Evaporator for extrusion type ice maker

Abstract

The utility model provides an evaporator for an extrusion type ice maker, which comprises a base, an inner pipe which is connected with the base in a matching manner, is hollow inside and is provided with a water inlet, an outer pipe which is sleeved outside the inner pipe and is provided with a refrigerant inlet and a refrigerant outlet, a screw rod positioned in the inner pipe, and a spiral guide piece positioned between the inner pipe and the outer pipe, wherein the spiral guide piece can be integrated or formed by splicing a plurality of single spiral sheets. The evaporator has the advantages that refrigerants can orderly flow along the spiral channel in a closed cavity formed by the spiral guide piece, the upper end cover, the lower end cover, the inner pipe and the outer pipe, so that heat exchange surfaces of the inner pipe wall of the evaporator are evenly distributed, the ice making process is rapid and smooth, and accumulated ice blocks are prevented from blocking an ice outlet channel.

Description

TECHNICAL FIELD

[0001] The utility model relates to ice maker technical field especially is related to a kind of evaporator for extrusion ice maker. BACKGROUND

[0002] The evaporator used by the existing extrusion ice maker is generally two kinds of coiled tube evaporator and immersion evaporator.The coiled tube evaporator is tightly wound with copper tube outside inner tube, and then the copper tube and inner tube are welded, and the advantages of coiled tube evaporator are as follows: the refrigerant flows along the copper tube, and the boiling heat absorption process is relatively uniform;The disadvantages of coiled tube evaporator are as follows: 1) the gap of copper tube and inner tube during winding is difficult to control;2) refrigerant and water are separated by a layer of copper tube and a layer of inner tube, and the distance is far, which affects the refrigerant heat exchange effect.The immersion evaporator, the inner tube and the outer tube are stainless steel pipes, and the advantages are as follows: the refrigerant and water are separated by a layer of inner tube, and the boiling heat exchange effect is good;The disadvantages of immersion evaporator are as follows: 1) the outer tube needs to be shrunk at both ends, and the size of the shrunk tube is difficult to control, which needs secondary processing;2) the refrigerant boiling heat absorption process in the closed cylindrical cavity formed by welding the inner and outer tubes cannot be effectively controlled, and the boiling heat exchange area is uneven, which causes the ice layer to be too thick in some places, and the ice outlet is blocked after a period of accumulation.Similar technology can refer to Chinese invention patent CN111238105A, so it is necessary to improve. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing an evaporator for extrusion ice maker, which can effectively solve the above technical problems, and can make the refrigerant flow orderly along the spiral channel in the closed cavity formed by the spiral guide, the upper and lower end covers and the inner and outer tubes, so that the inner tube wall heat exchange surface of the evaporator is evenly distributed, the ice making process is fast and smooth, and the accumulated ice blocks are prevented from blocking the ice outlet channel.

[0004] To achieve the purpose of the utility model, the utility model provides the following technical scheme: an evaporator for extrusion ice maker, which comprises a base, an inner tube connected with the base and having a water inlet, an outer tube sleeved outside the inner tube and having a refrigerant inlet and a refrigerant outlet, a screw located in the inner tube, and a spiral guide located between the inner tube and the outer tube.

[0005] On the basis of the above technical scheme, the following subsidiary technical schemes are further included:

[0006] The refrigerant outlet is located above the refrigerant inlet, and the refrigerant inlet and the water inlet are arranged adjacent to each other.

[0007] The shaper is arranged in the inner tube and sleeved on one end of the screw rod, the spline connecting shaft is matched with the other end of the screw rod, the mechanical seal dynamic ring is arranged adjacent to the spline connecting shaft and sleeved on the screw rod, and the mechanical seal static ring is located between the mechanical seal dynamic ring and the spline connecting shaft and arranged on the base.

[0008] The first end cover is arranged adjacent to the refrigerant inlet and welded on one end of the outer tube, and the second end cover is arranged adjacent to the refrigerant outlet and welded on the other end of the outer tube.

[0009] The pitch of the screw rod is 2-10 times of the pitch of the spiral guide.

[0010] The shaper comprises a plurality of ice making outlets arranged circumferentially, a plurality of radial ribs arranged between circumferential positions of adjacent two ice making outlets, and a shaper center hole located at the center and allowing the one end of the screw rod to pass through.

[0011] The spiral guide is a spiral-shaped flat steel sheet allowing the refrigerant to flow through.

[0012] The radial width of the spiral-shaped flat steel sheet of the spiral guide is the same as the gap between the inner tube and the outer tube.

