Warm air device and electric water heater

Abstract

The utility model belongs to the technical field of electric water heaters, and discloses a warm air device and an electric water heater, the warm air device and an electric heater heat air flowing through an air outlet to form hot air, as the electric heater is arranged at the air outlet, the hot air can be quickly discharged through the air outlet, and a motor is arranged outside an air outlet channel, so that the electric heater can quickly discharge the hot air. Heat transferred to the space where the motor is located can be reduced as much as possible, so that the motor works in a relatively low-temperature environment, the high-temperature-resistant requirement of the motor is reduced, the cost is reduced, and the service life of the motor is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of electric water heaters, in particular to a warm air device and an electric water heater. Background Art

[0002] Some existing heating devices feature an air guide at the outlet, which is driven by a motor to achieve multi-angle air flow. During the hot air flow, heat is easily transferred to the motor, causing it to operate in a high-temperature environment. This not only increases the motor's high-temperature resistance requirements, increasing costs, but also shortens the motor's lifespan. Utility Model Content

[0003] One of the technical problems solved by the present invention is to provide a heating device that can enable a motor to operate in an environment with a relatively low temperature, thereby extending the service life of the motor.

[0004] The second technical problem solved by the present invention is to provide an electric water heater which can provide the electric water heater with a warm air function, extend the service life of the electric water heater, and improve user satisfaction.

[0005] The first technical problem mentioned above is solved by the following technical solution:

[0006] Heating device, including:

[0007] A heater housing, the heater housing including an air duct, a rotatable wind wheel disposed in the air duct, the air duct located downstream of the wind wheel forming an air outlet channel, the heater housing including an air outlet portion, the air outlet portion forming the air outlet channel arranged in a circumferentially closed manner, and an end of the air outlet channel away from the wind wheel forming an air outlet;

[0008] an electric heater, the electric heater being arranged in the air outlet;

[0009] The motor is located outside the air outlet channel, and the output shaft of the motor is connected to the swing blade in a transmission manner. The motor can drive the swing blade to swing to open and close the air outlet.

[0010] Compared with the background technology, the heating device described in the present invention has the following beneficial effects: in the heating device, the wind wheel rotates to send the air in the air duct to the air outlet channel, and the electric heater heats the air flowing through the air outlet to form hot air. The electric heater is set at the air outlet, and the hot air will be quickly discharged through the air outlet. The motor is set outside the air outlet channel, which can minimize the heat transferred to the space where the motor is located, so that the motor can operate in a relatively low temperature environment, which is beneficial to reduce the high temperature resistance requirements of the motor to reduce costs, and also helps to extend the service life of the motor.

[0011] In one embodiment, two motors are provided, and the swing blade is provided between the two motors along its length direction.

[0012] In one embodiment, the heater housing includes a lower housing provided with the air outlet, an upper housing located above the lower housing and connected to the lower housing, and a mounting housing with an opening at the top; the motor is disposed in the mounting housing;

[0013] The lower end of the installation shell is connected to the lower shell, and the upper shell cover is arranged outside the installation shell to block the top opening of the installation shell.

[0014] In one embodiment, the heating device further includes a rotating rod, one end of which is connected to the output shaft of the motor, and the other end of which is movably passed through the heating housing and then connected to the swing blade.

[0015] In one embodiment, a mounting plate is protruded from the inner bottom wall of the mounting shell, and the rotating rod is axially limited between the inner side wall of the mounting shell and the mounting plate along the output shaft of the motor.

[0016] In one embodiment, when the swing blades are in an open position where the air outlet is opened to the maximum, the swing blades are arranged below the mounting housing at intervals in a vertical direction.

[0017] In one embodiment, the front end of the mounting shell extends forward from the lower shell, so that when the swing blades are in an open position where the air outlet is opened to the maximum, the swing blades are arranged at intervals below the mounting shell in the vertical direction.

[0018] In one embodiment, the rotating rod includes a straight portion connected to the output shaft of the motor and an arc portion connected to the swing blade, and the straight portion and the arc portion are connected to form the rotating rod in a U shape;

[0019] The angle formed by the straight portion and the plane where the swing blade is located is 130°-135°.

