JP2550008Y2 - Water tray tilting mechanism of ice machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water tray tilting mechanism for an ice making machine, and more particularly, to a plurality of ice making projections projecting from a lower surface of an ice making board into ice making water in an ice making chamber defined inside the water tray. In an ice machine in which an inverted dome-shaped ice block is formed around the ice making projection as the ice making operation proceeds, the water tray can be smoothly tilted and returned to a horizontal position. The present invention relates to a tilting mechanism for a water dish.

[0002]

2. Description of the Related Art In an automatic ice maker for continuously producing a large number of ice blocks such as ice cubes, many types are proposed as ice making methods, and an appropriate method is adopted according to the application. For example, a large number of partition plates are arranged vertically and horizontally to define a large number of ice making compartments that open downward, and ice making water is jetted and supplied from the water tray arranged below to the corresponding ice making compartments to freeze. Sprinkling ice making water from below into these ice making compartments without using a closed-cell type ice machine or ice tray that forms ice cubes in each ice making compartment cooled by the evaporator tube connected to the system. Thus, an open-cell type ice maker that forms ice cubes in each of the small chambers, and ice making water flowing down from above one side of an ice maker plate placed upright, thereby forming a kamaboko-shaped ice block on the surface of the ice maker plate. 2. Description of the Related Art There are known a large number of water-fall type ice makers.

Each of the above three types of ice making machines is provided with an ice making water tank for storing a required amount of ice making water, and the ice making water in the tank is pumped by a pump to make the ice making room or the upright of the ice making unit. A forced circulation mechanism is employed in which ice water that has been supplied to the ice making plate and has not been frozen is recovered in the tank and then sent out again to the ice making unit. Therefore, these ice machines require additional equipment such as an ice making water tank and a pump for circulating the ice making water, which complicates the configuration, increases the production cost, and contributes to an increase in size. On the other hand, ice making water is stored in a water dish at a required level, and an ice making projection projecting from the lower surface of an ice making substrate provided with an evaporating tube is immersed in the ice making water, so that the ice making projection is formed. A simple ice maker in which an ice block is formed has already been proposed. In this ice machine,
An ice maker that has a simplified structure and can reduce manufacturing costs because it does not require a mechanism for circulating the ice making water between the water tray and the ice making water tank during the ice making operation. Has the advantage that it can be manufactured.

[0004]

As described above, a simple ice maker in which ice blocks are formed around the projections only by immersing a large number of ice-making projections cooled and held in ice-making water in a water dish is simple. There are significant advantages that can be achieved with the configuration. In this ice making machine, when the ice making operation is completed, the water tray is tilted to stop it at a required angle position, and after the ice blocks fall from the ice making projections by the deicing operation, the tilted water tray is raised. It is essential to have a mechanism for returning to a horizontal position.

Here, the present applicant has already filed a plurality of applications in connection with the ice maker having the above-described configuration, and the ice maker employs a water tray tilting mechanism having the following configuration. I have. That is, the supporting pieces are respectively disposed on both side surfaces of the water tray along the tilting direction, and the protruding pieces are formed so as to protrude from the respective supporting pieces at positions off the water tray. The pivots fixed to the ice making machine main body are inserted into the through holes formed in the projecting pieces, respectively, so that the water tray is pivotally supported so as to be tiltable. Further, a cam piece is formed at a position off the water plate on one of the support pieces, and a cam groove formed in the cam piece protrudes from a cam disk rotated by an actuator motor provided in the ice making machine main body. Cam follower is slidably engaged. Therefore, if the actuator motor is rotated, the water tray can be tilted obliquely downward about the pivot shaft and returned diagonally upward under the accompanying cam action.

In the tilting mechanism of the water tray, the cam piece extends at a predetermined length in a direction along the tilting direction of the water tray, and this has been an obstacle to downsizing the machine. In addition, since the water tray is tilted and tilted and returned via one of the support pieces disposed on the side surface thereof, a load is applied to the support piece in a biased state, and the tilting and tilting return of the water dish are performed. May not be performed smoothly. Furthermore, the water tray cannot be held in a horizontal position, and the ice making projections are not immersed in the ice making water stored in the ice making room at a uniform depth. As a result, the size of the ice blocks may be varied.

In the ice making machine, a water tray is disposed inside the heat-insulated box, and a cam piece of a support piece disposed on the water tray is extended to the outside of the box. It is configured to be connected to a cam disk arranged outside the box. In this case, since the cam piece moves in the up-down direction, it is pointed out that the heat-insulating treatment of the insertion portion in the box cannot be sufficiently performed.

[0008]

[Purpose of the present invention] The present invention involves immersing an ice making projection cooled by an evaporating tube in ice making water stored in an ice making chamber in a water dish.
In view of the above-mentioned drawbacks inherent in an ice maker that forms an ice block around the ice making projections, it has been proposed to suitably solve this, and it has been proposed to smoothly tilt and return the tilt of the water tray. It is another object of the present invention to provide a water tray tilting mechanism that can reduce the size of a machine.

[0009]

SUMMARY OF THE INVENTION In order to overcome the above-mentioned problems and achieve the intended object, the present invention provides an evaporating pipe connected to a refrigeration system having a compressor, a condenser and the like, and the evaporating pipe is provided on an upper surface. An ice making board provided with a large number of ice making sections projecting downwardly at predetermined intervals on the lower surface, and an ice making section defined inside by being pivotally supported by the ice making machine main body and always maintaining a horizontal posture. A water dish in which the ice making unit is immersed in ice making water in the room, and when the ice making water freezes around the ice making unit to form a required ice block,
An ice making machine configured to tilt the water tray obliquely downward to discharge the ice blocks, and then raise and return the water tray to a horizontal position again, wherein the ice tray is formed along one side intersecting the tilt direction of the water tray; A shaft supporting portion rotatably supported by the ice making machine main body; and a pivotally supported rotatably supported by the ice making machine main body, one end of which is integrally rotatable with the shaft end of the shaft supporting portion. A pivot shaft formed with a lever piece extending in the radial direction at the other end, and an actuator motor disposed on the ice making machine main body and rotating a substantially circular plate body. The actuator motor has one end rotatably loosely fitted to the engagement projection protruding from the lever piece, and the other end rotatably supported at the eccentric position of the plate body. By rotating the plate body by means of The rotated in forward and reverse directions, the tilting diagonally downward the water tray about the shaft support portion, characterized by being adapted to lift back to a horizontal position.

[0010]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a water tray tilting mechanism for an ice making machine according to the present invention. For convenience of description, “front and rear” and “left and right” are referred to when the ice maker is viewed from the front.

