CN109443047B - Air preheater with radiating fins - Google Patents
Air preheater with radiating fins Download PDFInfo
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- CN109443047B CN109443047B CN201811088547.6A CN201811088547A CN109443047B CN 109443047 B CN109443047 B CN 109443047B CN 201811088547 A CN201811088547 A CN 201811088547A CN 109443047 B CN109443047 B CN 109443047B
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- air
- shell
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- cavity
- channel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
- F28D7/082—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
Abstract
The invention provides an air preheater with radiating fins, which comprises: the air inlet of the air channel corresponds to an air inlet of a vehicle air conditioning system, and the air outlet of the air channel corresponds to an air outlet of the vehicle air conditioning system; simultaneously, inlay in gas passage and establish the PTC device, the PTC device supplies power and work through power source, when needs heat, power source passes through connecting power pencil and circular telegram, makes the PTC device heats, and the PTC device after the heating is owing to establish in the gas passage, send into the air when the air intake gas passage back, heat through the PTC device to see off hot-blast through the gas outlet gas passage sees off gas passage's hot-blast air outlet through wheel air conditioning system sees off, can heat up in the car to heating efficiency has been improved.
Description
Technical Field
The invention relates to the technical field of air preheaters, in particular to an air preheater with radiating fins.
Background
The conventional vehicle pre-heater apparatus is installed in a heater apparatus of a vehicle, and since the amount of heat generated from the vehicle pre-heater apparatus is small, heat cannot be sufficiently transferred to a passenger through a duct, resulting in a reduction in heat dissipation efficiency, thereby extending the heating time of the vehicle pre-heater apparatus.
Disclosure of Invention
The invention provides an air preheater with radiating fins, which is used for improving the radiating efficiency of a vehicle preheater device and shortening the heating time of the vehicle preheater device.
An air preheater with cooling fins, comprising: a heat dissipation component, a PTC component and a shell,
the heat dissipation assembly is arranged in the shell and is formed by arranging a plurality of radiating fins of sheet structures at intervals one by one, the top and the bottom of the heat dissipation assembly are connected with the inner top and the inner bottom of the shell, gaps among the radiating fins are air channels,
the left side and the right side of the shell are respectively provided with a gas inlet and a gas outlet which correspond to each other, one end of the gas channel is communicated with the gas inlet, and the other end of the gas channel is communicated with the gas outlet;
the PTC subassembly is established in the gas passage, the PTC subassembly includes a plurality of PTC devices of establishing ties one by one, the top of casing is equipped with power source, power source with PTC subassembly electric connection.
In order to improve the heating efficiency, the preferable technical proposal is that the top of the heat radiation component is provided with a first groove, a first fixing plate is arranged in the first groove, the lower part of the first fixing plate is connected with the top of the PTC device at intervals,
a second groove is arranged at the bottom of the heat dissipation assembly, a second fixing plate is arranged in the second groove, the upper part of the second fixing plate is connected with the bottom of the PTC device at intervals,
wires are embedded in the first fixing plate and the second fixing plate and used for being electrically connected with the PTC device, and the two ends of each wire are electrically connected with the power supply interface.
In order to further improve the heating efficiency, as a preferred technical scheme, an S-shaped pipeline is arranged in the radiating fin, a water inlet pipe and a water outlet pipe are arranged at the top and the bottom of the radiating fin, one end of the S-shaped pipeline is communicated with the water inlet pipe, and the other end of the S-shaped pipeline is communicated with the water outlet pipe;
a plurality of raised flow guide strips are arranged on the inner wall of the S-shaped pipeline at intervals, and are spirally distributed on the inner wall of the S-shaped pipeline to form an interval spiral structure;
the shell is internally provided with a cavity, the shell is divided into an upper shell and a lower shell, the upper shell and the lower shell are both internally provided with cavities,
one end of the water inlet pipe, which is far away from the S-shaped pipeline, is communicated with the cavity in the upper shell,
and one end of the water outlet pipe, which is far away from the S-shaped pipeline, is communicated with the cavity in the lower shell.
