KR102310634B1 - Hot-water heating system with optimum flow rate and method for controlling the same - Google Patents

Abstract

The control method of the hot water heating system according to the present invention includes the steps of setting a target indoor temperature (Tt) for a heating zone, supplying hot water at a preset flow rate to a heating tube to start heating of the heating zone; Comparing the temperature (Tt) and the actual measured indoor temperature (Tp), and when the measured indoor temperature (Tp) does not reach the target indoor temperature (Tt), the measured indoor temperature (Tp) is higher than the target indoor temperature (Tt) Comparing with a low preset flow control start temperature (Tc), and when the measured indoor temperature (Tp) is equal to or greater than the flow control start temperature (Tc), the measured temperature difference (ΔTr) between the water supply temperature and the return water temperature is based on the preset temperature difference If the measured temperature difference (ΔTr) is within the temperature difference reference range, it is determined that the set flow rate is normal; If Tr) exceeds the temperature difference reference range, determining that the flow rate is insufficient.

Description

A hot water heating system having an optimal flow rate and a method for controlling the same

The present invention relates to a hot water heating system, and more particularly, to efficiently heat each heating zone by re-adjusting the flow rate of hot water supplied to each heating zone to an optimal flow rate according to the heating environment of each heating zone in the household. It relates to a hot water heating system and a control method therefor.

The heating system used in multi-unit houses or buildings, such as apartments, consists of individual heating in which heating water is heated by an independently installed boiler and then heating by using it, and heating water is heated by a separately installed external heat source. It can be divided into group heating that uses heating. In addition, collective heating can be further divided into central heating using a heat source such as a central boiler, and district heating using a heat source such as an external regional power plant.

In the case of district heating, which is widely applied to heating apartment houses, etc., the heat energy produced in the heat production facility (primary side) is supplied through the heat transport facility, and the hot water required for heating is produced through the heat exchanger. The produced hot water is supplied to each household in the apartment building using a pump. Then, the hot water supplied to each household transfers heat energy to each household, cools, and then returns to the heat exchanger through the return pipe to repeat the process of being heated.

In various hot water heating methods, an automatic heating control system is generally applied to each household. The automatic heating control system is an energy-saving heating system that can separately control the indoor temperature of each room by installing a separate temperature controller in each room. In the automatic heating control system, a hot water pipe is buried in each room, and when heating is not required, the valve of the hot water pipe is closed to prevent unnecessary energy wastage and reduce fuel costs.

Since there is a limit to raising the temperature of hot water in the hot water heating method, it is determined that an appropriate flow rate of hot water is supplied to each heating zone (room, living room, etc.) in the household at the design stage. However, depending on the environmental factors to which the household is exposed, for example, the direction of the building, the number of floors of the household, etc., the heating environment of the heating zone in each household is inevitably different. Therefore, it is very difficult to accurately predict the amount of heat dissipation (load) required for heating of each heating zone in the household at the design stage to determine the flow rate that can maintain the optimal heating efficiency.

Registered Patent Publication No. 1099779 (2011. 12. 28.)

The present invention has been devised in consideration of the above-mentioned points, and evaluates whether the hot water flow rate set to be supplied to each heating zone in the household at the design stage is appropriate, and to achieve optimal heating according to the heating environment of each heating zone. An object of the present invention is to provide a hot water heating system capable of resetting the flow rate of hot water supplied to each heating zone and a method for controlling the same.

Objects of the present invention are not limited to those described above, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

The control method of the hot water heating system according to the present invention for achieving the object as described above, a water supply pipe for supplying hot water, a return pipe for exchange of hot water, and the water supply pipe and the exchange pipe are connected to the heating of the household A heating tube disposed in the zone, a water supply thermometer for detecting the water supply temperature of the hot water passing through the water supply pipe, a return thermometer for detecting the return temperature of the hot water passing through the return pipe, and the indoor temperature of the heating zone In the control method of a hot water heating system comprising: an indoor thermometer for detecting; ), and supplying hot water at a preset flow rate to the heating tube to start heating of the heating zone; (b) acquiring the measured indoor temperature (Tp) of the heating zone through the indoor thermometer, and comparing the target indoor temperature (Tt) with the measured indoor temperature (Tp); (c) when the measured indoor temperature Tp does not reach the target indoor temperature Tt, the measured indoor temperature Tp is set lower than the target indoor temperature Tt. Flow control start temperature Tc comparing with; (d) If the measured indoor temperature (Tp) is equal to or greater than the flow control start temperature (Tc), the measured temperature difference (ΔTr) between the water supply temperature obtained through the water supply thermometer and the return water temperature obtained through the return water thermometer is determined in advance determining whether it is within a set temperature difference reference range; and (e) if the measured temperature difference ΔTr is within the temperature difference reference range, it is determined that the set flow rate is steady state, and if the measured temperature difference ΔTr is less than the temperature difference reference range, it is determined that the flow rate is excessive, and the measured temperature difference ( and determining that the flow rate is insufficient when ΔTr) exceeds the temperature difference reference range.

