• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a domestic appliance device, in particular, to a cooking appliance device, with at least one electronics unit (10a-c) and with at least one voltage protection circuit (12a-c) ) having at least one protection unit (14a-c) which is connected in parallel to the electronics unit (10a-c), and which protects the electronics unit (10a-c) in at least a first state of malfunction. In order to improve its protective effect, it is proposed that the voltage protection circuit (12a-c) comprises at least one expansion circuit (16a-c) that extends the protective effect of the protection unit (14a- c) in such a way that the protection unit (14a-c) protects the electronics unit (10a-c) in at least a second erroneous operating state. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2633458A1
    申请号:ES201630337
    申请日:2016-03-21
    公开日:2017-09-21
    发明作者:Ivan Alonso Ladeiro；Pablo Jesus Hernandez Blasco；Guillermo Lazaro Amatriain；Antonio Muñoz Fumanal；Jose Joaquin Paricio Azcona；Diego Puyal Puente
    申请人:BSH Hausgeraete GmbH；BSH Electrodomesticos Espana SA；
    IPC主号:
    专利说明:

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    In order to protect the electronics unit 10a against overvoltage and / or against voltage surges, and / or to comply with legal provisions, in particular, IEC 61000-4-5, the household appliance also includes a protection circuit against voltage 12a (see figure 2).
    The voltage protection circuit 12a has a protection unit 14a. The protection unit 14a has a first terminal. The first terminal of the protection unit 14a is connected to the first power terminal of the power supply unit 34a, in particular, to the external conductor and / or the phase. In addition, the protection unit 14a has a second terminal. The second terminal of the protection unit 14a is connected to the second power terminal of the power supply unit 34a, in particular, to the neutral conductor. Therefore, the protection unit 14a is connected in parallel to the electronics unit 10a. Also, the protection unit 14a has a third terminal, in particular, a central terminal.
    The protection unit 14a protects the electronics unit 10a in at least one operating state. For this, the protection unit 14a comprises two protection elements 18a, 20a.
    The first protection element 18a of the protection elements 18a, 20a is configured as a voltage-driven connection element. The first protection element 18a is made as a blocking circuit connection element. In the present case, the first protection element 18a is made as a tension-driven triac, in particular, TrisilTM. The first protection element 18a has a breakdown voltage of approximately 400 V, a response time of 1 µs maximum, preferably, 0.5 µs maximum and, particularly advantageously, 0.1 µs as Maximum, and two contacts. However, in principle it is also conceived that the first protection element is made as a gas discharge tube and / or as another connection element, for example, as a thyristor and / or MOSFET, with the corresponding activation.
    The second protection element 20a of the protection elements 18a, 20a is configured as a varistor. In the present case, the second protection element 20a is made as a metal oxide varistor. The second protection element 20a has a threshold voltage that is lower than the maximum supply voltage of the electronics unit 10a. In the present case, the second protection element 20a has a threshold voltage between 200 V and 275 V. The second protection element 20a has two contacts. However, in
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    In principle, it is also conceived that the second protection element is made as a protection element that differs from a varistor, for example, as a connection element with the corresponding activation.
    The first contact of the second protection element 20a is connected with the first terminal of the protection unit 14a and, therefore, with the first power terminal of the power supply unit 34a, in particular with the external conductor and / or with the phase. The second contact of the second protection element 20a is connected with the first contact of the first protection element 18a and with the third terminal of the protection unit 14a. Also, the first contact of the first protection element 18a is connected to the third terminal of the protection unit 14a. The second contact of the first protection element 18a is connected with the second terminal of the protection unit 14a and, therefore, with the second power terminal of the power supply unit 34a, in particular, with the neutral conductor. Therefore, the protection elements 18a, 20a are connected in series.
    To extend the protective effect of the protection unit 14a, the voltage protection circuit 12a further comprises an expansion circuit 16a. The expansion circuit 16a has a first terminal. The first terminal of the expansion circuit 16a is connected to the first power terminal of the power supply unit 34a, in particular, to the neutral conductor and / or to the phase. In addition, the expansion circuit 16a has a second terminal. The second terminal of the expansion circuit 16a is connected to the third terminal of the protection unit 14a. The expansion circuit 16a comprises several passive components. The expansion circuit 16a has no active components. However, in principle it is also conceived that an additional connection element is provided, so that the expansion circuit can be connected to the protection unit and / or separated from it depending on the needs.
