Noise-eliminating ice-making evaporator

Abstract

The utility model discloses an ice making evaporator that eliminates noise, a first end cover is fixed to one end of a cylinder body, a second end cover is fixed to the other end of the cylinder body, an ice outlet is provided on the second end cover, at least a part of a spiral ice scraping mechanism is located in the cylinder body, one end of the spiral ice scraping mechanism cooperates with the first end cover, the other end of the spiral ice scraping mechanism cooperates with the second end cover, a part of a sealing assembly is sleeved on the spiral ice scraping mechanism and fixed with the spiral ice scraping mechanism, the other part of the sealing assembly cooperates with the first end cover, mounting holes are provided on the circumferential surface of the cylinder body, a water pipe cooperates with the mounting holes on the cylinder body, an evaporation assembly is sleeved on the cylinder body and fixed with the cylinder body, a protective sleeve surrounds the sealing assembly, and the protective sleeve cooperates with the cylinder body and / or the first end cover. The utility model eliminates the noise generated between the spiral ice scraping mechanism and the sealing assembly when freezing the cylinder.

Description

Technical Field

[0001] This utility model relates to the field of ice-making technology, specifically to an ice-making evaporator that eliminates noise. Background Technology

[0002] The evaporator of an ice maker is a core component of the ice maker. An earlier application by the applicant (publication number CN223191893U) describes an ice evaporator comprising a lower support, a cylinder, a spiral ice scraping mechanism, an upper support, an input pipe, a refrigeration unit, and a sealing assembly. One end of the cylinder is fixed to the lower support, and the other end is fixed to the upper support. A portion of the spiral ice scraping mechanism is located within the cylinder. One end of the spiral ice scraping mechanism is rotatably engaged with the lower support, and the other end is rotatably engaged with the upper support. The upper support has an ice outlet. The input pipe is connected to the cylinder. A scraper is spirally wound around a blade shaft. The refrigeration unit is located on the outer circumferential surface of the cylinder. The sealing assembly includes a first sealing sleeve, a second sealing sleeve, a spring, a first wear-resistant component, and a second wear-resistant component. The first sealing sleeve is fitted onto one end of the spiral ice scraping mechanism and fixed to it. The second sealing sleeve is fixed to the lower support. One end of the spiral ice scraping mechanism is in clearance fit with the second sealing sleeve. The spring is fitted onto the first sealing sleeve, and the tension generated by the spring keeps the axial end faces of the first and second sealing sleeves in contact. The first wear-resistant component is fixed to the first sealing sleeve, and the second wear-resistant component is fixed to the second sealing sleeve. The axial end faces of the first wear-resistant component and the second wear-resistant component are in contact.

[0003] For the ice-making evaporator with the above structure, since the inlet pipe is installed at the bottom of the cylinder and the corrugated pipe is sleeved on the cylinder, when the ice-making evaporator is working, water enters the bottom of the cylinder through the inlet pipe. The refrigerant located between the corrugated pipe and the cylinder exchanges heat with the water, causing the water to turn into ice. The rotating spiral ice scraping mechanism scrapes off the ice condensed on the inner wall of the cylinder and pushes it from bottom to top. The first sealing sleeve, which is fixed to the spiral ice scraping mechanism, rotates with the rotation of the spiral ice scraping mechanism.

[0004] According to user feedback, when water enters the cylinder, the entire sealing assembly is forced to be submerged in water. After the water and refrigerant exchange heat, occasional freezing occurs (i.e., no ice comes out of the ice outlet, and all the water between the sealing assembly and the cylinder turns into ice). Once freezing occurs, the first sealing sleeve will freeze, causing it to be unable to rotate with the spiral ice scraping mechanism. Relative movement occurs between the spiral ice scraping mechanism and the first sealing sleeve, resulting in friction between them. This causes noise during product operation, thereby reducing users' trust in the product's quality. Utility Model Content

[0005] This invention provides an ice-making evaporator that eliminates noise. This invention eliminates the noise generated between the spiral ice scraping mechanism and the sealing assembly during the freezing process.

[0006] The technical solutions to the above technical problems are as follows:

[0007] An ice-making evaporator for noise reduction includes a cylinder, a first end cap, a second end cap, a spiral ice-scraping mechanism, a sealing assembly, a water pipe, and an evaporation assembly for guiding refrigerant. The first end cap is fixed to one end of the cylinder, and the second end cap is fixed to the other end of the cylinder. The second end cap has an ice outlet. At least a portion of the spiral ice-scraping mechanism is located inside the cylinder. One end of the spiral ice-scraping mechanism mates with the first end cap, and the other end mates with the second end cap. A portion of the sealing assembly is fitted onto and fixed to the spiral ice-scraping mechanism, and the other portion of the sealing assembly mates with the first end cap. The cylinder has mounting holes on its circumference, and the water pipe mates with the mounting holes on the cylinder. The evaporation assembly is fitted onto and fixed to the cylinder. The evaporation assembly also includes a protective sleeve to prevent the sealing assembly from freezing. The protective sleeve surrounds the sealing assembly and mates with the cylinder and / or the first end cap.

