JP2005221221A - Drain structure for ice maker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a reverse flow from a drain opening by smoothly discharging waste water. <P>SOLUTION: The drain structure for the ice maker comprises a drain port 42 provided on a drain pan 40 receiving residual ice making water discharged from an ice making mechanism, and the drain opening 52 positioned below the ice making mechanism and provided on a bottom of an ice storage part 18 storing chunks of ice delivered from the ice making mechanism. Waste water from the drain pan 40 flows into the drain opening 52 via a drain pipe 46, and it is discharged to the outside from a drain pipe 56 connected to the drain opening 52. An air vent pipe 60 with both ends opened is arranged in the drain port 42. In the air vent pipe 60, a lower end is inserted in the drain port 42, a lower part opening 60a is positioned in an interior of the drain pipe 46, and an upper part opening 60b is positioned higher than a highest water level HWL of waste water accumulated in the drain pan 40, and it is composed such that it can release air in a drain passage to the outside during draining of the waste water. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  In the present invention, an upper drainage port for discharging drainage from the ice making mechanism and a lower drainage port provided at the bottom of the ice storage unit for discharging melted water and the like are connected by a drain pipe so that the drainage and melting from the icemaking mechanism can be performed. The present invention relates to a drainage structure of an ice making machine configured to discharge ice water or the like through a drain pipe connected to a drain outlet.

  As an apparatus for continuously producing an ice block of a required shape, ice making machines having various configurations have been proposed. For example, a large number of ice making chambers opened downward can be opened and closed by a water tray from below, and ice making water is sprayed and supplied to the ice making chamber through the water tray, so that ice blocks are gradually formed in the ice making chamber. So-called closed cell type ice making machines are widely used. In addition, ice-making water is directly supplied to many ice-making chambers that open downward without going through a water tray, and so-called open cell type ice-making machines that form ice blocks in the ice-making chamber, or ice making devices that are inclined or standing upright. There is also known a flow-down type ice making machine that supplies ice-making water down to the front or back surface of the plate and forms plate ice on the ice-making plate surface.

  FIG. 7 is a schematic perspective view showing the closed cell type ice making machine 10 from the front with the upper and front panels removed, and the main body 11 of the ice making machine 10 has a substantially box shape, and its outer surface is An ice storage section 18 defined by a resin inner box 14 formed in a box shape whose front surface is opened is provided above the outer box 12 while being constituted by a metal outer box 12. A space between the outer box 12 and the inner box 14 is filled with a heat insulating material 16 such as urethane foam, and is subjected to a heat insulating process. In addition, an opening 18 a serving as an outlet for ice blocks stored in the ice storage unit 18 is opened on the front surface of the ice storage unit 18, and the opening 18 a can be opened and closed by a heat insulating door 19 provided in the main body 11. It is configured so that it can be closed.

  An ice making mechanism 20 for making ice blocks of a predetermined shape is disposed in the upper part of the main body 11, and the ice blocks produced by the ice making mechanism 20 are discharged and stored in the ice storage unit 18 located below. The ice making mechanism 20 is integrated with an ice making chamber 24 that defines a number of ice making chambers that open downward, a water tray 26 that is tiltable below the ice making chamber 24, and a lower side of the water tray 26. And an ice making water tank 28 for storing a required amount of ice making water. An evaporator 30 led out from a refrigeration mechanism (not shown) is closely and meanderingly arranged on the upper surface of the ice making chamber 24 so that the ice making chamber can be forcibly cooled by circulating a refrigerant during the ice making operation.

  The water tray 26 is positioned horizontally during the ice making operation, closes the ice making chamber from below, and is biased by the water tray tilting mechanism 32 during the deicing operation, and tilts obliquely downward to open the ice making chamber. Further, in the deicing operation, ice blocks falling from the ice making chamber slide down on the inclined surface of the water tray 26 and are discharged to the ice storage unit 18, and ice making water remaining in the ice making water tank 28 (ice making residue). Water) is discharged to a drain pan 40 disposed below the ice making mechanism 20. The drain pan 40 is configured such that an excessive portion (surplus water) of the ice making water supplied to the ice making water tank 28 also flows through an overflow means (not shown) provided in the ice making water tank 28. Has been.

