KR100857377B1 - Difference heating system by return hot water temperature and time control - Google Patents

Abstract

A zonal heating system is provided to equip a heating system for getting same indoor air temperature and a heating system for getting higher floor temperature at a certain zone of the floor. In addition, expense for heating is reduced by having two separate heating systems. A zonal heating system has a first heat piping system(P1) for heating a first zone(Z1) which is a non-residential zone of a room, a second heat piping system(P2) for heating a second zone(Z2) which is a main residential zone of a room, a first valve(V1) for adjusting amount of hot water supply to the first zone, a second valve(V2) for adjusting amount of hot water supply to the second zone, a temperature controller(RC1) which measures and controls air temperature of the first zone and the second zone while controlling floor temperature of the second zone, a first temperature sensor(W1) which senses temperature of returned hot water after circulating the first zone, a second temperature sensor(W2) which senses temperature of returned hot water after circulating the second zone, a first and a second proportional control valve which control opening of heating valves, and a boiler(BCP) which is electrically connected to the valve controller and controls a burner and a circulator pump(P) individually.

Description

Difference Heating System by Return Hot water temperature and Time control}

The present invention relates to a differential heating system, in particular, in order to provide a more comfortable heating temperature in the area where the occupants mainly live (resident) during heating the house by dividing the space of the room to heat the air temperature control in the non-resident area The residential area relates to a differential heating system that enables independent heating of the lower neck for floor temperature control.

In general, home heating uses an even heating floor radiant heating method, which only controls indoor air temperature, which does not provide the thermal comfort that can be felt by the human body directly to the actual residents who are sitting and not sitting. It is true.

A general equal heating system is a heating system that forms and maintains a uniform floor temperature in all areas of a floor, and is heated by whether or not the indoor air temperature set by a resident is reached. Therefore, regular equal heating is strictly speaking indoor air heating. In other words, it is a heating method that uses the concept of convection heating of Western standing culture, not the heating of a sitting floor that is suitable for the situation of Koreans. Therefore, when you want to raise the surface temperature of the floor by using such equal heating, the temperature of the indoor air must be increased rapidly. In this case, if the heating is done for a certain period of time, the floor temperature will reach a satisfactory high temperature, but as a result of the heating evenly over all areas of the room, the air temperature 20 ~, which is the pleasant condition of indoor air, It will be out of 40 ~ 60% of relative humidity of 25 ℃ and it will be uncomfortable indoor air condition. In addition, such equal heating requires a lot of fuel, the heating cost is rapidly increased has a disadvantage in that an economic burden on the user.

In order to overcome the problem of equal heating, Patent Registration No. 0811080, "floor radiant heating system capable of separate heating of upper and lower necks," is divided into two areas by dividing the floor of the indoor space into two areas. By installing independent piping and connecting to the hot water distributor, the amount of heating water supplied to the lower and upper neck pipes is adjusted so that the floor temperature of the lower and upper necks is different so that all members of the family who have different desired temperatures are different. Satisfaction can be obtained and the heating cost can be saved.

However, the divided heating method is limited to simply making a difference between the lower and upper neck floor temperatures, and each floor is not provided with practical heating conditions, that is, the absence of independent operation of the indoor air temperature and the floor temperature desired by the occupant. Temperature control values (lower and upper necks) reduce individual control over pleasant air temperature maintenance conditions, and the inverse of air temperature and floor temperature, i.e., the lower neck provides the floor with an appropriate floor temperature, When the temperature is too low, or at any temperature, the indoor air temperature may escape the comfort temperature of the occupant, and may have the same problem as that of even heating.

The present invention has been made to solve the above problems, an object of the present invention is to provide a uniform heating function for obtaining a uniform indoor air temperature when heating the house and a differential heating function for obtaining a high floor temperature in a part of the indoor floor. By providing a heating system provided together, the user can select the heating of the desired heating evenly and differential heating.

