JPH10288396A - Heat source machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively bleed air in a water chamber and easily and assuredly inject an antifreeze solution in a heat source machine. SOLUTION: A heat source machine comprises a burner 9, a water chamber 18 for storing a heating medium, a can member 6 for heating the heating medium of the water chamber 18 by the burner 9, a circulating pump 8 for circulating the heating medium of the water chamber 18 to a radiator and a reserve tank 12 for supplying the heating medium through a pressure cap 24. A pressure cap piping 21 having the pressure cap 24 at its end part is connected to the upper part of the can member 6 corresponding to the top part of the water chamber 18. A forward piping 20 connected to the circulating pump 8 is connected to the upper part of the can member 6 below the connecting part of the pressure cap piping 21, so that the steam of the circulating heating medium is separated from water in the top part of the water chamber 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat source device for circulating and supplying a heated heat medium to a radiator such as a floor heating panel and a fan convector.

[0002]

2. Description of the Related Art Conventionally, as a heat source device of this type, for example, Japanese Patent Application No. 5-190539, a liquid chamber for storing a heat medium is formed between an inner shell and an outer shell. A can body with a combustion chamber formed, a burner facing the combustion chamber of this can body, a circulation pump that circulates the heat medium in the liquid chamber to the radiator, and a reserve tank for replenishing the heat medium In the case accommodated in the case, an intermediate part of a circulation pipe connecting the outlet of the liquid chamber and the inlet of the circulation pump extends above the liquid chamber of the can body, A pressure regulating valve connected to the separation unit by piping, and an air vent valve provided in a pipe between the gas-liquid separation unit and the pressure regulating valve,
In addition, a pressure regulating valve and an air vent valve connected to a reserve tank are disclosed.

[0003]

However, as described above, a gas-liquid separator is provided in the middle of a circulating pipe connecting the outlet of the liquid chamber and the inlet of the circulating pump, and the gas-liquid separator is provided in this pipe. In the case of a structure for performing separation, the surface area of the steam-water separation portion cannot be increased, so that air is not easily removed, and the structure is complicated and costly.

When replenishing antifreeze from a pressure regulating valve (pressure cap), particularly in a closed system, only the pressure regulating valve is open to the atmosphere, so that the injected antifreeze is injected together with the air in the can body. Pushing back to the entrance, the overflowing antifreeze may contaminate the surrounding top plate, so replenishment of the antifreeze was very troublesome.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned inconveniences, and is a heat source device capable of improving air bleeding in a can body and easily and reliably injecting an antifreeze solution. It is intended to provide.

[0006]

That is, according to the present invention, there is provided a burner, a water chamber for storing a heat medium, and a can body for heating the heat medium in the water chamber by the burner. In a heat source device including a circulation pump that circulates the heat medium in the water chamber to a radiator, and a reserve tank for replenishing the heat medium via a pressure cap, a can body corresponding to the top of the water chamber is provided. A pressure cap pipe provided with the pressure cap at the distal end is connected to the upper part, and an outgoing pipe connected to the circulation pump is connected to the upper part of the can body and below the connection part of the pressure cap pipe. It is characterized by having been done.

Further, according to the present invention, an air vent valve communicating with the water chamber is provided above the can body corresponding to the top of the water chamber, and the air vent valve is connected to the reserve tank. It is characterized by being connected by piping.

Further, the present invention according to claim 3 is characterized in that an opening / closing valve device for injecting antifreeze, which also serves as drainage, is provided at a lower portion of the can body corresponding to the bottom of the water chamber.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is an external view of a heat source unit according to the present invention, and FIG.
FIG. 3 is a structural view of the internal structure, and FIG.

FIG. 1 shows a detachable front panel 5.
A vertically long box-shaped outer case 1 composed of a side panel 3, a top plate 4 at the top of the fuselage, and a gantry 2 at the bottom of the fuselage;
This is a heat source unit of an outdoor installation type in which an exhaust top 19A and a pressure cap cover 26 are protruded from the top plate 4 of the outer case 1.

