Efficient energy-saving rail transit air conditioner heater

Abstract

The invention relates to the technical field of air conditioner heaters, and discloses an efficient and energy-saving rail transit air conditioner heater which solves the problem that at present, the heater is inconvenient to mount quickly, the efficient and energy-saving rail transit air conditioner heater comprises a heater shell, an adjusting mechanism is arranged on the outer side of the heater shell, and a limiting mechanism is arranged on the adjusting mechanism; a heating mechanism is arranged in the heater shell, an air outlet pipe and an air inlet pipe are fixedly connected to the two sides of the heater shell correspondingly, the adjusting mechanism comprises a side frame fixed to the outer side of the heater shell, an inner rod is fixedly connected to the inner side of the side frame, and the outer side of the inner rod is symmetrically and movably sleeved with two movable blocks; side plates are fixedly connected to the upper side and the lower side of the movable block, limiting wheels attached to the heater shell are arranged on the outer sides of the side plates, and supporting shafts are rotationally connected to the sides, away from the limiting wheels, of the side plates; according to the mounting device, the mounting plates can rotate conveniently, then the multiple mounting plates can rotate at the same time to adjust the positions of the mounting holes, and therefore the heater shell can be quickly mounted conveniently.

Description

Technical Field

[0001] The present invention belongs to the technical field of air-conditioning heaters, and in particular relates to a high-efficiency and energy-saving rail transit air-conditioning heater. Background Art

[0002] The air conditioner heater uses the heat released by the electric heating element to heat the air. When the current passes through the heating element, the heating element itself will heat up due to the thermal effect of the current, and transfer the heat to the surrounding air, so that the air temperature rises. According to the patent document entitled "An Electric Heater for High-speed Railway Air Conditioner" with the authorization announcement number of CN217730433U, the mounting rods hinged with the insulation shell are installed at the four corners of the bottom of the insulation shell, and a plurality of mounting holes are opened on the mounting rods. The personnel can adjust the installation position of the electric heater by rotating the mounting rods, making the installation of the electric heater in the high-speed railway carriage more convenient; but there are still the following defects:

[0003] It is necessary to rotate a plurality of mounting rods to adjust the positions of the mounting holes, resulting in the need for multiple operations, making it inconvenient to quickly install the heater. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a high-efficiency and energy-saving rail transit air-conditioning heater, which effectively solves the problem that it is currently inconvenient to quickly install the heater.

[0005] To achieve the above object, the present invention provides the following technical solution: an energy-saving rail transit air-conditioning heater, comprising a heater shell, an adjustment mechanism is provided on the outer side of the heater shell, a limit mechanism is provided on the adjustment mechanism, a heating mechanism is provided inside the heater shell, and an air outlet pipe and an air inlet pipe are fixedly connected to both sides of the heater shell;

[0006] The adjusting mechanism includes a side frame fixed to the outer side of the heater shell, an inner rod is fixedly connected to the inner side of the side frame, two movable blocks are symmetrically and movably sleeved on the outer side of the inner rod, side plates are fixedly connected to the upper and lower sides of the movable blocks, and a limiting wheel is provided on the outer side of the side plate, which fits the heater shell, and a side of the side plate away from the limiting wheel is rotatably connected to a support shaft, an end of the support shaft away from the side plate is fixedly connected to a mounting plate, a plurality of mounting holes are provided on the mounting plate, a sliding groove is provided on the side of the mounting plate close to the heater shell, a sliding rod is fixedly connected in the sliding groove, a slider is movably sleeved on the outer side of the sliding rod, a side shaft is fixedly connected to the side of the slider close to the heater shell, and an end of the side shaft away from the slider is rotatably connected to the side frame.

[0007] Preferably, a fixed block is fixedly sleeved on the middle part of the outer side of the inner rod, two guide columns are symmetrically fixedly connected between the top of the fixed block and the side frame, a guide plate is movably sleeved between the two guide columns, two movable rods are symmetrically rotatably connected on the outer side of the guide plate, the ends of the two movable rods away from the guide plate are respectively rotatably connected to the tops of the two movable blocks, the top of the fixed block is rotatably connected to a screw located between the two guide columns, and the guide plate is threadedly sleeved on the outer side of the screw.

