WO2017071071A1

WO2017071071A1 - Ice making apparatus and refrigerator

Info

Publication number: WO2017071071A1
Application number: PCT/CN2015/099370
Authority: WO
Inventors: 王海娟; 李鹏; 贾振飞
Original assignee: 合肥海尔电冰箱有限公司
Priority date: 2015-10-29
Filing date: 2015-12-29
Publication date: 2017-05-04
Also published as: CN105258423B; CN105258423A

Abstract

Provided are an ice making apparatus (100) and a refrigerator (1). The ice making apparatus (100) comprises: an ice making box (10) composed of a first thermally conductive material and internally divided to form a plurality of ice making grids for accommodating water to make ice cubes; a thermally conductive block (30) composed of a second thermally conductive material and arranged on the bottom of the ice making box (10); and at least one semiconductor cooling plate (50) arranged between the lower surface of the ice making box (10) and the upper surface of the thermally conductive block (30), an opposite first temperature changing surface (51) and a second temperature changing surface (52) of each semiconductor cooling plate (50) respectively being in thermal contact with the lower surface of the ice making box (10) and the upper surface of the thermally conductive block (30). The ice making apparatus (100) increases the cooling rate of water and implements rapid ice making, and facilitates the uniform distribution of cold in the ice making grids of the ice making box (10), so that the quality of the obtained ice cubes is basically the same.

Description

Ice making device and refrigerator

The present application claims the priority of the Japanese Patent Application Serial No. No. No. No. No. No. No. No.

Technical field

The invention relates to the field of ice making technology, in particular to an ice making device and a refrigerator.

Background technique

Ice machines typically include an ice making box that holds the water used to make the ice cubes. At present, household ice machines are classified into indirect refrigeration type ice machines and direct cooling type ice machines. The indirect refrigeration type ice making machine uses the cold air circulating in the freezing compartment to blow the ice making box to make ice cubes, and the direct cooling type ice making machine uses the evaporator of the refrigeration cycle to supply cold capacity to the ice making box to make ice cubes. . The method of removing ice from the ice making box usually adopts a heating type deicing method, that is, the ice cube is separated from the ice making box by a heater, and then the pulling rod is rotated by the motor or turned by twisting the ice box deformation. ice. The existing ice making machine has the defects of low ice making efficiency and incomplete deicing of the heater. In addition, the ice making of the ice making box is generally from the outside to the inside, and bubbles are easily generated inside the ice cube, which causes the ice cube to be opaque. With the improvement of human living standards, people's requirements for the quality of ice and the speed of ice making have increased, which has led to the fact that such ice machines are increasingly unable to meet people's needs.

Summary of the invention

An object of the first aspect of the present invention is to provide an ice making apparatus having high ice making efficiency in view of one of the above-mentioned drawbacks existing in the prior art.

A further object of the first aspect of the invention is to make the ice cubes produced by the ice making device transparent.

An object of the second aspect of the present invention is to provide a refrigerator having the above-described ice making device.

According to a first aspect of the present invention, an ice making apparatus is provided, comprising:

An ice making box made of a first heat conductive material, which is divided into a plurality of ice making compartments to accommodate water to make ice cubes;

a heat conducting block made of a second heat conductive material disposed at a bottom of the ice making box;

At least one semiconductor cooling sheet disposed between a lower surface of the ice making box and an upper surface of the heat conducting block, and an opposite first temperature changing surface and a second temperature changing surface of each of the semiconductor cooling sheets respectively The lower surface of the ice maker is in thermal contact with the upper surface of the thermally conductive block.

Optionally, each of the semiconductor refrigeration sheets is configured to:

Making the first temperature changing surface a cooling surface having a lowered temperature during ice making, so that water in the ice making box absorbs cold from the first temperature changing surface to form ice cubes;

After the end of the ice making, the first temperature changing surface is used as a heating surface having a raised temperature to heat the ice making box to separate the ice cubes in the ice making compartment from the ice making compartment.

Optionally, the upper surface of the heat conducting block is recessed downward to form at least one first groove, and each of the semiconductor cooling fins is partially embedded in one of the first grooves.

Optionally, the first heat conductive material and the second heat conductive material are aluminum or aluminum based alloys.

