Ice making device and ice maker

Abstract

The invention discloses an ice-making device and an ice maker, the ice-making device comprises an ice-making barrel, a screw and an evaporator, and the ice-making barrel is provided with an ice-making cavity and a mounting port which are communicated with each other. The screw rod comprises a rod body and a spiral scraper which are connected with each other, the rod body is mounted at the mounting port, and the spiral scraper spirally extends along the axis of the rod body and is positioned in the ice-making cavity. The evaporator is arranged on the ice-making barrel in a sleeving mode and used for containing a cooling medium transferring cooling capacity to the ice-making cavity. Wherein the ice-making barrel is provided with a liquid inlet which is communicated with the ice-making cavity and deviates from the ice outlet end, and in the direction perpendicular to the axis of the ice-making barrel, the caliber of the end, close to the ice-making cavity, of the liquid inlet is larger than that of the end, away from the ice-making cavity, of the liquid inlet. The liquid to be frozen flows along the inner wall of the ice making barrel under the action of the Coanda effect when being introduced into the ice making cavity, so that an ice film with the preset thickness is formed under freezing of the cooling medium, the icing thickness is controllable, the screw is prevented from being soaked in the liquid to be frozen, and the risk that the screw works abnormally is reduced.

Description

Technical Field

[0001] Embodiments of the present invention relate to the technical field of ice making, and in particular to an ice making device and an ice maker. Background Art

[0002] An ice maker is a mechanical device that cools water with a refrigerant supplied by a refrigeration system to an evaporator to generate ice. Among them, as the core component of the ice maker, the ice making device usually consists of a screw with a scraper, a cylinder, and an evaporator. The internal space of the cylinder is used to introduce the liquid for ice making. An evaporator is arranged outside the cylinder. After the evaporator is filled with a cooling medium, it can freeze the liquid inside the cylinder to form ice cubes. During operation, the screw with the scraper rotates to scrape the ice on the inner wall of the cylinder and convey the ice outwards.

[0003] However, the screw of the ice making device on the market is directly immersed in the cylinder filled with the liquid to be frozen. When the cooling medium supplied to the evaporator is abnormal and a large amount of ice forms inside the cylinder, the screw fails to scrape off the ice inside the cylinder in time, making it increasingly difficult to rotate and even getting stuck, resulting in abnormal operation of the screw. Summary of the Invention

[0004] In order to solve the above technical problems, embodiments of the present invention provide an ice making device and an ice maker that can reduce abnormal operation of the screw.

[0005] Embodiments of the present invention solve their technical problems by adopting the following technical solutions:

[0006] An ice making device includes an ice making cylinder, a screw, and an evaporator. The ice making cylinder is provided with an ice making cavity and an installation opening that are connected and communicated; the screw includes a rod body and a spiral scraper that are connected. The rod body is installed in the installation opening, and the spiral scraper extends spirally along the axis of the rod body and is located in the ice making cavity. The spiral scraper is used to scrape the ice generated in the ice making cavity; the evaporator is sleeved on the ice making cylinder, and the evaporator is used to accommodate a cooling medium that transfers cold to the ice making cavity. Among them, the ice making cylinder is provided with a liquid inlet that is communicated with the ice making cavity, and the liquid inlet is arranged away from the ice outlet end of the ice making cylinder. In the direction perpendicular to the axis of the ice making cylinder, the diameter of the end of the liquid inlet close to the ice making cavity is larger than the diameter of the end of the liquid inlet far from the ice making cavity.

[0007] In some embodiments, the number of the liquid inlets is multiple, and the multiple liquid inlets are arranged at intervals and are annularly arranged around the ice making cavity.

[0008] In some embodiments, the shape of the liquid inlet includes a frustum of a cone shape, an elliptical frustum shape, or a prism shape.

[0009] In some embodiments, the inner wall surface of the ice-making cylinder is provided with a spiral groove, and the spiral groove is configured to spirally extend along the axis of the ice-making cylinder in a first helix.

[0010] In some embodiments, the spiral groove includes a first wall surface and a second wall surface, the first wall surface and the second wall surface intersect at a first intersection line. Taking the plane coincident with the axis of the ice-making cylinder as the projection plane and the direction where the axis of the ice-making cylinder is located as the first direction, the dimension of the positive projection of the first wall surface on the projection plane in the first direction is M1, and the dimension of the positive projection of the second wall surface on the projection plane in the first direction is M2, and M1>M2 is satisfied.

[0011] In some embodiments, the evaporator includes a container body, a first delivery pipe, and a second delivery pipe. Both the first delivery pipe and the second delivery pipe are communicated with the container body. The container body is sleeved on the ice-making cylinder. Among them, one of the first delivery pipe and the second delivery pipe is used to input a cooling medium into the container body, and the other is used to output the cooling medium from the container body.

