Fuel oil heater with multi-channel air guide structure and using method of fuel oil heater

Abstract

The invention relates to the technical field of fuel oil heaters, in particular to a fuel oil heater with a multi-channel air guide structure and a using method thereof.The fuel oil heater comprises a rack, an air guide fan, a gas heater, a handrail and wheels, the air guide fan and the gas heater are installed at the upper end of the rack and installed in a cylindrical protective shell, and the handrail is installed in the cylindrical protective shell; a handrail is installed on one side of the upper end of the rack, wheels are installed on the other side of the bottom end of the rack, an oxygen supply pipeline and a dustproof mechanism are installed on the air inlet side of the air guide fan, and a control mechanism is installed on one side of the dustproof mechanism and installed in the positioning mechanism. According to the heater, when the heater is idle, the air inlet side can be sealed to prevent dust attachment and improve the convenience after reuse, meanwhile, after the heater is used, the surface of the filter screen on the air inlet side can be cleaned in time to prevent the problem that the surface of the filter screen on the air inlet side is corroded due to dust attachment, and the service life of the heater is prolonged. And a good protection effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel oil heaters, and in particular to a fuel oil heater with a multi-channel air guide structure and a use method thereof. Background Art

[0002] Oil heater is a heating device that uses oil as fuel to generate heat. It generates heat energy by burning diesel, kerosene or other types of fuel to provide warmth for indoor spaces. This heater is suitable for various environments, especially those that do not have a central heating system or require temporary or supplementary heating. When the oil heater is used in plateau areas with low oxygen content in the air, in order to ensure the normal operation of the oil heater, it is necessary to add an oxygen inlet channel to ensure the normal operation of the oil heater. In order to ensure the normal operation of the oil heater, a variety of modes are set to adapt to different usage scenarios. By setting a variety of air inlet channels at the air inlet and cooperating with the air guide mechanism inside the oil heater, the stable operation of the oil heater is ensured; When a fuel oil heater is idle for a long time, if dust adheres to the air inlet, the dust needs to be cleaned when it is used, and after use, the dust on the surface of the air inlet filter needs to be cleaned to prevent dust from adhering to the surface of the air inlet filter and causing corrosion due to long-term idleness. Therefore, to address the above problems, an fuel oil heater with a multi-channel air guide structure and a method of using the same are proposed. Summary of the invention

[0003] The purpose of the present invention is to provide a fuel oil heater with a multi-channel air guide structure and a method of using the same, so as to solve the problem that if dust adheres to the air inlet of the fuel oil heater during long-term idleness, the dust in the air inlet needs to be cleared when in use, and after use, the dust on the surface of the air inlet filter needs to be cleaned to prevent dust from adhering to the surface of the air inlet filter and causing corrosion due to long-term idleness.

[0004] To achieve the above object, the present invention provides the following technical solutions: A fuel heater with a multi-channel air guide structure and a method for using the same, comprising a frame, an air guide fan, a gas heater, a handrail and a wheel, wherein the upper end of the frame is provided with an air guide fan and a gas heater, wherein the air guide fan and the gas heater are installed inside a cylindrical protective shell, a handrail is installed on one side of the upper end of the frame, and a wheel is installed on the other side of the bottom end of the frame, an oxygen supply pipeline and a dust prevention mechanism are installed on the air inlet side of the air guide fan, a control mechanism is installed on one side of the dust prevention mechanism, and the control mechanism is installed inside a positioning mechanism; the dust prevention mechanism comprises a filtering mechanism, a dust removal mechanism is installed on one side of the filtering mechanism, and a shielding mechanism is installed on one side of the dust removal mechanism; the filtering mechanism comprises a first ring plate, a hidden hole is opened on the inner side of the edge of the first ring plate, a connecting screw is installed inside the hidden hole, a filter screen is fixedly connected inside the first ring plate, and a central axis is welded and fixed in the middle of the filter screen; the dust removal mechanism comprises a gear ring, and one side of the gear ring is fixedly connected to a connecting plate through a cleaning rod; the shielding mechanism comprises a second ring plate, a fixing rod is fixedly connected inside the second ring plate, and a fan-shaped shielding cloth is fixedly connected on one side of the fixing rod.

[0005] As a further optimization of the present invention, the positioning mechanism includes a positioning plate, a guide groove is provided on the inner side of the upper end of the positioning plate, a positioning pin is installed on the upper end of the positioning plate, and the bottom end of the positioning plate is fixedly connected to the frame.

