A vehicle air conditioner heater for new energy vehicles

Abstract

The present invention relates to the technical field of heaters, and particularly to a heater for the warm air conditioner of a new energy vehicle, which includes an installation outer frame. The heater uses a heating element made of a super heat-conducting alloy material as the heating body, which can achieve the heating function under different powers and voltages, and has the advantages of fast heating, fast heat conduction, light weight, precise electronic control, low power consumption, purifying the air in the air duct, being safe, environmentally friendly, reliable in use and having a long service life. In the installation outer frame, the upper part of the heating element adopts a fixed fastening method, while the lower part adopts a pair of appropriate action and reaction forces formed by the compression tension of the elastic element and the tensile force of the heating belt to make the heating element properly tensioned. The heater adopts ventilation panels with regular hexagonal mesh holes on the air inlet side and the air outlet side. When the wind speed on the air inlet side enters the heater cavity, the cross-section and space in the cavity are larger than those at the ventilation panel, resulting in sudden changes in wind speed and wind direction, which promotes noise reduction and the heating efficiency of the air.

Description

Technical Field

[0001] The present invention relates to the technical field of heaters, and more specifically, to a vehicle air conditioner warm air heater for new energy vehicles. Background Art

[0002] Most of the heating elements used in the existing air conditioner warm air heaters for new energy vehicles are PTC ceramic elements. They have a high self-resistance, consume a lot of electric energy during the electro-thermal conversion process. Moreover, the heat energy generated by them needs to rely on aluminum fin radiators, and the aluminum fin radiators themselves consume heat energy during temperature rise. The specific heat capacity (C) of aluminum is 0.88 J / (g·k). Therefore, during the heat transfer process, there is a large heat energy loss.

[0003] Moreover, the PTC heating elements with aluminum fin radiators have relatively high requirements for the use environment and air cleanliness. The aluminum fins are densely arranged. After a long time of use, there will be dust and dirt accumulation between the aluminum fins. Once heated, it will emit odors and spread into the vehicle through the air duct, affecting the health of the passengers and drivers.

[0004] After power-off, this combination cannot quickly transfer the heat energy to the air or the object to be heated immediately. The delay time will lead to a reduction in the full utilization of heat energy and cause heat energy loss. In addition, due to the dense arrangement of aluminum fins on the body of this combination, the ventilation area is small, and a higher wind speed is required to obtain a better heating air volume and wind speed. Therefore, the power consumption of the fan will be large.

[0005] In terms of structure, due to the dense aluminum fins, the self-weight of this combination is relatively large. In terms of electronic control, because multiple groups of PTC ceramic heating elements can only be connected in parallel, multiple IGBTs are used for switching control in its electronic control, and the electronic control is relatively complex. Summary of the Invention

[0006] In order to solve the technical defects mentioned in the above background art, the purpose of the present invention is to provide a vehicle air conditioner warm air heater for new energy vehicles, which has a simple structure, can heat and transfer heat immediately, and has very small self-power consumption and heat energy.

[0007] To achieve the above purpose, the present invention provides the following technical solutions:

[0008] A vehicle air conditioner warm air heater for new energy vehicles includes an installation outer frame body. Ventilation panels are provided on the opposite two side surfaces of the installation outer frame body. A heating element is arranged inside the installation outer frame body. The heating element includes an upper fixing frame located at the top end inside the installation outer frame body, a lower fixing frame located at the bottom end inside the installation outer frame body, and a heating element located between the upper fixing frame and the lower fixing frame. A plurality of fixing members are respectively arranged at intervals on the upper fixing frame and the lower fixing frame, and the heating element is successively wound around the corresponding fixing members of the upper fixing frame and the lower fixing frame.

[0009] By adopting the above technical solutions, the heating function of the heater under different powers and voltages is realized, and the heater has the advantages of fast heating, fast heat conduction, light weight, simple structure, accurate electronic control, low power consumption, air purification in the air duct, safety, environmental protection, reliable use and long service life.

[0010] Preferably, the upper fixing frame is fixedly connected to the installation outer frame body, and there are gaps between the two end faces of the installation outer frame body and the corresponding inner side walls of the installation outer frame body respectively, and these gaps form an electrically connected area for the heating element to pass through.

[0011] By adopting the above technical solutions, the installation and power-on of the heating element on the heater are realized.

