Fin-plate heat exchanger

Abstract

The utility model discloses a fin-plate heat exchanger which comprises plate frames arranged at intervals, a plurality of fin-plate heat exchange units are fixedly connected between the plate frames, and the upper ends and the lower ends of the fin-plate heat exchange units are communicated through a plurality of through pipes. The fin-plate heat exchanger further comprises a normal-temperature air cooling structure, the normal-temperature air cooling structure comprises an air cooling pipe fixedly connected between the plate frames, and a plurality of exhaust holes are formed in the air cooling pipe. The fin-plate heat exchange units are arranged on the periphery of the air cooling pipe. A fan is assembled and communicated with the top of the air cooling pipe; the fin-plate heat exchanger further comprises a low-temperature air cooling structure, the low-temperature air cooling structure comprises a spiral coiled pipe coiled on the air cooling pipe, and the bottom of the spiral coiled pipe is communicated with refrigerant inlet equipment through a refrigerant inlet pipe. According to the device, normal-temperature air cooling and low-temperature air cooling are achieved, in the low-temperature air cooling process, the time for low-temperature airflow to stay in the air blocking barrel is prolonged through the air blocking barrel, and energy saving is achieved through the mode.

Description

Technical Field

[0001] The utility model belongs to the technical field of fin plate heat exchange devices, in particular to a fin plate heat exchanger. Background Art

[0002] A heat exchanger is a device that exchanges heat between a high-temperature working medium and a cooling medium, thereby cooling the medium. Heat exchangers are widely used in industry, particularly in thermal engines. Specifically, the high temperatures generated by thermal engines during operation can cause damage if not promptly cooled.

[0003] The fin plate heat exchanger is an air-cooled heat exchange device. Specifically, during operation, after the high-temperature medium passes through the fin plate heat exchanger, the cooling airflow is used to dissipate heat from the fin plate heat exchanger, and the fin plate heat exchanger is cooled after heat exchange with the cooling airflow.

[0004] Currently, fin-plate heat exchangers typically use fans to pump ambient air from the working environment toward the fin-plate heat exchanger. However, in actual operation, in high-temperature environments, such as those in workshops, the ambient air temperature is also relatively high, resulting in unsatisfactory cooling effects.

[0005] Especially when high-load equipment needs to be cooled quickly, even increasing the wind speed generated by the fan still cannot quickly reduce the temperature. Therefore, how to adjust the temperature in the workshop environment according to the room temperature? For example, in the summer when the indoor ambient temperature is high, the air flow is cooled and then heat exchanged with the fin heat exchanger, while in the winter when the indoor ambient temperature is low, normal air flow is used for cooling. This is not only energy-saving and environmentally friendly, but also has high cooling efficiency. At the same time, it can also greatly reduce energy consumption, which is of great significance for improving the working efficiency of heat exchange equipment and achieving energy conservation and environmental protection. Utility Model Content

[0006] Based on the above background, the purpose of the present invention is to provide a fin-plate heat exchanger.

[0007] In order to achieve the above objectives, the present invention adopts the following technical solutions:

[0008] A fin-plate heat exchanger comprises plate racks arranged at intervals, wherein a plurality of fin-plate heat exchange units are fixedly connected between the plate racks, and the upper and lower ends of the fin-plate heat exchange units are connected by a plurality of through pipes;

[0009] The fin-plate heat exchanger further includes a normal temperature air cooling structure, which includes an air cooling pipe fixedly connected between the plate frames, and a plurality of exhaust holes are opened on the air cooling pipe;

[0010] The fin heat exchange unit is arranged around the air cooling pipe;

[0011] The top of the air cooling pipe is connected to a fan;

[0012] The fin-plate heat exchanger further includes a low-temperature air-cooling structure, which includes a spirally coiled tube coiled on the air-cooling tube, and the bottom of the spirally coiled tube is connected to the refrigerant inlet device through the refrigerant inlet pipe.