Next, the internal structure of the heat source unit will be described with reference to FIGS. 2 and 3. Reference numeral 1 denotes the outer case, and one side of the outer case 1 has a stainless steel can. Body 6, a muffler 7 connected to an upper part of the can body 6, a circulation pump 8 installed at a lower part of the can body 6, and the like. A burner 9 such as a petroleum vaporizing burner for heating 6, a fuel pump 10 for supplying fuel to the burner 9, an oil leveler 11, a reserve tank 12 open to the atmosphere, and the like are accommodated.

Reference numeral 13 denotes a support mounted on the pedestal 2. The can 6 is placed and fixed on the upper surface of the support 13 in an upright state. Is housed.

As shown in FIG. 3, the can body 6 has a vertically long cylindrical shape, and has an inner body 14, an outer body 15, and a plurality of smoke tubes 1.
A combustion chamber 17 through which the combustion gas of the burner 9 flows is formed inside the inner shell 14, and water and an antifreeze liquid as a heat medium are interposed between the inner shell 14 and the outer shell 15. There is formed a water chamber 18 for storing circulating water such as ethylene glycol used as the water. Further, the plurality of smoke pipes 16, 16 are provided in the water chamber 1 above the top of the inner body 14.
8, and is connected to the muffler 7 communicating with the exhaust port 19.

The high-temperature combustion gas generated by the combustion operation of the burner 9 is supplied to the combustion chamber 17 and the plurality of smoke tubes 16 and 1.
When passing through 6, the heat exchanges with the circulating water in the water chamber 18, and the exhaust gas enters the exhaust top 19A from the exhaust port 19 through the muffler 7 and is discharged to the outside.

Reference numeral 20 denotes a metallic outgoing pipe connected to the upper part of the can body 6. The other end of the outgoing pipe 20 is connected to the inlet side of the circulating pump 8 via a flexible hose 23. I have.

A pressure cap pipe 21 is connected via an outlet 22 to an uppermost part of the can body 6 corresponding to a top of the water pipe 18 so as to correspond to a top of the water chamber 18. A pressure cap 24 connected to the reserve tank 12 via a flexible thin pipe 25 is attached to the upper end of the pressure cap pipe 21. The pressure cap 24 is covered with a pressure cap cover 26 and is fixed to the top plate 4 so as to protrude therefrom.

The pressure cap 24 is provided with two valves (not shown) having different outflow and inflow directions. The circulating water expands due to the combustion operation, and the pressure in the water chamber 18 and the outgoing pipe 20 increases. When this happens, the outflow valve operates to discharge the circulating water in the outgoing pipe 20 to the reserve tank 12 through the small pipe 25, and when the pressure in the water chamber 18 and the outgoing pipe 20 decreases, The inflow valve is operated to supply the make-up water in the reserve tank 12 into the water chamber 18 through the thin pipe 25, so that the water pressure of the can 6 is adjusted to be constant.

As described above, in the configuration according to the first embodiment, the outgoing pipe 20 and the pressure cap pipe 21 are separately provided, and the water / water separation is performed at the top of the water chamber 18 of the can 6. It is possible to separate water and air in a larger area than in the conventional type in which steam and water are separated in a pipe, and a height drop is formed at the mounting position of the pressure cap pipe 21 and the outgoing pipe 20. With the provision, the escape of air at the time of steam-water separation is improved.

The air vent valve 2 communicating with the water chamber 18 is located at the top of the can body 6, that is, at a position substantially at the same height as the connecting portion of the pressure cap pipe 21.
9 is attached.

The air vent valve 29 has a valve body 30 whose valve opening can be manually adjusted, and its outlet is connected to the reserve tank 12 via a flexible thin pipe 31. . The air vent valve 29 is for releasing high-pressure air accumulated in the gas-liquid separation portion, that is, the upper portion of the water chamber 18 by combustion operation to the outside.
The high-pressure air therein and the circulating water overflowed from the water chamber 18 are discharged into the reserve tank 12 through the thin pipe 31.

As described above, in the configuration according to the second embodiment, by providing the air vent valve 29 at the top of the can body 6, it is possible to provide an air opening portion other than the injection port of the pressure cap 24. The return of the air from the inlet is eliminated, and the injection and replenishment of the antifreeze from the pressure cap 24 becomes easy. Further, the air vent valve 29 can also serve as an air vent at the time of a closed system.

