Burner air duct device

Abstract

The utility model provides a burner air duct device which comprises an air duct body, a first limiting part, an air door baffle and a clutch assembly. The first limiting part is arranged on the outer side wall of the air duct body and is provided with a first combining part; the air door baffle is rotationally arranged in the air duct body; the air door baffle comprises a first assembly part which extends out of the air duct body to form a second limiting part, and the second limiting part is provided with a second combination part; the clutch assembly is arranged on the first limiting part or the second limiting part; the clutch assembly enables the first combination part or the second combination part to be matched with each other or separated from each other, so that the second limiting part is fixed or moves relative to the first limiting part. The first combination part is formed on the first limiting part, the second combination part is formed on the second limiting part, and the first combination part and the second combination part are matched or separated through the clutch assembly, so that fixation and rotation of the air door baffle in the air duct body can be achieved, and the purpose of flexibly controlling opening, closing and fixing of the air door can be achieved.

Description

Technical Field

[0001] The present application relates to the technical field of burners, and in particular to a burner air cylinder device. Background Art

[0002] The burner is a specific component that directly participates in the combustion process in thermal equipment such as industrial furnaces, boilers, and gas turbines. It is mainly responsible for mixing fuel (such as natural gas, fuel oil, pulverized coal, etc.) with combustion air in a certain proportion and spraying it into the furnace in a specific way, so as to cause the fuel to burn in the furnace and generate heat.

[0003] The burner air cylinder is a part of the burner system, which is mainly used to guide and control the flow of combustion-supporting air required for combustion and provide a stable air supply for the combustion process. Specifically, by adjusting the opening and closing of the air door in the air cylinder and the limit fixation, the air flow entering the combustion chamber can be flexibly adjusted. During the combustion process, dynamic control is achieved according to the ratio of air and fuel to ensure stable combustion and optimization of combustion efficiency. An existing air cylinder device has an air door limit method, which is to wait for the air door to rotate and open to a predetermined angle, and then use a top screw to tighten the rotating end of the air door to limit the air door from continuing to rotate.

[0004] However, the problem with the method of using a top screw to tighten the rotating end of the damper is that, on the one hand, the top screw is easily corroded by oxidation or expands due to heat, making it difficult to loosen and making it impossible to flexibly adjust the opening and closing of the damper; on the other hand, the top screw has insufficient tightening force or the top screw thread is worn, causing loosening and slipping, then the locking function of the damper is lost, causing the damper to close, resulting in insufficient air in the combustion chamber, causing flashback combustion, and over-temperature combustion and other accidents. Utility Model Content

[0005] The purpose of the embodiment of the present application is to provide a burner air duct device to achieve the effect of flexibly controlling the opening and closing of the air door and fixing it.

[0006] In order to solve the above technical problems, the following technical solutions are provided in the embodiments of the present application:

[0007] A first aspect of the present application provides a burner air cylinder device, the device comprising an air cylinder body, a first limiting portion, an air door baffle and a clutch assembly;

[0008] The first limiting portion is arranged on the outer side wall of the air duct body and has a first connecting portion;

[0009] The damper baffle is rotatably arranged in the air duct body; the damper baffle comprises a first assembly part, one end of the first assembly part is fixedly arranged with the damper baffle, and the other end of the first assembly part extends outside the air duct body to form a second limiting part, and the second limiting part has a second combining part;

[0010] The clutch assembly is arranged at the first limiting portion or the second limiting portion;

[0011] The clutch assembly enables the first combining portion or the second combining portion to cooperate with or disengage from each other, so that the second limiting portion is fixed or movable relative to the first limiting portion.

[0012] In some embodiments of the first aspect of the present application, the clutch assembly includes a fixed member, a movable member, and an elastic member;

[0013] The fixed part and the movable part are both strip-shaped parts, the fixed part and / or the movable part are provided with a mounting part, and the fixed part and the movable part are hingedly connected through the mounting part;

[0014] The elastic member is arranged between the fixed member and the movable member, and two ends of the elastic member are respectively abutted and connected with the end surfaces opposite to the fixed member and the movable member.

[0015] In some embodiments of the first aspect of the present application, the clutch assembly is disposed on the first limiting portion;

[0016] The first end of the fixing member is fixedly connected to the first limiting portion, and the second end extends in a direction away from the first limiting portion;

[0017] The movable part is hinged to the fixed part through the mounting part, and the first end of the movable part is the first combining part and abuts against the first limiting part;

[0018] The second limiting portion is disposed between the first limiting portion and the first combining portion, and the second combining portion corresponds to the first combining portion. The first combining portion is disengaged from or matched with the second combining portion through deformation or restoration of the elastic member.

[0019] In some embodiments of the first aspect of the present application, the first coupling portion includes at least one groove or protrusion;

[0020] The second combining part includes a plurality of protrusions or grooves corresponding to the first combining part, and the plurality of protrusions or grooves are arranged at intervals along a circular arc line on the second limiting part; or, the first combining part is a clamping block, and the second combining part is a toothed groove; the movable part is provided with a pointer, and the second limiting part is provided with an arc-shaped angle mark.

