if not If the above two judgment conditions are met, it is still necessary to re-adjust the speed of fan 2 until the frequency of the first noise collected after adjustment is the same as the frequency of the second noise collected after adjustment, and the frequency of the noise generated by the new fan The amplitude is within the preset amplitude range.
  • the solution provided by this application calculates and adjusts the fan speed through the controller on the basis of ensuring that the ventilation volume meets the preset requirements, so that the frequency of the first noise collected after adjustment and the frequency of the second noise collected after adjustment The same, and the amplitude of the noise generated by the fresh air machine is within the preset amplitude range, so that the noise is weakened.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Fluid Mechanics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

本申请提供了一种新风机及其降噪方法。新风机包括：风机组，包括至少两个风机；转速传感器，设置于每个风机处；第一噪音检测装置，设置为采集一个启动的风机运行时的第一噪音；第二噪音检测装置，设置为采集其他启动的风机运行时的第二噪音；控制器，设置为接收第一噪音的数据以及第二噪音的数据，并根据第一噪音的数据以及第二噪音的数据调节由转速传感器检测的风机的转速，以使调整后采集到的第一噪音的频率与调整后采集到的第二噪音的频率相同，且新风机产生的噪音的振幅处于预设振幅范围内。

Description

新风机及其降噪方法
本申请要求在2021年12月08日提交中国专利局、申请号为202111493875.6的中国专利申请的优先权，该申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及新风降噪技术领域，例如涉及新风机及其降噪方法。
背景技术
新风机是一种空气净化设备，能够使室内空气产生循环，一方面把室内污浊的空气排出室外，另一方面把室外富氧空气经过杀菌、消毒、过滤等措施送入室内。在新风机运行过程中会产生噪声，导致用户的体验感降低，该噪声在夜间、低噪声环境中尤为明显。新风机的噪声来源主要为：风机高速转动引起的结构振动所产生的噪声；气体高速流动在机体内部产生的湍流和流经风道产生的噪声。
针对上述新风机的噪声问题，相关技术通常采用减少设备振动或增加消音棉等被动降噪措施，但是该类措施降噪效果较差。
发明内容
本申请提供一种新风机及其降噪方法，能够有效降低新风机运行过程中的噪音，提高用户体验。
本申请提供一种新风机，包括：
风机组，包括至少两个风机；
转速传感器，设置于每个风机处，设置为检测所述每个风机的转速；
第一噪音检测装置，设置为采集所述至少两个风机中一个启动的风机运行时的第一噪音；