[0012] Preferably, the fixing member is arranged in an L-shaped structure, and the fixing member includes a fixing part and an anti-detachment part, and the fixing part and the anti-detachment part are perpendicular to each other;

[0013] The fixing members on the upper fixing frame are located at the bottom of the upper fixing frame, the fixing members on the lower fixing frame are located at the top of the lower fixing frame, and the fixing members on the upper fixing frame and the fixing members on the lower fixing frame are in one-to-one correspondence and are arranged staggered with each other.

[0014] By adopting the above technical solutions, the heating element is installed and arranged in a winding manner in the installation outer frame body.

[0015] Preferably, the fixing members are evenly distributed on one side of the upper fixing frame and one side of the lower fixing frame; or, the fixing members are evenly distributed on the opposite sides of the upper fixing frame and the opposite sides of the lower fixing frame.

[0016] By adopting the above technical solutions, one set or multiple sets of heating elements are arranged on the heater, which can enable the heater to transfer heat quickly and improve the use effect.

[0017] Preferably, at least one end of the lower fixing frame is provided with a suspension device, and the suspension device includes an installation part and a buffer component. The installation part is located at the end of the lower fixing frame. The buffer component includes a fixing rod penetrating through the installation part, an elastic member sleeved on the fixing rod. The installation part is slidably connected to the fixing rod, and a limiting member is also arranged on the fixing rod, and the elastic member abuts between the installation part and the limiting member.

[0018] By adopting the above technical solutions, it is realized that the lower fixing frame can form a suitable pair of action and reaction forces with the pulling force of the heating element in the installation outer frame body, so that the heating element is properly tensioned, ensuring the safety and stability of the structure during use.

[0019] Preferably, a groove is provided at the bottom of the inner wall of the installation outer frame, a convex portion corresponding to the groove is provided at the bottom of the lower fixing frame, guiding members are respectively provided at two opposite side edges of the groove, a clamping area is formed between two guiding members at opposite positions, the convex portion is in clamping cooperation with the clamping area, and the convex portion is slidably connected to the guiding members.

[0020] By adopting the above technical solution, the shaking and falling off of the lower fixing frame during sliding are avoided. Further, a pair of appropriate action and reaction forces are formed between the lower fixing frame and the heating element in the installation outer frame, so that the heating element is properly tensioned.

[0021] Preferably, at least one side surface of the installation outer frame is provided with an installation opening for installing a ventilation panel, a plurality of fasteners for installing the ventilation panel are provided on the installation opening, a limiting plate is provided at the installation opening, the limiting plate is fixedly connected to the fasteners, and the limiting plate is flush with the side of the fasteners facing the ventilation panel. The limiting plate and the fasteners are respectively in mutual contact with the ventilation panel. The ventilation panel is provided with mesh holes, and the air passing areas of the opposite two side walls of the installation outer frame are the same.

[0022] By adopting the above technical solution, the installation and fixation of the ventilation panel are realized, the heating effect of the heater can be effectively guaranteed, and the air volume and air speed of the air outlet side and the air inlet side of the installation outer frame can be balanced, so that the heater has less noise during use.

[0023] Preferably, at least two insulating pressing plates are provided on the outer wall of the installation outer frame, limiting holes are provided on the installation outer frame facing the insulating pressing plates, both ends of the heating element respectively pass through the installation outer frame through the limiting holes and are connected between the two insulating pressing plates. A positive and negative electrode wire is provided on one of the insulating pressing plates, and the heating element is electrically connected to the positive and negative electrode wire;

[0024] The two insulating pressing plates are distributed on the same side of the outer wall of the installation outer frame; or, the two insulating pressing plates are distributed on different sides of the outer wall of the installation outer frame.

[0025] By adopting the above technical solution, the energization and heating of the heating element are realized, its electronic control is simpler and more accurate, and it has the characteristics of reliable use, few faults and long service life.

[0026] Preferably, at least two temperature sensors are provided on the installation outer frame. One temperature sensor is located on one side of the inner wall of the installation outer frame, and the other installation outer frame is located on the top of the inner wall of the installation outer frame. A water level probe is also provided on the installation outer frame. The water level probe is located on one side of the inner wall of the installation outer frame, and the detection end of the water level probe faces the bottom of the inner wall of the installation outer frame.

[0027] By adopting the above technical solution, the safety of the heater is ensured. The temperature sensor controls the temperature rise of the inlet and outlet air of the heater, avoiding the problems of dry burning or overheating. The water level probe can cut off the power before the water overflows the body, further enhancing the safety of the vehicle heater.

