Parking heater
By adding a second heat exchanger connected to the first heat exchanger in the parking heater, extending the heat exchange path, and utilizing a finned structure, the problem of heat waste in existing parking heaters is solved, achieving more efficient heat utilization and fuel combustion efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU BANGGOOD TECH CO LTD
- Filing Date
- 2025-09-09
- Publication Date
- 2026-07-14
AI Technical Summary
In existing parking heaters, the heat exchange chamber of the heat exchanger is only enclosed outside the combustion chamber, and the exhaust gas still has a high temperature, resulting in heat waste.
Design a parking heater by adding a second heat exchanger connected to the first heat exchanger, extending the heat exchange path between the heated air and the high-temperature flue gas, and performing multiple heat exchanges through the first and second heat exchangers to improve heat utilization.
By increasing the heat exchange path and fin structure, the air heating efficiency is improved, the exhaust gas temperature is reduced, the heat utilization rate and fuel combustion efficiency are increased, and the emission of harmful substances is reduced.
Smart Images
Figure CN224490600U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of heater technology, and in particular to a parking heater. Background Technology
[0002] Parking heaters are automotive components that enhance vehicle comfort. They are independent of the car engine and feature self-circulating fuel lines, electrical circuits, combustion heating devices, and control systems. In winter or low-temperature environments, parking heaters can preheat the engine and passenger compartment without starting the engine, effectively improving comfort and preventing cold-start wear.
[0003] In existing parking heaters, the heat exchanger cavity is only enclosed outside the combustion chamber. After the high-temperature flue gas generated by combustion in the combustion chamber comes into contact with the heat exchanger cavity for heat exchange, the flue gas is directly discharged from the exhaust port on one side of the heat exchanger cavity.
[0004] However, the exhaust gas still has a high temperature after exchanging heat with the heat exchange chamber that is only enclosed outside the combustion chamber. Directly discharging it at this point would result in a waste of heat. Summary of the Invention
[0005] Based on this, this application provides a parking heater to extend the heat exchange path between the air to be heated and the high-temperature flue gas generated by combustion, and to make full use of the combustion heat.
[0006] To achieve the above objectives, the technical solution of this application embodiment is implemented as follows:
[0007] This application provides a parking heater, including a heater housing, a heat exchanger, an air intake fan, and a burner. The heater housing forms a heating cavity, and the heat exchanger, air intake fan, and burner are disposed within the heating cavity. An air inlet for supplying heated air and an air outlet for supplying heated air are respectively opened on two opposite sides of the heating cavity. The heat exchanger includes a first heat exchanger and a second heat exchanger. The first heat exchanger forms a first heat exchange chamber, which houses the burner. The second heat exchanger forms a second heat exchange chamber communicating with the first heat exchange chamber. The second heat exchange chamber is disposed between the first heat exchange chamber and an exhaust port for discharging flue gas generated by the burner, so that air entering from the air inlet exchanges heat with the first heat exchanger and the second heat exchanger respectively.
[0008] In one embodiment, the second heat exchange chamber and the first heat exchange chamber are sequentially arranged on the air circulation channel from the air inlet to the air outlet.
[0009] In one embodiment, the first heat exchanger and the second heat exchanger are detachably and sealed together by fasteners to form a first heat exchange chamber and a second heat exchange chamber that are in communication with each other.
[0010] In one embodiment, the second heat exchanger is provided with an air inlet, an air inlet channel, an exhaust port, and an exhaust channel; the air inlet is connected to the burner from the outside to provide the burner with the air required for combustion; the air inlet channel connects the air inlet and the burner and passes by the second heat exchange chamber; the second heat exchange chamber is connected to the exhaust port via the exhaust channel.
[0011] In one embodiment, the exhaust port is located closer to the air inlet than the air inlet.
[0012] In one embodiment, the air intake fan includes a fan wheel and a motor. The fan wheel is disposed at the air inlet and connected to the power output shaft of the motor. The second heat exchanger is disposed around the motor.
[0013] In one embodiment, a controller is also included, which is disposed together with the second heat exchanger around the motor.
[0014] In one embodiment, the burner has a combustion chamber and a fuel line for supplying fuel to the combustion chamber, the fuel line being wound around the outer wall of the combustion chamber or the inner wall of the first heat exchanger.
