CN202074654U - Closed-loop control system for controlling constant air volume of purification air conditioner system - Google Patents

Closed-loop control system for controlling constant air volume of purification air conditioner system Download PDF

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CN202074654U
CN202074654U CN2011201706343U CN201120170634U CN202074654U CN 202074654 U CN202074654 U CN 202074654U CN 2011201706343 U CN2011201706343 U CN 2011201706343U CN 201120170634 U CN201120170634 U CN 201120170634U CN 202074654 U CN202074654 U CN 202074654U
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wind speed
unit
supply pipeline
controller
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白浩强
魏晓蒙
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Xi'an four Teng Environmental Technology Co., Ltd.
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SITENG ENGINEERING Co Ltd XI'AN
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Abstract

本实用新型公开了一种净化空调***送风量恒定控制用闭环控制***，包括安装在新风机组与循环机组之间的送风管路上且对送风管路内的风速进行实时检测的风速检测单元、对送风管路的送风量进行实时检测的风量检测单元、根据风速检测单元所检测的风速信息对新风机组的工作频率进行调整并相应对送风管路内的风速进行调整的控制器以及与控制器相接的参数设置单元和报警提示单元，新风机组的变频器由控制器进行控制。本实用新型设计合理、接线方便、安装布设简便且使用操作简便、使用效果好，能解决现有净化空调***存在的使用效果较差、在送风量不足时不能采取有效处理措施、不能真正实现送风量恒定控制等问题。

The utility model discloses a closed-loop control system for constant air supply volume control of a purification air-conditioning system, which comprises a wind speed detection device installed on the air supply pipeline between the fresh air unit and the circulation unit and for real-time detection of the wind speed in the air supply pipeline unit, the air volume detection unit for real-time detection of the air supply volume of the air supply pipeline, and the control to adjust the operating frequency of the fresh air unit according to the wind speed information detected by the wind speed detection unit and to adjust the wind speed in the air supply pipeline accordingly The inverter, the parameter setting unit and the alarm prompt unit connected with the controller, the frequency converter of the fresh air unit is controlled by the controller. The utility model has the advantages of reasonable design, convenient wiring, simple installation and layout, easy operation and good use effect, and can solve the problem of poor use effect existing in the existing purification air-conditioning system. Constant air supply control and other issues.

Description

净化空调***送风量恒定控制用闭环控制***Closed-loop control system for constant air supply volume control of purification air-conditioning system

技术领域 technical field

本实用新型涉及一种闭环控制***，尤其是涉及一种净化空调***送风量恒定控制用闭环控制***。The utility model relates to a closed-loop control system, in particular to a closed-loop control system for constant air supply volume control of a purification air-conditioning system.