  As shown in FIG. 8, a drain port 42 serving as an outlet for ice making residual water (drainage) is provided on the bottom surface of the drain pan 40, and an upper end of a drain pipe 46 is connected to the drain port 42. . Further, the lower end of the drain pipe 46 is inserted into a drain outlet 52 of a drain tray 50 provided at the bottom of the ice storage section 18. The drain port 52 of the drain tray 50 is set larger than the outer diameter of the drain pipe 46, and is generated in the ice storage unit 18 from a gap between the inner peripheral surface of the drain port 52 and the outer peripheral surface of the drain pipe 46. Ice melt water, washing water, and the like (melted water etc.) of ice blocks are discharged to the outside through a drain pipe 56 connected to the drain port 52. That is, the drainage received by the drain pan 40 flows from the drain port 42 to the drain port 52 via the drain pipe 46 and is discharged to the outside from the drain pipe 56. The melted ice water etc. of the tray 50 are discharged | emitted using the same drain pipe 56 (for example, refer patent document 1).

The drain pipe 56 protrudes from the bottom surface of the main body 11 and is connected to a nipple 54 communicating with the drain port 52 by an elbow 56a, and is configured to guide the drainage received in the drainage tray 50 to a final discharge destination. Has been. On the downstream side of the elbow 56a, a trap portion 56b having a U-shaped curved pipe is formed. By filling the trap portion 56b with water, the outside and the inside of the main body 11 are isolated, Odors and insects are prevented from entering the main body 11 from the outside through the drain pipe 56. The outer peripheral surface of the trap portion 56b is covered with a heat insulating hose 58, and the water storage portion in the trap portion 56b is kept warm, thereby preventing the occurrence of condensation and preventing dripping water from dripping onto the floor surface. It is out.
JP 2001-289541 A

  By the way, when the drainage flows from the drain port 42 into the drain pipe 46, a spiral water flow is generated in the vicinity of the entrance in the drain pipe 46 (see FIG. 8). This spiral portion prevents air from coming out of the drain port 42 and increases drainage resistance. Further, by providing the trap portion 56b in the drain pipe 56, drainage resistance is further increased. In particular, in the ice making machine 10 in which there is no space in the height direction between the bottom surface of the main body 11 and the floor surface, the horizontal pulling distance of the drain pipe 56 tends to be long, and the drainage resistance increases. Is pointed out. Therefore, when these adverse conditions are overlapped and ice making residual water flows into the drain pan 40 in a large amount at the time of the deicing operation, it is difficult for air to escape from the drain port 42, so A backflow phenomenon that blows out with the drainage from the drainage port 52 may be caused. The drainage overflowing into the ice storage unit 18 due to the reverse flow phenomenon contaminates the ice block and causes serious hygiene problems, and also causes melting and arching (sticking of ice blocks), thereby reducing the value of the ice block. .

  That is, the present invention has been proposed to solve these problems inherently in the drainage structure of the ice making machine according to the prior art, and has been proposed to solve these problems suitably. The purpose is to provide a drainage structure for an ice making machine that can prevent backflow from the mouth.

In order to overcome the above problems and achieve the intended purpose, the drainage structure of the ice making machine according to the present invention is:
An ice making mechanism disposed in the upper part of the main body, an upper drainage port for discharging drainage from the icemaking mechanism, a lower drainage port provided at the bottom of an ice storage unit located below the icemaking mechanism, and the upper drainage An ice making machine comprising a drain pipe connecting the mouth and the lower drainage port, and discharging the drainage from the ice making mechanism and the melted water from the ice storage part to the outside through the drainage pipe connected to the lower drainage port In the drainage structure of
Inserting air vent pipes opened at both ends into the drain pipe through the upper drainage port, and positioning the lower opening of the air vent pipe inside the drain pipe,
The upper opening of the air vent pipe is positioned so as not to be immersed in the drainage.

