JP2012083049A - Heating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating apparatus capable of suppressing the deterioration of heat efficiency of the heating apparatus by dividing a plurality of floor heating panels into a plurality of groups and by configuring the floor heating panels so as to be connected with a heating unit different for each floor heating panel constituting the one group.SOLUTION: The heating apparatus 1 includes: an outdoor machine (heat pump unit) 10; a plurality of heating units 40A, 40B which are connected to the outdoor machine 10 respectively and regulate temperature of temperature-control water; and a plurality of groups of heating terminals 70A, 70B which are disposed for each of heating units 40A, 40B and to which the temperature-controlled water is supplied from each of the plurality of heating units 40A, 40B.

Description

  The present invention relates to a heating apparatus including a heating unit that heats temperature-controlled water supplied to a heating terminal.

  As a heating device, a device including a heat pump unit, a floor heating panel that is a heating terminal, and a heating unit that heats hot water supplied to the floor heating panel by a refrigerant supplied from the heat pump unit is known (for example, Patent Document 1). The heating unit includes a water heat exchanger that exchanges heat between the refrigerant supplied from the heat pump unit and the hot water supplied to the heating terminal. Further, only one heating unit is provided for one heat pump unit, and the heat pump unit and the heating unit are integrally configured as one outdoor unit. Therefore, when a plurality of floor heating panels are provided, all the floor heating panels are connected to one heating unit, and hot water heated in the heating unit is supplied to all the heating units.

  Moreover, in the heating apparatus of patent document 1, the hot water of the same temperature is supplied with respect to four floor heating panels from a heating unit. The four floor heating units are divided into two areas, and the set temperature can be set separately for each area. Here, when different set temperatures are set in the two areas, the temperature of the hot water supplied to the floor heating panel is determined based on the higher set temperature. The thermal valves corresponding to the floor heating panel in the area where the set temperature is high are maintained in the open state, and the thermal valves corresponding to the other floor heating panels are opened and closed according to the set temperature. It can be switched alternately.

JP 2009-139082 A

  Thus, in the configuration in which hot water having the same temperature is supplied to a plurality of floor heating panels, when different set temperatures are set for the two areas, the determination is made based on the higher set temperature. Since the hot water having the temperature set is supplied to all the floor heating panels, the hot water having an unnecessarily high temperature is supplied to the floor heating panels in the area where the set temperature is low. Therefore, the thermal efficiency is lowered, and the thermal efficiency is significantly deteriorated when the temperature range of the set temperature set in the two areas is wide. In addition, in floor heating panels in areas where the set temperature is low, the temperature of the floor heating panel becomes unstable and comfort decreases because the corresponding thermal valve can be switched alternately between the open state and the closed state. There is.

  Therefore, as a result of studying to solve the above problems, the present inventor does not connect all of the plurality of floor heating panels to one heating unit, but divides the plurality of floor heating panels into a plurality of groups. It has been found that if the floor heating panels constituting the group are connected to different heating units, it is possible to suppress a decrease in thermal efficiency and a decrease in comfort.

  A heating device according to a first aspect of the present invention is provided with a heat pump unit, a plurality of heating units that are respectively connected to the heat pump unit and adjust the temperature of temperature-controlled water, and the plurality of heating units. And a plurality of groups of heating terminals to which temperature-controlled water is supplied from each.

In this heating apparatus, since a plurality of heating units are connected to one heat pump unit, and a group of heating terminals are connected to each heating unit, the temperature of the temperature-controlled water supplied to the heating terminals is controlled for each heating unit. Can be adjusted.
Therefore, for example, in the case of a configuration in which a plurality of heating terminals connected to one heating unit are divided into two or more areas and the set temperature is individually set for each area, one heating is provided as in a conventional heating device. All the heating terminals connected to the unit are divided into two areas, and a larger number of set temperatures can be set as compared with the case where the set temperature is set for each area.

  In addition, for example, even in a configuration in which temperature-controlled water having the same temperature is supplied to a plurality of heating terminals that constitute a group of heating terminals for each heating unit, the temperature of the temperature-controlled water supplied to the heating terminals is set for each heating unit. Since it can be changed, all the heating terminals are connected to one heating unit as in the conventional heating device, and it is necessary compared to the case where temperature-controlled water of the same temperature is supplied to all the heating terminals As described above, the number of heating terminals to which high-temperature water is supplied is reduced. Therefore, the thermal efficiency in the heating device can be improved.

  Further, for example, in addition to the configuration exemplified above, in the configuration in which the temperature of the heating terminal having a low set temperature is adjusted by intermittently controlling the on-off valve (control that alternately repeats the open state and the closed state) As described above, since there are fewer heating terminals to which temperature-controlled water having a higher temperature than necessary is supplied, all the heating terminals are connected to one heating unit as in the conventional heating device, and the same temperature is maintained. Compared with the case where the temperature-controlled water is supplied to all the heating terminals, the opening / closing operation of the thermal valve can be reduced. Therefore, comfort can be improved because the temperature of the heating terminal is stabilized.

  A heating device according to a second invention is the heating device according to the first invention, wherein the plurality of groups of heating terminals includes two or more heating terminals belonging to any of a plurality of areas in which the set temperatures are changed separately. The heating terminal is included, and the group of heating terminals is supplied with temperature-controlled water having the same temperature from one heating unit to which the group of heating terminals is connected.

  In this heating apparatus, the set temperature can be set to a different temperature for each area while supplying temperature-controlled water having the same temperature to two or more heating terminals constituting a group of heating terminals.

