Pipe protection structure of refrigeration evaporator

Abstract

The utility model discloses a pipe protection structure of a refrigeration evaporator, which belongs to the technical field of refrigeration and comprises an inner barrel and an outer barrel, an air return pipe is spirally wound on the outer wall of the inner barrel, the rear end of the air return pipe extends towards the rear end of the inner barrel, a throttle pipe is welded at the winding front end of the air return pipe, and the size of the throttle pipe is smaller than that of the air return pipe. The inner barrel is further provided with an inner barrel groove and an inner barrel clamping groove, the welding position of the air return pipe and the throttling pipe is located in the inner barrel groove, the throttling pipe is bent and extends in the extending direction of the air return pipe, the bent position of the throttling pipe is located in the inner barrel clamping groove, and the outer barrel is arranged on the periphery of the inner barrel and the air return pipe in a sleeving mode. According to the structure, the pipe cost can be reduced, meanwhile, layout of pipes is facilitated, the occupied space of the pipes is saved, small-scale production and machining of the refrigeration evaporator are facilitated, damage to the welding position caused by foreign matter can be avoided, the bent position can be effectively fixed, and the displacement problem of the throttle pipe after assembly is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration, in particular to a pipe protection structure for a refrigeration evaporator. Background Art

[0002] Chinese utility model patent number CN202221566036.2 discloses a snow-melting refrigeration evaporator cylinder. A refrigerant inlet and outlet adapter are welded to the inner wall of the cylinder body. The inlet and outlet adapters are connected to the inlet and outlet refrigerant bodies, respectively. Furthermore, a spiral refrigeration guide vane is integrally formed on the outer wall of the cylinder body. The inlet and outlet adapters are located at the top and bottom of the spiral refrigeration guide vane, respectively. While this increases the evaporation area and improves refrigeration efficiency, the wiring of the inlet and outlet refrigerant pipes takes up a lot of space, hindering the miniaturization of the evaporator cylinder. Furthermore, the inlet and outlet refrigerant pipes are made of copper tubes and are of the same size, resulting in high production costs. Therefore, further improvements are necessary. Utility Model Content

[0003] The utility model aims to provide a pipe protection structure for a refrigeration evaporator, so as to overcome the deficiencies in the prior art.

[0004] A pipe protection structure for a refrigeration evaporator designed for this purpose includes an inner barrel and an outer barrel, a return air pipe is spirally wound around the outer wall of the inner barrel, the rear end of the return air pipe extends toward the rear end of the inner barrel, and a throttling pipe is welded to the front end of the wound pipe, the size of the throttling pipe is smaller than the size of the return air pipe, and an inner barrel groove and an inner barrel slot are also provided on the inner barrel, the welding position of the return air pipe and the throttling pipe is located in the inner barrel groove, the throttling pipe is bent and extended along the extension direction of the return air pipe, and its bending position is positioned in the inner barrel slot, and the outer barrel is sleeved on the outer periphery of the inner barrel and the return air pipe.

[0005] The return air pipe is a copper pipe, and the throttling pipe is an aluminum pipe.

[0006] The front end of the inner barrel is recessed with an annular step, and a front end cover plate is fixedly mounted on the annular step. The inner barrel groove is formed between the front end cover plate and the annular step. At least part of the return air pipe and the throttle pipe, as well as the welding position, are located in the inner barrel groove.

[0007] The inner barrel slot is recessed at the top of the annular step, and a bending positioning groove is provided on the front end cover. The bending positioning groove corresponds to the inner barrel slot, and the bending position is positioned in the bending positioning groove and the inner barrel slot.

[0008] A separation cylinder is provided inside the inner barrel, and a first inner barrel cavity and a second inner barrel cavity are separated from each other by the separation cylinder. The front end of the first inner barrel cavity is sealed, and the rear end is provided with a first inner barrel cavity rear opening. The front end and rear end of the second inner barrel cavity are respectively provided with a second inner barrel cavity front opening and a second inner barrel cavity rear opening. A front end cover plate is provided on the front end cover plate, and the front end cover plate opening corresponds to the second inner barrel cavity front opening.

[0009] The rear end of the outer barrel is provided with an outer barrel rear opening, and is sleeved on the periphery of the inner barrel and the return air pipe through the outer barrel rear opening. The rear end of the return air pipe extends outward toward the rear opening of the first inner barrel cavity and the rear opening of the outer barrel, and is provided with a return air pipe inlet. The throttle pipe is bent on the front opening of the second inner barrel cavity and the front end cover plate opening (70.1), and extends outward toward the rear opening of the second inner barrel cavity and the rear opening of the outer barrel. The extended rear end of the throttle pipe is provided with a throttle pipe outlet.