In order to facilitate the installation of the shell, the preferable technical proposal is that the outer sides of the upper end and the lower end of the shell are respectively provided with a fixing lug which is used for fixing the shell between an air inlet and an air outlet of a vehicle air conditioning system,
and a drainage tube and a water pump are arranged on the outer side of one end, far away from the power supply interface, of the shell at intervals, the drainage tube is communicated with the cavity of the shell below, and the water pump is communicated with the cavity of the shell above.
In order to conveniently inject and discharge the liquid in the cavity, a preferable technical scheme is that a liquid electromagnetic valve is uniformly arranged between the water pump and the drainage tube and between the water pump and the cavity, the liquid electromagnetic valve is led out through a wire through a power interface, and the power interface is communicated with a controller through a power harness.
In order to ensure that the upper shell and the lower shell can be firmly assembled into a whole and avoid the situation that the radiating fins are loosened and even fall off due to the looseness of the upper shell and the lower shell, the preferable technical scheme is that four opposite corners of the upper shell are provided with bolt holes, four opposite corners of the lower shell are provided with threaded holes, the threaded holes are matched with the bolt holes and used for fastening the upper shell and the lower shell by fastening bolts, one surface of the upper shell, which is adjacent to the lower shell, is provided with a convex block, one surface of the lower shell, which is adjacent to the upper shell, is provided with a lower groove, and the lower groove and the convex block are matched with each other;
an adsorption block is arranged at the bottom of the threaded hole, a magnetic block is arranged below the fastening bolt, the adsorption block and the magnetic block are used for adsorbing the fastening bolt in the threaded hole, the magnetic block is communicated with the controller through a lead,
the outer side of the lower shell is provided with a transverse fixing bolt, the transverse fixing bolt penetrates through the inner wall of the threaded hole, and a through hole is formed in the fastening bolt and is used for the transverse fixing bolt to penetrate through.
In order to guarantee that the heat of fin is difficult for through the casing consumption, improves the fin from this and carries out radiating efficiency through gas passage, does as preferred technical scheme, the cavity is equipped with the closed valve, closed valve intercommunication has the trachea, the trachea extends to the outside of casing, just the trachea is kept away from the air pump is connected to the one end of closed valve.
In order to avoid the air leakage condition of the cavity caused by failure or untight closing of the closed valve, the preferable technical proposal is that a connecting rod channel is arranged outside the air pipe, a telescopic rod is arranged in the connecting rod channel, one end of the telescopic rod is connected with the closed valve, the other end of the telescopic rod is connected with a motor, the connecting rod channel is arranged outside the shell, the telescopic rod is arranged into a plurality of sections of connecting rod units which are sequentially sleeved, clamped and telescopic,
the connecting rod passage supplies the telescopic rod to move back and forth up and down in the passage, the connecting rod passage is also communicated with an air pipe, and one end of the air pipe, far away from the connecting rod passage, is connected with an air pump.
In order to ensure that the heat of the radiating fins is not easy to be consumed through the shell, and therefore the radiating efficiency of the radiating fins through the gas channel is improved, as an optimal technical scheme, the closed valve is arranged at the position where the cavity is communicated with the gas pipe.
