Evaporator for ice maker

Abstract

The utility model belongs to the technical field of ice-making machines, and provides an evaporator for an ice-making machine, the evaporator comprises a spiral ice knife and an upper cover, a mounting groove extending in the axial direction is formed in the upper cover, one end, close to the upper cover, of the spiral ice knife extends inwards in the circumferential direction to form an abutting table, and the end, close to the upper cover, of the spiral ice knife is sleeved with an upper shaft sleeve; one end of the upper shaft sleeve abuts against the abutting table, one end of the upper shaft sleeve partially extends into the installation groove, the upper shaft sleeve shell can slide in the axial direction relative to the installation groove, an elastic piece is arranged between the groove bottom of the installation groove and one end of the upper shaft sleeve, and the elastic piece enables the spiral ice skate blade to have the trend of moving towards the end away from the upper cover in the axial direction through the upper shaft sleeve. The ice maker has the advantages that the elastic piece provides the acting force for the spiral ice blade to move towards the end away from the upper cover in the axial direction when the spiral ice blade extrudes ice, so that the spiral ice blade cannot shake in the axial direction due to stress in the ice extrusion process, abnormal sound generated in the use process is reduced, the spiral ice blade is more stable in the ice extrusion process, and the ice extrusion efficiency is improved. And the ice outlet quality is improved.

Description

Technical Field

[0001] The present application belongs to the technical field of ice making machines, and in particular relates to an evaporator for an ice making machine. Background Art

[0002] The evaporator is a heat exchanger that allows low-pressure, low-temperature refrigerant liquid to absorb the heat of the cooled medium during the boiling process, thereby achieving the purpose of refrigeration. The evaporator is widely used in the field of ice making. The evaporator is equipped with a rotating shaft and a scraper that can rotate in a circumferential direction. The scraper is connected to the rotating shaft. Driven by the reducer, the rotating shaft of the evaporator slowly rotates and rises. Water enters from the water inlet at the bottom of the evaporator and forms a water film on the scraper. The water film exchanges heat with the refrigerant in the refrigerant flow channel, and the temperature drops rapidly, forming liquid ice. Under the push and squeeze of the scraper, it is finally produced from the ice outlet at the top of the evaporator.

[0003] The existing evaporator, for example, the utility model patent with patent publication number CN217636277U, discloses an evaporator assembly for an ice maker, wherein a mechanical seal structure is provided between the spiral ice blade and the base, and the mechanical seal structure mainly includes the following four types of components: a. main seal: dynamic ring and static ring; b. auxiliary seal: sealing ring; c. clamping member: spring, push ring; d. transmission member: spring seat and key or fixing screw, through which a sliding seal can be achieved between the dynamic ring and the static ring. Because a spring structure is provided between the spiral ice blade and the base, the spiral ice blade will shake along the axial direction during rotation, causing the existing evaporator to produce abnormal noise during use. Utility Model Content

[0004] The purpose of the present application is to provide an evaporator for an ice maker, which provides a force through an elastic member to move the spiral ice blade axially away from one end of the upper cover when squeezing ice, so that the spiral ice blade will not shake axially due to the force during the process of squeezing out ice, thereby reducing abnormal noise generated during use.

[0005] The technical solution adopted by the present application to solve the above-mentioned technical problems is as follows: an evaporator for an ice maker is proposed, comprising: a spiral ice blade and an upper cover, wherein the upper cover is provided with an installation groove extending in an axial direction, and one end of the spiral ice blade close to the upper cover extends inwardly along the circumferential direction to form an abutment platform, and an upper shaft sleeve is connected to the outer shell of the end of the spiral ice blade close to the upper cover, and one end of the upper shaft sleeve abuts against the abutment platform, and one end of the upper shaft sleeve partially extends into the installation groove, and the upper shaft sleeve shell can slide axially relative to the installation groove, and an elastic member is provided between the bottom of the installation groove and one end of the upper shaft sleeve, and the elastic member enables the spiral ice blade to have a tendency to move axially away from one end of the upper cover through the upper shaft sleeve.

[0006] Through the above-mentioned technical features, the elastic member provides a force for the spiral ice blade to move axially away from one end of the upper cover when squeezing out ice, so that the spiral ice blade will not shake axially due to the force during the process of squeezing out ice, thereby reducing abnormal noises generated during use and making the spiral ice blade more stable during the process of squeezing out ice, thereby improving the quality of ice output.

[0007] Preferably, the upper cover is provided with a plurality of ice outlet holes evenly spaced along the circumference.

[0008] Through the above technical features, the spiral ice blade rotates to squeeze the ice out of the ice outlet hole.

