A forced air burner for combusting gaseous and / or liquid fuel

Abstract

The present application relates to a kind of for burning gaseous and / or liquid fuel blast burner, the burner has integrated blower, air volume adjusting damper, silencer and electric control box, it includes: blower, right silencer integrated with the burner electric control box in and left silencer integrated with the motor electric control box in, wherein blower shell front neck is equipped with the frame connecting channel of communication right silencer and left silencer, air door baffle is arranged in frame connecting channel, blower shell is equipped with blower motor, the impeller of the blower is arranged in blower shell, the outer wall of the left and right two silencers is connected respectively with the outer wall of blower shell and is configured to form inverted U-shaped suction channel from air inlet through left silencer to the frame connecting channel, again from frame connecting channel through right silencer to the impeller suction port, the upper portion of right silencer is provided with burner electric control box, and the upper portion of left silencer is provided with motor electric control box.The blast burner of the present application is compact in overall structure, layout is reasonable, easy to assemble, greatly reduce the overall cost of burner.

Description

TECHNICAL FIELD

[0001] The present invention relates to a kind of integrated blast burner, and particularly relates to a kind of blast burner integrating regulating damper, silencer and electric control box on the casing of burner blower. BACKGROUND

[0002] It is generally known that blast burners are usually divided into two structural types of integrated and split type burners, the main difference being whether the blower system of the burner is integrated on the burner body, the burner body with the blower is called an integrated machine, and the blower is separated from the burner and connected by an external air duct, which is called a split machine. A typical integrated burner generally includes a blower impeller, a blower motor and a damper for controlling the air volume on the burner housing, wherein the damper can be arranged on the suction side of the air or the delivery side after being pressurized. Since air needs to be sucked in and delivered after being pressurized by the blower to the combustion head, and then mixed with fuel to complete combustion, the air will usually generate a lot of noise after being sucked in and pressurized when flowing through the air flow channel and the damper baffle.

[0003] In order to eliminate the effect of noise, the current common method is to use a full-cover silencer and install a silencer device at the air inlet of the burner.

[0004] For example, it is known from patent document CN2816606Y to reduce noise by providing a silencer cover around the blast burner housing of the blast burner. The silencer cover forms a "soundproof" cavity around the blast burner to some extent.

[0005] For example, it is known from patent document EP2354652B1 to arrange the electric control box of the burner at a certain space position behind the blower of the burner, use the rear wall of the electric control box, install connecting channels on both sides of the electric control box, use the rear part and the outer wall of the blower on both sides to form an air suction channel from the motor side of the blower to the air suction port of the blower, and arrange sound-absorbing material in the air suction channel to achieve the effect of reducing noise.

[0006] The above two known solutions require corresponding space around the blower of the blast burner to build a soundproof cavity or an air suction channel, increase the components other than the original blast burner, and additionally increase the cost. For the solution of patent document EP2354652B1, although the overall combination of the blower and the silencer device is better, it occupies a larger space behind the burner, making the entire burner larger in size, and the connecting channel components and the electric control box used to build the air suction channel need to be additionally supported and fixed, increasing the manufacturing process steps and difficulty of the burner. In addition, it cannot meet the vertical installation method of the burner, and the available supporting equipment is limited. SUMMARY

[0007] The invention aims to provide a blast burner for burning gaseous and / or liquid fuel, which comprises a blower, a right muffler integrated with a burner electric control box and a left muffler integrated with a motor electric control box, wherein a frame connecting channel is arranged at the front neck of the blower housing and connected with the left and right mufflers, a damper baffle is arranged in the frame connecting channel, the blower housing is provided with a blower motor, the impeller of the blower is arranged in the blower housing, the outer walls of the left and right mufflers are connected with the outer wall of the blower housing and configured to form a reverse U-shaped air suction channel from the air inlet through the left muffler to the frame connecting channel and then from the frame connecting channel through the right muffler to the air suction port of the impeller, the upper part of the right muffler is provided with the burner electric control box, and the upper part of the left muffler is provided with the motor electric control box.

[0008] Further, the position of the front neck of the blower housing refers to the position of the lower housing of the pipe section of the air outlet of the blower to the edge space of the bottom of the volute of the blower, at which the frame connecting channel is arranged.

[0009] Further, the damper baffle is arranged in the frame connecting channel and controls the air volume of the burner through a damper actuator.

[0010] Further, the right and left mufflers are arc-shaped hollow inside and the arc-shaped opening part is sealingly connected with the blower housing.