The invention has the following advantages:
setting a gap between adjacent groups of radiating fins as a gas channel, wherein one end of the gas channel is set as a gas inlet, the other end of the gas channel is a gas outlet, the gas inlet corresponds to a gas inlet of a vehicle air conditioning system, and the gas outlet corresponds to a gas outlet of the vehicle air conditioning system; simultaneously, inlay in gas passage and establish the PTC device, the PTC device supplies power and work through power source, when needs heat, power source passes through connecting power pencil and circular telegram, makes the PTC device heats, and the PTC device after the heating is owing to establish in the gas passage, send into the air when the air intake gas passage back, heat through the PTC device to see off hot-blast through the gas outlet gas passage sees off gas passage's hot-blast air outlet through wheel air conditioning system sees off, can heat up in the car to heating efficiency has been improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of an air preheater with heat dissipating fins according to the present invention;
FIG. 2 is a schematic diagram of a first groove structure of an air preheater with cooling fins according to the present invention;
FIG. 3 is a schematic diagram of a cavity structure of an air preheater with heat dissipating fins according to the present invention;
FIG. 4 is a schematic view of a connection structure between an air inlet and an air outlet of an air preheater with heat dissipation fins according to the present invention;
FIG. 5 is a schematic diagram of an adsorption block of an air preheater with heat dissipation fins according to the present invention;
FIG. 6 is a schematic diagram of a rod channel structure of an air preheater with cooling fins according to the present invention;
FIG. 7 is a schematic diagram of a transverse fixing pin of an air preheater with heat dissipating fins according to the present invention;
FIG. 8 is a schematic structural view of an upper housing and a lower housing of an air preheater with cooling fins according to the present invention;
wherein, 1-an air pump, 2-an air pipe, 3-a shell, 4-a heat sink, 5-an air channel, 6-an air inlet, 7-an air outlet, 8-a PTC device, 9-a power interface, 10-a first groove, 11-a first fixing plate, 12-a second groove, 13-a second fixing plate, 14-an S-shaped pipeline, 15-an inlet pipe, 16-an outlet pipe, 17-a flow guide strip, 18-a cavity, 19-a fixing lug, 20-an air inlet, 21-an air outlet, 22-a drainage pipe, 23-a water pump, 24-a liquid electromagnetic valve, 25-an upper shell, 26-a lower shell, 27-a bolt hole, 28-a fastening bolt, 29-a threaded hole, 30-an adsorption block and 31-a magnetic block, 32-transverse fixing bolt, 33-closed valve, 34-connecting rod channel, 35-telescopic rod, 36-motor, 37-lower groove, 38-convex block and 39-controller.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
According to fig. 1 and 4, an embodiment of the present invention provides an air preheater having heat radiating fins, including: a heat dissipation assembly, a PTC assembly and a housing 3,
the heat dissipation assembly is arranged in the shell 3 and is formed by arranging a plurality of radiating fins 4 with sheet structures at intervals one by one, the top and the bottom of the heat dissipation assembly are connected with the inner top and the inner bottom of the shell 3, a gap between the radiating fins 4 is an air channel 5,
the left side and the right side of the shell 3 are respectively provided with a gas inlet 6 and a gas outlet 7 which correspond to each other, one end of the gas channel 5 is communicated with the gas inlet 6, and the other end of the gas channel is communicated with the gas outlet 7;
the PTC subassembly is established in the gas passage 5, the PTC subassembly includes a plurality of PTC devices 8 of establishing ties one by one, the top of casing 3 is equipped with power source 9, power source 9 with PTC subassembly electric connection.
Setting a gap between adjacent groups of radiating fins as a gas channel, wherein one end of the gas channel is set as a gas inlet, the other end of the gas channel is a gas outlet, the gas inlet corresponds to a gas inlet of a vehicle air conditioning system, and the gas outlet corresponds to a gas outlet of the vehicle air conditioning system; simultaneously, inlay in gas passage and establish the PTC device, the PTC device supplies power and work through power source, when needs heat, power source passes through connecting power pencil and circular telegram, makes the PTC device heats, and the PTC device after the heating is owing to establish in the gas passage, send into the air when the air intake gas passage back, heat through the PTC device to see off hot-blast through the gas outlet gas passage sees off gas passage's hot-blast air outlet through wheel air conditioning system sees off, can heat up in the car to heating efficiency has been improved.