[0015] In one embodiment, the outer wall of the first heat exchanger is provided with a plurality of first outer fins, and the outer wall of the second heat exchanger is provided with a plurality of second outer fins;
[0016] And / or, the inner wall of the first heat exchanger is provided with a plurality of first inner fins, and the inner wall of the second heat exchanger is provided with a plurality of second inner fins;
[0017] The first outer fin and the second outer fin are elongated, and the length direction of each of the first outer fin and the second outer fin is arranged along the flow direction of the air to be heated; the first outer fin and the second outer fin are aligned one by one along the flow direction of the air to be heated.
[0018] In one embodiment, a bracket is also included, which is detachably fixed to the heater housing.
[0019] This application has at least the following beneficial effects: In the parking heater of this application, the first heat exchange chamber of the first heat exchanger is enclosed outside the combustion chamber, and the second heat exchange chamber of the second heat exchanger is connected to the first heat exchange chamber, and the second heat exchange chamber is enclosed outside the motor of the air intake fan. Thus, the high-temperature flue gas after combustion in the burner first exchanges heat in the first heat exchanger, then flows through the connected second heat exchanger, exchanges heat again, and is then discharged outdoors. By increasing the heat exchange area of the second heat exchanger based on the first heat exchanger, efficiency can be greatly improved and exhaust gas temperature reduced. This increases the effective heat exchange path of the air to be heated from the air inlet to the air outlet, improving the heat utilization rate of the flue gas within the heat exchange chamber. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of a parking heater according to an embodiment of this application.
[0021] Figure 2 for Figure 1 A schematic diagram of the exploded structure of the parking heater.
[0022] Figure 3 for Figure 2 A schematic diagram of the assembled heat exchanger and burner.
[0023] Figure 4 for Figure 3 A schematic diagram of the exploded structure from another angle.
[0024] Figure 5 for Figure 2 An enlarged schematic diagram of the burner in the image.
[0025] Figure 6 for Figure 1 A schematic diagram of the axial cross-sectional structure of the parking heater.
[0026] The meanings of the labels in the attached diagram are as follows:
[0027] Parking heater 100;
[0028] Heater housing 10 (including air inlet 11, air outlet 12, heating chamber 13; main shell 14, cover 15);
[0029] Heat exchanger 20 (including first heat exchanger 21, first heat exchange chamber 211, first outer fin 212, first inner fin 213; second heat exchanger 22, second heat exchange chamber 221; second outer fin 222; fastener 23; air inlet 24, air outlet 25; air inlet channel 26, air outlet channel 27).
[0030] Air intake fan 30 (of which, impeller 31 and motor 31);
[0031] Burner 40 (including combustion chamber 41 and fuel line 42);
[0032] Controller 50;
[0033] Bracket 60; Detailed Implementation
[0034] The technical solution of this application will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to limit the ways in which this application may be implemented. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.
[0036] In the description of this application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, unless otherwise stated, "a plurality of" means two or more.
[0037] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0038] Please see Figure 1 and Figure 2 A parking heater 100 according to one embodiment of this application includes a heater housing 10, a heat exchanger 20, an air intake fan 30, a burner 40, and a controller 50. The heat exchanger 20, the air intake fan 30, the burner 40, and the controller 50 are disposed in a heating cavity 13 inside the heater housing 10.
[0039] The heater housing 10 is the external enclosure of the entire parking heater 100, and can be made of metal or injection molded; in the illustrated embodiment, it is injection molded. The heater housing 10 can be assembled from several parts, and the specific number of parts and the specific shape of each part are not limited here. The heater housing 10 has an air inlet 11 and an air outlet 12. Specifically, the air inlet 11 for the air to be heated and the air outlet 12 for the heated air to flow out are respectively opened on two opposite sides of the heating chamber 13. The air to be heated enters the heating chamber 13 through the air inlet 11, passes through the internal heat exchanger 20 and the high-temperature flue gas generated by combustion in the burner 40, and the heated air is discharged outward from the air outlet 12.
[0040] In the illustrated embodiment, such as Figure 2 As shown, the heater housing 10 includes a main housing 14 and a cover 15. The cover 15 is screwed onto an external thread provided at the air inlet 11 on the main housing 14. The cover 15 has multiple holes for air to enter, ensuring sufficient air intake.
[0041] A heat exchanger 20 is disposed within the heating chamber 13 of the heater housing 10 and is made of a highly thermally conductive material, such as aluminum. It facilitates heat exchange between the air to be heated entering the heating chamber 13 and the high-temperature flue gas generated after combustion in the burner 40. An airflow channel for supplying and requiring heated air is formed between the exterior of the heat exchanger 20 and the heating chamber 13 of the heater housing 10. Specifically, the air to be heated entering from the air inlet 11 flows along the airflow channel between the exterior of the heat exchanger 20 and the heating chamber 13 to the air outlet 12 and then flows outward from the air outlet 12.
