Fan device and gas water heater

Abstract

The utility model relates to the technical field of gas water heaters, and discloses a fan device and a gas water heater. A volute assembly of the fan device comprises an upper cover body and a lower shell body, the upper cover body and the lower shell body are buckled to form a main body cavity, a wind wheel is rotationally arranged in the main body cavity, and the axis of the wind wheel extends in the vertical direction; the lower shell is provided with a first smoke inlet communicated with the main body cavity, the upper cover body is provided with a smoke outlet communicated with the main body cavity, and the axis of the smoke outlet and the axis of the wind wheel are arranged in parallel at an interval; the lower shell is integrally formed, an inner cavity of the lower shell is provided with an inclined guide face, the inclined guide face is located between the first smoke inlet and the smoke outlet, and the inclined guide face is obliquely arranged from the first smoke inlet to the smoke outlet and used for guiding airflow to flow from the first smoke inlet to the smoke outlet. According to the fan device, the functions of improving the compactness of the fan device and reducing the smoke exhaust resistance are achieved at the same time, and therefore the development requirement for miniaturization of the fan device is met.

Description

Technical Field

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

[0002] Gas water heaters are generally installed in balconies and kitchens. Since the total area of ​​kitchens and balconies in residential buildings is relatively low, and considering the efficiency of indoor space utilization, people have a demand for miniaturized gas water heater products.

[0003] The fan is an important component of the strong extraction gas water heater, such as Figure 1 As shown, most gas water heaters on the market use vertical fans 1, which limits the miniaturization of gas thermal volume dimensions. Furthermore, miniaturization of the fan device reduces the chamber space, which reduces smoke exhaust performance. Therefore, to meet design specifications, miniaturized fan devices require higher smoke exhaust performance. However, some existing fan devices, after miniaturization, have limitations in the assembly structure of the volute components, resulting in inadequate connections between components and reduced structural flatness, which in turn increases smoke exhaust resistance, further limiting the development of miniaturization of fan devices.

[0004] Therefore, there is an urgent need for a fan device and a gas water heater to solve the above problems. Utility Model Content

[0005] One of the technical problems solved by the present invention is to provide a fan device that can simultaneously improve the compactness of the fan device and reduce the smoke exhaust resistance, thereby meeting the development demand for miniaturization of the fan device.

[0006] The second technical problem solved by the present invention is to provide a gas water heater, which is conducive to improving the compactness of the whole machine and reducing the smoke exhaust resistance.

[0007] The first technical problem mentioned above is solved by the following technical solution:

[0008] A fan device, comprising:

[0009] wind wheel;

[0010] The volute assembly includes an upper cover body and a lower shell body that are sealed to each other, the upper cover body and the lower shell body are buckled together to form a main body cavity, the wind wheel is rotatably arranged in the main body cavity, and the axis of the wind wheel extends in a vertical direction; the lower shell body is provided with a first smoke inlet connected to the main body cavity, and the upper cover body is provided with a smoke outlet connected to the main body cavity, and the axis of the smoke outlet is parallel to the axis of the wind wheel and is spaced apart; the lower shell body is integrally formed, and the inner cavity of the lower shell body has an inclined guide surface, which is located between the first smoke inlet and the smoke outlet, and the inclined guide surface is inclined from the first smoke inlet toward the smoke outlet, and is used to guide the airflow from the first smoke inlet to the smoke outlet.

[0011] Compared with the background technology, the fan device described in the utility model has the following beneficial effects:

[0012] The volute assembly of the present invention adopts a layout of a combination of an upper cover and a lower shell, so that most of the space of the main cavity is enclosed by the lower shell. When exhausting smoke, the smoke mainly contacts the lower shell, and the lower shell is an integrally formed setting, which improves the structural flatness of the inner wall of the main cavity. The inner cavity of the lower shell is also provided with an inclined guide surface to strengthen the guidance of the airflow from the first smoke inlet to the smoke outlet, thereby effectively improving the permeability of the smoke flow and reducing the smoke exhaust resistance. In addition, because the axis of the wind wheel extends in the vertical direction, that is, the wind wheel is arranged horizontally in the main cavity, the compactness of the fan device is improved. Therefore, the fan device of the present invention achieves the functions of simultaneously improving the compactness of the fan device and reducing the smoke exhaust resistance, thereby meeting the development demand of the miniaturization of the fan device.

