TR2021021666A2 - A SYSTEM FOR DETERMINING THE LAST LIFE OF THE HEAT EXCHANGER OF WATER HEATERS - Google Patents

Abstract

a first line (110) hydraulically coupled to a central heating loop (310) and a second line hydraulically coupled to a domestic water line (320); (120) a heating cell (130) associated with the first line (110) for heating the fluid in said first line (110); a first volume (151) hydraulically connected to the first line (110), a second volume (152) hydraulically connected to said second line (120), at least provided between said first volume (151) and said second volume (152) occlusion in the first volume (151) of said heat exchanger 150 of a water heater (100) having a heat transfer element (153), comprising a heat exchanger (150) for providing heat transfer between the first line (110) and the second line (120) It is a system for detecting (200). Accordingly, depending on the heat transfer area of the heat exchanger 150, it will determine a heat transfer coefficient according to a logarithmic mean temperature difference and a heat transfer rate; It is characterized in that when the heat transfer coefficient exceeds a first threshold value, the heat transfer coefficient exceeds a second threshold value depending on the recorded heat transfer coefficients by means of an aging model and it includes a control unit (210) that includes the process steps of determining a lifetime.

Description

DESCRIPTION TO DETERMINE THE REMAINING LIFE OF THE HEAT EXCHANGER OF WATER HEATERS A SYSTEM FOR TECHNICAL FIELD The invention relates to a system for detecting the remaining useful life of water heaters. Meet Clogging and remaining usage time of the heat exchanger of combi-type water heaters in detail It relates to a system for detecting lifespan.

PRIOR ART Water Heaters, especially combination water heaters, have a central heating cycle and a domestic water heater. It depends on the line. Fluid in the central heating circuit and water in the domestic water line It is heating. Water in the central heating cycle is taken into the water heater, a heating cell It is heated by the heating system and given back to the central heating cycle. Central heating Heating of rooms is provided by heating components such as radiators in the cycle.

Heating the water in the domestic water line requires water taken from the central heating cycle. It includes a first volume through which it passes and a second volume through which water from the domestic water line passes.

The first volume and the second volume exchange heat through a heat transfer medium.

From the first volume of water heated by the heating cell of the central heating cycle, Heat transfer occurs to the water in the second volume of the domestic water line. It causes the heater not to be heated or the pressure to decrease. In this situation, users It causes negative effects on comfort. Clogging gets worse in later stages. damage to the heat exchanger and liquid leakage between the two volumes of the heat exchanger. may cause migration. Clogging in the heat exchanger causes the water to reach the desired level. It causes the heater not to be heated, which reduces the comfort of use and reduces energy consumption. It increases. It allows temperature measurements to be made in regions and allows temperature measurements to be measured within a certain threshold. A system that produces the signal is mentioned.

As a result, all the above-mentioned problems hinder making an innovation in the relevant technical field. made it mandatory.

BRIEF DESCRIPTION OF THE INVENTION The present invention aims to eliminate the above-mentioned disadvantages and contribute to the relevant technical field. to determine the remaining lifespan of a water heater to bring new advantages It is about a system.

One purpose of the invention is to determine the remaining useful life of heat exchangers of water heaters. To put forward a system for

Another purpose of the invention is to create a system that detects blockage in heat exchangers. is to put.

