An evaporator and ice cream machine

Abstract

The utility model relates to ice cream machine technical field, especially an evaporimeter and ice cream machine, including inner tube, the inner tube in the shape has the food material accommodation cavity for accommodating food material, and food material accommodation cavity first end is equipped with food material feedway, and food material accommodation cavity second end is equipped with food material discharge gate, outer tube, the outer tube is fixed on the outer wall of inner tube, and the outer wall between outer tube and inner tube forms the refrigerant flow guide chamber, and the refrigerant flow guide chamber first end is equipped with the refrigerant discharge pipe, and the refrigerant flow guide chamber second end is equipped with the refrigerant feed pipe, the refrigerant flow guide chamber is tubular structure and is covered on the outer wall of food material accommodation cavity. Set up like this, through the refrigerant flow guide chamber of tubular structure setting between the outer wall of outer tube and inner tube, its structure is simple, and cost is not high, and the refrigerant flow guide chamber is tubular structure and is covered on the outer wall of food material accommodation cavity, and the refrigerant flow guide chamber and food material accommodation cavity contact area are big, and further make heat exchange performance better.

Description

Technical Field

[0001] This utility model relates to the field of ice cream machine technology, specifically to an evaporator and an ice cream machine. Background Technology

[0002] An ice cream machine is an appliance used to make ice cream. The refrigeration system of an ice cream machine uses a compressor to compress refrigerant and drive it to circulate in the refrigeration system pipes to freeze the ice cream mixture. In the refrigeration system, the evaporator is a key component for heat exchange, and its structure typically includes wound-tube evaporators, finned evaporators, and internal / external spiral evaporators. Among them, the spiral copper tube evaporator is made by winding a spiral copper tube around the outside of the mixing cylinder. For example, the utility model patent with patent publication number CN210718225U discloses a tubular evaporator for ice cream. This prior art has a complex structure, high manufacturing cost, and small contact area between the copper tube and the mixing cylinder, resulting in poor heat exchange performance. Among them, the finned evaporator is made by welding fins in a spiral distribution on the outside of the mixing cylinder. For example, the utility model patent with patent publication number CN215864155U discloses an evaporator for an ice cream machine. This prior art has a complex structure, high manufacturing cost, and small contact area between the spiral channel and the mixing cylinder, resulting in poor heat exchange performance. Among them, the inner and outer spiral evaporator adopts a double-layer cylindrical structure, with spiral grooves or spiral components set between the inner sleeve and the outer sleeve. For example, the utility model patent with patent publication number CN203798029U discloses an evaporator and an ice cream machine. This prior art has a complex structure, high manufacturing cost, and small contact area between the spiral component and the stirring cylinder, resulting in poor heat exchange performance.

[0003] Therefore, there is still room for improvement and development in existing technologies. Utility Model Content

[0004] To address the problems of existing technologies, this utility model proposes an evaporator and an ice cream machine. By setting a refrigerant guide cavity with a tubular structure between the inner wall of the outer cylinder and the outer wall of the inner cylinder, the structure is simple and the cost is low. Moreover, the refrigerant guide cavity is tubular and covers the outer wall of the food container cavity, resulting in a large contact area between the refrigerant guide cavity and the food container cavity, thus improving the heat exchange performance.

[0005] To achieve the above objectives, the technical solution applied in this utility model is as follows: An evaporator includes an inner cylinder with a food receiving cavity formed therein for holding food. The food receiving cavity has a food inlet at a first end and a food outlet at a second end. An outer cylinder is fixed to the outer wall of the inner cylinder. A refrigerant guiding cavity is formed between the inner wall of the outer cylinder and the outer wall of the inner cylinder. The refrigerant guiding cavity has a refrigerant outlet at a first end and a refrigerant inlet at a second end. The refrigerant guiding cavity has a tubular structure that covers the outer wall of the food receiving cavity.

[0006] According to the above scheme, a smooth circular tube segment 1 is formed on the inner wall of the outer cylinder, and a smooth circular tube segment 2 is formed on the outer wall of the inner cylinder. The refrigerant guide cavity is in the shape of a circular tube and is located between the circular tube segment 1 and the circular tube segment 2.

[0007] According to the above scheme, the length of the first circular pipe segment is less than or equal to the length of the second circular pipe segment, and the two ends of the first circular pipe segment are formed with gradually decreasing circular openings, which are sealed and welded to the outer wall of the second circular pipe segment.

[0008] According to the above scheme, the refrigerant inlet pipe is located at the bottom of the outer cylinder near the food outlet; the refrigerant outlet pipe is located at the top of the outer cylinder near the food inlet.

[0009] According to the above scheme, the food inlet is located at the top of the first end of the inner cylinder, and the food outlet is located on the second end face of the inner cylinder; a sealing plate is formed on the first end face of the inner cylinder, and a through hole for assembling a stirring device is formed in the center of the sealing plate, and the through hole is coaxial with the axis of the inner cylinder.