Optionally, the ice making device further includes:

An ice plucking rod on which a plurality of blades corresponding to the plurality of ice making grids are disposed to remove ice cubes in the plurality of ice making compartments.

Optionally, the number of the semiconductor refrigerating sheets is the same as the number of the ice making compartments, and the first temperature changing surface of each of the semiconductor refrigerating sheets is in thermal contact with the lower surface of the bottom wall of one of the ice making compartments.

Optionally, the lower surface of the heat conducting block forms a second recess that is recessed upward for being placed on the ice-making evaporator that releases the cooling amount to dissipate the second temperature-changing surface of the at least one semiconductor refrigerating sheet .

Optionally, the ice making device further includes:

a refrigerant cycle type refrigeration system having an ice making evaporator, the ice making evaporator being embedded in the second groove to be in thermal contact with a lower surface of the heat conducting block for cooling during ice making Conducted to the thermally conductive block to dissipate heat from the second temperature-changing surface of the at least one semiconductor refrigerating sheet.

Optionally, the ice making evaporator has a U-shaped tubular structure;

The second groove is a U-shaped groove, and a lower surface of the heat-conducting block forms a plurality of upwardly concave cells in a region around the second groove.

According to a second aspect of the present invention, a refrigerator is provided, comprising:

At least one storage room; and

An ice making device according to any of the preceding claims, which is disposed in one of said storage compartments.

Optionally, the refrigerator further includes:

a refrigerant circulation type refrigeration system for providing at least a cooling capacity for the at least one storage compartment;

The refrigerant cycle type refrigeration system further includes an ice making evaporator disposed in a storage compartment in which the ice making device is located, in thermal contact with a lower surface of the heat conducting block, for use in the ice making process The second temperature changing surface of the at least one semiconductor refrigerating sheet dissipates heat.

Optionally, a solenoid valve is disposed in the refrigerant circulation type refrigeration system to turn on or off a passage between the ice making evaporator and the refrigerant circulation type refrigeration system, and the electromagnetic valve is configured to :

During the ice making process, a passage between the ice making evaporator and the refrigerant circulation type refrigeration system is turned on to dissipate heat from the second temperature changing surface of the at least one semiconductor cooling sheet;

After the end of the ice making, the passage between the ice making evaporator and the refrigerant circulation type refrigeration system is disconnected.

In the ice making device of the present invention, by providing at least one semiconductor refrigerating sheet on the lower surface of the ice making box made of the first heat conductive material, the cold amount generated by the semiconductor refrigerating sheet can be quickly transmitted to the inside through the ice making box. In the water, it is beneficial to increase the cooling rate of water and achieve rapid ice making. In addition, the present invention facilitates the uniform distribution of the cold volume in each of the ice making compartments of the ice making box by disposing at least one semiconductor refrigerating sheet between the lower surface of the ice making box and the upper surface of the thermal block. The quality of the ice is basically the same.

Further, in the ice making device of the present invention, in the ice making process, the first temperature changing surface is a refrigerating surface, and the second temperature changing surface is a heating surface, so that during the ice making process, the semiconductor refrigerating sheet The generated cold amount can be transferred to the ice making box to condense the water into ice; and after the end of the ice making, by switching the polarity of the current, the first temperature changing surface of the semiconductor refrigeration sheet is a heating surface, and the second temperature changing surface is cooling. The surface, so that the heat generated by the semiconductor refrigeration sheet is transferred to the ice making box, facilitates the separation of the ice cubes in the ice making grid from the ice making grid, thereby achieving rapid deicing.

Further, the ice making device and the refrigerator of the present invention dissipate heat from the second temperature-changing surface of the semiconductor refrigerating sheet by using the ice making evaporator of the refrigerant cycle type refrigerating system, so that the temperature of the first temperature changing surface of the semiconductor refrigerating sheet can be further increased. Low, resulting in more cold, which further increases the speed of ice making and can be made into highly transparent ice.

The invention utilizes a refrigerant circulation type refrigeration system to circulate the heat radiated from the hot end (ie, the second temperature change surface) of the semiconductor refrigeration sheet to the compressor to achieve the purpose of heat dissipation, and the heat dissipation method can instantaneously generate the hot end of the semiconductor refrigeration sheet. The heat is dissipated, and the cold end can emit more cold (lower temperature), which facilitates rapid ice making and achieves the purpose of making transparent ice.

