JP3031451U - Hot water supply device for road heating - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To eliminate the fuel cost for road heating, and to keep the roadbed in a heat storage state while the heater is in operation so that snow can be melted at any time. Compared with the conventional technology, the manufacturing cost of the device can be reduced, and no dedicated boiler installation place is required. A hot water can 2 having height-adjustable legs 1, 1, ... Is a heat exchange chamber 4 communicating with a load heating device via a hot water outlet and a hot water return port 6. . A heat exchanger 10 is provided in the heat exchange chamber 4. At one end of the heat transfer cylinder 11, an exhaust inlet 12 through which the exhaust cylinder 53 of the exhaust pipe heater is inserted is provided outside the hot water can 2, and at the other end, an exhaust outlet 16 is provided. It is provided. The bottom surface 11A of the heat transfer cylinder 11 extends from the exhaust inlet 12 to the exhaust outlet 16
The drain reservoir 13 is formed on the outer periphery of the exhaust gas inlet 12 toward the front.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a hot water supply device for supplying hot water to a hot water circulation type road heating device, and more particularly to a hot water supply device for load heating that effectively utilizes combustion gas discharged from an exhaust pipe heater. Regarding

[0002]

[Prior art]

 Conventionally, as a method of supplying hot water to a hot water circulation type road heating device, a kerosene combustion type, a gas combustion type or an electric heating type boiler is known. The operation of these boilers is generally designed to start combustion in response to a signal from a sensor that detects the snowfall condition, and continue burning for a certain period of time after the snowfall to supply hot water. The running cost is reduced by controlling the operation of the boiler according to the above.

[0003]

[Problems to be solved by the device]

 However, the method of starting and stopping the boiler depending on the snowfall situation is that it takes time to start up because the temperature of the snow-melting road surface will drop to the outside temperature if the boiler is stopped for a long time. There are drawbacks, that there is a drawback that fuel costs are required, and that a boiler installation site is required. Moreover, the running costs of kerosene, gas, electricity, etc. required for road heating in one season from almost December to the end of March are not negligible for general households, so a road heating device is convenient. However, the fact is that we have to hesitate to introduce it, and there is a demand for a hot water supply device for road heating that can be operated at a lower cost.

On the other hand, a kerosene-burning exhaust stack type heater used for heating in general houses and the like has improved performance and can control the combustion state to a minute state. Due to the improved airtightness of the structure, the heater is continuously burned for 24 hours to be used, but the combustion gas of the heater that operates day and night is not reused and is exhausted to the outside through the exhaust stack. The current situation is that they are being emitted, and there is a problem in terms of effective use of energy.

The present invention has been made as a result of intensive research conducted by the present inventor in view of the above-mentioned drawbacks and problems of the prior art. The present invention is also achieved by a heat medium heated by the combustion gas discharged from the exhaust pipe heater. We have verified that the road heating device can melt snow, can save fuel cost for load heating, can melt snow for 24 hours at any time while the heater is running, and It provides a hot water supply device for load heating, which can significantly reduce the manufacturing cost compared with the conventional technology and does not require an installation site because a dedicated boiler is not used.

[0006]

[Means for Solving the Problems]

 The means of the present invention configured to solve the above-mentioned problems is a hot water supply device for load heating which is used by connecting to an exhaust pipe of an exhaust pipe heater, and has a leg portion and a load heater. The heating device comprises a hot water can in which an internal heat exchange chamber communicates with the heating device via a hot water outlet and a hot water return port, and a tubular heat exchanger provided in the heat exchange chamber of the hot water can. An exhaust gas inlet opening to the outside of the hot water can and communicating with the exhaust pipe is provided at one end side, an exhaust gas outlet opening to the outside of the hot water can is provided at the other end side, and the bottom surface side is the exhaust gas flow. It consists of a slope that rises from the inlet side toward the exhaust outlet side.

[0007] The heat efficiency can be improved by providing the heat exchanger with a configuration in which a plurality of heat transfer tubes having open ends are inserted in the heat exchange chamber of the hot water can.