[0020] In one embodiment, the rotating rod is provided with a weight-reducing groove extending along the extending direction thereof, and a plurality of first reinforcing ribs are provided in the weight-reducing groove and arranged at intervals along the extending direction of the rotating rod.

[0021] In one embodiment, a plug-in slot is provided on one of the output shaft of the motor and the rotating rod, and a plug-in protrusion is provided on the other, the plug-in protrusion is inserted into the plug-in slot, and the cross-section of the plug-in slot is non-circular.

[0022] The second technical problem is solved by the following technical scheme:

[0023] The electric water heater comprises a water heater shell and the warm air device according to any one of the embodiments.

[0024] Compared with the background art, the electric water heater has the beneficial effects that:

[0025] The electric water heater provided by the utility model, including the warm air device of any one of the above embodiments, the air in the air duct is sent to the air outlet channel by the rotation of the wind wheel, the electric heater heats the air passing through the air outlet to form hot air, the electric heater is arranged at the air outlet, the hot air is quickly discharged through the air outlet, the motor is arranged outside the air outlet channel, the heat transferred to the space where the motor is located can be reduced as much as possible, the motor works in a relatively low temperature environment, which is beneficial to reducing the high temperature resistance requirement of the motor to reduce the cost, and is also helpful to prolong the service life of the motor, so as to improve the user satisfaction. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a sectional view of the electric water heater provided by the utility model embodiment;

[0027] Figure 2 is Figure 1 is a local enlarged schematic view of M in the figure;

[0028] Figure 3 is a structural schematic view of the warm air device (the swing air leaf is in the open position of the maximum opening degree of the air outlet) provided by the utility model embodiment;

[0029] Figure 4 is a first split schematic view of the warm air device provided by the utility model embodiment;

[0030] Figure 5 is a second split schematic view of the warm air device provided by the utility model embodiment;

[0031] Figure 6 is Figure 5 is a local enlarged schematic view of A in the figure;

[0032] Figure 7 is a structural schematic view of the swing air leaf provided by the utility model embodiment and arranged with the rotating rod;

[0033] Figure 8 is Figure 7 is a local enlarged schematic view of B in the figure;

[0034] Figure 9 is Figure 3 is a local enlarged schematic view of C in the figure;

[0035] Figure 10 It is a side view of a swing blade equipped with a rotating rod provided in an embodiment of the present utility model.

[0036] In the picture:

[0037] 11. Air duct; 12. Mounting housing; 13. Air inlet; 14. Air outlet; 15. Mounting protrusion; 16. Mounting plate; 17. Upper housing; 18. Lower housing; 181. Air outlet;

[0038] 21. Motor; 22. Rotating rod; 221. Straight portion; 222. Arc portion; 223. Weight-reducing groove; 224. First reinforcing rib; 225. Second reinforcing rib; 226. Connecting slot; 23. Mounting lug; 24. Output shaft;

[0039] 3. Swing the fan blades;

[0040] 4. Electric heater;

[0041] 5. Wind wheel;

[0042] 100. Warm air device; 200. Water heater body; 300. Water heater shell. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0044] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do 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 therefore cannot be understood as a limitation on this application.

[0045] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0046] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixedly connected, or detachably connected, or integrally connected, can be mechanically connected, or electrically connected, can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] As Figure 1 and Figure 2 The embodiment of the utility model provides a kind of warm air device, which includes warm air shell, and warm air shell includes air duct 11, rotatable fan 5 is arranged in air duct 11, air duct 11 downstream of fan 5 forms air outlet passage, and warm air shell includes air outlet portion 181, air outlet passage is formed in air outlet portion 181 Circumferentially closed arrangement, the end of air outlet passage away from fan 5 forms air outlet 14, and electric heater 4 is arranged in air outlet 14, and electric heater 4 is used to heat the air passing through air outlet 14 to form hot air, and hot air is then discharged through air outlet 14.Exemplarily, electric heater 4 is PTC heater.

