CN212585188U

CN212585188U - Double-fan gas water heater

Info

Publication number: CN212585188U
Application number: CN202021137995.3U
Authority: CN
Inventors: 孙连政; 张洪鑫
Original assignee: Hisense Guangdong Kitchen and Bath System Co Ltd
Current assignee: Hisense Guangdong Kitchen and Bath System Co Ltd
Priority date: 2020-06-18
Filing date: 2020-06-18
Publication date: 2021-02-23
Anticipated expiration: 2030-06-18

Abstract

The utility model discloses a double fan gas heater relates to water heater technical field, increases the air output for the rotational speed through improving the fan among the solution prior art, resists external wind pressure, leads to the air flow speed to increase, and the insufficient problem of gas combustion invents. The water heater comprises a shell, wherein an air outlet is formed in the shell; the combustor is arranged in the shell; the first fan is arranged between the smoke outlet and the air outlet of the combustor and used for exhausting the smoke in the combustor out of the shell through the air outlet; the second fan is arranged at the air outlet and used for exhausting the air in the shell to the outside of the shell through the air outlet. The utility model discloses a double fan gas heater is used for preparing hot water.

Description

Double-fan gas water heater

Technical Field

The utility model relates to a water heater technical field especially relates to a double fan gas heater.

Background

The gas water heater, also called gas water heater, is a gas appliance which uses gas as fuel and transfers heat to cold water flowing through a heat exchanger in a combustion heating mode to achieve the purpose of preparing hot water.

The smoke of current gas heater discharges fume, generally discharges the flue gas of burning to the external world through the pipe of discharging fume through the fan, but, the building that people live in now is higher and higher, and the wind pressure in the air also can crescent along with the increase of height, and the wind pressure is too big, then probably leads to outside wind to get into inside the gas heater through the pipe of discharging fume, leads to the inside flue gas of gas heater can not normally discharge, influences gas heater normal use.

Based on above-mentioned problem, prior art increases the air output through the rotational speed that improves the fan to resist external wind pressure, however, improve the rotational speed of fan, can increase gaseous velocity of flow, make the inside air of getting into gas heater flow fast, and through the pipe discharge outside of discharging fume, thereby lead to the gas burning insufficient, flame-out scheduling problem even.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides a double fan gas heater can resist external wind pressure when guaranteeing that the gas fully burns, avoids external wind to get into the pipe of discharging fume, leads to the flue gas refluence, and the condition that influences gas heater normal use takes place.

In order to achieve the above object, the embodiments of the present invention adopt the following technical solutions:

the embodiment of the utility model provides a pair of double fan gas heater, include:

the air conditioner comprises a shell, wherein an air outlet is formed in the shell;

the combustor is arranged in the shell;

the first fan is arranged between the smoke outlet and the air outlet of the combustor and used for exhausting the smoke in the combustor out of the shell through the air outlet;

the second fan, the second fan set up in air outlet department, the second fan be used for with the inside air of casing passes through the air outlet pump drainage extremely outside the casing to resist outside wind pressure.

The embodiment of the utility model provides a double fan gas heater, because be provided with two fans in the casing, first fan and second fan promptly, first fan sets up in the smoke vent department of combustor, be used for taking out the interior flue gas of combustor and arrange to the casing outside, the second fan sets up in the air vent department of casing, be used for resisting outside wind pressure to blowing outside the air vent, because the second fan sets up in the air vent department of casing, therefore, the rotational speed size of second fan can not influence the inside gas flow rate of combustor, and resist outside wind pressure through the second fan, also need not increase the rotational speed of first fan, first fan can normal operating, guarantee that the gas in the combustor can burn fully, avoid flameout the condition of water heater to take place.