[0021] In some embodiments of the first aspect of the present application, the clutch assembly is disposed on the second limiting portion;

[0022] The first end of the fixing member is fixedly connected to the second limiting portion, and the second end extends in a direction away from the second limiting portion;

[0023] The first end of the movable member is provided with a second combining portion, and the elastic member is arranged between the movable member and the fixed member near the second end of the movable member, so that the second combining portion abuts against the first limiting portion and matches with the first combining portion.

[0024] In some embodiments of the first aspect of the present application, the first combining portion is a plurality of grooves or protrusions arranged on the first limiting portion, the grooves or protrusions are arranged at intervals along a circular arc line, and the second combining portion is at least one protrusion or groove; or, the first combining portion is a toothed groove, and the second combining portion is a clamping block, which is clamped into the toothed groove for limiting and fixing.

[0025] In some embodiments of the first aspect of the present application, the first limiting portion includes an end plate, which is provided with an arc-shaped angle mark; the fixing member is provided with a pointer, the tip of the pointer points to the angle mark; the end plate is also provided with two limiting columns, which are respectively arranged on both sides of the angle mark.

[0026] In some embodiments of the first aspect of the present application, a mounting seat is further included, and the mounting seat is arranged on the inner side wall of the wind tube body;

[0027] The damper baffle is rotatably connected to the mounting seat via a second assembly portion, and the second assembly portion is arranged opposite to the first assembly portion.

[0028] In some embodiments of the first aspect of the present application, the sleeve has one end disposed on the outer wall of the air cylinder body, and the other end extending in a direction away from the sleeve body, the sleeve is connected to the interior of the air cylinder body, and the other end of the sleeve is a first limiting portion;

[0029] The other end of the first assembly portion is inserted into the sleeve along the length direction of the sleeve, and the second limiting portion is matched with the first limiting portion.

[0030] In some embodiments of the first aspect of the present application, a silencer cylinder is further included, which is connected to the wind cylinder body and is provided with an air inlet, and a filter is detachably provided on the outer side of the air inlet.

[0031] Compared with the prior art, the burner duct device provided in the present application is characterized in that a first limiting portion is provided on the outer wall of the duct body, a first combining portion is formed on the first limiting portion, a first assembly part is provided on the damper baffle, a second limiting portion is formed by extending the duct body, a second combining portion is formed on the second limiting portion, and the first combining portion is engaged or disengaged with the second combining portion through a clutch assembly so that the second limiting portion is fixed or movable relative to the first limiting portion, thereby realizing the fixation and rotation of the damper baffle in the duct body, and being able to solve the problem of flexibly controlling the opening and closing and fixing of the damper. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present application will become easy to understand. In the accompanying drawings, several embodiments of the present application are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0033] Figure 1 A schematic diagram of the structure of a burner air cylinder device is shown schematically;

[0034] Figure 2 A schematic diagram of a combination of a first limiting portion and a second limiting portion is schematically shown;

[0035] Figure 3 Another structural diagram of a burner air cylinder device is schematically shown;

[0036] Figure 4 Another schematic diagram of the combination of the first limiting portion and the second limiting portion is schematically shown.

[0037] Description of Figure Numbers:

[0038] 00. Air duct body; 1. First limiting part; 101. First connecting part; 2. Air damper; 21. First assembly part; 22. Second assembly part; 3. Second limiting part; 31. Second connecting part; 4. Clutch assembly; 41. Fixed part; 42. Movable part; 43. Elastic part; 5. Groove; 6. Bump; 7. Block; 8. Toothed groove; 9. Mounting seat; 10. Sleeve; 11. Silencer cylinder; 12. Filter; 13. Mounting groove. DETAILED DESCRIPTION

[0039] The exemplary embodiments disclosed in the present application will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments disclosed in the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0040] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by technicians in the field to which this application belongs.

[0041] The burner is a specific component that directly participates in the combustion process in thermal equipment such as industrial furnaces, boilers, and gas turbines. It is mainly responsible for mixing the fuel and combustion air in a certain proportion and spraying them into the furnace in a specific way, so that the fuel burns in the furnace and generates heat.

[0042] The burner air cylinder is a part of the burner system, which is mainly used to guide and control the flow of combustion air required for combustion, and provide a stable air supply for the combustion process. The air flow rate can be adjusted by the size of the air door opening and closing, so that it can fully cooperate with the fuel to achieve the best combustion effect.

