JPS62210367A - Automatic ice machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention: a. Industrial Application Field The present invention relates to an automatic ice making machine, and in particular, a sub-tank connected to an ice making water tank is provided with a liquid for controlling the liquid level in the ice making water tank. This invention relates to an automatic ice maker equipped with a surface control device.

b. Prior art Figure 6 shows a liquid level control device already proposed by the applicant. f
f1 (special 11111?j59-.184518) no[
Abbreviation v! 1, ice-making water is stored in an ice-making water tank 1.

An ice making section 3 for producing ice 2 is provided above the ice making water tank 1. The ice making section 3 includes an ice making plate 4 and an evaporator 5 attached to the back side of the ice making plate 4. Directly below the ice-making plate 4, a guide plate 6 is provided to guide the ice 2 to the water storage. A plurality of holes 7 are formed in the guide plate 6,
Ice-making water is led into the ice-making water tank 1 through this hole 7. A circulation pump 8 is connected to the ice-making water tank 1, and the circulation pump 8 supplies the ice-making water in the ice-making water tank 1 to the first water sprinkling section 1 provided above the ice-making plate 4 via a circulation pipe 9.
0. On the back side of the ice making plate 4, there is a t-tapal plate 1.
t Let the ice-making water from 1 flow down along the back surface of the ice-making plate 4.
A water sprinkler section 12 of IS2 is provided.

The ice-making water tank 1 is in fluid communication with a sub-tank 13 shown in FIG. tIS7 via a connecting pipe 19. sub tank 13
The liquid level of the ice making water in the ice making water tank 1 is ';I+
1111 Float device RA1 as a liquid level control device
4 is provided. The 70-tooth device 14 includes a 70-toto 15 that is displaced according to the vertical movement of the liquid level, a magnet 16 attached to the upper end of the float 15, and a 70-toto 15.
A guide section 17 that guides the vertical movement of the magnet 16, and a reed switch 18 that is provided within the guide section 17 and is activated when the magnet 16 approaches. Sub tank 131 communication body 2
0 is provided with its tip facing into the sub-tank 13. Like the ice-making water tank 1, the communicating body 20 is open to the atmosphere from above, and the liquid level in the ice-making water tank 1 and that in the communicating body 20 are the same due to the principle of a communicating pipe. Further, a closed chamber 21 is formed in the sub-tank 13 by the rise in the liquid level in the ice-making water tank 1, and the position of the closed chamber 21 is determined by the tip of the communication body 20. Note that the reference numeral 22 in FIG. 6 indicates an over 70-pipe, and the highest liquid level in the ice-making water tank 1 is obtained by this over 70-pipe 22.

Next, the operation of the conventional automatic ice maker configured as described above will be explained. During the ice-making cycle, the compressor 35 and the 7T ton 24 of the condenser W#23 shown in FIG. 10 are operated, and the refrigerant whose pressure is reduced in the capillary 25 is evaporated in the evaporator 5, and the evaporator 5 is cooled by its latent heat of evaporation. .

On the other hand, ice-making water sprinkled from the first drinking water section 10 by the operation of the circulation pump 8 flows down onto the surface of the ice-making plate 4, and during the flow, the ice-making water exchanges heat with the refrigerant in the evaporator 5 and is cooled. Ru. The cooled ice-making water passes through the hole τ1 of the guide plate 6, returns to the ice-making water tank 1, is sent again to the first water sprinkler, and is cooled on the ice-making plate 4. In this way, the ice-making water is gradually cooled, and water 2 is gradually generated on the surface of the ice-making plate 4. Along with this, the liquid level in the ice-making water tank 1 also gradually decreases.

As ice 2 continues to form and the liquid level in the communicating body 20 becomes lower than the tip and the closed m chamber 21 is opened to the atmosphere, the temperature increases by 70° to match the liquid level in the ice-making water tank 1. 15 begins to descend. When the ice 2 production progresses further and ice 2 of the desired size is obtained on the ice making plate 4, the magnet 16 activates the reed switch 18, and the 70-tooth device 14 issues a signal indicating the completion of ice making.

