CN216790504U

CN216790504U - Novel low-nitrogen gas heating water heater

Info

Publication number: CN216790504U
Application number: CN202220469097.0U
Authority: CN
Inventors: 史少鹍; 舒红威
Original assignee: Guangdong Callone Electric Appliance Co ltd
Current assignee: Guangdong Callone Electric Appliance Co ltd
Priority date: 2022-03-03
Filing date: 2022-03-03
Publication date: 2022-06-21
Anticipated expiration: 2032-03-03

Abstract

The utility model discloses a novel low-nitrogen gas heating water heater. Comprises a furnace body, a combustion chamber, a sealing chamber, a heat exchanger, a combustor, a proportional valve, a fan, a waterway circulation mechanism and a controller; the bottom of the combustion chamber is provided with a combustor, the combustor is provided with a plurality of fire rows, and the proportional valve can supply fuel to the fire rows through a nozzle and ignite through an ignition needle; the combustor is also provided with a baffle; the baffle is located the below of fire row, can block that the air gets into the passageway that the fire was arranged from the baffle below to reduce the secondary air input of fire row below. According to the utility model, air is blocked from entering the fire grate channel from the lower part of the baffle plate, so that the secondary air inflow amount below the fire grate is reduced, the amount of the air fed into the combustion chamber is relatively unchanged due to the sealing structure of the sealing chamber, and the primary air inflow amount of the air entering the fire grate from the side is increased, so that the mixing ratio of fuel and primary air is improved, and the combustion efficiency is effectively improved.

Description

Novel low-nitrogen gas heating water heater

Technical Field

The utility model relates to the technical field of heating equipment, in particular to a novel low-nitrogen gas heating water heater.

Background

A boiler is a device that heats water into hot water or steam using the heat energy of fuel or other energy sources. When burned, the fuel gas generates harmful substances such as nitric oxide and nitrogen oxides. The generation ratio of the nitrogen oxides is related to the mixing ratio of fuel and air, the combustion efficiency, the local higher combustion temperature of the combustion chamber and other factors; the stability and safety of the waterway structure are the premise of ensuring the higher heat exchange efficiency of the water heater. Therefore, a new and reasonable water heater structure is needed to be designed to reduce the generation of nitrogen oxides and improve the safety and stability of the water heater.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides a novel low-nitrogen gas heating water heater.

The technical scheme adopted by the embodiment of the utility model for solving the technical problem is as follows: a novel low-nitrogen gas heating water heater comprises: the device comprises a furnace body, a combustion chamber, a sealing chamber, a heat exchanger, a combustor, a proportional valve, a fan, a waterway circulation mechanism and a controller;

the sealing chamber is arranged in the furnace body, and the combustion chamber is arranged in the sealing chamber; the sealing chamber is communicated with the air inlet pipe; the fan is arranged at the top of the combustion chamber and is communicated with the air outlet pipe; the bottom of the combustion chamber is communicated with the sealing chamber;

the burner is arranged at the bottom of the combustion chamber, the burner is provided with a plurality of fire rows, and the proportional valve can supply fuel to the fire rows through a nozzle and is ignited through an ignition needle; the heat exchanger is positioned above the combustor and is provided with the waterway circulation mechanism; the controller is electrically connected with the fan and the proportional valve;

the combustor is also provided with a baffle; the baffle is located the below of fire row can block that air from the baffle below gets into the passageway that the fire was arranged to reduce the secondary air input of fire row below.

Optionally, the baffle is provided with a plurality of secondary air inlets.

Optionally, the air inlet pipe is sleeved outside the air outlet pipe.

Optionally, the waterway circulation mechanism includes a heating waterway and a bathroom waterway; the controller can change the combustion firepower of the burner and the working state of the waterway circulation mechanism according to the water flow velocity of the bathroom waterway, so that the water heater can be switched between a bathroom mode and a heating mode.

Optionally, the bathroom waterway includes a water flow sensor and two temperature sensors, and the two temperature sensors are respectively disposed at a water inlet end and a water outlet end of the bathroom waterway.

Optionally, the bathroom waterway further comprises a water inlet filter arranged at the water inlet end of the bathroom waterway.

Optionally, the heating water path includes a circulating water pump and an automatic air release valve provided in the circulating water pump.

Optionally, the heating water circuit includes a plurality of safety devices; the safety device comprises one or more of a water pressure sensor, a safety valve and an expansion tank.

Optionally, the heating waterway further comprises a built-in bypass, and the built-in bypass can be communicated with a water inlet end and a water outlet end of the heating waterway.

Optionally, the water inlet and outlet of the heating waterway and the water inlet and outlet of the bathroom waterway are respectively located at two opposite ends of the bottom of the furnace body.

