JP4455480B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator, and more particularly to a refrigerator provided with an ice making device that obtains ice with high transparency.

  In conventional refrigerators, as a means of generating highly transparent ice, a separate shape that separates the ice particles into upper and lower parts is provided in each particle shape of the ice tray, leaving the connecting portion, and the cloudy portion is formed by cooling from above. Water moved to the lower part of the ice tray to produce transparent ice on the upper part, and in the icing process after ice making is completed, the connecting part is cut to clear the transparent ice, and the remaining cloudy ice is newly supplied to the ice tray. And an ice making device for making ice again after melting and mixing in (see, for example, Patent Document 1).

Japanese Patent Laying-Open No. 2004-245484 (Claim 1, FIG. 3)

  In such an automatic ice making device of a refrigerator, as a means for cutting the connecting portion between the transparent ice portion and the cloudy ice portion, the ice making drive device starts rotating, and is cut by rotating and twisting the ice tray. Yes. By twisting the ice tray, the ice tray is deformed, the transparent ice part is pushed out, and the transparent ice part is separated from the cloudy ice part by tearing the transparent ice part. As described above, since the ice is divided only by twisting the ice tray, a large force is required to divide the ice. Therefore, a large noise is generated at the time of the division.

  The present invention has been made to solve such a problem, and an object of the present invention is to obtain a refrigerator having low transparency and a low noise level while obtaining clean ice with high transparency.

In this invention, a separate shape is provided in each of the ice trays to separate the ice grains up and down, leaving the connecting portion, and by cooling from above, cloudy ice is generated at the bottom of the ice tray and transparent ice is formed at the top. In the deicing process after ice making is completed, the connecting part is cut to clear ice, and the remaining cloudy ice is melted and mixed with water supplied to a new ice tray, and then ice is made again. The ice making device includes a cloudy ice part cutting means for cutting the cloudy ice from the transparent ice before the ice removal, and the cloudy ice part cutting means is provided on the ice tray. It is provided for each grain shape, and is composed of a disk that rotates about a rotating shaft that is provided eccentrically, and the disk rotates to come into contact with the cloudy ice part, whereby the cloudy ice part The cloudy ice is removed from the transparent ice Be one that is cross-sectional, by shifting the phase of each rotational position for each disc for each particle shape of the ice tray, that shifting the cutting time for the cutting and the transparent ice and the clouded ice for each ice It is a featured refrigerator.

According to the present invention, a separate shape is provided in each of the particle shapes of the ice tray to separate the ice particles up and down, leaving the connecting portion, and by cooling from above, cloudy ice is generated in the lower portion of the ice tray and is formed in the upper portion. Clear ice is generated, and in the process of removing ice after completion of ice making, the connecting portion is cut to clear ice, and the remaining cloudy ice is melted and mixed with water supplied to a new ice tray, and then again. An ice making device that performs ice making, the ice making device further comprising a cloudy ice part cutting means for cutting the cloudy ice from the transparent ice before the de-icing, and the cloudy ice part cutting means is It is provided for each grain shape of the dish, and is composed of a disk that rotates about a rotating shaft that is provided eccentrically, and the disk rotates to contact the clouded ice part, whereby the cloudy ice The cloudy ice is transparent as the pressing force is applied to the part It is one that is cleaved from, by shifting the phase of each rotational position for each disc for each particle shape of the ice tray, shifting the cutting time for the cutting and the transparent ice and the clouded ice for each ice Therefore, before twisting the ice tray, the cloudy ice part is cut by the means for cutting the cloudy ice part without generating a loud noise, thereby reducing the noise level at the time of deicing. Transparent ice can be made.

  When producing ice in an ice making device, the present invention makes the other parts transparent by concentrating the cloudy part of the ice due to gas components, ion components, etc. in the supplied water, and separating each of them. It is related with the refrigerator provided with the ice making apparatus which obtains ice with high transparency by this. Embodiments of the present invention will be described below with reference to the drawings.

Embodiment 1 FIG.
1 to 6 are diagrams showing the first embodiment, FIG. 1 is an explanatory diagram of the structure of the refrigerator, FIG. 2 is an explanatory diagram of the ice making device, FIG. 3 is an explanatory diagram of the structure of the ice tray, and FIGS. The explanatory view which looked at the ice tray for explaining a cutting part from a horizontal direction, and Drawing 6 are the explanatory views which looked at the ice tray for explaining a cloudy ice cutting part from the perpendicular lower surface direction.

  First, the whole structure of a refrigerator is demonstrated using FIG. In FIG. 1, a refrigerator body 1 includes a refrigeration room 100 provided with an open / close door at the top, and a refrigeration temperature range (−18 ° C.) provided under the refrigeration room 100, refrigeration, vegetables, and chilled. A switching chamber 400 having a drawer door that can be switched to any one of the temperature zones, an ice making chamber 500 having a drawer door in parallel with the switching chamber 400, and a freezing chamber 200 having a drawer door disposed at the bottom. And a vegetable compartment 300 having a drawer door between the freezer compartment 200, the switching compartment 400 and the ice making compartment 500.

  Moreover, as shown in FIG. 1, the cooler 3 which produces | generates the cool air for cooling the inside of the refrigerator main body 1 is installed in the position spanning the vegetable compartment 300 and the freezer compartment 200. As shown in FIG. A fan 2 for circulating the cold air generated by the cooler 3 is provided at the upper part of the cooler 3. Further, the cooler 3 is provided with a cool air blow duct 4 and a return duct 5 that connect the cooler 3, the refrigerator compartment 100, the switching chamber 400, the ice making chamber 500, and the freezer compartment 200. The cold air blowing duct 4 is a blower pipe for sending the cold air generated by the cooler 3 to the refrigerating room 100, the switching room 400, the ice making room 500, and the freezing room 200. Conversely, the return duct 5 is a blower pipe for returning the used cold air used for cooling in those places from the refrigerating room 100, the switching room 400, the ice making room 500, and the freezing room 200 to the cooler 3. .

