JP2015017727A - Floor heating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floor heating device capable of performing hot dash operation without abruptly decreasing a floor surface temperature, even in a case where a high heat radiation floor heating terminal is connected.SOLUTION: A floor heating device includes a hot dash temperature setting unit that when a floor heating panel 30 is a low heat radiation floor heating terminal, for a predetermined time from heating operation start, changes to a second setting temperature higher than a first setting temperature at the time of normal heating operation; and when a floor heating panel 30 is high heat radiation floor heating operation terminal, for a predetermined time from heating operation start, changes to a third setting temperature higher than the first setting temperature and lower than the second setting temperature.

Description

  The present invention relates to a floor heating apparatus that heats a heating medium that circulates in a circulation path to which a floor heating terminal is connected.

  2. Description of the Related Art Conventionally, there has been known a floor heating apparatus that heats a heating medium circulating in a circulation path to which a floor heating terminal is connected and heats a room by heat radiation from the floor heating terminal.

  Since the floor heating device indirectly heats the room by heat radiation from the floor heating terminal, it takes time until the room temperature reaches the target temperature at the start of heating. Therefore, in order to shorten the time until the room temperature is raised to the target temperature, the hot medium that changes the temperature of the heating medium supplied to the floor heating device to a higher temperature than during normal heating operation only for a certain period from the start of heating. A dash operation may be performed (for example, refer to Patent Documents 1 and 2).

  Patent Document 1 describes that the length of hot dash time is determined according to the measured indoor temperature.

  By the way, in the floor heating terminal, there are a high heat dissipation terminal having a high heat dissipation characteristic and a fast floor surface temperature increase, and a low heat dissipation terminal having a low heat dissipation characteristic and a slow floor surface temperature increase. When multiple floor heating terminals with different heat dissipation characteristics are connected to the floor heating device, if the hot dash operation is performed, the temperature of the room heated by the high heat dissipation terminal becomes too high above the set temperature. May cause discomfort.

  Therefore, Patent Document 2 describes that the hot dash operation time of the high heat dissipation terminal is set shorter than the hot dash operation time of the low heat dissipation terminal.

  Patent Document 3 describes that during hot dash operation, the time for setting the heating medium temperature to a high temperature is changed within the unit cycle time of the duty control according to the heat dissipation characteristics of the floor terminal device. .

JP-A-9-112932 JP 2006-17408 A JP 2002-39552 A

  In the techniques described in Patent Documents 1 and 2, when the hot dash operation is completed, in the technique described in Patent Document 3, when the period during which the set temperature of the heat medium during the hot dash operation is set to a high temperature is completed, floor heating is performed. The temperature of the heat medium supplied to the terminal is rapidly reduced to the same temperature as in the regular heating operation.

  However, when the temperature of the heat medium rapidly decreases in this way, the floor surface temperature of the high heat-dissipating terminal rapidly decreases, which may cause discomfort to people in the room.

  The present invention has been made in view of such a background, and even when a highly heat-dissipating floor heating terminal is connected, hot dash operation can be performed without abruptly lowering the floor surface temperature. An object is to provide a possible floor heating device.

  The present invention has been made to achieve the above object. The present invention includes a floor heating terminal that heats a room, a heat medium feeder that supplies a heat medium to the floor heating terminal, and a temperature of the heat medium. A heat medium temperature detection unit for detecting the floor heating terminal, a determination unit for determining whether the floor heating terminal is a high heat dissipation floor heating terminal having high heat dissipation characteristics or a low heat dissipation floor heating terminal having low heat dissipation characteristics; A temperature setting unit that sets the temperature of the heat medium during heating operation to a first set temperature; and the temperature that is detected by the heat medium temperature detection unit is set to the temperature set by the temperature setting unit. When the control unit that controls the medium feeder and the determination unit determines that the floor heating terminal is a low heat dissipation floor heating terminal, the temperature setting unit sets the temperature set by the temperature setting unit from the start of heating operation. , Changing to a second set temperature higher than the first set temperature, When the fixing unit determines that the floor heating terminal is a high heat dissipation floor heating operation terminal, the temperature set by the temperature setting unit is higher than the first set temperature in the second period from the start of heating operation. And a hot dash temperature setting unit for changing to a third set temperature lower than the second set temperature.