According to fig. 2, in order to improve the heating efficiency, as a preferable technical solution, a first groove 10 is provided at the top of the heat dissipation assembly, a first fixing plate 11 is provided in the first groove 10, the top of the PTC device 8 is connected to the lower side of the first fixing plate 11 at an interval,
a second groove 12 is arranged at the bottom of the heat dissipation assembly, a second fixing plate 13 is arranged in the second groove 12, the upper part of the second fixing plate 13 is connected with the bottom of the PTC device 8 at intervals,
wires are embedded in the first fixing plate 11 and the second fixing plate 13 and used for being electrically connected with the PTC device 8, and two ends of each wire are electrically connected with the power supply interface 9.
During the use, the casing will radiator unit fixes, radiator unit's top with the interior top fixed connection of casing, the interior bottom of casing with radiator unit's interior bottom fixed connection, first recess and the second recess confession that do not set up are equallyd divide to radiator unit top and below first fixed plate with the second fixed plate is fixed, the both ends of PTC device are fixed respectively the below of first fixed plate and the top of second fixed plate, can guarantee from this the stability of PTC device reduces in the use the PTC device leads to because of vibration or striking the PTC device breaks away from gas channel to cause the condition that this gas channel heating efficiency reduces or became invalid.
According to the drawings of fig. 3 and 8, in order to further improve the heating efficiency, as a preferred technical solution, an S-shaped pipeline 14 is arranged in the heat sink 4, a water inlet pipe 15 and a water outlet pipe 16 are arranged at the top and the bottom of the heat sink 4, one end of the S-shaped pipeline 14 is communicated with the water inlet pipe 15, and the other end is communicated with the water outlet pipe 16;
a plurality of raised flow guide strips 17 are arranged on the inner wall of the S-shaped pipeline 14 at intervals, and the flow guide strips 17 are spirally distributed on the inner wall of the S-shaped pipeline 14 and form an interval spiral structure;
the shell 3 is internally provided with a cavity 18, the shell 3 is provided with an upper shell 25 and a lower shell 26, the upper shell 25 and the lower shell 26 are both internally provided with the cavity 18,
the end of the inlet pipe 15 remote from the S-shaped pipe 14 communicates with the cavity 18 in the upper housing 25,
the end of the outlet pipe 16 remote from the S-shaped pipe 14 communicates with the cavity 18 in the lower housing 26.
As shown in fig. 4, in order to facilitate the installation of the housing, it is preferable that fixing lugs 19 are disposed on the outer sides of the upper and lower ends of the housing 3, the fixing lugs 19 are used for fixing the housing 3 between an air inlet 20 and an air outlet 21 of a vehicle air conditioning system,
a drainage tube 22 and a water pump 23 are arranged at an interval on the outer side of one end of the shell 3 far away from the power interface 9, the drainage tube 22 is communicated with the cavity 18 of the lower shell 3, and the water pump 23 is communicated with the cavity 18 of the upper shell 3.
In order to facilitate the injection and discharge of the liquid in the cavity, as a preferred technical scheme, liquid electromagnetic valves 24 are respectively arranged between the water pump 23 and the drainage tube 22 and between the cavity 18, the liquid electromagnetic valves 24 are led out through a power supply interface 9 by a lead, and the power supply interface 9 is communicated with a controller by a power supply harness.
When the water storage device is used, the water pump is connected with the top of the upper shell, the water pump is communicated with the cavity of the upper shell, so that the water pump can inject water into the cavity in the upper shell, after the water is injected into the cavity in the upper shell, water flows into the S-shaped pipeline through the water inlet pipe, the S-shaped pipeline is internally provided with the guide strips with the spiral structures, the guide strips are distributed on the inner wall of the S-shaped pipeline at intervals in an S shape, so that the integral stability of the S-shaped pipeline can be ensured, meanwhile, the water can smoothly flow to an outlet from an inlet of the S-shaped pipeline, when the water flows through the S-shaped pipeline, reaches the outlet end of the S-shaped pipeline and then flows into the cavity of the lower shell through the water outlet pipe 16, the cavity of the lower shell is used for storing the water flowing out of the S-shaped pipeline, and when the water flowing out of the S-, and the guide pipe arranged below the cavity of the lower shell discharges water.