  The cold air cooled by the cooler 3 is circulated in the refrigerator main body 1 by the fan 2 provided at the upper part of the cooler 3. The cooled cold air is sent from the cooler 3 to the refrigerator compartment 100, the switching chamber 400, the ice making chamber 500, and the freezer compartment 200 through the cold air blowing ducts 4 provided to cool the rooms. Later, the air is returned again to the cooler 3 by the return duct 5 from each room, heat is exchanged again, and cold air is circulated. Moreover, in the vegetable compartment 300, it is radiatively cooled by the return cold air of the refrigerator compartment 100. Moreover, the temperature control of each room is performed by controlling the air volume regulator 7 installed in each cold air duct 4 by the temperature sensor 6 installed in each room.

Here, as an example, a layout in which the ice making chamber 500 is arranged in parallel with the switching chamber 400 between the refrigerator compartment 100 and the vegetable compartment 300 is shown, but the configuration is not limited thereto. For example, a layout in which the ice making chamber 500 is arranged in parallel with the switching chamber 400 between the vegetable chamber 300 and the freezing chamber 200, or the ice making chamber 500 may be a part of the freezing chamber 200.
1 will be described later.

  Next, the configuration of the ice making device will be described with reference to FIG. As shown in FIG. 2, the refrigerating chamber 100 is provided with a water supply tank 8 for supplying water to the ice tray 11 placed in the ice making chamber 500. In the water supply tank 8, a water supply pump 9 for pumping up water in the water supply tank 8 is provided. In addition, a water supply pipe 10 that connects the water supply tank 8 and the ice making chamber 500 is provided, and the pumped water is supplied to the ice tray 11 through the water supply pipe 10. Further, as shown in FIG. 2, an ice making drive device 12 for twisting the ice making tray 11 is provided, and the ice making drive device 12 is fixed by a frame body 13. Further, an ice making thermistor 14 for determining completion of ice making is provided at the lower part of the ice making tray 11. Further, an ice detecting lever 15 for detecting the ice storage amount is incorporated in the ice making drive device 12.

  In the configuration shown in FIG. 2, water is pumped up from a water supply tank 8 installed in the refrigerating room 100 by a water supply pump 9 in the water supply tank 8 so that the refrigerating room 100 and the ice making room 500 communicate with each other. Water is supplied to the ice tray 11 that generates ice through the inside. The cold air that has passed through the cold air blowing duct 4 for the ice making chamber 500 is supplied to the ice making tray 11 and the frame body 13 that fixes the ice making driving device 12 that twists the ice making tray 11 to perform ice making.

  The determination of completion of ice making is determined to be ice making completion when the ice making thermistor 14 fixed to the lower part of the ice making tray 11 falls below a certain set temperature, and when it is determined that ice making is completed, it is incorporated into the ice making drive unit 12. The ice storage lever 15 for detecting the ice storage amount is operated to detect the ice storage amount. When the full ice amount set at a position lower than the rotation trajectory of the ice tray 11 has not been reached, the ice making drive device 12 rotates. The ice is detached from the ice tray 11 by starting the operation and rotating and twisting the ice tray 11.

  An example of the structure of the ice tray 11 of the present invention will be described with reference to FIG. FIG. 3 shows a cross-sectional shape of the ice tray 11. The ice making portion of the ice tray 11 is formed of a transparent ice portion 17, a separator member 16 (separator shape), and a cloudy ice portion 18 for each ice piece (each grain shape). As shown in FIG. 3, the transparent ice part 17 has a trapezoidal cross section and is tapered toward the opening. The separator member 16 is a plate-like member, and is provided with a through hole that allows the transparent ice portion 17 and the cloudy ice portion 18 to communicate with each other. Thereby, the traffic of the water before freezing between the transparent ice part 17 and the cloudy ice part 18 is possible. The cloudy ice part 18 has a circular tube shape and is hollow inside, but the bottom part is closed. One or more cloudy ice parts 18 are provided below the transparent ice part 17. In the example of FIG. 4, two cloudy ice portions 18 are provided for each ice (grain shape) of the ice tray 11.

  The ice formation mechanism freezes from the low temperature area around the water, so the gas components that cause white turbidity are chased by the unfrozen part in the center when water freezes from the outer shell, and it becomes cloudy . In the transparent ice making system of the present invention, the cloudy part is driven downward by cooling from the opening of the ice tray 11, that is, from above, to promote separation of the cloudy part and the transparent part in the ice.

  In order to perform cooling from above, the ratio of the amount of cold air to the opening area of the cold air blowing ducts at the top and bottom of the ice tray 11 in FIG. 2 is increased above the bottom of the ice tray 11 or the fan 2 for cooling air blow is rotated. The numerical control is performed, the opening angle of the air volume adjuster 7 is adjusted to change the wind direction, or the cloudy part is heated with a heater.

  Then, the ice cloudy ice part 18 and the transparent ice part 17 are separated by the separator member 16 provided in the ice tray 11. As described above, the separator member 16 has a through hole (opening) for connecting the transparent ice portion 17 and the cloudy ice portion 18. It is desirable to provide at least two through holes. The shape of the through hole may be a round hole shape, a square hole shape, or a slit shape, and is not limited to any one.

  In addition, the separator member 16 may be installed at a position where the volume of the cloudy ice part 18 ensures a capacity of 5 to 30% of the total ice particle volume of the cloudy ice part 18 and the transparent ice part 17. Good. If it says with the depth dimension from the ice tray 11 bottom face, it should just be installed in the position of 2-10 mm, for example. This is because when the volume of the cloudy ice part 18 exceeds about 30% of the ice particle volume, the ice tray 11 becomes large when a necessary size is secured as a transparent part.

  Then, only the completed high-transparency ice in the transparent ice part 17 on the upper part of the separator member 16 is deiced, and then the water supplied to the ice tray 11 is newly supplied to the bottom surface through the through hole in the separator member 16. The cloudy ice in the cloudy ice part 18 is melted and the air component in the ice is degassed and used again to generate transparent ice. As a result, an inexpensive transparent ice can be produced without requiring a drainage mechanism.

  An example of the ice tray structure of the present invention will be described with reference to FIG. As shown in FIG. 4, the disk 30a11 is provided so that it may lightly contact each cloudy ice part 18, or may leave | separate leaving a clearance gap. In the example of FIG. 4, one disk 30 a 1 is provided on each outer side of the two cloudy ice parts 18. The disc 30a11 is provided with a cloudy ice part cutting part rotating shaft 30b1 at an eccentric position, not at the center, and rotates about the axis. Normally, it is in the position shown in FIG. 4A and is in contact with the cloudy ice part 18, but no pressing force is applied. On the other hand, when the disk 30a11 rotates in the direction of the arrow in FIG. 4 (a), the shaft is decentered. Therefore, as shown in FIG. Thus, the cloudy ice part 18 is brought inward. The cloudy ice part cutting part rotating shaft 30b1 and the disk 30a11 constitute a cloudy ice cutting part 30 (cloudy ice part cutting means).