The control method of the hot water heating system according to the present invention, after the step (e), (f) when the measured temperature difference (ΔTr) is less than or exceeding the temperature difference reference range, the flow rate of the hot water supplied to the heating tube resetting; but, after step (f), the steps after step (b) may be repeated.

The reset flow rate of hot water in step (f) may be determined by the following equation.

(Qr: reset flow rate, Qp: current flow rate, △Tr: measured temperature difference, △Ti: preset reference temperature difference)

In the control method of the hot water heating system according to the present invention, after the step (c), (g) when the measured indoor temperature (Tp) does not reach the flow control start temperature (Tc), the heating of the heating zone is Comparing the heating operation time (Time_h) after the start with a preset reference time (Time_r); and (h) determining that the flow rate is insufficient when the heating operation time (Time_h) exceeds the reference time (Time_r).

In the control method of the hot water heating system according to the present invention, after step (h), (i) when the heating operation time (Time_h) exceeds the reference time (Time_r), the flow rate of hot water supplied to the heating tube resetting; but, after step (i), the steps after step (b) may be repeated.

The flow control start temperature Tc may be set to be 2 to 5 degrees lower than the target indoor temperature Tt.

The water supply thermometer may be a calorimeter connected to the water supply pipe to calculate the amount of heat of hot water supplied through the water supply pipe.

On the other hand, the hot water heating system according to the present invention for achieving the object as described above, a water supply pipe for supplying hot water; a return pipe for the return of hot water; a heating pipe connected to the water supply pipe and the return pipe and disposed in the heating zone of the household; a water supply thermometer for detecting the water supply temperature of the hot water passing through the water supply pipe; a water exchange thermometer for detecting the return temperature of the hot water passing through the return pipe; an indoor thermometer detecting the indoor temperature of the heating zone; and a heating control unit configured to receive a detection signal from the water supply thermometer, the return water thermometer, and the indoor thermometer, wherein the heating control unit sets a target indoor temperature (Tt) for the heating zone, and sets a target indoor temperature (Tt) for the heating tube in advance The heating of the heating zone is started by supplying hot water at a set flow rate, the actual measured indoor temperature (Tp) of the heating zone is obtained through the indoor thermometer, and the target indoor temperature (Tt) and the measured indoor temperature (Tp) are obtained. ), and when the measured indoor temperature Tp does not reach the target indoor temperature Tt, the flow rate control start temperature ( Tc), and when the measured indoor temperature (Tp) is equal to or greater than the flow control start temperature (Tc), the measured temperature difference (ΔTr ) is within a preset temperature difference reference range, if the measured temperature difference ΔTr is within the temperature difference reference range, it is determined that the set flow rate is normal, and if the measured temperature difference ΔTr is less than the temperature difference reference range, the flow rate is excessive , and if the measured temperature difference ΔTr exceeds the temperature difference reference range, it is determined that the flow rate is insufficient.

In addition, when the measured indoor temperature (Tp) does not reach the flow control start temperature (Tc), the heating control unit sets a preset reference time (Time_r) for a heating operation time (Time_h) after the heating of the heating zone is started. ), when the heating operation time (Time_h) exceeds the reference time (Time_r), it can be determined that the flow rate is insufficient.

When the heating operation time (Time_h) exceeds the reference time (Time_r) and it is determined that the flow rate is supplemented, the heating control unit resets the flow rate of hot water supplied to the heating pipe, but the reset flow rate of hot water is determined by the following formula can

(Qr: reset flow rate, Qp: current flow rate, △Tr: measured temperature difference, △Ti: preset reference temperature difference)

In addition, the heating control unit, but reset the flow rate of the hot water supplied to the heating tube when the measured temperature difference (ΔTr) is less than or exceeding the temperature difference reference range, the reset flow rate of the hot water may be determined by the following equation.

(Qr: reset flow rate, Qp: current flow rate, △Tr: measured temperature difference, △Ti: preset reference temperature difference)

According to the present invention as described above, it can be reasonably evaluated whether the flow rate of hot water set to be supplied to each heating zone within the household is appropriate.

In addition, it is possible to find and reset the optimal flow rate of hot water required for each heating zone so that optimal heating can be achieved according to the heating environment of each heating zone.

Accordingly, efficient heating operation is possible, energy waste can be reduced, and heating costs can be reduced.