[0008] Preferably, a top box is fixedly installed between the top of the heater housing and the side frame, the top end of the screw is fixedly connected to a top shaft, the top end of the top shaft extends into the top box and is fixedly connected to a driven bevel gear, the inside of the top box is rotatably connected to a driving shaft, a driving bevel gear is fixedly installed on the outside of the driving shaft, and the driving bevel gear is meshingly connected to the driven bevel gear.

[0009] Preferably, an outer disk is movably sleeved on the outer side of the driving shaft, an outer cylinder is fixedly connected to the side of the outer disk away from the driving bevel gear, the outer cylinder is movably mounted on the outer side of the driving shaft, a hand wheel is fixedly mounted on the outer side of the outer cylinder, a pressing disk is fixedly connected to the end of the outer cylinder away from the outer disk, a through hole is provided on the top box, the pressing disk is located in the through hole, and a through groove corresponding to the hand wheel is provided on the top box.

[0010] Preferably, a limiting groove is provided on the driving shaft, a limiting rod is slidably connected in the limiting groove, and the limiting rod is fixed to the inner side of the outer disk.

[0011] Preferably, the limiting mechanism includes a U-shaped round rod fixed between the fixed block and the side frame, a positioning cylinder is fixedly sleeved on the middle outer side of the U-shaped round rod, a slide is movably sleeved on the outer side of the U-shaped round rod, a plurality of insertion holes are evenly arranged on the side of the slide away from the positioning cylinder, a side of the guide plate close to the slide is fixedly connected with an insertion rod, the insertion rod is inserted into the corresponding insertion hole, and a return spring is fixedly connected between the fixed block and the side frame and the slide, and the two return springs are sleeved on the outer side of the U-shaped round rod.

[0012] Preferably, a bracket is fixedly connected to the top of the skateboard, the bracket is located on the outside of the drive shaft, a side ring is fixedly connected to the bracket, the side ring is located on the outside of the drive shaft and does not contact the drive shaft, a plurality of side rods are fixedly connected at equal angles to the side of the outer disk away from the outer cylinder, and a ball is provided at one end of each side rod away from the outer disk for abutting against the side ring.

[0013] Preferably, the heating mechanism includes two electric heating tubes symmetrically arranged in the heater housing, and heat conducting plates are fixedly installed on the outer sides of the two electric heating tubes. A plurality of heat dissipating fins are fixedly connected at equal distances on the sides of the two heat conducting plates close to each other, and each heat dissipating fin is inclined, and the upper heat dissipating fin is staggered with the lower heat dissipating fin. A tube head is provided at one end of the two electric heating tubes, and connecting wires are connected to the two tube heads, and one end of the two connecting wires extends to the outside of the heater housing.

[0014] Preferably, an air inlet and an air outlet are respectively provided on both sides of the heater housing, the air inlet and the air outlet correspond to the air inlet pipe and the air outlet pipe respectively, and a heating wire is provided in the air outlet.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention facilitates the rotation of the drive shaft through the cooperation among the hand wheel, the outer cylinder, the outer disk, the limit rod and the limit groove, and facilitates the sliding of the guide plate along the two guide columns through the cooperation among the driving bevel gear and the driven bevel gear and the top shaft and the screw rod, and facilitates the horizontal movement of the side plate through the cooperation among the movable rod and the movable block and the inner rod, and facilitates the rotation of the mounting plate through the cooperation among the support shaft, the mounting plate, the sliding rod, the slider and the side shaft, and then enables multiple mounting plates to rotate simultaneously to adjust the position of the mounting holes, thereby facilitating the rapid installation of the heater housing.

[0017] 2. The invention facilitates the insertion of the insertion rod into the corresponding insertion hole through the cooperation between the U-shaped round rod, the slide plate and the return spring, and can limit the position of the guide plate, thereby ensuring the stability of the mounting plate.