All purposes mentioned above and which will emerge from the detailed explanation below. The present invention is based on a system hydraulically connected to a central heating cycle. a first line and a second line hydraulically connected to a domestic water line; the first mentioned a heating cell associated with the first line to heat the liquid in the line; hydraulically with first line to a first volume connected to a second volume hydraulically connected to said second line. volume, at least one space provided between said first volume and said second volume. It has a heat transfer element to ensure heat transfer between the first line and the second line. of a water heater comprising a heat exchanger in the first volume of said heat exchanger. It is a system to detect blockage. Accordingly, the temperature of the liquid entering the first volume is a first temperature sensor for measuring; measuring the temperature of the liquid coming out of the first volume a second temperature sensor for; to measure the temperature of the liquid entering the second volume. third temperature sensor; to measure the temperature of the liquid coming out of the second volume. fourth temperature sensor; liquid in the first line or central heating cycle a flow measuring means for measuring mass flow; the first temperature sensor mentioned, said second temperature sensor, said third temperature sensor, said temperature and flow from the fourth temperature sensor and said flow measurement means It includes a control unit arranged to take measurements, the said control unit The temperature and flow measurements taken by the unit, along with the time information when the measurements were taken will associate it and save it in a memory unit; from the first temperature sensor, the second temperature According to the measurements taken from the sensor and flow measurement device and a specific heat value will determine a heat transfer rate of the first volume; first temperature sensor, second temperature According to the measurements taken from the sensor, third temperature sensor and fourth temperature sensor determine a logarithmic mean temperature difference for the heat exchanger; heat of heat exchanger Depending on the transfer area, said logarithmic average temperature difference and said heat will determine a heat transfer coefficient based on the transfer rate; mentioned heat transfer periodically calculate the coefficient and save it to the said memory unit. be configured, The control unit also -monitor heat transfer coefficients, -recorded through an aging model when the heat transfer coefficient exceeds a first threshold value Depending on the heat transfer coefficients, the heat transfer coefficient exceeds a second threshold value Determining a lifespan with It is characterized by being configured to perform its operations.

Thus, blockage on the central heating cycle side of the heat exchanger can be detected.

The lifespan of the heat exchanger is determined according to the detected blockage.

Users should take precautions before clogging occurs, based on this remaining life information. is provided. The user is less exposed to the negativities caused by congestion. remains.

The feature of a possible embodiment of the invention is the recorded work of said aging model. It is a stochastic machine learning model trained with transfer coefficients. So the heat The detection of blockage in the heat exchanger can be made with increased accuracy.

The feature of another possible embodiment of the invention is that the control unit, flow measurement, said specific heat value and the temperature received from the first temperature sensor and the second temperature sensor configured to determine the heat transfer coefficient by multiplying the difference of the measurements is that it has been done.

The feature of another possible embodiment of the invention is the control unit. include a user interface; of the control unit, the said service life It is configured to monitor in the user interface. Like this The user can follow the life of the heat exchanger from the user interface is provided.

The feature of another possible embodiment of the invention is that the control unit has a configured to issue a warning signal when the first lifetime exceeds the threshold value. is that it has been done. Thus, the user is notified that the heat exchanger needs to be changed. is happening.

The feature of another possible embodiment of the invention is that the control unit sends the said warning signal. It is configured to display it in the user interface. So the heat Informing the user when the useful life of the heat exchanger reaches a certain level is provided.

The invention is also a water heater comprising a system as above.

The feature of another possible embodiment of the invention is that the said water heater is combined with a combi boiler. is to be. Thus, the remaining useful life of the boiler with the mentioned system is It is provided to be followed by.

The invention also includes a first line hydraulically connected to a central heating cycle and a domestic water supply system. a second line hydraulically connected to the line; to heat the liquid in the first line mentioned. a heating cell associated with the first line; a first hydraulically connected to the first line volume and a second volume hydraulically connected to said second line, said at least one heat transfer element provided between the first volume and said second volume containing a heat exchanger to provide heat transfer between the first line and the second line. To detect the blockage in the first volume of the said heat exchanger of a water heater containing It is a method for . Accordingly, by a control unit; -the temperature of the liquid in the first line and entering the first volume is greater than the temperature in the first line and the first volume the temperature of the exiting liquid, the mass flow rate of the liquid in the central heating cycle and a specific heat determines a heat transfer rate of the first volume according to its value -an Iogarithmic system for the heat exchanger according to the temperatures of the liquids entering and exiting the heat exchanger. Determining the average temperature difference -the mentioned Iogarithmic average temperature, depending on the heat transfer area of the heat exchanger determining a heat transfer coefficient based on the difference and said heat transfer rate; saving the mentioned heat transfer coefficient to the memory unit depending on time -monitoring the heat transfer coefficient -recorded through an aging model when the heat transfer coefficient exceeds a first threshold value Depending on the heat transfer coefficients, the heat transfer coefficient exceeds a second threshold value Determining a lifespan with characterized by the fact that the processing steps are configured to be carried out is done. Thus, the remaining useful life of the heat exchanger can be determined.

