CN215489807U - Smoke exhaust hood for gas water heater and gas water heater - Google Patents

Abstract

The application relates to an exhaust hood for a gas water heater and the gas water heater. A plane passing through the side surface of the opening of the smoke outlet is defined as a first virtual plane, the smoke inlet is divided into a first smoke inlet area and a second smoke inlet area which are connected with each other by the first virtual plane, and the first smoke inlet area and the smoke exhaust cavity are positioned on the same side of the first virtual plane; the smoke exhaust hood also comprises a wind shield arranged at the smoke inlet, and the projection of the wind shield towards the smoke inlet along the first direction falls into the range of the first smoke inlet area; the wind screen is configured to make the difference between a first air intake entering the first smoke intake zone and a second air intake entering the second smoke intake zone within a preset range. When the smoke exhaust hood is matched with a smoke exhaust machine for use, the suction force at the smoke inlet along the second direction is distributed more uniformly, so that the flame distribution of the ignition device of the gas water heater is more uniform, and the service life of the gas water heater is prolonged to a certain extent.

Description

Smoke exhaust hood for gas water heater and gas water heater

Technical Field

The application relates to the technical field of gas water heaters, in particular to a smoke exhaust hood for a gas water heater and the gas water heater.

Background

The gas water heater is a gas appliance which transfers heat to cold water of a heat exchanger in a combustion heating mode to achieve the purpose of preparing hot water.

The existing gas water heater generally comprises a water heater shell, an exhaust hood, an exhaust fan, an ignition device and the like, and smoke generated by the ignition device in the using process is extracted and exhausted through the exhaust fan. In order to save the overall occupied space of the smoke exhaust fan and the smoke exhaust hood in the water heater shell, the smoke exhaust hood is usually arranged in the water heater shell along the axial direction of the water heater shell, the smoke exhaust fan is arranged in the water heater shell along the axial direction perpendicular to the water heater shell, the smoke exhaust fan is arranged on a smoke exhaust port of the smoke exhaust fan (namely the smoke exhaust fan is transversely arranged on the smoke exhaust hood), and a bent part extending from a smoke inlet of the smoke exhaust fan to a smoke exhaust port of the smoke exhaust fan is formed on the smoke exhaust hood so as to accommodate the smoke exhaust fan.

However, in practical use of the gas water heater, the flame of the ignition device is often high, low and uneven, and the high flame is easy to disperse around, so as to generate extra heat radiation, which causes abnormal temperature in the combustion chamber of the ignition device, reduces the service life of the ignition device, and reduces the reliability of the gas water heater.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide an exhaust hood for a gas water heater and a gas water heater, which solve the problem of uneven flame of an ignition device caused by a smoke exhauster horizontally placed on the exhaust hood.

According to one aspect of the application, an exhaust hood for a gas water heater is provided, and is provided with a smoke inlet cavity and a smoke outlet cavity which are communicated with each other, the exhaust hood comprises a smoke inlet which is arranged at the bottom of the exhaust hood along a first direction and is communicated with the smoke inlet cavity, and a smoke outlet which is arranged on one side of the exhaust hood along a second direction and is communicated with the smoke outlet cavity, and the first direction and the second direction are perpendicular to each other;

a plane passing through the surface of the opening side of the smoke exhaust port is defined as a first virtual plane, the smoke inlet is divided into a first smoke inlet area and a second smoke inlet area which are connected with each other by virtue of the first virtual plane, and the first smoke inlet area and the smoke exhaust cavity are positioned on the same side of the first virtual plane;

the smoke exhaust hood further comprises a wind shield arranged at the smoke inlet, and the projection of the wind shield towards the smoke inlet along the first direction falls into the range of the first smoke inlet area;

the wind shield is configured to make a difference between a first intake air amount entering the first smoke inlet area and a second intake air amount entering the second smoke inlet area within a preset range.