The above as well as other objects, advantages and features of the present invention will become apparent to those skilled in the <

DRAWINGS

Some specific embodiments of the present invention are described in detail below by way of example, and not limitation. The same reference numbers in the drawings identify the same or similar parts. Those skilled in the art should understand that the drawings are not necessarily drawn to scale. In the figure:

1 is a schematic structural view of an ice making device according to an embodiment of the present invention;

Figure 2 is a schematic exploded view of the ice making device shown in Figure 1;

Figure 3 is a schematic cross-sectional view of the ice making device of Figure 1;

Figure 4 is a schematic cross-sectional view of the ice making device of Figure 1;

Figure 5 is a schematic structural view of another angle of the ice making device shown in Figure 1;

Figure 6 is a schematic schematic view of a refrigerant cycle type refrigeration system in an ice making apparatus according to an embodiment of the present invention;

Figure 7 is a schematic perspective view of a refrigerator in accordance with one embodiment of the present invention;

Fig. 8 is a schematic schematic diagram of a refrigerant cycle type refrigeration system in the refrigerator shown in Fig. 7.

detailed description

1 is a schematic structural view of an ice making apparatus 100 according to an embodiment of the present invention; and FIG. 2 is a schematic exploded view of the ice making apparatus 100 shown in FIG. 1. Referring to Figures 1 and 2, the ice making device 100 can generally include an ice making box 10.

The ice making box 10 is made of a first heat conductive material which is divided into a plurality of ice making compartments to accommodate water to make ice cubes. A plurality of ice making compartments may be arranged along the length direction of the ice making apparatus 100. 3 and 4 are schematic cross-sectional views of the ice making device 100 of Fig. 1. As shown in FIGS. 3 and 4, each of the ice making compartments may have a U-shaped cross section in the longitudinal direction and the width direction of the ice making apparatus 100. The ice making apparatus 100 may further include an ice extraction bar 20 on which a plurality of blades corresponding to the plurality of ice making compartments are disposed to remove ice cubes in the plurality of ice making compartments. After the ice is finished (that is, after the ice cube is formed), and the ice cube in the ice tray is separated from the ice making box, the ice pulling rod 20 can be rotated by the motor (not shown), thereby making the ice making grid The ice cubes are removed from the ice making box 10. In an alternative embodiment, the ice box 10 can also be rotated by the motor to remove the ice cubes within the ice cube through the ice extraction bar 20.

The ice making apparatus 100 may further include a water bottle (not shown) for storing water and a water pump (not shown) for feeding water in the water bottle into the ice making box 10. When ice making is required, the water pump is started to inject water into the ice making box 10.

In particular, the ice making apparatus 100 may further include at least one semiconductor refrigerating sheet 50 and a heat conducting block 30. The heat conducting block 30 is made of a second heat conductive material and is disposed at the bottom of the ice making box 10. The first thermally conductive material and the second thermally conductive material are preferably metallic materials, more preferably aluminum or aluminum based alloys, for better thermal conductivity. The first heat conductive material and the second heat conductive material may be the same or different.

The semiconductor refrigerating sheet 50 is disposed between the lower surface of the ice making box 10 and the upper surface of the heat conducting block 30, and the opposite first temperature changing surface 51 and the second temperature changing surface 52 of each of the semiconductor cooling sheets 50 are respectively associated with the ice making box 10. The lower surface is in thermal contact with the upper surface of the thermally conductive block 30.

In the ice making apparatus 100 of the present invention, by providing the semiconductor refrigerating sheet 50 on the lower surface of the ice making box 10 made of the first heat conductive material, the amount of cold generated by the semiconductor refrigerating sheet 50 can be quickly transmitted through the ice making box 10. To the water inside, it is beneficial to increase the cooling rate of water and achieve rapid ice making. In addition, the present invention provides the semiconductor refrigerating sheet 50 between the lower surface of the ice making box 10 and the upper surface of the heat conducting block 30, and facilitates the heat transfer of the heat conducting block 30 to facilitate the second temperature changing surface 52 of each of the semiconductor refrigerating sheets 50. The temperatures are substantially the same, so that the temperature of the first temperature-changing surface 51 of each of the semiconductor refrigerating sheets 50 is substantially the same, thereby facilitating uniform distribution of the cold quantity in each ice making compartment of the ice making box 10, so that the quality of the prepared ice pieces is basically the same.

