Energy-saving automobile air-conditioning heater

Abstract

The invention discloses an energy-saving automobile air-conditioning heater, comprising a first insulating outer frame, an air guide cover, a second insulating outer frame, an aluminum frame and a PTC heating component, wherein the PTC heating component is fixedly installed in the aluminum frame, the first insulating outer frame is connected to the second insulating outer frame, and the inner walls of the first insulating outer frame and the second insulating outer frame are covered on the outer side of the aluminum frame, the air guide cover is fixed to the inner side of the first insulating outer frame, a gap is provided between the surrounding of the air guide cover and the inner side wall of the first insulating outer frame to form an air inlet, a gap is provided between the opposite surface of the air guide cover and the PTC heating component to form an air inlet channel, a notch groove is provided on one side of the aluminum frame facing the air guide cover, and the notch groove surrounds the aluminum frame, and the notch groove is connected to the air inlet, so that the airflow can sequentially pass through the air inlet and the notch groove and then enter the air inlet channel. The energy-saving automobile air-conditioning heater can prevent the insulating outer frame from being overheated and deformed, and at the same time, can improve the heating efficiency of the heater and improve the service life.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy automobile air conditioning, and in particular to an energy-saving automobile air conditioning heater. Background Art

[0002] When the car is just started or for a period of time after it is started, the heat delivered by the engine coolant cannot quickly heat the car cabin, nor can it meet the vehicle defrosting and defogging requirements. To solve such problems and improve the comfort of the car, people install an additional device, namely an electric heater, in the car air conditioner.

[0003] The electric heater in the prior art uses a plastic shell consisting of two half shells as the frame of the PTC heating element. The assembly of the heating component, heat dissipation fins, etc. of the electric heater is generally made of silicone bonding. When this electric heater is working, the excessive heat of the heating element will cause the plastic frame to soften and deform. Over time, the frame is severely deformed and it is difficult to provide stable support for the heating element, thus affecting the normal use of the electric heater. Summary of the invention

[0004] In order to solve the technical problems existing in the background technology, the present invention provides an energy-saving automobile air-conditioning heater.

[0005] The present invention provides an energy-saving automobile air-conditioning heater, comprising a first insulating outer frame, an air guide cover, a second insulating outer frame, an aluminum frame and a PTC heating component;

[0006] The PTC heating component is fixedly installed in the aluminum frame, the first insulating outer frame is connected to the second insulating outer frame, and the inner walls of the first insulating outer frame and the second insulating outer frame are covered on the outer side of the aluminum frame;

[0007] The air guide cover is fixed on the inner side of the first insulating outer frame, and a gap is provided around the air guide cover and the inner wall of the first insulating outer frame to form an air inlet, and a gap is provided between the opposite surface of the air guide cover and the PTC heating component to form an air inlet channel; a notch groove is provided on the side of the aluminum frame facing the air guide cover, and the notch groove surrounds the aluminum frame, and the notch groove is connected with the air inlet, so that the airflow can pass through the air inlet and the notch groove in sequence and then enter the air inlet channel.

[0008] Preferably, the edge of the air guide cover extends into the notch groove of the aluminum frame to form a circuitous airflow channel in the notch groove.

[0009] Preferably, a smoothly transitioned conical air guiding surface is provided on the outer side of the air guiding cover.

[0010] Preferably, a side of the air guide cover opposite to the PTC heating component is provided with an arc-shaped concave surface, and the arc-shaped concave surface surrounds the center of the air guide cover.

[0011] Preferably, a connecting rib is provided between the peripheral side of the air guide cover and the inner side wall of the first insulating outer frame.

[0012] Preferably, the PTC heating assembly comprises an aluminum shell plate and a PTC ceramic heating element encapsulated in the aluminum shell plate, and the outer wall of the aluminum shell plate is provided with heat dissipation fins.

[0013] In the present invention, the energy-saving automobile air-conditioning heater is designed with an air inlet between the air guide cover and the first insulating outer frame, so that the cold air flow can first enter the notch groove of the aluminum frame for preheating, and then enter the PTC heating component through the air inlet channel between the air guide cover and the PTC heating component for heating. In this process, the air flow can dissipate heat from the aluminum frame, thereby preventing the insulating outer frame from overheating and deforming. At the same time, the air guide cover can increase the air flow heating time, improve the heating efficiency of the heater, reduce the impact on the PTC heating component, and increase the service life of the heater. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of an energy-saving automobile air-conditioning heater proposed in an embodiment. DETAILED DESCRIPTION

[0015] Please refer to Figure 1 As shown, an energy-saving automobile air-conditioning heater according to an embodiment of the present invention comprises a first insulating outer frame 1, an air guide cover 2, a second insulating outer frame 3, an aluminum frame 4 and a PTC heating component 5. The PTC heating component 5 comprises an aluminum shell plate and a PTC ceramic heating element encapsulated in the aluminum shell plate, and the outer wall of the aluminum shell plate is provided with heat dissipation fins. The PTC heating component 5 is processed by a press-fitting process. The PTC heating component 5 is fixedly installed in the aluminum frame 4, and the aluminum frame 4 can increase the strength of the PTC heating component 5.

