JP2000283475A - Hot water heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate regulation of a hot water temperature while eliminating attached units and materials by recirculating a part of a hot water returning from a hot water return circuit through a hot water recirculation supply circuit, thereby preventing temperature fluctuation at a heating section or deformation of floor, and the like. SOLUTION: Hot water from a heat source machine 1 is fed through a hot water plug 5, a hot water supply hose 4a, a hot water recirculation means 9, and the like, to a hot water carpet 2 thence to a hot water return hose 4b and a bypass pipe 10 where a part of hot water is introduced to the hot water recirculation means 9. The hot water flows from an inlet 12 into the recirculation means 9 and ejected from a nozzle to an ouffet 16. A part of return hot water is passed through the bypass pipe 10 by the ejector effect and mixed with supply hot water from a nozzle opening 13a. Since return hot water from the hot water carpet 2 is mixed with supply hot water, temperature of the supply hot water flowing from the outlet 16 into the inlet of a hot water pipe 2a is 60-65 deg.C and it is about 55 deg.C at the outlet. Temperature difference between the inlet and outlet is decreased to 5-10 deg.C. Furthermore, the temperature can be set at an appropriate level.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water heating apparatus for uniforming a temperature distribution in a hot water heating apparatus such as a hot water carpet and a floor heating panel.

[0002]

2. Description of the Related Art In a conventional hot water heating apparatus for heating by circulating hot water generated by a heat source unit in a hot water pipe, a temperature of an input hot water is set for each equipment constituting a system such as a fan convector, a hot water carpet, and a floor heating panel. For example, in the case of a hot water carpet, if the circulation direction of the hot water is the same, the inlet side of the hot water mat changes to a high temperature and changes to a low temperature toward the outlet side, so the temperature distribution of the hot water carpet is uneven. There was a problem of becoming.

FIG. 6 shows a conventional hot water heating system for heating with a fan convector and a hot water carpet which has been made to solve this problem. In the figure, 1 is a heat source unit, 2 is a hot water carpet, 2a is a hot water pipe, 3 is a fan convector,
4a is a hot water hose of a hot water circulation going circuit connecting the heat source device 1 and the hot water mat 2 via a hot water outlet 5 and a hot water plug 6, 4b is a hot water hose of a hot water circulation return circuit connecting the hot water mat 3 and the heat source device 1, 7a is Hot water connection hose for outgoing circuit,
7b is a hot water connection hose of a return circuit, 8 is a connection tool, and 11 is a flow control valve.

In this configuration, hot water discharged from the heat source unit 1 is supplied with a hot water plug 5, a hot water outlet 6, a hot water living hose 4,
a, sent to the hot water carpet 2 via the flow control valve 11 and returned to the heat source device 1 via the hot water pipe 2a, the hot water return hose 4b, the hot water outlet 6, and the hot water plug 5.
Then, the flow rate of the hot water flowing through the hot water carpet 2 was adjusted by the flow rate adjusting valve 11 to adjust the temperature of the hot water carpet 2. However, when the flow rate is adjusted by the flow rate adjusting valve 9, there is a possibility that uneven temperature or deformation may occur in a device having a long internal pipe such as a hot water carpet or a floor heating panel.

FIG. 7 shows a proposed conventional hot-water floor heating apparatus disclosed in Japanese Patent Application Laid-Open No. 8-338386, for example, which further solves the problem that the temperature distribution of the hot-water carpet 2 becomes non-uniform. . In the figure, 1 is a heat source unit, 41 is a cistern, 2 is a hot water mat, 2a is a hot water pipe laid in the hot water mat 2, 40a is a hot water circulation going line connecting the heat source unit 1 and the hot water mat 2, 40b is a hot water mat 2 A hot water circulation return line that connects the heat source unit 1 to the heat source device 1 is a circulation pump attached to the hot water circulation outgoing line 40a. 4
Reference numeral 3 denotes a switching unit, which is a hot water circulation going line 40a.
, A return side three-way valve 45 attached to the hot water circulation return line 40b, and a control circuit 46 for controlling the forward side three-way valve 43 and the return side three-way valve 44.
And

Next, the operation will be described. By the control circuit 46, the hot water discharged from the heat source unit 1 is supplied to the hot water circulation living line 40.
From a, the water is fed into the hot water mat 2 via the outgoing three-way valve 44, loops through the hot water pipe 2 a, and returns to the heat source device 1 from the hot water circulation return line 40 b via the return three-way valve 45. After this circulation is continued for a certain period of time, the outgoing three-way valve 44 and the return three-way valve 45 are switched. The hot water mat 2 → the return three-way valve 45 → the heat source device 1 flows through the pipe 2a in the opposite direction to the above. The control circuit 46 repeats the forward / reverse flow at regular time intervals, thereby making the temperature distribution of the hot water mat 2 uniform.