At the same time as the ice making completion signal is issued, the operation of the circulation pump 8 is stopped, the hot gas valve 26 is opened, hot gas flows into the evaporator 5, and a deicing cycle begins. At the same time, the otavalp 11 is also opened and the ice-making water is sprayed onto the back surface of the ice-making plate 4 through the second water sprinkling section 12. The contact surface of the ice 2 with the ice making plate 4 is melted by this ice making water and the hot water flowing into the evaporator 5.

The ice-making water from the second water sprinkling section 12 is then fed to the guide plate 6.
Ice making water is supplied into the ice making water tank 1 through the hole 7. Therefore, the ice-making water remaining in the ice-making water tank 1 when the ice-making cycle is completed is pushed into the sub-tank 13, and a closed chamber 21 is formed in the upper space of the sub-tank 13. Subsequently, as the water spraying from the second water spraying section 12 progresses to the back surface of the ice-making plate 4, the liquid level of the ice-making water in the ice-making water tank 1 rises, and the liquid level rises above 70 - the upper end surface of the pipe 22. Once this level is reached, a constant liquid level height is maintained beyond that level by the action of the over pipe 22.

When the ice 2 melts further and the contact surface of the ice 2 with the ice making plate 4 is completely melted, the ice 2 separates from the ice making plate 4, passes through the guide plate 6, and is stored in a water storage (not shown). be done. Then, a de-icing detection device (not shown) detects that the ice 2 is detached from the ice-making plate 4, and in response to a signal from the de-icing detection device, the over valve 11 and the hot gas valve 26 are closed, and the circulation pump 8 is activated. It is activated again and the ice making cycle described above is started.

By the way, ice-making water has the property that ice-making water containing impurities is difficult to freeze, whereas ice-making water with high purity is easily frozen, so as ice 2 is generated, the ice-making water in ice-making water tank 1 changes to ice-making water containing many impurities. become.

When the ice-making cycle is completed, the concentration of impurities is the highest (and in some cases, the impurities settle and accumulate on the bottom of the ice-making water tank 1. Then, at the same time as the de-icing cycle starts, the second water spray section 12 The sprinkled ice-making water pushes the impurities into the sub-tank 13. Therefore, ice-making water with a high concentration of impurities is supplied into the sub-tank 13, and its non-fluidity causes the impurities to settle and accumulate. As a result, due to these impurities, the float 15 does not descend to a predetermined position upon completion of ice making, resulting in an inconvenience in that the float device 14 does not issue a signal indicating completion of ice making.

The present applicant has already filed an application for an automatic ice maker to eliminate such inconveniences (Japanese Patent Application No. 132932/1982). FIG. 8 is a schematic diagram of the construction, and FIG. 9 is an enlarged view of the main parts of FIG. It is connected to a branch pipe 27. The T-shaped branch pipe 27 is
vII from a main pipe part 31 connected to the over-valve 11 and the water sprinkling part 12 of tJS2 via pipes 28 and 29, respectively, and a sub-pipe part 32 connected to a drain pipe 30 connected to the communication body 20. being intimidated.

A branch hole 33 is formed in the main pipe portion 31 for guiding ice-making water from the water pulp 11 to the drain pipe 30.

After the deicing cycle is completed, the sub pipe section 32 has an autovalp 1.
An air hole 34 is formed to prevent ice-making water from remaining in the drain pipe 30 when the drain pipe 1 is closed.

In the automatic ice maker that has been blown as described above, the ice making cycle is completed and the water pulp 11 is opened to enter the deicing cycle in which ice making water is sprinkled from the second water sprinkling section 12 onto the back surface of the ice making plate 4. At this time, a part of the ice-making water flows into the sub-tank 13 through the sub-pipe section 32 and the drain pipe 30, and removes settled and accumulated impurities in the sub-tank 13 into the ice-making water tank 1.
Push it inward.

Problems that the C6 invention attempts to solve.