The feature of another possible embodiment of the invention is that the said aging model is It is a stochastic machine learning model trained with transfer coefficients. So the heat Determination of the remaining useful life of the heat exchanger can be done with increased accuracy.

The feature of another possible embodiment of the invention is that its lifespan is limited to a first use. It is configured to give a warning signal when its lifespan exceeds the threshold value.

Thus, when the lifespan of the heat exchanger reaches a certain level, the user information is provided.

BRIEF DESCRIPTION OF THE FIGURE A representative view of the water heater is given in Figure 1.

A representative view of the system is given in Figure 2.

DETAILED DESCRIPTION OF THE INVENTION In this detailed explanation, the remaining useful life of the water heaters (100) subject to the invention is determined. A system (200) for understanding the subject only with no limitations It is explained with examples that will not create any impact.

The invention eliminates the blockage in the heat exchanger (150) in water heaters (100) and the resulting heat It is a system (200) to detect the remaining useful life of the heat exchanger (150). To Figure 1 Referring to water heater 100, a first line hydraulically connected to a central heating loop 310 (110); It includes a second line (120) hydraulically connected to a domestic use line.

The liquid circulating from the central heating cycle (310) enters the first line (110) here. After it is heated, it comes out and rejoins the central heating cycle (310). City Domestic water coming from a line such as the mains enters the second line (120) and after being heated then users can tap etc. domestic use line so that it can be accessed from components such as participates. The liquid in the first line (110) can be water or it can be used for heating purposes. It can be any liquid used. The first line (110) is used to mobilize the liquid. It may also include a pump.

The water heater (100) contains a heating cell (130) for heating the liquid in the first line (110). Contains. Said heating cell (130) uses electricity, gas and similar energy elements. It gives off heat by consuming it. Heating cell (130), thermostat-like structures or a control It can be controlled by the unit (210). In other words, the heating cell (130) The working and closed loops can be controlled by these components.

The water heater connects the heated liquid in the first line (110) to the water in the second line (120). It contains a heat exchanger (150) to ensure heat transfer without mixing. Heat a second volume (152) that receives the liquid and a heat exchanger between the first volume (151) and the second volume (152). It contains a heat transfer element (153) to ensure heat transfer. The mentioned work It may be of the type known as plate type. The innovative aspect of the system (200) subject to the invention is Depending on the condition of the blockage in the first volume (151) of the heat exchanger (150), (150) is to enable the determination of a useful life.

The said system (200) monitors the temperature of the liquid entering the first volume (151) of the heat exchanger (150). It includes a first temperature sensor (221) to measure it. The first temperature mentioned The sensor (221) detects the temperature of the liquid in the first line (110) before it enters the first volume (151). It measures. In the preferred embodiment of the invention, the first temperature sensor (221) It is provided at the entrance of the volume (151). The system (200) also includes the volume coming out of the first volume (151). It includes a second temperature sensor (222) to measure the temperature of the liquid. Said The second temperature sensor (222) detects that the liquid in the first line (110) comes out of the first volume (151). It measures temperature. In the preferred embodiment of the invention, the second temperature sensor (222), It is provided at the exit of the first volume (151).

The system uses a device to measure the temperature of the liquid entering the second volume (152) of the heat exchanger (150). It contains the third temperature sensor (231). Said third temperature sensor (231), It measures the temperature of the liquid in the second line (120) before it enters the second volume (152).

