JP5470810B2 - Floor heating system - Google Patents

Description

  The present invention relates to a floor heating apparatus having a plurality of floor heating panels arranged in two areas.

Some floor heating devices simultaneously perform floor heating operation in two areas using a plurality of floor heating panels arranged in the two areas. In this floor heating device, when floor heating operation of floor heating panels arranged in two areas is performed simultaneously, temperature control water of the same temperature is supplied to the floor heating panels of the two areas, The amount of temperature control water supplied to the floor heating panel is controlled by a thermal valve corresponding to them. When floor heating operation is performed at different set temperatures in the two areas, temperature-controlled water controlled based on the higher set temperature is supplied to each floor heating panel. At this time, the floor heating operation is appropriately performed in the area where the set temperature is high (high temperature area), but the floor temperature is too high in the floor heating panel in the area where the set temperature is low (low temperature area). Therefore, the floor temperature of the floor heating panel in the low temperature area is controlled by turning on / off the thermal valve corresponding to the floor heating panel in the low temperature area (see, for example, Patent Document 1).
JP 2006-329570 A

  Here, when the floor heating operation is started in a state where the temperature control water supplied to each floor heating panel is very low, the temperature difference between the temperature control water temperature and the set temperature of each area is large. For this reason, the floor temperature rise of the floor heating panel is delayed both in the high temperature area and the low temperature area. In particular, when floor heating operation is performed simultaneously in a high temperature area and a low temperature area, on / off control of the thermal valve corresponding to the floor heating panel in the low temperature area starts simultaneously with the start of the floor heating operation in both areas If it does, the problem that the floor temperature rise of the floor heating panel of a low-temperature area will become remarkably slow will generate | occur | produce.

  Then, the main objective of this invention is to provide the floor heating apparatus which can accelerate | stimulate the floor temperature rise of the several floor heating panel arrange | positioned in two areas.

A floor heating device according to a first aspect of the present invention includes one or a plurality of first floor heating panels belonging to a first area that is temperature-controlled based on a first set temperature, and a second set temperature that is different from the first set temperature. One or a plurality of second floor heating panels belonging to the second area that is temperature-controlled based on the above, and when the floor heating operation is started in at least one of the first area and the second area, The temperature of the temperature-controlled water circulating through the first floor heating panel and the second floor heating panel is based on a target water temperature that is equal to or higher than the target water temperature corresponding to the set temperature set for the area where the floor heating operation is started. When the floor heating operation is performed simultaneously in the first area and the second area, the floor heating belonging to the first area and the second area from the start of the floor heating operation in both areas is controlled. Temperature control water is supplied to the panel In addition, after the start of floor heating operation in both areas, intermittent control of the amount of regulated water supplied to the floor heating panel of the area having the lower set temperature among the first area and the second area Is started , intermittent control of the amount of temperature adjustment water supplied to the floor heating panel in the area having the lower set temperature out of the first area and the second area is the first floor heating panel and the second floor. From the point in time when the temperature of the temperature-controlled water circulating through the heating panel reaches the lower target water temperature among the first target water temperature corresponding to the first set temperature and the second target water temperature corresponding to the second set temperature. It starts after the second predetermined time has elapsed.
Here, the target water temperature equal to or higher than the target water temperature corresponding to the set temperature set for the area where the floor heating operation is started is the setting set for the two areas when the two areas are operated. When the temperature is equal to or higher than the target water temperature corresponding to the higher set temperature and one area is operated, the temperature equal to or higher than the target water temperature corresponding to the set temperature set for the one area where the operation is performed It is.

In this floor heating device, when the floor heating operation in at least one of the first area and the second area is started, the water temperature of the floor heating system (the temperature control circulating through the first floor heating panel and the second floor heating panel, respectively). Water temperature) is controlled based on a target water temperature equal to or higher than the target water temperature corresponding to the set temperature set for the area where the floor heating operation is started. Therefore, the floor temperature rise in the first floor heating panel and the second floor heating panel can be accelerated. In addition, when the floor heating operation is simultaneously performed in the first area and the second area, the temperature-controlled water is supplied to the floor heating panels belonging to the first area and the second area from the start of the floor heating operation in both areas. In addition, the intermittent control of the temperature adjustment water amount supplied to the floor heating panel in the area (low temperature area) having the lower set temperature among the first area and the second area is performed when the floor heating operation is started in both areas. Since it is not started at the same time but is started after the start of the floor heating operation in both areas, it is possible to suppress a slow rise in the floor temperature in the floor heating panel in the low temperature area.
In this floor heating device, the intermittent control of the temperature adjustment water amount supplied to the floor heating panel in the low temperature area is performed after the second predetermined time has elapsed since the water temperature of the floor heating system reached the target water temperature in the low temperature area. Since it starts, it can suppress that the floor temperature rise in the floor heating panel of a low-temperature area becomes late.

  A floor heating apparatus according to a second aspect of the present invention is the floor heating apparatus according to the first aspect of the present invention, and is supplied to a floor heating panel in an area having a lower set temperature among the first area and the second area. The intermittent control of the temperature adjustment amount is started after the first predetermined time has elapsed from the start of the floor heating operation in both areas.

  In this floor heating apparatus, when the floor heating operation in the first area and the second area is started at different set temperatures, the water temperature of the floor heating system is changed by changing the rotation speed of the water pump or the operating frequency of the heat source. Therefore, the intermittent control of the temperature adjustment water supplied to the floor heating panel in the low temperature area has been performed after the first predetermined time has elapsed from the start of the floor heating operation in both areas, and the water temperature of the floor heating system is Started after stabilizing. Therefore, the floor temperature of the floor heating panel in the low temperature area can be appropriately controlled based on the set temperature.

A floor heating apparatus according to a third aspect of the present invention is the floor heating apparatus according to the first or second aspect of the present invention , and is a floor heating panel in an area having a lower set temperature among the first area and the second area. The intermittent control of the temperature adjustment water amount supplied to is started when the temperature difference between the first target water temperature corresponding to the first set temperature and the second target water temperature corresponding to the second set temperature is larger than a certain value. It is characterized by being.

  In this floor heating device, the intermittent control of the temperature adjustment water amount supplied to the floor heating panel in the low temperature area is such that the temperature difference between the first target water temperature and the second target water temperature is larger than a certain value, and the floor heating panel in the low temperature area This is only done when the bed temperature is too high. That is, when the temperature difference between the first target water temperature and the second target water temperature is equal to or less than a certain value, based on the set temperature of the area (high temperature area) having the higher set temperature among the first area and the second area. Even if controlled temperature control water is supplied to the floor heating panel in the low temperature area, the floor temperature of the floor heating panel in the low temperature area will not rise too much. There is no problem even if intermittent control is not performed.

A floor heating apparatus according to a fourth invention is the floor heating apparatus according to any one of the first to third inventions, and is a floor of an area having a lower set temperature among the first area and the second area. The intermittent control of the temperature adjustment amount supplied to the heating panel is performed based on a first target water temperature corresponding to the first set temperature and a second target water temperature corresponding to the second set temperature.

  In this floor heating apparatus, since the intermittent control of the temperature adjustment amount supplied to the floor heating panel in the low temperature area is performed based on the first target water temperature and the second target water temperature, the floor temperature of the floor heating panel in the low temperature area is controlled. Appropriate control is possible based on the set temperature.

The floor heating apparatus according to a fifth aspect of the present invention is the floor heating apparatus according to any one of the first to fourth aspects of the present invention, wherein the set temperature is lower in the first area and the second area. A plurality of floor heating panels belong to each other, and a pulse signal used for intermittent control of the amount of regulated water supplied to at least one floor heating panel of the plurality of floor heating panels is a temperature supplied to another floor heating panel. It is characterized in that on / off is switched at a timing different from that of a pulse signal used for intermittent control of the amount of water conditioning.

  In this floor heating apparatus, the temperature control water supply timing and the temperature control water supply stop timing are shifted in at least one of the plurality of floor heating panels belonging to the low temperature area, and therefore supplied to the floor heating panel belonging to the high temperature area. It is possible to suppress fluctuations in the temperature control water amount.

A floor heating apparatus according to a sixth aspect of the present invention is the floor heating apparatus according to the fifth aspect of the present invention , wherein all of the pulse signals used for intermittent control of the temperature adjustment water amount supplied to the plurality of floor heating panels are mutually connected. It is characterized by being switched on / off at different timings.

  In this floor heating device, the temperature control water supply timing and the temperature control water supply stop timing are shifted in all of the plurality of floor heating panels belonging to the low temperature area. It is possible to prevent the amount of water from fluctuating.

  As described above, according to the present invention, the following effects can be obtained.

In the first invention, when the floor heating operation in at least one of the first area and the second area is started, the water temperature of the floor heating system (the temperature control circulating through the first floor heating panel and the second floor heating panel, respectively). Water temperature) is controlled based on a target water temperature equal to or higher than the target water temperature corresponding to the set temperature set for the area where the floor heating operation is started. Therefore, the floor temperature rise in the first floor heating panel and the second floor heating panel can be accelerated. Moreover, when the floor heating operation in the 1st area and the 2nd area is performed simultaneously, it is supplied to the floor heating panel of the area (low temperature area) with a lower set temperature among the 1st area and the 2nd area. Intermittent control of the temperature control water amount is not started at the same time when the floor heating operation is started in both areas, but is started after the start of the floor heating operation in both areas. It is possible to suppress the slow rise in the bed temperature.
In the first invention, the intermittent control of the temperature adjustment water amount supplied to the floor heating panel in the low temperature area is performed after the second predetermined time has elapsed since the water temperature of the floor heating system reached the target water temperature in the low temperature area. Since it starts, it can suppress more effectively that the floor temperature rise in the floor heating panel of a low-temperature area becomes late.

