JP4013826B2 - Hot water floor heating system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
This invention circulates and supplies hot water of a predetermined temperature generated by a hot water heating heat source machine to a plurality of heating floors installed in the same room via hot water piping, and is installed in the hot water piping for each system. The present invention relates to a hot water type floor heating system that can be operated for each system or for a plurality of systems simultaneously, which controls on / off of the thermal valve.
[0002]
[Prior art]
In this type of hot water type floor heating system, it is common to turn on and off a thermal valve as an on-off valve based on the surface temperature of the heating floor, but even if the surface temperature of the heating floor is high, When the temperature is low, it feels cold, so it is desirable to perform on / off control of the thermal valve based on the room temperature. In that case, the room temperature detected by a single room temperature sensor installed in the room becomes the set temperature. In addition, it is conceivable to perform on / off control of each thermal valve while changing the on / off duty ratio.
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2000-121078
[Problems to be solved by the invention]
By the way, as described above, in the hot water type floor heating system that controls on / off of the thermal valve so that the room temperature detected by the single room temperature sensor installed in the room becomes the set temperature, all the systems are operated simultaneously. If only the heating floor system closer to the room temperature sensor is operated, the heating floor of the operating system and the room temperature sensor are not separated from each other. This is reflected in the detected rise in room temperature, so the surface temperature of the heating floor will not rise more than necessary, but when operating only the heating floor system far from the room temperature sensor, the system that is operating Because the heating floor of the room is separated from the room temperature sensor, the increase in the surface temperature on the heating floor is not reflected in the increase in the room temperature detected by the room temperature sensor. There is a problem rises.
[0005]
Accordingly, an object of the present invention is to provide a hot water type floor heating system in which the surface temperature of the heating floor does not rise more than necessary even when only the heating floor system far from the room temperature sensor is operated. There is.
[0006]
[Means for solving the problems and effects thereof]
In order to solve the above-mentioned problem, the invention according to claim 1 circulates and supplies hot water of a predetermined temperature generated by a hot water heating heat source machine to a plurality of heating floors installed in the same room via hot water piping. For each system, the on / off control of the open / close valve installed in the hot water pipe is performed while changing the on / off duty ratio so that the room temperature detected by a single room temperature sensor installed in the room becomes the set temperature. In a hot water type floor heating system that can be operated for each system or multiple systems at the same time, the room temperature rise time required for the room temperature detected by the room temperature sensor to rise by a predetermined temperature from the start of operation is measured in advance. When all the systems are operated simultaneously, the room temperature detected by the room temperature sensor is above the room temperature required to rise by a predetermined temperature from the start of operation. Compared with the reference time, if the room temperature rise time is longer than the room temperature rise reference time by a predetermined time or more, the on / off duty ratio of the on-off valve of the operating system is reduced by a predetermined ratio. A featured hot water floor heating system is provided.
[0007]
As described above, in this hot water type floor heating system, the actual room temperature rise time is compared with the room temperature rise reference time during simultaneous operation of all systems, and the room temperature rise time is compared with the room temperature rise reference time. If it is longer than the predetermined time, it is judged that the heating floor system closer to the room temperature sensor is not operated, and the on / off duty ratio of the thermal valve of the operating system is reduced by a predetermined ratio. Therefore, when operating only one of the systems, as in the case of operating all systems at the same time, the heating farther from the room temperature sensor as in the conventional hot water type floor heating system that controls the thermal valves on and off When only the floor system is operated, the surface temperature of the heated floor does not rise more than necessary, and it is the same as when all the systems are operated simultaneously or when only the heated floor system closer to the room temperature sensor is operated. In Properly it is possible to carry out the floor heating.
[0008]
In addition, regardless of whether all systems are operated simultaneously or one system is operated independently, for example, when the window of the room is left open, for some reason, the rise in the surface temperature in the heating floor, If it is not reflected in the increase in the room temperature detected by the room temperature sensor, the surface temperature of the heating floor may be increased more than necessary, so that the operation is performed as in the hot water type floor heating system according to the invention of claim 2. If the room temperature detected by the room temperature sensor does not rise more than a predetermined temperature from the start of operation even after a predetermined determination time has elapsed from the start, the on / off duty ratio of the open / close valve of the operating system is set to a predetermined value. It is desirable to reduce the ratio.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments will be described with reference to the drawings. As shown in FIG. 1, this hot water type floor heating system 1 includes a pair of heating floors 10 a and 10 b installed in a living room R, and the heating floors 10 a and 10 b via a hot water pipe 30 to a predetermined temperature ( For example, a hot water heating heat source 20 that circulates and supplies hot water at 60 ° C., thermal valves 40a and 40b as on-off valves installed in the hot water piping 30 so as to correspond to the heating floors 10a and 10b, And an operation remote controller 50 installed on the wall surface on the heating floor 10a side in the R. In addition to simultaneous operation of two systems for circulating hot water to both the heating floors 10a and 10b, any one of the heating floors 10a and 10b is provided. One system can be operated independently by circulating and supplying hot water to only one of them.