  According to the present invention, when the floor heating terminal is a low heat dissipation floor heating terminal, the second temperature higher than the first set temperature during the regular heating operation is set within the first period from the start of heating. The heating medium heated to the set temperature is supplied to the floor heating terminal, and hot dash operation is performed. Therefore, the room in which the floor heating terminal is installed can be quickly heated.

  On the other hand, when the floor heating terminal is a high heat dissipation floor heating terminal, the second set temperature is higher than the first set temperature during the normal heating operation during the second period from the start of heating. The heating medium heated to the lower third set temperature is supplied to the floor heating terminal and the hot dash operation is performed. Therefore, the room in which the floor heating terminal is installed can be heated to some extent quickly, and the temperature of the room to be heated becomes too higher than the target temperature to eliminate the possibility of causing discomfort to people in the room. Can do.

  And after completion | finish of a hot dash operation (2nd period progress), although the temperature of the heat medium supplied to a floor heating terminal falls from 3rd preset temperature to 1st preset temperature, the temperature fall is 2nd. It is not so large that it falls from the preset temperature to the first preset temperature. Therefore, the fear that the floor surface temperature is rapidly lowered and the person in the room is uncomfortable can be solved. Note that the first period and the second period may be the same length period or different length periods.

  In this invention, when the said determination part determines that the said floor heating terminal is a high heat dissipation floor heating operation terminal, the said hot dash temperature setting part is 3rd shorter than the said 2nd period from the said heating operation start. Preferably, the temperature set by the temperature setting unit during the period is the second set temperature, and is changed to the third set temperature after the third period has elapsed.

  In this case, during the first third period from the start of heating, the heating medium having the second set temperature higher than the third set temperature is supplied to the floor heating terminal, and the hot dash operation is performed. Therefore, the room can be rapidly heated by the floor heating terminal. Then, after the third period, the temperature of the heat medium supplied to the floor heating terminal decreases from the second set temperature to the third set temperature until the second period elapses. Therefore, it is possible to eliminate the fear that the temperature of the room to be heated will be too high than the target temperature, and that the floor surface temperature may suddenly decrease.

  Further, in the present invention, a room temperature detection unit that detects a temperature of a room heated by the floor heating terminal, and a room temperature setting unit that sets a target temperature of the room, the hot dash temperature setting unit includes the room temperature When the temperature detected by the detection unit is lower than a preset temperature difference with respect to the target temperature set by the room temperature setting unit, a preset fourth temperature higher than the third set temperature is set. It is preferable to change to a preset temperature, or to change the second period to a preset period longer than this, or to change the third period to a preset period longer than this.

  In this case, when the temperature of the room to be heated is lower than the target temperature by a preset temperature difference, the floor heating temperature can be heated more rapidly by the floor heating terminal without the floor surface temperature rapidly decreasing. .

The block diagram of the floor heating apparatus which concerns on embodiment of this invention. Flow chart of floor heating operation. The flowchart which shows the other example of floor heating operation.

  A floor heating apparatus according to an embodiment of the present invention will be described with reference to FIG. The floor heating apparatus uses water (hot water) as a heat medium.

  The floor heating apparatus includes a hot water supply unit 10 (corresponding to the heat medium feeder of the present invention) 10 and a floor heating panel 30 (corresponding to the floor heating terminal of the present invention) connected from the hot water supply unit 10 via the hot water circuit 20. And). The floor heating panel 30 is installed on the floor, and heats the room by radiating heat from the hot water circulating in the hot water circuit 20.

  The hot water supply unit 10 includes a heat source unit 11 that generates hot water, a pump 12 that circulates the hot water, a forward side hot water passage 13a through which the hot water flows out from the heat source unit 11, a return side hot water passage 13b through which the hot water flows back to the heat source unit 11, and The connecting passage 13c is connected to the hot water circuit 20 at connection points a and b. The forward-side hot water passage 13a, the return-side hot water passage 13b, and the connection passage 13c are collectively referred to as a hot water supply unit internal hot water circuit 13.

  The heat source unit 11 includes a heat exchanger 11a, a burner 11b that heats the heat exchanger 11a, a combustion fan 11c that supplies combustion air to the burner 11b, and a gas supply pipe 11d that supplies fuel gas to the burner 11b. Yes. The gas supply pipe 11d is provided with an electromagnetic valve 11e that adjusts the fuel gas supplied to the burner 11b.

