WO2019100774A1 - 一种电加热器保护方法、装置及空调 - Google Patents
一种电加热器保护方法、装置及空调 Download PDFInfo
- Publication number
- WO2019100774A1 WO2019100774A1 PCT/CN2018/100952 CN2018100952W WO2019100774A1 WO 2019100774 A1 WO2019100774 A1 WO 2019100774A1 CN 2018100952 W CN2018100952 W CN 2018100952W WO 2019100774 A1 WO2019100774 A1 WO 2019100774A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electric heater
- dry
- temperature
- contactor switch
- time threshold
- Prior art date
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2221/00—Details or features not otherwise provided for
- F24F2221/34—Heater, e.g. gas burner, electric air heater
Definitions
- the present invention relates to the field of circuits, and in particular, to an electric heater protection method and apparatus, and an air conditioner having the same.
- auxiliary electric heating PTC control of the air conditioning unit adopts an open loop control mode.
- the air conditioner cannot judge the state of the electric heating switch.
- the PTC dry burning may cause the temperature of the surrounding material to rise, which may cause overheating deformation of the whole household appliance, and may cause a safety accident such as a fire caused by spontaneous combustion of the sponge material. If you work in dry burn for a long time, there may be PTC accelerated attenuation, insulation failure, and short circuit caused by PTC chip breakdown.
- CN105357780A passes the current detection
- CN102954556B passes the voltage detection
- CN201697275U uses the temperature limiter and the main circuit fuse to judge.
- the circuit needs to detect the current or voltage of the air conditioner PTC, which requires additional circuits and increases the controller cost.
- the manufacturer has no mature high voltage because of the high operating voltage of the air conditioner (above DC450V). Fuse, and the new fuse development cycle is also relatively long.
- the object of the present invention is to provide a low-cost electric heater protection circuit and a protection method to avoid the occurrence of PTC dry burning and enhance the safety of air conditioning use.
- an electric heater protection device comprising: an air outlet temperature collecting unit and a control unit; wherein the air outlet temperature collecting unit is configured to collect the electric heater The air outlet temperature of the air conditioner when operating in the heating mode; the control unit is configured to determine whether the electric heater is dry-fired according to the outlet air temperature, and if the electric heater is dry-burned, control the air conditioner The fan works according to the predetermined state.
- the method further includes: an electric heater temperature alarm unit, wherein the electric heater temperature alarm unit is configured to detect the electric heater temperature, and if the detected electric heater temperature is greater than the electric heater temperature alarm threshold, the electric heater temperature alarm The unit reports a fault; the control unit is further configured to determine whether the electric heater is dry-fired according to whether the air outlet temperature and the electric heater temperature alarm unit report a fault.
- the method further includes: a first contactor switch connected to the first end of the electric heater; and a second contactor switch connected to the second end of the electric heater.
- control unit determines whether the electric heater is dry-burned, including: opening the first contactor switch; turning off the electric heater; determining that the first interval elapsed after the electric heater is turned off is greater than a setting
- the electric heater temperature alarm unit reports a fault, and if so, it is determined that the electric heater is dry, and the first contactor switch is determined to be faulty.
- control unit determines whether the electric heater is dry or not, and further includes: determining whether the electric heater temperature alarm unit reports a fault when the first interval time is greater than the first time threshold, and if the result is no, determining When the second interval time elapsed from determining whether the electric heater temperature alarm unit has reported failure when the first interval time is greater than the first time threshold is greater than a set second time threshold, the exhaust air temperature collecting unit detects Whether the outlet air temperature is greater than a set first temperature threshold, and if so, it is determined that the electric heater is dry and the first contactor switch is faulty.
- control unit determines whether the electric heater is dry or not, and further includes: determining whether the air outlet temperature detected by the air outlet temperature collecting unit is greater than one when the second interval time is greater than the second time threshold The first temperature threshold, if the result is no, perform the following operations: turn off the internal fan; determine that the third interval time that is elapsed since the internal fan is turned off is greater than a set third time threshold, the exhaust air temperature is collected Whether the air temperature detected by the unit is greater than a set second temperature threshold; if yes, it is determined that the electric heater is dry and the first contactor switch is faulty; if not, it is determined that the electric heater is normally turned off, and the first The contactor switch is normal.
- control unit determines whether the electric heater is dry burned, and further includes: if it is determined that the electric heater is dry and the first contactor switch is faulty, further performing the following operation: disconnecting the second contactor a switch; determining whether an air outlet temperature detected by the air outlet temperature collecting unit is greater than a set third when a fourth interval time elapsed since the second contactor switch is turned off is greater than a set fourth time threshold Temperature threshold; if yes, it is determined that the electric heater is dry, and the first contactor switch and the second contactor switch are faulty; if not, it is judged that the electric heater is dry, the first contactor switch is faulty, and the second contact The switch is normal.
- control unit determines whether the electric heater is dry or not, and further includes: if the electric heater is dry, the first and second contactor switches are faulty, and the control unit controls the inner fan to be in the first state during standby State; and/or, if the electric heater is dry, the first contactor switch is faulty, the second contactor switch is normal, the control unit controls the inner fan to be in the second state during standby; and/or if the electric heater is normal When the first contactor switch is turned off and the first contactor switch is normal, the control unit controls the internal fan to be in the third state during standby.
- the inner fan is turned on according to the middle wind; and/or the inner fan is turned off in the second state; and/or the inner fan is turned off in the third state.
- the electric heater temperature alarm threshold ranges from 150 to 250 °C.
- first time threshold ranges from 1 to 10 minutes; and/or the second time threshold ranges from 1 to 10 minutes; and/or the third time threshold ranges from 1 to 10 minutes; and/or, the fourth time threshold ranges from 5 to 10 minutes; and/or, the first temperature threshold ranges from 50 to 70 ° C; and/or the value of the second time threshold
- the range is 50-70 ° C; and / or, the third time threshold ranges from 50-70 ° C.
- fault prompting unit is further configured to issue a prompt under the control of the control unit when the control unit determines that the electric heater is dry.
- the fault prompting unit is selected from one or more of a display unit, a speaker, and an indicator light, and issues a prompt in the form of text, image, voice, buzzer, and/or flashing light.
- a method of protecting an electric heater comprising: collecting an air outlet temperature of an air conditioner to which the electric heater belongs in a heating mode; The temperature determines whether the electric heater is dry-fired, and if the electric heater is dry-fired, the inner fan that controls the air conditioner operates according to a predetermined state.