(Schematic Configuration of Ice Making Machine) FIGS. 2 and 8 are a cross-sectional view and a perspective view schematically showing the overall configuration of an ice making machine employing a water tray tilting mechanism according to an embodiment. The interior of the housing 10 constituting the ice making machine main body includes a lower machine room 12 in which a refrigerating machine such as the compressor CM and the condenser 11 is housed, and a heat insulating material located above the lower machine room 12, and an ice storage room therein. Box-shaped ice storage 14 defining 83
And an ice making unit 15 disposed above the ice storage 14. Ice making unit 1
5 includes an ice tray 16 for storing ice making water at a predetermined level and an ice making substrate 18 having ice making projections 17 immersed in the ice making water, as will be described later with reference to FIGS. When the operation mode is switched to the deicing operation, the ice tray is tilted at a predetermined angle to discharge the ice making water in the water tray 16 to the outside through the drainage receiving portion 19 and the drainage pipe 20, and to remove the ice blocks 21 from the ice storage chamber 8
3 can be released. The ice storage 14 is provided with an ice block discharging device 13 to be described later, and the device 13 is configured to discharge the ice blocks 21 stored in the ice storage chamber 83 to the outside.

(External Structure of Housing) As shown in FIG. 8, the housing 10 includes a main frame 22 surrounding the above-described members and a front panel 23 disposed on the front surface of the frame 22. It has a slim shape with a very short width as a whole. The front panel 23 is formed of a synthetic resin in the shape shown in the figure, and is located at a substantially intermediate position in the height direction thereof.
4 and the opening 2 corresponding to the discharge port 14a of the ice block 21
3a is opened downward (see FIG. 2). A container-like mounting table 24 is detachably mounted below the opening 23a, and a receiver such as a cup is mounted on the mounting table 24 when the ice block 21 is taken out. This mounting table 2
A large number of slits 24a are formed on the upper surface of 4 to prevent water drops falling from the discharge port 14a from being collected to prevent the surrounding area from being polluted. The front panel 23 extending above the opening 23a has a power lamp L and a first
The push button 25 of the switch SW _{1 is provided, and while} the push button 25 is pressed to turn on the switch SW ₁ , the ice blocks 21 stored in the ice storage chamber 83 by operating the ice block discharging device 13 are removed. Discharge port 14a and opening 23a
Is set to release via

An opening (not shown) communicating with the lower machine room 12 is opened on the bottom surface of the housing 10, and the opening is covered by a filter member 26 which is detachably mounted on the housing 10. It has become. This filter member 2
6 functions to collect dust in the outside air introduced into the machine room 12 for air cooling of the condenser 11 and to prevent the cooling ability from being lowered due to clogging of the condenser 11. Note that the filter member 26 is configured to be easily attached and detached from the front side of the housing 10.

(Regarding the Cover) As shown in FIG.
Is detachably disposed, and on the front side of the cover body 27,
An actuator motor AM for tilting the water tray 16 in the ice making unit 15, a motor RM for rocking the rocking plate 28 (described later), and a motor GM for discharging the ice block discharging device 13 are collectively provided. Each of the motors AM, RM, GM and the members attached thereto are disposed on the cover body 27.
By removing the front panel 23, maintenance can be easily performed. When assembling the automatic ice maker, the cover 27 can be attached to the front surface of the ice storage 14 in a state where the motors AM, RM, and GM are arranged on the cover 27 in advance. There is an advantage that can be shortened.

(Regarding the Ice Making Unit) FIG. 4 shows the details of the ice making unit 15 in a longitudinal section. The water tray 16 has the shape shown in FIG. 1 and has an ice making chamber 29 defined therein. The ice making water can be stored at a predetermined level therein. That is, the ice making room 2
9 is defined by a rectangular bottom surface 16a of the water tray 16 and wall surfaces 16b, 16c, 16d, 16e standing upright on all sides thereof, and outside the upright wall 16e located on the right side in FIG. A plurality of shaft support portions 30 are aligned along and integrally formed. As shown in FIG. 6, the shaft supporting portion 30 has through holes 32a, 32a formed in brackets 32, 32 for suspending and supporting the ice making board 18 above the ice storage 14.
The water tray 16 is configured to be rotatable in the short direction (width direction of the ice making machine) around the shaft support 30. An ice making water supply pipe 49 is detachably provided at an appropriate position of the ice making substrate 18 so that a water supply valve WV is opened at a later-described timing to supply a predetermined amount of ice making water to the ice making chamber 29. (See FIG. 20). In addition,
Since the ice making unit 15 can be easily removed from the bracket 32 by removing the cover body 27 from the ice storage 14, there is an advantage that assembly and maintenance management become easy.

A square hole 30a is formed in the shaft support portion 30 located on the front side, and a square shaft 33a protruding from a shaft end of a pivot shaft 33 described later is fitted into the square hole 30a. The pivot shaft 33 is rotatably supported by the cover body 27, and the actuator motor A
With the rotation of M, the water tray 16 can be tilted obliquely downward and returned obliquely upward about the shaft support 30 as shown in FIGS. 15 to 18. As described above, the water tray 16 is tilted in the width direction of the ice maker, so that the width of the ice maker can be reduced as described above. Since the shaft support 30 is formed integrally with the water tray 16, and the water support 16 is tilted and returned by rotating the shaft support 30, the rigidity of the water plate itself can be increased. At the same time, smooth tilt and tilt return can be performed. Moreover,
Since the shaft support 30 is formed along the longitudinal direction of the water tray 16, the load of the water tray 16 is uniformly applied to the shaft support 30, and the water support 16 is horizontally tilted without tilting in the longitudinal direction. It can be held in a posture.

(Regarding the tilting mechanism of the water tray) At a position corresponding to the shaft supporting portion 30 of the water tray 16 in the cover body 27, a cylindrical bearing portion 34 protruding toward the front side is protrudingly provided. The turning support shaft 33 is rotatably inserted into a through hole 34 a formed in the shaft support 30, and a square shaft 33 a protruding from the shaft end is inserted into the square hole 30 a of the shaft support 30. A lever piece 33b extending in the radial direction is integrally formed at the front end of the pivot shaft 33, and an engagement projection 33c is provided on the front face of the lever piece 33b. As shown in FIGS. 1 and 3, a rotation shaft extending to the front side of the bracket 35 of the actuator motor AM disposed on the cover body 27 via the bracket 35 has a required diameter with a part cut in the circumferential direction. A cam plate 36 made of a disc is provided so as to rotate integrally. One end of a connecting rod 37 is eccentrically pivotally supported on the front surface of the cam plate 36,
An engaging projection 33c of a lever piece 33b formed on the turning support shaft 33 is slidably and loosely fitted into a long hole 37a formed at the other end of the connecting rod 37. Therefore, by rotating the actuator motor AM in a predetermined direction, the turning support shaft 33 reciprocates at a required angle via the cam plate 36 and the connecting rod 37, whereby the water tray 16 is tilted and tilted and returned. The actuator motor AM includes a water tray 16
Since the shaft support portion 30 serving as the tilting center of the shaft is rotated, a shaft having a small output can be used.