[0048] It should be noted that air duct 11 upstream of fan 5 forms air inlet passage, and the end of air inlet passage away from fan 5 forms air inlet 13.

[0049] The warm air device 100 further includes a swing air leaf 3 and a motor 21, the motor 21 is located outside the air outlet passage, the output shaft 24 of the motor 21 is in transmission connection with the swing air leaf 3, and the motor 21 can drive the swing air leaf 3 to swing to open and close the air outlet 14.

[0050] Fan 5 rotates to send air in air duct 11 to air outlet passage, since electric heater 4 is arranged in air outlet 14, hot air formed by heating through electric heater 4 will be quickly discharged through air outlet 14, motor 21 is located outside air outlet passage, which can reduce the heat transferred to the space where motor 21 is located as much as possible, so that motor 21 works in a relatively low temperature environment, which is conducive to reducing the high temperature resistance requirement of motor 21 to reduce cost, and also helps to prolong the service life of motor 21.

[0051] In some embodiments, the air outlet portion 181 is a heat insulation structure, which can further reduce the heat energy of hot air in the air outlet 14 to the space where the motor 21 is located, which is conducive to making the motor 21 in a relatively low temperature environment.

[0052] Exemplarily, air outlet portion 181 includes a top plate and a bottom plate disposed vertically opposite each other, and two side plates disposed horizontally opposite each other. The top plate, one side plate, the bottom plate, and the other side plate are sequentially sealed and connected around the circumference of air outlet 14 to form a circumferentially enclosed air outlet passage. Exemplarily, air outlet portion 181 is an integrally formed structural member.

[0053] In some embodiments, as Figures 3 to 5 As shown, two motors 21 are provided, and the air outlet 181 is provided between the two motors 21 along the length direction of the swing blade 3 .

[0054] The air outlet portion 181 is arranged between the two motors 21 along the length direction of the swing blade 3, and the forces at both ends of the length direction of the swing blade 3 are balanced, which can improve the stability of the swing blade 3 in the process of opening and closing the air outlet 14, and can also make the swing blade 3 fit more closely with the heater housing, so that the swing blade 3 can seamlessly close the air outlet 14.

[0055] For example, the swing blade 3 has an arc-shaped structure. To improve the structural strength of the swing blade 3, a reinforcement strip is provided on the inner wall surface of the swing blade 3. Providing the reinforcement strip on the inner wall surface of the swing blade 3 can improve the aesthetic performance of the swing blade 3 and avoid the reinforcement strip being directly exposed and affecting the aesthetics of the heating device 100.

[0056] It should be noted that the length direction of the swing blade 3 is the left-right direction, which refers to the left-right direction when the user is facing the control panel of the electric water heater. The swing blade 3 has an inner wall surface and an outer wall surface that are arranged opposite each other along the thickness direction. When the swing blade 3 is in the closed position, closing the air outlet 14, the inner wall surface is located inward of the outer wall surface, that is, the outer wall surface is exposed to the outside, while the inner wall surface is concealed inside.

[0057] In some embodiments, the heater device 100 also includes a rotating rod 22, one end of which is connected to the output shaft 24 of the motor 21, and the other end of which is movably connected to the swing blade 3 after passing through the heater housing. The motor 21 drives the swing blade 3 to open and close the air outlet 14 through the rotating rod 22.

[0058] In some embodiments, as Figures 1 to 5 As shown, the heater housing includes a lower housing 18 provided with an air outlet 181, an upper housing 17 located above the lower housing 18 and connected to the lower housing 18, and an installation housing 12 with a top opening; the motor 21 is arranged in the installation housing 12, the lower end of the installation housing 12 is connected to the lower housing 18, and the upper housing 17 is covered outside the installation housing 12 to block the top opening of the installation housing 12.

[0059] The mounting shell 12 is provided with a top opening, which is convenient for installing the motor 21 in the mounting shell 12, and the top opening of the mounting shell 12 is blocked by the upper shell 17 which is provided on the outside of the mounting shell 12, so that the motor 21 is enclosed in a closed space to prevent hot air from entering the sealed space and to prevent the motor 21 from being exposed and affecting the aesthetic effect.