[0028] In summary, the present invention has the following technical effects:

[0029] The heater realizes the heating function under different powers and voltages, and has the advantages of fast heating, fast heat conduction, light weight, simple structure, accurate electronic control, low power consumption, purifying the air in the air duct, safety, environmental protection, reliable use and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment of the present invention;

[0031] Figure 2 It is a schematic diagram of the internal structure of the installation outer frame of a specific embodiment of the present invention;

[0032] Figure 3 It is a schematic diagram of the structure of the installation outer frame of a specific embodiment of the present invention;

[0033] Figure 4 It is a schematic diagram of the structure of the lower fixing frame of a specific embodiment of the present invention;

[0034] Figure 5 It is a schematic diagram of the structure of the buffer assembly of a specific embodiment of the present invention;

[0035] Figure 6 It is a schematic diagram of the structure of the upper fixing frame of a specific embodiment of the present invention.

[0036] Explanation of the reference numerals in the drawings: 1. Installation outer frame; 2. Heating element; 3. Insulating pressing plate; 4. Positive and negative wires; 5. Limiting hole; 6. Upper fixing frame; 7. Lower fixing frame; 8. Installation part; 9. Buffer assembly; 10. Elastic member; 11. Fixing member; 12. Guide member; 13. Groove; 14. Protruding part; 15. Fixing rod; 16. Limiting member; 17. Ventilation panel; 18. Fastening member; 19. Limiting plate; 20. Temperature sensor; 21. Water level probe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] The following further elaborates on the embodiments of the present invention in conjunction with the attached Figure 1-6 , and makes a more detailed description of the embodiments of the present invention.

[0038] A vehicle-mounted air conditioner warm air heater for new energy vehicles, such as Figure 1 , 3As shown in the figure, it includes an installation outer frame 1. In this embodiment, the installation outer frame 1 is a rectangular frame structure, which is integrally processed from a whole aluminum alloy material. It can be machined or die-cast. It has the technical characteristics of light weight, convenient processing, high product yield, safe and reliable use, and long service life.

[0039] As Figure 2 shown, a heating element is provided on the installation outer frame 1. The heating element includes an upper fixing frame 6 located at the inner top end of the installation outer frame 1, a lower fixing frame 7 located at the inner bottom end of the installation outer frame 1, and a heating element 2 located between the upper fixing frame 6 and the lower fixing frame 7.

[0040] In this embodiment, the upper fixing frame 6 is provided with installation holes penetrating through the top and bottom of the upper fixing frame 6. By setting screws in the installation holes, the fixed connection between the upper fixing frame 6 and the installation outer frame 1 is realized. In other embodiments, the upper fixing frame 6 can also be set to be fixedly connected to the installation outer frame 1 by welding or integrally formed in various ways to realize the fixation of the upper fixing frame 6 on the installation outer frame 1.

[0041] As Figure 2 shown, there are gaps between the two end faces of the installation outer frame 1 and the corresponding inner side walls of the installation outer frame 1 respectively. These gaps form an electrically connected area for the heating element 2 to pass through. The lower fixing frame 7 is located at the bottom of the inner wall of the installation outer frame 1. A plurality of fixing members 11 are respectively arranged at intervals on the upper fixing frame 6 and the lower fixing frame 7. As Figure 4 、 6 shown, the fixing members 11 on the upper fixing frame 6 are located at the bottom of the upper fixing frame 6, and the fixing members 11 on the lower fixing frame 7 are located at the top of the lower fixing frame 7. The fixing members 11 on the upper fixing frame 6 and the fixing members 11 on the lower fixing frame 7 are in one-to-one correspondence and are arranged staggeredly with each other.

[0042] In this embodiment, the heating element 2 is successively wound around the corresponding fixing members 11 of the upper fixing frame 6 and the lower fixing frame 7. The fixing member 11 is set to be an L-shaped structure, and the fixing member 11 includes a fixing part and an anti-detachment part. The fixing part and the anti-detachment part are perpendicular to each other, which can effectively prevent the heating element 2 from loosening when wound on the fixing member 11. One more group of fixing members 11 is arranged on the lower fixing frame 7 than on the upper fixing frame 6, and the heating element 2 is set to be a strip-shaped structure. The strip-shaped heating element 2 can be horizontally wound up and down on the fixing member 11 at a certain interval distance, and the heating element 2 with a length of several meters can be miniaturized in a smaller space.

