CN220958945U - Gas hanging stove with air current monitoring protect function - Google Patents

Abstract

The application relates to a gas wall-mounted furnace with an air flow monitoring and protecting function, which comprises a shell, a combustion device, an air inlet device, an air exhaust device, an air flow monitoring device and a controller. When gas enters the combustion chamber from the air inlet pipe through the action of the fan, the gas is supplied to the wind pressure sensor through a venturi tube communicated with the wind pressure sensor, the wind pressure sensor transmits an electric signal to the controller, the controller controls the gas valve to open for supplying gas to the combustion chamber, the burner fires and discharges combustion gas, cold water is heated through the main heat exchanger, and the combusted waste gas is discharged through an exhaust pipe communicated with the smoke cap. According to the application, the fan is used for directly providing air for the combustion chamber, so that the condition that the gas wall-mounted furnace stops running due to small negative pressure difference at the fan when exhaust gas is discharged by the fan is avoided, and normal use is ensured.

Description

Gas hanging stove with air current monitoring protect function

Technical Field

The application relates to the field of gas wall-mounted furnaces, in particular to a gas wall-mounted furnace with an airflow monitoring and protecting function.

Background

The gas wall-mounted boiler has a strong household central heating function as household common heating equipment, can meet the heating requirements of multiple rooms, can set comfortable temperature at will according to the requirements, can also determine that a certain room is closed independently according to the requirements, can provide large-flow constant-temperature sanitary hot water, and is used in places such as household bath, kitchen and the like.

The principle of the gas wall-mounted furnace used at present is that an air inlet pipe and an air outlet pipe are coaxially arranged, when an ignition switch of the wall-mounted furnace enters a working state, a fan starts to exhaust firstly, negative pressure difference is formed in a combustion chamber, the air inlet pipe is used for air inlet, an air pressure switch sends an instruction to a water pump, after the water pump is started, a water flow switch sends the instruction to a high-voltage discharger, after the high-voltage discharger is started, the instruction is sent to a gas valve, and the gas valve starts to be started. The gas valve, the wind pressure switch and the smoke induction switch are controlled in a linkage way, the combustion chamber can work only after a certain negative pressure gas valve is arranged, and when the smoke induction switch cannot detect that waste gas is discharged in 5 seconds, the gas valve is cut off to stop gas supply, so that the safe use of gas is ensured.

In the use, intake pipe and blast pipe can lead to outdoor, can lead to the pipeline to block up because of birds nest, the carbon deposition etc. that insufficient gas burning caused, when pipeline blocks up seriously, can close the gas because of the fan department negative pressure is poor, and the wind pressure switch can not close the gas when the exhaust gas of fan department discharges information, stops gas hanging stove operation. And the wind pressure switch is usually arranged above the combustion chamber and is positioned in a high-temperature and low-temperature alternating area, condensed water is easy to generate at the position, so that the wind pressure switch is aged and damaged, and the gas wall-mounted furnace fails to work.

Disclosure of utility model

In order to avoid the condition that the hanging stove stops working due to the failure of the wind pressure switch, the application provides the gas hanging stove with the airflow monitoring and protecting function.

The application provides a gas wall-mounted furnace with an airflow monitoring and protecting function, which adopts the following technical scheme:

a gas wall-hanging stove with air current control protect function, includes:

a housing;

The combustion device comprises a combustion chamber and a gas valve, wherein the combustion chamber and the gas valve are arranged in the shell, and a burner fire row and a main heat exchanger are arranged in the combustion chamber;

The air inlet device comprises a fan arranged below the combustion chamber and communicated with the interior of the combustion chamber, and an air inlet pipe arranged above the shell and communicated with the shell;

The exhaust device comprises a smoke cap arranged above the combustion chamber and communicated with the combustion chamber, and an exhaust pipe, one end of which is communicated with the smoke cap, and the other end of which is provided with an air outlet arranged outside the shell;

The air flow monitoring device comprises a venturi tube which is arranged outside the combustion chamber and communicated with an air channel of the fan, and a wind pressure sensor which is fixed in the shell and communicated with the venturi tube, and the wind pressure sensor is arranged below the combustion chamber;

The controller is electrically connected with the wind pressure sensor and the gas valve, and receives an electric signal generated by the wind pressure sensor and controls the on-off of the gas valve through the electric signal.

