CN115751564A - Ventilation with antifreeze function - Google Patents

Ventilation with antifreeze function Download PDF

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Publication number
CN115751564A
CN115751564A CN202211322707.5A CN202211322707A CN115751564A CN 115751564 A CN115751564 A CN 115751564A CN 202211322707 A CN202211322707 A CN 202211322707A CN 115751564 A CN115751564 A CN 115751564A
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air supply
switch
air
exhaust
antifreeze
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刘纪敏
胡健
王友伟
莫雨辰
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Vaillant Wuxi Heating Equipment Co Ltd
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Vaillant Wuxi Heating Equipment Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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Abstract

本发明提供一种具有防冻功能的通风设备,其包括壳体、供气风机、防冻开关、延时开关、和控制器。壳体具有用于供室外空气进入的供气入口、用于供室外空气排出至室内的供气出口、以及定义在供气入口和供气出口之间的供气通路。供气风机设置在供气通路内以驱动气流。防冻开关与供气风机串联连接,用于在探测到气流温度低于或等于低温阈值时断开连接。延时开关与防冻开关串联连接。控制器与供气风机、防冻开关、延时开关通信;其被配置为,当获知防冻开关断开时,关闭供气风机运行、并断开延时开关一设定时间段。通过这种设置,确保设备在寒冷的季节能够有效提供防冻的同时降低制造和运行成本。

Figure 202211322707

The invention provides a ventilation device with an antifreeze function, which includes a casing, an air supply fan, an antifreeze switch, a time delay switch, and a controller. The housing has an air supply inlet for entering outdoor air, an air supply outlet for discharging outdoor air into a room, and an air supply passage defined between the air supply inlet and the air supply outlet. An air supply fan is disposed in the air supply passage to drive air flow. An antifreeze switch is connected in series with the supply air blower for disconnection when the airflow temperature is detected to be below or equal to a low temperature threshold. The delay switch is connected in series with the antifreeze switch. The controller communicates with the air supply fan, the antifreeze switch, and the delay switch; it is configured to, when it is known that the antifreeze switch is off, turn off the air supply fan and turn off the delay switch for a set period of time. Through this setting, it is ensured that the equipment can effectively provide antifreeze in cold seasons while reducing manufacturing and operating costs.

Figure 202211322707

Description

具有防冻功能的通风设备Ventilation with antifreeze function

技术领域technical field

本公开涉及通风设备领域,尤其涉及一种通风设备的防冻控制。The present disclosure relates to the field of ventilation equipment, in particular to an antifreeze control of ventilation equipment.

背景技术Background technique

通风设备可以利用风机把室外空气向室内输送,或者将室内空气向室外排出,也可以同时向室内输送室外空气和向室外排出室内空气。在寒冷的冬季,如果向室内输送的室外空气的温度过低,会让室内的人感觉不舒服。现有的防冻解决方案有通过在设备内增加电辅热装置来提高向室内输送的室外空气的温度。然而,这样一方面会增加设备的制造成本;另一方面,由于整个设备运行期间电辅热装置都需要工作,耗电量大,也大幅增加了设备的运行成本。Ventilation equipment can use fans to deliver outdoor air to the room, or to discharge indoor air to the outside, or to deliver outdoor air to the room and exhaust indoor air to the outside at the same time. In the cold winter, if the temperature of the outdoor air delivered to the room is too low, it will make the people in the room feel uncomfortable. The existing antifreeze solution is to increase the temperature of the outdoor air delivered to the room by adding an electric auxiliary heating device in the equipment. However, on the one hand, this will increase the manufacturing cost of the equipment; on the other hand, since the electric auxiliary heating device needs to work during the entire operation of the equipment, the power consumption is large, and the operating cost of the equipment is also greatly increased.

发明内容Contents of the invention

为克服相关技术中存在的问题,本公开提供一种适用于通风设备的被动型防冻控制装置,以确保设备在寒冷的季节能够有效提供防冻的同时降低制造和运行成本。In order to overcome the problems in related technologies, the present disclosure provides a passive antifreeze control device suitable for ventilation equipment, so as to ensure that the equipment can effectively provide antifreeze in cold seasons while reducing manufacturing and operating costs.