[0043] A rotating damper baffle is provided in the wind tube. By changing the rotation angle of the damper baffle, the size of the damper opening and closing can be adjusted. If the damper baffle is at 0° and is in a closed state, the wind tube can be completely closed to block the combustion air from entering. The damper baffle rotates 90° in the wind tube and is in an upright state, and the damper is in the maximum opening and closing state. Specifically, the rotation angle of the damper baffle should be adjusted according to the combustion state of the burner and the mixing state with the fuel, so as to adjust the flow rate of the combustion air entering the wind tube. When the damper baffle rotates to a suitable angle, the damper needs to be locked and fixed. The traditional method of tightening the damper shaft with a top screw is adopted. On the one hand, the top screw is oxidized and corroded or expands due to heat, which makes it difficult to loosen and cannot flexibly adjust the opening and closing of the damper; on the other hand, the top screw has insufficient tightening force or the top screw thread is worn, resulting in loosening and slipping, which loses the locking function of the damper and causes the damper to close. Based on this, the present application proposes a burner air duct device, wherein a first limiting portion is arranged on the outer side wall of the air duct body, and the first limiting portion has a first combining portion; a first assembly part is arranged on the air door baffle, and one end of the first assembly part extends out of the air duct body to form a second limiting portion, and the second limiting portion has a second combining portion; and also includes a clutch assembly, which is arranged on the first limiting portion or the second limiting portion; and is used to drive the first combining portion or the second combining portion to cooperate with or disengage from each other, thereby realizing relative limiting fixation or relative movement and rotation between the first limiting portion and the second limiting portion.

[0044] Reference Figure 1 , 3 , Embodiment 1 of the present application proposes a burner air duct device, the device comprising: an air duct body 00, a first limiting portion 1, an air door baffle 2 and a clutch assembly 4;

[0045] The first limiting portion 1 is disposed on the outer wall of the wind tube body 00 and has a first connecting portion 101;

[0046] The damper baffle 2 is rotatably disposed in the air duct body 00; the damper baffle 2 includes a first assembly part 21, one end of the first assembly part 21 is fixedly disposed with the damper baffle 2, and the other end extends outside the air duct body 00 to form a second limiting portion 3, and the second limiting portion 3 has a second combining portion 31;

[0047] The clutch assembly 4 is disposed on the first limiting portion 1 or the second limiting portion 3;

[0048] The clutch assembly 4 enables the first combining portion 101 or the second combining portion 31 to cooperate with or disengage from each other, so that the second limiting portion 3 is fixed or movable relative to the first limiting portion 1 .

[0049] Specifically, in order to enable the damper baffle 2 to rotate flexibly in the wind cylinder body 00 and to be fixed with the wind cylinder body 00 when it is rotated to a predetermined position, in the technical solution adopted in the present application, the wind cylinder body 00 may be circular or rectangular and made of a metal material with a certain structural strength, such as steel. The interior of the wind cylinder body 00 is hollowed out to form a channel for the flow of combustion-supporting air; the filtered air flows into the mixing section through the wind cylinder body 00 and is mixed with the fuel before being burned.

[0050] The damper baffle 2 is rotatably arranged in the air duct body 00, and can rotate about a straight line passing through the axis of the air duct body 00; the damper baffle 2 is a plate with a certain thickness, and the outer contour of the damper baffle 2 is adapted to the inner wall of the air duct body 00, so that the outer edge of the damper baffle 2 fits with the inner wall of the air duct body 00, so as to meet the combustion needs. When combustion-supporting air is not needed, the damper baffle 2 blocks the combustion-supporting air from the outside from flowing into the air duct.

[0051] A first limiting portion 1 is provided on the outer wall of the air cylinder body 00. The first limiting portion 1 can be arranged in close contact with the cylinder wall or can be arranged at a distance from the cylinder wall.

[0052] A first assembly part 21 is fixedly provided at the edge of the damper baffle 2. The first assembly part 21 is a rotating shaft, which extends out of the air cylinder body 00 to form a second limiting portion 3. Alternatively, the first assembly part 21 can also be a long rotating shaft that passes through the center line of the damper baffle 2 and is integrally provided with the damper baffle 2. The damper baffle 2 is provided on both sides of the rotating shaft. Both ends of the rotating shaft extend out of the edge of the damper baffle 2. One end is the first assembly part 21, and the other end is the second assembly part 22. The end of the second assembly part 22 away from the damper baffle 2 is rotatably connected to the air cylinder body 00. The end of the first assembly part 21 away from the damper baffle 2 extends out of the air cylinder body 00 to form a second limiting portion 3.

[0053] The clutch assembly 4 includes a fixing member 41 and a movable member 42, which is fixedly arranged on the first limiting portion 1 or the second limiting portion 3 through the fixing member 41, wherein the first joint portion 101 includes a plurality of grooves 5 arranged in an arc line and a scale mark is provided on one side of the groove 5, and the second joint portion 31 is at least one groove 5, and an arrow or pointer pointing to the scale mark is provided on one side of the groove 5. When the damper baffle 2 is rotated to a suitable opening angle in the air duct body 00, the movable member 42 of the clutch assembly 4 is inserted into the groove 5 formed by the first joint portion 101 and the second joint portion 31, and is gap-matched with the groove 5, so that the first limiting portion 1 and the second limiting portion 3 are relatively fixed. The damper baffle 2 is relatively fixed to the air duct body 00 outside the air duct body 00, and the reading on the scale mark of the first joint portion 101 is read by the arrow or pointer on the second joint portion 31, so that the rotation angle of the damper baffle 2 can be known. Among them, the scale mark setting range is 0°-90°.