[0013] The diameter of the outer tube is 1.2-3 times of the diameter of the inner tube, and the axial length of the outer tube is less than the axial length of the inner tube.

[0014] The motor is fixed to the bottom or the top of the screw rod and used for driving the screw rod to rotate.

[0015] The beneficial effects of the utility model are as follows: the refrigerant can orderly flow along the spiral channel in the closed cavity formed by the spiral guide, the upper and lower end covers, the inner tube and the outer tube, the evaporator inner tube wall heat exchange surface is uniformly distributed, the ice making process is rapid and smooth, and accumulated ice blocks are prevented from blocking the ice outlet channel. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings are used to provide further understanding of the utility model, constitute a part of the specification, are used together with the embodiments of the utility model to explain the utility model, and do not constitute the limitation on the utility model.

[0017] Figure 1 It is the front view of the utility model;

[0018] Figure 2 It is the perspective view of the utility model under the first visual angle;

[0019] Figure 3 It is the perspective view of the utility model under the second visual angle;

[0020] Figure 4The sectional view of the utility model;

[0021] Figure 5 The exploded view of the utility model. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, the following will be combined with the technical scheme in the utility model embodiment to make clear and complete description, obviously, the described embodiment is part of the utility model, rather than all the embodiments.

[0023] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "transverse", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the protection scope of the utility model. When a component is referred to as "fixed to" another component, it can be directly on the other component or there can be a middle component. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there can be a middle component. When a component is referred to as "provided on" another component, it can be directly provided on the other component or there can be a middle component. The terms "vertical", "horizontal", "left", "right" and the like used in this paper are only for the purpose of illustration.

[0024] Embodiment: as Figures 1-5 The utility model discloses an embodiment of evaporimeter for extrusion type ice maker, it includes: base 100, with the base 100 cooperation and connection and inside hollow and have water inlet 280's inner tube 200, the outer tube 300 of setting in the outer tube 200 outside and having refrigerant import 340 and refrigerant export 360, the first end cover 384 of being located outer tube 300 one end and welding connection, the second end cover 388 of being located another end and welding connection, the screw rod 400 of being located in inner tube 200, the spiral guide 500 of being located between inner tube 200 and outer tube 300 and for, setting in inner tube 200 and setting in the one end of screw rod 400's shaper 600, with the spline connection shaft 480 of cooperation of screw rod 400 another end, with spline connection shaft 480 adjacent setting and setting on screw rod 400's mechanical seal dynamic ring 460, and the mechanical seal static ring 470 of being located between mechanical seal dynamic ring 460 and spline connection shaft 480 and setting on base 100. Wherein mechanical seal dynamic ring 460 and mechanical seal static ring 470 jointly form seal.

[0025] The base 100 is a circular platform with multiple steps, and its one end is small and the other end is large, its inside is hollow and allows the screw rod 400 to pass through, its large end is provided with an adapter chamber of the spline connection shaft 480, and its small end is used for accommodating the mechanical seal static ring 470 and is located in the inner tube 200.

[0026] The inner tube 200 is a hollow cylindrical shape, and its diameter is smaller than that of the outer tube 300, and its axial length is greater than that of the outer tube 300. The inner tube 200 has an inner tube cavity 220 for accommodating the screw rod 400 and the shaper 600.

[0027] The diameter of the outer tube 300 is 1.2-3 times the diameter of the inner tube 200. The inner tube 300 is hollow inside and has an outer tube cavity 320 for accommodating the inner tube 200 and the spiral guide 500. The axial length of the outer tube 300 is less than the axial length of the inner tube 200. The refrigerant outlet 360 is located above the refrigerant inlet 340, and the refrigerant inlet 340 is arranged adjacent to the water inlet 280. The two ends of the outer tube 300 are closed by the first end cover 384 and the second end cover 388, wherein the first end cover 384 is arranged adjacent to the refrigerant inlet 340, and the second end cover 388 is arranged adjacent to the refrigerant outlet 360.

[0028] The screw rod 400 is small at both ends and large in the middle, and the middle is surrounded by a spiral part 440, and the central axis direction of the screw rod 400 coincides with the central axis direction of the inner tube 200, and further coincides with the central direction of the base 100.

[0029] The spiral guide 500 is a spiral-shaped flat steel sheet that allows refrigerant to flow through, thereby forming a regular channel for refrigerant flow. The spiral-shaped flat steel sheet of the spiral guide 500 has a radial width that is the same as the gap between the inner tube 200 and the outer tube 300. The pitch of the spiral part 440 of the screw rod 400 is 2-10 times the pitch of the spiral guide 500.