When the fire grate of the burner burns, when the proportional valve supplies injection fuel to the fire grate through the nozzle, air is mixed and injected into the fire grate from the feed port of the fire grate, and the air is primary air inlet of the combustion of the fire grate; when high-temperature flue gas formed by burning fuel above the fire grate rises under the action of the fan, ascending air flow can be formed, so that air below the fire grate is sent to the position above the fire grate from the gap space of the fire grate to be mixed with the fuel, and the secondary air inlet is secondary air inlet for burning of the fire grate.

The utility model has the beneficial effects that: the combustion chamber is arranged in the sealing chamber, and air is filled into the air inlet pipe, enters the sealing chamber, enters the combustion chamber, is combusted, passes through the fan and is discharged through the air outlet pipe; the sealed chamber limits the access of the combustion chamber, and the quantity of air entering the sealed chamber is similar to the quantity of air sent out of the combustion chamber by the fan. According to the utility model, the baffle is arranged below the burner, so that air is prevented from entering a fire grate channel from the lower part of the baffle, and the secondary air inflow below the fire grate is reduced; and because the demand of secondary air inlet reduces, the clearance that the fire was arranged can reduce to increase the fire and arrange the quantity, reduce the burning load who arranges when the fire, thereby reduce the local high temperature who arranges the combustion surface when individual fire, effectively reduce the formation that reduces nitrogen oxide.

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible and comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural diagram of a novel low-nitrogen gas heating water heater according to an embodiment of the present invention.

Description of the main element symbols:

10. a furnace body; 11. an air inlet pipe; 12. an air outlet pipe; 20. a combustion chamber; 30. A sealed chamber; 40. a heat exchanger; 50. a burner; 51. fire grate; 52. an ignition needle; 53. a baffle plate; 54. a secondary air inlet; 60. a proportional valve; 70. a fan; 80. a waterway circulation mechanism; 81. a heating waterway; 82. a water circulating pump; 83. An automatic air release valve; 84. a water pressure sensor; 85. a safety valve; 86. an expansion tank; 87. a bypass is arranged inside; 88. a water replenishing valve; 90. a bathroom waterway; 91. a water flow sensor; 92. a temperature sensor; 93. a water inlet filter.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, a plurality of means is two or more, and greater than, less than, more than, etc. are understood as excluding the present number, and greater than, less than, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless explicitly defined otherwise, the terms "disposed," "mounted," "connected," and the like are to be understood in a broad sense, and for example, may be directly connected or indirectly connected through an intermediate; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be a mechanical connection; either as communication within the two elements or as an interactive relationship of the two elements. The technical field can reasonably determine the specific meaning of the words in the utility model by combining the specific contents of the technical scheme.

Examples

Referring to fig. 1, the utility model provides a novel low-nitrogen gas heating water heater, comprising: the furnace comprises a furnace body 10, a combustion chamber 20, a sealing chamber 30, a heat exchanger 40, a combustor 50, a proportional valve 60, a fan 70, a waterway circulation mechanism 80 and a controller;

the sealing chamber 30 is arranged in the furnace body 10, and the combustion chamber 20 is arranged in the sealing chamber 30; the seal chamber 30 communicates with the intake pipe 11; the fan 70 is arranged at the top of the combustion chamber 20 and is communicated with the air outlet pipe 12; the bottom of the combustion chamber 20 is communicated with the sealing chamber 30;

the bottom of the combustion chamber 20 is provided with a burner 50, the burner 50 is provided with a plurality of fire rows 51, and a proportional valve 60 can supply fuel to the fire rows 51 through a nozzle and is ignited through an ignition needle 52; the heat exchanger 40 is positioned above the combustor 50 and is provided with a waterway circulation mechanism 80; the controller is electrically connected with the fan 70 and the proportional valve 60;

the burner 50 is also provided with baffles 53; the baffle 53 is positioned below the fire grate 51 and can block the passage of air from below the baffle 53 into the fire grate 51 to reduce the amount of secondary air intake below the fire grate 51.

When the fire row 51 of the combustor 50 burns, and the proportional valve 60 supplies the injection fuel to the fire row 51 through the nozzle, air is mixed and injected into the fire row 51 from the feed port of the fire row 51, and the air is primary air intake for combustion of the fire row 51; when the high-temperature flue gas formed by the combustion of the fuel above the fire grate 51 rises under the action of the fan 70, an ascending air flow is formed, so that the air below the fire grate 51 is sent to the position above the fire grate 51 from the clearance space of the fire grate 51 to be mixed with the fuel, and the secondary air flow is secondary air inlet for the combustion of the fire grate 51.