Another object of the present invention is to provide a more comfortable heating in the area where the resident mainly lives in the space of the room during the heating of the house, in the lower neck and living habits, which is the area where the resident mainly sitting and sleeping life Divided into the upper neck, which is a relatively less used area, the bottom temperature of the lower neck is heated to the same temperature as the traditional hanok gudeul heating, and the upper neck and indoor air temperature are heated to a lower temperature than the lower neck temperature. Independently controlling the top and bottom temperature of the upper neck to provide a comfortable temperature for the occupants.

Still another object of the present invention is to reduce fuel costs due to heating by independently heating the floor and the indoor air temperature.

Differential heating system according to the present invention, the first heating pipe for heating the first heating zone; Second heating piping for heating the second heating zone; A first heating valve and a second heating valve configured to adjust an amount of hot water supplied to the first heating pipe and the second heating pipe, respectively; A temperature controller for measuring and controlling air temperatures of the first heating zone and the second heating zone and controlling the bottom temperature of the second heating zone; A first return temperature sensor and a second return temperature sensor for sensing a temperature of hot water returned after circulating the first heating pipe and the second heating pipe; Proportional control of the opening degree of the first heating valve and the second heating valve according to the measured air temperature and the respective return temperatures measured by the first return temperature sensor and the second return temperature sensor A valve control unit; And a hot water boiler electrically connected to the valve control unit and individually controlling burner operation and circulation pump operation, wherein the first heating zone is a non-resident area of one room space, and the second heating zone is one The residential area of the room is characterized by its configuration.

The differential heating system performs differential heating or equal heating by independently controlling the indoor air temperature and the floor temperature of the first heating zone and the second heating zone by a function of selecting a temperature controller. That is, it is possible to independently differential heating or even heating to heat both the first and second heating zones.

As described above, the differential heating system according to the present invention can independently control the indoor air temperature and the floor temperature of the lower neck, which is the main area of the residence, and provide a high temperature of the lower neck, such as heating the traditional hanok, to provide residents with a comfortable heating feeling. Can provide.

In addition, the differential heating system according to the present invention, by selectively heating only the residential area of the interior space, it is possible to reduce the fuel required for heating can reduce the heating cost.

In addition, the heating quantity is reduced by heating mainly in the residential area, and the initial investment cost and resource saving effect can be obtained by reducing the load capacity of the heat source equipment, the capacity of the conveying equipment, and reducing the main pipe diameter.

Differential heating system according to the present invention, the first heating pipe for heating the first heating zone; Second heating piping for heating the second heating zone; A first heating valve and a second heating valve configured to adjust an amount of hot water supplied to the first heating pipe and the second heating pipe, respectively; A temperature controller for measuring and controlling air temperatures of the first heating zone and the second heating zone, and controlling a bottom temperature of the second heating zone; A first return temperature sensor and a second return temperature sensor for sensing a temperature of hot water returned after circulating the first heating pipe and the second heating pipe; Proportional control of the opening degree of the first heating valve and the second heating valve according to the measured air temperature and the respective return temperatures measured by the first return temperature sensor and the second return temperature sensor A valve control unit; And a hot water boiler electrically connected to the valve control unit and individually controlling burner operation and circulation pump operation, wherein the first heating zone is a non-resident area of one room space, and the second heating zone is one The residential area of the room is characterized by its configuration.

In the differential heating system according to the present invention, the first heating pipe return temperature and the second heating pipe return temperature detected by the first return temperature detecting sensor and the second return temperature detecting sensor are transmitted to a valve controller, and the valve The controller controls the opening and closing operations of the first heating valve and the second heating valve according to the temperature of the hot water being returned.

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in more detail.

1 is a system configuration for explaining the differential heating system according to the present invention. The differential heating system according to the present invention divides a plan in a house into a first heating zone that is a non-residential area and a second heating zone that is a residential area, and only controls the indoor air temperature Ti1 in the first heating zone that is a non-residential area. In addition, in the second heating zone, which is the residential area, the floor temperature of 42 to 47 ° C. is independently controlled to maintain a comfortable indoor air temperature and floor temperature.