背景技术 Background technique

随着医疗技术的发展和人们对医疗条件需求的不断提高，对医疗手术室的洁净要求也越来越高，解决手术室洁净的主要手段之一就是为手术室配置良好的风处理***(即净化空调***)，以达到控制生物微粒防止术后感染。实际使用过程中，根据实际需要手术室内所配置的风处理***通常都包括循环机组和新风机组，上述循环机组和新风机组配合使用。实际使用过程中，由于洁净手术室内的新鲜空气是采集室外空气，经过多级过滤后，再经过湿热处理的达标洁净空气，如果所使用的空气是全处理、全排放的使用方式时，其资源浪费极大。因而手术室内一般都需采用循环风加新风的送风方式，即采集手术室内的空气并与经过处理的新风混合再经湿热处理后送到手术室内进行循环利用，这就需要循环机组。而新风机组是提供新鲜空气的一种空气调节设备，以满足手术室人员呼吸及补偿室内排风保持室内正压的需要。新风机组的工作原理是在室外抽取新鲜的空气经过初、中、亚高效三级过滤，经降温除湿或升温等处理后通过风机送到循环机组混合段与室内回风混合后，经处理达到室内送风点温度后送入手术室，以改善室内空气品质及维持室内正压。With the development of medical technology and the continuous improvement of people's demand for medical conditions, the requirements for the cleanliness of medical operating rooms are also getting higher and higher. One of the main means to solve the problem of operating room cleanliness is to configure a good air treatment system for the operating room (i.e. Purify the air conditioning system) to achieve control of biological particles to prevent postoperative infection. In actual use, the air treatment system configured in the operating room usually includes a circulation unit and a fresh air unit according to actual needs, and the above circulation unit and the fresh air unit are used in conjunction. In the actual use process, since the fresh air in the clean operating room is to collect outdoor air, pass through multi-stage filtration, and then pass through humid heat treatment to meet the standard clean air, if the air used is fully treated and fully discharged, its resources It was a huge waste. Therefore, the operating room generally needs to adopt the air supply method of circulating air and fresh air, that is, the air in the operating room is collected and mixed with the treated fresh air, and then sent to the operating room for recycling after heat treatment, which requires a circulating unit. The fresh air unit is a kind of air-conditioning equipment that provides fresh air to meet the needs of operating room personnel to breathe and compensate for indoor exhaust to maintain indoor positive pressure. The working principle of the fresh air unit is to extract fresh air outdoors, pass through primary, medium and sub-high-efficiency three-stage filtration, and after cooling and dehumidification or heating, it is sent to the mixing section of the circulation unit through the fan to mix with the indoor return air, and then reaches the indoor air after treatment. The temperature of the air supply point is sent to the operating room to improve the indoor air quality and maintain indoor positive pressure.

现如今，实际使用过程中，净化空调***中各管段段位所安装的过滤器(具体是新风机组上所安装的多级过滤器)一旦堵塞后，便使得新风机组送至室内的送风量减小，而当新风机组送至室内的送风量减小后，净化空调***中对应设置的报警器才会发出送风量不足的报警提示，以提醒相应技术人员及时对过滤器的堵塞状态进行处理。但是，由于当报警器发出送风量不足的报警提示时，新风机组送至室内的送风量已处于减小状态，因而现有的送风量恒定控制***并没有真正实现净化空调***的送风量恒定控制。众所周知，净化空调***中新风机组与循环机组之间的送风口上安装有定风量调节阀，实际使用过程中，通过风量检测单元对由新风机组送至循环机组的新风风量进行实时检测，当检测得出由新风机组送至循环机组的新风风量过大时，通过自动调节定风量调节阀，便可以实现对新风风量进行恒定控制；但是，当检测得出由新风机组送至循环机组的新风风量过小时，即送至循环机组的新风风量不足时，却没有任何处理措施，只能待送风量减小至报警器的报警阈值时，报警器发出相应的报警提示以便进行相应处理，因而不能实现真正地送风量恒定控制。Nowadays, in the actual use process, once the filters installed in each pipe section of the purification air conditioning system (specifically, the multi-stage filter installed on the fresh air unit) are blocked, the air supply volume sent to the room by the fresh air unit will be reduced. However, when the air supply volume sent to the room by the fresh air unit decreases, the corresponding alarm set in the purification air-conditioning system will issue an alarm prompt of insufficient air supply volume to remind the corresponding technicians to check the clogged state of the filter in time. deal with. However, since the air supply volume sent to the room by the fresh air unit has been reduced when the alarm sends out an alarm prompt of insufficient air supply volume, the existing constant air supply volume control system does not really realize the purification of the air supply system. Constant air volume control. As we all know, a constant air volume regulating valve is installed on the air supply port between the fresh air unit and the circulation unit in the purification air conditioning system. When it is found that the fresh air volume sent from the fresh air unit to the circulation unit is too large, the constant control of the fresh air volume can be realized by automatically adjusting the constant air volume control valve; however, when the detection shows that the fresh air volume sent from the fresh air unit to the circulation unit When it is too small, that is, when the fresh air volume sent to the circulating unit is insufficient, there is no treatment measure. When the air volume is reduced to the alarm threshold of the alarm, the alarm will send out a corresponding alarm prompt for corresponding processing, so it cannot Realize the real constant control of the air supply volume.