  In order to check the noise level at the time of division between general clear ice and cloudy ice, it is equipped with a normal ice tray that is not for clear ice and without cloudy ice, and a cloudy ice for clear ice The ice tray was similarly twisted to measure the noise level when the ice leaves the ice tray. As a result, the ice tray noise level for transparent ice was 10 dB or more higher than the noise level of a normal ice tray not for transparent ice. In addition, in the ice tray for transparent ice, the cloudy ice part was first manually folded and cut from the transparent ice part, but the noise level at the time of deicing is the same as the noise level of a normal ice tray for non-clear ice. It was a level. From this result, the noise generated when the transparent ice part and the cloudy ice part are divided by twisting the ice tray and tearing the transparent ice part from the cloudy ice part is the dominant factor in the noise at the time of deicing, I discovered the problem that the noise level was high to make clear ice.

  In order to investigate the reason why the noise level becomes high, the result of observing the ice tray after obtaining transparent ice by the above method will be described below. FIG. 18 shows the deformation of the ice tray and the movement of the ice when the transparent ice is taken out by twisting the ice tray and deforming the ice tray. 18, when the transparent ice part 17 is considered as the upper part and the cloudy ice part 18 (not shown in FIG. 18, see FIG. 19) is considered as the lower part, the transparent ice part 17 has a diagonal upward force shown in FIG. 18. It occurs and tries to leave the ice tray 11. This force is the same for the cloudy ice part 18, but the cloudy ice part 18 is in contact with the ice tray 11 with a structure having a large friction, so that the cloudy ice part 18 remains in the ice tray 11 as a result. The transparent ice part 17 is detached from the cloudy ice part 18 in such a form that it is torn off. As a result, the state of the ice remaining in the ice tray 11 is shown in FIG. As shown in FIG. 19, after the ice making tray 11 is rotated and twisted, the transparent ice is divided by the cloudy ice portion 18, and then the remaining ice 40 remains in the ice making tray 11. As shown in FIG. 19, only the cloudy ice part 18 is not cut, but the ice remains on the ice tray 11 in such a way as to go around the transparent ice part 17. Therefore, it can be seen that a large force is generated to break the transparent ice itself. This large force is transmitted to the ice tray 11 to generate a large noise.

  For this reason, in the present embodiment, the ice-making drive device 12 starts rotating, and the ice-making tray 11 is rotated and twisted before the transparent ice is detached from the ice-making tray 11 to rotate the cloudy ice section cutting section. As the disk 30a11 rotates about the shaft 30b1, the cloudy ice part 18 is pushed inward by the disk 30a11 and tilted as shown in FIG. 4 (b), whereby the transparent ice part 17 and the cloudy ice part 18 A shearing force was applied to the through-holes connecting the transparent ice and the cloudy ice so that they were cut. Thereafter, the ice making drive device 12 starts rotating and rotates and twists the ice tray 11 so that only the transparent ice of the transparent ice portion 17 that has already been cut from the cloudy ice of the cloudy ice portion 18 is detached from the ice tray 11. Therefore, twisting the ice tray 11 can produce transparent ice without generating a loud noise that breaks the ice.

  5 also operates in the same manner as FIG. 4, and in FIG. 5, the cloudy ice cutting part 30 is formed by an elliptical disk 30a11 and a cloudy ice part cutting part rotating shaft 30b1. It is obvious that the cross-sectional shape is not elliptical but may be any triangle as long as it performs the same operation. In the case of an ellipse or a triangle, the cloudy ice part cutting part rotation shaft 30b1 may be provided at the center without being eccentric.

  FIG. 6 shows an example in which the cloudy ice cutting unit 30 shown in FIGS. 4 and 5 is attached to all the ice production units (each grain shape) of the ice tray, and the cloudy ice cutting unit disks 30a11 to 30a14 are counted from the right. The generation part first stage cloudy ice cutting part disk, the cloudy ice cutting part disk 30a21 to 30a24 are counted from the right, the ice generation part second stage cloudy ice cutting part disk, and the cloudy ice cutting disk part 30a31 to 30a34 are counted from the right. The ice generation unit third stage cloudy ice cutting unit disk, the cloudy ice cutting unit disk 30a41-30a44 counting from the right, the ice generation unit fourth stage cloudy ice cutting unit disk, 30b1-30b4 is the cloudy ice cutting unit 30a11- On the axis of 30a44, the cloudy ice cutting part disks 30a11 to 30a44 are attached eccentrically in the case of FIG. In the case of FIG. 5, it is not necessary to decenter.

  As described above, in the present embodiment, a separate shape is provided in each of the ice cubes 11 in the ice tray 11 so as to divide the ice particles into upper and lower portions while leaving the connecting portions, and it becomes cloudy by cooling from above. The ice part 18 is moved to the lower part of the ice tray 11 to produce transparent ice at the upper part, and in the process of removing ice after completion of ice making, the connecting part is cut to release the transparent ice, and the remaining cloudy ice is newly made into ice. In an ice making device that melts and mixes with water supplied to the plate 11 and then makes ice again, the ice making plate 11 is provided with the cloudy ice part cutting unit 30. Therefore, the ice making plate 11 is rotated and twisted. Prior to deicing, the cloudy ice part cutting unit 30 can cut only the cloudy ice part 18 by applying a shearing force to the joint between the cloudy ice part 18 and the transparent ice part 17. Thereby, generation | occurrence | production of a loud sound when breaking ice with the big force which tears off the transparent ice part like the past can be prevented, and low noise can be implement | achieved.

