Water-inflow-preventing smoke exhaust assembly and motor home water heater

Abstract

The utility model discloses a water-inflow-preventing smoke exhaust assembly and a motor home water heater. The water-inflow-preventing smoke exhaust assembly comprises a draught fan. The first smoke hood is provided with a first air port and a second air port, and the second air port is communicated with the air inlet of the fan; the second smoke hood is provided with a third air port and a fourth air port, the third air port is communicated with the air outlet of the fan, and the fourth air port is communicated with the outside. The limo water heater comprises a gas water heater and the water inflow prevention smoke exhaust assembly, and the first air opening is communicated with the smoke outlet of the gas water heater. According to the water inflow prevention smoke exhaust assembly and the motor home water heater, the smoke exhaust assembly is provided with the first smoke hood and the second smoke hood, the second smoke hood is communicated with the outside, and water inflow is reduced through the second smoke hood.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan structure field especially, relates to a prevent the exhaust smoke subassembly of water entry and motor home water heater. BACKGROUND

[0002] When using, the exhaust port of the gas water heater is generally discharged to the outside through the smoke cover, the outlet of the smoke cover is located outdoors, and thus rainwater can easily enter the interior through the smoke cover, affecting the utility of the interior fan.

[0003] Taking the gas water heater in the motor home as an example, in the fan structure of the motor home water heater, due to the structure limitation of the whole machine, the fan is often placed horizontally, and the air inlet channel and the motor are often on the same horizontal line, which can cause the motor to be flooded when water is sprayed from the outside on a rainy day, thereby causing the fan to be damaged. SUMMARY

[0004] In order to overcome at least one of the defects of the prior art, the utility model provides a prevent the exhaust smoke subassembly of water entry and motor home water heater, which is provided with a first smoke cover and a second smoke cover, the second smoke cover is communicated with the outside, and the second smoke cover reduces water entry.

[0005] The utility model adopts the technical scheme that:

[0006] A prevent the exhaust smoke subassembly of water entry, comprising,

[0007] A fan;

[0008] A first smoke cover is provided with a first air inlet and a second air inlet, the second air inlet is communicated with the air inlet of the fan;

[0009] A second smoke cover is provided with a third air inlet and a fourth air inlet, the third air inlet is communicated with the air outlet of the fan, and the fourth air inlet is communicated with the outside.

[0010] Further, the fourth air inlet is provided with an exhaust smoke pipeline, the inlet end of the exhaust smoke pipeline is communicated with the fourth air inlet; and the outlet end of the exhaust smoke pipeline is provided with a water baffle.

[0011] Further, the two sides of the water baffle are provided with connecting pieces, and the connecting pieces are connected to the inner wall of the exhaust smoke pipeline.

[0012] Further, the top end of the water baffle is provided with a guide slope, and the guide slope gradually inclines away from the outlet end of the exhaust smoke pipeline from bottom to top.

[0013] Further, the inlet end of the exhaust smoke pipeline is rotatably connected with a cover plate.

[0014] Further, the first air outlet is arranged in a horizontal direction; and the second air outlet is arranged in a vertical direction.

[0015] Further, the third air outlet and the fourth air outlet are both arranged in a horizontal direction; and the third air outlet is arranged at a position higher than the fourth air outlet in the vertical direction.

[0016] Further, the smoke inlet pipeline is communicated to the first air outlet.

[0017] Further, the fan is arranged at a bottom end of the first smoke hood and between the first smoke hood and the second smoke hood.

[0018] A motor home water heater comprises a gas water heater and the smoke exhaust assembly, and the first air outlet is communicated to a smoke outlet of the gas water heater.

[0019] Therefore, the motor home water heater has the following technical effects.

[0020] Due to the smoke exhaust, the second smoke hood can guide the smoke flow, so that the air forms a relatively stable flow field in the smoke hood. When rainwater attempts to enter, the air flow field can block and disperse the rainwater to a certain extent, further reducing the opportunity of the rainwater entering the air inlet and flowing to the fan motor, and also reducing the wind noise.