[0006] As a further optimization of the present invention, the control mechanism includes a control rod, a toothed plate is installed on one side of the upper end of the control rod, a circular plate is fixedly connected to the lower end of the control rod, a reset spring is fixedly connected to the lower end of the circular plate, the bottom end of the reset spring is fixedly connected to the connecting frame, and a first positioning hole and a second positioning hole corresponding to the positioning pin are opened at the upper end of the control rod.

[0007] As a further optimization of the present invention, the upper end of the control rod is slidably connected to the positioning plate via a guide groove, the control rod is slidably connected to the frame and the connecting frame, the connecting frame is U-shaped, and the upper end of the connecting frame is fixedly connected to the frame via bolts.

[0008] As a further optimization of the present invention, the first positioning hole and the second positioning hole are both blind holes, the center points of the first positioning hole and the second positioning hole and the positioning pin are arranged on the same vertical line, and the first positioning hole and the second positioning hole are both compatible with the positioning pin.

[0009] As a further optimization of the present invention, the first ring plate is fixedly connected to the fan guide and the cylindrical protective shell arranged outside the gas heater by connecting screws, the central axis is rotationally connected to the connecting plate, and the cleaning rod is tightly attached to the filter screen.

[0010] As a further optimization of the present invention, the gear ring is meshed with the gear plate, six cleaning rods are arranged inside the gear ring, six fan-shaped shielding cloths and six fixing rods are arranged inside the second ring plate, the cleaning rods, fan-shaped shielding cloths and fixing rods correspond one to one, and the cleaning rods are fixedly connected to the fan-shaped shielding cloth.

[0011] As a further optimized content of the present invention, wherein: the second ring plate is fixedly connected to the edge of the filter screen plate, and the second ring plate is arranged between the first ring plate and the gear ring.

[0012] As a further optimization of the present invention, shock-absorbing brackets are fixedly connected to both sides of the bottom end of one side of the frame, the shock-absorbing brackets are parallel to each other, and the oxygen supply pipeline is arranged between the fan guide air fan and the dust prevention mechanism.

[0013] As further optimized content of the present invention, the following steps are included: Step I: equipment placement and power-on: placing the entire equipment at a preset position, and after the placement is completed, powering on the entire equipment to ensure that the entire equipment can operate stably. During the placement of the entire equipment, it is necessary to pay attention to placing the equipment in a horizontal position to ensure the stability of the entire equipment during operation; Step II: The control mechanism automatically controls the folding of the fan-shaped shielding cloth: When the equipment is placed, the positioning pin is pulled. At this time, the bottom end of the control rod contacts the ground and moves upward. When the control rod moves upward, the tooth plate pushes the gear ring to rotate. When the gear ring rotates, it drives the cleaning rod to rotate and squeezes the fan-shaped shielding cloth for storage. The stored fan-shaped shielding cloth is located between the cleaning rod and the fixed rod, and no longer blocks the filter screen. Then, the positioning pin is controlled to connect with the first positioning hole to realize the positioning of the control rod. After the positioning is completed, there is a gap between the bottom of the control rod and the bottom of the shock-absorbing bracket, thereby ensuring that the shock-absorbing bracket has a shock-absorbing effect during the overall operation of the equipment; Step III: Adjust the air intake according to actual needs: According to the oxygen content in the air and the oxygen demand of the gas heater, control the air duct to simply inhale air from the filter plate side, or provide additional oxygen through the oxygen supply pipeline to ensure the operation of the gas heater, so as to prevent the fuel injection of the gas heater from failing to burn fully and causing waste; Step IV: After the heating is completed, the entire device is stored: After the heating is completed, the equipment is powered off, and then the positioning pin is pulled. At this time, the control rod is reset under the drive of the reset spring, and is connected to the second positioning hole through the positioning pin to achieve re-positioning of the control rod. After the positioning is completed, the gear ring returns to its initial position. During this process, the cleaning rod cleans the surface of the filter screen and unfolds the fan-shaped shielding cloth. At this time, the fan-shaped shielding cloth prevents dust from adhering to the surface of the filter screen when the entire device is idle. At the same time, the bottom end of the control rod is in contact with the ground, thereby preventing the shock-absorbing bracket from being affected by the gravity of the entire device and being in a compressed state for a long time, which can increase the service life of the shock-absorbing mechanism inside the shock-absorbing bracket.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the control mechanism, positioning mechanism and dust-proof mechanism are provided, so that the air inlet side can be sealed when the heater is idle to prevent dust from adhering, thereby improving the convenience after reuse. At the same time, after the heater is used, the surface of the filter screen on the air inlet side can be cleaned in time to prevent the surface of the filter screen on the air inlet side from being corroded due to dust adhering, thereby having a good protective effect. 2. In the present invention, the control rod is arranged to generate a gap with the bottom end of the shock absorbing bracket when the device is running, so as to ensure the operation of the shock absorbing mechanism. When the device is idle, the control rod is in contact with the ground, thereby preventing the shock absorbing bracket from being affected by the gravity of the entire device and being in a compressed state for a long time, thereby increasing the service life of the shock absorbing mechanism inside the shock absorbing bracket; 3. In the present invention, maintaining a suitable oxygen balance during the operation of the entire device can ensure the complete combustion of the fuel, avoid energy waste and the generation of harmful gases, and further improve the stability of the entire equipment during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 Schematic diagram of the structure at A in the middle; Figure 3 For the present invention Figure 1 Schematic diagram of the structure at B in the middle; Figure 4 It is a schematic diagram of the control mechanism structure of the present invention; Figure 5 It is a schematic diagram of the structure of the dust removal mechanism of the present invention; Figure 6 This is a schematic diagram of the shielding mechanism structure of the present invention; Figure 7 For the present invention Figure 6 Schematic diagram of the structure at point C in the middle.