To this end, hot water supplied from a hot water boiler is supplied to the bottoms of the first heating zone Z1 and the second heating zone Z2 to circulate the first heating zone Z1 and the second heating zone Z2, respectively. After heating, the first heating pipe (P1) and the second heating pipe (P2) are installed independently of each other so that the water can be returned.

Installed between the first heating valve V1 and the second heating pipe installed between the first heating pipe P1 to adjust and control the heating flow rate of the heating pipes P1 and P2 of the heating zones Z1 and Z2. A motor (not shown) is connected to the second heating valve V2 to open and close the valve, respectively, and heat and return the first heating zone and the second heating zone through the first and second heating pipes P1 and P2, respectively. The first and second return temperature sensor (W1, W2) for detecting the temperature of the hot water, respectively, is installed in the first, second heating valve body, and sends a detection signal to the valve controller, respectively.

In addition, the temperature controller RC1 installed for controlling the indoor air temperature Ti1 and the floor temperature of the first heating zone Z1 and the second heating zone Z2 has two heating functions. Function and differential heating function to achieve high floor temperature. The uniform heating function is the indoor air temperature controlled heating operation for the first and second heating zones, and the differential heating function is the indoor air temperature set by the occupant in the first heating zone (Z1) and the second heating zone (Z2). It is a heating function that independently forms and maintains the high floor temperature of the lower neck.

The inside of the temperature controller RC1 includes an indoor air temperature sensor S1 for measuring the indoor temperature, and blocks the heating valves (first and second valves) when the room temperature reaches the set indoor air temperature Ti1. The signal is sent to the valve control unit CP.

The valve control unit CP is connected to the heating valves (first and second valves) and the temperature controller RC1 of each heating zone (first and second zones) by an electrical signal, and is connected to the hot water boiler by data communication. .

Control functions of the valve control unit (CP) include indoor air temperature heating control, return temperature and flow rate control, lower neck heating time control (heating mode and stop mode), and outside air compensation return temperature control for indirect floor temperature control in lower neck heating stop mode. Included.

The indoor air temperature heating control, which is the first control function of the valve control unit CP, starts heating when the indoor temperature measured by the indoor air temperature sensor S1 in the temperature controller RC1 is lower than the value set by the occupant. When the measured value reaches the set value, the heating is stopped.

The second control function of the valve control unit CP, the return temperature and flow rate control, is applied to the return temperature and the occupants respectively detected by the return temperature sensing sensors W1 and W2 installed between the heating valves V1 and V2 and the distributor D, respectively. The heating valves (first and second valves) are driven to proportionally control the heating flow rate by the return temperature value Tr set by the control unit.

The lower neck heating time control, which is the third control function of the valve control unit CP, is performed by heating the indoor air temperature in the first heating zone Z1 and forcibly through the second heating pipe P2 in the second heating zone Z2. It is to raise the floor temperature to the average 42 ~ 47 ℃ that residents want by heating and stopping heating for a certain time from the hot water boiler.

The external control return temperature control, which is the fourth control function of the valve control unit CP, controls the temperature of the water in the pipe P2 to return the temperature of the water in the second heating pipe P2 to continuously maintain the lower floor temperature, which has risen to an average of 42 to 47 ° C. It is an indirect control function for increasing the descending floor temperature by analyzing the correlation between the measured water temperature measured by the sensor W2 and the floor temperature of the second heating zone Z2. By comparing the measured return temperature with the set outside compensation return temperature (Tro), if the measured return temperature is greater than the outside compensation return temperature (Tro), the heating standby is repeated for the entire heating stop time (St), and the measured return temperature If the temperature is less than the air compensation return temperature (Tro) is to start the heating. In addition, since the outside air return and return temperature control is a heating water circulation operation for maintaining the bottom temperature of the second heating zone, the flow rate value or the valve opening value Vo of the second heating valve V2 is the second heating zone during the circulation pump operation. In case of operating only (Z2) alone, it has the highest fully open value, and when heating the first heating zone (Z1) or other room other than the second heating zone (Z2), the minimum flow rate or minimum valve opening value (Vo) is set. Have If the heating water is circulated in the first heating zone or another room (burner operation) and the heating water is circulated in the second heating zone Z2, the second heating zone is used when the circulation flow rate is large or the valve opening value is too large. In addition, since the heating is supplied, and the overheated lower neck temperature is obtained outside the target temperature of 42 to 47 ° C., the first heating zone or the other room heating operation is performed in the second heating zone (Z2) when controlling the outside air compensation return temperature. Circulate operation separately from single operation.

