JPH07310966A - Ice making part structure of falling ice making apparatus - Google Patents

Abstract

PURPOSE:To provide an ice making part structure wherein a deluge apparatus and related parts can be manufactured with ordinary manufacturing precision and be likely to be assembled at a low cost, and wherein positioning and fixation of the deluge apparatus are secured. CONSTITUTION:A falling ice making apparatus comprises cooling coils 14, 15 through which a refrigerant passes, a pair of ice making plates 17, 18 vertically provided back to back holding the cooling coils therebetween, a pair of mounting plates 11, 12 vertically provided adjoining to each other at both side ends of the ice making plates for holding bent ends 14a, 15a of the cooling coils, and an ice making water deluge apparatus 22 and an ice removal water deluge apparatus 21 both located on the upper portion of the ice making plates and extending between the mounting plates. In the ice making apparatus, extension fins 27a, 27b formed on the outer side surface of the ice making deluge apparatus extending longitudinally are held between mounting brackets 11a, 12a on the upper portion of the mounting plates, and the ice removal water deluge apparatus is held between the upper end of the ice making plate and the lower surface of the ice making water deluge apparatus and a lower half of the ice removal water deluge apparatus is inserted between the pair of the ice making plates.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called flow-down type ice making machine which freezes ice-making water while the ice-making water flows down on the surface of a pair of ice-making plates which are hung vertically back to back. It is about structure.

[0002]

2. Description of the Related Art In the above-mentioned flow-down type ice making machine, which is one type of automatic ice making machine, ice making water flows down the surface of an ice making plate cooled by the heat of vaporization of a refrigerant to make ice. The cooling spiral pipe through which the refrigerant flows is provided in contact with the back surface of the ice making plate. Generally, two (a pair) ice making plates are arranged back to back, and the cooling spiral pipe is interposed between them. Many structures (Japanese Utility Model Publication No. 62-176669, Japanese Utility Model Publication No. 61-3)
9262, Japanese Utility Model Publication No. 1-253838, and Japanese Patent Publication No. 62-18820).

In such a structure, since the ice making plate is made of a thin metal material, the rigidity and strength as a whole are given by the pair of mounting plates for holding the curved ends of the cooling flexible pipe and the main body frame connecting them. To be An ice making water sprinkler and a deicing water sprinkler are provided above the ice making plate along the horizontally long ice making plate between the mounting plates. This sprinkler for deicing water sprinkles deicing water between the backs of a pair of ice making plates during the deicing cycle of an ice making machine, and the sprinkler for ice making water is an outwardly facing ice making plate during the ice making cycle of an ice making machine. Ice-making water is sprayed along the surface, and the ice-making water flows down while contacting the surface of the ice-making plate, that is, the ice-making surface.

The above-mentioned positioning of the sprinkler in the longitudinal direction (generally in the lateral direction) may be carried out by fitting the above-mentioned mounting plate into the groove formed at the end of the side surface of the sprinkler. Since it takes time, the structure of assembling the water sprinkler by one-touch operation is also proposed, and the applicant of the present invention has filed Japanese Patent Application No. 5-34991.
It has been filed as an issue.

The structure according to this proposal will be briefly described with reference to FIG. 7 which is a perspective view for explaining the structure.
Two pairs of ice making plates 2a, 2b are arranged side by side between a and 1b, and cooling flexible pipes 3a, 3b extending between the ice making plates are fixed and supported by the mounting brackets 1a, 1b. The sprinkler 4 for deicing water and the sprinkler 7 for ice-making water are combined and attached to the square holes in the upper portions of the mounting brackets 1a and 1b.
The deicing water sprinkler 4 is configured by integrating two horizontal fine sprinklers 5 at a connecting portion 6, while the ice making water sprinkler 7 has two
The horizontal wide water sprinkling cylinders 8 parallel to each other are integrated by a connecting portion 9. Positioning stoppers 8a and 8b are provided on the outer surface of the lateral wide water sprinkler 8 so as to project therefrom. In the plan view of FIG. 8, the above-mentioned ice making water sprinkler 7 is shown in a fixed state. The stoppers 8a, 8b are formed with grooves or slots for receiving the edges of the mounting bracket 1a as shown in the drawing, and when the sprinkler 7 is pushed in the direction of arrow A and reaches the position shown in the drawing. In addition, the water sprinkler 7 is designed to be positioned and fixed by engaging the slot with the mounting bracket 1a as shown in the drawing.

