JP2003302067A - Hot water type floor heating system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot water type floor heating system which surely controlling a room temperature to match a set temperature. <P>SOLUTION: In this hot water type floor heating system, a control unit 4 comprises a storage means 41, a level set means 42, a heating amount control means 43, and an open/close valve control means 44. The level set means 42 updates and sets the level of radiation amount according to a table stored in a storage means 41 according to the degree of rise or down of a temperature deviation ΔT(=T-T') between a set room temperature T' set by a set button 31 and a measured room temperature T measured by a room temperature sensor 32. The heating amount control means 43 indirectly controls the water temperature of a hot water circuit 1 by controlling the heating amount of a burner according to a set level (n). The open/close valve control means 44 controls the valve opening time of an open/close valve 151 according to the set level (n). <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heating circuit for heating water passing through the inside by a heating means and a floor heating circuit for warming the room by using hot water arranged on the floor surface of the room as a heat source. A hot water circuit including, a circulation pump that circulates hot water in the hot water circuit, and an on-off valve that is provided in the hot water circuit and that allows or prohibits the flow of hot water to the floor heating circuit by opening or closing the valve. Room temperature setting means for setting the temperature inside the room, room temperature measuring means for measuring the temperature inside the room, and temperature deviation ΔT (= T) between the room temperature T ′ set by the room temperature setting means and the room temperature T measured by the room temperature measuring means. -T ')
The present invention relates to a hot water floor heating system provided with a control means for controlling the amount of water heated by the heating means to the heating circuit and the opening time of the on-off valve.

[0002]

2. Description of the Related Art In the above hot water type floor heating system, hot water generated by heating water in a heating circuit by a heating means circulates in the hot water circuit by the operation of a circulation pump to give heat to the room through the floor heating circuit. Under this condition, floor heating operation is performed.

After the floor heating operation is started, the floor heating operation is performed for a certain time such as 30 minutes while the water temperature of the hot water circuit downstream of the heating circuit and upstream of the floor heating circuit is controlled to a high temperature such as 72 ° C. Continued. This is because the room temperature is raised in a short time after the floor heating operation is started to quickly warm the room.

Following the initial floor heating operation for a certain period of time, the temperature deviation ΔT (= T) between the measured room temperature T and the set room temperature T '
-T '), the water temperature of the hot water circuit downstream of the heating circuit and upstream of the floor heating circuit and the opening time of the on-off valve for each cycle (20 minutes) are controlled according to the table shown in Table 1.

[0005]

[Table 1] Deviation ΔT [° C] Hot water temperature [° C] Opening time [min] (1) 2.2 <ΔT 60 (72) 3 (3) (2) 1.8 <ΔT ≤ 2.2 60 ( 72) 5 (3) (3) 1.4 <ΔT ≦ 1.8 60 (72) 7 (4) (4) 1.0 <ΔT ≦ 1.4 60 (72) 9 (5) (5) 0 6 <ΔT ≦ 1.0 60 (72) 11 (6) (6) 0.2 <ΔT ≦ 0.6 60 (72) 13 (7) (7) −0.2 <ΔT ≦ 0.2 60 (72) 15 (8) (8) −0.6 <ΔT ≦ −0.2 60 (72) 17 (9) (9) −1.0 <ΔT ≦ −0.6 60 (72) 19 (10 ) (10) ΔT ≦ -1.0 60 (72) 20 (10)

As shown in Table 1, the water temperature in the hot water circuit is 60 ° C.
Although the control of the valve opening time in one cycle (20 minutes) is different between the case where the water temperature is controlled to 72 ° C. and the case where it is controlled to 72 ° C., the case where the water temperature is controlled to 72 ° C. will be described below. First, when the deviation ΔT is -1 ° C or less because the floor heating operation time is still short and the room temperature T is low, the valve opening time is set to 10 minutes in one cycle (see Table 1 (10)). As a result, heat is transferred from the hot water flowing through the floor heating circuit into the room, and the room temperature T gradually rises. And the room temperature T is the set room temperature T '
When the deviation ΔT approaches −0.2 ° C. or more and becomes 0.2 ° C. or less, the valve opening time is set to 8 minutes in one cycle (see Table 1 (7)).