[0043] In order to achieve the energized heating of the heating element 2, at least two insulating pressure plates 3 are provided on the outer wall of the mounting outer frame 1. Limiting holes 5 are provided on the mounting outer frame 1 facing the insulating pressure plates 3. Both ends of the heating element 2 respectively pass through the limiting holes 5 to be connected between the mounting outer frame 1 and the two insulating pressure plates 3. A positive and negative wire 4 is provided on one of the insulating pressure plates 3, and the heating element 2 is electrically connected to the positive and negative wire 4. The two insulating pressure plates 3 are distributed on the same side of the outer wall of the mounting outer frame 1, or the two insulating pressure plates 3 are distributed on different sides of the outer wall of the mounting outer frame 1.

[0044] In this embodiment, two insulating pressure plates 3 are provided on one side of the outer wall of the mounting outer frame 1 facing the upper fixing frame 6. When the heating element 2 is wound around the fixing member 11, one end of it passes through the electrical connection area and the mounting outer frame 1 and is fixed to one of the insulating pressure plates 3 on the outer wall of the mounting outer frame 1. Assuming that one end of the heating element 2 is fixed on the left side of the upper fixing frame 6, on the same side where the heating element 2 is fixed, the first fixing member 11 in the left-to-right direction on the lower fixing frame 7 is the first lower fixing member 11, and the first fixing member 11 in the left-to-right direction on the upper fixing frame 6 is the first upper fixing member 11. The other end of the heating element 2 passes through the electrical connection area to the first lower fixing member 11. At this time, the upper end surface of the heating element 2 is attached to the lower end surface of the fixing part of the fixing member 11, and then it is pulled from the bottom of the first lower fixing member 11 in an S-shaped manner to the first upper fixing member 11. At this time, the lower end surface of the heating element 2 is attached to the upper end surface of the fixing part of the fixing member 11. And so on, the last fixing member 11 on the upper fixing frame 6 is then wound to the last fixing member 11 on the lower fixing frame 7, and finally the heating element 2 is continuously stretched in the direction of the upper fixing frame 6, passes through the electrical connection area and the mounting outer frame 1 on the right side of the upper fixing frame 6 and is fixed to the other insulating pressure plate 3 on the outer wall of the mounting outer frame 1. On the contrary, when one end of the heating element 2 is fixed on the right side of the upper fixing frame 6, the other end is fixed on the left side of the upper fixing frame 6. At this time, the heating element 2 is connected in series with the positive and negative wire 4.

[0045] In other embodiments, the two insulating pressure plates 3 can also be fixed on different sides of the mounting outer frame 1, or the upper fixing frame 6 or the lower fixing frame 7 can be respectively set as a segmented type, or the heating element 2 can be connected in parallel with the positive and negative wire 4 and other connection methods can be used to achieve the energization of the heating element 2.

[0046] In order to achieve the installation of the heating element on this heater, the fixing members 11 are evenly distributed on one side of the upper fixing frame 6 and one side of the lower fixing frame 7; or the fixing members 11 are evenly distributed on the opposite sides of the upper fixing frame 6 and the opposite sides of the lower fixing frame 7. In this embodiment, the fixing members 11 are evenly distributed along both sides of the upper fixing frame 6 and both sides of the lower fixing frame 7, which can enable two groups of the heating element 2 to be provided on this heater, can enable the heater to transfer heat quickly and increase the use effect. Of course, in other embodiments, the heating element 2 can also be set to one group or multiple groups as long as the heating function of this heater is satisfied.

[0047] In this embodiment, the heating element 2 is made of a super heat-conducting alloy material. It should be noted that the composition of the super heat-conducting alloy material contains approximately 80% nickel and approximately 20% chromium, plus several other trace elements. Using advanced smelting processes, it is made into cold-rolled materials. Due to its good rigidity and toughness, it can be further made into strip-shaped bodies with a thickness of 0.03 mm - 0.08 mm and a width of 3 mm - 5 mm according to requirements, and wound into a disc shape for storage and transportation.