[0006]

In the above-mentioned conventional structure, when the mounting plate is fitted into the groove on the outer side of the sprinkler to position and fix the sprinkler, the dimensions of the groove and the like are accurately machined. If it is not, it may be difficult to insert it, or conversely, a gap may be generated and rattling may occur.

Further, as shown in FIGS. 8 and 9, the sprinkler 7 is inserted into the square hole of the mounting plate or the mounting bracket to engage the groove (slot) formed in the stopper with the mounting bracket. The structure causes the following problems. That is, in the push-fitting structure as shown in FIG. 8, the sprinkler 7 is generally made of plastic and utilizes the elasticity of the stoppers 8a and 8b. Therefore, if a large error occurs in the mutual distance between the stoppers 8a and 8b and the square hole, a serious problem will occur. For example, when the stopper groove spacing M is larger than the design dimension with respect to the square hole spacing L, as shown in FIG.
The end of the stopper 8b is scraped off, resulting in a rolled shape,
In the opposite case, the stoppers 8a and 8b lose their locking function or are loose, so that the stoppers 8a and 8b easily come off in the direction of arrow B in FIG. One of the reasons is that the plastic stoppers 8a and 8b are softer than the metal mounting plate 1a, but in order to prevent this, it is necessary to significantly improve the manufacturing accuracy of each member, which increases the cost. Will be unavoidable.

Further, in order to eliminate the drawbacks described above with reference to FIGS. 8 and 9, as shown in FIG. 10, the direction in which each stopper 8A, 8B extends is opposite to that shown in FIG. Although it may be oriented, even in this structure, unless the manufacturing precision is increased, an ice making structure that is easy to assemble and has a reliable positioning of the sprinkler cannot be obtained.

More specifically, the sprinkler 8 for ice-making water is provided in the lower surface of the water-spraying cylinder 8 so that the water-spraying hole is surely located at a predetermined position on the surface (ice-making surface) of the ice-making plates 2a and 2b. Need to be positioned. If the position of the water spray holes of the water spray cylinder 8 is displaced with respect to the ice making plates 2a and 2b, the flow of the ice making water on the ice making surface changes, and irregular ice and irregular ice occur, which not only impairs the quality of the ice. In some cases, deicing may not be possible. Similarly, the deicing water sprinkler 4 must also be positioned so that its sprinkling holes are located at predetermined positions with respect to the back surfaces of the ice making plates 2a and 2b. Ice making plates 2a and 2b
If the position of the sprinkler hole is deviated with respect to, the flow of deicing water will change and the deicing ability will decrease. Further, if the ice making water sprinkler 7 and the deicing water sprinkler 4 come out in the direction of the arrow B in FIG. 8, the water flow overflows to the outside of the ice making part, which causes a serious accident.

Although not shown in FIG. 8, since the interior of the sprinkler becomes dirty with water stains and impurities such as calcium and silicon contained in the water after long-term use, it is not shown in FIG.
It is desirable to provide a cleaning plug to be removed and used when cleaning the inside of the sprinkler.

This cleaning plug is a conical plug made of an elastic material such as rubber, and it is prevented from coming off by an elastic force which fits into a hole formed in the sprinkler. As a matter of course, there is a decrease in elastic force due to long-term use, so that the cleaning plug may loosen and water leakage may occur. At this time, if the stopper of the sprinkler is loosely engaged, the sprinkler may be pushed forward by water pressure (on the side opposite to the cleaning plug, in the direction of arrow B in FIG. 8). Therefore, in the end, the cleaning plug comes off, and water spatters in all directions from the holes that the cleaning plug came out of.
Problems such as ice formation and water leakage will occur. Therefore, the present invention is a downflow type ice making machine in which a water sprinkler and related parts can be manufactured with normal manufacturing accuracy, is easy to assemble at low cost, and is capable of reliably positioning and fixing the water sprinkler and locking a cleaning plug. It is an object of the present invention to provide an ice making structure of the above.