Effects of the present invention are not limited to those described above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

1 is a configuration diagram schematically showing a hot water heating system according to an embodiment of the present invention.
2 is a flowchart illustrating a control method of a hot water heating system according to an embodiment of the present invention.
3 is a configuration diagram schematically showing a hot water heating system according to another embodiment of the present invention.
4 is a configuration diagram schematically showing a hot water heating system according to another embodiment of the present invention.
FIG. 5 shows a part of the hot water heating system shown in FIG. 4 .

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those of ordinary skill in the art to which the present invention pertains can easily implement them. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.

In describing the present invention, the size or shape of the components shown in the drawings may be exaggerated or simplified for clarity and convenience of explanation.

In addition, terms specifically defined in consideration of the configuration and operation of the present invention may vary depending on the intention or custom of the user or operator. These terms should be interpreted as meanings and concepts consistent with the technical spirit of the present invention based on the contents throughout this specification.

In order to clearly explain the present invention, the description of parts not related to the technical idea of the present invention is omitted, and the same reference numerals are given to the same or similar elements throughout the specification.

In addition, in various embodiments, components having the same configuration will be described using the same reference numerals only in the representative embodiment, and only configurations different from the representative embodiment will be described in other embodiments.

Throughout the specification, when a part is "connected" to another part, it includes not only the case where it is "directly connected" but also the case where it is "indirectly connected" with another member interposed therebetween. In addition, when a part "includes" a certain component, this may mean further including other components rather than excluding other components unless otherwise stated.

1 is a configuration diagram schematically showing a hot water heating system according to an embodiment of the present invention.

As shown in the drawing, the hot water heating system 100 according to an embodiment of the present invention includes a water supply pipe 110 , a water supply header 120 connected to the water supply pipe 110 , and a water supply header 120 . The plurality of heating tubes 130 , the return header 140 connected to the plurality of heating tubes 130 , the return tube 150 connected to the return header 140 , and hot water supplied to the heating tube 130 . A water supply control valve 155 for controlling the flow rate for controlling the flow rate of the hot water returned through the water supply control valve 155, the return water control valve 160 for controlling the hot water returned from the heating pipe 130, and the return pipe 150 It includes a control valve assembly 200 and a heating control unit 300 . A water supply pipe 110 , a water supply header 120 , a heating pipe 130 , a return header 140 , a return pipe 150 , a water supply control valve 155 , and a return water control valve 160 , The flow control valve assembly 200 constitutes a household heating facility 105 for heating the heating zone 20 of the household 10 by receiving hot water from the hot water supply unit. This hot water heating system 100 evaluates whether the hot water flow rate set to be supplied to each heating zone 20 within the household 10 is appropriate, and each It is possible to reset the flow rate of the hot water supplied to the heating zone (20).

In this embodiment, a plurality of heating zones 20 provided in the household 10 are provided, and a plurality of heating tubes 130 are provided to correspond to the plurality of heating zones 20 , so that the water supply header 120 and the return header 140 are provided. ), and the water supply control valve 155 and the return water control valve 160 are respectively installed in plurality to correspond to the plurality of heating pipes 130 .

The water supply header 120 distributes the hot water supplied through the water supply pipe 110 to the plurality of heating pipes 130 , and the return header 140 collects the hot water that has passed through the plurality of heating pipes 130 , and the water exchange pipe 150 . ) is discharged. The water supply pipe 110 has a calorimeter 170 for measuring the calorific value or temperature of the hot water supplied into the household 10, and a water supply thermometer 175 for measuring the temperature of the hot water supplied through the water supply pipe 110 is installed. Here, the water supply thermometer 175 is not separately installed and may be replaced with a temperature sensor inside the calorimeter 170 . The temperature of the hot water supplied through the water supply pipe 110 may be measured through a temperature sensor inside the calorimeter 170 or a separately installed water supply thermometer 175 and provided to the heating control unit 300 (hereinafter, in this specification, the temperature of the calorimeter) The sensor and the separately installed water supply thermometer are collectively referred to as the 'feed water thermometer').

A bypass pipe 180 is connected to the water supply pipe 110 . The bypass pipe 180 may connect the water supply pipe 110 and the flow control valve assembly 200 to bypass the hot water of the water supply pipe 110 to the flow control valve assembly 200 .

A plurality of heating pipes 130 are buried in each heating zone 20 so as to supply hot water to a plurality of heating zones 20 provided in each household 10 , and the hot water flows through the heating pipe 130 . Heating is made for the heating zone 20 . Here, the heating zone 20 may be a room, a living room, a kitchen, etc. provided in a household, and the size may be different. In addition, the length of the heating tube 130 buried in each heating zone 20 and the flow rate of hot water supplied to each heating zone 20 may be designed differently according to the size of the heating zone 20 . An indoor thermometer 185 for measuring the indoor temperature of the heating zone 20 is installed in the heating zone 20 .

