Rotary dynamic ice maker separated by mechanical torsion

Abstract

The rotary dynamic ice maker comprises an ice making groove, a refrigerating machine and a power unit, the ice making groove is provided with a storage cavity and a bottom groove which are communicated with each other, a sealing bearing is embedded in the bottom groove, a rotating plate is installed in the sealing bearing, a hole is formed in the middle of the rotating plate, and a heat conduction block matched with the hole in shape is installed in the middle of the rotating plate; a refrigerating wall surface is arranged between the refrigerating capacity output end surface of the refrigerating machine and the lower surface of the heat conduction block; the power unit is used for driving the refrigerator, the rotating plate and the heat-conducting block to synchronously rotate to separate an ice layer on the upper surface of the heat-conducting block; when the heat-conducting block rotates, the upper surface of the heat-conducting block and the bottom surface of the storage cavity have an overlapping area. Separation of ice layers is controlled in a mechanical rotation mode, the influence of thermal resistance of the ice layers on heat transfer efficiency is reduced, separation of the ice layers is achieved by means of the characteristic that the ice density is small, and the ice making efficiency is improved.

Description

Technical Field

[0001] The invention relates to an ice maker, in particular to a rotary dynamic ice maker utilizing mechanical torsion separation. Background Art

[0002] Ice storage technology can achieve peak electricity consumption, that is, ice is made during the low electricity period, the cold is stored in the form of ice, and then the cold is released during the peak electricity period. Commonly used ice-making technologies include ice ball type ice making, coil type ice making, sliding type ice making, ice crystal type ice making, etc. Taking ice ball type ice making and coil type ice making as examples, the cold energy needs to be transferred to the coolant through the ice layer on the surface. Due to the large thermal resistance of ice, the heat transfer efficiency is low; if the thickness of the surface ice layer is reduced, the cold storage effect will become worse. On the other hand, the ice layer adheres to the frozen surface and is difficult to detach. CN101818974B discloses a single-group plate ice machine hot air defrosting refrigeration system, which uses hot air for defrosting. Although the energy loss caused by this defrosting method is small, for ice storage systems that run for a long time, the loss of cold energy cannot be ignored. Summary of the invention

[0003] Purpose of the invention: The purpose of the present invention is to provide a rotary dynamic ice maker that utilizes mechanical torsion separation to achieve ice layer separation, reduce heat transfer resistance, and improve ice making efficiency without losing cooling capacity.

[0004] Technical solution: The rotary dynamic ice maker utilizing mechanical torsion separation described in the present invention comprises an ice trough, a refrigerator and a power unit. The ice trough has a storage cavity and a bottom groove which are interconnected. A sealed bearing is embedded in the bottom groove. A rotating plate is installed inside the sealed bearing. A hole is opened in the middle of the rotating plate and a heat-conducting block of a matching shape is installed thereon. The refrigerator is fixed at the bottom of the rotating plate, and a cooling wall is provided between the cold output end face of the refrigerator and the lower surface of the heat-conducting block. The power unit is used to drive the refrigerator, the rotating plate and the heat-conducting block to rotate synchronously, so that the ice layer on the upper surface of the heat-conducting block detaches and floats. When the heat-conducting block rotates, the upper surface of the heat-conducting block and the bottom surface of the storage cavity have an overlapping area.

[0005] Furthermore, the shape of the heat conducting block is elliptical or polygonal.

[0006] Furthermore, the shape of the bottom surface of the storage cavity is elliptical or polygonal, and the bottom surface of the storage cavity and the heat conducting block can be combined in different shapes.

[0007] Furthermore, the storage chamber is a multi-prism structure that is wide at the top and narrow at the bottom, so that the contact area between the ice layer and the heat conductive block is reduced, the ice layer is easier to detach, and the torque requirement of the power unit is reduced. At the same time, the ice layer can approach the inner wall of the ice making trough more quickly, shortening the time it takes for the ice layer to reach the detachment condition.

[0008] Furthermore, the upper surface of the heat conducting block is a smooth plane.

[0009] Furthermore, thermal conductive silicone grease is evenly applied between the refrigeration wall surface, the lower surface of the heat conductive block, and the cold output end surface of the refrigerator.

[0010] Furthermore, the shape of the upper surface of the refrigeration wall is the same as the shape of the heat conduction block, and the shape of the lower surface of the refrigeration wall is the same as the shape of the cold output end surface of the refrigerator.