[0007]

However, the above-mentioned conventional hot-water floor heating apparatus has a problem that a switching unit is required, resulting in extra cost and maintenance. The present invention has been made in order to solve such a problem, and prevents temperature unevenness in a heating unit and deformation of a floor or the like due thereto, and easily adjusts the input hot water temperature so that the heating unit can obtain an appropriate heating output. An object of the present invention is to provide a hot water heating device that can be adjusted and does not require auxiliary equipment such as a hot water switching unit.

[0008]

According to the present invention, there is provided a hot water heating apparatus for heating a floor by circulating hot water generated by a heat source unit through a hot water pipe of a heating unit. A hot water recirculation means is provided on a hot water circulation outflow circuit line connecting the hot water pipes, and recirculates at least a part of the return hot water from the hot water return circuit to the hot water circulation outflow circuit.

The hot water recirculation means includes a nozzle portion provided between an inlet and an outlet through which the incoming hot water flows, an introduction hole provided immediately downstream of the nozzle portion and for introducing return hot water, Is provided.

[0010] The hot water recirculation means includes an inflow port into which the outgoing hot water flows, a nozzle pipe portion having a nozzle port provided on an outflow side, an opening along an outer periphery of the nozzle port of the nozzle pipe portion, An introduction pipe for returning the opening to introduce hot water and an introduction pipe provided on the outer periphery of the nozzle pipe.

[0011] The hot water recirculation means may include an inflow port into which the outgoing hot water flows, a nozzle pipe having a nozzle port provided on an outflow side, an opening along an outer periphery of the nozzle port of the nozzle pipe, An introduction path for returning hot water to the opening is formed on the outer periphery of the nozzle tube, and an introduction / nozzle tube portion provided with a throttle portion and a widening portion immediately downstream of the nozzle port is provided.

Further, the nozzle tube is movably attached to the introduction / nozzle tube so as to adjust the distance between the nozzle port and the throttle.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 shows a diagram of a case in which heating is performed by a fan convector and a hot water carpet. FIG. 1 is a configuration diagram of a hot water heating device showing a first embodiment of the present invention, and FIG. 2 is a sectional view of hot water recirculation means. is there.

In FIG. 1, reference numeral 1 denotes a heat source unit. 2 is a hot carpet, 2a is a hot water pipe, 3 is a fan convector, 4a
Is a hot water hose of a hot water circulation circuit connecting the heat source unit 1 and the hot water mat 2 through a hot water outlet 5 and a hot water plug 6;
b denotes a hot water hose of a hot water circulation return circuit connecting the hot water mat 3 and the heat source device 1, 7a denotes a hot water connection hose of an outgoing circuit, and 7b denotes a hot water connection hose of a return circuit. 8 is a connector, 9 is hot water recirculation means for recirculating return hot water, and 10 is a bypass pipe for returning hot water from the return hot water hose to the hot water recirculation means and introducing hot water.

Next, the configuration and connection of the hot water recirculation means 9 will be described with reference to FIG. In the figure, 11 is a flange connected upstream of the outgoing hot water connection hose 7a, 12 is an inflow port into which the outgoing hot water flows, 13 is a nozzle portion, 13a is a nozzle port, 14 is an inlet hole for introducing return hot water, and 15 is an inlet. Hole 1
A return hot water introduction flange having an opening communicating with 4, a flow outlet 16 and a flange 17 connected to the outgoing hot water connection hose 7a.

Reference numeral 20 denotes a return hot water bypass pipe, which comprises a bypass pipe 10 connected to the return hot water introduction flange 15, a return hot water pipe 19, and flanges 21 and 22 connected to the return hot water hose connection pipe 7b. .

