JP4091524B2 - Air conditioning system - Google Patents

Description

  The present invention relates to an air conditioning system for heating and drying a plurality of rooms such as a bathroom and a dressing room.

As an air conditioning system capable of heating a bathroom and a dressing room, one as shown in FIG. 6 is known (see Patent Document 1).
The ceiling hole (10) of the bathroom (A) is covered with a grill plate (11), and a bathroom heating unit (2) is disposed above the ceiling hole (10).

  In the bathroom heating unit (2), a circulation fan (21) located above the intake port (110) of the grill plate (11) and a heat exchanger for heat dissipation located above the hot air discharge port (111) (22) is provided, and the air in the bathroom (A) flows through a path connecting the intake port (110) → the circulation fan (21) → the heat exchanger for heat dissipation (22) → the hot air discharge port (111). Then, it is discharged again into the bathroom (A).

  Further, in the bathroom heating unit (2), the air in the upstream ventilation path of the heat-dissipating heat exchanger (22) is sucked, and the undressing room heating unit (described later) through the damper (13b) in an open state ( A ventilation fan (13) is provided for sucking the air in the upstream ventilation path of the heat-dissipating heat exchanger (44) of 4). And the ventilation path connected to the discharge side of the ventilation fan (13) is connected to the duct connection port (2a) opened on the side wall of the bathroom heat exchanger (2), and the duct connection port ( An external communication duct (13a) is connected to 2a).

  On the other hand, a dressing room heating unit (4) is disposed on the bathroom heating unit (2), and a suction duct connection port (41) opened on the side wall of the dressing room heating unit (4). The air inlet (32) of the ceiling (31) of the dressing room (B) is connected by an air intake duct (33). The discharge duct connection port (42) established on the side wall of the dressing room heating unit (4) and the hot air discharge port (34) on the ceiling (31) of the dressing room (B) are connected by the discharge duct (35). Has been. Also, in the dressing room heating unit (4), the circulation fan (45) is disposed from the opening portion of the suction duct connection port (41) via the heat radiation heat exchanger (44). A ventilation path leading to is formed.

  Supplying hot water from a water heater (51) installed outdoors to the heat exchanger (22) for heat dissipation of the bathroom heating unit (2) and the heat exchanger for heat dissipation (44) of the dressing room heating unit (4) The heat-dissipating heat exchangers (22) and (44) are connected in series by a hot water pipe (54) drawn from the water heater (51). The hot water pipe (54) is provided with a hot water on-off valve (55), and when the hot water on-off valve (55) is opened, a heat exchanger for radiating heat in the dressing room heating unit (4) ( 44) and hot water flow through the heat exchanger (22) for heat dissipation of the bathroom heating unit (2).

The remote control device (52) disposed on the wall surface of the bathroom (A) or the dressing room (B) is connected to the unit control device (53) via the communication line (57a), and the unit The control device (53) is wired to the water heater (51) via another communication line (57b). The unit control device (53) controls each electrical component of the bathroom heating unit (2) and the dressing room heating unit (4).
This device has functions to perform heating and drying of the bathroom (A) and dressing room (B), as well as operation for circulating and blowing indoor air, and each operation is performed as follows. .

1. Heating operation When the heating mode of the bathroom (A) and the dressing room (B) is selected with the remote control device (52), the water heater (51) is activated and the hot water on / off valve (55) is opened. Hot water circulates in the hot water pipe (54) connected to the machine (51) → the heat exchanger for heat radiation (44) → the heat exchanger for heat radiation (22) → the hot water heater (51). At the same time, the circulation fans (21) and (45) are operated. Then, by the operation of the circulation fan (21), the air sucked into the circulation fan (21) from the air inlet (110) on the ceiling of the bathroom is discharged from the circulation fan (21) and then the heat dissipation heat exchanger (22 ), The temperature is raised by exchanging heat, and then discharged from the hot air outlet (111) to the bathroom (A). Thereby, heating of a bathroom (A) can be performed. On the other hand, the circulation fan (45) of the dressing room heating unit (4) is also activated, which causes the air inlet (32) of the dressing room (B) → the intake duct (33) → the suction duct connection port (41) → for heat dissipation Air flows through the path connecting the heat exchanger (44) → circulation fan (45) → discharge duct connection port (42) → discharge duct (35) → hot air discharge port (34) → dressing room (B). Thus, the dressing room (B) can be heated.
When heating only one of the bathroom (A) and the dressing room (B), the hot water on-off valve (55) is opened and the circulation fan (21) or the room corresponding to the room to be heated is opened. Operate the circulation fan (45).
Thereby, one of the bathroom (A) or the dressing room (B) in need of heating can be heated.