A water supply control valve 155 is connected in the heating pipe 130 between the water supply header 120 and the heating zone 20 . The user may control the flow of hot water through the heating tube 130 by manipulating the water supply control valve 155 , or may manually adjust the flow rate of hot water supplied to the heating tube 130 .

A return control valve 160 and a return thermometer 190 are installed in the heating tube 130 between the heating zone 20 and the return header 140 . The return water control valve 160 serves to automatically adjust the flow rate of hot water flowing through the heating tube 130 . The return water control valve 160 is controlled by the heating control unit 300 , and each heating zone 20 through the heating tube 130 through the control of the opening degree of the heating tube 130 flow path by the return water control valve 160 . It is possible to control the flow rate of hot water supplied by The water exchange thermometer 190 measures the temperature of the hot water returned to the return header 140 through the heating zone 20 .

The flow control valve assembly 200 actively controls the return flow rate of the hot water returned through the return pipe 150 according to the pressure of the supplied hot water, the heating load, etc., thereby passing through the heating tube 130 in the household 10 . The flow rate of hot water can be adjusted.

The heating control unit 300 receives a detection signal from the calorimeter 170, the water supply thermometer 175, the indoor thermometer 185, the return water thermometer 190, etc., and operates the flow control valve assembly 200, etc. The heating operation of the heating equipment 105 may be controlled. The heating control unit 300 includes a temperature controller 400 installed in each heating zone 20 , and a main controller 500 . Heating control unit 300 considers the heating set temperature of the household, the temperature of the heating zone 20, the water supply temperature and the return temperature, etc., the optimal flow rate of hot water required to efficiently heat the corresponding heating zone 20 is supplied to the corresponding heating zone ( 20) so that the flow control valve assembly 200 can be controlled in real time. The temperature controller 400 may control the heating operation of the corresponding heating zone 20 , and the main controller 500 may integrally control the heating operation of the plurality of heating zones 20 .

In addition, the heating control unit 300 evaluates whether the flow rate of hot water set to be supplied to each heating zone 20 within the household 10 is appropriate, and each It is possible to reset the flow rate of the hot water supplied to the heating zone (20).

Hereinafter, a control method of a hot water heating system for evaluating whether the flow rate of hot water set to be supplied to each heating zone 20 is appropriate, and resetting the flow rate of hot water supplied to each heating zone 20 will be described.

The control method of the hot water heating system according to an embodiment of the present invention is as shown in FIG. 2 .

First, the set flow rate of hot water is evaluated and a target indoor temperature (Tt) for the target heating zone 20 to be reset is set, and hot water is supplied to the heating pipe 130 of the corresponding heating zone 20 at a preset flow rate. to start heating of the heating zone 20 (S11).

In this embodiment, the temperature of the hot water supplied through the water supply pipe 110 is 50 degrees, the current indoor temperature of the heating zone 20 to be evaluated is 10 degrees, and the target indoor temperature Tt is 25 degrees, for example. Explain.

Next, the heating control unit 300 acquires the measured indoor temperature Tp of the corresponding heating zone 20 through the indoor thermometer 185, and compares the target indoor temperature Tt with the measured indoor temperature Tp ( S12).

When the measured indoor temperature (Tp) is equal to or greater than the target indoor temperature (Tt), since sufficient heating has already been performed, the heating control unit 300 closes the flow rate control valve 200 to stop heating (S13).

When the measured indoor temperature Tp does not reach the target indoor temperature Tt, the heating control unit 300 sets the measured indoor temperature Tp to a preset flow control start temperature Tc lower than the target indoor temperature Tt. Compare (S14). The flow control start temperature Tc is a temperature for starting flow control of the hot water supplied to the heating zone 20 in order to match the measured indoor temperature Tp to the target indoor temperature Tt.

In a typical hot water heating, the hot water supplied to the heating zone 20 heats the floor structure of the heating zone 20 so that the heating zone 20 heats the indoor air. That is, the indoor air of the heating zone 20 is heated by the heat of the floor structure heated by the hot water, and even if the hot water supply is stopped, the indoor temperature of the heating zone 20 rises due to the heat of the floor structure. As described above, due to the characteristics of hot water heating, even if the supply of hot water is stopped while the current indoor temperature is slightly lower than the target temperature, the indoor temperature can be raised to the target temperature. Therefore, when the measured indoor temperature (Tp) reaches a preset flow control start temperature (Tc) lower than the target indoor temperature (Tt), the flow rate of the hot water supplied to the heating zone 20 must be adjusted. can be adjusted to the target room temperature (Tt).

