Fan air outlet volume adjusting structure and fuel oil warmer with fan air outlet volume adjusting structure

Abstract

The utility model provides a fan air volume adjusting structure and a fuel oil warmer with the fan air volume adjusting structure, the fan air volume adjusting structure comprises a fan assembly, the fan assembly comprises a volute and an end plate, and the end plate is fixed on the side wall of the volute and used for sealing the volute; the draught fan air outlet volume adjusting structure further comprises an air baffle and an adjusting plate. The wind shield is arranged in an air outlet channel of the volute, one end of the wind shield is rotationally connected with the volute located on one side of the air outlet channel, and the other end of the wind shield forms a free end. The adjusting plate is movably and adjustably connected to the end plate, and one end of the adjusting plate is used for abutting against one side of the free end of the wind shield to limit the rotation range of the wind shield; the fuel oil heater comprises the draught fan air outlet amount adjusting structure. When air is supplied to the combustor in the fuel oil warmer, the air supply amount of the fan assembly can be adjusted, and therefore the sufficiency of fuel oil combustion in the combustor can be guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of fuel-fired heater technology, and more specifically, to a fan airflow adjustment structure and a fuel-fired heater having the same. Background Technology

[0002] A fuel-fired heater is a device that uses fuel combustion to provide warmth. Due to its high heating efficiency and good heating effect, fuel-fired heaters are widely used in cold regions. Currently, Chinese Patent Publication No. CN216409094U discloses a fuel-fired heater with blue flame combustion. In this heater's structure, a centrifugal combustion-supporting fan provides air for combustion. However, in the aforementioned existing fuel-fired heaters, the airflow of the centrifugal combustion-supporting fan cannot be adjusted. The airflow directly affects the completeness of fuel combustion in the combustion device. Therefore, if the fuel injection rate changes and the airflow of the centrifugal combustion-supporting fan cannot be adjusted, the fuel in the combustion device may not burn completely, which is detrimental to fuel conservation and environmental protection. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a fan air volume adjustment structure and a fuel oil heater having the same structure. When the fan assembly supplies air to the burner in the fuel oil heater, the air volume of the fan assembly can be adjusted, thereby ensuring the complete combustion of fuel oil in the burner.

[0004] This utility model provides a fan airflow adjustment structure, including a fan assembly, which includes a volute and an end plate fixed to the side wall of the volute for sealing the volute; the fan airflow adjustment structure also includes a baffle plate and an adjustment plate; the baffle plate is disposed in the air outlet channel of the volute, one end of the baffle plate is rotatably connected to the volute located on one side of the air outlet channel, and the other end of the baffle plate forms a free end; the adjustment plate is movably and adjustablely connected to the end plate, and one end of the adjustment plate is used to abut against one side of the free end of the baffle plate to limit the rotation range of the baffle plate.

[0005] By adopting the above-described structure, when the aforementioned fan airflow adjustment structure is applied to a fuel-fired heater, the airflow of the fan assembly can be adjusted according to the combustion status of the burner in the fuel-fired heater. That is, the airflow of the fan assembly to the burner can be adjusted to meet the requirement of complete combustion of fuel in the burner, thereby ensuring the complete combustion of fuel in the burner, achieving the goals of fuel saving and environmental protection.

[0006] In one possible implementation, a support shaft is fixed on the volute located on one side of the air outlet duct, and a curled part is provided on one end of the baffle plate. The curled part is sleeved on the support shaft and rotatably connected to the support shaft.

[0007] In one possible implementation, a limiting post is fixed on the volute located on the other side of the air outlet duct. The limiting post is used to abut against the other side of the free end of the wind deflector to limit the minimum opening of the wind deflector.

[0008] In one possible implementation, the wind deflector is provided with at least one raised rib, which extends along the length of the wind deflector.

[0009] In one possible implementation, the wind deflector is provided with two raised ribs, which are spaced apart along the width direction of the wind deflector.

[0010] In one possible implementation, the rib is stamped on the windshield, and a groove is naturally formed on the back side of the rib.

[0011] In one possible implementation, the adjusting plate is disposed on the inner side of the end plate, and the end plate is provided with an elongated hole. The fan airflow adjustment structure also includes at least one bolt, the bolt's threaded portion of which moves through the elongated hole and is threadedly connected to the end plate, and the bolt's head abuts against the outer end face of the end plate. When the bolt is loosened, the bolt's threaded portion can move relative to the elongated hole to achieve adjustment of the adjusting plate's movement. When the bolt is tightened, the bolt is used to lock the adjusting plate and the end plate.

[0012] In one possible implementation, the fan airflow adjustment structure includes two bolts, which are spaced apart along the length of the elongated hole. The threaded portion of each bolt moves through the elongated hole and is threadedly connected to the end plate.

[0013] In one possible implementation, one end of the adjusting plate is bent to form a bent section, which abuts against one side of the free end of the wind deflector.

