JPH10103688A - Control method for floor heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control method for a floor heater which prevents a floor heat exchanger from being overheated and speeds up the starting up of overall heating by returning operation conditions of a heat source machine to a high temperature heating mode so as to supply high temperature heating water. SOLUTION: There is provided a control method of a floor heater which includes a plurality of floor heat exchangers provided in parallel, and a heat source machine for supplying heating water to the floor heat exchangers, the heat source machine being changed over to a low temperature heating mode relatively low temperature heating water is supplied and a high temperature heating mode where high temperature heating water is supplied. When the high temperature heating mode is required for some of the plurality of the floor heat exchangers after the heat source machine is once transferred to the low temperature heating mode, the heat source machine is returned to the high temperature heating mode under the conditions where the high temperature heating mode is required for all other heat exchangers.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention comprises a plurality of floor heat exchangers provided in parallel, and a heat source unit for supplying heating water to these floor heat exchangers. The operation is switched between a low-temperature heating mode (for example, a mode for supplying 60 ° C. heating water) for supplying heating water at a high temperature and a high-temperature heating mode (for example, a mode for supplying heating water at 80 ° C.) for supplying high-temperature heating water. The present invention relates to a method for controlling a floor heating device.

[0002]

2. Description of the Related Art Conventionally, as this type of floor heating apparatus, for example, one having a structure shown in FIG. 2 is known. In this figure, a floor heating device denoted by reference numeral 1 is a floor heat exchanger 2 (2) such as a hot water mat installed in each of a plurality of rooms A to C.
a to 2c) and a heat source unit 3 for heating the heating water supplied to each of the floor heat exchangers 2 (2a to 2c).

[0003] In the rooms A to C, the floor heat exchangers 2 (2a to 2c) are provided corresponding to the floor heat exchangers 2 (2a to 2c).
Is provided with a controller 4 for outputting a drive signal for determining the operation mode.

Further, the heat source unit 3 is provided with a heater 6 provided with a gas burner 5, and the heated tap water of the heater 6 is supplied to the floor heat exchanger 2. Hot water supply pipe 7 is connected to the floor heat exchanger 2 at the downstream end of the hot water supply pipe 7.
(2a to 2c) is provided with a distribution header 8 for distributing and supplying the heating water to each of the floor heat exchangers 2 (2a to 2c). A thermal valve 9 is provided.

[0005] Further, the heater 6 is connected to a heating water return pipe 10 for returning the heating water that has completed the heat exchange in the floor heat exchangers 2 (2A to 2c). At the upstream end of the pipe 10, a collective header 11 to which the floor heat exchangers 2 (2a to 2c) are connected is provided.

In the middle of the heating water return pipe 10, a volume change accompanying a temperature change of the heating water circulated in the floor heating device 1 is absorbed, and a gas mixed therein is separated. An expansion tank 12 and a circulation pump 13 for circulating the heating water are provided.
In the middle of the heating water return pipe 10, a low-temperature water temperature sensor 14 for detecting the temperature of the heating water returned to the heater 6 is provided.

The expansion tank 12 is connected to a pair of water level sensors 15 and an overflow pipe 16 for discharging excess heating water out of the machine, and based on a detection signal from the water level sensor 15, A water supply pipe 17 for supplying water into the tank 12 is connected.

On the other hand, in the vicinity of the heater 6 of the hot water supply pipe 7, a high temperature water temperature sensor 18 for detecting the temperature of the heating water sent from the heater 6 is provided.

The one designated by reference numeral 19 is arranged in the heat source unit 3 to control the heating capacity of the heater 6 based on a signal from each of the controllers 4 and to control each of the heat sources. By controlling the opening and closing of the valve 9, the amount of heat supplied to each of the floor heat exchangers 2 (2 a to 2 c) is adjusted.

The operation of the floor heating apparatus 1 having the above-described configuration during the heating operation will be described with reference to the flowchart shown in FIG. 3. First, when the heating operation is started, any one of the floor heat exchangers 2 is activated. The operation of the two floor heat exchangers 2a is started (step S1), and then a timer for measuring an elapsed time from the start of the heating operation is set (step S1).
2).