[0012]

In order to achieve the above-mentioned object, an ice making part structure according to the present invention comprises a cooling corrugated pipe through which a refrigerant flows and at least a pair of ice-making parts standing upright with the cooling corrugated pipe sandwiched therebetween. Downflow type having plates, a pair of mounting plates standing on both ends of the ice making plate and holding curved ends of the cooling corrugated pipe, and an ice making water sprinkler disposed above the ice making plate and extending between the mounting plates In an ice making machine, extension fins formed on the outer surface of the ice making water sprinkler are sandwiched between a pair of mounting brackets of the mounting plates, and deicing water is provided between the upper end of the ice making plate and the lower surface of the ice making water sprinkler. The water sprinkler is sandwiched and the lower half of the sprinkler for deicing water is inserted between a pair of ice making plates. It is also possible to fix the ice making water sprinkler by pressing the top of the ice making water sprinkler with the top plate of the ice making machine. In addition, a concave portion may be formed on the lower surface of the ice making water sprinkler and a convex portion may be formed on the upper surface of the deicing water sprinkler, and the concave portion and the convex portion may be fitted together. Further, a cleaning plug is fitted into a cleaning hole formed on one end surface of the ice making water sprinkler, and the cleaning plug is brought into contact with or close to an interior member of a main body frame that connects a pair of mounting plates to each other. It can also be provided.

[0013]

According to the above-mentioned structure, the ice making water sprinkler for spraying ice making water on the surface of the ice making plate cooled by the cooling spiral pipe has the extension fins formed on the outer side surface of the ice making plate. It is sandwiched and firmly positioned and fixed. Further, the deicing water sprinkler is sandwiched between the upper end of the ice making plate and the lower surface of the ice making water sprinkler, and the lower half thereof is inserted between the pair of ice making plates to position and fix the deicing water sprinkler. To be done. If the top of the ice making water sprinkler is pressed down by the top plate of the ice making machine, the vertical position of the ice making water sprinkler can be firmly fixed. Further, by fitting the projection formed on the upper surface of the deicing water sprinkler into the concave portion formed on the lower surface of the ice making water sprinkler, the ice making water sprinkler and the deicing water sprinkler can be connected to each other. It is fixed without any displacement. In addition, the cleaning plug removed when cleaning the inside of the sprinkler,
Since it is in contact with or close to the inner wall surface of the interior member, it does not fall off, and even if there is a dimensional error in the installation of the water sprayer, the function of the water sprayer is always achieved.

[0014]

Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same or corresponding parts. FIG. 1 is an exploded assembly view of an embodiment of an ice making section of a downflow type ice making machine according to the present invention, FIG. 2 is a plan view showing a mounting state of a sprinkler for ice making water, and FIG. The internal structure is shown in a partial cross section taken along the line III-III in FIG.
Receives and supports curved ends 14a, 15a of the cooling coils 14,15. As inferred from the figure, the cooling coil 1
Reference numerals 4 and 15 are supported by a mounting plate 12 at other curved ends (not shown), and the mounting plate 1 is vertically installed in a pair so as to face each other.
It extends between 1 and 12. The pair of ice making plates 17 and 18 are sandwiched between the cooling corrugated pipes 14 and 15 in contact with each other.
It is provided in pairs. In the ice making plates 17 and 18, the side in contact with the cooling corrugated tubes 14 and 15 is the back surface, and the surface facing outward is the surface through which the ice making water flows. These ice making plates may have a structure as disclosed in, for example, Japanese Utility Model Laid-Open No. 62-176669 mentioned above, but of course, it is not limited to such an ice making plate.