[0007]

However, depending on various factors such as the structure and size of the room, the material of the structure and the outside temperature,
The amount of heat that escapes from the room to the outside fluctuates. Therefore, if the floor heating operation is executed over a certain period of time by uniformly setting the water temperature of the hot water circuit to a high temperature after the floor heating operation starts, the room temperature may rise excessively, and,
On the contrary, there is a possibility that it will be excessively lowered.

Further, the temperature deviation ΔT has a value of −0.2 ° C. ≦ ΔT ≦
If the valve opening time is uniformly set to 8 minutes when the temperature is 0.2 ° C., the room temperature T may excessively decrease or rise in view of the set temperature T ′. Therefore, a person in the room may feel uncomfortable when the room temperature T is controlled to be outside the set temperature T ′.

Therefore, it is an object of the present invention to provide a hot water type floor heating system capable of controlling the room temperature to more surely match the set temperature.

[0010]

In the hot water type floor heating system of the present invention for solving the above-mentioned problems, the control means sets a predetermined level of heat radiation from the floor heating circuit to the room, and the predetermined level. The amount of heat released to the water in the heating circuit by the heating means and the opening time of the on-off valve are controlled according to the level, and the level of the heat radiation amount is adjusted according to the degree of increase or decrease of the temperature deviation ΔT. Is increased, reduced or maintained, and the amount of heating of the heating circuit to water by the heating means and the opening time of the on-off valve are controlled in accordance with the increased, reduced or maintained level. .

According to the present invention, the temperature deviation ΔT (= T-
The level of the heat radiation amount can be updated and set according to the degree of rise or fall of T ′), and the heating amount by the heating means and the opening time of the on-off valve are controlled according to the updated level of the heat radiation amount. It The degree of increase or decrease of the temperature deviation ΔT (the degree of increase or decrease of the measured room temperature T based on the set room temperature T ') varies according to various conditions such as the size of the room, the amount of heat that escapes to the outside, and the outdoor temperature. Therefore, the level of the heat radiation amount can be set according to the conditions, and the room temperature can be stably controlled to the set temperature.

In the present invention, the control means controls the level of the heat radiation amount after the floor heating operation is started until the temperature deviation ΔT (= T-T ') exceeds a threshold value (<0). If the temperature deviation ΔT that exceeds the threshold value is kept constant and exceeds the first predetermined value (> 0), the level of the amount of heat radiation immediately before is reduced, and if it falls below the second predetermined value (<0), the level is immediately before. It is characterized in that the level of the amount of heat radiation is increased, and the level of the amount of heat radiation immediately before is maintained when it is equal to or lower than the first predetermined value and equal to or higher than the second predetermined value.

Further, in the present invention, the control means controls the level of the heat radiation amount after the floor heating operation is started until the temperature deviation ΔT (= T-T ') exceeds a threshold value (<0). When the temperature deviation ΔT, which is intermittently determined after exceeding the threshold value, is maintained constant, and exceeds the first predetermined value (> 0), the level of heat radiation immediately before is reduced to reduce the level of heat radiation. With the decrease, the temperature deviation ΔT, which is intermittently determined, decreases and the second
When the temperature deviation is below a predetermined value (<0), the level of the amount of heat radiation immediately before is increased, and the temperature deviation ΔT, which is intermittently determined after the level of the amount of heat radiation is reduced, or after the reduction and increase have been increased, is a first predetermined value. It is characterized in that the level of the amount of heat radiation immediately before is maintained when it is below and equal to or more than the second predetermined value.

According to the present invention, the level of the amount of heat radiation is appropriately updated and set in accordance with various conditions such as the amount of heat that escapes to the outside of the room according to the degree of rise and fall after the temperature deviation ΔT rises to the threshold value. As a result, the room temperature T can be stably controlled to the set room temperature T ′.

Further, in the present invention, the control means sets the level of the heat radiation amount to the maximum level after the floor heating operation is started, and the temperature deviation ΔT (= T-T ') is the threshold value (<
When 0) is exceeded, the level is lowered from the maximum level.