  In the second invention, when the floor heating operation in the first area and the second area is started at different set temperatures, the water temperature of the floor heating system is changed by changing the rotation speed of the water pump or the operation frequency of the heat source. Therefore, the intermittent control of the temperature adjustment water supplied to the floor heating panel in the low temperature area has been performed after the first predetermined time has elapsed from the start of the floor heating operation in both areas, and the water temperature of the floor heating system is Started after stabilizing. Therefore, the floor temperature of the floor heating panel in the low temperature area can be appropriately controlled based on the set temperature.

In the third invention, the intermittent control of the temperature adjustment water amount supplied to the floor heating panel in the low temperature area is such that the temperature difference between the first target water temperature and the second target water temperature is larger than a certain value, and the floor heating panel in the low temperature area This is only done when the bed temperature is too high. That is, when the temperature difference between the first target water temperature and the second target water temperature is equal to or less than a certain value, based on the set temperature of the area (high temperature area) having the higher set temperature among the first area and the second area. Even if controlled temperature control water is supplied to the floor heating panel in the low temperature area, the floor temperature of the floor heating panel in the low temperature area will not rise too much. There is no problem even if intermittent control is not performed.

In the fourth invention, since the intermittent control of the temperature adjustment water amount supplied to the floor heating panel in the low temperature area is performed based on the first target water temperature and the second target water temperature, the floor temperature of the floor heating panel in the low temperature area is controlled. Appropriate control is possible based on the set temperature.

In the fifth aspect of the invention, in at least one of the plurality of floor heating panels belonging to the low temperature area, the temperature control water supply timing and the temperature control water supply stop timing are shifted, so that the temperature control water supply timing is supplied to the floor heating panel belonging to the high temperature area. It is possible to suppress fluctuations in the temperature control water amount.

In the sixth aspect of the invention, in all of the plurality of floor heating panels belonging to the low temperature area, the temperature control water supply timing and the temperature control water supply stop timing are shifted, so the temperature control supplied to the floor heating panel belonging to the high temperature area It is possible to prevent the amount of water from fluctuating.

(First embodiment)
Hereinafter, a temperature control system including a floor heating device 100 according to the present invention will be described with reference to the drawings. First, the temperature control system shown in FIG. 1 uses a multi-type heat pump system. An indoor unit 18 and the temperature control water unit 1 are connected in parallel to a single outdoor unit 17. Yes. And the air conditioner is comprised by the outdoor unit 17 and the indoor unit 18, and the floor heating apparatus 100 is comprised by the outdoor unit 17, the temperature control water unit 1, floor heating panels 2a-2d, etc. FIG. FIG. 1 is a circuit diagram showing a water system and a refrigerant system showing the overall configuration of the floor heating apparatus according to the first embodiment of the present invention. FIG. 2 is an enlarged view of a part of the water system of the floor heating apparatus of FIG.

First, the water system of the floor heating apparatus 100 of the circuit diagram in FIG. 1 will be described.
The floor heating apparatus 100 includes a temperature adjustment water unit 1, four floor heating panels 2a to 2d arranged on a floor surface of a house, and an outdoor unit 17 of a heat pump system. The temperature adjustment water unit 1 and the floor heating panels 2a to 2d are connected by temperature adjustment water pipes 3 each comprising temperature adjustment water outlet pipes 53a to 53d and temperature adjustment water return pipes 55a to 55d. Then, the temperature adjustment water 8 is circulated and supplied between the temperature adjustment water unit 1 and the floor heating panels 2 a to 2 d through the temperature adjustment water pipe 3.

  The temperature control unit 1 includes a machine room 1a and a header room 1b. The machine room 1a includes a water heat exchanger 16, a simple sealed expansion tank 7, a circulation pump 9, an electrical component 33, and the like. Is provided. On the other hand, the header chamber 1b is provided with a forward header 4, a return header 6, and the like. More specifically, a forward pipe 10 is connected to the bottom of the expansion tank 7 in the machine chamber 1a, and the tip thereof is connected to the forward header 4 of the header chamber 1b via a circulation pump 9. The forward header 4 includes a substantially cylindrical header body 4a, a main pipe connection portion 4b formed at the base end portion thereof, and a plurality of the header headers 4a formed in parallel in the longitudinal direction of the outer periphery of the header body 4a (this embodiment). 4) in the form) branch pipe connection portions 51a to 51d, the forward pipe 10 is connected to the main pipe connection portion 4b, and leads to the floor heating panels 2a to 2d to the branch pipe connection portions 51a to 51d. One ends of the temperature-controlled water outlet pipes 53a to 53d are connected. These temperature control water supply pipes 53a to 53d are provided with thermally operated valves 52a to 52d, which are on-off valves corresponding to the branch pipe connection portions 51a to 51d. On the other hand, the other ends of the temperature adjustment water supply pipes 53a to 53d are connected to one ends of meandering temperature adjustment water circulation pipes 54a to 54d formed in the floor heating panels 2a to 2d. Accordingly, the temperature control water 8 in the expansion tank 7 is supplied to the forward pipe 10 by the operation of the circulation pump 9, and further divided into a plurality of temperature control water forward pipes 53a to 53d by the forward header 4, and each floor heating. Supplied to panels 2a-2d.

  On the other hand, temperature control water return pipes 55a to 55d are connected to the other ends of the temperature control water circulation pipes 54a to 54d formed in the floor heating panels 2a to 2d. Are connected to the return header 6. Similar to the forward header 4, the return header 6 is formed by arranging a substantially cylindrical header body 6 a, a main pipe connection portion 6 b formed at the base end portion thereof, and a longitudinal direction of the outer peripheral portion of the header body 6 a. A plurality of (four in this embodiment) branch pipe connection portions 56a to 56d, and the temperature control water return pipes 55a to 55d are connected to the branch pipe connection portions 56a to 56d, and the main pipe connection. A return pipe 12 is connected to the portion 4b.

  Further, the return pipe 12 and the expansion tank 7 are connected by a heat exchange path 13, which is connected to a water heat exchanger 16 that functions as a condenser or an evaporator of a refrigerant circuit described below. It is provided so that heat can be exchanged. Here, the temperature-controlled water 8 returned from the return pipe 12 is heated or cooled. The tip of the heat exchange path 13 is connected to the bottom of the expansion tank 7. As a result, the temperature-controlled water 8 circulated through the temperature-controlled water circulation pipes 54a to 54d of the floor heating panels 2a to 2d flows into the return header 6 through the temperature-controlled water return pipes 55a to 55d. The temperature-controlled water 8 flowing through the temperature-controlled water return pipes 55 a to 55 d is joined and supplied to the return pipe 12, further heated by the heat exchange path 13, and then supplied to the expansion tank 7. At this time, a return water temperature detection thermistor 35 as temperature detection means is attached to the return pipe 12, and a hydrothermal exchange temperature detection thermistor 36 is attached to the water heat exchanger 16.

  Here, the floor heating panels 2a to 2d belong to either the area I or the area II. In FIG. 2, floor heating panel 2a belongs to area I, and floor heating panels 2b to 2d belong to area II. And the floor heating panel 2a of the area I is temperature-controlled based on the temperature setting set in the wired remote controller 46, and the floor heating panels 2b to 2d of the area II are based on the temperature setting set in the wired remote control 47. The temperature is adjusted. Here, the remote controllers 46 and 47 can select any one of nine temperature setting levels for each area. When one temperature setting level is selected by the remote controllers 46 and 47, a set temperature corresponding to the temperature setting level is set for each area. Therefore, when a plurality of floor heating panels belong to each area, the plurality of floor heating panels are temperature-controlled based on the same set temperature.

  In addition, it can be changed whether floor heating panels 2a-2d belong to area I or area II. Therefore, for example, the floor heating panels 2a and 2b can be set so as to belong to the area I and the floor heating panels 2c and 2d can belong to the area II, and the floor heating panels 2a to 2c can belong to the area I and the floor heating can be set. The panel 2d may be set to belong to the area II. That is, the floor heating panels 2a to 2d can be set to belong to either the area I or the area II for each panel. Further, a plurality of floor heating panels 2a to 2d can be installed in one room, or can be installed in a plurality of rooms.

  Next, the refrigerant system will be described. In the following description, the heating operation is described as an example. In the present embodiment, a water heat exchanger 16 is used for heating the temperature-controlled water 8, and a refrigerant circulation circuit is provided between the water heat exchanger 16 and the outdoor heat exchanger 19 of the outdoor unit 17 of the multi-type heat pump system. The temperature control water 8 flowing through the heat exchange path 13 is heated. Moreover, as shown in FIG. 1, the indoor unit 18 connected to the outdoor unit 17 of this heat pump system is provided, and the outdoor unit 17 and the indoor unit 18 comprise the air conditioner. In this air conditioner, the refrigerant is connected to the compressor 21, the indoor heat exchanger 20 provided with the indoor fan 20a, the decompression mechanism 22, and the outdoor heat exchanger 19 provided with the outdoor fan 19a in the order in which the refrigerant can circulate. A circulation circuit is configured.

