WO2021057045A1 - Procédé de détermination d'anomalie d'ensemble de chauffage, et dispositif de nettoyage sanitaire - Google Patents

Procédé de détermination d'anomalie d'ensemble de chauffage, et dispositif de nettoyage sanitaire Download PDF

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Publication number
WO2021057045A1
WO2021057045A1 PCT/CN2020/091075 CN2020091075W WO2021057045A1 WO 2021057045 A1 WO2021057045 A1 WO 2021057045A1 CN 2020091075 W CN2020091075 W CN 2020091075W WO 2021057045 A1 WO2021057045 A1 WO 2021057045A1
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WIPO (PCT)
Prior art keywords
water
temperature
abnormal
pump
difference
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PCT/CN2020/091075
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English (en)
Chinese (zh)
Inventor
林孝发
林孝山
林山
刘祖华
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厦门科牧智能技术有限公司
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Publication of WO2021057045A1 publication Critical patent/WO2021057045A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B11/00—Arrangements or adaptations of tanks for water supply
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B5/00—Use of pumping plants or installations; Layouts thereof
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons, valves, in the pipe systems
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons, valves, in the pipe systems
    • E03B7/071—Arrangement of safety devices in domestic pipe systems, e.g. devices for automatic shut-off
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons, valves, in the pipe systems
    • E03B7/072—Arrangement of flowmeters
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/07—Arrangement of devices, e.g. filters, flow controls, measuring devices, siphons, valves, in the pipe systems
    • E03B7/078—Combined units with different devices; Arrangement of different devices with respect to each other

Definitions

  • the invention relates to the field of sanitary ware, in particular to a method for judging an abnormality of a heating assembly and a sanitary cleaning device.
  • Existing sanitary cleaning devices usually include water tanks, solenoid valves, temperature or flow sensors, heat exchangers, water pumps, nozzles, controllers and other components.
  • the water tank is used to store cleaning water
  • the pump is used to pump cleaning water
  • the heater is used to The extracted cleaning water is heated
  • the temperature sensor is used to detect the temperature
  • the flow sensor is used to detect the flow
  • the controller is used to control the coordinated work of various components to achieve the flushing function.
  • the abnormal judgment of the related heating function device is usually only judged by the detection equipment, the current signal or the data collection during the one-way use process, and the complexity and accuracy are not considered. Ideal and easy to be restricted by the conditions of the use environment and detection interference.
  • the main purpose of the present invention is to overcome the above-mentioned shortcomings in the prior art, and propose a heating assembly abnormality judgment method and sanitary cleaning device that make full use of the features of the module's own functional components, and the judgment method is simple and reliable.
  • a method for judging an abnormality of a heating assembly is provided with a water tank, a heater, a pump and a first temperature sensor.
  • the pump is connected to the water tank to extract cleaning water.
  • the heater is located between the pump and the water tank to heat the cleaning water. It is provided with a first temperature sensor for detecting the temperature of the outlet water of the heater; judging whether the heating component is abnormal according to the state of the pump and/or heater and combining the change of the outlet water temperature, and when abnormal, stop operation and/or alarm .
  • the difference of the outlet water temperature within the specified time T1 is calculated and compared with the preset threshold Q1. If the absolute value of the difference is less than or equal to the threshold Q1, the pump is abnormal.
  • the difference of the outlet water temperature within the specified time T2 is calculated and compared with the preset threshold Q2. If the absolute value of the difference is less than or equal to the threshold Q2, the heater is abnormal.
  • the difference of the outlet water temperature within the predetermined time T3 is calculated and compared with the preset threshold Q3. If the absolute value of the difference is greater than the threshold Q3, the heater is abnormal.
  • a second temperature sensor is provided for detecting the inlet water temperature of the water tank; according to the state of the heating assembly, combined with the difference between the inlet water temperature and the outlet water temperature, it is judged whether the heating assembly is abnormal.
  • the inlet water temperature detected by the second temperature sensor is acquired
  • the outlet water temperature detected by the first temperature sensor is acquired after a predetermined time T1
  • the absolute value of the difference between the two is calculated with a preset threshold value.
  • Q4 comparison if it is greater than or equal to the threshold Q4, the pump is abnormal.
  • the water inlet temperature detected by the second temperature sensor is obtained in real time, and the difference between the water inlet temperature and the preset value is compared. If the absolute value is greater than or equal to the threshold Q5, the water tank inlet is abnormal.