A suction force distribution along the second direction is more even in the smoke inlet, so that the flame distribution of an ignition device of the gas water heater is more even, and the service life of the gas water heater is prolonged to a certain extent.

In one embodiment, the wind deflector is parallel to the plane of the smoke inlet.

In one embodiment, the smoke inlet has a first smoke inlet end and a second smoke inlet end which are oppositely arranged along the second direction, and the first smoke inlet end and the smoke exhaust cavity are positioned on the same side of the first virtual plane;

a smoke inlet part is arranged on the wind shield;

the smoke inlet part comprises a plurality of first smoke inlet holes distributed on the wind shield; the size of the first smoke inlet hole which is farther away from the first smoke inlet end is larger. The suction force at the smoke inlet can be distributed more uniformly, the flame of the ignition device of the gas water heater is distributed more uniformly, and the service life of the gas water heater is prolonged to a certain extent

In one embodiment, the smoke inlet part comprises a plurality of smoke inlet hole groups arranged at intervals along the second direction;

each smoke inlet hole group comprises a plurality of first smoke inlet holes which are arranged at intervals along a third direction;

wherein the first direction, the second direction and the third direction are perpendicular to each other.

In one embodiment, the difference between the areas of the smoke inlet and the wind shield is larger than the area of the smoke outlet. Is beneficial to the smoke discharge of the gas water heater.

In one embodiment, the wind shield is arranged in the smoke exhaust hood and is arranged at an angle with the plane of the smoke inlet. The first air intake entering the first smoke inlet area is not excessively reduced, and the difference between the first air intake entering the first smoke inlet area and the second air intake entering the second smoke inlet area can be ensured to be within a preset range.

In one embodiment, the included angle between the wind shield and the plane of the smoke inlet is 45-60 degrees.

In one embodiment, a smoke inlet part is arranged on the wind shield;

the smoke inlet part comprises a plurality of second smoke inlet holes distributed on the wind shield.

In one embodiment, the first air intake of the first smoke intake zone is less than the second air intake of the second smoke intake zone.

According to another aspect of the application, a gas water heater is provided, which comprises the smoke exhaust hood for the gas water heater.

Drawings

FIG. 1 shows a schematic structural diagram of a gas water heater in an embodiment of the present application;

FIG. 2 is a schematic view of an extractor hood and an extractor hood according to an embodiment of the present application;

FIG. 3 illustrates an exploded view of an enclosure in an embodiment of the present application;

FIG. 4 shows a schematic view of a smoke exhaust and an enclosure in another embodiment of the present application;

fig. 5 shows a schematic structural view of a wind deflector in an embodiment of the present application.

In the figure: 10. a gas water heater; 200. a water heater body; 300. a smoke exhaust machine; 100. a smoke exhaust hood; 111. a smoke inlet; 112. a smoke outlet; 1111. a first smoke inlet end; 1112. a second smoke inlet end; 1121. a first smoke exhaust end; 1122. a second smoke exhaust end; 113. a first smoke inlet zone; 114. a second smoke inlet area; 115. a first cover body portion; 116. a second cover body portion; 117. a first virtual plane; 120. a wind deflector; 1201. a first smoke inlet; 1202. a second smoke inlet; 1203. a first wind shielding end; 1204. a second wind-blocking end; 121. a smoke inlet channel; 122. and (5) flanging.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, 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 at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Fig. 1 shows a schematic structural diagram of a gas water heater in an embodiment of the present application, and fig. 2 shows a schematic structural diagram of an extractor hood and an extractor hood in an embodiment of the present application.

Referring to fig. 1 and 2, a gas water heater 10 in the embodiment of the present application includes an exhaust hood 100, a water heater body 200, and an exhaust fan 300, wherein the exhaust fan 300 is installed on the exhaust hood 100, the exhaust hood 100 is installed on the water heater body 200, and flue gas generated during the operation of the water heater body 200 is exhausted through the exhaust fan 300 and exhausted through the exhaust hood 100.