2. Drying operationWhen the ventilation fan (13) is operated during the heating operation, the operation of exhausting wet air such as in the bathroom (A) to the outside with the ventilation fan (13) and the heating operation proceed simultaneously. A) etc. are dried.

3. Circulation blow operation When the circulation blow operation mode is selected with the remote control device (52), the hot water on / off valve (55) of the hot water pipe (54) is closed (heat water is not supplied to the heat exchanger for heat dissipation (22) (44)) ), The circulation fans (21) and (45) are operated, whereby the circulation fan operation for circulating the air in the bathroom (A) and the dressing room (B) through the same route as the heating operation is performed.
Japanese Patent No. 2933529 (FIG. 1)

  However, in the above-mentioned conventional one, the heat exchangers for heat radiation (22) and (44) are connected in series by the hot water pipe (54) drawn from the water heater (51). Therefore, even when only one of the bathroom (A) and the dressing room (B) is heated, hot water flows through both the heat exchangers (22) and (44) connected in series.

For this reason, the above conventional one has the following problems.
1. Heat loss is caused by the amount of unnecessary hot water flowing through the heat-dissipating heat exchanger (22) or the heat-dissipating heat exchanger (44) corresponding to a room that is not heated.

2. Since warm water flows through both of the heat exchangers (22) and (44) for heat radiation, the bathroom (A) or the dressing room (B) is heated and the other is circulated and blown. Different types of driving cannot be performed simultaneously on (A) and the dressing room (B).
Therefore, in order to solve the above problem, it is conceivable to separately construct an air conditioning system independent of each other for the bathroom (A) and the dressing room (B). Specifically, the bathroom heating unit (2) and the dressing room heating unit (4) are made independent and connected to the common water heater (51) in parallel with the bathroom heating unit (2) side. A hot water on / off valve is separately provided on the piping on the dressing room heating unit (4) side, and two remote control devices corresponding to the bathroom heating unit (2) and the dressing room heating unit (4) are provided in the bathroom ( A) and a dressing room (B) are installed separately.

  In this way, when heating only one of the bathroom (A) and the dressing room (B), by operating one remote control device corresponding to the room to be heated, the bathroom heating unit (2) or undressing Since hot water can be supplied to only one of the room heating units (4) (the hot water on-off valve is opened), the aforementioned heat loss does not occur. In addition, when the circulation fan (21) or circulation fan (45) of the bathroom heating unit (2) or the dressing room heating unit (4) that does not supply hot water is operated, the air circulates without being heated. ) Or one of the dressing rooms (B) can be heated while circulating the other, and different types of operation can be performed simultaneously on the bathroom (A) and the dressing room (B).

  However, in the above-mentioned improvement plan in which the bathroom heating unit (2) or the dressing room heating unit (4) piped in parallel to the water heater (51) is operated separately by two corresponding remote controllers, the bathroom Two communication lines drawn separately from the two remote control devices corresponding to the heating unit (2) and the dressing room heating unit (4), respectively, must be connected to the water heater (51) separately. There are problems that the number of communication lines is larger than that of the conventional one described above, and that the wiring work is time-consuming as the number of communication lines increases.

The present invention has been made in view of such points.
`` Using a heating unit comprising a heat exchanger for heat dissipation and a circulation fan for returning the air in the room to be air conditioned to the heat exchanger for heat dissipation and returning it to the room again,
Operation of the heating operation mode in which the circulation fan is operated while supplying hot water from a water heater to the heat dissipation heat exchanger, and the circulation fan is stopped in a state where supply of the hot water to the heat dissipation heat exchanger is stopped. In the air conditioning system that selectively executes the operation in the circulating air blowing operation mode to be operated ”,
Even when a plurality of heating units are provided, it is an object of the present invention to improve the workability of wiring work by reducing the number of communication lines connecting the remote control device of the heating unit and the water heater. .

