JPH0124493Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention relates to a display device for a fan convector that performs indoor heating etc. by using a heat medium circulated and supplied from a heat source device.

(b) Prior art This type of conventional fan convector was disclosed in Japanese Patent Application Laid-open No. 1983
It is used in combination with a heat source device as disclosed in Japanese Patent Application Laid-open No. 133540 and Japanese Patent Application Laid-open No. 74527/1983.

This will be explained based on the drawings in Japanese Unexamined Patent Publication No. 57-74527. That is, in FIG. 1, 1 is a heat source device, which includes a heat exchanger 3 heated by a burner 2, a circulation pump 4 that circulates hot water in this heat exchanger,
A circulation pump 4 and a control device 5 for the burner 2 are installed inside. 6 and 7 are fan convectors, which include heat exchangers 8 and 9, blowers 10 and 11 that forcefully blow indoor air to the heat exchangers, and operation control devices 12 and 13 that control the operation of the blowers, respectively. Decorated. The heat exchangers 8 and 9 of the fan convectors 6 and 7 are connected in parallel to the heat exchanger 3 of the heat source device via a hot water circulation pipe 14 and a branch pipe 15 from this, forming a hot water circulation path 16. ing.

In the hot water heating system described above, when the operation control device 13 of the fan convector 7 serving as the parent device issues an operation command, the blower 11 is operated, and an operation signal is also sent to the control device 5 of the heat source device. operates the circulation pump 4 and burner 2. Therefore, the hot water in the heat exchanger 3 heated by the burner 2 is sent to the heat exchanger 9 of the fan convector 7, and heats it by exchanging heat with indoor air circulated by the blower 11. On the other hand, for hot water, Juan Convector 6
Since it is also sent to the heat exchanger 8 of the operation control device 1
2 has issued an operation command, the blower 10 is operated and indoor air is heated.

By the way, when the fan converter vectors 6 and 7 are provided with indicator lamps, the operation control device 12 of the fan converter 6, which operates independently of the heat source device 1, connects the operation switch 17 to the AC power source 16, as shown in FIG. A drive motor 10' of the blower 10 is connected through the drive motor 10', and a resistor 18 and an indicator lamp 19 are connected in series in parallel with the drive motor 10'.
The connecting terminals 20 and 21 are led out from both ends, and the connecting terminals 20 and 21 are insulated. Then, when the operation switch 17 is turned on (when the drive motor 10' is in operation), the display lamp 19 is turned on to notify that the fan converter 6 is in operation.

On the other hand, the operation control device 13 of the fan convector 7 that interlocks the heat source equipment shares the operation control device 12 of the fan convector 6, and cuts and insulates the part marked with an x in FIG. The one shown in Figure 3 is used. And connection terminal 2
0 and 21, and connect these connection terminals 20 and 21.
Voltage signal lines 22 and 23 derived from the control device 5 of the heat source device 1 are connected to the burner 2, so that the indicator lamp 19 is turned on when the burner 2 is in the combustion state. Note that in FIGS. 2 and 3, a circuit for supplying an operating signal from the fan converters 6 and 7 to the heat source device 1 is omitted for simplicity.

In this way, conventional fancon vectors6,7
The wiring for the indicator lamp 19 was cut on-site, the terminals 20 and 21 were insulated, and switching connections were made, and the indicator lamp 19 was used both to display the operation of the fan converter and to display combustion confirmation, resulting in incorrect wiring. In addition to worrying about poor connections and forgetting to insulate, there were also drawbacks that made wiring work dangerous.

(c) Purpose of the invention This invention has been made in view of the above-mentioned prior art, and its purpose is to easily and reliably switch an indicator lamp between a fan convector operation display and a combustion confirmation display. shall be.

(d) Structure of the invention The display device of the fan convector of this invention includes a heat exchanger to which a heat medium is circulated and supplied from a heat source device, a blower for forcedly blowing indoor air to the heat exchanger, and an operation control device for this blower. and an indicator lamp, a first signal terminal to which a voltage is supplied when the fan converter is in operation and a second signal terminal to which a voltage signal is supplied when the heat source device is in operation are connected to the circuit of the operation control device. The indicator lamp is provided on the circuit board and connected to either one of the signal terminals via a switching means such as a connector, and when the indicator lamp is used to indicate the operation of the blower,
It is selectively connected to the signal terminal and, when the indicator lamp is used for combustion confirmation display, to the second signal terminal, respectively, by a switching means.