本公开实施例提供一种具有防冻功能的通风设备,其包括壳体、供气风机、防冻开关、延时开关、和控制器。壳体具有用于供室外空气进入的供气入口、用于供室外空气排出至室内的供气出口、以及定义在供气入口和供气出口之间的供气通路。供气风机设置在供气通路内以驱动气流。防冻开关与供气风机串联连接,用于在探测到气流温度低于或等于低温阈值时断开连接。延时开关与防冻开关串联连接。控制器与供气风机、防冻开关、延时开关通信;其被配置为,当获知防冻开关断开时,关闭供气风机运行、并断开延时开关一设定时间段。An embodiment of the present disclosure provides a ventilation device with an antifreeze function, which includes a housing, an air supply fan, an antifreeze switch, a time delay switch, and a controller. The housing has an air supply inlet for entering outdoor air, an air supply outlet for discharging outdoor air into a room, and an air supply passage defined between the air supply inlet and the air supply outlet. An air supply fan is disposed in the air supply passage to drive air flow. An antifreeze switch is connected in series with the supply air blower for disconnection when the airflow temperature is detected to be below or equal to a low temperature threshold. The delay switch is connected in series with the antifreeze switch. The controller communicates with the air supply fan, the antifreeze switch, and the delay switch; it is configured to, when it is known that the antifreeze switch is off, turn off the air supply fan and turn off the delay switch for a set period of time.

在一些实施例中,控制器还被配置为,当上述设定时间段经过后闭合延时开关,如果此时防冻开关已闭合,则启动供气风机运行。In some embodiments, the controller is further configured to close the delay switch after the above-mentioned set time period elapses, and start the air supply fan to run if the antifreeze switch is closed at this time.

在一些实施例中,该通风设备还包括靠近供气入口和供气出口至少之一设置的供气气阀;控制器还被配置为,在关闭供气风机时还关闭供气气阀。In some embodiments, the ventilation device further includes an air supply valve disposed close to at least one of the air supply inlet and the air supply outlet; the controller is further configured to close the air supply valve when the air supply blower is turned off.

在一些实施例中,壳体还具有用于供室内空气进入的排气入口、用于供室内空气排出至室外的排气出口、以及定义在排气入口和排气出口之间的排气通路;通风设备还包括设置在排气通路内以驱动空气流动的排气风机。In some embodiments, the housing further has an exhaust inlet for entering indoor air, an exhaust outlet for exhausting indoor air to the outside, and an exhaust passage defined between the exhaust inlet and the exhaust outlet The ventilation device also includes an exhaust fan arranged in the exhaust passage to drive air flow.

在一些实施例中,排气风机与供气风机、防冻开关、和延时开关并联连接。In some embodiments, the exhaust fan is connected in parallel with the air supply fan, the antifreeze switch, and the time delay switch.

在一些实施例中,通风设备还包括设置在供气通路和排气通路的交叉位置处的热交换部件。In some embodiments, the ventilation device further includes a heat exchange member disposed at an intersection of the supply air passage and the exhaust air passage.

在一些实施例中,防冻开关设置在排气通路中,且位于排气出口和热交换部件之间。In some embodiments, the antifreeze switch is disposed in the exhaust passage, and is located between the exhaust outlet and the heat exchange component.

在一些实施例中,排气风机靠近排气出口设置,防冻开关设置在排气风机的出口位置。In some embodiments, the exhaust fan is arranged near the exhaust outlet, and the antifreeze switch is arranged at the outlet of the exhaust fan.

在一些实施例中,通风设备还包括并联连接在防冻开关和延时开关两端的电压检测电路;控制器还被配置为,根据电压检测电路的输出电压判断防冻开关所处回路的通断。In some embodiments, the ventilator further includes a voltage detection circuit connected in parallel to both ends of the antifreeze switch and the delay switch; the controller is further configured to determine whether the circuit where the antifreeze switch is located is on or off according to the output voltage of the voltage detection circuit.