Further, in the heat exchanger, an outer cylinder in which the exhaust inlet is continuously provided between a bottom portion of the heat exchanger and the hot water can, and an inner cylinder provided in the outer cylinder and connected to the exhaust cylinder The fitting cylinder is formed to form a ring-shaped condensation water pool between the outer cylinder and the fitting cylinder, covers the fitting cylinder above, and guides the drain into the condensation water pool. The drain guide plate is installed, and a drain discharge pipe that communicates with the dew condensation water reservoir and opens to the outside of the hot water can is provided to ensure that the drain drips into the heater. Can be prevented.

Further, by configuring the hot water can to be used by mounting it on the exhaust pipe heater, the heating medium can be directly heated by not only the exhaust gas but also the heater, thereby improving the thermal efficiency. be able to.

[0010]

[Embodiment of device]

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the figure, 1, 1, ... Are four legs, and each leg 1 has an adjusting piece 1A screwed to the lower end thereof so that the height can be adjusted. Reference numeral 2 denotes a hot water can supported on the upper ends of the four legs 1, 1, ... 3 is a rectangular tubular can body that constitutes the hot water can 2. The can body 3 includes a bottom plate 3A, a top plate 3B, a front plate 3C, a rear plate 3D, side plates 3E and 3E, and corners of the bottom plate 3A. The inside of the heat exchange chamber 4 is formed by the four leg mounting pieces 3F, 3F, ... . Further, the bottom plate 3A is formed with a fitting plate portion 3G having a substantially rectangular shape in a plane, which fits into a recess 52B on the upper surface side of the exhaust pipe heater 51, which will be described later. An exhaust pipe communication port 3H is formed in the bottom plate 3A at a side of 3G. Further, the upper plate 3B is formed with an insertion port 3J into which an exhaust outlet 16 of the heat exchanger 10 described later is inserted.

Reference numeral 5 is a hot water outlet pipe communicating with the heat exchange chamber 4 and protruding from the upper side of the rear plate 3D, and 6 is communicating with the heat exchange chamber 4 protruding from the lower side of the rear plate 3D. A hot water return pipe 6 is shown. The hot water return pipe 6 extends to the center of the heat exchange chamber 4, and its front end side 6A is bent in a substantially L shape and opens upward. The hot water outlet pipe 5 and the hot water return pipe 6 are connected to a connecting pipe 63 of a load heating device 61 described later. Reference numeral 7 denotes a hot water inlet for filling the heat exchange chamber 4 with a heat medium. The hot water inlet 7 is formed in the upper plate 3B and can be covered by a lid 8. Reference numeral 9 denotes a hot water discharge pipe for discharging the heat medium in the heat exchange chamber 4, and the hot water discharge pipe 7 is provided on the rear plate 3D at the side of the hot water return pipe 6 and is normally provided with a plug body. It is closed.

Next, 10 shows a heat exchanger arranged in the heat exchange chamber 4. Reference numeral 11 denotes a heat transfer tube which constitutes the heat exchanger 10. The heat transfer tube 11 is composed of a bottom plate 11A made of a stainless steel plate, an upper plate 11B, a pair of side plates 11C and 11C, and end plates 11D and 11D. Is formed into a closed rectangular tube shape, the bottom plate 11A has a combustion gas inflow hole 11E formed at one end side in the longitudinal direction, and the combustion gas outflow hole 11F is formed at the other end side of the upper plate 11B. Is formed. Then, the bottom plate 11A is set to be inclined upward from one end side in the longitudinal direction toward the other end side so that the drain flows down, and one end side thereof is connected to a drain reservoir 13 described later.