[0013] Preferably, the fin heat exchange unit includes a heat dissipation pipe, and a plurality of heat dissipation fins are fixedly connected to the heat dissipation pipe.

[0014] Preferably, the tops and bottoms of the heat dissipation pipes are connected via U-shaped through pipes;

[0015] The heat dissipation pipes are connected in series into one body through the U-shaped through pipe.

[0016] Preferably, the lower end of the spirally coiled tube passes through the plate frame, and the lower end of the spirally coiled tube is sealed and welded to the refrigerant inlet pipe.

[0017] Preferably, the fin-plate heat exchanger further includes a wind shielding mechanism;

[0018] Through the wind shielding mechanism, the heat exchange efficiency between the low-temperature airflow and the fin heat exchange unit is increased during the operation of the low-temperature air cooling structure.

[0019] Preferably, the wind shield mechanism comprises a wind shield cylinder of a cylindrical structure, and an inner side wall of the wind shield cylinder is spaced apart from the fin heat exchange unit;

[0020] The lower end of the windshield is fixedly connected to the outer side wall of the plate frame at the lower end.

[0021] Preferably, a conical air guide cover is fixedly connected to the plate frame at the upper end;

[0022] The conical air guide cover is spaced apart from the top of the wind shield. During the air cooling process, part of the cooling air flow is discharged upward from between the conical air guide cover and the wind shield, and part of the cooling air flow is discharged downward from the gap between the wind shield and the plate frame.

[0023] Preferably, the plate frame is in the shape of a disc.

[0024] Preferably, the fin plate heat exchange unit at the liquid inlet end is connected to a high-temperature working medium inlet pipe, and the fin plate heat exchange unit at the liquid outlet end is connected to a low-temperature working medium inlet and outlet pipe.

[0025] The utility model has the following beneficial effects:

[0026] 1. The fin-plate heat exchanger also includes a low-temperature air-cooling structure, which includes a spirally coiled tube coiled on the air-cooling pipe. According to the existing method, the bottom of the spirally coiled tube is connected to the refrigerant inlet device (on the refrigerator) through the refrigerant inlet pipe. Specifically, the lower end of the spirally coiled tube passes through the plate frame, and the lower end of the spirally coiled tube is sealed and welded to the refrigerant inlet pipe. During operation, the refrigerator pumps the cooling medium into the spirally coiled tube, and because the spirally coiled tube is coiled on the air-cooling pipe (the air-cooling pipe and the spirally coiled tube coil preferably maintain a certain distance). At this time, after the airflow is pumped out from the air-cooling pipe, it encounters the spirally coiled tube and is cooled, and then the airflow in the cooled state realizes rapid heat exchange with the high-temperature fin-plate heat exchange unit.

[0027] 2. Through the wind shield mechanism, the heat exchange efficiency between the low-temperature airflow and the fin heat exchange unit is increased during the operation of the low-temperature air-cooling structure. Specifically, the wind shield mechanism includes a cylindrical wind shield, and the inner wall of the wind shield is spaced apart from the fin heat exchange unit. During the air-cooling process, part of the cooling airflow is discharged upward from between the conical air guide cover and the wind shield, and part of the cooling airflow is discharged downward from the gap between the wind shield and the plate frame. In this way, the time that the low-temperature airflow stays in the wind shield during the air-cooling process is increased, thereby achieving energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0029] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0030] Figure 2 This is a schematic structural diagram of the fin plate heat exchange unit in an embodiment of the present utility model;

[0031] Figure 3 This is a schematic structural diagram of the fin plate heat exchange unit in an embodiment of the present utility model;

[0032] Figure 4 For the embodiment of the utility model Figure 2 A structural diagram from another perspective;

[0033] Figure 5 This is a schematic diagram of the planar structure of the fin heat exchange unit according to an embodiment of the present utility model.