[0011] Further, the housing part of the right muffler at the air inlet of the impeller is the same in shape as the air inlet of the impeller of the blower, completely covers the air inlet of the impeller and is sealingly connected with the blower housing, and the housing part of the right muffler at the frame connecting channel is the same in shape as the frame channel of the damper baffle, completely covers the frame connecting channel and is sealingly connected with the frame housing part of the blower channel.

[0012] Further, the housing part of the left muffler at the frame connecting channel is the same in shape as the frame channel of the damper baffle, completely covers the frame connecting channel, is sealingly connected with the frame housing part of the blower channel, the left muffler completely covers the blower motor, is sealingly connected with the blower housing, an air inlet is formed at the bottom of the end of the left muffler away from the damper baffle, and the air inlet is a strip-shaped hole, a square hole or a circular hole-shaped grille.

[0013] Further, a motor cooling air hole is formed in the housing of the left muffler along the axial direction of the blower motor, and a cooling air cover of the motor is extended from the motor cooling air hole.

[0014] Further, the inner walls of the air suction channel are all provided with sound-absorbing materials.

[0015] Further, the upper part of the right silencer is provided with a burner electric control box bottom plate, the burner electric control box is installed on the burner electric control box bottom plate, the ring-shaped vertical surface of the right silencer constitutes the burner electric control box shell, and the top is provided with a burner electric control box cover plate.

[0016] Further, the upper part of the left silencer is arranged with a motor electric control box bottom plate, the motor electric control box is installed on the motor electric control box bottom plate, the ring-shaped vertical surface of the left silencer constitutes the motor electric control box shell, and the top is provided with a motor electric control box cover plate.

[0017] The integrated blast burner of the present application is composed of three modules, integrates the blast fan, the damper for air volume adjustment, the silencer and the electric control box and other burner components, integrates the blast fan motor electric control box, the burner electric control box and the silencer constituting the air suction channel, fully utilizes the empty space in front of the blast fan and on both sides, optimizes the overall structure of the burner without increasing the floor space of the burner body, reduces the overall cost of the burner on the basis of reducing the noise, and makes the overall structure of the burner compact, reasonable in layout and easy to assemble. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Fig. 1 shows the three-dimensional appearance schematic diagram of one embodiment of the blast burner of the present application;

[0019] Figure 2 Fig. 2 shows the internal structure schematic diagram of the blast burner of the present application; Figure 1

[0020] Figure 3 Fig. 3 shows the three-dimensional horizontal cross-sectional view of the blast burner in the middle of the electric control box in the present application; Figure 1

[0021] Figure 4 Fig. 4 shows the three-dimensional horizontal cross-sectional view of the blast burner in the middle of the silencer in the present application; Figure 1

[0022] Figure 5 Fig. 5 shows the three-dimensional vertical cross-sectional left view of the blast fan module in the present application; Figure 1

[0023] Figure 6 Fig. 6 shows the three-dimensional vertical cross-sectional right view of the blast fan module in the present application; Figure 1

[0024] Figure 7 Fig. 7 shows the three-dimensional view of the motor side silencer and electric control box module in the present application; Figure 1 ​​​​​​

[0025] Figure 8 as shown Figure 1 Three-dimensional view of the module of the right silencer box of the impeller air inlet side and the electric control box. DETAILED DESCRIPTION

[0026] The application will be further described below by way of examples in conjunction with the accompanying drawings.

[0027] In Figure 1 An embodiment of a forced air burner 1 for burning gaseous and / or liquid fuel consistent with the present application is illustrated in the figure.

[0028] As Figure 1 and Figure 2 The outlet section 26 of the blower 2 housing of the forced air burner 1 is a square-to-round air passage housing section as shown, with a circular outlet, and a hinged flange 29 is provided at the circular outlet portion to connect the burner head section (not shown) containing the burner flame tube, and the hinged flange 29 is symmetrical to facilitate the removal of the burner head by rotating the burner 1 housing section to the left or right through the hinged flange (29).

[0029] The forced air burner 1 of the present application comprises: a blower component integrated with a damper baffle 28, a motor side silencer box component (hereinafter referred to as the left silencer box 4) integrated with a motor control box 46, and an impeller air inlet side silencer box component (hereinafter referred to as the right silencer box 3) integrated with a burner control box 34, which are combined into three modular components. The structure of the three components combined forms an inverted U-shaped air suction passage from the burner air inlet 44 to the frame connection passage 27, and from the frame connection passage 27 to the axial air intake area of the blower housing 21, and the damper baffle 28 is arranged in the frame connection passage 27 and controls the air volume of the burner through the damper actuator 2A.