  • it further includes a water inlet valve, which is connected to the water inlet end of the water tank; when the water inlet valve is opened, the inlet water temperature detected by the second temperature sensor is acquired, and the second temperature sensor is acquired after a predetermined time T4.
  • the outlet water temperature detected by a temperature sensor compares the absolute value of the difference between the two with a preset threshold Q1. If it is less than or equal to the threshold Q1, the inlet valve is abnormal.
  • it further includes a first water level sensor for detecting the lower limit water level of the water tank; when the lower limit water level is detected, the outlet water temperature difference within the specified time T1 is calculated and compared with the preset threshold Q1, if the outlet water temperature difference If the absolute value of is less than or equal to the threshold Q1, the pump is abnormal.
  • a first water level sensor for detecting the lower limit water level of the water tank; when the lower limit water level is detected, the outlet water temperature difference within the specified time T1 is calculated and compared with the preset threshold Q1, if the outlet water temperature difference If the absolute value of is less than or equal to the threshold Q1, the pump is abnormal.
  • it further includes a water inlet valve, which is connected to the water inlet end of the water tank; when the water inlet valve is opened, if the lower limit water level signal of the first water level sensor is not received within a predetermined time T5, the water inlet valve abnormal.
  • a water inlet valve which is connected to the water inlet end of the water tank; when the water inlet valve is opened, if the lower limit water level signal of the first water level sensor is not received within a predetermined time T5, the water inlet valve abnormal.
  • the water outlet temperature detected by the first temperature sensor is acquired when the lower limit water level is detected for the first time, and the water outlet temperature is acquired again when the lower limit water level is detected again, and the difference between the two is calculated. If the absolute value is less than or equal to the threshold Q6, the first temperature sensor is abnormal.
  • a sanitary cleaning device the functional module of which includes a flushing component and a heating component, characterized in that: the above-mentioned heating component abnormality judgment method is adopted; when the heating component is abnormal, if the function module is not running, the function module is prohibited from being turned on; If the function module is running, the heater, pump, flushing component and water tank will be turned off in order, and an alarm will be issued.
  • the present invention compared with the prior art, the present invention has the following beneficial effects:
  • the method and device of the present invention use the state of the pump and/or heater combined with the change in the temperature of the outlet water to determine whether the heating component is abnormal, and when abnormal, stop operation and/or alarm, and make full use of the module's own functional components.
  • the judgment is simple and reliable, and no additional testing equipment and modules are required.
  • the abnormality of the pump is determined by detecting the difference in the water temperature, and the abnormality of the pump can be detected in time and alarms and prompts; when the heater is started, the difference in the water temperature is detected To judge whether the heater is abnormal, including the heater is not heating or overheating, and can give an alarm and prompt in time; a single temperature sensor can realize component abnormality judgment, which is simple, reliable, and easy to implement.
  • the method and device of the present invention are equipped with a second temperature sensor, which can judge whether the heating component is abnormal according to the state of the heating component and the difference between the inlet water temperature and the outlet water temperature. Multiple combinations are fully judged, and the result is more accurate and reliable. .
  • the water inlet temperature is obtained in real time, and the difference between it and the preset value is compared to determine whether the water tank has an abnormal water inlet, so as to avoid overheating of the inlet water.
  • the method and device of the present invention when the lower limit water level is detected, judge whether the pump is abnormal according to the temperature difference of the outlet water, and give an alarm or prompt in time; when the inlet valve is opened, according to the lower limit water level signal, it can also judge whether the inlet valve is Abnormal, so as to report to the police or prompt in time.
  • the method and device of the present invention obtain the outlet water temperature when the lower limit water level is detected for the first time, and obtain the outlet water temperature again when the lower limit water level is detected again. According to the difference between the two, it can be judged whether the first temperature sensor is abnormal. Alarm or prompt in time.
  • Figure 1 is an exploded view of the heating assembly
  • Figure 2 is a perspective view of the heating assembly
  • Figure 3 is a cross-sectional view of the heating assembly
  • Figure 4 is a cross-sectional view of the heating assembly
  • Figure 5 is a sectional view of the heating assembly
  • FIG. 6 is a flow chart of pump abnormality judgment (Embodiment 1);
  • FIG. 7 is a flowchart of heater abnormality judgment (Embodiment 1);
  • Figure 8 is a flow chart for judging abnormal water temperature of outlet water (Embodiment 1);
  • Figure 9 is a flow chart of pump abnormality judgment (Embodiment 2);
  • Figure 10 is a flow chart of the temperature sensor self-check (the second embodiment).