[0018] 3. The invention heats the air entering the heater housing by means of the cooperation between the electric heating tube, the heat conducting plate and the heat dissipating fin plate, and arranges an electric heating wire in the air outlet to further heat the air, thereby achieving a high efficiency and energy saving effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0020] In the attached picture:

[0021] Figure 1 This is a schematic diagram of the structure of the high-efficiency energy-saving rail transit air-conditioning heater of the present invention;

[0022] Figure 2 It is a schematic diagram of the cross-sectional structure of the heater housing of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the regulating mechanism of the present invention;

[0024] Figure 4 This is a schematic diagram of the mounting plate structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of the fixed block of the present invention;

[0026] Figure 6 It is a schematic diagram of the cross-sectional structure of the top box of the present invention;

[0027] Figure 7 This is a schematic diagram of the disassembled structure of the drive shaft and the outer cylinder of the present invention;

[0028] Figure 8 It is a schematic diagram of the structure of the limiting mechanism of the present invention;

[0029] Fig. 9 This is a schematic diagram of the structure of the skateboard of the present invention;

[0030] Fig.10 This is a schematic diagram of the support structure of the present invention;

[0031] Fig.11 It is a schematic diagram of the heating mechanism structure of the present invention.

[0032] In the figure: 1, heater housing; 2, adjustment mechanism; 201, side frame; 202, inner rod; 203, fixed block; 204, movable block; 205, side plate; 206, mounting plate; 207, top box; 208, slider; 209, slide rod; 2010, mounting hole; 2011, slide groove; 2012, side shaft; 2013, support shaft; 2014, limit wheel; 2015, movable rod; 2016, through groove; 2017, top shaft; 2018, guide column; 2019, guide plate; 2020, screw; 2021, driven bevel gear; 2022, drive shaft; 2023, drive Moving bevel gear; 2024, hand wheel; 2025, pressing plate; 2026, outer cylinder; 2027, outer plate; 2028, limiting rod; 2029, limiting groove; 3, limiting mechanism; 301, U-shaped round rod; 302, slide plate; 303, bracket; 304, return spring; 305, jack; 306, plug rod; 307, positioning cylinder; 308, ball bearing; 309, side ring; 3010, side rod; 4, heating mechanism; 401, electric heating tube; 402, heat dissipation fin plate; 403, heat conduction plate; 404, tube head; 405, connecting line; 5, heating wire; 6, air outlet pipe; 7, air inlet pipe. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] Embodiment 1, by Figure 1-Figure 11The present invention relates to a high-efficiency and energy-saving rail transit air-conditioning heater, comprising a heater shell 1, an adjusting mechanism 2 is provided on the outer side of the heater shell 1, a limiting mechanism 3 is provided on the adjusting mechanism 2, a heating mechanism 4 is provided inside the heater shell 1, and an air outlet pipe 6 and an air inlet pipe 7 are fixedly connected to both sides of the heater shell 1.

[0035] Embodiment 2, on the basis of embodiment 1, the adjustment mechanism 2 comprises a side frame 201 fixed to the outer side of the heater housing 1, the inner side of the side frame 201 is fixedly connected with an inner rod 202, the outer side of the inner rod 202 is symmetrically and movably sleeved with two movable blocks 204, the upper and lower sides of the movable blocks 204 are fixedly connected with side plates 205, the outer side of the side plate 205 is provided with a limiting wheel 2014 that fits the heater housing 1, and the limiting wheel 2014 is arranged to abut against the heater housing 1 to ensure the stability of the side plate 205 when moving, the side of the side plate 205 away from the limiting wheel 2014 is rotatably connected with a support shaft 2013, and the end of the support shaft 2013 away from the side plate 205 is fixedly connected with a mounting plate 206, and a plurality of mounting holes 2010 are provided on the mounting plate 206. A slide groove 2011 is provided on the side of the mounting plate 206 close to the heater housing 1, a slide rod 209 is fixedly connected in the slide groove 2011, a slider 208 is movably sleeved on the outer side of the slider 209, a side shaft 2012 is fixedly connected to the side of the slider 208 close to the heater housing 1, and the end of the side shaft 2012 away from the slider 208 is rotatably connected to the side frame 201, a fixed block 203 is fixedly sleeved on the middle part of the outer side of the inner rod 202, two guide columns 2018 are symmetrically fixedly connected between the top of the fixed block 203 and the side frame 201, a guide plate 2019 is movably sleeved between the two guide columns 2018, and two movable rods 2015 are symmetrically rotatably connected to the outer side of the guide plate 2019, and the ends of the two movable rods 2015 away from the guide plate 2019 are respectively The top of the fixed block 203 is rotatably connected to the top of the two movable blocks 204, and the top of the fixed block 203 is rotatably connected to a screw rod 2020 located between the two guide columns 2018. The guide plate 2019 is threadedly sleeved on the outside of the screw rod 2020. A top box 207 is fixedly installed between the top of the heater housing 1 and the side frame 201. The top of the screw rod 2020 is fixedly connected to a top shaft 2017. The top of the top shaft 2017 extends into the top box 207 and is fixedly connected to a driven bevel gear 2021. The inside of the top box 207 is rotatably connected to a drive shaft 2022, and a drive bevel gear 2023 is fixedly installed on the outside of the drive shaft 2022. The drive bevel gear 2023 is meshed with the driven bevel gear 2021, and the outer side of the drive shaft 2022 is movably sleeved with an outer disk 2027 , an outer cylinder 2026 is fixedly connected to one side of the outer disk 2027 away from the driving bevel gear 2023, and the outer cylinder 2026 is movably installed on the outer side of the driving shaft 2022. A hand wheel 2024 is fixedly installed on the outer side of the outer cylinder 2026, and a pressing plate 2025 is fixedly connected to one end of the outer cylinder 2026 away from the outer disk 2027. A through hole is provided on the top box 207, and the pressing plate 2025 is located in the through hole. A through groove 2016 corresponding to the hand wheel 2024 is provided on the top box 207. By providing the through groove 2016, it is convenient to enter the top box 207 to rotate the hand wheel 2024. A limiting groove 2029 is provided on the driving shaft 2022, and a limiting rod 2028 is slidably connected in the limiting groove 2029, and the limiting rod 2028 is fixed to the inner side of the outer disk 2027;