Here, the flow control start temperature Tc may be set lower than the target indoor temperature Tt by a predetermined temperature, for example, by 2 to 5 degrees. If the flow control start temperature (Tc) is set equal to 25 degrees, which is the target indoor temperature (Tt), or when the flow control start temperature (Tc) is set to about 24 degrees close to the target indoor temperature (Tt) of 25 degrees, the measured indoor temperature If the supply of hot water to the heating zone 20 is stopped or reduced when the temperature Tp reaches the flow control start temperature Tc, the indoor temperature of the heating zone 20 is 25 degrees, which is the target indoor temperature Tt. It can be overheated.

On the other hand, when the flow control start temperature Tc is set excessively lower than the target indoor temperature Tt (for example, 18 degrees lower than 7 degrees), the measured indoor temperature Tp reaches the flow control start temperature Tc. When the hot water supply to the heating zone 20 is stopped or reduced, it is easy for the indoor temperature of the heating zone 20 to not reach the target indoor temperature Tt of 25 degrees.

Here, the flow control start temperature Tc may be variously set in consideration of the size of the heating zone, the surrounding environment, the target indoor temperature, and the like.

When the actual measured indoor temperature (Tp) is equal to or higher than the properly set flow control start temperature (Tc), the heating control unit 300 is the water supply temperature obtained through the calorimeter 170 or the water supply thermometer 175 and the water return thermometer 190 through The measured temperature difference ΔTr between the obtained return water temperatures is calculated, and it is determined whether the measured temperature difference ΔTr is within a preset temperature difference reference range (S15).

Here, the preset temperature difference reference range may be appropriately set based on an ideal temperature difference. In a typical hot water heating system, it is known that the temperature of the supplied hot water is 50 degrees and the temperature of the return hot water is 35 degrees as ideal operating conditions. Accordingly, the ideal temperature difference between the water supply temperature and the return water temperature is 15 degrees, and the temperature difference reference range may be set based on the ideal temperature difference of 15 degrees. For example, the temperature difference reference range may be determined as an appropriate temperature range according to the heating environment of the corresponding household 10, such as 13 degrees to 17 degrees, or 14 degrees to 16 degrees.

When the measured temperature difference ΔTr is within the temperature difference reference range, the heating control unit 300 may determine the set flow rate of hot water supplied to the corresponding heating zone 20 as a normal state (S16). The determination result of the heating control unit 300 may be displayed on the display of the main controller 500 or provided to the manager terminal.

On the other hand, when the measured temperature difference ΔTr is a value out of the temperature difference reference range, the heating control unit 300 may determine the set flow rate of hot water supplied to the corresponding heating zone 20 as an abnormal state. In this case, the heating control unit 300 determines whether the measured temperature difference ΔTr is less than or greater than the temperature difference reference range (S17), and resets the flow rate of hot water supplied to the corresponding heating zone 20 according to the determination result.

That is, when the measured temperature difference ΔTr is less than the temperature difference reference range, the heating control unit 300 determines that the flow rate of hot water supplied to the heating zone 20 is excessive and resets the flow rate (S18). The fact that the measured temperature difference (ΔTr) is less than the temperature difference reference range means that the water exchange temperature is relatively high. The high return temperature means that the hot water supplied to the heating zone 20 does not sufficiently dissipate heat in the heating zone 20 and exits the heating zone 20, which indicates that the hot water is being supplied excessively. Therefore, in this case, the heating control unit 300 resets the flow rate so that the flow rate of the hot water supplied to the heating zone 20 is reduced.

On the other hand, when the measured temperature difference ΔTr exceeds the temperature difference reference range, the heating control unit 300 determines that the flow rate of hot water supplied to the heating zone 20 is insufficient and resets the flow rate (S19). The fact that the measured temperature difference (ΔTr) exceeds the temperature difference reference range indicates that the return temperature is relatively low. That the return temperature is low means that the hot water supplied to the heating zone 20 has passed through the heating zone 20 while dissipating a relatively large amount of heat from the heating zone 20, which indicates that the amount of hot water is insufficient. Therefore, in this case, the heating control unit 300 resets the flow rate to increase the flow rate of the hot water supplied to the heating zone (20).

At this time, the heating control unit 300 may determine the reset flow rate of the hot water using the following equation.

Here, Qr is a reset flow rate, Qp is a current flow rate, ΔTr is a measured temperature difference, and ΔTi is a preset reference temperature difference. Here, the reference temperature difference ΔTi may be set to an appropriate value according to the heating environment of the household 10 . As described above, since the ideal temperature difference between the water supply temperature and the return water temperature in a typical hot water heating system is known to be 15 degrees, the reference temperature difference (ΔTi) may be set to 15 degrees, or a temperature somewhat higher or lower than this.

