JP3024729B2 - Hot water heater indoor unit - Google Patents

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.

[0002]

2. Description of the Related Art A hot water heater includes, for example, an indoor unit 31 called a fan convector as shown in FIG. 2 and an outdoor unit 32 called an oil-fired hot water boiler and used as a heat source unit of the indoor unit 31. There is something. The indoor unit 31 includes a heat exchanger 33 that uses hot water from the outdoor unit 32 as a heat source, a blower 34 that sends out the air warmed by the heat exchanger 33 to the room, and the like. It comprises a boiler 35 to generate, a cis tank 36 for storing hot water, a pump 37 for circulating hot water, and the like. The outdoor unit 32 and the indoor unit 31 are connected by a hot water outgoing pipe 38 and a return pipe 39, and the outgoing pipe 38 Is provided with an on-off valve 40 for adjusting the flow of hot water. The indoor unit 31 has an operation unit 41 having a control unit for controlling the blower 34 and the like, and the outdoor unit 32 has a control unit 42 for controlling the boiler 35, the pump 37, the on-off valve 40 and the like. , Both are connected by a signal line.

[0003]

Meanwhile, a heater using hot water has a floor heater separately from the hot water (hot air) heater configured as described above. Since each of these uses hot water generated by the outdoor unit, it is convenient if the hot water flowing from the outdoor unit 32 to the indoor unit 31 can be used for floor heating, for example. However, the temperature of hot water used for floor heating is 6
0 ° C or less is appropriate, whereas the outdoor unit 32
Since the temperature of the hot water flowing into 33 is as high as about 80 ° C., it cannot be used for floor heating as it is. In addition,
Since the temperature of the hot water returning from the heat exchanger 33 to the outdoor unit 32 has dropped to about 60 ° C., it can be used for floor heating somehow, but in order to reach such a hot water temperature, the blower 34 on the indoor unit 31 side must be operated. It was impossible to perform only floor heating with the requirement that the heating be performed. Accordingly, it is an object of the present invention to solve these problems and to provide an indoor unit of a hot water heater in which hot water circulated through a heat exchanger can be used for floor heating.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a hot water supply in a housing having a suction port for indoor air at an upper rear portion and an air outlet to a room at a lower front portion. A heat exchanger having a heat source and a blower or the like for sending air warmed by the heat exchanger into a room, and a heat exchange unit for generating hot water for floor heating at an upper portion of the heat exchanger. In addition to being provided integrally, a guide plate for suction air is provided between the upper end of the suction port and the lower boundary of the heat exchange unit for floor heating.

[0005]

According to the above-mentioned structure, it is possible to generate hot water for floor heating by conducting heat from the lower heat exchange unit for heating warm air to the upper heat exchange unit for heating floor, and to generate the hot water for floor heating. There is a suction air guide plate between the upper end of the rear inlet and the lower boundary of the floor heating heat exchange section, so that airflow to the floor heating heat exchange section can be blocked, making it suitable for floor heating. Hot water can be obtained efficiently.

[0006]

An embodiment of the present invention will be described below with reference to FIG. FIG. 1 shows the schematic configuration of a hot water heater and the relationship between floor heating and the following. 1 is an indoor unit of a hot water heater (fan convector), 2 is an outdoor unit of a hot water heater (heat source unit), and 3 is a floor heater. It is a panel. Reference numeral 4 denotes a housing of the indoor unit 1, an indoor air intake port 5 is provided at an upper rear portion of the housing 4, and a blowout port 6 for indoors is provided at a lower front portion, and hot water from the outdoor unit 2 is provided inside. A heat exchanger 7 as a heat source and a blower 8 for sending air warmed by the heat exchanger 7 into a room are arranged. Although not shown in the drawing, one boiler for generating hot water, a cis tank for storing hot water, a pump for circulating hot water, and a hot water An open / close valve for adjusting the flow of air is arranged, and the outdoor unit 2
And the indoor unit 1 are connected by an outgoing pipe 9 and a return pipe 10 of warm water. The indoor unit 1 has an operation unit 12 having a control unit 11 for controlling the blower 8 and the like, and the outdoor unit 2 has a control unit (not shown) for controlling a boiler, a pump, an on-off valve and the like. And they are connected by a signal line.