[0036] First, rotate the handwheel 2024 to drive the outer cylinder 2026 and the outer disk 2027 to rotate, and through the cooperation between the limit rod 2028 and the limit groove 2029, drive the driving shaft 2022 to rotate, and drive the driving bevel gear 2023 to rotate. Since the driving bevel gear 2023 is meshed and connected with the driven bevel gear 2021, it drives the top shaft 2017 to rotate. At this time, the screw 2020 rotates accordingly, and then drives the guide plate 2019 to slide along the two guide columns 2018, and then drives the two movable blocks 204 to slide along the inner rod 202 through the two movable rods 2015. At the same time, each side plate 205 moves horizontally and drives the mounting plate 206 to rotate. At the same time, the slider 208 slides along the slide rod 209. Finally, multiple mounting plates 206 are rotated at the same time to adjust the position of the mounting hole 2010 to achieve rapid installation of the heater housing 1.

[0037] Embodiment 3, on the basis of embodiment 1, the limiting mechanism 3 includes a U-shaped round rod 301 fixed between the fixed block 203 and the side frame 201, a positioning cylinder 307 is fixedly sleeved on the middle part of the outer side of the U-shaped round rod 301, a slide plate 302 is movably sleeved on the outer side of the U-shaped round rod 301, a plurality of plug holes 305 are evenly arranged on the side of the slide plate 302 away from the positioning cylinder 307, a plug rod 306 is fixedly connected to the side of the guide plate 2019 close to the slide plate 302, and the plug rod 306 is inserted into the corresponding plug hole 305, and a reset spring 304 is fixedly connected between the fixed block 203 and the side frame 201 and the slide plate 302, and the two reset springs 304 are sleeved on the U-shaped round rod 301. On the outside, a bracket 303 is fixedly connected to the top of the slide plate 302, and the bracket 303 is located on the outside of the drive shaft 2022. A side ring 309 is fixedly connected to the bracket 303, and the side ring 309 is located on the outside of the drive shaft 2022 and does not contact the drive shaft 2022. A plurality of side rods 3010 are fixedly connected at equal angles to the side of the outer disk 2027 away from the outer cylinder 2026, and a ball 308 abutting against the side ring 309 is provided at one end of each side rod 3010 away from the outer disk 2027. A plurality of ball 308 is arranged between the outer disk 2027 and the side ring 309 to avoid direct contact between the outer disk 2027 and the side ring 309, thereby reducing the friction force on the outer disk 2027 when rotating;