The technical means of the invention according to claim 1 for solving the above-mentioned problem is as follows:
“Circulating from the hot water outlet of the water heater through a parallel circuit of a plurality of heat radiating branch passages each provided with a heat exchanger for heat radiation of the heating unit and returning to the hot water return port of the water heater A flow path is formed,
A hot water on / off valve is provided for each of the heat dissipation branch channels,
A single remote controller provided with an operation mode selection unit for a user to select each operation mode of the heating operation mode and the circulating air operation mode for each heating unit and connected to the water heater via a communication line Equipment is provided,
When the heating operation mode is selected for at least one heating unit among the heating units for which the operation mode is selected by the operation mode selection unit , the hot water supply to the circulation passage is requested. Control for transmitting a hot water supply request signal from the remote control device to the water heater via the communication line;
Control for opening the hot water on-off valve corresponding to the heating unit for which the heating operation mode is selected and operating the circulation fan corresponding to the heating unit;
The control for operating the circulation fan corresponding to the heating unit while maintaining the warm water on-off valve corresponding to the heating unit for which the circulation air blow operation mode is selected,
The plurality of heating units are a bathroom heating unit disposed in a bathroom and a dressing room heating unit disposed in a dressing room,
Wherein if both the heating operation mode is selected for the bathroom heating unit and changing room heating unit, and transmits the hot water supply request signal bathroom heater unit to the water heater via the communication line from said remote control device "that It is.
According to the above technical means, the hot water supplied from the hot water supply circuit flows from the hot water on / off valve provided in each of the radiating branch passages connected in parallel to each of the radiating branch passages. It is configured.

On the other hand, when the heating operation mode is selected for either the bathroom heating unit or the dressing room heating unit among the heating units for which the operation mode is selected by the operation mode selection unit, the circulation channel A hot water supply request signal for requesting supply of hot water is transmitted from the remote control device to the hot water heater via the communication line, and the hot water heater that has received the hot water supply request signal starts supplying hot water to the circulation channel.

Thus, according to the above technical means, the hot water supply request is issued from the remote control device even though there are a plurality of combinations of operation modes (heating operation mode and circulating air operation mode) for the bathroom heating unit and the dressing room heating unit. The water heater can be controlled depending on whether or not a signal is transmitted to the water heater. Therefore, the water heater can be controlled from a remote control device common to each heating unit via a single communication line. Therefore, in order to provide a remote control device for each heating unit separately, the number of communication lines to the hot water heater is reduced by the number of remote control devices, so that the wiring work is reduced accordingly. Workability is improved.

On the other hand, the hot water on / off valve corresponding to the heating unit for which the heating operation mode has been selected is opened, whereby hot water is supplied to the heat radiating branch flow path provided with the heat radiating heat exchanger of the heating unit and the heat radiating is performed. The heat exchanger is heated. Furthermore, the circulation fan corresponding to the heating unit for which the heating operation mode is selected is activated, whereby the air in the bathroom or the dressing room as the air-conditioning target passes through the heat-dissipating heat exchanger section in the temperature rising state. Then, it is circulated so as to return to the room again, whereby the room can be heated.

Further, the hot water on / off valve corresponding to the heating unit for which the circulation air blowing operation mode is selected is maintained in the closed state, and the circulation fan is operated, whereby the circulation air blowing operation is continued.
Therefore, according to the above technical means, only the hot water on / off valve corresponding to the heating unit for which the heating operation mode is selected among the heating units connected in parallel to each other is opened. In this heat exchanger for heat dissipation, hot water does not flow unnecessarily, and heat loss does not occur.

Further, since providing the radiating branch channel hot-off valve to each of which corresponds to each heating unit, the operation of different types of operation modes, i.e., the room became different operation of the heating operation mode cyclic blowing operation mode ( It can be executed simultaneously in the bathroom and dressing room.

The present invention has the following specific effects.
As described above, the number of communication lines is reduced compared to the case where the number of remote control devices is required to provide a plurality of remote control devices corresponding to a plurality of heating units, compared to the case where communication wires to the water heater are required. Therefore, workability of wiring work is improved.
Also, different types of operation modes, that is, the heating operation mode and the circulating air blowing operation mode can be executed simultaneously in different rooms (bathroom and dressing room).

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a schematic perspective view illustrating an air conditioning system according to an embodiment of the present invention, and FIG. 2 is a schematic diagram of a hot water circuit and the like.