[0012] In some embodiments, the evaporator further includes a guide vane. The guide vane is arranged in the container body and is configured to spirally extend along the axis of the ice-making cylinder in a second helix. The first helix is parallel to the second helix. Among them, the guide vane, the container body, and the outer wall surface of the ice-making cylinder construct a spiral channel. Along the direction perpendicular to the axis of the ice-making cylinder, the projection of the spiral groove is located in the spiral channel, and the spiral channel is used to constrain the cooling medium to move along a preset path.

[0013] In some embodiments, the spiral groove includes a first wall surface and a second wall surface, the first wall surface and the second wall surface intersect at a first intersection line. Taking the direction where the axis of the ice-making cylinder is located as the first direction, the guide vane includes a first surface and a second surface arranged oppositely along the first direction. The perpendicular distance between the first intersection line and the first surface in the first direction is d1, and the perpendicular distance between the first intersection line and the second surface in the first direction is d2, and d1 = d2 is satisfied, and d1>0, d2>0.

[0014] In some embodiments, the ice-making device further includes a liquid supply tank. The liquid supply tank is sleeved on the ice-making cylinder. The liquid supply tank is provided with a liquid injection port, and the liquid injection port is communicated with the liquid inlet. Among them, the distance between the liquid injection port and the ice outlet end of the ice-making cylinder is less than the distance between the liquid inlet and the ice outlet end of the ice-making cylinder.

[0015] In some embodiments, the ice-making device further includes a cylinder cover, which is connected to the ice outlet end of the ice-making cylinder. The cylinder cover is provided with an ice-squeezing hole. The diameter of the end of the ice-squeezing hole close to the ice-making cavity is C1, and the diameter of the end of the ice-squeezing hole far from the ice-making cavity is C2, and C1 > C2 is satisfied.

[0016] The embodiments of the present invention also adopt the following technical solutions to solve its technical problems:

[0017] An ice maker includes the above-mentioned ice-making device.

[0018] The beneficial effects of the embodiments of the present invention are as follows: The ice-making device provided by the embodiments of the present application sets the position of the liquid inlet away from the ice outlet end of the ice-making cylinder, and sets the diameter of the end of the liquid inlet close to the ice-making cavity to be larger than the diameter of the end far from the ice-making cavity. When in use, the flow rate of the liquid to be frozen flowing into the ice-making cavity along the liquid inlet can be reduced, so that the liquid to be frozen flows along the inner wall surface of the ice-making cavity under the action of the Coanda effect to form a liquid film with a predetermined thickness, and will form an ice film with a preset thickness under the freezing of the cooling medium introduced into the evaporator, which facilitates the spiral ice scraper of the screw to scrape ice in time, and avoids the screw being immersed in the liquid to be frozen, reduces the risk of abnormal operation of the screw, and is beneficial to improving the stability of the ice-making device. Description of the Drawings

[0019] One or more embodiments are exemplarily illustrated by the pictures in the corresponding drawings. These exemplary illustrations do not limit the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements, unless otherwise stated, and the drawings in the drawings do not constitute a proportional limitation.

[0020] Figure 1 is a schematic structural diagram of the ice-making device of one embodiment of the present application;

[0021] Figure 2 is Figure 1 a cross-sectional view of a part of ;

[0022] Figure 3 is Figure 2 an enlarged view of part E in ;

[0023] Figure 4 is Figure 1 a structural exploded view of the ice-making cylinder and the cylinder cover in ;

[0024] Figure 5 is Figure 1 a schematic diagram of the evaporator in ;

[0025] Figure 6 is Figure 5 the guide vane in ;

[0026] Figure 7 is a cross-sectional view of an ice-making device according to another embodiment of the present application;

[0027] Figure 8 is a structural block diagram of an ice maker according to still another embodiment of the present application;

[0028] In the figure: 100, ice maker; 1, ice-making device; 2, ice-making cylinder; 3, screw; 4, evaporator; 5, liquid supply tank; 6, cylinder cover; 7, sealing assembly;

[0029] 21, ice-making cavity; 22, installation opening; 23, spiral groove; 24, liquid inlet; 25, ice outlet end;

[0030] 231, first wall surface; 232, second wall surface; 233, first intersection line; 2a, first connecting seat; 2b, cylinder body; 2c, second connecting seat; 201, first connecting hole; 202, second connecting hole;

[0031] 31, rod body; 32, spiral scraper;

[0032] 41, container body; 42, first delivery pipe; 43, second delivery pipe; 44, guide vane; 401, spiral channel; 441, first surface; 442, second surface;

[0033] 501, liquid infusion port; 61, ice extrusion hole; 62, insertion interface;

