JPH07260173A - Indoor device of hot water heater - Google Patents

Abstract

PURPOSE:To improve a comfortable feeling by a method wherein the number of rotation of a blower of a hot water heater is increased or decreased in response to an amount of feeding water for a heat exchanger. CONSTITUTION:A hot water heater is comprised of an indoor device 1 for supplying hot air into a room and an outdoor device 2 for generating hot water. There are provided within a casing 3 of the indoor device 1 a heat exchanger 4 with hot water being applied as a heat source, a blower 5 for feeding out hot air into a doom, and a flow rate control valve 8 for adjusting an amount of feeding water for the heat exchanger 4. The flow rate control valve 8 is provided with an angle sensor 11 for use in sensing in a stepwise manner a rotating angle of the flow rate control valve 8. The control part 9 calculates an amount of feeding water for the heat exchanger 4 in reference to the detected angle of the angle sensing device 11 so as to determine a maximum number of rotation of the blower 5 corresponding to the amount of feeding water.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor unit of a hot water heater called a fan convector, and more particularly to control of a blower of the indoor unit.

[0002]

2. Description of the Related Art A hot water heater includes an indoor unit 21 called a fan convector as shown in FIG. 5 and an outdoor unit 22 called an oil-fired hot water boiler and used as a heat source unit of the indoor unit 21. There is something. The indoor unit 21 is a heat exchanger 23 that uses the hot water from the outdoor unit 22 as a heat source, a flow control valve 24 that adjusts the amount of water passing to the heat exchanger 23, and the air warmed by the heat exchanger 23 to the room. It is composed of a blower 25 and the like for sending out, one outdoor unit 22 is composed of a boiler 26 that generates hot water, a cis tank 27 that stores hot water, a pump 28 that circulates hot water, and the like, and between the outdoor unit 22 and the indoor unit 21. Hot water forward pipe 29 and return pipe 30
It is tied with. In addition, the flow control valve 2 is installed on the indoor unit 21 side.
4, operation unit 3 including a control unit 31 for controlling the blower 25, etc.
2, there is a control unit 33 for controlling the boiler 26, the pump 28, etc. on the outdoor unit 22 side, and both are connected by a signal line. The speed of the blower 25 on the indoor unit 21 side is controlled according to the room temperature, and when the indoor unit 21 is installed in a small room, or when the heating load is too small due to a small heating load such as in the beginning of autumn or early spring. The flow control valve 24 limits the amount of water flowing to the heat exchanger 23.

[0003]

By the way, in the conventional indoor unit 21, the control of the blower 25 and the control of the flow rate control valve 24 are not directly related to each other, and the amount of water passing to the heat exchanger 23 is increased because the room is overheated. Pre-configured blower, even when restricted
Since the maximum rotation speed of 25 does not change, even if the temperature of the hot air drops due to the restriction of the water flow rate, the air volume does not decrease and there is a problem that comfort is impaired. Therefore,
An object of the present invention is to provide an indoor unit of a hot water heater that does not cause the above-mentioned problems.

[0004]

The present invention has been made to solve the above problems, and adjusts the heat exchanger using hot water as a heat source in the housing and the amount of water passing to the heat exchanger. A flow control valve, a blower for sending the air warmed by the heat exchanger into the room, a control means for the flow control valve and the blower, and the rotation speed of the blower to the heat exchanger. For example, the flow control valve is provided with an angle detection device that detects the rotation angle of the flow control valve stepwise, and the heat exchanger is detected from the detection angle of the same angle detection device. The amount of water passing through was calculated, and the maximum rotation speed of the blower was set according to the amount of water passing.

[0005]

With the above configuration, when the rotation angle of the flow control valve changes, the rotation angle is detected by the angle detection device, the amount of water flow to the heat exchanger is calculated from the detected angle, and the amount of water flow is determined according to this amount of water flow. Since the maximum rotation speed of the blower is set, for example, if the amount of water passing through the heat exchanger is reduced and the warm air temperature is reduced, the air amount can be reduced.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows a schematic configuration of a hot water heater, where 1 is an indoor unit (fan convector) of the hot water heater,
2 is an outdoor unit (heat source unit) of the hot water heater. On the side of the indoor unit 1, a heat exchanger 4 that uses hot water from the outdoor unit 2 as a heat source and a blower 5 that sends the air warmed by the heat exchanger 4 to the room are disposed in the housing 3. Although not shown in the drawings, a boiler that generates hot water, a cis tank that stores hot water, and a pump that circulates the hot water are arranged on the outdoor unit 2 side. The outdoor unit 2 and the indoor unit 1 are connected by a hot water outflow pipe 6 and a return pipe 7, and the outflow pipe in the indoor unit 1 is provided with a flow rate control valve 8 for adjusting the amount of water passing to the heat exchanger 4. ing. Further, the indoor unit 1 side has an operation operation unit 10 having a control unit 9 for controlling the blower 5 and the flow control valve 8, and the outdoor unit 2 side has a control unit (not shown) for controlling a boiler, a pump, and the like. ), Both are connected by a signal line.

