JP3085506B2 - 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 21 called a fan convector as shown in FIG. 3, 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 includes a heat exchanger 23 that uses hot water from the outdoor unit 22 as a heat source, and a blower 24 that sends air heated by the heat exchanger 23 indoors. It comprises a boiler 25 to generate, a cis tank 26 for storing hot water, a pump 27 for circulating hot water, and the like.The outdoor unit 22 and the indoor unit 21 are connected by a hot water outgoing pipe 28 and a return pipe 29, and the outgoing pipe 28 Is provided with an on-off valve 30 for adjusting the flow of warm water. The indoor unit 21 has an operation unit 32 having a control unit 31 for controlling the blower 24 and the like, and the outdoor unit 22 has a control unit 33 for controlling the boiler 25, the pump 27, the on-off valve 30 and the like. Yes, they 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 the hot water generated by the outdoor unit, it is convenient if, for example, the hot water flowing into the indoor unit 21 from the outdoor unit 22 can be used for floor heating. However, the temperature of hot water used for floor heating is 6
0 ° C or less is suitable, whereas the outdoor unit 22
Since the temperature of the hot water flowing into 23 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 23 to the outdoor unit 22 has dropped to about 60 ° C., it can be used for floor heating somehow, but to achieve such a hot water temperature, the blower 24 on the indoor unit 21 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 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 hot water storage tank is provided in a hot water path connecting the heat exchanger and the floor heating panel. , And a pump.

[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. Because the hot water generated by heat conduction in the heat exchange section is used for floor heating, hot water suitable for floor heating can be obtained, not only floor heating only operation, but also floor heating and conventional Street hot air heating can be used in combination, and the hot water path for floor heating is provided with a hot water storage tank, so that the temperature of the floor surface can be quickly raised, for example, at the start of floor heating.

[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, 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 heating panel. On the indoor unit 1 side, a heat exchanger 5 that uses hot water from the outdoor unit 2 as a heat source and a blower 6 that sends out the air warmed by the heat exchanger 5 to the room are arranged in a housing 4 of the indoor unit 1. Although not shown, a boiler that generates hot water, a cis tank that stores hot water, a pump that circulates hot water, and the like are arranged on one outdoor unit 2 side, which are not shown. The outdoor unit 2 and the indoor unit 1 are connected by a hot water outgoing pipe 7 and a return pipe 8. The indoor unit 1 has an operation unit 10 provided with a control unit 9 for controlling the blower 6 and the like. The outdoor unit 2 has an internal boiler, a pump, an on-off valve and the like (not shown). There is a control unit for controlling, and both 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. A hot water storage tank 11 and a pump 12 are provided in a hot water path connecting the heat exchange section 5a and the floor heating panel 3. The hot water generated in the heat exchange section 5a is passed through a hot water storage tank 11 attached to the back side of the housing 4, and flows into the floor heating panel 3 via a pump 12 and a forward pipe 13 at a lower portion of the housing 4, and returns. The heat is returned to the heat exchange section 5a via the pipe 14. The ON / OFF operation of the pump 12 and the blower 6, that is, the operation of floor heating and hot air heating can be performed by the operation operation unit 10 provided at the front upper portion of the housing 4. One or both can be performed simultaneously. In the drawing, reference numeral 15 denotes a suction port for indoor air, 16 denotes a hot air outlet, 17 and 18 denote pipe connections to the outdoor unit 2, and 19 and 20 denote pipe connections to the floor heating panel 3. FIG. 2 shows a list of the operations of the control unit 9. If both the floor heating and the hot air heating are stopped, all of the blower 6, the pump 12, and the heat source unit (outdoor unit) 2 are stopped.
Only the hot air heating controls the blower 6 and the heat source unit 2,
The pump 12 and the heat source unit 2 are controlled only by the floor heating, and the blower 6, the pump 12 and the heat source unit 2 are controlled by the simultaneous operation of the hot air heating and the floor heating.

[0008]

According to the hot water heater described above, the hot water circulated through the heat exchanger is not used as it is for floor heating, but the hot water generated by heat conduction of the heat exchanger is used. Because it is designed to be used for floor heating, the temperature of the hot water is not too high, not only is it possible to use hot air heating with fan convectors and floor heating together, but it can also operate only floor heating, and There is a hot water storage tank in the floor heating hot water path, so the floor heating panel can be heated at the same time as floor heating is started, which is effective for warming the floor more quickly. This saves time and results 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 an explanatory diagram of an operation of a control unit according to the present invention.

FIG. 3 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 (heat source unit) 3 floor heating panel 4 housing 5 heat exchanger 5a heat exchange unit 6 blower 7 outgoing pipe 8 return pipe 9 control unit 10 operation operation unit 11 hot water storage tank 12 pump 13 Outgoing pipe 14 Return pipe 15 Inlet 16 Outlet

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-62-245034 (JP, A) JP-A-5-39950 (JP, A) Fully open Showa 60-69952 (JP, U) Really open Showa 51- 36243 (JP, U) Fully open sho 59-26790 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24D 19/00 F24D 3/00

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 exchanger for generating hot water for floor heating is provided integrally with the heat exchanger, and the heat exchanger and the floor are provided together. A hot water storage tank in the hot water path connecting the heating panel,
An indoor unit for a hot water heater, comprising a pump. 2. The hot water storage tank on the back side of the housing,
The indoor unit of the hot water heater according to claim 1, wherein the pump is provided at a bottom of the housing. 3. The hot water heater indoor unit according to claim 1, wherein the hot water storage tank is surrounded by a heat insulating material. 4. The indoor unit of a hot water heater according to claim 1, further comprising a detachable floor heating pipe connection portion provided at one lower side of the housing.