[0034] 71, first sealing plug; 72, second sealing plug; 73, elastic member; 74, first sealing pressing piece; 75, second sealing pressing piece. Detailed Embodiments

[0035] For ease of understanding of the present invention, the present invention will be described in more detail below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element or there can be one or more intermediate elements therebetween. When an element is described as "connected to" another element, it can be directly connected to the other element or there can be one or more intermediate elements therebetween. The terms "upper", "lower", "inner", "outer", "vertical", "horizontal", etc. used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0036] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention belongs. The terms used in the specification of this invention are for the purpose of describing specific embodiments only and are not intended to limit the invention. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0037] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0038] As Figure 1-2 shown, an ice-making device 1 provided in one embodiment of the present application includes an ice-making cylinder 2, a screw 3, and an evaporator 4. The ice-making cylinder 2 is provided with an ice-making cavity 21 and a mounting opening 22 that communicate with each other. The screw 3 includes a rod body 31 and a spiral scraper 32 connected to each other. The spiral scraper 32 extends spirally along the axis of the rod body 31 and is located in the ice-making cavity 21. The rod body 31 is installed in the mounting opening 22, and the spiral scraper 32 is used to scrape off the ice generated from the spiral groove 23 into the ice-making cavity 21. The evaporator 4 is sleeved on the ice-making cylinder 2, and the evaporator 4 is used to accommodate a cooling medium that transfers cold to the ice-making cavity.

[0039] Among them, the ice-making cylinder 2 is provided with a liquid inlet 24 that communicates with the ice-making cavity 21, and the liquid inlet 24 is arranged away from the ice outlet end 25 of the ice-making cylinder 2. In the direction perpendicular to the axis OP of the ice-making cylinder 2, the caliber of the end of the liquid inlet 24 close to the ice-making cavity 21 is larger than the caliber of the end of the liquid inlet 24 far from the ice-making cavity 21. It should be noted here that the axis OP of the ice-making cylinder 2 and the axis of the rod body 31 can be collinear, or can be parallel and spaced, which is specifically determined according to the installation positions of the ice-making cylinder 2 and the rod body 31 during actual production and manufacturing. Figure 2 Although the axis OP of the ice-making cylinder 2 and the axis of the rod body 31 shown in

[0040] are collinear, this does not mean that the axis OP of the ice-making cylinder 2 and the axis of the rod body 31 must be collinear. In some embodiments, the axis OP of the ice-making cylinder 2 and the axis of the rod body 31 are spaced and parallel.

[0041] It should be understood that the Coanda effect (also known as the wall attachment effect) refers to the tendency of a fluid to change from its original flow direction to flow along the surface of a protruding object. When there is surface friction between the fluid and the surface of the object it flows over, the fluid will flow along the surface of the object. In other words, when the liquid to be frozen flows from the liquid inlet 24 to the ice-making chamber 21, the liquid will flow along the inner wall surface of the ice-making cylinder 2 when it flows out of the liquid inlet 24.

[0042] During use, the liquid to be frozen is introduced into the liquid inlet 24. When the liquid to be frozen flows into the ice-making chamber 21, due to the Coanda effect, the liquid to be frozen will flow along the inner wall surface of the ice-making cylinder 2 towards the ice outlet end 25 of the ice-making cylinder 2. When the liquid to be frozen flows to the area where the evaporator 4 surrounds the ice-making cylinder 2, it will absorb the cold quantity transferred by the cooling medium and freeze, thereby forming an ice film with a preset thickness. The screw 3 rotates under the drive of external power and the spiral scraper 32 scrapes the ice film. The broken ice scraped off the ice film gradually flows to the ice outlet end 25 of the ice-making cylinder 2 under the action of gravity and the pushing of the spiral scraper 32. And because the liquid to be frozen flows along the inner wall surface of the ice-making cylinder 2, the rod body 31 of the screw 3 is not immersed in the liquid to be frozen, avoiding the rod body 31 of the screw 3 being restricted by the condensed ice and staying stationary.

[0043] In some embodiments, there are multiple liquid inlets 24. The multiple liquid inlets 24 are arranged at intervals and surround the ice-making chamber 21. Compared with the method of only setting one liquid inlet 24, the method of using multiple liquid inlets 24 is beneficial for the liquid to be frozen to flow into the ice-making chamber 21 from multiple positions, so as to form a liquid film in a larger area in the circumferential direction of the ice-making cylinder 2. Thus, when the cooling medium freezes the liquid film, it is convenient to form an ice film in a larger area, which facilitates the spiral scraper 32 of the screw 3 to scrape more positions of the ice film and improves the ice-making efficiency.