In addition, when the measured return temperature is smaller than the set outside compensation return temperature Tro, heating is started to completely open the valve opening of the second heating valve V2. Detailed functions will be described in more detail with reference to FIG. 3.

On the other hand, the first heating pipe (P1) and the second heating pipe (P2) has an inlet and hot water outlet inlet, respectively, each of the inlet and outlet is connected to the first and second distributor (D) It is connected to the valves V1 and V2.

The distributor (D) includes a supply pipe for receiving hot water supplied from the hot water boiler and dividing the water into the respective zones of the room, and a return pipe for heating the hot water boiler and returning the hot water back to the hot water boiler. Detailed description of the heating equipment is omitted.

Unlike a general hot water boiler which performs burner operation and a circulation pump operation at the same time, in the differential heating system according to the present invention, the hot water boiler has a differential heating function, and the differential heating function controls the burner operation function and the circulation pump operation function separately. It is characterized by. That is, when the heating stop signal is input from the valve control unit CP, the burner does not operate, and the circulating pump is independently operated by the external compensation water return temperature control, and the circulating pump of the hot water boiler is fixed for the entire stop time St. It is operated by data communication with the valve control unit CP every time (for 2 minutes every 15 minutes). In addition, as soon as the heating start signal is input from the valve control unit CP to the boiler, the operation is switched from the circulating pump operation mode to the heating mode to start the burner operation and perform the heating operation.

2 is a flow chart for explaining the function of the valve control unit CP of the differential heating system according to the present invention. Differential heating method according to the present invention is to indicate the operation of the valve control unit (CP) that operates in accordance with the uniform heating operation mode or the lower neck heating operation mode in the temperature controller (RC1).

If the occupant selects the lower neck heating operation mode among the uniform heating and the lower neck heating (differential heating) operation mode in the temperature controller, the indoor air temperature for controlling the indoor air temperature in the first heating zone (Z1) according to the value set by the occupant The heating operation starts, and the lower heating operation for adjusting the floor temperature is started in the second heating zone Z2 according to the set value of the valve control unit CP.

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As shown in FIG. 3, when the heating mode of the temperature controller RC1 is in the uniform heating mode, the indoor air temperature can be uniformly adjusted to the desired temperature of the occupant regardless of the first zone and the second zone. have. That is, when the measured air temperature is lower than the set value (Ti1), the boiler is operated and the heating valve is opened to the maximum to heat the heating. When the measured air temperature is equal to the set value, the boiler output is shut off and the heating valve is turned off. Keep heating to a minimum.

In addition, the occupant may switch the temperature controller RC1 from the uniform heating mode to the differential heating mode to perform the differential heating of the room. If the indoor air temperature is unsatisfactory in the differential heating mode, the occupant may adjust the indoor air temperature to the desired temperature, and select the lower neck heating function to adjust the lower neck temperature for the second zone according to the valve control (CP) setting value. It may be.

In the differential heating operation mode, the first heating zone is heated for controlling indoor air temperature, and the second heating zone is heated for controlling the bottom neck temperature.

