Heat exchanger of automobile air conditioner

Abstract

The utility model provides an automobile air conditioner heat exchanger, which relates to the field of air conditioner heat exchangers and comprises a frame body, a copper coil pipe is connected to the inner side of the frame body, fins are connected to the outer wall of the copper coil pipe, an upper side plate of each fin is provided with an upper through hole, and meanwhile, the lower end of each fin is provided with a lower through hole. A horizontal upper pipe body is arranged on the upper side of the fin and communicated with the upper through hole, meanwhile, a horizontal lower pipe body is arranged on the lower side of the fin and communicated with the lower through hole, one end of the upper pipe body is connected with a second inlet, and the outer end of the second inlet is connected into an automobile compressor liquid return pipeline through a circulating pump. Meanwhile, one end of the lower pipe body is connected with a second outlet, and the outer end of the second outlet is connected into an automobile compressor liquid return pipeline. The air conditioner heat exchanger solves the problems that the refrigeration effect of an existing air conditioner heat exchanger cannot be further improved, and the automatic cleaning effect on the cooling fins is lacked.

Description

Technical Field

[0001] The utility model relates to the technical field of air-conditioning heat exchangers, in particular to an automobile air-conditioning heat exchanger. Background Art

[0002] The condenser is a component of the refrigeration system and a type of heat exchanger. It can convert gas or steam into liquid and quickly transfer the heat in the tube to the air near the tube. The working process of the condenser is a heat release process, so the condenser temperature is relatively high. After searching, the prior art (publication number: CN214949942U) records "a highly efficient and environmentally friendly automobile air-conditioning condenser, including an external connecting pipe, a highly efficient connecting structure, a top frame, an automobile air-conditioning condenser, a supporting foot, and a liquid outlet pipe. The right end of the external connecting pipe is conductively connected to the left end of the top of the automobile air-conditioning condenser. The bottoms of both ends of the automobile air-conditioning condenser are arranged on the supporting foot. The right end of the liquid outlet pipe is conductively connected to the left end of the bottom of the automobile air-conditioning condenser. The bottom of the top frame is welded to the top of the automobile air-conditioning condenser. The utility model uses external threaded connecting pipe heads of different diameters to connect external connecting pipes of different inner diameters, which increases the convenience of using the device. The device is provided with rear row condensing pipes and front row condensing pipes, which increases the heat dissipation area of ​​the condensing pipes and improves the working efficiency. The supporting foot uses a spring to buffer the impact on the automobile air-conditioning condenser, thereby improving the safety of the device."

[0003] Although the automobile air-conditioning condenser in the prior art has achieved improved work efficiency and safety, it still has some shortcomings: the existing air-conditioning condenser needs a cooling fan to dissipate heat, but the cooling effect of the fan is poor in the hot summer, which leads to the inability to improve the cooling effect; secondly, the condenser fins are easily contaminated by dust during long-term work, and the automatic cleaning effect cannot be achieved in the working state. Generally, the user will only disassemble and clean it after discovering serious contamination, which leads to inconvenience in use. Utility Model Content

[0004] In order to overcome the defects of the prior art, an automobile air-conditioning heat exchanger is provided to solve the problems that the refrigeration effect of the existing air-conditioning heat exchanger cannot be further improved and the automatic cleaning effect of the heat dissipation fins is lacking.

[0005] To achieve the above-mentioned purpose, a car air-conditioning heat exchanger is provided, comprising: a frame, a copper coil is connected to the inner side of the frame, and a fin is connected to the outer wall of the copper coil, and an upper through hole is opened on the upper side plate of the fin, and a lower through hole is opened at the lower end of the fin, a horizontal upper tube body is provided on the upper side of the fin, and the upper tube body is communicated with the upper through hole, and a horizontal lower tube body is provided on the lower side of the fin, and the lower tube body is communicated with the lower through hole, one end of the upper tube body is connected to a second inlet, and the outer end of the second inlet is connected to a liquid return pipeline of a car compressor through a circulating pump, and one end of the lower tube body is connected to a second outlet, and the outer end of the second outlet is connected to the liquid return pipeline of the car compressor, a fixing frame is provided on the front side of the frame, and a rotatably connected impeller blade is provided on the inner side of the fixing frame, and a brush is provided on the surface of the impeller blade facing the fin.