[0013] In one embodiment, the inclined guide surface is a single plane or a multi-fold plane or a continuous arc surface.

[0014] In one embodiment, a riveted flanging structure is provided between the edge of the upper cover and the edge of the lower shell, and the upper cover and the lower shell are sealed by the riveted flanging structure.

[0015] The riveted flange structure includes a first flange and a second flange that fit together, the first flange being formed by bending the edge of the upper cover, and the second flange being formed by bending the edge of the lower shell;

[0016] One end of the first flange is bent to form a third flange, and the third flange and the first flange are clamped and riveted together to the second flange, or one end of the second flange is bent to form a third flange, and the third flange and the second flange are clamped and riveted together to the first flange.

[0017] In one embodiment, the widths of the first flange and the second flange on the side close to the smoke outlet are greater than the widths of the first flange and the second flange on the side away from the smoke outlet.

[0018] In one embodiment, the width of the third flange is not less than one third of the width of the second flange.

[0019] In one embodiment, the fan device is further provided with a smoke outlet pipe, and a mounting flange extending away from the lower shell is provided around the smoke outlet, and the smoke outlet pipe is sleeved and fixed on the outer side of the mounting flange.

[0020] In one embodiment, a motor and a cooling fan are further included, the upper cover is provided with a mounting through hole, the output shaft of the motor is passed through the mounting through hole and is connected to the wind wheel;

[0021] The cooling fan is connected to the output shaft of the motor and is located between the upper cover and the motor.

[0022] The second technical problem mentioned above is solved by the following technical solution:

[0023] A gas water heater comprises a smoke hood and a fan device as described in any of the above schemes, wherein the fan device is arranged on the smoke hood, and the smoke hood is provided with a second smoke inlet docking with and connected to the first smoke inlet.

[0024] Compared with the background technology, the gas water heater described in the utility model has the following beneficial effects:

[0025] The above-mentioned fan device is arranged above the smoke hood of the gas water heater of the utility model, which has a more compact structure and occupies less space. At the same time, the air tightness of the fan device is better, and the inner wall of the main cavity of the fan device is smoother, so that the smoke exhaust resistance of the fan device is smaller and the suction force is stronger, which is beneficial to improving the combustion condition of the gas water heater.

[0026] In one embodiment, one of the side of the smoke hood close to the fan device and the side of the lower shell close to the smoke hood is provided with a positioning protrusion, and the other is provided with a positioning groove, and the positioning protrusion can be placed in the positioning groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0028] Figure 1 is a schematic diagram of the fan equipment provided in the background technology;

[0029] Figure 2 This is an exploded schematic diagram of a fan device provided in a specific embodiment of the present utility model;

[0030] Figure 3 It is a cross-sectional view of a fan device and a smoke hood provided in a specific embodiment of the present utility model;

[0031] Figure 4 It is a schematic diagram of the lower housing of the fan device provided in a specific embodiment of the present utility model;

[0032] Figure 5 yes Figure 3 A local enlarged schematic diagram of point A in the middle.

[0033] Description of labels:

[0034] 1. Vertical fan;

[0035] 110, wind wheel; 120, motor; 130, cooling fan; 140, mounting nut; 150, retaining ring; 160, bracket;

[0036] 200, volute assembly; 201, main body cavity; 210, upper cover; 211, smoke outlet; 212, first flange; 213, third flange; 214, mounting flange; 215, mounting through hole; 220, lower shell; 221, first smoke inlet; 222, inclined guide surface; 223, second flange; 224, positioning protrusion;

[0037] 300, smoke outlet pipe;

[0038] 10. Smoke hood; 11. Second smoke inlet. DETAILED DESCRIPTION

[0039] 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.

[0040] 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.