According to the present invention, since the amount of heat radiation is set to the maximum level after the floor heating operation is started, the room temperature can be rapidly raised. Further, since the level of heat radiation is lowered after the temperature deviation reaches the threshold value, the amount of heat radiation is maintained at the maximum level for a longer time than necessary, and the room temperature T becomes excessively higher than the set room temperature T ′. It is possible to avoid rising situations.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a hot water type floor heating system of the present invention will be described with reference to the drawings. FIG. 1 is a configuration explanatory view of a hot water floor heating system according to the first embodiment, FIG. 2 is a functional explanatory view of the hot water floor heating system according to the first embodiment, and FIG. 3 is a hot water floor heating system according to the first embodiment. It is an explanatory view of room temperature control by a floor heating system, and Drawing 4 is a functional explanatory view of a hot water type floor heating system of a 2nd embodiment.

The hot water type floor heating system shown in FIG. 1 includes a hot water circuit 1, a burner (heating means) 2, a remote controller 3 provided in a room where floor heating operation is performed and capable of various settings.
A control unit (control means) 4 for controlling the heating amount and the like of the burner 2 based on the setting and the like in the remote controller 3 is provided.

The hot water circuit 1 includes a heating circuit 11 for heating the water passing through the burner 2 and a floor heating circuit 16 for warming the room by using hot water passing through the floor heating device 5 provided in the room as a heat source. Is included as a component. The hot water circuit 1 extends from the downstream side of the heating circuit 11 to the cistern 13 that absorbs expansion and contraction of the hot water of the hot water circuit 1.
2, a circuit 14 extending from the cistern 13 to the upstream of the heating circuit 11, a circuit 15 branching from the circuit 14 to reach the upstream of the floor heating circuit 16, and a circuit extending from the downstream of the floor heating circuit 16 to join the circuit 12. And a circuit 17 that operates as a component.

The circuit 14 of the hot water circuit 1 is provided with a circulation pump 141 which circulates hot water in the hot water circuit 1 upstream of the branch position of the circuit 15. The circuit 15 of the hot water circuit 1 is provided with a thermal valve (open / close valve) 151 that opens / closes with energization / non-energization and thereby permits / prohibits the flow of hot water to the floor heating circuit 16. There is. Also, the hot water circuit 1
A hot water supply thermistor 152 for measuring the temperature of hot water supplied to the floor heating circuit 16 is provided upstream of the thermal valve 151 in the circuit 15.

Combustion air is supplied to the burner 2 by the fan 21, and the gas supplied from the gas passage 22 is ignited to combust. In the gas passage 22, the original gas solenoid valve 221, the gas solenoid valve 222, and the gas control valve 2 are arranged in this order from the upstream.
And 23 are provided.

On the remote controller 3, a setting button (room temperature setting means) 31 for setting the room temperature based on the display of a liquid crystal panel (not shown), a room temperature sensor (room temperature measuring means) 32 for measuring the room temperature, and floor heating. An operation switch 33 for switching ON / OFF of the operation is provided.

The control unit 4 stores a table (see the following Table 2) showing the relationship between the heat radiation amount level n, the water temperature of the hot water circuit 1 in the circuit 15 and the energization time to the thermal valve 152, etc. 41 is provided.

[0024]

[Table 2] Heat dissipation level n Water temperature of hot water circuit [° C] Energization time [min] 1 60 3 2 60 5 3 60 7 4 60 60 9 5 60 11 6 60 60 13 7 60 60 15 8 60 17 9 9 60 19 19 10 72 15 11 72 17 12 72 19

Further, the control unit 4, as will be described later, has a temperature deviation ΔT (= T−) between the room temperature T ′ set by the setting button 31 of the remote controller 3 and the room temperature T measured by the room temperature sensor 32.
Level setting means 42 for setting one level n based on T ′) and heating amount control means 43 for indirectly controlling the water temperature of the hot water circuit 1 by controlling the heating amount by the burner 2 according to the set level n. And an on-off valve control means 44 for controlling the valve opening time by controlling the energization time to the thermal valve 151 according to the set level n.

The function of the hot water floor heating system having the above structure will be described with reference to FIG.