[0016] In the figure: 1. Frame; 2. Fan guide; 3. Oxygen supply pipe; 4. Gas heater; 5. Shock-absorbing bracket; 6. Handrail; 7. Positioning mechanism; 71. Positioning plate; 72. Guide groove; 73. Positioning pin; 8. Control mechanism; 81. Control rod; 82. Tooth plate; 83. Circular plate; 84. Return spring; 85. First positioning hole; 86. Second positioning hole; 87. Connecting frame; 9. Dust prevention mechanism; 91. Filter mechanism; 911. First ring plate; 912. Hidden hole; 913. Connecting screw; 914. Filter screen plate; 915. Central axis; 92. dust removal mechanism; 921. gear ring; 922. cleaning rod; 923. connecting plate; 93. Shielding mechanism; 931. Second ring plate; 932. Fan-shaped shielding cloth; 933. Fixing rod; 10. Wheel. DETAILED DESCRIPTION

[0017] See also Figure 1-7 , the present invention provides a technical solution: A fuel heater with a multi-channel air guide structure and a method of using the same, comprising a frame 1, an air guide fan 2, a gas heater 4, a handrail 6 and a wheel 10, wherein the air guide fan 2 and the gas heater 4 are installed at the upper end of the frame 1, and the air guide fan 2 and the gas heater 4 are installed inside a cylindrical protective shell, a handrail 6 is installed on one side of the upper end of the frame 1, and a wheel 10 is installed on the other side of the bottom end of the frame 1, an oxygen supply pipeline 3 and a dust prevention mechanism 9 are installed on the air inlet side of the air guide fan 2, a control mechanism 8 is installed on one side of the dust prevention mechanism 9, and the control mechanism 8 is installed inside a positioning mechanism 7; the dust prevention mechanism 9 comprises a filtering mechanism 91, and a dust removal mechanism 92 is installed on one side of the filtering mechanism 91, and the dust removal mechanism 9 A shielding mechanism 93 is installed on one side of the mechanism 92; the filtering mechanism 91 includes a first ring plate 911, a hidden hole 912 is opened on the inner side of the edge of the first ring plate 911, a connecting screw 913 is installed inside the hidden hole 912, a filter screen plate 914 is fixedly connected to the inside of the first ring plate 911, and a center axis 915 is welded and fixed in the middle of the filter screen plate 914, the dust removal mechanism 92 includes a gear ring 921, one side of the gear ring 921 is fixedly connected to a connecting plate 923 through a cleaning rod 922, the shielding mechanism 93 includes a second ring plate 931, a fixing rod 933 is fixedly connected to the inside of the second ring plate 931, and a fan-shaped shielding cloth 932 is fixedly connected to one side of the fixing rod 933.