In the differential heating operation mode, the first heating zone Z1 is heating for controlling the indoor air temperature, and compares the indoor air temperature measured by the indoor air temperature sensor S1 with the set indoor air temperature set value, and is currently indoor. Heating is performed during the indoor air heating time (Wt) corresponding to the air temperature. When the indoor air temperature of one room measured by the indoor air temperature sensor S1 of the temperature controller RC1 reaches the air temperature set value Ti1 set by the occupant, a signal is sent from the indoor air temperature sensor S1. The received valve control unit CP closes the first heating valve V1 of the first heating zone Z1 to stop the supply of heating water to the first heating pipe P1. In addition, when the measured indoor air temperature falls below the air temperature set value Ti1, the valve controller CP causes the first heating valve V1 to be opened to repeat the operation of supplying the heating water.
As shown in Figure 4, the lower neck heating (differential heating) operation mode is composed of a primary differential heating operation mode and a secondary differential heating operation mode, the primary differential heating operation mode after returning from the outside, the appropriate lower neck temperature ( It means heating rapidly until it reaches an average of 42 ~ 47 ℃). Secondary heating mode refers to controlling heating periodically to continuously maintain the lower temperature of the proper temperature reached in the first differential heating mode. .
In each of the primary and secondary differential heating modes, the differential heating room air temperature (Ti2 = Ti1 + 5 ° C), return temperature (Tr), heating time (Wt), stop time (St), etc. are used as control parameters. In the differential heating stop mode, the outside compensation water return temperature (Tro) and the heating water circulation time (Rt) are used as parameters.

In the differential heating operation mode, the lower neck heating function for the second heating zone starts the primary differential heating operation when the measured indoor air temperature is lower than the set value Ti1, by the set primary differential heating time Wt1. The hot water boiler starts heating supply. When the return temperature measured by the return temperature detecting sensor W2 is lower than the return temperature set value Tr, the hot water boiler drives the motor under the control of the valve control unit CP to heat the heating valve (V2). ) To continue to supply hot water. When the return temperature measured by the return temperature detecting sensor W2 of the second heating zone satisfies the return temperature set value Tr, the heating valve V2 is closed by driving the motor under the control of the valve control unit CP. do.

After the bottom temperature of the second heating zone (Z2) reaches an average of 42 ~ 47 ℃, to maintain a constant, the second heating pipe (P2) and the second heating valve (V2) through the secondary differential heating operation to maintain The heating operation of the hot water boiler is performed by the heating time Wt, and when the set heating time Wt elapses, the hot water boiler heating supply is stopped, and the mode is switched to the differential heating stop mode.
As shown in Fig. 5, in the heating stop mode, in order to control the outside air compensation return temperature, when only the second heating zone Z2 is heated alone, the supply of the heating water supplied to the second heating pipe is maximized. The second heating valve (V2) of the second heating pipe (P2) to the maximum to continuously maintain the temperature of the second heating zone (Z2), the first heating zone (Z1) rather than the second heating zone (Z2). ) Or when the other room is being heated, the second heating valve V2 is opened to the minimum to supply the minimum heating water to the second heating zone. Thus, the lower neck heating in the differential heating operation mode is continued by comparing the set value and the measured value.

In order to continuously maintain the average floor temperature of 42 ~ 47 ℃, the heating stop time (St1, St2) is set by dividing into 1st differential heating operation and 2nd differential heating operation, and differential heating as shown in FIG. In the stop mode, the valve control unit CP stops the burner operation of the hot water boiler and performs individual operation control to operate only the circulation pump. Circulation of the heating water in the second heating pipe (P2) is stopped in order to control the indirect temperature control of the bottom temperature of the second heating zone (Z2) by using the correlation between the floor temperature and the outdoor compensation return temperature. Is carried out every 15 minutes for 2 minutes, and the return temperature is measured by the return temperature sensor W2 of the valve V2 and compared with the value of the external air compensation return temperature (Tro) of the valve control unit CP. When the return temperature is higher than the set outside compensation return temperature (Tro), the heating stop state is maintained. When the measured return temperature is lower than the set outside compensation return temperature (Tro), the second differential heating operation is started again by sending a heating supply signal from the valve controller CP to the hot water boiler by data communication. Even after the total stop time (St) has elapsed, if the detected return temperature in the pipe is higher than the set outside compensation return temperature (Tro), the total stop time value (St) is initialized to maintain the heating stop state. Repeat two minutes of operation every 15 minutes. When only the circulating pump is operated when the heating of the second heating zone Z2 is stopped, the valve V2 is fully opened to allow the maximum flow rate, but at the time of stopping the heating of the second heating zone Z2, the valve or the first heating zone is opened. When the heating operation signal of Z1 is input to the valve control unit CP, the valve V2 is opened to the minimum to allow circulation of the minimum flow rate.