  • Figure 11 is a flow chart for judging the abnormality of the inlet valve (Embodiment 3);
  • Figure 12 is a flow chart of pump abnormality judgment (Embodiment 4);
  • Figure 13 is a flow chart for judging the abnormality of the inlet valve (Embodiment 4);
  • the heating assembly is provided with a water tank 10, a heater 20, a pump 30 and other components.
  • the water tank 10 is used to store washing water, and is provided with a water inlet 11 or a water inlet pipe.
  • a heating cavity 40 and a water outlet 12 may be arranged inside or outside the water tank 10, the heating cavity 40 is connected to the water tank 10 through the water outlet 12, and the heating cavity is used for placing the heater 20.
  • the water inlet end of the pump 30 is in communication with the heating chamber 40, and is used to pump the water in the water tank 10 to the heating chamber 40, and send it out to the relevant cleaning components after being heated by the heater 20.
  • the heater 20 and the pump 30 are controlled by a controller to control their working status.
  • the method of the present invention is provided with a first temperature sensor 13 for detecting the outlet water temperature of the heater 20 and sending it to the controller.
  • the controller judges whether the heating component is abnormal according to the state of the pump and/or the heater combined with the change in the temperature of the outlet water, and stops operation and/or alarms when it is abnormal.
  • the difference of the outlet water temperature within the specified time T1 is calculated and compared with the preset threshold Q1. If the absolute value of the difference is less than or equal to the threshold Q1, the pump 30 is abnormal.
  • the difference in the outlet water temperature is measured from the moment the pump 30 is turned on, and the temperature value of the first temperature sensor 13 is obtained, and the temperature value of the first temperature sensor 13 is obtained again after the specified time T1, and the difference between the two temperature values is compared If the absolute value is less than or equal to the threshold value Q1, it is determined that the abnormality of the pump 30 causes the abnormality of the water system, and the system is stopped and/or alarmed; if the absolute value is greater than the threshold value Q1, it is determined that the pump 30 is normal and the water system is normal, and the system continues to operate.
  • T1 is the time for the washing water to be drawn from the water outlet 12 of the water tank 10 to the first temperature sensor 13, and the threshold Q1 is preset according to
  • the first temperature sensor 13 detects the normal temperature air temperature value for the first time, and the normal temperature air temperature value for the second time.
  • the absolute value of the difference between the two should be less than
  • the present invention is set as
  • the difference of the outlet water temperature within the specified time T2 is calculated and compared with the preset threshold Q2. If the absolute value of the difference is less than or equal to the threshold Q2, the heater 20 is abnormal. Because the heater 20 does not heat. details as follows:
  • the controller starts the heater 20 according to the operation instruction, starts timing and obtains the temperature value of the first temperature sensor 13, and obtains the temperature value of the first temperature sensor 13 again after a predetermined time T2, and compares it twice When the absolute value of the temperature value and the difference is less than or equal to the threshold Q2, it is determined that the heater 20 is abnormal, specifically that the heater 20 does not heat, and the system operation and/or alarm are stopped.
  • T2 is the theoretical limit time for heating water to the lowest operating water temperature
  • Q2 is set according to
  • the present invention is set to
  • the minimum operating water temperature is the nominal minimum water supply temperature of the equipment, such as 3°C from 3°C to 35°C; the minimum heating water temperature is the lowest functional water temperature of the water temperature heating function, such as: 35°C to 39°C 35°C.
  • the difference of the outlet water temperature within the specified time T3 is calculated and compared with the preset threshold Q3. If the absolute value of the difference is greater than the threshold Q3, the heater 20 is abnormal, specifically the heater 20 is overheated. as follows:
  • the controller starts the heater 20 according to the operation instruction, starts timing and obtains the temperature value of the first temperature sensor 13, and obtains the temperature value of the first temperature sensor 13 again after the specified time T3, and compares the two temperature values The absolute value of the difference is greater than the threshold Q3, it is judged that the heater 20 is overheated, and the system operation and/or alarm are stopped.
  • T3 is the theoretical limit time for heating water to the highest operating water temperature
  • Q3 is set according to
  • the present invention is set to
  • the highest operating water temperature is the nominal highest water supply temperature used by the equipment, such as 35°C among 3°C ⁇ 35°C; the highest water temperature is the highest function water temperature of the water temperature heating function, such as: 39°C among 35°C ⁇ 39°C °C.