[overall structure]
As shown in FIG. 1, a bathroom heating unit (2) is disposed on the ceiling of the bathroom (A), and a dressing room heating unit (4) is disposed on the ceiling of the dressing room (B). Yes.
In addition, as shown in FIGS. 1 and 2, a plurality of heat dissipation units each having a bathroom heating unit (2) and a dressing room heating unit (4) from the first hot water outlet (511) of the water heater (51). A circulation channel (D) that passes through the parallel circuit (C) of the branch flow channels (20) and (40) and returns to the hot water return port (512) of the water heater (51) is formed. The second hot water outlet (513) provided in the water heater (51) is connected with a hot water supply channel (E) connected to the hot water tap (15) of the kitchen (K), and the kitchen (K ) Is provided with a kitchen remote control device (16) provided with an operation switch (161) for turning on / off the power supply of a hot water supply device (51) described later and a hot water supply temperature setting switch (162) for setting a hot water supply temperature. .
In the dressing room (B), a remote control device (6) connected to the bathroom heating unit (2) and the dressing room heating unit (4) via a communication line (60) is disposed. The other communication line (61) drawn out from the remote control device (6) is connected to the hot water heater (51).

Details of each part will be described below.
[About bathroom heating unit (2) and dressing room heating unit (4))
Since the bathroom heating unit (2) and the dressing room heating unit (4) have the same configuration, only the configuration of the bathroom heating unit (2) will be described.
As shown in FIG. 3, the heating outer box (26) of the bathroom heating unit (2) includes a rectangular frame portion (28) whose one end is closed by a bottom plate (27), and the rectangular frame portion (28) The opening (29) at the other end is open downward.

Further, a fitting cylinder (200) is provided on one side wall (26a) of the rectangular frame portion (28) so as to communicate with the inside of a ventilation outer box (71) described later.
The opening (29) at the lower end of the heating outer box (26) is arranged so as to close the ceiling hole (A2) of the bathroom and is covered with the grill plate (11) shown in FIG. ing.

The warm air heating function part (23) housed in the heating outer box (26) is a heating function part having a rectangular cross section that is slightly smaller than the opening (29) at the lower end of the heating outer box (26). Casing (24).
The casing (24) for the heating function section is formed by deforming side plates (24a) (24a) that close both shaft ends of a cylindrical circulation fan (21), which will be described later, and one end of each of the deformed side plates (24a) (24a). A rectangular side plate (24b) provided so as to connect the two, and a guide wall (24c) that constitutes a bottom plate of the heating function unit casing (24) from an opposing portion of the rectangular side plate (24b). In addition, the other guide wall (24d) is juxtaposed in the position corresponding to the vicinity of the downstream end of the guide wall (24c), and the lower end of these guide walls (24c) (24d) is a hot air discharge port ( 25) and the hot air outlet (25) is covered with a louver (250) as shown in FIG. Therefore, when the circulation fan (21) is operated, the air in the bathroom (A) passes through the disposition portion of the heat dissipation heat exchanger (22) and returns to the bathroom (A) again. It can be circulated.

  As shown in FIG. 3, a mounting flange (241) in which intake slits (241 a) and (241 a) are opened projects from the outer periphery of the lower end of the heating function casing (24). When the heating function casing (24) is inserted into the heating outer casing (26) until the mounting flange (241) contacts the periphery of the opening (29) of the heating outer casing (26), A ventilation gap (242) through which ventilation air flows is formed between the inner surface of the outer box (26) and the outer surface of the heating function casing (24). Therefore, when the ventilation fan (72) described later is operated, the air flowing into the ventilation gap (242) formed between the heating outer box (26) and the heating function casing (24) is not ventilated. It flows in a path that leads from the gap (242) to the ventilation fan (72) through the fitting cylinder (200).

Further, in a position adjacent to the arrangement portion of the guide walls (24c) (24d) in the casing (24) for the heating function unit, a large number of fins (220) (220) are arranged in parallel and penetrate these. A heat radiating heat exchanger (22) comprising hot water pipes (221) and (221) is disposed.
Further, the hot water pipes (221) (221) of the heat dissipation heat exchanger (22) are connected to the heat dissipation branch flow path (20) shown in FIG. 1 and 2, a hot water on-off valve (222) that opens and closes the flow path is disposed, and the hot water from the hot water heater (51) is radiated through the hot water on-off valve (222) for heat dissipation. (22) can be supplied and shut off.