[0010] A rear end cover is provided at the rear end of the inner barrel, and the rear end cover is provided on the rear opening of the second inner barrel cavity and the rear opening of the outer barrel. The rear end cover is provided with a first opening of the rear end cover corresponding to the rear opening of the first inner barrel cavity and a second opening of the rear end cover corresponding to the rear opening of the second inner barrel cavity. The first opening of the rear end cover is located on one side of the second opening of the rear end cover.

[0011] A rear plate positioning groove is also provided on the rear end cover plate, and the rear plate positioning groove is located on one side of the second opening of the rear end cover plate. The rear end of the return air pipe is positioned on the rear end cover plate, and the pipe section extending outward is bent and positioned on the rear plate positioning groove. The pipe section extending outward of the throttle pipe passes through the second opening of the rear end cover plate.

[0012] The front end of the outer barrel is provided with an outer barrel front opening, the outer barrel front opening is provided with a bearing, and a transmission shaft is rotatably connected through the bearing.

[0013] The front opening of the outer barrel is recessed toward the rear opening of the outer barrel and is provided with a front positioning piece. The front positioning piece is positioned on the front opening of the outer barrel and is connected with the bearing. A positioning piece opening is provided on the front positioning piece. The transmission shaft is located in the second inner barrel cavity and is rotatably provided on the bearing. The front end of the transmission shaft passes through the positioning piece opening, and the rear end passes through the second opening of the rear end cover plate.

[0014] The utility model improves the above structure by welding a small-sized throttle tube and a large-sized return air tube to each other, thereby effectively reducing the pipe cost while ensuring that the cold evaporator can work normally. Moreover, the shielding effect of the inner barrel groove is utilized so that the welding position between the return air tube and the throttle tube can be shielded by the inner barrel groove to avoid damage to the welding position by foreign matter, thereby ensuring that the return air tube and the throttle tube can be stably connected. In addition, the throttle tube can extend in the same direction as the return air tube, which is beneficial to the layout of the pipes, saves the space occupied by the pipes, and facilitates the miniaturization of the production and processing of the refrigeration evaporator. In addition, the positioning effect of the inner barrel slot is utilized so that the bending position of the throttle tube when extended can be positioned in the inner barrel slot, thereby effectively fixing the throttle tube and avoiding displacement problems after assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the assembly structure of an embodiment of the present utility model.

[0016] Figure 2 This is a schematic diagram of the assembly structure from another perspective of an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the assembly cross-sectional structure of an embodiment of the present utility model.

[0018] Figure 4 This is a schematic diagram of the assembly structure after omitting the outer barrel in one embodiment of the present invention.

[0019] Figure 5 This is a schematic diagram of the exploded structure of an embodiment of the present invention.

[0020] Figure 6 This is a schematic diagram of the exploded structure of an embodiment of the present invention from another perspective. DETAILED DESCRIPTION

[0021] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] See also Figures 1-6The pipe protection structure of the refrigeration evaporator includes an inner barrel 40 and an outer barrel 50. A return air pipe 60 is spirally wound around the outer wall of the inner barrel 40. The rear end of the return air pipe 60 extends toward the rear end of the inner barrel 40, and a throttle tube 61 is welded to the front end of the wound portion. The size of the throttle tube 61 is smaller than that of the return air pipe 60. The inner barrel 40 is also provided with an inner barrel groove 40.7 and an inner barrel clamping groove 40.8. The welding position A of the return air pipe 60 and the throttle tube 61 is located in the inner barrel groove 40.7. The throttle tube 61 is bent and extended along the extension direction of the return air pipe 60, and its bending position B is positioned in the inner barrel clamping groove 40.8. The outer barrel 50 is sleeved on the outer periphery of the inner barrel 40 and the return air pipe 60.