  • the device when the first temperature sensor 13 detects that the temperature of the outlet water is greater than or equal to a preset threshold (for example, 42°C), the device alarms/abnormally indicates, and the controller controls the heater 20 to stop heating; the flushing function stops , The waterway is switched to the self-cleaning water outlet to continue water outlet or until the water temperature detected by the first temperature sensor 13 is close to the inlet water temperature, the water outlet is stopped.
  • a preset threshold for example, 42°C
  • the present invention also provides a sanitary cleaning device, the functional modules of which include a flushing component, a heating component, a controller, and the like.
  • the flushing components include conventional components such as solenoid valves and nozzles.
  • the controller is used for controlling the heating component to heat and the flushing component to perform flushing action according to the input control command.
  • the sanitary cleaning device of the present invention adopts the above-mentioned heating component abnormality judgment method; when the controller judges that the heating component is abnormal (including the abnormality of the pump 30 and the heater 20), if the functional module (including the flushing component and the heating component) If it is not running (corresponding function is not started), the function module is forbidden to start. If the function module is running, turn off the heater 20, pump 30, flushing component and water tank water in order in order, and give an alarm. Turn off in order means to turn off the heater 20 first, turn off the pump 30 at intervals, and then turn off flushing at intervals Components, and finally close the water tank to enter the water.
  • a method and device for judging an abnormality of a heating assembly the main feature of which is the same as that of the first embodiment, the difference is that the heating assembly is also provided with a second temperature sensor 14 for detecting the inlet water temperature of the water tank 10.
  • the controller judges whether the heating component is abnormal according to the state of the heating component and combining the difference between the inlet water temperature and the outlet water temperature.
  • the controller starts timing when the pump 30 is turned on, and obtains the temperature value of the second temperature sensor 14, and obtains the temperature value of the first temperature sensor 13 after a predetermined time T1, and compares the difference between the two temperature values. If the absolute value is greater than or When it is equal to the threshold Q4, it is judged that the pump 30 is abnormal, and the system is stopped and/or alarmed; if the absolute value is less than the threshold Q4, it is judged that the waterway system is normal and the system continues to operate.
  • T1 is the time for water to be drawn from the water outlet 12 of the water tank 10 to the first sensor
  • Q4 is set according to
  • the second temperature sensor 14 acquires the temperature value of the inlet water temperature
  • the first temperature sensor 13 acquires the temperature value of the normal temperature air. The difference between the two should be greater than the value of the inlet water temperature e °C-The outlet water temperature of the heater is not turned on f°C
  • the present invention sets
  • the water inlet temperature detected by the second temperature sensor 14 can also be obtained in real time, and the difference between it and the preset value can be compared. If the absolute value of the difference is greater than or equal to the threshold Q5, the water tank enters The water is abnormal.
  • the preset value is the temperature value of normal temperature water.
  • the threshold Q5 is the upper and lower limit values of the inlet water temperature.
  • the abnormal water inflow of the water tank includes overheating of the water inflow.
  • the first temperature sensor 13 and the second temperature sensor 14 may be periodically collected and detected in the standby state, and the detected data is compared with values. The difference between the values is greater than the preset value, and the controller determines If the corresponding temperature sensor is abnormal, an alarm and prompt will be issued to realize the self-check of the temperature sensor.
  • the second temperature sensor 14 is arranged near the water tank 10 and can penetrate the side wall of the water tank 10 or be located in the water tank 10 and is higher than the water surface at the water outlet 12 of the water tank 10.
  • a method for judging abnormalities of heating components and a sanitary cleaning device the main scheme is the same as that of the second embodiment, the difference lies in:
  • the heating assembly is also provided with a water inlet valve, which is connected to the water inlet end of the water tank 10, and is used to provide the water tank 10 with cleaning water of no less than a prescribed flow rate M1.
  • M1 can be set according to needs and is not limited here.
  • the controller starts timing when the water inlet valve is opened, and obtains the temperature value of the second temperature sensor 14, and obtains the temperature value of the second temperature sensor 14 again after a predetermined time T4, and compares the two temperature values If the absolute value of the difference is less than or equal to the threshold Q1, it is judged that the inlet valve is abnormal, that is, the inlet valve does not enter water, and the system is stopped and/or alarms.
  • the prescribed time T4 is the time for the water tank 10 to enter the water from the empty tank to the water level of the second temperature sensor 14, for example, 4 seconds.
  • the threshold Q1 is set according to
  • a method for judging an abnormality of a heating assembly and a sanitary cleaning device is the same as that of the first embodiment. The difference lies in:
  • the heating assembly also includes a first water level sensor for detecting the lower limit water level of the water tank 10 and sending the water level information to the controller.
