CN110641252B

CN110641252B - Thermoelectric generation fuel parking heater based on heat pipe

Info

Publication number: CN110641252B
Application number: CN201910943353.8A
Authority: CN
Inventors: 张锐; 刘运生; 高怀斌; 张波
Original assignee: Jiangxi Zhuo Super Technology Co ltd
Current assignee: Jiangxi Zhuo Super Technology Co ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2021-06-01
Anticipated expiration: 2039-09-30
Also published as: CN110641252A

Abstract

The utility model provides a thermoelectric generation fuel parking heater based on heat pipe, includes the shell that has the chimney, installs the control system of whole device on the shell, is provided with the combustion chamber of exhanst gas outlet in the shell, and the inside of combustion chamber sets up the combustor, and the one end of combustor is provided with combustion air static pressure chamber, installs heat transfer device on the outer wall of combustor, and the hot junction of thermoelectric generation module passes through heat transfer device and links to each other with the combustor, and the cold junction passes through heat transfer device and links to each other with the radiator. The electric quantity generated by the temperature difference power generation module supplies power to a motor, an oil pump, an ignition device and the like, the combustion-supporting fan and the air feeder are driven by the motor, air sent by the air feeder exchanges heat with the radiator to supply heat for a user, and the combustion-supporting fan provides air for fuel combustion in the combustion chamber. The device can also produce the electric quantity and be used for the power consumption device of self to use when can heating for the user again, and this area thermoelectric generation's parking heater can all reach the make full use of to the energy, extensively is used for the heating of long-distance freight train, passenger train etc..

Description

Thermoelectric generation fuel parking heater based on heat pipe

Technical Field

The invention relates to a thermoelectric generation fuel parking heater based on a heat pipe, which belongs to the technical field of thermoelectric generation, power supply and combustion heating.

Background

In most areas in northern China, heating is carried out in winter, fossil fuels such as coal and the like are generally used for burning to generate heat, and water or steam is used as a medium for heat exchange and heating or electricity is used as a heat source for heating. However, the coal combustion and the electricity are used as heat sources for heating, so that the defects are that: the coal and other fossil fuels are adopted to burn for heating, so that the environmental pollution is serious, the occupied area is large, the service life is long, the maintenance and the repair are needed, the coal cannot be fully utilized, the electricity is adopted as a heat source for heating, the use is convenient, the efficiency is low, and the cost is overhigh. The warm air machine has good quality of hot air, no open fire and good maneuverability, is suitable for heating under the camping conditions of departments such as army command organs, field hospitals, confidential communications, field repair and the like in wartime, and is suitable for heating in field work in cold seasons of departments such as petroleum, natural gas, railways, communications and the like in peacetime. However, the existing fan heater has the following disadvantages: firstly, the wind speed of cold wind sucked by the fan blade is fast, so that the flame burnt in the combustion cylinder is easy to be unstable; secondly, the gear pump is adopted to convey the fuel, the atomized particles of the fuel are large, the combustion is insufficient, and the spraying amount of the fuel cannot be adjusted.

In order to overcome the defect of insufficient combustion, the combustion effect is generally improved by an improved combustion air supply mode or a fuel atomization mode. The patent with the application number of 201120209070.X provides "a novel fuel fan heater", is equipped with the flame stabilizing fan dish between fan blade and a combustion section of thick bamboo, and in the reentrant combustion section of thick bamboo of flame stabilizing fan dish when inhaling cold wind, wind speed and wind direction are stable, the flame stabilization in the combustion section of thick bamboo. Patent 201120209823.7 proposes a "fuel fan heater", which uses an air pump to deliver fuel, so that the atomized particles of fuel are smaller and the combustion is more sufficient; the air outlet quantity of the air pump can be adjusted through the air adjusting valve, so that the suction quantity of the fuel oil is adjusted, and the purpose of adjusting the fuel injection quantity is achieved. The method has certain help for improving the combustion efficiency of the fan heater, and the effect is not ideal enough. In addition, the biggest shortcoming of fuel oil electric fan heater for camping is that external power is needed when the electric fan heater is operated, a generator with certain power needs to be equipped when the electric fan heater is used in the field, the working noise of the generator is large, and the rest of field workers at night is influenced. Meanwhile, when the generator is maintained or breaks down, the fan heater is also forced to stop and stop heating.