In some embodiments, the ice making device 100 can only be provided with one semiconductor refrigerating sheet 50, and one semiconductor refrigerating sheet 50 is simultaneously in thermal contact with the bottom walls of the plurality of ice making compartments of the ice making box 10, thereby simultaneously serving a plurality of ice making grids. Provide cooling capacity. In a preferred embodiment, the ice making device 100 can be provided with a plurality of semiconductor refrigerating sheets 50. The number of the semiconductor refrigerating sheets 50 can be the same as the number of ice making grids, and the first temperature changing surface 51 of each semiconductor refrigerating sheet 50 is The lower surface of the bottom wall of the ice tray is in thermal contact. Since each of the semiconductor refrigerating sheets 50 supplies a cooling capacity for one ice making compartment, the ice making rate can be increased. In the illustrated embodiment, the number of semiconductor refrigerating sheets 50 and ice making compartments is six.

Further, each of the semiconductor refrigerating sheets 50 is configured to have its first temperature changing surface 51 as a cooling surface having a lowered temperature during the ice making process (ie, the process in which the water in the ice making compartment absorbs the cold to solidify into ice), thereby The water in the ice making box 10 draws cold from the first temperature changing surface 51 to form ice cubes; and after the ice making ends, the first temperature changing surface 51 is used as a heating surface having a raised temperature to heat the ice making box 10. Thereby, the ice cubes in the ice making grid are separated from the ice making grid. That is, during the ice making process, the first temperature changing surface 51 in thermal contact with the lower surface of the ice making box 10 generates a cooling amount as a cold end, thereby transferring the cooling amount generated by the semiconductor refrigeration sheet 50 to the ice making box 10 The water supply condenses into ice; accordingly, the second temperature changing surface 52 in thermal contact with the upper surface of the heat conducting block 30 generates heat as a hot end. After the end of the ice making, during the process of separating the formed ice cube from the ice making compartment, the first temperature changing surface 51 in thermal contact with the lower surface of the ice making box 10 generates heat, thereby causing heat generated by the semiconductor refrigeration sheet 50. The transfer to the ice making box 10 facilitates the separation of the ice cubes produced in the ice making compartment from the ice making compartment, thereby achieving rapid deicing; accordingly, the second temperature changing surface 52 in thermal contact with the upper surface of the thermally conductive block 30 is produced. Cooling capacity.

Referring to FIG. 2, for ease of installation, the upper surface of the heat conducting block 30 is recessed downwardly to form at least one first recess 32, and each of the semiconductor cooling fins 50 is partially embedded in a first recess 32. The lower surface of the ice making box 10 is not in contact with the upper surface of the heat conducting block 30, thereby preventing the heat transfer block 30 from transferring heat to the ice making box 10.

The inventors of the present application found that although the ice making device 100 employing the above structure has a faster ice making efficiency, there is still room for improvement in the transparency of the produced ice. In the field of existing ice making devices, only one of a semiconductor refrigerating sheet and a refrigerant circulating type refrigerating system (also referred to as a compression refrigerating system) is generally used to provide a cooling capacity for an ice making box. In the field of ice making devices utilizing semiconductor refrigeration, those skilled in the art have not realized that it is necessary to use a ice making evaporator to dissipate the second temperature changing surface 52 of the semiconductor refrigerating sheet to obtain transparent ice. In a preferred embodiment of the present invention, the second temperature-changing surface 52 of the semiconductor refrigerating sheet 50 can be dissipated by the ice making evaporator in the refrigerant cycle type refrigerating system, thereby obtaining transparent ice cubes.

In some embodiments, referring to FIG. 5, the lower surface of the heat conducting block 30 forms a second recess that is recessed upwardly for the suit. The second temperature-changing surface 52 of the semiconductor refrigerating sheet 50 is dissipated on the ice-making evaporator 40 that releases the cooling amount. The lower surface of the heat conducting block 30 forms a plurality of upwardly recessed cells 32 in the region around the second groove to increase the strength and heat dissipation area, and to improve the temperature uniformity of the heat conducting block 30.