  More specifically, the discharge pipe 21a and the suction pipe 21b of the compressor 21 are connected to the primary port of the four-way switching valve 23, and the accumulator 31 is interposed in the suction pipe 21b, while the discharge pipe A discharge pipe temperature detection thermistor 38 is attached to 21a. Between the pair of secondary ports of the four-way switching valve 23, the first gas pipe 24a, the indoor heat exchanger 20, the first liquid pipe 24b, the pressure reducing mechanism 22, the second liquid pipe 24c, and the outdoor heat exchange are provided. The vessel 19 and the second gas pipe 24d are connected in an annular shape in order. At this time, the indoor heat exchanger 20 and the outdoor heat exchanger 19 are respectively provided with an indoor heat exchanger temperature detection thermistor 43 and an outdoor heat exchanger temperature detection thermistor 41, and further, the indoor unit 18 and the outdoor unit 17. Are attached with an indoor temperature detection thermistor 44 and an outdoor temperature detection thermistor 42, respectively.

  The first liquid pipe 24b is provided with a substantially cylindrical header 26 similar to the headers 4 and 6 provided in the temperature adjustment water unit 1. The header 26 and the indoor heat exchanger are exchanged with each other. A portion between the container 20 and the container 20 is a liquid pipe 25 a of the communication pipe 25. Similarly, a substantially cylindrical header 27 is also interposed in the first gas pipe 24 a, and a portion between the header 27 and the indoor heat exchanger 20 is a gas pipe 25 b of the communication pipe 25. Then, a liquid pipe 28 a that is another communication pipe 28 connected to the header 26 is connected to one end of the water heat exchanger 16 of the temperature control water unit 1, and is connected to the header 27. A gas pipe 28 b that is a communication pipe 28 is connected to the other end of the water heat exchanger 16.

  As a result, the outdoor heat exchanger 19, the pressure reducing mechanism 22, and the water heat exchanger 16 of the temperature adjustment water unit 1 are connected to the four-way switching valve 23 in an annular shape. The liquid pipes 25a and 28a of the connecting pipes 25 and 28 are connected to the header 26 via electric expansion valves 29 and 30, respectively. By controlling the opening and closing of the electric expansion valves 29 and 30 as appropriate, The amount of refrigerant supplied to both the unit 18 and the temperature adjustment water unit 1 can be controlled. Here, liquid tube temperature detection thermistors 39 and 37 are respectively attached to the indoor unit 18 side of the liquid pipe 25a and the temperature control unit 1 side of the liquid pipe 28a, and the outdoor of the gas pipes 25b and 28b are provided. Gas pipe temperature detection thermistors 40a and 40b are respectively attached to the machine 17 side.

  Note that the electrical component 32 provided in the outdoor unit 17 is supplied with power of, for example, 200 V and 20 A from the power source, and electrical control in the outdoor unit 17 is performed. The floor temperature controller includes a wireless remote controller 45 for starting and stopping indoor air conditioning operation, and a wired remote controller for performing similar operations for floor air conditioning as described above. 46 and 47 are provided. These remote controllers 45 to 47 make settings such as room temperature and floor temperature desired by the user. Further, the electrical component 32 of the outdoor unit 17 and the electrical component 34 provided in the indoor unit 18, and the electrical component 32 of the outdoor unit 17 and the electrical component 33 provided in the temperature adjustment water unit 1 are respectively connected to a signal / power line. Connected with. For this reason, when the user performs setting for linking the air conditioner and the temperature control unit 1, for example, in the operation start operation in the wireless remote controller 45, the operation using both the air conditioner and the temperature control unit 1 is performed. It is also possible to start.

  Next, the main structure of the control unit of the floor heating apparatus 100 of the present embodiment will be described with reference to FIG. FIG. 3 is a block diagram showing the main configuration of the control unit of the floor heating apparatus of FIG. The control unit 60 includes a target water temperature determination unit 61, a rapid warm target water temperature storage unit 62, a rapid warm time determination unit 63, an operation time timer 64, a prohibition timer 65, a rapid warm timer 66, and an expansion valve control unit. 67, a determination unit 68, a thermal valve control unit 69, and a compressor control unit 70. The control unit 60 includes a remote controller 46 for area I, a remote controller 47 for area II, a return water temperature detection thermistor 35, an outside air temperature detection thermistor 42, a compressor 21, and thermal valves 52a to 52d. The electric expansion valve 29 is connected to each other. In addition, room temperature detection thermistors 46a and 47a are disposed on the remote controllers 46 and 47, respectively.

  The target water temperature determination unit 61 determines the target water temperature of the floor heating system. In the present embodiment, the target water temperature determination unit 61 determines the target water temperature of the return water temperature detected by the return water temperature detection thermistor 35. Therefore, in the floor heating apparatus 100 of the present embodiment, the return water temperature detected by the return water temperature detection thermistor 35 is controlled based on the target water temperature determined by the target water temperature determination unit 61. Here, the determination procedure of the target water temperature of the floor heating system in the target water temperature determination unit 61 will be described with reference to FIG. FIG. 4 is a flowchart showing a procedure for determining the target water temperature of the floor heating system in the target water temperature determination unit.

  First, it is determined whether or not the floor heating operation is a rising and warming operation (step S1). In the case of the rising speed warm-up operation (S1: YES), the process proceeds to step S10, and the target water temperature of the floor heating system is determined to be a rapid warm target water temperature DMAX described later.

  On the other hand, when it is not the rising speed warm-up operation (S1: NO), the target water temperatures D (I) and D (II) of the return water temperature are determined in the procedures of steps S2 to S9 for the areas I and II. First, the target water temperatures D (I) and D (II) in the areas I and II are set to be the same as the set temperature corresponding to the temperature setting level selected by the remote controllers 46 and 47 (step S2). . Here, when the target water temperature of the return water temperature is determined, correction based on the outside air temperature, the indoor temperature, and the floor heating panel type can be performed, and any of the corrections is set by the remote controllers 46 and 47. Yes. Then, it is determined whether or not correction based on the outside air temperature is performed (step S3). Here, when the correction based on the outside air temperature is performed (S3: YES), the target water temperature is changed by the correction value based on the outside air temperature (step S4). On the other hand, when the correction by the outside air temperature is not performed (S3: NO), the process proceeds to step S5. Next, it is determined whether or not correction based on room temperature is to be performed (step S5). Here, when the correction based on the room temperature is performed (S5: YES), the target water temperature is changed by the correction value based on the room temperature (step S6). On the other hand, when the correction based on the room temperature is not performed (S5: NO), the process proceeds to step S7. Next, it is determined whether or not correction based on the floor heating panel type is performed (step S7). Here, when the correction by the floor heating panel type is performed (S7: YES), the target water temperature is changed by the correction value by the floor heating panel type (step S8). On the other hand, when the correction based on the floor heating panel type is not performed (S7: NO), the process proceeds to step S9. With the above procedure, the target water temperatures D (I) and D (II) for the areas I and II are determined (step S9). Thereafter, the target water temperature of the floor heating system is determined to be the target water temperature D (I) of area I when only the floor heating operation of area I is performed, and only the floor heating operation of area II is performed. Is determined to be the target water temperature D (II) of area II, and when the floor heating operation of area I and area I is performed at the same time, among the target water temperatures D (I) and D (II) of area I and II The higher target water temperature is determined (step S10).

  The rapid warm target water temperature storage unit 62 stores the rapid warm target water temperature DMAX that is the target water temperature of the floor heating system at the start of the floor heating operation. This rapid warming target water temperature DMAX is set separately in order to emphasize the rising speed warming property at the start of the floor heating operation. At the start of the floor heating operation, regardless of the set temperature set by the remote controllers 46 and 47, The return water temperature of the floor heating system (in this embodiment, the temperature detected by the return water temperature detection thermistor 35 is used as the water temperature of the floor heating system, and the temperature control water circulated through each floor heating panel is joined at the junction. The temperature of the temperature-adjusted water is controlled based on the rapid warm target water temperature DMAX. In the present embodiment, the quick warm target water temperature DMAX is set to a temperature equal to or higher than the target water temperature corresponding to the maximum set temperature that can be set for the areas I and II.

  The rapid warming time determination unit 63 determines a rapid warming time TS (a time during which the return water temperature of the floor heating system is controlled based on the rapid warm target water temperature DMAX) in which the rising rapid warming operation is performed. In the present embodiment, the rapid warming time TS is the rising speed of the return water temperature (the time until the return water temperature reaches the target water temperature of the floor heating system when the rapid return warming operation is not performed), the initial in the floor heating panel It is determined in consideration of the water temperature and the initial room temperature of the room where the floor heating panel is installed. For example, when the rising speed of the return water temperature is slow, the initial water temperature is low, or the initial room temperature is low, the quick warming time TS is determined to be long. Therefore, the quick warm-up time determination unit 63 determines a different quick warm-up time TS according to the conditions under which the floor heating operation is performed.