Drawings

Fig. 1 is a schematic view of an internal structure of a water heater according to an embodiment of the present invention;

fig. 2 is a perspective view of the first fan, the second fan, the air guide shell and the smoke collecting hood inside the water heater provided by the embodiment of the present invention;

fig. 3 is a schematic view of the airflow flowing direction inside the smoke collecting hood and the air guiding shell according to the embodiment of the present invention;

fig. 4 is a first perspective view of an air guide casing according to an embodiment of the present invention;

fig. 5 is a second perspective view of the air guide casing according to the embodiment of the present invention;

fig. 6 is a cross-sectional view of the first fan, the second fan, the air guiding shell and the smoke collecting hood provided by the embodiment of the present invention;

fig. 7 is a first perspective view of a smoke collection cover according to an embodiment of the present invention;

fig. 8 is a second perspective view of the exhaust fume collecting hood according to the embodiment of the present invention.

Reference numerals: 100. a housing; 110. a smoke exhaust pipe; 120. a water inlet joint; 130. a water outlet joint; 140. a gas joint; 200. a burner; 210. a circulation line; 300. a first fan; 310. a first fan blade; 320. a first motor; 330. a first drive shaft; 400. a second fan; 410. a second fan blade; 420. a second motor; 430. a second drive shaft; 500. a wind guide shell; 510. a first inlet; 520. a second inlet; 530. an outlet; 540. a partition plate; 550. an air duct; 551. a first air duct; 552. a second air duct; 600. a smoke collecting hood; 610. a first body; 611. a smoke outlet; 620. a second body; 621. a smoke inlet; 700. a control module; 710. and a wind pressure sensor.

Detailed Description

The following describes in detail a double-fan gas water heater provided by an embodiment of the present invention with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Fig. 1 is an internal structure diagram of a specific embodiment of a dual-fan gas water heater provided by the present application, as shown in fig. 1, the water heater includes a casing 100, the casing 100 is an approximately rectangular parallelepiped structure, a burner 200 is disposed inside the casing 100, a circulation pipeline 210 is wound on the burner 200, one end of the circulation pipeline 210 is communicated with a water inlet pipe through a water inlet joint 120 disposed on a bottom surface of the casing 100, the other end of the circulation pipeline is communicated with a water outlet pipe through a water outlet joint 130 disposed on the bottom surface of the casing 100, and a gas inlet joint 140 communicated with a gas pipeline is further disposed on the bottom surface of the casing 100, so that gas can be provided into the burner 200, the gas is combusted inside the burner 200, and cold water in the circulation pipeline 210 is.

As shown in fig. 1, since the burner 200 generates heat by burning the gas, and the gas generates a large amount of smoke after being burned, a smoke outlet (not shown) for discharging the smoke is formed on the top surface of the air guide casing 500, so that the smoke generated by the burner 200 can be discharged outside the casing 100 through the smoke outlet, and the smoke outlet is formed on the top surface of the casing 100, so that the smoke can flow upward and be discharged outside the casing 100.

As shown in fig. 1, since the gas water heater is an indoor device, in order to prevent the smoke discharged from the gas water heater from affecting the indoor air quality, a smoke discharge pipe 110 is installed at the smoke discharge port of the cabinet 100, and the other end of the smoke discharge pipe 110 extends out of the room, so that the smoke can be directly discharged to the outside through the smoke discharge pipe 110 without affecting the indoor air quality.

As shown in fig. 1, for discharging the flue gas generated by the burner 200 more smoothly, a first fan 300 is disposed in the casing 100, the first fan 300 is disposed between the exhaust port and the exhaust port of the burner 200, and the flue gas generated inside the burner 200 can be directly extracted by the first fan 300 and discharged outside through the exhaust pipe 110, so that the exhaust efficiency can be improved, and the problem that the flue gas is too much to cause abnormal combustion inside the burner 200 and cause a fault of the water heater can be avoided.