Those skilled in the art will appreciate that the ice making apparatus 100 of the embodiment of the present invention further includes a refrigerant cycle type refrigeration system. FIG. 6 is a schematic schematic diagram of a refrigerant cycle type refrigeration system in an ice making apparatus 100 according to an embodiment of the present invention. Referring to FIG. 6, the refrigerant cycle type refrigeration system may generally include a compressor 601, a condenser 602, a dew tapping pipe 603, a drying filter 604, an ice making capillary 615, an ice making evaporator 40, and the like, and these components constitute a refrigeration cycle. When the compressor 601 is started, the ice making evaporator 40 is cooled to conduct the cooling amount to the heat conducting block 30, thereby dissipating heat from the second temperature changing surface 52 of the semiconductor refrigerant sheet 50. A fan 612 for accelerating heat dissipation of the condenser 602 may be provided in the refrigerant cycle type refrigeration system.

The ice making evaporator 40 is embedded in the second groove of the heat conducting block 30 to be in thermal contact with the lower surface of the heat conducting block 30 for conducting the cooling amount to the heat conducting block 30 during the ice making process, thereby The second temperature changing surface 52 performs heat dissipation. The ice making evaporator 40 may be a disk evaporator. In the illustrated embodiment, the ice making evaporator 40 has a U-shaped tubular structure; and the second groove is a U-shaped groove.

Next, the operation of the ice making apparatus 100 having the above-described structure will be described with reference to Figs. 1 through 6 again.

First, the compressor 601 is started, at which time the semiconductor refrigerating sheet 50 is turned on to start operation. Since the first temperature changing surface 51 of the semiconductor refrigerating sheet 50 is cooled, the second temperature changing surface 52 simultaneously emits a large amount of heat, and the ice making evaporator 40 can instantaneously circulate the heat radiated from the second temperature changing surface 52 to the compressor 601. . The temperature of the first temperature changing surface 51 as the cold end of the semiconductor refrigerating sheet 50 may substantially reach -40 ° C or less (since the temperature of the ice making evaporator 40 for dissipating heat for the second temperature changing surface 52 can be at least -35 ° C, thereby The first temperature changing surface 51 is further cooled to -40 ° C or lower, so that the surface temperature of the ice making box 10 is instantaneously lowered. Then, the water pump is started to feed the water in the kettle into the ice making box 10. Since the surface temperature of the ice making box 10 can be below -40 ° C, the water in contact with the surface of the ice making box 10 can be instantly frozen. When the ice cube reaches the required size, the compressor 601 is turned off, and at this time, the hot end and the cold end of the semiconductor cooling fin 50 are reversed, even if the first variable temperature surface 51 dissipates heat as a hot end, and the second temperature changes. The surface 52 acts as a cold end to dissipate the cold so that the surface of the ice cube is instantly melted to achieve rapid separation of the ice cube from the ice making box 10. The ice rod 20 is then rotated by the motor to move the ice cubes in the ice tray 11 out of the ice making box 10.

In an alternative embodiment, the ice making device 100 may not separately provide a refrigerant cycle type refrigeration system, but uses a refrigerant cycle type refrigeration system of the refrigerator to dissipate heat from the second temperature changing surface 52 of the semiconductor refrigeration sheet 50 of the ice making device 100. . In such an embodiment, the refrigerant circulation type refrigeration system of the refrigerator may additionally be provided with an ice making evaporator 40 that is in thermal contact with the lower surface of the heat conducting block 30, thereby providing a second temperature change of the semiconductor refrigerating sheet 50 of the ice making apparatus 100. Surface 52 dissipates heat.

A solenoid valve (see the solenoid valve 605 in FIG. 8) may be provided in the refrigerant circulation type refrigeration system of the refrigerator to turn on or off the passage between the ice making evaporator 40 and the refrigerant circulation type refrigeration system, the solenoid valve The method is configured to: conduct a passage between the ice making evaporator 40 and the refrigerant circulation type refrigeration system during the ice making process to dissipate heat from the second temperature changing surface 52 of the semiconductor refrigeration sheet 50; The passage between the ice evaporator 40 and the refrigerant circulation type refrigeration system is opened.