In order to overcome the above-mentioned problems and achieve the intended purpose, a drainage structure for an ice making machine according to another invention of the present application is:
An ice making mechanism disposed in the upper part of the main body, an upper drainage port provided in a drain pan that receives drainage from the ice making mechanism, a lower drainage port provided at the bottom of the ice storage unit located below the ice making mechanism, It consists of a drain pipe that connects the upper drainage port and the lower drainage port, and discharges the drainage from the ice making mechanism and the melted water from the ice storage part to the outside through the drainage pipe connected to the lower drainage port. In the ice machine drainage structure
Inserting air vent pipes opened at both ends into the drain pipe through the upper drainage port, and positioning the lower opening of the air vent pipe inside the drain pipe,
The upper opening of the air vent pipe is configured to be positioned above the maximum water level of the drain pan.

  According to the drainage structure of the ice making machine according to claim 1, the air in the drainage passage can be easily released when the drainage from the upper drainage port is discharged by disposing the air vent pipe open at both ends at the upper drainage port. The drainage resistance can be reduced and the flow can be made smooth.

  According to the drainage structure of the ice making machine according to claim 2, by arranging an air vent pipe at the upper drainage port of the drain pan, it is easy to let out air in the drainage passage when draining from the drain pan, and drainage resistance is reduced. Since the flow is reduced and smooth, the backflow of drainage from the drainage port can be prevented. Therefore, contamination or melting of the ice blocks stored in the ice storage unit can be prevented. Further, by configuring the air vent pipe to be removable, it does not interfere with the drain pan cleaning and inspection work, and the workability is not deteriorated.

  According to the drainage structure of the ice making machine according to the third aspect, the air vent pipe can be reliably positioned in the vertical direction by the stopper portion. Further, according to the drainage structure of the ice making machine according to claim 4, it is possible to achieve reliable air venting by positioning the lower opening of the air vent pipe below the vortex portion generated in the drain pipe.

  According to the ice machine drainage structure of the fifth aspect, the upper end portion of the drain pipe is composed of the first path portion having a small inner diameter dimension and the second path section having a large inner diameter dimension. It can be generated only inside the first path part. That is, if the insertion length of the air vent pipe into the drain pipe is set so that the lower opening is positioned inside the second path portion, the lower opening faces below the vortex portion, and the air vent pipe The insertion length does not depend on the vortex generation position.

  Next, the drainage structure of the ice making machine according to the present invention will be described below with reference to the accompanying drawings by giving a preferred embodiment. For convenience of explanation, the same components as those of the ice making machine shown in FIG. 7 or FIG. Here, about the structure of a drain tray and the drain pipe connected to this drain tray, the same thing as what was demonstrated in the prior art is employ | adopted.

[First embodiment]
As shown in FIG. 1, in the main body 11 of the ice making machine according to the first embodiment, the ice making mechanism 20 is disposed below the ice making mechanism 20, and drainage of residual ice making water and excess water discharged from the ice making mechanism 20. A drain port (upper drainage port) 42 provided in the drain pan 40 for receiving the ice, and a drainage port for discharging ice melt water, washing water, etc. (melted water etc.) of ice blocks in the ice storage unit 18 provided below the ice making mechanism 20 (Lower drainage port) 52, a drain pipe 46 that guides the drainage in the drain pan 40 to the drainage port 52, and a drainage pipe 56 that is disposed outside the main body 11 and communicates with the drainage port 52 to guide the drainage to the final discharge destination. And.

  As shown in FIG. 2 (a), the drain pan 40 is formed in a dish shape, and the ice making residual water discharged from the ice making water tank 28 tilted during the deicing operation and the water supply water discharged from the ice making water tank 28 are supplied. It is disposed at a position where it can receive surplus water, and is set to a capacity necessary for receiving drainage. A drain port (upper drainage port) 42 serving as a drainage outlet is provided at the bottom of the drain pan 40, and a wall surface defining the drain port 42 projects downward from the outer bottom surface of the drain pan 40. An upper end of the drain pipe 46 is inserted into the drain port 42, and both 42 and 46 are connected in communication with a connection hose 48. The lower end of the drain pipe 46 is inserted into a drain port 52 of a drain tray 50 provided at the bottom of the ice storage unit 18. That is, the drainage received in the drain pan 40 flows into the drain outlet 52 through the drain pipe 46 and is discharged to the outside through the drain pipe 56.

  The inner bottom surface of the drain pan 40 is inclined downward toward the drain port 42, and the received drainage is suitably guided to the drain port 42. Further, the drain port 42 is prevented from entering the drain pipe 46 on the inner bottom surface side (the surface opened inside the drain pan 40) to prevent the drain pipe 46 from being blocked. A cover member 44 is provided. The cover member 44 is formed in a semicircular shape so as to cover the drain port 42, and a plurality of openings 44 a are provided on the side surface portion thereof, and the drainage received in the drain pan 40 from the openings 44 a. It is configured to flow into the drain port 42. In addition, a hole 44b that allows insertion of an air vent pipe 60, which will be described later, is formed at the top of the cover member 44.

  As shown in FIG. 1 or FIG. 2B, the air vent pipe 60 is a hollow cylindrical body having both ends open, and the axis of the air vent pipe 60 is vertically moved in the hole 44b of the cover member 44. It is inserted in a state extending in the direction. The lower end of the air vent pipe 60 is inserted from the drain port 42, the lower opening 60 a is located inside the drain pipe 46, and the upper end of the air vent pipe 60 is opened from the highest water level HWL of the drainage that is received and accumulated in the drain pan 40. 60b is located above. Here, in the air vent pipe 60 of the first embodiment, the upper opening 60b is located above the upper end of the wall of the drain pan 40 in order to prevent the air vent pipe 60 from being submerged. The insertion length of the air vent pipe 60 into the drain pipe 46 is such that the lower opening 60a is downward from a position where the drainage flowing into the drain pipe 46 from the drain port 42 may be spiral (vortex part). It is set to face. The outer diameter of the air vent pipe 60 is set to be smaller than the hole diameter of the drain port 42, and the inner peripheral surface of the drain port 42 and the outer peripheral surface of the air vent pipe 60 are spaced apart by a required distance. Yes. That is, drainage flows through the gap between the inner peripheral surface of the drain port 42 and the outer peripheral surface of the air vent pipe 60. The air vent pipe 60 has a plurality of protruding stopper portions 62 formed in a substantially intermediate portion in the axial direction on the outer peripheral surface thereof. The stopper 62 is locked to the outer edge of the hole 44b of the cover member 44, whereby the insertion of the air vent pipe 60 into the drain port 42 is restricted, and the air vent pipe 60 is positioned in the vertical direction. At the same time, the air vent pipe 60 can be removed by pulling it upward when not needed.

[Operation of the first embodiment]
Next, the operation of the drainage structure of the ice making machine according to the first embodiment will be described. First, in order to attach the air vent pipe 60 to the drain port 42, the lower end of the air vent pipe 60 is inserted into the hole 44 b of the cover member 44 from above, and the stopper 62 is brought into contact with the cover member 44. Let As a result, the air vent pipe 60 is positioned so that the lower opening 60a is located inside the drain pipe 46, the upper end faces a predetermined height above the drain port 42, and the upper opening 60b opens into the air. Is done. Then, the lower end of the air vent pipe 60 is inserted into the drain pipe 46 over a predetermined length, so that the drainage is guided to the air vent pipe 60 when the drainage received in the drain pan 40 is discharged. It smoothly flows between the outer peripheral surface of the air vent pipe 60 and the inner peripheral surface of the drain pipe 46, and it is prevented that a spiral portion is formed in the drain pipe 46 and is blocked as in the conventional example. It is possible to let the air existing in the drainage path such as the drainage pipe 56 etc. escape to the outside through the air vent pipe 60 (see FIG. 1). That is, it is possible to eliminate the increase in drainage resistance caused by the poor air escape and smoothly drain the drainage. Even when the trap portion 56b is formed or the lateral pulling distance of the drain pipe 56 is increased, the air in the drain passage escapes to the outside through the air vent pipe 60, and the drain resistance is reduced. Therefore, high pressure is not applied to the drainage port 52 of the drainage tray 50 so that air does not escape, and the backflow of drainage due to the escape of air from the drainage port 52 can be prevented. Therefore, there is no possibility of contamination of ice blocks stored in the ice storage unit 18 due to the backflow of drainage, melting of ice blocks, or the like.

  The air vent pipe 60 is only positioned in the vertical direction by the stopper 62 being locked to the outer edge of the hole 44b opened at the top of the cover member 44, and therefore can be pulled out and removed. is there. That is, by removing the air vent pipe 60 when cleaning or inspecting the drain pan 40, a cleaning operation or an inspection work can be performed without being obstructed by the air vent pipe 60. Further, by removing the air vent pipe 60, the air vent pipe 60 itself can be easily cleaned, so that the sanitary condition can be suitably maintained. The air vent pipe 60 may be fixed to the cover member 44.

[Example of change]
In the first embodiment, the closed cell type ice making mechanism in which the water tray 26 and the ice making water tank 28 are tilted during the deicing operation and the ice making residual water is discharged to the drain pan 40 has been described, but other drain pans are not provided. Even with an ice making mechanism of the type, a configuration in which an air vent pipe is provided can be adopted. For example, in the open cell type ice making mechanism 70 shown in FIG. 3, an overflow pipe (drain pipe) 74 that discharges a surplus portion (surplus water) of the ice making water supplied to the ice making water tank 72 is arranged in the ice making water tank 72. It is installed. The overflow pipe 74 is connected to the drain outlet (lower drain outlet) 52 of the drain tray 50 in the same manner as the drain pipe 46 of the first embodiment, and excess water is discharged from the drain outlet 52 through the drain pipe 56 to the outside. It has come to be. The configurations of the drain pan 50 and the drain pipe 56 are the same as those described above. An inlet (upper drainage port) 74 a of the overflow pipe 74 is opened at a position raised from the inner bottom surface of the ice making water tank 72. An air vent pipe 76 is detachably disposed at the inlet 74a of the overflow pipe 74. The air vent pipe 76 has a lower opening 76a located in the overflow pipe 74 and an upper opening 76b at the inlet 74a. It is located above a predetermined height so as not to be immersed in the ice making water (drainage) in the ice making water tank 72 (see FIG. 3B). If the upper opening 76b is positioned above the upper end of the wall of the ice making water tank 72, the air vent pipe 76 can be reliably prevented from being submerged. In addition, a plurality of protruding stoppers 78 are formed in a substantially central portion in the axial direction of the air vent pipe 76 so as to be spaced apart from each other in the circumferential direction. A guide portion 80 that contacts the peripheral surface is formed. That is, when the stopper portion 78 is locked to the outer edge of the inflow port 74a, the air vent tube 76 is positioned vertically, and the guide portion 80 abuts against the inner peripheral surface of the overflow tube 74. The air vent pipe 76 is prevented from shaking in the horizontal direction. The ice making water flows into the overflow pipe 74 through the gaps in the stoppers 78 and the guides 80 that are separated in the circumferential direction. Then, by arranging the air vent pipe 76 in the overflow pipe 74 in this way, air can escape through the air vent pipe 76 and the excess water can be discharged smoothly.