[0010]
The operation remote controller 50 includes a room temperature sensor 51 that detects the room temperature of the living room R, and a controller 52 that controls on and off of the thermal valves 40a and 40b based on the room temperature and the set temperature detected by the room temperature sensor 51. The controller 52 basically executes normal control to change the on / off duty ratio of the thermal valves 40a and 40b so that the room temperature detected by the room temperature sensor 51 becomes the set temperature, thereby heating the floor. The surface temperatures of 10a and 10b are indirectly controlled.
[0011]
However, the window of the living room R is not limited to the case where one system single operation is performed in which hot water is circulated and supplied only to the heating floor 10b far from the operation remote controller 50, or whether two systems are operated simultaneously or one system single operation. In the case of being left open, as described above, the increase in the surface temperature of the heating floors 10a and 10b is not easily reflected in the increase in the room temperature detected by the room temperature sensor 51, and normal control has been executed. Then, there exists a problem that the surface temperature of heating floor 10a, 10b will rise more than needed.
[0012]
Therefore, in this hot water type floor heating system 1, in order to solve these problems, the on / off duty ratios of the thermal valves 40a and 40b determined by the normal control are corrected as necessary. . Hereinafter, the operation of the hot water floor heating system 1 will be described with reference to the flowchart shown in FIG.
[0013]
First, before starting normal operation, two systems are operated simultaneously, and the room temperature rise required for the room temperature Ts detected by the room temperature sensor 51 to increase by a predetermined temperature ΔT (for example, 5 ° C.) from the start of operation. The reference time x is measured, and this room temperature rise reference time x is stored in the EEPROM of the controller 52 of the operation remote controller 50.
[0014]
Thereafter, when normal operation is started, the timer is first reset (step S1), and the room temperature Ts detected by the room temperature sensor 51 is required to increase by a predetermined temperature ΔT (for example, 5 ° C.) from the start of operation. After the room temperature rise time y is initialized to 0 (step S2), the normal control described above is executed (step S3).
[0015]
Subsequently, it is determined whether or not a predetermined determination time (for example, 60 minutes) has elapsed after the start of operation (step S4). If 60 minutes have not elapsed since the start of operation, it is detected by the room temperature sensor 51. It is determined whether or not the room temperature Ts has increased by a predetermined temperature ΔT (5 ° C.) from the start of operation (step S5), and the room temperature Ts has not increased by a predetermined temperature ΔT (5 ° C.) from the start of operation. Counts the time (step S6) and returns to step S3, but if the room temperature Ts has increased by a predetermined temperature ΔT (5 ° C.) from the start of operation, the room temperature increase time y is The elapsed time is set (step S7).
[0016]
Subsequently, it is determined whether or not the room temperature rise time y is longer than a room temperature rise reference time x stored in the controller 52 of the operation remote controller 50 by a predetermined time A (for example, 20 minutes) (step S8). When the room temperature rise time y is shorter than the room temperature rise reference time x + A (20 minutes), it is assumed that two systems are operated simultaneously, or one system single operation in which hot water is circulated only to the heating floor 10a close to the operation remote controller 50 is performed. Therefore, the normal control is continued after that (step S9).
[0017]
On the other hand, when the room temperature rise time y is equal to or greater than the room temperature rise reference time x + A (20 minutes) in step S8, one-system single operation is performed in which hot water is circulated and supplied only to the heating floor 10b far from the operation remote controller 50. Thereafter, the on / off control of the thermal valve 40b is executed while reducing the on / off duty ratio of the thermal valve 40b determined by the normal control to B% (for example, 50 to 60%). (Step S10).
[0018]
Further, in step S4, when a predetermined determination time (60 minutes) has elapsed from the start of operation, that is, even if 60 minutes have elapsed from the start of operation, the room temperature Ts detected by the room temperature sensor 51 is If the temperature does not increase by more than the predetermined temperature ΔT (5 ° C.) from the time point, it is assumed that for some reason, the increase in the surface temperature of the heating floors 10a and 10b is not reflected in the increase in the room temperature Ts detected by the room temperature sensor 51. If the normal control is performed, the surface temperature of the heating floors 10a and 10b may be increased more than necessary. In such a case, the process proceeds to step S10, and thereafter, the normal control is determined. The on / off control of the thermal valve 40b is executed while reducing the on / off duty ratio of the thermal valve 40b being reduced to B% (for example, 50 to 60%). .