[0042] Please refer to the following: Figure 3 and Figure 4 In the illustrated embodiment, the heat exchanger 20 includes a first heat exchanger 21 and a second heat exchanger 22. The first heat exchanger 21 and the second heat exchanger 22 are detachably and sealed together by fasteners 23 to form a complete heat exchange cavity (i.e., the first heat exchange cavity 211 and the second heat exchange cavity 221 are interconnected).
[0043] Specifically, the first heat exchanger 21 forms a first heat exchange chamber 211 inside, which houses the burner 40. The second heat exchanger 22 forms a second heat exchange chamber 221 inside, and is provided with an air inlet 24 and an exhaust port 25. The air inlet 24 is connected to the burner 40 from the outside to provide the burner 40 with the air required for combustion; the exhaust port 25 is connected to the outside to discharge the flue gas that has been combusted and heat exchanged by the burner 40. The second heat exchange chamber 221 is connected to the first heat exchange chamber 211. The air inlet passage 26 connecting the air inlet 24 and the burner 40 passes by the second heat exchange chamber 221 but is not connected to it. The second heat exchange chamber 221 is connected to the exhaust port 25 via the exhaust passage 27.
[0044] In the illustrated embodiment, the second heat exchange chamber 221 and the first heat exchange chamber 211 are sequentially arranged in the air flow channel. That is, the air to be heated entering from the air inlet 11 exchanges heat with the flue gas in the second heat exchange chamber 221 and the flue gas in the first heat exchange chamber 211 in sequence before flowing out from the air outlet 12. It can be understood that the air to be heated exchanges heat with the flue gas in the first heat exchange chamber 211 and the second heat exchange chamber 221 through the first heat exchanger 21 and the second heat exchanger 22. That is, the air to be heated absorbs the heat from the high-temperature flue gas in the first heat exchange chamber 211 and the second heat exchange chamber 221 to heat the air to be heated. The air to be heated does not directly contact the high-temperature flue gas.
[0045] In the illustrated embodiment, the exhaust port 25 is closer to the air inlet 11 than the air inlet 24, and the air inlet 24 is farther away from the air inlet 11 than the exhaust port 25.
[0046] To enhance heat exchange efficiency, the outer wall of the first heat exchanger 21 (facing the inner wall of the heater housing 10, located in the air flow channel) is provided with first outer fins 212, and the inner wall of the first heat exchanger 21 (facing the first heat exchange chamber 211) is provided with first inner fins 213. The first outer fins 212 are elongated, and the length direction of each first outer fin 212 is aligned with the flow direction of the air to be heated, i.e., from the air inlet 11 to the air outlet 12. Similarly, the first inner fins 213 are elongated, and the length direction of each first inner fin 213 is aligned with the flow direction of the high-temperature flue gas, i.e., from inside the first heat exchange chamber 212 to the flue gas outlet (i.e., the exhaust port 25).
[0047] Similarly, the outer wall of the second heat exchanger 22 (the inner wall facing the heater housing 10, located in the air flow channel) is provided with second outer fins 222. The second outer fins 222 are elongated, and the length direction of each second outer fin 222 is arranged along the flow direction of the air to be heated, that is, along the direction from the air inlet 11 to the air outlet 12. In other embodiments, the inner wall of the second heat exchanger 22 (facing the second heat exchange chamber 221) may also be provided with second inner fins. The second inner fins are elongated, and the length direction of each second inner fin is arranged along the flow direction of the high-temperature flue gas, that is, along the direction from the inside of the second heat exchange chamber 212 to the flue gas outlet (i.e., the exhaust port 25).
[0048] In the illustrated embodiment, the first outer fin 212 and the second outer fin 213 are aligned one-to-one along the flow direction of the air to be heated.
[0049] The arrangement of the first outer fin 212, the first inner fin 213, the second outer fin 222, and the second inner fin increases the contact area between the gas (air that needs to be heated and high-temperature flue gas generated by combustion) and the first heat exchanger 21 and the second heat exchanger 22, thereby enhancing the heat exchange effect.
[0050] To increase and enhance the amount of air entering the heater housing 10, an intake fan 30 is provided inside the heater housing 10 near the air inlet 11. When the intake fan 30 operates, it increases the amount of air entering and enhances the airflow velocity. The intake fan 30 includes a fan wheel 31 and a motor 32. The fan wheel 31 is located at the air inlet 11 and connected to the power output shaft of the motor 32. More specifically, the fan wheel 31 is mounted on the power output shaft of the motor 32. After the motor 32 starts, the power output shaft of the motor 32 drives the fan wheel 32 to rotate, thereby accelerating the delivery of the air to be heated into the heater housing 10.