By the way, at the lowermost part of the can 6 corresponding to the bottom of the water chamber 18, an on-off valve device 31 communicating with the water chamber 18 is provided.
Is attached. The on-off valve device 31 serves both as a drain for draining all the water in the water chamber 18 and an inlet for injecting antifreeze, and shows a third embodiment of the present invention. is there.

According to the above configuration, the water in the water chamber 18 can be entirely drained by manually operating the valve body 32 to open the on-off valve device 31.
As shown by a dashed line in FIG. 3, a flexible thin water supply hose 34 is connected to a drain port 33 of the opening valve device 31, and for example, an electric pump 35 or the like is used to open the container 36 from the opening / closing valve device 31. Can be injected into the water chamber 18.

Further, structurally, the opening / closing valve device 31 is housed in the outer case 1 and does not protrude outside the equipment, so that it does not hinder the construction.

Reference numeral 27 denotes a circulation pipe connected to the outlet side of the circulation pump 8. The circulation pipe 27 penetrates the outer case 1 and is connected to an external radiator such as a floor heating panel or a fan convector (not shown). The return pipe from the external radiator is connected to a return port 28 provided below the water chamber 18 of the can 6.

Therefore, in the above configuration, when the operation of the heat source unit is started, the burner 9 burns and the can 6 is heated,
The heat-exchanged warm water in the water chamber 18 is drawn by the circulation pump 8 through the going pipe 20 by the driving of the circulation pump 8, further flows into the external radiator from the circulation pump 8 via the circulation pipe 27, and is radiated by the external radiator. , Is returned to the water chamber 18 from the return port 28 through the return pipe. The heating operation is performed by repeating the circulation of the heat medium in this manner.

[0028]

As described above, according to the first aspect of the present invention, the upper part of the can body corresponding to the top of the water chamber is provided with:
Along with connecting the pressure cap piping provided at the tip with the pressure cap, at the top of the can body,
A conventional type in which steam and water are separated in a pipe by connecting an outgoing pipe connected to the circulating pump at a position below a connection portion of a pressure cap pipe and using a top of a water chamber as a steam-water separation unit. As compared to, the gas can be separated in a larger area, so the escape of air is improved and the air in the heat medium can be reliably released to the atmosphere,
The problem caused by air bite is eliminated.

Further, according to the present invention described in claim 2,
By providing an air vent valve in the upper part of the can body, an air release portion is provided in addition to the pressure cap, so that the return of air from the pressure cap is eliminated and the replenishment of the antifreeze is facilitated. In addition, the use of this air release valve facilitates the operation of air release during construction.

According to the third aspect of the present invention, by providing an opening / closing valve device for draining and injecting antifreeze at the lower portion of the can, not only the drain of the can but also the equipment is provided. Injection of antifreeze, which is performed at the time of construction, can be performed easily and reliably.

[Brief description of the drawings]

FIG. 1 is an external view of a heat source device according to the present invention.

FIG. 2 is an internal structural view of the heat source unit.

FIG. 3 is a structural view of a can body portion of the heat source device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer case 6 Can body 8 Circulation pump 9 Burner 12 Reserve tank 17 Combustion chamber 18 Water chamber 20 Outgoing piping 21 Pressure cap piping 24 Pressure cap 29 Air vent valve 31 Opening / closing valve device

Claims (3)

[Claims] A burner, a water chamber for storing a heat medium, a can body for heating the heat medium in the water chamber by a burner, a circulation pump for circulating the heat medium in the water chamber to a radiator, In a heat source device including a reserve tank for replenishing a heat medium via a pressure cap, a pressure cap pipe provided with the pressure cap at a tip portion on an upper portion of a can body corresponding to the top of the water chamber. A heat source device, wherein a heat pipe connected to the circulation pump is connected at an upper portion of the can body and below a connection portion of the pressure cap pipe. 2. An air vent valve communicating with the water chamber is provided on an upper portion of the can body corresponding to the top of the water chamber, and the air vent valve is connected to the reserve tank by piping. The heat source device according to claim 1. 3. The heat source according to claim 1, wherein an opening / closing valve device for injecting antifreeze is provided at a lower portion of the can body corresponding to a bottom portion of the water chamber, the valve also serving as a drain drainer. Machine.