[0008] This invention adds a protective sleeve to the existing technology. Through the isolation effect of the protective sleeve, even if water enters the annular cavity between the protective sleeve and the sealing component, in the event of a frozen cylinder, because the amount of water in the annular cavity is small, and the water in the annular cavity is in a dynamic state under the stirring action of the moving shaft seal, the water in the annular cavity is difficult to turn into ice. Therefore, the water in the annular cavity cannot freeze the moving shaft seal. Thus, in the event of a frozen cylinder, the moving shaft seal always rotates with the spiral ice scraping mechanism, thereby avoiding relative movement between the spiral ice scraping mechanism and the moving shaft seal, and thus avoiding noise caused by friction between the spiral ice scraping mechanism and the moving shaft seal. Attached Figure Description

[0009] Figure 1 A three-dimensional view of an ice-making evaporator designed to eliminate noise.

[0010] Figure 2 Cross-sectional view of an ice-making evaporator designed to eliminate noise.

[0011] Figure 3 This is an assembly drawing of the moving shaft seal and the spring.

[0012] Figure 4 This is a structural diagram of the protective sleeve.

[0013] Labels in the attached diagram:

[0014] Cylinder body 1, mounting hole 1a, first end cover 2, axial boss 2a, central through hole 2b, second end cover 3, ice outlet 3a, spiral ice scraping mechanism 4, blade shaft 4a, scraper 4b, flange 4c, ice breaking component 4d, sealing assembly 5, moving shaft seal 5a, stationary shaft seal 5b, spring 5c, annular protrusion 5d, upper radial flange 5e, lower radial flange 5f, graphite 5g, water pipe 6, evaporation assembly 7, protective sleeve 8, protective sleeve body 8a, radial boss 8b, relief groove 8c, drainage groove 8d, annular cavity 9, sealing ring 10. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] like Figures 1 to 4 As shown, the noise-eliminating ice evaporator of this utility model includes a cylinder 1, a first end cap 2, a second end cap 3, a spiral ice scraping mechanism 4, a sealing assembly 5, a water pipe 6, an evaporation assembly 7 for guiding the refrigerant, and a protective sleeve 8 to prevent the sealing assembly 5 from freezing. The following is a detailed description of each part and the relationship between them.

[0017] The first end cap 2 is fixed to one end of the cylinder body 1. The first end cap 2 is provided with an axial boss 2a. The axial boss 2a is inserted into the cylinder body 1 and fixed to the cylinder body 1. The first end cap 2 and the cylinder body 1 are fixed by welding. The boss 2a is interference-fitted with the cylinder body 1. The first end cap 2 and the boss 2a are provided with a central through hole 2b. The central through hole 2b is used to cooperate with the spiral ice scraping mechanism 4 and the sealing assembly 5.

[0018] The second end cap 3 is fixed to the other end of the cylinder body 1. The second end cap 3 is fitted onto the other end of the cylinder body 1. The second end cap 3 and the cylinder body 1 are preferably fixed by a threaded connection. A sealing ring 10 is provided between the second end cap 3 and the cylinder body 1. For example, an annular groove is provided on the inner side wall of the second end cap 3. The sealing ring 10 mates with the annular groove on the inner side wall of the second end cap 3 and the outer circumferential surface of the cylinder body 1, forming a seal between the second end cap 3 and the cylinder body 1 through the sealing ring 10. The second end cap 3 is provided with an ice outlet 3a. When the spiral ice scraping mechanism 4 is working, ice is squeezed out from the ice outlet 3a.

[0019] At least a portion of the spiral ice scraping mechanism 4 is located inside the cylinder 1. One end of the spiral ice scraping mechanism 4 is engaged with the first end cover 2, and the other end of the spiral ice scraping mechanism 4 is engaged with the second end cover 3. The spiral ice scraping mechanism 4 includes a blade shaft 4a, a scraper 4b, and a flange 4c. The scraper 4b is spirally wound around the blade shaft 4a and fixed to the blade shaft 4a. The flange 4c is sleeved on the blade shaft 4a and fixed to the blade shaft 4a. The spiral ice scraping mechanism 4 also includes an ice-breaking component 4d, which is fixed to the blade shaft 4a and located above the ice outlet 3a. When ice is squeezed out from the ice outlet 3a and forms an ice strip, the ice-breaking component 4d, which rotates with the blade shaft 4a, breaks the ice strip.