本公开的一个或多个实施例提供的技术方案可以包括以下有益效果:通过设置防冻开关这种被动防冻方案可以降低制造和运行成本、并避免主动发热而引起的电能消耗;此外,通过设置延时开关和延时控制可有效避免风机及防冻开关的频繁启动,进而延长了零部件及系统的寿命。The technical solution provided by one or more embodiments of the present disclosure may include the following beneficial effects: by setting the antifreeze switch, this passive antifreeze solution can reduce manufacturing and operating costs, and avoid power consumption caused by active heating; The time switch and delay control can effectively avoid the frequent start of the fan and antifreeze switch, thereby prolonging the life of parts and systems.

附图说明Description of drawings

为了更清楚地说明本公开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公开的一些实施例,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。In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments of the present disclosure. For those skilled in the art, other drawings can also be obtained according to these drawings without creative work.

图1是本公开的一实施例中通风设备的工作原理示意图;Fig. 1 is a schematic diagram of the working principle of the ventilation device in an embodiment of the present disclosure;

图2是图1所示的通风设备实现防冻控制的电路连接示意图;Fig. 2 is a schematic diagram of the circuit connection of the ventilation equipment shown in Fig. 1 to realize antifreeze control;

图3是图1所示的通风设备实现防冻控制的工作流程图。Fig. 3 is a flow chart of the ventilation equipment shown in Fig. 1 implementing antifreeze control.

具体实施方式Detailed ways

以下将结合附图对所示的各实施例进行详细描述。但这些实施例并不代表与本公开相一致的所有实施例,本领域的普通技术人员根据这些实施方式所做出的结构、方法、或功能上的变换均包含在所附权利要求书所请求的保护范围内。The illustrated embodiments will be described in detail below in conjunction with the accompanying drawings. However, these embodiments do not represent all embodiments consistent with the present disclosure, and the structural, method, or functional changes made by those skilled in the art according to these embodiments are included in the requirements of the appended claims. within the scope of protection.

在一些实施例中,通风设备可以安装在室内天花板上方的空间内,其可以是仅用于将外部空气引入室内的进风设备,也可以是一全热式换气设备。以下将以全热式换气设备为例对本发明进行具体描述,但本发明同样可适用于单独用于进风的设备。参照图1所示,通风设备100为一全热式换气设备,其包括长方形壳体10。壳体10包括设置在其本体两端的若干风口管件。该等若干风口管件共有四个,成对分布在壳体本体的相对两端。位于壳体本体一端的两个风口管件分别于其末端定义有用于供室外空气进入的供气入口102、和用于供室内空气排出的排气出口101;位于壳体本体相对另一端的两个风口管件分别于其末端定义有用于供室内空气进入的排气入口104、和用于供室外空气排出的供气出口103。如图中箭头所示,在壳体内形成有风路,包括在供气入口102和供气出口103之间定义的、将外部空气从室外送至室内的供气通路(如虚线所示),和在排气入口104和排气出口101之间定义的将室内空气从室内送至室外的排气通路(如实线所示)。该通风设备100还包括靠近供气入口102和供气出口103至少之一设置的供气气阀、和靠近排气入口104和排气出口101至少之一设置的排气气阀。在本实施例中,供气气阀22和排气气阀21分别相应设置在靠近供气入口102和排气出口101处,以分别用于打开和关闭供气通路和排气通路。In some embodiments, the ventilation device can be installed in the space above the indoor ceiling, and it can be an air intake device only used to introduce external air into the room, or it can be a total heat ventilation device. Hereinafter, the present invention will be described in detail by taking total heat ventilation equipment as an example, but the present invention is also applicable to equipment used solely for air intake. Referring to FIG. 1 , the ventilating device 100 is a total heat ventilation device, which includes a rectangular shell 10 . The casing 10 includes several tuyere tubes arranged at both ends of the body. There are four of these several tuyere pipe fittings, which are distributed in pairs at opposite ends of the housing body. The two tuyere fittings located at one end of the housing body are respectively defined at their ends with an air supply inlet 102 for entering outdoor air and an exhaust outlet 101 for exhausting indoor air; The tuyere pipes are respectively defined at the ends thereof with an exhaust inlet 104 for entering indoor air and an air supply outlet 103 for exhausting outdoor air. As shown by the arrow in the figure, an air path is formed in the casing, including an air supply path (as shown by a dotted line) defined between the air supply inlet 102 and the air supply outlet 103 to send the external air from the outside to the room. And the exhaust path (as shown by the solid line) that is defined between the exhaust inlet 104 and the exhaust outlet 101 to send the indoor air from the indoor to the outdoor. The ventilator 100 also includes an air supply valve disposed close to at least one of the air supply inlet 102 and the air supply outlet 103 , and an exhaust air valve disposed adjacent to at least one of the exhaust inlet 104 and the exhaust outlet 101 . In this embodiment, the air supply valve 22 and the exhaust air valve 21 are respectively arranged close to the air supply inlet 102 and the exhaust outlet 101 for opening and closing the air supply passage and the exhaust passage respectively.