Next, the operation of the hot water heating apparatus of the present invention configured as described above will be described with reference to FIGS. The hot water discharged from the heat source unit 1 is sent to the hot water carpet 2 via a hot water plug 5, a hot water outlet 6, a hot water living hose 4a, a hot water going connection hose 7a, and a hot water recirculating means 9,
A hot water pipe 2a, a hot water return hose 4b, and a return hot water bypass pipe section 20 are reached, where a part of the hot water is introduced into the hot water recirculation means 9, and the remaining hot water is passed through the hot water outlet 6, the hot water plug 5, and the heat Return to 1.

The operation of the hot water recirculation means 9 is as follows. First, incoming hot water flows into the inflow port 12 and jets out from the nozzle 13 to the outflow port 16. At this time, a negative pressure is generated immediately downstream of the nozzle port 13a due to the ejector effect. Therefore, a part of the return hot water flowing into the return hot water pipe portion 19 from the introduction hole 14 provided in this portion passes through the bypass pipe 10. Then, the returned hot water sucked in and sucked out flows out of the introduction hole 14 immediately downstream of the nozzle port 13a, and is mixed with the outgoing hot water jetted from the nozzle port 13a. Then, the water flows out from the outlet 16 together with the warm water.

Since the return hot water from the hot water carpet 2 is mixed with the outgoing hot water as described above, the temperature of the hot water is 70-75 ° C. at the inlet of the outgoing hose 4a and the hot water pipe 2a of the hot water carpet 2 and about 60 ° C. at the outlet. However, the outgoing hot water of 70 to 75 ° C. which flows into the inlet 12 of the hot water recirculation means 9 is mixed with the returning hot water of about 60 ° C. which flows out of the introduction hole 14 at the nozzle port 13a. The temperature of the outgoing hot water flowing out of the hot water pipe 16 and flowing into the inlet of the hot water pipe 2a was 60 to 65 ° C, and about 55 ° C at the outlet. As described above, the temperature difference between the inlet and the outlet was 10 to 15 ° C, but the temperature difference was reduced to 5 to 10 ° C. In addition, it was possible to set an appropriate temperature. In addition, this temperature is the nozzle part 1
The temperature can be adjusted to an appropriate value by changing the shape of No. 3, the distance between the nozzle port 13a and the introduction hole 14, and the like.

As described above, it is possible to eliminate temperature unevenness inside the hot water carpet and to set an appropriate temperature.
The input hot water temperature can be easily adjusted so that deformation of the floor or the like due to the temperature difference can be prevented. Further, ancillary equipment such as a hot water switching unit can be eliminated.

Embodiment 2 FIG. FIG. 3 is a cross-sectional view of the hot water recirculation means of the hot water heating apparatus according to the second embodiment. The configuration of the hot water heating apparatus is the same as that of the first embodiment shown in FIG. FIG.
In the second embodiment, the same or corresponding portions as those in FIG. 2 of the second embodiment are denoted by the same reference numerals, and description thereof is omitted.

Reference numeral 26 denotes an inlet 12 into which the incoming warm water flows,
A nozzle tube section having a nozzle 25 provided on the outflow side, 2
5a is a nozzle port. Reference numeral 27 denotes an opening along the outer periphery of the nozzle port 25a, and reference numeral 28 denotes an introduction pipe portion provided on the outer periphery of the nozzle tube 26 with an introduction passage 29 for returning to the opening 27 and introducing hot water.

Next, since the operation of the entire hot water heating apparatus is the same as that of the first embodiment, the operation of the hot water recirculation means 9 will be described with reference to FIG. First, the outgoing warm water flows into the inflow port 12 and spouts from the nozzle 25 to the outflow port 16. At this time, a negative pressure is generated immediately downstream of the nozzle port 25a due to an ejector effect. Therefore, the return water flowing into the return hot water pipe portion 19 via the opening 27, the introduction path 29, and the bypass pipe 10 provided in this portion. Part of the hot water is sucked in, and the sucked return hot water flows out of the opening 27 immediately downstream of the nozzle port 25a,
It mixes with the outgoing warm water jetted from the nozzle port 25a.
Then, the water flows out from the outlet 16 together with the warm water.

As described above, in the first embodiment, the return hot water is introduced from the opening 27 provided around the nozzle port 25a as compared with the case where the return hot water is introduced from the introduction port, so that the hot water flows out from the nozzle port 25a. Since it is easy to mix uniformly with hot water and the mixing amount of returned hot water can be increased, it can be used for a hot water carpet having a large heat capacity.