  The hot water supply unit 10 is further connected to the upstream side of the return-side hot water passage 13b, and stores the hot water and absorbs the expansion and contraction of the hot water, and the upstream side of the connection point b of the connection passage 13c. And a return valve 16 provided in the outgoing hot water passage 13a. Instead of the open air cistern 14, a sealed expansion tank may be used.

  The hot water supply unit 10 is further provided in the outgoing hot water passage 13 a, provided in the outgoing hot water temperature sensor 17 a that detects the temperature of the hot water flowing out from the heat source device 11, and the return hot water passage 13 b, and flows into the heat source device 11. The return-side hot water temperature sensor 17b for detecting the temperature of the hot water to be performed (corresponding to the heat medium temperature detection unit of the present invention, hereinafter also simply referred to as the hot water temperature sensor 17b) and the overall operation of the hot water supply unit 10 The controller 18 is provided.

  The controller 18 is an electronic unit composed of a microcomputer, a memory, and the like. During operation of the floor heating panel 30, the controller 18 operates the pump 12 with the thermal valve 15 and the return valve 16 opened, and the temperature detected by the hot water temperature sensor 17b is a predetermined set temperature (for example, 40 ° C., 60 The heating amount of the burner 11b is controlled so that the temperature becomes 80 [deg.] C. and 80 [deg.] C.), hot water is supplied to the floor heating panel 30, and the heating operation is performed. The controller 18 is connected to the timer 19.

  The controller 18 determines whether the floor heating panel 30 is a high heat-dissipating floor heating terminal or a low heat-dissipating floor heating terminal, and sets the temperature of hot water during normal heating operation to the first set temperature. A temperature setting unit, a control unit that controls the hot water supply unit 10 so that the temperature detected by the hot water temperature sensor 17b becomes the temperature set by the temperature setting unit, and hot water during heating operation in the “hot dash mode” Is provided with a hot dash temperature setting unit for setting the temperature to any one of the second to fourth set temperatures. The control unit controls the heating amount of the burner 11b (burning amount of the burner 11b) by adjusting the rotation speed of the combustion fan 11c and the opening degree of the electromagnetic valve 11e.

  The hot water in the cistern 14 is supplied to the hot water circuit 20 in which the hot water returning from the hot water circuit 20 and the hot water heated by the heat source unit 11 and supplied through the outgoing hot water passage 13a are mixed.

  The floor heating panel 30 includes a floor heating operation panel 31 provided with various switches for instructing a floor heating operation, a room temperature sensor 32 for detecting the temperature of the floor and the room in which the floor heating panel 30 is installed (in the present invention). Equivalent to a room temperature detector).

  The floor heating operation panel 31 is a room temperature setting unit for manually setting a target temperature in the room, in addition to a switch (not shown) for instructing the start / stop of floor heating and the start / stop of hot dash. 31a.

  Although the details of the floor heating panel 30 are not illustrated, for example, a high heat dissipation floor heating terminal having high heat dissipation characteristics and a low heat dissipation floor heating terminal having low heat dissipation characteristics according to the thickness of the flooring material used for the flooring material for finishing. And is distinguished. In the high heat dissipation floor heating terminal, the thickness of the flooring material is as thin as 3 mm, for example, and the heat dissipation from the floor material is large. On the other hand, in the floor radiator terminal with low heat dissipation, the flooring material is as thick as 12 mm, for example, and the heat dissipation from the flooring material is small. Note that the distinction between the high heat dissipation floor heating terminal and the low heat dissipation floor heating terminal is relative, and the threshold setting for distinguishing the actual floor heating panel 30 is the designer of the floor heating apparatus, etc. Should do.

  When an instruction to start / stop floor heating is input, the floor heating operation panel 31 transmits a signal indicating the instruction to the controller 18.

  Thereby, the heat source machine 11 starts an operation | movement and the warm water supply from the warm water supply unit 10 to the floor heating panel 30 is started. The controller 18 opens and closes the duty of the thermal valve 15 (thermal valve in a predetermined cycle) so that the difference between the temperature detected by the room temperature sensor 32 and the target room temperature set by the room temperature setting unit 31a of the floor heating operation panel 31 is reduced. The ratio of the period during which 15 is open). Thereby, the amount of hot water supplied from the hot water supply unit 10 to the floor heating panel 30 is adjusted, and the amount of heat released from the floor heating panel 30 into the room is controlled.