When water does not need to be injected into the cavity of the upper shell, the controller can close the liquid electromagnetic valve connected between the water pump and the cavity of the upper shell, so that the cavity water injection port of the upper shell can be closed, and when the water in the cavity of the lower shell is discharged and the drainage tube connected with the cavity of the lower shell needs to be closed, the controller can close the liquid electromagnetic valve between the cavity of the lower shell and the drainage tube connected with the cavity of the lower shell, so that the open end of the cavity of the lower shell can be closed.
The outer top of going up the casing still is equipped with the water tank, water pump one end intercommunication the water tank, the other end intercommunication S type pipeline. The inner wall of the S-shaped pipeline is further embedded with a heating wire, the heating wire is led out of the outer side of the S-shaped pipeline through a wire and is connected with a power supply through the power supply interface, when the heating is needed, the heating function can be realized by injecting water into the S-shaped pipeline and electrifying the heating wire, after the water in the S-shaped pipeline is heated through the heating wire, the heat of the water is conducted to the gas channel through the radiating fins and is conducted to the air outlet, and the purpose of rapid heating is realized. When the accelerated heating is not needed, the heating wire is not needed to be electrified and heated. When the temperature needs to be reduced, the power supply of the heating wire is disconnected, meanwhile, hot water in the S-shaped pipeline is pumped out through the water pump, and cold water in the water tank is injected into the S-shaped pipeline again, so that the purpose of rapid cooling can be achieved.
In another embodiment, the water tank in the vehicle is communicated between the water pumps, and the water tank on the vehicle can be gradually heated after the vehicle is started, so that hot water in the water tank on the vehicle can be extracted and utilized, and the purpose of heating and heat extraction by utilizing an electric heating wire can be omitted.
According to fig. 5 and 7, in order to ensure that the upper housing and the lower housing are firmly assembled together and prevent the heat sink from loosening and even falling off due to the loosening of the upper housing and the lower housing, as a preferred technical solution, bolt holes 27 are respectively formed at four opposite corners of the upper housing 25, threaded holes 29 are respectively formed at four opposite corners of the lower housing 26, the threaded holes 29 are matched with the bolt holes 27 and are used for fastening the upper housing 25 and the lower housing 26 by fastening bolts 28, a protruding block 38 is arranged at one surface of the upper housing 25 adjacent to the lower housing 26, a lower groove 37 is arranged at one surface of the lower housing 26 adjacent to the upper housing 25, and the lower groove 37 and the protruding block 38 are matched with each other;
an adsorption block 30 is arranged at the bottom of the threaded hole 29, a magnetic block 31 is arranged below the fastening bolt 28, the adsorption block 30 and the magnetic block 31 are used for adsorbing the fastening bolt 28 in the threaded hole 29, the magnetic block 31 is communicated with the controller 39 through a lead,
the outer side of the lower shell 26 is provided with a transverse fixing bolt 32, the transverse fixing bolt 32 penetrates through the inner wall of the threaded hole 29, and the fastening bolt 28 is also provided with a through hole for the transverse fixing bolt 32 to penetrate through.
When in use, the convex blocks 38 of the upper shell are embedded in the lower grooves 37, so that the contact surfaces of the upper shell and the lower shell are prevented from being displaced due to movement between the upper shell and the lower shell, and the upper shell and the lower shell can be well fixed into a whole; meanwhile, a sealing heat-insulating material is arranged between the upper shell and the lower shell and is made of rigid polyurethane foam, so that the purpose of sealing and insulating an assembly gap between the upper shell and the lower shell can be effectively guaranteed; through utilizing fastening bolt to run through the bolt hole of last casing to screw thread fixed connection is in screw hole 29, guarantees the fixed as an organic whole that upper and lower casing can be fine, simultaneously the screw hole is close to still be equipped with horizontal gim peg in the casing outside down, horizontal gim peg by the lateral wall of casing runs through extremely down in the screw hole, runs through simultaneously fastening bolt is close to the one end of screw hole bottom to extend and run through another lateral wall of screw hole, and fix through the screw thread on another lateral wall of screw hole, reduce from this fastening bolt causes because of the screw slippage go up the casing with the circumstances that the casing was thrown off down.