[0021] If the rainwater flows back to the second smoke hood through the fourth air outlet under the action of the wind, the rainwater is deposited in the second smoke hood and cannot enter the fan, so that the risk of damage to the fan motor caused by water entering can be significantly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a sectional view of the utility model;

[0024] Figure 3 It is a schematic diagram of the air flow direction structure of the utility model.

[0025] In the drawings, the reference signs have the following meanings: 10, first smoke hood; 11, first air outlet; 12, second air outlet; 20, second smoke hood; 21, smoke exhaust passage; 22, water baffle; 221, guide inclined surface; 23, third air outlet; 24, fourth air outlet; 30, fan; 40, gas water heater. DETAILED DESCRIPTION

[0026] In order to better understand and implement, the technical solutions in the embodiments of the utility model will be clearly and completely described below by combining the drawings in the embodiments of the utility model.

[0027] In the description of the utility model, it needs to explain, the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and so on indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawing, just for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore it can not be understood as the limitation of the utility model.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the utility model belongs. The terms used in the specification of the utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the utility model.

[0029] Referring to Figure 1 , Figure 2 and Figure 3 , the utility model discloses a kind of water-inlet-preventing smoke exhaust assembly, including fan 30, first smoke hood 10 and second smoke hood 20, first smoke hood 10 is equipped with first air port 11 and second air port 12, the air inlet of fan 30 is communicated with second air port 12, and first air port 11 can be with the smoke outlet position of equipment such as gas water heater 40.

[0030] In addition, the above-mentioned second smoke hood 20 is equipped with third air port 23 and fourth air port 24, third air port 23 is communicated with the air outlet of fan 30, and fourth air port 24 can be communicated with the outside.

[0031] On the basis of the above structure, when using the water-inlet-preventing smoke exhaust assembly of the utility model, the smoke exhaust assembly can be used for the smoke exhaust of gas water heater 40, can also be domestic gas water heater 40, can also be outdoor motor home water heater and the like.

[0032] When carrying out smoke exhaust action, the first air port 11 of first smoke hood 10 is communicated with the smoke outlet of gas water heater 40, the second air port 12 of first smoke hood 10 is communicated with the air inlet of fan 30, and the air outlet of fan 30 is communicated with the third air port 23 of second smoke hood 20, and the fourth air port 24 of second smoke hood 20 can be communicated with the outside, so that starting fan 30, the air flow direction generated by fan 30 is from first air port 11 to second air port 12, then is guided to third air port 23 by fan 30, and is guided out by fourth air port 24. Due to the export of flue gas, the existence of second smoke hood 20 can guide flue gas flow, so that air forms relatively stable flow field in the inside of smoke hood. When rainwater attempts to enter, air flow field can play a certain blocking and dispersing effect, further reduce the opportunity of rainwater entering air inlet and flowing to fan 30 motor, and also can reduce wind noise.

[0033] And if the rainwater is backflowed into the second smoke hood 20 under the action of the wind through the fourth air port 24, the rainwater is also deposited in the second smoke hood 20 and cannot enter the fan 30, thereby significantly reducing the risk of damage to the motor of the fan 30 due to water ingress.

[0034] More specifically, a smoke exhaust duct can also be provided at the fourth air port 24, with the inlet end of the smoke exhaust duct being communicated with the fourth air port 24, and the outlet end of the smoke exhaust duct being provided with the water baffle 22, so that when the flue gas is guided out through the fourth air port 24, it can be further guided through the smoke exhaust duct, and the flue gas is concentrated and guided out through the smoke exhaust duct.

[0035] And the water baffle 22 structure is also provided at the outlet end position of the smoke exhaust duct, which can block part of the backflow of rainwater, thereby further improving the waterproof performance.

[0036] Of course, the smoke exhaust duct can be communicated with the smoke outlet channel according to the use scene, facilitating the assembly of the smoke exhaust assembly with the motor home or indoor site.