  Hereinafter, processing when the controller 18 causes the floor heating apparatus to perform floor heating operation will be described with reference to the flowchart shown in FIG. 2.

  The controller 18 starts the process according to the flowchart of FIG. 2 when the user performs the floor heating start operation by the floor heating operation panel 31, and whether or not the execution condition of the “hot dash mode” is satisfied in STEP1. Determine whether.

  For example, it is set as an execution condition of “hot dash mode” that one hour has not passed since the start of the floor heating operation and that the user has instructed hot dash by the floor heating operation panel 31. .

  When the execution condition of the “hot dash mode” is satisfied, the process proceeds to STEP 2, and the controller 18 performs the heating operation in the “hot dash mode” according to STEP 2 and below.

  On the other hand, if the execution condition of the “hot dash mode” is not satisfied, the process branches to STEP8. In this case, the heating operation in the “hot dash mode” is not executed, and the temperature setting unit of the controller 18 sets the first set temperature (for example, 40 ° C.) during the normal heating operation as the set temperature of the hot water. . Then, as described above, the controller 18 performs the heating operation in the “steady heating mode” in which the hot water having the first set temperature is supplied from the hot water supply unit 10 to the floor heating panel 30.

  In STEP 2, the controller 18 starts the timer 19. The timer time is set to a predetermined period (for example, 30 minutes or 60 minutes, which corresponds to the first period and the second period of the present invention).

  In STEP 3, the determination unit of the controller 18 determines whether the floor heating panel 30 is a high heat dissipation floor heating terminal or a low heat dissipation floor heating terminal. This determination is made based on, for example, an identification signal received from the floor heating operation panel 31. This identification signal is, for example, a signal for identifying whether the floor heating panel 30 is a high heat dissipation floor heating terminal or a low heat dissipation floor heating terminal, and the floor heating panel 30 is a high heat dissipation floor heating terminal. It is a signal transmitted from the floor heating operation panel 31 that differs depending on whether it is a low heat dissipation floor heating terminal.

  The identification signal is determined by the installer of the floor heating panel 30 according to whether the floor heating panel 30 is a high heat dissipation floor heating terminal or a low heat dissipation floor heating terminal. It may be a signal that is transmitted based on the selection.

  If it is determined in STEP 3 that the floor heating panel 30 is a low heat dissipation floor heating terminal, the process proceeds to STEP 4. On the other hand, if it is determined that the floor heating panel 30 is a high heat dissipation floor heating terminal, the process proceeds to STEP 6.

  In STEP 4, the hot dash temperature setting unit of the controller 18 sets the hot water temperature to a preset second set temperature (for example, 80 ° C.). And the control part of the controller 18 performs the heating operation in "hot dash mode" which controls the heating amount of the burner 11b so that the temperature detected by the hot water temperature sensor 17b becomes the second set temperature (high temperature 80 ° C). control). The second preset temperature is higher than the first preset temperature.

  Then, when the timer 19 times out in the next STEP5, the process proceeds to STEP8. The timer time set in STEP 2 for the timer 19 timed up in STEP 5 corresponds to the first period of the present invention.

  If it is determined in STEP 3 that the floor heating panel 30 is a highly heat-dissipating floor heating terminal, in STEP 6, the hot dash temperature setting unit of the controller 18 sets the hot water temperature to a preset third set temperature (for example, 60 ° C.). ). And the control part of the controller 18 performs the heating operation in "hot dash mode" which controls the heating amount of the burner 11b so that the temperature detected by the hot water temperature sensor 17b becomes the third set temperature (low temperature 60 ° C). control). The third preset temperature is higher than the first preset temperature and lower than the second preset temperature.

  Then, when the timer 19 times out in the next STEP 7, the process proceeds to STEP 8. The timer time set in STEP 2 for the timer 19 timed up in STEP 7 corresponds to the second period of the present invention. Note that the timer time set in STEP 2 differs between the first period when the floor heating panel 30 is a low heat dissipation floor heating terminal and the second period when it is a high heat dissipation floor heating terminal. It may be a thing.

  When the timer expires in STEP 5 or STEP 7, in STEP 8, the controller 18 ends the “hot dash mode” and shifts to the heating operation in the “steady heating mode”.