(e) Example Hereinafter, an example in which this invention is applied to the hot water heating apparatus shown in FIG. 1 will be described with reference to the drawings.

Figures 4 and 5 are Juancon vector 6,
7 shows the operation control devices 12 and 13,
24 is an AC power outlet on the indoor side (not shown)
25 is an operation switch, 10' and 11' are drive motors for the blowers 10 and 11, and 26 is a circuit board. A resistor 27, a step-down transformer 28, an electronic thermocircuit 29, a relay 30, a diode 31, and connector terminals 32 to 36 are attached to the circuit board 26.
The drive motors 10', 11' are connected between both terminals of the power plug 24 via the operation switch 25 and the normally open first relay contact 301 of the relay 30.
The resistor 27 has one end connected to one terminal of the power plug 24 via the operation switch 25, the other end connected to the first terminal 321 of the connector terminal 32, and the second terminal 322 of the connector terminal 32 connected to the power supply plug 24. It is connected to the other terminal of the plug 24. The step-down transformer 28 has its primary side connected between both terminals of the power plug 24, and its secondary side connected to the electronic thermo circuit 29. 37 is a room temperature sensor such as a thermistor that supplies a room temperature signal to the electronic thermocircuit 29;
It is connected to the electronic thermo circuit 29 via the connector terminal 33 and a detachable connector (not shown). 38 is a temperature controller that supplies a room temperature setting signal to the electronic thermo circuit 29, and is disposed in the operation section (not shown) of the fan converter vectors 6 and 7 together with the operation switch 25, and is connected to the connector terminal 34 and a detachable connector. (not shown) to an electronic thermo circuit 29. The diode 31 connects the first terminal 351 and the second terminal 35 of the connector terminal 35 via the normally open second relay contact 302 of the relay 30.
It is connected between the two. 39 is a display device disposed in the display section of the fan convectors 6 and 7;
A circuit board 40 includes a resistor 41, a series circuit of a light emitting diode 42 and a diode 43 as an indicator lamp, and a resistor 4 connected in parallel with the light emitting diode 42.
Connector terminals 32 and 36 are provided at the ends of lead wires 45 and 46 led out from the circuit board 40.
A detachable connector 47 is provided. In addition,
The first terminal 361 of the connector terminal 36 is connected to the first terminal 35 of the connector terminal 35 via the relay contact 302.
1, and the second terminal 362 of the connector terminal 36 is connected to the third terminal 353 of the connector terminal 35, respectively.

FIG. 6 shows the control device 5 of the heat source device 1, where 48 is a power plug to be inserted into an outdoor AC power outlet (not shown), and 49 is a power plug whose primary side is connected between both terminals of the power plug 48. 50 is a full-wave rectifier whose input end is connected to the secondary side of the step-down transformer 49; 51 is a full-wave rectifier 5;
0, 52 and 53 are bus bars to which DC constant voltage is supplied from the constant voltage circuit 51, 54 is a relay connected between the buses 52 and 53, and 55 is connected in parallel with relay 54. The circulation pump 4 is connected between both terminals of the power plug 48 via the normally open relay contact 541 of the relay 54 . Further, a burner drive circuit 56 is connected between both terminals of the power plug 48 via a relay contact 541 and an output contact 551 of the combustion control circuit 55. 57 is the operation control device 12,
The first terminal 571 and the second terminal 572 connect to the bus bar 52 between the constant voltage circuit 51 and the relay 54 via the remote control wires l1 and l2. The third terminal 573 is connected to the remote control wire l.
3 to the combustion control circuit 55.

Next, the operation of the above-described embodiment device will be explained.