[0060] In some embodiments, as Figures 6 to 8 As shown, one of the output shaft 24 of the motor 21 and the rotating rod 22 is provided with an inserting groove 226, and the other is provided with an inserting protrusion, which is inserted into the inserting groove 226, and the cross section of the inserting groove 226 is non-circular.

[0061] For example, the insertion groove 226 is provided on the rotating rod 22, and the insertion protrusion is provided on the output shaft 24 of the motor 21. Since the insertion groove 226 is non-circular, relative sliding between the output shaft 24 of the motor 21 and the rotating rod 22 can be prevented, so that the motor 21 can effectively drive the rotating rod 22 to rotate.

[0062] Exemplarily, the insertion slot 226 is a waist-shaped slot, and accordingly, the insertion protrusion is a waist-shaped structure with the same shape as the waist-shaped slot. In other embodiments, the insertion slot 226 can also be a rectangular hole, and accordingly, the insertion protrusion is a rectangular block with the same shape as the rectangular hole.

[0063] In some embodiments, the motor 21 is a stepper motor. The rotation angle of the output shaft 24 of the motor 21 can be controlled to adjust the opening angle of the oscillating blades 3 according to actual needs, thereby adjusting the airflow direction. The motor 21 can also be controlled to drive the oscillating blades 3 to swing back and forth, thereby achieving a comfortable warm air effect. The airflow effect can also be adjusted by controlling the speed at which the oscillating blades 3 are driven by the motor 21.

[0064] In some embodiments, as Figure 5 、 Figure 6 and Figure 9 As shown, the inner bottom wall of the mounting housing 12 is provided with a mounting protrusion 15. The output shaft 24 of the motor 21 rotatably passes through the mounting protrusion 15 and is connected to the rotating rod 22. The mounting protrusion 15 supports the output shaft 24 of the motor 21, thereby improving the rotational stability of the oscillating blades 3 when the motor 21 drives the oscillating blades 3 to rotate via the rotating rod 22.

[0065] In some embodiments, as Figure 5 、 Figure 6 and Figure 9As shown, a mounting plate 16 is protruding from the inner bottom wall of the mounting housing 12, and the rotating rod 22 is axially constrained between the side wall of the mounting housing 12 and the mounting plate 16 along the output shaft 24 of the motor 21. This arrangement prevents the rotating rod 22 from shaking when the motor 21 drives the swing blades 3 to open and close the air outlet 14 via the rotating rod 22, thereby improving the rotational stability of the rotating rod 22.

[0066] In some embodiments, as Figure 3 、 Figure 6 and Figure 9 As shown, the motor 21 is mounted on the mounting plate 16 by fasteners. This arrangement allows the motor 21 to be detachable, making it easy to quickly disassemble and assemble the motor 21 during later maintenance.

[0067] Exemplarily, the housing of the motor 21 is provided with two mounting ear plates 23, the two mounting ear plates 23 are arranged at 180 degrees, two mounting plates 16 are provided, the mounting protrusion 15 is arranged between the two mounting plates 16, the two mounting ear plates 23 correspond to the two mounting plates 16 one by one, and the mounting ear plates 23 and the corresponding mounting plates 16 are connected by fasteners such as bolts.

[0068] In some embodiments, as Figure 8 As shown, a weight-reducing groove 223 extending along the extending direction of the rotating rod 22 is provided on the rotating rod 22 , and a plurality of first reinforcing ribs 224 spaced apart along the extending direction of the rotating rod 22 are provided in the weight-reducing groove 223 .

[0069] By providing the weight-reducing groove 223 , the weight of the rotating rod 22 can be reduced, and the power requirement for the motor 21 can be reduced; by providing the first reinforcing rib 224 , the structural strength of the rotating rod 22 is ensured, so that the rotating rod 22 can stably support the swing blade 3 .

[0070] In some embodiments, as Figure 10 As shown, a second reinforcing rib 225 is provided at the connection position between the rotating rod 22 and the swing blade 3 to improve the structural strength of the connection position between the rotating rod 22 and the swing blade 3.