  A heating device according to a third invention includes, in the first invention, the group of heating terminals including a group of heating terminals each having two or more heating terminals whose set temperatures are changed separately, The group of heating terminals is characterized in that temperature-controlled water having the same temperature is supplied from one heating unit to which the group of heating terminals is connected.

  In this heating apparatus, the set temperature of the heating terminal can be set to different temperatures while supplying temperature-controlled water at the same temperature to two or more heating terminals that constitute a group of heating terminals.

  The heating device according to a fourth invention is characterized in that, in the second or third invention, the same temperature is determined based on a highest set temperature among set temperatures in the group of heating terminals.

  In this heating apparatus, since the temperature of the temperature-controlled water to be supplied is determined based on the highest set temperature in the group of heating terminals, the temperature of the heating terminals constituting the group of heating terminals becomes the set temperature. The temperature can be adjusted easily.

  A heating device according to a fifth aspect of the present invention is the heating device according to any one of the second to fourth aspects, wherein a plurality of on-off valves that change the amount of temperature-controlled water respectively supplied to the two or more heating terminals; Control means for controlling the on-off valve, wherein the control means controls the on-off valve based on the set temperature and the same temperature of the two or more heating terminals.

  In this heating device, the temperature can be easily adjusted to a different temperature for each heating terminal by changing the amount of temperature-controlled water supplied to the heating terminal by the opening / closing valve.

  A heating device according to a sixth invention is the heating device according to any one of the second to fifth inventions, wherein the plural groups of heating terminals include at least two of the group of heating terminals, and the at least two groups of heating terminals. Is characterized in that temperature-controlled water having different temperatures is supplied to each heating unit.

  In this heating apparatus, temperature-controlled water with an appropriate temperature can be supplied to the heating terminal according to the set temperature range of the heating terminals that constitute each group.

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

In the first invention, since a plurality of heating units are connected to one heat pump unit, and a group of heating terminals are connected to each heating unit, the temperature of the temperature-controlled water supplied to the heating terminals for each heating unit Can be adjusted.
Therefore, for example, in the case of a configuration in which a plurality of heating terminals connected to one heating unit are divided into two or more areas and the set temperature is individually set for each area, one heating is provided as in a conventional heating device. All the heating terminals connected to the unit are divided into two areas, and a larger number of set temperatures can be set as compared with the case where the set temperature is set for each area.

  In addition, for example, even in a configuration in which temperature-controlled water having the same temperature is supplied to a plurality of heating terminals that constitute a group of heating terminals for each heating unit, the temperature of the temperature-controlled water supplied to the heating terminals is set for each heating unit. Since it can be changed, all the heating terminals are connected to one heating unit as in the conventional heating device, and it is necessary compared to the case where temperature-controlled water of the same temperature is supplied to all the heating terminals As described above, the number of heating terminals to which high-temperature water is supplied is reduced. Therefore, the thermal efficiency in the heating device can be improved.

  Further, for example, in addition to the configuration exemplified above, in the configuration in which the temperature of the heating terminal having a low set temperature is adjusted by intermittently controlling the on-off valve (control that alternately repeats the open state and the closed state) As described above, since there are fewer heating terminals to which temperature-controlled water having a higher temperature than necessary is supplied, all the heating terminals are connected to one heating unit as in the conventional heating device, and the same temperature is maintained. Compared with the case where the temperature-controlled water is supplied to all the heating terminals, the opening / closing operation of the thermal valve can be reduced. Therefore, comfort can be improved because the temperature of the heating terminal is stabilized.

  In 2nd invention, while setting the temperature control water of the same temperature to two or more heating terminals which comprise a group of heating terminals, a preset temperature can be made into a different temperature for every area.

  In 3rd invention, while setting the temperature control water of the same temperature to two or more heating terminals which comprise a group of heating terminals, the setting temperature of a heating terminal can be made into a different temperature.

  In 4th invention, since the temperature of the temperature control water supplied is determined based on the highest preset temperature in a group of heating terminals, the temperature of the heating terminal which comprises a group of heating terminals becomes set temperature. The temperature can be adjusted easily.

  In 5th invention, by changing the quantity of the temperature control water supplied to a heating terminal with an on-off valve, it can be easily temperature-controlled to a different temperature for every heating terminal.

  In 6th invention, according to the setting temperature range of the heating terminal which comprises each group, the temperature control water of appropriate temperature can be supplied to a heating terminal.

It is a circuit diagram showing a schematic structure of a heating device concerning a 1st embodiment of the present invention. It is a circuit diagram which shows the detailed structure of the heating unit in the heating apparatus of FIG. It is a block diagram which shows schematic structure of the control part which controls the heating apparatus of FIG. It is a block diagram which shows schematic structure of the control part of the heating apparatus concerning 2nd Embodiment of this invention.

[First embodiment]
Hereinafter, the heating apparatus 1 concerning the 1st Embodiment of this invention is demonstrated, referring drawings.

<Overall configuration of heating device 1>
As shown in FIG. 1, the heating apparatus 1 of the present embodiment includes an outdoor unit (heat pump unit) 10, a plurality (two in the present embodiment) of heating units 40 </ b> A and 40 </ b> B connected to the outdoor unit 10, and heating. A plurality (four in this embodiment) of floor heating panels (heating terminals) 70A connected to the unit 40A and a plurality (four in this embodiment) of floor heating panels (heating terminals) connected to the heating unit 40B. 70B and a remote controller 2 are provided. In addition, the four floor heating panels 70A connected to the heating unit 40A and the four floor heating panels 70B connected to the heating unit 40B respectively constitute “a group of heating terminals” of the present invention. In the heating device 1, the outdoor unit 10 and the heating units 40A and 40B constitute a refrigerant circulation circuit. Moreover, the warm water circulation circuit is comprised by the heating unit 40A and the four floor heating panels 70A. Moreover, the warm water circulation circuit is comprised by the heating unit 40B and the four floor heating panels 70B.