[0024] This embodiment utilizes a small-sized throttle tube 61 and a large-sized return air tube 60 to be welded to each other, effectively reducing its pipe cost while ensuring the normal operation of the cold evaporator. Moreover, the shielding effect of the inner barrel groove 40.7 is utilized to enable the welding position A between the return air tube 60 and the throttle tube 61 to be shielded by the inner barrel groove 40.7 to prevent foreign matter from damaging the welding position A, thereby ensuring a stable connection between the return air tube 60 and the throttle tube 61. In addition, the throttle tube 61 can extend in the same direction as the return air tube 60, which is beneficial to the layout of the pipes, saves the space occupied by the pipes, and facilitates the miniaturization of the production and processing of the refrigeration evaporator. In addition, the positioning effect of the inner barrel slot 40.8 is utilized to enable the bending position B of the throttle tube 61 when extended to be positioned within the inner barrel slot 40.8, thereby effectively fixing the throttle tube 61 and preventing it from displacement after assembly.

[0025] The return air pipe 60 is a copper pipe, and the throttling pipe 61 is an aluminum pipe. Welding pipes made of different materials can reduce the production cost of the pipes.

[0026] An annular step 40.9 is recessed at the front end of the inner barrel 40, and a front end cover plate 70 is fixedly mounted on the annular step 40.9. An inner barrel groove 40.7 is formed between the front end cover plate 70 and the annular step 40.9. At least part of the return air pipe 60 and the throttle pipe 61, as well as the welding position A, are located in the inner barrel groove 40.7.

[0027] In this embodiment, the front end cover plate 70 is fixed to the top of the annular step 40.9 by fasteners. At the same time, the size of the front end cover plate 70 is larger than the size of the annular step 40.9, so that an inner barrel groove 40.7 can be formed between the two. The head and tail parts of the return air pipe 60 and the throttle pipe 61, as well as the welding position A of the two are all located in the inner barrel groove 40.7.

[0028] The inner barrel slot 40.8 is recessed at the top of the annular step 40.9, and a bending positioning groove 71 is provided on the front cover 70. The bending positioning groove 71 corresponds to the inner barrel slot 40.8, and the bending position B is positioned in the bending positioning groove 71 and the inner barrel slot 40.8.

[0029] During assembly, the left and right sides of the bending position B of this embodiment can be positioned on the inner barrel slot 40.8, and the lower bottom can be positioned on the bending positioning groove 71, which not only effectively positions the bending position B, but also avoids the problem of breakage caused by excessive bending of the throttle tube 61.

[0030] A separation cylinder 40.1 is provided inside the inner barrel 40, and the separation cylinder 40.1 separates a first inner barrel cavity 40.2 and a second inner barrel cavity 40.3 which are independent of each other. The front end of the first inner barrel cavity 40.2 is sealed, and the rear end is provided with a first inner barrel cavity rear opening 40.4. The front end and rear end of the second inner barrel cavity 40.3 are respectively provided with a second inner barrel cavity front opening 40.5 and a second inner barrel cavity rear opening 40.6. A front end cover plate opening 70 is provided on the front end cover plate 70, and the front end cover plate opening 70.1 corresponds to the second inner barrel cavity front opening 40.5.

[0031] The rear end of the outer barrel 50 is provided with an outer barrel rear opening 50.1, and is sleeved on the outer periphery of the inner barrel 40 and the return air pipe 60 through the outer barrel rear opening 50.1. The rear end of the return air pipe 60 extends outward toward the first inner barrel cavity rear opening 40.4 and the outer barrel rear opening 50.1, and is provided with a return air pipe inlet 60.1. The throttle pipe 61 is bent on the second inner barrel cavity front opening 40.5 and the front end cover opening 70.1, and extends outward toward the second inner barrel cavity rear opening 40.6 and the outer barrel rear opening 50.1. The extended rear end of the throttle pipe 61 is provided with a throttle pipe outlet 61.1.

[0032] In this embodiment, the return air pipe 60 and the throttle pipe 61 extend outward respectively, and are connected to the refrigerant end through the return air pipe inlet 60.1 and the throttle pipe outlet 61.1 respectively, so that the refrigerant enters the return air pipe 60 through the return air pipe inlet 60.1, enters the throttle pipe 61, and is then discharged from the throttle pipe outlet 61.1. At the same time, since the return air pipe 60 is spirally wound, it is beneficial to increase the evaporation area, which not only makes the cooling more uniform and rapid, improves the evaporation efficiency, but also is more energy-saving and efficient.

[0033] A rear end cover 80 is provided at the rear end of the inner barrel 40, and the rear end cover 80 is covered on the rear opening 40.6 of the second inner barrel cavity and the rear opening 50.1 of the outer barrel. The rear end cover 80 is provided with a first rear end cover opening 80.1 corresponding to the rear opening 40.4 of the first inner barrel cavity and a second rear end cover opening 80.2 corresponding to the rear opening 40.6 of the second inner barrel cavity. The first rear end cover opening 80.1 is located on one side of the second rear end cover opening 80.2.