[0034] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] In addition, in this utility model, the descriptions of "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0038] Example 1

[0039] like Figure 1-5 As shown, a fin-plate heat exchanger includes spaced plate racks 2 (plate racks 2 are disc-shaped), with a plurality of fin-plate heat exchange units fixedly connected between the plate racks 2 (the fin-plate heat exchange units are distributed in a circular manner around the plate racks 2). The upper and lower ends of the fin-plate heat exchange units are connected by a plurality of through pipes 43.

[0040] Specifically, the fin heat exchange unit includes a heat pipe 41, to which a plurality of heat fins 42 are fixedly connected. The heat pipes 41 are connected in series via a through pipe 43. Specifically, the top and bottom of the heat pipes 41 are connected via a U-shaped through pipe 43; the U-shaped through pipe connects the heat pipes 41 in series.

[0041] In order to achieve normal air cooling (such as when the workshop ambient temperature is low, such as in winter), the above-mentioned fin-plate heat exchanger also includes a normal temperature air cooling structure, which includes an air cooling pipe 32 fixedly connected between the plate frames 2, and a plurality of exhaust holes 321 are opened on the air cooling pipe 32.

[0042] At the same time, the top of the air-cooling pipe 32 passes through the upper end of the plate frame 2. According to conventional methods, the top of the air-cooling pipe 32 is connected to a fan (not shown). Specifically, the fan is a conventional heat dissipation fan disclosed in the prior art, such as an axial flow fan (not shown). Specifically, the axial flow fan is installed in a fan pipe, and the fan pipe is connected to the air-cooling pipe 32 according to conventional methods, specifically by flange installation and connection to the air inlet pipe 31 connected to the top of the air-cooling pipe 32.

[0043] During actual operation, in order to cope with high ambient temperature in the workshop (such as in summer), the airflow discharged from the heat dissipation pipe 41 is cooled, and then the cooled airflow is blown to the fin heat exchange unit. Because the airflow is cooled, the heat exchange efficiency and speed with the fin heat exchange unit are faster, thereby achieving rapid cooling of the high-temperature medium passing through the fin heat exchange unit.

[0044] Specifically, the fin-plate heat exchanger also includes a low-temperature air-cooling structure comprising a spirally coiled tube 5 wound around the air-cooling tube 32. According to conventional methods, the bottom of the spirally coiled tube 5 is connected to the refrigerant inlet device (the refrigerator) via a refrigerant inlet pipe. Specifically, the lower end of the spirally coiled tube 5 passes through the plate frame 2, and the lower end of the spirally coiled tube 5 is seal-welded to the refrigerant inlet pipe 51.

[0045] During operation, the refrigerator pumps the cooling medium into the spirally coiled tube 5. Since the spirally coiled tube 5 is coiled around the air cooling tube 32 (preferably, a certain distance is maintained between the air cooling tube 32 and the spirally coiled tube 5), the airflow is pumped out of the air cooling tube 32 and then encounters the spirally coiled tube 5, where it is cooled down. The cooled airflow then quickly exchanges heat with the high-temperature fin heat exchange unit.

[0046] During actual operation, according to the existing method, a circulation pipe (not shown) can be connected to the top of the spirally coiled tube 5, and the circulation pipe is connected to the refrigerant inlet equipment, so that the refrigerant inlet equipment can circulate the cooling medium in and out.

[0047] The same as the existing method, the above-mentioned fin plate heat exchange unit located at the liquid inlet end is connected to the high-temperature working medium inlet pipe 442, and the fin plate heat exchange unit located at the liquid outlet end is connected to the low-temperature working medium inlet and outlet pipes 441.

[0048] Example 2

[0049] like Figure 1-5 As shown, this embodiment, based on the structure of Example 1, further includes a wind shielding mechanism to enhance the cooling effect of the low-temperature airflow and the fin-plate heat exchange unit when the low-temperature air cooling structure is used. The wind shielding mechanism increases the heat exchange efficiency between the low-temperature airflow and the fin-plate heat exchange unit during operation of the low-temperature air cooling structure.