- the method further includes the steps of: detecting the electric heater temperature, and if the detected electric heater temperature is greater than the electric heater temperature alarm threshold, using an electric heater temperature alarm unit to report a fault; according to the outlet air temperature and electric heating Whether the temperature alarm unit reports a fault determines whether the electric heater has dry burned.
- the method further includes the steps of: connecting the first contactor switch to the first end of the electric heater; and connecting the second contactor switch to the second end of the electric heater.
- the determining whether the electric heater is dry or not is specifically: disconnecting the first contactor switch; turning off the electric heater; determining that the first interval time elapsed since the electric heater is turned off is greater than a set At the first time threshold, the electric heater temperature alarm unit reports a fault, and if so, it is determined that the electric heater is dry, and the first contactor switch is determined to be faulty.
- the determining whether the electric heater is dry or not further comprises the steps of: determining whether the electric heater temperature alarm unit reports a fault when the first interval time is greater than the first time threshold, and if the result is no, Determining whether the exit air temperature is greater than a setting when determining that the second interval time elapsed after the electric heater temperature alarm unit reports the fault is greater than a set second time threshold when the first interval time is greater than the first time threshold The first temperature threshold, if so, determines that the electric heater is dry and the first contactor switch is faulty.
- the determining whether the electric heater is dry or not further comprises the following steps: determining whether the air outlet temperature is greater than a first temperature threshold when the second interval time is greater than the second time threshold, if the result is No, the following operation is performed: closing the internal fan; determining whether the exit air temperature is greater than a set second temperature threshold when the third interval time elapsed since the closing of the inner fan is greater than a set third time threshold; If yes, it is judged that the electric heater is dry and the first contactor switch is faulty; if not, it is judged that the electric heater is normally turned off, and the first contactor switch is normal.
- the determining whether the electric heater is dry or not further comprises the following steps: if it is determined that the electric heater is dry and the first contactor switch is faulty, further performing the following operation: disconnecting the second contact And determining whether the exit air temperature is greater than a set third temperature threshold when the fourth interval time elapsed since the second contactor switch is turned off is greater than a set fourth time threshold; if yes, the determination occurs The electric heater is dry and the first contactor switch and the second contactor switch are faulty; if not, it is judged that the electric heater is dry, the first contactor switch is faulty, and the second contactor switch is normal.
- the determining whether the electric heater is dry or not further comprises: if the electric heater is dry, the first and second contactor switches are faulty, and the control inner fan is in the first state when in standby; and Or, if the electric heater is dry, the first contactor switch is faulty, the second contactor switch is normal, the control inner fan is in the second state during standby; and/or, if the electric heater is normally closed, and the first contact The switch is normal, and the control internal fan is in the third state during standby.
- the inner fan is turned on according to the middle wind; and/or the inner fan is turned off in the second state; and/or the inner fan is turned off in the third state.
- the electric heater temperature alarm threshold ranges from 150 to 250 °C.
- first time threshold ranges from 1 to 10 minutes; and/or the second time threshold ranges from 1 to 10 minutes; and/or the third time threshold ranges from 1 to 10 minutes; and/or, the fourth time threshold ranges from 5 to 10 minutes; and/or, the first temperature threshold ranges from 50 to 70 ° C; and/or the value of the second time threshold
- the range is 50-70 ° C; and / or, the third time threshold ranges from 50-70 ° C.
- the fault prompting unit is selected from one or more of a display unit, a speaker, and an indicator light, and issues a prompt in the form of text, image, voice, buzzer, and/or flashing light.
- an air conditioner comprising: an electric heater; an inner fan; an electric heater protection device, wherein the electric heater protection device is the aforementioned electric heater protection device.
- a computer readable storage medium having stored thereon a computer program, the program being implemented by a processor to implement the steps of the foregoing method.
- an air conditioner comprising: a processor, a memory, and a computer program stored on the memory and operable on the processor, the processor implementing the program to implement the foregoing method step.
- the invention determines whether the PTC is dry, determines whether the PTC contactor is stuck, and avoids the PTC dry burning by the internal fan control, thereby improving the reliability of the PTC, effectively avoiding the PTC dry burning situation, and enhancing the air conditioning use.
- Safety also effectively reduces the cost of anti-PTC dry burning control.
- 1 is an electric heater protection circuit in accordance with an embodiment of the present invention.
- FIG. 2 is a flow chart of a method of protecting an electric heater in accordance with an embodiment of the present invention.
- reference numeral 1 is a contactor switch A
- 2 is a contactor switch B
- 3 is an electric heater PTC1
- 4 is an electric heater PTC2
- 5 is a temperature limiter L1
- 6 is a temperature limiter L2
- 7 is The outlet air temperature T1,8 is the outlet air temperature T2.
- This embodiment provides a PTC electric heater anti-dry protection circuit.
- the protection circuit is used in heating household appliances (such as air conditioners, heaters, etc.), and can timely determine whether the PTC electric heater in the household appliance has dry burn, and protect the PTC electric heater that has a dry burn fault.
- the anti-dry protection circuit includes two electric heaters PTC1 and PTC2 connected in parallel, a contactor switch A, and a first end of the electric heaters PTC1 and PTC2, a contactor switch B, and an electric device.
- the second ends of the heaters PTC1 and PTC2 are connected.
- a thermostat L1 is mounted on the electric heater PTC1
- a thermostat L2 is mounted on the surface of the PTC2 for sensing the temperature T3 of the electric heater PTC1 for sensing electric heating.
- the temperature T4 of the PTC 2 the temperature limiters L1, L2 and the sensed temperatures T3, T4 are sent to a control unit (not shown in Fig. 1), such as an MCU of an air conditioner.
- the temperature limiter reports a fault.
- an outlet air temperature sensor ie, an outlet temperature sensor
- the control unit comprehensively determines the electric heating according to the fault report information sent by the air outlet temperature T1, T2, the temperature limiter L1, and the temperature limiter L2.
- the anti-dry protection circuit may further include a fault prompting unit to make a humidity sensor fault alarm reminder.
- the alarm prompt may be on a display (the display here may be a heating home appliance, such as a display unit on an air conditioner host, a display unit on a remote controller, or a display on a PTC anti-dry protection control device) Display dry burn fault information (such as corresponding fault code), and / or control the corresponding fault prompt unit to issue an alarm (for example, the buzzer beeps, the flashing light flashes) and other sounds, text, images, LEDs
- the mode will feedback the dry burning fault to the user in time, so that the user can repair in time to improve the safety and reliability of the product.