[0014] A fuel-fired heater includes a housing and the aforementioned fan airflow adjustment structure. The fan assembly is fixed to the housing, and the air outlet of the volute is connected to the air inlet of the burner fixed to the housing. Attached Figure Description

[0015] Figure 1 A three-dimensional structural diagram of a fuel-fired heater;

[0016] Figure 2 for Figure 1 A magnified structural diagram of point A in the middle;

[0017] Figure 3 A schematic diagram of the first three-dimensional structure of a fuel-fired heater after the end plate has been removed.

[0018] Figure 4 for Figure 3 A magnified structural diagram of point B in the middle;

[0019] Figure 5 A schematic diagram of the second three-dimensional structure of a fuel-fired heater after the end plate has been removed;

[0020] Figure 6 for Figure 5 A magnified structural diagram of point C. Detailed Implementation

[0021] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0022] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0023] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] See Figure 1-6As shown in the figure, this application discloses a fan airflow adjustment structure, including a fan assembly. The fan assembly includes a volute 1 and an end plate 2 fixed to the side wall of the volute 1 and used to close the volute 1. The fan airflow adjustment structure also includes a baffle plate 3 and an adjusting plate 4. The baffle plate 3 is disposed in the air outlet channel 11 of the volute 1. One end of the baffle plate 3 is rotatably connected to the volute 1 located on one side of the air outlet channel 11, and the other end of the baffle plate 3 forms a free end. The adjusting plate 4 is movably and adjustablely connected to the end plate 2. One end of the adjusting plate 4 is used to abut against one side of the free end of the baffle plate 3 to limit the rotation range of the baffle plate 3.

[0026] A support shaft 12 is fixed on the volute 1 located on one side of the air outlet duct 11. A curled part 31 is provided on one end of the baffle plate 3. The curled part 31 is sleeved on the support shaft 12 and rotatably connected to the support shaft 12. With this structure, under the cooperation of the curled part and the support shaft, one end of the baffle plate can be reliably rotatably connected to the volute located on one side of the air outlet duct. The support shaft can be fixed to the volute by riveting, screwing, or welding. The aforementioned curled part is formed by curling one end of the baffle plate. The curled part is connected to the baffle plate as a whole, which has the advantages of good integrity and high structural strength between the curled part and the baffle plate.

[0027] A limiting post 13 is fixed on the volute 1 on the other side of the air outlet duct 11. The limiting post 13 is used to abut against the other side of the free end of the baffle 3 to limit the minimum opening of the baffle 3. With this structure, under the action of the limiting post, when the adjusting plate pushes the baffle to rotate so that the air volume of the fan assembly decreases, the other side of the free end of the baffle can finally abut against the limiting post to limit the minimum opening of the baffle, so as to avoid the situation where the air outlet duct is completely closed by the baffle, and to ensure that the fan assembly can provide the minimum air volume to cause the burner in the oil heater to burn.

[0028] At least one rib 32 is provided on the wind deflector 3, and the rib 32 extends along the length direction of the wind deflector 3. By providing the rib on the wind deflector, the deformation resistance of the wind deflector can be improved, that is, the deformation of the wind deflector can be effectively avoided.

[0029] Two ribs 32 are provided on the wind deflector 3, and the two ribs 32 are distributed at intervals along the width direction of the wind deflector 3. By adopting this structure, the structural strength of the wind deflector can be further improved, so as to avoid the wind deflector from deforming.

[0030] The rib 32 is stamped onto the wind deflector 3, and the back side of the rib 32 naturally forms a groove 33. By adopting this structure, it has the advantages of easy rib forming and good integrity between the rib and the wind deflector. Furthermore, since the back side of the rib can naturally form a groove after the wind deflector is stamped and formed, the structural strength and deformation resistance of the wind deflector can be further improved.

[0031] The adjusting plate 4 is located inside the end plate 2. The end plate 2 has an elongated hole 21. The fan airflow adjustment structure also includes at least one bolt 5. The threaded part of the bolt 5 passes through the elongated hole 21 and is threadedly connected to the end plate 2. The head of the bolt 5 abuts against the outer end face of the end plate 2. When the bolt 5 is loosened, the threaded part of the bolt 5 can move relative to the elongated hole 21 to adjust the movement of the adjusting plate 4. When the bolt 5 is tightened, the bolt 5 is used to lock the adjusting plate 4 and the end plate 2. With this structure, when the bolt is loosened, the threaded part of the bolt can move relative to the elongated hole to adjust the movement of the adjusting plate. When the bolt is tightened, the bolt can lock the adjusting plate and the end plate, thereby enabling the adjusting plate to be movably and adjustably connected to the end plate.

[0032] The fan outlet air volume adjustment structure includes two bolts 5, which are spaced apart along the length of the elongated hole 21. The threaded part of each bolt 5 moves through the elongated hole 21 and is threadedly connected to the end plate 2. By setting the two bolts, when the two bolts are loosened and when the bolts are pushed to move the adjustment plate relative to the end plate, the sliding action of the threaded part of the two bolts and the elongated hole can guide the movement of the adjustment plate, thereby improving the stability of the adjustment of the adjustment plate. In addition, after the two bolts are tightened, the reliability of fixing the adjustment plate to the end plate can be improved.