  In heating operation in the steady heating mode, open / close duty control is performed. That is, the controller 18 sets a valve opening time per predetermined unit time (for example, 20 minutes) set in advance, and closes the thermal valve 15 (for example, 15 minutes) every unit time (for example, 20 minutes). And valve opening (for example, 5 minutes) is repeated. The valve opening time is stored in a memory (not shown) based on, for example, a temperature difference ΔT (= Td−Tt) between the detected temperature Td of the room temperature sensor 32 and the target room temperature Tt set by the room temperature setting unit 31a of the floor heating operation panel 31. It is set with reference to a map or the like stored in the section.

  As described above, when the floor heating panel 30 is a low heat dissipation floor heating terminal, the temperature is higher than the first set temperature (for example, 40 ° C.) during the regular heating operation within a predetermined period from the start of heating. The hot water heated to the second set temperature (for example, 80 ° C.) is supplied to the floor heating panel 30 and the hot dash operation is performed. Therefore, the room in which the floor heating panel 30 is installed can be quickly heated.

  On the other hand, in the case where the floor heating panel 30 is a highly heat-dissipating floor heating terminal, the temperature is higher than the first set temperature (for example, 40 ° C.) during normal heating operation within a predetermined period from the start of heating. Hot water heated to a third set temperature (for example, 60 ° C.) lower than the second set temperature (for example, 80 ° C.) is supplied to the floor heating panel 30 and a hot dash operation is performed. Therefore, the room in which the floor heating panel 30 is installed can be heated to some extent rapidly, and the temperature of the room to be heated becomes too higher than the target temperature, and there is no possibility of causing discomfort to the people in the room.

  Furthermore, after the hot dash operation is finished, the temperature of the hot water supplied to the floor heating panel 30 decreases from the third set temperature (for example, 60 ° C.) to the first set temperature (for example, 40 ° C.). As in the prior art, the temperature is not so great that the temperature falls from the second set temperature (for example, 80 ° C.) to the first set temperature (for example, 40 ° C.). Therefore, there is no possibility that the floor surface temperature is drastically lowered and uncomfortable for people in the room.

  Hereinafter, processing when the controller 18 causes the floor heating apparatus to perform floor heating operation will be described with reference to the flowchart shown in FIG. 3. This process is a modification of the process described above with reference to the flowchart of FIG. 2, and only the differences will be described.

  When the determination unit of the controller 18 determines in STEP 3 that the floor heating panel 30 is a highly heat-dissipating floor heating terminal, in STEP 11, the hot dash temperature setting unit of the controller 18 sets the second preset hot water temperature. Set to a preset temperature (eg, 80 ° C.). And the control part of the controller 18 performs the heating operation in "hot dash mode" which controls the heating amount of the burner 11b so that the temperature detected by the hot water temperature sensor 17b becomes the second set temperature (high temperature 80 ° C). control).

  Then, in the next STEP 12, when the predetermined time set in advance (for example, 15 minutes, which corresponds to the third set time of the present invention) has elapsed, the process proceeds to STEP 13.

  In STEP 13, the hot dash temperature setting unit of the controller 18 sets the hot water temperature to a preset third set temperature (for example, 60 ° C.). And the control part of the controller 18 performs the heating operation in "hot dash mode" which controls the heating amount of the burner 11b so that the temperature detected by the hot water temperature sensor 17b becomes the third set temperature (low temperature 60 ° C). control).

  Then, when the timer 19 times out in the next STEP 14, the process proceeds to STEP8.

  In STEP 8, the controller 18 ends the “hot dash mode” and shifts to the heating operation in the “steady heating mode”.

  As described above, during the first predetermined period (for example, 15 minutes) from the start of heating, warm water having the second set temperature (for example, 80 ° C.) higher than the third set temperature (for example, 60 ° C.) is heated to the floor. The hot dash operation is performed by being supplied to the panel 30. Therefore, the room in which the floor heating panel 30 is installed can be rapidly heated.

  After the first predetermined third period (for example, 15 minutes), the temperature of the hot water supplied to the floor heating panel 30 is the second set temperature (for example, 80) until the predetermined second period has elapsed. ° C) to a third set temperature (eg 60 ° C). Therefore, there is no possibility that the temperature of the room to be heated will be higher than the target temperature, and the floor surface temperature may not be rapidly lowered. Note that the third period is a part of the second period and is shorter than the second period.