[0051] In the illustrated embodiment, the impeller 31 and the motor 32 are arranged axially, and the second heat exchanger 22 is disposed around the motor 32. That is, the second heat exchanger 22 is compactly arranged using the free space around the motor 32 to increase the utilization of heat from the high-temperature flue gas generated by combustion.
[0052] Please combine Figure 5 The burner 40 is an oil burner with a combustion chamber 41. Fuel is supplied to the burner 40 from the outside through the fuel pipe 42, and the air required for combustion is supplied to the burner 40 from the outside through the air inlet 24. The fuel burns in the combustion chamber 41 and produces high-temperature flue gas, which enters the first heat exchange chamber 211 that is enclosed by the combustion chamber 41.
[0053] In other embodiments, the fuel pipe 42 for supplying fuel is wound around the outer wall of the combustion chamber 41 or the inner wall of the first heat exchanger 21. Taking the fuel pipe 42 wound around the outer wall of the combustion chamber 41 as an example, the combustion chamber 41 generates high temperatures on its surface during combustion. The fuel pipe 42 wound around the outside of the combustion chamber 41 absorbs some heat through heat transfer, heating the fuel and achieving the effect of preheating the fuel before combustion. This arrangement of the fuel pipe 42 facilitates more complete combustion of the fuel and reduces the emission of harmful substances such as carbon monoxide.
[0054] The controller 50 is used to perform overall control of the parking heater 100, such as controlling the air intake fan 30, burner 40, etc., to control the parking heater 100 to work in coordination. In the illustrated embodiment, the controller 50 is located outside the motor 32, at the notch of the second heat exchanger 22, and is arranged together with the second heat exchanger 22 on the periphery of the motor.
[0055] To facilitate the fixing of the parking heater, the parking heater 100 also includes a bracket 60, which is detachably fixed to the heater housing 10 for installing the parking heater 100 into place.
[0056] Please refer to the following: Figure 6 , it is Figure 1 The axial sectional view of the parking heater 100 shown is illustrated below. Figure 6 Referring to the arrows in the diagram, the working process of the parking heater 100 will be described in detail.
[0057] When the parking heater 100 needs to operate, the air intake fan 30 and burner 40 are started via the controller 50. After the air intake fan 30 starts, the impeller 31 rotates, drawing the external air to be heated into the heating chamber 13 through the air inlet 11. The air entering the heating chamber 13 flows along the air circulation channel outside the heat exchanger 20.
[0058] From the perspective of the gas flow path generated by combustion: After the burner 40 is started, fuel is transported to the combustion chamber 41 along the fuel pipe 42. The air required for combustion enters the combustion chamber 41 from the air inlet 24 through the second heat exchanger 22, thus combustion occurs in the combustion chamber 41, generating high-temperature flue gas. The high-temperature flue gas in the combustion chamber 41 enters the first heat exchange chamber 211 through the opening at the top of the combustion chamber 41. At this time, the air flowing through the air circulation channel outside the first heat exchanger 21 undergoes a heat exchange with the high-temperature flue gas, heating the air in the air circulation channel. The flue gas in the first heat exchange chamber 211 continues to flow into the second heat exchange chamber 221. At this time, the air flowing through the air circulation channel outside the second heat exchanger 22 undergoes a heat exchange with the flue gas, heating the air in the air circulation channel. After the second heat exchange, the flue gas flows from the second heat exchange chamber 221 to the exhaust port 25 and is discharged outwards.
[0059] From the perspective of the airflow path: After the intake fan 30 starts, the impeller 31 rotates, drawing the external air to be heated into the heating chamber 13 through the air inlet 11. The air entering the heating chamber 13 first passes through the airflow channel outside the second heat exchanger 22. At this time, the air to be heated exchanges heat with the flue gas in the second heat exchange chamber 221 of the second heat exchanger 22, thus raising the temperature of the air. After passing through the second heat exchanger 22, the air continues to pass through the first heat exchanger 21 along the airflow channel. At this time, the air that has been heated once exchanges heat with the flue gas in the first heat exchange chamber 211 of the first heat exchanger 21, thus raising the temperature of the air a second time. After passing through the first heat exchanger 21, the air continues to flow along the airflow channel to the air outlet 12, thus the heated air is delivered outward from the air outlet 12.