As shown in fig. 1, because one end of the smoke exhaust pipe 110 extends out of the room, when the outdoor wind pressure is large, the external natural wind may be blown into the interior of the casing 100 through the smoke exhaust pipe 110, which results in the backflow of the smoke inside the combustor 200, and affects the normal combustion of the combustor 200, therefore, the interior of the casing 100 of the water heater provided by the present application is further provided with the second fan 400, the second fan 400 is disposed at the air outlet on the casing 100, the air inlet of the second fan 400 does not need to be communicated with the combustor 200, i.e., the air inlet of the second fan 400 directly blows the air inside the casing 100 into the smoke exhaust pipe 110, and is discharged out of the room, the pressure of the water heater exhausting to the outside can be increased through the effect of the second fan 400, the first fan 300 is helped to jointly resist the external wind pressure through the second fan 400, and thereby the external natural wind.

As shown in fig. 1, since the air outlets of the first fan 300 and the second fan 400 need to be communicated with the smoke exhaust pipe 110, as shown in fig. 3, an air duct 550 is disposed inside the enclosure 100 provided in the present application, as shown in fig. 4 and 5, the air duct 550 includes a first inlet 510, a second inlet 520, and an outlet 530, the first inlet 510 is communicated with the smoke exhaust port of the burner 200, the second inlet 520 is communicated with the inner cavity of the enclosure 100, the outlet is communicated with the smoke exhaust port of the enclosure 100, the first fan 300 is disposed corresponding to the first inlet 510, and the second fan 400 is disposed corresponding to the second inlet 520. By providing the air duct 550 inside the cabinet 100, the first fan 300 pumps the smoke in the burner 200 to the air outlet through the air duct 550 through the first inlet 510 to be discharged outside the cabinet 100, and the second fan 400 pumps the air inside the cabinet 100 to the air outlet through the air duct 550 through the second inlet 520 to be discharged outside the cabinet 100, that is, the smoke and the air pumped by the first fan 510 and the second fan 520 are mixed together and discharged through the air duct 550, so that the pressure of the air flow discharged from the air outlet can be increased to resist the external air pressure.

It should be noted that the inner cavity of the casing 100 refers to a space inside the casing 100 and outside the burner 200, that is, the second inlet 520 is not communicated with the inside of the burner 200, so as to ensure that the second fan 400 does not affect the flow velocity of the airflow inside the burner 200.

To prevent the mutual influence of the pumped air flows when the first fan 510 and the second fan 520 work together, as shown in fig. 3, the air duct 550 provided by the present application includes a first air duct 551 and a second air duct 552, as shown in fig. 2, 4, and 5, the first air duct 551 communicates with the first inlet and the outlet, and the second air duct 552 communicates with the second inlet and the outlet. The air duct 550 is divided into two independent air ducts, and the two independent air ducts share one outlet, so that the mutual influence of the air flows pumped and exhausted by the first fan 510 and the second fan 520 can be avoided, and the air flow pressure at the outlet can be increased.

As shown in fig. 2, 4 and 5, an air guiding casing 500 is fixed inside the enclosure 100, an air duct 550 is formed inside the air guiding casing 500, and a first inlet 510, a second inlet 520 and an outlet 530 are opened on the air guiding casing 500.

Specifically, the first inlet 510 and the second inlet 520 on the air guide shell 500 are respectively and correspondingly provided with the first fan 300 and the second fan 400, so that the smoke or air sucked by the first fan 300 and the second fan 400 enters the air guide shell 500, and is discharged into the smoke exhaust pipe 110 through the outlet 530 on the air guide shell 500, and is discharged out of the room through the smoke exhaust pipe 110, that is, the first fan 300 and the second fan 400 are both communicated with the smoke exhaust pipe 110 through the air guide shell 500, so as to commonly resist the external wind pressure.