[0054] The burner air duct device provided in the present application is characterized in that a first limiting portion 1 is provided on the outer wall of the air duct body 00, a first coupling portion 101 is formed in the first limiting portion 1, a first assembly part 21 is provided on the air damper baffle 2, a second limiting portion 3 is formed extending out of the air duct body 00, a second coupling portion 31 is formed in the second limiting portion 3, and the first coupling portion 101 is engaged or disengaged with the second coupling portion 31 by means of a clutch assembly 4, so that the second limiting portion 3 is fixed or movable relative to the first limiting portion 1, thereby realizing the fixation and rotation of the air damper baffle 2 in the air duct body 00, and being able to solve the problem of flexibly controlling the opening and closing of the air damper and fixing it.

[0055] For further information, see Attachment Figure 1-4 , in some embodiments, the clutch assembly 4 includes a fixed member 41, a movable member 42 and an elastic member 43;

[0056] The fixed member 41 and the movable member 42 are both strip-shaped members, and the fixed member 41 and / or the movable member 42 are provided with a mounting portion, and the fixed member 41 and the movable member 42 are hingedly connected through the mounting portion;

[0057] The elastic member 43 is disposed between the fixed member 41 and the movable member 42 , and two ends of the elastic member 43 are respectively abutted against the end surfaces of the fixed member 41 and the movable member 42 that are opposite to each other.

[0058] Specifically, in order to achieve that the clutch assembly 4 disposed on the first limiting portion 1 or the second limiting portion 3 can make the first combination portion 101 match or disengage with the second combination portion 31, in the technical solution adopted by the present application, the elastic member 43 is a compression spring member or an elastic rubber member or a torsion spring, which can rebound and restore the deformation after being compressed at both ends. In this state, it is disposed between the movable member 42 and the fixed member 41, and the two ends of the elastic member 43 are respectively in contact with the movable member 42 and the fixed member 41.

[0059] A mounting portion is fixedly disposed on the fixing member 41 , and the movable member 42 is disposed on the mounting portion. The movable member 42 is rotatably connected to the fixing member 41 through the mounting portion. At this time, the elastic member 43 is disposed at intervals from the mounting portion.

[0060] The mounting portion includes two mounting plates arranged at intervals, and the two mounting plates are arranged on the fixing member 41 opposite to each other at intervals, and mounting holes arranged opposite to each other are provided on the mounting plates; the movable member 42 is arranged between the two mounting plates, and a pin extending toward the mounting plates is provided on the movable member 42, and the two ends of the pin are inserted into the mounting holes, so that the movable member 42 can rotate relative to the fixing member 41 with the mounting portion as the axis;

[0061] Similarly, the above-mentioned mounting portion can also be arranged on the movable member 42, and the arrangement method is the same, which will not be repeated here.

[0062] The mounting part can also be relatively arranged on the fixed part 41 and the movable part 42. The mounting plates of the mounting part are arranged at intervals. The pin shaft is used to pass through the mounting holes on the mounting plates at the same time, and a torsion spring is installed on the pin shaft. The movable part 42 rotates relative to the fixed part 41 with the pin shaft as the axis.

[0063] The mounting portion can be arranged at the end of the fixed part 41 or the movable part 42 , or at the middle section, and the specific position is arranged according to the usage.

[0064] For further information, see Attachment Figure 1-2 In some embodiments, the clutch assembly 4 is disposed on the first limiting portion 1; the first end of the fixing member 41 is fixedly connected to the first limiting portion 1, and the second end extends in a direction away from the first limiting portion 1;

[0065] The movable member 42 is hinged to the fixed member 41 through the mounting portion, and the first end of the movable member 42 is the first coupling portion 101 and abuts against the first limiting portion 1;

[0066] The second limiting portion 3 is disposed between the first limiting portion 1 and the first combining portion 101 , and the second combining portion 31 corresponds to the first combining portion 101 . The first combining portion 101 and the second combining portion 31 are separated or matched through deformation or restoration of the elastic member 43 .

[0067] For further information, see Attachment Figure 1-4 , in some embodiments, the first combining portion 101 includes at least one groove 5 or a protrusion 6;

[0068] The second combining portion 31 includes a plurality of protrusions 6 or grooves 5 corresponding to the first combining portion 101, and the plurality of protrusions 6 or grooves 5 are arranged at intervals along an arc line on the second limiting portion 3; or,

[0069] The first coupling portion 101 is a clamping block 7, and the second coupling portion 31 is a toothed groove 8;

[0070] The movable member 42 is provided with a pointer, and the second limiting portion 3 is provided with an arc-shaped angle mark.