[0010] According to the above scheme, the axis of the first circular pipe section is coaxial with the axis of the second circular pipe section, and the distance between the inner wall of the first circular pipe section and the outer wall of the second circular pipe section is 2mm.

[0011] According to the above scheme, the outer cylinder is a circular tube structure with an inner diameter of 93mm and an outer diameter of 95mm.

[0012] According to the above scheme, the inner cylinder is a circular tube structure with an outer diameter of 89mm.

[0013] According to the above scheme, the inner diameter of the circular opening is 89mm.

[0014] The present invention relates to an ice cream machine, wherein the ice cream machine is equipped with the aforementioned evaporator.

[0015] The beneficial effects of this utility model are: This invention features a refrigerant guide cavity with a tubular structure between the inner wall of the outer cylinder and the outer wall of the inner cylinder. This design is simple and inexpensive. Furthermore, the tubular structure of the refrigerant guide cavity covers the outer wall of the food container cavity, resulting in a large contact area between the refrigerant guide cavity and the food container cavity, thus improving heat exchange performance. Attached Figure Description

[0016] Figure 1 This is a front view of the overall structure of this utility model; Figure 2 This is a rear view of the overall structure of this utility model; Figure 3 This is a cross-sectional view of the overall structure of this utility model; Figure 4 This is a sectional view of the outer cylinder of this utility model; Figure 5 This is a schematic diagram of the inner cylinder of the lamp holder of this utility model.

[0017] In the picture: 1. Inner cylinder; 11. Food inlet; 12. Food outlet; 13. Through hole; 14. Circular tube section two; 2. Outer cylinder; 21. Circular constriction section; 22. Circular tube section one; 3. Refrigerant guide cavity; 31. Refrigerant inlet pipe; 32. Refrigerant outlet pipe. Detailed Implementation

[0018] The technical solution of this utility model will be described below with reference to the accompanying drawings and embodiments.

[0019] like Figures 1 to 5 As shown, the evaporator of this utility model includes an inner cylinder 1, in which a food receiving cavity for holding food is formed. The first end of the food receiving cavity is provided with a food inlet 11, and the second end of the food receiving cavity is provided with a food outlet 12. An outer cylinder 2 is fixed to the outer wall of the inner cylinder 1. A refrigerant guiding cavity 3 is formed between the inner wall of the outer cylinder 2 and the outer wall of the inner cylinder 1. The first end of the refrigerant guiding cavity 3 is provided with a refrigerant outlet pipe 32, and the second end of the refrigerant guiding cavity 3 is provided with a refrigerant inlet pipe 31. The refrigerant guiding cavity 3 has a tubular structure covering the outer wall of the food receiving cavity. This configuration, with a refrigerant guide cavity 3 arranged in a tubular structure between the inner wall of the outer cylinder 2 and the outer wall of the inner cylinder 1, and the refrigerant guide cavity 3 covering the outer wall of the food container cavity in a tubular structure, has a simpler structure and lower overall manufacturing cost compared to the existing technologies that use coiled tube evaporators, finned evaporators and inner and outer spiral evaporators. In addition, the refrigerant guide cavity 3 has a large contact area with the food container cavity, which results in better heat exchange performance.

[0020] Furthermore, the inner wall of the outer cylinder 2 is formed with a smooth circular tube segment 22, and the outer wall of the inner cylinder 1 is formed with a smooth circular tube segment 14. The refrigerant guide cavity 3 is located in a circular tube shape between the first circular tube segment 22 and the second circular tube segment 14. This arrangement ensures that the refrigerant flow rate is uniform within the refrigerant guide cavity 3, thereby resulting in more uniform heat exchange. Moreover, the outer cylinder 2 and the inner cylinder 1 have simple structures and low manufacturing costs.

[0021] Furthermore, the length of the first circular tube segment 22 is less than or equal to the length of the second circular tube segment 14. Both ends of the first circular tube segment 22 are formed with gradually tapering circular openings 21, which are sealed and welded to the outer wall of the second circular tube segment 14. This design, compared to the prior art which uses sealing elements (the outer edge of the sealing element is sealed and welded to the outer cylinder 2, and the inner hole of the sealing element is sealed and welded to the inner cylinder 1), saves on parts costs and manual spot welding costs, and provides a more reliable sealing effect. Specifically, the prior art requires two welds, one inside and one outside, while this invention requires only one weld and does not require a sealing element.

[0022] Furthermore, the refrigerant inlet pipe 31 is located at the bottom of the outer cylinder 2 near the food outlet 12; the refrigerant outlet pipe 32 is located at the top of the outer cylinder 2 near the food inlet 11. This arrangement, with the refrigerant inlet pipe 31 at the bottom of the outer cylinder 2 and the refrigerant outlet pipe 32 at the top, allows the refrigerant to be compressed by the compressor and circulated along the refrigerant guide cavity 3 from the bottom of one end to the top of the other. This ensures the refrigerant completely fills the refrigerant guide cavity 3, thereby completely enveloping the food container cavity and improving heat exchange performance.