[Second Embodiment]
FIG. 4 is an enlarged cross-sectional view showing the main part of the drainage structure of the ice making machine according to the second embodiment. In addition, the same code | symbol is attached | subjected about the same member demonstrated by the prior art and 1st Example, and detailed description is abbreviate | omitted below.

  The inside of the main body 11 in the ice making machine according to the second embodiment has the same configuration as that of the first embodiment, and is provided with a drain port (upper side) provided in a drain pan 40 that receives drainage discharged from the ice making mechanism 20. A drain port) 42, a drain port (lower drain port) 52 that discharges ice melt water and washing water (melted ice water, etc.) of ice blocks in the ice storage unit 18, and a drain pipe that guides drainage in the drain pan 40 to the drain port 52. 86 and a drain pipe 56 that is disposed outside the main body 11 and communicates with the drain port 52 to guide the drainage to the final discharge destination.

  An upper end portion 82 of the drain pipe 86 that guides the drainage in the drain pan 40 to the drain port 52 is connected to the drain port 42 and has a first path portion 82a having an inner diameter equal to the drain port 42; The second path portion 82b is connected to the lower end of the first path portion 82a and has a larger inner diameter than the drain port 42. That is, in the drain pipe 86 according to the second embodiment, as shown in FIG. 4, the upper end portion 82 connected to the drain port 42 is composed of the first path portion 82a and the second path portion 82b. The inner diameter dimensions of the connecting portions 82a and 82b are set to be different. In the second embodiment, the entire member that is disposed between the drain port 42 and the drain port 52 and communicates with each other is referred to as a drain pipe 86, as shown in FIG. A cylindrical connecting portion that protrudes downward from the outer bottom surface of the drain pan 40 and communicates with the drain port 42 is also included.

The first path portion 82a which constitutes an upper portion of the upper portion 82 is formed from a tubular connecting portion from the outer bottom surface protruding by a required length below the drain pan 40, the inner diameter r _1, the It is set equal to the drain port 42. In addition, the second path portion 82b connected to the lower end 84 of the first path portion 82a and constituting the lower portion of the upper end portion 82 has an inner diameter dimension r ₂ , that is, an inner diameter dimension of the drain port 42, that is, It is set larger than the inner diameter r ₁ of the one path portion 82a. In addition, a stepped portion 88 is formed in the connecting portion between the first path portion 82a and the second path portion 82b. Accordingly, the internal space of the upper end portion 82 of the drain pipe 86 includes a first space S ₁ defined internally by the first path portion 82a and a second space S defined internally by the second path portion 82b. ₂ , drainage resistance during drainage is reduced in the second space S ₂ , and as shown in FIG. 4, the spiral portion is generated only within the first space S ₁ . The connecting portion between the first path portion 82 a and the second path portion 82 b is connected by a connection hose 48.

The lower opening 60a of the air vent pipe 60 inserted through the hole 44b of the cover member 44 is positioned below the lower end 84 of the first path portion 82a. That is, as shown in FIG. 4, when the air vent pipe 60 is inserted through the hole 44b, the lower opening 60a of the air vent pipe 60 is positioned below the step portion 88 and in the second path portion 82b. Is set. Therefore, the lower opening 60a, so faces the first space S and the second space S ₂ below the ₁ vortex is generated and discharged from the second space S ₂ in the drain pipe 86 below the air to the outside It becomes possible. Also in the second embodiment, the upper opening 60b is positioned above the upper end of the wall of the drain pan 40 in order to reliably prevent the air vent pipe 60 from being submerged.

[Operation of the second embodiment]
Next, the operation of the drainage structure of the ice making machine according to the second embodiment will be described. First, in order to attach the air vent pipe 60 to the drain port 42, the lower end of the air vent pipe 60 is inserted into the hole 44b of the cover member 44 from above as in the first embodiment, and the stopper portion 62 is inserted. The cover member 44 is abutted and engaged. Accordingly, the air vent pipe 60 has a lower opening 60a positioned in the second path portion 82b below the step portion 88 inside the drain pipe 86, and an upper end above the drain port 42 by a predetermined height. Then, the upper opening 60b is positioned so as to be opened in the air.