The feature of this embodiment is that a heat exchanger 7a for generating hot water for floor heating is integrally provided above the heat exchanger 7, and the heat exchanger 7 (heat exchange for hot air heating) is provided. ) Is used to generate hot water for floor heating, and a suction air guide plate 13 is provided between the upper end of the indoor air suction port 5 and the lower boundary of the floor heating heat exchange unit 7a. In addition, while improving the flow of air to the heat exchange unit 7b for warm air heating, the flow of air to the heat exchange unit 7a for floor heating is interrupted, and hot water for floor heating is efficiently generated. It is. In addition, a water supply port 14 communicating with the heat exchange section 7a is provided at an upper portion of the housing 4 to facilitate water supply, and a piping connection portion 15 is provided at a lower portion to provide a hot water outflow pipe 16 to the floor heating panel 3 and a floor heating. The connection of the return pipe 17 of the hot water from the panel 3 can be performed. Further, a hot water tank 18 and a pump 19 are provided in one (outgoing pipe 7c) of the hot water path connecting the heat exchange section 7a and the pipe connection section 15, and a hot water temperature detecting means (the return pipe 7d) is provided in the other (return pipe 7d). Temperature sensor) 20 is provided.

The operation operation unit 12 is capable of instructing either one of hot air heating and floor heating or simultaneous operation. In the case of only hot air heating, the outdoor unit 2 and the blower 8 of the indoor unit 1 are connected to each other. Is operated, and in the case of only floor heating, the outdoor unit 2 and the pump 19 in the indoor unit 1 are operated. In addition, since the blower 8 does not operate in the operation of only the floor heating, the amount of heat exchange in the heat exchange unit 7a increases, and the temperature of the hot water to the floor heating panel 3 may increase more than necessary. Therefore, in the present embodiment, when the return hot water temperature detected by the temperature sensor 20 exceeds a set value, the amount of hot water circulated from the outdoor unit 2 to the heat exchange unit 7b is limited, and the heat exchange in the heat exchange unit 7a is performed. The amount is reduced so that the temperature of the hot water to the floor heating panel 3 approaches the set value.

[0009]

According to the above-described hot water heater, the hot water circulated through the fan convector heat exchanger is not used as it is for the floor heating, but the floor heat is supplied to the fan con vector heat exchanger. The heat exchange unit that generates hot water for the unit is provided integrally, and the hot water generated by the heat exchange unit is used for floor heating, and the upper end of the suction port at the rear of the housing and the floor heating unit A guide plate for suction air is provided between the lower boundary of the heat exchange section to efficiently obtain hot water suitable for floor heating, so it is possible to use both hot air heating by fan convector and floor heating. In addition to this, it is convenient to operate only floor heating, and it requires only one outdoor unit, which saves construction work and makes the heating system cheaper.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a hot water heater showing one embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of a hot water heater showing a conventional example.

[Description of Signs] 1 Indoor unit (fan convector) 2 Outdoor unit (oil-fired hot water boiler) 3 Floor heating panel 4 Housing 7 Heat exchanger 7a Heat exchange unit for floor heating 7b Heat exchange unit for hot air heating 8 Blower 11 Control section 12 Operation section 13 Suction air guide plate 14 Water supply port 15 Pipe connection section 18 Hot water tank 19 Pump 20 Temperature detection means (temperature sensor)

Claims (6)

(57) [Claims] 1. A heat exchanger using hot water as a heat source in a housing having a suction port for indoor air at an upper rear portion and an outlet to a room at a lower front portion, and air heated by the heat exchanger into a room. In a device provided with a blower for sending out, a heat exchanger for generating hot water for floor heating is integrally provided at an upper portion of the heat exchanger, and an upper end of the suction port and a lower portion of the heat exchanger for floor heating are provided. An indoor unit for a hot water heater, wherein a suction air guide plate is provided between boundaries. 2. The indoor unit of the hot water heater according to claim 1, wherein a pump for circulating the hot water generated in the heat exchange unit to floor heating is provided in the housing. 3. The indoor unit of a hot water heater according to claim 1, wherein a hot water tank for floor heating is provided in the housing. 4. The indoor unit of a hot water heater according to claim 1, wherein the operation of the pump is performed from an operation operation unit of the indoor unit. 5. The hot water heater indoor unit according to claim 1, wherein a hot water temperature detecting means is provided in a hot water path between the heat exchange section and the floor heating panel. 6. The indoor unit of a hot water heater according to claim 1, wherein a water supply port for floor heating is provided at an upper portion of the housing.