By using the above formula, it is possible to reset the flow rate to decrease the flow rate in the case of excessive flow rate, which appears relatively low at the return water temperature. For example, if the reference temperature difference (ΔTi) is 15 degrees, the current flow rate (Qp) is 10 LPM, and the measured temperature difference is 12 degrees, the reset flow rate (Qr) calculated by the above formula is 8 LPM and the current flow rate (Qp) a more reduced value.

In addition, the flow rate can be reset to increase the flow rate by using the above formula in the case of an excessive flow rate appearing relatively high at the return water temperature. For example, if the reference temperature difference (ΔTi) is 15 degrees, the current flow rate (Qp) is 10 LPM, and the measured temperature difference is 18 degrees, the reset flow rate (Qr) calculated by the above formula is 12 LPM, and the current flow rate (Qp) a more increased value.

As such, after the flow rate of hot water supplied to the heating zone 20 is reset, the heating control unit 300 checks whether the flow rate is properly reset by performing the above-described steps again. And when it is determined that the reset flow rate is in a normal state, the hot water flow rate of the corresponding heating zone 20 is set to the reset flow rate.

On the other hand, when the reset flow rate is not in a normal state, the optimal hot water flow rate for the corresponding heating zone 20 may be found by repeating the above-described steps after resetting the hot water flow rate using the above formula.

When it is necessary to reset the flow rate of the hot water supplied to the heating zone 20 , the heating control unit 300 may adjust the flow rate by controlling the flow rate control valve assembly 200 . For example, when it is necessary to reduce the flow rate of hot water, the heating control unit 300 may reduce the flow rate of the hot water supplied to the heating zone 20 by reducing the opening amount of the flow control valve assembly 200 . And when it is necessary to increase the flow rate of hot water, the heating control unit 300 may increase the flow rate of the hot water supplied to the heating zone 20 by increasing the opening amount of the flow control valve assembly 200 .

On the other hand, in the step (S14) of comparing the measured indoor temperature (Tp) with the flow control start temperature (Tc), when the measured indoor temperature (Tp) does not reach the flow control start temperature (Tc), the heating control unit 300 is The heating operation time Time_h after the heating of the corresponding heating zone 20 is started is compared with a reference time Time_r (S20). Here, the reference time Time_r may be an average time required to increase the indoor temperature of the heating zone 20 to a target temperature in a normal heating operation state. The reference time Time_r may be appropriately set according to the outdoor temperature, the current indoor temperature, the target indoor temperature, the size of the heating zone, the supply hot water flow rate, and the like.

If the measured indoor temperature (Tp) does not reach the flow control start temperature (Tc) even after the reference time (Time_r) has elapsed after heating for the heating zone 20 is started, the heating zone 20 at the currently set hot water flow rate can be viewed as insufficient for heating. In this case, the heating control unit 300 determines that the flow rate is insufficient and resets the hot water flow rate to increase the flow rate of the hot water supplied to the corresponding heating zone 20 ( S21 ). In this case, the reset flow rate may be determined through the above-described formula or may be determined in various other ways.

After resetting the flow rate, the heating control unit 300 may find an optimal hot water flow rate for optimal heating of the corresponding heating zone 20 by repeating the above-described steps.

In this way, the process of evaluating the hot water flow rate set to be supplied to the heating zone 20, and resetting the flow rate of hot water is performed individually for each heating zone 20 in the household 10, or heating in the household 10 It may be performed collectively for the zone 20 .

Meanwhile, FIG. 3 is a configuration diagram schematically showing a hot water heating system according to another embodiment of the present invention.

The hot water heating system 600 shown in FIG. 3 includes a water supply pipe 110 , a water supply header 120 , a plurality of heating pipes 130 , a return header 140 , a return pipe 150 , and a water supply control valve. 155 , a return water control valve 160 , a flow control valve assembly 610 , and a heating control unit 300 . In the hot water heating system 600 , only the flow control valve assembly 610 is changed compared to the hot water heating system 100 described above. In the flow control valve assembly 200 of the hot water heating system 100 described above, the hot water of the water supply pipe 110 can be introduced through the bypass pipe 180, whereas the flow control valve assembly 610 of this embodiment is Such a function is omitted.

The hot water heating system 600 also evaluates the hot water flow rate set to be supplied to the heating zone 20, and the same method as described above for resetting the hot water flow rate may be used.

Meanwhile, FIG. 4 is a configuration diagram schematically showing a hot water heating system according to another embodiment of the present invention, and FIG. 5 is a view showing a part of the hot water heating system shown in FIG. 4 .