<Configuration of refrigerant circulation circuit of heating device 1>
Each part which comprises the refrigerant | coolant circulation circuit of the heating apparatus 1 is demonstrated.
The outdoor unit 10 has a plurality of pairs (two pairs in the present embodiment) of connecting portions 11a and 11b to which the heating units 40A and 40B are connected. The outdoor unit 10 includes a refrigerant flow path formed by connecting the compressor 12, the outdoor heat exchanger 15, and the two electric expansion valves 16 in this order between the connection part 11a and the connection part 11b. More specifically, the discharge pipe 12a and the suction pipe 12b of the compressor 12 are connected to the primary port of the four-way switching valve 13 in the refrigerant flow path. An accumulator 14 is interposed in the suction pipe 12b. A discharge pipe temperature detection thermistor 25 is attached to the discharge pipe 12a. On the other hand, to the secondary port of the four-way switching valve 13, a first gas pipe 20 a reaching the header 17 and a second gas pipe 20 b reaching the outdoor heat exchanger 15 are connected. The header 17 branches the first gas pipe 20 a into two branch gas pipes 21. The end of each branch gas pipe 21 opposite to the header 17 side is connected to the connection portion 11a. Each branch gas pipe 21 is provided with a gas pipe temperature detection thermistor 26.

  Two branch liquid pipes 22 extending from the header 18 are connected to the two connection portions 11b. An electric expansion valve 16 is interposed in each of the two branch liquid pipes 22. The two electric expansion valves 16 can change the amount of refrigerant sent to the heating units 40A and 40B by changing their opening degrees, and can function as a decompression mechanism. Further, a liquid pipe temperature detection thermistor 27 is attached between the electric expansion valve 16 and the connection portion 11b in each branch liquid pipe 22. The header 18 joins the two branch liquid pipes 22 to the liquid pipe 20c. The end of the liquid pipe 20 c opposite to the header 18 side is connected to the outdoor heat exchanger 15. The outdoor heat exchanger 15 is provided with an outdoor heat exchanger temperature detection thermistor 28.

  The outdoor unit 10 includes an outside temperature detection thermistor 29 and a control unit 19 in addition to the above-described refrigerant flow path. The control unit 19 is connected to the control unit 50 of the heating units 40A and 40B through a signal line.

  The heating units 40A and 40B have the same configuration as each other, and include connection portions 41a and 41b for connecting to the outdoor unit 10, and refrigerant passages connecting the connection portions 41a and 41b, respectively. . A water heat exchanger 42 is interposed in the refrigerant flow path. An outflow refrigerant temperature detection thermistor 57 is attached to the pipe connecting the water heat exchanger 42 and the connecting portion 41b. The heating units 40A and 40B are provided with a control unit 50 that performs electrical control of the heating units 40A and 40B.

  In the heating device 1, the connection part 11a of the outdoor unit 10 and the connection part 41a of the heating units 40A and 40B are connected by the connecting pipe 9a, respectively, and the connection part 11b of the outdoor unit 10 and the connection part of the heating units 40A and 40B. 41b is connected to each other by a connecting pipe 9b. The outdoor unit 10 has the above-described refrigerant flow path accommodated in the housing 10a, and the heating units 40A and 40B have the above-described refrigerant flow path and a hot water flow path described later in the housing 40a, respectively. Is contained. That is, the outdoor unit 10 and the heating units 40A and 40B are configured separately.

  In the heating apparatus 1, the refrigerant flow path configured in the outdoor unit 10 and the refrigerant flow path configured in the heating units 40A and 40B are connected by the connecting pipes 9a and 9b, and the compressor 12 and the water heat exchange are connected. A refrigerant circulation circuit in which the vessel 42, the electric expansion valve 16, and the outdoor heat exchanger 15 are connected in order is formed. In this refrigerant circulation circuit, the refrigerant sent from the outdoor unit 10 through the connecting pipe 9a flows into the heating units 40A and 40B from the connection part 41a, passes through the water heat exchanger 42, and then connects to the connection part 41b. Spill from.

<Configuration of hot water circulation circuit of heating device 1>
Next, each part which comprises the warm water circulation circuit of the heating apparatus 1 is demonstrated.
As described above, the heating units 40A and 40B have the same configuration. Hereinafter, only the heating unit 40A will be described, and the description of the heating unit 40B will be omitted. As shown in FIG. 2, in addition to the above-described refrigerant flow path, the heating unit 40A includes four pairs of connection portions 43a and 43b for connecting the four floor heating panels 70A, a connection portion 43a, and a connection portion 43b. And a hot water channel connecting the two.

  Four return branch pipes 51 extending from the header 47 are connected to the four connection portions 43a. The header 47 joins the four return branch pipes 51 to the return pipe 50a. The end of the return pipe 50 a opposite to the header 47 side is connected to the water heat exchanger 42. A return water temperature detection thermistor 58 is attached to the return pipe 50a.

