RU110460U1 - WALL GAS BOILER - Google Patents

Abstract

 A wall gas boiler containing a wall-hung housing with atmospheric communication, inside which there is a sealed combustion chamber with a flue gas collector in communication with a flue gas discharge pipe, inside of which there is a gas burner with an ignition device, communicated through a gas valve with a gas supply channel , the heat exchanger of the heating circuit, communicated on the one hand with the coolant supply channel from the heating system into which the pump is integrated and the expansion tank is communicated, and on the other hand with the output of the coolant to the heating system, the boiler is equipped with a control device, a heat exchanger of the hot water supply circuit, located in a separate housing, the cavity of which is connected on one side with the coolant supply channel from the heating system to the pump location in this channel, and on the other hand with a channel for the outlet of the coolant to the heating system, and the heat exchanger of the hot water supply circuit is connected on one side with the hot water supply channel in which the water flow sensor is located, and with on the other hand, with a channel for dispensing hot water to the consumer, characterized in that the casing in the upper part is made with at least two openings for communication with the atmosphere and air intake, each of which is equipped with a separate means for closing or opening it, and the boiler is equipped with a three-way valve with an electric actuator associated with the control device and made with the function of switching to the mode "heating + hot water / only hot water" and with the function of a bypass valve for communicating the output channel

Description

The utility model relates to the field of industrial and municipal heat power engineering and can be used in boiler designs designed for heating and / or hot water supply.

The closest in combination of essential features and functions performed is a commercially available hot water boiler designed for separate heating and hot water supply of apartments in residential multi-storey buildings and individual residential buildings, with natural and forced water circulation systems. The boiler contains an expansion tank and a sealed housing in which a combustion chamber with a gas burner, a heat exchanger of a heating circuit with a smoke box, a rectangular rectangular buffer tank with a heat exchanger (coil) of a hot water circuit, pipes for supplying air to the furnace to a gas burner and removal of combustion products are placed located in the upper part of the boiler, coolant inlet and outlet pipes and water inlet and outlet, and a control system including a traction rollover sensor and a gas safety unit Orlets (RU No. 88113, F24H 1/08, publ. October 27, 2009). In this boiler, a sealed enclosure eliminates air intake from the internal volume of the room.

The disadvantages of the boiler include increased metal consumption and, as a result, high inertia in the work, which requires the use of expensive sensors and a complex control system. The sealed boiler body provides the possibility of a guaranteed intake of air only from the street (but not from the room) and a guaranteed removal of combustion products to the outside. Nevertheless, it remains possible, due to the reverse draft, to degrade the combustion performance of the gas burner, up to the complete extinguishing of the flame with fresh air or its own combustion products. This mode of operation, with all the positive results of the work, causes periodic fogging of the walls of the heat exchanger and the formation of condensate on the walls of the chimneys.

This utility model is aimed at achieving a technical result, which consists in improving operational and weight characteristics by increasing reliability and easy maintenance.

The specified technical result is achieved by the fact that in a gas wall-mounted boiler containing a housing hanging on the wall, which is in communication with the atmosphere and inside of which there is a sealed combustion chamber with a flue gas collector in communication with a pipe for removing combustion products, inside which there is a gas burner with an ignition device, communicated through a gas valve with a gas supply channel, a heating circuit heat exchanger communicated on one side with a heating medium supply channel from a heating system into which pump and an expansion tank is communicated, and on the other hand, with a channel for transferring the coolant to the heating system, while the boiler is equipped with a control device, a heat exchanger of the hot water supply circuit located in a separate housing, the cavity of which is connected on one side with the supply channel of the coolant from the heating system to the place placing the pump in this channel, and on the other hand, with the channel for transferring the coolant to the heating system, and the heat exchanger of the hot water supply circuit is on the one hand in communication with the hot re-supply, in which the water flow sensor is located, and on the other hand, with the hot water supply channel to the consumer, the housing in the upper part is made with at least two openings for communication with the atmosphere and air intake, each of which is equipped with a separate means of its closure or opening, the boiler is equipped with a three-way valve with an electric actuator connected to the control device and made with the function of switching to the mode “heating + hot water supply / only hot water supply” and with the buy function asnogo valve for communicating coolant channel output to the heating system with the coolant supply channel of the heating chamber through a separate housing, wherein the hot water heat exchanger circuit is placed.