[0033] One end of the adjusting plate 4 is bent to form a bent section 41, which abuts against one side of the free end of the wind deflector 3. By setting a bent section on one end of the adjusting plate, one end of the adjusting plate can reliably abut against one side of the free end of the wind deflector, thereby enabling one end of the adjusting plate to reliably push and support the wind deflector. Furthermore, since the bent section is formed by bending one end of the adjusting plate, it has the advantage of high connection strength between the bent section and the adjusting plate.

[0034] A fuel-fired heater includes a housing 6 and the aforementioned fan airflow adjustment structure. The fan assembly is fixed on the housing 6, and the air outlet of the volute 1 is connected to the air inlet of the burner fixed on the housing 6. By adopting the aforementioned fan airflow adjustment structure, the airflow of the burner can be adjusted, thereby making the combustion of fuel in the burner more complete.

[0035] In use, when the impeller in the fan assembly rotates under the drive of the motor, it can deliver air to the air outlet channel of the volute. At this time, the baffle plate can naturally rotate towards one side of the adjusting plate under the push of the air and abut against one end of the adjusting plate. After the baffle plate abuts against one end of the adjusting plate, the fan assembly can be at its maximum airflow. When the bolts used to fix the adjusting plate and the end plate are loosened and the adjusting plate is moved, the airflow of the fan assembly can be adjusted. The adjustment mechanism works as follows: when the adjusting plate moves towards the side closer to the baffle plate, the baffle plate is pushed and rotates away from the adjusting plate. At this time, the air volume of the fan assembly decreases. When the adjusting plate moves away from the baffle plate, the baffle plate rotates towards the side closer to the adjusting plate under the push of the air. At this time, the air volume of the fan assembly increases. This achieves the adjustment of the air volume of the fan assembly. After the air volume of the fan assembly is adjusted, tighten the bolts again to lock the adjusting plate and the end plate.

[0036] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A fan airflow adjustment structure, comprising a fan assembly, the fan assembly including a volute (1) and an end plate (2) fixed to the side wall of the volute (1) and used to close the volute (1); characterized in that: The fan air volume adjustment structure also includes a baffle plate (3) and an adjustment plate (4); the baffle plate (3) is disposed in the air outlet channel (11) of the volute (1), one end of the baffle plate (3) is rotatably connected to the volute (1) located on one side of the air outlet channel (11), and the other end of the baffle plate (3) forms a free end; the adjustment plate (4) is movably and adjustablely connected to the end plate (2), and one end of the adjustment plate (4) is used to abut against one side of the free end of the baffle plate (3) to limit the rotation range of the baffle plate (3).

2. The fan outlet air volume adjustment structure according to claim 1, characterized in that: A support shaft (12) is fixed on the volute (1) located on one side of the air outlet channel (11). A curled part (31) is provided on one end of the baffle plate (3). The curled part (31) is sleeved on the support shaft (12) and rotatably connected to the support shaft (12).

3. The fan outlet air volume adjustment structure according to claim 1, characterized in that: A limiting post (13) is fixed on the volute (1) on the other side of the air outlet channel (11). The limiting post (13) is used to abut against the other side of the free end of the baffle (3) to limit the minimum opening of the baffle (3).

4. The fan outlet air volume adjustment structure according to claim 1, characterized in that: At least one rib (32) is provided on the wind deflector (3), and the rib (32) extends along the length direction of the wind deflector (3).

5. The fan outlet air volume adjustment structure according to claim 4, characterized in that: The wind deflector (3) is provided with two protruding ribs (32), which are distributed at intervals along the width direction of the wind deflector (3).

6. The fan outlet air volume adjustment structure according to claim 4 or 5, characterized in that: The rib (32) is stamped on the wind deflector (3), and the back side of the rib (32) naturally forms a groove (33).

7. The fan outlet air volume adjustment structure according to claim 1, characterized in that: The adjusting plate (4) is located on the inner side of the end plate (2). The end plate (2) is provided with an elongated hole (21). The fan air volume adjustment structure also includes at least one bolt (5). The screw part of the bolt (5) passes through the elongated hole (21) and is threadedly connected to the end plate (2). The head of the bolt (5) abuts against the outer end face of the end plate (2). When the bolt (5) is loosened, the screw part of the bolt (5) can move relative to the elongated hole (21) to realize the movement adjustment of the adjusting plate (4). When the bolt (5) is tightened, the bolt (5) is used to lock the adjusting plate (4) and the end plate (2).

8. The fan outlet air volume adjustment structure according to claim 7, characterized in that: The fan air volume adjustment structure includes two bolts (5), which are spaced apart along the length of the elongated hole (21). The threaded part of each bolt (5) passes through the elongated hole (21) and is threadedly connected to the end plate (2).

9. The fan outlet air volume adjustment structure according to claim 7 or 8, characterized in that: One end of the adjusting plate (4) is bent to form a bent section (41), and the bent section (41) abuts against one side of the free end of the wind deflector (3).

10. A fuel-fired heater, comprising a housing (6), characterized in that: The fuel-fired heater further includes a fan airflow adjustment structure as described in any one of claims 1-9, wherein the fan assembly is fixed on the housing (6), and the air outlet of the volute (1) is connected to the air inlet of the burner fixed on the housing (6).

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