Through adopting the technical scheme, when gas enters the combustion chamber from the air inlet pipe through the action of the fan, the venturi tube communicated with the wind pressure sensor supplies air to the wind pressure sensor, the wind pressure sensor transmits an electric signal to the controller, the controller controls the gas valve to open to supply air to the combustion chamber, the burner fires and burns gas, cold water is heated through the main heat exchanger, the burnt waste gas is discharged through the exhaust pipe communicated with the smoke cap, air is directly supplied to the combustion chamber through the fan, the pressure sensing of the wind pressure sensor is sensitive, the condition that the gas hanging stove stops running due to small negative pressure difference at the fan when the fan is used for discharging the waste gas is avoided, and normal use is ensured; and the wind pressure sensor is positioned below the combustion chamber, so that condensed water is less at the position, and damage to the wind pressure sensor is reduced.

Preferably, the casing is internally and fixedly provided with a supporting plate, the supporting plate is positioned below the combustion chamber, an air inlet hole is formed in the middle of the supporting plate, and the fan is fixedly arranged below the air inlet hole.

Through adopting above-mentioned technical scheme, with the fan setting in the fresh air inlet below, outside air gets into the intracavity above the backup pad from the intake pipe of casing top under the effect of fan, and then gets into the combustion chamber through the wind channel of fan, and the air that gets into the combustion chamber is more even.

Preferably, the venturi tube is mounted on the support plate through a clamp, and the wind pressure sensor is fixed on the support plate through a fixing piece.

Through adopting above-mentioned technical scheme, fix venturi and wind pressure sensor in the backup pad, be convenient for install, compact structure has saved installation space.

Preferably, the exhaust pipe is sleeved in the air inlet pipe, is coaxial with the air inlet pipe, and is shorter than the exhaust pipe.

Through adopting above-mentioned technical scheme, need when installing the hanging stove all set up air inlet and gas vent outdoor in the trompil on the wall, the exhaust pipe cover is established in the intake pipe and can be saved space, only opens a hole on the wall, and outside air gets into from the air inlet, and the waste gas that the burning produced is discharged from the gas outlet, and the intake pipe is shorter than the blast pipe, in can avoiding the intake inlet to intake the gas hanging stove with exhaust waste gas when admitting air.

Preferably, the gas valve is a proportional valve.

Through adopting above-mentioned technical scheme, the gas valve sets up the proportional valve, and the air input of accessible air input's size regulation gas makes the gas of entering and the air ratio of entering reach the best air-fuel ratio, can make the gas fully burn to guarantee that the flue gas is in normal state all the time, and furthest guarantees hanging stove normal work, and the energy utilization improves.

Preferably, the cross section of the smoke cap along the exhaust direction is gradually reduced, and the cross section area of the air outlet end is 0.05-0.2 times of that of the air inlet end.

By adopting the technical scheme, the surface vertical to the exhaust gas discharge direction is the cross section of the smoke cap, the smoke cap is arranged to be in a necking shape, and the exhaust gas passing through the smoke cap can be rapidly discharged along with the shrinking pressure increase of the cross section of the smoke cap.

Preferably, the inner wall of the combustion chamber is provided with a heat insulating plate, and the heat insulating plate is arranged between the burner fire row and the main heat exchanger.

Through adopting above-mentioned technical scheme, set up the heat insulating board in the combustion chamber inside can be with heat isolation in the combustion chamber, the heat diffusion that produces when avoiding gas burning guarantees the energy utilization rate, and avoids the high temperature to cause the harm to the outside component of combustion chamber.

Preferably, a detachable protective net is arranged at the exhaust port.

Through adopting above-mentioned technical scheme, set up the protection network in gas vent department, avoid because of its setting up the condition that the birds caused nesting outdoors, the protection network sets up detachable in time to wash the protection network.

Preferably, a detachable support piece is arranged between the air inlet and the exhaust pipe, the support piece is sleeved outside the exhaust pipe and is abutted to the air inlet, and the middle of the support piece is hollowed out.