- FIG. 2 is a PTC electric heater anti-dry protection method according to an embodiment of the present invention. Taking a household air conditioner as an example, the method includes the following steps:
- the choice of disconnecting the contactor switch A or B in this step is no different from the method itself, except that the order in which the two contactor switches are stuck is different. If you choose to disconnect contactor switch A this time, disconnect contactor switch B after receiving the electric heater off command next time. In this embodiment, the contactor switch A is selected to be disconnected first.
- Step S203 setting a time elapsed from the turning off of the electric heaters PTC1 and PTC2 to Time1, determining whether the temperature limiter L1, and/or the temperature limiter L2 reports a failure when Time1 is greater than a first time threshold n1, and if so, executing Step S204.
- the temperature limiter reports PTC malfunction.
- control unit determines, according to the above information, that the electric heater PTC1 and/or PTC2 is abnormally closed, and the contactor switch A is stuck.
- the contactor switch B is further turned off, and then step S205 is performed.
- step S205 setting a time elapsed from the disconnection of the contactor switch B to Time4, determining whether the exit air temperature T1, and/or the exit air temperature T2 is greater than a third temperature threshold c when Time4 is greater than a fourth time threshold n4, if If yes, go to step S206, if no, go to step S207.
- the control unit further performs anti-dry protection to control the inner fan to be in the first state during standby. In the first state, the inner fan is opened according to the middle wind speed.
- the control unit controls the inner fan to be in the second state during standby. In the second state, the inner fan does not need to be turned on when it is in standby.
- step S203 it is determined whether Time1 is greater than a first time threshold n1, and whether the temperature limiter L1, and/or the temperature limiter L2 reports a failure, and if not, step S208 is performed.
- step S208 when it is determined that Time1 is greater than a first time threshold n1, whether the temperature limiter L1, and/or the temperature limiter L2 reports a fault as a starting point, the elapsed time is Time2, and the Time2 is greater than a second time.
- the threshold value n2 the outlet air temperature T1, and / or the outlet air temperature T2 is greater than the first temperature threshold a, if yes, step S204 is performed, if not, step S209 is performed;
- the air conditioner unit is controlled to enter a standby state, and the control unit controls the inner fan to be in a third state during standby. In the third state, the inner fan does not need to be turned on when it is in standby.
- step S210 setting a time elapsed from the time when the air conditioning unit enters the shutdown standby state in step S209 is Time3, and determining whether the air outlet temperature T1 and/or the outlet air temperature T2 is greater than a second temperature threshold when Time3 is greater than a third time threshold n3. b, if yes, go to step S204, if no, go to step S211.