In the preferred embodiment of the invention, the third temperature sensor (231) is located in the second volume (152). It is provided at the entrance. The system (200) also ensures that the liquid coming out of the second volume (152) It includes a fourth temperature sensor (232) to measure the temperature. Said the fourth temperature sensor (232), where the liquid in the second line (120) comes out of the second volume (152) It measures temperature. In the preferred embodiment of the invention, the fourth temperature sensor (232) is provided at the exit of the second volume (152).

The system consists of a flow measurement device provided on the first line (110) or central heating cycle (310). It includes the vehicle (240). Said flow measurement means (240) is located on the first line (110) or It also measures the mass or volume flow of the liquid in the central heating cycle (310).

In the preferred embodiment of the invention, the flow measurement means (240) is located on the first line (110) or It measures the mass flow of liquid in the central heating cycle (310). Find a possible In its configuration, the flow measurement means (240) is used on the first line (110) or central heating It measures the volumetric flow of the liquid in the cycle (310). As flow measurement means (240) electromagnetic, ultrasonic, vortex, helical or any flowmeter known in the art can be used.

The system includes a control unit (210) to take temperature and flow measurements.

Said control unit (210), first temperature sensor (221), second temperature sensor (222), third temperature sensor (231), fourth temperature sensor (232) and flow measurement a processor unit (211) to receive temperature and flow measurements from the device (240). Contains. The control unit (210) is the data reading and data processing unit of the said processor unit (211). a memory unit (212) associated with the processor unit (211) to allow writing Contains. Said processor unit (211) is a microcontroller on which software codes run. It could be a processor. The control unit (210) transfers the temperature and flow measurements to the location where the measurements were taken. It associates it with time and records it in the said memory unit (212). control unit (210), first temperature sensor (221), second temperature sensor (222) and flow measurement According to the measurements taken from the medium (240) and a specific heat value, the first volume (151) is determines the heat transfer rate. The specific heat value mentioned here is central heating unit temperature increase of the unit mass of the liquid circulating in the cycle (310) or in the first line (110) It expresses the amount of heat energy required for Control unit (210), first temperature sensor (221), second temperature sensor (222), third temperature sensor (231) and fourth determines the average temperature difference. The Iogarithmic mean temperature mentioned here According to the measurements taken from the different temperature sensors, the temperature in the first volume of the heat exchanger (150) It represents an average of the temperature changes in (151) and the second volume (152).

The control unit (210) is calculated according to the heat transfer area of the heat exchanger (150). determines the coefficient. The heat transfer area mentioned here is between the first volume (151) and the second volume. expresses the superficial area of the heat transfer element (153) provided between the volume (152) It does. The control unit (210) periodically adjusts the said heat transfer coefficient. calculates and saves to the said memory unit (212).

The system transmits the measurements taken or calculated values of the control unit (210) to a user. It includes a user interface (260) for monitoring. Control unit (210), heat It monitors the transfer coefficient on said user interface (260). Said The user interface (260) can be provided on the water heater (100). User interface (260) can be positioned in a room far from the water heater (100) in a possible embodiment and It can exchange data with the control unit (210) wired or wirelessly.

The control unit 210 is activated when the heat transfer coefficient exceeds a first threshold value. determines lifespan. Said lifespan is based on recorded heat through an aging model. It is calculated depending on the transfer coefficients. Lifespan, heat transfer As a result of the coefficient exceeding a second threshold value, the remaining usage of the heat exchanger (150) represents its life. The useful life mentioned here is the use of the heat exchanger (150) at a certain point. It refers to the estimated working time remaining without falling below efficiency. heat exchanger When (150) falls below the mentioned efficiency, the first volume (151) and the second volume (152) Sufficient heat transfer cannot be achieved between them and it consumes more energy than necessary.