Embodiment 2. FIG.
FIG. 7 is a diagram illustrating the second embodiment. As shown in FIG. 7, in the present embodiment, an ice tray 11 having the configuration shown in FIG. 4 as each stage is taken as an example. As shown in FIG. 7, the cloudy ice cutting part disks 30a11 and 30a21 of the cloudy ice cutting part 30 in each stage such as the first stage and the second stage are provided so as to rotate about a common rotating shaft 30b1. . At this time, the phases of the rotational positions of the respective steps of the cloudy ice cutting part disks 30a11 and 30a21 with respect to the rotation shaft 30b1 are shifted by a predetermined value. In FIG. 7, only the first stage and the second stage are shown, but actually, as shown in FIG. 6, the ice tray 11 has more stages.

  From FIG. 7, when the first stage cloudy ice cutting part disk 30 a 11 is rotated by a certain angle around the rotation axis 30 b 1, the cloudy ice cutting part disk 30 a 21 is rotated by the same angle in the second stage. Is different from the first stage, the cloudy ice cutting part disk 30a21 comes into contact with the cloudy ice part 18 and a pressing force is applied to cut the joined part of the cloudy ice part 18 and the transparent ice part 17. In the first stage, the cloudy ice cutting part disk 30a11 does not come into contact with the cloudy ice part 18, so that the pressing force is not applied and the joined part of the cloudy ice part 18 and the transparent ice part 17 is not cut. Furthermore, when it rotates, even in the first stage, the cloudy ice cutting part disk 30a11 contacts the cloudy ice part 18 and applies a pressing force to cut the joining part of the cloudy ice part 18 and the transparent ice part 17. As a result, in the first and second stages, there is a time difference in cutting the joint between the cloudy ice part 18 and the transparent ice part 17. Similarly, by shifting the phase of the rotational position in the third stage and the fourth stage, a time difference is generated in cutting the joint portion between the cloudy ice part 18 and the transparent ice part 17 in each stage. Similarly, by shifting the phase of the rotational position of the two ice pieces on the left and right sides of each stage, a time difference occurs in cutting the joint between the cloudy ice part 18 and the transparent ice part 17 in each stage. When the ice cutting time is the same, for example, when eight ice pieces are cut at the same time, noise that is eight times the noise of cutting one ice is generated. However, as shown in FIG. 7, by shifting the phase of the rotational position, the cutting time of each ice becomes different, and even when cutting eight ices, the noise can be at the noise level when cutting one ice piece. Further low noise can be realized.

  In FIG. 7, the case where the axis of the cloudy ice cutting part is installed at a position shifted from the center of the cloudy ice cutting part disk shown in FIG. 4 is described. However, when the cloudy ice cutting part disk shown in FIG. However, the same effect can be achieved with the same configuration. In this case, the rotation angle of the ellipse may be set so as to be different for each cloudy ice cutting part disk.

  In addition, in order for the pressing forces applied to the cloudy ice part 18 by each cloudy ice cutting part disk to be separated sufficiently in time, the rotation speed of the axis of the cloudy ice cutting part may be slowed down sufficiently, and the rotational speed should be slowed down. It is obvious that even lower noise is achieved.

  As described above, also in the present embodiment, the same effect as in the first embodiment can be obtained. Further, in the present embodiment, the cloudy ice part cutting unit installed on each ice in the ice tray. Since the cutting time is shifted by adding a phase difference to each rotational position at 30, the ice can be cut one by one at a time difference, so that the peak of the noise level due to ice cutting is reduced. can do.

Embodiment 3 FIG.
FIGS. 8 and 9 are explanatory views of the ice making tray for explaining the cloudy ice cutting portion as seen from the horizontal direction, and FIG. 10 is an explanatory view of the ice making tray for explaining the cloudy ice cutting portion as seen from the vertical lower surface direction. It is. As shown in these drawings, in the present embodiment, the cloudy ice part cutting part rotating shaft 30b1 and the disk 30a11 are provided inside the plurality of cloudy ice parts 18 provided at the lower part of the transparent ice part 17. The cloudy ice cutting part 30 comprised is provided. In the first and second embodiments, the example in which the two cloudy ice cutting parts 30 are provided outside the cloudy ice part 18 for each grain shape has been described, but in the present embodiment, One cloudy ice cutting part 30 is provided between the cloudy ice parts 18 for each grain shape.

  An example of the ice tray structure of the present invention will be described with reference to FIG. The ice making drive device 12 (see FIG. 2) starts rotating, and the ice making plate 11 is rotated and twisted before the ice is deiced from the ice making plate 11, so that the cloudy ice cutting portion formed by an eccentric disk is formed. By rotating 30a11 in the direction of the arrow shown in FIG. 8, the opening that connects the transparent ice part 17 and the cloudy ice part 18 is sheared and cut. Thereafter, the ice making drive device 12 starts rotating, and the ice tray 11 is rotated and twisted, so that only the transparent ice portion 17 from which the cloudy ice portion 18 has already been cut is detached from the ice tray 11. Transparent ice generation can be realized without generating a loud noise that destroys ice by twisting.

  9 also operates in the same manner as FIG. 8, and in FIG. 9, the cloudy ice cutting part 30a11 is formed of an elliptical disk 30b1. It is obvious that the cross-sectional shape is not elliptical, and any shape can be used as long as it has the same operation as a triangle.

  FIG. 10 shows an example in which the cloudy ice cutting unit 30 shown in FIGS. 8 and 9 is attached to all the ice generating units (each grain shape) of the ice tray 11, and the cloudy ice cutting unit disks 30a11 to 30a12 are counted from the right. From the right, the cloud generation ice cutting part disk of the first stage, the cloudy ice cutting part disks 30a21 to 30a22 are counted from the right, the cloudy ice cutting part disk of the second stage of the ice generation part, and the cloudy ice cutting disk parts 30a31 to 30a32 are From the right, the cloudy ice cutting part disk 30a41-30a42 is counted from the right, and the cloudy ice cutting part disk 30b1 is the cloudy ice cutting part 30a11. The axis of 30a41, 30b2 is the axis of the cloudy ice cutting part 30a12-30a42, and the cloudy ice cutting part disk 30a11-30a24 is eccentrically attached in the case of FIG. In the case of FIG. 9, it is not necessary to decenter.

  As described above, also in the present embodiment, the same effect as in the above-described first embodiment can be obtained. Further, in the present embodiment, cloudiness can be applied to each ice (each grain shape). Since one cloudy ice cutting part disk is provided between the ice parts 18, the number of cloudy ice cutting part disks can be reduced, and the manufacturing process and manufacturing cost can be reduced accordingly.