[0030] As Figures 1 to 8 shown, the forced air burner 1 of the present application comprises: a blower 2, a right silencer box 3 integrated with a burner control box 34 inside, and a left silencer box 4 integrated with a motor control box 46 inside, wherein a frame connection passage is provided at the front neck of the blower housing 21 to communicate the left silencer box 4 and the right silencer box 3, a damper baffle 28 is arranged in the frame connection passage 27, a blower motor 22 is provided in the blower housing, the impeller 24 of the blower is arranged in the blower housing, and the blower housing is internally structured to form an inverted U-shaped air suction passage from the air inlet 44 through the left silencer box 4 to the frame connection passage 27, and from the frame connection passage 27 through the right silencer box 3 to the impeller air suction port 25, the burner control box 34 is arranged at the upper part of the right silencer box 3, and the motor control box 46 is arranged at the upper part of the left silencer box 4.

[0031] As shown in Figure 4 and Figure 5 , the frame channel 27 of the damper baffle 28 is located at the position of the lower housing of the pipe section 26 of the air outlet of the blower 2 to the edge space of the bottom of the blower volute, the lower plane of the housing of the pipe section 26 of the air outlet of the blower 2 is part of the damper frame connecting channel 27, integrating the damper and the blower into a structure. This damper frame connecting channel 27 simultaneously serves as the connecting component of the left and right air suction channels 31 and 41.

[0032] As shown in Figure 6 and Figure 7 , the left and right sound attenuation boxes 4 and 3 are arc-shaped hollow inside, the arc-shaped opening part is sealingly connected with the blower housing 2, respectively forming the air suction channels 31 and 41, the connecting part of the right sound attenuation box 3 with the damper frame connecting channel 27 has the same shape as the interface of the damper frame connecting channel and completely covers the frame connecting channel 27, sealingly connected with the damper frame housing, the connecting part of the right sound attenuation box 3 with the blower impeller air inlet 25 has the same shape as the impeller air inlet housing and completely covers the impeller air inlet 25, sealingly connected with the blower housing; the connecting part of the left sound attenuation box 4 with the damper frame connecting channel 27 has the same shape as the interface of the damper frame connecting channel and completely covers the frame connecting channel 27, sealingly connected with the damper frame housing, the end part of the left sound attenuation box 4 on the side of the blower motor is semicircular, completely covering the blower motor 22 and sealingly connected with the blower housing. The motor cooling air hole 45 is opened on the outer shell of the left sound attenuation box 4 in the axial direction of the blower motor 6, the opening size meets the extension of the motor cooling fan cover 23 out of the outer shell of the left sound attenuation box 4, if the motor cooling fan does not extend out of the left sound attenuation box 4, the axial opening size needs to be large enough to meet the normal flow and cooling effect of the motor cooling air. The cooling air blown by the motor cooling fan enters the blower through the U-shaped air suction channel of the burner structure, increasing the utilization rate of external air by the blower.

[0033] As shown in Figure 7 , a large enough burner air inlet 44 is opened at the bottom of the outer shell of the left sound attenuation box 4 away from the damper baffle 28, meeting the entry of combustion air for the corresponding combustion power of the burner, part of the suction air flows through the blower motor 22, enhancing the cooling effect on the motor 22. The air inlet 44 opening can be a strip-shaped hole, a square hole or a circular hole, etc. grid shape, meeting the entry of combustion air while preventing foreign matter from being sucked in.

[0034] As shown in Figure 3As shown, the paths indicated by the arrows are air intake channels 31 and 41. The inner walls of both the left and right silencers are lined with sound-absorbing material 33, meaning the entire inner wall of the air intake channels is covered with sound-absorbing material. The sound-absorbing material can be any material known in the art that has sound-absorbing or sound-absorbing effects. Examples include polyurethane foam, wool, plastic, open-cell foam materials, and similar materials.