  • the controller when the controller detects the lower limit water level, it starts timing when the pump 30 is turned on, and obtains the temperature value of the first temperature sensor 13, and obtains the temperature value of the first temperature sensor 13 again after a prescribed time T1. Compare the difference between the two temperature values. If the absolute value is less than or equal to the threshold Q1, it is determined that the pump 30 is abnormal, and the system is stopped and/or alarmed; if the absolute value is greater than the threshold Q1, it is determined that the waterway system is normal and the system continues to operate.
  • the T1 is the time when water is drawn from the water outlet 12 of the water tank 10 to the first water level sensor, and the threshold Q1 is preset according to
  • the present invention is set to
  • a water inlet valve is also provided, which communicates with the water inlet end of the water tank 10, and provides cleaning water to the water tank 10 with a flow rate M1 not lower than the specified flow rate.
  • M1 can be set as required, and is not limited here. .
  • the controller starts timing when the water inlet valve is opened. After the specified time T5 has not received the lower limit water level signal of the first water level sensor, it is judged that the water inlet valve is abnormal, that is, the water inlet valve does not enter water and stops. Run the system and/or alarm.
  • the first temperature sensor 13 it can also be determined whether the first temperature sensor 13 is abnormal, including the following:
  • the controller acquires the temperature value of the first temperature sensor 13 when the lower limit water level is detected for the first time, and acquires the temperature value of the first temperature sensor 13 again when the lower limit water level is detected again, and compares the difference between the two temperature values. If the absolute value is If it is less than or equal to the specified value Q6, it is determined that the first temperature sensor 13 is abnormal, and the system is stopped and/or alarms.
  • the Q6 is the temperature sensor error value, which is approximately equal to zero.
  • the invention judges whether the heating component is abnormal according to the state of the pump and/or heater and the change of the outlet water temperature, and stops operation and/or alarms when the abnormality occurs.
  • the judgment method is simple and reliable without adding additional detection equipment and modules.
  • the invention discloses a method and a device for judging abnormality of a heating assembly.
  • the heating assembly is provided with a water tank, a heater, a pump and a first temperature sensor.
  • the pump is connected with the water tank to extract cleaning water, and the heater is located between the pump and the water tank.
  • Heating cleaning water is provided with a first temperature sensor for detecting the outlet water temperature of the heater; according to the state of the pump and/or heater combined with the change in the outlet water temperature, it is judged whether the heating assembly is abnormal, and when it is abnormal, the operation is stopped and/ Or call the police.
  • the invention makes full use of the features of the module's own functional parts to make judgments, the judgment method is simple and reliable, no additional detection equipment and modules need to be added, and has industrial applicability.

Abstract

L'invention concerne un procédé de détermination d'une anomalie d'un ensemble de chauffage, et un dispositif associé. L'ensemble de chauffage comprend un réservoir d'eau (10), un dispositif de chauffage (20), une pompe (30) et un premier capteur de température (13) ; la pompe (30) est en communication avec le réservoir d'eau (10) afin d'extraire de l'eau de nettoyage, le dispositif de chauffage (20) est située entre la pompe (30) et le réservoir d'eau (10) afin de chauffer l'eau de nettoyage, et le premier capteur de température (13) est disposé et utilisé pour mesurer la température de sortie de l'eau du dispositif de chauffage (20). La détermination d'une anomalie possible de l'ensemble de chauffage est effectuée en fonction de l'état de la pompe (30) et/ou du dispositif de chauffage (20) en combinaison avec la variation de la température de sortie de l'eau, et, si l'ensemble de chauffage présente une anomalie, le fonctionnement est arrêté et/ou une alarme est produite.
PCT/CN2020/091075 2019-09-27 2020-05-19 Procédé de détermination d'anomalie d'ensemble de chauffage, et dispositif de nettoyage sanitaire WO2021057045A1 (fr)

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CN201910927560.4A CN110726250B (zh) 2019-09-27 2019-09-27 一种加热组件异常判断方法和卫生清洗装置
CN201910927560.4 2019-09-27

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CN112128819B (zh) * 2020-08-28 2022-10-25 华帝股份有限公司 一种防止油烟机干吸的控制方法及其系统
CN114440438B (zh) * 2022-02-15 2023-04-07 佛山市顺德区美的饮水机制造有限公司 即热装置及其工作状态诊断方法和装置、水处理装置
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