As described above, in the first embodiment, the return hot water is introduced from the opening 27 provided around the nozzle port 25a as compared with the case where the return hot water is introduced from the inlet port. Since it is easy to mix uniformly with the hot water and the mixing amount of the returned hot water can be increased, the temperature can be easily adjusted even with a hot water carpet having a large output.

Embodiment 3 FIG. FIG. 4 is a cross-sectional view of the hot water recirculation means of the hot water heating apparatus according to the third embodiment. The configuration of the hot water heating apparatus is the same as that of the first embodiment shown in FIG. FIG.
In FIG. 7, the same or corresponding parts as those in FIG. 3 of the second embodiment are denoted by the same reference numerals, and description thereof is omitted.

Reference numeral 32 denotes an opening 27 along the outer periphery of the nozzle port 25a, and an introduction passage 29 which returns to the opening 27 and introduces hot water.
Are formed on the outer periphery of the nozzle tube 26, and the introduction / nozzle tube portion is provided with a narrowing portion 30 and a widening portion 31 immediately downstream of the nozzle port 25a.

Next, since the operation of the entire hot water heating apparatus is the same as that of the first embodiment, the operation of the hot water recirculation means 9 will be described with reference to FIG. First, the outgoing warm water flows into the inflow port 12 and spouts from the nozzle 25 to the outflow port 16. At this time, a negative pressure is generated immediately downstream of the nozzle port 25a due to an ejector effect. Therefore, the return water flowing into the return hot water pipe portion 19 via the opening 27, the introduction path 29, and the bypass pipe 10 provided in this portion. Part of the hot water is sucked in, and the sucked return hot water flows out of the opening 27 immediately downstream of the nozzle port 25a,
It mixes with the outgoing warm water jetted from the nozzle port 25a.

Next, the outgoing warm water mixed with the returning warm water is further uniformly mixed by the narrowing portion 30 and the expanding portion 31.
The water flows out from the outlet 16 together with the hot water.

As described above, the returned hot water is supplied to the nozzle port 25a.
Mixed with the outgoing warm water jetted from the
And uniformly mixed with the outgoing warm water, so that the outgoing warm water having a stable temperature can be obtained.

Embodiment 4 FIG. FIG. 5 is a cross-sectional view of the hot water recirculation means of the hot water heating apparatus according to the fourth embodiment, in which the nozzle pipe of FIG. 4 of the third embodiment can be moved. In the figure, the same or corresponding portions as those in FIG. 4 of the third embodiment are denoted by the same reference numerals, and description thereof is omitted. Reference numeral 33 denotes an adjusting screw portion which screwably connects the nozzle tube portion 26 to the introduction / nozzle tube portion 34 so as to be movable.

In this configuration, the distance between the nozzle port 25a and the throttle unit 30 is adjusted to adjust the temperature of the incoming hot water. For example, when raising the temperature of the outgoing hot water, the nozzle pipe 2
6 is moved in the upstream direction of the outgoing hot water to reduce the ejecting effect generated downstream of the nozzle port 25a to reduce the recirculation amount of the returning hot water and to lower the temperature of the outgoing hot water. The nozzle tube 26 to increase the recirculation amount.

As described above, the nozzle tube 26 is moved,
The temperature of the incoming hot water can be changed.

In the above-described embodiment, the case where the hot water recirculation means is applied to the hot water carpet has been described. However, the present invention can be similarly applied to other hot water floor heating devices and the like.

[0035]

As described above, the present invention relates to a hot water boiler for heating a floor by circulating hot water generated by a heat source unit to a hot water pipe of a heating unit. A hot water recirculation means is provided in the hot water circulation going circuit line to connect and recirculates at least a part of the returned hot water from the hot water return circuit to the hot water circulation going circuit. And the like, the input hot water temperature can be easily adjusted so that the heating section can obtain an appropriate heating output, and ancillary equipment such as a hot water switching unit can be eliminated.

The hot water recirculation means includes a nozzle portion provided between an inlet and an outlet through which the incoming hot water flows, an inlet hole provided immediately downstream of the nozzle portion for introducing return hot water, Is provided, it is possible to eliminate temperature unevenness inside the heating unit and to set an appropriate temperature, and it is possible to easily adjust the input hot water temperature without any additional equipment.