Reference numeral 12 denotes an exhaust gas inlet port formed between the bottom plates 11A and 3A in communication with a combustion gas inflow hole 11E of the bottom plate 11A and an exhaust cylinder communication port 3H opening in the bottom plate 3A of the hot water can 2. The inlet 12 is formed by an outer cylinder 12A and an exhaust cylinder fitting port 12C inserted in a state where the collar 12B is continuously provided on the inner peripheral surface of the outer cylinder 12A. An annular drain reservoir 13 is formed between the cylinder 12A and the cylinder 12A. A drain discharge pipe 14 communicating with the drain reservoir 13 is projected outside the hot water can 2. Reference numeral 15 is a drain guide plate attached to the upper plate 11B of the heat transfer cylinder 11 via the mounting bracket 15A, which has a size to entirely cover the exhaust pipe fitting opening 12C. This is to prevent the drain inside the heat cylinder 11 from dripping inside the exhaust cylinder 53 of the heater 51.

On the other hand, reference numeral 16 denotes an exhaust flow outlet formed of a cylindrical body which is communicated with a combustion gas outflow hole 11F formed in the upper plate 11B of the heat transfer cylinder 11 and projects upward from the heat transfer cylinder 11. The outlet 16 projects outward from the insertion port 3J of the hot water can 2 and is connected to an external exhaust pipe (not shown). Reference numerals 17, 17, ... Denote six heat transfer tubes that are inserted between the bottom plate 11A and the upper plate 11B of the heat transfer cylinder 11 in order to increase the heat transfer area with the heat medium. Both ends of the heat pipe 17 are open to the heat exchange chamber 4 so that the heat medium flows. Reference numeral 18 in the figure denotes a water level gauge attached to one side plate 3E of the hot water can 2.

The hot water supply device for load heating according to the present embodiment has the above-mentioned configuration, and uses the exhaust pipe heater 51 and the load heating device 61 shown in FIG. 5 in combination. The exhaust tube type heater 51 is of a type used for heating with kerosene in general homes and offices, and has a main body 52 of a heater having a top plate 52A formed with a substantially rectangular concave portion 52B. The top plate 52A is provided so as to project, and is roughly configured by an exhaust pipe 53 for discharging the combustion gas to the outside.

Further, the load heating device 61 connects the heat radiation pipe 62 laid in a meandering shape in the snow melting roadbed, and the heat radiation pipe 62 and the hot water outlet pipe 5 and the hot water return pipe 6 of the hot water can 2. The connecting pipes 63, 63 and a hot water circulating pump 64 provided in the middle of the connecting pipe 63 are generally configured.

Next, the operation of this embodiment will be described. First, at the time of installation, the exhaust pipe 53 and the exhaust pipe fitting opening 12C of the hot water can 2 are inserted and fitted, and the fitting tray 3G is fitted in the recess 52B. Then, the height of each leg 1 is adjusted so as not to apply excessive weight to the exhaust pipe heater 51, and the hot water can 2 is mounted on the exhaust pipe heater 51. Thus, by mounting the hot water can 2 on the heater 51, the hot water can 2 can be directly heated by the heater 51.

Now, when the heater 51 is operated, the combustion gas discharged from the exhaust pipe 53 flows into the heat exchanger 10 through the exhaust inlet 12 to heat the heat transfer pipe 11 and the heat transfer pipe 17, and the hot water can The heat medium in 2 is heated. The heat medium is supplied from the hot water circulation pipe 64 to the heat radiating pipe 62 side from the hot water outlet pipe 5 through the connecting pipe 63, and returns to the hot water return pipe 6 to circulate the heat medium. During the combustion operation of the heater 51, the hot water circulation pump 64 is driven to heat the snow melting roadbed to keep the snowmelt roadbed in a heat storage state, so that snow can be quickly melted even in the early stage of snowfall. It is possible to achieve the snow melting effect without raising the temperature of the heat medium.

In the present embodiment, the heat transfer tube 11 of the heat exchanger 10 is provided with a plurality of heat transfer tubes 17 to increase the contact area with the heat medium, so that the heat efficiency is excellent. Even when the heater 51 is in a minute combustion state at night, the heat medium can be heated to a temperature at which it can be used for snow melting.