[0041] 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.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0043] like Figure 2-Figure 5 As shown, this embodiment provides a fan device, which includes a wind wheel 110 and a volute assembly 200. The volute assembly 200 includes an upper cover 210 and a lower shell 220. The upper cover 210 and the lower shell 220 are buckled together to form a main cavity 201. The wind wheel 110 is rotatably arranged in the main cavity 201, and the axis of the wind wheel 110 extends in the vertical direction; the lower shell 220 is provided with a first smoke inlet 221 connected to the main cavity 201, and the upper cover 210 is provided with a The smoke outlet 211 is connected to the main cavity 201, and the axis of the smoke outlet 211 is parallel to the axis of the wind wheel 110 and is spaced apart. The lower shell 220 is integrally formed, and the inner cavity of the lower shell 220 has an inclined guide surface 222. The inclined guide surface 222 is located between the first smoke inlet 221 and the smoke outlet 211. The inclined guide surface 222 is inclined from the first smoke inlet 221 toward the smoke outlet 211, and is used to guide the airflow from the first smoke inlet 221 to the smoke outlet 211.

[0044] By adopting a layout combining an upper cover 210 and a lower shell 220, most of the space of the main cavity 201 is enclosed by the lower shell 220. When exhausting smoke, the smoke mainly contacts the lower shell 220. The lower shell 220 is an integrally formed setting, which improves the structural flatness of the inner wall of the main cavity 201. The inner cavity of the lower shell 220 is also provided with an inclined guide surface 222 to strengthen the guidance of the airflow from the first smoke inlet 221 to the smoke outlet 211, thereby effectively improving the permeability of the smoke flow and reducing the smoke exhaust resistance. In addition, since the axis of the wind wheel 110 extends in the vertical direction, that is, the wind wheel 110 is arranged horizontally in the main cavity 201, the compactness of the fan device is improved. Therefore, the fan device of the utility model achieves the functions of simultaneously improving the compactness of the fan device and reducing the smoke exhaust resistance, thereby meeting the development demand of miniaturization of the fan device.

[0045] Specifically, the inclined guide surface 222 can be a single plane, multiple planes, or a continuous arc-shaped curved surface, thereby achieving better guidance and redirection of the smoke. For example, parameters such as the angle between the single plane and the horizontal plane, the angle between adjacent planes in the multiple planes, and the curvature of the arc-shaped curved surface can be configured by those skilled in the art based on analysis of smoke flow patterns and are not specifically limited herein.

[0046] Optionally, the integrally arranged lower shell 220 can be formed by integral stretching of sheet metal or by casting, and is preferably formed by integral stretching of sheet metal.

[0047] Furthermore, a riveted flange structure is provided between the edge of the upper cover 210 and the edge of the lower shell 220, sealingly connecting the upper cover 210 and the lower shell 220. This riveted flange structure also seals the connection between the lower shell 220 and the upper cover 210, effectively preventing smoke leakage between the lower shell 220 and the upper cover 210. This improves the airtightness between the lower shell 220 and the upper cover 210, thereby ensuring the suction force of the fan device and promoting the combustion conditions of the gas water heater.

[0048] Specifically, the riveted flange structure includes a first flange 212 and a second flange 223 that fit together. The first flange 212 is formed by bending the edge of the upper cover 210, and the second flange 223 is formed by bending the edge of the lower shell 220; one end of the first flange 212 is bent to form a third flange 213, and the third flange 213 and the first flange 212 jointly clamp and rivet the second flange 223, that is, the lower shell 220 and the upper cover 210 are sealed by riveting the second flange 223 between the first flange 212 and the third flange 213. The above structure effectively increases the contact area between the lower shell 220 and the upper cover 210, and thus the sealing effect is better after riveting.

[0049] In other embodiments, a third flange 213 can also be bent at one end of the second flange 223, and the third flange 213 and the second flange 223 together clamp the first flange 212, which can also achieve the sealed connection between the lower shell 220 and the upper cover 210.

[0050] Specifically, to improve the sealing and reliability of the riveting connection between the upper cover 210 and the lower shell 220, the width of the third flange 213 is not less than one-third of the width of the second flange 223, which ensures that the third flange 213 has an effective overlapping area with the second flange 223, improving the riveting reliability.