第二噪音检测装置，设置为采集所述至少两个风机中除所述一个启动的风机外的启动的风机运行时的第二噪音，其中，所述第二噪音的相位与所述第一噪音的相位相反；
控制器，设置为接收所述第一噪音的数据以及所述第二噪音的数据，并根据所述第一噪音的数据以及所述第二噪音的数据调节风机的转速，以使调整后采集到的第一噪音的频率与调整后采集到的第二噪音的频率相同，且所述新风 机产生的噪音的振幅处于预设振幅范围内。
本申请还提供一种上述的新风机的降噪方法，应用于上述的新风机，包括：
根据所述新风机的通风量要求，控制启动至少两个风机，且控制所述风机的启动时间，以使所述至少两个风机中一个启动的风机产生的噪音的相位与所述至少两个风机中除所述一个启动的风机外的启动的风机产生的噪音的相位相反；
通过第一噪音检测装置采集所述一个启动的风机的第一噪音，通过第二噪音检测装置采集所述除所述一个启动的风机外的启动的风机的第二噪音；
通过控制器接收所述第一噪音的数据并获取所述第一噪音的频率，以及接收所述第二噪音的数据并获取所述第二噪音的频率；
在保证通风量满足预设要求的基础上，根据所述第一噪音的频率以及所述第二噪音的频率，通过所述控制器计算并调整风机的转速，以使得调整后采集到的第一噪音的频率与调整后采集到的第二噪音的频率相同，且所述新风机产生的噪音的振幅处于预设振幅范围内。
附图说明
图1是本申请实施例提供的一种新风机的主视图；
图2是本申请实施例提供的一种新风机的侧视图；
图3是本申请实施例提供的一种新风机的降噪方法的流程图。
图中：
1、壳体；2、风机；3、热交换器；4、滤网。
具体实施方式
下面结合附图和实施例对本申请进行说明。此处所描述的具体实施例仅仅用于解释本申请。为了便于描述，附图中仅示出了与本申请相关的部分。
在本申请的描述中，除非另有规定和限定，术语“相连”、“连接”、“固定”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；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或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据情况理解上述术语在本申请中的含义。
在本申请中，除非另有规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一特征和第二特征直接接触，也可以包括第一特征和第二特征不是 直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本实施例的描述中，术语“上”、“下”、“右”、等方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述和简化操作，而不是指示或暗示所指的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申请的限制。此外，术语“第一”、“第二”仅仅用于在描述上加以区分，并没有特殊的含义。
本申请提供一种新风机，其能够实现新风机的主动降噪，而且降噪效果更好。如图1和图2所示，该新风机包括风机组、转速传感器、第一噪音检测装置、第二噪音检测装置、控制器以及壳体1，其中：
上述风机组包括至少两个风机2，其中一部分风机2为新风风机，另一部分风机2为排风风机，其中新风风机设置为将外界空气输送至室内，排风风机设置为将室内空气输送至室外。
上述转速传感器设置于每个风机2处，其设置为检测风机2的转速，转速传感器可以将风机2的转速发送至控制器，以使控制器调节转速实现对风机2噪音大小的调整，也就是说风机2转速改变，风机2产生的噪音大小也会发生改变，本实施例中，所述的噪音大小指的是噪音的频率和振幅。
上述第一噪音检测装置设置于其中一个启动的风机2处，设置为采集该启动的风机2运行时的第一噪音，且该第一噪音检测装置与控制器相连，能够将第一噪音的数据传输至控制器。