实用新型内容 Utility model content

本实用新型所要解决的技术问题在于针对上述现有技术中的不足，提供一种净化空调***送风量恒定控制用闭环控制***，其设计合理、接线方便、安装布设简便且使用操作简便、使用效果好，能有效解决现有净化空调***存在的使用效果较差、在送风量不足时不能采取有效处理措施、不能真正实现送风量恒定控制等问题。The technical problem to be solved by the utility model is to provide a closed-loop control system for constant air supply volume control of the purification air-conditioning system in view of the deficiencies in the above-mentioned prior art. The effect is good, and it can effectively solve the problems existing in the existing purification air-conditioning system, such as the poor use effect, the inability to take effective treatment measures when the air supply volume is insufficient, and the inability to truly realize the constant control of the air supply volume.

为解决上述技术问题，本实用新型采用的技术方案是：一种净化空调***送风量恒定控制用闭环控制***，其特征在于：包括安装在新风机组与循环机组之间的送风管路上且对所述送风管路内的风速进行实时检测的风速检测单元、对所述送风管路的送风量进行实时检测的风量检测单元、根据风速检测单元所检测的风速信息对所述新风机组的工作频率进行调整并相应对所述送风管路内的风速进行调整的控制器、与所述控制器相接的参数设置单元和由控制器进行控制的报警提示单元，所述新风机组的变频器由控制器进行控制且所述变频器与控制器相接，所述风速检测单元和风量检测单元均与控制器相接，所述报警提示单元与控制器相接；所述风速检测单元、控制器和变频器组成通过调整所述送风管路内的风速达到对所述送风管路的送风量进行恒定控制的闭环控制***。In order to solve the above technical problems, the technical solution adopted by the utility model is: a closed-loop control system for constant air supply volume control of the purification air-conditioning system, which is characterized in that: it is installed on the air supply pipeline between the fresh air unit and the circulation unit and A wind speed detection unit for real-time detection of the wind speed in the air supply pipeline, an air volume detection unit for real-time detection of the air supply volume of the air supply pipeline, and a wind speed detection unit for the fresh air A controller that adjusts the operating frequency of the unit and adjusts the wind speed in the air supply pipeline accordingly, a parameter setting unit connected to the controller, and an alarm prompt unit controlled by the controller, the fresh air unit The frequency converter is controlled by a controller and the frequency converter is connected to the controller, the wind speed detection unit and the air volume detection unit are connected to the controller, and the alarm prompt unit is connected to the controller; the wind speed detection The unit, the controller and the frequency converter form a closed-loop control system for constant control of the air supply volume of the air supply pipeline by adjusting the wind speed in the air supply pipeline.

上述净化空调***送风量恒定控制用闭环控制***，其特征是：所述风速检测单元为安装在所述送风管路内壁上的风速传感器。The above-mentioned closed-loop control system for constant air supply volume control of the purification air-conditioning system is characterized in that: the wind speed detection unit is a wind speed sensor installed on the inner wall of the air supply pipeline.

上述净化空调***送风量恒定控制用闭环控制***，其特征是：所述风速检测单元安装在所述送风管路中的水平直管段上。The above-mentioned closed-loop control system for constant air supply volume control of the purification air-conditioning system is characterized in that: the wind speed detection unit is installed on a horizontal straight pipe section in the air supply pipeline.

上述净化空调***送风量恒定控制用闭环控制***，其特征是：还包括对所述送风管路的送风量进行实时检测的风量检测单元，所述风量检测单元与控制器相接。The above-mentioned closed-loop control system for constant air supply volume control of the purification air conditioning system is characterized in that it further includes an air volume detection unit for real-time detection of the air supply volume of the air supply pipeline, and the air volume detection unit is connected to the controller.

上述净化空调***送风量恒定控制用闭环控制***，其特征是：还包括安装在所述送风管路上的定风量调节阀，所述定风量调节阀由控制器进行控制且其与控制器相接。The above-mentioned closed-loop control system for constant air supply volume control of the purification air-conditioning system is characterized in that it also includes a constant air volume regulating valve installed on the air supply pipeline, and the constant air volume regulating valve is controlled by a controller and is connected with the controller connect.