    The expansion circuit 16a comprises a first resistor 36a. The first resistor 36a has, by way of example, a resistance value between 47 KΩ and 220 KΩ. In addition, the expansion circuit 16a comprises a second resistor 38a. The second resistor 38a has, by way of example, a resistance value between 100 Ω and 1 KΩ. The first contact of the first resistor 36a is connected with the first terminal of the expansion circuit 16a and, therefore, with the power terminal of the power supply unit 34a, in particular with the external conductor and / or with the phase . The second contact of the first resistor 36a is connected to the first
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    Next, the operating mode of the protection circuit against voltage 12a is described more accurately.
    In a normal operating state, in which the effective value of the supply voltage of the electronics unit 10a is below 275 Vrms and voltage breaks cannot occur, the first resistor 36a and the second resistor 38a form a diversion to the second protection element 20a "low ohm" at least compared to the second protection element 20a. In addition, the energy storage element 22a is discharged and, in particular, shorted. Accordingly, the total supply voltage is applied to the first protection element 18a in the normal operating state.
    In a first malfunction state, in which an overvoltage occurs and the effective value of the supply voltage of the electronics unit 10a is above the sum of the breakdown voltage of the first protection element 18a and of The threshold voltage of the second protection element 20a, the protection unit 14a is put into operation and bypasses the electronics unit 10a. In this case, the second protection element 20a supplies the necessary connection current, in particular, retention current, for the first protection element 18a, in order to keep the first protection element 18a active.
    In another first malfunction state, in which an overvoltage occurs and the effective value of the supply voltage of the electronics unit 10a is below the sum of the breakdown voltage of the first protection element 18a and of the threshold voltage of the second protection element 20a, two cases may occur.
    If the intensity of the current through the second resistor 38a and the first protection element 20a is in this case below the intensity of the interruption current IBO of the first protection element 18a, the first protection element 18a is found then in the inactive state 46a, whereby much of the voltage applied to it falls, while the rest is transformed into heat in the first resistor 36a and in the second resistor 38a.
    If, on the contrary, the intensity of the current through the second resistor 38a and the first protection element 20a is above the intensity of the interruption current IBO of the first protection element 18a, the first protection element 18a it then goes to active state 48a, whereby the first element
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    of protection 18a reduces its resistance, and practically all the voltage drops through the second protection element 20a. In this way, the protection unit 14a is put into operation again and bypasses the electronics unit 10a.
    In a second malfunction state, in which a voltage jump occurs with a rise of at least 100 V / µs and the supply voltage of the electronics unit 10a reaches the breakdown voltage of the first protection element 18a, the first protection element 18a is put into operation directly as a result of the relatively short response time, where the energy storage element 22a is charged through the second resistor 38a and, thus, supplies the necessary connection current, in concrete, retention current, for the first protection element 18a, in order to keep the first protection element 18a active. If the energy storage element 22a is fully charged after a time of approximately 100 µs, then the first protection element 18a is deactivated or remains activated if the supply voltage of the electronics unit 10a has reached the threshold voltage of the second protection element 20a. In the latter case, the second protection element 20a again supplies the necessary connection current, namely, retention current, for the first protection element 18a.
    Alternatively or additionally, it is conceived that a voltage protection circuit is integrated into a construction group of a domestic appliance, such as a voltage actuation stage, a filtering unit, an inverting unit and / or any other unit, so that the efficiency relative to the construction space can be advantageously improved to a greater extent.
    Other embodiments of the invention are shown in Figures 4 and 5. The following descriptions and drawings are essentially limited to the differences between the embodiments, where, in relation to components indicated in the same way, in particular, in terms of components with the same reference symbols, it can also be basically referred to drawings and / or the description of the other embodiments of figures 1 to 3. For the differentiation of the examples of embodiment, the letter "a" is postponed to the reference symbols of the embodiment of figures 1 to 3 and, in the embodiments of figures 4 and 5, the letter "a" is replaced by the letters "b" and "c".
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    权利要求:
    Claims (1)
    [1]
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    同族专利:
    公开号 | 公开日
    ES2633458B1|2018-06-27|
    DE102017203061A1|2017-09-21|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4058696A|1975-06-17|1977-11-15|Tocco-Stel|Induction heating apparatus comprising a static converter|
    WO2015145309A1|2014-03-24|2015-10-01|BSH Hausgeräte GmbH|Cooking appliance device having a self-controlling bypassing unit|
    法律状态:
    2018-06-27| FG2A| Definitive protection|Ref document number: 2633458 Country of ref document: ES Kind code of ref document: B1 Effective date: 20180627 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201630337A|ES2633458B1|2016-03-21|2016-03-21|Home appliance protection device|ES201630337A| ES2633458B1|2016-03-21|2016-03-21|Home appliance protection device|
    DE102017203061.5A| DE102017203061A1|2016-03-21|2017-02-24|Appliances device|
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