Ice making machine

1. An ice making machine which is to be disposed in an ice making chamber provided with a cold air supply port to which cold air is supplied, the cold air being used to freeze water supplied to an ice tray to make ice, the ice making machine comprising:

the ice tray comprising a plurality of the ice making recessed parts which are arranged in a longitudinal direction of the ice tray;

a drive unit which is provided on a first end side in the longitudinal direction of the ice tray and is structured to turn the ice tray;

a frame body which supports the ice tray and the drive unit, the frame body comprising a wall part which is provided in the frame body on a second end side in the longitudinal direction of the ice tray so as to face the drive unit on an opposite side to the first end side;

and

a cold air duct structured to connect an opening formed in the frame body with the cold air supply port;

wherein

the wall part comprises:

the opening through which the cold air is sent to the ice tray through the cold air duct;

a cold air guide part which is structured to guide the cold air to the ice tray through the opening,

a rib which is integrally formed with the cold air guide part so as to divide the opening; and

a holding hole which turnably holds a turning shaft protruded from the ice tray; wherein the rib comprises;

a vertical rib which is integrally formed with the cold air guide part and divides the opening in a width direction of the ice tray;

a ring-shaped rib surrounding the holding hole, and

a radial rib which is radially extended from the ring-shaped rib and is integrally formed with the vertical rib and the ring-shaped rib; and

wherein the cold air is sent from the cold air duct to the ice tray through the opening formed of the cold air guide part and the vertical rib which are formed in the wall part of the frame body.

2. The ice making machine according to claim 1 , wherein the cold air guide part is an inclined wall which is inclined with respect to a direction in which the plurality of the ice making recessed parts provided in the ice tray is opened.

3. The ice making machine according to claim 2 , wherein the inclined wall is a frame body side inclined wall which is connected with an edge of the opening on a side of the ice tray.

4. The ice making machine according to claim 3 , wherein the cold air duct comprises a duct side inclined wall which faces the frame body side inclined wall.

5. The ice making machine according to claim 4 , wherein

a tip end of the duct side inclined wall is directed to a direction of one of the plurality of the ice making recessed parts which is located at a closest position to the wall part on the second end side in the longitudinal direction of the ice tray, or to a direction between the one of the plurality of the ice making recessed parts which is located at the closest position to the wall part on the second end side in the longitudinal direction of the ice tray and the wall part.

6. The ice making machine according to claim 2 , wherein

the cold air guide part and the cold air duct structure a cold air blowing outlet for flowing the cold air toward the ice tray, and

the cold air blowing outlet is located with respect to the ice tray on a side where the plurality of the ice making recessed parts is opened.

7. The ice making machine according to claim 6 , wherein a dimension of the cold air blowing outlet in a direction perpendicular to the longitudinal direction of the ice tray and a depth direction of each of the plurality of the ice making recessed parts is smaller than that of the frame body.

8. The ice making machine according to claim 1 , wherein

the cold air guide part formed in the wall part is a frame body side inclined wall which is inclined with respect to a direction where the plurality of the ice making recessed parts provided in the ice tray is opened, and

the cold air duct comprises a duct side inclined wall which is inclined with respect to the direction where the plurality of the ice making recessed parts is opened so as to face the frame body side inclined wall.

9. The ice making machine according to claim 1 , wherein

the frame body side inclined wall is an upper inclined wall which structures an upper side inclined wall for a cold air blowing outlet through which the cold air is flowed toward the ice tray,

the duct side inclined wall is a lower inclined wall which structures a lower side inclined wall for the cold air blowing outlet,

the vertical rib comprises a plurality of the vertical ribs which divide the opening in the width direction of the ice tray, and

the cold air blowing outlet is divided in a plurality of divided openings by the upper inclined wall, the lower inclined wall and the plurality of the vertical ribs.

10. The ice making machine according to claim 9 , wherein

one of the plurality of the vertical ribs is formed in a flat plate shape extending in an upper and lower direction so as to be integrally formed and connected with the upper inclined wall,

the lower inclined wall is formed with a groove and a cut-out part to which the plurality of the vertical ribs is fitted, and

the plurality of the vertical ribs is fitted to the groove and the cut-out part of the lower inclined wall so that the cold air blowing outlet is divided and thereby the plurality of the divided openings is structured.

11. The ice making machine according to claim 10 , wherein

the plurality of the vertical ribs and the radial rib are disposed in the cut-out part of the lower inclined wall.

12. The ice making machine according to claim 1 , wherein

the frame body comprises an opening side end face which is abutted with a duct side end face of the cold air duct and a frame body side fixing part which is disposed on an outer peripheral side of the opening side end face, and

the cold air duct comprises a duct side fixing part which is fixed to the frame body side fixing part.

13. The ice making machine according to claim 12 , wherein

a step part is formed in one of the duct side end face and the opening side end face, and

an inversion shape which a surface of the step part is fitted is formed in an other of the duct side end face and the opening side end face.

14. The ice making machine according to claim 12 , wherein the cold air duct comprises an overlapping part which is disposed on an inner peripheral side or an outer peripheral side of the wall part surrounding the opening and is overlapped with the wall part.

15. The ice making machine according to claim 12 , wherein the frame body side fixing part is located on an upper side in a vertical direction with respect to a center of the opening.

16. The ice making machine according to claim 12 , wherein

one of the cold air duct and the wall part comprises an engaging arm part which is protruded toward an other of the cold air duct and the wall part, and

the other of the cold air duct and the wall part comprises an engaged part which is capable of engaging with an engaging pawl provided at a tip end of the engaging arm part.

17. The ice making machine according to claim 16 , wherein the frame body side fixing part is provided on an opposite side to an engaged position of the engaged part with the engaging pawl with respect to the opening.

18. The ice making machine according to claim 16 , wherein

the engaging arm part is provided in the cold air duct, and

the engaged part is provided at a position different from the opening.

19. The ice making machine according to claim 12 , wherein

the cold air duct comprises a connecting flow passage part having a lower side wall, an upper side wall and side walls which connect both ends in a width direction of the lower side wall and the upper side wall with each other, and

the duct side end face is provided at a tip end of the upper side wall and the duct side fixing part is provided in a tip end portion of the upper side wall.

20. The ice making machine according to claim 19 , wherein

the cold air guide part formed in the frame body is an upper inclined wall structuring an upper side inclined wall for a cold air blowing outlet structured to flow cold air toward the ice tray, the upper inclined wall being inclined with respect to a direction where an ice making recessed part provided in the ice tray is opened,

the cold air duct comprises a duct side inclined wall which is a lower inclined wall facing the upper inclined wall, the lower inclined wall being inclined with respect to the direction where the ice making recessed part is opened, and

when the duct side fixing part is fixed to the frame body side fixing part and thereby the cold air duct is fixed to the frame body, the duct side end face is connected with the upper inclined wall and the cold air blowing outlet is structured by the upper inclined wall and the duct side inclined wall.

21. The ice making machine according to claim 1 , wherein

the drive unit is structured to turn the ice tray by a predetermined angle from an ice making position,

the frame body comprises an abutting part which is abutted with a projection provided in the ice tray to apply a force in a twisting direction to the ice tray in a state that the ice tray has been turned by the predetermined angle, and

each of the frame body and the cold air duct is formed with a relief part which avoids an interference with the ice tray in the state that the ice tray has been turned by the predetermined angle.