Then, the process proceeds to step S3, where it is determined whether or not the high-temperature heating mode is selected by the controller 4a provided corresponding to the floor heat exchanger 2a in the operating state. The process proceeds to the next step S4 on condition that the high-temperature heating mode is selected, and it is determined whether or not the next heat exchanger 2b is in the operating state. Goes to step S10 to be described later,
Is set to the low-temperature heating mode, and thereafter, the heat source unit 3 is maintained in the low-temperature heating mode irrespective of the heating mode set in the other floor heat exchangers 2b and 2c.

If it is determined in step S4 that the next floor heat exchanger 2b is in the operating state, the process proceeds to the next step S5, where the next floor heat exchanger 2b is operated.
In the controller 4b provided corresponding to
It is determined whether or not the high-temperature heating mode has been selected, and the process proceeds to the next step S6 on condition that the high-temperature heating mode has been selected. The heat source device 3 is maintained in the low-temperature heating mode, and
If the floor heat exchanger 2b is in the operation stop state in step S4, the process directly proceeds to step S6.

In step S6, it is determined whether or not the remaining floor heat exchanger 2c is in operation. If it is determined that the floor heat exchanger 2c is in operation, Then, the process proceeds to the next step S7, where it is determined whether or not the high-temperature heating mode is selected by the controller 4c provided corresponding to the floor heat exchanger 2c, and the high-temperature heating mode is selected. The process proceeds to the next step S8 on condition that the heat source unit 3
Is set to the high-temperature heating mode, the process proceeds to the next step S9, and when it is determined in step S6 that the operation of the floor heat exchanger 2c is stopped,
The process directly proceeds to step S8, and the heat source unit 3 is set to the high-temperature heating mode.

On the other hand, if it is determined in step S7 that the low-temperature heating mode has been selected for the floor heat exchanger 2c, the process proceeds to step S10 and thereafter, where the heat source unit 3 The low temperature heating mode is maintained.

The process proceeds to step S8, where the heat source unit 3
Is set to the high-temperature heating mode, it is determined whether or not the elapsed time has elapsed, for example, 60 minutes, based on the elapsed time from the start of the heating operation measured in the next step S9. If minutes have passed,
The process proceeds to the next step S10, in which the heat source device 3 is switched to the low-temperature heating mode.

As described above, in the conventional floor heating apparatus 1, when at least one of the plurality of floor heat exchangers 2 is set to the low-temperature heating mode, the other floor heat exchangers 2 are set to the high-temperature heating mode. Is set, the heat source unit 3 is maintained in the low-temperature heating mode, and this state is released only when the operation of the whole-bed heat exchanger 2 is stopped.

Such operation control prevents the high-temperature heating water from being supplied to the floor heat exchanger 2 in the stable heating state, and prevents the floor heat exchanger 2 in the stable heating state from being supplied.
This is a measure taken to prevent overheating.

In the process of step S10, the high-temperature heating mode is forcibly shifted to the low-temperature heating mode 60 minutes after the start of the heating operation. Although the appropriate heating state is reached, due to failure of equipment such as a temperature sensor, etc., the rise in indoor temperature cannot be detected, and despite the sufficient temperature rise, high-temperature heating water continues to be supplied. This is to prevent the floor heat exchanger 2 from being overheated due to being supplied.

[0019]

According to the conventional operation control described above, according to the conventional operation control, once the heat source unit 3 is set to the low-temperature heating mode, the floor where the low-temperature heating mode is set in a stable heating state is set. Even when the operation of the heat exchanger 2 is stopped and a situation where the high-temperature heating mode is set in another floor heat exchanger 2 occurs, the operation mode of the heat source unit 3 is changed to the low-temperature heating mode. The mode is maintained, and switching to the high-temperature heating mode is not performed.

In such a situation, even if high-temperature heating water is circulated in the circulation system, the operation of the floor heat exchanger 2 set in the low-temperature heating mode is stopped. The low-temperature heating water is supplied to the floor heat exchanger 2 set in the high-temperature heating mode, even though the high-temperature heating water is not supplied to the floor heat exchanger 2 to be overheated. Becomes

As a result, even if high-temperature heating water is supplied, even if no trouble occurs in the apparatus, high-temperature heating water is not supplied to the floor heat exchanger 2 set to the high-temperature heating mode. Therefore, there arises a problem that the rise of heating in the floor heat exchanger 2 is delayed.