[0071] Specifically, in order to realize the relative rotation of the second limiting part 3 with the first limiting part 1 according to the rotation of the damper baffle 2, and to fix it relatively after rotating to a predetermined position, in the technical solution adopted in the present application, the outline of the first limiting part 1 is a circular end plate, the middle part of the end plate is hollowed out and connected to the wind tube body 00.

[0072] The first assembly part 21 fixedly arranged on the damper baffle 2 extends from the hollow part in the middle of the first limiting part 1 to form a second limiting part 3 outside the air duct body 00. The second limiting part 3 can be an end plate, and one side of the end plate is arranged close to the end surface of the first limiting part. In order to facilitate the rotation of the damper baffle 2, a handle is fixedly arranged on the end plate of the second limiting part 3.

[0073] The clutch assembly 4 is vertically arranged on the end plate of the first limiting part 1, and the middle sections of the fixed part 41 and the movable part 42 are respectively provided with mounting parts, a pin is passed through the mounting part, and a torsion spring is mounted on the pin; or

[0074] A compression spring or an elastic rubber part is assembled on the side of the mounting part away from the first end of the fixing part 41, so that the first end of the movable part 42 abuts against the end face of the second limiting part 3 arranged adjacent to the first limiting part 1, and the first combining part 101 arranged at the first end of the movable part 42 faces the end face of the second limiting part 3 and cooperates with the second combining part 31 arranged on the second limiting part 3.

[0075] One way to make the first combining portion 101 and the second combining portion 31 match each other is:

[0076] The first combining portion 101 is a convex block 6 , and the second combining portion 31 is a concave groove 5 , so that the convex block 6 is inserted into the concave groove 5 , thereby achieving relative fixation between the first limiting portion 1 and the second limiting portion 31 .

[0077] In order to ensure that the second limiting portion 3 can be relatively fixed with the first limiting portion 1 after rotating to any angle, the second limiting portion 3 has a plurality of grooves 5 arranged at intervals along a circular arc, and the circular arc is a 90° arc, so that the first coupling portion 101 can cooperate with any groove 5 of the second limiting portion 3.

[0078] In order to facilitate the observation of the rotation angle of the second limiting part 3 relative to the first limiting part 1, the opening and closing degree of the damper baffle 2 can be observed intuitively. Angle marks are set at the corresponding positions of the lower end or upper end of the grooves 5 arranged along the arc, and the interval arc between the grooves 5 is 5° or 10°. When the damper baffle 2 rotates from 0° to 90°, the opening is the largest, and the flow rate of the combustion air is the largest at this time. By pressing the second end of the movable part 42 and bringing the second end of the movable part 42 close to the second end of the fixed part 41, the elastic part 43 is compressed, so that the first joint part 101 is disengaged from the second joint part 31. At this time, the second limiting part 3 can rotate freely relative to the first limiting part 1.

[0079] Another way to make the first joint part 101 and the second joint part 31 match each other is: the first joint part 101 is a groove 5, the second joint part 31 is a convex block 6, and the convex block 6 is arranged on the end surface of the second limiting part 3 and is arranged toward the side away from the first limiting part 1, so that the convex block 6 is stuck in the groove 5. There are multiple convex blocks 6 of the second joint part 31, and they are arranged in an arc shape, the arc is a 90° arc, and the interval arc between the convex blocks 6 is 5° or 10°, so that the groove 5 of the first joint part 101 can match with any convex block 6 of the second limiting part 3, thereby adjusting the opening and closing degree of the damper baffle 2.

[0080] Another way to make the first combining portion 101 and the second combining portion 31 cooperate with each other is: the first combining portion 101 is a clamping block 7, and the second combining portion 31 is a toothed groove 8;

[0081] The toothed groove 8 is arranged at the edge of the end plate of the second position-limiting part 3, and the toothed groove 8 is a 90° arc groove. The first end of the movable member 42 extends to the edge of the end plate of the second position-limiting part 3, and the clamping block 7 is clamped into the arc groove. In order to be able to visually observe the rotation angle of the second position-limiting part 3 relative to the first position-limiting part 1, the opening and closing degree of the damper baffle 2 can be observed.

[0082] A pointer is provided on the end face of the movable member 42 away from the first limiting portion 1, and the pointer points to the toothed groove 8. A circular arc angle mark is correspondingly provided on one side of the toothed groove 8. The interval arc between the toothed grooves is 5° or 10°.

[0083] For further information, see Attachment Figure 3-4 In some embodiments, the clutch assembly 4 is disposed on the second limiting portion 3; the first end of the fixing member 41 is fixedly connected to the second limiting portion 3, and the second end extends in a direction away from the second limiting portion 3; the first end of the movable member 42 is provided with a second coupling portion 31, and the elastic member 43 is disposed between the movable member 42 and the fixing member 41 near the second end of the movable member 42, so that the second coupling portion 31 abuts against the first limiting portion 1 and cooperates with the first coupling portion 101. The first coupling portion 101 is a plurality of grooves 5 or protrusions 6 disposed on the first limiting portion 1, and the grooves 5 or protrusions 6 are arranged at intervals along the arc line, and the second coupling portion 31 is at least one protrusion 6 or groove 5; or, the first coupling portion 101 is a toothed groove 8, and the second coupling portion 31 is a clamping block 7, and the clamping block 7 is clamped into the toothed groove 8 for limiting and fixing.