The water tray 16 is in a state where the engagement projection 33c of the lever piece 33b is in contact with the lower end edge of the long hole 37a of the connecting rod 37 (the side facing the pivotal support portion with the cam plate 36) (FIG. 5).
) Is set to maintain the horizontal posture. The front end of the engagement projection 33c has a long hole 3 of the connecting rod 37.
An elliptical restricting portion 33d that can be inserted into the protrusion 7c
Are disposed so as to extend in the radial direction with respect to
3c is inserted into the elongated hole 37a, and the engaging protrusion 33c is
It is configured so that the connecting rod 37 does not easily come off. Further, by allowing the lever piece 33b to move relative to the connecting rod 37 by the length of the elongated hole 37a, an error in the position between the lever piece 33b and the connecting rod 37 when the water tray 16 is stopped to be described later is allowed. It has become. A torsion spring 39 for urging a mounting jig 38 provided with the rocking motor RM on a rear surface of the lever piece 33b in a predetermined direction (both will be described later).
An engagement piece 33e with which one end is engaged is protruded.

(Refrigeration System) FIG. 10 shows a schematic configuration of a refrigeration system used in an ice maker. The vaporized refrigerant compressed by the compressor CM is liquefied by the condenser 11 through the discharge pipe 40, dehumidified by the dryer 41, and then decompressed by the capillary 42. Then, it flows into the evaporating tube 31 and expands at once, and exchanges heat with the ice making substrate 18 to cool each ice making projection 17 to below freezing. The vaporized refrigerant evaporated in the evaporating pipe 31 and the unevaporated liquefied refrigerant flow into the accumulator 43 in a gas-liquid mixed phase state to be separated into gas and liquid, and the gas-phase refrigerant passes through the suction pipe 44 to the compressor CM.
And the liquid-phase refrigerant is stored in the accumulator 43. Further, a hot gas pipe 45 branched from the discharge pipe 40 of the compressor CM is connected to the inlet side of the evaporation pipe 31 via a hot gas valve HV. This hot gas valve HV
Is opened during the deicing operation, and the high-temperature refrigerant (hereinafter, referred to as “hot gas”) discharged from the compressor CM is bypassed to the evaporating pipe 31 through the hot gas pipe 45, and each ice making protrusion 1
By heating the 7, each ice block 21 is dropped by its own weight. The hot gas flowing out of the evaporating pipe 31 heats and evaporates the liquid-phase refrigerant retained in the accumulator 43, and returns the refrigerant as a gas-phase refrigerant from the suction pipe 44 to the compressor CM again. Note that reference numeral FM in the drawing indicates a fan motor for the condenser 11.

(Regarding Drainage Structure of Water Tray) As shown in FIGS. 4 and 9, the water tray 16 has a water discharge portion for discharging the ice making water in the ice making chamber 29 to the outside when the water tray 16 is tilted. Is formed. That is, an auxiliary chamber 46 recessed toward the rear side is defined in the vicinity of the tilting lower end side of the upright wall 16c located on the rear side of the water tray 16, and the auxiliary chamber 46 is required outside the auxiliary chamber 46 (rear side). A drainage pipe 47 of a length is connected for communication. Below the drainage pipe 47, a drainage receiving portion 19 that receives the discharged water and discharges it to the outside is formed on the rear side of the ice storage 14. The auxiliary chamber 46 and the ice making chamber 29
It is defined by a dam plate 48 lower than the upright wall 16c. Therefore, the ice making water supplied to the water tray 16 overflows from the upper end surface of the dam plate 48 and can be discharged to the drain receiving portion 19 through the drain pipe 47. In other words, the ice making water stored in the ice making chamber 29 is maintained at a predetermined level by the dam plate 48. When the operation is switched to the deicing operation described later, the water tray 16 is tilted obliquely downward to discharge the ice making water through the drain pipe 47 as shown in FIG. And at the position where the water tray 16 stops tilting,
Part of the ice making water remains as it is by the dam plate 48 (FIG. 1).
6), this residual water can be mixed with water supplied from the ice making water supply pipe 49 for the next ice making operation, thereby promoting the temperature reduction of the ice making water as a whole.

When the water tray 16 tilts obliquely downward, the drain pipe 47 abuts on the upper edge of the drainage receiving portion 19 on the side of the ice storage chamber, and also serves as a stopper for holding the water tray 16 in an inclined state. Function. At this time, the engaging projections 3 of the turning support shaft 33 are inserted into the long holes 37a of the connecting rod 37 in the tilting mechanism.
3c is movable within a required range,
Even if there is a deviation between the tilt stop position and the rotation stop position of the actuator motor AM, it is possible to prevent a load from being applied to the tilt mechanism.

An ice making board 18 is horizontally arranged and fixed above the ice storage 14 via a plurality of brackets 32. The ice making board 18 is drawn out of a refrigeration system housed in the machine room 12 on the upper surface of the ice making board 18. The evaporating tube 31 is arranged in a meandering manner. Also, a number of ice making projections 17 are provided on the lower surface of the ice making substrate 18 so as to hang down at required intervals, and the ice making projections 17 are immersed in ice making water stored in the water tray 16 during the ice making operation. ing. By the operation of the refrigeration system, heat is exchanged with the refrigerant in the evaporating tube 31. As a result, the ice making projections 17 are cooled and kept at 0 ° C. or less. As a result, as shown in FIG. 21 will be formed. The ice making board 18 is provided with a plurality of through holes 18a to improve heat exchange efficiency and reduce weight.

(Regarding Cam Control Mechanism) As shown in FIG. 5, a first cam portion 50 and a second cam portion 51 are provided on a back surface of the cam plate 36 provided on the actuator motor AM, which faces the bracket 35. It is formed so as to be deviated in the radial direction. The bracket 35 has a first cam portion 50 and a second cam portion 51 respectively corresponding to the first cam portion 50 and the second cam portion 51.
The second switch SW ₂ and the fourth switch SW ₄ is arranged, giving cam operating at the required timing with the rotation of the actuator motor AM, the water tray 1 by the motor AM
6, the stop of the tilt and the stop of the return, the opening of the hot gas valve HV, and the opening and closing of the water supply valve WV for replenishing ice making water are respectively controlled. That is, the first cam portion 5
The 0 and second cam portions 51 are formed by arc-shaped protrusions having a required radius and projecting in the axial direction. The lever member 52 extending from the second switch SW _2, together with contact with the first cam portion 50, so as to separate at a required timing from the first cam portion 50. When the second lever member 52 of the switch SW ₂ is brought into contact with the cam portion 50, of the switch O
N operations are performed. The second switch SW ₂ is connected to the relay X ₂ and the actuator motor AM as shown in the control circuit of FIG.
The control of the tilting stop and the return stop of the water tray 16 due to the above is controlled and the opening of the hot gas valve HV is controlled (described later). Note that the first cam portion 50 of the timing of the cam operation of the second switch SW _2, shown in the timing chart of FIG 20.