上述净化空调***送风量恒定控制用闭环控制***，其特征是：所述送风管路的起端安装在所述新风机组的出风口上且其末端安装在所述循环机组上所设置的送风口上，所述风量调节阀安装在所述送风口上。The above-mentioned closed-loop control system for constant air supply volume control of the purification air-conditioning system is characterized in that: the starting end of the air supply pipeline is installed on the air outlet of the fresh air unit and the end is installed on the circulation unit. On the air supply port, the air volume regulating valve is installed on the air supply port.

本实用新型与现有技术相比具有以下优点：Compared with the prior art, the utility model has the following advantages:

1、设计合理、接线方便且安装布设方便。1. Reasonable design, convenient wiring and convenient installation and layout.

2、使用操作简便，只需通过风速检测单元和风量检测单元对送风管路内的风速和风量进行检测，并根据检测结果且通过控制器对新风机组的变频器进行控制，便可将送风管路内的风速调整至设计值，并相应维持送风管路内的送风量恒定。2. It is easy to use and operate. It only needs to detect the wind speed and air volume in the air supply pipeline through the wind speed detection unit and the air volume detection unit, and control the frequency converter of the fresh air unit through the controller according to the detection results, and then the air supply can be sent The wind speed in the air pipeline is adjusted to the design value, and the air supply volume in the air supply pipeline is kept constant accordingly.

3、使用效果好，控制器根据风速检测单元所检测风速信息对新风机组的变频器进行同步控制，并将当前状态的实际风速快速调整至设计风速，从而实现了在过滤器堵塞情况下，维持送风管路送风量恒定的目的。3. The use effect is good. The controller performs synchronous control on the frequency converter of the fresh air unit according to the wind speed information detected by the wind speed detection unit, and quickly adjusts the actual wind speed in the current state to the design wind speed, thus realizing the maintenance of the filter when the filter is clogged. The purpose of constant air supply in the air supply pipeline.

4、投入成本低且推广应用前景广泛，能有效适用至洁净手术室等需进行送风量恒定控制的领域中。4. The input cost is low and the promotion and application prospects are broad, and it can be effectively applied to clean operating rooms and other fields that require constant control of air supply volume.

综上所述，本实用新型设计合理、接线方便、安装布设简便且使用操作简便、使用效果好，能有效解决现有净化空调***存在的使用效果较差、在送风量不足时不能采取有效的处理措施、不能真正实现送风量恒定控制等缺陷和不足。To sum up, the utility model has reasonable design, convenient wiring, simple installation and layout, easy operation and good use effect, and can effectively solve the problem of poor use effect existing in the existing purification air-conditioning system. Defects and deficiencies such as the processing measures and the inability to truly realize the constant control of the air supply volume.

下面通过附图和实施例，对本实用新型的技术方案做进一步的详细描述。The technical solutions of the present utility model will be further described in detail through the drawings and embodiments below.

附图说明 Description of drawings

图1为本实用新型的电路原理框图。Fig. 1 is the block diagram of circuit principle of the utility model.

附图标记说明：Explanation of reference signs:

1-风速检测单元；2-变频器；      3-控制器；1-wind speed detection unit; 2-frequency converter; 3-controller;

4-参数设置单元；5-风量检测单元；6-报警提示单元；4-parameter setting unit; 5-air volume detection unit; 6-alarm prompt unit;

7-定风量调节阀。7-Constant air volume regulating valve.