In the remote controller 3, the operation switch 33 is turned off.
When operated N, first, the level setting means 42 sets the level n.
Is set to "12 (highest level)" (s102). In response to this, the heating amount control means 43 causes the hot water supply thermistor 152.
The target combustion amount of the burner 2 is determined so that the measured water temperature of the fan 2 becomes 72 ° C., and the rotation speed of the fan 21 is controlled to the rotation speed corresponding to the target combustion amount through the fan current.
The opening degree of 3 is controlled to an opening degree according to the target combustion amount. Also,
Gas passage 2 through igniter and ignition electrode (not shown)
The gas supplied from the 2 to the burner 2 is ignited, and the fan 2
Combustion air is supplied from 1 and the burner 2 starts combustion.

Next, the level setting means 42 determines whether or not the temperature deviation ΔT exceeds -3 ° C (threshold value) in order to determine whether or not the level n should be maintained at 12 (maximum level). The determination is made (s104). Subsequently, the temperature deviation ΔT is -3 ° C.
When it exceeds the (threshold value) (YES in s104), the level setting means 42 sets the level n from 12 (the highest level) to 10
(S106). At this time, the level n may be appropriately lowered to 8, 9 or the like instead of 10.

Next, the level setting means 42 sets the level n to 1
After switching from 2 to 10 (see s106), whether or not the temperature deviation ΔT is below −5 ° C. periodically every 20 minutes, the temperature deviation ΔT is −5 ° C. or more and −0.2 ° C. (second It is below -0.2 ° C (second value)
It is determined whether it is equal to or higher than a predetermined value and equal to or lower than 0.2 ° C. (first predetermined value) or exceeds 0.2 ° C. (first predetermined value) (s108, s110, s120).

Room temperature T due to opening of windows for ventilation, etc.
Rapidly decreases and the temperature deviation ΔT falls below −5 ° C. (YES in s108), the level setting means 42 sets the level n.
Is reset to "12" again (s102).

When the temperature deviation ΔT is -5 ° C. or more and less than -0.2 ° C. (N in s108)
O, YES in s110), it is determined whether the level n is 11 or less (whether or not the level n can be increased to n + 1) (s
112). At this time, level n is 11 or less (level n
If it can be increased to +1) (YES in s112), the level n is increased to n + 1 (s114). On the other hand, at this time, if the level n is 12 (the level n cannot be increased to n + 1) (NO in s112), the level n is maintained at 12 as it is (s124).

Further, the level setting means 42, when the temperature deviation ΔT is -0.2 ° C. or more and 0.2 ° C. or less (s11
If NO at 0, YES at s120), the level n is maintained as it is (s124).

Further, when the temperature deviation ΔT exceeds 0.2 ° C. (s110 and s1).
(NO in 20), it is determined whether or not the level n is 2 or more (whether or not the level n can be reduced to n-1) (s13).
2). At this time, if the level n is 2 or more (the level n can be reduced to n-1) (YES in s132), the level n is reduced to n-1 (s134). On the other hand, at this time, if the level n is 1 (the level n cannot be reduced to n-1) (NO in s132), the level n is maintained at 1 as it is (s124).

According to the level n set by the level setting means 42, the heating amount control means 43 follows the table 2 and the water temperature measured by the hot water supply thermistor 152.
The water temperature is indirectly controlled by controlling the heating amount of the burner 2. Further, the on-off valve control means 44 controls the energization time to the thermal valve 151 to indirectly control the valve opening time of the thermal valve 151.

How the room temperature T is controlled by setting the level n of the heat radiation amount by the level setting means 42 as described above will be described with reference to FIG.

Floor heating operation is executed at level n = 12,
After the temperature deviation ΔT exceeds -3 ° C, the temperature deviation ΔT becomes +
The room temperature T rises above the set temperature T ′ to the extent of exceeding 0.2 ° C. (see arrow A).

At this time, how much the room temperature T rises depends on various conditions such as room size, airtightness, and outdoor temperature. For example, in a small room or a room having a high airtightness, the room air has a small heat capacity and a small amount of heat escapes to the outside, so that the room temperature T greatly rises above the set temperature T ′. In this case, the state in which the temperature deviation ΔT exceeds 0.2 ° C. continues for a long time, and the number of times the level n is decreased by the level setting means 42 (see FIG. 2s134) becomes relatively large.
On the other hand, in a large room or a room with low airtightness, the room air T has a large heat capacity and a large amount of heat escaping to the outside, so that the room temperature T does not exceed the set temperature T '. in this case,
The state where the temperature deviation ΔT exceeds 0.2 ° C. is completed in a relatively short time, and the number of times the level n is decreased by the level setting means 42 (see FIG. 2s134) is relatively small.