[0035] like Figure 6 and Figure 7 As shown, in the blower-type burner, the upper part of the air duct of the right silencer box 3 is provided with the burner electrical control box base plate 35, that is, the silencer box shell above the air duct 31 is the electrical control box base plate 35. The burner electrical control box 34 is installed on the burner electrical control box base plate 35. The annular vertical surface 36 above the air duct 31 of the right silencer box 3 constitutes the housing of the electrical control box 34. The height of the annular vertical surface is sufficient to accommodate all electrical components of the burner control system, including the program controller. The top is provided with a burner electrical control box cover plate 37. Similarly, the upper part of the air duct 41 of the left silencer box 4 is provided with the electrical control box base plate 47. The motor electrical control box 46 is installed on the electrical control box base plate 47. The annular vertical surface 48 above the air duct 41 of the left silencer box 4 constitutes the housing of the electrical control box 46. The height of the annular vertical surface is sufficient to accommodate all electrical components of the motor control system, including the air switch, contactor, or frequency converter. The top is provided with a motor electrical control box cover plate 49.

[0036] The integrated blower burner consists of three modules, including a blower, an airflow regulating damper, a silencer box, and an electrical control box. This optimizes the overall structure of the burner, reducing noise while making the burner compact, easy to assemble, and lowering the overall cost.

Claims

1. A forced-draught burner for the combustion of gaseous and / or liquid fuel, characterised in that it comprises: It comprises: A blower (2), a right muffler box (3) with integrated burner electric control box (34) and a left muffler box (4) with integrated motor electric control box (46), wherein the blower (2) is provided with a frame connecting channel (27) at the front neck of the blower shell, which connects the right muffler box (3) and the left muffler box (4), and a damper baffle (28) is arranged in the frame connecting channel (27), the blower shell (21) is equipped with a blower motor (22), and the impeller (24) of the blower (2) is arranged in the blower shell (21), the outer wall of the left muffler box (4) and the right muffler box (3) is connected with the outer wall of the blower shell respectively, and is configured to form a reverse U-shaped air suction channel from the air inlet (44) through the left muffler box (4) to the frame connecting channel (27), and then from the frame connecting channel (27) through the right muffler box (3) to the impeller air inlet (25), the upper part of the right muffler box (3) is provided with a burner electric control box (34), and the upper part of the left muffler box (4) is provided with a motor electric control box (46).

2. The air-blast burner of claim 1, wherein The position of the front neck of the blower (2) shell refers to the position of the lower shell of the pipe section (26) of the blower air outlet to the edge space of the bottom of the blower shell (21), and the frame connecting channel (27) is arranged at this position.

3. The air-blast burner of claim 2, wherein The damper baffle (28) is arranged in the frame connecting channel (27) and controls the air volume of the burner through the damper actuator.

4. The air-blast burner of claim 1, wherein The right muffler box (3) and the left muffler box (4) are arc hollow inside, and the arc opening part is sealingly connected with the blower shell.

5. The air-blast burner of claim 1, wherein The shell part of the right muffler box (3) at the impeller air inlet (25) is the same shape as the blower impeller air inlet (25), completely covers the impeller air inlet (25), and is sealingly connected with the blower shell, and the shell part of the right muffler box (3) at the frame connecting channel (27) is the same shape as the damper baffle frame channel, completely covers the frame connecting channel (27), and is sealingly connected with the blower channel frame shell part.

6. The forced-draught burner according to claim 1, characterized in that The shell part of the left muffler box (4) at the frame connecting channel (27) is the same shape as the damper baffle frame channel, completely covers the frame connecting channel (27), and is sealingly connected with the blower channel frame shell part, the left muffler box (4) completely covers the blower motor (22), and is sealingly connected with the blower shell, and the bottom of the left muffler box (4) away from the damper baffle (28) is provided with an air inlet (44), which is a strip-shaped hole, a square hole or a circular hole-shaped grille.

7. The impingement burner of claim 1, wherein The motor cooling air hole (45) is opened on the shell of the left muffler box (4) along the axial direction of the blower motor (22), and the motor cooling air cover (23) is extended from the motor cooling air hole (45).

8. The air-blast burner of claim 1, wherein The inner wall (32, 42) of the air suction channel is provided with a sound absorbing material (33).

9. The air-blast burner of claim 1, wherein The upper part of the right silencer box (3) is provided with a burner electric control box bottom plate (35), the burner electric control box (34) is installed on the burner electric control box bottom plate (35), the right silencer box ring vertical surface (36) constitutes the shell of the burner electric control box (34), and the top is provided with a burner electric control box cover plate (37).

10. The air-blast burner of claim 1, wherein The upper part of the left silencer box (4) is arranged with a motor electric control box bottom plate (47), the motor electric control box (46) is installed on the motor electric control box bottom plate (47), the left silencer box ring vertical surface (48) constitutes the shell of the motor electric control box (46), and the top is provided with a motor electric control box cover plate (49).

Images