在壳体内还设有排气风机50和供气风机60,以分别用于驱动排气通路和供气通路内的气流。排气风机50和供气风机60采用相同的构造,为本领域技术人员所普遍了解的是,风机可于其腔体内设有电机和叶轮,由电机驱动叶轮,而后通过叶轮的旋转在风机腔体内形成负压,带动气流从风机进口进入,然后从风机出口排出。排气风机50可以设置在排气通路中的任意位置,供气风机60可以设置在供气通路中的任意位置。本实施例中,排气风机50靠近排气出口101设置,供气风机60靠近供气出口103设置。如图1所示,在供气通路和排气通路的交叉位置处还布置有热交换部件30,以使得通过供气通路的从室外引入的外部空气和通过排气通路从室内排出的室内空气在热交换部件内进行非接触式地热交换,从而使外部空气被加热后供入室内,在寒冷的冬季不会给用户带来不舒服感。此外,壳体内靠近热交换部件30还设置有两个滤芯40,其中一个滤芯40位于位于供气入口102和热交换部件30之间,用于过滤外部空气中杂物,以提高供给热交换部件30的空气的清洁度;另一个滤芯位于排气入口104和热交换部件30之间,用于过滤供给热交换部件30以向室外排出的空气的清洁度,以保护热交换部件并延长其寿命。上述热交换部件30和滤芯40在长时间使用、性能降低后可被抽取出以进行替换。An exhaust fan 50 and an air supply fan 60 are also provided in the casing to drive the airflow in the exhaust passage and the air supply passage respectively. The exhaust fan 50 and the air supply fan 60 adopt the same structure. It is generally understood by those skilled in the art that the fan can be provided with a motor and an impeller in its cavity, and the impeller is driven by the motor, and then the impeller is rotated in the fan chamber. Negative pressure is formed in the body, driving the airflow to enter from the fan inlet, and then discharged from the fan outlet. The exhaust fan 50 can be arranged at any position in the exhaust passage, and the air supply fan 60 can be arranged at any position in the air supply passage. In this embodiment, the exhaust fan 50 is arranged near the exhaust outlet 101 , and the air supply fan 60 is arranged near the air supply outlet 103 . As shown in Figure 1, a heat exchange component 30 is also arranged at the intersection of the air supply passage and the exhaust passage, so that the external air introduced from the outside through the air supply passage and the indoor air discharged from the room through the exhaust passage Non-contact ground heat exchange is carried out in the heat exchange part, so that the outside air is heated and supplied into the room, which will not bring discomfort to the user in the cold winter. In addition, two filter elements 40 are also arranged near the heat exchange component 30 in the casing, and one filter element 40 is located between the air supply inlet 102 and the heat exchange component 30 for filtering impurities in the external air to improve the supply of the heat exchange component. 30 air cleanliness; another filter element is located between the exhaust inlet 104 and the heat exchange component 30, used to filter the cleanliness of the air supplied to the heat exchange component 30 to be discharged to the outside, so as to protect the heat exchange component and prolong its life . The above-mentioned heat exchange component 30 and filter element 40 can be taken out for replacement after being used for a long time and performance degraded.