[0018] As a further technical solution for the implementation of this scheme, the positioning mechanism 7 includes a positioning plate 71, a guide groove 72 is provided on the inner side of the upper end of the positioning plate 71, a positioning pin 73 is installed on the upper end of the positioning plate 71, and the bottom end of the positioning plate 71 is fixedly connected to the frame 1. Through the above arrangement, the control rod 81 can be stably limited, and the stability of the control rod 81 during the movement process can be ensured; As a technical solution for further implementation of this scheme, the control mechanism 8 includes a control rod 81, a tooth plate 82 is installed on one side of the upper end of the control rod 81, a circular plate 83 is fixedly connected to the lower end of the control rod 81, a return spring 84 is fixedly connected to the lower end of the circular plate 83, and the bottom end of the return spring 84 is fixedly connected to the connecting frame 87. The upper end of the control rod 81 is provided with a first positioning hole 85 and a second positioning hole 86 corresponding to the positioning pin 73. Through the control mechanism 8 set as above, the position of the gear ring 921 can be controlled by moving the control rod 81; As a technical solution further implemented in this scheme, the upper end of the control rod 81 is slidably connected to the positioning plate 71 through the guide groove 72, and the control rod 81 is slidably connected to the frame 1 and the connecting frame 87. The connecting frame 87 is U-shaped, and the upper end of the connecting frame 87 is fixedly connected to the frame 1 through bolts. Through the above arrangement, the stability of the entire device during use can be further improved; As a further technical solution of the present invention, the first positioning hole 85 and the second positioning hole 86 are both blind holes. The first positioning hole 85 and the second positioning hole 86 are arranged on the same vertical line as the center point of the positioning pin 73. The first positioning hole 85 and the second positioning hole 86 are both matched with the positioning pin 73. Through the above arrangement, the stability of the positioning pin 73 in the process of positioning the control rod 81 can be ensured; As a technical solution for further implementation of this solution, the first ring plate 911 is fixedly connected to the guide fan 2 and the cylindrical protective housing provided outside the gas heater 4 by connecting screws 913, the central axis 915 is rotatably connected to the connecting plate 923, and the cleaning rod 922 is in close contact with the filter screen plate 914. Through the above arrangement, it is convenient to clean the surface of the filter screen plate 94 later; As a technical solution for further implementation of this solution, the gear ring 921 is meshed with the gear plate 82, six cleaning rods 922 are arranged inside the gear ring 921, six fan-shaped shielding cloths 932 and six fixing rods 933 are arranged inside the second ring plate 931, and there is a one-to-one correspondence between the cleaning rods 922, the fan-shaped shielding cloths 932 and the fixing rods 933, and the cleaning rods 922 and the fan-shaped shielding cloths 932 are fixedly connected. Through the above arrangement, the filter screen plate 914 can be protected by the fan-shaped shielding cloths 932; As a further technical solution of this solution, the second ring plate 931 is fixedly connected to the edge of the filter screen plate 914, and the second ring plate 931 is arranged between the first ring plate 911 and the gear ring 921, which can improve the rationality of the overall assembly of the dustproof mechanism 9; As a technical solution for further implementing the present scheme, shock-absorbing brackets 5 are fixedly connected to both sides of the bottom end of one side of the frame 1, and the shock-absorbing brackets 5 are parallel to each other. The oxygen supply pipe 3 is arranged between the fan 2 and the dust-proof mechanism 9, which can have a shock-absorbing effect during the overall operation of the equipment to improve the stability of the overall operation of the equipment.