[0006] Furthermore, the frame is configured as a left and right side plate structure, and the right side plate of the frame is connected to a first inlet and a first outlet, and the outer ends of the first inlet and the first outlet are connected to the automobile air-conditioning pipeline, while the inner ends of the first inlet and the first outlet are connected to the inlet and outlet ends of the copper coil.

[0007] Furthermore, the upper through holes and the lower through holes are formed at the upper and lower ends of the fins on both sides of the frame edge, and horizontal connecting holes are formed at the upper and lower ends of the middle fins, and connecting pipes are connected between the connecting holes.

[0008] Furthermore, a curved tube is welded between the fins, and the curved tube is close to the front side of the fin, and the upper and lower ends of the curved tube are respectively connected to the connecting tube.

[0009] Furthermore, one end of the upper tube body and the lower tube body is fixed to the inner wall of the side plate of the frame body, and the upper tube body and the lower tube body do not exceed the upper and lower end surfaces of the frame body.

[0010] Furthermore, the fixing frame is configured as a circular ring structure, and the outer side of the fixing frame is fixed to the front side of the frame through a connecting rod, and the inner ring of the fixing frame is connected to the central axis of the impeller blade through a crossed fixing rod, and the impeller blade is rotationally connected to the central axis.

[0011] Furthermore, the fixed frame is arranged between the condenser and the cooling fan, and the brush on the rear side of the impeller blade is kept in contact with the front side of the fin.

[0012] The beneficial effects of the utility model are:

[0013] 1. When in use, under the normal working state of the condenser, the low-temperature refrigerant in the liquid return pipeline of the automobile compressor is passed through the circulation pump, the first inlet and the upper tube body, as well as the upper through hole, the connecting hole and the connecting pipe, so that the gaseous refrigerant enters the interior of the curved tube, and heat is exchanged with the air around the curved tube, so as to reduce the surrounding air temperature, and then under the blowing effect of the cooling fan, the heat dissipation effect of the fins is enhanced, thereby improving the refrigeration effect of the air conditioning system;

[0014] 2. When the cooling fan is in working state, the outside air is blown to the impeller blades in the middle of the fixed frame and drives the impeller blades to rotate, and then the brush connected to the back is driven to rotate through the impeller blades, so that the brush cleans the surface of the fins on the rear side. Since the air blows from the front side of the fins to the fins, more dust will accumulate on the front side of the fins, so the dust can be cleaned by the brush, thereby maintaining the airflow through the fin gap and improving the heat dissipation effect of the fins. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view structural schematic diagram of an embodiment of the utility model.

[0016] Figure 2 It is a schematic diagram of the fixing frame structure of an embodiment of the utility model.

[0017] Figure 3 It is a schematic diagram of a partial top view of the fin structure of an embodiment of the utility model.

[0018] Figure 4 It is a schematic diagram of a partial front cross-sectional structure of a fin according to an embodiment of the utility model.

[0019] In the figure: 1, frame; 11, first inlet; 12, first outlet; 13, copper coil; 14, fin; 141, upper through hole; 142, lower through hole; 15, connecting pipe; 16, connecting hole; 17, curved pipe; 2, fixing frame; 21, connecting rod; 22, impeller blade; 23, brush; 3, second inlet; 31, upper tube body; 4, second outlet; 41, lower tube body. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] Reference Figures 1 to 4As shown, the utility model provides an automobile air conditioning heat exchanger, comprising: a frame 1, a copper coil 13 is connected to the inner side of the frame 1, and a fin 14 is connected to the outer wall of the copper coil 13, and an upper through hole 141 is opened on the upper side plate of the fin 14, and a lower through hole 142 is opened at the lower end of the fin 14, a horizontal upper tube 31 is provided on the upper side of the fin 14, and the upper tube 31 is communicated with the upper through hole 141, and a horizontal lower tube 41 is provided on the lower side of the fin 14, and The lower tube body 41 is communicated with the lower through hole 142, one end of the upper tube body 31 is connected to the second inlet 3, and the outer end of the second inlet 3 is connected to the liquid return pipeline of the automobile compressor through a circulating pump, and one end of the lower tube body 41 is connected to the second outlet 4, and the outer end of the second outlet 4 is connected to the liquid return pipeline of the automobile compressor. A fixing frame 2 is provided on the front side of the frame 1, and a rotatably connected impeller blade 22 is provided on the inner side of the fixing frame 2, and a brush 23 is provided on the surface of the impeller blade 22 on one side facing the fin 14.