The lever piece 53 extending from the fourth switch SW ₄ comes into contact with the second cam portion 51 and separates at a required timing. When the lever member 53 of the fourth switch SW ₄ is brought into contact with the cam portion 51, ON operation of the switch is made. The fourth switch SW ₄ is connected to the water supply valve WV as shown in FIG. 11, and controls the opening of the water supply valve WV (described later). And the second cam portion 51 of the timing of the cam operation of the fourth switch SW _4, FIG. 2
0 is shown in the timing chart.

(Regarding Swinging Plate and Swinging Mechanism) Inside the ice making chamber 29 of the water tray 16, there is provided an upright wall 16d which is a rectangular bottom plate 54a which is the lower end side (left side) of the tilting of the water tray 16. A swing plate 54 having vertical rising portions 54b, 54c, 54d formed on three sides excluding the opposing side is swingably disposed, and is swingably driven up and down by rotation of a swing motor RM. Has become. The bottom plate 54a and the right rising portion 54 of the rocking plate 54
b, a large number of through holes 55 having a circular or square shape are formed at required intervals. The peripheral dimension of the rocking plate 54 is set slightly smaller than the internal dimension of the bottom surface 16a in the ice making chamber 29, and the projections 56, 56 formed on both sides in the upper longitudinal direction of the rising portion 54b are attached to the water tray 16. It is pivotally supported via pins 57, 57 (see FIG. 3). And water dish 1
In a state where the swing plate 54 is pivotally supported at 6, the swing plate 54 is placed in close contact with the bottom surface of the ice making chamber 29 as shown in FIG. Note that the drilling position of the through-hole 55 is the same as that of the adjacent ice making projection 17,
17 is set.

As shown in FIG. 3, an inverted L-shaped engaging piece 58 is formed integrally with a rising portion 54c located on the front side of the rocking plate 54, and an upper horizontal portion 58a of the upper horizontal portion 58a forms the upright wall 16b of the ice making chamber 29. And extends outward (see FIG. 1). Further, the cover body 27 at a position corresponding to the upper horizontal portion 58a.
A swing member 59 rotated by the swing motor RM is slidably inserted into the long hole 27a extending vertically. This swing member 5
The swing projection 59a is located at a position facing the back side of the cover body 27 of FIG.
Are eccentrically protruded, and can be engaged with and disengaged from below on the upper horizontal portion 58a of the rocking plate 54. Therefore, when the swing member 59 is rotated counterclockwise, the swing projection 59a rotates in a state of being engaged with the upper horizontal portion 58a as shown in FIG. When the swinging projection 59a comes off the upper horizontal portion 58a while the swinging plate 59 falls off the ice making chamber 29 by its own weight. That is, if the rocking motor RM is rotated during the ice making operation, the rocking plate 54 repeatedly swings up and down inside the ice making chamber 29 around the pins 57, 57, thereby constantly moving the ice making water. Can be.
Since the through hole 55 is formed in the rocking plate 54, the ice making water flows up and down through the through hole 55, so that a more active movement can be obtained.

Further, the rocking plate 54 is tilted integrally with the tilting of the water tray 16 during a de-icing operation described later, and the right rising portion 54b of the rocking plate 54 is An upright piece 60 extending upward is formed.
The rocking plate 54 is separated from the water tray 16 by engaging the upright pieces 60 with the ice making substrate 18 while the rocking plate 54 is tilting together with the water tray 16, and the tilting posture is fixed. (See FIG. 16).

(Regarding the Mounting Structure of the Swing Motor RM) As shown in FIGS. 3 and 5, one end of a flat mounting jig 38 is rotatably mounted on the bearing portion 34 protruding from the cover body 27. The rocking motor RM is provided on the front side near the end portion of the mounting jig 38 which is supported and is separated from the pivot portion. A motor RM is connected to a cam portion 59b of a swinging member 59 protruding forward from the through hole 27a. A projecting piece 38a is formed on the front side of the mounting jig 38 facing between the pivot portion and the swing motor RM.
One end 39a of a torsion spring 39 interposed in the bearing portion 34 is engaged with the lower end of 8a. An engaging piece 33e formed on the lever piece 33b faces close to the protruding piece 38a, and a torsion spring 3 is provided on an upper end of the engaging piece 33e.
9 is engaged with the other end 39b. Engagement piece 33e
In the state where the water tray 16 is supported in a horizontal posture, the upper end thereof faces upward from the upper end of the projecting piece 38a of the mounting jig 38 as shown in FIG. Therefore, at this time, the mounting jig 38 is always urged to rotate clockwise about the bearing 34 as a fulcrum under the elasticity of the torsion spring 39. When a required external force is applied to the oscillating motor RM, the mounting jig 38 can rotate by a required angle with the bearing 34 as a fulcrum.

That is, the torsion spring 39 engages with the engaging piece 58 of the oscillating plate 54 while the oscillating projection 59 a of the oscillating member 59 is engaged while the water tray 16 is in the horizontal position during the ice making operation. Functions to hold in a possible operating position. When the water tray 16 is tilted after switching from the ice making operation to the deicing operation,
The upper end of the engaging piece 33e of the lever piece 33b moves below the upper end of the protruding piece 38a of the mounting jig 38. At this time, the end 39b of the torsion spring 39 is
8a (see FIG. 19). Therefore, when the water tray 16 is tilted, the torsion spring 39 does not apply an urging force to the mounting jig 38.

An elongated hole 38b extending in the vertical direction is formed at an end of the mounting jig 38 remote from the pivot portion, and the regulating pin 6 protruding from the elongated hole 38b in correspondence with the cover 27.
1 is slidably inserted. The regulating pin 61 functions to regulate the range of rotation of the mounting jig 38. Under the elasticity of the torsion spring 39, the lower end of the long hole 38b always comes into contact with the regulating pin 61 and the swing member 59 faces the operating position (see FIG. 12).