In the utility model, a combustion chamber 20 is arranged in a sealing chamber 30, an air charging pipe 11 enters the sealing chamber 30, enters the combustion chamber 20, is combusted and then is discharged through a fan 70 and an air outlet pipe 12; the enclosure 30 limits the access to the combustion chamber 20 and the amount of air entering the enclosure 30 is similar to the amount of air that the fan 70 drives out of the combustion chamber 20. According to the utility model, the baffle 53 is arranged below the combustor 50, and the air is blocked from entering the channel of the fire grate 51 from the lower part of the baffle 53, so that the secondary air inflow amount below the fire grate 51 is reduced, and due to the sealing structure of the sealing chamber 30, the amount of the air sent into the combustion chamber 20 is relatively unchanged, so that the secondary air inflow is reduced, and meanwhile, the primary air inflow of the air entering the fire grate 51 from the side is increased, so that the mixing ratio of fuel and primary air is improved, and the combustion efficiency is effectively improved; moreover, because the requirement of secondary air intake is reduced, the gap of the fire row 51 can be reduced, so that the number of the fire rows 51 is increased, the combustion load of the fire rows 51 is reduced, the local high temperature of the combustion surface of each fire row 51 is reduced, and the generation amount of nitrogen oxides is effectively reduced.

For example, the power of the fire row 51 of the conventional hot water boiler burner 50 is 2.2kw, and under the same or similar volume space, the utility model can reduce the clearance of the fire row 51 and increase the number of the fire rows 51, so that the power of a single fire row 51 is reduced to 1.5kw, thereby effectively reducing the combustion load of the single fire row 51 and reducing the local high temperature of the combustion surface of the fire row 51.

In the present embodiment, the baffle 53 is opened with a plurality of secondary air intake holes 54. The secondary air inlet 54 is provided with a plurality of secondary air inlet supplementary channels for the baffle 53, the secondary air inlet cannot be completely blocked, the secondary air inlet can still be supplemented, meanwhile, air is discharged from the gap of the fire grate 51, the heat of the fire grate 51 can be taken away, and the local high temperature of the fire grate 51 is reduced.

In this embodiment, the inlet pipe 11 is sleeved outside the outlet pipe 12. The air inlet pipe 11 is sleeved outside the air outlet pipe 12 and is composed of a combined pipeline, so that the installation and the disassembly are convenient, and the design positions of the port for feeding air into the water heater and discharging smoke are convenient to control. And the exhausted high-temperature flue gas can preheat the air in the air inlet pipe 11, so that the heat utilization rate of combustion is improved.

In the present embodiment, the waterway circulation mechanism 80 includes a heating waterway 81 and a sanitary waterway 90; the controller may change the combustion power of the burner 50 and the operating state of the waterway circulation mechanism 80 according to the flow rate of the sanitary waterway 90, so as to switch the water heater between a sanitary mode and a heating mode.

Specifically, when a heating demand exists, the controller enters a heating mode, the circulating water pump 82 is started, the fan 70 is started again, after the wind pressure switch is switched on, the ignition device is ignited, the proportional valve 60 is started, the flame detection device detects flame, and the water heater enters normal heating operation; when there is a bathroom heat demand, the controller is switched to the bathroom mode, and when the bathroom water route 90 circulates, the controller adjusts the fuel supply amount of the proportional valve 60 according to the increase of the flow rate of the bathroom water route 90, reduces the circulation speed of the heating water route 81, and adjusts the air circulation rate of the fan 70, thereby increasing the firepower of the burner 50 and satisfying the hot water heating demand of the bathroom water route 90.

In some embodiments, the sanitary waterway 90 includes a water flow sensor 91 and two temperature sensors 92, and the two temperature sensors 92 are respectively disposed at the water inlet end and the water outlet end of the sanitary waterway 90. The water inlet end and the water outlet end of the bathroom water channel 90 of the two temperature sensors 92 can detect the temperature and the temperature difference value of the bathroom water channel 90 in time, shorten the reaction time, improve the control sensitivity of the controller and improve the comfort degree of the bathroom.

In some embodiments, the sanitary waterway 90 further includes a water inlet filter 93 disposed at a water inlet end of the sanitary waterway 90. The cleanness of the water quality entering the hot water furnace is ensured, and the generation of dirt of the bathroom water path 90 is reduced.

In the present embodiment, the heating water path 81 includes a circulation water pump 82 and an automatic purge valve 83 provided in the circulation water pump 82. The circulating water pump 82 provides driving force for the heating water channel 81, and the automatic exhaust valve can exhaust air in the heating water channel 81 so as to ensure the normal operation of the water channel system.

In this embodiment, the heating waterway 81 includes several safety devices; the safety device includes one or more of a water pressure sensor 84, a safety valve 85, and an expansion tank 86. When faults such as system overheating, pressure inconformity, water shortage and the like occur in the operation, the automatic shutdown can be realized to ensure safety, and the waterway structure has higher stable safety performance.