Through adopting above-mentioned technical scheme, set up removable support piece between air inlet and blast pipe, can prevent intake pipe and blast pipe skew, cause the not coaxial condition, support piece fretwork, the air can follow fretwork department and get into the intake pipe.

In summary, the present application includes at least one of the following beneficial technical effects:

1. When gas enters the combustion chamber from the air inlet pipe through the action of the fan, the venturi pipe communicated with the wind pressure sensor supplies the wind pressure sensor, the wind pressure sensor transmits an electric signal to the controller, the controller controls the gas valve to open to supply gas to the combustion chamber, the burner fires and burns the gas, cold water is heated through the main heat exchanger, the burnt waste gas is discharged through the exhaust pipe communicated with the smoke cap, the fan directly supplies air to the combustion chamber, the condition that the gas wall-mounted furnace stops running due to small negative pressure difference at the fan when the fan is used for discharging the waste gas is avoided, and normal use is ensured;

2. The support plate is fixedly arranged in the shell, the fan is fixedly arranged below the air inlet hole of the support plate, external air enters the cavity above the support plate from the air inlet pipe above the shell under the action of the fan, and enters the combustion chamber through the air channel of the fan, so that the air entering the combustion chamber is more uniform;

3. The gas valve is set as a proportional valve, the gas inflow of the gas can be regulated according to the air inflow of the air, so that the ratio of the gas to the air can reach the optimal air-fuel ratio, the gas can be fully combusted, the smoke is always in a normal state, the normal work of the wall-mounted furnace is ensured to the maximum extent, and the energy utilization rate is improved.

Drawings

FIG. 1 is a schematic diagram of a gas wall-mounted boiler with an airflow monitoring and protecting function.

Fig. 2 is a schematic diagram of the structure of the airflow monitoring device.

FIG. 3 is an exploded view of FIG. 1A.

Reference numerals illustrate: 1. a housing; 11. a support plate; 111. an air inlet hole; 12. a vent hole; 13. a mounting hole; 14. an air inlet hole; 15. a sealed chamber; 2. a combustion device; 21. a combustion chamber; 211. a heat insulating plate; 22. a gas valve; 23. a burner fire row; 231. an ignition needle; 232. a flame feedback needle; 24. a main heat exchanger; 3. an air inlet device; 31. a blower; 32. an air inlet pipe; 321. a support; 4. an exhaust device; 41. a smoke cap; 42. an exhaust pipe; 421. a protective net; 5. an air flow monitoring device; 51. a venturi tube; 511. a clamp; 52. a wind pressure sensor; 521. a fixing member; 6. a controller;

Detailed Description

The application is described in further detail below with reference to fig. 1-3.

The embodiment of the application discloses a gas wall-mounted furnace with an air flow monitoring and protecting function. Referring to fig. 1 and 2, a gas wall-hanging stove with an air flow monitoring and protecting function comprises a shell 1, a combustion device 2, an air inlet device 3, an air exhaust device 4, an air flow monitoring device 5 and a controller 6.

Referring to fig. 1, a casing 1 is a rectangular sheet metal structure, a vent hole 12 is formed above the casing 1, and four mounting holes 13 through which water supply pipes penetrate and an air inlet hole 14 through which a gas pipeline passes are formed below the casing 1. The casing 1 sets up a backup pad 11 from 1/3 departments in the bottom, and backup pad 11 is sheet metal construction, uses screw fixed mounting at casing 1 inside, and an inlet opening 111 is offered to backup pad 11 centre.

The combustion device 2 is arranged above the inner support plate 11 of the housing 1, comprising a combustion chamber 21 and a gas valve 22.

The combustion chamber 21 is fixedly arranged on the rear wall of the shell 1, the distance between the combustion chamber 21 and the supporting plate 11 can be 50-100mm, the upper side and the lower side of the combustion chamber 21 are arranged in a penetrating way, the bottom of the combustion chamber 21 is provided with a burner fire row 23, and the upper part of the combustion chamber 21 is provided with a main heat exchanger 24.