(Switch S for detecting completion of ice making and deicing)
(W ₅ , Th ₁ ) The cover 27 is provided with a fifth switch SW ₅ for detecting completion of ice making, such as a microswitch, via a bracket 70, and the lever piece 62 is attached to the swing member 59.
In view of the descending locus of the cam portion 59b, the switch comes into contact with the cam portion 59b with the rotation of the mounting jig 38 (the swing motor RM) so that the switch can be switched. That is, as described later with reference to FIG.
When the ice block 21 grows around the ice making projection 17, the rocking plate 54 comes into contact with the ice block 21 when the rocking plate moves upward, and the rocking plate 54 is moved downward by the rocking motor RM via the engaging piece 58 and the rocking protrusion 59a. Will give a reaction force to the side. Mounting jig 38 Therefore rocking motor RM is disposed is rotated counterclockwise to the bearing portion 34 as a fulcrum, the lever member 62 of the cam portion 59b by the rotation process the fifth switch SW ₅
By pressing the, the contact of the switch SW _5, "a"
By switching from the side to the “b” side, the completion of ice making in the ice making unit 15 can be detected. The bracket 70 is
The position of the bracket 70 is vertically adjustable with respect to the cover body 27.
Adjustably configured to position of the lever piece 62 of the switch SW _5. Thereby, the ice blocks 2 formed on the ice making projections 17 are formed.
1 can be varied.

[0032] Here, when the fifth switch SW ₅ stops the rocking motor RM at the same time is switched to the contact "b" side, abuts the rocking protrusion engagement piece 58 of the rocking plate 54 5
9a hinders tilting of the swing plate 54. In Accordingly embodiment, the cam portion 59b of the swinging member 59, a fifth contact of the switch SW ₅ in a state where the swing motor RM is pivoted "a"
A switchable notch 59c is formed on the
The control for moving the swing projection 59a away from the tilt locus of the engagement piece 58 by c is performed. Also, this cutout portion 59c, when it faces the position where the swing protrusion 59a is separated from the upper horizontal portion 58a of the engaging piece 58, with a positional relationship facing the position corresponding to the lever piece 62 of the fifth switch SW ₅ It is formed on the cam portion 59b. That is,
After the rotation of the rocking motor RM is the fifth switch SW ₅ is switched to the contact "b" side by rotating the motor RM, arrives at a position where the notch portion 59c corresponds to the lever piece 62 of the switch SW ₅ contact of the switch SW ₅ is "a" Te
Is set to stop when the swing motor RM is switched to the side. As a result, the swing projection 59a is separated from the tilt locus of the engagement piece 58 in the swing plate 54, and does not hinder the tilt of the swing plate 54.

As shown in FIG. 4, the ice making unit 15
Ice on the upper surface of the substrate 18, the thermostatic switch Th ₁ for detecting the deicing completion is provided in the. The thermo-switch Th ₁ is switched to the contact "b" when the ice making substrate 18 is lowered to a predetermined temperature by the ice making operation, also a rapid increase in temperature at which ice mass 21 is dropped from the ice making projections 17 by the deicing operation Detects and changes the contact from “b” to “a”
Is set to switch to. At this time, the hot gas valve HV is closed and the actuator motor AM is rotated as described later.

(Regarding Ice Block Discharging Apparatus and Ice Storage Completion Detection Switch) An ice block discharging motor G
M is provided, and a screw 63 for carrying out ice blocks, which is rotationally driven by the motor GM, is provided so as to extend into the ice storage chamber 83. The projecting end of this screw 63
As shown in FIG. 2, the ice storage 14 is rotatably inserted into a concave portion 64 provided at a corresponding position and is set to rotate at a fixed position. The discharge motor GM rotates only while the push button 25 provided on the front panel 23 is pressed to turn on the first switch SW _1, and removes the ice block 21 stored in the ice storage chamber 83 by the screw 63. Outlet 1
4a.

As shown in FIG. 2, on the back surface of the cover 27, a regulating plate 65 corresponding to the position of the screw 63 and facing the ice storage chamber from the position where the discharge port 14a is formed.
Are rotatably suspended. The restriction plate 65 is pressed by the ice block 21 conveyed by the screw 63 to open the discharge port 14a to allow the release of the ice block 21 and to return to the initial position when the ice block discharging device 13 stops. To close the discharge port 14a, and functions to prevent outside air from entering the ice storage chamber 83 through the discharge port 14a. Further, a separating plate 68 is provided on the cover body 27 in the vicinity of the regulating plate 65. The separating plate 68 prevents the ice blocks 21 stored in the ice storage chamber 83 from being discharged from the discharge port 14a, and has a screw. Ice block 21 conveyed by 63
Is returned to the ice storage chamber 83 to prevent the discharge port 14a from being clogged. A drain pipe 69 is provided at the bottom of the ice storage 14 close to the position where the concave portion 64 is formed, and is configured to discharge the molten water from the ice block 21 to the outside of the refrigerator.

A detection plate 66 is rotatably supported on the lower surface of the water tray 16, and the detection plate 66 always has its open end side with respect to the bottom surface of the water tray 16, as shown in FIG. It is held in a state of being separated downward. A third switch SW ₃ for detecting the completion of ice storage is provided on the front surface of the water tray 16, and the lever piece 67 of the switch SW ₃ is always turned by a protruding piece 66 a formed at the front end of the detection plate 66. Is in a pressed state. Then, the detection plate 66 abuts on the ice block 21 in the process of tilting the water plate 16, and the water plate 1
Upon rotation in the clockwise direction with respect to 6, wherein the projecting piece 66a is turned ON to actuate the switch SW ₃ spaced from the lever piece 67, is set to detect the ice storage completion. Incidentally, the projection piece 66a of the detection plate 66, by setting so as to abut against the third lever piece 67 of the switch SW ₃ at the time of non-detection of the ice mass 21, the water tray 1該検Intellectual plate 66 by any cause like
The automatic ice maker is stopped when the ice block 21 is dropped off, thereby preventing the ice block 21 from being manufactured in a state where the ice storage completion cannot be detected. Further, the open end of the detection plate 66 is formed in a comb-teeth shape to reduce the load applied when the detection plate 66 comes into contact with the ice block 21.

(Example of Electric Control Circuit) FIG. 11 shows an electric control circuit of the automatic ice maker according to the embodiment. In the figure, a fuse F is interposed between a power supply line R and a connection point D, and a power lamp L is connected between the connection point D and the line T. Connection point D
Switch SW for discharging ice blocks between the first switch SW and the line T
₁ and the discharge motor GM, the third switch SW ₃ and the relay X ₁ of the second switch SW ₂ and the ice storage completion detection for the actuator motor AM is inserted in series s husband. Moreover, between the connection point E and the connection point K between the second switch SW ₂ and the third switch SW _3, the normally closed contact of the relay X ₁ X ₁ -
b ₁ is interposed between the connection point K and the line T,
A relay X ₂ , a fourth switch SW ₄ for supplying ice making water, a water supply valve WV, a normally open contact X ₃ -a _{1 of the} relay X ₃ , and an actuator motor AM are inserted in series.