- the protection circuit detects the PTC air outlet temperature through the temperature limiter and the system temperature sensing package to determine whether the PTC is dry and the contactor switch is stuck. If it is determined that the PTC is dry, the control circuit controls the air blow by the internal fan. Reduce the PTC dry burning temperature, avoid accidents, and remind the user to repair the equipment through the fault prompt.
- the first time threshold n1 in the embodiment ranges from 1 to 10 minutes
- the second time threshold n2 ranges from 1 to 10 minutes
- the third time threshold n3 ranges from 1 to 10.
- the value of the fourth time threshold a4 ranges from 5 to 10 minutes
- the value of the first temperature threshold a ranges from 50 to 70 ° C
- the second time threshold b ranges from 50 to 70 ° C.
- the three-time threshold c ranges from 50 to 70 °C.
- the temperature limiter threshold ranges from 150 to 250 °C.
- the invention can detect the dry burning fault in time, avoid the abnormal high temperature caused by dry burning and the PTC overheating breakdown short circuit problem, and feed back the fault to the user, thereby improving the reliability of the PTC and effectively avoiding the PTC dry burning situation. To enhance the safety of air conditioning use.
- the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
- the technical solution of the present invention which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk,
- the optical disc includes a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Direct Air Heating By Heater Or Combustion Gas (AREA)
- Air-Conditioning For Vehicles (AREA)
- Air Conditioning Control Device (AREA)
Abstract
一种电加热器保护方法、装置及空调，该装置包括出风温度采集单元和控制单元，出风温度采集单元采集电加热器（3,4）所属空调在制热模式运行时的出风温度，控制单元根据出风温度确定电加热器（3,4）是否发生干烧，若发生干烧，则控制空调的内风机按预定状态工作。
Description
本申请要求于2017年11月23日提交中国专利局、申请号为201711221573.7、发明名称为“一种电加热器保护方法、装置及空调”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
本发明涉及电路领域，尤其涉及一种电加热器保护方法、装置及具有该电加热器保护装置的空调。
目前，空调、加湿器、电暖器等家用电器一般使用带辅助制热功能的电加热器进行制热，一般情况下，空调机组的辅助电加热PTC控制采用开环控制方式。但是当出现异常情况时，空调无法判断电加热开关状态，PTC干烧易导致周围材料温度升高，可能导致家用电器整机过热变形，严重时会导致如海绵材料自燃引起火灾等安全事故。如长期在干烧情况下工作，还可能出现PTC加速衰减、绝缘失效、以及PTC片击穿产生的短路现象。
对于采用辅助电加热防干烧的控制方法有多种思路，如CN105357780A通过电流检测，CN102954556B通过电压检测，CN201697275U则通过限温器和主回路熔断器共同作用来判断。但通过电路来检测空调PTC的电流或电压需要额外的电路，增加控制器成本；而对于设置在电动大巴上的空调设备，由于空调工作电压高(DC450V以上)，厂家目前还没有成熟的高电压熔断器，且新熔断器开发周期也比较长。
发明内容
有鉴于此，本发明的目的是提供一种低成本的电加热器保护电路及保护方法，来避免出现PTC干烧情况，增强空调使用安全性。
根据本发明的第一方面，提供一种电加热器保护装置，其特征在于，包括：出风温度采集单元和控制单元；其中，所述出风温度采集单元用于采集所述电加热器所属空调在制热模式运行时的出风温度；所述控制单元用于根据所述出风温度确定所述电加热器是否发生干烧，若发生电加热器干烧，则控制所述空调的内风机按照预定状态工作。
进一步的，还包括：电加热器温度报警单元，所述电加热器温度报警单元用于检测电加热器温度，如果检测到的电加热器温度大于电加热器温度报警阈值，电加热器温度报警单元报故障；所述控制单元，进一步用于根据所述出风温度和电加热器温度报警单元是否报故障确定所述电加热器是否发生干烧。
进一步的，还包括：第一接触器开关，与电加热器的第一端连接；第二接触器开关，与电加热器的第二端连接。
进一步的，所述控制单元确定所述电加热器是否发生干烧，包括：断开第一接触器开关；关闭电加热器；判断从关闭电加热器开始经过的第一间隔时间大于一设定的第一时间阈值时，电加热器温度报警单元是否报故障，如果是，判断发生电加热器干烧，且确定所述第一接触器开关故障。
进一步的，所述控制单元确定所述电加热器是否发生干烧，还包括：所述判断第一间隔时间大于第一时间阈值时电加热器温度报警单元是否报故障，如果结果为否，判断当从判断当第一间隔时间大于第一时间阈值时电加热器温度报警单元是否报故障开始经过的第二间隔时间大于一设定的第二时间阈值时，所述出风温度采集单元检测的出风温度是否大于一设定的第一温度阈值，如果是，则判断发生电加热器干烧，且第一接触器开关故障。
进一步的，所述控制单元确定所述电加热器是否发生干烧，还包括：所述判断当第二间隔时间大于第二时间阈值时所述出风温度采集单元检测的出风温度是否大于一第一温度阈值，如果结果为否，执行下述操作：关闭内风机；判断当自关闭内风机起开始经过的第三间隔时间大于一设定的第三时间阈值时，所述出风温度采集单元检测的出风温度是否大于一设定的第二温度阈值；如果是，判断发生电加热器干烧，且第一接触器开关故障；如果否，判断发生电加热器正常关闭，且第一接触器开关正常。
进一步的，所述控制单元确定所述电加热器是否发生干烧，还包括：如果判断发生电加热器干烧，且第一接触器开关故障，进一步执行下述操作：断开第二接触器开关；判断当从断开第二接触器开关开始经过的第四间隔时间大于一设定的第四时间阈值时，所述出风温度采集单元检测的出风温度是否大于一设定的第三温度阈值；如果是，判断发生电加热器干烧，且第一接触器开关、第二接触器开关故障；如果否，判断发生电加热器干烧，第一接触器开关故障，且第二接触器开关正常。
进一步的，所述控制单元确定所述电加热器是否发生干烧，还包括：如果发生电加热器干烧，第一、第二接触器开关故障，控制单元控制内风机在待机时处于第一状态；和/或，如果发生电加热器干烧，第一接触器开关故障，第二接触器开关正常，控制单元控制内风机在待机时处于第二状态；和/或，如果电加热器正常关闭，且第一接触器开关正常，控制单元控制内风机在待机时处于第三状态。