The mentioned aging model is a software algorithm. Aging model, recorded heat transfer It is a stochastic machine learning model trained with coefficients. Accordingly, the control unit (210) shows the aging model of the heat exchanger (150) according to historical heat transfer coefficients. determines. Heat transfer, for example but not limited to Detection of the decrease in the coefficient indicates a blockage situation in the heat exchanger (150). can. Here, the aging model trained with the recorded heat transfer coefficients is It expresses a downward trend of the coefficient. Accordingly, the heat transfer coefficient is the first When it exceeds the threshold value, the remaining pressure of the heat exchanger (150) occurs as a result of exceeding a second threshold value. lifespan can be calculated.

The control unit (210) is activated when its lifetime exceeds a first lifetime threshold. It is configured to give a warning signal. The first mentioned lifetime threshold The value represents a period of time. The first life threshold is determined at the time of production or can be adjusted by the user. For example; first lifetime threshold is 90 days When set to , when the lifespan is less than 90 days, the controller (210) It gives the mentioned warning signal. The warning signal is controlled by the control unit in a possible embodiment. It is monitored by (210) on the user interface (260). Find a possible In its construction, a second life threshold value can be determined. The second mentioned When the lifetime threshold value is exceeded, the control unit (210) prevents the water heater (100) from operating. can stop it.

The control unit (210) takes temperature and current measurements in real time. Processor The unit (211) processes the measurements taken continuously. The heat transfer rate is the following formula It is calculated with (1).

Here “Gm” is the heat transfer rate in the central heating cycle (310); “m'crr”, central heating mass flow in cycle (310); "only" means the Specific heat value of the liquid in the first line (110); The logarithmic average temperature difference is calculated with the formula (2) below.

(TCHJnler _ TDHH-'.ourlet) ' (TCHourier - TDHWJnIer) (2).LA-!TD = TCHpurlet “" TDI-!Wins Here “LMTD” means the logarithmic mean temperature difference; “”,T temperature; ”CH”, central heating cycle (; “inlet” refers to the input; “outlet” refers to the output. The lsi transfer coefficient is calculated with the formula (3) below.

Here “”, U is the heat transfer coefficient; “Hearth”, heat transfer in the central heating cycle (310) rate; “”A is the heat transfer area of the heat transfer element (153); “LMTD”, Iogarithmic mean represents the temperature difference.

In an example structure; a use when the heat transfer coefficient exceeds a first threshold value. Its purpose is to give time for the processor unit (211) to obtain sufficient data. Lifetime, Estimated heat exchanger remaining after exceeding a second threshold value of the heat transfer coefficient The scope of protection of the invention is stated in the attached claims and this detailed The explanation cannot be limited to what is explained for exemplary purposes. Because a technical expert The person can make similar works in the light of what is explained above, without departing from the main theme of the invention. It is clear that structures can emerge.

REFERENCE NUMBERS GIVEN BELOW 100 kettles 110 First line 120 Second line 130 Heating cells 151 First volume 152 Second volume 153 Heat transfer element 200 Systems 210 Control unit 211 Processor units 212 Memory units 221 First temperature sensor 222 Second temperature sensor 231 Third temperature sensor 232 Fourth temperature sensor 240 Flow measuring means 260 User interface 310 Central heating cycle 320 Domestic water line

Claims (1)