Disclosure of Invention

The invention aims to provide a thermoelectric generation fuel parking heater based on a heat pipe, which solves the defect of insufficient combustion of the parking heater by adopting evaporative efficient combustion, generates power by utilizing the temperature difference of heat released by combustion, is used for electric equipment of the parking heater, and solves the problem that the parking heater needs an external power supply.

In order to achieve the purpose, the invention adopts the technical scheme that:

a thermoelectric generation fuel parking heater based on a heat pipe comprises a shell with a chimney, wherein a combustion chamber is arranged in the shell, and a shell of the combustion chamber is provided with a plurality of rows of round holes; a combustor is arranged in the combustion chamber, a smoke outlet is formed in one end of the combustion chamber and connected with the chimney, a smoke channel is formed between the combustion chamber and the outer wall of the combustor, and smoke passes through the smoke channel formed by the combustion chamber and the outer wall of the combustor, then reaches the smoke outlet and is finally discharged through the chimney; the combustor is provided with a plurality of temperature difference power generation modules;

one end of the burner is provided with a combustion-supporting air static pressure cavity, the other end of the burner is provided with a plurality of smoke outlets, fuel oil passes through an oil pipe and then is sent into the evaporative burner through an oil pump, combustion-supporting air is sucked into the combustion-supporting static pressure cavity through an air inlet pipe and then is blown into the burner by a combustion-supporting fan to be mixed with the fuel oil, the combustion-supporting air is combusted in the burner, and generated smoke is discharged through a chimney.

The invention is further improved in that the temperature difference power generation module is connected with a first motor, an ignition device and an oil pump.

The invention is further improved in that the motor is connected with a blower.

The invention has the further improvement that the blower is an axial flow fan, and the ratio of the air quantity of the combustion-supporting fan to the air quantity of the blower is 1 (8-10); the combustion-supporting fan is connected with a second motor, and a storage battery and a controller are arranged outside the second motor.

The invention has the further improvement that the front end of the combustor is provided with an air guide ring with an air guide grid, and the rear end of the combustor is communicated with the combustion chamber.

The invention has the further improvement that the hot end of each thermoelectric power generation module is provided with a heat transfer device, and the cold end of each thermoelectric power generation module is provided with a radiator.

The radiator is further improved in that the radiator comprises a plurality of first heat pipes, a plurality of fins are arranged at one ends of the first heat pipes, a first copper plate is arranged at the other ends of the first heat pipes, and the first heat pipes extend into the first copper plate;

the heat transfer device comprises a second heat pipe, a copper ring and a second copper plate, wherein one end of the second heat pipe is provided with the copper ring, the other end of the second heat pipe is provided with the second copper plate, the thermoelectric generation module is arranged between the second copper plate and the first copper plate, the copper ring is sleeved on the outer wall of the combustor through a rib plate, and the copper ring is arranged in a flue gas channel formed by the combustion chamber and the combustor.

The further improvement of the invention is that the outer diameter of the copper ring is 140-160mm, the copper ring is composed of copper rods, the diameter of each copper rod is 10-20mm, the diameter of each copper rod is gradually reduced from the front end to the rear end, the ratio of the diameters of the two adjacent copper rods is 1 (0.9-0.95), and the distance between the two adjacent copper rings is 18-23 mm; the thickness of the first copper plate and the second copper plate is 6-12mm, and the length and the width are 50-70 mm; the diameters of the first heat pipe and the second heat pipe are both 4-6 mm.

The invention is further improved in that the distance between the adjacent fins on each first heat pipe is gradually increased from the air inlet end to the air outlet end, the distance ratio between the fins on the adjacent first heat pipes is (0.9-0.96):1, the thickness of each fin is 0.5-1mm, each fin is in interference fit with the first heat pipe, and the distance between the adjacent fins is 2-3 mm.

The invention is further improved in that the number of the round holes in each row on the shell of the combustion chamber is 2-3.

Compared with the prior art, the invention has the following beneficial effects: the parking heater is provided with the temperature difference power generation module, can utilize heat generated by fuel combustion to supply heat indoors and generate power at the same time, supplies power to devices such as a fan, an oil pump, a control system and an ignition system, gets rid of the current situation that the traditional parking heater is externally connected with a power supply when in work, and accordingly improves the utilization efficiency of energy; this device makes the diameter of circular copper pipe reduce gradually from the front end to the rear end, and the distance between the fin is crescent from the front end to the rear end, and the purpose is because both ends temperature is different around the combustion chamber, through the cold wind that changes both ends around the cold junction and the heat transfer area of fin to and the heat transfer area of tail gas and circular copper pipe, reach the same generated energy in both ends around reaching, the power consumption of the power consumption device of being convenient for.