By decreasing the level n, the heating amount control means 43 lowers the water temperature of the hot water circuit 1, or the opening / closing valve control means 44 shortens the opening time of the opening / closing valve 151, and the floor heating circuit. The amount of heat radiation from 16 to the room is reduced. Therefore, the room temperature T changes from rising to falling, and falls below the set temperature T ′ to the extent that the temperature deviation ΔT exceeds + 0.2 ° C. (see arrow B).

At this time, how much the room temperature T drops depends on various conditions such as room size, airtightness, and outdoor temperature. For example, in a small room or a room having a low airtightness, the room air has a small heat capacity and a large amount of heat escapes to the outside, so that the room temperature T is lower than the set temperature T ′ and greatly decreases. In this case, the state in which the temperature deviation ΔT is lower than −0.2 ° C. continues for a long time, and the number of times the level n is increased by the level setting means 42 (see FIG. 2s114) becomes relatively large. On the other hand, for large rooms and rooms with high airtightness,
Since the heat capacity of the indoor air is large and the amount of heat that escapes to the outside is small, the degree to which the room temperature T falls below the set temperature T ′ is small. In this case, the state in which the temperature deviation ΔT falls below −0.2 ° C. is completed in a relatively short time, and the level setting means 42 sets the level n.
Is relatively small (see FIG. 2s114).

Whether the water temperature of the hot water circuit 1 is raised by the heating amount control means 43 by increasing the level n,
Alternatively, the opening / closing valve control unit 44 extends the opening time of the opening / closing valve 151 to increase the amount of heat radiation from the floor heating circuit 16 to the room. Therefore, the room temperature changes from decreasing to increasing, and thereafter, the level setting means 42 repeatedly decreases and increases the level n as described above (see s114 and s134 in FIG. 2). As a result, the room temperature T also repeatedly rises and falls (see arrow C). After that, when the temperature deviation ΔT becomes stable at −0.2 ° C. or higher and 0.2 ° C. or lower, the level n is not increased or decreased by the level setting means 42 and is maintained as it is (see FIG. 2s124). This stabilizes the room temperature T near the set temperature T '(see arrow D).

According to the hot water type floor heating system of the present embodiment, the level n of the heat radiation amount is set to 12 (the highest level) after the floor heating operation is started (see s102 in FIG. 2), and the room temperature T is rapidly raised. Can be achieved (see arrow A in FIG. 3). In addition, the room temperature T rises and the temperature deviation ΔT is -3 ° C.
After exceeding the (threshold value), the level n is decreased (Fig. 2s1).
06). Therefore, it is possible to avoid a situation in which the level n of the heat radiation amount is maintained at 12 (the highest level) for an unnecessarily long time and the room temperature T rises excessively higher than the set room temperature T ′.

Further, the level n is set based on the temperature deviation ΔT, but the degree of increase or decrease of the temperature deviation ΔT depends on various conditions such as the amount of heat escaping from the room to the outside.
The level n can be set according to the conditions (see s114, s124, and s134 in FIG. 2). Also,
Based on the level, the heating amount control means 43 controls the heating amount of the burner 2 and thus the water temperature of the hot water circuit 1, and the opening / closing valve control means 44 controls the opening time (energization time) of the opening / closing valve 151. , The room temperature T can be stably controlled to the set temperature T ′ (see arrow D in FIG. 3).

Further, since the room temperature of the room in various environments can be controlled by the table (see Table 2) stored in the storage means 41, a plurality of room types such as tatami mats, flooring, stones, etc. can be used to cope with different floor materials. It is possible to save the storage capacity of the storage means 41 required for storing the table for room temperature control, as compared with the case where the table (see Table 1) is stored.

Next, the second of the hot water type floor heating system of the present invention
An embodiment will be described. The system configuration of the second embodiment is similar to that of the system of the first embodiment shown in FIG. According to the system of the second embodiment, the room temperature T is controlled by the procedure shown in FIG.

