Fan and water heater comprising same

Abstract

The utility model provides a fan and a water heater comprising the same, and relates to the field of gas water heaters. The draught fan comprises a volute and an adjusting assembly, an air inlet is formed in the volute, the adjusting assembly comprises an air inlet plate and a movable plate, the air inlet plate is installed on the volute and covers the air inlet, a first through hole is formed in the air inlet plate, and the movable plate is arranged to be capable of rotating relative to the air inlet plate so as to change the opening area of the first through hole. According to the gas water heater, the air inlet plate and the movable plate are arranged at the air inlet of the fan, the opening area of the first through hole formed in the air inlet plate is changed by rotating the movable plate, the purpose of adjusting the air inlet amount of the fan based on changes of external air pressure is achieved, and the requirements of the gas water heater under different working conditions are met. The adjusting assembly is simple in structure and convenient to operate, and has the advantages of being small in installation area and low in manufacturing cost under the condition that original functions of the draught fan are not affected.

Description

Technical Field

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

[0002] At present, gas water heaters are generally equipped with a combustion air fan under the combustion chamber to increase the heat load of the burner. The impeller speed of the fan used in some existing gas water heaters is constant and cannot be changed, and the size of the fan air inlet cannot be changed. This fan cannot adjust the fan air volume based on the change of external wind pressure according to the needs of different working conditions of the gas water heater. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defect in the prior art that the air inlet area of ​​the fan cannot be adjusted, resulting in the fan being unable to adjust the fan air volume based on the change of the external wind pressure according to the use requirements of the burner, and to provide a fan and a water heater containing the same.

[0004] The utility model solves the above technical problems through the following technical solutions:

[0005] The utility model provides a fan, which comprises a volute and an adjustment component, wherein an air inlet is provided on the volute;

[0006] The regulating assembly comprises an air inlet plate and a movable plate, wherein the air inlet plate is mounted on the volute and covers the air inlet, and a first through hole is formed on the air inlet plate;

[0007] The movable plate is configured to be rotatable relative to the air inlet plate to change the opening area of ​​the first through hole.

[0008] In this solution, an air inlet plate is fixedly installed at the air inlet of the fan, a first through hole is opened on the air inlet plate, and a movable plate that can rotate relative to the air inlet plate is arranged on the outer side of the air inlet plate. By rotating the movable plate, the opening area of ​​the first through hole is changed, so that the air volume entering the fan from the air inlet plate changes. This adjustment component has a simple structure and is easy to operate. It has the characteristics of small installation area and low manufacturing cost without affecting the original function of the fan.

[0009] Preferably, the adjustment assembly further comprises a driving member, an output end of the driving member is connected to the movable plate, and the driving member is configured to drive the movable plate to rotate.

[0010] In this solution, a driving member is provided to drive the movable plate to rotate relative to the air inlet plate to change the opening area of ​​the first through hole, thereby realizing the adjustment of the air volume of the fan inlet. When in use, the driving member is linked with the controller of the water heater. When the air volume of the fan inlet needs to be adjusted, the controller of the water heater can control the driving member to start quickly to drive the movable plate to rotate. When the air volume of the fan inlet does not need to be adjusted, the controller of the water heater can control the driving member to stop so that the movable plate stops rotating. The driving member is provided to facilitate quick response when the water heater needs to adjust the air volume of the fan inlet, thereby improving work efficiency.

[0011] Preferably, the driving member is a stepping motor, and the movable plate is mounted on a rotating shaft of the stepping motor.

[0012] Preferably, the movable plate is arranged on a side of the air inlet plate away from the air inlet.

[0013] In this solution, since the air inlet plate needs to be fixedly installed on the outside of the volute, the movable plate is arranged on the side of the air inlet plate away from the air inlet to facilitate the rotation of the movable plate, so as to change the opening area size of the first through hole.

[0014] Preferably, the movable plate is provided with a second through hole, and the movable plate is configured to change an overlapping area between the second through hole and the first through hole when rotating relative to the air inlet plate.

[0015] In this solution, a second through hole is provided on the movable plate, and the second through hole cooperates with the first through hole. When the first through hole and the second through hole completely overlap, the air intake volume of the fan is relatively large, and when the overlapping area of ​​the first through hole and the second through hole decreases, the air intake volume of the fan decreases.

[0016] Preferably, the air inlet plate is a disc structure, and there are a plurality of the first through holes, and the plurality of the first through holes are spaced and distributed along the central circumference of the air inlet plate;

[0017] And / or, the air inlet plate is a disc structure, and there are a plurality of first through holes, and the plurality of first through holes are distributed at intervals along the radial direction of the air inlet plate.

[0018] In this solution, a disc-structured air inlet plate is provided and a plurality of first through holes are provided on the air inlet plate. The plurality of first through holes are spaced apart along the central circumference of the air inlet plate or spaced apart along the radial direction of the air inlet plate, so that the external wind can enter the volute from the fan air inlet relatively evenly.

[0019] Preferably, the movable plate is provided with a plurality of second through holes which correspond one-to-one to the first through holes and have the same structure and size, and the spacing between two adjacent second through holes matches the spacing between two corresponding adjacent first through holes.