In another embodiment, in order to avoid the case that the upper case and the lower case are disengaged due to the slipping of the screw, an adsorption block is further arranged at one end of the fastening bolt close to the bottom of the threaded hole, a magnetic block is arranged at the bottom of the threaded hole, and after the fastening bolt enters the threaded hole, the adsorption block at the end part of the fastening bolt is adsorbed by the magnetic block at the bottom of the threaded hole, so that the situation that the screw is loosened due to vibration in the using process can be reduced, the fastening purpose of the fastening bolt and the threaded hole is further enhanced, and the fastening of the upper case and the lower case is enhanced.
According to fig. 6, in order to ensure that the heat of the heat dissipation fins is not easily consumed by the housing, thereby improving the efficiency of heat dissipation of the heat dissipation fins through the air channel, as a preferred technical solution, the cavity 18 is provided with a closed valve 33, the closed valve 33 is communicated with an air pipe 2, the air pipe 2 extends to the outer side of the housing 3, and one end of the air pipe 2, which is far away from the closed valve 33, is connected with the air pump 1. The sealing valve 33 is arranged at a position where the cavity 18 is communicated with the air pipe 2.
According to fig. 6, in order to avoid the air leakage of the cavity caused by the failure or untight closing of the sealing valve, as an optimal technical scheme, a connecting rod channel 34 is arranged outside the air tube 2, an expansion rod 35 is arranged in the connecting rod channel 34, one end of the expansion rod 35 is connected with the sealing valve 33, the other end of the expansion rod is connected with a motor 36, the connecting rod channel 34 is arranged outside the shell 3, the expansion rod 35 is arranged into a plurality of multi-section connecting rod units which are sequentially sleeved, clamped and extended,
the connecting rod passage 34 is used for the telescopic rod 35 to move up and down in the passage, the connecting rod passage 34 is also communicated with an air pipe 2, and one end, far away from the connecting rod passage 34, of the air pipe 2 is connected with the air pump 1.
When in use, the air in the cavity is pumped by the air pump to change the cavity into a vacuum state, meanwhile, the cavity is isolated from the air pipe by the sealing valve, so that the air leakage of the cavity in a vacuum state is avoided, and the cavities of the upper shell and the lower shell are set to be in a vacuum state, thereby ensuring that the heat radiating fins and the PTC devices in the shell can keep the temperature in the shell warm in the heating process, the inner wall of the cavity is also provided with a metal reflecting layer which is a silver coating, because the temperature can not conduct heat conduction and convection in vacuum, and the plated metal reflecting layer can reflect heat radiation, therefore, the heat dissipation fins and the PTC devices in the shell can reduce the temperature consumption in the shell in the heating process, and the purposes of heat preservation and consumption reduction can be achieved. The closed valve is set as an electromagnetic valve and is connected with the controller through a lead, when the air in the cavity is pumped away by the air pump, the closed valve is closed through the controller, and the purpose of closing the cavity can be achieved. When the cavity is not needed to be used for heat preservation, the purpose that the vacuum state of the cavity is switched to the non-vacuum state can be achieved by opening the closed valve and injecting the cavity into the cavity by using the air pump. Or water is injected into the cavity through a water pump, and the vacuum state of the cavity can be switched.