[0019]
As described above, in this hot water type floor heating system 1, the actual room temperature rise time y is compared with the room temperature rise reference time x when two systems are simultaneously operated, and the room temperature rise time y is the room temperature rise reference. When the time x + the predetermined time A (20 minutes) or longer, it is determined that only the heating floor 10b far from the room temperature sensor 51 is operating, and the on / off duty of the thermal valve 40b determined by the normal control Since the ratio is reduced to B% (50 to 60%), when only one of the systems is operated, the thermal valve is controlled to be turned on and off in the same manner as when the two systems are operated simultaneously. When only the heated floor system far from the room temperature sensor is operated like the conventional hot water type floor heating system, the surface temperature of the heated floor does not rise more than necessary and the two systems are operated simultaneously. Similar to the case of driving only the system of heating floor 10a closer to the temperature sensor 51, properly can perform floor heating.
[0020]
Further, in this hot water type floor heating system 1, even when a predetermined determination time (60 minutes) has elapsed from the start of operation, the room temperature Ts detected by the room temperature sensor 51 is equal to the predetermined temperature ΔT (5 ° C. from the start of operation). ) If not increased above, the on / off duty ratio determined by the normal control of the thermal valves 40a and 40b of the operating system is reduced to B% (for example, 50 to 60%). So, for example, even when the surface temperature rise in the heating floors 10a and 10b is not reflected in the rise in the room temperature Ts detected by the room temperature sensor 51 for some reason, such as when the room window is left open. The surface temperature of the heating floors 10a and 10b does not rise more than necessary.
[0021]
In the above-described embodiment, in order to determine whether only the system of the heating floor 10b far from the room temperature sensor 51 is operating, two systems are operated simultaneously or one system is operated independently. Regardless of whether the room temperature rise time y is compared with the room temperature rise reference time x, the present invention is not limited to this. For example, the room temperature rise time y only when one system is independently operated. And the room temperature rise reference time x may be compared.
[0022]
In the above-described embodiment, the time during which the room temperature Ts detected by the room temperature sensor 51 rises by 5 ° C. from the start of operation is the room temperature rise time y and the room temperature rise reference time x. However, the present invention is not limited to this. However, the rising temperature may be set as appropriate according to the capabilities of the hot water heating heat source and the heating floor.
[0023]
In the above-described embodiment, when the room temperature rise time y is longer than the room temperature rise reference time x + the predetermined time A (20 minutes), only the system of the heating floor 10b far from the room temperature sensor 51 is operating. Although it is determined, the present invention is not limited to this, and the predetermined time A may be appropriately set in consideration of the determination accuracy of the heated floor that is in operation.
[0024]
In the above-described embodiment, even when a predetermined determination time (60 minutes) has elapsed from the operation start time, the room temperature Ts detected by the room temperature sensor 51 increases by a predetermined temperature ΔT (5 ° C.) or more from the operation start time. If not, for some reason, it is determined that the increase in the surface temperature of the heating floors 10a and 10b is not reflected in the increase in the room temperature Ts detected by the room temperature sensor 51. However, the present invention is not limited to this. The determination time may be appropriately set in consideration of the heating capacity of the installed heating floor, the actually measured room temperature rise reference time x, and the like.
[0025]
Moreover, although embodiment mentioned above demonstrated the case where there were two heating systems, it is not limited to this, For example, also about the hot water type floor heating system which has three or more heating systems, this invention. Can be applied. In that case, needless to say, it is necessary to measure in advance the room temperature rise reference time when all the systems are operated simultaneously.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram illustrating an embodiment of a hot water floor heating system according to the present invention.
FIG. 2 is a flowchart showing the operation of the hot water floor heating system according to the above.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Hot water type floor heating system 10a, 10b Heating floor 20 Hot water heating heat source machine 30 Hot water piping 40a, 40b Thermal valve (open / close valve)
50 Operation remote control 51 Room temperature sensor 52 Controller R Living room

Claims (2)

The hot water of a predetermined temperature generated by the hot water heating heat source machine is circulated and supplied to the heating floors of multiple systems installed in the same room via the hot water piping, and on-off valves installed in the hot water piping for each system Is a hot water type that can be operated for each system or multiple systems at the same time, controlling on / off while changing the on / off duty ratio so that the room temperature detected by a single room temperature sensor installed in the room becomes the set temperature. In the floor heating system,
The room temperature detected by the room temperature sensor is the room temperature rise time required for the temperature to rise by a predetermined temperature from the start of operation, and the room temperature detected by the room temperature sensor when all the systems are operated simultaneously, Compared to the room temperature rise reference time required to rise by a predetermined temperature from the start of operation,
When the room temperature rise time is longer than the room temperature rise reference time by a predetermined time or more, the on / off duty ratio of the on-off valve of the operating system is reduced by a predetermined ratio. system. If the room temperature detected by the room temperature sensor does not rise more than a predetermined temperature from the operation start time even after a predetermined determination time has elapsed from the operation start time, the on / off duty ratio of the open / close valve of the operating system is set. The hot water floor heating system according to claim 1, wherein the hot water floor heating system is reduced at a predetermined ratio.

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