The present invention has been made in view of such a conventional problem, and in a state in which high-temperature heating water can be supplied, the operating state of a heat source unit is returned to a high-temperature heating mode, so that floor heat can be reduced. It is an object of the present invention to provide a control method of a floor heating device that can accelerate the rise of heating as a whole while preventing overheating of the exchanger.

[0023]

According to a first aspect of the present invention, there is provided a method of controlling a floor heating apparatus, comprising: a plurality of floor heat exchangers provided in parallel; A heat source unit for supplying heating water to the floor heat exchanger, and the heat source unit is switched between a low-temperature heating mode for supplying relatively low-temperature heating water and a high-temperature heating mode for supplying high-temperature heating water. A method of controlling a floor heating device, wherein after the heat source device is once shifted to a low-temperature heating mode,
When a high-temperature heating mode request is made in some of the plurality of floor heat exchangers, the high-temperature heating mode request is made in all other floor heat exchangers. It is characterized by returning to the heating mode.

According to a second aspect of the present invention, there is provided a method of controlling a floor heating apparatus, comprising a plurality of floor heat exchangers provided in parallel, and a heat source unit for supplying heating water to the floor heat exchangers. A method for controlling a floor heating apparatus in which the heat source device is operated to switch between a low-temperature heating mode for supplying relatively low-temperature heating water and a high-temperature heating mode for supplying high-temperature heating water. Once the machine has been transferred to the low-temperature heating mode, when a high-temperature heating mode request is made in some of the plurality of floor heat exchangers, the circulation of the heating water in all other floor heat exchangers is performed. It is characterized in that the heat source unit is returned to the high-temperature heating mode on condition that it is stopped.

Further, the floor heating apparatus control method according to claim 3 of the present invention is characterized in that in claim 1 or claim 2,
After a lapse of a predetermined time from the start of the operation of the floor heating device, the transition to the high-temperature heating mode is prevented.

[0026]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the flowchart shown in FIG. Since the heating device to which the control method according to the present embodiment is applied is the same as the conventional heating device, the description of the device in the following description will be given with reference to FIG.

The control method of the floor heating apparatus 1 according to the present embodiment includes a plurality of floor heat exchangers 2 (2a to 2a) provided in parallel.
2c) and a heat source unit 3 for supplying heating water to these floor heat exchangers 2 (2a to 2c). The heat source unit 3 supplies a relatively low temperature heating water, and a high temperature mode. A method for controlling a floor heating device 1 that is operated to be switched to a high-temperature heating mode for supplying heating water, wherein the plurality of floor heat exchangers 2 ( When a high-temperature heating mode request is made in some of 2a to 2c), a high-temperature heating mode request is made in all other floor heat exchangers 2 (2a to 2c). Floor heat exchanger 2 (2a-2)
The heat source unit 3 is returned to the high-temperature heating mode on condition that the operation of c) is stopped.

Further, regarding the control method of the present embodiment,
This will be described in detail with reference to the flowchart of FIG. This control method is performed following steps S11 to S1 performed when it is determined in step S3, step S5, and step S7 in the control flow relating to the conventional control method shown in FIG. 3 that the low-temperature heating mode has been set.
8 to which the processing in step S3,
If it is determined in steps S5 and S7 that the low-temperature heating mode has been set in the controllers 4a to 4b, the process proceeds to step S11 and the heat source device 3
Is temporarily set to the low-temperature heating mode.

Next, a determination is made in step S12 as to whether or not the elapsed time of the heating operation time has elapsed for 60 minutes.
The process proceeds to the subsequent steps, and the heat source unit 3 is maintained in the low-temperature heating mode.

If the continuation time of the heating operation is within 60 minutes, the process proceeds to the next step S13, where it is determined whether or not the floor heat exchanger 2a is in the operating state. The process proceeds to the next step S14 on condition that there is a condition, and it is determined whether or not the high-temperature heating mode is set in the floor heat exchanger 2a. If the high-temperature heating mode is set in this step S14, the next Then, when it is determined in step S13 that the operation of the floor heat exchanger 2a has been stopped, the process directly proceeds to step S15.

If it is determined in step S24 that the low-temperature heating mode has been set, the process proceeds to step S11 and subsequent steps.