  In addition to the return pipe 50a described above, the water heat exchanger 42 is connected with an outgoing pipe 50b that reaches the header 48. An expansion tank 45 and a circulation pump 46 are interposed in the forward pipe 50b in order from the water heat exchanger 42 side. Further, a forward water temperature detection thermistor 59 is provided between the expansion tank 45 and the circulation pump 46 in the forward pipe 50b. The header 48 branches the forward pipe 50 b into four forward branch pipes 52. The end of each forward branch pipe 52 opposite to the header 48 side is connected to the connection portion 43b. Thermally operated valves (open / close valves) 53 are interposed in the four forward branch pipes 52, respectively. The four thermal valves 53 are for changing the flow rate of the temperature-controlled water sent to the floor heating panel 70A connected to the heating unit 40A.

  Four floor heating panels 70A are respectively attached to the four pairs of connection portions 43a and 43b provided in the heating unit 40A. And the connection part 43a and the connection part 43b as an edge part of the warm water flow path comprised in the heating unit 40A are connected via the floor heating panel 70A, and the water heat exchanger 42, the circulation pump 46, the thermal motion A hot water circulation circuit is formed in which the valve 53 and the floor heating panel 70A are sequentially connected.

  Therefore, in the heating apparatus 1, the temperature-controlled water of the same temperature heated by the water heat exchanger 42 in which the refrigerant from the outdoor unit 10 flows is supplied to the four floor heating panels 70A, respectively. The refrigerant that has flowed out can be returned to the water heat exchanger 42. At this time, the flow rate of the refrigerant supplied to each floor heating panel 70 </ b> A can be individually changed by the thermal valve 53.

<Remote control 2>
Two remote controllers 2 are provided for each of the heating units 40A and 40B. In the remote controller 2, operation of starting / stopping operation, temperature setting of the floor heating panels 70 </ b> A and 70 </ b> B, and the like are performed by the user.

In the heating apparatus 1 of the present embodiment, the four floor heating panels 70A connected to the heating unit 40A are divided into two areas 71 and 72, and the set temperature can be individually changed for each area. Whether the four floor heating panels 70A belong to any of the areas 71 and 72 can be changed by operating the remote controller 2. In FIG. 2, three floor heating panels 70 </ b> A belong to area 71, and one heating unit 70 </ b> B belongs to area 72.
Similarly, the four floor heating panels 70B connected to the heating unit 40B are divided into two areas 73 and 74, and the set temperature can be individually changed for each area. Whether the four floor heating panels 70B belong to any of the areas 73 and 74 can be changed by operating the remote controller 2. In FIG. 2, two floor heating panels 70B belong to areas 73 and 74, respectively.

  The remote controller 2 can select one of nine set temperature levels of levels 0 to 8. When one set temperature level is selected, a set temperature corresponding to the set temperature level is set. Is done. Level 0 is a keep operation mode that is set during going out.

<Control unit 60>
Next, the control part 60 which controls the heating apparatus 1 is demonstrated, referring FIG. The control unit 60 is constructed by the control unit 19 provided in the outdoor unit 10 and the control unit 50 provided in the heating units 40A and 40B as described above. The control unit 60 includes a storage unit 61, a target water temperature determination unit 62, a thermal valve control unit 63, a circulation pump control unit 64, an expansion valve control unit 65, and a compressor control unit 66.

  The storage unit 61 stores a set temperature, a control program, a data table necessary for executing the control program, and the like.

The target water temperature determination unit 62 determines the target temperature of the temperature-controlled water in the heating units 40A and 40B, respectively. Specifically, based on the set temperature of the higher of the set temperature of the area 71, and determines the target temperature T _A of the heating unit 40B of the return pipe 50a to flow temperature regulating water (return hot water), area among the setting temperatures of 73 and 74 based on the higher set temperature, determines the target temperature T _B of the return hot water flowing through the return pipe 50a of the heating unit 40B.

  The thermal valve controller 63 controls opening and closing of the thermal valve 53 provided in the heating units 40A and 40B. Specifically, the thermal valves 53 corresponding to the floor heating panels 70A and 70B that have been operated with the remote controller 2 are opened. If the set temperatures of the two areas 71 and 72 are different, the thermal valve 53 corresponding to the floor heating panel 70A in the area with the higher set temperature is maintained in the open state, and the area with the lower set temperature With respect to the thermal valve 53 corresponding to the floor heating panel 70A, control (intermittent control) is performed in which the valve is alternately switched between the open state and the closed state according to each set temperature. In the intermittent control, the time ratio between the open state and the closed state is adjusted according to the difference between the set temperature and the higher set temperature. The thermal valves 53 corresponding to the floor heating panels 70B belonging to the two areas 73 and 74 are similarly controlled.

  The circulation pump control unit 64 controls the number of rotations of the circulation pump 46 provided in the heating units 40A and 40B. The expansion valve control unit 65 controls the opening degrees of the two electric expansion valves 16 provided in the outdoor unit 10. The compressor control unit 66 controls the operating frequency of the compressor 12 provided in the outdoor unit 10.

Circulation pump control unit 64, the expansion valve control unit 65, and the compressor control unit 66 performs control based on the target temperature T _A of the determined by the target water temperature determination section 62 temperature controlled _water, a T _B. In particular, the heating unit 40A returns the water temperature t _A detected by the return water temperature detecting thermistor 58 provided is equal to the target temperature T _A with (approach), the return water temperature provided in the heating unit 40B detects the thermistor 58 return water temperature t _B tHAT detected is equal to the target temperature T _B (approaching) controls so.

