Evaporator thermal insulation structure of snowflake machine

Abstract

The utility model discloses an evaporator thermal insulation structure of a snowflake machine, which belongs to the technical field of snowflake machines and comprises a barrel-shaped evaporator main body, one end of the evaporator main body is provided with a first rotating shaft, the other end of the evaporator main body is open, and a fixed cover is provided with an end cover which is provided with a second rotating shaft. A first thermal insulation plate and a second thermal insulation plate are arranged at the two ends of an inner cavity of the evaporator body respectively. According to the structure, the temperature isolation function of the first thermal insulation plate and the second thermal insulation plate is utilized to block heat transfer between a high-pressure refrigerant and the two ends of the evaporator body, so that the high-pressure refrigerant can only complete heat transfer with the arc-shaped side face of the evaporator body, and liquid can only frost on the arc-shaped side face of the evaporator body; due to the fact that the high-pressure refrigerant cannot conduct heat transfer with the two ends of the evaporator body, the defect that liquid is frosted at the two ends of the evaporator body can be effectively overcome, cooling capacity waste is reduced, it can be guaranteed that the evaporator body can rotate stably, and practicability is high.

Description

Technical Field

[0001] This utility model relates to the field of snow machine technology, specifically to a heat insulation structure for the evaporator of a snow machine. Background Technology

[0002] Chinese utility model patent CN202321108723.4 discloses a sealed rotary evaporator for a snow ice machine. During operation, high-pressure refrigerant fills the inner cavity of the evaporator cylinder through the liquid outlet, achieving heat exchange and generating cooling. The high-pressure refrigerant then flows out of the evaporator cylinder through the return pipe. When the cooling evaporator cylinder comes into contact with the liquid, frost forms on the liquid surface. A scraper removes the frost, thus creating snowflakes. However, when the high-pressure refrigerant fills the inner cavity of the evaporator cylinder, the entire cylinder generates cooling, causing frost to form on its surface. While the scraper can remove frost from the curved surface of the evaporator cylinder, it cannot remove frost from the vertical end face. Over time, the frost on the vertical end face accumulates and solidifies into ice, wasting cooling energy, becoming difficult to clean, and increasing the weight of the evaporator, making rotation difficult. In severe cases, it may even fail to rotate or fall and break due to excessive weight. Therefore, further improvement is necessary. Utility Model Content

[0003] The present invention aims to provide an evaporator insulation structure for a snow machine to overcome the shortcomings of the prior art.

[0004] An evaporator insulation structure for a snow machine designed for this purpose includes an evaporator body, which is cylindrical in shape. One end of the evaporator body is provided with a first rotating shaft, and the other end is open and fixedly covered with an end cap. A second rotating shaft is provided on the end cap. A first insulation plate and a second insulation plate are respectively provided at both ends of the inner cavity of the evaporator body.

[0005] The first insulation plate rests against one end of the inner cavity of the evaporator body, and the second insulation plate is located inside the evaporator body and rests against the end cover.

[0006] The first insulation plate and the second insulation plate are respectively attached to or spaced apart from each other with the arc-shaped side of the evaporator body.

[0007] The first rotating shaft is provided with a connection hole communicating with the inner cavity of the evaporator body. A connecting pipe is sealed to the connection hole. The connecting pipe extends into the evaporator body and is connected to a return pipe and an input pipe. The inner end of the return pipe is provided with a refrigerant outlet facing the second insulation plate. The inner end of the input pipe is provided with a refrigerant inlet facing the arc-shaped side of the evaporator body.

[0008] The first insulation plate is provided with clearance holes, which correspond to the connecting holes, and the connecting pipe passes through the clearance holes.

[0009] A connecting hole positioning step is provided inside the connecting hole, and a connecting pipe positioning step is provided around the connecting pipe. A connecting seal is provided between the connecting hole positioning step and the connecting pipe positioning step, and the two are sealed together by the connecting seal.

[0010] A connecting bearing is positioned on the connecting pipe, and the connecting bearing is located outside the positioning step of the connecting pipe. The connecting pipe is rotatably connected to the connecting hole through the connecting bearing.

[0011] The structure also includes a frame, a first bearing is positioned on the first rotating shaft and rotates on the frame via the first bearing, and a second bearing is positioned on the second rotating shaft and rotates on the frame via the second bearing.

[0012] A first sealing element is also positioned on the first rotating shaft, and a second sealing element is also positioned on the second rotating shaft. The first rotating shaft and the second rotating shaft are respectively sealed and fitted with the frame through the first sealing element and the second sealing element.

