Fan and gas water heater comprising same

Abstract

The fan comprises a volute and a motor arranged in the volute, the volute is provided with an air inlet and an air outlet, a circulation channel is formed from the air inlet to the air outlet, the fan is applied to a balanced type gas water heater, and a plurality of heat dissipation protruding points are arranged on the outer surface, facing the circulation channel, of the motor. The plurality of heat dissipation salient points protrude out of the outer surface of the motor along the radial direction of the motor. The contact area between the outer surface of the motor and circulating air in the circulating channel can be increased by arranging the heat dissipation salient points which transversely protrude out of the outer surface of the motor, so that the heat dissipation efficiency of the motor is improved, the heat dissipation requirement can be met in a high-temperature-rise environment of the balanced gas water heater, and the motor is prevented from being damaged due to overheating.

Description

Technical Field

[0001] This utility model relates to the field of gas water heaters, and in particular to a fan and a gas water heater including the fan. Background Technology

[0002] Due to its closed combustion structure, the combustion chamber and exhaust system of a balanced flue gas water heater require air exchange with the outside environment through a flue. However, during prolonged high-load operation, the heat generated by combustion easily diffuses into the machine body through heat conduction and radiation. In addition, the compact internal space makes it difficult for heat to dissipate quickly, resulting in a significant increase in the internal temperature of the entire unit.

[0003] Excessive internal temperature rise directly affects the operating environment of the motor installed near the combustion chamber. As the core component driving the fan, the motor, when exposed to a high-temperature environment for a long time, will experience accelerated aging of the winding insulation material, demagnetization of the magnets, and failure of bearing lubrication, which can lead to motor overheating or even burnout, severely reducing the reliability and service life of the water heater.

[0004] In existing technologies, heat dissipation for motors is mostly achieved by using natural convection to remove heat from the motor. However, due to the limited contact area between the natural air intake and the motor, the heat dissipation efficiency is insufficient. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the defect of excessive internal temperature rise in the existing balanced gas water heater, which leads to insufficient heat dissipation of the motor and easy burnout, and to provide a fan and a gas water heater including the fan.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution:

[0007] This utility model discloses a fan, which includes a volute and a motor disposed inside the volute. The volute has an air inlet and an air outlet, and the air inlet to the air outlet forms a flow channel. The fan is applied to a balanced gas water heater. The motor has a plurality of heat dissipation protrusions on its outer surface facing the flow channel. The plurality of heat dissipation protrusions protrude from the outer surface of the motor in the radial direction of the motor.

[0008] In this solution, by setting heat dissipation protrusions that protrude laterally from the outer surface of the motor, the contact area between the outer surface of the motor and the air flowing in the circulation channel can be increased, thereby improving the heat dissipation efficiency of the motor. This satisfies the heat dissipation needs in the high-temperature environment of the balanced gas water heater and prevents the motor from overheating and being damaged.

[0009] Preferably, the air inlet faces the heat dissipation protrusion.

[0010] In this design, the air inlet is oriented towards the heat dissipation protrusion, which allows the air inlet to blow directly onto the heat dissipation protrusion, thereby further improving heat dissipation efficiency.

[0011] Preferably, a plurality of the heat dissipation protrusions are arranged along the airflow direction of the air inlet.

[0012] In this design, arranging the heat dissipation protrusions along the airflow direction of the air inlet increases the time that the incoming air blows onto the heat dissipation protrusions, thereby further increasing the heat dissipation efficiency.

[0013] Preferably, the heat dissipation protrusions are arranged in multiple rows in a ring around the outer surface of the motor.

[0014] In this design, the multiple rows of rings can further increase the heat dissipation area, thereby further improving the heat dissipation efficiency.

[0015] Preferably, the outer surface of the heat dissipation protrusion is a smooth curved surface.

[0016] In this design, the outer surface of the heat dissipation protrusion is a smooth curved surface, which reduces the change in airflow direction when the air flows over the surface of the heat dissipation protrusion, thereby reducing the generation of turbulence and improving the stability of airflow in the circulation channel.

[0017] Preferably, the volute has a mounting hole, the radial length of the motor is less than the radial length of the mounting hole, the motor extends at least partially into the mounting hole, and the air inlet is formed between the motor and the edge of the mounting hole, the air inlet being annular.

[0018] In this design, the motor is embedded in the volute, creating an annular air intake between the motor and the volute. This annular intake allows air to enter from all sides, avoiding insufficient airflow or turbulence caused by centralized air supply at a single point, thus improving overall heat dissipation uniformity. Simultaneously, because the gap between the motor and the volute forms the air intake, it can be positioned facing the heat dissipation protrusions, allowing the air to blow directly onto them, further enhancing heat dissipation efficiency.

[0019] Preferably, the motor is coaxial with the mounting hole.

[0020] In this design, the coaxial arrangement allows for uniform air intake from all directions through the annular air inlet, improving the stability of airflow.

[0021] Preferably, the motor has a connecting portion extending radially therefrom, the connecting portion extending to the outer wall of the volute, and the connecting portion is detachably connected to the volute.

