RU184497U1 - Gas-fired boiler - Google Patents

Abstract

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 technical result is to increase the efficiency of the utility model. The technical result is achieved by the fact that the gas wall-mounted boiler contains a body hanging on the wall, which has a message with the atmosphere, inside of which there is a sealed combustion chamber with a flue gas collector in communication with the pipe for the removal of combustion products, inside of which there is a gas burner with an ignition device communicated through a gas a valve with a gas supply channel, a heat exchanger of the heating circuit, communicated on one side with the coolant supply channel from the heating system, into which the pump is integrated and flax tank, and on the other hand with the output channel in the coolant heating system. The boiler is equipped with a control device, a heat exchanger of the hot water supply circuit, placed in a separate housing, the cavity of which is on the one hand connected to 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 to the heating system. The heat exchanger of the hot water supply circuit is on the one hand connected to the hot water supply channel, in which the water flow sensor is located, and on the other hand, to 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 the intake air, each of which is equipped with a separate means of its overlapping or opening. The boiler is equipped with a three-way valve with an electric actuator connected to the control unit and configured to switch to the “heating + hot water / hot water only” 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 a separate housing in which the heat exchanger of the hot water supply circuit is located, additionally equipped with an additional housing located around the discharge pipe combustion products and with an intake for air intake. 1 ill.

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.

Known gas wall boiler, containing a wall-mounted housing having a message with the atmosphere, inside of which there is a sealed combustion chamber with a flue gas collector in communication with a pipe for the removal of combustion products, inside which there is a gas burner with an ignition device, communicated through a gas valve with a feed channel gas, the heat exchanger of the heating circuit, connected 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 orons with a channel for transferring the coolant to the heating system, while the boiler is equipped with a control device, a hot water circuit heat exchanger placed 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 parties - with the channel of the outlet of the coolant to the heating system, and the heat exchanger of the hot water supply circuit on one side is in communication with the hot water supply channel, in which the flow sensor is located water, and on the other hand, with a channel for issuing 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 of its overlap or opening, and the boiler 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 function of a bypass valve for communicating the outlet of the coolant to the heating system with a channel for supplying the coolant from the heating system through the cavity of a separate housing in which the heat exchanger of the hot water circuit is located. (RF patent for utility model No. 110460, class. F24H 1/08, publ. 20.11.2011).

A disadvantage of the known utility model is the lowered efficiency due to the fact that a significant part of the heat received during combustion of the gas is removed to the atmosphere. In this case, the pipe for the removal of combustion products is heated. This heat can be used to heat the air supplied to the boiler, thereby increasing its efficiency.

The technical result is to increase the efficiency of the utility model.

The technical result is achieved by the fact that the gas wall-mounted boiler contains a housing hanging on the wall, having a message with the atmosphere, inside of which there is a sealed combustion chamber with a flue gas collector in communication with the pipe for the removal of combustion products, inside which there is a gas burner with an ignition device, communicated through gas valve with a gas supply channel, a heating circuit heat exchanger communicated on one side with a coolant supply channel from the heating system, into which the pump and expansion heating tank, and, on the other hand, with a heat carrier outlet channel to the heating system, the boiler is equipped with a control device, a hot water circuit heat exchanger placed in a separate housing, the cavity of which is connected on one side with the heat carrier supply channel from the heating system to the pump this channel, and on the other hand, with a channel for transferring the coolant to the heating system, and the heat exchanger of the hot water supply circuit is on the one hand connected to the hot water supply channel, in which a water flow sensor is placed, and on the other hand, with a channel for dispensing hot water 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 overlap or opening, and the boiler 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 / only hot water" and with a bypass valve for communicating I channel output of coolant in the heating system with the coolant supply channel of the heating chamber through a separate housing, wherein the heat exchanger is placed DHW is further equipped with additional housing placed around the flue pipe and having an inlet for air intake.

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.

In FIG. 1 is a 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.

In FIG. 1 shows 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

27 Additional housing

28 Entrance to the air leak.

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 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 a utility model, a gas wall-mounted boiler comprises a wall-mounted housing having a communication with the atmosphere. In this case, the housing is equipped with an additional housing 27 located around the pipe for the removal of combustion products and having an input 25 for suction of air from the atmosphere,

This design provides additional heating of the input air, which increases the efficiency of gas combustion.

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, which communicates 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, connected on one side to the coolant supply channel from the heating system (heating input 11), into which the pump 8 is connected 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), a heating temperature sensor 20 and an overheating sensor 24 are placed in this line.

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 secondary heat exchanger 15 of the hot water circuit itself is on the one hand connected to the hot water supply channel, in which the flow sensor 13 of the hot water supply circuit 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 of a three-way valve connected to the control device and configured to switch to the “heating + hot water / hot water only” mode and with a bypass valve function for communicating the heat carrier outlet channel to the heating system with the heat carrier supply channel heating systems through the cavity of a separate housing in which the heat exchanger of the hot water 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 to the flue gas collector, and separate pipes to the heating system, water supply system and natural gas main. Pump 8 is connected to the mains. The coolant is poured into the heating system. On the automatic control panel of the gas burner 5 set the required temperature of the coolant. The three-way switching valve is set to the “heating + hot water supply” mode, the pump is turned on 8. Next, the gas supply is turned on and the ignitor is ignited, the flame from which ignites the burner 5. High-temperature flue gases are formed in the combustion chamber, which transfer heat through the walls and tubes of the primary heat exchanger 4 circuits heating coolant. Further, the cooled flue gases with a temperature of approximately 135 ° C rise into the chimney box, enter the pipe for the 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 air monostat 1 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 heating temperature 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 secondary heat exchanger 15 of the hot water circuit begins to intensively take heat from the coolant. The heating temperature sensor 20 detects a decrease in temperature and gives a command to increase the 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 hot water intake stops, the heating temperature 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 air monostat 1 and it gives the command to turn off the gas burner, etc.

In case of overheating of the coolant, the overheating sensor 24 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 having a communication with the atmosphere, inside of 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 and the expansion tank are integrated, and on the other hand with the channel in heat carrier water into the heating system, while the boiler is equipped with a control device, a hot water circuit heat exchanger located in a separate housing, the cavity of which is on the one hand connected to the coolant supply channel from the heating system to the pump location in this channel, and on the other hand, a channel for transferring 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 on the other torons - with a channel for dispensing hot water 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, and the boiler is equipped with a three-way valve with an electric actuator associated with the device control and executed with the function of switching to the mode "heating + hot water supply / only hot water supply" and with the function of a bypass valve for communicating the channel of output of the coolant to the system captivity channel coolant flow from the heating chamber through a separate housing in which a heat exchanger the hot water circuit, characterized in that the secondary body is equipped placed around the flue pipe and having an inlet for air intake.

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