  The operation time timer 64 starts measurement when the floor heating operation in the area I and the area II becomes the operation state at the same time, and elapses a predetermined time Ta (for example, 20 minutes) as the first predetermined time. Then it becomes over.

  The prohibition timer 65 is configured such that when the floor heating operation in the area I and the area II is simultaneously performed, the return water temperature detected by the return water temperature detection thermistor 35 is the target water temperature D (I) in the areas I and II. Measurement starts when the lower target water temperature of D (II) is reached, and becomes over when a predetermined time TL (for example, 10 minutes) that is the second predetermined time elapses. Here, the prohibit timer 65 measures only once after the floor heating operation in the area I and the area II is simultaneously in the operation state. Accordingly, during the floor heating operation, the prohibit timer 65 becomes lower than the lower target water temperature after exceeding the lower target water temperature, and when the lower target water temperature is reached again. Do not start measurement.

  The rapid warming timer 66 measures the time during which the rising rapid warming operation is performed when the floor heating operation is started, and starts measurement when the floor heating operation is started in at least one of the area I and the area II. However, when the warm-up time TS during which the rising speed warm-up operation is performed elapses, it becomes over.

  The expansion valve control unit 67 controls opening and closing of the electric expansion valves 22 and 29.

In the following description, of the areas I and II, the area with the higher set temperature is the high temperature area and the area with the lower set temperature is the low temperature area. In this embodiment, the area I is the high temperature area and the area II is the low temperature area. The case where it becomes an area is demonstrated. Further, among the target water temperatures D (I) and D (II) of the areas I and II, the higher target water temperature will be described as the high temperature side target water temperature DH, and the lower target water temperature will be described as the low temperature side target water temperature DL.
DH = MAX (D (I), D (II))
DL = MIX (D (I), D (II))

  The determination unit 68 starts intermittent control of the thermal valve corresponding to the low temperature area (intermittent control of the temperature adjustment water amount supplied to the floor heating panels 2b to 2d arranged in the low temperature area (intermittent control for the low temperature area)). Determine whether or not. Specifically, the determination unit 68 determines that the difference between the high temperature side target water temperature DH and the low temperature side target water temperature DL is greater than a predetermined value that is set separately, and both the operation time timer 64 and the prohibition timer 65 are over. In addition, it is determined that intermittent control of the thermal valve corresponding to the low temperature area is started. Therefore, when the difference between the high temperature side target water temperature DH and the low temperature side target water temperature DL is equal to or less than a predetermined value that is set separately, the determination unit 67 may determine that both the operation time timer 64 and the prohibition timer 65 have exceeded. It is not determined that intermittent control of the thermal valve corresponding to the low temperature area is started.

  The thermal valve control unit 69 controls the thermal valves 52a to 52d corresponding to the heating panels 2a to 2d. The thermal valve control unit 69 is a case where the heating operation in the areas I and II is performed simultaneously, and when performing the intermittent control of the thermal valve corresponding to the low temperature area, the thermal valve corresponding to the high temperature area. Is kept open, and the thermal valve corresponding to the low temperature area is intermittently controlled so that the open state and the closed state are alternated. Thus, the intermittent control of the temperature control water amount supplied to the floor heating panels 2b-2d arrange | positioned in a low temperature area is performed by performing the intermittent control of the thermal valve corresponding to a low temperature area.

  The compressor control unit 70 controls the rotation speed of the compressor 21 based on the return water temperature of the floor heating system based on the target water temperature determined by the target water temperature determination unit 61. Therefore, in the floor heating apparatus 100 of the present embodiment, the compressor control unit 70 controls the number of revolutions of the compressor 21, thereby adjusting the amount of refrigerant supplied to the temperature adjustment water unit 1, and the floor heating system. The return water temperature becomes substantially the same as the target water temperature determined by the target water temperature determination unit 61.

  FIG. 5 shows an example of a pulse signal used for controlling the thermal valve. FIG. 5A shows a pulse signal used for controlling the thermal valve 52a corresponding to the area I which is a high temperature area, and FIGS. 5B to 5D correspond to the area II which is a low temperature area. The pulse signal used for control of thermal valve 52b-52d is shown, and while the thermal valve 52a corresponding to the floor heating panel 2a of a high temperature area is maintained in an open state, it corresponds to the floor heating panels 2b-2d of a low temperature area The case where the thermally operated valves 52b to 52d are intermittently controlled is illustrated. In FIG. 5, when the floor heating apparatus 100 operates in <Pattern D> to be described later, that is, after the floor heating operation in the area I is started, in the area II, at a set temperature lower than the area I. A pulse signal used for control when the floor heating operation is started is illustrated.

  At the time td0 when the floor heating operation in the area I is started, the pulse signal used for controlling the thermal valve 52a is switched from the closed state (OFF state) to the open state (ON state). When the floor heating operation in the area II is started at time td2, the pulse signal used for controlling the thermal valves 52b to 52d is switched from the closed state (OFF state) to the open state (ON state). . Thereafter, at time td3, as will be described in detail later, when intermittent control for the low temperature area is started, the pulse signal used for controlling the thermal valves 52b to 52d is thereafter in the open state at time TON. And the closed state at time TOFF are alternately repeated. However, in the pulse signals of the thermal valves 52b to 52d, the time TWb, TWc, and TWd are added to the time TON, respectively, with respect to the first open state time after the time td3 when the intermittent control for the low temperature area is started. Is done. Thus, by adding the times TWb, TWc, and TWd, all of these pulse signals are switched on / off at different timings.

  Next, how to determine the opening time TON and the closing time TOFF in the pulse signal used for intermittent control for the low temperature area will be described. Here, as can be seen from the fact that the opening time TON and the closing time TOFF are calculated from the high temperature side target water temperature DH and the low temperature side target water temperature DL, the intermittent control for the low temperature area is performed using the high temperature side target water temperature DH and the low temperature side target water temperature. It is performed based on the water temperature DL.

A water temperature ratio Wr of the low temperature side target water temperature DL to the high temperature side target water temperature DH is calculated from the high temperature side target water temperature DH and the low temperature side target water temperature DL.
Wr = f1 (DL, DH)

Then, the opening time TON (ON command time) is calculated from the water temperature ratio Wr.
TON = f2 (TP, Wr)
Here, the time TP indicates the sum of the opening time TON and the closing time TOFF, and the time TP is set separately.
TP = TON + TOFF

Then, the opening time TOFF (OFF command time) is calculated from the opening time TON.
TOFF = TP-TON

Next, the operation example of the floor heating apparatus 100 of this embodiment is demonstrated with reference to FIGS. Here, operations of the following <pattern A> to <pattern E> will be described.
<Pattern A>: When operation in two areas is started simultaneously <Pattern B>: When operation in one area is started and two areas are operated simultaneously after the start-up warm-up operation ends (low temperature area → high temperature area) )
<Pattern C>: When operation in one area is started and simultaneous operation in two areas is performed during start-up warm-up operation (low temperature area → high temperature area)
<Pattern D>: When operation in one area is started and simultaneous operation in two areas is performed after the start-up warm-up operation ends (high temperature area → low temperature area)
<Pattern E>: When operation in one area is started, and simultaneous operation in two areas is performed during start-up warm-up operation (high temperature area → low temperature area)

  First, the operation of <pattern A> will be described with reference to FIGS. FIG. 6 is a diagram illustrating a change in the return water temperature of the floor heating system during the operation of <Pattern A> in the floor heating apparatus. FIG. 7 is a flowchart showing an operation procedure of <Pattern A> in the floor heating apparatus. In FIG. 6, FIG. 8, FIG. 10, FIG. 12 and FIG. 14, the thick line indicates the change in the return water temperature of the floor heating system, and the broken line indicates the change in the floor temperature of the floor heating panel in the low temperature area.

  First, at time ta0, floor heating operation in areas I and II is started simultaneously (step S101). When the floor heating operation is started, the rising speed warm-up operation is performed, so that the return water temperature of the floor heating system is controlled based on the quick warm target water temperature DMAX. Therefore, the return water temperature of the floor heating system starts to rise rapidly. When simultaneous operation in two areas is started at time ta0, it is determined whether or not the difference between the target water temperature D (I) in area I and the target water temperature D (II) in area II is greater than a certain value. (Step 102). Here, when the temperature difference is larger than a certain value (S102: YES), intermittent control for the low-temperature area is performed, and therefore the start condition of the intermittent control is determined by the following procedure. In addition, when the floor heating operation in the areas I and II is started at the same time, it is determined which of the areas I and II becomes the high temperature area or the low temperature area at the start of the operation.

  Then, at the time ta0, when the simultaneous operation in the two areas is started, measurement by the operation time timer 64 is started (step S103). Further, it is repeatedly determined whether or not the return water temperature of the floor heating system is equal to or higher than the low temperature side target water temperature DL (step S104). Here, when the return water temperature reaches the low temperature side target water temperature DL at time ta1 (S104: YES), measurement by the prohibit timer 65 is started (step S105). Thereafter, it is repeatedly determined whether or not both the operation time timer 64 and the prohibition timer 65 have been exceeded (step S106). When both the operation time timer 64 and the prohibition timer 65 are exceeded at time ta2, (S106: YES), Intermittent control for the low temperature area is started (step S107). Accordingly, in a state where the return water temperature of the floor heating system is controlled based on the quick warm target water temperature DMAX, the thermal valve 52a corresponding to the high temperature area is maintained in the open state, and the thermal valve 52b corresponding to the low temperature area. ˜52d is intermittently controlled. Then, the rising speed warming operation is continued at time ta3 until the speed warming timer 66 is over (step S108). Here, the return water temperature of the floor heating system is controlled based on the quick warm target water temperature DMAX until the quick warm timer 66 is over, but thereafter it is controlled based on the high temperature side target water temperature DH. Therefore, in a state where the return water temperature of the floor heating system is controlled based on the high temperature side target water temperature DH, the thermal valve 52a corresponding to the high temperature area is maintained in the open state, and the thermal valve 52b corresponding to the low temperature area. ˜52d is intermittently controlled.