  In the embodiment, according to STEP 6 in FIG. 2 and STEP 13 in FIG. 3, in the heating operation in the “hot dash mode”, the temperature detected by the hot water temperature sensor 17b becomes the third set temperature (for example, 60 ° C.). The heating operation is performed so as to control the heating amount of the burner 11b (low temperature 60 ° C. control). However, the third set temperature set here is not limited to the case where it is a predetermined constant temperature.

  For example, the third set temperature set by the hot dash temperature setting unit based on the temperature difference ΔT (= Td−Tt) between the detected temperature Td of the room temperature sensor 32 and the target room temperature Tt set by the floor heating operation panel 31. May be changed. Thus, the room in which the floor heating panel 30 is installed can be heated more rapidly without the temperature of the room to be heated becoming higher than the target temperature or the floor surface temperature rapidly decreasing.

  For example, when ΔT is equal to or greater than a predetermined temperature difference (for example, 1 ° C.), since the hot dash operation is not required, the third set temperature is set to, for example, a low temperature of 60 ° C. When ΔT is within a predetermined temperature range (for example, −1 ° C. <ΔT <1 ° C.), the third set temperature is set to, for example, an intermediate temperature of 72 ° C. When ΔT is equal to or smaller than a predetermined temperature difference (for example, −1 ° C.), rapid hot dash operation is required. Therefore, the third set temperature is set to, for example, a high temperature of 80 ° C. (fourth setting of the present invention). Corresponding to temperature).

  For example, when ΔT is within a predetermined temperature range (for example, −1 ° C. <ΔT <1 ° C.), the third set temperature is set to, for example, a medium temperature of 72 ° C. When the third set temperature is set to the medium temperature 72 ° C. and ΔT becomes a predetermined temperature difference (for example, 1 ° C.) or more, the third set temperature is changed to the low temperature 60 ° C., for example. Conversely, when ΔT becomes less than a predetermined temperature difference (for example, 0.5 ° C.) in a state where the third set temperature is set to a low temperature of 60 ° C., the third set temperature is set to, for example, the medium temperature 72 Change to ° C.

  On the other hand, when ΔT becomes a predetermined temperature difference (for example, −1 ° C.) or less in a state where the third set temperature is set to an intermediate temperature of 72 ° C., the third set temperature is set to, for example, a high temperature of 80 ° C. . Conversely, when ΔT becomes less than a predetermined temperature difference (for example, −0.5 ° C.) in a state where the third set temperature is set to a high temperature of 80 ° C., the third set temperature is set to, for example, the medium temperature. Set to 72 ° C.

  Further, in the embodiment, in STEP 6 of FIG. 2, in the heating operation in the “hot dash mode”, the burner is determined in STEP 7 so that the detected temperature of the hot water temperature sensor 17 b becomes the second set temperature (for example, 60 ° C.). The temperature heating operation is performed until a constant second period (for example, 30 minutes) preset to control the heating amount of 11b elapses (low temperature 60 ° C. control). However, the set second period time is not limited to the case where it is a predetermined period set in advance.

  For example, the second period may be changed based on the difference ΔT (= Td−Tt) between the detected temperature Td of the room temperature sensor 32 and the target room temperature Tt set by the floor heating operation panel 31.

  For example, when ΔT is within a predetermined temperature range (for example, −1 ° C. <ΔT <1 ° C.), the third period is set to 30 minutes, for example. When ΔT is equal to or greater than a predetermined temperature difference (for example, 1 ° C.), since the hot dash operation is not necessary, the second period is set to a shorter period, for example, 15 minutes. When ΔT is equal to or less than a predetermined temperature difference (for example, −1 ° C.), a long hot dash operation is required, so the third period is set to a longer period, for example, 45 minutes.

  Further, in the embodiment, in STEP 11 of FIG. 3, in the heating operation in the “hot dash mode”, the burner is determined in STEP 12 so that the detected temperature of the hot water temperature sensor 17 b becomes the second set temperature (for example, 80 ° C.). The temperature heating operation is performed until a predetermined third period (for example, 15 minutes) preset so as to control the heating amount of 11b (high temperature 80 ° C. control). However, the set third period time is not limited to the case where it is a predetermined period set in advance.

  For example, the third period may be changed based on the difference ΔT (= Td−Tt) between the detected temperature Td of the room temperature sensor 32 and the target room temperature Tt set by the floor heating operation panel 31.