As shown in fig. 2, a partition 540 is fixedly disposed inside the air guide casing 500, and the partition 540 divides the air duct 550 into a first air duct 551 and a second air duct 552. The inside of the air guide shell 500 is divided into two cavities, namely a first air duct 551 and a second air duct 552, by the partition 540, so that the first fan 300 and the second fan 400 do not interfere with each other when working at the same time, and smoke discharged by the first fan 300 and air discharged by the second fan 400 can smoothly flow to the outlet 530, enter the smoke exhaust pipe 110 and finally be discharged to the outside.

As shown in fig. 6, the air outlet of the enclosure 100 provided by the present application is disposed on the top surface, the partition 540 is disposed along the vertical direction and is perpendicular to the rear wall of the enclosure 100, as shown in fig. 4 and 5, the first inlet 510 and the second inlet 520 are respectively disposed on two side walls of the air guiding enclosure 500 parallel to the partition 540, and the outlet 530 is disposed on the top surface of the air guiding enclosure 500. Set up export 530 on the top surface of wind-guiding shell 500, be favorable to the better discharge of gas, set up baffle 540 vertical direction and the back wall of perpendicular to casing 100 to make first fan 300 and second fan 400 distribute about along the horizontal direction, can reduce the thickness dimension of casing 100 along the direction of perpendicular to back wall, thereby can reduce the whole volume of water heater, thereby be favorable to reducing the indoor space who occupies, and do benefit to pleasing to the eye.

In some embodiments, as shown in fig. 5 and 6, the first fan 300 includes a first fan blade 310, a first motor 320, and a first transmission shaft 330, the first fan blade 310 is disposed in the first air duct 551, the first motor 320 is disposed outside the air guiding shell 500, one end of the first transmission shaft 330 is fixedly connected to the first fan blade 310, and the other end is fixedly connected to an output shaft of the first motor 320. The first fan blade 310 is arranged inside the air guide shell 500, and the first motor 320 is arranged outside the air guide shell 500, so that the volume of the air guide shell 500 can be reduced, the accommodating space inside the air guide shell 500 is reduced, smoke can be exhausted as soon as possible, and the smoke exhaust efficiency is improved.

In some embodiments, as shown in fig. 4 and fig. 6, the second fan 400 includes a second fan blade 410, a second motor 420 and a second transmission shaft 430, the second fan blade 410 is disposed in the second air duct 552, the second motor 420 is disposed outside the air guiding shell 500, one end of the second transmission shaft 430 is fixedly connected to the second fan blade 410, and the other end is fixedly connected to an output shaft of the second motor 420. The second fan blade 410 is disposed inside the air guiding casing 500, and the second motor 420 is disposed outside the air guiding casing 500, so as to further reduce the volume of the air guiding casing 500, and accelerate the air flowing speed inside the air guiding casing 500, thereby increasing the pressure of blowing air outwards and improving the effect of resisting external wind pressure.

In order to prevent the first transmission shaft 330 and the second transmission shaft 430 from penetrating through the side wall of the air guiding casing 500, as shown in fig. 6, the first transmission shaft 330 penetrates through the first inlet 510 and is fixedly connected to the first motor 320 and the first fan blade 310 at two ends, respectively, and the second transmission shaft 430 penetrates through the second inlet 520 and is fixedly connected to the second motor 420 and the second fan blade 410 at two ends, respectively. The first inlet 510 and the second inlet 520 can prevent the first transmission shaft 330 and the second transmission shaft 430 from penetrating through the side wall of the air guide shell 500, which is beneficial to reducing the processing difficulty.

