FI89101B - Central heating unit - Google Patents

Description

89101

CENTRAL HEATING UNIT - CENTRAL VÄRMEENHET

The invention relates to a central heating unit according to the preamble of claim 1.

5

The solid fuel central heating units currently in use for detached houses include separate boiler and heat storage. Installations like this need a separate boiler room, which raises the cost of construction.

In addition, the known solutions have a separate space from the central heating unit for the circulating water pump and the necessary valves, which further increases the construction costs.

The object of the present invention is to provide a new type of central heating unit which avoids the adverse effects of the prior art and expands the possibilities of use.

The invention is characterized by what is stated in the characterizing part of claim 1. Particular embodiments of the central heating unit according to the invention are in turn characterized by the solutions according to claims 2-5.

'35'

Numerous advantages are achieved by the invention. The central heating unit according to the invention can be placed as a whole in a living room. This saves construction costs as a separate boiler room is no longer needed. Since -3Γ0: the central heating unit is placed in a uniform insulation, the amount of waste heat is very small. Placing the pump and pipe space inside the thermal insulation of the central heating unit reduces waste heat and facilitates the placement of pipes. Filling the reservation space is easier than before. The solution according to the invention 3'5: also makes it possible that a professional is no longer required for venting the tank formed by the charge space and the expansion space.

2 89101

In the following, the invention will be described with reference to the accompanying drawing, which shows a central heating unit according to the invention in front section.

5 In the exemplary case according to the drawing, the heat source of the heating unit is the firebox 1. An afterburner space 2 is arranged above the firebox, which also acts as a baking oven. The firebox and the afterburner are connected to each other via an opening 19. Below the firebox there is an ash space 7. Between the firebox 1 and the ash space there is a grate 8. In the example case, the charging space 9 and the expansion space 10 are combined into one tank inside which the heating device 1, afterburner 2 and ash space 7 are arranged at least in part. The entire central heating unit 5 is surrounded by thermally insulated walls 26. Inside the thermally insulated walls are arranged pump and piping 11 in which at least a circulating water pump 12 and the necessary valves are connected to connect the central heating unit to the water supply and heating circuit.

‘O

The pump and piping space 11 is preferably located under the boiler. The entire central heating unit thus forms a compact structure that can be placed in the living space. The central heating unit can be coated with a suitable material, ‘5 for example ceramic tiles, thus making its appearance very high quality.

A pipe coil 18 is arranged in the charging space 9 for heating hot water. The water lines 28, 30 are connected to the coil in a manner known per se. An electric heater 17 is also arranged in the charging space 9, which can be used to heat the water in the charging space.

The figure shows the pipes 35 and the filling tank filling equipment required in the central heating unit. The central heating inlet pipe 27 is preferably arranged in the lower part of the charging space 9 and the end 16 of the outlet pipe 15 at a predetermined height 3 in the storage space 9. The outlet pipe 15 and the valve 14 arranged therein are used to detect the surface height of the charging space 9.

5 When filling the charge space, water is led from the hot water line 28 through the shut-off valve 29 to the inlet pipe 27. In this case, the water level in the charge space 9 starts to rise. The water is discharged to the charge state until the water level reaches the upper end 16 of the outlet pipe 15. In this case, water enters the pipe 15, the lower end of which is in the pump space and the piping space 11. The outlet pipe 15 is connected to the heating circuit in a conventional manner. The outlet pipe 15 is provided with a connection with a shut-off valve 14. A safety valve 13 is arranged between the shut-off valve 14 and the pipe 15. The shut-off valve 14 is most preferably located in the pump and piping path 15. The valve 14 is open during the filling phase of the charge space 9. , this is observed as water flowing through the valve 14 into the pump and piping space 11. In this case, the valve 14 is closed. The filling of the storage space is continued until the required pressure of 20 is reached. The pressure can advantageously be, for example, of the order of 1.5 bar. By means of a predetermined height position of the upper end 16 of the tube 15, a so-called the air mattress and the expansion space 10. The height position of the upper end 16 of the tube 15 is set so that the ratio of the charge space 9 to the expansion space 10 is .25. in the tank becomes optimal when filling the tank.

The altitude position can be determined computationally or experimentally. As a result of this arrangement, it is not necessary to arrange a measuring glass or the like outside the central heating unit to observe the water level. A separate 30 gas expansion tank is also not required.

It will be clear to a person skilled in the art that the invention is not limited to the above-mentioned exemplary embodiments, but can be varied within the scope of the appended claims.

Claims (4)

4 89101 A central heating unit comprising a fixed combustion furnace (1) in which fuel is burned, ducts leading from the furnace to the flue, a thermally insulated charging space (9) in connection with which the furnace (1) is arranged so as to be at least partially surrounded by water, and a charging space for connecting the central heating unit LO of the combined outlet pipe (15) and return pipe (27) to the central heating piping, characterized in that a pump and piping space (11) with at least a circulating water pump (12) and the necessary means that the outlet pipe (15) is arranged in the charge space (9) so that the height position of the upper end (16) of the pipe (15) is set so that the ratio of the charge space (9) to the expansion space (10) in the tank is optimal when filling the tank and that the other end of the tube (15) is connected to the circulating water pump (12) in the pump and piping space (11). Central heating unit according to Claim 1, characterized in that one or more valves (13, 14) are arranged in the pipe (15) between the pipe (15) and the circulating water pump (12) in the pump and piping space (11). Central heating unit according to Claim 1 or 2, characterized in that the outlet pipe (15) and the valve (14) arranged therein are used for detecting the level of the charge space (9). Central heating unit according to Claim 2, characterized in that a safety valve (13) is arranged between the shut-off valve (14) and the pipe J5 (15). Il: 5 99101