Further, a normally closed contact X ₁ -b ₂ of the relay X ₁ connected to the fuse F in series with normally open contacts X ₃ of the relay X ₃
between the connection point N between -a ₁ and the actuator motor AM, the normally closed contact X ₃ -b for the normally closed contact X ₂ -b ₁ and the relay X ₃ of the relay X ₂ is interposed in series I have. Fan motor FM for the condenser 11 is connected to the contact "a" side of the thermostatic switch Th ₁ for deicing completion detector which is connected to the normally open contact X ₂ -a series of relay X _2, contact "b The hot gas valve HV for supplying hot gas is connected to the "" side. Further, a relay X is connected between the normally closed contact X ₁ -b _{2 of} the relay X ₁ and the line T.
Normally open contacts X ₃ -a ₂ and normally closed contact X ₂ -b ₂ of the rocking motor RM and a relay X _2, R relay SR and the compressor CM ₃ are interposed in series s husband. And relay X ₃
The fifth switch SW ₅ for ice completion detection to a connection point P between the normally open contact X ₃ -a ₂ and the rocking motor RM of being connected,
With contacts "a" protected side thermo Th ₂ and the relay X ₃ of the switch SW ₅ is connected in series, the contacts "b" side is connected to the connection point D. The fan motor FM
It has become a parallel with the relay X ₃ and.

[0039]

Next, the operation of the automatic ice maker according to the embodiment will be described with reference to a timing chart shown in FIG. (Regarding Initial Operation) When a power switch of an automatic ice maker (not shown) is turned on, the power lamp L is turned on, the compressor CM is started, and the refrigerant is supplied to the evaporating pipe 31. Relays X ₁ , X ₂ ,
The normally closed contact X ₁ -b ₂ of _{X 3, X 2 -b 1,} X 3 the actuator motor AM via -b is rotated, the water tray 16 which is held in a horizontal attitude begins to tilt diagonally downward . Motor AM
After the fourth switch S ₄ is turned off by the rotation of
The second switch S ₂ is actuated ON, closed the normally open contact X ₂ -a which relay X ₂ cooperates therewith is energized, the relay X ₃ is energized through a thermostatic switch Th ₁ . As a result, the actuator motor AM continues to rotate through the normally open contact X ₃ -a ₁ cooperating with the relay X _3, and the water tray 16 returns to the horizontal posture without stopping tilting. Incidentally relay X ₃ is self-held by the normally open contact X ₃ -a ₂ which cooperates therewith.

When the water tray 16 returns to the required position, the fourth switch S ₄ is turned ON to open the water supply valve WV, and the ice making chamber 29 in the water tray 16 is made through the ice making water supply pipe 49. Water is supplied. Note that the water tray 16 is set so as to tilt clockwise to a position where the upright wall 16d is higher than the upright wall 16e beyond the horizontal posture, and then tilt counterclockwise again to stop in the horizontal posture. The ice making water is reliably stored in the ice making chamber 29 by a preset amount. Further, the ice making water in the ice making chamber 29 supplied to a somewhat larger amount overflows the dam plate 48 as described above,
It is discharged outside through the auxiliary chamber 46, the drain pipe 47 and the drain receiving portion 19.

With the rotation of the actuator motor AM,
By the second switch SW ₂ is turned OFF operation, the motor AM is stopped to rotate, the water tray 16 is stopped in a condition that a horizontal posture. The normally closed contact of the relay X ₂ cooperates is by X ₂ -b ₂ is closed, the rocking motor RM starts rotating. Further, the second switch SW ₂
Is turned off, the water supply valve WV is closed, and the supply of ice making water is stopped. However, the fourth switch SW ₄
Hold the ON state.

(Regarding Ice Making Operation) A refrigerant is supplied from the refrigerant circulation pipe of the refrigeration system to the evaporating tube 31 by the compressor CM which is energized when the power is turned on, and is protruded from the ice making substrate 18 by the heat exchange action. The cooling of the ice making projection 17 is started. Since the ice making projections 17 are immersed in ice-making water, ice formation starts around the projections 17 and gradually grows to form an inverted dome-shaped ice block 21. During the ice making operation, the rocking motor RM keeps rotating. Therefore, the swing projection 59a of the swing member 59 rotated by the motor RM engages with the engagement piece 58 provided on the rising portion 54c, and the swing plate 54
Is lifted upward as shown in FIG. The swing projection 5
When 9a is detached from the engagement piece 58, the swinging plate 54 falls by its own weight and comes into contact with the bottom surface 16a of the ice making chamber 29.
As described above, the rocking plate 54 keeps the ice making chamber 2 during the ice making operation.
The rocking in the ice making water at 9 is repeated, thereby constantly moving the ice making water. Moreover, since the through hole 55 is formed in the rocking plate 54, the ice making water passes through the through hole 55 with the rocking of the rocking plate 54, and this causes the movement of the ice making water with the jet phenomenon. Be more active. Since the ice making water is always kept in a dynamic state as described above, the ice making protrusions 1 are formed.
The turbidity of the ice block 21 formed in 7 is prevented, and a transparent and clear ice block 21 is obtained.

(Regarding the Deicing Operation) As shown in FIG. 13, when the complete ice block 21 is formed in an inverted dome shape on the ice making projection 17, the rocking plate 54 comes into contact with the ice block 21 when it moves upward. Eventually, a downward reaction force is applied to the swing motor RM via the engagement piece 58 and the swing projection 59a. Therefore, the swing motor R
Mounting jig 38 M is disposed, the said bearing part 34 and starts to rotate in the counterclockwise direction as a fulcrum, for ice completion detection by the cam portion 59b of the swinging member 59 of the fifth switch SW ₅ The lever piece 62 is pressed to switch its contact from the “a” side to the “b” side, thereby detecting completion of ice making in the ice making unit 15. Then the self-holding of the relay X ₃ shown in FIG. 11 is being de-energized to release, the normally closed contact X ₃ -b which cooperates with this by closing, starts rotation of the actuator motor AM. Therefore, the cam plate 36 rotates counterclockwise, and the lever piece 33b of the turning support shaft 33 that engages with the connecting rod 37 eccentrically connected thereto is tilted counterclockwise, so that the water tray 16 It starts to tilt obliquely downward (see FIG. 15). Due to this tilt, the ice making water in the ice making chamber 29 overflows to the auxiliary chamber 46 through the dam plate 48 and is discharged from the auxiliary chamber 46 to the drainage receiving portion 19. Note in the process of the water tray 16 is tilted, the second fourth switch SW ₄ by the cam portion 51 of the cam plate 36 rotated by the actuator motor AM is OFF operated (see Figure 20).