[0038] First, push the pressing plate 2025 to drive the outer cylinder 2026 to move, and drive the outer disk 2027 to move horizontally, then drive the side ring 309 and the bracket 303 to move, and at the same time the slide plate 302 slides along the U-shaped round rod 301. At this time, the two return springs 304 are stretched until the slide plate 302 abuts against the positioning cylinder 307. At this time, the insertion rod 306 moves out of the corresponding insertion hole 305, and the restriction effect on the guide plate 2019 is released, so that the hand wheel 2024 can be rotated to make the guide plate 2019 move longitudinally, so that the mounting plate 206 can be rotated to adjust the position of the mounting hole 2010. When the pressing plate 2025 is released, the slide plate 302 slides along the U-shaped round rod 301 and approaches the guide plate 2019 under the action of the elastic force of the two return springs 304 until the insertion rod 306 is inserted into the corresponding insertion hole 305, supporting and limiting the guide plate 2019, and finally ensuring the stability of the mounting plate 206.

[0039] Embodiment 4, on the basis of embodiment 1, the heating mechanism 4 comprises two electric heating tubes 401 symmetrically arranged in the heater housing 1, the outer sides of the two electric heating tubes 401 are fixedly mounted with heat conducting plates 403, a plurality of heat dissipating fins 402 are fixedly connected at equal distances on the sides of the two heat conducting plates 403 close to each other, each heat dissipating fin 402 is tilted, and the upper heat dissipating fin 402 is staggered with the lower heat dissipating fin 402, one end of the two electric heating tubes 401 is provided with a tube head 404, the two tube heads 404 are connected with connecting wires 405, one end of the two connecting wires 405 extends to the outside of the heater housing 1, and air inlets and air outlets are respectively provided on both sides of the heater housing 1, the air inlets and air outlets correspond to the air inlet pipe 7 and the air outlet pipe 6 respectively, and an electric heating wire 5 is provided in the air outlet;

[0040] First, connect the two connecting wires 405 to the power supply. At this time, the two electric heating tubes 401 heat up and transfer the heat to each heat dissipation fin 402. When the air passes through the air inlet pipe 7 and enters the heater housing 1, the air passes through each heat dissipation fin 402 in turn and is heated. When the air passes through the air outlet, the air is heated again by the electric heating wire 5, and finally the high efficiency and energy saving of the entire heater are achieved.

Claims

1. A high-efficiency and energy-saving rail transit air-conditioning heater, comprising a heater housing (1), characterized in that: An adjusting mechanism (2) is provided on the outer side of the heater shell (1), a limiting mechanism (3) is provided on the adjusting mechanism (2), a heating mechanism (4) is provided inside the heater shell (1), and an air outlet pipe (6) and an air inlet pipe (7) are respectively fixedly connected to both sides of the heater shell (1); The adjustment mechanism (2) comprises a side frame (201) fixed to the outside of the heater housing (1); an inner rod (202) is fixedly connected to the inside of the side frame (201); two movable blocks (204) are symmetrically and movably sleeved on the outside of the inner rod (202); side plates (205) are fixedly connected to the upper and lower sides of the movable blocks (204); a limiting wheel (2014) that fits the heater housing (1) is provided on the outside of the side plate (205); a side of the side plate (205) that is away from the limiting wheel (2014) is rotatably connected to a support shaft (2013); and the support shaft (2013) is away from the limiting wheel (2014). One end of the side plate (205) is fixedly connected to a mounting plate (206), a plurality of mounting holes (2010) are provided on the mounting plate (206), a slide groove (2011) is provided on a side of the mounting plate (206) close to the heater housing (1), a slide rod (209) is fixedly connected in the slide groove (2011), a slider (208) is movably sleeved on the outer side of the slide rod (209), a side shaft (2012) is fixedly connected to a side of the slider (208) close to the heater housing (1), and an end of the side shaft (2012) away from the slider (208) is rotatably connected to the side frame (201).

2. The high-efficiency and energy-saving rail transit air-conditioning heater according to claim 1, characterized in that: A fixed block (203) is fixedly sleeved on the middle part of the outer side of the inner rod (202); two guide columns (2018) are symmetrically fixedly connected between the top of the fixed block (203) and the side frame (201); a guide plate (2019) is movably sleeved between the two guide columns (2018); two movable rods (2015) are symmetrically rotatably connected on the outer side of the guide plate (2019); one end of the two movable rods (2015) away from the guide plate (219) is rotatably connected to the top of the two movable blocks (204); the top of the fixed block (203) is rotatably connected to a screw rod (2020) located between the two guide columns (2018); and the guide plate (2019) is threadedly sleeved on the outer side of the screw rod (2020).