Specifically, the circulation pump control unit 64 controls the heating unit 40A so that the flow rate of the temperature-controlled water that circulates changes based on the difference between the return water temperature t _A (t _B ) and the target temperature T _A (T _B ). The circulation pump 46 provided in (40B) is controlled. The expansion valve control unit 65 increases the amount of refrigerant supplied to the heating unit 40A (40B) as the difference between the return water temperature t _A (t _B ) and the target temperature T _A (T _B ) increases. The corresponding electric expansion valve 16 is controlled. The compressor control unit 66 increases the frequency of the compressor 12 as the difference between the return water temperature t _A and the target temperature T _A and the difference between the return water temperature t _B and the target temperature T _B increase. 12 is controlled.

<Operation of heating device 1>
Next, operation | movement of the heating apparatus 1 is demonstrated.
Here, a case where floor heating is performed by all the floor heating panels 70A and 70B of the heating device 1 and the set temperature levels of the areas 71, 72, 73, and 74 are 2, 3, 5, and 7 will be described. To do.

When the operation of the operation start by the remote controller 2 is performed, the target water temperature determination section 62, based on the level 3 of the higher of the set temperature level areas 71 and 72, the target temperature T _A of the return hot water are determined. Further, the target water temperature determination section 62, based on the higher level 7 of the set temperature level areas 73 and 74, the target temperature T _B of the return hot water are determined.

The return water temperatures t _A and t _B detected by the return water temperature detection thermistor 35 provided in the heating units 40A and 40B by the circulation pump control unit 64, the expansion valve control unit 65, and the compressor control unit 66 are the target temperatures. T _a, to match each of _{T B,} the heating unit 40A, a circulation pump 46 40B, and two electric expansion valve 16, the compressor 12 is controlled respectively.

  In addition, the thermal valve controller 63 controls the opening and closing of the thermal valves 53 corresponding to the floor heating panels 70A and 70B in accordance with the set temperatures of the areas 71 to 74. The thermal valve 53 corresponding to the floor heating panel 70A belonging to the area 72 having the set temperature level 3 is maintained in the open state, and the thermal valve 53 corresponding to the floor heating panel 70A belonging to the area 71 having the set temperature level 2 is maintained. Is intermittently controlled according to the difference in the set temperature level from the area 72. The thermal valve 53 corresponding to the floor heating panel 70B belonging to the area 74 having the set temperature level 7 is maintained in the open state, and the thermal valve corresponding to the floor heating panel 70B belonging to the area 73 having the set temperature level 5 is set. The valve 53 is intermittently controlled according to the difference in the set temperature level from the area 74. Thereby, the temperature control water of the temperature based on the set temperature level 3 is supplied to the four floor heating panels 70A, and the temperature control water of the temperature based on the set temperature level 7 is supplied to the four floor heating panels 70B. Supplied.

  Here, as in the conventional heating device, one heating unit is connected to one heat pump unit, eight floor heating panels are connected to this heating unit, and eight floor heating panels are divided into two areas. In the configuration in which the set temperature is set for each area, only two set temperatures can be set. However, in this embodiment, the floor heating unit connected to the heating unit is divided into two areas. Therefore, four set temperatures can be set.

<Characteristics of the heating device 1>
In the case where all floor heating panels are divided into two areas and the set temperature is set for each area as in the conventional heating device, only two set temperatures can be set. In the apparatus 1, the floor heating panel 70A (70B) connected to one heating unit 40A (40B) can be divided into two areas, and the set temperature can be individually set for each area. The number of set temperatures can be set.

  Moreover, in the heating apparatus 1 of this embodiment, since the temperature of the temperature control water supplied to the floor heating panels 70A and 70B can be changed for each of the heating units 40A and 40B, all floor heating panels are provided as in the conventional heating apparatus. Is connected to one heating unit, and the floor heating panel 70A is supplied with temperature-controlled water at a temperature higher than necessary compared to the case where temperature-controlled water at the same temperature is supplied to all the floor-heating panels. , 70B is reduced. Therefore, the thermal efficiency in the heating device 1 can be improved.

  Moreover, in the heating apparatus 1 of this embodiment, the temperature of the floor heating panels 70A and 70B having a low set temperature is adjusted by intermittently controlling the thermal valve 53 (control that alternately repeats the open state and the closed state). ing. As described above, in the heating device 1 of the present embodiment, the floor heating panels 70A and 70B to which temperature-controlled water having a temperature higher than necessary is supplied are fewer than the conventional heating device. Compared to the above, the opening / closing operation of the thermal valve can be reduced. Therefore, the comfort of the floor heating panels 70A and 70B can be improved because the temperatures of the floor heating panels 70A and 70B are stabilized.

  In the heating apparatus 1 of the present embodiment, a plurality of heating units 40A and 40B are connected to one outdoor unit 10, and a plurality of floor heating panels 70A and 70B are connected to the heating units 40A and 40B, respectively. Therefore, the temperature of the temperature-controlled water supplied to the floor heating panels 70A and 70B can be adjusted for each of the heating units 40A and 40B.

  Moreover, in the heating apparatus 1 of this embodiment, the temperature control water of the same temperature is supplied and supplied from the heating unit 40A (40B) to the group of floor heating panels 70A (70B) connected to one heating unit 40A (40B). However, the set temperature can be different for each area.

  Moreover, in the heating apparatus 1 of this embodiment, the temperature of the temperature control water supplied to the group of floor heating panels 70A (70B) connected to one heating unit 40A (40B) is the group of floor heating panels 70A ( 70B) is determined based on the higher set temperature of the set temperatures of the two areas 71 and 72 (73, 74) to which the image belongs. Therefore, it is possible to easily adjust the temperature so that the temperature of the group of floor heating panels 70A (70B) becomes the set temperature.