The present invention may also provide a refrigerator 1 based on the ice making device 100 of any of the foregoing embodiments. Fig. 7 is a schematic structural view of a refrigerator 1 according to an embodiment of the present invention. The refrigerator 1 includes at least one storage compartment and the ice making apparatus 100 of any of the foregoing embodiments, and the ice making apparatus 100 is disposed in a storage compartment. In some embodiments, at least one storage compartment may include a refrigerating compartment 300 and a freezing compartment 200. The storage compartment in which the ice making apparatus 100 is provided is preferably a freezing compartment 200. A plurality of spaced-apart shelves may be disposed in the freezing compartment 200 to partition the freezing compartment 200 into a plurality of storage spaces having different heights. The ice making device 100 may be disposed in a storage space at the uppermost portion of the freezing compartment 200.

Generally, the refrigerator 1 further includes a refrigerant circulation type refrigeration system for providing at least a cooling capacity for the storage compartment. In the embodiment in which the refrigerant-making apparatus 100 does not separately provide the refrigerant cycle type refrigeration system, the refrigerant cycle type refrigeration system of the refrigerator 1 may further include a separate compartment in the storage compartment (ie, the freezing compartment 200) in which the ice-making apparatus 100 is located. An ice making evaporator 40 is provided which is in thermal contact with the lower surface of the thermally conductive block 30 for dissipating heat from the second temperature changing surface 52 of the semiconductor refrigerating sheet 50 during the ice making process. It will be understood by those skilled in the art that a schematic structural view of the ice making device 100 and the ice making evaporator 40 before installation is shown in FIG.

For the refrigerator 1 including the refrigerating compartment 300 and the freezing compartment 200, referring to FIG. 8, the refrigerant circulation type refrigerating system may include a compressor 601, a condenser 602, a dew tube 603, a drying filter 604, a refrigerating capillary, and freezing. Capillary, ice making capillary, liquid storage bag 606, refrigerated evaporator 608, freezing evaporator 607, ice making evaporator 40, and

fans

612, 617, 618 for accelerating cooling/heat dissipation. The refrigerant flows through the condenser 602 through the compressor 601, passes through the dew condensation pipe 603 to the drying filter 604, and then flows to the solenoid valve 605 of the inlet and the outlet, and then the refrigerant is branched to the refrigeration capillary through the solenoid valve 605. The capillary tube and the ice making capillary are frozen to enter the refrigerating evaporator 608, the freezing evaporator 607, and the ice making evaporator 40, respectively. The gaseous refrigerant mixed with the liquid refrigerant flowing through the refrigerating evaporator 608 further flows through the refrigerating evaporator 607 to convert all the refrigerant into a gaseous refrigerant, and the gaseous refrigerant returns to the compressor 601 through the return pipe; The refrigerant of the ice evaporator 40 flows directly back to the compressor 601 via the reservoir 606 to complete a refrigeration cycle.

As can be seen from the foregoing, the solenoid valve 605 can be used to turn on or off the passage between the ice making evaporator 40 and the refrigerant cycle type refrigeration system. In some embodiments, the solenoid valve 605 can be configured to: conduct a passage between the ice making evaporator 40 and the refrigerant cycle type refrigeration system during the ice making process to the second temperature changing surface 52 of the semiconductor refrigeration sheet 50. The heat is dissipated; after the end of the ice making, the passage between the ice making evaporator 40 and the refrigerant circulation type refrigerating system is disconnected.

Specifically, when the ice making device 100 starts to make ice, if the compressor 601 is in the activated state, the solenoid valve 605 turns on the ice making capillary to allow the refrigerant to flow to the ice making evaporator 40. When the ice making is completed, the solenoid valve 605 opens the passage between the ice making evaporator 40 and the refrigerant circulation type refrigerating system. When the ice making device 100 starts to make ice, if the compressor 601 is in the shutdown state, the compressor 601 is started, the electromagnetic valve 605 conducts the ice making capillary, and the refrigerant flows through the ice making evaporator 40 to return to the compressor 601. When the ice making is completed, the solenoid valve 605 opens the passage between the ice making evaporator 40 and the refrigerant circulation type refrigerating system. If neither the refrigerating compartment 300 nor the freezing compartment 200 requires refrigeration, the compressor 601 can be shut down.