进一步的，所述第一状态时内风机按照中风档开启；和/或，所述第二状态时内风机关闭；和/或，所述第三状态时内风机关闭。
进一步的，电加热器温度报警阈值的取值范围为150-250℃。
进一步的，第一时间阈值的取值范围为1到10分钟；和/或，第二时间阈值的取值范围为1到10分钟；和/或，第三时间阈值的取值范围为1到10分钟；和/或，第四时间阈值的取值范围为5到10分钟；和/或，第一温度阈值的取值范围为50-70℃；和/或，第二时间阈值的取值范围为50-70℃；和/或，第三时间阈值的取值范围为50-70℃。
进一步的，还包括故障提示单元，用于当控制单元判断发生电加热器干烧时，在控制单元的控制下发出提示。
进一步的，所述故障提示单元选自显示单元、扬声器、指示灯中的一种或多种，通过文字、图像、语音、蜂鸣、和/或闪烁灯的形式发出提示。
根据本发明的第二方面，提供一种电加热器保护方法，其特征在于，包括下述步骤：采集所述电加热器所属空调在制热模式运行时的出风温度；根据所述出风温度确定所述电加热器是否发生干烧，若发生电加热器干烧，则控制所述空调的内风机按照预定状态工作。
进一步的，还包括下述步骤：检测电加热器温度，如果检测到的电加 热器温度大于电加热器温度报警阈值，使用电加热器温度报警单元报故障；根据所述出风温度和电加热器温度报警单元是否报故障确定所述电加热器是否发生干烧。
进一步的，还包括下述步骤：将第一接触器开关与电加热器的第一端连接；将第二接触器开关与电加热器的第二端连接。
进一步的，所述确定所述电加热器是否发生干烧，具体为：断开第一接触器开关；关闭电加热器；判断从关闭电加热器开始经过的第一间隔时间大于一设定的第一时间阈值时，电加热器温度报警单元是否报故障，如果是，判断发生电加热器干烧，且确定所述第一接触器开关故障。
进一步的，所述确定所述电加热器是否发生干烧，还包括下述步骤：所述判断第一间隔时间大于第一时间阈值时电加热器温度报警单元是否报故障，如果结果为否，判断当从判断当第一间隔时间大于第一时间阈值时电加热器温度报警单元是否报故障开始经过的第二间隔时间大于一设定的第二时间阈值时，出风温度是否大于一设定的第一温度阈值，如果是，则判断发生电加热器干烧，且第一接触器开关故障。
进一步的，所述确定所述电加热器是否发生干烧，还包括下述步骤：所述判断当第二间隔时间大于第二时间阈值时出风温度是否大于一第一温度阈值，如果结果为否，执行下述操作：关闭内风机；判断当自关闭内风机起开始经过的第三间隔时间大于一设定的第三时间阈值时，出风温度是否大于一设定的第二温度阈值；如果是，判断发生电加热器干烧，且第一接触器开关故障；如果否，判断发生电加热器正常关闭，且第一接触器开关正常。
进一步的，所述确定所述电加热器是否发生干烧，还包括下述步骤：如果判断发生电加热器干烧，且第一接触器开关故障，进一步执行下述操作：断开第二接触器开关；判断当从断开第二接触器开关开始经过的第四间隔时间大于一设定的第四时间阈值时，出风温度是否大于一设定的第三温度阈值；如果是，判断发生电加热器干烧，且第一接触器开关、第二接触器开关故障；如果否，判断发生电加热器干烧，第一接触器开关故障，且第二接触器开关正常。
进一步的，所述确定所述电加热器是否发生干烧，还包括：如果发生 电加热器干烧，第一、第二接触器开关故障，控制内风机在待机时处于第一状态；和/或，如果发生电加热器干烧，第一接触器开关故障，第二接触器开关正常，控制内风机在待机时处于第二状态；和/或，如果电加热器正常关闭，且第一接触器开关正常，控制内风机在待机时处于第三状态。
进一步的，所述第一状态时内风机按照中风档开启；和/或，所述第二状态时内风机关闭；和/或，所述第三状态时内风机关闭。
进一步的，电加热器温度报警阈值的取值范围为150-250℃。
进一步的，第一时间阈值的取值范围为1到10分钟；和/或，第二时间阈值的取值范围为1到10分钟；和/或，第三时间阈值的取值范围为1到10分钟；和/或，第四时间阈值的取值范围为5到10分钟；和/或，第一温度阈值的取值范围为50-70℃；和/或，第二时间阈值的取值范围为50-70℃；和/或，第三时间阈值的取值范围为50-70℃。
进一步的，当发生电加热器干烧时，由故障提示单元发出提示。
进一步的，所述故障提示单元选自显示单元、扬声器、指示灯中的一种或多种，通过文字、图像、语音、蜂鸣、和/或闪烁灯的形式发出提示。
根据本发明的第三方面，提供一种空调，包括：电加热器；内风机；电加热器保护装置，所述电加热器保护装置为前述的电加热器保护装置。
根据本发明的第四方面，提供一种计算机可读存储介质，其特征在于，其上存储有计算机程序，所述程序被处理器执行时实现前述方法的步骤。
根据本发明的第五方面，提供一种空调，其特征在于，包括处理器、存储器以及存储在存储器上可在处理器上运行的计算机程序，所述处理器执行所述程序时实现前述方法的步骤。
本发明通过上述方案，判断PTC是否干烧、判断PTC的接触器是否粘连，并通过内风机控制来避免PTC干烧，一方面提高了PTC可靠性，有效避免出现PTC干烧情况，增强空调使用安全性，另一方面也有效降低了防PTC干烧控制成本。
上述说明仅是本发明技术方案的概述，为了能够更清楚了解本发明的技术手段，并可依照说明书的内容予以实施，以下以本发明的较佳实施例并配合附图详细说明如后。
构成本发明的一部分的附图用来提供对本发明的进一步理解，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：
图1是根据本发明实施例的电加热器保护电路。
图2是根据本发明实施例的电加热器保护方法的流程图。
为使本发明的目的、技术方案和优点更加清楚，下面将结合本发明具体实施例及相应的附图对本发明技术方案进行清楚、完整地描述。显然，所描述的实施例仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
图1是根据本发明的电加热器保护电路。图中，附图标记1为接触器开关A，2为接触器开关B，3为电加热器PTC1，4为电加热器PTC2，5为限温器L1，6为限温器L2，7为出风温度T1，8为出风温度T2。
本实施例提供一种PTC电加热器防干烧保护电路。该保护电路用于制暖的家用电器(如空调、暖风机等)中，能及时判断该家用电器中的PTC电加热器是否存在干烧，以及时保护出现干烧故障的PTC电加热器。
如图1所示，所述防干烧保护电路包括并联的两个电加热器PTC1、PTC2，接触器开关A，与电加热器PTC1、PTC2的第一端连接，接触器开关B，与电加热器PTC1、PTC2的第二端连接。在电加热器PTC1安装有限温器L1、在PTC2表面安装有限温器L2，所述限温器L1用于感测电加热器PTC1的温度T3，所述限温器L2用于感测电加热器PTC2的温度T4，限温器L1、L2并将感测到的温度T3、T4发送给控制单元(图1未示出)，例如空调的MCU。如果发现电加热器PTC1、和/或电加热器PTC2的温度，即T3和/或T4超过了预定阈值，则限温器报故障。在电加热器PTC1和电加热器PTC2附近， 还分别设置有出风温度传感器(即出风感温包)用于检测位于电加热器PTC1、PTC2的出风温度T1、T2，所述出风温度传感器各自将检测到的出风温度T1、T2传送给控制单元，由控制单元根据上述出风温度T1、T2、所述限温器L1、限温器L2发送的故障报告信息综合判断电加热器PTC1、PTC2是否异常关闭、以及接触器开关A、B是否粘连。所述防干烧保护电路还可包括故障提示单元，做出湿度传感器故障报警提醒。所述报警提示可以是在显示器(在此的显示器可以是制暖家用电器，例如空调主机上的显示单元、遥控器上的显示单元、也可以是PTC防干烧保护控制装置上的显示器)上显示干烧故障信息(如相应的故障代码)，和/或控制相应的故障提示单元发出警报(如，蜂鸣器发出蜂鸣声，闪烁灯发出闪烁)等各种声音、文字、图像、LED模式，以及时将干烧故障反馈给用户，使用户及时维修，提高产品的安全性和可靠性。