  On the other hand, when the temperature difference is equal to or less than a certain value in step S102 (S102: NO), intermittent control for the low temperature area is not performed, so that the start-up warm-up operation is continued until the warm-up time elapses. (Step S108). Therefore, at time ta3, the water temperature for returning to the floor heating system is controlled based on the rapid heating target water temperature DMAX until the quick heating timer 66 is over, and thereafter, the water temperature for returning to the floor heating system is set to the high temperature side target water temperature DH. Although controlled based on this, the thermal valve 52a corresponding to the high temperature area and the thermal valves 52b to 52d corresponding to the low temperature area are all kept open.

  Next, the operation of <Pattern B> will be described with reference to FIGS. FIG. 8 is a diagram illustrating a change in the return water temperature of the floor heating system during the operation of <Pattern B> in the floor heating device. FIG. 9 is a flowchart showing an operation procedure of <Pattern B> in the floor heating apparatus.

  First, at time tb0, the floor heating operation in one of areas I and II is started (step S201). When the floor heating operation is started, the rising speed warm-up operation is performed, so that the return water temperature of the floor heating system is controlled based on the quick warm target water temperature DMAX. Therefore, the return water temperature of the floor heating system starts to rise rapidly. At time tb1, the return water temperature of the floor heating system is controlled based on the quick warm target water temperature DMAX until the quick warm timer 66 is exceeded, but thereafter, the target in the area where the floor heating operation is started. Control is performed based on the water temperature (step 202). Thereafter, at time tb2, floor heating operation is started in the other of areas I and II, and when simultaneous operation in two areas is started (step 203), target water temperature D (I) in area I and area It is determined whether or not the difference between II and the target water temperature D (II) is greater than a certain value (step 204). Here, when the temperature difference is larger than a certain value (S204: YES), intermittent control for the low temperature area is performed, and therefore, the start condition of the intermittent control is determined by the following procedure. Note that at the stage when the simultaneous operation in the areas I and II is started (time tb2), it is determined which of the areas I and II becomes the high-temperature area or the low-temperature area. ), It cannot be determined whether the area where the floor heating operation is started first is the high temperature area or the low temperature area. However, in <Pattern B>, the floor heating operation is started first in the area II which is the low temperature area. In this case, when the rising speed warm-up operation ends, the return water temperature of the floor heating system is controlled based on the low-temperature side target water temperature DL thereafter.

  Then, at the time tb2, when the simultaneous operation in the two areas is started, measurement by the operation time timer 64 is started (step S205). Here, when the simultaneous operation in the two areas is started, the return water temperature of the floor heating system is controlled based on the high temperature side target water temperature DH, but in <pattern B>, the floor in the area II that is the low temperature area Since the heating operation is started first, thereafter, the return water temperature of the floor heating system is controlled based on the target water temperature of the area I where the floor heating operation is started at time tb2. Further, it is repeatedly determined whether or not the return water temperature of the floor heating system is equal to or higher than the low-temperature side target water temperature DL (step S206). Here, when the return water temperature reaches the low temperature side target water temperature DL at time tb3 (S206: YES), measurement by the prohibit timer 65 is started (step S207). Thereafter, it is repeatedly determined whether or not both the operation time timer 64 and the prohibition timer 65 have exceeded (step S208). When both the operation time timer 64 and the prohibition timer 65 exceed at time tb4 (S208: YES), Intermittent control for the low temperature area is started (step S209). Therefore, in a state where the return water temperature of the floor heating system is controlled based on the high temperature side target water temperature DH, the thermal valve 52a corresponding to the high temperature area is maintained in the open state, and the thermal valve 52b corresponding to the low temperature area. ˜52d is intermittently controlled.

  On the other hand, in step S204, when the temperature difference is equal to or smaller than a certain value (S204: NO), intermittent control for the low temperature area is not performed, so the return water temperature of the floor heating system is based on the high temperature side target water temperature DH. In the controlled state, the thermal valve 52a corresponding to the high temperature area and the thermal valves 52b to 52d corresponding to the low temperature area are all kept open.

  Next, the operation of <pattern C> will be described with reference to FIGS. FIG. 10 is a diagram showing a change in the return water temperature of the floor heating system during the operation of <Pattern C> in the floor heating device. FIG. 11 is a flowchart showing an operation procedure of <Pattern C> in the floor heating apparatus.

  First, at time tc0, the floor heating operation in one of areas I and II is started (step S301). When the floor heating operation is started, the rising speed warm-up operation is performed, so that the return water temperature is controlled based on the rapid warm target water temperature DMAX. Therefore, the return water temperature starts to rise rapidly. Then, at the time tc1, the other floor heating operation of the areas I and II is started, and when the simultaneous operation in the two areas is started (step S302), the target water temperature D (I) of the area I and the area II are started. It is determined whether or not the difference from the target water temperature D (II) is greater than a certain value (step 303). Here, when the temperature difference is larger than a certain value (S303: YES), intermittent control for the low temperature area is performed, and therefore, the start condition of the intermittent control is determined by the following procedure.

  Then, at the time tc1, when the simultaneous operation in the two areas is started, measurement by the operation time timer 64 is started (step S304). Further, it is repeatedly determined whether or not the return water temperature of the floor heating system is equal to or higher than the low-temperature side target water temperature DL (step S305). Here, at the stage (time tc1) when the simultaneous operation in the areas I and II is started, it is determined which of the areas I and II becomes the high temperature area or the low temperature area, but in <pattern C>, it becomes the high temperature area. Since the floor heating operation in area I is started first, at time tc1, the return water temperature is equal to or higher than the low-temperature side target water temperature DL (S305: YES), so measurement by the prohibit timer 65 is started. (Step S306). Thereafter, it is repeatedly determined whether or not both the operation time timer 64 and the prohibition timer 65 have exceeded (step S307), and when both the operation time timer 64 and the prohibition timer 65 exceed at time tc2 (S307: YES), Intermittent control for the low temperature area is started (step S308). Accordingly, in a state where the return water temperature of the floor heating system is controlled based on the quick warm target water temperature DMAX, the thermal valve 52a corresponding to the high temperature area is maintained in the open state, and the thermal valve 52b corresponding to the low temperature area. ˜52d is intermittently controlled. Then, at time tc3, the return water temperature of the floor heating system is controlled based on the quick warm target water temperature DMAX until the quick warm timer 66 is exceeded, but thereafter, the return water temperature is controlled based on the high temperature side target water temperature. (Step S309). Therefore, in a state where the return water temperature of the floor heating system is controlled based on the high temperature side target water temperature DH, the thermal valve 52a corresponding to the high temperature area is maintained in the open state, and the thermal valve 52b corresponding to the low temperature area. ˜52d is intermittently controlled.

  On the other hand, in step S303, when the temperature difference is equal to or smaller than a certain value (S303: NO), intermittent control for the low temperature area is not performed, so that the rising speed warming operation is continued until the warming time elapses. (Step S309). Therefore, at time tc3, the water temperature of the return to the floor heating system is controlled based on the quick warm target water temperature DMAX until the quick warm timer 66 is exceeded, and thereafter, the water temperature of the return from the floor heating system is set to the high temperature side target water temperature DH. Although controlled based on this, the thermal valve 52a corresponding to the high temperature area and the thermal valves 52b to 52d corresponding to the low temperature area are all kept open.

  First, the operation of <Pattern D> will be described with reference to FIGS. FIG. 12 is a diagram illustrating a change in the return water temperature of the floor heating system during the operation of <Pattern D> in the floor heating apparatus. FIG. 13 is a flowchart showing an operation procedure of <Pattern D> in the floor heating apparatus.

  First, at time td0, floor heating operation is started in either one of areas I and II (step S401). When the floor heating operation is started, the rising speed warm-up operation is performed, so that the return water temperature is controlled based on the rapid warm target water temperature DMAX. Therefore, the return water temperature starts to rise rapidly. At time td1, the return water temperature of the floor heating system is controlled based on the quick warm target water temperature DMAX until the quick warm timer 66 is exceeded, but thereafter, the target in the area where the floor heating operation is started. Control is performed based on the water temperature (step 402). Thereafter, at time td2, floor heating operation is started in the other of areas I and II, and when simultaneous operation in two areas is started (step 403), target water temperature D (I) in area I and area It is determined whether or not the difference between II and the target water temperature D (II) is greater than a certain value (step 404). Here, when the temperature difference is larger than a certain value (S404: YES), intermittent control for the low temperature area is performed, and therefore, the start condition of the intermittent control is determined by the following procedure. Note that at the stage when the simultaneous operation in the areas I and II is started (time td2), it is determined which of the areas I and II becomes the high-temperature area or the low-temperature area. ), It cannot be determined whether the area where the floor heating operation is started first is the high temperature area or the low temperature area. However, in <Pattern D>, the floor heating operation is started first in the area I which is the high temperature area. Therefore, when the rising speed warm-up operation ends, the return water temperature of the floor heating system is thereafter controlled based on the high temperature side target water temperature DH.