Further, since the combustion gas flowing into the heat exchanger 10 is cooled by the heat medium, a drain is generated in the heat transfer cylinder 11. However, in the present embodiment, the bottom plate 11A is inclined. Since the drain guide plate 15 covers the upper part of the exhaust pipe fitting port 12C, most of the drain generated in the heat transfer cylinder 11 is stored in the drain storage part 13. Can be collected. As a result, it is possible to reliably prevent the situation in which the drain drops into the exhaust pipe 53 of the heater 51 and causes the heater 51 to have poor combustion.

In the present embodiment, the kerosene combustion type heater 51 is taken as an example of the exhaust pipe type heater used in combination, but it can also be used for the coal combustion type exhaust pipe type heater. .

[0022]

[Effect of device]

 Since the present invention is configured as described above in detail, it has the following effects. (1) Since the hot water supply device for road heating according to the present invention is used only for heating and reuses the exhaust gas of the exhaust pipe heater, the fuel cost for snow melting can be eliminated. However, as long as the heater is operating, the heat medium can be supplied at any time for 24 hours to melt the snow.

(2) Since the boiler for load heating can be eliminated, it is not necessary to secure the installation place, and the manufacturing cost can be reduced as compared with the boiler for load heating.

(3) Since the heat exchanger is provided with the heat transfer tube communicating with the heat exchange chamber, the heat efficiency for heating the heat medium is excellent.

(4) The heat exchanger is configured so that the drain is collected in the drain reservoir by inclining the bottom surface, and the drain guide plate prevents the drain from dripping into the exhaust pipe heater. It is possible to prevent the combustion failure of the stack type heater due to the above.

(5) The heating efficiency of the heating medium can be increased by mounting the hot water can on the heater to directly heat the hot water can.

[Brief description of drawings]

FIG. 1 is an external perspective view of a hot water supply device for road heating according to an embodiment of the present invention.

FIG. 2 is a plan view showing the internal structure of a hot water can.

FIG. 3 is a sectional view taken along the line III-III in FIG.

4 is an enlarged cross-sectional view taken along the line IV-IV in FIG.

FIG. 5 is an explanatory diagram showing a connection configuration of a hot water supply device for load heating and a load heating device.

[Explanation of symbols]

 1 Leg 2 Hot Water Can 4 Heat Exchange Chamber 5 Hot Water Outlet Pipe 6 Hot Water Return Pipe 10 Heat Exchanger 11A Bottom Plate 12 Exhaust Inlet 13 Drain Reservoir 14 Drain Discharge Pipe 15 Drain Guide Plate 16 Exhaust Outlet 17 Heat Transfer Tube 51 Exhaust Tube Type Heater 61 Road heating device

Claims (4)

[Scope of utility model registration request] 1. A hot water supply device for load heating, which is used by connecting to an exhaust pipe of an exhaust pipe heater, has leg portions, and is provided to the load heating device via a hot water outlet and a hot water return port. It comprises a hot water can communicating with an internal heat exchange chamber and a tubular heat exchanger provided in the heat exchange chamber of the hot water can, the heat exchanger opening to the outside of the hot water can and opening the exhaust pipe. It has an exhaust inlet communicating with the one end side and an exhaust outlet opening to the outside of the hot water can on the other end side, and the bottom side slopes upward from the exhaust inlet side toward the exhaust outlet side. A hot water supply device for road heating that is formed and configured. 2. The hot water supply for load heating according to claim 1, wherein the heat exchanger is provided with a plurality of heat transfer tubes whose both ends are opened in a heat exchange chamber of the hot water can. apparatus. 3. An outer cylinder having the exhaust inlet connected to the bottom of the heat exchanger and the hot water can in the heat exchanger, and an inner cylinder provided in the outer cylinder and connected to the exhaust cylinder. A fitting cylinder is formed to form an annular condensed water pool between the outer cylinder and the fitting cylinder, and covers the upper side of the fitting cylinder to guide the drain into the condensation water pool. 3. A hot water for load heating according to claim 1 or 2, further comprising: a drain guide plate, and a drain discharge pipe communicating with the dew condensation water reservoir and opening to the outside of the hot water can. Supply device. 4. The hot water supply device for load heating according to claim 1, wherein the hot water can is configured to be used by being mounted on the exhaust pipe heater.