[0011] Furthermore, the power unit adopts a stepper motor, and the output end of the stepper motor is connected to a refrigerator.

[0012] Furthermore, the rotary dynamic ice maker also includes a double-layer bracket, the ice making groove is fixed to the upper layer of the bracket, and the stepping motor is fixed to the lower layer of the bracket.

[0013] Furthermore, a sensor installation hole is provided near the bottom wall of the storage chamber, and an optical fiber ice sensor is installed in the sensor installation hole;

[0014] The cold energy generated by the refrigerator is transferred to the refrigerant in the ice-making trough through the refrigeration wall and the heat transfer block. With the continuous input of cold energy, the temperature of the refrigerant continues to decrease and ice forms on the surface of the heat transfer block. When the optical fiber ice sensor detects that the ice layer has reached a certain thickness and the edge of the ice layer is close to the inner wall of the ice-making trough, the stepper motor drives the rotating plate to rotate a certain angle, and the heat transfer block and the ice-making trough rotate relative to each other. Under the action of friction, the ice layer separates from the surface of the heat transfer block and gathers at the top of the ice-making trough under the action of buoyancy. Subsequently, the stepper motor rotates in the opposite direction by the same angle to restore the heat transfer block to its original position.

[0015] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages:

[0016] The present invention uses mechanical rotation to control the separation of the ice layer from the surface of the heat transfer block, and cleverly utilizes the low density of ice. The ice layer floats from the bottom of the ice making tank to the liquid surface under the action of buoyancy, eliminating the complex ice collection device and effectively reducing the complexity and cost of the system. During the buoyancy of the ice layer, it can exchange heat with the coolant, reduce the temperature of the coolant, and increase the freezing speed. After the ice layer is detached, the effect of the thermal resistance of the ice layer on the heat transfer efficiency can be effectively reduced, and the cold energy can be directly transferred to the coolant, thereby improving the ice making efficiency. Compared with the hot air deicing method, the present invention reduces the loss of cold energy and realizes the maximum utilization of cold energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is an exploded view of a rotary dynamic ice maker utilizing mechanical torsion disengagement provided by an embodiment of the present invention;

[0018] Figure 2 is a half-section view of a rotary dynamic ice maker according to an embodiment of the present invention;

[0019] Figure 3 is a schematic structural diagram of an ice making tank in an embodiment of the present invention;

[0020] Figure 4 is a schematic structural diagram of a rotating plate in an embodiment of the present invention;

[0021] Figure 5 It is a schematic diagram of the shape matching between the bottom surface of the storage cavity and the upper surface of the heat conductive block in an embodiment of the present invention. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Attached Figures 1 to 5 The reference numerals in the figures are as follows:

[0024] 1. ice making groove; 101. cylinder; 102. barrel; 103. bottom surface of storage cavity; 104. storage cavity; 105. sensor mounting hole; 106. mounting through hole; 2. heat conductive block; 201. upper surface of heat conductive block; 3. refrigeration wall; 4. rotating plate; 5. sealed bearing; 6. refrigerator; 7. stepper motor; 8. bracket; 9. single chip microcomputer; 10. stepper motor driver; 11. optical fiber ice sensor; 12. first fastener; 13. second fastener; 14. third fastener.

[0025] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a rotary dynamic ice maker using mechanical torsion disengagement, comprising an ice making groove 1, a heat conducting block 2, a refrigeration wall 3, a rotating plate 4, a sealing bearing 5, a refrigerator 6, a bracket 8, a single chip computer 9, a stepper motor driver 10, an optical fiber ice sensor 11 and a power unit. In this embodiment, the power unit adopts a stepper motor 7, and the bracket 8 is a double-layer structure.

[0026] Combination Figure 3 The ice making groove 1 is an integrated structure, including a cylinder 101 and a cylinder 102 coaxially connected to the bottom of the cylinder 101. The cylinder 101 has a storage cavity 104 that passes through from top to bottom. The storage cavity 104 is a multi-prism structure that is wide at the top and narrow at the bottom, which can shorten the time for the ice layer to approach the inner wall of the ice making groove 1. A sensor mounting hole 105 is provided near the bottom wall of the storage cavity 104, and the optical fiber ice sensor 11 is installed in the sensor mounting hole 105. The inner diameter of the cylinder 102 is smaller than the diameter of the cylinder 101, thereby forming a bottom groove of the ice making groove 1. A plurality of mounting through holes 106 are evenly distributed along the circumference of the cylinder 102, which are used to fix the ice making groove 1 to the upper layer of the bracket 8 through the first fastener 12.

