JP2001099430A - Warm water heating system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a warm water heating system capable of satisfactorily transmitting and receiving electric waves while solving a difficulty in wiring work using radio communication. SOLUTION: This warm water heating system is provided in which it includes a heat source machine 1, a plurality of floor panels 2A, 2B, floor heating remote controllers 4A, 4B corresponding to respective floor panels, and a plurality of warm water heating apparatuses 2C, 2D that perform communication control in itself, the communication control for the heat source machine 1 being achieved with the aid of the floor heating remote controllers 4A, 4B, warm water heating apparatuses 2C, 2D. In the system, a repeater 6 is provided between the floor heating remote controllers 4A, 4B, the warm water heating apparatuses 2C, 2D, and the heat source machine 1 for the purpose of enabling radio communication between the repeater 6, and the floor heating remote controllers 4A, 4B and the warm water heating apparatuses 2C, 2D.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water heating system, and more particularly, to a communication form between a remote controller corresponding to a plurality of hot water heaters and a heat source device.

[0002]

2. Description of the Related Art Generally, a heat source unit having a hot water boiler is provided, and a plurality of hot water heaters are connected to the heat source unit by using hot water pipes made of resin. There is known a hot water heating system in which a remote controller is provided and communication of the operation of the heat source device is controlled by the remote controller.

[0003] In the conventional configuration, each remote controller and the heat source device are connected by wire communication, and this communication line is built in a hot water pipe made of resin and is led from the heat source device to each wired remote controller. .

[0004]

However, in the conventional configuration, the hot water pipe is generally installed on the floor surface, while the wired remote controller is generally installed on the indoor wall surface. However, the communication line separated from the hot water pipe on the floor surface must be started up along the wall surface inside the room, and this communication line must be connected to a wired remote controller installed on the wall surface, which poses a problem in that there are many difficulties in wiring work. is there.

If a so-called wireless remote controller is used instead of the wired remote controller, transmission and reception may not be performed properly due to, for example, radio wave interference, which causes a problem such as erroneous operation.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a hot water heating system that can transmit and receive radio waves satisfactorily while solving wiring work difficulties.

[0007]

According to the first aspect of the present invention,
In the hot water heating system, comprising a heat source unit, a plurality of hot water heaters connected to the pipes, and remote controllers corresponding to the respective hot water heaters, wherein the remote control unit controls the communication of the heat source units. A repeater is provided between the controller and the heat source device, and wireless communication is possible between the repeater and the remote controller.

According to a second aspect of the present invention, in the first aspect of the present invention, wired communication is possible between the heat source unit and the repeater.

According to a third aspect of the present invention, in the first aspect of the invention, wireless communication is possible between the heat source unit and the repeater.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the repeater or the heat source unit includes a wired interface unit, a wireless interface unit, and a selection switch therebetween. At the time of construction, it is characterized in that either a wired communication connection or a wireless communication connection can be selected between the heat source device and the repeater by switching a selection switch.

According to a fifth aspect of the present invention, in the first aspect of the present invention, the heat source device is housed in a pipe shaft, and the relay is located outside and close to the pipe shaft. It is characterized by having been provided.

According to a sixth aspect of the present invention, in the first aspect of the present invention, the heat source unit is installed in a basement, and the repeater is provided near an opening from the basement to the ground. It is characterized by the following.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 10 denotes a hot water heating system. The hot water heating system 10 has a heat source device 1, which is housed in a pipe shaft 7. The pipe shaft 7 is, for example, a hollow space formed in a concrete wall of a building.
The opening is covered with, for example, a metal door. The heat source unit 1 burns gas, oil, or the like, and generates hot water by the heat of combustion. The heat source unit 1 includes a circulation pump 3 as a heating pump. The circulation pump 3 includes a plurality (for example,
2) floor mats (hot water heaters) 2A and 2B, a hot water heating type air conditioner (hot water heater) 2C installed on the wall surface of the heated room 11, and hot water disposed on the floor surface of the heated room 11 A heating fan convector (hot water heater) 2D is connected in parallel. These floor mats 2A, 2B, air conditioner 2C,
Thermal valves 5A to 5D are provided between the fan convector 2D and the circulation pump 3, respectively. In the heated room 11, the same number (for example, two) of floor mats 2A and 2B is provided.
Floor heating remote controllers (remote controllers) 4A, 4B are installed in a form corresponding to the floor mats 2A, 2B. In addition,
Each of the air conditioner 2C and the fan convector 2D has an operation remote controller for operating each of the air conditioners. In the present embodiment, a part corresponding to a remote controller for performing wireless communication with a repeater 6 described later includes the air conditioner 2C and the fan convector. Built in 2D.

In this embodiment, the floor heating remote controller 4 is used.
A, 4B, an air conditioner 2C, a fan convector 2D, and a repeater 6 are provided between the heat source device 1 and the floor heating remote controllers 4A, 4B, an air conditioner 2C, a fan convector 2D, and various relays between the repeater 6. Signals can be transmitted and received wirelessly. Hereinafter, the floor heating remote controllers 4A and 4B, the air conditioner 2C, and the fan convector 2D are referred to as “floor heating remote controllers 4A and the like”.

The repeater 6 is arranged between the heat source unit 1 and the floor heating remote controller 4A or the like at a position where a good radio wave transmission / reception state with the floor heating remote controller 4A can be ensured. That is, when the heat source device 1 is housed in the pipe shaft 7 as in the present embodiment, the repeater 6 is installed outside the pipe shaft 7 and near the same. When installed in a basement, it is provided near the opening from the basement to the ground. In addition, repeater 6
Is supplied from a commercial power supply.

FIG. 2 is a control block diagram. The heat source device 1 includes a microcomputer 19 storing a control program. The microcomputer 19 is connected to a combustion control circuit 12 and a driver 13 via a bus line. When the combustion of the heat source unit 1 is controlled, the gas valve 14 is opened and closed based on a signal from the combustion control circuit 12, and the ignition of the igniter 15 is controlled. In addition, the floor mats 2A and 2B, the air conditioner 2
C, when hot water is supplied to the fan convector 2D, the driver 13 is driven to drive the heating pump 3 and the thermal valves 5A to 5D.
Is controlled to open and close. 1a is a trial operation switch. On the other hand, the floor heating remote controller 4A, etc.
The microcomputer 21 is connected to a room temperature thermistor 4f, a floor temperature thermistor 7b, a key input unit 22, and a display unit 23. The floor temperature thermistor 7b can be connected only to the floor heating remote controllers 4A and 4B, and is connected to the floor heating remote controllers 4A and 4B only during the trial operation.
In addition, a communication circuit 31 is connected to the microcomputer 19 of the heat source unit 1, and an interface unit 32 is communicably connected to the communication circuit 31 by a communication line L1. The interface unit 32 may be provided in the repeater 6.

In this embodiment, the interface unit 3
2 is connected to the transmission / reception circuit 34 of the repeater 6 via the communication line L2. An antenna 34a is connected to the transmitting / receiving circuit 34.

A communication circuit 33 is connected to the microcomputer 21 such as the floor heating remote controller 4A. The antenna 33a of the communication circuit 33 and the antenna 3 of the repeater 6
4a, it is configured to be able to perform wireless communication using radio waves used for specific low-power devices.