  Then, at the time td2, when the simultaneous operation in the two areas is started, measurement by the operation time timer 64 is started (step S405). Here, when the simultaneous operation in the two areas is started, the return water temperature of the floor heating system is controlled based on the high temperature side target water temperature DH. However, in <Pattern D>, the floor in the area I serving as the high temperature area is controlled. Since the heating operation is started first, the control is continued based on the target water temperature in the area I where the floor heating operation is started first. Further, it is repeatedly determined whether or not the return water temperature of the floor heating system is equal to or higher than the low temperature side target water temperature DL (step S406). Here, in <Pattern D>, the floor heating operation in area I, which is a high temperature area, is started first, and at time td2, the return water temperature is equal to or higher than the low temperature side target water temperature DL (S406: YES). Measurement by the prohibit timer 65 is started (step S407). Thereafter, it is repeatedly determined whether or not both the operation time timer 64 and the prohibition timer 65 have been exceeded (step S408). If both the operation time timer 64 and the prohibition timer 65 are exceeded at time td3 (S408: YES), Intermittent control for the low temperature area is started (step S409). Therefore, in a state where the return water temperature of the floor heating system is controlled based on the high temperature side target water temperature DH, the thermal valve 52a corresponding to the high temperature area is maintained in the open state, and the thermal valve 52b corresponding to the low temperature area. ˜52d is intermittently controlled.

  On the other hand, in step S404, when the temperature difference is equal to or less than a certain value (S404: NO), intermittent control for the low temperature area is not performed, so the return water temperature of the floor heating system is based on the high temperature side target water temperature DH. In the controlled state, the thermal valve 52a corresponding to the high temperature area and the thermal valves 52b to 52d corresponding to the low temperature area are all kept open.

  First, the operation of <pattern E> will be described with reference to FIGS. FIG. 14 is a diagram illustrating a change in the return water temperature of the floor heating system during the operation of <Pattern E> in the floor heating device. FIG. 15 is a flowchart showing an operation procedure of <Pattern E> in the floor heating apparatus.

  First, at time te0, floor heating operation in one of areas I and II is started (step S501). When the floor heating operation is started, the rising speed warm-up operation is performed, so that the return water temperature is controlled based on the rapid warm target water temperature DMAX. Therefore, the return water temperature starts to rise rapidly. Then, at time te1, when the other floor heating operation of the areas I and II is started and the simultaneous operation in the two areas is started (step S502), the target water temperature D (I) of the area I and the area II are started. It is determined whether or not the difference from the target water temperature D (II) is greater than a certain value (step 503). Here, when the temperature difference is larger than a certain value (S503: YES), intermittent control for the low-temperature area is performed, and therefore the start condition of the intermittent control is determined by the following procedure.

  Then, at the time te1, when the simultaneous operation in the two areas is started, the measurement by the operation time timer 64 is started (step S504). Further, it is repeatedly determined whether or not the return water temperature of the floor heating system is equal to or higher than the low-temperature side target water temperature DL (step S505). Here, at the stage (time te1) when the simultaneous operation in the areas I and II is started, it is determined which of the areas I and II becomes the high temperature area or the low temperature area, but in <pattern E>, it becomes the high temperature area. Since the floor heating operation in area I is started first, at time te1, the return water temperature is equal to or higher than the low temperature side target water temperature DL (S505: YES), so measurement by the prohibit timer 65 is started. (Step S506). Thereafter, it is repeatedly determined whether or not both the operation time timer 64 and the prohibition timer 65 have been exceeded (step S507). When both the operation time timer 64 and the prohibition timer 65 are exceeded at time te2, (S507: YES), Intermittent control for the low temperature area is started (step S508). Accordingly, in a state where the return water temperature of the floor heating system is controlled based on the quick warm target water temperature DMAX, the thermal valve 52a corresponding to the high temperature area is maintained in the open state, and the thermal valve 52b corresponding to the low temperature area. ˜52d is intermittently controlled. At time te3, the return water temperature of the floor heating system is controlled based on the quick warm target water temperature DMAX until the quick warm timer 66 is exceeded, but thereafter, the return water temperature is based on the high temperature side target water temperature DH. Control is performed (step S509). Therefore, in a state where the return water temperature of the floor heating system is controlled based on the high temperature side target water temperature DH, the thermal valve 52a corresponding to the high temperature area is maintained in the open state, and the thermal valve 52b corresponding to the low temperature area. ˜52d is intermittently controlled.

  On the other hand, in step S503, when the temperature difference is equal to or smaller than a certain value (S503: NO), intermittent control for the low temperature area is not performed, so that the rising speed warming operation is continued until the warming time elapses. (Step S509). Therefore, at time te3, the water temperature of the floor heating system return is controlled based on the quick warm target water temperature DMAX until the quick warm timer 66 is exceeded, and thereafter, the water temperature of the floor heating system return is set to the high temperature side target water temperature DH. Although controlled based on this, the thermal valve 52a corresponding to the high temperature area and the thermal valves 52b to 52d corresponding to the low temperature area are all kept open.

  As described above, in the floor heating apparatus 100 of the present embodiment, when the floor heating operation in at least one of the area I and the area II is started, the return water temperature of the floor heating system is based on the rapid warm target water temperature DMAX. Controlled. Therefore, the floor temperature rise in the floor heating panel 2a arranged in the area I and the floor heating panels 2b to 2d arranged in the area II can be accelerated. In addition, when floor heating operation is simultaneously performed in Area I and Area II, intermittent control of the amount of temperature control water supplied to the floor heating panels 2b to 2d in Area II, which is a low temperature area, is performed in two areas. Since it is not started at the same time as the start of operation but is started after the start of floor heating operation in two areas, it is possible to suppress a slow rise in floor temperature in the floor heating panels 2b to 2d in the low temperature area. .

  Further, the intermittent control of the temperature adjustment water amount supplied to the floor heating panels 2b to 2d in the low temperature area is after the predetermined time Ta has elapsed from the start of the floor heating operation in the two areas and the return water temperature of the floor heating system is stabilized. Start with. Therefore, the floor temperature of the floor heating panels 2b to 2d in the low temperature area can be appropriately controlled based on the set temperature.

  Further, the intermittent control of the temperature adjustment water amount supplied to the floor heating panels 2b to 2d in the low temperature area is started after a predetermined time TL has elapsed since the return water temperature of the floor heating system has reached the low temperature side target water temperature DL. Therefore, it can suppress that the floor temperature rise in the floor heating panels 2b-2d in a low-temperature area becomes slow.

  In addition, the intermittent control of the temperature control water amount supplied to the floor heating panels 2b to 2d in the low temperature area has a temperature difference between the high temperature side target water temperature DH and the low temperature side target water temperature DL larger than a certain value, and the floor heating in the low temperature area is performed. It is performed only when the floor temperature of the panels 2b to 2d is too high.

  Moreover, since the intermittent control of the temperature control water amount supplied to the floor heating panels 2b to 2d is performed based on the high temperature side target water temperature DH and the low temperature side target water temperature DL, the floor temperature of the floor heating panels 2b to 2d in the low temperature area is controlled. Can be appropriately controlled based on the set temperature.

  Moreover, all of the pulse signals used for intermittent control of the temperature control water amount supplied to the floor heating panels 2b to 2d are switched on / off at different timings. Accordingly, in all of the floor heating panels 2b to 2d in the low temperature area, the supply timing of the temperature adjustment water and the supply stop timing of the temperature adjustment water are shifted, so the amount of temperature adjustment water supplied to the floor heating panel 2a in the high temperature area varies. Can be prevented.

(Second Embodiment)
Next, the floor heating apparatus 101 according to the second embodiment will be described.
Although the said 1st Embodiment demonstrated the structure by which 101 A of temperature control water units which comprise the floor heating apparatus 100, and the indoor unit 18 which comprises an air conditioner were connected with respect to the outdoor unit 101B, 2nd In the embodiment, a configuration in which only the temperature control unit 101A is connected to the outdoor unit 101B will be described. In addition, the same code | symbol is attached | subjected to the same member as 1st Embodiment, and detailed description is abbreviate | omitted.

FIG. 16 is a circuit diagram showing a water system and a refrigerant system showing the overall configuration of the floor heating apparatus 101 according to the second embodiment of the present invention.
First, the water system of the floor heating apparatus 101 in the circuit diagram of FIG. 16 will be described.
The floor heating apparatus 101 includes a temperature control unit 101A, an outdoor unit 101B of a heat pump system, and four floor heating panels 2a to 2d arranged on the floor surface of the house. The temperature control unit 101A and the floor heating panels 2a to 2d are connected to each other by a temperature control pipe 3 including a temperature control water outlet pipe and a temperature control water return pipe. A water circulation path is configured between the temperature adjustment unit 101 </ b> A and the floor heating panels 2 a to 2 d through the temperature adjustment water pipe 3, and the temperature adjustment water 8 is circulated and supplied.

  As in the first embodiment, the temperature control unit 101A includes a water heat exchanger 16, a simple sealed expansion tank 7, a circulation pump 9, a forward header 4, thermal valves 52a to 52d, a return header 6, and electrical equipment. Article 33 etc. are provided. In addition, the water drain plug 111 is provided in the pipe line between the return header 6 and the water heat exchanger 16, and it is possible to discharge the temperature-controlled water flowing through the water circulation path to the outside. Further, in the pipe line between the return header 6 and the water heat exchanger 16, a return water temperature detection thermistor 35 as temperature detection means is provided, and the water heat exchanger 16 has a hydrothermal exchange temperature as temperature detection means. A detection thermistor 36 and an outgoing water temperature detection thermistor 112 as temperature detection means are attached to a pipe line between the water heat exchanger 16 and the expansion tank 7.

  Next, the refrigerant system will be described. In this floor heating apparatus 101, the water heat exchanger 16 is used for heating the temperature-controlled water 8, similarly to the floor heating apparatus 100 according to the first embodiment. And the refrigerant | coolant circulation circuit is comprised between this water heat exchanger 16 and the outdoor heat exchanger 19 of the outdoor unit 101B of a heat pump system, and the temperature control water 8 which flows through the heat exchange path 13 is heated. Yes.

  In the floor heating apparatus 101, the refrigerant is connected to the outdoor heat exchanger 19 provided with the compressor 21, the water heat exchanger 16 of the temperature control unit 101 </ b> A, the decompression mechanism 22, and the outdoor fan 19 a in the order in which the refrigerant can circulate. A circulation circuit is configured. More specifically, the discharge pipe 21 a and the suction pipe 21 b of the compressor 21 are connected to the primary port of the four-way switching valve 23. An accumulator 31 is interposed in the suction pipe 21b. On the other hand, a discharge pipe temperature detection thermistor 38 and a muffler 113 are attached to the discharge pipe 21a. Further, between the pair of secondary ports of the four-way switching valve 23, a first gas pipe 24a, a communication pipe 28b, a water heat exchanger 16, a first liquid pipe 24b, a pressure reducing mechanism 22, a second liquid pipe 24c, The outdoor heat exchanger 19 and the second gas pipe 24d are sequentially connected in an annular shape. A muffler 114 and a gas shut-off valve 115 are sequentially provided in the first gas pipe 24a from the four-way switching valve 23 side. The first liquid pipe 24b is provided with a liquid closing valve 116, a filter-equipped muffler 117, and a strainer 118 in this order from the communication pipe 28a side. In addition, a strainer 119 and a branching muffler 120 with a filter are interposed in the second liquid pipe 24c from the pressure reducing mechanism 22 side. The second liquid pipe 24 c is branched by a branching muffler 120 with a filter. The outdoor heat exchanger 19 has two pipe lines arranged in parallel, and is connected to the branched second liquid pipe 24c. And the two pipe lines in parallel in the outdoor heat exchanger 19 are comprised so that it may join by the 2nd gas pipe 24d. The outdoor heat exchanger 19 is provided with an outdoor heat exchange temperature detection thermistor 41, and an outdoor temperature detection thermistor 42 is attached to the outdoor unit 101B.

  As described above, the outdoor heat exchanger 19, the pressure reducing mechanism 22, and the water heat exchanger 16 of the temperature adjustment water unit 101A are connected to the four-way switching valve 23 in an annular shape.

  The floor heating device 101 is provided with wired remote controllers 46 and 47 for performing operations such as starting and stopping of the cooling and heating operation.

  In the first embodiment, the electrical component 32 of the outdoor unit 101B and the electrical component 33 of the temperature adjustment water unit 101A are arranged separately, but in the floor heating device 101 of the second embodiment, the electrical component The product 33 is configured to control the outdoor unit 101B and the temperature adjustment unit 101A.

  Next, the main configuration of the control unit of the floor heating apparatus 101 of the present embodiment will be described with reference to FIG. FIG. 17 is a block diagram showing the main configuration of the control unit of the floor heating apparatus of FIG. The control unit 160 includes a target water temperature determination unit 161, a quick warm target water temperature storage unit 162, a quick warm time determination unit 163, an operation time timer 64, a prohibition timer 165, a quick warm timer 66, and an expansion valve control unit. 167, a determination unit 68, a thermal valve control unit 69, and a compressor control unit 170. The control unit 60 includes a remote controller 46 for area I, a remote controller 47 for area II, a forward water temperature detection thermistor 112, an outside air temperature detection thermistor 42, a compressor 21, and thermal valves 52a to 52d. The electric expansion valve 29 is connected to each other. In addition, room temperature detection thermistors 46a and 47a are disposed on the remote controllers 46 and 47, respectively.

  The target water temperature determination unit 161 determines the target water temperature of the floor heating system. In the present embodiment, the target water temperature determination unit 161 determines the target water temperature of the forward water temperature detected by the forward water temperature detection thermistor 112. Therefore, in the floor heating apparatus 101 of the present embodiment, the outgoing water temperature detected by the outgoing water temperature detection thermistor 112 is controlled based on the target water temperature determined by the target water temperature determination unit 161. Here, the determination procedure of the target water temperature of the floor heating system in the target water temperature determination unit 161 is the same as the determination procedure of the target water temperature of the return water temperature detected by the return water temperature detection thermistor 35 of the first embodiment.

  The quick warm target water temperature storage unit 162 stores a quick warm target water temperature DMAX that is a target water temperature of the floor heating system at the start of the floor heating operation. This rapid warming target water temperature DMAX is set separately in order to emphasize the rising speed warming property at the start of the floor heating operation. At the start of the floor heating operation, regardless of the set temperature set by the remote controllers 46 and 47, The outgoing water temperature of the floor heating system (in this embodiment, the temperature detected by the outgoing water temperature detection thermistor 112 is used as the water temperature of the floor heating system, which is the temperature of the temperature-controlled water supplied to each floor heating panel). It is controlled based on the rapid warm target water temperature DMAX. In the present embodiment, the quick warm target water temperature DMAX is set to a temperature equal to or higher than the target water temperature corresponding to the maximum set temperature that can be set for the areas I and II.

  The rapid warming time determination unit 163 determines a rapid warming time TS (a time during which the going-up water temperature of the floor heating system is controlled based on the rapid warm target water temperature DMAX) in which the rising rapid warming operation is performed. In the present embodiment, the quick warming time TS is the rising speed of the outgoing water temperature (the time until the outgoing water temperature reaches the target water temperature of the floor heating system when the rising water temperature does not rise and the quick warming operation is performed), the initial temperature in the floor heating panel It is determined in consideration of the water temperature and the initial room temperature of the room where the floor heating panel is installed. For example, when the rising speed of the incoming water temperature is slow, when the initial water temperature is low, or when the initial room temperature is low, the quick warming time TS is determined to be longer. Therefore, the quick warm-up time determination unit 63 determines a different quick warm-up time TS according to the conditions under which the floor heating operation is performed.

  When the floor heating operation in the area I and the area II is in the operation state at the same time, the prohibition timer 165 determines that the outgoing water temperature detected by the outgoing water temperature detection thermistor 112 is the target water temperature D (I) in the areas I and II, Measurement starts when the lower target water temperature of D (II) is reached, and becomes over when a predetermined time TL (for example, 10 minutes) that is the second predetermined time elapses. Here, the prohibit timer 65 measures only once after the floor heating operation in the area I and the area II is simultaneously in the operation state. Accordingly, during the floor heating operation, the prohibit timer 65 becomes lower than the lower target water temperature after exceeding the lower target water temperature, and once again reaches the lower target water temperature. Do not start measurement.

  The expansion valve control unit 167 controls opening and closing of the electric expansion valve 22.

  The compressor control unit 170 controls the rotation speed of the compressor 21 based on the target water temperature determined by the target water temperature determination unit 161 for the outgoing water temperature of the floor heating system. Therefore, in the floor heating apparatus 101 of the present embodiment, the compressor control unit 170 controls the number of revolutions of the compressor 21, thereby adjusting the amount of refrigerant supplied to the temperature adjustment water unit 101A. The forward water temperature becomes substantially the same as the target water temperature determined by the target water temperature determination unit 161.

  As mentioned above, although embodiment of this invention was described based on drawing, a specific structure is not restricted to these embodiment, It can change in the range which does not deviate from the summary of invention.

  In the first and second embodiments described above, the intermittent control for the low temperature area is started when both the operation time timer 64 and the prohibition timer 65 are exceeded (the predetermined time Ta from the start of the floor heating operation in the two areas). Is started and when the predetermined time TL elapses from the time when the return water temperature of the floor heating system reaches the low temperature side target water temperature DL), intermittent control for the low temperature area is performed for floor heating in two areas. The same effect can be obtained if the floor heating device is started after the start of operation. Therefore, for example, the intermittent control for the low temperature area may be started when only the operation time timer 64 is exceeded, may be started when only the prohibition timer 65 is exceeded, or the return water temperature of the floor heating system. May be started from the time when the low temperature side target water temperature DL is reached.