[0027] The diameter of the sealing bearing 5 is the same as the inner diameter of the cylinder 102, and the sealing bearing 5 is embedded in the groove at the bottom of the ice making tank 1. The installation method is not limited, for example, it can be welded or connected with a sealant. Figure 4 The rotating plate 4 is circular, and its outer diameter is the same as the inner diameter of the sealed bearing 5. The rotating plate 4 is installed inside the sealed bearing 5. The installation method is not limited, for example, it can be welded or connected with a sealant. A hole is opened in the middle of the rotating plate 4 and a heat-conducting block 2 of a matching shape is installed. The installation method is not limited, for example, it can be welded or connected with a sealant. The upper and lower surfaces of the rotating plate 4 and the heat-conducting block 2 are flush. The shape of the hole in the middle of the rotating plate 4 is elliptical or polygonal, and correspondingly, the shape of the heat-conducting block 2 is also elliptical or polygonal. Blind hole threads are set on both sides of the rotating plate 4. The heat-conducting block 2 adopts an aluminum block or a copper block with good thermal conductivity, and the upper surface 201 of the heat-conducting block is a smooth plane, which is convenient for the detachment of the ice layer.

[0028] Combination Figure 5 The shape of the storage cavity bottom surface 103 is elliptical or polygonal. The storage cavity bottom surface 103 and the heat conductive block 2 can adopt different shape combinations and meet the following conditions: when the heat conductive block 2 rotates, the heat conductive block upper surface 201 and the storage cavity bottom surface 103 have an overlapping area.

[0029] The cooling wall surface 3 is arranged at the bottom of the heat conducting block 2, and the refrigerator 6 is fixed to the bottom of the rotating plate 4 by the second fastener 13, so as to ensure that the refrigerator 6 rotates synchronously with the rotating plate 4. The upper surface shape of the cooling wall surface 3 is the same as that of the heat conducting block 2, and the lower surface shape of the cooling wall surface 3 is the same as that of the cold output end surface of the refrigerator 6, so as to ensure that the cold generated by the refrigerator 6 is transferred to the heat conducting block 2 to the maximum extent. In addition, thermal conductive silicone grease is evenly applied between the cooling wall surface 3 and the lower surface of the heat conducting block 2 and the cold output end surface of the refrigerator 6.

[0030] The stepper motor 7 is fixed to the lower layer of the bracket 8 by a third fastener 14 , and the output end of the stepper motor 7 is connected to the refrigerator 6 .

[0031] The single chip microcomputer 9 is electrically connected to the optical fiber ice sensor 11 , and the stepper motor driver 10 is electrically connected to the single chip microcomputer 9 and the stepper motor 7 , respectively.

[0032] As ice crystals continue to grow during the ice-making process, the thickness of the ice layer continues to thicken, resulting in an increase in the thermal resistance between the liquid part and the heat exchange surface, which in turn deteriorates the heat transfer process and results in low overall efficiency. The present invention uses mechanical rotation to control the separation of the ice layer, effectively reducing the impact of the ice layer's thermal resistance on the heat transfer efficiency. At the same time, the low density of ice is cleverly utilized to achieve the separation of the ice layer, and the cold is directly transferred to the refrigerant, thereby improving the ice-making efficiency.

[0033] The working process of the rotary dynamic ice making machine provided by the embodiment of the present invention is as follows:

[0034] First, the cold energy generated by the refrigerator 6 is transferred to the refrigerant in the ice-making trough 1 through the refrigeration wall 3 and the heat-conducting block 2; as the cold energy is continuously input, the temperature of the refrigerant continues to decrease and ice forms on the surface of the heat-conducting block 2; the optical fiber ice sensor 11 senses the thickness of the ice layer in the ice-making trough 1 and transmits the signal to the single-chip computer 9.

