The present invention relates to a combi boiler with heat exchanger in gas heating systems.

Prior Art

In the prior art, combi boilers are devices having closed combustion chamber. Said devices take the required air from the outside and discharge burnt gases to the outside. Thanks to this property, problems regarding the mounting area and ventilation do not exist. The gas taken into the device by means of a gas valve is directed to the atmospheric burner. The gas in the burner and the air taken into the device by means of a fan are mixed and reach the combustion chamber and are burnt therein. The released heat energy is transferred into water by means of a tubular heating coil disposed right on the combustion chamber and converted into useful energy. The combustion products are collected from the hood on the coil and discharged through a flue. They are sent to the installation by means of a pump disposed in the device whose temperature of which is escalated and which is used for water heating. In the combi boilers manufactured in the prior art, a combustion chamber is provided. The combustion chamber comprises a lower part, the section for generating heat, and heating coils thereon. Although side walls of the combustion chamber are surrounded by heat insulation material, the generated heat cannot be utilized efficiently.

Combi boilers used in the market having coil with horizontal fitting; circular coil; circular coil with outer wall; and block aluminum body with wall only are manufactured. Brief Description of the Invention

In the present invention, metal plate is shaped using the form mold thereon by means of a press. These shapes provide the water and heat generated in the combustion chamber to be directed. Thanks to the directions, transferring the heat into water is performed more efficiently. The pressure applied on the metal plate expands the surface area and provides obtaining more surface in a confined area. The product obtained as a result of these processes is called heat exchanger.

The combi boiler with heat exchanger of the present invention is mounted by two methods including O-ring and seam-welding. 1. The heat exchangers are interconnected by means of O-ring gasket. 2. Two heat exchanger segments are welded from outer edges and combustion chamber edges, thereby forming a single water wall. O-ring gasket is put between each water wall segment and the number of segments is increased . Thus, combi boiler water walls and heat walls integrating with combustion chamber are formed at desired values.

Heat resistant O-rings provide water and gas tightness. On the other hand, water tightness is provided by seam-welding . O-ring is used for gas tightness in both methods. The heat exchanger plates are interconnected, thereby forming a water wall on one surface of the plates and heat wall on the other surface. Bruner combustion chamber is formed after interconnecting the heat exchanger plates. The interconnection process is performed in such manner that heat exchanger plates placed between the heat exchanger rear integral cover and heat exchanger front integral cover are tightened with ball screw.

Combi boiler with heat exchanger is formed by connecting the heat exchangers. As the heat exchanger system is advanced and heat exchanger is extended, the calorific value is increased. Gas is formed by means of the combustion chamber in the middle of the heat exchanger. Thanks to the pressure applied to the heat exchanger, surfaces directing the heat and water are formed. Walls are formed after the connection of the heat exchangers. Said walls consist of heat walls with one surface integrating with water and the other surface integrating with combustion chamber. Heat resistant O-rings which provide tightness of said water and heat walls are used .

In the present invention, the combustion chamber is surrounded by plate heat exchangers. In this manner, the loss of heat is minimized and efficiency is increased . Therefore, fuel is saved and carbon dioxide emission to nature is reduced .

To increase the calorific value in the present invention, the number of the heat exchanger segments or the size of the surface can be increased.

Thanks to the special form of the plate heat exchangers in the present invention, large heat surface can be formed in a confined area and thus heat can be utilized more efficiently.

Since the plate heat exchangers are interconnected by means of a ball screw in the present invention, the gas soot or calcification likely to occur can be cleaned more easily.

In the present invention, the interconnection of heat exchanger plates can be performed by seam-welding or the mounting thereof to each other can be performed by putting heat resistant O-ring gaskets therebetween using ball screw optionally.

Labor and mounting is easier as the heat exchangers are in the form of plates in the present invention. The heating boilers used for heating the large areas have been mounted under the building due to the size thereof during construction and in areas where the boiler will be installed subsequently some walls have been demolished in order to lower the boiler. The present invention eliminates the preceding problem thanks to the ease of on-site mounting as the heat exchangers are in the form of plates.

The heat exchanger segments are interconnected and tightened by means of the heat exchanger front and rear integral covers in the present invention. In this manner, the main body of the combi boiler is integrated and gas and water tightness is provided.

Meaning of the Figures

Figure 1 : Exploded rear view of the combi boiler with plate heat exchanger

Figure 2: Exploded front view of the combi boiler with plate heat exchanger

Figure 3 : Perspective and side view of the combi boiler with heat exchanger

Figure 4: View of the plate heat exchanger

Figure 5 : Frontal and cross sectional view of the combi boiler with heat exchanger

Figure 6: Side cross sectional view of the combi boiler with heat exchanger

Reference Numbers

1. Heat exchanger rear integral cover

2. Connection hole of the plate heat exchangers

3. Plate heat exchanger

4. O-ring Gasket

5. Burner

6. Heat exchanger front integral cover

7. Condensate outlet hole 8. Flue outlet duct

9. Water channels

10. Heat channels

11. Hot water outlet

12. Hood flue outlet

13. Hood

14. Cold water return section

15. Combustion chamber Detailed Description of the Invention

The plate heat exchangers (3) formed in different shapes are interconnected and tightened by means of the heat exchanger front integral cover (6) and heat exchanger rear integral cover (1), thereby main body of the combi boiler is integrated.

The heat generated by burning of the gas reaching the combustion chamber (15) from the burner (5) heats the water inside the water channels (9) while traveling through the heat channels (10) on the plate heat exchanger (3) to the flue outlet duct (8). The heated water is supplied to the water mains.

The fluid generated as a result of burning of the gas in the combustion chamber (15) is discharged through the condensate outlet hole (7).

The gas generated as a result of burning is collected from the hood (13) on the flue outlet duct (8) on heat exchanger and discharged through the flue outlet (12).