  The ventilation outer box (71) connected to the fitting cylinder (200) protruding from the side wall (26a) of the heating outer box (26) is formed in a flat rectangular box shape, and the ventilation outer box (71) accommodates a ventilation fan (72) that sucks air in the heating outer box (26) through the fitting cylinder (200), and a discharge port of the ventilation fan (72) ( 70) communicates with a ventilation duct connecting tube (73) (see FIG. 1) protruding from the side wall of the ventilation outer box (71). In addition, the connecting cylinder part (74) protruding from the side wall of the ventilation outer box (71) is externally fixed to the fitting cylinder (200) protruding from the side wall (26a) of the heating outer box (26). Has been. The ventilation duct connecting tube (73) is connected to an external communication duct (not shown) for ventilation.

[Remote control device (6)]
As shown in FIG. 4, the remote control device (6) is provided with a display part (64) for displaying the heating set temperature and the like, and below the display part (64) is a bathroom heating unit (2 ) Or the unit selection switch (66) for specifying the target for setting the operation mode in the dressing room heating unit (4), and the operation mode of the selected bathroom heating unit (2) or dressing room heating unit (4). A mode selection switch (63), a heating temperature setting switch (68) for setting the heating temperature of the bathroom (A) and the dressing room (B), and an operation switch for turning on / off the power supply of the water heater (51) ( 65) is provided. In this embodiment, the unit selection switch (66) and a mode selection for selecting the operation mode of the bathroom heating unit (2) and the dressing room heating unit (4) selected by the unit selection switch (66). The combination of the switches (63) corresponds to the operation mode selection unit described as the above-described invention specific matter.

In this case, by repeatedly turning on the unit selection switch (66), the bathroom heating unit (2) or the dressing room heating unit (4) is selected and then the confirmation switch (67) is turned on, and then the mode selection switch (63) When the operation mode is selected by repeatedly turning on and the confirmation switch (67) is turned on, the operation mode of the selected bathroom heating unit (2) or dressing room heating unit (4) can be set. If this setting operation is performed for the bathroom heating unit (2) and the dressing room heating unit (4), the operation mode of both the bathroom heating unit (2) and the dressing room heating unit (4) must be set. Can do.

Here, the heating operation mode of the bathroom (A) means that the hot water on / off valve (222) is opened with hot water supplied from the water heater (51) to the heat exchanger (22) for heat radiation of the bathroom heating unit (2). And the operation mode in which the circulation fan (21) is operated, and the drying operation mode of the bathroom (A) means an operation mode in which the ventilation fan (72) is operated in the heating operation mode , and the circulation fan operation mode . Means an operation mode in which the circulation fan (21) is operated without supplying hot water to the heat exchanger for heat dissipation (22), and the ventilation operation mode is an operation mode in which only the operation of the ventilation fan (72) is performed. Means.

Then, the remote control device (6) transmits a control signal necessary for realizing each operation mode to the bathroom heating unit (2) and the dressing room heating unit (4) via the communication line (60). The remote control device (6), the bathroom heating unit (2), and the dressing room heating unit (4) are configured to communicate bidirectionally, so that the bathroom heating unit (2) and the dressing room can be communicated. A signal indicating that the heating unit (4) is in a failure or abnormal stop mode is received from each of these units (2) and (4) and displayed on the display unit (64), or the above failure signal or the like is indicated. Can be sent to the machine (51). The remote control device (6) is operated when either the bathroom heating unit (2) or the dressing room heating unit (4) requires hot water, that is, when the heating operation mode or the drying operation mode is selected. Has a bidirectional communication function for transmitting a hot water supply request signal ( a signal for requesting hot water supply to the circulation flow path (D)) to the hot water heater (51 ) via the communication line (61). Then, the water heater (51) that has received the signal heat-generates hot water and supplies it to the circulation channel (D) as will be described later.

Specifically, the remote control device (6) transmits a signal shown in the table of FIG. 5 to the water heater (51).
The operation mode of the dressing room heating unit (4) is listed in the horizontal direction of the table of FIG. 5, and the operation mode of the bathroom heating unit (2) is listed in the vertical direction.
And the content of the signal transmitted from the remote control device (6) to the water heater (51) is stored in the frame located at the intersection of the row and column in the table of FIG.
Specifically, “●” in FIG. 5 indicates that the signal of the dressing room heating unit (4) is transmitted to the water heater (51), and “○” indicates the signal of the bathroom heating unit (2). This indicates that the data is transmitted to the machine (51).