In the conventional automatic ice maker configured as above,
The settled and accumulated impurities in the sub-tank 13 are pushed out into the ice-making water tank 1 by the ice-making water that has flowed into the sub-tank 13 from the drain pipe 30, and as a result, 70-115 in the sub-tank 13 descends, and the float device 14 It has the advantage of giving a signal of completion. However, during the deicing cycle, the amount of ice-making water continuously supplied into the sub-tank 13 is not sufficient to push out impurities into the ice-making water tank 1 due to flow resistance of the branch pipe 2, etc. As a result, the float 15 may not descend smoothly, or the amount of water discharged from the over pipe 22 to the outside of the ice making water tank 1 may increase due to the impurities being pushed out into the ice making water tank 1. There was a problem with the increase.

This invention has been made to solve this problem, so that the sedimentation and accumulation of impurities in the sub-tank 13 can be removed using an appropriate amount of ice-making water, and the liquid level in the ice-making water tank 1 can be reduced. It is an object of the present invention to provide an automatic ice making machine that can be correctly detected by a liquid level control device 14.

d0 Means for Solving Problems The automatic ice making machine according to the present invention includes a sub tank cleaning container 36 connected to the sub tank 13 via a drain pipe 30 and located above the liquid level in the ice making water tank 1; It is provided with a sift 37 provided in the sub-tank cleaning container 36 for intermittently pushing out impurities that have settled and accumulated in the sub-tank 13 into the ice-making water tank 1.

80 Effect In this invention, when the inside of the sub-tank cleaning container 36 becomes full of water, the ice-making water is drained into the drain pipe 3 by the siphon 3.
0 into the sub-tank 13, and the sub-tank 13
The sediment and accumulated impurities inside are pushed out into the ice-making water tank 1. The speed of ice-making water flowing into the sub-tank 13 is constant regardless of the speed of ice-making water supplied into the sub-tank cleaning container 36.

r, Example Embodiments of the present invention will be described below with reference to the drawings.

1 to 3 show an embodiment of the present invention, and the same or equivalent parts as in FIGS.

In the figure, a connecting pipe 40 whose one end is connected to the sub-pipe part 32
At the other end, a sub-tank cleaning container 36 having a siphon 37 therein is provided above the sub-tank 13. The siphon 37 has a discharge pipe 37m that penetrates inside the sub-tank cleaning container 36 and has an open upper end, and a discharge pipe 37a.
and a hollow introduction 9F 37b which is placed at a certain distance from the upper end thereof and also placed at a certain distance from the bottom of the sub-tank cleaning container 36.

The sub-tank cleaning container 36 has a wide discharge pipe 37a at its bottom.
Near the top end, the water level inside the sub-tank cleaning container 36 rises faster than at the bottom if the amount of water supplied to the sub-tank cleaning container 36 is constant. Fast 6 Note that the reference numeral 41 indicates an air hole 34 for removing air from the sub-tank cleaning container 36 when the inside of the connecting pipe 2O is clogged with ice-making water.

The sub-tank 13 is provided with a drain pipe 30 whose one end is connected to a discharge pipe 37a, with its tip pointing toward the bottom of the sub-tank 13. The cross-sectional area of the sub-tank 13 is made small except for the area where the float device 14 detects the completion of ice making, and the amount of water stored in the sub-tank 13 is kept small. A communicating body 20 is provided on the upper surface of the sub-tank 13 and has an open port 38 at its upper end and communicates with the atmosphere. This release port 38 allows the liquid level in the sub-tank 13 to match the liquid level in the ice-making water tank 1, and also allows the sub-tank cleaning volume n
When the ice-making water from 3B flows into the sub-tank 13, air is not tightly trapped in the upper part of the sub-tank 13 and inside the drain pipe 30, and the ice-making water flows smoothly into the sub-tank 13 from the sub-tank cleaning container 36. Note that the release port 38 is connected to the drain pipe 3.
Although there is no problem in controlling the liquid level in the sub-tank 13 even if it is in the middle of 0, the inflow speed from the sub-tank cleaning container 36 into the sub-tank 13 is such that
When installed in the drain pipe 30, the air inside the drain pipe 30 escapes smoothly, so that the maximum amount is achieved.