具体实施方式 Detailed ways

如图1所示，本实用新型包括安装在新风机组与循环机组之间的送风管路上且对所述送风管路内的风速进行实时检测的风速检测单元1、对所述送风管路的送风量进行实时检测的风量检测单元5、根据风速检测单元1所检测的风速信息对所述新风机组的工作频率进行调整并相应对所述送风管路内的风速进行调整的控制器3、与所述控制器3相接的参数设置单元4和由控制器3进行控制的报警提示单元6，所述新风机组的变频器2由控制器3进行控制且所述变频器2与控制器3相接，所述风速检测单元1和风量检测单元5均与控制器3相接，所述报警提示单元6与控制器3相接。所述风速检测单元1、控制器3和变频器2组成通过调整所述送风管路内的风速达到对所述送风管路的送风量进行恒定控制的闭环控制***。As shown in Figure 1, the utility model includes a wind speed detection unit 1 which is installed on the air supply pipeline between the fresh air unit and the circulation unit and detects the wind speed in the air supply pipeline in real time. The air volume detection unit 5 that detects the air supply volume of the road in real time, adjusts the operating frequency of the fresh air unit according to the wind speed information detected by the wind speed detection unit 1, and adjusts the wind speed in the air supply pipeline accordingly device 3, a parameter setting unit 4 connected to the controller 3 and an alarm prompt unit 6 controlled by the controller 3, the frequency converter 2 of the fresh air unit is controlled by the controller 3 and the frequency converter 2 and the The controller 3 is connected, the wind speed detection unit 1 and the air volume detection unit 5 are both connected to the controller 3 , and the alarm prompt unit 6 is connected to the controller 3 . The wind speed detection unit 1 , the controller 3 and the frequency converter 2 form a closed-loop control system for constant control of the air supply volume of the air supply pipeline by adjusting the wind speed in the air supply pipeline.

本实施例中，本实用新型还包括由控制器3进行控制的报警提示单元6，且所述报警提示单元6与控制器3相接。所述风速检测单元1为安装在所述送风管路内壁上的风速传感器。实际进行安装时，所述风速检测单元1安装在所述送风管路中的水平直管段上。In this embodiment, the utility model also includes an alarm prompt unit 6 controlled by the controller 3 , and the alarm prompt unit 6 is connected to the controller 3 . The wind speed detection unit 1 is a wind speed sensor installed on the inner wall of the air supply pipeline. During actual installation, the wind speed detection unit 1 is installed on a horizontal straight pipe section in the air supply pipeline.

同时，为实现精确控制，本实用新型还包括安装在所述送风管路上的定风量调节阀7，所述定风量调节阀7由控制器3进行控制且其与控制器3相接。本实施例中，所述送风管路的起端安装在所述新风机组的出风口上且其末端安装在所述循环机组上所设置的送风口上，所述风量调节阀7安装在所述送风口上。At the same time, in order to achieve precise control, the utility model also includes a constant air volume regulating valve 7 installed on the air supply pipeline, and the constant air volume regulating valve 7 is controlled by the controller 3 and connected to the controller 3 . In this embodiment, the starting end of the air supply pipeline is installed on the air outlet of the fresh air unit and the end is installed on the air supply outlet provided on the circulation unit, and the air volume regulating valve 7 is installed on the above the air supply port.

使用之前，先通过参数设置单元4输入所述送风管路内的设计风速和设计风量。实际使用过程中，所述风速检测单元1对新风机组与循环机组之间所安装送风管路内的风速进行实时检测，并将所检测风速信息同步传送至控制器3；同时，所述风量检测单元5对所述送风管路的送风量进行实时检测并将所检测风量信息同步传送至控制器3。当所述新风机组中的某一个或多个过滤器发生堵塞并使得时所述送风管路内的风速减小时，控制器3同步对变频器2进行控制，并通过变频器2对所述新风机组的工作频率进行相应调整，直至所述送风管路内的风速达到设计风速(此设计风速为达到设计风量时所需的风速)为止，从而达到对所述送风管路的送风量进行恒定控制的目的。Before use, first input the design wind speed and design air volume in the air supply pipeline through the parameter setting unit 4 . During actual use, the wind speed detection unit 1 detects the wind speed in the air supply pipeline installed between the fresh air unit and the circulation unit in real time, and synchronously transmits the detected wind speed information to the controller 3; at the same time, the air volume The detection unit 5 detects the air supply volume of the air supply pipeline in real time and transmits the detected air volume information to the controller 3 synchronously. When one or more filters in the fresh air unit are blocked and the wind speed in the air supply pipeline decreases, the controller 3 controls the frequency converter 2 synchronously, and controls the frequency converter 2 through the frequency converter 2. The working frequency of the fresh air unit is adjusted accordingly until the wind speed in the air supply pipeline reaches the design wind speed (this design wind speed is the wind speed required when reaching the design air volume), so as to achieve the air supply to the air supply pipeline. The purpose of constant control of the quantity.