[0044] The rocking motor RM here be switched on by being pressed contact "b" side by the cam portion 59b of the lever piece 62 is swinging member 59 of the fifth switch SW ₅ for ice completion detection, Its rotation continues. As a result, the swing projection 59a provided on the swing member 59 is moved to the upper horizontal portion 58a.
Spaced from, the mounting jig 38 is rotated in the clockwise direction by the elastic force action of the torsion spring 39, the contact of the fifth switch SW ₅ is switched from the "b" side to the "a" side, rocking motor RM is once Stop. However, with the rotation of the pivot 33 in the counterclockwise direction, the engaging piece 33e of the lever piece 33b is engaged.
Is moved below the upper end of the projecting piece 38a of the mounting jig 38, and the end 39b of the torsion spring 39 is engaged with the upper end of the projecting piece 38a. Does not work (see FIG. 19B). Then
Mounting jig 38 starts to rotate in the counterclockwise direction the bearing portion 34 as a fulcrum due to its own weight, switching the contacts of the fifth switch SW ₅ again "a" side in the cam portion 59b on the "b" side, The swing motor RM is rotated. And when the cam portion 59a formed with the cutout portion 59c has come to a position corresponding to the lever piece 62, are pressed in the lever piece 62 is released from the contact of the switch SW ₅ is "b" side to the "a" side By switching, the swing motor RM stops rotating (see FIG. 19C). Thus, the swing projection 59 provided on the swing member 59
“a” stops at a position separated from the tilting locus of the engagement piece 58 in the rocking plate 54, so that the tilting of the rocking plate 54 is prevented from being hindered.

When the first cam portion 50 provided on the cam plate 36 reaches the lever piece 52 of the second switch SW ₂ , the switch SW ₂ is turned on to urge the relay X ₂ , and the switch SW ₂ is turned on. together to open the normally closed contact X ₂ -b ₁ which cooperate to close the normally open contact X ₂ -a. In this case, the thermostatic switch Th ₁ for detecting the deicing completion is connected to the contact "b" side by ice blocks 21 are generated in the ice making projections 17. Accordingly, the relay X ₃ is not energized, the actuator motor AM is stopped to rotate, the water tray 16, as shown in FIG. 9, the drainage tube 47 is in contact with the upper end of the drainage receptacle 19 required Is held in a tilted posture. At this time, ice making room 2
A part of the ice making water is left inside the block 9 by the dam plate 48, but the remaining water is sufficiently cooled in the previous ice making operation. The temperature of the whole ice making water can be lowered by mixing with fresh ice making water to be replenished. Further, the ice blocks 21 formed around the ice making projections 17 due to the tilting of the water dish 16
It is exposed in a state where it adheres to. Further, in the process of stopping the tilting of the water tray 16, the upright pieces 60 of the rocking plate 54 come into contact with the ice making substrate 18.
Of the rocking plate 54 than the bottom surface 16a of the ice making chamber 29 in FIG.
Is tilted and located above. This swing plate 54
When the ice block 21 falls, it functions as a sliding chute for guiding the ice block 21 to the ice storage chamber 83.

Simultaneously with the stop of the actuator motor AM, the hot gas valve HV is opened, and hot gas is supplied to the evaporating pipe 31 instead of refrigerant as shown in the timing chart of FIG. Thereby, the ice making projections 17 are rapidly heated via the ice making substrate 18. Therefore, the connection between the ice making projection 17 and the ice block 21 is released, and the ice block 21 falls by its own weight. Then, as shown in FIG. 16, the upper plate 60 slides down the upper surface of the rocking plate 54 held in a required inclined posture, and is guided and discharged into the ice storage chamber 83 located thereunder.

The falling ice blocks 21 cause the ice making substrate 18
Is released, and the temperature of the substrate 18 rises all at once due to the flow of the hot gas in the evaporating tube 31. This temperature rise is detected by the thermo switch Th _1.
There was detected immediately by switched to the contact "a" side, the relay X ₃ is energized, normally open contacts X ₃ -a ₁ which cooperates with this
Is closed, the rotation of the actuator motor AM is restarted. Further, the hot gas valve HV is closed, and the supply of the refrigerant to the evaporating pipe 31 is restarted.

The cam plate 36,
Under the action of the connecting rod 37 and the lever piece 33b, the turning support shaft 33 rotates clockwise, and the water tray 24 similarly rotates clockwise to start returning to the horizontal posture. When the rotation of the motor AM is resumed, the second cam portion 51 of the cam plate 36 is moved to the position shown in FIG.
As shown in, arrives to the lever piece 53 of the fourth switch SW _4, turning ON operation of the switch. Thereby, the water supply valve W
V is released, and ice making water is supplied to the ice making room 29.

Then, the first cam portion 50 of the cam plate 36 is
When released from the second lever member 52 of the switch SW _2, the switch SW ₂ is turned OFF operation, together with close the water supply valve WV to stop supplying the ice-making water, the actuator motor AM is stopped. This relay X ₃ is self-holding,
Is because by opening the normally closed contact X ₃ -b for the relay X _3. Thus, the water tray 16 is stopped in the horizontal posture.

In the embodiment, when the water tray 16 is returned to the horizontal position, as shown in FIG. 18, the water tray 16 is once tilted clockwise to a position where the inclined open end (the upright wall 16d side) is higher than the horizontal position. After that, it is set to tilt counterclockwise and stop in a horizontal posture. That is, if the ice making water is supplied to the ice making chamber 29 by an amount that overflows from the dam plate 48 in a state where the dam plate 48 provided on the water tray 16 is positioned at a high level, the water tray 16 becomes horizontal. When returning to the attitude, the required amount of ice making water is reliably supplied to the ice making chamber 29. Thereby, it is possible to prevent the occurrence of a problem due to the shortage of the ice making water.

With the rotation of the pivot 33 in the clockwise direction, the upper end of the engaging piece 33e of the lever piece 33b moves above the upper end of the projecting piece 38a of the mounting jig 38, and the torsion spring The end 39b of the engagement member 3
It is engaged with the upper end of 3e (see FIG. 19A). As a result, the mounting jig 38 rotates clockwise around the pivot 33 as a fulcrum under the elasticity of the torsion spring 39, and the swing member 5
9 is brought to an operating position where the swing projection 59a can be engaged with the engagement piece 58 of the swing plate 54. Therefore, the second switch S
When W ₂ is relay X ₂ and OFF operation is deenergized, by rotating the rocking motor RM and the normally closed contact X ₂ -b ₂ is closed for cooperation with this, the swing in the ice-making operation The vertical swing of the plate 44 is restarted.