First, in the fan converter 6 that operates independently of the heat source device 1, the connector 47 of the display device 39
is connected to the connector terminal 32 in advance. Then, when the operation switch 25 is turned on, power is supplied to the electronic thermo circuit 29. Electronic thermo circuit 2
Reference numeral 9 compares the room temperature sensed by the room temperature sensor 37 and the set temperature set by the temperature controller 38, and energizes the relay 30 when the room temperature is lower than the set temperature.
Since the relay 30 closes the relay contact 301 when energized, the drive motor 10' switches the operation switch 2.
5 and relay contact 301 to operate the blower 10. When the room temperature exceeds the set temperature, the electronic thermo circuit 29 turns off the relay 30 and stops the blower 10. On the other hand, while the operation switch 25 is turned on, a half-wave current flows to the light emitting diode 42 via the resistor 27 of the circuit board 26, the resistor 41 of the display device 39, and the diode 43.
The light emitting diode 42 emits light to indicate that the fan converter 6 is in operation. At this time, since the light emitting diode 42 uses AC voltage (100V), the AC voltage is divided by the resistors 27 and 41, and the reverse voltage is transmitted to the diode 43.
Furthermore, the light emitting diode 4 due to the leakage current of the diode 43 and the light emitting diode 42
2 is protected by a resistor 44 connected in parallel to the light emitting diode 42.

Next, in the fan converter 7 that operates in conjunction with the heat source device 1, the connector 47 of the display device 39
to the connector terminal 36, and the connector 5 of the control device 5.
7 are connected to the connector terminals 35, respectively.
Then, when the operation switch 25 is turned on, power is similarly supplied to the electronic thermo circuit 29, and the electronic thermo circuit 29 controls the operation of the blower 11 so that the room temperature is maintained near the set temperature. When the relay 30 is energized by the electronic thermo circuit 29, the relay contact 3
02 is closed, the DC constant voltage of the constant voltage circuit 51 is supplied to the relay 54 and the combustion control circuit 55 of the control device 5. Therefore, the relay contact 541 is closed by energization of the relay 54, the circulation pump 4 is operated, the combustion control circuit 55 closes the output contact 551, and the burner drive circuit 56 is operated to cause the burner 2 to perform combustion. At this time, since the internal circuit of the combustion control circuit 55 is designed to be conductive and a constant DC voltage is also supplied between the first terminal 361 and the second terminal 362 of the connector terminal 36, the light emitting diode 42 A current flows and emits light, indicating that the heat source device 1 is in a combustion state.
In this case, the resistor 41 functions as a voltage adjustment resistor for a constant DC voltage.

As described above, according to this embodiment, the display device 3 disposed in the display section of the fan converter 6, 7
Connector 47 attached to operation control device 12,
By selecting and connecting the light emitting diode 42 to the connector terminals 32 and 36 of 13 on site, the light emitting diode 42 can be easily switched and used to display the operation of the fan converter 6 and 7 and to display the combustion confirmation of the heat source device 1. can.

In the above-described embodiment, the display device 39 is connected to one of the connector terminals 32 and 36 by the connector 47, but the display device 39 is connected to the terminal to which voltage is supplied when the fan converters 6 and 7 are in operation. A switch may be used to switch between the terminal and the terminal that supplies the voltage signal during operation of the heat source device 1.

(f) Effects of the idea This idea is structured as described above, so
With a simple switching operation using a switching means such as a connector, the indicator lamp can be switched between the operation display of the fan converter and the combustion confirmation display of the heat source equipment, making it possible to share the operation control device of the fan converter. , the reliability and safety of on-site wiring work can be improved.

[Brief explanation of the drawing]

Figure 1 is a schematic configuration diagram of a hot water heating system to which this invention is applied, Figures 2 and 3 are electric circuit diagrams of a conventional fan convector operation control device, and Figure 4 is an embodiment of this invention. FIG. 5 is a schematic perspective view of the circuit board of FIG. 4, and FIG. 6 is an electric circuit diagram of a control device for a heat source device according to an embodiment of the invention. be. 1...Heat source machine, 6,7...Fan convector, 8,9...Heat exchanger, 10,11...Blower, 12,13...Operation control device, 26...Circuit board, 32...Connector terminal (first signal terminal),
36... Connector terminal (second signal terminal), 42...
...Light emitting diode (indicator lamp), 47...Connector.

Claims (1)

[Scope of claim for utility model registration] (1) A heat exchanger to which a heat medium is circulated and supplied from a heat source device, a blower for forcing indoor air to the heat exchanger, an operation control device for this blower, and an indicator lamp. In the fan convector, a first signal terminal to which a voltage is supplied during operation of the fan convector and a second signal terminal to which a voltage signal is supplied during operation of the heat source device are provided on the circuit board of the operation control device, and A display device for a fan convector, characterized in that a display lamp is connected to either one of the signal terminals via a switching means. (2) A display device for a fan convector according to claim 1, wherein the switching means is a connector detachable from both signal terminals.