On the ice making plates 17 and 18, a sprinkler 21 for deicing water and a sprinkler 22 for ice making water are attached. The deicing water sprinkler 21 is, as described later, an ice making water sprinkler 22.
The sprinkler 22 of the latter is fixed by being pressed into the
Is a generally U-shaped or upward U-shaped mounting bracket 11 formed or arranged above the mounting plates 11 and 12.
It is fixed by a and 12a. Sprinkler 21 for deicing water
Has two deicing pipes 24 corresponding to the number of sets of the ice making plates 17 and 18, and these are integrated by a connecting pipe 25 having a water supply port 25a.

The ice making water sprinkler 22 has two prismatic water spray pipes 27 and two prismatic connection pipes 28 and 29 which are connected to their respective ends, and are shown as a whole. Such a rectangular frame-shaped structure or an O-shaped structure is provided so that water can be uniformly sprayed even if the water pressure distribution is uneven. On one side of the connecting pipe 29, a joint elbow 29a is projectingly provided in an L-shape on a side portion of an intermediate portion thereof, and on the outer end surface of the other connecting pipe 28, two cleanings of a truncated cone shape schematically shown. The stopper 28a is fitted. Cleaning plug 28a
Literally closes the cleaning hole 28b used for cleaning the inside of the sprinkler 22. Sprinkler pipe 27
Extension fins or ears 27a, 27b (which may have the same shape) are integrally formed on the outer side surface of the above embodiment.

In addition to FIG. 3, referring to FIG. 4, which shows an assembly state of the deicing water sprinkler 21 and the ice making water sprinkler 22 as an exploded view from below, the bottom of each deicing pipe 24 is referred to. The half part is inserted between the pair of ice making plates 17 and 18, and the pair of holding fins 24a horizontally projecting from the boundary between the lower half part and the upper half part horizontally extend the ice making plate 1.
Supported on 7,18. And on the bottom of the lower half,
A large number of water sprinkling holes 24b are formed at intervals in the longitudinal direction, and water is made to flow between the back surfaces of the ice making plates 17, 18 as is well known at the time of deicing. As a result, the ice generated on the ice making surface of the ice making plate is deiced in cooperation with the hot gas flowing through the cooling corrugated pipe 15.

Similarly, referring to FIGS. 2, 3 and 4, the sprinkler pipe 27 of the sprinkler 22 for ice making water is provided so as to be mounted on the deicing pipe 24. The deviation of the sprinkling pipe 27 in the longitudinal direction is caused by the ear portion 27, as clearly shown in FIG.
Mounting brackets 11a, 12 that approach both ends of b
It is prevented by a. That is, positioning and holding of the sprinkler 22 in the longitudinal direction are performed by the mounting brackets 11a and 12a of the mounting plates 11 and 12. On the other hand, FIG. 3 and FIG.
As can be seen from the above, a groove (recess) 27c having a saddle-shaped cross section is formed on the lower surface of the water sprinkling pipe 27.
The head portion, that is, the upper half portion (convex portion) of the deicing pipe 24 fitted in the space portion between 18 is received. Therefore, the deicing pipe 24 and the sprinkler pipe 27, and by extension, the sprinkler 21 for deicing water
The relative displacement of the ice making water sprinkler 22 in the horizontal direction (the direction horizontally extending in the left and right direction in FIG. 3) is prevented. Groove 27c
Across the bottom of the sprinkling pipe 27 with a large number of sprinkling holes 2
7d are formed at intervals in the longitudinal direction, and during ice making operation, ice making water is sprayed and supplied to the front surface of the ice making plates 17, 18 or the ice making surface.

Referring again to FIGS. 2 and 3, the mounting plates 11 and 12 for holding the curved ends of the cooling flexible tubes 14 and 15 are like the screws shown in the body frame 31 via the mounting brackets 11a and 12a. Various means (see especially FIG. 2) to provide greater structural strength. The mounting brackets 11a and 12a sandwich the ears 27a and 27b of the water sprinkler 22 in the longitudinal direction and terminate near the outer surface of the water sprinkling pipe 27. Three
The inner surface of 1a is close to the outer surface of the cleaning plug 28a.
Therefore, the sprinkler 22 is regulated in position in both the longitudinal direction and the lateral direction, and the cleaning plug 28a is in contact with or close to the interior member 31a. Therefore, the sprinkler 22 cannot be assembled unless it is firmly inserted. It will not fall off even if it becomes loose after long-term use.