Each of the floor heating remote controllers 4A and the like has an operation panel. FIG. 3 shows an operation panel of the floor heating remote controller 4A (or 4B) as an example of the operation panel. This floor heating remote controller 4A (or 4B) includes an operation key 4c,
Operation lamp 4d, LCD display 4e, room temperature thermistor 4
f, a program operation lamp 4g, a temperature lowering switch 4h, a temperature raising switch 4j, a connection hole 4k, and the like. A floor temperature detector 7 is detachably mounted on the connection hole 4k. As shown in FIG. 5, the floor temperature detector 7 has a lead wire 7c, and one end of the lead wire 7c is detachably connected to a connection hole 4k of a floor heating remote controller 4A (or 4B). A possible connection 7a is provided. On the other hand, the other end of the lead wire 7c is provided with the above-mentioned bed temperature thermistor 7b as a temperature detecting means, and around the bed temperature thermistor 7b, a synthetic resin case formed in a substantially hemispherical shape (bowl shape). 8 is attached so as to surround the floor temperature thermistor 7b. The hot water heating system 10 is provided with a test run completion connector 9.
As shown in FIG. 4, the floor heating remote controller 4A (or 4B)
Has a connection portion 9a having the same function as the connection portion 7a of the floor temperature detector 7 which can be connected to the connection hole 4k. A connector 9d is provided on the connection portion 9a via a lead wire 9b, and a connector 9e is connected to the connector 9d. The connector 9c is connected to a board 9c having a resistor having a predetermined resistance value equivalent to the resistance value when the floor temperature thermistor 7b detects a predetermined temperature. Although the operation panel of the floor heating remote controller 4A (or 4B) has been described above, the operation panels of the air conditioner 2C and the fan convector 2D are almost the same except for the floor temperature detector 7 and the parts related thereto. Configuration.

Next, normal operation and test operation of the hot water heating system 10 will be described.

In this embodiment, the normal operation and the test operation are executed according to the procedure described below. However, since the normal operation program and the test operation program are executed, the heat source unit 1 and the floor heating remote controller 4A are connected. As shown in FIG. 2, the data transmitted and received by the communication circuit 33 is transmitted and received between the antenna 33a of the communication circuit 33 and the antenna 34a of the repeater 6a using radio waves used for the specified low-power device.

(Normal Operation Control) As shown in FIG. 6, when the operation key 4c of the floor heating remote controller 4A is turned on (S
1), the floor heating remote controller 4A executes the normal operation processing based on the normal operation program shown in FIG. That is, the operation lamp 4d and the operation part of the LCD display unit 4e are turned on, and the ON / OFF of the thermal valve 5A is determined based on the room temperature detected by the room temperature thermistor 4f and the set temperature set by the floor heating remote controller 4A. Calculate the OFF time. Next, as shown in FIG. 6, before the operation ON signal data and the thermal valve ON signal data are wirelessly transmitted to the heat source unit 1 by radio waves, carrier sense is executed (S2). The carrier sense refers to an operation for confirming whether or not another radio wave of substantially the same frequency is emitted in the corresponding space. If another radio wave of substantially the same frequency is emitted, wireless transmission is not executed. When the carrier sense is executed and the emission of another radio wave of the same frequency is not confirmed, the operation ON signal data and the heat valve ON signal data are transmitted to the interface unit 32 of the heat source unit 1 by the radio wave to the transmission / reception circuit 34 of the repeater 6. Wireless transmission is performed (S3). When the transmission / reception circuit 34 receives the operation ON signal data and the thermal valve ON signal data (S
4), send these to the interface unit 32 via the communication line L2 (S5). The interface unit 32 that receives the operation ON signal data and the thermal valve ON signal data
Before wirelessly transmitting the response signal to the floor heating remote controller 4A by radio waves, the carrier sense is executed through the transmission / reception circuit 34 and the antenna 34a (S6), and the response signal is transmitted to the repeater 6 via the communication line L2. (S7), the response signal is returned from the antenna 34a to the floor heating remote controller 4A through the transmission / reception circuit 34 (S8), and the apparatus enters a state of waiting for the next transmission radio wave (S8).
9).

Simultaneously with the return processing operation, the interface section 32 outputs the operation ON signal data and the thermal valve ON signal data to the communication circuit 31 via the communication line L1. In this case, the output of data to the communication circuit 31 is sequentially executed in response to a request from the heat source device 1. The interface unit 32 temporarily stores the data (S1
0), and has a function of outputting corresponding data in response to a request. Therefore, when there is a request from the heat source unit 1, the interface unit 32 outputs the corresponding data to the communication circuit 31 by wire (S11), and when the communication circuit 31 receives the data (S1).
2) The response signal is sent back to the interface unit 32 (S13).