The hot water recirculation means includes an inlet into which the incoming hot water flows, a nozzle pipe having a nozzle port provided on the outlet side, an opening along the outer periphery of the nozzle port of the nozzle pipe, The introduction path for returning the hot water to the opening and the introduction pipe portion provided on the outer periphery of the nozzle pipe are provided, so that the return hot water is easily mixed with the hot water going out easily, and the mixing amount of the return hot water is large. Therefore, the input hot water temperature can be easily adjusted even in a hot water heating apparatus having a large output.

Further, the hot water recirculation means includes an inflow port into which the outgoing hot water flows, a nozzle pipe portion having a nozzle port provided on the outflow side, an opening along the outer periphery of the nozzle port of the nozzle pipe section, Since an introduction path for returning hot water to the opening and introducing hot water is formed on the outer periphery of the nozzle pipe, and an inlet / nozzle pipe section provided with a constricted section and a widening section immediately downstream of the nozzle port, the apparatus is stable. It can be used as hot water at an outgoing temperature.

Further, since the nozzle tube is movably attached to the introduction / nozzle tube and the distance between the nozzle port and the throttle is adjusted, the temperature of the incoming hot water can be changed.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a hot water heating apparatus according to a first embodiment of the present invention.

FIG. 2 is a sectional view of a hot water recirculation unit of the hot water heating device according to the first embodiment of the present invention.

FIG. 3 is a sectional view of a hot water recirculation unit of the hot water heating apparatus according to the second embodiment of the present invention.

FIG. 4 is a sectional view of hot water recirculation means of a hot water heating apparatus according to Embodiment 3 of the present invention.

FIG. 5 is a sectional view of hot water recirculation means of a hot water heating apparatus according to Embodiment 4 of the present invention.

FIG. 6 is a configuration diagram of a conventional hot water heating device.

FIG. 7 is a configuration diagram of a conventional hot-water floor heating device.

[Explanation of symbols]

1 heat source unit, 2 hot water carpet, 2a hot water pipe,
9 hot water recirculation means, 10 bypass pipe, 12 inflow port, 13 nozzle section, 13a, 25a nozzle port, 14
Inlet hole, 19 return hot water pipe section, 20 return hot water bypass pipe section, 26 nozzle pipe section, 27 opening, 28 introduction pipe section, 29 introduction path, 30 throttle section, 31 expanding section, 3
2, 34 Introducing / nozzle tube part, 33 adjusting screw part.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tetsuo Murata 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsui Electric Co., Ltd. (72) Hiroaki Uchida 2-3-2 Marunouchi, Chiyoda-ku, Tokyo 3 F term in Ryo Denki Co., Ltd. (reference) 3L070 BC14 BC15 DD02 DE04 DE09 DG07 4F033 AA05 BA04 CA04 DA02 EA01 LA09 NA01

Claims (5)

[Claims] 1. A hot water circulating apparatus for heating a floor by circulating hot water generated by a heat source unit to a hot water pipe of a heating unit, wherein the hot water unit is provided in a hot water circulation going circuit line connecting the heat source unit and the hot water pipe. And a hot water recirculation means for recirculating at least a part of the return hot water from the hot water return circuit to the hot water circulation circuit. 2. A hot water recirculation means includes a nozzle portion provided between an inlet and an outlet through which hot water flows in, an introduction hole provided immediately downstream of the nozzle portion and configured to introduce return hot water, The hot water heating apparatus according to claim 1, further comprising: 3. The hot water recirculation means includes an inflow port into which outgoing hot water flows, a nozzle pipe having a nozzle port provided on an outflow side, an opening along an outer periphery of the nozzle port of the nozzle pipe, The hot water heating apparatus according to claim 1, further comprising: an introduction pipe section provided on an outer periphery of the nozzle pipe with an introduction path for returning hot water to the opening. 4. The hot water recirculation means includes an inflow port through which incoming hot water flows, a nozzle pipe having a nozzle port provided on an outflow side, an opening along an outer periphery of the nozzle port of the nozzle pipe, An introduction path for returning hot water to the opening and introducing the hot water to the outer periphery of the nozzle tube, and an introduction / nozzle tube portion provided with a throttle portion and a widening portion immediately downstream of the nozzle port. The hot water heating apparatus according to claim 1, wherein 5. The hot water heating apparatus according to claim 4, wherein the nozzle pipe is movably attached to the introduction / nozzle pipe, and the distance between the nozzle port and the throttle is adjusted.