Embodiment 4 FIG.
FIG. 11 is a diagram showing the fourth embodiment. The effect of the case where the phase of the rotational position is shifted with respect to the center of the cloudy ice cutting part disk between the first stage and the second stage shown in FIG. Examples are shown for the first and second stages. From FIG. 11, when the axis 30b1 of the cloudy ice cutting part is rotated at a certain angle, the cloudy ice cutting part disk 30a21 is pressed against the cloudy ice part 18 in the second stage, and the cloudy ice part 18 and the transparent ice part 17 are applied. However, in the first stage, the cloudy ice cutting part disk 30a11 is not pressed against the cloudy ice part 18 and does not cut the joining part of the cloudy ice part 18 and the transparent ice part 17. Furthermore, when it rotates, the cloudy ice cutting part disk 30a11 applies a pressing force to the cloudy ice part 18 even at the first stage, and cuts the joint between the cloudy ice part 18 and the transparent ice part 17. As a result, in the first and second stages, there is a time difference in cutting the joint between the cloudy ice part 18 and the transparent ice part 17. Similarly, by shifting the phase of the rotational position in the third stage and the fourth stage, a time difference is generated in cutting the joint portion between the cloudy ice part 18 and the transparent ice part 17 in each stage. Similarly, by shifting the phase of the rotational position of the two ice pieces on the left and right sides of each stage, a time difference occurs in cutting the joint between the cloudy ice part 18 and the transparent ice part 17 in each stage. If the ice cutting times are the same, for example, if eight ice pieces are cut at the same time, noise that is eight times the noise of cutting into one piece of ice is generated. However, by shifting the phase of the rotational position as shown in FIG. 11, the cutting time of each ice becomes different, and even when cutting eight ice pieces, the noise level is sufficient to cut one ice piece. Low noise can be realized.

  In FIG. 11, the case where the axis of the cloudy ice cutting part is installed at a position shifted from the center of the cloudy ice cutting part disk shown in FIG. 8 is described. However, when the cloudy ice cutting part disk shown in FIG. However, the same effect can be achieved with the same configuration. In this case, the rotation angle of the ellipse may be set so as to be different for each cloudy ice cutting part disk.

  Moreover, in order for each force applied to the cloudy ice part 18 by each cloudy ice cutting part disk to separate sufficiently in time, the rotation speed of the axis of the cloudy ice cutting part may be sufficiently slowed down, and the rotational speed is slowed down. It is also obvious that low noise is realized.

  As described above, also in the present embodiment, the same effect as in the third embodiment can be obtained. Further, in the present embodiment, the cloudy ice part cutting unit installed on each ice in the ice tray. Since the cutting time is shifted by adding a phase difference to each rotation angle at 30, the ice is cut one by one at a time difference, so that the peak of the noise level can be reduced.

Embodiment 5 FIG.
FIG. 12 is a diagram showing the fifth embodiment, and is an explanatory view of an ice tray for explaining the cloudy ice cutting part as seen from the horizontal direction. As shown in FIG. 12, a cloudy ice cutting wedge 31 is provided immediately below each grain shape of the ice tray 11 and between the cloudy ice part 18. The cloudy ice cutting wedge 31 has a wedge shape with a narrow upper portion and a thick lower portion. That is, the cloudy ice cutting wedge 31 is gradually narrowed toward the tip in the height direction of the ice tray 11. The cloudy ice cutting wedge 31 is raised in the direction of arrow A in FIG. 12, or conversely, the ice tray 11 is lowered in the direction of arrow B in FIG. The cloudy ice portion 18 of the ice tray 11 normally extends downward as shown in FIG. 12A. At this time, when the ice cube cutting wedge 31 rises in the direction of arrow A in FIG. 12, or conversely, when the ice tray 11 descends in the direction of arrow B in FIG. A pressing force is applied to the cloudy ice part 18 so that it opens outward as shown in FIG.

  An example of the ice tray structure of the present invention will be described with reference to FIG. The ice making drive 12 starts rotating, and the ice making tray 11 is rotated and twisted before the ice is removed from the ice making tray 11, the cloudy ice cutting wedge 31 is raised or the ice making tray 11 is lowered. As a result, a pressing force is applied so that the cloudy ice part 18 opens outward, and the opening that connects the transparent ice part 17 and the cloudy ice part 18 is sheared and cut. Thereafter, the ice making drive 12 starts rotating, and the ice tray 11 is rotated and twisted, so that only the transparent ice portion 17 from which the cloudy ice portion 18 has already been cut is detached from the ice tray, so the ice tray 11 is twisted. This makes it possible to produce transparent ice without generating a loud noise that breaks the ice.

  As described above, in the present embodiment, a separate shape is provided in each of the particle shapes of the ice tray 11 so as to divide the ice particles into the upper and lower portions while leaving the connecting portions, and the cloudy ice portion 18 is made into ice by cooling from above. The ice is moved to the lower part of the plate 11 to produce transparent ice on the upper part. In the deicing process after the ice making is completed, the connecting part is cut to remove the transparent ice, and the remaining cloudy ice is newly supplied to the ice making plate 11. In an ice making apparatus that melts and mixes with fresh water and then makes ice again, the ice making tray 11 is provided with a wedge 31 for cutting cloudy ice. The cloudy ice cutting wedge 31 can cut only the cloudy ice part 18 by applying a shearing force to the joint between the cloudy ice part 18 and the transparent ice part 17. Thereby, generation | occurrence | production of a loud sound when breaking ice with the big force which tears off the transparent ice part like the past can be prevented, and low noise can be implement | achieved.

Embodiment 6 FIG.
FIG. 13 shows the sixth embodiment, and is a view of the ice tray 11 and the cloudy ice cutting wedge 31 shown in FIG. 12 as viewed from the side. As shown in FIG. 13, the cloudy ice cutting wedge 31 has a slope shape with a gentle slope, the height on the right side is the highest in FIG. 13, and the height on the left side in FIG. It is low. Further, an explanatory view of the ice tray as viewed from the horizontal and vertical direction is as shown in FIG. 12, which has a wedge shape with a thin upper portion and a thick lower portion.