The ON-OFF time of the thermal valve 5A is 2
The ON time is 5 to 20 minutes with 0 minute as one cycle (continuous O
Variable control is possible in the range of N). Therefore, during the floor heating operation, the amount of hot water supplied to the room is controlled by calculating and controlling the ON-OFF time of the thermal valve 5A based on the deviation between the set temperature and the room temperature every 20 minutes, The room temperature is controlled to the set temperature.

In the above embodiment, the heat source unit 1 and the relay 6
Are connected by wire communication, and the repeater 6 and the floor heating remote controller 4A are connected by wireless communication.
It is also possible to connect the heat source device 1 and the floor heating remote controller 4A or the like directly by wired communication without passing through.
When these are connected by wired communication, the interface unit 32 of the heat source device 1 may be removed, and the communication circuits 31 and 33 may be connected by a communication line.

In this embodiment, the interface unit 3
2 is a response processing operation (S4 to S8) of the received signal and the heat source device 1
Data transmission operation (S11 to S13), and has a function of storing data (S10), so that carrier sense is executed (S2, 6) and a signal request from the heat source device 1 is waited. , It is possible to correct the time delay of the communication required. Therefore, it is possible to avoid occurrence of communication abnormality such as an error output due to wired / wireless conversion in the present system.

(Trial Operation Control) This trial operation is performed after installation work of the heat source unit 1 and the heating pipes is completed to check whether or not the heating pipes are erroneous.

First, as shown in FIG. 5, the floor temperature thermistor 7b of the floor temperature detector 7 and the case 8 are installed on the floor surface in the room 11 to be heated in which the floor mat 2A is disposed. Is inserted into the connection hole 4k of the floor heating remote controller 4A. Then, the floor temperature thermistor 7b is connected to the floor heating remote controller 4A.

In this state, as shown in FIG.
When the test run switch 1a is turned on (S21), the heat source device 1 executes a test run process based on a test run program shown in FIG. That is, the heat source unit 1
Is connected to the interface section 32 by the communication line L.
The data for transition to the "test operation mode" is communicated by wire (S22), and the interface unit 32 immediately returns a response signal notifying the reception to the communication circuit 31 (S2).
3). As described above, the interface unit 32 performs carrier sense through the transmission / reception circuit 34 and the antenna 34a before wirelessly transmitting the transition data to the "test operation mode" to the floor heating remote controller 4A by radio waves as described above (S24). The shift data to the “test operation mode” is sent to the transmission / reception circuit 34 of the repeater 6 via the communication line L2 (S
25), the transmission data to the "test operation mode" is transmitted to the floor heating remote controller 4A or the like by radio waves through the transmission / reception circuit 34 and the antenna 34a (S26).

When the floor heating remote controller 4A or the like receives the data for shifting to the “test operation mode” (S27),
Carrier sense is executed (S28), and a response signal notifying the signal reception is sent back to the interface unit 32 by radio waves (S29), and a standby state for the next transmission radio wave is entered (S30). The test operation is started simultaneously with the return processing operation (S28 to S30) (S31), and the process of the test operation is executed (S32). And remote controller 4A for floor heating
When the test operation is completed (S33), the carrier sense is executed again (S34) before transmitting the "test operation end" data to the repeater 6 by radio, and the "test operation end" data is transmitted and received by the repeater 6. The signal is transmitted to the circuit 34 by radio waves (S35). Upon receiving the “test run end” data, the transmission / reception circuit 34 sends the data to the interface unit 32 via the communication line L2 (S36). When the interface unit 32 receives the “test run end” data (S
37) Prior to wirelessly transmitting the response signal to the floor heating remote controller 4A by radio waves, carrier sense is executed through the transmission / reception circuit 34 and the antenna 34a (S3).
8), and sends the response signal to the transmission / reception circuit 34 (S3
9) Then, the transmission / reception circuit 34 and the antenna 34a are sent back to the floor heating remote controller 4A by wireless communication (S40), and a standby state for the next transmission radio wave is entered (S41).