In order to avoid the electromagnetic failure of the closed valve, in one embodiment, a connecting rod channel is arranged between the air pipe and the cavity, the connecting rod channel is used for placing a telescopic rod, one end of the telescopic rod is connected with a motor, when the cavity needs to be set to be in a vacuum state, air is pumped by an air pump, air in the cavity is discharged out of the cavity through the connecting rod channel and the air pipe, after the air is exhausted, the motor lifts the telescopic rod upwards, and the top surface of the closed valve is attached to the open end of the cavity, so that the cavity can be closed. When the non-vacuum state needs to be switched, the motor is utilized to stretch the telescopic rod downwards, the top surface of the closed valve leaves the opening end of the cavity, the opening end of the cavity is opened, gas enters the cavity through the opening end of the cavity, the non-vacuum state switching of the cavity is completed, or water is injected into the cavity through a water pump, the non-vacuum state switching of the cavity is realized, and air or oxygen exists in water in the water injection process, so that the cavity is in the non-vacuum state.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. An air preheater with cooling fins, comprising: a heat dissipation component, a PTC component and a shell (3),
the heat dissipation assembly is arranged in the shell (3), the heat dissipation assembly is formed by arranging a plurality of radiating fins (4) with sheet structures at intervals one by one, the top and the bottom of the heat dissipation assembly are connected with the inner top and the inner bottom of the shell (3), a gap between the radiating fins (4) is an air channel (5),
the left side and the right side of the shell (3) are respectively provided with a gas inlet (6) and a gas outlet (7) which correspond to each other, one end of the gas channel (5) is communicated with the gas inlet (6), and the other end of the gas channel is communicated with the gas outlet (7);
the PTC assembly is arranged in the gas channel (5), the PTC assembly comprises a plurality of PTC devices (8) which are connected in series one by one, a power supply interface (9) is arranged at the top of the shell (3), and the power supply interface (9) is electrically connected with the PTC assembly;
an S-shaped pipeline (14) is arranged in the radiating fin (4), a water inlet pipe (15) and a water outlet pipe (16) are arranged at the top and the bottom of the radiating fin (4), one end of the S-shaped pipeline (14) is communicated with the water inlet pipe (15), and the other end of the S-shaped pipeline is communicated with the water outlet pipe (16);
a plurality of raised flow guide strips (17) are arranged on the inner wall of the S-shaped pipeline (14) at intervals, and the flow guide strips (17) are spirally distributed on the inner wall of the S-shaped pipeline (14) and form an interval spiral structure;
a cavity (18) is arranged in the shell (3), the shell (3) is divided into an upper shell (25) and a lower shell (26), the cavities (18) are arranged in the upper shell (25) and the lower shell (26),
one end of the water inlet pipe (15) far away from the S-shaped pipeline (14) is communicated with a cavity (18) in the upper shell (25),
one end of the water outlet pipe (16) far away from the S-shaped pipeline (14) is communicated with a cavity (18) in the lower shell (26);
the outer sides of the upper end and the lower end of the shell (3) are respectively provided with a fixing lug (19), the fixing lugs (19) are used for fixing the shell (3) between an air inlet (20) and an air outlet (21) of a vehicle air conditioning system,
a drainage tube (22) and a water pump (23) are arranged on the outer side of one end, far away from the power interface (9), of the shell (3) at intervals, the drainage tube (22) is communicated with a cavity (18) of a lower shell (26), and the water pump (23) is communicated with the cavity (18) of an upper shell (25);
a liquid electromagnetic valve (24) is uniformly arranged between the water pump (23) and the cavity (18) and between the drainage tube (22), the liquid electromagnetic valve (24) is led out through a wire through a power interface (9), and the power interface (9) is communicated with a controller (39) through a power harness.
2. An air preheater with heat dissipating fins according to claim 1, wherein the top of the heat dissipating assembly is provided with a first groove (10), a first fixing plate (11) is provided in the first groove (10), the top of the PTC device (8) is connected to the first fixing plate (11) at a lower interval,
a second groove (12) is formed in the bottom of the heat dissipation assembly, a second fixing plate (13) is arranged in the second groove (12), the upper portion of the second fixing plate (13) is connected with the bottom of the PTC device (8) at intervals,
all inlay in first fixed plate (11) with second fixed plate (13) and be equipped with the wire, the wire is used for electric connection PTC device (8), just the equal electric connection in both ends of wire power source (9).