[0009] Preferably, an ice-breaking platform is connected to the end of the upper cover away from the spiral ice blade, and the ice-breaking platform is coaxially arranged with the upper cover. The ice-breaking platform includes a columnar transition section and a conical ice-breaking section. The diameter of the ice-breaking section gradually increases toward the end away from the upper cover, and the maximum diameter of the ice-breaking section is greater than the diameter of the concentric circle where the ice outlet hole is located.

[0010] Through the above technical features, after the ice strip is squeezed out through the ice outlet hole, the ice strip continues to rise in the vertical direction until the upper end of the ice strip abuts against the side wall of the broken ice section and bends to form granular ice cubes.

[0011] Preferably, it also includes an inner tube, the inner side of which forms a cavity, the ice outlet hole is connected to the cavity, a water inlet pipe is provided on the outer peripheral wall of the inner tube, the water inlet pipe is connected to the cavity, the outer tube is coaxially sleeved with an outer tube on the outer periphery of the inner tube, a refrigeration cavity for accommodating refrigerant is formed between the inner tube and the outer tube, and the upper and lower ends of the outer tube are respectively connected to a return air pipe and an air inlet pipe, the air inlet pipe and the return air pipe are both connected to the refrigeration cavity, and the spiral ice knife is axially rotatable in the cavity.

[0012] Through the above technical features, when water is passed into the inner tube from the water inlet pipe, the refrigerant enters the refrigeration cavity formed between the inner tube and the outer tube from the air inlet pipe at the same time, and then returns to the compressor from the air return pipe, working in a cycle. The refrigerant evaporates and absorbs heat in the cavity to cool the water in the cavity, reaching the freezing point and condensing into ice. The spiral ice knife rotates, and the spiral ice knife pushes and compacts the frozen ice crystals in the cavity through the spiral, and then pushes them out through the ice outlet hole of the upper cover to form icicles, and then continuously pushes them out until the upper end of the ice bar hits the side wall of the broken ice section and bends to form granular ice cubes, which fall into the ice storage bucket for use.

[0013] Preferably, the outer periphery of both ends of the inner tube is respectively connected with an upper flange and a lower flange, the upper flange is connected to the upper cover, the end of the lower flange away from the inner tube is connected to a base, and the two ends of the spiral ice blade are respectively rotatably connected to the upper cover and the base.

[0014] Through the above technical features, the two ends of the spiral ice blade are rotatably connected to the upper cover and the base respectively, and the upper flange and the lower flange play a role in connecting and fixing the upper cover and the base.

[0015] Preferably, an insertion part is fixedly provided in the middle of the base, a through hole is opened inside the insertion part and passes through the base from top to bottom, the lower end of the inner tube is sleeved on the insertion part, and the lower end of the spiral ice blade is rotatably matched with the through hole by setting a lower shaft sleeve.

[0016] Through the above technical features, the spiral ice blade is rotatably connected in the insertion part through the lower sleeve.

[0017] Preferably, a sealing ring is provided between the inner tube and the insertion part, a sealing gasket is provided between the lower sleeve and the bottom of the insertion part, and the sealing gasket abuts against the outer periphery of the spiral ice blade, and a mechanical sealing assembly is provided between the spiral ice blade and the lower sleeve.

[0018] Through the above technical features, the lower end of the inner tube is sealed and protected by the sealing ring, the sealing gasket and the mechanical sealing assembly.

[0019] Preferably, a square hole is provided at the lower end of the spiral ice blade, and the square hole is used to connect the output shaft of the reducer.

[0020] Through the above technical features, the output shaft of the reduction motor is connected to the square hole, driving the spiral ice blade to rotate.

[0021] In summary, this application has the following beneficial effects:

[0022] (1) The present application provides a force for the spiral ice blade to move axially away from one end of the upper cover when squeezing out ice through an elastic member, so that the spiral ice blade will not shake axially due to the force during the process of squeezing out ice, thereby reducing abnormal noise generated during use;

[0023] (2) The present application forms a sealing protection for the lower end of the inner tube by means of a sealing ring, a sealing gasket and a mechanical sealing assembly;

[0024] (3) The present application uses an ice-breaking platform to bend and break the ice strips that abut against the side wall of the ice-breaking section to form granular ice blocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of an implementation scheme of the present application;

[0026] Figure 2 This is a schematic cross-sectional structure diagram of an implementation scheme of the present application;

[0027] Figure 3 This is a schematic structural diagram of a base according to an embodiment of the present application.