配合参照图2所示的电路示意,一防冻开关AF和一延时开关K4与供气风机60串联连接。防冻开关AF可以是包含有感温元件的温控开关,其中感温元件会随着温度变化而自动打开或关闭。从而,防冻开关AF可以用于在探测到气流温度低于或等于预先确定的一低温阈值时自动打开以断开电路连接,此外,也可以用于在探测到气流温度高于或等于预先确定的一高温阈值时自动闭合以重新建立电路连接。对于仅用于引入室外空气的单进风通风设备而言,防冻开关可以设置在供气通路中的任何位置。如图1所示,对于具有热交换功能的通风设备100而言,防冻开关AF可以设置在排气通路中、并位于排气出口101和热交换部件30之间;这是因为,在寒冷地区,室外空气很低,而经过热交换部件30后的室内排出空气温度仍然较高,冷热空气在此处汇聚就导致热交换部件表面结霜并可能进一步造成损害;优选地,排气风机50靠近排气出口101设置,而防冻开关AF设置在排气风机50的出口位置处。延时开关K4是为了避免室内和室外温差较大时,防冻开关AF受室内较高温度空气的影响而发生频繁开关的问题,进而导致风机频繁启停,一方面影响防冻功能的实现,另一方面也使得风机和防冻开关的寿命降低。延时开关K4可以是二极管、三极管、继电器、晶闸管、可控硅、MOS管和IGBT中的任意一种,还可以是由上述组合而成的开关模块或器件。With reference to the circuit diagram shown in FIG. 2 , an antifreeze switch AF and a delay switch K4 are connected in series with the air supply fan 60 . The antifreeze switch AF may be a temperature control switch including a temperature sensing element, wherein the temperature sensing element will be automatically turned on or off as the temperature changes. Therefore, the antifreeze switch AF can be used to automatically open to disconnect the circuit when it detects that the airflow temperature is lower than or equal to a predetermined low temperature threshold, and can also be used to detect that the airflow temperature is higher than or equal to a predetermined low temperature threshold. Automatically closes at a high temperature threshold to re-establish circuit connection. For single-inlet ventilators that are only used to bring in outside air, the antifreeze switch can be placed anywhere in the air supply path. As shown in Figure 1, for ventilation equipment 100 with heat exchange function, the antifreeze switch AF can be arranged in the exhaust passage, and between the exhaust outlet 101 and the heat exchange component 30; this is because, in cold regions , the outdoor air is very low, and the temperature of the indoor exhaust air after passing through the heat exchange unit 30 is still high, and the convergence of cold and hot air here will cause frost on the surface of the heat exchange unit and may cause further damage; preferably, the exhaust fan 50 It is set near the exhaust outlet 101 , and the antifreeze switch AF is set at the outlet of the exhaust fan 50 . The time delay switch K4 is to avoid the problem of frequent switching of the antifreeze switch AF due to the influence of the indoor high temperature air when the temperature difference between indoor and outdoor is large, which will cause the fan to start and stop frequently. On the one hand, it affects the realization of the antifreeze function, and on the other hand On the one hand, it also reduces the life of the fan and antifreeze switch. The delay switch K4 can be any one of diodes, triodes, relays, thyristors, silicon controlled rectifiers, MOS tubes and IGBTs, and can also be a switch module or device combined with the above.