[0034] The rear end cover plate 80 is also provided with a rear plate positioning groove 80.3, which is located on one side of the second opening 80.2 of the rear end cover plate. The rear end of the return air pipe 60 is positioned on the rear end cover plate 80, and the pipe section extending outward is bent and positioned on the rear plate positioning groove 80.3. The pipe section extending outward of the throttle tube 61 passes through the second opening 80.2 of the rear end cover plate.

[0035] In this embodiment, the front end of the return air duct 60 is positioned by the front cover plate 70, and the rear end of the return air duct 60 is positioned by the rear cover plate 80, so as to avoid the problem of displacement of the front and rear ends of the return air duct 60 after assembly. That is, after the return air duct 60 is assembled, its front and rear ends are respectively positioned by the front cover plate 70 and the rear end cover plate 80, thereby ensuring that the return air duct 60 can be firmly spirally wound on the outer wall of the inner barrel 40, so as to improve the position and assembly stability of the return air duct 60. In addition, the positioning and cooperation of the rear plate positioning groove 80.3 is utilized so that the pipe section extending outward of the return air duct 60 can be positioned on the rear plate positioning groove 80.3 when bending. This not only effectively positions the bending position of the return air duct 60, but also avoids the problem of breakage caused by excessive bending of the return air duct 60.

[0036] The front end of the outer barrel 50 is provided with an outer barrel front opening 50.4, and a bearing 90 is provided on the outer barrel front opening 50.4, and the transmission shaft 10 is rotatably connected through the bearing 90.

[0037] The front opening 50.4 of the outer barrel is recessed toward the rear opening 50.1 of the outer barrel and is provided with a front positioning member 20. The front positioning member 20 is positioned on the front opening 50.4 of the outer barrel and is connected with the bearing 90. A positioning member opening 20.1 is provided on the front positioning member 20. The transmission shaft 10 is located in the second inner barrel cavity 40.3 and is rotatably set on the bearing 90. The front end of the transmission shaft 10 passes through the positioning member opening 20.1, and the rear end passes through the second opening 80.2 of the rear end cover.

[0038] In this embodiment, the front end of the transmission shaft 10 passes through the positioning piece opening 20.1 and can be driven and connected to the stirring blade mounted on the outer wall of the outer barrel 50. The rear end of the transmission shaft 10 passes through the second opening 80.2 of the rear end cover plate and can be driven and connected to the drive motor arranged at the rear end of the outer barrel 50.

[0039] In this embodiment, the positioning piece opening 20.1, the outer barrel front opening 50.4, the front cover plate opening 70.1, the second inner barrel cavity front opening 40.5, the outer barrel rear opening 50.1, the first inner barrel cavity rear opening 40.4, the second inner barrel cavity rear opening 40.6, and the rear cover plate second opening 80.2 are arranged on the same axis, thereby improving the coaxial matching stability between the components.

[0040] The above is a preferred embodiment of the present invention, which illustrates and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention, which is defined by the appended claims and their equivalents.

Claims

1. A pipe protection structure for a refrigeration evaporator, comprising an inner barrel (40) and an outer barrel (50), characterized in that: An air return pipe (60) is spirally wound around the outer wall of the inner barrel (40), the rear end of the air return pipe (60) extends toward the rear end of the inner barrel (40), and a throttle pipe (61) is welded to the front end of the air return pipe (60), the size of the throttle pipe (61) is smaller than the size of the air return pipe (60), and the inner barrel (40) is further provided with an inner barrel groove (40.7) and an inner barrel clamping groove (40.8), the welding position (A) of the air return pipe (60) and the throttle pipe (61) is located in the inner barrel groove (40.7), the throttle pipe (61) is bent and extended along the extension direction of the air return pipe (60), and its bending position (B) is located in the inner barrel clamping groove (40.8), and the outer barrel (50) is sleeved on the outer periphery of the inner barrel (40) and the air return pipe (60).

2. The pipe protection structure for a refrigeration evaporator according to claim 1, characterized in that: The air return pipe (60) is a copper pipe, and the throttling pipe (61) is an aluminum pipe.