  13, the cloudy ice cutting wedge 31 is raised in the direction of arrow A in FIG. 13 or the ice tray 11 is lowered in the direction of arrow B in FIG. A force is applied so that the cloudy ice part 18 opens outward, and an opening that connects the transparent ice part 17 and the cloudy ice part 18 is sheared and cut. Next, a force is applied so that the cloudy ice part 18 of the second ice grain from the right side opens outward, and the opening connecting the transparent ice part 17 and the cloudy ice part 18 is sheared and cut, Next, the third and fourth from the right side are sequentially cut by applying shearing force to the opening connecting the transparent ice part 17 and the cloudy ice part 18. As a result, the cutting time of each ice is different, and even when cutting eight ice pieces, the noise level is sufficient to cut one piece of ice, and further low noise can be realized.

  Moreover, in order for each force applied to the cloudy ice part 18 by each cloudy ice cutting part disk to be separated sufficiently in time, the rising speed of the cloudy ice cutting wedge 31 or the descending speed of the ice tray 11 may be slowed down sufficiently. It is obvious that lower noise is realized by the reduction in speed.

  As described above, in the present embodiment, the same effect as in the fifth embodiment can be obtained. Further, in this embodiment, the side surface of the cloudy ice cutting wedge 31 is as shown in FIG. Since the slope shape has a gentle slope and the height differs depending on the location, the opening connecting the transparent ice part 17 and the cloudy ice part 18 is sequentially cut from the right side by applying a shearing force. As a result, the cutting time of each ice becomes different, and even when cutting eight ices, the noise can be the noise level when cutting one piece of ice, and a further low noise can be realized.

Embodiment 7 FIG.
FIG. 14 and FIG. 15 are explanatory views of the ice tray for explaining the cloudy ice cutting part as seen from below.

  As shown in FIG. 14, a cloudy ice cutting wedge 32 is provided below the ice tray 11 and outside the cloudy ice part 18. The cloudy ice cutting wedge 32 has a wedge shape in which the width of the front end is narrow and the width of the rear end is wide in the length direction (horizontal direction) of the ice tray 11. That is, the cloudy ice cutting wedge 32 is gradually narrowed in the length direction of the ice tray 11 toward the tip. The cloudy ice cutting wedge 32 moves in the direction of arrow A in FIG. 14, or conversely, the ice tray 11 moves in the direction of arrow A in FIG. The cloudy ice portion 18 of the ice tray 11 normally extends in the horizontal direction as shown in FIG. 14A. At this time, the cloudy ice cutting wedge 32 rises in the direction of arrow A in FIG. 14, or conversely, if the ice tray 11 moves in the direction opposite to the arrow A in FIG. The cloudy ice portion 18 is pushed by the rear end portion and closes inward as shown in FIG.

  As shown in FIG. 15, a cloudy ice cutting wedge 32 is provided below the ice tray 11 and between the two cloudy ice parts 18. The cloudy ice cutting wedge 32 has a wedge shape in which the width of the front end is narrow and the width of the rear end is wide in the length direction (horizontal direction) of the ice tray 11. That is, the cloudy ice cutting wedge 32 is gradually narrowed in the length direction of the ice tray 11 toward the tip. The cloudy ice cutting wedge 32 moves in the direction of arrow A in FIG. 15, or conversely, the ice tray 11 moves in the direction of arrow A in FIG. The cloudy ice part 18 of the ice tray 11 normally extends in the horizontal direction as shown in FIG. 15A. At this time, the cloudy ice cutting wedge 32 rises in the direction of arrow A in FIG. 15, or conversely, if the ice tray 11 moves in the direction opposite to arrow A in FIG. The cloudy ice part 18 is pushed by the rear end part and opens toward the outside along the shape of the cloudy ice cutting wedge 32 as shown in FIG.

  The operation will be described. An example of the ice tray structure of the present invention will be described with reference to FIG. Before the ice making drive device 12 starts rotating and the ice making tray 11 is rotated and twisted, the ice 32 is separated from the ice making plate 11 by moving the cloudy ice cutting wedge 32 in the direction indicated by the arrow A (on the right side in FIG. 14). Or the ice tray 11 moves in the opposite direction of arrow A (on the left side in FIG. 14) to apply a force so that the cloudy ice part 18 closes inward, and the transparent ice part 17 and the cloudy ice part 18 are moved. The opening to be connected is sheared and cut. Thereafter, the ice making drive 12 starts rotating, and the ice tray 11 is rotated and twisted, so that only the transparent ice portion 17 from which the cloudy ice portion 18 has already been cut is detached from the ice tray, so the ice tray 11 is twisted. This makes it possible to produce transparent ice without generating a loud noise that breaks the ice.

  An example of the ice tray structure of the present invention will be described with reference to FIG. Before the ice making drive device 12 starts rotating and the ice making tray 11 is rotated and twisted, the ice 32 is separated from the ice making plate 11 by moving the cloudy ice cutting wedge 32 in the direction of arrow A (on the right side in FIG. 15). ) Or the ice tray 11 moves in the opposite direction of the arrow A (left side in FIG. 15), so that a force is applied to open the cloudy ice part 18 outward, and the transparent ice part 17 and the cloudy ice part 18 are moved. The opening to be connected is sheared and cut. Thereafter, the ice making drive 12 starts rotating, and the ice tray 11 is rotated and twisted, so that only the transparent ice portion 17 from which the cloudy ice portion 18 has already been cut is detached from the ice tray, so the ice tray 11 is twisted. This makes it possible to produce transparent ice without generating a loud noise that breaks the ice.

  As described above, in the present embodiment, a separate shape is provided in each of the particle shapes of the ice tray 11 so as to divide the ice particles into the upper and lower portions while leaving the connecting portions, and the cloudy ice portion 18 is made into ice by cooling from above. The ice is moved to the lower part of the plate 11 to produce transparent ice on the upper part. In the deicing process after the ice making is completed, the connecting part is cut to remove the transparent ice, and the remaining cloudy ice is newly supplied to the ice making plate 11. In an ice making apparatus that melts and mixes with fresh water and then makes ice again, the ice making tray 11 is provided with a wedge 32 for cutting off the cloudy ice. The cloudy ice cutting wedge 32 can cut only the cloudy ice part 18 by applying a shearing force to the joint of the cloudy ice part 18 and the transparent ice part 17. Thereby, generation | occurrence | production of a loud sound when breaking ice with the big force which tears off the transparent ice part like the past can be prevented, and low noise can be implement | achieved.