如图2所示,通风设备100还包括档位开关K1、K2、K3,并联连接在防冻开关AF和延时开关K4两端的电压检测电路,以及控制器70。排气风机50与供气风机60、防冻开关AF、和延时开关K4并联连接;三个并联的档位开关K1、K2、K3分别与排气风机50与供气风机60连接,以使风机可被选择地运行于三个不同的速度。如图2所示例的电压检测电路由两个电阻R1、R2和一个双向光耦U1组成,并与控制器70连接以输出电压信号Vout,从而检测防冻开关AF和延时开关K4回路的通断状态。控制器70通常用于检测和控制通风设备内各电路器件的工作。在一些实施例中,控制器70可以是包含处理器和存储器、以及若干电子元件按照一定布线方式连接而成的控制电路。处理器可以是中央处理单元(Central Processing Unit,CPU),还可以是其他通用处理器、数字信号处理器(Digital Signal Processor,DSP)、专用集成电路(Application Specific Integrated Circuit,ASIC)、现场可编程门阵列(Field-Programmable Gate Array,FPGA)、或其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者任何常规的处理器。存储器用于存储程序指令,以供处理器调用而执行相应操作。本实施例中,控制器70为通风设备100的控制中心,可利用其各种接口通过线路与各电子元件和器件,如排气风机50、供气风机60、防冻开关AF、延时开关K4电性连接以实现通信,当然,在其他实施例中,控制器还可与各电子元件和器件通过无线方式通信。As shown in FIG. 2 , the ventilation device 100 also includes gear switches K1 , K2 , K3 , a voltage detection circuit connected in parallel to both ends of the antifreeze switch AF and the delay switch K4 , and a controller 70 . The exhaust fan 50 is connected in parallel with the air supply fan 60, the antifreeze switch AF, and the delay switch K4; the three parallel gear switches K1, K2, and K3 are respectively connected with the exhaust fan 50 and the air supply fan 60, so that the fan Can be selectively run at three different speeds. The voltage detection circuit as shown in Figure 2 is composed of two resistors R1, R2 and a bidirectional optocoupler U1, and is connected with the controller 70 to output the voltage signal Vout, thereby detecting the on-off of the antifreeze switch AF and the delay switch K4 circuit state. The controller 70 is generally used to detect and control the work of various circuit devices in the ventilation equipment. In some embodiments, the controller 70 may be a control circuit including a processor, a memory, and several electronic components connected in a certain wiring manner. The processor can be a central processing unit (Central Processing Unit, CPU), or other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field programmable Field-Programmable Gate Array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general purpose processor can be a microprocessor or any conventional processor. The memory is used to store program instructions to be invoked by the processor to perform corresponding operations. In this embodiment, the controller 70 is the control center of the ventilator 100, and various interfaces can be used to communicate with various electronic components and devices, such as the exhaust fan 50, the air supply fan 60, the antifreeze switch AF, and the delay switch K4 Electrically connected to achieve communication, of course, in other embodiments, the controller can also communicate with various electronic components and devices in a wireless manner.

以下配合图3所示的实施例来描述控制器70实现防冻控制的各工作步骤。在排气风机运行时(步骤901),控制器70控制延时开关K4闭合(步骤902),并通过上述电压检测电路判断防冻开关AF是否闭合(步骤903)。如果否,表明室外空气温度较低,如低于3℃,防冻开关AF未被触发闭合,此时室外空气不宜引入室内,则保持供气风机60关闭,并优选地保持供气气阀21关闭,同时继续尝试上述判断(步骤903);如果是,表明室外空气温度回升(如高于10℃)而触发防冻开关AF闭合,此时防冻开关AF和延时开关K4所处的回路导通,则控制器70启动供气风机60运行以将室外空气引入室内(步骤904),如果此前供气气阀21已关闭的,则进一步控制供气气阀21打开。The working steps of the controller 70 to realize antifreeze control are described below in conjunction with the embodiment shown in FIG. 3 . When the exhaust fan is running (step 901), the controller 70 controls the delay switch K4 to close (step 902), and judges whether the antifreeze switch AF is closed through the voltage detection circuit (step 903). If no, it indicates that the outdoor air temperature is relatively low, such as lower than 3°C, and the antifreeze switch AF is not triggered to close. At this time, the outdoor air should not be introduced into the room, then keep the air supply fan 60 closed, and preferably keep the air supply valve 21 closed. , and continue to try the above judgment (step 903); if yes, it indicates that the outdoor air temperature rises (such as higher than 10° C.) and triggers the antifreeze switch AF to be closed. Then the controller 70 starts the air supply fan 60 to introduce outdoor air into the room (step 904 ), if the air supply valve 21 has been closed before, then further controls the supply air valve 21 to open.