[0037] Further, since the airflow speed in the smoke exhaust channel 21 will be faster, the water baffle 22 provided at the outlet position is easy to shake under the action of air pressure and produce noise, so a connecting piece can be provided on both sides of the water baffle 22, which is connected to the inner wall of the smoke exhaust duct, so that the connecting piece on both sides connects the water baffle 22 to the inner wall of the smoke exhaust duct, increasing the connecting surface of the water baffle 22 and the smoke exhaust duct and reducing the shaking of the water baffle 22.

[0038] Further, a guide slope 221 can also be provided at the top end of the water baffle 22, which gradually tilts away from the outlet end of the smoke exhaust duct from bottom to top, so that the water flow hitting the water baffle 22 can also be splashed outward due to the blocking of the guide slope 221, further reducing the water flow and improving the water-proof effect.

[0039] Further, the inlet end of the smoke exhaust duct is rotatably connected with a cover plate, which can be rotated to open the inlet end when the smoke exhaust action is performed, so that the flue gas can be smoothly discharged. After the smoke exhaust action is completed, the cover plate can be rotated to cover the inlet end, so that the smoke exhaust duct can be closed during non-smoke exhaust operation, reducing the backflow of rainwater during non-smoke exhaust operation.

[0040] Further, the first air port 11 of the first smoke hood 10 is arranged in the horizontal direction, and the second air port 12 is arranged in the vertical direction, so that the first smoke hood 10 can be connected horizontally to the smoke outlet position of the gas water heater 40, and since the second air port 12 is arranged in the vertical direction, the inlet of the fan 30 is conveniently arranged below and communicated.

[0041] More specifically, the third air inlet 23 and the fourth air inlet 24 are arranged in a horizontal direction, and the third air inlet 23 and the fourth air inlet 24 are staggered in a vertical direction, that is, the third air inlet 23 for communicating with the air outlet of the fan 30 is located higher than the fourth air inlet 24 for communicating with the outside, and the fan 30 is located below the third air inlet 23, so that when water is sprayed from the outside in a horizontal direction, the fourth air inlet 24 is staggered above the spraying direction of the water after entering, so that the water is more difficult to directly reach the position for communicating with the air outlet of the fan 30 under the action of gravity, because the water needs to overcome the resistance of gravity and air flow to enter the area where the motor is located, greatly reducing the possibility of water entering the motor.

[0042] Further, the smoke inlet pipe is further included, and the smoke inlet pipe is communicated to the first air inlet 11, one end of the smoke inlet pipe is communicated to the smoke outlet of the gas water heater 40, and the other end of the smoke inlet pipe is communicated to the first air inlet 11, so as to facilitate the pipeline communication.

[0043] Further, the fan 30 is arranged at the bottom end of the first smoke hood 10, the air inlet of the fan 30 is communicated to the second air inlet 12 at the bottom end of the first smoke hood 10, and the air outlet of the fan 30 is communicated to the third air inlet 23 at a higher position of the second smoke hood 20, so that the motor position of the fan 30 is located at a lower position of the first smoke hood 10 and the second smoke hood 20, and the air flow communication channels are located at a higher position, so that the water entering the second smoke hood 20 is settled at a low position of the second smoke hood 20 and is difficult to reach a high position, and thus is difficult to enter the inside of the fan 30 to affect the motor of the fan 30.

[0044] Embodiment 2,

[0045] A motor home water heater includes a gas water heater 40 and a water-proof smoke exhaust assembly of embodiment 1, and the first air inlet 11 is communicated to the smoke outlet of the gas water heater 40. When the smoke exhaust action is performed, the first air inlet 11 of the first smoke hood 10 is communicated to the smoke outlet of the gas water heater 40, the second air inlet 12 of the first smoke hood 10 is communicated to the air inlet of the fan 30, the air outlet of the fan 30 is communicated to the third air inlet 23 of the second smoke hood 20, and the fourth air inlet 24 of the second smoke hood 20 is communicated to the outside, so that the fan 30 is started, the air flow direction generated by the fan 30 is from the first air inlet 11 to the second air inlet 12, then to the third air inlet 23 guided by the fan 30, and then to the fourth air inlet 24. Due to the smoke exhaust, the existence of the second smoke hood 20 can guide the smoke flow, so that the air forms a relatively stable flow field in the smoke hood. When rainwater tries to enter, the air flow field can play a certain blocking and dispersing role, further reducing the opportunity of rainwater entering the air inlet and flowing to the motor of the fan 30, and also reducing the wind noise.