The hot water heating system 700 shown in FIGS. 4 and 5 is applied to a multi-storey apartment house, and a plurality of household heating equipment 105 installed in a plurality of households 10 constituting the apartment house, respectively, and each household heating equipment It includes a hot water supply unit 740 for supplying hot water to the 105 and an integrated control unit 720 . Here, the household heating equipment 105 is the same as that shown in FIG. The integrated control unit 720 controls the heating operation of each household heating equipment 105 together with the temperature controller 400 and the main controller 500 of each household heating equipment 105, and the heating zone ( 20) evaluates the flow rate of hot water set to be supplied, and a heating control unit 710 that resets the flow rate of hot water may be configured.

The integrated control unit 720 may be installed in the machine room 730 to be managed by an administrator. In the machine room 730 , in addition to the integrated control unit 720 , a hot water supply unit 740 for supplying hot water, a display 750 capable of displaying various information, and hot water heated by the hot water supply unit 740 are supplied to each household 120 . ) A pump 760 for pressure feeding may be installed.

In this hot water heating system 700, the integrated control unit 720 receives an identification number for each of the plurality of households 10, and evaluates the hot water flow rate set to be supplied to the heating zone 20 of each household 10, The flow rate of hot water can be reset. That is, the integrated control unit 720 communicates with the main controller 500 of each household 10 to control the flow control valve assembly 200 of each household heating equipment 105, and is required from each household heating equipment 105. By receiving the information, it is possible to evaluate the flow rate of hot water set to be supplied to the heating zone 20 of each household 10 in the same way as described above, and reset the flow rate of hot water.

Although preferred examples of the present invention have been described above, the scope of the present invention is not limited to the forms described and illustrated above.

For example, when the hot water flow rate supplied to the heating zone 20 is not in a normal state, in addition to the method of using the above-described formula as a method of determining the reset flow rate for the corresponding heating zone 20, various other flow rate readjustment methods are can be used

In addition, as a method of re-adjusting the flow rate for the heating zone 20 , various other methods other than a method using a flow control valve assembly installed in the return pipe 150 may be used.

While the present invention has been shown and described in connection with preferred embodiments for illustrating the principles of the present invention, the present invention is not limited to the construction and operation as so shown and described, and is not intended to be limited by the appended claims. It will be understood by those skilled in the art that many changes and modifications can be made to the present invention without departing from the spirit and scope of the present invention.

100, 600, 700: hot water heating system 105: household heating equipment
110: water supply pipe 120: water supply header
130: heating tube 140: return header
150: return pipe 155: water supply control valve
160: return water control valve 170: calorimeter
175: water supply thermometer 180: bypass pipe
185: room thermometer 190: water exchange thermometer
200, 610: flow control valve assembly 300, 710: heating control unit
400: thermostat 500: main controller
720: integrated control unit 730: machine room
740: hot water supply 750: display
760: pump

Claims (14)

A water supply pipe for supplying hot water, a return pipe for returning hot water, a heating pipe connected to the water supply pipe and the return pipe and disposed in the heating zone of the household, and water supply for detecting the water supply temperature of the hot water passing through the water supply pipe A thermometer, a water exchange thermometer for detecting the return temperature of the hot water passing through the return pipe, an indoor thermometer for detecting the indoor temperature of the heating zone, and a detection signal from the water supply thermometer, the return water thermometer, and the indoor thermometer In the control method of a hot water heating system comprising a heating control unit to receive,
(a) setting a target indoor temperature (Tt) for the heating zone, and supplying hot water at a preset flow rate to the heating pipe to start heating the heating zone;
(b) acquiring the measured indoor temperature (Tp) of the heating zone through the indoor thermometer, and comparing the target indoor temperature (Tt) with the measured indoor temperature (Tp);
(c) when the measured indoor temperature Tp does not reach the target indoor temperature Tt, the measured indoor temperature Tp is set lower than the target indoor temperature Tt. Flow control start temperature Tc comparing with;
(d) If the measured indoor temperature (Tp) is equal to or greater than the flow control start temperature (Tc), the measured temperature difference (ΔTr) between the water supply temperature obtained through the water supply thermometer and the return water temperature obtained through the return water thermometer is determined in advance determining whether it is within a set temperature difference reference range; and
(e) If the measured temperature difference (ΔTr) is within the temperature difference reference range, it is determined that the set flow rate is normal, and if the measured temperature difference (ΔTr) is less than the temperature difference reference range, the flow rate is excessive, and the measured temperature difference (Δ If Tr) exceeds the reference range of the temperature difference, determining that the flow rate is insufficient.
According to claim 1,
After step (e),
(f) when the measured temperature difference (ΔTr) is less than or exceeding the temperature difference reference range, resetting the flow rate of the hot water supplied to the heating tube;
3. The method of claim 2,
The reset flow rate of hot water in step (f) is a control method of a hot water heating system, characterized in that determined by the following equation.