[0048] In this embodiment, when the heating element 2 made of the super heat-conducting alloy material has a thickness of 0.05 mm and a width of 4 mm, the resistance value per meter length is 2.47 Ω. This characteristic gives it good electrical conductivity, enabling it to quickly convert electrical energy into high heat energy. According to the electro-thermal energy conversion formula W = I 2 Rt, it can be known that: under the same voltage, the lower the resistance, the greater the current, and then the greater the heat energy generated. It has a melting point temperature of 1400 °C, can bear high heat, and the low-resistance characteristic also has the safety characteristics of not being easily short-circuited and electrocuted by the human body (the resistance of the human body is about 1200 Ω) and not being easily short-circuited by other high-resistance objects.

[0049] The thermal conductivity coefficient of the super heat-conducting alloy material is 15 - 20 W / (m·K), having good heat conduction function. Moreover, the specific heat capacity (C) of this super heat-conducting alloy material is 0.46 J / (g·k), and the density is 8.4 g / cm 3 , and the mass (M) per meter length is less than 2 grams, while the surface area is relatively large, reaching 0.008 square meters. Therefore, it has the characteristics of small self-heat consumption and relatively fast heat conduction. After being powered on for 2 - 3 seconds, it can reach the required high temperature, and after being powered off for 2 - 3 seconds, it can return to normal temperature. It transfers the high heat energy generated to the surrounding air or the object to be heated. According to the heat calculation formula Q = C·M·ΔT in thermodynamics, the heat required for the temperature change of a unit mass of the object itself can be calculated.

[0050] As can be seen from the above, the super heat-conducting alloy material has good electrical conductivity, can heat and transfer heat immediately, and has very small self-power consumption and heat energy. Therefore, using it as a heating and heat-conducting element does not require the assistance of other materials, etc. And it has good rigidity and toughness by itself, and can be made into a heating element by winding to heat the surrounding air or the object to be heated, making the structure of the heating element 2 lightweight and simple. Also, because it is a strip-shaped metal body, it can be connected in series into a circuit loop. Therefore, its electronic control is simpler and more accurate, having the characteristics of reliable use, few failures, and long service life. And during the electro-thermal conduction process of the super heat-conducting alloy material, it does not consume oxygen, has no burning sensation, does not turn red when the ventilation is good, and can handle peculiar smells such as mildew in the air in the air duct, thereby effectively purifying the air.

[0051] It should be noted that after the heating element 2 is powered on, the heating element 2 automatically converts electrical energy into heat energy and conducts the heat energy at the same time. Since the material itself has a certain coefficient of thermal expansion, about 18·10 -6 / K, when the heating element 2 is heated, it will elongate in the up and down directions, and when the heating element 2 is cooled, it will shorten in the up and down directions, which will affect the operation of the heating element 2. In order to ensure that the heating element 2 operates under the most ideal tension, it can be tightened and follow up according to the thermal expansion and contraction of the heating element 2. As Figure 2 shown, the lower fixing frame 7 is movably connected to the installation outer frame body 1.

[0052] As Figure 2 、 4 shown, at least one end of the lower fixing frame 7 is provided with a suspension device. The suspension device includes an installation part 8 and a buffer assembly 9. The installation part 8 is located at the end of the lower fixing frame 7. As Figure 5 shown, the buffer assembly 9 includes a fixing rod 15 passing through the installation part 8 and an elastic member 10 sleeved on the fixing rod 15. The installation part 8 is slidably connected to the fixing rod 15. A limiting member 16 is also provided on the fixing rod 15. The elastic member 10 abuts between the installation part 8 and the limiting member 16.

[0053] In this embodiment, the elastic member 10 is a compression spring, the fixing rod 15 is a screw rod, and the limiting member 16 is a nut. The fixing rod 15 passes through the elastic member 10 and the lower fixing frame 7. The elastic member 10 is located on the upper end surface of the lower fixing frame 7. The limiting member 16 fixes the bottom of the fixing rod 15 to the inner wall bottom of the installation outer frame body 1, and at the same time prevents the elastic member 10 from loosening. Suspension devices are provided at both ends of the lower fixing frame 7. In other embodiments, a suspension device can also be provided on one side of the lower fixing frame 7, and a sliding device for the lower fixing frame 7 to slide can be provided on the other end. It can also be other various ways to realize the movement of the lower fixing frame 7 in the installation outer frame body 1 to ensure the tension of the heating element 2.