The burner fire row 23 is provided with a head part adopting a harmonica structure, so that fuel gas can be uniformly sprayed out on the whole burner plane, and an ignition needle 231 and a flame feedback needle 232 for feeding back the combustion condition of flame are arranged above a gas nozzle.

The main heat exchanger 24 is made of finned red copper coils. One end of the coil pipe is filled with cold water, and the other end is discharged with hot water.

The inner wall of the combustion chamber 21 is provided with a heat insulating plate 211, the heat insulating plate 211 is arranged between the burner fire row 23 and the main heat exchanger 24, the thickness can be set to be 20-30mm, the heat diffusion generated during the combustion of gas is prevented, the energy utilization rate is ensured, and the damage to elements outside the combustion chamber 21 caused by high temperature is avoided.

Referring to fig. 1, a gas valve 22 is provided under the support plate 11, one end of which is connected to an air inlet end of the burner fire row 23, and the other end of which is communicated with a pipe passing through the air inlet hole 14 into the inside of the housing 1, and the gas valve 22 is provided as a proportional valve to adjust the amount of gas entering the combustion chamber 21.

Referring to fig. 2 to 3, the air inlet device 3 includes a blower 31 and an air inlet pipe 32. The fan 31 is fixedly arranged below the supporting plate 11, the fan 31 is arranged as a blower 31, a blower port is communicated with the air inlet 111 of the supporting plate 11, an air channel of the fan 31 directly penetrates through the bottom wall of the combustion chamber 21 to be communicated into the combustion chamber 21, and air is introduced into the combustion chamber 21.

The air inlet pipe 32 is arranged above the shell 1 and is communicated with the air inlet hole 111 arranged above the shell 1, the supporting plate 11 is in sealing connection with the shell 1 to form a sealing chamber 15, and external air can only enter the sealing chamber 15 through the air inlet pipe 32 under the action of the fan 31.

Referring to fig. 2-3, the exhaust device 4 includes a hood 41 and an exhaust duct 42. The smoke cap 41 is fixedly connected with the combustion chamber 21, the cross section of the smoke cap 41 along the exhaust direction is gradually reduced, the cross section area of the air outlet end is 0.05-0.2 times of the cross section area of the air inlet end, the air outlet end of the smoke cap 41 is connected with one end of the air outlet pipe 42, the other end of the air outlet pipe 42 passes through the air inlet pipe 32 to be communicated with the outside of the shell 1, the outer diameter of the air outlet pipe 42 can be set to 80mmm, the inner diameter of the air inlet pipe 32 can be set to 125mm, and in order to prevent the exhaust gas from being sucked into the gas hanging stove when the air inlet is in air inlet, the air inlet pipe 32 is 150-250mm shorter than the air outlet pipe 42.

Referring to fig. 3, a detachable protection net 421 is disposed at the air outlet of the air outlet pipe 42, and the specific protection net 421 is mounted at the air outlet of the air outlet pipe 42 by a bayonet or a screw, which may be configured to be screwed in this embodiment.

A supporting piece 321 is arranged between the air inlet of the air inlet pipe 32 and the air outlet pipe 42, the supporting piece 321 is sleeved outside the air outlet pipe 42 and connected with the air inlet, and the supporting piece 321 is arranged in a hollowed-out mode, so that air can enter conveniently.

Referring to fig. 2, the air flow monitoring device 5 includes a venturi tube 51 and a wind pressure sensor 52, the venturi tube 51 is installed below the support plate 11 through a yoke 511, one end of the venturi tube 51 is communicated with the air passage of the blower 31, and the other end is connected with the wind pressure sensor 52.

One end of the controller 6 is electrically connected with the wind pressure sensor 52 and the gas valve 22, receives an electric signal generated by the wind pressure sensor 52 and controls the on-off state of the gas valve 22 and the magnitude of the air inflow through the electric signal.