[0051] Further, to ensure the air tightness at the smoke outlet 211, the width of the first flange 212 and the second flange 223 near the side of the smoke outlet 211 is greater than the width of the first flange 212 and the second flange 223 away from the side of the smoke outlet 211. In this way, the effective overlapping area between the first flange 212 and the second flange 223 can be increased, improving the sealing reliability.

[0052] Preferably, the fan device is also provided with a smoke outlet pipe 300, the axis of the smoke outlet pipe 300 extends in the vertical direction, that is, after the smoke gas passes through the smoke outlet 211 with a vertical axis, it continues to pass through the smoke outlet pipe 300 with a vertical axis, so that the smoke gas continues to flow out of the fan device without reversing, making the smoke gas flow out more smoothly.

[0053] Specifically, the smoke outlet 211 is circumferentially provided with a mounting flange 214 extending away from the lower shell 220, and the smoke outlet pipe 300 is sleeved and fixed to the outside of the mounting flange 214. The above is conducive to improving the sealing of the connection between the smoke outlet 211 of the upper cover 210 and the smoke outlet pipe 300, effectively preventing smoke gas from leaking from this place.

[0054] In this embodiment, the fan device also includes a motor 120, and the upper cover 210 is provided with a mounting hole 215, and the output shaft of the motor 120 is inserted into the mounting hole 215 and connected with the fan wheel 110, for driving the fan wheel 110 in the main cavity 201 to rotate. Further, the motor 120 is installed above the upper cover 210 through a bracket 160, and the fan wheel 110 is connected with the output shaft of the motor 120 through a mounting nut 140.

[0055] Preferably, the fan device also includes a cooling fan 130, which is connected with the output shaft of the motor 120 and located between the upper cover 210 and the motor 120, and when the motor 120 drives the fan wheel 110 to rotate, the cooling fan 130 rotates synchronously, for cooling the motor 120. Specifically, the cooling fan 130 is connected with the output shaft of the motor 120 through a snap spring 150.

[0056] This embodiment also discloses a gas water heater, comprising a hood 10 and a fan device as described in any of the above embodiments. The fan device is disposed on the hood 10, and the hood 10 is provided with a second smoke inlet 11 that interfaces with and communicates with the first smoke inlet 221. By disposing the fan device above the hood 10 of the gas water heater, the structure becomes more compact, occupying less space. Furthermore, the fan device has improved airtightness, and the inner wall of the main body cavity 201 of the fan device is smoother. Consequently, the fan device has lower exhaust resistance and stronger extraction force, which helps improve the combustion conditions of the gas water heater.

[0057] It is worth noting that, since the fan device adopts a horizontal arrangement of the wind wheel 110, the second air inlet of the fan device is closer to the lower opening of the smoke hood 10, that is, closer to the burner of the gas water heater, and thus the flow path of the flue gas is shorter and the wind resistance is smaller; at the same time, the fan device has a greater suction force on the flue gas, which is more conducive to ensuring the combustion of the burner. In addition, the fan device adopts a horizontal arrangement of the wind wheel 110, which can also make the volute assembly 200 more stably installed on the plane of the smoke hood 10, thereby improving the stability and reliability of the connection between the fan device and the smoke hood 10. The center of gravity of the motor 120, the output shaft of the motor 120, the wind wheel 110, the cooling fan 130 and other structures is more stable, and the dynamic balance is better, the rotation is more stable, the mechanical noise during operation is smaller, and it is more reliable, which is conducive to reducing the working noise and use safety of the gas water heater.

[0058] Furthermore, one of the two sides of the smoke hood 10 close to the fan device and the side of the lower shell 220 close to the smoke hood 10 is provided with a positioning protrusion 224, and the other is provided with a positioning groove, and the positioning protrusion 224 can be placed in the positioning groove. By providing the positioning protrusion 224 and the positioning groove, the positioning between the lower shell 220 and the smoke hood 10 is achieved. When the positioning protrusion 224 is placed in the positioning groove, the second smoke inlet 11 of the smoke hood 10 is inserted into the first smoke inlet 221 of the lower shell 220. At this time, the fan device and the smoke hood 10 can be connected by bolts. Optionally, the positioning protrusion 224 is provided on the lower shell 220, and the lower shell 220 is provided with multiple positioning protrusions 224 along the circumference of the first smoke inlet 221 to improve the reliability of positioning.