In step S15, it is determined whether or not the next floor heat exchanger 2b is operating.
The following step S16 is performed on condition that the vehicle is in the operating state.
Then, it is determined whether or not the high-temperature heating mode has been set for the floor heat exchanger 2b. If the high-temperature heating mode has been set, the process shifts to the next step S17. At the floor heat exchanger 2b
If it is determined that the operation is stopped, the process directly proceeds to step S17.

On the other hand, if it is determined in step S16 that the low-temperature heating mode has been set, the process proceeds to step S11 and subsequent steps.

Further, in step S17, it is determined whether or not the remaining floor heat exchanger 2c is in the operating state, and if it is in the operating state, the process proceeds to the next step S18. It is determined whether or not the high-temperature heating mode is set for the floor heat exchanger 2c. If the high-temperature heating mode is set, the process proceeds to step S8 of the conventional processing flow, and the heat source unit After the step 3 is shifted to the high-temperature heating mode, the processing of the cedar step S9 and subsequent steps is continuously performed.

According to such control, if the operating state of each of the floor heat exchangers 2 (2a to 2c) does not match the condition for supplying high-temperature heating water immediately after the heating operation, the heat source unit is temporarily stopped. By setting 3 to the low-temperature heating mode, the supply of high-temperature heating water to each of the floor heat exchangers 2 (2a to 2c) is stopped, and overheating is prevented.

If the continuation time of the heating operation is within 60 minutes, the operation state of each of the floor heat exchangers 2 (2a to 2c) is checked by the processing of steps S12 to S18. In this embodiment, when the operating state of the air conditioner satisfies the condition for supplying the high-temperature heating water, the high-temperature heating mode is set in all the floor heat exchangers 2 (2a to 2c). Floor heat exchanger 2
When the high-temperature heating mode is set and the operation of the other heat exchangers is stopped, the process shifts to step S8 and shifts to the high-temperature heating mode.

Therefore, in this embodiment, when high-temperature heating water is supplied, the plurality of floor heat exchangers 2 (2
If any of a) to 2c) is likely to be overheated, the heat source unit 3 is shifted to or maintained in the low-temperature heating mode, and the supply of the high-temperature heating water is prevented. Overheating in the heat exchanger 2 (2a to 2c) is prevented.

Further, within a predetermined time, each of the floor heat exchangers 2
The operation state of (2a to 2c) changes, and the mutual operation state of the floor heat exchanger 2 is increased even when high-temperature heating water is supplied.
When the relationship is such that overheating does not occur, the heat source unit 3 is shifted to the high-temperature heating mode, high-temperature heating water is sent to the heating-water circulation system, and the high-temperature heating mode is set. The high-temperature heating water is supplied to the floor heat exchanger 2, and the heating operation is quickly started.

Further, in the present embodiment, in step S10 and step S12, after a predetermined time (60 minutes in this example) has elapsed from the start of the heating operation, the operation state is maintained in the low-temperature heating mode. Alternatively, the mode is immediately shifted to the low-temperature heating mode.

As a result, excessive supply of high-temperature heating water due to malfunction of the equipment is prevented, and the effect of preventing overheating is further enhanced.

The above embodiment is merely an example, and various modifications can be made based on design requirements and the like. For example, in the above embodiment, the condition for returning to the high-temperature heating mode is that the high-temperature heating mode is set in all the floor heat exchangers 2 (2a to 2c), or that some of the floor heat exchangers 2 (2a to 2c) are set. In the above, an example is shown in which the high-temperature heating mode is set and the operation of all the other floor heat exchangers 2 is stopped, but it is also possible to set only one of these conditions. is there.

The stopped state of the floor heat exchanger 2 as a condition for returning to the high-temperature heating mode indicates a state in which the use of the floor heat exchanger 2 has been completely terminated. Alternatively, a condition in which the hot water supply to the floor heat exchanger 2 is stopped for keeping the temperature in the operating state may be set as the condition for returning to the high-temperature heating mode.

[0043]

As described above, according to the first aspect of the present invention,
The control method of the floor heating device according to the present invention includes: an operation mode of the heat source unit, a high-temperature heating mode for supplying high-temperature heating water to a plurality of floor heat exchanges connected in parallel, and a low-temperature heating mode for supplying low-temperature heating water. In the floor heating apparatus that performs floor heating by switching to the above, after the heat source unit is once shifted to the low temperature heating mode, a high temperature heating mode request is made in some of the plurality of floor heat exchangers. In this case, on condition that the high-temperature heating mode request is made in all other floor heat exchangers, the heat source device is returned to the high-temperature heating mode. Is returned to the high-temperature heating mode, and at the same time, high-temperature heating water is supplied to the entire floor heat exchanger, whereby the rise of the heating can be hastened.