[0022] In this solution, the above structure allows for a detachable connection between the motor and the volute, facilitating inspection and maintenance.

[0023] Preferably, there are multiple connecting parts, and the multiple connecting parts are arranged at intervals along the circumference of the motor.

[0024] In this design, multiple connecting parts are used to make the connection more stable.

[0025] This utility model also discloses a gas water heater, which includes a fan as described in any of the preceding claims.

[0026] In this solution, by setting heat dissipation protrusions that protrude laterally from the outer surface of the motor, the contact area between the outer surface of the motor and the air flowing in the circulation channel can be increased, thereby improving the heat dissipation efficiency of the motor. This satisfies the heat dissipation needs in the high-temperature environment of the balanced gas water heater and prevents the motor from overheating and being damaged.

[0027] The positive and progressive effects of this utility model are as follows:

[0028] The fan and gas water heater including the present invention can increase the contact area between the outer surface of the motor and the air flowing in the circulation channel by setting heat dissipation protrusions that protrude laterally from the outer surface of the motor, thereby improving the heat dissipation efficiency of the motor. In the high-temperature environment of the balanced gas water heater, the heat dissipation needs can be met and the motor can be prevented from overheating and being damaged. Attached Figure Description

[0029] Figure 1 This is a perspective view of the fan according to an embodiment of the present utility model.

[0030] Figure 2 This is a perspective view of the motor according to an embodiment of the present utility model.

[0031] Figure 3 for Figure 2 A magnified view of a portion of region A in the middle.

[0032] Figure 4 This is a perspective view of the volute casing according to an embodiment of the present utility model.

[0033] Figure 5 This is a cross-sectional view of the fan according to an embodiment of the present utility model.

[0034] Explanation of reference numerals in the attached figures:

[0035] Fan 1000

[0036] Snail shell 1

[0037] Air intake 101

[0038] Air outlet 102

[0039] Distribution Channel 103

[0040] Mounting hole 104

[0041] Motor 2

[0042] Heat dissipation bump 201

[0043] Connecting part 202

[0044] Connection hole 2021

[0045] Impeller 3

[0046] Airflow direction 4 Detailed Implementation

[0047] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0048] like Figures 1-5 As shown, this embodiment provides a fan 1000, which is applied to a balanced gas water heater. The fan 1000 includes a volute 1, a motor 2 disposed within the volute 1, and an impeller 3. The impeller 3 is connected to the motor 2, and the motor 2 drives the impeller 3 to rotate. The volute 1 has an air inlet 101 and an air outlet 102, forming a flow channel 103 from the air inlet 101 to the air outlet 102. The rotation of the impeller 3 creates a negative pressure that draws in air from the air inlet 101 and outputs air from the air outlet 102. The motor 2 has a plurality of heat dissipation protrusions 201 on its outer surface facing the flow channel 103, and the plurality of heat dissipation protrusions 201 protrude from the outer surface of the motor 2 in the radial direction.

[0049] Thus, by setting heat dissipation protrusions 201 that protrude laterally from the outer surface of the motor 2, the contact area between the outer surface of the motor 2 and the air flowing in the circulation channel 103 can be increased, thereby improving the heat dissipation efficiency of the motor 2. In the high-temperature environment of the balanced gas water heater, the heat dissipation needs can be met, and the motor 2 can be prevented from overheating and being damaged.

[0050] In this embodiment, as Figure 5 As shown, several heat dissipation protrusions 201 are arranged along the airflow direction 4 of the air inlet 101. Arranging the heat dissipation protrusions 201 along the airflow direction 4 of the air inlet 101 can increase the time that the incoming air blows onto the heat dissipation protrusions 201, thereby further increasing the heat dissipation efficiency.

[0051] Furthermore, such as Figure 2 and Figure 5 As shown, several heat dissipation protrusions 201 are arranged in multiple rows in a ring around the outer surface of the motor 2. This multiple-row ring arrangement further increases the heat dissipation area, thereby further improving heat dissipation efficiency. Preferably, the multiple rows of heat dissipation protrusions 201 are arranged along the direction of airflow from the air inlet 101. For example, Figure 2 The six rows of heat dissipation protrusions 201 shown are for illustrative purposes only. The number of rows of heat dissipation protrusions 201 can be adjusted according to actual needs and is not limited here.

[0052] Furthermore, such as Figure 3 As shown, the outer surface of the heat dissipation protrusion 201 is a smooth curved surface. This smooth curved surface reduces changes in airflow direction as air flows over it, thus reducing turbulence and improving the stability of airflow in the flow channel 103. A smooth curved surface refers to a surface with continuous curvature, without abrupt changes or sharp angles. The smooth curved surface structure reduces resistance at the airflow boundary in the flow channel 103 and makes it less prone to the adhesion of particulate contaminants.

[0053] Specifically, the air inlet 101 faces the heat dissipation protrusion 201. The air inlet 101 facing the heat dissipation protrusion 201 means that the air intake direction of the air inlet 101 is directly opposite the heat dissipation protrusion 201.

[0054] Thus, the air inlet 101 is positioned facing the heat dissipation protrusion 201, which allows the air inlet 101 to blow air directly onto the heat dissipation protrusion 201, thereby further improving the heat dissipation efficiency.

[0055] In this embodiment, as Figure 4 As shown, a mounting hole 104 is provided on the volute 1. The radial length of the motor 2 is less than the radial length of the mounting hole 104. The motor 2 extends at least partially into the mounting hole 104. The aforementioned air inlet 101 is formed between the motor 2 and the edge of the mounting hole 104. Figure 1 As shown, the air inlet 101 is annular.

[0056] Thus, by embedding the motor 2 into the volute 1, an annular air inlet 101 is formed between the motor 2 and the volute 1. This annular air intake allows air to enter from all sides, avoiding insufficient local airflow or turbulence caused by centralized air supply at a single point, thereby improving the overall heat dissipation balance. Simultaneously, since the gap between the motor 2 and the volute 1 forms the air inlet 101, it can be positioned facing the heat dissipation protrusion 201, further improving heat dissipation efficiency by ensuring the air inlet 101 blows directly onto the heat dissipation protrusion 201.

[0057] Furthermore, the motor 2 is coaxial with the mounting hole 104. This coaxial arrangement allows for uniform air intake from all directions through the annular air inlet 101, improving the stability of airflow.

[0058] Specifically, such as Figure 1 As shown, the motor 2 has a connecting part 202 extending in its radial direction. The connecting part 202 extends to the outer wall of the volute 1 and is detachably connected to the volute 1.

[0059] Thus, the above structure allows for a detachable connection between the motor 2 and the volute 1, facilitating inspection and maintenance.

[0060] Furthermore, there are multiple connecting portions 202, and these multiple connecting portions 202 are arranged at intervals along the circumference of the motor 2. For example... Figure 1and Figure 2 As shown in the figure, in this embodiment, the three connecting parts 202 are only for illustrative purposes. Those skilled in the art can make adjustments according to actual needs, and no limitation is made here.

[0061] Thus, providing multiple connecting parts 202 makes the connection more stable.

[0062] Furthermore, such as Figure 1 and Figure 2 As shown, the included angle between any two adjacent connecting parts 202 is 120 degrees. That is, the three connecting parts 202 are arranged in an equilateral triangle. Since an equilateral triangle has higher stability, it can better achieve the stability of the motor 2 installation.

[0063] Furthermore, each connecting part 202 is provided with a connecting hole 2021, and a corresponding connecting hole 2021 is also provided on the outer wall of the volute 1. The connecting part 202 is connected to the outer wall of the volute 1 by a screw passing through the connecting hole 2021.

[0064] Furthermore, each connecting part 202 is provided with multiple connecting holes 2021, which are arranged from farthest to near the axis of the motor 2. These multiple connecting holes 2021 can accommodate volutes 1 of different sizes, thus broadening the adaptability of the motor 2. For example... Figure 2 As shown, each connecting part 202 has two connecting holes 2021. The two connecting holes 2021 are only for illustrative purposes, and the specific number can be adjusted according to actual needs. They are not limited here.

[0065] This embodiment also provides a gas water heater, which includes the fan 1000 as described above.

[0066] Thus, by setting heat dissipation protrusions 201 that protrude laterally from the outer surface of the motor 2, the contact area between the outer surface of the motor 2 and the air flowing in the circulation channel 103 can be increased, thereby improving the heat dissipation efficiency of the motor 2. In the high-temperature environment of the balanced gas water heater, the heat dissipation needs can be met, and the motor 2 can be prevented from overheating and being damaged.

[0067] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A fan, the fan comprising a volute and a motor disposed within the volute, the volute having an air inlet and an air outlet, the air inlet to the air outlet forming a flow channel, characterized in that, The fan is used in a balanced gas water heater. The motor has several heat dissipation protrusions on its outer surface facing the flow channel. The heat dissipation protrusions protrude from the outer surface of the motor in the radial direction.

2. The fan as described in claim 1, characterized in that, The air inlet faces the heat dissipation protrusion.

3. The fan as described in claim 1, characterized in that, Several of the heat dissipation protrusions are arranged along the airflow direction of the air inlet.

4. The fan as described in claim 1, characterized in that, The heat dissipation bumps are arranged in multiple rows in a ring around the outer surface of the motor.

5. The fan as described in claim 1, characterized in that, The outer surface of the heat dissipation bump is a smooth curved surface.

6. The fan as described in claim 2, characterized in that, The volute has a mounting hole, the radial length of the motor is less than the radial length of the mounting hole, the motor extends at least partially into the mounting hole, and the air inlet is formed between the motor and the edge of the mounting hole. The air inlet is annular.

7. The fan as described in claim 6, characterized in that, The motor is coaxial with the mounting hole.

8. The fan as described in claim 1, characterized in that, The motor has a connecting part extending radially therefrom, the connecting part extending to the outer wall of the volute, and the connecting part is detachably connected to the volute.

9. The fan as described in claim 8, characterized in that, There are multiple connecting parts, and the multiple connecting parts are arranged at intervals along the circumference of the motor.

10. A gas-fired water heater, characterized in that, It includes the wind turbine as described in any one of claims 1-9.

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