[0022] Specifically, in this embodiment, the frame 1, the fins 14, the copper coil 13, and the fixing frame 2 constitute the main structure of the automobile air-conditioning heat exchanger involved in this application.

[0023] The frame 1, the fins 14 and the copper coil 13 are configured as the automobile air-conditioning condenser structure in the prior art.

[0024] Specifically, the second inlet 3 and the second outlet 4 are connected to the liquid return pipeline of the automobile compressor, and the liquid return pipeline of the compressor contains low-temperature and low-pressure gaseous refrigerant. Therefore, when the gaseous refrigerant is pumped into the curved tube 17, the heat dissipation effect of the cooling fan is enhanced.

[0025] It should be noted that the second inlet 3 and the second outlet 4 are a bypass structure connected in the compressor liquid return pipeline, and do not affect the circulation of the refrigerant.

[0026] like Figure 1 , Figure 3 and Figure 4 As shown, the frame 1 is configured as a left and right side plate structure, and the right side plate of the frame 1 is connected with a first inlet 11 and a first outlet 12, and the outer ends of the first inlet 11 and the first outlet 12 are connected to the automobile air conditioning pipeline, and the inner ends of the first inlet 11 and the first outlet 12 are connected to the inlet and outlet ends of the copper coil 13, the upper through hole 141 and the lower through hole 142 are opened at the upper and lower ends of the fins 14 located on both sides of the edge of the frame 1, and the upper and lower ends of the fins 14 located in the middle are opened with horizontal connecting holes 16, and connecting pipes 15 are connected between the connecting holes 16, curved tubes 17 are welded between the fins 14, and the curved tubes 17 are close to the front side of the fins 14, and the upper and lower ends of the curved tubes 17 are respectively connected to the connecting tubes 15, one end of the upper tube body 31 and the lower tube body 41 are fixed to the inner wall of the side plate of the frame 1, and the upper tube body 31 and the lower tube body 41 do not exceed the upper and lower end surfaces of the frame 1.

[0027] Specifically, the curved tube 17 is located on the front side of the overall structure of the fin 14 and covers the entire area on the front side of the fin 14. The refrigerant passing through the interior of the curved tube 17 reduces the air temperature around the curved tube 17, thereby reducing the temperature of the wind blowing toward the fin 14, thereby improving the heat dissipation efficiency of the fin 14.

[0028] like Figure 2 As shown, the fixing frame 2 is set as a circular ring structure, and the outer side of the fixing frame 2 is fixed to the front side of the frame 1 through a connecting rod 21, and the inner ring of the fixing frame 2 is connected to the central axis of the impeller blade 22 through a cross fixing rod, and the impeller blade 22 is rotatably connected to the central axis. The fixing frame 2 is arranged between the condenser and the cooling fan, and the brush 23 on the rear side of the impeller blade 22 maintains contact with the front side of the fin 14.

[0029] Specifically, the structure of the impeller blade 22 satisfies the requirement of the airflow driving the impeller blade 22 to rotate under the existing technology, and the brush 23 is made of nylon material. Under the rotation of the impeller blade 22, the blowing airflow of the fan is not affected, and at the same time the brush 23 is driven to remove dust and clean the fins 14.

