A defrosting mechanism for an evaporator of a refrigerated cleaning machine

Abstract

The utility model discloses a kind of evaporator defrosting mechanisms for refrigeration cleaning machine, including two rectangular frame body fixed in the front of evaporator, the top surface of the top beam of the two rectangular frame body is fixed with same upper horizontal guide rail;The front wall surface of the bottom horizontal beam of the two rectangular frame body is fixed with lower horizontal guide rail;The middle part front wall surface of the upper horizontal guide rail is fixed with motor bracket, double-output-shaft driving motor is fixed on motor bracket, the middle part front wall surface of the top beam of two rectangular frame is fixed with connecting block;It can automatically blow hot air to the evaporation pipe and fin of evaporator, so that the frost or small ice block on its surface is melted, so as to ensure the normal flow of wind, the cold air of evaporator can be blown to food surface, and it is cooled, it is easy to operate, frost-removing effect is good, and it is unnecessary to stop for a long time.

Description

Technical Field

[0001] This utility model relates to the field of food processing technology, and more specifically to a defrosting mechanism for an evaporator in a freezer cleaning machine. Background Technology

[0002] In existing food freezing and cleaning machines, the surface of the cleaned food needs to be coated with water before freezing. Therefore, a refrigeration unit needs to be installed behind the cleaning equipment. The evaporator of the refrigeration unit blows cold air to freeze the food.

[0003] However, due to the decrease in temperature, the surface of the evaporator tubes is prone to frost formation, which affects the airflow over the evaporator tubes and the cooling effect. The existing method is to stop the machine after running for a certain period of time so that the frost on the evaporator surface can gradually melt away with the external temperature before it can be used again. Since the frost needs to melt away on its own, the downtime is long, which affects the processing efficiency and the effect is not ideal. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a defrosting mechanism for an evaporator in a freezer cleaning machine. It can automatically blow hot air onto the evaporator tubes and fins of the evaporator, melting the frost or small ice cubes on their surface, thereby ensuring normal airflow. It can also blow cold air from the evaporator onto the food surface to cool it. It is easy to operate, has a good defrosting effect, and does not require long-term shutdown.

[0005] The solution of this utility model to the aforementioned technical problem is:

[0006] A defrosting mechanism for an evaporator in a refrigeration cleaning machine includes two rectangular frame-type bodies fixed to the front of the evaporator, and the top surface of the top beam of the two rectangular frame-type bodies is fixed with the same upper transverse guide rail.

[0007] Lower transverse guide rails are fixed on the front wall of the bottom transverse beams of the two rectangular frame structures.

[0008] A motor frame is fixed to the front wall of the upper transverse guide rail. A dual-output shaft drive motor is fixed to the motor frame. Connecting blocks are fixed to the front wall of the top beams of the two rectangular frame bodies. Two moving screws are located on the left and right sides of the dual-output shaft drive motor. One end of the moving screw is movably connected to the corresponding connecting block through a bearing. The other end of the moving screw is connected to the corresponding output shaft of the dual-output shaft drive motor through a coupling. The moving block is screwed onto the corresponding moving screw. A vertical jet pipe is fixed on the moving block. An upper guide wheel is provided on the rear wall of the upper part of the vertical jet pipe. The upper guide wheel is installed on the upper transverse guide rail.

[0009] A second vertical jet pipe is provided on the outer side of the connecting block. A transverse connecting beam is fixed between the bottom of the second vertical jet pipe and the bottom of the adjacent vertical jet pipe. A lower guide wheel assembly is installed on the transverse connecting beam and is mounted on the corresponding lower transverse guide rail.

[0010] Multiple nozzles are fixed on the rear wall of the vertical jet pipe and the second vertical jet pipe, and the nozzles are connected to the corresponding vertical jet pipe or the second vertical jet pipe.

[0011] The outstanding effect of this utility model is:

[0012] It can automatically blow hot air onto the evaporator tubes and fins of the evaporator, melting the frost or small ice crystals on their surface, thus ensuring normal airflow. It can also blow cold air from the evaporator onto the food surface to cool it. It is easy to operate, has a good defrosting effect, and does not require long-term shutdown. Attached Figure Description

[0013] Figure 1 This is a partial structural schematic diagram of the present invention;

[0014] Figure 2 yes Figure 1 Enlarged view of a part

[0015] Figure 3 This is a partial side view of the present invention;

[0016] Figure 4 yes Figure 3 A magnified view of a portion of the image;

[0017] Figure 5 This is a partial top view of the present invention;

[0018] Figure 6 yes Figure 5 A magnified view of a portion of the image. Detailed Implementation

[0019] For example, see below. Figures 1 to 6 As shown, a defrosting mechanism for an evaporator in a refrigeration cleaning machine includes two rectangular frame-type frames 20 fixed to the front of the evaporator 10. The bottom surface of the rectangular frame-type frames 20 is fixed to the ground, and the top surface of the top beams of the two rectangular frame-type frames 20 is fixed with the same upper transverse guide rail 21.