When the ice making operation is completed and the water tray 16 is tilted in a state in which the ice making operation and the deicing operation are repeated and a predetermined amount of ice blocks 21 are stored in the ice storage chamber 83, the detection is performed in the tilting process. plate 66 abuts against tilting is prevented in ice mass groups, it will be rotated relative to the water tray 16 to continue tilting, leading to turning oN operation of the third switch SW ₃ for ice storage completion detection. At this time, since the second switch SW ₂ of FIG. 11 is operating ON, by the relay X ₁ is energized, normally closed contact X ₁ -b ₁ for cooperation with this, X ₁ -b ₂
Is released, the rotation of the actuator motor AM is stopped, and the power supply to the compressor CM is also stopped.

In the illustrated embodiment, a configuration is employed in which a large number of inversely tapered ice-making projections 17 are suspended at predetermined intervals with respect to the ice-making substrate 18. However, as the ice-making projection, various kinds of members such as a round bar-shaped member and a pin-shaped member can be suitably used as long as it is a core member to be cooled that functions as a so-called ice-making part.

[0054]

As described above, according to the water tray tilting mechanism of the ice making machine according to the present invention, since the water tray does not have a large outwardly protruding portion, the size of the machine can be reduced. Also, the shaft support formed on the water dish is pivotably supported on the ice making machine body,
Since the shaft supporting portion is configured to rotate, the water tray is smoothly tilted and returned to the tilted state around the shaft supporting portion. That is, since the load of the water tray is uniformly applied to the shaft support, a biased force is not applied to the turning support shaft or the connecting rod connected to the shaft support, and a smooth rotation can be performed. It is. In addition, since the pivot for tilting the water tray is rotatably supported by the ice making machine main body, there is also an advantage that the heat insulation treatment in this portion becomes easy.

Further, by using the drain pipe provided on the water tray as a stopper for holding the water tray in an inclined posture,
It is not necessary to separately provide a stopper, and the cost can be reduced by reducing the number of parts.

[Brief description of the drawings]

FIG. 1 is a schematic perspective view showing an ice making unit employing a water tray tilting mechanism according to an embodiment in a partially disassembled state.

FIG. 2 is a schematic vertical sectional view of an ice making machine employing a water tray tilting mechanism according to the embodiment.

FIG. 3 is an exploded perspective view of a main part of the water tray tilting mechanism according to the embodiment.

FIG. 4 is a sectional view of a main part of the ice making unit shown in FIG. 1;

FIG. 5 is a front view of an essential part showing a partially cut-out state of a tilting mechanism of a water tray and a swinging mechanism of a swinging plate.

FIG. 6 is a schematic perspective view showing a state where the ice making unit is provided in a housing.

FIG. 7 is a partially cutaway front view of the ice making unit.

FIG. 8 is an external perspective view of the ice making machine.

FIG. 9 is a partially cutaway side view showing a state in which a water tray is tilted in the ice making unit.

FIG. 10 is a schematic diagram of a refrigeration system employed in an ice making machine.

FIG. 11 is a control circuit diagram of the ice making machine.

FIG. 12 is an explanatory diagram showing the ice making unit and a corresponding swing mechanism in a state where the swing plate is swinging during the ice making operation.

FIG. 13 is an explanatory view showing an ice making unit in a state where ice making is completed and a corresponding swing mechanism.

FIG. 14 is an explanatory view showing a swing mechanism corresponding to a state in which the swing projection of the swing member is retracted from the tilt trajectory of the engagement piece in the ice making unit and the swing plate in a state where ice making is completed.

FIG. 15 is an explanatory view showing an ice making unit in a state where ice making is completed, and a corresponding swing mechanism and tilt mechanism.

FIG. 16 is an explanatory diagram showing the ice making unit in a state where the tilting of the water tray is stopped, and the positional relationship between the cam plate of the corresponding tilting mechanism and the second and fourth switches.

FIG. 17 is an explanatory diagram showing together the ice making unit in a state where the water tray has started returning, the positional relationship between the cam plate of the corresponding tilting mechanism and the second and fourth switches.

FIG. 18 is an explanatory view showing the ice making unit in a state where the water tray is tilted beyond the horizontal posture, and the positional relationship between the cam plate of the corresponding tilting mechanism and the second and fourth switches.

FIG. 19 is an operation explanatory view showing a process in which the swinging mechanism of the swinging plate detects the completion of ice making and retracts the swinging projection of the swinging member from the tilt trajectory of the engagement piece in the swinging plate.

FIG. 20 is a timing chart of control in the ice making machine.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11 ... Condenser, 16 ... Water tray, 17 ... Ice making projection, 18 ... Ice making board 19 ... Drainage receiving part, 21 ... Ice block, 29 ... Ice making room, 30 ... Shaft support part 31 ... Evaporation tube, 33 ... Revolving spindle, 33b: lever piece 33c: engaging projection, 36: cam plate, 37: connecting rod, 47:
Drain pipe CM… Compressor, AM… Actuator motor

Claims (2)

(57) [Scope of request for utility model registration] An evaporating tube (31) connected to a refrigeration system having a compressor (CM), a condenser (11) and the like, and the evaporating tube (31) is disposed on an upper surface and a number of An ice making board (18) having an ice making part (17) protruding and hanging at predetermined intervals, and an ice making chamber (29) defined inside the ice making chamber which is always pivotally supported by the ice making machine main body so as to be tilted freely and always maintain a horizontal posture. A water dish (16) in which the ice making part (17) is immersed in the ice making water, and when the ice making water freezes around the ice making part (17) to form a required ice block (21), An ice making machine configured to tilt the water tray (16) obliquely downward to release the ice block (21), and then to raise and return the water tray (16) to the horizontal position again, wherein the water tray (16) A shaft supporting portion formed along one side intersecting the tilting direction and rotatably supported by the ice making machine main body;
(30), pivotally supported by the ice making machine main body, one end of which is rotatably fitted to the shaft end of the shaft support portion (30), and the other end is radially A pivot shaft (33) having a lever piece (33b) extending therethrough; and a plate (3) disposed on the ice making machine main body and formed in a substantially circular shape.
An actuator motor (AM) for rotating 6) and an engagement protrusion (33c) protruding from the lever piece (33b) are rotatably fitted at one end to the other end of the plate (36). A connecting rod (37) rotatably supported at an eccentric position, and by rotating the plate (36) by the actuator motor (AM), a turning support shaft is provided via the connecting rod (37). (33) by rotating the water tray (16) in the forward and reverse directions to tilt the water tray (16) obliquely downward around the shaft support portion (30), and to raise and return to the horizontal posture. Machine water tray tilting mechanism. 2. A drainage pipe (47) is projected from the water tray (16), and a drainage receiving part (19) is formed in the ice making machine main body facing down a tilting locus of the drainage pipe (47). When the water tray (16) is tilted obliquely downward, the drain pipe (47) abuts on the upper edge of the drain receiving portion (19) to hold the water tray (16) in an inclined posture. 2. The water tray tilting mechanism of an ice making machine according to claim 1, wherein: