温控器398B
一、名称
THERMOSTAT
温控器
二、件号
398B050000,398B050000 Amdt A,398E020000,398E020000 Amdt A,398B060000,398E030000
三、章节号
36-11-35
四、适用机型
A330/A340
五、系统
36 PNEUMATIC
气源
六、安装位置
发动机吊架
七、部件原理
Detailed Description （Fig FUNC-7 Fig FUNC-8）
详细描述
The Thermostat has three parts:
– A Solenoid Assy with an electrical connector
– A Pressure Reducing Valve Assy with the Fan Air Valve port
– A Thermostat Assy with two different regulating sticks 150 °C (302 °F) and 200 °C (392 °F) and a filter.
恒温器有三个部件：
– 带电气连接器的电磁阀组件
– 带风扇空气活门接口的减压阀组件
– 带有两个不同调节杆的恒温器组件 150 °C (302 °F)和 200 °C (392 °F)，以及一个过滤器。
Operation （Fig FUNC-9 and Fig FUNC-10）
Governed by the temperature inside the piping onto which it is attached, the thermostat provides the driving pressure to the fan air valve. A solenoid allows to choose the temperature regulation level, by selecting one of the two rods which acts as a clapper. The temperature regulation levels are 150 °C (302 °F) and 200 °C (392 °F). The temperature regulation level is 200 °C (392 °F) if the solenoid is not energized (Refer to Fig FUNC-9). The temperature regulation level is 150 °C (302 °F) if the solenoid is energized (Refer to Fig FUNC-10).
操作（Fig FUNC-9 and Fig FUNC-10）
恒温器根据所连接管道内的温度，为风扇空气活门提供驱动压力。通过一个电磁阀，可以选择温度调节级别，方法是选择两根杆中的一根作为阀芯作动。 温度调节等级为 150 °C (302 °F) 和 200 °C (392 °F)。 如果电磁阀未通电，温度调节等级为 200 °C (392 °F)（参见图 FUNC-9）。 如果电磁阀通电，温度调节级别为 150 °C (302 °F)（参见图 FUNC-10）。
八、工作参数
Functional Data
– Supply Pressure:
• 0 bar rel. to 4.12 bar rel. (0 psig to 60 psig).
– Maximum Supply Temperature:
• Limit operating conditions : 230 °C (446 °F)
• In the event of failure : 260 °C (500 °F).
– Temperature Control Level:
• Solenoid inactivated : 200° C ± 15 °C (365 °F to 419 °F)
• Solenoid activated : 150 °C ± 15 °C (275 °F to 329 °F).
– Ambient Pressures:
• 0.16 bar abs. to 1.45 bar abs. (2.30 psia to 21.00 psia).
– Ambient Temperatures:
• Normal operation : – 40 °C to 180 °C (- 40 °F to 356 °F)
• Operating conditions limits : – 55 °C to 210 °C (- 67 °F to 410 °F).
– Solenoid Electrical data:
• Power supply : 17 VDC (Volt direct current) to 30 VDC
• Power consumption : 0.4 A with 28 VDC.
九、在飞机系统中的工作原理及其互联
An air-to-air Precooler Heat-Exchanger (PCE) controls the temperature of the engine bleed air supplied to the distribution system. The engine fan supplies cool air through a Fan Air Valve (FAV) to the PCE. A temperature control thermostat (THC), installed downstream of the PCE controls the butterfly plate of the FAV. This controls the quantity of cool air that enters the PCE.
空气对空气预冷却器热交换器 (PCE) 可控制供给分配系统的发动机引气的温度。 发动机风扇通过风扇空气活门 (FAV) 向 PCE 提供冷空气。 安装在 PCE 下游的温度控制恒温器 (THC) 可控制 FAV 的蝶板。 这可以控制进入 PCE 的冷空气量。
Temperature limitation system (Ref. Fig. 007)
温度限定系统
This sub-system comprises the following components:
– a precooler exchanger
– a fan air valve associated with a control thermostat.