By adopting the above-mentioned configuration, FIG.
As shown in FIG. 1 and FIG. 12, the ice making water sprinkling holes 27 d provided on the lower surface of the water sprinkling pipe 27 are provided in the ice making plates 17, 1.
The ice-making surfaces 17b and 18b defined between the plurality of partition portions 17a and 18a of 8 are reliably positioned at a predetermined position without displacement. Therefore, the flow of ice making water on the ice making surfaces 17b, 18b of the ice making plates 17, 18 is stabilized, and good quality ice is produced. In addition, deicing pipe 2
Since 4 is firmly positioned with respect to the sprinkling pipe 27, the sprinkling hole 24b for deicing water formed on the bottom surface of the deicing pipe 24 also has a predetermined position with respect to the back surfaces of the ice making plates 17 and 18, without being displaced. It will be surely located at the position. Therefore, the deicing water can flow stably, and an excellent deicing ability can be exhibited.

Further, as described above, the mounting bracket 1
Sprinklers 21 and 2 whose longitudinal and lateral displacements, that is, displacements in the horizontal plane, are restricted by 1a and 12a and the body frame 31.
A heat insulating plate 33 is arranged above 2 and is firmly fixed by a top plate 35 located above. In the ice making unit structure having such a configuration, the ice making operation and the deicing operation are performed in the same manner as in a normal flow-down type ice making machine, and the ice making water sprinkler 22 to which the ice making water is supplied is connected to the ice making plates 17, 18. Ice-making water is sprayed on the ice-making surface, and deicing water is sprayed between the ice-making plates 17, 18.

In the above-mentioned embodiment, an example in which there are two pairs of ice making plates 17 and 18 has been described, but if there are more pairs, such as three and four, the size is increased accordingly. However, it will be apparent to those skilled in the art that the same idea can be dealt with so that the deicing water pipe 24 of the sprinkler 21 and the sprinkler pipes 27 of the sprinkler 22 may be increased to three and four. As shown in FIG. 5, the sprinkler for ice-making water has two sprinkling pipes 127 and a connecting pipe 129 integrally formed into a U-shape, and each sprinkling pipe 1
The tip portion of 27 may be reinforced with a connecting plate 128.
As shown in FIG. 7, it may be configured like a flat box-shaped rectangular water sprinkler 222, but in both cases, the ear portions 127a, 127b, 227a, 227b are formed on the outer surface as in the above-described embodiment. , Which can be used for positioning and fixing.

[0023]

As described above, according to the present invention, the sprinkler for ice making water is arranged between the pair of mounting brackets provided on the mounting plate, and the ear formed on the outer surface of the sprinkler. With the above-mentioned mounting bracket close to the longitudinal end of the part,
Since the sprinkler for ice making water is positioned and regulated for movement, the allowable dimensional tolerance of each member becomes loose and the manufacturing cost decreases.
In addition, the ice making water sprinkler can be easily assembled only by placing it on the mounting plate, and the position of the ice making water sprinkler with respect to the ice making plate is stable, and variations in water sprinkling are reduced. Further, since the sprinkler for deicing water is sandwiched between the upper end of the ice making plate and the lower surface of the sprinkler for ice making water, and the lower half part thereof is inserted between the pair of ice making plates, the sprinkler for deicing water is also firmly attached. The deicing water sprinkler is prevented from falling off and the deicing water sprinkling hole is not displaced.