For example, when the stop mode is selected for the bathroom heating unit (2) while the heating operation mode is selected for the dressing room heating unit (4), the heating operation mode is executed. hot water supply request signal (signal undressing room heating unit (4)) is output since the hot water from the water heater (51) is required. On the other hand, when the dressing room heating unit (4) is in the stop mode when the heating operation mode is selected for the bathroom heating unit (2), hot water from the water heater (51) is also required in this case. since there, (signal bathroom heating unit (2)) hot water request signal is output. Furthermore, when the bathroom heating unit (2) is in the circulating air blowing operation mode and the dressing room heating unit (4) is in the ventilation operation mode , both the bathroom heating unit (2) and the dressing room heating unit (4) require hot water. Therefore, a hot water supply non-request signal (a signal from the bathroom heating unit (2)) is output .

As described above, at least one of the bathroom heating unit (2) and the dressing room heating unit (4) whose operation mode is selected by the unit selection switch (66) or the mode selection switch (63) of the remote control device (6). When the heating operation mode is selected for one heating unit (the same applies when the drying operation mode is selected ), a hot water supply request signal for requesting hot water supply to the circulation flow path (D) is sent to the remote control device. It is transmitted from (6) to the water heater (51) via the communication line (61).

Therefore, although there are many combinations of operation modes of the bathroom heating unit (2) and the dressing room heating unit (4), one of the heating units (2) and (4) that are operated simultaneously is one heating unit. If There is a heating operation mode or the drying operation mode, the paper since the hot water demand signal need only be transmitted to the water heater, common remote control device changing room heating unit and bathroom heating unit (2) (4) (6 ) Can control the water heater via a single communication line. Therefore, in order to provide a separate remote control device (6) (6) corresponding to each heating unit (2) (4), it is necessary to provide communication lines to the hot water heater as many as the number of remote control devices. Thus, the workability of wiring work is improved accordingly.

Further, as is apparent from the table of FIG. 5, when the operation mode in which both the bathroom heating unit (2) and the dressing room heating unit (4) do not require hot water is selected, and the operation mode in which both require hot water. In principle, the signal of the bathroom heating unit (2) is preferentially transmitted to the water heater (51). Specifically, in the case where the circulating air blowing operation mode or the ventilation operation mode that does not require hot water is selected for both the bathroom heating unit (2) and the dressing room heating unit (4) (lower right in FIG. 5). 4 ) is a preferential water heater (2) signal from the bathroom heating unit (in this case, both units (2) and (4) do not require hot water, so no hot water supply request signal). Sent to (51). On the other hand, when the heating operation mode or the drying operation mode that requires hot water is selected for the bathroom heating unit (2) and the dressing room heating unit (4) (the state of the four cells in the center of FIG. 5). ), unless undressing room heating unit bathroom heating unit (2) is in the drying operation mode (4) is in the heating operation mode, in principle, the signal (in this case of bathroom heating unit (2), the hot water Since it is necessary, a hot water supply request signal) is preferentially transmitted to the water heater (51).

As is clear from the table, when the heating operation mode and the drying operation mode are selected for the bathroom heating unit (2) and the dressing room heating unit (4), the unit in which the heating operation mode is selected. (2) The signal of (4) is preferentially transmitted to the water heater (51). Specifically, when the heating operation mode is selected for the bathroom heating unit (2) and the drying operation mode is selected for the dressing room heating unit (4), the signal of the bathroom heating unit (2) Is transmitted to the water heater (51). On the contrary, when the heating operation mode is selected for the dressing room heating unit (4) and the drying operation mode is selected for the bathroom heating unit (2), the dressing room heating unit (4) Is transmitted to the water heater (51), and in any of these cases, the signal indicating the heating operation is transmitted to the water heater (51) in preference to the signal indicating the drying operation.
When the dressing room heating unit (4) is in the stop mode or abnormal stop mode , all the bathroom heating unit (2 ) signals are transmitted to the water heater (51) (see two columns from the left in FIG. 5). .