By the way, as shown in FIG. 2, the feature of the present embodiment is that the flow rate control valve 8 is provided with an angle detection device 11 for detecting the rotation angle of the flow rate control valve 8 in a stepwise manner. The control unit (microcomputer) 9 calculates the amount of water passing through the heat exchanger 4 from the detected angles a, b, and c of the device 11, and sets the maximum rotation speed of the blower 5 according to the amount of water passing. is there. The angle detection device 11 includes a rotating body 12 that rotates according to the operation of the flow control valve 8, and a plurality of switches (microswitches) 13, 14 arranged above the rotating body 12.
It consists of 15 and. FIG. 3 shows the relationship between the rotating body 12 and the switch 13, for example, from the side. (A) shows the switch.
When 13 is ON, (b) is when the rotating body 12 is rotating and the switch 13 is OFF.

ON / OFF of the switches 13, 14, 15 is determined by the position of the rotating body. As shown in FIG. 4, when the flow control valve 8 is fully opened, the switches 13, 14, 15 are all in the ON state and the blower 5 The maximum rotation speed (maximum fan mode) and the maximum heating capacity of both are Hi. Further, when the flow control valve 8 operates and the rotary body 12 rotates by the detection angle a or more, the switch 13 is turned off, but both the maximum rotation speed and the maximum heating capacity of the blower 5 are kept at Hi. Rotating body 12 detects detection angle b
With the above rotation, the switches 13 and 14 are turned off, and both the maximum rotation speed and the maximum heating capacity of the blower 5 are switched to Lo. Further, the rotating body 12 rotates to rotate all the switches 13, 1
At the rotation angle c at which 4 and 15 are turned off, the flow rate control valve 8 is closed and the heating operation itself is stopped.

[0009]

As described above, in the hot water heater as described above, since the optimum air is blown according to the amount of water passing through the heat exchanger, the warm air in the room is also comfortable and comfortable. Is improved.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a hot water heater according to the present invention.

FIG. 2 is a schematic configuration diagram of an angle detection device for a flow control valve showing an embodiment of the present invention.

FIG. 3 is an operation explanatory diagram of a switch according to the present invention.

FIG. 4 is an explanatory diagram of a control operation showing an embodiment of the present invention.

FIG. 5 is a schematic configuration diagram of a hot water heater showing a conventional example.

[Explanation of symbols]

 1 Indoor unit (fan convector) 2 Outdoor unit (heat source device) 3 Enclosure 4 Heat exchanger 5 Blower 6 Forward pipe 7 Return pipe 8 Flow control valve 9 Control part 10 Driving operation part 11 Angle detection device 12 Rotating body 13 Switch ( Micro Switch) 14 Switch (Micro Switch) 15 Switch (Micro Switch)

Claims (2)

[Claims] 1. A heat exchanger using hot water as a heat source in a housing,
A flow control valve for adjusting the flow rate of water to the heat exchanger, a blower for sending the air warmed by the heat exchanger into the room, a control means for the flow control valve and the blower, and the like, An indoor unit of a hot water heater, wherein the number of revolutions of the blower is set according to the amount of water passing through the heat exchanger. 2. A heat exchanger using hot water as a heat source in a housing,
A flow control valve for adjusting the flow rate of water to the heat exchanger, a blower for sending the air warmed by the heat exchanger into the room, a control means for the flow control valve and the blower, and the like, The flow rate control valve is provided with an angle detection device that detects the rotation angle of the flow rate control valve in a stepwise manner, and the amount of water flow to the heat exchanger is calculated from the detection angle of the angle detection device. An indoor unit for a hot water heater, characterized in that the maximum rotation speed of the blower is set.