[0016] The first insulating outer frame 1 and the second insulating outer frame 3 of the automobile air conditioning heater are connected together by bolts, and the inner walls of the first insulating outer frame 1 and the second insulating outer frame 3 are covered on the outer side of the aluminum frame 4.

[0017] An air guide cover 2 is fixed to the inner side of the first insulating outer frame 1, and a gap is provided around the air guide cover 2 and the inner wall of the first insulating outer frame 1 to form an air inlet 11. In this embodiment, a connecting rib 24 is provided between the surrounding side of the air guide cover 2 and the inner wall of the first insulating outer frame 1, and the first insulating outer frame 1, the air guide cover 2 and the connecting rib 24 are integrally formed.

[0018] A gap is provided between the opposite surfaces of the air guide cover 2 and the PTC heating assembly 5 to form an air inlet channel 21. A notch groove 41 is provided on the side of the aluminum frame 4 facing the air guide cover 2, and the notch groove 41 surrounds the aluminum frame 4. The notch groove 41 is connected to the air inlet 11, so that the air flow can pass through the air inlet 11 and the notch groove 41 in sequence and then enter the air inlet channel 21.

[0019] According to the automobile air conditioning heater of this embodiment, when installed on the automobile, the first insulating outer frame 1 faces the cold air flow inlet end of the automobile air conditioning system, and the second insulating outer frame 3 faces the hot air delivery end of the automobile air conditioning system. The cold air flow must first enter the notch groove 41 of the aluminum frame 4 through the air inlet 11, then enter the air inlet channel 21 and pass through the PTC heating component 5 for heating.

[0020] Therefore, during the operation of the automobile air conditioning heater, the cold airflow will first enter the notch groove 41 of the aluminum frame 4 to dissipate heat to the aluminum frame 4, and at the same time, the airflow will be preheated. Due to the heat dissipation effect of the cold airflow, the temperature of the aluminum frame 4 is always lower than that of the PTC heating component 5, thereby preventing the PTC heating component 5 from overheating and causing deformation of the first insulating outer frame 1 and the second insulating outer frame 3. On the other hand, the air guide cover 2 can increase the heating time of the airflow, improve the heating efficiency of the heater, and reduce the impact of the airflow on the PTC heating component 5, thereby increasing the service life of the heater.

[0021] In a further embodiment, the edge of the air guide cover 2 extends into the notch groove 41 of the aluminum frame 4 to form a circuitous airflow channel in the notch groove 41. The circuitous airflow channel can prevent the airflow from swirling in the notch groove 41 without entering the air inlet channel 21, thereby ensuring the heat dissipation effect of the cold airflow on the aluminum frame 4.

[0022] In a further embodiment, a smoothly transitioned conical air guide surface 22 is provided on the outside of the air guide cover 2. The conical air guide surface 22 can guide the airflow into the air inlet 11, increase the airflow velocity, and reduce the impact of the airflow on the air guide cover 2, thereby improving the air intake efficiency of the air inlet 11.

[0023] In a further embodiment, an arcuate concave surface 23 is provided on a side of the air guide cover 2 opposite to the PTC heating component 5, and the arcuate concave surface 23 surrounds the center of the air guide cover 2. The arcuate concave surface 23 can guide the airflow to swirl back to the front of the PTC heating component 5, so that the airflow can pass through the PTC heating component 5 more smoothly from the front, reduce wind resistance, and ensure the heat exchange effect of the automobile air-conditioning heater.

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An energy-saving automobile air-conditioning heater, characterized in that: It comprises a first insulating outer frame (1), an air guide cover (2), a second insulating outer frame (3), an aluminum frame (4) and a PTC heating component (5); The PTC heating component (5) is fixedly installed in the aluminum frame (4), the first insulating outer frame (1) is connected to the second insulating outer frame (3), and the inner walls of the first insulating outer frame (1) and the second insulating outer frame (3) are covered on the outer side of the aluminum frame (4); The air guide cover (2) is fixed on the inner side of the first insulating outer frame (1); a gap is provided around the air guide cover (2) and the inner side wall of the first insulating outer frame (1) to form an air inlet (11); a gap is provided between the opposite surfaces of the air guide cover (2) and the PTC heating component (5) to form an air inlet channel (21); a notch groove (41) is provided on a side of the aluminum frame (4) facing the air guide cover (2); the notch groove (41) surrounds the aluminum frame (4); the notch groove (41) is connected to the air inlet (11), so that the airflow can pass through the air inlet (11) and the notch groove (41) in sequence and then enter the air inlet channel (21); The edge of the air guide cover (2) extends into the notch groove (41) of the aluminum frame (4) to form a circuitous air flow channel in the notch groove (41); A curved concave surface (23) is provided on a side of the air guide cover (2) opposite to the PTC heating component (5), and the curved concave surface (23) surrounds the center of the air guide cover (2); A smoothly transitioned conical air guide surface (22) is provided on the outside of the air guide cover (2); A connecting rib (24) is provided between the peripheral side of the air guide cover (2) and the inner side wall of the first insulating outer frame (1); The PTC heating assembly (5) comprises an aluminum shell plate and a PTC ceramic heating element encapsulated in the aluminum shell plate, and the outer wall of the aluminum shell plate is provided with heat dissipation fins.

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