  Moreover, since the heating apparatus 1 of the present embodiment includes the thermal valve 53 that changes the amount of temperature-controlled water supplied to the floor heating panels 70A and 70B, the temperature varies depending on the floor heating panels 70A and 70B. The temperature can be adjusted easily.

  Moreover, in the heating apparatus 1 of this embodiment, the temperature control water of a temperature different for every heating unit 40A, 40B can be supplied to the floor heating panels 70A, 70B. Therefore, temperature-controlled water at an appropriate temperature can be supplied according to the set temperature range of the floor heating panels 70A and 70B constituting each group.

  Moreover, in this heating apparatus 1, antifreezing operation is performed in order to prevent water in the hot water circulation circuit from freezing when operation is stopped. In the heating apparatus 1 of the present embodiment, the water temperature (liquid pipe temperature) detected by the forward water temperature detection thermistor 59 is less than a predetermined temperature, and the outside air temperature detected by the outside air temperature detection thermistor 29 is less than the predetermined temperature. In such a case, anti-freezing operation is started. This will be specifically described below.

  When any of the water temperatures (temperatures of the water pipes) detected by the forward water temperature detection thermistor 59 of the heating units 40A and 40B is lower than a predetermined temperature (for example, 3 ° C.), the heating unit (40A or 40A 40B) is operated, the hot water stored in the expansion tank 45 is mixed with the water in the pipe, and the hot water circulation circuit is circulated. When the temperature detected by the forward water temperature detection thermistor 59 becomes equal to or higher than the predetermined temperature, the freeze prevention operation is terminated. If the temperature detected by the incoming water temperature detection thermistor 59 does not exceed the predetermined temperature within a predetermined time from the start of operation of the circulation pump 46, the outdoor unit 10 is operated. At this time, the circulation pump 46 of the heating unit that has not performed the freeze prevention operation is also operated, and the freeze prevention operation is performed in both the heating units 40A and 40B.

  When the outside temperature detected by the outside temperature detection thermistor 29 is lower than a predetermined temperature, the circulation pump 46 of the heating units 40A and 40B is operated at a time interval corresponding to the detected temperature. When both the temperatures detected by the return water temperature detection thermistors 58 of the heating units 40A and 40B are equal to or higher than the predetermined temperature, the freeze prevention operation is terminated. Further, when one or both of the temperatures detected by the return water temperature detection thermistors 58 of the heating units 40A and 40B are less than the predetermined temperature within a predetermined time from the start of the operation of the circulation pump 46, the outdoor unit 10 is operated. Instead of the return water temperature detection thermistor 58, an incoming water temperature detection thermistor 59 may be used.

  In this way, by starting the freeze prevention operation based on the temperatures detected by the two thermistors 59 and 29, the freeze prevention operation is surely performed even when either the thermistor 59 or 29 fails. be able to.

[Second Embodiment]
Next, the heating apparatus 101 concerning 2nd Embodiment of this invention is demonstrated. In addition, about the thing which has the structure similar to the said 1st Embodiment, the description is abbreviate | omitted suitably using the same code | symbol.
The heating apparatus 101 of the present embodiment is different from the first embodiment in that the set temperature can be set not for each area but for each floor heating panel 70A, 70B by operation of the remote controller 102, and the other configuration is the first. This is the same as the embodiment.

  As shown in FIG. 4, the control unit 160 of the present embodiment includes a storage unit 161, a target water temperature determination unit 162, a thermal valve control unit 163, a circulation pump control unit 164, an expansion valve control unit 165, And a compressor control unit 166.

The target water temperature determination unit 162 determines the target temperature of the temperature-controlled water in the heating units 40A and 40B, respectively. Specifically, based on the highest set temperature among the set temperatures of the four (group) floor heating panels 70A connected to the heating unit 40A, the temperature adjustment water (return) flowing through the return pipe 50a of the heating unit 40B to determine the target temperature _{T a} of warm water). Further, based on the highest setting temperature among setting temperatures of the four floor heating panel 70B that is connected to the heating unit 40B, to determine the target temperature T _B of the return hot water flowing through the return pipe 50a of the heating unit 40B.

  The thermal valve controller 163 controls opening and closing of the thermal valve 53 provided in the heating units 40A and 40B. Specifically, when the set temperatures of the four (group) floor heating panels 70A connected to the heating unit 40A are different, the thermal valve 53 corresponding to the floor heating panel 70A having the highest set temperature is opened. The thermal valve 53 corresponding to the other floor heating panel 70A is controlled to be switched alternately between an open state and a closed state in accordance with each set temperature (intermittent control). In the intermittent control, the ratio of time between the open state and the closed state is adjusted according to the difference between the set temperature and the highest set temperature. The same applies to the four (group) floor heating panels 70B connected to the heating unit 40B.

  The circulation pump control unit 164 controls the number of rotations of the circulation pump 46 provided in the heating units 40A and 40B. The expansion valve control unit 165 controls the opening degrees of the two electric expansion valves 16 provided in the outdoor unit 10. The compressor control unit 166 controls the operating frequency of the compressor 12 provided in the outdoor unit 10.

Circulation pump control unit 164, the expansion valve control unit 165, and the compressor control unit 166 performs control on the basis of the target temperature T _A of the determined by the target water temperature determination section 162 temperature controlled _water, a T _B. In particular, the heating unit 40A returns the water temperature t _A detected by the return water temperature detecting thermistor 58 provided is equal to the target temperature T _A with (approach), the return water temperature provided in the heating unit 40B detects the thermistor 58 return water temperature t _B tHAT detected is equal to the target temperature T _B (approaching) controls so.