图2是根据本发明实施例的PTC电加热器防干烧保护方法，以家用空调为例，该方法包括下述步骤：
S201，执行PTC关闭指令，断开接触器开关A、B中的一个接触器开关。
此步骤中断开接触器开关A或B的选择对该方法本身并无区别，只是判断两个接触器开关是否粘连的顺序不同。如果本次选择先断开接触器开关A，下次接收电加热器关闭指令后先断开接触器开关B即可。本实施例中，选择先断开接触器开关A。
S202，制热关机。
制热关机后，开始判断电加热器PTC1、PTC2是否存在干烧，接触器开关A、B是否粘连，并根据判断结果控制内风机来避免PTC干烧。具体为：
S203，设置从关闭电加热器PTC1、PTC2开始经过的时间为Time1，判断当Time1大于一第一时间阈值n1时，限温器L1、和/或限温器L2是否报故障，如果是，执行步骤S204。其中，当所述限温器L1、和/或限温器L2检测到的电加热器PTC1、和/或电加热器PTC2的温度超过了预定的限温器阈值时，则限温器报告PTC故障。
S204，控制单元根据上述信息，判断电加热器PTC1和/或PTC2异常关 闭，接触器开关A粘连。进一步断开接触器开关B，接着执行步骤S205。
S205，设置从断开接触器开关B开始经过的时间为Time4，判断Time4大于一第四时间阈值n4时，出风温度T1、和/或出风温度T2是否大于一第三温度阈值c，如果是，执行步骤S206，如果否，执行步骤S207。
S206，判断电加热器PTC1、和/或电加热器PTC2异常关闭，接触器开关A、B均粘连。控制单元进一步执行防干烧保护，控制内风机在待机时处于第一状态。所述第一状态时内风机按照中风档开启。
S207，判断电加热器PTC1、和/或电加热器PTC2异常关闭，接触器开关A粘连，接触器开关B状态正常。此时控制单元控制内风机在待机时处于第二状态。所述第二状态时内风机待机时无需开启。
上述实施例是基于限温器L1、L2正常工作的前提下进行的，如果限温器L1、L2发生故障失效，上述判断过程容易出现漏判，同样存在安全隐患，因此，在上述实施例的基础上，进一步的提出本发明的一更优实施例：
在步骤S203中，判断Time1大于一第一时间阈值n1时，且限温器L1、和/或限温器L2是否报故障，如果否，执行步骤S208。
S208，设置从判断Time1大于一第一时间阈值n1时，限温器L1、和/或限温器L2是否报故障的时间点作为起点，开始经过的时间为Time2，判断Time2大于一第二时间阈值n2时，出风温度T1、和/或出风温度T2是否大于第一温度阈值a，如果是，执行步骤S204，如果否，执行步骤S209；
S209，控制空调机组进入停机待机状态，控制单元控制内风机在待机时处于第三状态。所述第三状态时内风机待机时无需开启。
S210，设置自步骤S209空调机组进入停机待机状态起开始经过的时间为Time3，判断Time3大于一第三时间阈值n3时，出风温度T1、和/或出风温度T2是否大于一第二温度阈值b，如果是，执行步骤S204，如果否，执行步骤S211。
S211，判断电加热器PTC1/PTC2正常关闭，接触器开关A正常。进一步断开接触器开关B，控制内风机在待机时处于第四状态。所述第四状态时内风机待机时无需开启。
由此，保护电路通过限温器、结合***感温包检测PTC出风侧温度来判断PTC是否干烧以及接触器开关是否粘连，如果判断为PTC干烧，控制电路通过控制内风机送风来降低PTC干烧温度，避免出现事故，并通过故障提示提醒用户检修设备。
较佳的，本实施例中的第一时间阈值n1的取值范围为1到10分钟，第二时间阈值n2的取值范围为1到10分钟，第三时间阈值n3的取值范围为1到10分钟，第四时间阈值n4的取值范围为5到10分钟，第一温度阈值a的取值范围为50-70℃，第二时间阈值b的取值范围为50-70℃，第三时间阈值c的取值范围为50-70℃。限温器阈值的取值范围为150-250℃。
本发明通过上述方案，能够及时检测干烧故障，避免干烧导致的异常高温和PTC过热击穿短路问题，同时将故障反馈给用户，一方面提高了PTC可靠性，有效避免出现PTC干烧情况，增强空调使用安全性。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本发明各个实施例所述的方法。
需要说明的是，在不冲突的情况下，本发明中的实施例及实施例中的特征可以相互组合。
以上所述，仅是本发明的较佳实施例而已，并非对本发明作任何形式上的限制，依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍属于本发明技术方案的范围内。
Claims (29)
- 一种电加热器保护装置，其特征在于，包括：出风温度采集单元和控制单元；其中，所述出风温度采集单元用于采集所述电加热器所属空调在制热模式运行时的出风温度；所述控制单元用于根据所述出风温度确定所述电加热器是否发生干烧，若发生电加热器干烧，则控制所述空调的内风机按照预定状态工作。
- 如权利要求1所述的装置，还包括：电加热器温度报警单元，所述电加热器温度报警单元用于检测电加热器温度，如果检测到的电加热器温度大于电加热器温度报警阈值，电加热器温度报警单元报故障；所述控制单元，进一步用于根据所述出风温度和电加热器温度报警单元是否报故障确定所述电加热器是否发生干烧。
- 如权利要求1或2所述的装置，还包括：第一接触器开关，与电加热器的第一端连接；第二接触器开关，与电加热器的第二端连接。
- 如权利要求3所述的装置，所述控制单元确定所述电加热器是否发生干烧，包括：断开第一接触器开关；关闭电加热器；判断从关闭电加热器开始经过的第一间隔时间大于一设定的第一时间阈值时，电加热器温度报警单元是否报故障，如果是，判断发生电加热器干烧，且确定所述第一接触器开关故障。
- 如权利要求4所述的装置，所述控制单元确定所述电加热器是否发生干烧，还包括：所述判断第一间隔时间大于第一时间阈值时电加热器温度报警单元是否报故障，如果结果为否，判断当从判断当第一间隔时间大于第一时间阈值时电加热器温度报警单元是否报故障开始经过的第二间隔时间大于一设定的第二时间阈值时，所述出风温度采集单元检测的出风温度是否大于一 设定的第一温度阈值，如果是，则判断发生电加热器干烧，且第一接触器开关故障。
- 如权利要求5所述的装置，所述控制单元确定所述电加热器是否发生干烧，还包括：所述判断当第二间隔时间大于第二时间阈值时所述出风温度采集单元检测的出风温度是否大于一第一温度阈值，如果结果为否，执行下述操作：关闭内风机；判断当自关闭内风机起开始经过的第三间隔时间大于一设定的第三时间阈值时，所述出风温度采集单元检测的出风温度是否大于一设定的第二温度阈值；如果是，判断发生电加热器干烧，且第一接触器开关故障；如果否，判断发生电加热器正常关闭，且第一接触器开关正常。
- 如权利要求4-6任一项所述的装置，所述控制单元确定所述电加热器是否发生干烧，还包括：如果判断发生电加热器干烧，且第一接触器开关故障，进一步执行下述操作：断开第二接触器开关；判断当从断开第二接触器开关开始经过的第四间隔时间大于一设定的第四时间阈值时，所述出风温度采集单元检测的出风温度是否大于一设定的第三温度阈值；如果是，判断发生电加热器干烧，且第一接触器开关、第二接触器开关故障；如果否，判断发生电加热器干烧，第一接触器开关故障，且第二接触器开关正常。
- 如权利要求3-7任一项所述的装置，所述控制单元确定所述电加热器是否发生干烧，还包括：如果发生电加热器干烧，第一、第二接触器开关故障，控制单元控制内风机在待机时处于第一状态；和/或，如果发生电加热器干烧，第一接触器开关故障，第二接触器开关正常，控制单元控制内风机在待机时处于第二状态；和/或，如果电加热器正常关闭，且第一接触器开关正常，控制单元控 制内风机在待机时处于第三状态。
- 如权利要求8所述的装置，其中，所述第一状态时内风机按照中风档开启；和/或，所述第二状态时内风机关闭；和/或，所述第三状态时内风机关闭。
- 如权利要求2-9任一项所述的装置，电加热器温度报警阈值的取值范围为150-250℃。