In addition, if the measured indoor air temperature when the occupant selects the lower neck heating of the differential heating is lower than the set value and is in the primary differential heating operation mode, the control set value of the primary differential heating operation [Wt1, St1] The heating is operated, and after the first differential heating operation, it is automatically switched to the second differential heating operation. Unless otherwise instructed by the resident, the heating operation is continuously performed only in the secondary differential heating operation mode, and the entire differential heating operation mode is terminated only when the lower heating of the differential heating is released by the temperature controller (RC1). After that, the operation is switched to the regular uniform heating mode.

That is, the first heating zone Z1 senses the indoor air temperature of the entire room space by the indoor air temperature sensor S1 of the temperature controller RC1, and opens and closes the first heating valve V1 to perform heating. The second heating zone (Z2) has a high floor temperature, heating time control to form and maintain an average of 42 ~ 47 ℃, return temperature and heating flow proportional control, outside air compensation return water temperature control is carried out Heating

Therefore, the differential heating system according to the present invention is a heating system that can increase the comfort of the heating of the occupants, including the uniform heating function and the differential heating function to operate the indoor air temperature and floor temperature independently of one indoor space. Can be.

The differential heating system according to the present invention as described above can be applied to a residential building such as an apartment or detached house, and has the following characteristics.

First, the heating area of one room is divided into heating piping (P1, P2) of the residential area and the non-resident area. Preferably, the area ratio of the main area and the non-resident area is 30%: 70% or 40%: 60%. Limit not to exceed.

The temperature controller (RC1) can select the uniform heating and the differential heating, the function switch operation and the room air temperature can be set and changed. In addition, the temperature controller is the heating flow value according to the length of the heating pipes (P1, P2) of each room, the indoor air temperature (Ti2 = Ti1 + 5 ℃) for differential heating, the return temperature set value (Tr), the return temperature proportional control operation section ( ? Tr), primary and secondary differential heating operation times (Wt1, Wt2), primary and secondary differential heating stop times (St1, St2), and the like.

The valve control unit CP controls the outside air return return temperature (Tro1, Tro2, Tro3) and the valve opening value (Vo1, Vo2) in the single circulation and other heating circulations necessary for the differential heating operation control. Set the time Rt. The set value of the outdoor compensation return temperature is that the general apartment house is generally composed of three rooms (living room, bedroom 2, bedroom 3) in addition to one room of the differential heating system.

The reason why the heating time and stop time of the differential heating operation are divided into primary and secondary is the heating and stopping time for rapidly raising the floor temperature after going out or the lowered temperature in the case of the primary set value. Since the heating and stopping time of the stage after the first differential heating or the regular uniform heating, the time is compared, the heating time is Wt1> Wt2, the stop time is St1 <St2.

The above description is merely illustrative of the technical details of the present invention, and those skilled in the art to which the present invention pertains may various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

1 is a block diagram of a differential heating system according to the present invention.

Figure 2 is a differential heating system control flow chart according to the present invention.

Figure 3 is a differential heating system control flow chart according to the present invention.

Figure 4 is a differential heating system control flow chart according to the present invention.

Figure 5 is a differential heating system control flow chart according to the present invention.

Claims (17)