该子系统包括以下组件：
-预冷器换热器
-与控制恒温器相关联的风扇空气活门。
This sub-system enables the aircraft systems to be supplied with air under a normal temperature lower than or equal to 200⁰C. A second level of control at 150⁰C (adjustable) is available. It is activated by the BMC according to the demand of the air conditioning system. The bleed air is cooled down by modulating the air flow bled from the engine fan through the precooler exchanger. At the precooler exchanger outlet, the control thermostat adjusts the fan air valve control pressure and thereby the valve butterfly position so as to limit the temperature at the above mentioned values.
该子系统使飞机系统能够在低于或等于200⁰C的正常温度下提供空气。150⁰C的次级控制（可调）。它由BMC根据空调系统的需求进行激活。通过调节从发动机风扇到预冷却器换热器的引气流量来冷却引气。在预冷器换热器出口处，控制恒温器调节风扇空气活门的控制压力，从而调节活门板的位置，从而将温度限制在上述值处。
Fan air valve control thermostat (Ref. Fig. 020)
风扇空气活门控制恒温器
(a) Description
说明
The control thermostat consists of :
– an assembly comprising two temperature probes
– a pressure reducing assembly.
控制恒温器包括：
– 由两个温度探头组成的组件
– 一个减压组件。
(b) Operation
运行（工作）
The assembly including the fan air valve and the fan air valve control thermostat is capable of adjusting the temperature detected by the corresponding probe to a stabilized value.
包括风扇空气活门和风扇空气活门控制恒温器在内的组件能够将相应探头检测到的温度调整到稳定值。
The control thermostat supplies and controls the fan air valve motive pressure depending on the precooler exchanger outlet temperature.
控制恒温器根据预冷却器交换器出口温度提供并控制风扇空气活门的动力压力。
The thermostat provides two temperature settings selected by means of a solenoid:
– solenoid not energized: 200 plus or minus 15⁰C
– solenoid energized: 150 plus or minus 15⁰C.
恒温器提供两种温度设置，通过电磁阀选择：
– 电磁阀未通电：200±15⁰C
– 电磁阀通电： 150±15⁰C。
NOTE : In addition, ECAM Display introduces a tolerance for temperature indication of plus or minus 5⁰C. Therefore, the regulated temperature downstream of the precooler exchanger shown on the ECAM, must be within these tolerances.
– solenoid not energized: 200 plus or minus 20⁰C.
– solenoid energized: 150 plus or minus 20⁰C.
注：此外，ECAM 显示屏的温度指示容差为± 5⁰C。 因此，ECAM 显示的预冷却器交换器下游的调节温度必须在这些公差范围内。
– 电磁阀未通电：200±20⁰C
– 电磁阀通电： 150±20⁰C。
This solenoid is energized by the BMC in case of pack low temperature demand. This function is inhibited when the wing anti ice system is selected on.
在需要低温pack时，BMC 会给该电磁阀通电。 当选择打开机翼防冰系统时，该功能将被抑制。
(c) Thermostat pressure reducing valve
恒温器减压阀
The pressure used by the control thermostat is picked off from the outlet of the precooler exchanger. The pressure sent to the fan air valve opening chamber is modulated by the expansion of the temperature probes.
控制恒温器使用的压力是从预冷却器交换器的出口处提取的。 送至风扇空气活门开启腔的压力由温度探头的膨胀调节。
(d) Temperature probes
温度探头
The control thermostat ensures temperature regulation to two different levels(150⁰C and 200⁰C) depending on the command that it receives from the solenoid. When the solenoid is not energized,the probe adjusted to 150⁰C is isolated and the control thermostat regulates the temperature to 200⁰C. When the solenoid is energized,the probe adjusted to 200⁰C is isolated and the control thermostat regulates the temperature to 150⁰C.
控制恒温器根据从电磁阀接收到的指令，确保将温度调节到两个不同的水平（150⁰C 和 200⁰C）。 当电磁阀不通电时，调节到 150⁰C 的探头被隔离，控制恒温器将温度调节到 200⁰C。 电磁阀通电时，调节至 200⁰C 的探头被隔离，控制恒温器将温度调节至 150⁰C。