Simultaneously with this reply processing operation, the interface section 32 outputs "test run end" data to the communication circuit 31 via the communication line L1. In this case, the communication circuit 3
The data output to the heat source device 1 is sequentially executed in response to a request from the heat source device 1. The interface unit 32 has a function of temporarily storing the "test run end" data (S42) and outputting the corresponding data in response to a request. Therefore, when there is a request from the heat source unit 1, the interface unit 32 outputs the corresponding data to the communication circuit 31 by wire (S43). When the communication circuit 31 receives the data (S44), the response signal is returned to the interface unit 32. Output (S45).

Next, the test run process (S32) will be described in detail.

When the test operation is started, the operation lamp 4d and the program operation lamp 4
g is flashed to visually notify the test driver of the transition to the “test run mode”. At the time of shifting to the "test operation mode", the bed temperature detected by the bed temperature thermistor 7b of the bed temperature detector 7 at this time is stored as "T1" data, and the floor temperature rises during the test operation of another system. It is determined whether or not to perform. If the floor temperature rises, erroneous heating piping may be considered, so that "abnormal data" is immediately transmitted to the interface unit 32 of the heat source unit 1 by radio waves (that is, error processing).
Then, the heat source device 1 is made to recognize the occurrence of the abnormality due to the test operation and the content thereof.

It is also possible to provide the heat source unit 1 with a display unit for displaying an abnormal code of 7 segments and to display the contents of the code when an abnormality occurs, so that the test driver can easily determine the cause of the abnormality. It is.

When the heat source unit 1 shifts to the "test operation mode", the "water filling" operation of driving the pump 3 to fill the heating circulating water into the pipes of each floor heating system is sequentially switched for each system. Do. And all floor mats 2A, 2
B, the air conditioner 2C, and the “water filling” to the fan convector 2D are completed normally, the floor heating remote controllers 4A, 4
B, the air conditioner 2C, and the fan convector 2D perform the test operation sequentially.

Hereinafter, the details of the test operation using the floor heating remote controller 4A and the like will be described.

The interface section 32 of the heat source unit 1 transmits "test operation mode + water filling completed + operation ON" data to the floor heating remote controller 4A corresponding to the floor mat 2A by radio waves. Further, the pump 3 is turned on to start a normal heating combustion operation.

The first time the floor heating remote controller 4A receives the "test operation mode + water filling completed + operation ON" data,
The current bed temperature detected by the bed temperature thermistor 7b is "T
2 ". Thereafter, in the bed temperature thermistor 7b in the case 8, a test operation limit time (for example, 50 hours) is set as a predetermined time as to whether or not the bed temperature increases by “T2” +5 deg.
Minutes) elapse.

The test operation limit time is displayed during the test operation by using "analysis" of the program time display section, and the temperature lowering switch 4h and the temperature raising switch 4j for changing the set temperature.
With these operations, these switches (keys) are also used as changing means for a certain time range (for example, 20 to 90 minutes).
It can be changed with. Therefore, the test operation limit time can be changed according to the installation status of the floor mats 2A and 2B, so that the test operation can be performed for various installations. Further, since the test operation limit time is configured to display the remaining time as the test operation progresses, the progress of the test operation and the remaining time can be easily determined. In addition, jumper wires and switches are provided on the board,
The test run limit time may be switched.