Then, the when the recipient has been drained discharged to the drain pan 40, than the first spiral portion generated in the space S ₁ in said first path portion 82a, since the lower opening 60a is positioned lower, the drain pipe The air existing in the drainage path such as 86 and the drainage pipe 56 can be released to the outside through the air vent pipe 60. That is, since the upper end portion 82 of the drain pipe 86 is composed of the first path portion 82a having a small inner diameter size and the second path portion 82b having a large inner diameter size, the vortex during drainage is placed inside the first path portion 82a. It can be generated only in the defined first space S ₁ , and the air inside the drain pipe 86 and the like can be discharged only by positioning the lower opening 60 a below the first space S ₁ . Can do. Thus, it may be set so as to face the insertion length of the drain pipe 86 of the air vent tube 60 into the second space S ₂ of the second path portion 82b, not to be dependent on the generation position of the vortex.

  Furthermore, according to the drainage structure of the ice making machine according to the second embodiment, in the same manner as the effect of the first embodiment, when the trap portion 56b is formed or the lateral pulling distance of the drain pipe 56 is increased. Even if there is, the air in the drainage channel escapes to the outside through the air vent pipe 60, and the drainage resistance is reduced, so that high pressure is applied to the drainage port 52 of the drainage tray 50, and the air does not escape, It is possible to prevent the backflow of the drainage accompanying the escape of air from the drainage port 52. Therefore, there is no possibility of contamination of ice blocks stored in the ice storage unit 18 due to the backflow of drainage, melting of ice blocks, or the like. Further, since the connection structure between the first path portion 82a and the second path portion 82b shown in the second embodiment is a simple structure in which the respective end surfaces are brought into contact with each other and connected by the connection hose 48, the drain pipe 86 is connected to the drain pan. 40 can be easily detached.

  The drainage structure according to the second embodiment can also be employed in the open cell type ice making mechanism 70 described above. That is, the upper end portion of the overflow pipe 74 that discharges the surplus portion (surplus water) of the ice making water is composed of the first path portion 82a and the second path portion 82b, so that the vortex at the time of drainage can be reduced. It can be generated only inside 82a.

Further, the step portion 88 generated at the connecting portion between the first path portion 82a and the second path portion 82b does not need to be formed in a step shape as in the second embodiment. For example, as shown in FIG. The cross-sectional shape of the lower end 84 of the first path portion 82a may be changed to an inclined shape. That is, even if the inclined as modifications to the cross-sectional shape of the lower end 84, the vortex during drainage occurs only in the interior of the first space S _1, the insertion length of the drain pipe 86 of the air vent pipe 60 of the may be set so that the lower opening 60a is positioned in the second space S _2.

  Further, as shown in FIG. 6, a cylindrical guide portion 44 c is projected upward corresponding to the hole 44 b in the cover member 44, so that the air vent pipe 60 after insertion is more stable. Also good. That is, by inserting the air vent pipe 60 into the drain pipe 86 through the guide portion 44c, the stopper portion 62 of the air vent tube 60 and the guide portion 44c are brought into contact with each other for positioning, and after the insertion. The air vent pipe 60 is stably fixed without shaking in the horizontal direction. Further, the structure of the cover member 44 shown in FIG. 6 can also be adopted in the first embodiment.

  In the second embodiment, the drain pipe 86 is composed of a cylindrical connecting portion that protrudes downward from the drain pan 40 and a tubular body that is connected in communication with the connecting portion. You may comprise from this tube.