[0084] The first limiting part 1 comprises an end plate, on which an arc-shaped angle mark is arranged; the fixing member 41 is provided with a pointer, the tip of which points to the angle mark; the end plate is also provided with two limiting columns, which are respectively arranged on both sides of the angle mark.

[0085] Specifically, in order to realize the relative rotation of the second limiting portion 3 with the first limiting portion 1 according to the rotation of the damper baffle 2, and to be relatively fixed after rotating to a predetermined position, another technical solution adopted by the present application is:

[0086] The first limiting part 1 has a circular end plate, the middle part of which is hollowed out and connected to the air duct body 00; the first assembly part 21 fixedly arranged on the air door baffle 2 extends from the hollowed-out part in the middle of the first limiting part 1 to form a second limiting part 3 outside the air duct body 00, and the second limiting part 3 can be an end plate;

[0087] The clutch assembly 4 is fixedly arranged on the second limiting part 3, the first end of the fixing member 41 is fixedly arranged on the end plate of the second limiting part 3, and the second end extends in the direction away from the second limiting part 3, the mounting part is arranged on the middle section of the movable member 42 and / or the fixing member 41, the mounting part is provided with a mounting hole, and a pin is passed through the mounting hole, so that the movable member 42 and the fixing member 41 are hinged through the mounting part. The elastic member 43 is arranged on the side of the mounting part away from the first end of the fixing member 41, and the two ends of the elastic member 43 are elastically pressed against the movable member 42 and the fixing member 41 respectively, so that the second joint part 31 arranged on the upper end of the movable member 42 presses against the end surface of the first limiting part 1 and matches with the first joint part 101.

[0088] One way to make the first combining portion 101 and the second combining portion 31 match each other is:

[0089] The first combining portion 101 is a groove 5 , and the second combining portion 31 is a convex block 6 , so that the convex block 6 is inserted into the groove 5 , thereby achieving relative fixation between the first limiting portion 1 and the second limiting portion 31 .

[0090] In order to ensure that the second limiting portion 3 can be relatively fixed with the first limiting portion 1 after rotating to any angle, there are multiple grooves 5 on the first limiting portion 1, and they are arranged in an arc shape with intervals, and the arc is a 90° arc, so that the protrusion 6 of the second combining portion 31 can match with any groove 5 of the first limiting portion 1.

[0091] In order to facilitate the observation of the rotation angle of the second limiting part 3 relative to the first limiting part 1, the opening and closing degree of the damper baffle 2 can be observed intuitively. Angle marks are set at the corresponding positions of the lower end or upper end of the grooves 5 arranged along the arc, and the interval arc between the grooves 5 is 5° or 10°. When the damper baffle 2 rotates from 0° to 90°, the opening is the largest, and the flow rate of the combustion air is the largest at this time. By pressing the second end of the movable part 42 and bringing the second end of the movable part 42 close to the second end of the fixed part 41, the elastic part 43 is compressed, so that the second combination part 31 is detached from the first combination part 101. At this time, the second limiting part 3 can rotate freely relative to the first limiting part 1.

[0092] On this basis, another way to make the first combination part 101 and the second combination part 31 cooperate with each other is that the first combination part 101 is a plurality of projections 6 arranged at intervals, and the second combination part 31 is at least one groove 5. The projection 6 can be embedded in the groove 5.

[0093] The plurality of protrusions 6 are arranged in an arc shape, the arc is 90°, and the interval between the protrusions 6 is 5° or 10°. The specific arrangement is the same as above, only the first structure part and the second combination part 31, the protrusions 6 and the grooves 5 are replaced with each other, which will not be repeated here.

[0094] On this basis, another way to make the first combining portion 101 and the second combining portion 31 cooperate with each other is: the first combining portion 101 is a toothed groove 8, and the second combining portion 31 is a clamping block 7;

[0095] The toothed groove 8 is arranged at the edge of the end plate of the first limiting part 1, and the toothed groove 8 is a 90° arc groove. The first end of the movable member 42 is the second coupling part 31, and the clamping block 7 arranged on the second coupling part 31 extends toward the first limiting part 1 and makes the clamping block 7 be clamped in the arc groove.

[0096] In order to be able to visually observe the rotation angle of the second limiting portion 3 relative to the first limiting portion 1 , the opening and closing degree of the air door baffle 2 can be observed.

[0097] A pointer is provided on the end face of the fixing member 41 facing away from the first limiting portion 1, and an arc-shaped angle mark is provided on the upper end of the corresponding position of the toothed groove 8. The range value of the angle mark is 0°-90°, and the arc interval between the tooth grooves is 5° or 10°. The pointer on the fixing member 41 points to the angle mark on the first limiting portion 1.