Furthermore, the maximum power generation power is realized, and the temperature difference power generation module is ensured to work in the effective range. The proportion between the fuel consumption, the combustion air and the heat dissipation air, the proportion of the combustion air and the fuel consumption can ensure that the combustion is fully combusted and simultaneously a certain combustion temperature is provided, the maximization of the power generation power can be realized only under the specified heat dissipation air flow condition, if the heat dissipation air is excessive, the resistance is overlarge, the power consumption power is rapidly increased due to the increase of the resistance, if the heat dissipation air is too small, the heat dissipation is insufficient, and the generated energy is not enough to maintain the power consumption of the heat dissipation air. The generated power can be maximized only under the condition of the specified proportion, and the temperature difference power generation module is not damaged.

Drawings

Fig. 1 is a full view of the entire parking heater.

Fig. 2 is a cross-sectional view taken along line a-a of fig. 1.

Fig. 3 is a cross-sectional view taken along line B-B of fig. 1.

FIG. 4 is a schematic view of the connection relationship between the single-row heat transfer device, the heat sink, and the thermoelectric generation module.

Description of reference numerals: 1. an air inlet; 2. a blower; 3. a heat sink; 4. an air outlet; 5. a thermoelectric generation module; 6. a rib plate; 7. a combustion chamber; 8. a burner; 9. a chimney; 10. a combustion-supporting static pressure cavity; 11. an oil pump; 12. an oil pipe; 13. an air inlet pipe; 14. a combustion fan; 15. a housing; 16. a storage battery; 17, a motor; 18. a controller; 19. a first heat pipe; 20. a second heat pipe; 21. a copper ring; 22. a fin; 23. a first copper plate; 24. a second copper plate; 25. a second motor.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, 2, 3 and 4, the invention comprises a shell 15 with a chimney 9, a control system of the whole device is arranged on the shell 15, the control system is composed of a control box, an in-vehicle temperature controller, an overheating protection sensor and an air supply temperature sensor, and the in-vehicle temperature controller, the overheating protection sensor and the air supply temperature sensor are respectively connected with the control box. The control system in the invention is a control system in the prior art.

Be provided with combustion chamber 7 in the shell 15, combustion chamber 7 includes the casing, and the casing is regular hexagonal prism form, is provided with the drum in the casing, and the inner wall interval of drum and casing sets up, utilizes the better fan-shaped copper billet of heat conductivity to link to each other casing and drum. A plurality of rows of round holes are formed in the shell of the combustion chamber 7, and the number of each row of round holes is 2-3. A flue gas outlet is formed in one end of the combustion chamber 7 and connected with the chimney 9, a channel is formed between the combustion chamber 7 and the outer wall of the combustor 6, and flue gas passes through the channel formed by the combustion chamber 7 and the outer wall of the combustor 6, then reaches the flue gas outlet and is discharged through the chimney 9.

A burner 8 is arranged in the combustion chamber 7, a combustion air static pressure cavity 10 is arranged at one end of the burner 8, a plurality of smoke outlets are arranged at the other end of the burner 8, fuel oil passes through an oil pipe 12 and then is sent into the evaporative burner 8 through an oil pump 11, combustion air is sucked into the combustion air static pressure cavity 10 through an air inlet pipe and then is blown into the burner 8 by a combustion fan 14 to be mixed with the fuel oil, the combustion air is combusted in the burner 8, and generated smoke is discharged through a chimney 9.

The front end of the combustor 8 is provided with an air guide ring with an air guide grid, the rear end of the combustor is communicated with the combustion chamber 7, and the combustor 8 is provided with an igniter, a fire detection rod, a temperature sensor, a self-ignition fan and an automatic control system. Air is sucked in by the blower 2 through the air inlet 1, exchanges heat with the radiator 3 and is blown into a room through the air outlet 4 for heating; the combustor 8 is provided with a plurality of temperature difference power generation modules 5, the hot end of each temperature difference power generation module 5 is provided with a heat transfer device, and the cold end is provided with a radiator 3. The temperature difference power generation module 5 is connected with a first motor 17, an ignition device and an oil pump 11; the electric power generated by the thermoelectric generation module 5 is used by electric devices such as the first motor 17, the ignition device, the oil pump 11 and the like. The first motor 17 is connected to a blower 2, and the blower 2 is an axial flow fan. The combustion fan 14 is connected with a second motor 25, and a storage battery 16 and a controller 18 are arranged outside the second motor 25. The type of the blower 2 is an axial flow fan, and the ratio of the air volume of the blower 2 to the fuel consumption is 375m³And L, the air quantity ratio of the combustion-supporting fan 14 to the air feeder 2 is 1: 8-10, and a filter screen is arranged at an air inlet.