In the automatic ice maker configured as described above, when the water pulp 11 opens and enters the deicing cycle in which ice making water is sprayed from the second water sprinkling section 12 onto the back surface of the ice making plate 4, the ice making water flows into the subtank cleaning container 36. Ice making water is pipe 28, branch pipe Z7
, flows through connection 940. Then, only when the water level in the sub-tank cleaning container 36 rises and exceeds the upper end of the discharge pipe 37a, the ice-making water passes through the discharge pipe 37a and flows to the drain pipe 30, and at the same time, the air in the upper part of the introduction pipe 37b As a result, the ice-making water in the sub-tank cleaning container 36 is drawn out into the drain pipe 30 and is acted on by the siphon 37, regardless of the speed of the ice-making water flowing into the sub-tank cleaning container 36 through the connecting pipe 40. It flows into the sub-tank 13 through the drain pipe 30 at a predetermined speed. The inflow speed at this time is greater as the difference between the liquid level in the sub-tank cleaning container 36 and the liquid level in the sub-tank 13 is larger, and as the air pressure above the liquid level in the sub-tank 13 is smaller.

Therefore, ice-making water flows at a high flow rate through the drain pipe 30 into the sub-tank 13 where the ice-making water with the highest impurity concentration remains when the ice-making cycle is completed, and the impurities are pushed out into the ice-making water tank 1. . Furthermore, since the amount of water stored in the sub-tank cleaning container 36 is larger than that of the sub-tank 13, the ice-making water containing many impurities in the sub-tank 13 is replaced with almost fresh ice-making water in a short time. and,
The ice-making water pushed out from the sub-tank 13 is diluted within the ice-making water tank 1, and most of it is discharged from the ice-making water tank 1 through the over pipe 22.

During the deicing cycle when the overpulp 11 is open, water is supplied into the sub-tank cleaning container 36 through the connecting pipe 40, and when the water becomes full, the siphon 37 acts and the ice-making water flows into the sub-tank 13. The ice making water flowing into the ice making water 13 is intermittently turned around.

Figures 4 and 5 show examples of the invention.
A cheese X: 39 is installed in the middle of a circulation pipe 9 that guides the ice-making water in the ice-making water tank 1 to the first water sprinkling section 10 by a circulation pump 8, and this cheese 39 and the sub-tank cleaning container 36 are connected to a connecting pipe 40. connected via. The sub-tank cleaning container 36 is connected to the sub-tank 13 via a drain pipe 30. The drain W30 is connected to the lower part of the sub-tank 13, and when the ice-making water flows into the sub-tank 13 through the drain W3Q, it flows along the bottom surface of the sub-tank 13.

In the automatic ice maker of the second embodiment configured as described above, a deicing detection device (not shown) detects the detachment of the ice 2 from the ice making plate 4, and at this time, the deicing detection device (not shown) detects the detachment of the ice 2 from the ice making plate 4, and at that time, When the water valve 26 is closed and the circulation pump 8 is activated to start the ice-making cycle, the ice-making water flows into the sub-tank cleaning container 36 through the circulation pipe 9, the cheese 39, and the connecting pipe 40. There will be an influx. Inside the sub-tank cleaning container 36, the siphon 3 is flushed every time the sub-tank cleaning container 313 becomes full of water, similar to the first embodiment described above.
7 acts, and ice-making water is intermittently supplied into the sub-tank 13.

At this time, since the ice-making water flows in along the bottom surface of the sub-tank 13, it is prevented that the ice-making water presses down the float 15 during the inflow and causes the float WL 14 to issue an erroneous signal indicating the completion of ice making.

When the ice-making cycle is opened while the circulation pump 8 is not operating, water is supplied into the sub-tank cleaning container 36 through the connecting pipe 40, and when the water becomes full, the siphon 37 acts to clean the sub-tank 1.
Ice-making water is intermittently flowed into the ice-making water tank 1, and each time the ice-making water containing impurities in the sub-tank 13 is pushed out through the drain pipe 30 into the ice-making water tank 1, and then the ice-making water is poured into the ice-making water tank 1 through the drain pipe 30.
Water is drained out of the ice making water tank 1 from the pipe 22.