[0071] In some embodiments, the rotating rod 22 and the swing blade 3 are an integral structural component formed by injection molding, which can simplify the processing of the rotating rod 22 and the swing blade 3, reduce processing costs, and improve processing efficiency.

[0072] It should be noted that the integrated structural member is made of any one of acrylonitrile-butadiene-styrene copolymer, high-impact polystyrene, or polycarbonate, which has good heat resistance and can prevent the hot air from being blown out through the air outlet 14 and causing the oscillating blades 3 to be easily deformed.

[0073] In some embodiments, as Figure 1 and Figure 10As shown, the front end of the mounting housing 12 extends forward from the lower housing 18. When the swing blades 3 are in the open position, which maximizes the opening of the air outlet 14, the swing blades 3 are vertically spaced apart below the mounting housing 12. This arrangement prevents the swing blades 3 from contacting the mounting housing 12 and causing wear and tear on the mounting housing 12, which could affect the aesthetics of the heater 100.

[0074] Specifically, the rotating rod 22 includes a straight portion 221 connected to the output shaft 24 of the motor 21, and an arc portion 222 connected to the swing blade 3. The straight portion 221 and the arc portion 222 are connected to form a U-shaped rotating rod 22; the angle formed by the straight portion 221 and the plane where the swing blade 3 is located is 130°-135°, wherein the swing blade 3 is arc-shaped, and the plane formed by the line connecting the two sides of the swing blade 3 along its own width direction is the plane where the swing blade 3 is located. When the swing blade 3 is in the open position where the air outlet 14 is opened to the maximum, the swing blade 3 is arranged at intervals in the vertical direction below the mounting shell 12.

[0075] For ease of description, the angle is recorded as α. By limiting the angle α to 130°-135°, it is possible to prevent the swing blade 3 from contacting the mounting housing 12 when the air outlet 14 is in the open position with the largest opening.

[0076] The angle α can be any value between 130° and 135°, for example, the angle α can be any value among 130°, 131°, 132°, 133°, 134° and 135°. For example, the angle α is 134°.

[0077] It should be noted that the smaller the angle, the smaller the maximum opening of the air outlet 14; the larger the angle, the smaller the minimum distance between the swing blade 3 and the mounting shell 12 in the vertical direction when it is in the open position that maximizes the opening of the air outlet 14. By limiting the angle α, the minimum distance can be made as small as possible without contacting the mounting shell 12.

[0078] Specifically, the rear opening of the mounting shell 12 is formed, and a through hole is provided on the front side of the lower shell 18. The through hole is located below the rear opening of the mounting shell 12. By limiting the above-mentioned angle, one end of the rotating rod 22 passes through the rear opening of the mounting shell 12, and then passes through the through hole movably circumferentially around the output shaft 24 of the motor 21 and is connected to the swing blade 3.

[0079] For example, the arc portion 222 of the rotating rod 22 and the through hole are circumferentially connected for sliding around the output shaft 24 of the motor 21, with low friction resistance. The inner wall of the through hole can be used to support the arc portion 222, thereby improving the stability of the rotating rod 22 during rotation.

[0080] Exemplarily, the swing blade 3 rotates 90°, and can be switched from a closed position closing the air outlet 14 to an open position completely opening the air outlet 14.

[0081] The embodiment of the utility model provides a kind of electric water heater, including water heater shell 300 and above-mentioned warm air device 100, warm air device 100 is located below water heater shell 300.Electric water heater is generally installed in high place, air outlet 14 is disposed towards oblique downward, hot air is blown to oblique downward by air outlet 14, to facilitate indoor rapid temperature rise.

[0082] Exemplarily, air outlet 14 is located at the front side of water heater shell 300.It needs to be explained that front side refers to the side where the control panel of electric water heater is located.

[0083] In some embodiments, as shown in Figure 1 Water heater main body 200 is arranged in water heater shell 300, and water heater shell 300 has bottom opening, and upper shell 17 is connected with water heater shell 300 to block bottom opening.Such arrangement realizes that water heater main body 200 and warm air device 100 share upper shell 17, reduces the number of parts, and reduces cost.