[0023] Furthermore, the food inlet 11 is located at the top of the first end of the inner cylinder 1, and the food outlet 12 is located on the second end face of the inner cylinder 1. A sealing plate is formed on the first end face of the inner cylinder 1, and a through hole 13 for assembling a stirring device is formed in the center of the sealing plate. The through hole 13 is coaxially arranged with the axis of the inner cylinder 1. This arrangement, with the food outlet 12 located at the top of the inner cylinder 1, makes food feeding more convenient; and the coaxial arrangement of the through hole 13 with the axis of the inner cylinder 1 ensures a more uniform and thorough stirring effect when the stirring device is in operation.

[0024] Furthermore, the axis of the first circular tube segment 22 is coaxial with the axis of the second circular tube segment 14, and the distance between the inner wall of the first circular tube segment 22 and the outer wall of the second circular tube segment 14 is 2mm; the outer cylinder 2 is a circular tube structure with an inner diameter of 93mm and an outer diameter of 95mm; the inner cylinder 1 is a circular tube structure with an outer diameter of 89mm; and the inner diameter of the circular constriction portion 21 is 89mm. This arrangement results in a smaller overall volume of the evaporator and a smaller footprint.

[0025] The present invention relates to an ice cream machine, wherein the ice cream machine is equipped with the aforementioned evaporator.

[0026] The embodiments of the present utility model have been described above with reference to the accompanying drawings. However, the present utility model is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present utility model without departing from the spirit and scope of the claims. All of these forms are within the scope of protection of the present utility model.

Claims

1. An evaporator, characterized in that, include: The inner cylinder (1) has a food storage cavity formed inside for storing food ingredients. The first end of the food storage cavity is provided with a food inlet (11), and the second end of the food storage cavity is provided with a food outlet (12). Outer cylinder (2), the outer cylinder (2) is fixed on the outer wall of the inner cylinder (1), a refrigerant guide cavity (3) is formed between the inner wall of the outer cylinder (2) and the outer wall of the inner cylinder (1), the first end of the refrigerant guide cavity (3) is provided with a refrigerant outlet pipe (32), and the second end of the refrigerant guide cavity (3) is provided with a refrigerant inlet pipe (31). The refrigerant guide cavity (3) is a tubular structure that covers the outer wall of the food container cavity.

2. An evaporator according to claim 1, characterized in that: The inner wall of the outer cylinder (2) is formed with a smooth circular tube segment 1 (22), and the outer wall of the inner cylinder (1) is formed with a smooth circular tube segment 2 (14). The refrigerant guide cavity (3) is in the shape of a circular tube and is located between the circular tube segment 1 (22) and the circular tube segment 2 (14).

3. An evaporator according to claim 2, characterized in that: The length of the first circular tube segment (22) is less than or equal to the length of the second circular tube segment (14). The two ends of the first circular tube segment (22) are formed with gradually decreasing circular openings (21), and the circular openings (21) are sealed and welded to the outer wall of the second circular tube segment (14).

4. An evaporator according to claim 1, characterized in that: The refrigerant inlet pipe (31) is located at the bottom of the outer cylinder (2) near the food outlet (12); the refrigerant outlet pipe (32) is located at the top of the outer cylinder (2) near the food inlet (11).

5. An evaporator according to claim 1, characterized in that: The food inlet (11) is located on the top of the first end of the inner cylinder (1), and the food outlet (12) is located on the second end face of the inner cylinder (1). A sealing plate is formed on the first end face of the inner cylinder (1), and a through hole (13) for assembling a stirring device is formed in the center of the sealing plate. The through hole (13) is coaxial with the axis of the inner cylinder (1).

6. An evaporator according to claim 2, characterized in that: The axis of the first circular tube segment (22) is coaxial with the axis of the second circular tube segment (14), and the distance between the inner wall of the first circular tube segment (22) and the outer wall of the second circular tube segment (14) is 2mm.

7. An evaporator according to claim 1, characterized in that: The outer cylinder (2) is a circular tube structure. The inner diameter of the outer cylinder (2) is 93 mm, and the outer diameter of the outer cylinder (2) is 95 mm.

8. An evaporator according to claim 1, characterized in that: The inner cylinder (1) is a circular tube structure, and the outer diameter of the inner cylinder (1) is 89mm.

9. An evaporator according to claim 3, characterized in that: The inner diameter of the circular opening (21) is 89 mm.

10. An ice cream machine, characterized in that: The ice cream machine is equipped with an evaporator as described in any one of claims 1-9.

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