In S32, under normal conditions, the floor heating remote controller 4A operates the floor temperature thermistor 7b to "T2" + 5de.
At the time point when the value has risen to “g”, the “test run normal end” data is transmitted to the interface unit 32 of the heat source device 1 via the transmission / reception circuit 34 of the repeater 6 by radio waves, and the test run ends. When the interface unit 32 of the heat source unit 1 receives the “test run normal end” data, the interface unit 32 transmits a signal instructing the test run of the next floor mat 2B to the floor heating remote controller 4B by radio waves, and performs the test run sequentially. When the floor temperature does not rise even after the test operation limit time (50 minutes) has elapsed after the start of the test operation, the floor heating remote controller 4A determines that the piping is erroneous, and causes the interface unit 32 of the heat source unit 1 to indicate "test operation abnormality". Transmit data via radio waves. The interface unit 32 of the heat source unit 1 stops the trial operation of the floor mat 2A when the "test operation abnormal" data is received, and transmits a signal for instructing the trial operation of the next floor mat 2B to the remote controller 4B for floor heating, Perform a test run similar to that described above.

Further, when the test operation is performed again for various reasons, when it is desired to omit the test operation of the system for which the test operation has already been completed or to make it clear that the test operation has been completed, the pass judgment key is set during the "test operation mode". By operating the operation key 4c which also functions as the
A determines that "test operation is completed normally" and transmits this data to the interface unit 32 of the heat source device 1.
Further, in consideration of careless operation, the pass determination key may be determined by multiple pressing of the temperature lowering switch 4h and the temperature raising switch 4j.

Further, as a method of normally completing the test operation,
The test run completion connector 9 shown in FIG. 4 may be used. That is, in a state where the connection portion 9a of the test operation completion connector 9 is inserted and connected to the connection hole 4k of the floor heating remote controller 4A, the floor temperature is the same as when a predetermined temperature (for example, 60 to 70 ° C.) is detected. Is input to the floor heating remote controller 4A. When the “test run ON” data is received by radio waves from the interface unit 32 of the heat source unit 1, it is determined that “test run is completed”, and the interface unit 32 of the heat source unit 1 is determined. It is also possible to transmit the data by radio waves.

In this embodiment, the floor heating remote controller 4A
Wireless communication is performed between the relay device 6 and the like, and wired communication is performed between the relay device 6 and the heat source device 1.
Even if is stored in the pipe shaft 7, the communication state between the repeater 6 and the heat source device 1 can be favorably maintained. The relay 6 is located at a position where radio waves can be easily received from a remote controller for floor heating, that is, when the heat source device 1 is housed in the pipe shaft 7,
If the heat source unit 1 is installed in the basement outside the basement and near the opening from the basement to the ground, the obstacle such as the pipe shaft 7 and the wall of the basement is installed. Even if there is an object, the communication state between the heat source device 1 and the floor heating remote controller 4A or the like can be favorably maintained.

As another embodiment, as shown in FIG. 10, an interface unit 41 capable of wireless communication with the heat source unit 1 is provided.
May be provided, and a repeater 42 capable of wireless communication with the interface unit 41 may be provided so that wireless communication between the interface unit 41 and the repeater 42 is possible. In this case, the repeater 42 is provided with an attenuation correction circuit 44 in addition to the transmission / reception circuit 43. The interface unit 41
Has the same function as the interface unit 32 (FIG. 2), and the interface unit 41 can be provided in the repeater 6.

When communication is performed from the heat source unit 1 to the floor heating remote controller 4A or the like, a radio wave is transmitted from the interface unit 41 of the heat source unit 1 through the antenna 41a, and the radio wave is received by the transmission / reception circuit 43 through the antenna 42a of the repeater 42. You. Even when the radio wave received by the transmission / reception circuit 43 is attenuated by an obstacle (for example, the pipe shaft 7) between the interface unit 41 and the repeater 42, the attenuation is corrected by the attenuation correction circuit 44. hand,
The signal is transmitted by wireless communication from the transmission / reception circuit 43 to the floor heating remote controller 4A or the like via the antenna 43a.