[0019] As a technical solution for further implementing this solution, the following steps are included: Step I: Equipment placement and power-on: Place the entire device at a preset position. After placement, power on the entire device to ensure that the entire device can operate stably. During the placement of the entire device, it is necessary to place the device in a horizontal position to ensure the stability of the entire device during operation; Step II: The control mechanism 8 automatically controls the folding of the fan-shaped shielding cloth 932: When the equipment is placed, the positioning pin 73 is pulled. At this time, the bottom end of the control rod 81 contacts the ground and moves upward. When the control rod 81 moves upward, the tooth plate 82 pushes the gear ring 921 to rotate. When the gear ring 921 rotates, it drives the cleaning rod 922 to rotate and squeezes the fan-shaped shielding cloth 932 for storage. The stored fan-shaped shielding cloth 932 is located between the cleaning rod 922 and the fixing rod 933, and no longer blocks the filter screen 914. Then the positioning pin 73 is controlled to connect with the first positioning hole 85 to realize the positioning of the control rod 81. After the positioning is completed, there is a gap between the bottom of the control rod 81 and the bottom of the shock-absorbing bracket 5, thereby ensuring that the shock-absorbing bracket 5 has a shock-absorbing effect during the overall operation of the equipment; Step III: Adjust the air intake according to actual needs: According to the oxygen content in the air and the oxygen demand of the gas heater 4, control the duct fan 2 to simply inhale air from the filter screen 914 side, or provide additional oxygen through the oxygen supply pipe 3 to ensure the operation of the gas heater 4, so as to prevent the fuel injection of the gas heater 4 from failing to burn fully, resulting in waste; Step IV: After the heating is completed, the entire device is stored: After the heating is completed, the device is powered off, and then the positioning pin 73 is pulled. At this time, the control rod 81 is reset under the drive of the reset spring 84, and is connected to the second positioning hole 86 through the positioning pin 73 to achieve the re-positioning of the control rod 81. After the positioning is completed, the ring gear 921 returns to its initial position. During this process, the cleaning rod 922 cleans the surface of the filter screen 914 and unfolds the fan-shaped shielding cloth 932. At this time, the fan-shaped shielding cloth 932 prevents the dust from adhering to the surface of the filter screen 914 when the entire device is idle. At the same time, the bottom end of the control rod 81 contacts the ground, thereby preventing the shock-absorbing bracket 5 from being affected by the gravity of the entire device and being in a compressed state for a long time, which can increase the service life of the shock-absorbing mechanism inside the shock-absorbing bracket 5.

[0020] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A fuel heater with a multi-channel air guide structure, comprising a frame (1), an air guide fan (2), a gas heater (4), a handrail (6) and wheels (10), characterized in that: The upper end of the frame (1) is equipped with an air guide fan (2) and a gas heater (4), the air guide fan (2) and the gas heater (4) are installed inside a cylindrical protective shell, one side of the upper end of the frame (1) is equipped with a handrail (6), the other side of the bottom end of the frame (1) is equipped with a wheel (10), the air inlet side of the air guide fan (2) is equipped with an oxygen supply pipe (3) and a dust prevention mechanism (9), one side of the dust prevention mechanism (9) is equipped with a control mechanism (8), and the control mechanism (8) is installed inside the positioning mechanism (7); The dust prevention mechanism (9) comprises a filtering mechanism (91), a dust removal mechanism (92) is installed on one side of the filtering mechanism (91), and a shielding mechanism (93) is installed on one side of the dust removal mechanism (92); The filtering mechanism (91) comprises a first ring plate (911), a hidden hole (912) is provided on the inner side of the edge of the first ring plate (911), a connecting screw (913) is installed inside the hidden hole (912), a filter screen plate (914) is fixedly connected inside the first ring plate (911), a central axis (915) is welded and fixed in the middle of the filter screen plate (914), the dust removal mechanism (92) comprises a gear ring (921), one side of the gear ring (921) is fixedly connected to a connecting plate (923) via a cleaning rod (922), and the shielding mechanism (93) comprises a second ring plate (931), the second ring plate (931) is fixedly connected to a fixing rod (933), and one side of the fixing rod (933) is fixedly connected to a fan-shaped shielding cloth (932).

2. The fuel heater with a multi-channel air guide structure according to claim 1, characterized in that: The positioning mechanism (7) comprises a positioning plate (71), a guide groove (72) is provided on the inner side of the upper end of the positioning plate (71), a positioning pin (73) is mounted on the upper end of the positioning plate (71), and the bottom end of the positioning plate (71) is fixedly connected to the frame (1).

3. The fuel heater with a multi-channel air guide structure according to claim 1, characterized in that: The control mechanism (8) comprises a control rod (81), a toothed plate (82) is mounted on one side of the upper end of the control rod (81), a circular plate (83) is fixedly connected to the lower end of the control rod (81), a return spring (84) is fixedly connected to the lower end of the circular plate (83), the bottom end of the return spring (84) is fixedly connected to a connecting frame (87), and a first positioning hole (85) and a second positioning hole (86) corresponding to the positioning pin (73) are formed at the upper end of the control rod (81).

4. The fuel heater with a multi-channel air guide structure according to claim 3, characterized in that: The upper end of the control rod (81) is slidably connected to the positioning plate (71) via a guide groove (72); the control rod (81) is slidably connected to the frame (1) and the connecting frame (87); the connecting frame (87) is U-shaped; the upper end of the connecting frame (87) is fixedly connected to the frame (1) via bolts.