[0046] If rainwater is backflowed into the second smoke hood 20 under the action of wind through the fourth air inlet 24, the rainwater is also deposited in the second smoke hood 20 and will not enter the fan 30, thereby significantly reducing the risk of damage to the motor of the fan 30 due to water ingress.

[0047] As the motor is a key component of the fan 30, avoiding water ingress can not only prevent direct damage such as short circuit and corrosion of the motor, but also reduce the chain reaction of the entire fan 30 system caused by motor failure, such as insufficient combustion and inability to timely discharge heat due to the fan 30 stopping, thereby improving the reliability and stability of the fan 30 as a whole.

[0048] It should be noted that the structure of the water-proof smoke exhaust assembly in the present embodiment is applied to the motor home water heater, which is the same as that in embodiment 1, and the structure and effect are the same as those in embodiment 1. The structure of the gas water heater 40 is the same as that in the prior art, except that the structure of the smoke exhaust assembly is different, so it will not be described in detail here.

[0049] The technical means disclosed by the present application is not limited to the technical means disclosed in the above embodiments, but also includes technical solutions composed of any combination of the above technical features. It should be noted that for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements are also considered within the scope of protection of the present application.

Claims

1. A water intrusion resistant smoke evacuation assembly, comprising: Comprising, a fan; a first smoke hood, the first smoke hood being provided with a first air inlet and a second air inlet, the second air inlet being in communication with an air inlet of the fan; a second smoke hood, the second smoke hood being provided with a third air inlet and a fourth air inlet, the third air inlet being in communication with an air outlet of the fan, and the fourth air inlet being in communication with the outside.

2. The water-resistant exhaust assembly of claim 1, wherein, The fourth air inlet is provided with a smoke exhaust duct, an inlet end of the smoke exhaust duct being in communication with the fourth air inlet; an outlet end of the smoke exhaust duct is provided with a water baffle.

3. The water-resistant smoke evacuation assembly of claim 2, wherein, Both sides of the water baffle are provided with connecting pieces, the connecting pieces being connected to inner walls of the smoke exhaust duct.

4. The water-resistant smoke evacuation assembly of claim 2, wherein, A top end of the water baffle is provided with a guide slope, the guide slope gradually tilting away from the outlet end of the smoke exhaust duct from bottom to top.

5. The water-resistant smoke evacuation assembly of claim 2, wherein, The inlet end of the smoke exhaust duct is rotatably connected with a cover plate.

6. A water-resistant venting assembly according to any one of claims 1-5, wherein, The first air inlet is arranged along a horizontal direction; the second air inlet is arranged along a vertical direction.

7. The water-resistant smoke evacuation assembly of claim 6, wherein, The third air inlet and the fourth air inlet are both arranged along a horizontal direction; a position of the third air inlet in the vertical direction is higher than that of the fourth air inlet.

8. A water-resistant venting assembly according to any one of claims 1-5, wherein, Further comprising a smoke inlet duct, the smoke inlet duct being in communication with the first air inlet.

9. A water-resistant venting assembly according to any one of claims 1-5, wherein, The fan is arranged at a bottom end of the first smoke hood and between the first smoke hood and the second smoke hood.

10. A recreational vehicle water heater, comprising: Comprising a gas water heater and a water-inlet-preventing smoke exhaust assembly according to any one of claims 1-9, the first air inlet being in communication with a smoke outlet of the gas water heater.

Images