上述第二噪音检测装置设置于其他启动的风机2处，设置为采集其他启动的风机2运行时的第二噪音，且该第二噪音检测装置与控制器相连，能够将第二噪音的数据传输至控制器。本实施例中，在控制其他风机2启动时，需要使其他风机2产生的第二噪音与第一噪音的相位相反，上述相位指的是一个时刻噪音声波处于一个周期内的位置，相位相反指的是两个噪音中，其中一个噪音的声波的波峰与另一个噪音的声波的波谷相对，其中一个噪音的声波的波谷与另一个噪音的声波的波峰相对。而相位相反的控制，与在后的风机2启动的时间有关，即通过控制在后的风机2的启动时间，能够使得在后的风机2产生的第二噪音的相位与第一个风机2产生的第一噪音的相位相反。
本实施例中，第一噪音检测装置以及所述第二噪音检测装置可以是传感器， 也可以是其他能够实现噪音检测的装置，如可以是双麦克风。
上述控制器设置为接收第一噪音的数据以及第二噪音的数据，并根据第一噪音的数据以及第二噪音的数据调节风机2的转速，以使调整后采集到的第一噪音的频率与调整后采集到的第二噪音的频率相同，且新风机产生的噪音的振幅处于预设振幅范围内。
本实施例中，上述控制器可以是相关技术中常见的结构，只要能实现对第一噪音检测装置采集的第一噪音以及第二噪音检测装置采集的第二噪音进行接收以及转换为数值即可，例如该控制器可以包括微计算单位、主动降噪处理芯片、模数转换模块、数模转换模块和功率放大器等，第一噪音和第二噪音可以通过数模转换模块转换为第一噪音值和第二噪音值。
热交换器3设置于壳体1内，且热交换器3包括均连通外界和室内的第一换热通道以及第二换热通道，新风风机置于第一换热通道处，排风风机置于第二换热通道处，通过该热交换器3，能够在将室内空气排出之前，对室内空气中包含的热能进行重新回收利用，然后将这些能量通过新进来的室外空气输送回室内，这样，新风机在进行换气的时候，室内的温度和湿度就不会有太多的变化。
一实施例中，在壳体1设有滤网4，滤网4设置于所述第一换热通道的进口处，以对进入室内的空气进行过滤净化。
本申请还提供一种上述新风机的降噪方法，可参考图3，该新风机的降噪方法包括：
S1、根据新风机的通风量要求，控制启动至少两个风机，且控制风机的启动时间，以使其中一个启动的风机产生的噪音的相位与其他启动的风机产生的噪音的相位相反。
即控制器根据用户输入的通风量要求，选择控制至少两个风机2启动(该至少两个风机2可以都是新风风机，也可以都是排风风机，还可以既有新风风机也有排风风机)，且由于至少两个风机2启动先后顺序不同，因此产生的噪音的相位也不同，通过控制器控制风机2的启动时间，使其中一个启动的风机2产生的噪音的相位与其他启动的风机2产生的噪音的相位相反。
本实施例中，上述通风量要求包括进风风量和/或排放风量，根据用户需求确定。而且在新风机运行时，首先确定新风机的运行模式，该运行模式可以是新风模式，也可以是循环模式，不同的运行模式，所使用的风机2的数量也不同。
S2、通过第一噪音检测装置采集其中一个启动的风机的第一噪音，通过第二噪音检测装置采集其他启动的风机的第二噪音。
S3、通过控制器接收所述第一噪音的数据并获取第一噪音的频率，以及接 收所述第二噪音的数据并获取第二噪音的频率。
第一噪音检测装置将采集到的第一噪音的数据传输给控制器，第二噪音检测装置将采集到的第二噪音的数据传输给控制器，控制器接收到第一噪音的数据后获取第一噪音的频率，同时接收第二噪音的数据后获取第二噪音的频率。
S4、在保证通风量满足预设要求的基础上，根据所述第一噪音的频率以及所述第二噪音的频率，由控制器计算并调整风机的转速，以使得调整后采集到的第一噪音的频率与调整后采集到的第二噪音的频率相同，且新风机产生的噪音的振幅处于预设振幅范围内。
于S4中，为了能够在保证通风量的基础上实现降噪，需要根据S3中第一噪音的频率以及第二噪音的频率，协同调整风机2的转速来实现降噪。S4中，通过两个判断条件来确定是否进行风机2的转速调节。其中第一个判断条件为：判断S3中获取的第一噪音的频率与获取的第二噪音的频率是否相同，第二个判断条件为新风机产生的噪音的振幅是否处于预设振幅范围内，该新风机产生的噪音为新风机整体运行过程中发出的唯一的噪音，该噪音由多个运行的风机2产生的噪音相互抵消叠加后所形成的噪音。