[0020] The bottom transverse beams of the two rectangular frame bodies 20 are fixed with lower transverse guide rails 22.

[0021] A motor frame 23 is fixed to the front wall of the upper transverse guide rail 21. A dual-output shaft drive motor 24 is fixed to the motor frame 23. A connecting block 25 is fixed to the front wall of the top beam of the two rectangular frame bodies 20. Two moving screws 26 are located on the left and right sides of the dual-output shaft drive motor 24. One end of the moving screw 26 is movably connected to the corresponding connecting block 25 through a bearing. The other end of the moving screw 26 is connected to the corresponding output shaft of the dual-output shaft drive motor 24 through a coupling. A moving block 27 is screwed onto the corresponding moving screw 26. A vertical jet pipe 30 is fixed to one side wall of the moving block 27. An upper guide wheel 31 is movably connected to the rear wall of the upper part of the vertical jet pipe 30 through a hinge shaft. The upper guide wheel 31 is installed on the upper transverse guide rail 21.

[0022] A second vertical jet pipe 32 is provided on the outer side of the connecting block 25. A transverse connecting beam 33 is fixed between the bottom of the second vertical jet pipe 32 and the bottom of the adjacent vertical jet pipe 30. A lower guide wheel assembly 40 is installed on the transverse connecting beam 33, which is installed on the corresponding lower transverse guide rail 22.

[0023] Multiple nozzles 35 are fixed on the rear wall of the vertical jet pipe 30 and the second vertical jet pipe 32. The nozzles 35 are connected to the corresponding vertical jet pipe 30 or the second vertical jet pipe 32, and the outlet of the nozzles 35 faces the evaporator 10.

[0024] Furthermore, the upper transverse guide rail 21 has upwardly extending end limiting portions 211 formed at both ends of the top surface of the upper transverse guide rail 21, and two middle limiting portions 212 formed in the middle of the top surface of the upper transverse guide rail 21. An upper guide wheel 31 is provided between the middle limiting portion 212 and the adjacent end limiting portion 211. An annular groove is formed on the middle outer side wall of the upper guide wheel 31. The upper part of the upper transverse guide rail 21 is inserted into the lower part of the corresponding annular groove, and its top surface presses against the top surface of the lower part of the annular groove.

[0025] Furthermore, the upper part of both the vertical jet pipe 30 and the second vertical jet pipe 32 is formed with an upwardly extending upper air intake connecting pipe 36. A hinge shaft is fixed on the rear wall of the upper air intake connecting pipe 36, and an upper guide wheel 31 is movably connected to the hinge shaft through a bearing.

[0026] The upper air inlet connecting pipe 36 is connected to an external hot air inlet pipe, and the hot air in the hot air inlet pipe can be supplied by external equipment, such as external boilers. This structure is a conventional structure and will not be described in detail here.

[0027] Furthermore, bending connecting frames 37 are fixed on the left and right ends of the sidewall of the transverse connecting beam 33.

[0028] The lower guide wheel assembly 40 includes two connecting shafts. The upper parts of the two connecting shafts are fixed to the horizontal bending plate of the bending connecting frame 37. The two connecting shafts are arranged one in front of the other. The middle and lower parts of the connecting shafts extend out of the bottom surface of the horizontal bending plate of the bending connecting frame 37 and are movably connected to the lower guide wheel 41 through bearings. The upwardly extending transverse guide plate part 221 formed on the top surface of the front end of the lower transverse guide rail 22 is located between the two corresponding lower guide wheels 41 and close to the outer side wall of the corresponding lower guide wheel 41.

[0029] Furthermore, the nozzles 35 fixed on the rear wall of the vertical jet pipe 30 and the second vertical jet pipe 32 are arranged vertically, and the spacing between any two adjacent nozzles 35 in the vertical arrangement is equal.