[0054] In this embodiment, the upper part of the heating element 2 adopts a fixed and non-movable type, and the lower part adopts the compression tension of the elastic member 10 and the pulling force of the heating element 2 to form a suitable pair of action and reaction forces, so that the heating element 2 is properly tensioned. When the heating element 2 expands due to heat, the elastic member 10 extends, and at this time the lower fixing frame 7 will move downward along with the extension of the elastic member 10 to ensure that the heating element 2 is tensioned. When the heating element 2 contracts due to cold, the elastic member 10 is compressed, and at this time the lower fixing frame 7 moves downward along with the contraction of the elastic member 10 to ensure that the heating element 2 is tensioned.

[0055] In order to further enable this structure to form a suitable pair of action and reaction forces with the pulling force of the heating element 2 and make the heating element 2 properly tensioned. As Figure 2 、 3As shown, there is a gap between the bottom of the lower fixing frame 7 and the mounting outer frame 1, and a groove 13 is provided on the bottom of the inner wall of the mounting outer frame 1, and a protrusion 14 corresponding to the groove 13 is provided at the bottom of the lower fixing frame 7, and guide members 12 are respectively provided on the opposite sides of the groove 13. A clamping area is formed between the two oppositely positioned guide members 12, and the protrusion 14 cooperates with the clamping area to be in a clamping state, and the protrusion 14 and the guide member 12 are slidably connected.

[0056] In this embodiment, three guide members 12 are provided on one side of the groove 13, and two guide members 12 are provided on the other side. The side walls of the guide members 12 facing the groove 13 are flush with the side walls of the groove 13. The lower fixed frame 7 will move up and down in the process of ensuring that the heating element 2 is properly tensioned. When the lower fixed frame 7 moves, it moves up and down along the guide plate toward the direction of the groove 13, which can prevent the lower fixed frame 7 from shaking when sliding, and also ensure that there is enough buffer space when the lower fixed frame 7 moves. In other embodiments, other guide members 12 can also be provided to limit the sliding of the lower fixed frame 7.

[0057] like Figure 1 As shown, a ventilation panel 17 is provided on the mounting outer frame 1, and a mounting opening for installing the ventilation panel 17 is provided on at least one side surface of the mounting outer frame 1, and a plurality of fasteners 18 for installing the ventilation panel 17 are provided on the mounting opening, and a limiting plate 19 is provided at the mounting opening, and a side of the ventilation panel 17 facing the mounting outer frame 1 is fitted with a side of the limiting plate 19 away from the mounting outer frame 1, and mesh holes are provided on the ventilation panel 17, and the wind passing areas of the two opposite side walls of the mounting outer frame 1 are consistent.

[0058] In this embodiment, the mesh holes on the ventilation panel 17 are regular hexagonal mesh holes that can prevent fingers from approaching. In other embodiments, the mesh holes can also be set to mesh holes of other shapes to ensure that the wind flow areas of the two opposite side walls of the installation outer frame 1 are consistent.

[0059] In the present embodiment, mounting openings for mounting ventilation panels 17 are provided on both opposite side surfaces of the mounting outer frame 1, and the ventilation panel 17 is detachably connected to the mounting outer frame 1. In other embodiments, one side of the mounting outer frame 1 may be configured so that the ventilation panel 17 and the mounting outer frame 1 are integrally formed, and a mounting opening for mounting the ventilation panel 17 and enabling the ventilation panel 17 to be detachably connected to the mounting outer frame 1 is provided on the other side. Of course, other ventilation panels 17 may also be fixed on the mounting outer frame 1.

[0060] In this embodiment, the fastener 18 is provided with a threaded hole. The fasteners 18 at the corners of the inner walls of two adjacent sides of the mounting outer frame 1 are right-angled sectors, and the fasteners 18 at the midpoints of the inner walls are semi-circular. The limiting plate 19 is fixedly connected to the fastener 18, and the limiting plate 19 is flush with the side of the fastener 18 facing the ventilation panel 17. Moreover, the limiting plates 19 on the two mounting openings are arranged oppositely on the left and right sides of the inner wall of the mounting outer frame 1, further ensuring the stability of the ventilation panel 17 when installed on the mounting outer frame 1 of the heater, and effectively avoiding damage caused by the detachment of the ventilation panel 17. During use, the ventilation panel 17 is located on the front and rear sides of the mounting outer frame 1, and the ventilation panel 17 is respectively in contact with the limiting plate 19 and the fastener 18. Then, by installing screws in the threaded holes, the installation and fixation of the ventilation panel 17 on the mounting outer frame 1 can be achieved. Of course, in other embodiments, other methods can also be used to install the ventilation panel 17 on both sides of the mounting outer frame 1.