FIG. 3 shows an exploded view of an enclosure in an embodiment of the present application.

Referring to fig. 2 and 3, in an embodiment of the present application, a smoke exhaust hood 100 for a gas water heater 10 is provided, the smoke exhaust hood 100 has a smoke inlet cavity and a smoke exhaust cavity which are communicated with each other, the smoke exhaust hood 100 includes a smoke inlet 111 disposed at the bottom of the smoke exhaust hood 100 along a first direction and communicated with the smoke inlet cavity, and a smoke exhaust 112 disposed at one side of the smoke exhaust hood 100 along a second direction and communicated with the smoke exhaust cavity, the second direction is perpendicular to the first direction; specifically, in the embodiment shown in fig. 2 and 3, the first direction is a vertical direction, the second direction is a horizontal direction, the smoke inlet 111 is disposed at the lower end of the smoke exhaust hood 100, and the smoke outlet 112 is disposed at the left side of the smoke exhaust hood 100. Wherein the extractor hood 300 is mounted on the exhaust port 112 of the extractor hood 100.

Referring to fig. 1 and 3 again, a plane passing through the opening side surface of the smoke discharge opening 112 is defined as a first virtual plane 117, that is, the first virtual plane 117 is disposed along a first direction, and a dotted line in fig. 1 is the first virtual plane 117. The smoke inlet 111 is divided into a first smoke inlet area 113 and a second smoke inlet area 114 connected with each other by a first virtual plane 117, the first smoke inlet area 113 and the smoke discharge cavity are positioned on the same side of the first virtual plane 117, the smoke discharge cover 100 is divided into a first cover body part 115 and a second cover body part 116 by the first virtual plane 117, specifically, in the embodiment shown in fig. 3, the first smoke inlet area 113 is positioned on the right side of the second smoke inlet area 114, and the first cover body part 115 is positioned on the right side of the second cover body part 116. Because the smoke exhaust fan 300 is installed at the smoke exhaust port 112, the smoke exhaust fan 300 is also arranged along the second direction, when the smoke exhaust fan 300 works, the smoke exhaust fan 300 is transversely arranged along the left and right directions, so that the suction force at the left and right sides of the smoke inlet 111 of the smoke exhaust hood 100 is inconsistent, the suction force at the right side is larger, and thus, under the condition that the wind shielding plate 120 is not arranged, the first air intake entering the first smoke inlet area 113 is larger than the second air intake entering the second smoke inlet area 114.

Referring to fig. 3 again, the smoke exhaust hood 100 further includes a wind shield 120 disposed at the smoke inlet 111, a projection of the wind shield 120 toward the smoke inlet 111 along the first direction falls within a range of the first smoke inlet area 113, and the wind shield 120 is configured to make a difference between a first intake air amount entering the first smoke inlet area 113 and a second intake air amount entering the second smoke inlet area 114 within a preset range. The first air intake entering the first smoke intake area 113 is limited by the blocking function of the wind shield 120, so as to ensure that the first air intake entering the first smoke intake area 113 is reduced, so that the difference between the first air intake entering the first smoke intake area 113 and the second air intake entering the second smoke intake area 114 is within a preset range, and further the air intake at the smoke intake 111 along the second direction is more uniformly distributed, and the suction force at the smoke intake 111 along the second direction is more uniformly distributed based on the blocking function of the wind shield 120 in the use process of the smoke exhaust fan 300, so that the flame distribution of the ignition device of the gas water heater 10 is more uniform, and the service life of the gas water heater 10 is prolonged to a certain extent.