Embodiment 8 FIG.
FIG. 16 is a diagram showing the eighth embodiment, and shows the positional relationship between the ice tray 11 viewed from the lower surface and the cloudy ice cutting wedge 32 shown in FIG. As shown in FIG. 16, two cloudy ice cutting wedges 32 are provided for each grain shape of the ice tray 11. At this time, the cloudy ice cutting wedge 32 for each grain shape of the ice tray 11 is provided with its position slightly shifted for each grain shape. As shown in FIG. 16, the cloudy ice cutting wedge 32 for the grain shape on the right side in FIG. 16 is provided beside the cloudy ice part 18, and the length of the overlapping portion in the length direction is set to α, for example, And The cloudy ice cutting wedge 32 for the grain shape in the second stage from the right is provided from the side to the rear of the cloudy ice part 18, and the length of the overlapping portion in the length direction is shorter than α. It has become. The cloudy ice cutting wedge 32 for the grain shape of the third stage from the right is provided behind the cloudy ice part 18 and there is no overlapping portion in the length direction, and the cloudy ice cutting wedge 32 and the cloudy ice The length of the deviation in the length direction from the portion 18 is γ. The cloudy ice cutting wedge 32 corresponding to the grain shape of the fourth stage from the right is provided further rearward of the cloudy ice part 18, and there is no overlapping portion in the length direction as in the third stage, but the cloudy ice The length of the longitudinal displacement between the cutting wedge 32 and the cloudy ice part 18 is δ which is larger than γ.

  From FIG. 16, the cloudy ice cutting wedge 32 moves in the direction of arrow A (right side as viewed in FIG. 16), or the ice tray 11 moves in the opposite direction of arrow A (left side as viewed in FIG. 16). First, a force is applied so that the right cloudy ice part 18 on the right side in FIG. 16 closes inward, and the opening that connects the transparent ice part 17 and the cloudy ice part 18 is sheared and cut. Next, a force is applied so that the cloudy ice part 18 of the second grain shape from the right side closes inward, and the opening connecting the transparent ice part 17 and the cloudy ice part 18 is sheared and cut, Next, from the right side, the third and fourth steps are sequentially cut to the opening connecting the transparent ice part 17 and the cloudy ice part 18 with a shearing force. As a result, the cutting time of each ice is different, and even when cutting eight ice pieces, the noise level is sufficient to cut one piece of ice, and further low noise can be realized.

  Also in the configuration of FIG. 15, by applying the configuration of the present embodiment, a shearing force is applied to the ice in order from the right side, and low noise can be realized.

  In FIG. 16, the ice is cut sequentially from the right side to the left side in FIG. 16, but the order is not limited, and the ice may be cut from anywhere.

  Further, in order for the respective forces applied to the cloudy ice part 18 by each cloudy ice cutting part disk to be sufficiently separated in time, the moving speed of the cloudy ice cutting wedge 32 or the moving speed of the ice tray 11 may be sufficiently slowed down. It is obvious that lower noise is realized by the reduction in speed.

  As described above, in the present embodiment, the same effects as those of the seventh embodiment can be obtained. Further, in the present embodiment, the cloudy ice cutting wedge 32 is formed as shown in FIG. The cloudy ice cutting wedge 32 for each grain shape of the dish 11 is provided with a slightly shifted position for each grain shape, and the length of the overlapping portion in the length direction differs depending on the location. In order, the transparent ice part 17 and the cloudy ice part 18 are sequentially cut by the shearing force applied to the opening part. As a result, the cutting time of each ice is separated, and even when four pieces of ice are cut, the noise is ice. The noise level at the time of cutting one piece is sufficient, and further low noise can be realized.

Embodiment 9 FIG.
FIG. 17 is a diagram showing the ninth embodiment, and is an explanatory view of an ice making tray for explaining the cloudy ice cutting part as seen from the side (vertical) direction. An example of the ice tray structure of the present invention will be described with reference to FIG. 3 to 16, the number of cloudy ice portions 18 is two for one ice (grain shape), but it is one in FIG. 17. The ice tray 11 is provided with a rotating shaft 12a extending in the length direction, and is configured to rotate in both directions around the rotating shaft 12. A ceiling protrusion 33 is provided on the ceiling above the ice tray 11, and the cloudy ice portion 18 collides with the ceiling protrusion 33 when the ice tray 11 rotates about the rotation shaft 12 a. .

  The operation will be described. The rotating shaft 12a of the ice making drive device starts rotating, and rotates the ice making tray 11 about 150 to 180 degrees in the upper right direction toward FIG. 17 (in the direction of arrow A (counterclockwise as shown in FIG. 17A)). )), As shown in FIG. 17 (b), the cloudy ice part 18a comes into contact with the ceiling protrusion 33 provided on the ceiling of the ice tray setting part, and the cloudy ice part 18a and the transparent ice part 17a A shearing force is applied to the joint portion, and the transparent ice portion 17a is separated from the cloudy ice portion 18a and falls from the ice tray. Next, the rotating shaft 12a of the ice making drive device starts rotating, and the ice making tray 11 is rotated in the upper left direction toward FIG. 17 (rotating in the direction of arrow B (clockwise) as shown in FIG. 17). Thus, as shown in FIG. 17 (c), the cloudy ice part 18 comes into contact with the ceiling protrusion 33 of the ceiling of the ice tray setting part, and a shearing force is applied to the joint between the cloudy ice part 18b and the transparent ice part 17b, The transparent ice part 17b is separated from the cloudy ice part 18b and falls from the ice tray. By adopting such a mechanism, it is possible to generate transparent ice without generating a loud noise that breaks ice by twisting the ice tray 11.