[0030] The shaper 600 includes a plurality of ice making outlets 604 arranged circumferentially, a plurality of radial ribs 606 located between the circumferential directions of the adjacent two ice making outlets 604, and a shaper center hole 608 located at the center and allowing one end of the screw rod 400 to pass through.

[0031] The embodiment also includes a bottom motor 720 fixed to the bottom of the screw rod 400 and used to drive the screw rod 400 to rotate, or a top motor 740 fixed to the top of the screw rod 400 and used to drive the screw rod 400 to rotate, thereby adapting to different scenarios.

[0032] Since the outer tube 300 is changed to open at both ends, the spiral guide 500 can be fixed to the inner tube or the outer tube first, and then fixed with end caps at both ends. After the refrigerant enters the inner cavity of the outer tube 300 from the refrigerant inlet 340, the refrigerant can only flow orderly along the spiral channel, and the refrigerant in the closed cavity formed by the inner tube and the outer tube can not flow randomly in the cavity, which can avoid the phenomenon that the ice layer formed on the inner side of the inner tube is not uniform, and the ice layer accumulates after a period of time, causing the shaper 600 to be blocked and causing the machine to work abnormally.

[0033] The utility model has the advantages that: the refrigerant can flow orderly along the spiral channel in the closed cavity formed by the spiral guide, the upper and lower end caps, and the inner and outer tubes, the inner tube wall heat exchange surface of the evaporator is uniformly distributed, the ice making process is fast and smooth, and the accumulated ice blocks are prevented from blocking the ice outlet channel.

[0034] The above is only the preferred embodiment of the utility model, but the protection scope of the utility model is not limited to this, and any person skilled in the art can make several modifications and improvements without departing from the creative concept of the utility model, which should be covered in the protection scope of the utility model.

Claims

1. An evaporator for an extrusion ice maker, characterized in that... It includes: The base (100), the inner tube (200) which is connected to the base (100) and is hollow inside and has a water inlet (280), the outer tube (300) which is sleeved on the outside of the inner tube (200) and has a refrigerant inlet (340) and a refrigerant outlet (360), the screw (400) located inside the inner tube (200), and the spiral guide (500) located between the inner tube (200) and the outer tube (300).

2. The evaporator for an extrusion-type ice maker according to claim 1, characterized in that: The refrigerant outlet (360) is located above the refrigerant inlet (340), and the refrigerant inlet (340) is arranged adjacent to the water inlet (280).

3. The evaporator for an extrusion-type ice maker according to claim 2, characterized in that... It also includes a shaper (600) disposed in the inner tube (200) and sleeved on one end of the screw (400), a spline connecting shaft (480) that mates with the other end of the screw (400), a mechanical seal rotating ring (460) disposed adjacent to the spline connecting shaft (480) and sleeved on the screw (400), and a mechanical seal rotating ring (460) located between the mechanical seal rotating ring (460) and the spline connecting shaft (480) and disposed on the base (100).

4. The evaporator for an extrusion-type ice maker according to claim 1, 2, or 3, characterized in that... It also includes a first end cap (384) located at one end of the outer tube (300) and welded together, and a second end cap (388) located at the other end of the outer tube and welded together, wherein the first end cap (384) is disposed adjacent to the refrigerant inlet (340), and the second end cap (388) is disposed adjacent to the refrigerant outlet (360).

5. The evaporator for an extrusion-type ice maker according to claim 4, characterized in that: The pitch of the screw (400) is 2-10 times the pitch of the helical guide (500).

6. The evaporator for an extrusion-type ice maker according to claim 3, characterized in that: The shaper (600) includes a plurality of ice-making outlets (604) arranged circumferentially, a plurality of radial ribs (606) located circumferentially between two adjacent ice-making outlets (604), and a shaper center hole (608) located at the center and allowing one end of the screw (400) to pass through.

7. The evaporator for an ice maker according to claim 6, characterized in that: The spiral guide (500) is a spiral-shaped flat steel sheet that allows refrigerant to flow through.

8. The evaporator for an extrusion ice maker according to claim 7, characterized in that: The radial width of the spiral-shaped flat steel sheet of the spiral guide (500) is the same as the gap between the inner tube (200) and the outer tube (300).

9. The evaporator for an extrusion ice maker according to claim 4, characterized in that: The diameter of the outer tube (300) is 1.2-3 times the diameter of the inner tube (200); the axial length of the outer tube (300) is less than the axial length of the inner tube (200).

10. The evaporator for an extrusion-type ice maker according to claim 4, characterized in that... It also includes a motor fixed to the bottom or top of the screw (400) and used to drive the screw (400) to rotate.

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