In some embodiments, a first pressure tap for measuring a first intake air pressure value within the first hood body portion 115 may be provided on the first hood body portion 115, the first pressure tap communicating with the first smoke intake zone 113; the second cover body portion 116 is provided with a second pressure measuring hole for measuring a second inlet air pressure value in the second cover body portion 116, and the second pressure measuring hole is communicated with the second smoke inlet area 114. The first pressure measuring hole is arranged at the position of a first dotted line hole on the right side shown in fig. 3, the second pressure measuring hole is arranged at the position of a second dotted line hole on the left side shown in fig. 3, a pressure gauge can be used for respectively obtaining a first air inlet pressure value in the first cover body part 115 and a second air inlet pressure value in the second cover body part 116, the pressure gauge is communicated with the first pressure measuring hole or the second pressure measuring hole through a sealing pipe (the sealing pipe is in sealing connection with the first cover body part 115 or the second cover body part 116), and the structure of the wind shield 120 is adjusted according to the obtained first air inlet pressure value and the obtained second air inlet pressure value, so that the difference between the first air inlet amount entering the first smoke inlet area 113 and the second air inlet amount entering the second smoke inlet area 114 is ensured to be within a preset range.

In some embodiments, the smoke inlet 111 has a first smoke inlet end 1111 and a second smoke inlet end 1112 arranged oppositely along the second direction, wherein the first smoke inlet end 1111 and the smoke exhaust cavity are located on the same side of the first virtual plane 117, and the first smoke inlet end 1111 and the second smoke inlet end 1112 are respectively located on two sides of the first virtual plane 117; the smoke exhaust 112 has a first smoke exhaust end 1121 and a second smoke exhaust end 1122 which are oppositely arranged along a first direction; the second smoke evacuation end 1122 is closer to the smoke inlet 111 in the first direction than the first smoke evacuation end 1121. Referring to the first direction as the up-down direction and the second direction as the left-right direction, the first smoke inlet end 1111 is located at the right side of the second smoke inlet end 1112.

Further, referring to fig. 2 again, the wind shielding plate 120 is parallel to the plane of the smoke inlet 111, and a gap is formed between the wind shielding plate 120 and the first virtual plane 117 along the second direction. Referring to fig. 3 again, the wind shielding plate 120 has a first wind shielding end 1203 and a second wind shielding end 1204 opposite to the first wind shielding end 1203, the first wind shielding end 1203 is closer to the first smoke inlet end 1111 than the second wind shielding end 1204, and an interval along the second direction is formed between the second wind shielding end 1204 and the first virtual plane 117. The wind shield 120 only shields the right area of the first smoke inlet area 113, so that the first air intake amount entering the first smoke inlet area 113 is reduced, and a part of smoke and air can enter the first smoke inlet area 113 from between the wind shield 120 and the first virtual plane 117, so that the first air intake amount entering the first smoke inlet area 113 can be slightly smaller than the second air intake amount entering the second smoke inlet area 114, and further the total air intake amount entering the smoke inlet 111 (the total air intake amount of the smoke inlet 111 is equal to the sum of the first air intake amount entering the first smoke inlet area 113 and the second air intake amount entering the second smoke inlet area 114) is ensured to be large enough without affecting the smoke discharge of the gas water heater 10.

Referring to fig. 3 again, the wind shield 120 is provided with a smoke inlet portion, the smoke inlet portion includes a plurality of first smoke inlet holes 1201 arranged on the wind shield 120, and the size of the first smoke inlet holes 1201 which are farther from the first smoke inlet end 1111 is larger. The first smoke inlet area 113 comprises a third area directly communicated with the second smoke inlet area 114 and a fourth area communicated with one side of the third area far away from the second smoke inlet area 114, and the air intake of the smoke inlet 111 along the second direction is adjusted through the arrangement of a plurality of first smoke inlet holes 1201 with gradually reduced sizes: because the smoke exhaust fan 300 is arranged horizontally, under the condition that the wind shield 120 is not arranged, the suction force of the fourth area is greater than that of the third area, the suction force of the third area is greater than that of the second smoke inlet area 114, and because the air intake rate is in direct proportion to the suction force, the air intake rates entering the fourth area, the third area and the second smoke inlet area 114 are decreased progressively, so that the air intake rates entering the fourth area, the third area and the second smoke inlet area 114 tend to be consistent by arranging the wind shield 120 and arranging a plurality of first smoke inlet holes 1201 with gradually decreased sizes on the wind shield 120, correspondingly, the suction force distribution at the smoke inlet 111 is more uniform, the flame distribution of the ignition device of the gas water heater 10 is more uniform, and the service life of the gas water heater 10 is prolonged to a certain extent.