If the upper portion of the ice making water sprinkler is pressed down and fixed by the top plate of the ice making machine, the ice making water sprinkler can be easily positioned and regulated in the vertical direction. Further, by fitting the projection formed on the upper surface of the deicing water sprinkler into the concave portion formed on the lower surface of the ice making water sprinkler, the ice making water sprinkler and the deicing water sprinkler can be connected to each other. The ice making water sprinkler and the deicing water sprinkler can be positioned more easily without being displaced. Further, since the cleaning plug fitted to the one end surface of the water sprinkler is disposed in contact with or close to the interior member, it is possible to prevent assembly failure and prevent falling even during long-term use. it can.

[Brief description of drawings]

FIG. 1 is an exploded view of the entire structure of an ice making section of a downflow type ice making machine according to an embodiment of the present invention.

FIG. 2 is a plan view showing a main part of the ice making structure of FIG.

FIG. 3 is a partial cross-sectional view taken along the line III-III in FIG.

4 is a partially exploded view showing an ice making water sprinkler and a deicing water sprinkler in the ice making section structure of FIG. 1. FIG.

FIG. 5 is a partial perspective view showing a modified embodiment in which a part of FIGS. 1 to 4 is modified.

FIG. 6 is a partial perspective view showing another modified embodiment in which a part of FIGS. 1 to 4 is modified.

FIG. 7 is an exploded view showing the structure of an ice making section in a conventional downflow type ice making machine.

8 is a partial plan view showing a part of the ice making unit structure of FIG. 7. FIG.

9 is a partially enlarged view for explaining a defect situation of the ice making part structure of FIG. 7 which occurs in a region surrounded by a chain line IX in FIG.

FIG. 10 is a partial enlarged view of a reference example for eliminating the drawbacks of the conventional stopper shown in FIG.

FIG. 11 is a partial plan view showing the positional relationship between the sprinkler for ice-making water and the ice-making plate in the ice-making section structure of FIG. 1.

FIG. 12 is a partial side view corresponding to FIG. 11.

[Explanation of symbols]

11, 12 ... Mounting plate, 11a, 12a ... Mounting bracket, 14, 15 ... Cooling spiral pipe, 14a, 15a ... Curved pipe of cooling spiral pipe, 17, 18 ... Ice making plate, 21 ... Sprinkler for deicing water,
22 ... Sprinkler for ice making water, 24 ... Deicing pipe, 27 ... Sprinkling pipe, 27a, 27b ... Ear, 27c ... Groove, 28 ... Connection pipe, 28a ... Washing plug, 31 ... Main frame, 31a ... Interior member, 122 ... Ice making water sprinkler, 127 ... Sprinkling pipe, 127a, 127b ... Ear part, 222 ... Ice making water sprinkler, 227 ... Sprinkling pipe, 227a, 227b ... Ear part.

Claims (4)

[Claims] 1. A cooling corrugated tube through which a refrigerant passes, at least a pair of ice-making plates standing upright with the cooling corrugating tube sandwiched between them, and curved ends of the cooling corrugated tube standing upright on both side ends of the ice-making plate. In a downflow type ice maker having a pair of mounting plates to hold, and an ice making water sprinkler disposed above the ice making plate and extending between the mounting plates, an extension formed on an outer surface of the ice making water sprinkler. The fins are sandwiched between the mounting brackets of the pair of mounting plates, the deicing water sprinkler is sandwiched between the upper end of the ice making plate and the lower surface of the ice making water sprinkler, and An ice making part structure of a downflow type ice making machine, wherein a lower half part is inserted between the pair of ice making plates. 2. The structure of an ice making unit of a down flow type ice making machine according to claim 1, wherein the ice making water sprinkler is fixed by pressing an upper portion of the ice making water sprinkler with a top plate of the ice making machine. . 3. The convex portion formed on the upper surface of the deicing water sprinkler is fitted into the concave portion formed on the lower surface of the ice making water sprinkler. The structure of the ice-making part of the downflow type ice-making machine. 4. A cleaning plug is fitted in a cleaning hole formed in one end surface of the water sprayer for ice making water, and the cleaning plug contacts an interior member of a main body frame for connecting the pair of mounting plates to each other. The ice making unit structure of the flow-down type ice making machine according to any one of claims 1 to 3, wherein the ice making unit is arranged in contact with or close to each other.