当S3中获取的第一噪音的频率与获取的第二噪音的频率不相同，或者新风机产生的噪音的振幅未处于预设振幅范围内，或者S3中获取的第一噪音的频率与获取的第二噪音的频率不相同，且新风机产生的噪音的振幅未处于预设振幅范围内时，则需要调整风机2的转速，以使得调整后采集到的第一噪音的频率与调整后采集到的第二噪音的频率相同，且新风机产生的噪音的振幅处于预设振幅范围内。
而在S3中获取的第一噪音的频率与获取的第二噪音的频率相同，且新风机产生的噪音的振幅处于预设振幅范围内时，则说明当前风机2的运行状态是符合要求的且不需要进行调整的，此时保持当前风机2的运行状态。
S3中，采用以下两种方式来调整风机的转速：
1)仅调整当前运行的风机2的转速。
通过控制器根据当前的通风量以及当前运行的风机2的数量和转速情况，重新计算分配当前运行的风机2的转速，此时可能是其中一个风机2进行转速调整，也可能是多个风机2均需要转速调整。随后通过控制器控制当前运行的风机2按照分配后的转速运行。
在调整风机2的转速后，依旧需要通过上述两个判断条件(即断S3中获取的第一噪音的频率与获取的第二噪音的频率是否相同，第二个判断条件为新风机产生的噪音的振幅是否处于预设振幅范围内)来确定当前的调整是否满足要求，如 果不能满足上述两个判断条件，则依旧需要重新进行风机2的转速调整，直至满足调整后采集到的第一噪音的频率与调整后采集到的第二噪音的频率相同，且新风机产生的噪音的振幅处于预设振幅范围内。
2)启动新的风机2。
控制器根据当前的通风量以及当前运行的风机2的数量和转速情况，选择启动新的风机2，来实现噪音的减弱或消除。此时控制器会对新的风机2的转速进行分配控制，以使得新的风机2按照分配后的转速运行。
在调整风机2的转速后，依旧需要通过上述两个判断条件(即断S3中获取的第一噪音的频率与获取的第二噪音的频率是否相同，第二个判断条件为新风机产生的噪音的振幅是否处于预设振幅范围内)来确定当前的调整是否满足要求，如果不能满足上述两个判断条件，则依旧需要重新进行风机2的转速调整，直至满足调整后采集到的第一噪音的频率与调整后采集到的第二噪音的频率相同，且新风机产生的噪音的振幅处于预设振幅范围内。
上述通风量是否满足预设要求通过以下方法判断：
在调节风机2转速后，判断新风机的通风量是否满足预设要求，如果新风机的通风量不满足，则重新调节至少两个风机2的转速，直至新风机的通风量满足预设要求。根据调节后的风机2的转速，确定该风机2的转速增加量或减小量，并对所有调整后的风机2的转速增加量或减小量进行求和，以获取新风机的转速变化量，根据转速变化量获取新风机的通风量变化值，在通风量变化值处于预设变化值范围时，确定新风机的通风量满足预设要求，在通风量变化值不处于预设变化值范围时，确定新风机的通风量不满足预设要求。通过上述判断方法，能够在保证新风机整体流通量满足预设要求的基础上，对新风机进行降噪处理。
在调整风机2转速以使得新风机的通风量满足预设要求时，由于风机2转速发生改变，相对于的噪音的频率也会发生改变，此时依旧需要通过上述两个判断条件(即断S3中获取的第一噪音的频率与获取的第二噪音的频率是否相同，第二个判断条件为新风机产生的噪音的振幅是否处于预设振幅范围内)来确定当前的调整是否满足要求，如果不能满足上述两个判断条件，则依旧需要重新进行风机2的转速调整，直至满足调整后采集到的第一噪音的频率与调整后采集到的第二噪音的频率相同，且新风机产生的噪音的振幅处于预设振幅范围内。
本申请提供的方案在保证通风量满足预设要求的基础上，通过控制器计算并调整风机的转速，以使得调整后采集到的第一噪音的频率与调整后采集到的第二噪音的频率相同，且所述新风机产生的噪音的振幅处于预设振幅范围内，进而使得噪音被减弱，通过上述方式能够有效实现新风机的主动降噪，有效提 高了新风机的降噪效果和精度，提高了新风机舒适性。

Claims (10)

  1. 一种新风机，包括：
    风机组，包括至少两个风机；
    转速传感器，设置于每个风机处，设置为检测所述每个风机的转速；