Steps s202 to s206 shown in FIG. 4 are shown in FIG.
Since it is the same as the steps s102 to s104 shown in FIG. The second embodiment differs from the first embodiment not only in the case where the increase / decrease width of the level n is “1” but also in “2”.
This is also the case.

Specifically, after the level n is switched from 12 to 10 (see s206), whether or not the temperature deviation ΔT is below −5 ° C. periodically every 20 minutes, the temperature deviation ΔT is −5. Whether it is below -3 ° C and below -3 ° C, is below -3 ° C and below -0.2 ° C,
It is determined whether it is −0.2 ° C. or more and 0.2 ° C. or less, or 0.2 ° C. and 3 ° C. or less, or 3 ° C. or more (s108, s210, s220, s230, s24).
0).

Room temperature T due to opening of windows for ventilation, etc.
Rapidly decreases and the temperature deviation ΔT falls below −5 ° C. (YES in s208), the level setting means 42 sets the level n.
Is reset to "12" again (s202).

When the temperature deviation ΔT is not less than −5 ° C. and less than −0.2 ° C., the level setting means 42 (N in s208).
O, YES in s210), it is determined whether or not the level n is 10 or less (whether or not the level n can be increased to n + 2) (s
212). At this time, level n is 10 or less (level n
If it can be increased to +2) (YES in s212), the level n is increased to n + 2 (s114). On the other hand, at this time, if the level n is 11 or 12 (the level n cannot be increased to n + 2) (NO in s112), it is further determined whether or not the level n is 11 or less (whether or not the level n can be increased to n + 1). (S222).

When the temperature deviation ΔT is -3 ° C or more and less than -0.2 ° C (s21).
It is determined whether the level n is 11 or less (whether or not the level n can be increased to n + 1) (s222). At this time, the level n is 11 or less (level n
Can be increased to n + 1) (YES in s222),
The level n is increased to n + 1 (s114). On the other hand, at this time, if the level n is 12 (the level n cannot be increased to n + 1) (NO in s112), the level n is maintained at 12 as it is (s222).

Further, the level setting means 42, when the temperature deviation ΔT is −0.2 ° C. or more and 0.2 ° C. or less (s22
If 0, NO in s230, YES), the level n is maintained as it is (s234).

When the temperature deviation ΔT exceeds 0.2 ° C. and is 3 ° C. or less (NO in s230, YES in s240), the level setting means 42 determines whether the level n is 2 or more (level n). Is determined to be n-1) (s242). At this time, if the level n is 2 or more (the level n can be reduced to n-1) (YES in s242), the level n is reduced to n-1 (s244). On the other hand, at this time, if the level n is 1 (the level n cannot be reduced to n-1) (NO in s242), the level n is maintained at 1 as it is (s234).

Further, when the temperature deviation ΔT exceeds 3 ° C. (NO in s240), the level setting means 42 sets the level n.
Is 3 or more (whether or not the level n can be reduced to n-2) (s252). At this time, the level n is 3
If it is above (the level n can be reduced to n-2) (s25
2), the level n is decreased to n-2 (s25).
4). On the other hand, at this time, if the level n is 1 or 2 (the level n cannot be reduced to n-2) (NO in s252), it is determined whether or not the level n can be originally written to n-1 (s24).
4).

Hereinafter, as in the first embodiment, according to the level n set by the level setting means 42, the heating amount control means 43 follows the table 2 and the burner 2 based on the water temperature measured by the hot water supply thermistor 152. The water temperature is indirectly controlled by controlling the heating amount of. Further, the on-off valve control means 44 controls the energization time to the thermal valve 151 to indirectly control the valve opening time of the thermal valve 151.

According to the system of the second embodiment, the level n is appropriately increased / decreased in the width "2" larger than 1 (FIG. 4s).
214, s254). Therefore, while the room temperature T repeatedly increases and decreases, the convergence speed to the set room temperature T ′ is increased (see FIG. 3, arrows B and C), and the room temperature T can be quickly converged to the set room temperature T ′ (FIG. 3 arrow D). reference).