同时，由于风量检测单元5对所述送风管路的送风量进行实时检测，则当所述送风管路内的送风量过大时，则控制器3对定风量调节阀7进行调控，并将所述送风管路内的送风量调整至设计风量；而当所述送风管路内的送风量不足且达到报警提示单元6的报警阈值时或者所述风速检测单元1检测到送风管路内的风速减小时，则报警提示单元6及时发出报警提示，以便对过滤器的堵塞问题进行相应处理。因而，实际使用过程中，某一个或多个过滤器堵塞后对所述送风管路内的风速进行调控的过程与报警提示单元6的报警提示过程并不矛盾。Simultaneously, since the air volume detection unit 5 detects the air supply volume of the air supply pipeline in real time, when the air supply volume in the air supply pipeline is too large, the controller 3 performs a constant air volume control valve 7 control, and adjust the air supply volume in the air supply pipeline to the design air volume; and when the air supply volume in the air supply pipeline is insufficient and reaches the alarm threshold of the alarm prompt unit 6 or the wind speed detection unit 1. When it is detected that the wind speed in the air supply pipeline decreases, the alarm prompt unit 6 sends out an alarm prompt in time, so as to deal with the clogging of the filter accordingly. Therefore, in actual use, the process of regulating the wind speed in the air supply pipeline after one or more filters are clogged is not inconsistent with the alarm prompt process of the alarm prompt unit 6 .

以上所述，仅是本实用新型的较佳实施例，并非对本实用新型作任何限制，凡是根据本实用新型技术实质对以上实施例所作的任何简单修改、变更以及等效结构变化，均仍属于本实用新型技术方案的保护范围内。The above are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any simple modifications, changes and equivalent structural changes made to the above embodiments according to the technical essence of the present utility model still belong to Within the scope of protection of the technical solution of the utility model.

Claims (5)

1. constant control closed-loop control system of air cleaning and conditioning system air output, it is characterized in that: the wind speed detecting unit (1) that comprises on the air-supply pipeline that is installed between new blower fan group and the Cycle Unit and the wind speed in the described air-supply pipeline is detected in real time, the air quantity detecting unit (5) that the air output of described air-supply pipeline is detected in real time, the operating frequency of described new blower fan group is adjusted and is tackled mutually the controller (3) that the wind speed in the described air-supply pipeline is adjusted according to the wind speed information that wind speed detecting unit (1) is detected, parameter set unit (4) of joining with described controller (3) and the alarm unit of controlling by controller (3) (6), the frequency converter of described new blower fan group (2) is controlled by controller (3) and described frequency converter (2) joins with controller (3), described wind speed detecting unit (1) and air quantity detecting unit (5) all join with controller (3), and described alarm unit (6) joins with controller (3); Described wind speed detecting unit (1), controller (3) and frequency converter (2) composition reach the closed-loop control system of the air output of described air-supply pipeline being carried out constant control by the wind speed of adjusting in the described air-supply pipeline.
2. according to the constant control closed-loop control system of the described air cleaning and conditioning system air output of claim 1, it is characterized in that: described wind speed detecting unit (1) is for being installed in the air velocity transducer on the described air-supply pipeline inner wall.
3. according to claim 1 or the constant control closed-loop control system of 2 described air cleaning and conditioning system air outputs, it is characterized in that: described wind speed detecting unit (1) is installed on the straight horizontal pipeline section in the described air-supply pipeline.
4. according to claim 1 or the constant control closed-loop control system of 2 described air cleaning and conditioning system air outputs, it is characterized in that: also comprise being installed in and decide volume damper (7) on the described air-supply pipeline, describedly decide that volume damper (7) is controlled by controller (3) and itself and controller (3) join.
5. according to the constant control closed-loop control system of the described air cleaning and conditioning system air output of claim 4, it is characterized in that: the origin or beginning of described air-supply pipeline is installed on the air outlet of described new blower fan group and its end is installed on the air outlet set on the described Cycle Unit, and described volume damper (7) is installed on the described air outlet.
CN2011201706343U 2011-05-25 2011-05-25 Closed-loop control system for controlling constant air volume of purification air conditioner system Expired - Lifetime CN202074654U (en)