[About water heater (51)]
As shown in FIG. 2, the water heater (51) for supplying hot water to the circulation flow path (D) has a hot water supply heat exchanger in the flow path connecting the first hot water outlet (511) and the hot water return opening (512). (56) and a circulation pump (58), and the downstream end of the branch flow path between the circulation pump (58) and the hot water supply heat exchanger (56) is connected to the second hot water outlet (513). ing.

The gas circuit (59) to the gas burner (50) for heating the hot water supply heat exchanger (56) is provided with a main valve (590) and a gas amount adjusting valve (591). 590), the gas amount adjusting valve (591), and the circulation pump (58) are controlled by a hot water supply controller (592).
When the hot water heater (51) receives a hot water supply request signal from the bathroom heating unit (2) or the dressing room heating unit (4) described above, it maintains the gas burner (50) in a combustion state and a circulation pump ( 58).

[Actual behavior]
Next, the actual operation of the air conditioning system according to the above-described embodiment will be described.
First, when an operation switch (65) (161) provided in the remote control device (6) or the kitchen remote control device (16) is turned on, a standby state is set.

Next, repeatedly turn on the unit selection switch (66) of the remote control device (6) to select the bathroom heating unit (2) or dressing room heating unit (4) to set the operation mode, and confirm after selection The switch (67) is turned on to confirm the selection. Next, the operation mode of the selected bathroom heating unit (2) or dressing room heating unit (4) is selected by repeatedly turning on the mode selection switch (63). That is, the heating operation mode , the drying operation mode , the circulating air blowing operation mode , the ventilation operation mode , or the stop mode is selected as the operation mode , and then the confirmation switch (67) is turned on. And this mode selection operation is performed with respect to the bathroom heating unit (2) and the dressing room heating unit (4). Then, the bathroom heating unit (2), the dressing room heating unit (4), and the water heater (51) can be operated according to the selected operation mode.

For example, when the heating operation mode is selected as the operation mode of the bathroom heating unit (2), the unit controller (300) opens the hot water on / off valve (222) of the bathroom heating unit (2) and the circulation fan ( 21) is rotated. In addition, a hot water supply request signal is transmitted from the remote control device (6) to the water heater controller (592) of the water heater (51) via the communication line (61). Specifically, the signal of the water supply and heating units (2) as indicated by "○" in the column of the heating operation mode in bathroom heating unit (2) in FIG. 5, i.e., hot water supply request signal, de Koromoshitsu Regardless of the operation mode of the heating unit (4), it is transmitted to the water heater controller (592) of the water heater (51). Then, the main valve (590) inserted in the gas circuit (59) of the water heater (51) is opened, the ignition device (not shown) is activated, the gas burner (50) is maintained in the combustion state, and the circulation pump ( 58) is activated, and hot water heated and generated in the hot water heat exchanger (56) of the hot water heater (51) flows from the circulation channel (D) to the bathroom heating unit (2) side.

  Thus, hot water is supplied from the first hot water outlet (511) of the water heater (51) to the heat radiating branch channel (20) including the heat exchanger (22) for radiating heat in the bathroom heating unit (2). The heat dissipation heat exchanger (22) is heated with the hot water. Then, since the circulation fan (21) of the bathroom heating unit (2) is in operation, the air in the bathroom (A) becomes the grill plate (11) (see Fig. 3) → heat dissipation heat exchanger (22) → circulation. The fan (21) → the hot air outlet (25) → circulates in a path connected to the inside of the bathroom (A), whereby the bathroom (A) can be heated.

On the other hand, as shown in FIG. 5, when the circulation fan operation mode is selected as the operation mode of the bathroom heating unit (2), the dressing room heating unit (4) is in the stop mode, abnormal stop mode, circulation fan operation mode, ventilation If set to the operation mode, the remote control device (6) from the water heater (51) hot water not request signal is transmit to it hot water off valve (222) is maintained in a closed state. Thus, the hot air is not supplied from the water heater (51), and the air in the bathroom (A) is circulated by the circulation fan (21), and the circulation air blowing operation mode is continued.

Further, when the drying operation mode is selected for the bathroom heating unit (2) , the ventilation fan (72) is further operated in the heating operation mode, whereby the air in the bathroom (A) is removed from the ventilation fan. The heating operation is executed while ventilating in (72), and the drying operation proceeds. When the ventilation operation mode is selected, only the ventilation fan (72) is operated without supplying hot water from the water heater (51).
The dressing room heating unit (4) also performs the same operation as the bathroom heating unit (2). For example, when the heating operation mode as the operation mode of the undressing room heating unit (4) is selected, Outputs the hot water supply request signal to the water heater (51) from the remote control device (6) as, undressing room heating unit The warm water on-off valve (442) on the (4) side is opened and the circulation fan (41) is operated, thereby heating the dressing room (B).

