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实用新型
CN205573962U 一种用于列车的PTC电加热器 失效 - 放弃

一种用于列车的PTC电加热器
摘要：
本实用新型公开了一种用于列车的PTC电加热器，包括：至少两个继电器，其设置在电路箱内；以及高电平电路，包括至少两个高电平支路，每个所述高电平支路连接PTC陶瓷电阻；所述高电平支路分别连接所述继电器，所述继电器选择性的接通和断开所述高电平支路；低电平电路，包括至少两个低电平支路，每个所述低电平支路分别连接不同的所述继电器，能够使所述继电器接通和断开，实现所述高电平支路的通断；挡位切换装置，其固定在所述电路箱外部，选择性的将电源和所述低电平支路之一接通；至少一个二极管，连接相邻的所述低电平支路。采用电路支路结构，使列车司机能够根据需要选择不同的支路进行温度调节，确保列车司机室的温度。
摘要（英）：

The utility model discloses a PTC electric heater for train, include: two at least relays, it sets up in circuit case, and the high level circuit, including two at least high level branch roads, every the PTC ceramic resistor is connected to the high level branch road, the high level branch road is connected respectively the relay, selective switch -on of relay and disconnection the high level branch road, the low level circuit, including two at least low level branch roads, every the difference is connected respectively to the low level branch road the relay can make relay switch -on and disconnection realize the break -make of high level branch road, keep off position auto -change over device, it is fixed circuit case is outside, selective with the power with the switch -on of one of low level branch road, at least one diode is connected adjacently the low level branch road. Adopt the branch circuit structure, make the train driver can select different branch roads to carry out temperature regulation as required, ensure the temperature of train cab.

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