JP2924992B2 - 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. 4 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, and a blower 34 that sends out the air heated by the heat exchanger 33 to the room. 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, 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 includes floor heating in addition to 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. Also,
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. Therefore, an object of the present invention is to solve these problems and to provide an indoor unit of a hot water heater in which hot water circulated through the heat exchanger 13 can be used for floor heating.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and includes a heat exchanger in which hot water is used as a heat source and an air heated by the heat exchanger in a housing. A heat exchanger for generating hot water for floor heating is provided integrally with the heat exchanger, and a switching valve for switching the capacity of floor heating to the hot water path of the heat exchanger. I decided to provide.

[0005]

With the above construction, the hot water circulating through the heat exchanger of the indoor unit is not used as it is for floor heating, but the heat exchanger is integrally provided with a heat exchanger for generating hot water for floor heating. Since the hot water generated by heat conduction in the heat exchange section is used for floor heating, the temperature of the hot water does not become too high, and only the floor heating can be performed, and the switching valve is provided. The operation of floor heating can be switched by the operation of.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows a schematic configuration of a hot water heater and a relationship between floor heating, and 1 denotes an indoor unit of a hot water heater (fan convector), 2 denotes an outdoor unit of a hot water heater (oil-fed hot water boiler), and 3 denotes Floor heating panel. On the indoor unit 1 side, a heat exchanger 5 using hot water from the outdoor unit 2 as a heat source is provided in a housing 4 of the indoor unit 1.
And a blower 6 for sending out the air warmed by the heat exchanger 5 to the room, and a boiler 7 for generating hot water, a cis tank 8 for storing hot water, and a hot water circulation And a pump 9 to be driven. The outdoor unit 2 and the indoor unit 1 are connected by a hot water outgoing pipe 10 and a return pipe 11, and the outgoing pipe 10 is provided with an on-off valve 12 for adjusting the flow of hot water. The indoor unit 1 has an operation unit 13 provided with a control unit for controlling the blower 6 and the like. The outdoor unit 12 has a control unit (not shown) for controlling the boiler 7, the pump 9, the on-off valve 12, and the like. And the two are connected by a signal line.

The feature of this embodiment is that the heat exchanger 5 is provided integrally with a heat exchange section 5a for generating hot water for floor heating by utilizing heat conduction from the heat exchanger 5. That is, a plurality of switching valves (three-way valves) 5c and 5d for switching the floor heating capacity are provided in the hot water path 5b of the heat exchange section 5a. The hot water generated in the heat exchange section 5a flows into the floor heating panel 3 via the going pipe 14, the pump 15, and the going pipe 16, and is returned to the heat exchanging section 5a via the return pipe 17. The ON / OFF operation of the pump 15 and the switching operation of the switching valves (three-way valves) 5c and 5d can be operated by an operation operation unit 13 provided in the upper front part of the housing 4. In addition, a water inlet for floor heating is provided at the upper part of the housing 4.
The return pipe 17 is provided with a drain port 19, respectively. In the drawing, reference numeral 20 denotes a suction port for indoor air, and reference numeral 21 denotes an outlet for warm air. FIG. 2 shows a hot water path 5b of the heat exchange section 5a.
And the switching valves (three-way valves) 5c and 5d are more easily understood. The switching valves 5c and 5d have a floor heating capacity of "strong".
Switching is performed as shown in FIG. 3 according to the selection of “medium” and “weak”. In the present embodiment, the floor heating pump 15 is provided on the side of the outgoing pipes 15 and 16.

[0008]

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 section that generates hot water for use is provided integrally, and the hot water generated by the heat exchange section is used for floor heating, so the temperature of the hot water does not become too high, and the hot air generated by the fan convector In addition to being able to use both heating and floor heating, it is possible to operate only floor heating, and since the floor heating capacity can be switched, it is convenient, and since only one outdoor unit is required, there is no need for construction work. , Resulting in a cheaper heating system.

[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 plan view illustrating a main configuration of the present invention.

FIG. 3 is a diagram illustrating the operation of the switching valve according to the present invention.

FIG. 4 is a schematic configuration diagram of a hot water heater showing a conventional example.

[Explanation of symbols]

 Reference Signs List 1 indoor unit (fan convector) 2 outdoor unit (oil-fired hot water boiler) 3 floor heating panel 4 housing 5 heat exchanger 5a heat exchange unit 5b hot water path 5c switching valve (three-way valve) 5d switching valve (three-way valve) 6 blower 10 Feed pipe 11 Return pipe 12 On-off valve 13 Operation section 14 Feed pipe 15 Pump 16 Feed pipe 17 Return pipe 18 Filling port 19 Drain port 20 Drain port

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-80036 (JP, A) JP-A-60-148520 (JP, U) JP-A-3-34513 (JP, U) Jiko 47- 32764 (JP, Y1) (58) Fields investigated (Int. Cl. ⁶ , DB name) F24D 3/00 F24D 19/00

Claims (4)

(57) [Claims] 1. A heat exchanger using hot water as a heat source in a housing;
In a device provided with a blower or the like for sending air warmed by the heat exchanger into a room, a heat exchange unit for generating hot water for floor heating is provided integrally with the heat exchanger, and the hot water of the heat exchange unit is provided. An indoor unit for a hot water heater, wherein a switching valve for switching a floor heating capacity is provided in a path. 2. The indoor unit for a hot water heater according to claim 1, wherein a pump for floor heating is provided in the housing. 3. The operation unit of the indoor unit, wherein the operation of the pump and the switching valve is performed from an operation operation unit of the indoor unit.
The indoor unit of the hot water heater described. 4. The indoor unit for a hot water heater according to claim 1, wherein a water inlet for floor heating is provided at an upper portion of the housing.