[0035] When the optical fiber ice sensor 11 detects that the ice layer has reached a certain thickness and the edge of the ice layer is close to the inner wall of the ice-making trough 1, the optical fiber ice sensor 11 converts the optical signal into an electrical signal and transmits it to the single-chip microcomputer 9. The stepper motor driver 10 controls the stepper motor 7 to drive the rotating plate 2 to rotate a certain angle, and the heat conductive block 2 and the ice-making trough 1 undergo relative rotational motion. Under the action of friction, the ice layer separates from the surface of the heat conductive block 2; after the ice layer separates, it gathers at the top of the ice-making trough 1 under the action of buoyancy; after the ice layer detaches, the stepper motor controller 10 controls the stepper motor 7 to rotate in the opposite direction by the same angle, and the heat conductive block 2 and the ice-making trough 1 restore their initial relative positions.

Claims

1. A rotary dynamic ice maker utilizing mechanical torsion disengagement, characterized in that: The invention comprises an ice making groove (1), a refrigerator (6) and a power unit. The ice making groove (1) has a storage cavity (104) and a bottom groove which are interconnected. A sealing bearing (5) is embedded in the bottom groove. A rotating plate (4) is installed inside the sealing bearing (5). A hole is opened in the middle of the rotating plate (4) and a heat conducting block (2) of a matching shape is installed. The refrigerator (6) is fixed at the bottom of the rotating plate (4). A cooling wall (3) is arranged between the cold output end surface of the refrigerator (6) and the lower surface of the heat conducting block (2). The power unit is used to drive the refrigerator (6), the rotating plate (4) and the heat conducting block (2) to rotate synchronously, so that the ice layer on the upper surface (201) of the heat conducting block is detached and floats up. When the heat conducting block (2) rotates, the upper surface (201) of the heat conducting block and the bottom surface (103) of the storage cavity have an overlapping area.

2. The rotary dynamic ice maker according to claim 1, characterized in that: The shape of the heat conducting block (2) is elliptical or polygonal.

3. The rotary dynamic ice maker according to claim 2, characterized in that: The shape of the storage cavity bottom surface (103) is elliptical or polygonal, and the storage cavity bottom surface (103) and the heat conducting block (2) can be combined in different shapes.

4. The rotary dynamic ice maker according to claim 1, characterized in that: The storage cavity (104) is a polygonal column structure that is wide at the top and narrow at the bottom.

5. The rotary dynamic ice maker according to claim 1, characterized in that: The upper surface (201) of the heat conducting block is a smooth plane.

6. The rotary dynamic ice maker according to claim 1, characterized in that: Thermally conductive silicone grease is evenly applied between the refrigeration wall surface (3), the lower surface of the heat conductive block (2), and the cold output end surface of the refrigerator (6).

7. The rotary dynamic ice maker according to claim 1, characterized in that: The shape of the upper surface of the refrigeration wall surface (3) is the same as that of the heat conduction block (2), and the shape of the lower surface of the refrigeration wall surface (3) is the same as that of the cold output end surface of the refrigerator (6).

8. The rotary dynamic ice maker according to any one of claims 1 to 7, characterized in that: The power unit adopts a stepping motor (7), and the output end of the stepping motor (7) is connected to the refrigerator (6).

9. The rotary dynamic ice maker according to claim 8, characterized in that: It also includes a double-layer bracket (8), the ice making groove (1) is fixed on the upper layer of the bracket (8), and the stepping motor (7) is fixed on the lower layer of the bracket (8).

10. The rotary dynamic ice maker according to claim 8, characterized in that: A sensor installation hole (105) is provided near the bottom wall of the storage chamber (104), and an optical fiber ice sensor (11) is installed in the sensor installation hole (105); The cold energy generated by the refrigerator (6) is transferred to the refrigerant in the ice making groove (1) through the refrigeration wall surface (3) and the heat conducting block (2); as the cold energy is continuously input, the temperature of the refrigerant is continuously reduced, and ice is formed on the surface of the heat conducting block (2); when the optical fiber ice forming sensor (11) detects that the ice layer has reached a certain thickness and the edge of the ice layer is close to the inner wall surface of the ice making groove (1), the stepping motor (7) drives the rotating plate (4) to rotate a certain angle, and the heat conducting block (2) and the ice making groove (1) undergo relative rotational motion, and under the action of friction, the ice layer is separated from the surface of the heat conducting block (2) and gathered at the top of the ice making groove (1) under the action of buoyancy; Subsequently, the stepping motor (7) rotates in the opposite direction by the same angle, so that the heat conducting block (2) returns to its original position.

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