[0020] In this solution, by setting a plurality of second through holes corresponding to the first through holes one by one and having the same structural size on the movable plate, when the movable plate is rotated so that the second through holes completely overlap with the first through holes, the air intake volume of the fan reaches a maximum at this time; when the movable plate is rotated so that the overlapping area of ​​the second through holes and the first through holes gradually becomes smaller, the air intake volume of the fan will also gradually decrease.

[0021] Preferably, the fan further includes an impeller assembly and a drive motor, the impeller assembly is disposed in the volute, and the output end of the drive motor is drivingly connected to the impeller assembly.

[0022] In this solution, the impeller assembly is connected to the drive motor. The drive motor drives the impeller assembly to rotate so that the gas inside the volute flows faster, the gas pressure is reduced, and a pressure difference is formed with the external gas, so that the external gas can be sucked into the volute.

[0023] The utility model also provides a water heater, which comprises the fan as described above.

[0024] The positive and progressive effects of the utility model are:

[0025] In the utility model, an air inlet plate and a movable plate are arranged at the air inlet of the fan, and the opening area of ​​the first through hole provided on the air inlet plate is changed by rotating the movable plate, so as to achieve the purpose of adjusting the air volume of the fan based on the change of the external wind pressure, and meet the needs of the gas water heater under different working conditions. This adjustment component has a simple structure, convenient operation, and has the characteristics of small installation area and low manufacturing cost without affecting the original function of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the separated structure of the fan in the embodiment of the utility model.

[0027] Figure 2 It is a schematic diagram of the structure of the fan in the embodiment of the utility model.

[0028] Description of reference numerals:

[0029] Snail 1

[0030] Adjustment component 2

[0031] Air Inlet 11

[0032] Air inlet plate 21

[0033] Activity board 22

[0034] First through hole 211

[0035] Driving member 23

[0036] The second through hole 221 DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0038] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0039] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0040] See also Figure 1 and Figure 2 An embodiment of the utility model provides a fan, which includes a volute 1 and an adjusting component 2. An air inlet 11 is provided on a side panel of the volute 1. The adjusting component 2 is arranged on the outer side of the volute 1. The adjusting component 2 includes an air inlet plate 21 and a movable plate 22. The air inlet plate 21 is installed on the volute 1 and completely covers the air inlet 11. The movable plate 22 is arranged on a side of the air inlet plate 21 away from the air inlet 11. A first through hole 211 is provided on the air inlet plate 21. The movable plate 22 is arranged to be rotatable relative to the air inlet plate 21 to change the opening area of ​​the first through hole 211. By fixing an air inlet plate 21 at the air inlet 11 of the fan, a first through hole 211 is opened on the air inlet plate 21, and a movable plate 22 that can rotate relative to the air inlet plate 21 is arranged on the outer side of the air inlet plate 21. By rotating the movable plate 22, the opening area of ​​the first through hole 211 can be changed, so that the air volume entering the fan from the air inlet plate 21 changes. This air volume adjustment structure is simple and easy to operate. Without affecting the original function of the fan, it has the characteristics of small installation area and low manufacturing cost.

[0041] In some embodiments, the adjustment assembly 2 may also be disposed inside the volute 1 .

[0042] In this embodiment, the adjustment component 2 also includes a driving member 23, the output end of the driving member 23 is connected to the movable plate 22, and the driving member 23 is configured to drive the movable plate 22 to rotate. The driving member 23 is configured to drive the movable plate 22 to rotate relative to the air inlet plate 21 to change the opening area of ​​the first through hole 211, thereby achieving the adjustment of the air volume of the fan inlet. When in use, the driving member 23 is linked with the controller of the water heater. When the air volume of the fan inlet needs to be adjusted, the controller of the water heater can control the driving member 23 to start quickly to drive the movable plate to rotate. When the air volume of the fan inlet does not need to be adjusted, the controller of the water heater can control the driving member 23 to stop so that the movable plate 22 stops rotating. The driving member 23 is configured to facilitate quick response when the water heater needs to adjust the air volume of the fan inlet, thereby improving work efficiency.

[0043] Specifically, the output end of the driving member 23 is connected to the movable plate 22, and the driving member 23 can drive the movable plate 22 to rotate relative to the air inlet plate 21. By rotating the movable plate 22, the opening area of ​​the first through hole 211 set on the air inlet plate 21 can be changed. When the driving member 23 drives the movable plate 22 to rotate to an angle that does not completely block the first through hole 211, the fan normally intakes air, and the air intake volume at this time is relatively large. When the driving member 23 drives the movable plate 22 to rotate to a certain angle that blocks the first through hole 211, the air volume entering the fan becomes smaller than when the first through hole 211 is not blocked. In other words, the smaller the opening area of ​​the first through hole 211, the smaller the air volume entering the fan. The driving member 23 drives the movable plate 22, so that the air inlet plate 21 and the movable plate 22 jointly adjust the size of the fan air inlet 11, and the air volume entering the fan will also change due to the change in the size of the air inlet 11. Therefore, the above structure can adjust the size of the air inlet 11 of the fan according to different working conditions of the burner, thereby achieving the adjustment of the air volume of the fan.