In the first and second embodiments, the hot water circuit 16 is set for one level n in the table shown in FIG.
Water temperature (warm water temperature) and energization time to the thermal valve 151 (~
Although one combination of (valve opening time) corresponds, as another embodiment, for example, in the level “9”, the hot water temperature = 60.
A plurality of combinations of the two may correspond to one level n, such as a temperature of 72 ° C. and a conduction time of 13 minutes in addition to a temperature of 72 ° C. and conduction time of 19 minutes.

In the present embodiment, the hot water circuit 1 is the floor heating device 5
Although the floor heating circuit 16 passing through is included in another embodiment, in addition to the floor heating circuit 16 as another embodiment, a hot water type hot air heater (not shown) that branches from the circuit 12 and uses hot water of the hot water circuit 1 as a heat source.
It may include a warm air heating circuit (not shown) that merges with the circuit 17 after passing through.

[Brief description of drawings]

FIG. 1 is a configuration explanatory view of a hot water floor heating system according to a first embodiment.

FIG. 2 is a functional explanatory diagram of the hot water floor heating system according to the first embodiment.

FIG. 3 is an explanatory diagram of room temperature control by the hot water floor heating system according to the first embodiment.

FIG. 4 is a functional explanatory diagram of the hot water floor heating system according to the second embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Hot water circuit, 2 ... Burner (heating means), 31 ... Setting button (temperature setting means), 4 ... Control unit (control means), 5 ... Floor heating system

Claims (4)

[Claims] 1. A hot water circuit including a heating circuit for heating water passing through the inside by a heating means, and a floor heating circuit arranged on the floor surface of the room to heat the room by using hot water passing through the inside as a heat source. , A circulation pump for circulating hot water in the hot water circuit, an on-off valve provided in the hot water circuit for permitting or prohibiting the flow of hot water to the floor heating circuit by opening or closing, and setting the temperature in the room Based on the temperature deviation ΔT (= T−T ′) between the room temperature T ′ set by the room temperature setting means and the room temperature T measured by the room temperature measuring means. A hot water type floor heating system comprising: a heating means for heating water in the heating circuit by the heating means; and a control means for controlling an opening time of the opening / closing valve, wherein the control means is the floor heating. Set a predetermined level of heat radiation from the circuit to the room However, after controlling the amount of heating of the heating circuit by the heating means to water according to the predetermined level and the opening time of the on-off valve, depending on the degree of increase or decrease of the temperature deviation ΔT. Increasing, decreasing or maintaining the level of heat radiation, and controlling the amount of heating of the heating circuit to water by the heating means and the opening time of the on-off valve according to the level of increasing, decreasing or maintaining. Hot water type floor heating system. 2. The control means keeps the level of heat radiation constant until the temperature deviation ΔT (= T−T ′) exceeds a threshold value (<0) after the floor heating operation is started. , The temperature deviation ΔT exceeding the threshold value is a first predetermined value (> 0)
If it exceeds, the level of heat release immediately before is reduced, if it is below the second predetermined value (<0), the level of heat release immediately before is increased, and if it is below the first predetermined value and above the second predetermined value. 2. The level of the immediately preceding heat radiation amount is maintained.
Hot water floor heating system as described. 3. The control means keeps the level of heat radiation constant until the temperature deviation ΔT (= T−T ′) exceeds a threshold value (<0) after the floor heating operation is started. , The temperature deviation ΔT which is intermittently determined after exceeding the threshold value
Is greater than the first predetermined value (> 0), the level of the amount of heat radiation immediately before is reduced, and the temperature deviation ΔT which is intermittently determined decreases as the level of the amount of heat radiation decreases, and the second predetermined value ( <0)
When the temperature deviation falls below the range, the immediately preceding level of the amount of heat radiation is increased, and the temperature deviation ΔT, which is intermittently determined after the level of the amount of heat radiation is reduced, or after being reduced and increased, is equal to or less than a first predetermined value and a second predetermined value. The hot water floor heating system according to claim 1, wherein the level of the amount of heat radiation immediately before is maintained when the above is exceeded. 4. The control means sets the level of the heat radiation amount to the maximum level after the floor heating operation is started, and the temperature deviation ΔT (= T−T ′) exceeds the threshold value (<0). When
The hot water floor heating system according to claim 2 or 3, wherein the level is lowered from the maximum level.