3. The pipe protection structure for a refrigeration evaporator according to claim 1, characterized in that: An annular step (40.9) is recessed at the front end of the inner barrel (40), a front end cover plate (70) is fixedly mounted on the annular step (40.9), and an inner barrel groove (40.7) is formed between the front end cover plate (70) and the annular step (40.9). At least portions of the return air pipe (60) and the throttle pipe (61), as well as the welding position (A), are located within the inner barrel groove (40.7).

4. The pipe protection structure for a refrigeration evaporator according to claim 3, characterized in that: The inner barrel clamping slot (40.8) is recessed at the top of the annular step (40.9), and a bending positioning slot (71) is provided on the front end cover plate (70). The bending positioning slot (71) corresponds to the inner barrel clamping slot (40.8), and the bending position (B) is positioned within the bending positioning slot (71) and the inner barrel clamping slot (40.8).

5. The pipe protection structure for a refrigeration evaporator according to claim 4, characterized in that: A separation cylinder (40.1) is provided inside the inner barrel (40), and the separation cylinder (40.1) separates a first inner barrel cavity (40.2) and a second inner barrel cavity (40.3) that are independent of each other. The front end of the first inner barrel cavity (40.2) is sealed, and the rear end is provided with a first inner barrel cavity rear opening (40.4). The front end and rear end of the second inner barrel cavity (40.3) are respectively provided with a second inner barrel cavity front opening (40.5) and a second inner barrel cavity rear opening (40.6). The front end cover plate (70) is provided with a front end cover plate opening (70.1), and the front end cover plate opening (70.1) corresponds to the second inner barrel cavity front opening (40.5).

6. The pipe protection structure for a refrigeration evaporator according to claim 5, characterized in that: The rear end of the outer barrel (50) is provided with an outer barrel rear opening (50.1), and is sleeved on the outer periphery of the inner barrel (40) and the return air pipe (60) through the outer barrel rear opening (50.1). The rear end of the return air pipe (60) extends outward in the direction of the first inner barrel cavity rear opening (40.4) and the outer barrel rear opening (50.1), and is provided with a return air pipe inlet (60.1). The throttle pipe (61) is bent on the second inner barrel cavity front opening (40.5) and the front end cover plate opening (70.1), and extends outward in the direction of the second inner barrel cavity rear opening (40.6) and the outer barrel rear opening (50.1). The extended rear end of the throttle pipe (61) is provided with a throttle pipe outlet (61.1).

7. The pipe protection structure for a refrigeration evaporator according to claim 6, characterized in that: The rear end of the inner barrel (40) is provided with a rear end cover (80), and the rear end cover (80) is provided on the rear opening (40.6) of the second inner barrel cavity and the rear opening (50.1) of the outer barrel. The rear end cover (80) is provided with a first rear end cover opening (80.1) corresponding to the rear opening (40.4) of the first inner barrel cavity and a second rear end cover opening (80.2) corresponding to the rear opening (40.6) of the second inner barrel cavity. The first rear end cover opening (80.1) is located on one side of the second rear end cover opening (80.2).

8. The pipe protection structure for a refrigeration evaporator according to claim 7, characterized in that: The rear end cover plate (80) is further provided with a rear plate positioning groove (80.3), the rear plate positioning groove (80.3) being located on one side of the second opening (80.2) of the rear end cover plate; the rear end of the return air pipe (60) is positioned on the rear end cover plate (80), and the pipe section extending outward is bent and positioned on the rear plate positioning groove (80.3); the pipe section extending outward of the throttle pipe (61) passes through the second opening (80.2) of the rear end cover plate.

9. The pipe protection structure for a refrigeration evaporator according to claim 7, characterized in that: The front end of the outer barrel (50) is provided with an outer barrel front opening (50.4), a bearing (90) is provided on the outer barrel front opening (50.4), and a transmission shaft (10) is rotatably connected via the bearing (90).

10. The pipe protection structure for a refrigeration evaporator according to claim 9, characterized in that: The front opening (50.4) of the outer barrel is recessed in the direction of the rear opening (50.1) of the outer barrel and is provided with a front positioning member (20). The front positioning member (20) is positioned on the front opening (50.4) of the outer barrel and is connected to the bearing (90). The front positioning member (20) is provided with a positioning member opening (20.1). The transmission shaft (10) is located in the second inner barrel cavity (40.3) and is rotatably provided on the bearing (90). The front end of the transmission shaft (10) passes through the positioning member opening (20.1), and the rear end passes through the second opening (80.2) of the rear end cover plate.

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