[0098] In addition, two limiting posts are provided on the end plate of the first limiting portion 1 , and the limiting posts are respectively provided at both ends of the angle mark, and are used to limit the rotation of the fixing member 41 between the two limiting posts, that is, within the angle range of 0-90°.

[0099] For further information, see Attachment Figure 1 , 3 In some embodiments, a mounting seat 9 is further included, and the mounting seat 9 is arranged on the inner wall of the wind cylinder body 00; the damper baffle 2 is rotatably connected to the mounting seat 9 through a second assembly part, and the second assembly part is arranged opposite to the first assembly part.

[0100] Specifically, in order to realize the stable and flexible rotation of the damper baffle 2 in the air duct body 00, in the technical solution adopted by the present application, a mounting seat 9 is added on the inner side wall of the air duct body 00, and a second assembly part is provided on the damper baffle 2 at a position opposite to the first assembly part, and the second assembly part is coaxial with the first assembly part. The first assembly part and the second assembly part are cylindrical, and the mounting seat 9 has a circular hollow part for accommodating the second assembly part. And for further smooth and flexible rotation, the mounting seat 9 can be a bearing seat, so that the second assembly part and the bearing have an interference fit.

[0101] For further information, see Attachment Figure 1 , 3 In some embodiments, a sleeve 10 is further included, one end of which is disposed on the outer wall of the wind cylinder body 00, and the other end of which extends away from the sleeve 10 body, the sleeve 10 is connected to the interior of the wind cylinder body 00, and the other end of the sleeve 10 is a first limiting portion 1;

[0102] The other end of the first assembly portion is inserted into the sleeve 10 along the length direction of the sleeve 10 , and the second limiting portion 3 is matched with the first limiting portion 1 .

[0103] Specifically, in order to make the first limiting portion 1 and the second limiting portion 3 away from the wind cylinder body 00, thereby avoiding being burned by the high temperature of the cylinder wall when the air door baffle 2 is manually rotated, in the technical solution adopted in the present application, a sleeve 10 is added to the outer wall of the wind cylinder body 00. The sleeve 10 is a cylindrical body with a hollow interior. One end of the sleeve 10 is fixed to the wind cylinder body 00, and the other end extends in the direction away from the wind cylinder body 00, and the sleeve 10 is connected to the interior of the wind cylinder body 00.

[0104] The other end of the sleeve 10 forms a first limiting portion 1, which is a circular end plate, and a first combining portion 101 is arranged on the circular end plate. The first assembly portion of the damper baffle 2 passes through the sleeve 10 and forms a second limiting portion 3, and the second limiting portion 3 is provided with a second combining portion 31. The clutch assembly 4 is arranged on the first limiting portion 1 or the second limiting portion 3 so that the first combining portion 101 and the second combining portion 31 can cooperate with or disengage from each other.

[0105] In order to make the first matching portion of the air door baffle 2 assembled in the sleeve 10, it is possible to ensure the sealing performance of the air cylinder body 00 and to enable stable rotation.

[0106] An annular sealing ring is provided at one end of the sleeve 10 close to the wind cylinder body 00, and a bearing is provided on the other side of the sealing ring. The first assembly portion of the damper baffle 2 passes through the annular sealing ring and the bearing, and the inner ring of the bearing is tightly matched, so that the bearing can assist the first assembly portion to rotate in the sleeve 10. The first assembly portion, the second assembly portion, the sleeve 10, and the bearing provided in the sleeve 10 are all coaxially arranged.

[0107] For further information, see Attachment Figure 1 , 3 In some embodiments, a silencer cylinder 11 is further included, and the silencer cylinder 11 is connected to the wind cylinder body 00, and the silencer cylinder 11 is provided with an air inlet, and a filter 12 is detachably provided on the outer side of the air inlet.

[0108] Specifically, in order to reduce the noise generated when air enters the combustion chamber, a silencer cylinder 11 is provided on the air duct body 00. One end of the silencer cylinder 11 is connected to the air duct body 00, and the other end is provided with an air inlet.

[0109] In order to make the air entering the burner from the silencer cylinder 11 clean and free of dust and impurities, so as to ensure the combustion efficiency and the stable and safe operation of the equipment, in the technical solution adopted in the present application, a filter 12 is removably provided at the air inlet, wherein the air inlet is a long strip hole and is arranged along the air inlet direction, and multiple air inlets are arranged on the wall of the silencer cylinder 11.

[0110] A filter screen 12 is provided on the outer peripheral side of the silencer cylinder body 11, and the filter screen 12 covers all air inlets. The air enters the air cylinder body 00 after passing through the filter screen 12, impurities in the air are blocked by the filter screen 12, and the clean air continues to flow to the burner.