[0044] It can be understood that the shape of the liquid inlet 24 can be frustum-shaped, or elliptical frustum-shaped, or prismatic, and of course it can also be other shapes, as long as the size of the caliber of the end of the liquid inlet 24 close to the ice-making chamber 21 is larger than the size of the caliber of the end of the liquid inlet 24 far from the ice-making chamber 21. In this embodiment, the shape of the liquid inlet 24 is frustum-shaped. It should be noted here that the position of the liquid inlet 24 on the ice-making cylinder 2 and the position where the evaporator 4 surrounds the ice-making cylinder 2 need to be spaced apart to reduce the risk that the liquid input into the ice-making chamber 21 from the liquid inlet 24 is directly frozen.

[0045] In some embodiments, a spiral groove 23 is provided on the inner wall surface of the ice-making cylinder 2, and the spiral groove 23 is configured to spirally extend along the axis OP of the ice-making cylinder 2 in a first spiral. Compared with other regions of the inner wall surface of the ice-making cylinder 2 where the spiral groove 23 is not provided, the inner wall surface of the spiral groove 23 is closer to the cooling medium in the evaporator 4. Therefore, the liquid to be frozen in the spiral groove 23 will freeze first, and then gradually freeze into the ice-making cavity 21, which is beneficial to restricting the freezing path and facilitating the cleaning of the ice by the spiral scraper 32 of the screw 3.

[0046] Along the axis OP of the ice-making cylinder 2, the cross-sectional shape of the spiral groove 23 can be triangular, or circular arc-shaped, and of course, it can also be other shapes, which can be specifically set according to needs. In some embodiments, the cross-sectional shape of the spiral groove 23 is triangular. By utilizing the characteristic that the triangle has a sharp corner, when the cooling medium transfers cold to the sharp corner of the triangular spiral groove 23, the liquid to be frozen at the sharp corner in the spiral groove 23 is more likely to freeze, which is beneficial to improving the freezing efficiency.

[0047] In some embodiments, as Figure 2 shown in Figure 3 FIG. 10, the spiral groove 23 includes a first wall surface 231 and a second wall surface 232. The first wall surface 231 and the second wall surface 232 intersect at a first intersection line 233. Taking the plane coinciding with the axis OP of the ice-making cylinder 2 as the projection plane and the direction where the axis OP of the ice-making cylinder 2 is located as the first direction X, the dimension of the positive projection of the first wall surface 231 on the projection plane in the first direction X is M1, and the dimension of the projection of the second wall surface 232 on the projection plane in the first direction X is M2, satisfying M1 > M2, M1 > 0, and M2 > 0. In this way, by setting the spiral groove 23 into an asymmetric shape, and the length of the first wall surface 231 extending from the first intersection line 233 is longer than that of the second wall surface 232, and the angle F1 between the second wall surface 232 and the straight line perpendicular to the axis OP of the ice-making cylinder 2 is greater than the angle F2 between the first wall surface 231 and the straight line perpendicular to the axis OP of the ice-making cylinder 2, when the ice in the spiral groove 23 is scraped by the spiral scraper 32, the direction of the resultant force of the force exerted by the first wall surface 232 on the ice and the force exerted by the blade surface of the spiral scraper 32 on the ice is along the axial direction of the rod body 31, so as to achieve the purpose of pushing the ice to move, which is beneficial to the spiral scraper 32 to better scrape off the ice generated in the spiral groove 23, thereby further improving the ice-making efficiency.

[0048] In some embodiments, as Figure 2 shown in Figure 3As shown, along the direction in which the spiral scraper 32 spirally extends, the angle between the second wall surface 232 and the axis OP of the ice making cylinder 2 is A, satisfying 80° ≤ A ≤ 90°. That is to say, the second wall surface 232 is approximately perpendicular to the rod body 31 of the screw 3, which is beneficial for the second wall surface 232 to provide a supporting force for the ice generated in the spiral groove 23, so that the screw 3 can better push the ice growing from the spiral groove 23 into the ice making cavity 21, which is beneficial to improving the ice making effect.

[0049] In some embodiments, as Figure 2-4 shown, the ice making cylinder 2 includes a first connecting seat 2a, a cylinder body 2b and a second connecting seat 2c. The first connecting seat 2a and the second connecting seat 2c are respectively connected to opposite ends of the cylinder body 2b. The first connecting seat 2a is provided with a plurality of first connecting holes 201 distributed at intervals, and the second connecting seat 2c is provided with a plurality of second connecting holes 202 distributed at intervals. The plurality of first connecting holes 201 and the plurality of second connecting holes 202 are both used for connection to fix the cylinder body 2b at the required position. Among them, the cylinder body 2b is provided with a spiral groove 23, an ice making cavity 21, a liquid inlet 24 and an installation opening 22. The liquid inlet 24 and the installation opening 22 are both communicated with the ice making cavity 21. The liquid inlet 24 is used to introduce the liquid to be frozen into the cylinder body 2b. The liquid to be frozen can be tap water, sugar water or other liquids as long as they can be condensed.