供气风机60启动后,控制器70通过电压检测电路持续监测防冻开关AF是否断开(步骤905),因为一旦防冻开关AF断开,则其回路处于断路状态,控制器70就能通过检测到的高电压判断出来。如果发现防冻开关AF断开,则控制器关闭供气风机60运行(步骤906),优选地,可同时关闭供气气阀21,并且,控制器控制延时开关断开一设定时间段(步骤907),如10分钟,如此设置是为了避免防冻开关AF受较高温度室内空气的影响而频繁闭合与断开。控制器70计时并在该设定时间段经过后返回步骤902,即闭合延时开关K4,而后重复此前步骤,即持续判断防冻开关AF是否闭合,如果是,则进一步启动供气风机60运行。After the air supply fan 60 is started, the controller 70 continuously monitors whether the antifreeze switch AF is disconnected (step 905) through the voltage detection circuit, because once the antifreeze switch AF is disconnected, its circuit is in an open circuit state, and the controller 70 can detect the The high voltage is judged. If it is found that the antifreeze switch AF is disconnected, the controller closes the air supply blower 60 to run (step 906), preferably, the supply air valve 21 can be closed at the same time, and the controller controls the delay switch to disconnect a set period of time (step 906). Step 907), for example, 10 minutes, which is set to prevent the antifreeze switch AF from being frequently closed and disconnected due to the influence of the indoor air at a relatively high temperature. The controller 70 counts and returns to step 902 after the set period of time passes, that is, closes the delay switch K4, and then repeats the previous steps, that is, continuously judges whether the antifreeze switch AF is closed, and if so, further starts the air supply fan 60 to run.

通过设置防冻开关这种被动防冻方案可以降低制造和运行成本、并避免主动发热而引起的电能消耗;此外,通过设置延时开关和延时控制可有效避免风机及防冻开关的频繁启动,进而延长了零部件及系统的寿命。By setting the antifreeze switch, which is a passive antifreeze solution, the manufacturing and operating costs can be reduced, and the power consumption caused by active heating can be avoided; in addition, the frequent start of the fan and antifreeze switch can be effectively avoided by setting the delay switch and delay control, thereby prolonging the life of parts and systems.

在上述公开中,除非另有明确的规定和限定,第一特征在第二特征“上”或“下”可以是第一特征与第二特征直接接触,或第一和第二特征通过中间媒介间接接触。并且,第一特征在第二特征“之上”、“上方”、“上面”可以是第一特征在第二特征正上方或斜上方,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”、“下面”可以是第一特征在第二特征正下方或斜下方,或仅仅表示第一特征水平高度小于第二特征。In the above disclosure, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may mean that the first feature is in direct contact with the second feature, or the first and second features pass through an intermediary indirect contact. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the level of the first feature is higher than that of the second feature. "Below", "beneath" and "under" the first feature may mean that the first feature is directly below or obliquely below the second feature, or it just means that the first feature is less horizontally than the second feature.

上述公开中所披露的方法和装置,可以通过其他的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,如控制器中单元的划分,仅为一种逻辑功能的划分,实际实现时可以有另外的划分方式,例如,多个单元可以结合或可以集成到另一个系统,或一些特征可以忽略,或不执行。另外,上述所讨论的部件、元器件、单元相互之间的连接可以是电性、机械、或其他连接形式;可以是直接连接,也可以是通过一些接口等的间接连接;可以是有线连接,也可以是无线通信。The methods and devices disclosed in the above publications can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of units in the controller is only a division of logic functions. In actual implementation, there may be other division methods. For example, multiple units can be combined or May be integrated into another system, or some features may be ignored, or not implemented. In addition, the connection between the components, components, and units discussed above may be electrical, mechanical, or other connection forms; it may be a direct connection, or it may be an indirect connection through some interfaces; it may be a wired connection, Wireless communication is also possible.

此外,上述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元;可以根据实际需要选择其中的部分或者全部单元来实现公开实施例方案的目的。另外,上述各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以是两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用硬件加软件功能单元的形式实现。In addition, the units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units; some or all of the units may be selected according to actual needs to implement the disclosed embodiments purpose of the program. In addition, each functional unit in each of the foregoing embodiments may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware, or in the form of hardware plus software functional units.