Furthermore, the heating water circuit 81 further includes an internal bypass 87, and the internal bypass 87 can communicate with the water inlet end and the water outlet end of the heating water circuit 81. When the outer waterway is blocked, the built-in bypass 87 is conducted, so that the heating water at the water outlet end of the heating waterway 81 can be conducted to the water inlet end, the heating waterway 81 in the hot water furnace forms a circulating waterway, the blockage of the heating waterway 81 in the hot water furnace is avoided, the heat exchanger 40 is prevented from continuously exchanging heat for the stagnant waterway, and the waterway structure in the hot water furnace, the heat exchanger 40 and other parts are protected.

In some embodiments, the waterway circulation mechanism 80 further includes a water replenishment valve 88, and the water replenishment valve 88 may communicate the pipe bathroom waterway 90 and the heating waterway 81 to replenish water from the open bathroom waterway 90 toward the closed heating waterway 81.

In this embodiment, the water inlet and outlet of the heating waterway 81 and the water inlet and outlet of the sanitary waterway 90 are respectively located at two opposite ends of the bottom of the furnace body 10. The water inlet and outlet interfaces of the heating waterway 81 and the water inlet and outlet interfaces of the bathroom waterway 90 are arranged oppositely, the integration level is high, external water pipes and elements are convenient to connect, the assembly and disassembly are convenient, and the assembly cost is reduced.

It is to be understood that the present invention is not limited to the above-described embodiments, and that equivalent modifications and substitutions may be made by those skilled in the art without departing from the spirit of the present invention, and that such equivalent modifications and substitutions are to be included within the scope of the appended claims.

Claims

1. The utility model provides a novel low nitrogen gas heating water heater which characterized in that includes: the device comprises a furnace body (10), a combustion chamber (20), a sealing chamber (30), a heat exchanger (40), a combustor (50), a proportional valve (60), a fan (70), a waterway circulation mechanism (80) and a controller;

the sealing chamber (30) is arranged in the furnace body (10), and the combustion chamber (20) is arranged in the sealing chamber (30); the sealing chamber (30) is communicated with the air inlet pipe (11); the fan (70) is arranged at the top of the combustion chamber (20) and is communicated with the air outlet pipe (12); the bottom of the combustion chamber (20) is communicated with a sealing chamber (30);

the bottom of the combustion chamber (20) is provided with the burner (50), the burner (50) is provided with a plurality of fire rows (51), and the proportional valve (60) can supply fuel to the fire rows (51) through a nozzle and is ignited through an ignition needle (52); the heat exchanger (40) is positioned above the combustor (50) and is provided with the waterway circulation mechanism (80); the controller is electrically connected with the fan (70) and the proportional valve (60);

the combustor (50) is also provided with a baffle (53); the baffle (53) is positioned below the fire grate (51) and can block the passage of air entering the fire grate (51) from the lower part of the baffle (53) so as to reduce the secondary air inflow below the fire grate (51).

2. The novel low-nitrogen gas heating water heater according to claim 1, characterized in that: the baffle (53) is provided with a plurality of secondary air inlets (54).

3. The novel low-nitrogen gas heating water heater according to claim 1, characterized in that: the air inlet pipe (11) is sleeved on the outer side of the air outlet pipe (12).

4. The novel low-nitrogen gas heating water heater according to claim 1, characterized in that: the waterway circulation mechanism (80) comprises a heating waterway (81) and a bathroom waterway (90); the controller can change the combustion firepower of the burner (50) and the working state of the waterway circulation mechanism (80) according to the water flow velocity of the bathroom waterway (90) so as to switch the water heater between a bathroom mode and a heating mode.

5. The novel low-nitrogen gas heating water heater according to claim 4, characterized in that: the bathroom waterway (90) comprises a water flow sensor (91) and two temperature sensors (92), wherein the two temperature sensors (92) are respectively arranged at the water inlet end and the water outlet end of the bathroom waterway (90).

6. The novel low-nitrogen gas heating water heater according to claim 5, characterized in that: the bathroom waterway (90) further comprises a water inlet filter (93) arranged at the water inlet end of the bathroom waterway (90).

7. The novel low-nitrogen gas heating water heater according to claim 4, characterized in that: the heating water path (81) comprises a circulating water pump (82) and an automatic air release valve (83) arranged on the circulating water pump (82).

8. The novel low-nitrogen gas heating water heater according to claim 7, characterized in that: the heating waterway (81) comprises a plurality of safety devices; the safety device comprises one or more of a water pressure sensor (84), a safety valve (85) and an expansion water tank (86).

9. The novel low-nitrogen gas heating water heater according to claim 8, characterized in that: the heating water channel (81) further comprises a built-in bypass (87), and the built-in bypass (87) can be communicated with the water inlet end and the water outlet end of the heating water channel (81).

10. The novel low-nitrogen gas heating water heater according to claim 4, characterized in that: the water inlet and outlet interfaces of the heating waterway (81) and the bathroom waterway (90) are respectively positioned at two opposite ends of the bottom of the furnace body (10).