3. An air preheater with heat dissipating fins according to claim 1, wherein the upper housing (25) has bolt holes (27) at four opposite corners, the lower housing (26) has threaded holes (29) at four opposite corners, the threaded holes (29) are engaged with the bolt holes (27) and allow fastening bolts (28) to fasten the upper housing (25) and the lower housing (26), the upper housing (25) has a protrusion (38) at a surface adjacent to the lower housing (26), the lower housing (26) has a lower groove (37) at a surface adjacent to the upper housing (25), and the lower groove (37) and the protrusion (38) are engaged with each other;
an adsorption block (30) is arranged at the bottom of the threaded hole (29), a magnetic block (31) is arranged below the fastening bolt (28), the adsorption block (30) and the magnetic block (31) are used for adsorbing the fastening bolt (28) in the threaded hole (29), the magnetic block (31) is communicated with the controller (39) through a lead,
the outer side of the lower shell (26) is provided with a transverse fixing bolt (32), the transverse fixing bolt (32) penetrates through the inner wall of the threaded hole (29), and a through hole is also formed in the fastening bolt (28) and is used for the transverse fixing bolt (32) to penetrate through.
4. An air preheater with heat radiating fins according to claim 1, wherein the cavities (18) of the upper and lower shells (25, 26) are provided with a sealing valve (33), the sealing valve (33) is communicated with an air pipe (2), the air pipe (2) extends to the outer side of the shell (3), and one end of the air pipe (2) far away from the sealing valve (33) is connected with an air pump (1).
5. An air preheater with heat dissipation fins as claimed in claim 4, wherein a connecting rod channel (34) is provided outside the air tube (2), a telescopic rod (35) is provided inside the connecting rod channel (34), one end of the telescopic rod (35) is connected to the sealing valve (33), the other end is connected to a motor (36), the connecting rod channel (34) is provided outside the housing (3), the telescopic rod (35) is provided as a multi-section connecting rod unit comprising a plurality of sequentially sleeved, clamped and extended arrangements,
the connecting rod channel (34) is used for the telescopic rod (35) to move up and down in the channel, the connecting rod channel (34) is further communicated with an air pipe (2), and one end, far away from the connecting rod channel (34), of the air pipe (2) is connected with the air pump (1).
6. An air preheater with finstock according to claim 4, characterised in that the shut-off valve (33) is provided at a location where the cavity (18) communicates with the air duct (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811088547.6A CN109443047B (en) | 2018-09-18 | 2018-09-18 | Air preheater with radiating fins |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811088547.6A CN109443047B (en) | 2018-09-18 | 2018-09-18 | Air preheater with radiating fins |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109443047A CN109443047A (en) | 2019-03-08 |
| CN109443047B true CN109443047B (en) | 2020-08-14 |
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ID=65530369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811088547.6A Active CN109443047B (en) | 2018-09-18 | 2018-09-18 | Air preheater with radiating fins |
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| Country | Link |
|---|---|
| CN (1) | CN109443047B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5206476A (en) * | 1991-09-30 | 1993-04-27 | General Motors Corporation | Supplementary automobile duct heater |
| CN101527978B (en) * | 2008-03-05 | 2014-02-05 | 孔喜 | Electrothermal film part and product thereof |
| CN202242879U (en) * | 2011-09-26 | 2012-05-30 | 河南龙瑞新能源汽车有限公司 | Fan heater special for electromobile |
| CN103542525B (en) * | 2012-07-13 | 2015-11-25 | 比亚迪股份有限公司 | A kind of electric heater unit and electric motor car |
| FR3006246B1 (en) * | 2013-05-30 | 2016-03-04 | Valeo Systemes Thermiques | HOMOGENEOUSING GRID OF AIR FLOW AND CORRESPONDING HEATING APPARATUS |
| CN106051888B (en) * | 2016-06-18 | 2019-07-19 | 苏州英哲铁路机车配件有限公司 | Heater |
-
2018
- 2018-09-18 CN CN201811088547.6A patent/CN109443047B/en active Active
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| Publication number | Publication date |
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| CN109443047A (en) | 2019-03-08 |
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