These features are significant and are interconnected with the formation of a stable set of essential features sufficient to obtain the desired technical result.

The utility model is illustrated by a specific example of execution, which, however, is not the only possible one, but clearly demonstrates the possibility of achieving the desired technical result.

Figure 1 - diagram of a wall-mounted boiler.

According to this utility model, the design of a gas wall-mounted boiler of double-circuit coaxial and separate smoke removal is considered.

Figure 1 presents a structural diagram of this boiler. In this diagram, the following items indicate the following elements and components of this boiler:

1. Air monostat (pressure switch, draft sensor)

2. The fan

3. Flue gas collection

4. Primary heat exchanger (Heating)

5. Burner

6. Gas valve

7. Expansion tank

8. The pump

9. Pressure gauge

10. Relief valve / pressure sensor

11. Heating input

12. DHW input

13. Flow sensor DHW

14. Gas inlet

15. Secondary heat exchanger (DHW)

16. Bypass

17. DHW output

18. Heating output

19. Three-way valve

20. Heating temperature sensor

21. Electric three-way valve

22. Flame control electrode

23. Ignition electrode

24. Overheating sensor

25. Entrance to the suction of air from the atmosphere

26. Exit to smoke exhaust.

The gas wall-mounted boiler of double-circuit coaxial and separate smoke removal has the following features:

- the primary copper heat exchanger for heating and the secondary heat exchanger on the hot water supply are made of copper;

- the control panel is placed on the main body along with a pressure gauge;

- The three air intake openings can be blocked in any order.

- the relief valve and the pressure sensor in the heating system are made in one block.

In this case, the housing is made with the possibility of connecting both a coaxial chimney so separate smoke removal and air intake from the atmosphere with the possibility of installing a plug on any of the three holes blocking the air intake. In this boiler, there is no additional bypass line in the heating circuit, and the three-way valve is made with a built-in switch that replaces the bypass heating line.

According to the present utility model, a gas wall-mounted boiler comprises a wall-mounted enclosure in communication with the atmosphere. For this purpose, the housing in the upper part is made with at least two openings for communication with the atmosphere and air intake (key 25), each of which is equipped with a separate means of its overlapping or opening. This tool can be made in the form of a stub.

Inside the housing there is a sealed combustion chamber having a gas burner 5, a flame control electrode 22 and an ignition electrode 23. The ignition device can be of any design. To remove combustion products, a flue gas collector is mounted in the upper part of the housing, in communication with the pipe for the removal of combustion products. A gas burner with an ignition device is communicated through a gas valve 6 with a gas supply channel (gas inlet).

Inside the casing, above the gas burner with the ignition device, a primary heat exchanger 4 of the heating circuit is placed, communicated on one side with the coolant supply channel from the heating system (heating input 14), into which the pump 8 is built and the expansion tank 7 is connected, a pressure gauge is also mounted in this line 9 and a combined by design relief valve / pressure sensor 10.

On the other hand, the primary heat exchanger 4 of the heating circuit is in communication with the channel for outputting the coolant to the heating system (heating output 18), in this line there is a heating temperature sensor 20 and an overheating sensor 24.

The secondary heat exchanger 15 of the hot water supply circuit is placed in a separate housing, the cavity of which is on the one hand connected with the coolant supply channel from the heating system to the pump location in this channel, and on the other hand, with the coolant outlet channel into the heating system.

The heat exchanger 15 of the hot water supply circuit itself is on the one hand connected to the hot water supply channel, in which the water flow sensor 13 is located, and on the other hand, to the hot water supply channel to the consumer.

The boiler is equipped with a three-way valve 19 with an electric actuator 21, connected to the control device and made with the function of switching to the "heating + hot water supply / only hot water supply" mode and with a bypass valve function for communicating the coolant outlet channel to the heating system with the coolant supply channel from the heating system through the cavity of a separate housing in which the heat exchanger of the hot water supply circuit is located.

The control device panel is placed on the main body together with a pressure gauge 9, which provides ease of access to the organs for setting the boiler operating modes.