When communication is performed from the floor heating remote controller 4A or the like to the heat source device 1, a radio wave is transmitted from the antenna 33a of the floor heating remote controller 4A or the like, and the radio wave is transmitted to the antenna 43a.
The transmission / reception circuit 43 receives the
Even if the radio wave received at 3 is attenuated by an obstacle or the like between the interface unit 41 and the repeater 42, the attenuation is corrected by the attenuation correction circuit 44 and transmitted from the antenna 43a of the transmission / reception circuit 43. The signal is received by the interface unit 41 of the heat source device 1 via the antenna 41a.

In this alternative embodiment, the wireless communication is performed between the floor heating remote controller 4A and the like and the repeater 42, and also the wireless communication is performed between the heat source unit 1 and the repeater 42. Wiring work between 1 and the repeater 42 can be made unnecessary.

As a further embodiment, as shown in FIG. 11, a heat source unit 1 includes a wireless communication interface unit 51 and a wired communication interface unit 52 for communication between the heat source unit 1 and the repeater 53. And a selection switch (not shown). When the system is installed, the selection switch can be switched to select either a wireless communication connection or a wired communication connection between the heat source device 1 and the repeater 53. May be configured. In this case, the repeater 53 is provided with an attenuation correction circuit 55 in addition to the transmission / reception circuit 54. L3-L
5 is a communication line. The wireless communication interface unit 51 and the wired communication interface unit 52
It has the same function as the interface unit 32 (FIG. 2),
Further, any or all of the interface units 51 and 52 and the selection switch may be provided in the repeater 6.

The selection of whether to perform wireless communication or wired communication between the heat source device 1 and the repeater 53 is determined when the present system is installed. That is, at the time of installation of the present system, the selection switch is set to wireless communication at first, and the interface unit 52 for wire communication of the heat source unit 1 and the repeater 5 are connected.
A test is performed to determine whether or not wireless communication is well performed without connecting the transmission / reception circuit 54 of No. 3 via the communication line L5. If the radio wave transmission / reception state between the heat source device 1 and the repeater 53 is good, the wireless communication is set as it is. Heat source unit 1 and repeater 5
If the transmission / reception state of the radio wave with the communication unit 3 is poor, the interface unit 52 for wired communication of the heat source unit 1 and the transmission / reception circuit 54 of the repeater 53 are connected by the communication line L5 to set the wired communication. Switch.

When the communication between the heat source unit 1 and the relay unit 53 is set to wireless communication, similarly to the embodiment shown in FIG.
The radio wave received by the transmission / reception circuit 54 is attenuated and corrected by the attenuation correction circuit 55.
is transmitted by wireless communication to the heat source device 1 or the floor heating remote controller 4A or the like.

When the communication between the heat source unit 1 and the repeater 53 is set to the wired communication, similarly to the embodiment shown in FIG. 2, the transmission / reception circuit 54 of the repeater 53 is transmitted from the floor heating remote controller 4A or the like. The received radio wave is transmitted from the transmission / reception circuit 54 to the heat source device 1 via the communication line L5 by wire communication without being subjected to attenuation correction by the attenuation correction circuit 55. In addition, heat source machine 1
The signal received by the transmission / reception circuit 54 from the interface unit 52 through the communication line L5 is transmitted through the antenna 54a to the floor heating remote controller 4A or the like by wireless communication without being attenuation-corrected by the attenuation correction circuit 55.

In this still another embodiment, the wireless communication and the wired communication can be set between the heat source unit 1 and the repeater 53. Accordingly, there is an effect that wireless communication and wired communication can be selected.

In the above three embodiments, when data is transmitted and received by radio waves, carrier sense is always executed. In this case, the interface unit 32 intervening in the transmission and reception executes the operation of returning the received signal and the operation of transmitting data to the heat source device 1 in each case,
Moreover, the data is temporarily stored. According to this, it is possible to reliably correct the time delay of communication required for executing carrier sense, waiting for a signal request from the heat source device 1, and the like, and reducing errors caused by wired / wireless conversion in the present system. The occurrence of communication errors such as output can be avoided.