[0061] It should be noted that two rows of heating elements 2 are arranged in the mounting outer frame 1. The heating elements 2 are in the shape of thin sheets with a thickness of only 0.05 mm, and the cutting edges are aligned with the direction of the blowing wind. Therefore, the space of the entire cavity and the ventilation cross-section are much larger than the ventilation panels 17 installed on both sides.

[0062] In this embodiment, the ventilation panel 17 has a certain thickness. The ventilation areas of the ventilation panels 17 on both sides of the mounting outer frame 1 are the same, and the mesh holes are polygonal. In this way, when the wind with a certain wind speed passes through the ventilation panel 17 and enters the heater cavity, the wind speed and noise will decrease. There are two rows of heating elements 2 in the heater cavity, and the distance between them is not wide. When the wind speed entering the heater cavity slows down, it is beneficial for the wind to be heated and carry away the heat energy on the heating elements 2. Moreover, the space of the heater cavity is not very large, and the hot air that quickly enters will be squeezed out by the wind that enters later. The ventilation area of the ventilation panel 17 on the air outlet side is the same as that of the ventilation panel 17 on the air inlet side. Therefore, it is easy to achieve a balance between the air volume and wind speed on the air outlet side and the air inlet side, and at the same time, no cross ventilation will be formed in the heating area and no wind noise will be generated.

[0063] It should be noted that when the wind speed of the cross ventilation increases, the wind is blown out before it is heated well, which is not conducive to the experience of rapid heating and temperature rise. When the wind speed of the cross ventilation decreases, the air volume is too small and the wind temperature is appropriate, which is also not conducive to rapid heating and temperature rise.

[0064] To improve the safety of the heater, in this embodiment, as Figure 2As shown, at least two Pt temperature sensors 20 are provided on the installation outer frame 1. One temperature sensor 20 is located on one side of the inner wall of the installation outer frame 1, and the other is located at the top of the inner wall of the installation outer frame 1. The temperature sensors 20 control the temperature rise of the incoming and outgoing air of the heater to avoid dry burning or overheating problems. A water level probe 21 is also provided on the installation outer frame 1. The water level probe 21 is located on one side of the inner wall of the installation outer frame 1, and the detection end of the water level probe 21 faces the bottom of the inner wall of the installation outer frame 1. The water level probe 21 can cut off the power before the water floods the body, further enhancing the safety of the vehicle heater.

[0065] The implementation principle of the embodiment of the present application is as follows: The heater uses a heating element 2 made of a super heat-conducting alloy material as the heating body, which is installed in the installation outer frame 1 in a winding manner. It can achieve heating functions under different powers and voltages, and has the advantages of fast heating, fast heat conduction, light weight, simple structure, low noise, accurate electronic control, low power consumption, purifying the air in the air duct, being safe, environmentally friendly, reliable in use and having a long service life. In the installation outer frame 1, the upper part of the heating element 2 is fixed firmly, while the lower part uses an elastic member 10 to compress the tension to form a suitable pair of action and reaction forces with the pulling force of the heating belt, so that the heating element 2 is properly tensioned. The heater uses ventilation panels 17 with mesh holes that can prevent fingers from approaching on the air inlet side and the air outlet side. When the wind speed on the air inlet side passes through the ventilation panel 17 and enters the heater cavity, the cross-section and space in the cavity are larger than those at the ventilation panel 17, resulting in sudden changes in wind speed and wind direction, which promotes noise reduction and the heating efficiency of the air, so that the heat of the heating element 2 can be taken away fully and effectively, while reducing the noise at the same time.

[0066] The above implementation manners are only the preferred implementation manners of the present invention, and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention belong to the scope of protection required by the present invention.