5. The fuel heater with a multi-channel air guide structure according to claim 3, characterized in that: The first positioning hole (85) and the second positioning hole (86) are both blind holes. The center points of the first positioning hole (85) and the second positioning hole (86) and the positioning pin (73) are arranged on the same vertical line. The first positioning hole (85) and the second positioning hole (86) are both compatible with the positioning pin (73).

6. The oil heater with a multi-channel air guide structure according to claim 1, characterized in that: The first ring plate (911) is fixedly connected to the ducting fan (2) and a cylindrical protective housing provided outside the gas heater (4) via connecting screws (913); the central shaft (915) is rotationally connected to the connecting plate (923); and the cleaning rod (922) is in close contact with the filter screen plate (914).

7. The oil heater with a multi-channel air guide structure according to claim 1, characterized in that: The gear ring (921) is meshed with the gear plate (82); six cleaning rods (922) are arranged inside the gear ring (921); six fan-shaped shielding cloths (932) and six fixing rods (933) are arranged inside the second ring plate (931); the cleaning rods (922), the fan-shaped shielding cloths (932) and the fixing rods (933) correspond to each other one by one; and the cleaning rods (922) and the fan-shaped shielding cloths (932) are fixedly connected.

8. The oil heater with a multi-channel air guide structure according to claim 1, characterized in that: The second ring plate (931) is fixedly connected to the edge of the filter screen plate (914), and the second ring plate (931) is arranged between the first ring plate (911) and the gear ring (921).

9. The oil heater with a multi-channel air guide structure according to claim 1, characterized in that: Shock-absorbing brackets (5) are fixedly connected to both sides of the bottom end of one side of the frame (1), and the shock-absorbing brackets (5) are parallel to each other. The oxygen supply pipe (3) is arranged between the fan (2) and the dust-proof mechanism (9).

10. A method for using a fuel heater with a multi-channel air guide structure according to any one of claims 1 to 9, characterized in that: The following steps are included: Step I: Equipment placement and power-on: Place the entire device at a preset location. After placement, power on the entire device to ensure that the entire device can operate stably. During the placement of the entire device, it is necessary to place the device in a horizontal position to ensure the stability of the entire device during operation; Step II: The control mechanism (8) automatically controls the folding of the fan-shaped shielding cloth (932): When the device is placed, the positioning pin (73) is pulled. At this time, the bottom end of the control rod (81) contacts the ground and moves upward. When the control rod (81) moves upward, the tooth plate (82) pushes the gear ring (921) to rotate. When the gear ring (921) rotates, it drives the cleaning rod (922) to rotate and squeezes the fan-shaped shielding cloth (932) for storage. After storage, the fan-shaped shielding cloth (932) is located between the cleaning rod (922) and the fixing rod (933) and no longer blocks the filter screen (914). Then, the positioning pin (73) is controlled to connect with the first positioning hole (85) to realize the positioning of the control rod (81). After the positioning is completed, there is a gap between the bottom of the control rod (81) and the bottom of the shock-absorbing bracket (5), thereby ensuring that the shock-absorbing bracket (5) has a shock-absorbing effect during the overall operation of the device. Step III: adjusting the air intake according to actual needs: according to the oxygen content in the air and the oxygen demand of the gas heater (4), controlling the duct fan (2) to simply inhale air from the filter screen (914) side, or to provide additional oxygen through the oxygen supply pipe (3) to ensure the operation of the gas heater (4), so as to prevent the fuel injection of the gas heater (4) from failing to burn fully, resulting in waste; Step IV: After the heating is completed, the entire device is stored: After the heating is completed, the device is powered off, and then the positioning pin (73) is pulled. At this time, the control rod (81) is reset under the drive of the reset spring (84), and is connected to the second positioning hole (86) through the positioning pin (73), so that the control rod (81) is re-positioned. After the positioning is completed, the gear ring (921) returns to the initial position. During this process, the cleaning rod (922) cleans the surface of the filter screen (914) and unfolds the fan-shaped shielding cloth (932). At this time, the fan-shaped shielding cloth (932) prevents the entire device from being idle. The dust adheres to the surface of the filter screen (914). At the same time, the bottom end of the control rod (81) contacts the ground, thereby preventing the shock-absorbing bracket (5) from being affected by the gravity of the entire device and being in a compressed state for a long time, which can increase the service life of the shock-absorbing mechanism inside the shock-absorbing bracket (5).

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