The floor heating remote controller 4A and the like and the heat source unit 1
A relay 6 (or 42, 53) is provided between the remote controller 4A and the remote controller 4A for floor heating, etc., so that at least the relay 6 (or 42, 53) can be wirelessly communicated.
(Or 42, 53) and the wiring work between the remote controller become unnecessary, and the construction of the hot water heating system can be facilitated. Also, even if there is an obstacle that attenuates the radio wave between the heat source unit 1 and the floor heating remote controller 4A or the like, the radio wave is relayed by the repeater 6 (or 42, 53).
The transmission / reception state of radio waves can be favorably maintained.

Although the present invention has been described based on one embodiment, it is obvious that the present invention is not limited to this.

[0057]

According to the present invention, a repeater is provided between a remote controller and a heat source unit, and wireless communication can be performed between the repeater and the remote controller. Wiring work between the controller and the controller becomes unnecessary, and construction of the hot water heating system can be facilitated. Further, even if there is an obstacle between the heat source device and the remote controller that attenuates the radio wave, the radio wave is relayed by the repeater, so that the transmission / reception state of the radio wave can be maintained well.

[Brief description of the drawings]

FIG. 1 is a principle diagram showing an embodiment of a hot water heating system according to the present invention.

FIG. 2 is a control block diagram of the hot water heating system shown in FIG.

3 is an external view of a remote controller for floor heating of the hot water heating system shown in FIG.

FIG. 4 is a perspective view showing an example of a test run completion connector.

FIG. 5 is a perspective view showing how to use a floor temperature detector.

FIG. 6 is a flowchart showing a communication mode during normal operation.

FIG. 7 is a flowchart of a normal operation program.

FIG. 8 is a flowchart showing a communication mode at the time of test operation.

FIG. 9 is a flowchart of a test operation program.

FIG. 10 is a control block diagram of a hot water heating system according to another embodiment.

FIG. 11 is a control block diagram of a hot water heating system according to still another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat source unit 2A, 2B Floor mat (Hot water heater) 2C Air conditioner (Hot water heater) 2D Fan convector (Hot water heater) 5A, 5B Heat valve 4A, 4B Remote controller for floor heating 6, 42, 53 Repeater 31 Communication Circuit 32 Interface unit 32a Antenna L1 to L5 Communication line

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masafumi Okada 1-1, Ohitomachi, Moriguchi-shi, Osaka Sanyo Electric Gas Equipment Co., Ltd. (72) Shinichi Kasahara 1-1, Ohitohimachi, Moriguchi-shi, Osaka Sanyo Electric Gas Equipment Co., Ltd. (72) Takashi Ando 1-1, Dainitsuhigashi-cho, Moriguchi-shi, Osaka F-term (reference) in Sanyo Electric Gas Equipment Co., Ltd. 3L070 AA09 BB01 DD07 DE09 DG01 DG06

Claims (6)

[Claims] 1. A hot water heater comprising a heat source unit, a plurality of hot water heaters connected to the pipes, and remote controllers corresponding to the respective hot water heaters, wherein the remote control unit controls communication of the heat source units. In the system, a relay is provided between the remote controller and the heat source device, and wireless communication is possible between the relay and the remote controller. 2. The hot water heating system according to claim 1, wherein wired communication is possible between said heat source unit and said repeater. 3. The hot water heating system according to claim 1, wherein wireless communication is possible between said heat source device and said repeater. 4. The heat source unit or the relay unit includes a wired interface unit, a wireless interface unit, and a selection switch therebetween, and when the system is installed, the heat source unit and the relay unit are switched by switching the selection switch. The hot water heating system according to claim 1, wherein either a wired communication connection or a wireless communication connection can be selected. 5. The heat source device is housed in a pipe shaft, and the relay is provided outside and near the pipe shaft.
The hot water heating system according to the item. 6. The hot water heating system according to claim 1, wherein the heat source unit is installed in a basement, and the repeater is provided near an opening from the basement to the ground. .