According to the above embodiment, among the bathroom heating unit (2) and the dressing room heating unit (4) piped in parallel with each other, the hot water corresponding to the unit executing the operation mode that requires the hot water supply Since only the on-off valves (222) and (442) are opened, heat loss is prevented compared to the conventional ones that supply hot water uniformly to the bathroom heating unit (2) and dressing room heating unit (4) in a series circuit. can do.
In addition, since only the hot water on / off valves (222) and (442) corresponding to the unit that is operating in the operation mode that requires hot water supply are opened, different operation modes such as the heating operation mode and the circulation fan operation mode it can be executed simultaneously operating bath (a) and the changing room at (B).

Further, as described above, compared to the case where a remote control device is provided for each of the bathroom heating unit (2) and the dressing room heating unit (4), the communication line connecting the remote control device and the water heater (51). Therefore, the workability of the communication wiring work is improved.

  In the above embodiment, a ventilation fan similar to the ventilation fan (72) built in the bathroom heating unit (2) is also built in the dressing room heating unit (4), but the bathroom heating unit (2) and the dressing room are also built. A single ventilation fan that can be shared with the heating unit (4) is provided, and the air in the bathroom (A) and the dressing room (B) is sucked and discharged to the outside by this single ventilation fan. Good.

Explanatory drawing of the air conditioning system to which the piping structure which concerns on embodiment of this invention is applied Schematic diagram of hot water circuit etc. Cross section of bathroom heating unit (2) Front view of remote control device (6) Table explaining the contents of the signal sent to the water heater (51) Illustration of conventional example

Explanation of symbols

(2) ・ ・ ・ Bathroom heating unit
(4) ... dressing room heating unit
(6) ・ ・ ・ Remote control device
(20) (40) ... Branch flow path for heat dissipation
(21) (41) ・ ・ ・ Circulating fan
(22) (44) ... Heat dissipation heat exchanger
(61) ... Communication line
(72) ・ ・ ・ Ventilation fan
(C) ・ ・ ・ Parallel circuit
(D) ・ ・ ・ Circulating channel
(222) (442) ・ ・ ・ Hot water on / off valve

Claims (1)

Using a heating unit comprising a heat exchanger for heat dissipation and a circulation fan that returns the air in the room to be air conditioned to the heat exchanger for heat dissipation and then returns to the room again.
Operation of the heating operation mode in which the circulation fan is operated while supplying hot water from a water heater to the heat dissipation heat exchanger, and the circulation fan is stopped in a state where supply of the hot water to the heat dissipation heat exchanger is stopped. In an air conditioning system that selectively executes operation in a circulating air blow operation mode to be activated,
A circulating flow returning from the hot water outlet of the water heater to the hot water return port of the water heater through a parallel circuit of a plurality of heat radiating branch passages each provided with a heat exchanger for heat radiation of the heating unit. A road is formed,
A hot water on / off valve is provided for each of the heat dissipation branch channels,
A single remote controller provided with an operation mode selection unit for a user to select each operation mode of the heating operation mode and the circulating air operation mode for each heating unit and connected to the water heater via a communication line Equipment is provided,
When the heating operation mode is selected for at least one heating unit among the heating units for which the operation mode is selected by the operation mode selection unit , the hot water supply to the circulation passage is requested. Control for transmitting a hot water supply request signal from the remote control device to the water heater via the communication line;
Control for opening the hot water on-off valve corresponding to the heating unit for which the heating operation mode is selected and operating the circulation fan corresponding to the heating unit;
The control for operating the circulation fan corresponding to the heating unit while maintaining the warm water on-off valve corresponding to the heating unit for which the circulation air blow operation mode is selected,
The plurality of heating units are a bathroom heating unit disposed in a bathroom and a dressing room heating unit disposed in a dressing room,
Sends the hot water supply request signal bathroom heater unit to the water heater via the communication line from said remote device if both the heating operation mode is selected for the changing room heating unit and the bathroom heating unit, air Harmony system.

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