Specifically, the circulation pump control unit 164 determines the heating unit 40A so that the flow rate of the temperature-controlled water that circulates changes based on the difference between the return water temperature t _A (t _B ) and the target temperature T _A (T _B ). The circulation pump 46 provided in (40B) is controlled. Further, the expansion valve control unit 165 increases the amount of refrigerant supplied to the heating unit 40A (40B) as the difference between the return water temperature t _A (t _B ) and the target temperature T _A (T _B ) increases. The corresponding electric expansion valve 16 is controlled. The compressor control unit 166 increases the frequency of the compressor 12 as the difference between the return water temperature t _A and the target temperature T _A and the difference between the return water temperature t _B and the target temperature T _B increase. 12 is controlled.

<Operation of Heating Device 101>
Next, operation | movement of the heating apparatus 101 is demonstrated.
Here, when floor heating is performed by all floor heating panels 70A and 70B of the heating apparatus 101, the set temperature level of the four (group) floor heating panels 70A connected to the heating unit 40A is 1, The case where the set temperature levels of the four (group) floor heating panels 70B that are 2, 2, 3 and connected to the heating unit 40B are 5, 5, 6, 7 will be described.

When the operation of starting operation is performed with the remote controller 102, the target water temperature determination unit 162 sets the target of the return hot water based on the highest level 3 among the set temperature levels of the four floor heating panels 70A connected to the heating unit 40A. _A temperature TA is determined. Further, the target water temperature determination unit 162, based on the highest level 7 of the set temperature level of the four floor heating panel 70B connected to the heating unit 40B, the target temperature T _B of the return hot water are determined.

The return water temperatures t _A and t _B detected by the return water temperature detection thermistor 35 provided in the heating units 40A and 40B by the circulation pump control unit 164, the expansion valve control unit 165, and the compressor control unit 166 are the target temperatures. T _a, to match each of _{T B,} the heating unit 40A, a circulation pump 46 40B, and two electric expansion valve 16, the compressor 12 is controlled respectively.

  Further, the thermal valve controller 163 controls the opening and closing of the thermal valves 53 corresponding to the floor heating panels 70A and 70B according to the set temperatures of the floor heating panels 70A and 70B. The thermal valve 53 corresponding to the floor heating panel 70A having the highest set temperature level among the floor heating panels 70A is maintained in the open state, and the heat corresponding to the floor heating panel 70A having the set temperature levels 1 and 2 is maintained. The valve train 53 is intermittently controlled according to the set temperature level. In addition, the thermal valve 53 corresponding to the floor heating panel 70B having the highest set temperature level among the floor heating panels 70B is maintained in the open state and corresponds to the floor heating panels 70B having the set temperature levels 5 and 6. The thermally operated valve 53 is intermittently controlled according to the set temperature level. Thereby, the temperature control water of the temperature based on the set temperature level 3 is supplied to the four floor heating panels 70A, and the temperature control water of the temperature based on the set temperature level 7 is supplied to the four floor heating panels 70B. Supplied.

Here, in the case of a heating apparatus in which one heating unit is connected to one heat pump unit, eight floor heating panels are connected to the heating unit, and the set temperature is individually set for each floor heating panel When the eight floor heating panel set temperatures are the same as those in the present embodiment, temperature-controlled water having a temperature based on the set temperature level 7 is supplied to all floor heating panels.
Therefore, although the temperature of the temperature control water supplied to the four floor heating panels 70B with the set temperature levels of 5, 5, 6, and 7 is the same as the conventional temperature, the set temperature levels are 1, 2, 2, and 3 Since the temperature of the temperature-controlled water supplied to the four floor heating panels 70A can be made lower than before, the thermal efficiency can be improved.

  Moreover, the thermal valve 53 corresponding to the four floor heating panels 70A with the set temperature levels 1, 2, 2, 3 can be opened and closed less than the conventional one. Therefore, since the temperature of the floor heating panel 70A is more stable than before, comfort can be improved.

<Characteristics of the heating device 101>
In the heating apparatus 101 of this embodiment, since the temperature of the temperature-controlled water supplied to the floor heating panels 70A and 70B can be changed for each heating unit 40A and 40B, all floor heating panels are 1 as in the conventional heating apparatus. The floor heating panels 70A and 70B are connected to two heating units and are supplied with temperature-controlled water having a temperature higher than necessary as compared with the case where temperature-controlled water with the same temperature is supplied to all floor-heating panels. Less. Therefore, the thermal efficiency in the heating apparatus 101 can be improved.

  Moreover, in the heating apparatus 101 of this embodiment, the temperature of the floor heating panels 70A and 70B having a low set temperature is adjusted by intermittently controlling the thermal valve 53 (control that alternately repeats the open state and the closed state). ing. As described above, in the heating apparatus 101 of the present embodiment, the floor heating panels 70A and 70B to which temperature-controlled water having a temperature higher than necessary is supplied are fewer than the conventional heating apparatus. Compared to the above, the opening / closing operation of the thermal valve can be reduced. Therefore, the comfort of the floor heating panels 70A and 70B can be improved because the temperatures of the floor heating panels 70A and 70B are stabilized.

  In the heating apparatus 101 of the present embodiment, a plurality of heating units 40A and 40B are connected to one outdoor unit 10, and a plurality of floor heating panels 70A and 70B are connected to the heating units 40A and 40B, respectively. Therefore, the temperature of the temperature-controlled water supplied to the floor heating panels 70A and 70B can be adjusted for each of the heating units 40A and 40B.