- 如权利要求4-10任一项所述的装置，其中，第一时间阈值的取值范围为1到10分钟；和/或，第二时间阈值的取值范围为1到10分钟；和/或，第三时间阈值的取值范围为1到10分钟；和/或，第四时间阈值的取值范围为5到10分钟；和/或，第一温度阈值的取值范围为50-70℃；和/或，第二时间阈值的取值范围为50-70℃；和/或，第三时间阈值的取值范围为50-70℃。
- 如权利要求1-11任一项所述的装置，还包括故障提示单元，用于当控制单元判断发生电加热器干烧时，在控制单元的控制下发出提示。
- 如权利要求12所述的装置，所述故障提示单元选自显示单元、扬声器、指示灯中的一种或多种，通过文字、图像、语音、蜂鸣、和/或闪烁灯的形式发出提示。
- 一种电加热器保护方法，其特征在于，包括下述步骤：采集所述电加热器所属空调在制热模式运行时的出风温度；根据所述出风温度确定所述电加热器是否发生干烧，若发生电加热器干烧，则控制所述空调的内风机按照预定状态工作。
- 如权利要求14所述的方法，还包括下述步骤：检测电加热器温度，如果检测到的电加热器温度大于电加热器温度报警阈值，使用电加热器温度报警单元报故障；根据所述出风温度和电加热器温度报警单元是否报故障确定所述电加热器是否发生干烧。
- 如权利要求14或15所述的方法，还包括下述步骤：将第一接触器开关与电加热器的第一端连接；将第二接触器开关与电加热器的第二端连接。
- 如权利要求16所述的方法，所述确定所述电加热器是否发生干烧，具体为：断开第一接触器开关；关闭电加热器；判断从关闭电加热器开始经过的第一间隔时间大于一设定的第一时间阈值时，电加热器温度报警单元是否报故障，如果是，判断发生电加热器干烧，且确定所述第一接触器开关故障。
- 如权利要求17所述的方法，所述确定所述电加热器是否发生干烧，还包括下述步骤：所述判断第一间隔时间大于第一时间阈值时电加热器温度报警单元是否报故障，如果结果为否，判断当从判断当第一间隔时间大于第一时间阈值时电加热器温度报警单元是否报故障开始经过的第二间隔时间大于一设定的第二时间阈值时，出风温度是否大于一设定的第一温度阈值，如果是，则判断发生电加热器干烧，且第一接触器开关故障。
- 如权利要求18所述的方法，所述确定所述电加热器是否发生干烧，还包括下述步骤：所述判断当第二间隔时间大于第二时间阈值时出风温度是否大于一第一温度阈值，如果结果为否，执行下述操作：关闭内风机；判断当自关闭内风机起开始经过的第三间隔时间大于一设定的第三时间阈值时，出风温度是否大于一设定的第二温度阈值；如果是，判断发生电加热器干烧，且第一接触器开关故障；如果否，判断发生电加热器正常关闭，且第一接触器开关正常。
- 如权利要求17-19任一项所述的方法，所述确定所述电加热器是否发生干烧，还包括下述步骤：如果判断发生电加热器干烧，且第一接触器开关故障，进一步执行下述操作：断开第二接触器开关；判断当从断开第二接触器开关开始经过的第四间隔时间大于一设定的第四时间阈值时，出风温度是否大于一设定的第三温度阈值；如果是，判断发生电加热器干烧，且第一接触器开关、第二接触器开关故障；如果否，判断发生电加热器干烧，第一接触器开关故障，且第二接触器开关正常。
- 如权利要求16-20任一项所述的方法，所述确定所述电加热器是否发生干烧，还包括：如果发生电加热器干烧，第一、第二接触器开关故障，控制内风机在待机时处于第一状态；和/或，如果发生电加热器干烧，第一接触器开关故障，第二接触器开关正常，控制内风机在待机时处于第二状态；和/或，如果电加热器正常关闭，且第一接触器开关正常，控制内风机在待机时处于第三状态。
- 如权利要求21所述的方法，其中，所述第一状态时内风机按照中风档开启；和/或，所述第二状态时内风机关闭；和/或，所述第三状态时内风机关闭。
- 如权利要求15-22任一项所述的方法，电加热器温度报警阈值的取值范围为150-250℃。
- 如权利要求17-23任一项所述的方法，其中，第一时间阈值的取值范围为1到10分钟；和/或，第二时间阈值的取值范围为1到10分钟；和/或，第三时间阈值的取值范围为1到10分钟；和/或，第四时间阈值的取值范围为5到10分钟；和/或，第一温度阈值的取值范围为50-70℃；和/或，第二时间阈值的取值范围为50-70℃；和/或，第三时间阈值的取值范围为50-70℃。
- 如权利要求14-24任一项所述的方法，当发生电加热器干烧时，由故障提示单元发出提示。
- 如权利要求25所述的方法，所述故障提示单元选自显示单元、扬 声器、指示灯中的一种或多种，通过文字、图像、语音、蜂鸣、和/或闪烁灯的形式发出提示。
- 一种空调，包括：电加热器；内风机；电加热器保护装置，所述电加热器保护装置为权利要求1-13任一项所述的电加热器保护装置。
- 一种计算机可读存储介质，其特征在于，其上存储有计算机程序，所述程序被处理器执行时实现权利要求14-26任一所述方法的步骤。
- 一种空调，其特征在于，包括处理器、存储器以及存储在存储器上可在处理器上运行的计算机程序，所述处理器执行所述程序时实现权利要求14-26任一所述方法的步骤。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711221573.7 | 2017-11-23 | ||
| CN201711221573.7A CN108180595B (zh) | 2017-11-23 | 2017-11-23 | 一种电加热器保护方法、装置及空调 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2019100774A1 true WO2019100774A1 (zh) | 2019-05-31 |
Family
ID=62545485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2018/100952 WO2019100774A1 (zh) | 2017-11-23 | 2018-08-17 | 一种电加热器保护方法、装置及空调 |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108180595B (zh) |
| WO (1) | WO2019100774A1 (zh) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113551370A (zh) * | 2021-07-12 | 2021-10-26 | 珠海格力电器股份有限公司 | 一种空调器的干烧检测方法、空调器 |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108180595B (zh) * | 2017-11-23 | 2019-10-01 | 珠海格力电器股份有限公司 | 一种电加热器保护方法、装置及空调 |
| CN109028458B (zh) * | 2018-07-31 | 2020-07-31 | 奥克斯空调股份有限公司 | 一种故障处理方法、装置及空调器 |
| CN110398049B (zh) * | 2019-07-26 | 2021-03-19 | 广东美的暖通设备有限公司 | 空调器控制方法、空调器及计算机可读存储介质 |
| CN111245079A (zh) * | 2020-01-09 | 2020-06-05 | 珠海格力电器股份有限公司 | 空调机控制方法、装置、设备和空调机 |
| CN111728549A (zh) * | 2020-06-01 | 2020-10-02 | 上海明略人工智能(集团)有限公司 | 洗碗机的故障定位方法及装置、存储介质、电子装置 |
| CN112303818B (zh) * | 2020-10-23 | 2021-10-29 | 珠海格力电器股份有限公司 | 一种空调***的化霜控制装置、方法和空调*** |
| CN112696800B (zh) * | 2020-12-25 | 2021-11-19 | 珠海格力电器股份有限公司 | 空调器的电加热器保护方法和装置、存储介质、空调器 |