Further, the smoke inlet portion comprises a plurality of smoke inlet hole groups arranged at intervals along the second direction, each smoke inlet hole group comprises a plurality of first smoke inlet holes 1201 arranged at intervals along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other. So set up for the total intake of advancing smoke mouth 111 distributes more evenly along the second direction, thereby makes smoke mouth 111 department draft distribute more evenly, makes gas heater 10's ignition's flame distribute more evenly, has improved gas heater 10's life-span to a certain extent.

Further, the difference between the areas of the smoke inlet 111 and the wind shield 120 is larger than the area of the smoke outlet 112, so that the total air intake of the smoke inlet 111 is not reduced due to the introduction of the wind shield 120, which is beneficial to smoke discharge of the gas water heater 10.

In another embodiment, referring to fig. 4, the wind shield 120 is disposed in the smoke exhaust hood 100 at an angle to the plane of the smoke inlet 111; at this time, the smoke inlet channel 121 is formed between the wind shield 120 and the first virtual plane 117, the wind shield 120 arranged at an angle effectively reduces the first air intake amount entering the first smoke inlet area 113, and based on the arrangement of the smoke inlet channel 121, the first air intake amount entering the first smoke inlet area 113 is not excessively reduced, so that the difference between the first air intake amount entering the first smoke inlet area 113 and the second air intake amount entering the second smoke inlet area 114 can be ensured within a preset range.

Further, the wind shielding plate 120 has a first wind shielding end 1203 and a second wind shielding end 1204 opposite to the first wind shielding end 1203, the first wind shielding end 1203 is closer to the first smoke inlet end 1111 than the second wind shielding end 1204, and the second wind shielding end 1204 is closer to the first smoke exhaust end 1121 than the first wind shielding end 1203. When the wind shield 120 and the plane of the smoke inlet 111 are arranged at an angle, the wind shield 120 is in an upward inclined state, so that the difference between the first air inlet amount entering the first smoke inlet area 113 and the second air inlet amount entering the second smoke inlet area 114 is within a preset range, and the integral installation space of the wind shield 120 and the smoke exhaust hood 100 can be reduced.

Further, the included angle between the wind shield 120 and the plane of the smoke inlet 111 is 45-60 degrees, so as to better ensure that the difference between the first air intake entering the first smoke inlet area 113 and the second air intake entering the second smoke inlet area 114 is within a preset range.

Further, referring to fig. 5, the wind shield 120 is provided with a smoke inlet portion, and the smoke inlet portion includes a plurality of second smoke inlet holes 1202 arranged on the wind shield 120, on one hand, the first air inlet amount entering the first smoke inlet area 113 is effectively reduced by the wind shield 120 arranged at an angle, on the other hand, the first air inlet amount entering the first smoke inlet area 113 is not excessively reduced based on the arrangement of the smoke inlet channel 121 and the plurality of second smoke inlet holes 1202, and the difference between the first air inlet amount entering the first smoke inlet area 113 and the second air inlet amount entering the second smoke inlet area 114 can be ensured within a preset range.

Further, the plurality of second smoke inlet holes 1202 are preferably the same size, so that the first air inlet amount entering the first smoke inlet area 113 can be adjusted by adjusting the included angle between the wind shield 120 and the plane of the smoke inlet 111, so that the difference between the first air inlet amount entering the first smoke inlet area 113 and the second air inlet amount entering the second smoke inlet area 114 is within a preset range.