3. The high-efficiency and energy-saving rail transit air-conditioning heater according to claim 1, characterized in that: A top box (207) is fixedly installed between the top of the heater housing (1) and the side frame (201); the top end of the screw rod (2020) is fixedly connected to a top shaft (2017); the top end of the top shaft (2017) extends into the top box (207) and is fixedly connected to a driven bevel gear (2021); the interior of the top box (207) is rotatably connected to a drive shaft (2022); a drive bevel gear (2023) is fixedly installed on the outside of the drive shaft (2022); and the drive bevel gear (2023) is meshingly connected to the driven bevel gear (2021).

4. The high-efficiency and energy-saving rail transit air-conditioning heater according to claim 3, characterized in that: The outer side of the driving shaft (2022) is movably sleeved with an outer disk (2027); the side of the outer disk (2027) away from the driving bevel gear (2023) is fixedly connected with an outer cylinder (2026); the outer cylinder (2026) is movably mounted on the outer side of the driving shaft (2022); a hand wheel (2024) is fixedly mounted on the outer side of the outer cylinder (2026); the end of the outer cylinder (2026 away from the outer disk (2027) is fixedly connected with a pressing disk (2025); a through hole is provided on the top box (207); the pressing disk (2025) is located in the through hole; and a through groove (2016) corresponding to the hand wheel (2024) is provided on the top box (207).

5. The high-efficiency and energy-saving rail transit air-conditioning heater according to claim 3, characterized in that: The driving shaft (2022) is provided with a limiting groove (2029), a limiting rod (2028) is slidably connected in the limiting groove (2029), and the limiting rod (2028) is fixed to the inner side of the outer disk (2027).

6. The high-efficiency and energy-saving rail transit air-conditioning heater according to claim 1, characterized in that: The limiting mechanism (3) comprises a U-shaped round rod (301) fixed between a fixed block (203) and a side frame (201); a positioning cylinder (307) is fixedly sleeved on the middle part of the outer side of the U-shaped round rod (301); a slide plate (302) is movably sleeved on the outer side of the U-shaped round rod (301); a plurality of insertion holes (305) are evenly arranged on the side of the slide plate (302) away from the positioning cylinder (307); a plug rod (306) is fixedly connected to the side of the guide plate (2019) close to the slide plate (302); the plug rod (306) is inserted into the corresponding plug hole (305); a return spring (304) is fixedly connected between the fixed block (203) and the side frame (201) and the slide plate (302); and the two return springs (304) are sleeved on the outer side of the U-shaped round rod (301).

7. The high-efficiency and energy-saving rail transit air-conditioning heater according to claim 6, characterized in that: A bracket (303) is fixedly connected to the top of the slide plate (302), the bracket (303) is located on the outside of the drive shaft (2022), a side ring (309) is fixedly connected to the bracket (303), the side ring (309) is located on the outside of the drive shaft (2022) and does not contact the drive shaft (2022), a plurality of side rods (3010) are fixedly connected at equal angles to a side of the outer disk (2027) away from the outer cylinder (2026), and a ball (308) abutting against the side ring (309) is provided at one end of each side rod (3010) away from the outer disk (2027).

8. The high-efficiency and energy-saving rail transit air-conditioning heater according to claim 1, characterized in that: The heating mechanism (4) comprises two electric heating tubes (401) symmetrically arranged in the heater housing (1); a heat conducting plate (403) is fixedly installed on the outer side of the two electric heating tubes (401); a plurality of heat dissipation fins (402) are fixedly connected at equal distances on the side of the two heat conducting plates (403) close to each other; each heat dissipation fin (402) is arranged obliquely, and the upper heat dissipation fin (402) and the lower heat dissipation fin (402) are arranged alternately; one end of the two electric heating tubes (401) is provided with a tube head (404); the two tube heads (404) are connected to a connecting wire (405); one end of the two connecting wires (405) extends to the outer side of the heater housing (1).

9. The high-efficiency and energy-saving rail transit air-conditioning heater according to claim 1, characterized in that: An air inlet and an air outlet are respectively arranged on both sides of the heater housing (1), the air inlet and the air outlet respectively corresponding to the air inlet pipe (7) and the air outlet pipe (6), and an electric heating wire (5) is arranged in the air outlet.

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