| CN113418273A (zh) * | 2021-06-30 | 2021-09-21 | 珠海拓芯科技有限公司 | 一种电加热继电器热故障检测方法和空调器 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829529A (zh) * | 2012-09-24 | 2012-12-19 | 宁波奥克斯空调有限公司 | 用于空调器辅助电加热的控制装置及其控制方法 |
| CN107062416A (zh) * | 2017-05-17 | 2017-08-18 | 广东美的制冷设备有限公司 | 空调器及其控制方法和计算机可读存储介质 |
| CN108180595A (zh) * | 2017-11-23 | 2018-06-19 | 珠海格力电器股份有限公司 | 一种电加热器保护方法、装置及空调 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2957691B1 (fr) * | 2010-03-19 | 2012-09-14 | Thermor Pacific | Procede de controle d'une installation et installation adaptee a la mise en oeuvre de ce procede |
| CN102927656B (zh) * | 2012-11-13 | 2014-11-12 | 海信（山东）空调有限公司 | 空调辅助电加热器的故障检测方法及故障保护电路 |
| CN104066211B (zh) * | 2013-03-19 | 2016-01-06 | 美的集团股份有限公司 | 一种具有干烧识别功能的电加热器及其干烧识别的方法 |
| CN103528134B (zh) * | 2013-09-27 | 2016-06-29 | 广东美的制冷设备有限公司 | 空调器及其加热控制方法 |
| CN106403195A (zh) * | 2016-10-18 | 2017-02-15 | 青岛海尔空调器有限总公司 | 一种空调电辅热装置的控制方法及装置 |
| CN106524411A (zh) * | 2016-11-02 | 2017-03-22 | 王华勤 | 一种挂式空调故障诊断控制方法 |
| CN206347700U (zh) * | 2016-12-31 | 2017-07-21 | 广州南侨食品有限公司 | 应用于空调控制***的电加热器保护装置 |
-
2017
- 2017-11-23 CN CN201711221573.7A patent/CN108180595B/zh active Active
-
2018
- 2018-08-17 WO PCT/CN2018/100952 patent/WO2019100774A1/zh active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829529A (zh) * | 2012-09-24 | 2012-12-19 | 宁波奥克斯空调有限公司 | 用于空调器辅助电加热的控制装置及其控制方法 |
| CN107062416A (zh) * | 2017-05-17 | 2017-08-18 | 广东美的制冷设备有限公司 | 空调器及其控制方法和计算机可读存储介质 |
| CN108180595A (zh) * | 2017-11-23 | 2018-06-19 | 珠海格力电器股份有限公司 | 一种电加热器保护方法、装置及空调 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113551370A (zh) * | 2021-07-12 | 2021-10-26 | 珠海格力电器股份有限公司 | 一种空调器的干烧检测方法、空调器 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108180595A (zh) | 2018-06-19 |
| CN108180595B (zh) | 2019-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2019100774A1 (zh) | 一种电加热器保护方法、装置及空调 | |
| CN105357780B (zh) | 一种ptc电加热器干烧保护方法和装置以及家用电器 | |
| CN107270548B (zh) | 超温保护控制***及电热水器 | |
| CN103557596B (zh) | 一种暖风机的控制方法 | |
| CN104053254B (zh) | 一种电加热保护电路及保护方法 | |
| CN104019527A (zh) | 一种电动汽车空调*** | |
| CN206347700U (zh) | 应用于空调控制***的电加热器保护装置 | |
| CN105674561A (zh) | 热泵热水器及其控制方法 | |
| CN104104059A (zh) | 微波炉及其安全保护电路和安全保护控制方法 | |
| CN105352091A (zh) | 加湿器及其防干烧方法 | |
| CN205208821U (zh) | 加湿器 | |
| CN103605386A (zh) | 一种自动散热的电器控制柜 | |
| CN107990409A (zh) | 空调室内机、空调的控制方法、空调以及存储介质 | |
| CN105352110A (zh) | 一种空调器电辅热的控制方法、控制器及空调器 | |
| CN205014550U (zh) | 一种空调器 | |
| CN105157237A (zh) | 加热器的控制方法及控制装置 | |
| CN208154728U (zh) | 空调***及其防起火控制装置 | |
| CN112394659A (zh) | 一种家用电器的风机电流检测控制方法 | |
| CN103574907B (zh) | 用于热泵热水器的电加热功能的控制装置及其控制方法 | |
| CN202734255U (zh) | 用于热泵热水器的电加热功能的控制装置 | |
| JP2018054189A (ja) | 温水機器 | |
| CN204012659U (zh) | 微波炉及其安全保护电路 | |
| CN108105939A (zh) | 空调***及其防起火控制装置、方法 | |
| CN110764449B (zh) | 一种空气炸锅温度保护的控制方法 | |
| JP2016205707A (ja) | ペレットストーブの非常用電源装置及びこれを組み込んだペレットストーブ |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 18881737 Country of ref document: EP Kind code of ref document: A1 |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 18881737 Country of ref document: EP Kind code of ref document: A1 |
|
| 32PN | Ep: public notification in the ep bulletin as address of the adressee cannot be established |
Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 02.10.2020) |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 18881737 Country of ref document: EP Kind code of ref document: A1 |