Specifically, as shown in fig. 3 and fig. 6, in the present application, the first fan blade 310 is disposed in the first air duct 551, the second fan blade 410 is disposed in the second air duct 552, and the first motor 320 and the second motor 420 are both disposed outside the air guiding shell 500, when the first motor 320 drives the first fan blade 310 to rotate, the first fan blade 310 sucks the flue gas inside the combustor 200 into the first air duct 551 through the first inlet 510, and discharges the flue gas into the smoke discharging pipe 110 on the casing 100 through the outlet 530, and then discharges the flue gas out of the room through the smoke discharging pipe 110, when the second motor 420 drives the second fan blade 410 to rotate, the second fan blade 410 sucks the air inside the casing 100 into the second air duct 552 through the second inlet 520, and discharges the air into the smoke discharging pipe 110 on the casing 100 through the outlet 530, and then discharges the air out of the room through the smoke discharging pipe 110, because the second inlet 520 is not communicated with the smoke discharging port of the combustor 200, the rotational speed of the second motor 420 does not affect the flow velocity inside the combustor 200, will not influence the inside combustion efficiency of combustor 200 promptly, so can increase the rotational speed of second motor 420, resist external wind pressure through second fan 400, simultaneously, the rotational speed of first motor 320 is unchangeable, does not influence the combustion efficiency of combustor 200, thereby cooperate through first fan 300 and second fan 400, when not changing first fan 300 rotational speed, can prevent the air current refluence again, guarantee the combustion efficiency of combustor 200, make the water heater can normally work.

The enclosure 100 of the double-fan gas water heater provided by the present application is further provided with a smoke collecting cover 600, as shown in fig. 2 and 7, a smoke inlet 621 of the smoke collecting cover 600 is communicated with a smoke outlet of the burner 200, as shown in fig. 8, a smoke outlet 611 of the smoke collecting cover 600 is communicated with the first inlet 510 of the wind guiding enclosure 500. Through setting up collection petticoat pipe 600 at casing 100, can make in the collection petticoat pipe 600 that the flue gas is concentrated, when the output speed of flue gas is greater than the exhaust velocity of flue gas promptly, have partial flue gas temporarily be in combustor 200, can make the flue gas temporarily stop in the inside accommodation space of collection petticoat pipe 600 through collection petticoat pipe 600 to avoid combustor 200 inside flue gas too much, influence normal combustion.

In some embodiments, as shown in fig. 6, the smoke collecting hood 600 provided by the present application includes a first body 610 and a second body 620, which are communicated with each other, as shown in fig. 7, a smoke inlet 621 is disposed on the second body 620, as shown in fig. 8, a smoke outlet 611 is disposed on the first body 610, the first body 610 is disposed between the first motor 320 and the wind guiding shell 500, the second body 620 is disposed between the first body 610 and the burner 200, the first motor 320 is fixed on an outer wall of the first body 610, the second motor 420 is fixed on an outer wall of the wind guiding shell 500, and the first transmission shaft 330 penetrates through a side wall of the first body 610 and extends into the first wind duct 551 through the smoke outlet 611 and the first inlet 510, and is fixedly connected to the first fan blade 310.

Specifically, as shown in fig. 3 and 6, the first inlet 510 and the second inlet 520 are respectively disposed on the left and right sidewalls of the air guiding shell 500, and the smoke outlet 611 of the burner 200 is disposed upward, so that the smoke collecting cover 600 is disposed as two parts, namely, the first body 610 and the second body 620, such that the smoke outlet 611 on the first body 610 corresponds to the first inlet 510, the smoke inlet 621 on the second body 620 is disposed downward and is communicated with the smoke outlet of the burner 200, and more smoke can be accommodated in the second body 620, when the first motor 320 drives the first fan blade 310 to rotate, the smoke accommodated in the second body 620 can be sucked into the air guiding shell 500 through the cavity in the first body 610, and the smoke can be discharged through the outlet 530 on the air guiding shell 500, such that the overall structure is more reasonable, and the smoke discharge is smoother.

As shown in fig. 2, the dual-fan gas water heater provided by the present application further includes a wind pressure sensor 710 and a control module 700, the wind pressure sensor 710 is disposed at the air outlet, and the wind pressure sensor 710, the first fan 300 and the second fan 400 are all electrically connected to the control module 700. The wind pressure at the air outlet of the enclosure 100 can be monitored in real time through the wind pressure sensor 710, the related value is fed back to the control module 700, and then the control module 700 controls the second fan 400 to be turned on or turned off according to the wind pressure, and adjusts the rotating speed of the second fan 400, so that energy can be saved.