  Moreover, in the heating apparatus 101 of this embodiment, the temperature control water of the same temperature is supplied and supplied from the heating unit 40A (40B) to the group of floor heating panels 70A (70B) connected to one heating unit 40A (40B). However, the set temperature of the group of floor heating panels 70A (70B) can be set to different temperatures.

  Moreover, in the heating apparatus 101 of this embodiment, the temperature of the temperature control water supplied to the group of floor heating panels 70A (70B) connected to one heating unit 40A (40B) is the group of floor heating panels 70A ( 70B) based on the highest set temperature among the set temperatures. Therefore, it is possible to easily adjust the temperature so that the temperature of the group of floor heating panels 70A (70B) becomes the set temperature.

  Moreover, since the heating apparatus 101 of this embodiment has the thermal valve 53 which changes the quantity of the temperature control water supplied to the floor heating panels 70A and 70B, the temperature which changes for every floor heating panels 70A and 70B. The temperature can be adjusted easily.

  Moreover, in the heating apparatus 101 of this embodiment, the temperature control water of a temperature different for every heating unit 40A, 40B can be supplied to the floor heating panels 70A, 70B. Therefore, temperature-controlled water at an appropriate temperature can be supplied according to the set temperature range of the floor heating panels 70A and 70B constituting each group.

  As mentioned above, although 1st and 2nd embodiment of this invention was described based on drawing, it should be thought that a specific structure is not limited to these embodiment. The scope of the present invention is shown not by the above description of the embodiments but by the scope of claims for patent, and further includes all modifications within the meaning and scope equivalent to the scope of claims for patent.

In the first and second embodiments, the target water temperature determination section 62, 162, heating units 40A, the target temperature _T A of the return water temperature flowing through 40B of the return line 50a, to determine the _{T B,} the control unit 60 and 160 is Heating unit 40A, the return water temperature _t a detected by the 40B of the return water temperature detecting thermistor 58, but _{t B} is performing the control (return water temperature control) as the target temperature _T a, becomes _{T B,} the target water temperature The determination units 62 and 162 determine the target temperature of the forward warm water flowing through the forward pipe 50b, and the control units 60 and 160 perform control so that the return water temperature detected by the forward water temperature detection thermistor 59 becomes this target temperature. Water temperature control) may be performed.

  In the first and second embodiments, the thermal valve 53 is an on / off valve that is on / off controlled. However, the thermal valve 53 can be adjusted to an opening between fully open and fully closed instead of the thermal valve 53. And the flow rate of the temperature-controlled water supplied may be adjusted by controlling the opening degree.

  In the first embodiment, the group of floor heating panels connected to one heating unit is divided into two areas, and the set temperature can be individually changed for each area. A group of floor heating panels connected to the door may be divided into three or more areas, and the set temperature may be individually changed for each area. According to this configuration, all the floor heating panels connected to one heating unit can be divided into two or more areas, and a larger number of set temperatures can be set than in the case where the set temperature is set for each area.

  In the said 1st and 2nd embodiment, although the case where a floor heating panel was used was mentioned as an example and demonstrated as a heating terminal of this invention, things other than this (for example, radiator etc.) are used as a heating terminal. Also good.

  In the first and second embodiments, two heating units 40A and 40B are connected to the outdoor unit 10, but three or more heating units may be connected. In this case, the outdoor unit 10 has three or more pairs of connection portions 11a and 11b.

  In addition to the plurality of heating units 40A and 40B, one or a plurality of indoor units may be connected to one outdoor unit 10. The indoor unit is a device that includes a heat exchanger and a fan and performs both heating operation and cooling operation. During the cooling operation, the four-way switching valve is switched to a state indicated by a broken line in FIG. 1 while the electric expansion valve 16 corresponding to the heating unit is closed.

  If this invention is utilized, it can suppress that the thermal efficiency of a heating apparatus falls.

1 Heating device 10 Outdoor unit (heat pump unit)
40A, 40B Heating unit 70A, 70B Floor heating panel (heating terminal)
71-74 Area 53 Thermal valve (open / close valve)
60 Control part (control means)

Claims (6)

A heat pump unit;
A plurality of heating units that are respectively connected to the heat pump units and adjust the temperature of temperature-controlled water, and
A heating device comprising a plurality of groups of heating terminals provided for each of the heating units and supplied with temperature-controlled water from each of the plurality of heating units. The plurality of groups of heating terminals includes a group of heating terminals having two or more heating terminals belonging to any of a plurality of areas whose set temperatures are changed separately,
The heating apparatus according to claim 1, wherein the group of heating terminals is supplied with temperature-controlled water having the same temperature from one heating unit to which the group of heating terminals is connected. The plurality of groups of heating terminals includes a group of heating terminals each having two or more heating terminals whose set temperatures are changed separately,
The heating apparatus according to claim 1, wherein the group of heating terminals is supplied with temperature-controlled water having the same temperature from one heating unit to which the group of heating terminals is connected.   The heating apparatus according to claim 2 or 3, wherein the same temperature is determined based on a highest set temperature among set temperatures in the group of heating terminals. A plurality of on-off valves that change the amount of temperature-controlled water supplied to each of the two or more heating terminals;
Control means for controlling the plurality of on-off valves,
The heating device according to any one of claims 2 to 4, wherein the control means controls the on-off valve based on a set temperature and the same temperature of each of the two or more heating terminals. The plurality of groups of heating terminals includes at least two of the group of heating terminals,
The heating device according to any one of claims 2 to 5, wherein the at least two groups of heating terminals are respectively supplied with temperature-controlled water having different temperatures for each of the heating units.

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