[0013] The first or second rotating shaft has a threaded portion on its periphery, and a threaded fastener is connected through the threaded portion.

[0014] This invention, through structural improvements, provides a first insulation plate and a second insulation plate at both ends of the evaporator body's inner cavity. Utilizing the temperature isolation function of these plates, heat transfer between the high-pressure refrigerant and the two ends of the evaporator body is prevented. This ensures that the high-pressure refrigerant can only transfer heat to the curved sides of the evaporator body, and the liquid can only frost on these curved sides. Since the high-pressure refrigerant cannot transfer heat to the two ends of the evaporator body, the drawback of frost formation on both ends is effectively avoided. This not only reduces cooling waste but also ensures stable rotation of the evaporator body, making it highly practical. Attached Figure Description

[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 invention.

[0018] Figure 4This is an exploded structural diagram of an embodiment of the present invention.

[0019] Figure 5 This is an exploded structural diagram from another perspective of an embodiment of the present invention.

[0020] Figure 6 This is an exploded structural diagram of the evaporator body, end cap, first insulation plate, and second insulation plate according to an embodiment of the present invention. Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model 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 Figures 1-6 The evaporator insulation structure of this snowflake machine includes an evaporator body 2, which is cylindrical in shape. One end of the evaporator body 2 is provided with a first rotating shaft 3, and the other end is open and fixedly covered with an end cap 30. A second rotating shaft 4 is provided on the end cap 30. A first insulation plate 31 and a second insulation plate 32 are respectively provided at both ends of the inner cavity of the evaporator body 2.

[0024] In this embodiment, a first insulation plate 31 and a second insulation plate 32 are respectively provided at both ends of the inner cavity of the evaporator body 2. The temperature isolation function of the first insulation plate 31 and the second insulation plate 32 is used to block the high-pressure refrigerant from heat transfer to both ends of the evaporator body 2. This ensures that the high-pressure refrigerant can only complete heat transfer with the arc-shaped side of the evaporator body 2, and the liquid can only frost on the arc-shaped side of the evaporator body 2. Since the high-pressure refrigerant cannot transfer heat to both ends of the evaporator body 2, the drawback of the liquid frosting at both ends of the evaporator body 2 can be effectively avoided. This not only reduces the waste of cooling capacity, but also ensures that the evaporator body 2 can rotate stably, making it highly practical.

[0025] The first insulation plate 31 rests against one end of the inner cavity of the evaporator body 2, and the second insulation plate 32 is located inside the evaporator body 2 and rests against the end cover 30.

[0026] The first insulation plate 31 and the second insulation plate 32 are respectively attached to or spaced apart from each other on the arc-shaped side of the evaporator body 2.

[0027] In this embodiment, the outer periphery of the first insulation plate 31 relies on the arc-shaped side of the evaporator body 2, and the outer periphery of the second insulation plate 32 also relies on the arc-shaped side of the evaporator body 2. By utilizing the reliance between the first insulation plate 31 and one end of the inner cavity of the evaporator body 2, and the reliance between the second insulation plate 32 and the inner side of the end cap 30, the cold energy of the high-pressure refrigerant is effectively blocked from being transferred to both ends of the evaporator body 2, so as to ensure that the high-pressure refrigerant can only complete the heat transfer with the arc-shaped side of the evaporator body 2.

[0028] The first rotating shaft 3 is provided with a connecting hole 5 that communicates with the inner cavity of the evaporator body 2. A connecting pipe 6 is sealed and connected to the connecting hole 5. The connecting pipe 6 extends into the evaporator body 2 and is connected to a return pipe 7 and an input pipe 8. The inner end of the return pipe 7 is provided with a refrigerant outlet 9 and faces the second insulation plate 32. The inner end of the input pipe 8 is provided with a refrigerant inlet 10 and faces the arc-shaped side of the evaporator body 2.

[0029] In this embodiment, the connecting pipe 6 is sealed to the return pipe 7 and the input pipe 8 respectively. Therefore, only one sealing element needs to be set between the connecting hole 5 and the connecting pipe 6 to achieve the sealing problem between the connecting hole 5 and the connecting pipe 6, the return pipe 7, and the input pipe 8. This reduces the requirements for sealing processing and assembly, simplifies the overall structure of the evaporator, reduces production costs, and the evaporator with the simplified structure has a longer service life and better practicality.