[0044] In this embodiment, the driving member 23 is a stepper motor, the movable plate 22 is installed on the rotating shaft of the stepper motor, the air inlet plate 21 and the movable plate 22 are coaxially arranged, and a second through hole 221 is opened on the movable plate 22. The movable plate 22 is arranged to change the overlapping area of ​​the second through hole 221 and the first through hole 211 when rotating relative to the air inlet plate 21.

[0045] Specifically, the air inlet plate 21 and the movable plate 22 are sleeved on the rotating shaft of the stepper motor, the air inlet plate 21 is fixed on the outer side of the volute 1, the movable plate 22 cooperates with the rotating shaft of the stepper motor, and rotates relative to the air inlet plate 21 as the stepper motor rotates. The movable plate 22 is provided with a second through hole 221. When the first through hole 211 and the second through hole 221 completely overlap, that is, the first through hole 211 is not blocked, the opening area of ​​the first through hole 211 is large, and the air volume entering the fan is also large; when the overlapping area of ​​the first through hole 211 and the second through hole 221 decreases, that is, the first through hole 211 is blocked by the movable plate 22, the opening area of ​​the first through hole 211 decreases, and the air volume entering the fan is also reduced.

[0046] In this embodiment, combined with Figure 1 and Figure 2 To further explain, the air inlet plate 21 is a disc structure, and has a plurality of first through holes 211. The plurality of first through holes 211 are spaced apart along the central circumference of the air inlet plate 21, and are equally spaced apart along the radial direction of the air inlet plate 21. The plurality of first through holes 211 gradually increase in size along the radial direction of the air inlet plate 21. By providing a plurality of equally spaced first through holes 211 on the air inlet plate 21, the external wind can enter the interior of the volute 1 relatively evenly from the fan air inlet 11.

[0047] The movable plate 22 is provided with a plurality of second through holes 221 which correspond one-to-one with the first through holes 211 and have the same structure and size, and the spacing between two adjacent second through holes 221 matches the spacing between two corresponding adjacent first through holes 211. When the movable plate 22 is rotated so that the movable plate 22 is in a position where the second through holes 221 completely overlap with the first through holes 211, the air intake volume of the fan reaches a maximum at this time, and when the movable plate 22 is rotated so that the overlapping area of ​​the second through holes 221 and the first through holes 211 gradually decreases, the air intake volume of the fan will also gradually decrease.

[0048] In this embodiment, the fan further includes an impeller assembly (not shown in the figure) and a drive motor (not shown in the figure). The impeller assembly is arranged in the volute 1. The output end of the drive motor is in transmission connection with the impeller assembly. The impeller assembly is arranged to deliver the gas outside the volute 1 into the volute 1. Specifically, the impeller assembly includes an impeller shaft and blades. The blades are arranged on the impeller shaft. The drive motor drives the impeller shaft to rotate and then drives the blades to rotate, so that the gas inside the volute 1 flows faster, the gas pressure is reduced, and a pressure difference is formed with the external gas, so that the external gas can be sucked into the volute 1.

[0049] This embodiment also provides a water heater, which includes the fan as described above.

[0050] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0051] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A fan, characterized in that: The fan comprises a volute and an adjusting assembly, and an air inlet is provided on the volute; The regulating assembly comprises an air inlet plate and a movable plate, wherein the air inlet plate is mounted on the volute and covers the air inlet, and a first through hole is formed on the air inlet plate; The movable plate is configured to be rotatable relative to the air inlet plate to change the opening area of ​​the first through hole.

2. The fan according to claim 1, characterized in that: The adjustment assembly further comprises a driving member, an output end of which is connected to the movable plate, and the driving member is configured to drive the movable plate to rotate.

3. The fan according to claim 2, characterized in that: The driving member is a stepping motor, and the movable plate is mounted on the rotating shaft of the stepping motor.

4. The fan according to claim 1, characterized in that: The movable plate is arranged on a side of the air inlet plate away from the air inlet.

5. The fan according to claim 1, characterized in that: The movable plate is provided with a second through hole, and the movable plate is configured to change the overlapping area of ​​the second through hole and the first through hole when rotating relative to the air inlet plate.

6. The fan according to claim 5, characterized in that: The air inlet plate is a disc structure, and has a plurality of first through holes, which are spaced and distributed along the center circumference of the air inlet plate; And / or, the air inlet plate is a disc structure, and there are a plurality of first through holes, and the plurality of first through holes are distributed at intervals along the radial direction of the air inlet plate.

7. The fan according to claim 6, characterized in that: The movable plate is provided with a plurality of second through holes which correspond to the first through holes one by one and have the same structure and size, and the spacing between two adjacent second through holes matches the spacing between two corresponding adjacent first through holes.

8. The fan according to claim 1, characterized in that: The fan also includes an impeller assembly and a drive motor. The impeller assembly is arranged in the volute, and the output end of the drive motor is drivingly connected to the impeller assembly.

9. A water heater, characterized in that: The water heater comprises a fan as described in any one of claims 1-8.

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