  In the first and second embodiments described above, the floor heating apparatus includes the prohibit timer 65 that starts measurement when the return water temperature of the floor heating system reaches the low temperature side target water temperature DL. Measurement may be started when the return water temperature reaches the high-temperature side target water temperature DH, and another prohibition timer may be provided that becomes over when a predetermined time TH elapses. And when it is thought that the return water temperature of the floor heating system surely exceeds the high temperature side target water temperature DH, when all of the operation time timer 64, the prohibit timer 65 and another added prohibit timer are over, the low temperature area Intermittent control may be started.

  In the first embodiment described above, the return water temperature detected by the return water temperature detection thermistor 35 is controlled based on the target water temperature. In the second embodiment, the forward water temperature detected by the forward water temperature detection thermistor 112 is based on the target water temperature. However, it is not limited to this. Therefore, in the second embodiment, the return water temperature detected by the return water temperature detection thermistor 35 may be controlled based on the target water temperature. Moreover, the water temperature detected by the thermistor which can detect the temperature of the temperature control water which each circulates through the floor heating panels 2a-2c should just be controlled based on target temperature. Therefore, the position of the thermistor that detects the temperature controlled based on the target water temperature can be changed.

  In the first and second embodiments described above, intermittent control for the low temperature area is started only when the temperature difference between the high temperature side target water temperature DH and the low temperature side target water temperature DL is greater than a certain value. It may be started when the temperature difference between the water temperature DH and the low temperature side target water temperature DL is equal to or less than a certain value.

  In the first and second embodiments described above, intermittent control for the low temperature area is performed based on the high temperature side target water temperature DH and the low temperature side target water temperature DL, but is not limited thereto. For example, when the rising speed warm-up operation is performed, intermittent control for the low temperature area may be performed based on the rapid warm target water temperature DMAX and the low temperature side target water temperature DL.

In the first and second embodiments described above, a temperature equal to or higher than the target water temperature corresponding to the maximum set temperature that can be set for the area I and the area II is set as the rapid warm target water temperature DMAX during the rising rapid warm operation. However, the quick warm target water temperature DMAX may be a temperature equal to or higher than the target water temperature corresponding to the set temperature set for the areas I and II where the floor heating operation is started.
<Pattern A>: When operation in two areas starts simultaneously At this time, the quick warm target water temperature DMAX is equal to or higher than the target water temperature corresponding to the higher set temperature set for the two areas. May be set.
<Pattern B>: When the operation in one area is started and the two areas are operated simultaneously after the start-up warm-up operation ends (low temperature area → high temperature area)
At this time, the quick warm target water temperature DMAX may be set to a temperature equal to or higher than the target water temperature corresponding to the set temperature set for the low temperature area.
<Pattern C>: When operation in one area is started and simultaneous operation in two areas is performed during start-up warm-up operation (low temperature area → high temperature area)
At this time, the rapid warm target water temperature DMAX is set to a temperature equal to or higher than the target water temperature corresponding to the set temperature set for the low temperature area while the operation of one area is being performed, and the simultaneous operation of the two areas is performed. Is performed, the temperature may be set to a temperature equal to or higher than the target water temperature corresponding to the set temperature set for the high temperature area.
<Pattern D>: When operation in one area is started and simultaneous operation in two areas is performed after the start-up warm-up operation ends (high temperature area → low temperature area)
At this time, the quick warm target water temperature DMAX may be set to a temperature equal to or higher than the target water temperature corresponding to the set temperature set for the high temperature area.
<Pattern E>: When operation in one area is started, and simultaneous operation in two areas is performed during start-up warm-up operation (high temperature area → low temperature area)
At this time, the quick warm target water temperature DMAX may be set to a temperature equal to or higher than the target water temperature corresponding to the set temperature set for the high temperature area.

  In the first and second embodiments described above, all the pulse signals used for intermittent control of the thermal valves 52b to 52d corresponding to the floor heating panels 2b to 2d arranged in the low temperature area are turned on / off at different timings. Although OFF is switched, at least one of the pulse signals used for intermittent control of the thermal valves 52b to 52d may be switched ON / OFF at a timing different from other pulse signals. Further, all of the pulse signals used for intermittent control of the thermal valves 52b to 52d may be switched on / off at the same timing. In this case, the pulse signals are supplied to the floor heating panel 2a disposed in the high temperature area. The amount of regulated water used may vary.

  If this invention is utilized, the floor temperature rise in the floor heating panel arrange | positioned at two areas can be accelerated.

It is a circuit diagram which shows the water system and refrigerant system which show the whole structure of the floor heating apparatus which concerns on 1st Embodiment of this invention. It is the figure which expanded a part of water system of the floor heating apparatus of FIG. It is a block diagram which shows the main structures of the control unit of the floor heating apparatus of FIG. It is a flowchart which shows the determination procedure of the target water temperature in a target water temperature determination part. An example of a pulse signal used for intermittent control of the thermal valve is shown. It is a figure which shows the change of the return water temperature of the floor heating system at the time of the operation | movement of <pattern A> in a floor heating apparatus. It is a flowchart which shows the operation | movement procedure of <pattern A> in a floor heating apparatus. It is a figure which shows the change of the return water temperature of the floor heating system at the time of the operation | movement of <pattern B> in a floor heating apparatus. It is a flowchart which shows the operation | movement procedure of <pattern B> in a floor heating apparatus. It is a figure which shows the change of the return water temperature of the floor heating system at the time of operation | movement of <pattern C> in a floor heating apparatus. It is a flowchart which shows the operation | movement procedure of <pattern C> in a floor heating apparatus. It is a figure which shows the change of the return water temperature of the floor heating system at the time of the operation | movement of <pattern D> in a floor heating apparatus. It is a flowchart which shows the operation | movement procedure of <pattern D> in a floor heating apparatus. It is a figure which shows the change of the return water temperature of the floor heating system at the time of the operation | movement of <pattern E> in a floor heating apparatus. It is a flowchart which shows the operation | movement procedure of <pattern E> in a floor heating apparatus. It is a circuit diagram which shows the water system and refrigerant system which show the whole structure of the floor heating apparatus which concerns on 2nd Embodiment of this invention. It is a block diagram which shows the main structures of the control unit of the floor heating apparatus of FIG.

2a to 2d Floor heating panels 61, 161 Target water temperature determination unit 62, 162 Rapid warm target water temperature storage unit 63, 163 Rapid warm time determination unit 64 Operating time timer 65, 165 Prohibition timer 66 Rapid warm timer 67, 167 Expansion valve control unit 68 Judgment part 69 Thermal valve control part 70, 170 Compressor control part 100, 101 Floor heating device

Claims (6)

One or more first floor heating panels belonging to a first area that is temperature-controlled based on a first set temperature;
Including one or more second floor heating panels belonging to a second area that is temperature-controlled based on a second set temperature different from the first set temperature;
When floor heating operation in at least one of the first area and the second area is started, the temperature of the temperature-controlled water circulating through the first floor heating panel and the second floor heating panel respectively is determined as floor heating operation. Is controlled based on a target water temperature that is equal to or higher than the target water temperature corresponding to the set temperature set for the area that has started, and the floor heating operation in the first area and the second area is performed simultaneously The temperature control water is supplied to the floor heating panels belonging to the first area and the second area from the start of the floor heating operation in both areas, and after the start of the floor heating operation in both areas, Intermittent control of the temperature adjustment water amount supplied to the floor heating panel in the area having the lower set temperature among the first area and the second area is started ,
The intermittent control of the temperature adjustment amount of water supplied to the floor heating panel of the area having the lower set temperature among the first area and the second area is performed by controlling the first floor heating panel and the second floor heating panel, respectively. A second predetermined time from the time when the temperature of the circulating temperature-controlled water reaches the lower target water temperature among the first target water temperature corresponding to the first set temperature and the second target water temperature corresponding to the second set temperature. The floor heating device is started after the elapse of time .   The intermittent control of the temperature adjustment water amount supplied to the floor heating panel in the area having the lower set temperature among the first area and the second area is the first predetermined time from the start of the floor heating operation in both areas. The floor heating apparatus according to claim 1, wherein the floor heating apparatus is started after elapses. In the first area and the second area, the intermittent control of the temperature adjustment amount supplied to the floor heating panel in the area with the lower set temperature is the first target water temperature corresponding to the first set temperature and the first temperature. The floor heating device according to claim 1 or 2 , wherein the floor heating device is started when a temperature difference from a second target water temperature corresponding to two set temperatures is larger than a certain value.   The intermittent control of the temperature adjustment amount of water supplied to the floor heating panel in the lower area of the first area and the second area is controlled by the first target water temperature corresponding to the first set temperature and the first temperature. It is based on the 2nd target water temperature corresponding to 2 preset temperature, The floor heating apparatus of any one of Claims 1-3 characterized by the above-mentioned. A plurality of floor heating panels belong to an area having a lower set temperature among the first area and the second area,
The pulse signal used for intermittent control of the temperature adjustment water amount supplied to at least one floor heating panel of the plurality of floor heating panels is a pulse signal used for intermittent control of the temperature adjustment water amount supplied to another floor heating panel. The floor heating device according to any one of claims 1 to 4 , wherein the on / off is switched at a timing different from the above. The floor heating apparatus according to claim 5 , wherein all of the pulse signals used for intermittent control of the temperature control water amount supplied to the plurality of floor heating panels are switched on / off at different timings.

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