[0111] After long-term use, the filter 12 will be clogged, affecting the air flow and combustion effect, and may even cause equipment failure. Therefore, regularly check the filtration status of the air duct and clean or replace the filter 12. In order to improve the filtering effect, a 40-mesh 304 stainless steel wire mesh is selected as the filter 12. In order to facilitate the disassembly and replacement of the filter 12, an installation groove 13 is provided around the outer wall of the silencer cylinder 11 at the upper and lower ends of the long strip air inlet. After the filter 12 wraps around the air inlet, it is tied with a stainless steel binding belt and embedded in the installation groove 13, which not only facilitates the replacement of the filter 12 but also ensures the firmness of the installation of the filter 12.

[0112] It should be noted that in the description of this specification, the terms "upper", "lower", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing this application and simplifying the description, and does 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; the terms "connect", "install", "fixed", etc. should be understood in a broad sense, for example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0113] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0114] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A burner air duct device, characterized in that: include: Hairdryer body; A first limiting portion is arranged on the outer side wall of the wind tube body and has a first connecting portion; A damper baffle, the damper baffle is rotatably disposed in the air cylinder body; The damper baffle comprises a first assembly part, one end of which is fixedly arranged on the damper baffle, and the other end of which extends outside the air cylinder body to form a second limiting portion, and the second limiting portion has a second combining portion; A clutch assembly, wherein the clutch assembly is disposed at the first limiting portion or the second limiting portion; The clutch assembly enables the first combining portion or the second combining portion to cooperate with or disengage from each other, so that the second limiting portion is fixed or movable relative to the first limiting portion.

2. The burner air cylinder device according to claim 1, characterized in that: The clutch assembly includes a fixed part, a movable part and an elastic part; The fixed member and the movable member are both strip-shaped members, the fixed member and / or the movable member are provided with a mounting portion, and the fixed member and the movable member are hingedly connected via the mounting portion; The elastic member is arranged between the fixed member and the movable member, and two ends thereof are respectively abutted and connected with the end surfaces opposite to the fixed member and the movable member.

3. The burner air cylinder device according to claim 2, characterized in that: The clutch assembly is arranged on the first limiting portion; The first end of the fixing member is fixedly connected to the first limiting portion, and the second end extends in a direction away from the first limiting portion; The movable member is hinged to the fixed member through the mounting portion, and the first end of the movable member is the first combining portion and abuts against the first limiting portion; The second limiting portion is disposed between the first limiting portion and the first combining portion, and the second combining portion corresponds to the first combining portion. The first combining portion is disengaged from or engaged with the second combining portion through deformation or restoration of the elastic member.

4. The burner air cylinder device according to claim 3, characterized in that: The first coupling portion includes at least one groove or protrusion; The second combining portion includes a plurality of protrusions or grooves corresponding to the first combining portion, and the plurality of protrusions or grooves are arranged at intervals along an arc line on the second limiting portion; or, The first combining portion is a clamping block, and the second combining portion is a toothed groove; The movable part is provided with a pointer, and the second limiting portion is provided with an arc-shaped angle mark.

5. The burner air cylinder device according to claim 2, characterized in that: The clutch assembly is arranged on the second limiting portion; The first end of the fixing member is fixedly connected to the second limiting portion, and the second end extends in a direction away from the second limiting portion; The second combining portion is disposed at the first end of the movable member, and the elastic member is disposed between the movable member and the fixed member near the second end of the movable member, so that the second combining portion abuts against the first limiting portion and cooperates with the first combining portion.

6. The burner air cylinder device according to claim 5, characterized in that: The first combining portion is a plurality of grooves or convex blocks provided on the first limiting portion, the grooves or convex blocks are arranged at intervals along an arc line, and the second combining portion is at least one convex block or groove; or, The first combining portion is a tooth-shaped groove, and the second combining portion is a clamping block, and the clamping block is clamped into the tooth-shaped groove to be limited and fixed.

7. The burner air cylinder device according to claim 6, characterized in that: The first limiting portion includes an end plate, and the end plate is provided with an arc-shaped angle mark; The fixing member is provided with a pointer, the tip of the pointer points to the angle mark; The end plate is further provided with two limiting columns, and the limiting columns are respectively arranged on both sides of the angle mark.

8. The burner air cylinder device according to claim 1, characterized in that: Also includes: A mounting seat, the mounting seat being arranged on the inner side wall of the wind tube body; The damper baffle is rotatably connected to the mounting seat via a second assembling portion, and a first assembling portion is arranged opposite to the second assembling portion.

9. The burner air cylinder device according to claim 8, characterized in that: Also includes: A sleeve, one end of which is disposed on the outer side wall of the air cylinder body, and the other end of which extends in a direction away from the sleeve body, the sleeve is communicated with the interior of the air cylinder body, and the other end of the sleeve is the first limiting portion; The other end of the first assembly portion is inserted into the sleeve along the length direction of the sleeve, and the second limiting portion is matched with the first limiting portion.

10. The burner air cylinder device according to claim 1, characterized in that: Also includes: The silencer cylinder is connected to the wind cylinder body and is provided with an air inlet, and a filter is detachably provided on the outer side of the air inlet.

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