The embodiment of the application provides a gas wall-mounted furnace with an airflow monitoring and protecting function, which is implemented by the following principle: when gas enters the combustion chamber 21 from the air inlet pipe 32 through the action of the fan 31, the venturi tube 51 communicated with the wind pressure sensor 52 supplies air to the wind pressure sensor 52, the wind pressure sensor 52 transmits an electric signal to the controller 6, the controller 6 controls the gas valve 22 to open so as to supply air to the combustion chamber 21, the burner fire row 23 burns gas, the main heat exchanger 24 heats cold water, the combusted waste gas is discharged through the exhaust pipe 42 communicated with the smoke cap 41, the fan 31 directly supplies air to the combustion chamber 21, and the condition that the gas hanging stove stops running due to small negative pressure difference at the fan 31 when the fan 31 is used for discharging the waste gas is avoided, so that normal use is ensured.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (9)

1. A gas hanging stove with air current control protect function, its characterized in that: comprising the following steps:

a housing (1);

The combustion device (2), the combustion device (2) comprises a combustion chamber (21) and a gas valve (22) which are arranged inside the shell (1), and a burner fire row (23) and a main heat exchanger (24) are arranged inside the combustion chamber (21);

The air inlet device (3), the air inlet device (3) comprises a fan (31) arranged below the combustion chamber (21) and communicated with the interior of the combustion chamber (21), and an air inlet pipe (32) arranged above the shell (1) and communicated with the shell (1);

The exhaust device (4) comprises a smoke cap (41) which is arranged above the combustion chamber (21) and communicated with the combustion chamber (21), and an exhaust pipe (42) with one end communicated with the smoke cap (41) and the other end of which is provided with an air outlet at the outer side of the shell (1);

the air flow monitoring device (5), the air flow monitoring device (5) comprises a venturi tube (51) which is arranged outside the combustion chamber (21) and is communicated with an air duct of the fan (31), and a wind pressure sensor (52) which is fixed in the shell (1) and is communicated with the venturi tube (51), and the wind pressure sensor (52) is arranged below the combustion chamber (21);

The controller (6), controller (6) with wind pressure sensor (52) with gas valve (22) electricity is connected, controller (6) receive the signal of telecommunication that wind pressure sensor (52) takes place and pass through the break-make of gas valve (22) is controlled to the signal of telecommunication.

2. The gas wall-hanging stove with air flow monitoring protection function according to claim 1, wherein: the utility model discloses a combustion chamber, including casing (1), fixed backup pad (11) that set up in the casing (1), backup pad (11) are located combustion chamber (21) below, inlet opening (111) are seted up in the middle of backup pad (11), fan (31) fixed mounting is in inlet opening (111) below.

3. The gas wall-hanging stove with air flow monitoring protection function according to claim 2, wherein: the venturi tube (51) is mounted on the supporting plate (11) through a clamp (511), and the wind pressure sensor (52) is fixed on the supporting plate (11) through a fixing piece (521).

4. The gas wall-hanging stove with air flow monitoring protection function according to claim 1, wherein: the exhaust pipe (42) is sleeved in the air inlet pipe (32), is coaxial with the air inlet pipe (32), and is shorter than the exhaust pipe (42) in the air inlet pipe (32).

5. The gas wall-hanging stove with air flow monitoring protection function according to claim 1, wherein: the gas valve (22) is a proportional valve.

6. The gas wall-hanging stove with air flow monitoring protection function according to claim 1, wherein: the cross section of the smoke cap (41) is gradually reduced along the exhaust direction, and the cross section of the air outlet end is 0.05-0.2 times of that of the air inlet end.

7. The gas wall-hanging stove with air flow monitoring protection function according to claim 1, wherein: the inner wall of the combustion chamber (21) is provided with a heat insulating plate (211), and the heat insulating plate (211) is arranged between the burner fire row (23) and the main heat exchanger (24).

8. The gas wall-hanging stove with air flow monitoring protection function according to claim 1, wherein: a detachable protective net (421) is arranged at the pipe orifice of the exhaust pipe (42).

9. The gas wall-hanging stove with air flow monitoring protection function according to claim 4, wherein: a detachable support piece (321) is arranged between the pipe orifice of the air inlet pipe (32) and the air outlet pipe (42), the support piece (321) is sleeved on the outer side of the air outlet pipe (42) and is abutted to the air inlet pipe, and the middle of the support piece (321) is hollowed out.