[0060] In summary, the parking heater of this application extends the heat exchange chamber of the heat exchanger from outside the combustion chamber to a position near the air inlet and the air intake fan. Specifically, the first heat exchange chamber of the first heat exchanger is enclosed outside the combustion chamber, and the second heat exchange chamber of the second heat exchanger is connected to the first heat exchange chamber and is enclosed outside the motor of the air intake fan. Thus, the high-temperature flue gas after combustion first exchanges heat in the first heat exchanger, then flows through the connected second heat exchanger, exchanges heat again, and is finally discharged outdoors. By increasing the heat exchange area of the second heat exchanger based on the first heat exchanger, efficiency can be greatly improved and exhaust gas temperature reduced. This increases the effective heat exchange path of the air to be heated from the air inlet to the air outlet, improving the heat utilization rate of the flue gas within the heat exchange chamber.
[0061] On the other hand, the exhaust port and exhaust passage are located on the second heat exchanger near the intake fan, while the intake port and intake passage are located on the second heat exchanger and further away from the intake fan than the exhaust passage. The heat exchanger encloses the intake pipe and intake passage, which can preheat the air entering the combustion chamber, thereby improving combustion efficiency.
[0062] In addition, the fuel pipe surrounds the heat exchanger or combustion chamber, which can preheat the fuel entering the burner, further improve the fuel atomization effect, improve the complete combustion of fuel, effectively reduce the emission of harmful substances from fuel combustion, and improve combustion efficiency.
[0063] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.
[0064] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A parking heater, comprising a heater housing, a heat exchanger, an air intake fan, and a burner, wherein a heating cavity is formed inside the heater housing, and the heat exchanger, the air intake fan, and the burner are disposed within the heating cavity; an air inlet for supplying heated air and an air outlet for supplying heated air are respectively provided on two opposite sides of the heating cavity; characterized in that: The heat exchanger includes a first heat exchanger and a second heat exchanger; the first heat exchanger has a first heat exchange cavity inside, which houses the burner; the second heat exchanger has a second heat exchange cavity inside, which communicates with the first heat exchange cavity, and the second heat exchange cavity is disposed between the first heat exchange cavity and the exhaust port from which the flue gas generated by the combustion of the burner is discharged, so that the air entering from the air inlet exchanges heat with the first heat exchanger and the second heat exchanger respectively.
2. The parking heater according to claim 1, characterized in that, The second heat exchange chamber and the first heat exchange chamber are sequentially arranged in the air circulation channel from the air inlet to the air outlet.
3. The parking heater according to claim 1, characterized in that, The first heat exchanger and the second heat exchanger are detachably and sealed together by fasteners to form a first heat exchange chamber and a second heat exchange chamber that are in communication with each other.
4. The parking heater according to claim 1, characterized in that, The second heat exchanger is provided with an air inlet, an air inlet channel, an exhaust port, and an exhaust channel; the air inlet is connected to the burner from the outside to provide the burner with the air required for combustion; the air inlet channel connects the air inlet and the burner and passes by the second heat exchange chamber; the second heat exchange chamber is connected to the exhaust port via the exhaust channel.
5. The parking heater according to claim 4, characterized in that, The exhaust port is located closer to the air inlet than the air inlet.
6. The parking heater according to claim 4, characterized in that, The air intake fan includes a fan wheel and a motor. The fan wheel is located at the air inlet and connected to the power output shaft of the motor. The second heat exchanger is located around the motor.
7. The parking heater according to claim 6, characterized in that, It also includes a controller, which is disposed together with the second heat exchanger around the motor.
8. The parking heater according to claim 1, characterized in that, The burner has a combustion chamber and a fuel pipe for supplying fuel to the combustion chamber, the fuel pipe being wound around the outer wall of the combustion chamber or the inner wall of the first heat exchanger.
9. The parking heater according to claim 1, characterized in that, The outer wall of the first heat exchanger is provided with a plurality of first outer fins, and the outer wall of the second heat exchanger is provided with a plurality of second outer fins; And / or, the inner wall of the first heat exchanger is provided with a plurality of first inner fins, and the inner wall of the second heat exchanger is provided with a plurality of second inner fins; The first outer fin and the second outer fin are elongated, and the length direction of each of the first outer fin and the second outer fin is arranged along the flow direction of the air to be heated; the first outer fin and the second outer fin are aligned one by one along the flow direction of the air to be heated.
10. The parking heater according to claim 1, characterized in that, It also includes a bracket that is detachably fixed to the heater housing.