[0084] In the specific content of the above specific embodiment, any inconsistent combination of technical features can be combined, in order to make the description simple, not all possible combinations of the above technical features are described, however, as long as the combination of these technical features does not exist contradictory, it should be considered that the scope of the present application is recorded.

[0085] The specific content of the above specific embodiment only expresses several implementation ways of the utility model, its description is more specific and detailed, but it can not be understood as the limitation of the scope of the utility model patent. It should be pointed out that, for ordinary skilled person in the art, without departing from the concept of the utility model, a number of variations and improvements can be made, which belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A heating device, characterized in that: include: A warm air housing, the warm air housing having an air duct (11), a rotatable wind wheel (5) being provided in the air duct (11), the air duct (11) being located downstream of the wind wheel (5) forming an air outlet channel, the warm air housing comprising an air outlet portion (181), the air outlet portion (181) forming the air outlet channel being circumferentially closed, and an end of the air outlet channel away from the wind wheel (5) forming an air outlet (14); an electric heater (4), the electric heater (4) being arranged in the air outlet (14); A swing blade (3) and a motor (21), wherein the motor (21) is located outside the air outlet channel, and an output shaft (24) of the motor (21) is transmission-connected to the swing blade (3), and the motor (21) can drive the swing blade (3) to swing to open and close the air outlet (14).

2. The heating device according to claim 1, characterized in that Two motors (21) are provided, and the swing blade (3) is provided between the two motors (21) along its own length direction.

3. The heating device according to claim 2, characterized in that The warm air housing comprises a lower housing (18) provided with the air outlet (181), an upper housing (17) located above the lower housing (18) and connected to the lower housing (18), and a mounting housing (12) with an opening at the top; the motor (21) is disposed in the mounting housing (12); The lower end of the installation shell (12) is connected to the lower shell (18), and the upper shell (17) is arranged outside the installation shell (12) to block the top opening of the installation shell (12).

4. The heating device according to claim 3, characterized in that The heating device (100) further comprises a rotating rod (22), one end of which is connected to the output shaft (24) of the motor (21), and the other end of which is movably passed through the heating housing and connected to the swing blade (3).

5. The heating device according to claim 4, characterized in that A mounting plate (16) is protruding from the inner bottom wall of the mounting housing (12), and the rotating rod (22) is axially limited between the inner side wall of the mounting housing (12) and the mounting plate (16) along the output shaft (24) of the motor (21).

6. The heating device according to claim 4, characterized in that The front end of the mounting shell (12) extends forward from the lower shell (18), so that when the swing blades (3) are in an open position where the air outlet (14) is opened to the maximum, the swing blades (3) are arranged at intervals below the mounting shell (12) in a vertical direction.

7. The heating device according to claim 6, characterized in that The rotating rod (22) comprises a straight portion (221) connected to the output shaft (24) of the motor (21), and an arc portion (222) connected to the swing blade (3), wherein the straight portion (221) and the arc portion (222) are connected to form the rotating rod (22) in a U shape; The angle formed by the straight portion (221) and the plane where the swing blade (3) is located is 130°-135°.

8. The heating device according to any one of claims 4 to 7, characterized in that: The rotating rod (22) is provided with a weight-reducing groove (223) extending along its extension direction, and a plurality of first reinforcing ribs (224) arranged at intervals along the extension direction of the rotating rod (22) are provided in the weight-reducing groove (223).

9. The heating device according to any one of claims 4 to 7, characterized in that: One of the output shaft (24) of the motor (21) and the rotating rod (22) is provided with a plug-in slot (226), and the other is provided with a plug-in protrusion, the plug-in protrusion is inserted into the plug-in slot (226), and the cross section of the plug-in slot (226) is non-circular.

10. Electric water heater, characterized in that The invention comprises a water heater housing (300) and a warm air device (100) according to any one of claims 1 to 9, wherein the warm air device (100) is installed at the bottom of the water heater housing (300).

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