应当理解,虽然本说明书按照实施方式加以描述,但并非每个实施方式仅包含一个独立的技术方案,说明书的这种叙述方式仅仅是为清楚起见,本领域技术人员应当将说明书作为一个整体,各实施例中的技术方案也可以经适当组合,形成本领域技术人员可以理解的其他实施方式。It should be understood that although this description is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the description is only for clarity, and those skilled in the art should take the description as a whole, and each The technical solutions in the embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (9)

1. Ventilation equipment with function prevents frostbite, its characterized in that: the ventilation device comprises
A case having an air supply inlet for outdoor air to enter, an air supply outlet for outdoor air to discharge to the indoor, and an air supply passage defined between the air supply inlet and the air supply outlet;
an air supply fan disposed in the air supply passage to drive an air flow;
the anti-freezing switch is connected with the air supply fan in series and used for disconnecting when the temperature of the detected air flow is lower than or equal to a low-temperature threshold value;
the delay switch is connected with the anti-freezing switch in series;
the controller is communicated with the air supply fan, the anti-freezing switch and the delay switch; it is configured to turn off the air supply fan and turn off the delay switch for a set period of time when it is learned that the freeze switch is off.
2. The ventilation apparatus with an antifreeze function according to claim 1, wherein: the controller is further configured to close the time delay switch after the set time period has elapsed, and to start the air supply fan to operate if the freeze prevention switch is closed at that time.
3. The ventilation apparatus with an antifreeze function according to claim 1, wherein: the ventilation device also comprises an air supply valve arranged close to at least one of the air supply inlet and the air supply outlet; the controller is further configured to also close the air supply valve when the air supply fan is turned off.
4. The ventilation apparatus with an antifreeze function according to any one of claims 1 to 3, wherein: the casing is also provided with an exhaust inlet for allowing the indoor air to enter, an exhaust outlet for discharging the indoor air to the outside, and an exhaust passage defined between the exhaust inlet and the exhaust outlet; the ventilation device further includes an exhaust fan disposed in the exhaust passage to drive the flow of air.
5. The ventilation apparatus with an antifreeze function according to claim 4, wherein: the exhaust fan is connected with the air supply fan, the anti-freezing switch and the delay switch in parallel.
6. The ventilation apparatus with an antifreeze function according to claim 4, wherein: the ventilation apparatus further includes a heat exchange member provided at an intersection of the air supply passage and the air discharge passage.
7. The ventilation apparatus with an antifreeze function according to claim 6, wherein: the anti-freeze switch is disposed in the exhaust passage between the exhaust outlet and the heat exchange member.
8. The ventilation apparatus with an antifreeze function according to claim 7, wherein: the exhaust fan is close to the exhaust outlet, and the anti-freezing switch is arranged at the outlet of the exhaust fan.
9. The ventilation apparatus with an antifreeze function according to claim 1, wherein: the ventilation equipment also comprises a voltage detection circuit which is connected in parallel with the two ends of the anti-freezing switch and the delay switch; the controller is also configured to judge the on-off of a loop where the anti-freezing switch is located according to the output voltage of the voltage detection circuit.
CN202211322707.5A 2022-10-14 2022-10-14 Ventilation with antifreeze function Pending CN115751564A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003148780A (en) * 2001-11-14 2003-05-21 Daikin Ind Ltd Heat exchanger unit
JP2017067342A (en) * 2015-09-29 2017-04-06 三菱電機株式会社 Ventilation equipment
CN209147369U (en) * 2018-09-19 2019-07-23 中启能科技有限公司 A kind of monitoring device of air treatment system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003148780A (en) * 2001-11-14 2003-05-21 Daikin Ind Ltd Heat exchanger unit
JP2017067342A (en) * 2015-09-29 2017-04-06 三菱電機株式会社 Ventilation equipment
CN209147369U (en) * 2018-09-19 2019-07-23 中启能科技有限公司 A kind of monitoring device of air treatment system

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Applicant after: VAILLANT (WUXI) HEATING EQUIPMENT Co.,Ltd.

Address before: No. 55, Xiqin Road, Xinwu District, Wuxi City, Jiangsu Province

Applicant before: VAILLANT (WUXI) HEATING EQUIPMENT Co.,Ltd.

Country or region before: China

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