Further, the first intake volume of the first smoke intake area 113 is smaller than the second intake volume of the second smoke intake area 114, and the first intake volume of the first smoke intake area 113 is preferably slightly smaller than the second intake volume of the second smoke intake area 114, so that the suction force distribution at the smoke intake 111 along the second direction is more uniform, and at the same time, the total intake volume entering the smoke intake 111 is ensured to be large enough without affecting the smoke discharge of the gas water heater 10.

Further, referring to fig. 3 and 5 again, the wind deflector 120 is provided with a flange 122 extending along the first direction, and the wind deflector 120 is connected with the inner wall of the first cover portion 115 by means of the flange 122, so that the wind deflector 120 is mounted and fixed on the first cover portion 115, specifically, the flange 122 can be welded on the inner wall of the first cover portion 115, thereby improving the strength of the whole structure.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. An exhaust hood for a gas water heater is provided with a smoke inlet cavity and a smoke outlet cavity which are communicated with each other, the exhaust hood (100) comprises a smoke inlet (111) which is arranged at the bottom of the exhaust hood (100) along a first direction and is communicated with the smoke inlet cavity, and a smoke outlet (112) which is arranged at one side of the exhaust hood (100) along a second direction and is communicated with the smoke outlet cavity, and the first direction and the second direction are perpendicular to each other;

the smoke inlet (111) is divided into a first smoke inlet area (113) and a second smoke inlet area (114) which are connected with each other by the aid of the first virtual plane (117), and the first smoke inlet area (113) and the smoke exhaust cavity are positioned on the same side of the first virtual plane (117);

the smoke exhaust hood (100) further comprises a wind shield (120) arranged at the smoke inlet (111), and the projection of the wind shield (120) towards the smoke inlet (111) along the first direction falls into the range of the first smoke inlet area (113);

the wind screen (120) is configured to make a difference between a first intake air amount entering the first smoke intake zone (113) and a second intake air amount entering the second smoke intake zone (114) within a preset range.

2. The extractor hood for gas water heaters according to claim 1, characterized in that the wind deflector (120) is parallel to the plane of the smoke inlet (111).

3. The extractor hood for gas water heaters according to claim 2, characterized in that said smoke inlet (111) has a first smoke inlet end and a second smoke inlet end oppositely arranged along said second direction, said first smoke inlet end and said smoke exhaust cavity being located on the same side of said first virtual plane (117);

a smoke inlet part is arranged on the wind shield (120);

the smoke inlet part comprises a plurality of first smoke inlet holes (1201) arranged on the wind shield (120); the size of the first smoke inlet hole (1201) farther from the first smoke inlet end is larger.

4. The extractor hood for gas water heaters as set forth in claim 3, wherein said smoke inlet portion comprises a plurality of groups of smoke inlet holes spaced along said second direction;

each smoke inlet hole group comprises a plurality of first smoke inlet holes (1201) arranged at intervals along a third direction;

wherein the first direction, the second direction and the third direction are perpendicular to each other.

5. The extractor hood for gas water heaters according to claim 2, characterized in that the difference between the areas of the smoke inlet (111) and the wind deflector (120) is greater than the area of the smoke outlet (112).

6. The extractor hood for gas water heaters according to claim 1, wherein the wind screen (120) is arranged in the extractor hood (100) and is arranged at an angle with the plane of the smoke inlet (111).

7. The extractor hood for gas water heaters according to claim 6, wherein the angle between the wind shield (120) and the plane of the smoke inlet (111) is 45-60 degrees.

8. The extractor hood for gas water heaters according to claim 6, wherein the wind shield (120) is provided with a smoke inlet part;

the smoke inlet part comprises a plurality of second smoke inlet holes (1202) distributed on the wind shield (120).

9. The enclosure for a gas water heater according to any of the claims 1 to 8, wherein a first air intake of the first smoke intake zone (113) is smaller than a second air intake of the second smoke intake zone (114).

10. Gas water heater, characterized in that it comprises an extractor hood (100) for a gas water heater (10) according to claim 9.

Images