In this regard, it will be appreciated by those skilled in the <RTIgt;the</RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; The content directly determines or derives many other variations or modifications consistent with the principles of the invention. Therefore, the scope of the invention should be understood and recognized as covering All of these other variations or modifications.

Claims

An ice making device comprising:

An ice making box made of a first heat conductive material, which is divided into a plurality of ice making compartments to accommodate water to make ice cubes;

a heat conducting block made of a second heat conductive material disposed at a bottom of the ice making box;

At least one semiconductor cooling sheet disposed between a lower surface of the ice making box and an upper surface of the heat conducting block, and an opposite first temperature changing surface and a second temperature changing surface of each of the semiconductor cooling sheets respectively The lower surface of the ice maker is in thermal contact with the upper surface of the thermally conductive block.
The ice making device according to claim 1, wherein

Each of the semiconductor refrigeration sheets is configured to:

Making the first temperature changing surface a cooling surface having a lowered temperature during ice making, so that water in the ice making box absorbs cold from the first temperature changing surface to form ice cubes;

After the end of the ice making, the first temperature changing surface is used as a heating surface having a raised temperature to heat the ice making box to separate the ice cubes in the ice making compartment from the ice making compartment.
The ice making device according to claim 1, wherein

The upper surface of the heat conducting block is recessed downward to form at least one first groove, and each of the semiconductor cooling fin portions is embedded in one of the first grooves.
The ice making device according to claim 1, wherein

The first thermally conductive material and the second thermally conductive material are aluminum or aluminum based alloys.
The ice making device according to claim 1, further comprising:

An ice plucking rod on which a plurality of blades corresponding to the plurality of ice making grids are disposed to remove ice cubes in the plurality of ice making compartments.
The ice making device according to claim 1, wherein

The number of the semiconductor refrigerating sheets is the same as the number of the ice making compartments, and the first temperature changing surface of each of the semiconductor refrigerating sheets is in thermal contact with the lower surface of the bottom wall of one of the ice making compartments.
The ice making device according to claim 1, wherein

The lower surface of the heat conducting block forms a second recess that is recessed upward for being placed on the ice making evaporator that releases the cooling amount to dissipate heat from the second temperature changing surface of the at least one semiconductor cooling sheet.
The ice making device according to claim 7, further comprising:

a refrigerant cycle type refrigeration system having an ice making evaporator, the ice making evaporator being embedded in the second groove to be in thermal contact with a lower surface of the heat conducting block for cooling during ice making Conducted to the thermally conductive block to dissipate heat from the second temperature-changing surface of the at least one semiconductor refrigerating sheet.
The ice making device according to claim 8, wherein

The ice making evaporator has a U-shaped tubular structure;

The second groove is a U-shaped groove, and a lower surface of the heat-conducting block forms a plurality of upwardly concave cells in a region around the second groove.
A refrigerator comprising:

At least one storage room; and

An ice making device according to any one of claims 1 to 7, which is disposed in one of said storage compartments.
The refrigerator according to claim 10, further comprising:

a refrigerant circulation type refrigeration system for providing at least a cooling capacity for the at least one storage compartment;

The refrigerant cycle type refrigeration system further includes an ice making evaporator disposed in a storage compartment in which the ice making device is located, in thermal contact with a lower surface of the heat conducting block, for use in the ice making process The second temperature changing surface of the at least one semiconductor refrigerating sheet dissipates heat.
A refrigerator according to claim 11, wherein

The refrigerant circulation type refrigeration system is provided with a solenoid valve to turn on or off a passage between the ice making evaporator and the refrigerant circulation type refrigeration system, and the electromagnetic valve is configured to:

During the ice making process, a passage between the ice making evaporator and the refrigerant circulation type refrigeration system is turned on to dissipate heat from the second temperature changing surface of the at least one semiconductor cooling sheet;

After the end of the ice making, the passage between the ice making evaporator and the refrigerant circulation type refrigeration system is disconnected.