[0020] A portion of the sealing assembly 5 is fitted onto and fixed to the spiral ice scraping mechanism 4, while the other portion of the sealing assembly 5 mates with the first end cap 2. The sealing assembly 5 includes a moving shaft seal 5a, a stationary shaft seal 5b, and a spring 5c. The moving shaft seal 5a is fitted onto and fixed to the cutter shaft 4a. For example, the cutter shaft 4a and the moving shaft seal 5a are press-fitted. The stationary shaft seal 5b is fitted onto and clearance-fitted to the cutter shaft 4a. The stationary shaft seal 5b is press-fitted to the central through hole 2b. The axial end face of the upper end of the stationary shaft seal 5b is in contact with the axial end face of the lower end of the moving shaft seal 5a.

[0021] The upper surface of the moving shaft seal 5a is provided with an annular protrusion 5d, and the circumferential surface of the moving shaft seal 5a is provided with an upper radial flange 5e and a lower radial flange 5f. There are multiple annular protrusions 5d, and the centers of these annular protrusions 5d are located at the same point. The annular protrusions 5d abut against the flange 4c. The spring 5c ​​is sleeved on the moving shaft seal 5a, with one end of the spring 5c ​​abutting against the upper radial flange 5e and the other end of the spring 5c ​​abutting against the lower radial flange 5f. The sealing assembly 5 also includes graphite 5g. The graphite 5g is located between the moving shaft seal 5a and the stationary shaft seal 5b. The material of the moving shaft seal 5a is preferably rubber. During assembly, the moving shaft seal 5a is compressed by the flange 4c and the graphite 5g, thereby compressing the spring 5c. When the graphite 5g wears, the moving shaft seal 5a and the spring 5c ​​extend, so that the annular protrusion 5d at the upper end of the moving shaft seal 5a keeps abutting against the flange 4b, and the lower end of the moving shaft seal 5a keeps abutting against the stationary shaft seal 5b and the graphite 5g respectively.

[0022] The cylinder body 1 has mounting holes 1a on its circumferential surface. Water pipe 6 mates with these mounting holes on the cylinder body 1, and is preferably fixed to the cylinder body 1 by welding. An evaporation assembly 7 is fitted onto and fixed to the cylinder body 1. The evaporation assembly 7 consists of a bellows, a medium inlet pipe, and a medium outlet pipe. The bellows is fitted onto and welded to the cylinder body 1, forming a channel for the flow of the heat exchange medium between the bellows and the cylinder body 1. The medium inlet pipe and the medium outlet pipe are respectively fixed to the bellows. Alternatively, the evaporation assembly 7 can be a pipe, spirally wound around the cylinder body 1.

[0023] A protective sleeve 8 surrounds the sealing assembly 5 and mates with the cylinder body 1 and / or the first end cap 2. The protective sleeve 8 includes a protective sleeve body 8a and a radial boss 8b. The protective sleeve body 8a surrounds the sealing assembly 5, the radial boss 8b is fixed to the protective sleeve body 8a, and the radial boss 8b is interference-fitted with the inner wall surface of the cylinder body 1. The axial boss 2a supports the protective sleeve 8.

[0024] In this invention, there are multiple radial bosses 8b, which are arranged at intervals along the circumference of the protective sleeve body 8a, forming a clearance groove 8c for water flow between two adjacent radial bosses 8b. In addition to the aforementioned structure, a single radial boss 8b may also be used, and the radial boss 8b is provided with a through hole for water flow.

[0025] During operation, since the protective sleeve 8 is stationary while the sealing assembly 5 is rotating, a gap is left between one end of the protective sleeve 8 and the flange 4c to prevent friction between the protective sleeve 8 and the flange 4c, thus avoiding noise caused by friction. In this invention, since the radial boss 8b is located below the axial end face of one end of the sleeve body 8a, the aforementioned gap is provided between one end of the sleeve body 8a and the flange 4c.

[0026] After the protective sleeve body 8a surrounds the sealing component 5, an annular cavity 9 is formed between the protective sleeve body 8a and the sealing component 5. The protective sleeve body 8a is provided with a drain hole or drain groove 8d for draining water from the annular cavity 9. The lower limit of the height of the mounting hole 1a is lower than the lower limit of the height of the drain hole or drain groove 8d.