CLAIMS . a first line (110) hydraulically connected to a central heating cycle (310) and a second line hydraulically connected to a domestic water line (320); (120) a heating cell (130) associated with the first line (110) to heat the liquid in the said first line (110); to a first volume (151) hydraulically connected to the first line (110), to a second volume (152) hydraulically connected to said second line (120), at least The blockage in the first volume (151) of said heat exchanger (150) of a water heater (100) that has a heat transfer element (153) and includes a heat exchanger (150) to ensure heat transfer between the first line (110) and the second line (120). It is a system (200) to detect; a first temperature sensor for measuring the temperature of the liquid entering the first volume (151); (221) a second temperature sensor to measure the temperature of the liquid leaving the first volume (151); (222) a third temperature sensor to measure the temperature of the liquid entering the second volume (152); (231) a fourth temperature sensor to measure the temperature of the liquid coming out of the second volume (152); (232) a flow measuring means for measuring the mass flow of liquid in the first line (110) or central heating cycle (310); (240) a device arranged to take temperature and flow measurements from said first temperature sensor (221), said second temperature sensor (222), said third temperature sensor (231), said fourth temperature sensor (232) and said flow measurement means (240). containing the control unit (210), recording the temperature and flow measurements taken by said control unit (210) to a memory unit (212) by associating them with the time information when the measurements were taken; determine a heat transfer rate of the first volume (151) according to the measurements taken from the first temperature sensor (221), the second temperature sensor (222) and the flow measurement means (240) and a specific heat value; will determine a logarithmic average temperature difference for the heat exchanger (150) according to the measurements taken from the first temperature sensor (221), second temperature sensor (222), third temperature sensor (231) and fourth temperature sensor (232); Depending on the heat transfer area of the heat exchanger (150), determine a heat transfer coefficient according to said logarithmic average temperature difference and said heat transfer rate; being configured to periodically calculate said heat transfer coefficient and save it to said memory unit (212), the control unit will also - monitor the heat transfer coefficients, - depending on the recorded heat transfer coefficients through an aging model, when the heat transfer coefficient exceeds a first threshold value. It is configured to determine a useful life when the heat transfer coefficient exceeds a second threshold value. . It is a system (200) according to claim 1 and its feature is; The said aging model is a stochastic machine learning model trained with recorded heat transfer coefficients. . It is a system (200) according to claim 1 and its feature is; The control unit (210) is configured to determine the heat transfer coefficient by multiplying the flow measurement, the mentioned specific heat value and the difference of the temperature measurements taken from the first temperature sensor (221) and the second temperature sensor (222). . It is a system (200) according to claim 1 and its feature is; containing a user interface (260) controlled by the control unit (210); The control unit (210) is configured to monitor said lifetime on said user interface (260). . It is a system (200) according to claim 1 and its feature is; The control unit (210) is configured to give a warning signal when its lifetime exceeds a first lifetime threshold value. . It is a system (200) according to claim 1 and its feature is; The control unit (210) is configured to display the said warning signal on the user interface (260). . It is a water heater (100) containing a system (200) as in any of claims 1-6. . It is a system (200) according to claim 7 and its feature is; The mentioned water heater (100) is a combi boiler. . a first line (110) hydraulically connected to a central heating cycle (310) and a second line hydraulically connected to a domestic water line (320); (120) a heating cell (130) associated with the first line (110) to heat the liquid in the said first line (110); a first volume (151) hydraulically connected to the first line (110) and a second volume (152) hydraulically connected to said second line (120), provided between said first volume (151) and said second volume (152), at least The blockage in the first volume (151) of said heat exchanger (150) of a water heater (100) containing a heat transfer element (153) and a heat exchanger (150) to ensure heat transfer between the first line (110) and the second line (120). It is a method to detect and its feature is; by a control unit (210); -the temperature of the liquid in the first line and entering the first volume (151), the temperature of the liquid in the first line (110) and leaving the first volume (151), the mass flow rate of the liquid in the central heating cycle (310) and a specific heat value of the first volume (151). determining a logarithmic average temperature difference to determine the heat transfer rate - depending on the heat transfer area of the heat exchanger (150), determining a heat transfer coefficient according to said logarithmic average temperature difference and said heat transfer rate; recording the said heat transfer coefficient in the memory unit (212) depending on time - monitoring the heat transfer coefficient - when the heat transfer coefficient exceeds a first threshold value, a lifespan by the heat transfer coefficient exceeding a second threshold value, depending on the recorded heat transfer coefficients, through an aging model The determination is that the processing steps are configured to be performed. It is a method according to claim 9 and its feature is; The aforementioned aging model is a stochastic machine learning model trained with recorded heat transfer coefficients. It is a method according to claim 91 and its feature is; It is configured to give a warning signal when the lifetime exceeds a first lifetime threshold.