[0030] The end wall of the connecting pipe 6 located inside the evaporator body 2 is provided with an opening groove 11. The inner end of the input pipe 8 is bent on the opening groove 11, and the refrigerant inlet 10 faces the arc-shaped side of the evaporator body 2 through the opening groove 11.

[0031] The first insulation plate 31 is provided with a clearance hole 33, which corresponds to the connection hole 5, and the connection pipe 6 passes through the clearance hole 33.

[0032] The outer ends of the return pipe 7 and the input pipe 8 pass through the outer end of the connecting pipe 6, respectively, and the inner end of the return pipe 7 passes through the inner end of the connecting pipe 6.

[0033] In this embodiment, during assembly, the return air pipe 7 is inserted through the connecting pipe 6, and the input pipe 8 is inserted into the connecting pipe 6 along the direction of the opening groove 11 and relies on the return air pipe 7. The inner curved section of the input pipe 8 is positioned on the opening groove 11. After assembly, the connecting pipe 6 forms a mutually sealed and relied-on state with the return air pipe 7 and the input pipe 8 respectively. In addition, during assembly, the connecting pipe 6 passes through the clearance hole 33 and is inserted into the connecting hole 5.

[0034] A connecting hole positioning step 12 is provided inside the connecting hole 5, and a connecting pipe positioning step 13 is provided around the connecting pipe 6. A connecting seal 14 is provided between the connecting hole positioning step 12 and the connecting pipe positioning step 13, and the two are sealed together by the connecting seal 14.

[0035] In this embodiment, the connecting seal 14 is a sealing ring, which is positioned and sleeved on the connecting pipe 6. One side of the connecting seal 14 acts as a seal on the positioning step 12 of the connecting hole, and the other side acts as a seal on the positioning step 13 of the connecting pipe, thereby achieving a sealing fit between the connecting pipe 6 and the connecting hole 5.

[0036] The connecting pipe 6 is also provided with an annular edge 15, which cooperates with the connecting hole 5. The annular edge 15 is located behind the connecting pipe positioning step 13 and close to the evaporator body 2. That is, the connecting pipe positioning step 13 and the annular edge 15 cooperate with each other in the front and rear positions, respectively, so that the connecting pipe 6 and the connecting hole 5 are positioned at at least two different positions, thereby ensuring that the connecting pipe 6 and the evaporator body 2 are always on the same axis.

[0037] A connecting bearing 16 is positioned on the connecting pipe 6. The connecting bearing 16 is located outside the positioning step 13 of the connecting pipe. The connecting pipe 6 is rotatably connected to the connecting hole 5 through the connecting bearing 16, so that when the evaporator body 2 rotates on the frame 1, it can also rotate relative to the connecting pipe 6.

[0038] This embodiment also includes a frame 1, a first bearing 21 is positioned on the first rotating shaft 3 and rotates on the frame 1 through the first bearing 21, and a second bearing 22 is positioned on the second rotating shaft 4 and rotates on the frame 1 through the second bearing 22.

[0039] Specifically, the frame 1 is provided with a first receiving part 17 and a second receiving part 18. The first receiving part 17 and the second receiving part 18 are respectively fixed with a first fixing frame 19 and a second fixing frame 20 by fasteners. The first receiving part 17 and the second receiving part 18 are respectively semi-circular. The first fixing frame 19 and the second fixing frame 20 are respectively provided with semi-circular mating parts. When the first fixing frame 19 and the second fixing frame 20 are assembled, circular receiving positions are formed between the first fixing frame 19 and the first receiving part 17, and between the second fixing frame 20 and the second receiving part 18. The first rotating shaft 3 is rotatably supported between the first receiving part 17 and the first fixing frame 19 through the first bearing 21, and the second rotating shaft 4 is rotatably supported between the second receiving part 18 and the second fixing frame 20 through the second bearing 22. In this way, the evaporator body 2 can rotate on the frame 1, and the rotational stability of the evaporator body 2 can be improved.

[0040] In addition, during assembly, the evaporator body 2 can be supported on the first receiving part 17 and the second receiving part 18 respectively by the first rotating shaft 3 and the second rotating shaft 4, and then the first fixing frame 19 and the second fixing frame 20 can be fixed on the first receiving part 17 and the second receiving part 18 respectively, thus realizing the assembly of the evaporator body 2. The structure is simple and the assembly is convenient.

[0041] A first seal 23 is positioned on the first rotating shaft 3, and a second seal 24 is positioned on the second rotating shaft 4. The first rotating shaft 3 and the second rotating shaft 4 are respectively sealed to the frame 1 through the first seal 23 and the second seal 24.