Although the liquid level control device using the float 15 has been described in both the first embodiment and the second embodiment, the present invention is not limited to this. It may be a liquid level control device using an electrode rod.The shape of the on 37 may be an inverted U-shape. -g0 According to the invention, as described in detail, the sub-tank 13
A sub-tank cleaning container 36 is connected to the ice-making water tank 1 via a drain pipe 30 and located above the liquid level in the ice-making water tank 1, and a sub-tank cleaning container 36 is installed in the sub-tank cleaning container 36 to remove impurities that have settled and accumulated in the sub-tank 13 from the ice-making water. By providing a siphon 37 for intermittent extrusion into the tank 1, sedimentation and accumulation of impurities in the sub-tank 13 are removed, and the liquid level height in the ice-making water tank 1 is accurately detected by the liquid level control device. be done.

In addition, a large amount of ice-making water is intermittently flowed into the sub-tank 3 from the sub-tank cleaning container 36, and this ice-making water efficiently drains the ice-making water in the sub-tank 13 (because it is pushed out into the ice-making water tank 1, the ice-making water in the sub-tank 13 is Another effect is that the amount of ice-making water used to remove sedimentation and accumulation of impurities can be kept low.

[Brief explanation of drawings]

Fig. 1 is a sectional view of a sub-tank cleaning container showing an embodiment of the present invention, Fig. 2 is a schematic configuration diagram of an automatic ice making machine in which the sub-tank washing container of Fig. 1 is used, and Fig. 3 is a sectional view of the sub-tank washing container shown in Fig. FIG. 4 is a schematic configuration diagram showing another embodiment of the present invention, FIG. 5 is a cross-sectional view of the sub-tank shown in FIG. 4, and FIG. 6 shows an example of a conventional automatic ice maker. A schematic configuration diagram, FIG. 7 is a sectional view of the sub-tank in FIG. 6, FIG. 8 is a schematic configuration diagram showing another example of the conventional automatic ice maker, FIG. 9 is a sectional view of the branch pipe in FIG. 8, FIG. 10 is a refrigeration circuit diagram of the automatic ice maker. 1. Ice making water tank, 2. Ice, 3. Ice making section,
13...Sub tank, 14...Float device, 30...Drain pipe, 36...
・Subtank cleaning container, 37...Sire. Note that the same reference numerals in each figure indicate the same or corresponding parts. Patent Applicant: Hoshizaki Deniso Co., Ltd. Agent: Teru Sogado Figure 2 Figure 3 Figure 4 Figure 7 Figure 8 Figure 9 Figure 10

Claims (1)

[Claims] 1) an ice-making water tank (1) that stores ice-making water supplied to an ice-making section (3) that produces ice (2); and an ice-making water tank (1) that is in liquid communication with the ice-making water tank (1). The sub tank (13) and
An ice making water tank (1) is provided inside this sub tank (13).
), wherein the automatic ice maker is equipped with a liquid level control device (14) for controlling the liquid level height in the sub tank (13).
The ice making water tank (
a sub-tank cleaning container (36) located above the liquid level in the ice-making water tank (1); ) A siphon (37) for intermittently extruding ice into the ice maker. 2) The automatic ice maker according to claim 1, wherein the amount of water stored in the sub-tank cleaning container (36) is larger than the amount of water stored in the sub-tank (13). 3) The sub-tank cleaning container (36) is connected to a pipe (28,
The automatic ice maker according to claim 1 or 2, wherein the automatic ice maker is connected to a connecting pipe (19) branched from the ice maker (29). 4) The sub-tank cleaning container (36) is connected to a circulation pipe (9) that sends ice-making water to the ice-making section (3) for ice-making during the ice-making cycle.
3. The automatic ice maker according to claim 1 or 2, wherein the automatic ice maker is connected to a connecting pipe (19) branched from the ice maker.