Specifically, as shown in fig. 2, the wind pressure sensor 710 inside the casing 100 monitors the wind pressure blowing to the air outlet through the smoke exhaust pipe 110 in real time, that is, the wind pressure of the natural wind blowing to the inside of the casing 100 from the outside is monitored, when the wind pressure value is normal, the first fan 300 is controlled to work, the second fan 400 is stopped, when the wind pressure is large, the first fan 300 works normally, and the second fan 400 is controlled to start at the same time, thereby the external wind pressure is resisted by the wind discharged from the second fan 400, and according to the wind pressure value fed back by the wind pressure sensor 710, the rotating speed of the second fan 400 can be controlled, the external wind pressure is resisted more effectively, and the energy waste is avoided.

In some embodiments, the first fan 300 and the second fan 400 used in the present application may adopt an ac fan or a dc fan, the ac fan has only two gears for adjusting the wind speed, the control is simple and convenient, the dc fan can adjust the speed steplessly, and the wind pressure resistance effect is better.

In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A double fan gas water heater, comprising:

the combustor is arranged in the shell;

the second fan is arranged at the air outlet and used for exhausting the air in the shell to the outside of the shell through the air outlet.

2. The dual-fan gas water heater of claim 1, wherein a ventilation duct is disposed in the housing, the ventilation duct includes a first inlet, a second inlet and an outlet, the first inlet is communicated with the smoke outlet, the second inlet is communicated with the inner cavity of the housing, the outlet is communicated with the air outlet, the first fan is disposed corresponding to the first inlet, and the second fan is disposed corresponding to the second inlet.

3. The dual fan gas water heater of claim 2, wherein the air duct includes a first air duct and a second air duct, the first air duct communicating the first inlet with the outlet, the second air duct communicating the second inlet with the outlet.

4. The double-fan gas water heater according to claim 3, wherein an air guide shell is fixed in the casing, the air duct is formed in the air guide shell, and the first inlet, the second inlet and the outlet are formed in the air guide shell.

5. The double-fan gas water heater of claim 4, wherein a partition is fixedly arranged in the air guide shell, and the partition divides the air duct into the first air duct and the second air duct.

6. The dual fan gas water heater of claim 5, further comprising a smoke collection hood, a smoke inlet of the smoke collection hood being in communication with a smoke outlet of the burner, a smoke outlet of the smoke collection hood being in communication with the first inlet.

7. The double-fan gas water heater according to claim 6, wherein the fan blade of the first fan is disposed in the first air duct, the motor of the first fan is disposed outside the air guide casing, and the fan blade of the first fan is connected to the motor of the first fan through a transmission shaft of the first fan;

the fan blade of the second fan is arranged in the second air channel, the motor of the second fan is arranged outside the air guide shell, and the fan blade of the second fan is connected with the motor of the second fan through the second fan transmission shaft.

8. The dual fan gas water heater of claim 7, wherein the drive shaft of the first fan extends out of the air guide housing through the first inlet, and the drive shaft of the second fan extends out of the air guide housing through the second inlet.

9. The dual fan gas water heater of claim 8, wherein the fume collecting hood includes a first body and a second body which are communicated with each other, the fume inlet is disposed on the second body, the fume outlet is disposed on the first body, the first body is disposed between the motor of the first fan and the air guiding shell, the second body is disposed between the first body and the burner, and the transmission shaft of the first fan penetrates through the side wall of the first body and extends into the first air duct through the fume outlet and the first inlet.

10. The dual-fan gas water heater according to any one of claims 1-9, wherein a wind pressure sensor and a control module are disposed in the housing, the wind pressure sensor is disposed at the air outlet, and the wind pressure sensor, the first fan and the second fan are electrically connected to the control module.