The boiler is mounted on the wall, connected by a pipe to the duct, if a closed boiler operation scheme is used, and by another pipe 10 to the flue gas collector, and separate pipes to the heating system, water supply system and natural gas main. Pump 6 is connected to the mains. The coolant is poured into the heating system. On the control panel of the automatic control of the gas burner 5 set the required temperature of the coolant. The three-way switching valve is set in the "heating + hot water" mode, turn on the pump 6. Next, turn on the gas supply and ignite the ignition, the flame from which ignites the burner. In the combustion chamber, high-temperature flue gases are formed, which transfer heat through the walls and tubes of the heat exchanger 4 to the heat carrier. Further, the cooled flue gases with a temperature of approximately 135 ° C rise into the chimney box, enter the pipe for removal of combustion products and go outside, while sucking in part of the heated air from the inner cavity of the sealed enclosure. The intake air does not allow the monostat 1 topple the draft to heat up, but at the same time it does not cool the combustion products to a temperature conducive to the formation of condensate. The heated heat carrier passing through the primary heat exchanger enters the heating system, gives off heat and returns to this heat exchanger. As soon as the temperature of the coolant reaches the set level, its temperature sensor 20 gives a command to turn off the burner, while the ignitor continues to burn, consuming a minimum amount of natural gas to maintain its own combustion. As soon as the coolant temperature drops below the set limit, the sensor 20 gives a command to supply gas to the burner. The igniter flame is transmitted to the burner, igniting the natural gas. Thus, the set temperature of the coolant in the heating system is automatically maintained.

When selecting hot water, the heat exchanger 15 of the hot water circuit begins to intensively take heat from the coolant. The sensor 20 detects a decrease in temperature and gives a command to increase gas flow. The heat received will be enough to provide the desired temperature in the heating system and provide the desired temperature of hot water. As soon as the intake of hot water stops, the sensor 20 gives a command to turn off the burner, etc.

In the event of a power outage, the pump 8 stops working, the medium flow sensor gives a command to turn off the gas burner. After a short period of time, the thermocouple of the burner shuts off the igniter. To turn on the boiler, you must repeat the previous operations, starting with turning on the gas supply, etc.

In the event of unforeseen reverse thrust, which is especially relevant when using the open boiler operation scheme, air burns out from the internal cavity of the sealed enclosure without flue gas venting to the outside. Flue gases heat the draft tipping monostat 1 and it gives the command to turn off the gas burner, etc.

In case of overheating of the coolant, the sensor 24 for monitoring its temperature gives a command to turn off the burner. If overheating has occurred due to the failure of the sensor 24, then the lack of feedback also turns off the burner.

In the event of an increase in the coolant pressure in the heating system, a relief valve / pressure sensor 10 is triggered. Excess coolant is automatically drained from the system and the boiler can continue to work.

Claims (1)

A wall gas boiler containing a wall-hung housing with atmospheric communication, inside which there is a sealed combustion chamber with a flue gas collector in communication with a flue gas discharge pipe, inside of which there is a gas burner with an ignition device, communicated through a gas valve with a gas supply channel , the heat exchanger of the heating circuit, communicated on the one hand with the coolant supply channel from the heating system into which the pump is integrated and the expansion tank is communicated, and on the other hand with the output of the coolant to the heating system, the boiler is equipped with a control device, a heat exchanger of the hot water supply circuit, located in a separate housing, the cavity of which is connected on one side with the coolant supply channel from the heating system to the pump location in this channel, and on the other hand with a channel for the outlet of the coolant to the heating system, and the heat exchanger of the hot water supply circuit is connected on one side with the hot water supply channel in which the water flow sensor is located, and with on the other hand, with a channel for dispensing hot water to the consumer, characterized in that the casing in the upper part is made with at least two openings for communication with the atmosphere and air intake, each of which is equipped with a separate means for closing or opening it, and the boiler is equipped with a three-way valve with an electric actuator associated with the control device and made with the function of switching to the mode "heating + hot water / only hot water" and with the function of a bypass valve for communication channel yes the heat carrier to the heating system with the heat carrier supply channel from the heating system through the cavity of a separate housing in which the heat exchanger of the hot water supply circuit is located.