Further, since the high-temperature heating water is supplied in the state where the all-bed heat exchanger is set to the high-temperature heating mode, overheating does not occur in these units.

In the floor heating apparatus control method according to a second aspect of the present invention, the operation mode of the heat source unit is set to a high temperature heating mode for supplying high-temperature heating water to a plurality of floor heat exchangers connected in parallel. In a floor heating device configured to perform floor heating by switching to a low-temperature heating mode for supplying low-temperature heating water, after the heat source device is once shifted to the low-temperature heating mode, the plurality of floor heat exchangers When a high-temperature heating mode request is made in some of them, the heat source unit is returned to the high-temperature heating mode on condition that circulation of the heating water in all the other floor heat exchangers is stopped. Therefore, the high-temperature heating water can be supplied to the floor heat exchanger requiring the high-temperature heating mode without being sent to the sufficiently heated floor heat exchanger.

Therefore, while preventing the supply of high-temperature heating water to the floor heat exchanger that does not require heating and preventing its overheating, high-temperature heating water is supplied to the floor heat exchanger that requires heating. Thus, the rise of the heating can be made quick.

Further, the control method of the floor heating device according to claim 3 of the present invention is the method according to claim 1 or 2.
After a predetermined time has elapsed since the operation of the floor heating device was started, the transition to the high-temperature heating mode was prevented, so that the high-temperature heating water was excessively supplied due to a malfunction of the device or the like. Can be prevented, and the overheating prevention effect can be further improved.

[Brief description of the drawings]

FIG. 1 is a control flowchart for explaining a method for controlling a floor heating device according to an embodiment of the present invention.

FIG. 2 is a system configuration diagram showing one structural example of a floor heating device.

FIG. 3 is a control flowchart for explaining a conventional method of controlling a floor heating device.

[Explanation of symbols]

 1 floor heating device 2 floor heat exchanger 3 heat source unit 4 controller

Continued on the front page (72) Inventor Masanobu Saito 2-5-2-5 Keihanhondori, Moriguchi-shi, Osaka Sanyo Electric Co., Ltd. (72) Michio Ikeda 2-5-2-5 Keihanhondori, Moriguchi-shi, Osaka Inside Sanyo Electric Co., Ltd. (72) Inventor Toshiyuki Yokozuka 2-5-5 Keihanhondori, Moriguchi-shi, Osaka Prefecture Inside Sanyo Electric Co., Ltd. (72) Inventor Koji 2-5-2 Keihanhondori, Moriguchi-shi, Osaka No. 5 Sanyo Electric Co., Ltd.

Claims (3)

[Claims] 1. A floor heat exchanger provided in parallel, and a heat source unit for supplying heating water to these floor heat exchangers, and the heat source unit supplies heating water at a relatively low temperature. A low-temperature heating mode, a control method of a floor heating device that is operated to be switched to a high-temperature heating mode to supply high-temperature heating water, wherein the plurality of floors after the heat source device is once shifted to the low-temperature heating mode When a high-temperature heating mode request is made in some of the heat exchangers, the heat source unit is returned to the high-temperature heating mode on condition that the high-temperature heating mode request is made in all other floor heat exchangers. A method for controlling a floor heating device, the method comprising: 2. A plurality of floor heat exchangers provided in parallel, and a heat source unit for supplying heating water to these floor heat exchangers, and the heat source unit supplies heating water at a relatively low temperature. A low-temperature heating mode, a control method of a floor heating device that is operated to be switched to a high-temperature heating mode to supply high-temperature heating water, wherein the plurality of floors after the heat source device is once shifted to the low-temperature heating mode When a high-temperature heating mode request is made in some of the heat exchangers, the heat source unit is switched to the high-temperature heating mode on condition that circulation of the heating water in all other floor heat exchangers is stopped. A method for controlling a floor heating device, comprising: returning a floor heating device. 3. The floor heating device according to claim 1, wherein a transition to a high-temperature heating mode is prevented after a lapse of a predetermined time from the start of operation of the floor heating device. Control method.