[0027] Because there is a gap between one end of the protective sleeve 8 and the flange 4c, when water enters the cylinder 1 through the water pipe 6, the water will enter the annular cavity 9. When the evaporator stops working, if the water accumulated in the annular cavity 9 cannot be drained, bacteria will easily grow. In addition, because there are minerals such as calcium and magnesium in the water, these minerals will easily form scale after long-term accumulation. In this utility model, a drain groove 8d is provided on the protective sleeve body 8a, and the lower limit of the height of the mounting hole 1a is lower than the lower limit of the height of the drain hole or the drain groove 8d. When the evaporator stops working, the water in the annular cavity 9 will flow back through the water pipe 6 under the action of the height difference, so as to avoid water accumulation in the annular cavity 9.

[0028] In this invention, by adding a protective sleeve 8 to the existing technology, the protective sleeve 8 isolates water from the annular cavity 9 between the protective sleeve 8 and the sealing component 5. In the event of freezing, the water volume in the annular cavity 9 is small, and the water in the annular cavity is in a dynamic state due to the stirring action of the moving shaft seal 5a. The water in the annular cavity 9 is difficult to turn into ice, so the water in the annular cavity 9 cannot freeze the moving shaft seal 5a. Thus, in the event of freezing, the moving shaft seal 5a always rotates with the spiral ice scraping mechanism 4, thereby avoiding relative movement between the spiral ice scraping mechanism 4 and the moving shaft seal 5a, and thus avoiding noise caused by friction between the spiral ice scraping mechanism 4 and the moving shaft seal 5a.

Claims

1. A noise-eliminating ice-making evaporator, comprising a cylinder (1), a first end cap (2), a second end cap (3), a spiral ice-scraping mechanism (4), a sealing assembly (5), a water pipe (6), and an evaporation assembly (7) for guiding refrigerant. The first end cap (2) is fixed to one end of the cylinder (1), and the second end cap (3) is fixed to the other end of the cylinder (1). The second end cap (3) is provided with an ice outlet (3a). At least a portion of the spiral ice-scraping mechanism (4) is located inside the cylinder (1). One end of the spiral ice scraping mechanism (4) is fitted with the first end cap (2), and the other end of the spiral ice scraping mechanism (4) is fitted with the second end cap (3). A part of the sealing assembly (5) is fitted onto the spiral ice scraping mechanism (4) and fixed to the spiral ice scraping mechanism (4). The other part of the sealing assembly (5) is fitted with the first end cap (2). The cylinder body (1) has mounting holes (1a) on its circumferential surface. The water pipe (6) fits into the mounting holes on the cylinder body (1). The evaporation assembly (7) is fitted onto the cylinder body (1) and fixed to the cylinder body (1). The characteristic of this assembly is that... It also includes a protective sleeve (8) to prevent the sealing assembly (5) from freezing, the protective sleeve (8) surrounding the sealing assembly (5), the protective sleeve (8) cooperating with the cylinder body (1) and / or the first end cap (2).

2. The noise-eliminating ice-making evaporator according to claim 1, characterized in that, The spiral ice scraping mechanism (4) includes a blade shaft (4a), a scraper (4b), and a flange (4c). The scraper (4b) is spirally wound around the blade shaft (4a) and fixed to the blade shaft (4a). The flange (4c) is sleeved on the blade shaft (4a) and fixed to the blade shaft (4a). A gap is left between one end of the protective sleeve (8) and the flange (4c) to prevent friction between the protective sleeve (8) and the flange (4c).

3. The noise-eliminating ice-making evaporator according to claim 1, characterized in that, The first end cap (2) is provided with an axial boss (2a), which is inserted into the cylinder (1) and fixed to the cylinder (1). The axial boss (2a) supports the protective sleeve (8).

4. The noise-eliminating ice-making evaporator according to any one of claims 1 to 3, characterized in that, The protective sleeve (8) includes a protective sleeve body (8a) and a radial boss (8b). The protective sleeve body (8a) surrounds the sealing assembly (5), and the radial boss (8b) is fixed to the protective sleeve body (8a). The radial boss (8b) is interference-fitted with the inner wall surface of the cylinder (1). There are multiple radial bosses (8b), which are arranged at circumferential intervals along the protective sleeve body (8a), forming a relief groove (8c) for water flow between two adjacent radial bosses (8b); or There is one radial boss (8b), and the radial boss (8b) is provided with a through hole for water to flow through.

5. The noise-eliminating ice-making evaporator according to claim 4, characterized in that, After the protective sleeve body (8a) surrounds the sealing component (5), an annular cavity (9) is formed between the protective sleeve body (8a) and the sealing component (5). The protective sleeve body (8a) is provided with a drain hole or drain groove (8d) for draining water from the annular cavity (9). The lower limit of the height of the mounting hole (1a) is lower than the lower limit of the height of the drain hole or drain groove (8d).

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