First heating piping for heating the first heating zone; A second heating pipe for heating a second heating zone and installed separately from the first heating pipe; A first heating valve and a second heating valve configured to adjust an amount of hot water supplied to the first heating pipe and the second heating pipe, respectively; A temperature controller for measuring and controlling air temperatures of the first heating zone and the second heating zone and controlling the bottom temperature of the second heating zone; A first return temperature sensor and a second return temperature sensor for sensing a temperature of hot water returned after circulating the first heating pipe and the second heating pipe; Proportional control of the opening degree of the first heating valve and the second heating valve according to the measured air temperature and the respective return temperatures measured by the first return temperature sensor and the second return temperature sensor A valve control unit; And a hot water boiler electrically connected to the valve control unit and individually controlling burner operation and circulation pump operation, wherein the first heating zone is an inactive area of one room space, and the second heating zone is one. Differential heating system, characterized in that the main activity area of the room space. The method of claim 1, The first heating pipe return temperature and the second heating pipe return temperature detected by the first return temperature detecting sensor and the second return temperature detecting sensor are transmitted to the valve control unit, and the valve control unit is configured to adjust the return temperature according to the return temperature. Differential heating system characterized in that for controlling the opening and closing operation of the heating valve and the second heating valve. The method of claim 1, The temperature controller is a differential heating system characterized in that it has an equal heating function and a differential heating function. The method of claim 1, The temperature controller includes an indoor air temperature sensor S1 for measuring an indoor temperature, and sends a heating valve shutoff signal to the valve controller CP when the measured indoor temperature reaches a preset indoor air temperature Ti1. Differential heating system. The method of claim 3, The equal heating function is a heating system, characterized in that the heating operation for adjusting the indoor air temperature of the first heating zone and the second heating zone. The method of claim 3, The differential heating function, the indoor air temperature control function for controlling the indoor air temperature in the first heating zone (Z1), and the lower neck heating function for controlling the floor temperature in the second heating zone (Z2) Differential heating system characterized in that. The method of claim 6, The lower neck heating function is differential heating system, characterized in that divided into the primary heating function and the secondary differential heating function. The method of claim 1, The valve control unit (CP) is connected to the first heating valve, the second heating valve and the temperature controller by an electrical signal, differential heating system, characterized in that connected to the hot water boiler by data communication. The method of claim 1, The valve control unit is a differential heating system characterized in that the air compensation control temperature control for indoor air heating control, return temperature and flow rate control, the lower neck heating time control and the lower floor heating indirect control in the lower neck heating stop mode. The method of claim 9, And the indoor air heating control starts heating when the indoor temperature measurement value is lower than the value set by the occupant, and stops the heating when the indoor temperature measurement value reaches the setting value. The method of claim 9, The return temperature and flow rate control proportionally controls the heating flow rate according to the return temperature measured by the first return temperature sensor W1 and the second return temperature sensor W2 and the return temperature value Tr set by the occupant. Differential heating system, characterized in that for driving the first heating valve and the second heating valve. The method of claim 9, The lower neck heating time control is performed separately from the indoor air temperature heating in the first heating zone Z1, and the lower neck heating is performed in the second heating zone Z2. Differential heating system, characterized in that the heating supply and heating stops from the hot water boiler through the heating pipe (P2) repeatedly to form a floor temperature of 42 ~ 47 ℃ average and maintain continuously. The method of claim 9, The outside air compensation return temperature control repeats the heating air for the entire heating stop time (St) when the return temperature measured by the second return temperature sensor (W2) is greater than the outside compensation return temperature (Tro), the measured return Differential heating system, characterized in that to maintain the bottom temperature of the second heating zone by starting the heating if the temperature is less than the outside compensation return temperature (Tro). The method of claim 13,  When the outside air compensation return temperature control, when heating only the second heating zone (Z2), the valve opening value Vo of the second heating valve (V2) has a maximum value that is fully open, the second heating zone (Z2) is Differential heating system, characterized in that the flow rate value or the valve opening value (Vo) of the second heating valve (V2) has a minimum value when heating only the first heating zone (Z1) or other compartment. The method of claim 1, The first heating pipe (P1) and the second heating pipe (P2) has an inlet and hot water outlet inlet, respectively, each inlet and outlet is connected to the first heating valve and the second heating valve, And the first heating valve and the second heating valve are connected to a distributor (D). The method of claim 15, The distributor (D) divides and supplies hot water supplied from the hot water boiler to each zone in the room, and supplies hot water returned to the hot water boiler after heating each zone. The method of claim 1, The hot water boiler is a separate operation control of the burner and the circulation pump, the circulation pump is capable of independent operation by the signal of the valve control unit, the burner and the circulation pump is capable of simultaneous sequential operation and individual independent operation. Differential heating system.

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