The combustor 8 is supplied with oil by an oil pump 11, the oil is mixed with air supplied by a combustion fan 14 for combustion to generate heat and become the hot end of the thermoelectric power generation module, the thermoelectric module, the cold end and the hot end interact to generate electric quantity, and the oil supply pump 11, the first motor 17, the second motor 25 and other electric devices are used.

Referring to fig. 2 and 3, the heat sink 3 includes a plurality of first heat pipes 19, one end of each first heat pipe 19 is provided with a plurality of rows of fins 22, the other end is provided with a first copper plate 23, and the first heat pipes 19 extend into the first copper plate 23.

The heat transfer device between the hot end of each thermoelectric generation module 5 and the combustor 8 comprises a second heat pipe 20, a copper ring 21 and a second copper plate 24, one end of the second heat pipe 20 is provided with the copper ring 21, the other end of the second heat pipe is provided with the second copper plate 24, the thermoelectric generation module 5 is arranged between the second copper plate 24 and the first copper plate 23, the copper ring 21 is sleeved on the outer wall of the combustor 8 through a rib plate 6, and the copper ring 21 is arranged in a flue gas channel formed by the combustor 7 and the combustor 8; the outer diameter of the copper ring 21 is 140-160mm, the diameter of the copper rod forming the copper ring 21 is 10-20mm, the diameter of the copper forming the copper ring 21 is gradually reduced from the front end to the rear end, the ratio of the diameters of the two adjacent copper rods is 1 (0.9-0.95), and the distance between every two adjacent copper rings 21 is 18-23 mm; the first copper plate, the second copper plate, 24, 23 and 24 are made of the same material, shape and size, the thickness is 6-12mm, and the length and width are both 50-70 mm;

the first heat pipe 19 and the second heat pipe 20 are made of the same material and have the same diameter, and the diameters of the first heat pipe 19 and the second heat pipe 20 are both 4-6 mm.

The thickness of each fin 22 is 0.5-1mm, the width is 15-20mm, the length is 100-120mm, the fit between the fins 22 and the first heat pipes 19 is interference fit, the distance between adjacent fins 22 is 2-3mm, the distance between adjacent fins 22 on each first heat pipe 19 is the same, but the distance between adjacent fins 22 on different first heat pipes 19 is different, the distance between adjacent fins 22 on each first heat pipe 19 is gradually increased from the air inlet to the air outlet, the distance ratio between two fins 22 on two adjacent first heat pipes 19 is (0.9-0.96):1, and the number of the fins 22 mounted on the first heat pipes 19 is 30-50.

As shown in fig. 3, one end of the second heat pipe 20 of the heat transfer device between the thermoelectric generation module 5 and the burner 3 of the present invention is welded with the copper ring 22, and the other end of the second heat pipe 20 is inserted into the second copper plate 24 for better heat transfer; one end of the first heat pipe 19 constituting the heat sink 3 is inserted into the first copper plate 23, and the other end is used as a part of the heat sink 3 for mounting the fin 22, constituting the heat sink 3. And the first copper plate 23 and the second copper plate 24 in each thermoelectric generation module 5 perform both a heat transfer function and a compression function, and are fastened using M1.6 screws.

According to the invention, the parking heater burner 8 and the radiator 3 are not attached together, but are transmitted to the radiator 3 through the heat transfer device and the thermoelectric generation module 5 for heat dissipation, the thermoelectric generation module 5 is clamped by the first copper plate 23 and the second copper plate 24, high-temperature flue gas generated by combustion of fuel in the combustion chamber 7 transfers heat to the hot end of the thermoelectric generation module 5 through the heat transfer device, and heat at the cold end of the thermoelectric generation module 5 is dissipated through the radiator 3.