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CN102661284A (en) * 2012-05-30 2012-09-12 中铁一局集团有限公司 Energy-saving running control system and method for tunnel construction ventilation system
CN103644630A (en) * 2013-11-28 2014-03-19 中山市蓝水能源科技发展有限公司 Central air-conditioning pipeline detection system
CN104110794A (en) * 2014-06-27 2014-10-22 广东美的制冷设备有限公司 Air conditioner and air speed control method and device thereof
CN104236011A (en) * 2013-06-24 2014-12-24 美的集团股份有限公司 Constant air volume conditioner and control method thereof
CN104564766A (en) * 2014-12-25 2015-04-29 蚌埠依爱电子科技有限责任公司 Control method for outputting specified air volume by variable frequency fan under constant pressure
WO2016029532A1 (en) * 2014-08-28 2016-03-03 中山大洋电机股份有限公司 Air-conditioning system
CN105783209A (en) * 2014-12-22 2016-07-20 Tcl空调器(中山)有限公司 Air conditioner and control method thereof
WO2018014634A1 (en) * 2016-07-21 2018-01-25 广东美的制冷设备有限公司 Air conditioning air flow volume automatic compensation control method and system, and air conditioner
CN108332299A (en) * 2018-01-30 2018-07-27 山东耘威医疗科技有限公司 A kind of laboratory ion cleaning module
CN112177961A (en) * 2020-09-10 2021-01-05 珠海格力电器股份有限公司 Fan frequency control method and device, air curtain machine and display cabinet

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CN102661284A (en) * 2012-05-30 2012-09-12 中铁一局集团有限公司 Energy-saving running control system and method for tunnel construction ventilation system
CN104236011B (en) * 2013-06-24 2017-06-30 美的集团股份有限公司 The air-conditioner and its control method of permanent wind amount
CN104236011A (en) * 2013-06-24 2014-12-24 美的集团股份有限公司 Constant air volume conditioner and control method thereof
CN103644630A (en) * 2013-11-28 2014-03-19 中山市蓝水能源科技发展有限公司 Central air-conditioning pipeline detection system
CN104110794A (en) * 2014-06-27 2014-10-22 广东美的制冷设备有限公司 Air conditioner and air speed control method and device thereof
CN104110794B (en) * 2014-06-27 2017-06-16 广东美的制冷设备有限公司 Air-conditioning and its wind speed control method and device
WO2016029532A1 (en) * 2014-08-28 2016-03-03 中山大洋电机股份有限公司 Air-conditioning system
CN105783209A (en) * 2014-12-22 2016-07-20 Tcl空调器(中山)有限公司 Air conditioner and control method thereof
CN105783209B (en) * 2014-12-22 2019-06-07 Tcl空调器(中山)有限公司 Air conditioner and its control method
CN104564766A (en) * 2014-12-25 2015-04-29 蚌埠依爱电子科技有限责任公司 Control method for outputting specified air volume by variable frequency fan under constant pressure
CN104564766B (en) * 2014-12-25 2016-04-13 蚌埠依爱电子科技有限责任公司 Control method for outputting specified air volume by variable frequency fan under constant pressure
WO2018014634A1 (en) * 2016-07-21 2018-01-25 广东美的制冷设备有限公司 Air conditioning air flow volume automatic compensation control method and system, and air conditioner
CN108332299A (en) * 2018-01-30 2018-07-27 山东耘威医疗科技有限公司 A kind of laboratory ion cleaning module
CN112177961A (en) * 2020-09-10 2021-01-05 珠海格力电器股份有限公司 Fan frequency control method and device, air curtain machine and display cabinet

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