[0042] In this embodiment, the first sealing element 23 and the second sealing element 24 are annular sealing elements, and their cross sections are U-shaped. The first sealing element 23 is U-shaped and is fixed on the first fixing frame 19 and the first receiving part 17. The side of the first sealing element 23 is sealed and fitted with the first bearing 21. The second sealing element 24 is U-shaped and is fixed on the second fixing frame 20 and the second receiving part 18. The side of the second sealing element 24 is sealed and fitted with the second bearing 22, thereby ensuring the rotational sealing fit between the evaporator body 2 and the frame 1.

[0043] The first rotating shaft 3 or the second rotating shaft 4 has a threaded part 25 on its periphery, and a threaded fastener 26 is connected through the threaded part 25.

[0044] In this embodiment, the threaded part 25 is disposed around the first rotating shaft 3, and the threaded fastener 26 is threadedly connected to the threaded part 25 and fastens on the connecting bearing 16, thereby fixing the connecting bearing 16 and ensuring the stable assembly of the evaporator body 2.

[0045] The above describes the preferred embodiments of this utility model, illustrating and describing its basic principles, main features, and advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. An evaporator insulation structure for a snowflake machine, comprising an evaporator body (2), characterized in that: The evaporator body (2) is cylindrical, with a first rotating shaft (3) at one end and an open end covered with an end cap (30) at the other end. A second rotating shaft (4) is provided on the end cap (30). A first insulation plate (31) and a second insulation plate (32) are respectively provided at both ends of the inner cavity of the evaporator body (2).

2. The evaporator insulation structure of the snowflake machine according to claim 1, characterized in that: The first insulation plate (31) rests against one end of the inner cavity of the evaporator body (2), and the second insulation plate (32) is located inside the evaporator body (2) and rests against the end cap (30).

3. The evaporator insulation structure of the snowflake machine according to claim 1, characterized in that: The first insulation plate (31) and the second insulation plate (32) respectively rely on or are spaced apart from each other on the arc-shaped side of the evaporator body (2).

4. The evaporator insulation structure of the snowflake machine according to claim 1, characterized in that: The first rotating shaft (3) is provided with a connecting hole (5) communicating with the inner cavity of the evaporator body (2). A connecting pipe (6) is sealed and connected to the connecting hole (5). The connecting pipe (6) extends into the evaporator body (2) and is connected to a return pipe (7) and an input pipe (8). The inner end of the return pipe (7) is provided with a refrigerant outlet (9) facing the second insulation plate (32). The inner end of the input pipe (8) is provided with a refrigerant inlet (10) facing the arc-shaped side of the evaporator body (2).

5. The evaporator insulation structure of the snowflake machine according to claim 4, characterized in that: The first insulation plate (31) is provided with a clearance hole (33), the clearance hole (33) corresponds to the connection hole (5), and the connection pipe (6) passes through the clearance hole (33).

6. The evaporator insulation structure of the snowflake machine according to claim 4, characterized in that: A connecting hole positioning step (12) is provided inside the connecting hole (5), and a connecting pipe positioning step (13) is provided around the connecting pipe (6). A connecting seal (14) is provided between the connecting hole positioning step (12) and the connecting pipe positioning step (13), and the two are sealed together by the connecting seal (14).

7. The evaporator insulation structure of the snowflake machine according to claim 4, characterized in that: A connecting bearing (16) is positioned on the connecting pipe (6). The connecting bearing (16) is located outside the positioning step (13) of the connecting pipe. The connecting pipe (6) is rotatably connected to the connecting hole (5) through the connecting bearing (16).

8. The evaporator insulation structure of the snowflake machine according to claim 1, characterized in that: It also includes a frame (1), on which a first bearing (21) is positioned and rotates on the frame (1) via the first bearing (21), and on which a second bearing (22) is positioned and rotates on the frame (1) via the second bearing (22).

9. The evaporator insulation structure of the snowflake machine according to claim 8, characterized in that: A first seal (23) is also positioned on the first rotating shaft (3), and a second seal (24) is also positioned on the second rotating shaft (4). The first rotating shaft (3) and the second rotating shaft (4) are respectively sealed to the frame (1) through the first seal (23) and the second seal (24).

10. The evaporator insulation structure of the snowflake machine according to claim 8, characterized in that: The first rotating shaft (3) or the second rotating shaft (4) is provided with a threaded part (25) on its periphery, and a threaded fastener (26) is connected through the threaded part (25).

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