[0059] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0060] The specific contents of the above-mentioned specific embodiments only express several embodiments of the present invention. Although the description is relatively specific and detailed, it should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be based on the appended claims.

Claims

1. A fan device, characterized in that: include: wind wheel (110); The volute assembly (200) comprises an upper cover (210) and a lower shell (220) which are sealed and connected to each other. The upper cover (210) and the lower shell (220) are buckled together to form a main body cavity (201). The wind wheel (110) is rotatably arranged in the main body cavity (201), and the axis of the wind wheel (110) extends in a vertical direction. The lower shell (220) is provided with a first smoke inlet (221) communicating with the main body cavity (201), and the upper cover (210) is provided with a smoke outlet (211) communicating with the main body cavity (201). The axis of the smoke outlet (211) is arranged parallel to and spaced from the axis of the wind wheel (110); the lower shell (220) is integrally formed, and the inner cavity of the lower shell (220) has an inclined guide surface (222), the inclined guide surface (222) is located between the first smoke inlet (221) and the smoke outlet (211), and the inclined guide surface (222) is inclined from the first smoke inlet (221) toward the smoke outlet (211), and is used to guide airflow from the first smoke inlet (221) to the smoke outlet (211).

2. The fan device according to claim 1, characterized in that: The inclined guide surface (222) is a single plane or a multi-fold plane or a continuous arc surface.

3. The fan device according to claim 1, characterized in that: A riveted flanging structure is provided between the edge of the upper cover (210) and the edge of the lower shell (220), and the upper cover (210) and the lower shell (220) are sealed and connected via the riveted flanging structure.

4. The fan device according to claim 3, characterized in that: The riveted flange structure comprises a first flange (212) and a second flange (223) that fit together, wherein the first flange (212) is formed by bending the edge of the upper cover (210), and the second flange (223) is formed by bending the edge of the lower shell (220); One end of the first flange (212) is bent to form a third flange (213), and the third flange (213) and the first flange (212) are used together to clamp and rivet the second flange (223); or, one end of the second flange (223) is bent to form a third flange (213), and the third flange (213) and the second flange (223) are used together to clamp and rivet the first flange (212).

5. The fan device according to claim 4, characterized in that: The widths of the first flange (212) and the second flange (223) on the side close to the smoke outlet (211) are greater than the widths of the first flange (212) and the second flange (223) on the side away from the smoke outlet (211).

6. The fan device according to claim 4, characterized in that: The width of the third flange (213) is not less than one third of the width of the second flange (223).

7. The fan device according to claim 1, characterized in that: The fan device further comprises a smoke outlet pipe (300); a mounting flange (214) extending away from the lower shell (220) is provided in the circumference of the smoke outlet (211); and the smoke outlet pipe (300) is sleeved and fixed on the mounting flange (214).

8. The fan device according to claim 1, characterized in that: It also includes a motor (120) and a cooling fan (130); the upper cover (210) is provided with a mounting through hole (215); the output shaft of the motor (120) is passed through the mounting through hole (215) and is connected to the wind wheel (110); The cooling fan (130) is connected to the output shaft of the motor (120) and is located between the upper cover (210) and the motor (120).

9. Gas water heater, characterized in that The invention comprises a smoke hood (10) and a fan device according to any one of claims 1 to 8, wherein the fan device is arranged on the smoke hood (10), and the smoke hood (10) is provided with a second smoke inlet (11) docked with and connected to the first smoke inlet (221).

10. The gas water heater according to claim 9, characterized in that: One of the side of the smoke hood (10) close to the fan device and the side of the lower shell (220) close to the smoke hood (10) is provided with a positioning protrusion (224), and the other is provided with a positioning groove, and the positioning protrusion (224) can be placed in the positioning groove.

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