[0030] In this embodiment, when defrosting the evaporator 10 is required, the compressor of the refrigeration system is first stopped. Then, the valve at the connecting pipe of the upper air inlet connecting pipe 36 is opened, and external hot air enters the vertical jet pipe 30 and the second vertical jet pipe 32. The hot air is blown from the jet nozzle 35 onto the evaporator 10 behind it, onto the heat exchange tubes and fins of the evaporator 10, melting the ice or frost on their surface. The dual-output shaft drive motor 24 is driven to move the vertical jet pipe 30 and the second vertical jet pipe 32 laterally, which can uniformly sweep the entire front wall of the evaporator 10 laterally, so that the heat exchange tubes and fins are heated evenly, and the ice or frost on their surface gradually melts. The melting effect is good and the melting is fast, so that the evaporator 10 can be used quickly and the downtime is short.

[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A defrosting mechanism for an evaporator in a refrigeration cleaning machine, comprising two rectangular frame-type frames (20) fixed to the front of the evaporator (10), characterized in that: The top surface of the top beam of the two rectangular frame frames (20) is fixed with the same upper transverse guide rail (21). The bottom transverse beams of the two rectangular frame frames (20) are fixed with lower transverse guide rails (22). A motor frame (23) is fixed on the front wall of the middle part of the upper transverse guide rail (21). A dual-output shaft drive motor (24) is fixed on the motor frame (23). A connecting block (25) is fixed on the front wall of the middle part of the top beam of the two rectangular frame bodies (20). Two moving screws (26) are located on the left and right sides of the dual-output shaft drive motor (24). One end of the moving screw (26) is movably connected to the corresponding connecting block (25) through a bearing. The other end of the moving screw (26) is connected to the corresponding output shaft of the dual-output shaft drive motor (24) through a coupling. A moving block (27) is screwed onto the corresponding moving screw (26). A vertical jet pipe (30) is fixed on one side wall of the moving block (27). An upper guide wheel (31) is movably connected to the rear wall of the upper part of the vertical jet pipe (30) through a hinge shaft. The upper guide wheel (31) is installed on the upper transverse guide rail (21). A second vertical jet pipe (32) is provided on the outside of the connecting block (25). A transverse connecting beam (33) is fixed between the bottom of the second vertical jet pipe (32) and the bottom of the adjacent vertical jet pipe (30). A lower guide wheel assembly (40) is installed on the transverse connecting beam (33), which is installed on the corresponding lower transverse guide rail (22). Multiple nozzles (35) are fixed on the rear wall of the vertical jet pipe (30) and the second vertical jet pipe (32). The nozzles (35) are connected to the corresponding vertical jet pipe (30) or the second vertical jet pipe (32), and the outlet of the nozzles (35) faces the evaporator (10).

2. The evaporator defrosting mechanism for a refrigerated cleaning machine according to claim 1, characterized in that: The upper transverse guide rail (21) has upwardly extending end limiting parts (211) formed at both ends of the top surface. The upper transverse guide rail (21) has two middle limiting parts (212) formed in the middle of the top surface. An upper guide wheel (31) is provided between the middle limiting part (212) and the adjacent end limiting part (211). An annular groove is formed on the middle outer side wall of the upper guide wheel (31). The upper part of the upper transverse guide rail (21) is inserted into the lower part of the corresponding annular groove, and its top surface is pressed against the top surface of the lower part of the annular groove.

3. The evaporator defrosting mechanism for a refrigerated cleaning machine according to claim 1, characterized in that: The upper part of both the vertical jet pipe (30) and the second vertical jet pipe (32) is formed with an upwardly extending upper air intake connecting pipe (36). A hinge shaft is fixed on the rear wall of the upper air intake connecting pipe (36), and an upper guide wheel (31) is movably connected to the hinge shaft through a bearing.

4. The evaporator defrosting mechanism for a refrigerated cleaning machine according to claim 1, characterized in that: A bending connecting frame (37) is fixed on the left and right ends of the side wall of the transverse connecting beam (33). The lower guide wheel assembly (40) includes two connecting shafts. The upper part of the two connecting shafts is fixed on the horizontal bending plate of the bending connecting frame (37). The two connecting shafts are arranged in front and behind. The middle and lower parts of the connecting shafts extend out of the bottom surface of the horizontal bending plate of the bending connecting frame (37) and are movably connected to the lower guide wheel (41) through the bearing. The upwardly extending transverse guide plate part (221) formed on the top surface of the front end of the lower transverse guide rail (22) is located between the two corresponding lower guide wheels (41) and close to the outer side wall of the corresponding lower guide wheel (41).

5. The evaporator defrosting mechanism for a refrigerated cleaning machine according to claim 1, characterized in that: The nozzles (35) fixed on the rear wall of the vertical jet pipe (30) and the second vertical jet pipe (32) are arranged vertically, and the spacing between any two adjacent nozzles (35) is equal.

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