  For example, when ΔT is within a predetermined temperature range (for example, −1 ° C. <ΔT <1 ° C.), the third period is set to 15 minutes, for example. When ΔT is equal to or greater than a predetermined temperature difference (for example, 1 ° C.), since the hot dash operation is not necessary, the third period is set to a shorter period, for example, 0 minutes. When ΔT is equal to or less than a predetermined temperature difference (for example, −1 ° C.), a rapid hot dash operation is required, so the third period is set to a longer period, for example, 30 minutes.

  As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to this. For example, in the embodiment, the case where the heat medium supply device of the present invention is the hot water supply unit 10 including the heat exchanger 11a and the burner 11b using gas as fuel has been described. However, the heat medium feeder of the present invention may have a configuration including a heat exchanger and an oil burner, or another configuration including an electric heater or the like.

  Moreover, in this embodiment, the floor heating apparatus using warm water as a heat medium was demonstrated. However, the heat medium of the present invention may be another type of heat medium such as an antifreeze liquid.

  In the present embodiment, the determination unit of the controller 18 determines whether the floor heating panel 30 is a high heat dissipation floor heating terminal or a low heat dissipation floor heating terminal based on an identification signal received from the floor heating operation panel 31. doing. However, the determination method in the determination unit is not limited to this. For example, the room heating sensor 30 detects the degree of increase in the room temperature during the trial operation that is performed prior to the steady floor heating operation, and estimates the heat dissipation of the flooring from the detection result, so that the floor heating panel 30 has a high heat dissipation floor. You may determine whether it is a heating terminal or a low heat dissipation floor heating terminal.

  DESCRIPTION OF SYMBOLS 10 ... Hot water supply unit (heat medium supply machine), 11 ... Heat source machine, 11a ... Heat exchanger, 11b ... Burner, 11bc ... Combustion fan, 11d ... Gas supply pipe, 12 ... Pump, 13 ... Hot water circuit in hot water supply unit 13a: Outward hot water passage, 13b: Return hot water passage, 13c ... Connection passage, 14 ... Systern, 15 ... Thermally operated valve, 16 ... Return valve, 17a ... Outward hot water temperature sensor, 17b ... Return hot water temperature sensor , Hot water temperature sensor (heat medium temperature detection unit), 18 ... controller, 19 ... timer, 20 ... hot water circuit, 30 ... floor heating panel (floor heating terminal), 31 ... floor heating operation panel, 31a ... room temperature setting unit, 32 ... Room temperature sensor (room temperature detector).

Claims (3)

A floor heating terminal that heats the room,
A heating medium feeder for supplying a heating medium to the floor heating terminal;
A heat medium temperature detector for detecting the temperature of the heat medium;
A determination unit that determines whether the floor heating terminal is a high heat dissipation floor heating terminal having high heat dissipation characteristics or a low heat dissipation floor heating terminal having low heat dissipation characteristics;
A temperature setting unit for setting the temperature of the heat medium during heating operation to a first set temperature;
A control unit that controls the heating medium supply machine so that the temperature detected by the heating medium temperature detection unit becomes the temperature set by the temperature setting unit;
When the determination unit determines that the floor heating terminal is a low heat dissipation floor heating terminal, the temperature set by the temperature setting unit is higher than the first set temperature for a first period from the start of heating operation. When the temperature is changed to the second set temperature and the determination unit determines that the floor heating terminal is a high heat dissipation floor heating operation terminal, the temperature set by the temperature setting unit is set for a second period from the start of the heating operation. And a hot dash temperature setting unit that changes the temperature to a third set temperature that is higher than the first set temperature and lower than the second set temperature. In the floor heating apparatus according to claim 1,
When the determination unit determines that the floor heating terminal is a highly heat-dissipating floor heating operation terminal, the hot dash temperature setting unit has a third period shorter than the second period from the start of the heating operation, and the temperature The floor heating device characterized in that the temperature set by the setting unit is set as the second set temperature, and is changed to the third set temperature after the third period has elapsed. The floor heating apparatus according to claim 2,
A room temperature detector for detecting the temperature of the room heated by the floor heating terminal;
A room temperature setting unit for setting a target temperature in the room,
When the temperature detected by the room temperature detection unit is lower than a preset temperature difference with respect to the target temperature set by the room temperature setting unit, the hot dash temperature setting unit is set to be higher than the third set temperature. Or the second period is changed to a preset period longer than this, or the third period is set longer than this. The floor heating device is characterized in that it is changed during a different period.

Images