[0050] The wind shield mechanism includes a wind shield cylinder 1 of a cylindrical structure, and an inner side wall of the wind shield cylinder 1 is spaced apart from the fin heat exchange unit.

[0051] Specifically, the lower end of the windshield 1 is fixedly connected to the outer wall of the frame 2 at the lower end position. Specifically, according to the existing method, the lower end of the windshield 1 is fastened to the outer wall of the frame 2 by means of bolts (not shown).

[0052] At the same time, a conical air guide 2 is fixedly connected to the upper end of the plate frame 2. This conical air guide 2 is spaced apart from the top of the windshield 1. During the cooling process, part of the cooling airflow is discharged upward from between the conical air guide 2 and the windshield 1, while part of the cooling airflow is discharged downward from the gap between the windshield 1 and the plate frame 2. This method increases the time that the low-temperature airflow remains in the windshield 1 during the cooling process, thereby achieving energy savings.

[0053] When the normal temperature air cooling structure is used for air cooling, the wind shield 1 is removed from the plate frame 2 during operation.

[0054] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A fin-plate heat exchanger, characterized in that: It comprises plate racks arranged at intervals, wherein a plurality of fin plate heat exchange units are fixedly connected between the plate racks, and the upper and lower ends of the fin plate heat exchange units are connected by a plurality of through pipes; The fin-plate heat exchanger further includes a normal temperature air cooling structure, which includes an air cooling pipe fixedly connected between the plate frames, and a plurality of exhaust holes are opened on the air cooling pipe; The fin heat exchange unit is arranged around the air cooling pipe; The top of the air cooling pipe is connected to a fan; The fin-plate heat exchanger further includes a low-temperature air-cooling structure, which includes a spirally coiled tube coiled on the air-cooling tube, and the bottom of the spirally coiled tube is connected to the refrigerant inlet device through the refrigerant inlet pipe.

2. The fin-plate heat exchanger according to claim 1, characterized in that: The fin heat exchange unit includes a heat dissipation pipe, and a plurality of heat dissipation fins are fixedly connected to the heat dissipation pipe.

3. The fin-plate heat exchanger according to claim 2, characterized in that: The tops and bottoms of the heat dissipation pipes are connected via U-shaped through pipes; The heat dissipation pipes are connected in series into one body through the U-shaped through pipe.

4. The fin-plate heat exchanger according to claim 2, characterized in that: The lower end of the spirally coiled tube passes through the plate frame, and the lower end of the spirally coiled tube is sealed and welded to the refrigerant inlet pipe.

5. The fin-plate heat exchanger according to claim 1, characterized in that: The fin-plate heat exchanger further includes a wind shielding mechanism; Through the wind shielding mechanism, the heat exchange efficiency between the low-temperature airflow and the fin heat exchange unit is increased during the operation of the low-temperature air cooling structure.

6. The fin-plate heat exchanger according to claim 5, characterized in that: The wind shield mechanism comprises a wind shield cylinder of a cylindrical structure, and an inner side wall of the wind shield cylinder is spaced apart from the fin heat exchange unit; The lower end of the windshield is fixedly connected to the outer side wall of the plate frame at the lower end.

7. The fin-plate heat exchanger according to claim 6, characterized in that: A conical air guide cover is fixedly connected to the plate frame at the upper end; The conical air guide cover is spaced apart from the top of the wind shield. During the air cooling process, part of the cooling air flow is discharged upward from between the conical air guide cover and the wind shield, and part of the cooling air flow is discharged downward from the gap between the wind shield and the plate frame.

8. The fin-plate heat exchanger according to claim 1, characterized in that: The plate frame is in the shape of a disc.

9. The fin-plate heat exchanger according to claim 1, characterized in that: The fin plate heat exchange unit located at the liquid inlet end is connected to a high-temperature working medium inlet pipe, and the fin plate heat exchange unit located at the liquid outlet end is connected to a low-temperature working medium inlet and outlet pipe.

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