(Qr: reset flow rate, Qp: current flow rate, △Tr: measured temperature difference, △Ti: preset reference temperature difference)
4. The method of claim 3,
After the step (f), the control method of the hot water heating system, characterized in that by repeating the steps after the step (b).
According to claim 1,
When the measured indoor temperature Tp does not reach the flow control start temperature Tc by comparing the measured indoor temperature Tp with the flow control start temperature Tc in step (c), the ( A method of controlling a hot water heating system, characterized in that the following steps (g) and (h) are performed instead of step d) and step (e).
(g) comparing the heating operation time (Time_h) after the heating of the heating zone is started with a preset reference time (Time_r); and
(h) determining that the flow rate is insufficient when the heating operation time (Time_h) exceeds the reference time (Time_r).
6. The method of claim 5,
After step (h),
(i) when the heating operation time (Time_h) exceeds the reference time (Time_r), resetting the flow rate of the hot water supplied to the heating pipe; Control method of a hot water heating system comprising the.
7. The method of claim 6,
The reset flow rate of hot water in step (i) is a control method of a hot water heating system, characterized in that determined by the following equation.

(Qr: reset flow rate, Qp: current flow rate, △Tr: measured temperature difference, △Ti: preset reference temperature difference)
delete According to claim 1,
The control method of the water heating system, characterized in that the flow control start temperature (Tc) is set to 2 ~ 5 degrees lower than the target indoor temperature (Tt).
According to claim 1,
The water supply thermometer is a control method of a hot water heating system, characterized in that the calorimeter is connected to the water supply pipe to calculate the amount of heat of the hot water supplied through the water supply pipe.
water supply pipe for hot water supply;
a return pipe for the return of hot water;
a heating pipe connected to the water supply pipe and the water exchange pipe and disposed in the heating zone of the household;
a water supply thermometer for detecting the water supply temperature of the hot water passing through the water supply pipe;
a water exchange thermometer for detecting the return temperature of the hot water passing through the return pipe;
an indoor thermometer detecting the indoor temperature of the heating zone; and
A heating control unit for receiving a detection signal from the water supply thermometer, the water exchange thermometer, and the indoor thermometer;
The heating control unit,
Setting a target indoor temperature (Tt) for the heating zone, supplying hot water at a preset flow rate to the heating tube to start heating of the heating zone,
obtaining the measured indoor temperature (Tp) of the heating zone through the indoor thermometer, and comparing the target indoor temperature (Tt) with the measured indoor temperature (Tp);
When the measured indoor temperature (Tp) does not reach the target indoor temperature (Tt), the measured indoor temperature (Tp) is compared with a flow control start temperature (Tc) preset lower than the target indoor temperature (Tt), and ,
If the measured indoor temperature (Tp) is equal to or greater than the flow control start temperature (Tc), the measured temperature difference (ΔTr) between the water supply temperature obtained through the water supply thermometer and the return water temperature obtained through the return water thermometer is a preset temperature difference reference to determine whether it is within the range
If the measured temperature difference ΔTr is within the temperature difference reference range, it is determined that the set flow rate is normal, and if the measured temperature difference ΔTr is less than the temperature difference reference range, it is determined that the flow rate is excessive, and the measured temperature difference ΔTr is Hot water heating system, characterized in that if the temperature difference exceeds the reference range, it is determined that the flow rate is insufficient.
12. The method of claim 11,
The heating control unit,
When the measured indoor temperature (Tp) does not reach the flow control start temperature (Tc), the heating operation time (Time_h) after the heating of the heating zone is started is compared with a preset reference time (Time_r), the heating Hot water heating system, characterized in that when the operation time (Time_h) exceeds the reference time (Time_r), it is determined that the flow rate is insufficient.
13. The method of claim 12,
The heating control unit,
When the heating operation time (Time_h) exceeds the reference time (Time_r) and it is determined that the flow rate is supplemented, the flow rate of hot water supplied to the heating pipe is reset, but the reset flow rate of hot water is determined by the following formula hot water heating system.

(Qr: reset flow rate, Qp: current flow rate, △Tr: measured temperature difference, △Ti: preset reference temperature difference)
12. The method of claim 11,
The heating control unit,
When the measured temperature difference (ΔTr) is less than or exceeding the temperature difference reference range, resetting the flow rate of hot water supplied to the heating tube, but the reset flow rate of hot water is determined by the following equation.

(Qr: reset flow rate, Qp: current flow rate, △Tr: measured temperature difference, △Ti: preset reference temperature difference)

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