It is a vertical side view which shows the drainage structure of the ice making machine which concerns on 1st Example. (a) is a schematic perspective view which shows a part of drainage structure of the ice making machine based on 1st Example, (b) is the A section enlarged view of (a). (a) is a vertical side view showing a drainage structure of an ice making machine according to a modified example, and (b) is an enlarged view of part B of (a). It is a vertical side view which shows the principal part of the drainage structure of the ice making machine which concerns on 2nd Example. It is a vertical side view which shows the principal part of the drainage structure of the ice making machine which concerns on the example of a change of 2nd Example. It is a vertical side view which shows the principal part of the drainage structure of the ice making machine which concerns on another modification of 2nd Example. It is a schematic perspective view which shows a general ice making machine from the front in the state which removed the upper panel and the front panel. It is a vertical side view which shows the drainage structure of the conventional ice making machine.

Explanation of symbols

11 Main body, 18 Ice storage section, 20 Ice making mechanism, 42 Upper drainage port (drain port)
42a Lower opening, 42b Upper opening, 46 Drain pipe (first embodiment)
52 Drain port (lower drain port), 56 Drain pipe, 60 Air vent pipe, 62 Stopper 74 Overflow pipe (drain pipe), 74a Upper drain port (inlet)
76 Air vent pipe, 76a Lower opening, 76b Upper opening, HWL Highest water level 82 Upper end part, 82a First path part, 82b Second path part 86 Drain pipe (second embodiment)

Claims (5)

An ice making mechanism (20) disposed above the inside of the main body (11), an upper drainage port (42, 74a) for discharging drainage from the ice making mechanism (20), and below the ice making mechanism (20) A lower drainage port (52) provided at the bottom of the ice storage unit (18), and a drain pipe (46,74) connecting the upper drainage port (42,74a) and the lower drainage port (52). The drainage of the ice making machine that discharges the drainage from the ice making mechanism (20) and the melted water from the ice storage section (18) to the outside through the drain pipe (56) connected to the lower drainage port (52). In structure
Air vent pipes (60, 76) opened at both ends are inserted into the drain pipes (46, 74) through the upper drainage ports (42, 74a), and the lower openings (60a) of the air vent pipes (60, 76) are inserted. 76a) is located inside the drain tube (46,74), and
A drainage structure for an ice making machine, wherein the upper opening (60b, 76b) of the air vent pipe (60, 76) is positioned so as not to be immersed in drainage. An ice making mechanism (20) disposed above the inside of the main body (11), an upper drainage port (42) provided in a drain pan (40) that receives drainage from the ice making mechanism (20), and the ice making mechanism (20 ) And a drain pipe (46) communicating with the upper drain port (42) and the lower drain port (52). The drainage of the ice making machine that discharges the drainage from the ice making mechanism (20) and the melted water from the ice storage section (18) to the outside through the drain pipe (56) connected to the lower drainage port (52). In structure
An air vent pipe (60) opened at both ends is inserted into the drain pipe (46) through the upper drainage port (42), and a lower opening (60a) of the air vent pipe (60) is inserted into the drain pipe (46). And located inside the
A drainage structure for an ice making machine, characterized in that the upper opening (60b) of the air vent pipe (60) is positioned above the highest water level (HWL) of the drain pan (40).   The air vent pipe (60) is detachably disposed with respect to the upper drainage port (42) and is positioned in the vertical direction by a stopper portion (62) provided on the outer peripheral surface of the air vent pipe (60). The drainage structure of the ice making machine according to claim 2.   4. The ice making device according to claim 2, wherein the lower opening (60 a) of the air vent pipe (60) is located below a vortex portion generated when drainage flows from the drain pan (40) into the drain pipe (46). The drainage structure of the machine. An upper end portion (82) of the drain pipe (86) is provided on a lower side of the first path portion (82a) and a first path portion (82a) connected to the upper drainage port (42, 74a). And a second path portion (82b) having a larger inner diameter than the first path portion (82a), and the lower openings (60a, 76a) of the air vent pipes (60, 76) The drainage structure for an ice making machine according to any one of claims 1 to 3, wherein the drainage structure is located in the second path portion (82b).

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