[0050] In some embodiments, please refer to again Figure 2 , the spiral scraper 32 of the screw 3 spirally ascends along the axis of the rod body 31, and the reverse direction of the spiral ascent of the spiral scraper 32 is opposite to the ascending direction of the spiral groove 23. In this way, it is beneficial for the spiral scraper 32 to contact the ice extending from the spiral groove 23 to improve the scraping of the ice growing from the spiral groove 23 by the spiral scraper 32.

[0051] In some embodiments, as Figure 5 shown, the evaporator 4 includes a container body 41, a first delivery pipe 42 and a second delivery pipe 43. The first delivery pipe 42 and the second delivery pipe 43 are both communicated with the container body 41. The container body 41 is sleeved on the ice making cylinder 2 and is provided with a chamber for accommodating a cooling medium. Among them, one of the first delivery pipe 42 and the second delivery pipe 43 is used to input the cooling medium into the chamber of the container body 41, and the other is used to output the cooling medium from the chamber of the container body 41. In this way, during use, the cooling medium can be conveyed through one of the first delivery pipe 42 and the second delivery pipe 43, and the cooling medium transfers cold to the liquid to be frozen flowing along the inner wall surface of the ice making cylinder 2 through the wall thickness of the ice making cylinder 2, so as to achieve the purpose of freezing the liquid to be frozen.

[0052] In some embodiments, as Figure 5As shown, the first delivery pipe 42 is configured to introduce a cooling medium into the container body 41, and the second delivery pipe 43 is configured to deliver the cooling medium in the container body 41 to the outside. Moreover, the first delivery pipe 42 is closer to the ice outlet end 25 of the ice making cylinder 2 than the second delivery pipe 43. Thus, during use, the cooling medium needs to overcome gravity and gradually be delivered from the first delivery pipe 42 to the second delivery pipe 43. Compared with the method of introducing the cooling medium from the second delivery pipe 43 and then sending it out from the first delivery pipe 42, it avoids the direct flow of the cooling medium to the first delivery pipe 42 under the action of gravity, which is beneficial to prolonging the residence time of the cooling medium in the container body 41 and enhancing the refrigeration effect.

[0053] In some other embodiments, as Figure 5-6 shown, the evaporator 4 further includes a guide vane 44. The guide vane 44 is disposed in the container body 41 and is configured to helically extend along the axis OP of the ice making cylinder 2 in a second helix. The first helix is parallel to the second helix. Among them, the guide vane 44, the container body 41 and the outer wall surface of the ice making cylinder 2 construct a spiral channel 401. Along the direction perpendicular to the axis OP of the ice making cylinder 2, the projection of the spiral groove 23 is located in the spiral channel 401. The spiral channel 401 is used to constrain the cooling medium to move along a preset path. Thus, under the action of the guide vane 44, it is beneficial to constrain the cooling medium to be delivered along the spiral channel 401, enabling the cooling medium to uniformly transfer cold to the spiral groove 23, which is beneficial to guiding the ice formed by freezing in the ice making cylinder 2 to first generate from the spiral groove 23 and then extend into the ice making cavity 21, that is, it plays a role in constraining the growth of ice in the ice making cylinder 2, which is beneficial for the spiral scraper 32 of the screw 3 to timely scrape the ice generated from the spiral groove 23, reducing the risk of the produced ice adhering to the spiral scraper 32 and improving the ice making effect. It should be noted here that the first helix and the second helix being parallel means that the helices of the two are spaced a preset distance along the axis OP of the ice making cylinder 2 and do not intersect, that is, the helix directions and pitches of the two helices are the same.

[0054] The inventors of the present application have found through research that the relative position between the spiral groove 23 and the spiral channel 401 will also affect the freezing result of some of the liquid to be frozen in the spiral groove 23. This is because in the axial direction of the ice making cylinder 2 (i.e., Figure 7 the first direction X shown in), when the first intersection line 233 of the spiral groove 23 is located above or below the position of the spiral channel 401, it will make the cold transferred from the cooling medium in the spiral channel 401 to the spiral groove 23 uneven, resulting in different freezing efficiencies of the liquid to be frozen in the spiral groove 23.

[0055] Therefore, the inventors of the present application have made design requirements for the relative position between the spiral groove 23 and the spiral channel 401 to improve the freezing efficiency of the liquid to be frozen in the spiral groove 23. Specifically, asFigure 6-7 As shown, the flow guiding piece 44 includes a first surface 441 and a second surface 442 oppositely arranged along the first direction X. The perpendicular distance between the first intersection line 233 and the first surface 441 in the first direction X is d1, and the perpendicular distance between the first intersection line 233 and the second surface 442 in the first direction X is d2, satisfying d1 = d2, and d1 > 0, d2 > 0. In other words, the first intersection line 233 of the spiral groove 23 is located at the middle position of the spiral channel 401, so that the liquid to be frozen in the spiral channel 401 can uniformly receive the cold quantity transferred by the cooling medium and freeze.

[0056] In some embodiments, referring again to Figure 2 , the refrigeration device further includes a liquid supply tank 5. The liquid supply tank 5 is sleeved on the ice making cylinder 2. The liquid supply tank 5 is provided with a liquid infusion port 501, and the liquid infusion port 501 is communicated with the liquid inlet 24. The distance between the liquid infusion port 501 and the ice outlet end 25 of the ice making cylinder 2 is less than the distance between the liquid inlet 24 and the ice outlet end 25 of the ice making cylinder 2. In other words, the height of the liquid inlet 24 from the ground is higher than the height of the liquid infusion port 501 from the ground. Thus, the bubbles floating on the liquid surface of the liquid to be frozen introduced into the liquid supply tank 5 can be sent into the ice making cavity 21 as the water level rises and the liquid flows, reducing the risk of bubbles existing on the liquid surface in the liquid supply tank 5. It should be noted here that the distance between the liquid infusion port 501 and the ice outlet end 25 of the ice making cylinder 2 refers to the distance between the central axis of the liquid infusion port 501 and the ice outlet end 25 of the ice making cylinder 2. Similarly, the distance between the liquid inlet 24 and the ice outlet end 25 of the ice making cylinder 2 refers to the distance between the central axis of the liquid inlet 24 and the ice outlet end 25 of the ice making cylinder 2.

[0057] In some embodiments, as Figure 4 shown in Figure 7 , the refrigeration device further includes a cylinder cover 6. The cylinder cover 6 is connected to the ice outlet end 25 of the ice making cylinder 2. Among them, the cylinder cover 6 is provided with an ice extrusion hole 61. The ice extrusion hole 61 is used to extrude the broken ice conveyed to the ice outlet end 25 along the axis OP of the ice making cylinder 2, so that the broken ice forms a preset shape under the common extrusion of the ice extrusion hole 61 and the screw 3 and is sent out of the ice making cylinder 2. In this embodiment, the caliber of one end of the ice extrusion hole 61 close to the ice making cavity 21 is C1, and the caliber of the end of the ice extrusion hole 61 far from the ice making cavity 21 is C2, satisfying C1 > C2. Thus, when the broken ice enters the ice extrusion hole 61 from the end close to the ice making cavity 21 of the ice extrusion hole 61, due to the reduction of the aperture of the ice extrusion hole 61, the broken ice will gradually be mutually extruded into a preset shape in the ice extrusion hole 61 and gradually be sent out of the ice extrusion hole 61 under the pushing of the blade surface of the spiral scraper 32. The shape of the ice extrusion hole 61 can be set according to needs. For example, it can be in a trumpet shape, or it can be in a cylindrical shape. Of course, it can also be other shapes. The number of the ice extrusion holes 61 can be two, three, four or more than four, and can be specifically set according to needs.

[0058] In some embodiments, as Figure 4 shown, the cylinder cover 6 is further provided with an insertion port 62 for installing the rod body 31 of the screw rod 3, so that the insertion port 62 and the installation port 22 jointly constrain the screw rod 3 within the ice-making cylinder 2. Among them, the central lines of the insertion port 62 and the installation port 22 are on the same straight line. In this way, it is beneficial for the axis OP of the ice-making cylinder 2 to coincide with the axis of the screw rod 3, ensuring that the screw rod 3 and the ice-making cylinder 2 are coaxially arranged. In this embodiment, the insertion port 62 is provided at the center of a plurality of ice-squeezing holes 61, that is, a plurality of ice-squeezing holes 61 are arranged annularly around the insertion port 62.

[0059] In some embodiments, as Figure 2 shown, the ice-making cylinder 2 further includes a sealing assembly 7. The sealing assembly 7 is arranged at one end of the screw rod 3 and close to the installation port 22. The sealing assembly 7 is used for sealingly connecting the screw rod 3 and the ice-making cylinder 2 to prevent the liquid to be frozen from leaking out of the ice-making cavity 21 through the gap between the screw rod 3 and the installation port 22 during the handling of the ice-making device 1. In this embodiment, the sealing assembly 7 includes a first sealing plug 71, a second sealing plug 72 and an elastic member 73. The two ends of the elastic member 73 respectively abut against the first sealing plug 71 and the second sealing plug 72. The first sealing plug 71 abuts against the protrusion provided on the rod body 31, and the second sealing plug 72 abuts against the installation port 22. Under the elastic abutting action of the elastic member 73, the second sealing plug 72 can fill the gap between the rod body 31 and the ice-making cylinder 2 at the installation port 22 to achieve the purpose of sealing.

[0060] Furthermore, as Figure 2 shown, the sealing assembly 7 further includes a first sealing pressing sheet 74 and a second sealing pressing sheet 75. The first sealing pressing sheet 74 is arranged annularly around the first sealing plug 71, and the second sealing pressing sheet 75 is arranged annularly around the second sealing plug 72. And the two ends of the elastic member 73 respectively abut against the first sealing pressing sheet 74 and the second sealing pressing sheet 75. In this way, under the action of the first sealing pressing sheet 74 and the second sealing pressing sheet 75, it is beneficial for the first sealing plug 71 and the second sealing plug 72 to be uniformly pressed, avoiding the influence on the sealing performance due to uneven pressing of the first sealing plug 71 and the second sealing plug 72.

[0061] The ice-making device 1 provided in the embodiment of the present application comprises an ice-making cylinder 2, a screw 3 and an evaporator 4. The ice-making cylinder 2 is provided with an ice-making cavity 21 and an installation port 22 which are connected to each other. The inner wall surface of the ice-making cylinder 2 is provided with a spiral groove 23, and the spiral groove 23 is configured to extend spirally along the axis OP of the ice-making cylinder 2 in a first spiral line. The screw 3 comprises a connected rod body 31 and a spiral scraper 32, the rod body 31 is installed in the installation port 22, the spiral scraper 32 extends spirally along the axis of the rod body 31 and is located in the ice-making cavity 21, and the spiral scraper 32 is used to scrape off ice generated in the spiral groove 23. The evaporator 4 is sleeved on the ice-making cylinder 2, and the evaporator 4 is provided with a chamber for accommodating a cooling medium. The ice-making cylinder 2 is provided with a liquid inlet 24 connected to the ice-making chamber 21, and the liquid inlet 24 is arranged away from the ice outlet end 25 of the ice-making cylinder 2. In the direction perpendicular to the axis OP of the ice-making cylinder 2, the diameter of the end of the liquid inlet 24 close to the ice-making chamber 21 is larger than the diameter of the end of the liquid inlet 24 away from the ice-making chamber 21. In this way, when in use, the flow rate of the liquid to be frozen passing through the liquid inlet 24 into the ice-making chamber 21 can be reduced, so that the liquid to be frozen flows along the inner wall surface of the ice-making chamber 21 under the action of the Coanda effect to form a liquid film of a predetermined thickness, and forms an ice film of a predetermined thickness under the freezing of the cooling medium passed into the evaporator 4, which facilitates the spiral scraper 32 of the screw 3 to scrape ice in time, and avoids the screw 3 from being immersed in the liquid to be frozen, reduces the risk of abnormal operation of the screw 3, and is conducive to improving the stability of the ice-making device 1.

[0062] like Figure 8 As shown, another embodiment of the present application provides an ice-making machine 100, which includes the ice-making device 1 in the above embodiment. The ice-making machine 100 also includes a housing 20, and the ice-making device 1 is installed in the housing 20.

[0063] In some embodiments, the structure of the ice-making device can refer to the structure of the ice-making device 1 in the above embodiment, that is, it includes the ice-making cylinder 2, the screw 3 and the evaporator 4 in the above embodiment, and the ice-making cylinder 2 is provided with a connected ice-making chamber 21 and a mounting port 22. The screw 3 includes a rod body 31 and a spiral scraper 32 connected to each other, the spiral scraper 32 spirally extends along the axis of the rod body 31 and is located in the ice-making chamber 21, the rod body 31 is installed in the mounting port 22, and the spiral scraper 32 is used to scrape off the ice generated from the spiral groove 23 toward the ice-making chamber 21. The evaporator 4 is sleeved on the ice-making cylinder 2, and the evaporator 4 is used to accommodate the cooling medium that transfers cold to the ice-making chamber. Among them, the ice-making cylinder 2 is provided with a liquid inlet 24 connected to the ice-making chamber 21, and the liquid inlet 24 is arranged away from the ice outlet end 25 of the ice-making cylinder 2, and in the direction perpendicular to the axis OP of the ice-making cylinder 2, the diameter of the end of the liquid inlet 24 close to the ice-making chamber 21 is larger than the diameter of the end of the liquid inlet 24 away from the ice-making chamber 21.

[0064] Thus, since the diameter of the liquid inlet 24 increases in the direction towards the inside of the ice-making chamber 21, the flow rate of the liquid to be frozen entering the ice-making chamber 21 through the liquid inlet 24 will become smaller, causing the liquid to be frozen to flow along the inner wall surface of the ice-making chamber 21 under the action of the Coanda effect to form a liquid film with a predetermined thickness, and will freeze into an ice film with a preset thickness under the freezing of the cooling medium introduced into the evaporator 4, facilitating the timely ice scraping by the spiral blade 32 of the screw 3, and preventing the screw 3 from being immersed in the liquid to be frozen, reducing the risk of abnormal operation of the screw 3, being beneficial to the stable ice-making of the ice-making device 1, and improving the stability of the operation of the ice maker 100.

[0065] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. An ice making device, characterized in that, Comprising: An ice-making cylinder, provided with a communicating ice-making cavity and an installation port; A screw, including a connected rod body and a spiral scraper, the rod body being installed in the installation port, the spiral scraper spirally extending along the axis of the rod body and located in the ice-making cavity, the spiral scraper being used for scraping the ice generated in the ice-making cavity; An evaporator, sleeved on the ice-making cylinder, the evaporator being used for containing a cooling medium that transfers cold to the ice-making cavity; Wherein, the ice-making cylinder is provided with a liquid inlet communicating with the ice-making cavity, and the liquid inlet is arranged away from the ice outlet end of the ice-making cylinder. In the direction perpendicular to the axis of the ice-making cylinder, the diameter of the end of the liquid inlet close to the ice-making cavity is larger than the diameter of the end of the liquid inlet far from the ice-making cavity.

2. The ice-making device according to claim 1, wherein The number of the liquid inlets is multiple, and the multiple liquid inlets are arranged at intervals and annularly arranged around the ice-making cavity.

3. The ice-making device according to claim 1, wherein, The shape of the liquid inlet includes a frustum of a cone, a frustum of an ellipse or a prism.

4. The ice-making device according to any one of claims 1-3, characterized in that, The inner wall surface of the ice-making cylinder is provided with a spiral groove, and the spiral groove is configured to spirally extend along the axis of the ice-making cylinder with a first spiral line.

5. The ice-making device according to claim 4, wherein, The spiral groove includes a first wall surface and a second wall surface, the first wall surface and the second wall surface intersect at a first intersection line. Taking the plane coinciding with the axis of the ice-making cylinder as the projection plane and the direction where the axis of the ice-making cylinder is located as the first direction, the dimension of the positive projection of the first wall surface on the projection plane in the first direction is M1, and the dimension of the positive projection of the second wall surface on the projection plane in the first direction is M2, satisfying M1 > M2.

6. The ice-making device according to claim 4, characterized in that The evaporator includes a container body, a first delivery pipe and a second delivery pipe, both the first delivery pipe and the second delivery pipe communicate with the container body, the container body is sleeved on the ice-making cylinder. Wherein, one of the first delivery pipe and the second delivery pipe is used for inputting a cooling medium into the container body, and the other is used for outputting the cooling medium from the container body.

7. The ice-making device according to claim 6, characterized in that, The evaporator further includes a guide vane, the guide vane is arranged in the container body, the guide vane is configured to spirally extend along the axis of the ice-making cylinder with a second spiral line, the first spiral line is parallel to the second spiral line. Wherein, the guide vane, the container body and the outer wall surface of the ice-making cylinder construct a spiral channel. Along the direction perpendicular to the axis of the ice-making cylinder, the projection of the spiral groove is located in the spiral channel, and the spiral channel is used for restricting the cooling medium to move along a preset path.

8. The ice making device according to claim 7, characterized in that, The spiral groove includes a first wall surface and a second wall surface, the first wall surface and the second wall surface intersect at a first intersection line. Taking the direction where the axis of the ice-making cylinder is located as the first direction, the guide vane includes a first surface and a second surface oppositely arranged along the first direction. The perpendicular distance between the first intersection line and the first surface in the first direction is d1, and the perpendicular distance between the first intersection line and the second surface in the first direction is d2, satisfying d1 = d2, and d1 > 0, d2 > 0.

9. The ice-making device according to claim 1, wherein The ice making device further includes a liquid supply tank, the liquid supply tank is sleeved on the ice making cylinder, the liquid supply tank is provided with a liquid infusion port, and the liquid infusion port is communicated with the liquid inlet. Wherein, the distance between the liquid infusion port and the ice outlet end of the ice making cylinder is less than the distance between the liquid inlet and the ice outlet end of the ice making cylinder.

10. The ice-making device according to claim 1, characterized in that, It further includes a cylinder cover, the cylinder cover is connected to the ice outlet end of the ice making cylinder, the cylinder cover is provided with an ice squeezing hole, the diameter of one end of the ice squeezing hole close to the ice making cavity is C1, and the diameter of the end of the ice squeezing hole far from the ice making cavity is C2, satisfying C1 > C2.

11. An ice maker, characterized in that, It includes the ice making device according to any one of claims 1-10.

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