  As described above, in the present embodiment, a separate shape is provided in each of the particle shapes of the ice tray 11 so as to divide the ice particles into the upper and lower portions while leaving the connecting portions, and the cloudy ice portion 18 is made into ice by cooling from above. The ice is moved to the lower part of the plate 11 to produce transparent ice on the upper part. In the deicing process after the ice making is completed, the connecting part is cut to remove the transparent ice, and the remaining cloudy ice is newly supplied to the ice making plate 11. In an ice making apparatus that melts and mixes with fresh water and then makes ice again, the ice making tray 11 is provided to rotate left and right by the rotating shaft 12a, and contacts the ceiling protrusion 33 provided on the ceiling by rotating. Therefore, before the ice tray 11 is rotated and twisted, it is sheared by the contact between the cloudy ice part 18 and the ceiling projection 33 to the joined part of the cloudy ice part 18 and the transparent ice part 17. Cut only the cloudy ice part 18 with force It can be. Thereby, generation | occurrence | production of a loud sound when breaking ice with the big force which tears off the transparent ice part like the past can be prevented, and low noise can be implement | achieved.

It is the block diagram which showed the structure of the refrigerator which concerns on Embodiment 1 of this invention. It is the block diagram which showed the structure of the refrigerator which concerns on Embodiment 1 of this invention, and is the figure explaining the ice making system. It is explanatory drawing which showed the structure of the ice tray of the refrigerator which concerns on Embodiment 1 of this invention. It is a figure which shows the structure of the ice-making tray of the refrigerator which concerns on Embodiment 1 of this invention, and is explanatory drawing which looked at the ice-making tray for demonstrating a cloudy ice cutting mechanism from the horizontal vertical direction. It is a figure which shows the structure of the ice-making tray of the refrigerator which concerns on Embodiment 1 of this invention, and is explanatory drawing which looked at the ice-making tray for demonstrating a cloudy ice cutting mechanism from the horizontal vertical direction. It is a figure which shows the structure of the ice tray of the refrigerator which concerns on Embodiment 1 of this invention, and is explanatory drawing which looked at the ice tray for demonstrating a cloudy ice cutting mechanism from the vertical lower surface direction. It is a figure which shows the ice tray of the refrigerator which concerns on Embodiment 2 of this invention, and is an example of the effect in the case where the phase of the rotation position with respect to the center of the cloudy ice cutting part disk of each stage is shifted. It is ice-plate making structure explanatory drawing shown regarding the eyes. It is a figure which shows the ice tray of the refrigerator which concerns on Embodiment 3 of this invention, and is explanatory drawing which looked at the ice tray for demonstrating a cloudy ice cutting mechanism from the horizontal vertical direction. It is a figure which shows the ice tray of the refrigerator which concerns on Embodiment 3 of this invention, and is explanatory drawing which looked at the ice tray for demonstrating a cloudy ice cutting mechanism from the horizontal vertical direction. It is a figure which shows the ice tray of the refrigerator which concerns on Embodiment 3 of this invention, and is explanatory drawing which looked at the ice tray for demonstrating a cloudy ice cutting mechanism from the vertical lower surface direction. It is a figure which shows the ice tray of the refrigerator which concerns on Embodiment 4 of this invention, and is an example of the effect in the case where the phase of the rotation position with respect to the center of the cloudy ice cutting part disk of each stage is shifted. It is explanatory drawing shown regarding the eyes. It is a figure which shows the ice tray of the refrigerator which concerns on Embodiment 5 of this invention, and is explanatory drawing which looked at the ice tray for demonstrating a cloudy ice cutting mechanism from the horizontal vertical direction. It is a figure which shows the ice tray of the refrigerator which concerns on Embodiment 6 of this invention, and is explanatory drawing which showed the positional relationship of the ice tray and the cloudy ice cutting wedge seen from the side surface (side). It is a figure which shows the ice tray of the refrigerator which concerns on Embodiment 7 of this invention, and is explanatory drawing which looked at the ice tray for demonstrating a cloudy ice cutting mechanism from the downward direction. It is a figure which shows the ice tray of the refrigerator which concerns on Embodiment 7 of this invention, and is explanatory drawing which looked at the ice tray for demonstrating a cloudy ice cutting mechanism from the downward direction. It is a figure which shows the ice tray of the refrigerator which concerns on Embodiment 8 of this invention, and is explanatory drawing which showed the positional relationship of the ice tray and the cloudy ice cutting wedge seen from the lower surface. It is a figure which shows the ice tray of the refrigerator which concerns on Embodiment 8 of this invention, and is explanatory drawing which looked at the ice tray for demonstrating a cloudy ice cutting mechanism from the side surface (vertical) direction. It is explanatory drawing which showed the ice tray in the conventional refrigerator, and is the figure which showed the deformation | transformation of the ice tray and the movement of ice when taking out transparent ice by twisting an ice tray and deforming an ice tray. It is explanatory drawing which showed the ice tray in the conventional refrigerator, and is the figure which showed the mode of the ice which remains in the ice tray after deicing.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Refrigerator main body, 2 fan, 3 cooler, 4 cold ventilation duct, 5 return duct, 6 temperature sensor, 7 air volume regulator, 8 water supply tank, 9 water supply pump, 10 water supply pipe, 11 ice tray, 12 ice making drive device, 13 frame, 14 ice making thermistor, 15 ice detecting lever, 16 separator member, 17 transparent ice part, 18 cloudy ice part, 22 operation panel, 23 control board, 24 microcomputer, 25 LED, 30 cloudy ice cutting part, 31 cloudy ice Cutting wedge, 32 cloudy ice cutting wedge, 33 ceiling protrusion, 100 cold storage room, 200 freezing room, 300 vegetable room, 400 switching room, 500 ice making room.

Claims (1)

Within each grain shape of the ice tray, a separate shape is provided that splits the ice grains up and down leaving the connecting part, and by cooling from above, cloudy ice is generated at the bottom of the ice tray and transparent ice is generated at the top, In the process of deicing after completion of ice making, the connecting part is cut to clear ice, and the remaining cloudy ice is melted and mixed with water supplied to a new ice tray, and then the ice making device is used to make ice again. Prepared,
The ice making device includes a cloudy ice part cutting means for cutting the cloudy ice from the transparent ice before the ice removal ,
The cloudy ice part cutting means is provided for each grain shape of the ice tray, and is composed of a disk that rotates about a rotating shaft provided eccentrically,
When the disk rotates and contacts the cloudy ice part, a pressing force is applied to the cloudy ice part, and the cloudy ice is cut from the transparent ice,
The refrigerator characterized by shifting the cutting time which cuts the cloudy ice and the transparent ice for every ice by shifting the phase of each rotation position for every disk with respect to each grain shape of the ice tray .

Images