Claims

1. A vehicle air conditioner heater for new energy vehicles, including an installation outer frame (1), characterized in that, Ventilation panels (17) are provided on the opposite sides of the installation outer frame (1); a heating element is provided inside the installation outer frame (1), and the heating element includes an upper fixing frame (6) located at the top end inside the installation outer frame (1), a lower fixing frame (7) located at the bottom end inside the installation outer frame (1), and a heating element (2) located between the upper fixing frame (6) and the lower fixing frame (7). A plurality of fixing members (11) are respectively arranged at intervals on the upper fixing frame (6) and the lower fixing frame (7), and the heating element (2) is sequentially wound around the corresponding fixing members (11) of the upper fixing frame (6) and the lower fixing frame (7). The fixing member (11) is arranged in an L-shaped structure, and the fixing member (11) includes a fixing portion and an anti-detachment portion, and the fixing portion and the anti-detachment portion are perpendicular to each other. The fixing members (11) on the upper fixing frame (6) are located at the bottom of the upper fixing frame (6), and the fixing members (11) on the lower fixing frame (7) are located at the top of the lower fixing frame (7). The fixing members (11) on the upper fixing frame (6) and the fixing members (11) on the lower fixing frame (7) are in one-to-one correspondence and are arranged staggered with each other; the fixing members (11) are evenly distributed on one side of the upper fixing frame (6) and one side of the lower fixing frame (7); or, the fixing members (11) are evenly distributed on the opposite sides of the upper fixing frame (6) and the opposite sides of the lower fixing frame (7). At least one end of the lower fixing frame (7) is provided with a suspension device, and the suspension device includes an installation portion (8) and a buffer assembly (9). The installation portion (8) is located at the end of the lower fixing frame (7), and the buffer assembly (9) includes a fixing rod (15) penetrating through the installation portion (8) and an elastic member (10) sleeved on the fixing rod (15). The installation portion (8) is slidably connected to the fixing rod (15), and a limiting member (16) is further provided on the fixing rod (15), and the elastic member (10) abuts between the installation portion (8) and the limiting member (16). A groove (13) is provided on the bottom of the inner wall of the installation outer frame (1), and a convex portion (14) corresponding to the groove (13) is provided on the bottom of the lower fixing frame (7). Guide members (12) are respectively provided at the opposite sides of the groove (13), and a clamping area is formed between the two guide members (12) with opposite positions. The convex portion (14) and the clamping area are in a clamping state in cooperation, and the convex portion (14) is slidably connected to the guide member (12).

2. The vehicle air conditioner heater for new energy vehicles according to claim 1, characterized in that, The upper fixing frame (6) is fixedly connected to the installation outer frame (1), and there is a gap between the two end faces of the installation outer frame (1) and the corresponding inner side walls of the installation outer frame (1), and this gap forms an electrical connection area for the heating element (2) to pass through.

3. The vehicle air conditioner heater for new energy vehicles according to claim 1, characterized in that, On at least one side of the installation outer frame body (1), there is an installation opening for installing the ventilation panel (17). A number of fasteners (18) for installing the ventilation panel (17) are provided on the installation opening, and a limiting plate (19) is provided at the installation opening. The limiting plate (19) is fixedly connected to the fasteners (18), and the limiting plate (19) is flush with the side of the fasteners (18) facing the ventilation panel (17). The limiting plate (19) and the fasteners (18) are respectively in contact with the ventilation panel (17). The ventilation panel (17) is provided with mesh holes, and the air passing areas of the opposite side walls of the installation outer frame body (1) are the same.

4. The vehicle air conditioner heater for new energy vehicles according to claim 1, characterized in that, At least two insulating pressing plates (3) are provided on the outer wall of the installation outer frame body (1). Limiting holes (5) are provided on the installation outer frame body (1) facing the insulating pressing plates (3). Both ends of the heating element (2) pass through the installation outer frame body (1) through the limiting holes (5) and are connected between the two insulating pressing plates (3). A positive and negative wire (4) is provided on one of the insulating pressing plates (3), and the heating element (2) is electrically connected to the positive and negative wire (4); The two insulating pressing plates (3) are distributed on the same side of the outer wall of the installation outer frame body (1); or, the two insulating pressing plates (3) are distributed on different sides of the outer wall of the installation outer frame body (1).

5. The vehicle air conditioner heater for new energy vehicles according to claim 1, characterized in that, At least two temperature sensors (20) are provided on the installation outer frame body (1). One temperature sensor (20) is located on one side of the inner wall of the installation outer frame body (1), and the other installation outer frame body (1) is located at the top of the inner wall of the installation outer frame body (1). A water level probe (21) is also provided on the installation outer frame body (1). The water level probe (21) is located on one side of the inner wall of the installation outer frame body (1), and the detection end of the water level probe (21) faces the bottom of the inner wall of the installation outer frame body (1).

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