    第一噪音检测装置，设置为采集所述至少两个风机中一个启动的风机运行时的第一噪音；
    第二噪音检测装置，设置为采集所述至少两个风机中除所述一个启动的风机外的启动的风机运行时的第二噪音，其中，所述第二噪音的相位与所述第一噪音的相位相反；
    控制器，设置为接收所述第一噪音的数据以及所述第二噪音的数据，并根据所述第一噪音的数据以及所述第二噪音的数据调节由所述转速传感器检测的风机的转速，以使调整后采集到的第一噪音的频率与调整后采集到的第二噪音的频率相同，且所述新风机产生的噪音的振幅处于预设振幅范围内。
  2. 根据权利要求1所述的新风机，还包括壳体，所述壳体设有热交换器，所述热交换器包括均连通外界和室内的第一换热通道以及第二换热通道，所述至少两个风机中的新风风机置于所述第一换热通道处，所述至少两个风机中的排风风机置于所述第二换热通道处。
  3. 根据权利要求2所述的新风机，其中，所述壳体设有滤网，所述滤网设置于所述第一换热通道的进口处。
  4. 根据权利要求1-3任一所述的新风机，其中，所述第一噪音检测装置以及所述第二噪音检测装置均为双麦克风。
  5. 一种新风机的降噪方法，应用于权利要求1-4任一项所述的新风机，包括：
    根据所述新风机的通风量要求，控制启动至少两个风机，且控制所述风机的启动时间，以使所述至少两个风机中一个启动的风机产生的噪音的相位与所述至少两个风机中除所述一个启动的风机外的启动的风机产生的噪音的相位相反；
    通过第一噪音检测装置采集所述一个启动的风机的第一噪音，通过第二噪音检测装置采集所述除所述一个启动的风机外的启动的风机的第二噪音；
    通过控制器接收所述第一噪音的数据并获取所述第一噪音的频率，以及接收所述第二噪音的数据并获取所述第二噪音的频率；
    在保证通风量满足预设要求的基础上，根据所述第一噪音的频率以及所述第二噪音的频率，通过所述控制器计算并调整风机的转速，以使得调整后采集 到的第一噪音的频率与调整后采集到的第二噪音的频率相同，且所述新风机产生的噪音的振幅处于预设振幅范围内。
  6. 根据权利要求5所述的新风机的降噪方法，其中，所述在保证通风量满足预设要求的基础上，根据所述第一噪音的频率以及所述第二噪音的频率，通过所述控制器计算并调整风机的转速包括：
    在获取的所述第一噪音的频率与获取的所述第二噪音的频率不相同，和所述新风机产生的噪音的振幅未处于预设振幅范围内的至少之一情况下，在保证通风量满足所述预设要求的基础上，通过所述控制器计算并调整风机的转速。
  7. 根据权利要求6所述的新风机的降噪方法，还包括：
    在获取的所述第一噪音的频率与获取的所述第二噪音的频率相同，且所述新风机产生的噪音的振幅处于所述预设振幅范围内的情况下，保持当前风机运行状态。
  8. 根据权利要求5或6所述的新风机的降噪方法，其中，所述通过所述控制器计算并调整风机的转速，包括：
    通过所述控制器根据当前的通风量，重新计算分配当前运行的风机的转速；
    通过所述控制器控制当前运行的风机按照分配后的转速运行。
  9. 根据权利要求5或6所述的新风机的降噪方法，其中，所述通过控制器计算并调整风机的转速，包括：
    通过所述控制器根据当前的通风量，控制启动新的风机并分配新的风机的转速；
    通过所述控制器控制新的风机按照分配后的转速运行。
  10. 根据权利要求9所述的新风机的降噪方法，其中，所述通风量是否满足所述预设要求通过以下方法判断：
    根据调节后的风机的转速，确定风机转速增加量或减小量，并对所有调整后的风机的转速增加量或减小量进行求和，以获取新风机的转速变化量；
    根据所述转速变化量获取新风机的通风量变化值，在所述通风量变化值处于预设变化值范围的情况下，确定所述新风机的通风量满足所述预设要求，在所述通风量变化值不处于预设变化值范围的情况下，确定所述新风机的通风量不满足所述预设要求。
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