[0030] When in use, under the normal working state of the condenser, the low-temperature refrigerant in the liquid return pipeline of the automobile compressor is passed through the circulation pump, the first inlet and the upper tube body, as well as the upper through hole, the connecting hole and the connecting pipe, so that the gaseous refrigerant enters the interior of the curved tube, and heat is exchanged with the air around the curved tube to reduce the surrounding air temperature, and then under the blowing action of the cooling fan, the heat dissipation effect of the fins is enhanced, thereby improving the cooling effect of the air-conditioning system. When the cooling fan is in working state, the outside air is blown to the impeller blades in the middle of the fixed frame and drives the rotation of the impeller blades, and then the brush connected to the back is driven to rotate through the impeller blades, so that the brush cleans the rear fin surface.

[0031] The automobile air-conditioning heat exchanger of the utility model can effectively solve the problems that the existing air-conditioning heat exchanger has the inability to further improve the cooling effect and lacks the automatic cleaning effect of the heat dissipation fins. It further improves the cooling effect of the automobile air-conditioning heat exchanger on the basis of the existing automobile air-conditioning heat exchanger technology, and at the same time increases the automatic cleaning effect of the fins.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automobile air conditioning heat exchanger, comprising: The frame (1) is characterized in that: a copper coil (13) is connected to the inner side of the frame (1), and a fin (14) is connected to the outer wall of the copper coil (13), and an upper through hole (141) is opened on the upper side plate of the fin (14), and a lower through hole (142) is opened at the lower end of the fin (14), a horizontal upper tube (31) is provided on the upper side of the fin (14), and the upper tube (31) is connected to the upper through hole (141), and a horizontal lower tube (41) is provided on the lower side of the fin (14), and the lower tube (41) is connected to the lower through hole (142). The upper tube body (31) is connected to a second inlet (3) at one end, and the outer end of the second inlet (3) is connected to a liquid return pipeline of an automobile compressor via a circulating pump; the lower tube body (41) is connected to a second outlet (4) at one end, and the outer end of the second outlet (4) is connected to a liquid return pipeline of an automobile compressor; a fixing frame (2) is provided on the front side of the frame body (1), and a rotatably connected impeller blade (22) is provided on the inner side of the fixing frame (2), and a brush (23) is provided on the surface of the impeller blade (22) on one side facing the fin (14).

2. The automobile air conditioning heat exchanger according to claim 1, characterized in that: The frame (1) is configured as a left and right side plate structure, and the right side plate of the frame (1) is connected to a first inlet (11) and a first outlet (12), and the outer ends of the first inlet (11) and the first outlet (12) are connected to the automobile air conditioning pipeline, while the inner ends of the first inlet (11) and the first outlet (12) are connected to the inlet and outlet ends of the copper coil (13).

3. The automobile air conditioning heat exchanger according to claim 1, characterized in that: The upper through hole (141) and the lower through hole (142) are provided at the upper and lower ends of the fins (14) located on both sides of the edge of the frame (1), and the upper and lower ends of the fins (14) located in the middle are provided with horizontal communication holes (16), and connecting pipes (15) are connected between the communication holes (16).

4. The automobile air conditioning heat exchanger according to claim 1, characterized in that: A curved tube (17) is welded between the fins (14), the curved tube (17) is close to the front side of the fin (14), and the upper and lower ends of the curved tube (17) are respectively connected to the connecting tube (15).

5. The automobile air conditioning heat exchanger according to claim 1, characterized in that: One end of the upper tube (31) and the lower tube (41) are fixed to the inner wall of the side plate of the frame (1), and the upper tube (31) and the lower tube (41) do not exceed the upper and lower end surfaces of the frame (1).

6. The automobile air conditioning heat exchanger according to claim 1, characterized in that: The fixing frame (2) is configured as a circular ring structure, and the outer side of the fixing frame (2) is fixed to the front side of the frame (1) via a connecting rod (21), and the inner ring of the fixing frame (2) is connected to the central axis of the impeller blade (22) via crossed fixing rods, and the impeller blade (22) is rotationally connected to the central axis.

7. The automobile air conditioning heat exchanger according to claim 1, characterized in that: The fixing frame (2) is arranged between the condenser and the cooling fan, and the brush (23) on the rear side of the impeller blade (22) is kept in contact with the front side of the fin (14).

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