The working process of the invention is as follows: when the parking heater works, fuel oil is sprayed into the combustor through the pressure of the oil pump, and is mixed and combusted with air blown in by the combustion fan to generate high-temperature flue gas, when the flue gas passes through a flue gas channel formed by the combustion chamber and the combustor, heat is transferred out by the circular copper pipe and the copper ring and transferred to the copper plate to form the hot end of the thermoelectric generation module, the cold end of the thermoelectric generation module transfers the heat to the radiator through the copper plate and the copper ring, and after air sucked by the air feeder is subjected to heat exchange with the radiator, the heat is taken away and is sent into a vehicle through the air supply opening to be. In the working process, the electric quantity required by the combustor, the motor, the oil pump and the whole control system is supplied with power through the temperature difference power generation module in the parking heater. The heating and power generation device can realize heating and power generation, avoids the dependence on an external power supply, and improves the utilization rate of energy.

Claims

1. A thermoelectric generation fuel oil parking heater based on a heat pipe is characterized by comprising a shell (15) with a chimney (9), wherein a combustion chamber (7) is arranged in the shell (15), and a plurality of rows of round holes are formed in a shell of the combustion chamber (7); a combustor (8) is arranged in the combustion chamber (7), a smoke outlet is formed in one end of the combustion chamber (7) and connected with a chimney (9), a smoke channel is formed between the combustion chamber (7) and the outer wall of the combustor (8), smoke passes through the smoke channel formed by the combustion chamber (7) and the outer wall of the combustor (8), then reaches the smoke outlet, and finally is discharged through the chimney (9); a plurality of temperature difference power generation modules (5) are arranged on the combustor (8);

one end of the burner (8) is provided with a combustion-supporting air static pressure cavity (10), the other end is provided with a plurality of smoke outlets, fuel oil passes through an oil pipe (12) and is sent into the evaporative burner (8) through an oil pump (11), combustion-supporting air is sucked into the combustion-supporting static pressure cavity (10) through an air inlet pipe, is blown into the burner (8) by a combustion-supporting fan (14) to be mixed with the fuel oil, is combusted in the burner (8), and generated smoke is discharged through a smoke pipe (9);

a heat transfer device is arranged at the hot end of each thermoelectric power generation module (5), and a radiator (3) is arranged at the cold end;

the radiator (3) comprises a plurality of first heat pipes (19), a plurality of fins (22) are arranged at one ends of the first heat pipes (19), a first copper plate (23) is arranged at the other end of each first heat pipe (19), and the first heat pipes (19) extend into the first copper plate (23);

the heat transfer device comprises a second heat pipe (20), a copper ring (21) and a second copper plate (24), the copper ring (21) is arranged at one end of the second heat pipe (20), the second copper plate (24) is arranged at the other end of the second heat pipe, the thermoelectric generation module (5) is arranged between the second copper plate (24) and the first copper plate (23), the copper ring (21) is sleeved on the outer wall of the combustor (8) through a rib plate (6), and the copper ring (21) is arranged in a flue gas channel formed by the combustor (7) and the combustor (8);

the outer diameter of the copper ring (21) is 140-160mm, the copper ring (21) is composed of copper rods, the diameter of each copper rod is 10-20mm, the diameter of each copper rod is gradually reduced from the front end to the rear end, and the diameter ratio of two adjacent copper rods is 1 (0.9-0.95).

2. The thermoelectric generation fuel parking heater based on the heat pipe as claimed in claim 1, characterized in that the thermoelectric generation module (5) is connected with a first motor (17), an ignition device and an oil pump (11).

3. A heat pipe based thermoelectric generation fuel oil park heater according to claim 2, characterized in that a blower (2) is connected to the first motor (17).

4. The thermoelectric generation fuel parking heater based on the heat pipe is characterized in that the blower (2) is an axial flow blower, and the ratio of the air volume of the combustion fan (14) to the air volume of the blower (2) is 1 (8-10); the combustion-supporting fan (14) is connected with a second motor (25), and a storage battery (16) and a controller (18) are arranged outside the second motor (25).

5. The thermoelectric generation fuel oil parking heater based on the heat pipe as claimed in claim 1, characterized in that the distance between two adjacent copper rings (21) is 18-23 mm; the thickness of the first copper plate (23) and the second copper plate (24) is 6-12mm, and the length and the width are 50-70 mm; the diameters of the first heat pipe (19) and the second heat pipe (20) are both 4-6 mm.

6. A heat pipe based thermoelectric generation fuel parking heater according to claim 1, wherein the distance between the adjacent fins (22) on each first heat pipe (19) is gradually increased from the air inlet end to the air outlet end, the distance ratio between the fins (22) on the adjacent first heat pipes (19) is (0.9-0.96):1, the thickness of each fin (22) is 0.5-1mm, the interference fit between each fin (22) and the first heat pipe (19) is provided, and the distance between the adjacent fins (22) is 2-3 mm.