[0028] In the figure, 1. spiral ice blade; 11. abutment platform; 12. mechanical sealing assembly; 13. square hole; 2. upper cover; 21. mounting groove; 22. ice outlet hole; 23. ice-breaking platform; 231. transition section; 232. ice-breaking section; 3. upper sleeve; 4. elastic member; 5. inner tube; 51. cavity; 52. water inlet pipe; 53. upper flange; 54. lower flange; 6. outer tube; 61. refrigeration cavity; 62. return air pipe; 63. air inlet pipe; 7. base; 71. plug-in part; 72. through hole; 73. sealing gasket; 8. lower sleeve. DETAILED DESCRIPTION

[0029] The following are specific embodiments of the present application and combined with the accompanying drawings to further describe the technical solution of the present application, but the present application is not limited to these embodiments.

[0030] like Figure 1 , Figure 2 As shown, the present application discloses an evaporator for an ice maker, comprising: an inner tube 5 and an outer tube 6 arranged coaxially, the outer tube 6 being welded to the outer periphery of the inner tube 5. A cavity 51 is formed inside the inner tube 5, a spiral ice blade 1 is connected in the cavity 51 along the axial rotation, a water inlet pipe 52 is provided on the inner tube 5, and the water inlet pipe 52 is communicated with the cavity 51; a refrigeration cavity 61 is formed between the inner tube 5 and the outer tube 6, an air inlet pipe 63 and an air return pipe 62 are connected to the outer tube 6, and both the water inlet pipe 52 and the air return pipe 62 are communicated with the refrigeration cavity 61.

[0031] The upper and lower ends of the inner tube 5 are respectively sleeved with an upper flange 53 and a lower flange 54, the upper end of the upper flange 53 is connected to the upper cover 2, and the lower end of the lower flange 54 is connected to the base 7. The two ends of the spiral ice blade 1 are rotatably connected to the upper cover 2 and the base 7 respectively.

[0032] An axially extending mounting groove 21 is provided at one end of the upper cover 2 close to the spiral ice blade 1, and an end of the spiral ice blade 1 close to the upper cover 2 extends inwardly along the circumferential direction to form an abutment platform 11, and an upper shaft sleeve 3 is sleeved on the outer circumference of one end of the spiral ice blade 1 close to the upper cover 2, the spiral ice blade 1 is rotatably connected to the upper shaft sleeve 3, the lower end of the upper shaft sleeve 3 abuts against the abutment platform 11, and an elastic member 4 is provided at the upper end of the upper shaft sleeve 3 and the bottom of the mounting groove 21, the elastic member 4 is a spring, the shell of the upper shaft sleeve 3 slides relatively along the mounting groove 21, and the elastic member 4 has a tendency to push the upper shaft sleeve 3 to move axially away from one end of the upper cover 2.

[0033] A plurality of ice outlet holes 22 are evenly spaced along the circumference of the upper cover 2, and the ice outlet holes 22 are connected to the cavity 51. An end of the upper cover 2 away from the spiral ice blade 1 is coaxially connected to an ice breaking platform 23, and the ice breaking platform 23 includes a columnar transition section 231 and a conical ice breaking section 232. The diameter of the ice breaking section 232 gradually increases toward the end away from the upper cover 2, and the maximum diameter of the ice breaking section 232 is greater than the diameter of the concentric circle where the ice outlet holes 22 are located.

[0034] like Figure 3 As shown, an insertion portion 71 is fixedly provided in the middle of the base 7, and a through hole 72 is opened inside the insertion portion 71 and penetrates the base 7 from top to bottom. The lower end of the inner tube 5 is sleeved on the outer periphery of the insertion portion 71, and a lower shaft sleeve 8 is sleeved on the outer periphery of the lower end of the spiral ice blade 1, and the lower shaft sleeve 8 is rotatably connected to the inner peripheral wall of the through hole 72.

[0035] A mechanical seal assembly 12 is provided between the spiral ice blade 1 and the lower sleeve 8, and the mechanical seal assembly 12 adopts a conventional sealing structure; a sealing gasket 73 is provided between the lower sleeve 8 and the bottom of the insertion part 71, and the sealing gasket 73 abuts against the outer periphery of the spiral ice blade 1; a sealing ring is provided between the inner tube 5 and the insertion part 71.

[0036] A square hole 13 is formed at the lower end of the spiral ice blade 1 , and the output shaft of the reducer is connected to the square hole 13 of the spiral ice blade 1 .

[0037] Working principle: when water is introduced into the inner tube 5 from the water inlet pipe 52, the refrigerant simultaneously enters into the refrigeration cavity 61 formed between the inner tube 5 and the outer tube 6 from the air inlet pipe 63, and then returns to the compressor from the air return pipe 62, and works in a cycle. The refrigerant vaporizes and absorbs heat in the cavity 51 to cool the water in the cavity 51, and condenses into ice when the freezing point is reached. The spiral ice blade 1 rotates, and the spiral ice blade 1 pushes and compacts the frozen ice crystals in the cavity 51 upward through the spiral, and then pushes them out through the ice outlet hole 22 of the upper cover 2 to form icicles, and then continuously pushes them out until the upper end of the ice bar abuts against the side wall of the broken ice section 232, bends, and forms granular ice cubes, which fall into the ice storage bucket for use.

[0038] The specific embodiments described herein are merely examples of the present application. A person skilled in the art of the present application may make various modifications or additions to the specific embodiments described or replace them in a similar manner without departing from the scope defined in the present application.

Claims

1. An evaporator for an ice making machine, comprising: A spiral ice blade (1) and an upper cover (2), characterized in that an axially extending mounting groove (21) is provided inside the upper cover (2), and one end of the spiral ice blade (1) close to the upper cover (2) extends inwardly along the circumferential direction to form an abutment platform (11), and an upper shaft sleeve (3) is connected to the outer shell of the end of the spiral ice blade (1) close to the upper cover (2), and one end of the upper shaft sleeve (3) abuts against the abutment platform (11), and one end of the upper shaft sleeve (3) partially extends into the mounting groove (21), and the upper shaft sleeve (3) shell can slide axially relative to the mounting groove (21), and an elastic member (4) is provided between the bottom of the mounting groove (21) and one end of the upper shaft sleeve (3), and the elastic member (4) enables the spiral ice blade (1) to have a tendency to move axially away from one end of the upper cover (2) through the upper shaft sleeve (3).

2. The evaporator for an ice maker according to claim 1, characterized in that: The upper cover (2) is provided with a plurality of ice outlet holes (22) evenly spaced along the circumference.

3. The evaporator for an ice-making machine according to claim 2, characterized in that: An end of the upper cover (2) away from the spiral ice blade (1) is connected to an ice-breaking platform (23), and the ice-breaking platform (23) is coaxially arranged with the upper cover (2). The ice-breaking platform (23) comprises a columnar transition section (231) and a conical ice-breaking section (232), and the diameter of the ice-breaking section (232) gradually increases toward the end away from the upper cover (2), and the maximum diameter of the ice-breaking section (232) is greater than the diameter of the concentric circle where the ice outlet hole (22) is located.

4. The evaporator for an ice maker according to claim 2 or 3, characterized in that: The invention also comprises an inner tube (5), the inner side of which forms a cavity (51), the ice outlet hole (22) being in communication with the cavity (51), a water inlet pipe (52) being provided on the outer peripheral wall of the inner tube (5), the water inlet pipe (52) being in communication with the cavity (51), an outer tube (6) being coaxially sleeved on the outer periphery of the inner tube (5), a refrigeration cavity (61) for accommodating a refrigerant being formed between the inner tube (5) and the outer tube (6), and an air return pipe (62) and an air inlet pipe (63) being respectively connected at the upper and lower ends of the outer tube (6), the air inlet pipe (63) and the air return pipe (62) being both in communication with the refrigeration cavity (61), and the spiral ice blade (1) being rotatably arranged in the cavity (51) along the axial direction.

5. The evaporator for an ice-making machine according to claim 4, characterized in that: The outer periphery of both ends of the inner tube (5) is respectively connected to an upper flange (53) and a lower flange (54); the upper flange (53) is connected to the upper cover (2); the end of the lower flange (54) away from the inner tube (5) is connected to a base (7); and the two ends of the spiral ice blade (1) are respectively rotatably connected to the upper cover (2) and the base (7).

6. The evaporator for an ice-making machine according to claim 5, characterized in that: An inserting portion (71) is fixedly provided in the middle of the base (7), and a through hole (72) is provided inside the inserting portion (71) and passes through the base (7) from top to bottom. The lower end of the inner tube (5) is sleeved on the outer periphery of the inserting portion (71), and the lower end of the spiral ice blade (1) is rotatably matched with the inner peripheral wall of the through hole (72) by providing a lower shaft sleeve (8).

7. The evaporator for an ice-making machine according to claim 6, characterized in that: A sealing ring is provided between the inner tube (5) and the inserting part (71), a sealing gasket (73) is provided between the lower sleeve (8) and the bottom of the inserting part (71), and the sealing gasket (73) is in contact with the outer periphery of the spiral ice blade (1), and a mechanical sealing assembly (12) is provided between the spiral ice blade (1) and the lower sleeve (8).

8. The evaporator for an ice-making machine according to claim 4, characterized in that: A square hole (13) is provided at the lower end of the spiral ice blade (1), and the square hole (13) is used to connect the output shaft of a reducer.

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