JPH0218468Y2 - - Google Patents

Description

[Detailed description of the invention] a. Industrial application field The present invention relates to a de-icing device for a down-flow ice maker, and in particular, as a de-icing mechanism, the interior of the de-icing water tank is divided into two, and the de-icing system has an efficient and simple structure. The present invention relates to novel improvements to achieve hot water deicing.

b. Prior Art There are various configurations of de-icing devices that have been used in the past, but to describe a typical configuration, as shown in Fig. 4, the ice-making water circuit 1 has a It is composed of an ice-making plate 2, a water collection gutter 3, an ice-making water tank 4, an ice-making water pump 5, and an ice-making water sprinkling pipe 6. The structure is such that ice is grown on the ice making surface 2d of the falling type ice making plate 2 by spraying water from the ice making plate 2 and flowing down the falling type ice making plate 2.

The deicing water circuit 10 includes a deicing water tank 12 for receiving ice making water from the ice making water tank 4 via an overflow pipe 11, and a hot water tank 12 for supplying the deicing water from the deicing water tank 12 to a hot water tank 13. It consists of a pump 14 and a deicing water pump 15 for supplying deicing water from the deicing water tank 12 to the flowing ice making plate 2, and the hot water tank 13
The water is heated by a heater 16 and supplied into the deicing water tank 12 via an overflow pipe 13a.

Such a conventional de-icing device requires three tanks: an ice-making water tank 4, a hot water tank 13, and a de-icing water tank, which increases the size of the device. 2 water storage parts,
In other words, a deicing device for a down-flow ice maker that is divided into a first water storage part and a second water storage part, and a compressor's high-pressure side pipe is arranged in the small-volume second water storage part has already been proposed (Jikkosho et al. 56-53246).

c. Problems to be solved by the present invention The de-icing device for the down-flow ice maker that has already been proposed has a simpler structure and a smaller device than the conventional ones, but the de-icing device is Since it is not possible to obtain suitable insulation material to separate the ice water tank, the second
The desired effect of heating only the water storage part could not be obtained, and the structure of the second water storage chamber was deep (same depth as the first water storage chamber) and the opening was narrow, so the high pressure side distribution with vibration was Since it was almost impossible to arrange the channel and clean the inside of the second water storage chamber, it was far from being put to practical use.

The present invention has been made to solve these problems, and its purpose is to provide a practical de-icing device with a simple structure and a reduced size.

d Means for solving the problem A de-icing water tank for storing surplus water of an ice-making water tank, consisting of a first water storage section and a second water storage section separated from the first water storage section by a weir. , the second
In a deicing device for a down-flow ice maker having a deicing water tank in which a high-pressure side pipe line of a compressor is arranged in a water storage part, a communication part having a concave opening is provided in the upper center of the weir part, and a second water storage part is provided. The first water storage section is made shallower than the first water storage section, the ratio of the opening area to the volume thereof is increased, and the high-pressure side pipe is U-shaped and arranged horizontally.

e Effect: Since a concavely opened communication part is provided at the upper center of the weir, the water in the second water storage part only communicates with the relatively warm water in the surface layer in the first water storage part; The water in the water storage section can be easily heated, and the temperature of the water in the first water storage section does not need to be increased. In addition, the second water storage part is made shallower than the first water storage part, and the ratio of the opening area to its volume is increased, and the high-pressure side pipe is made into a U-shape and is arranged horizontally, so that the weir part has insulation properties. It is possible to heat only the second water storage chamber without using materials with superior properties, and since the vertical section of the high-pressure side piping extending downward from its attachment point is short, it is possible to reduce the vibration of the compressor. In addition, the second water storage chamber, which is shallow and has a wide opening, is easy to clean.

In addition, if the ice making water tank overflows,
Alternatively, the water stored in the second water storage chamber often contains fine dust, and the dust tends to accumulate in these water storage chambers.

f. Embodiment Hereinafter, a preferred embodiment of the de-icing device for a down-flow ice maker according to the present invention will be described in detail with reference to the drawings.

Note that parts that are the same or equivalent to those of the conventional example will be described with the same reference numerals.

What is indicated by the reference numeral 1 in the drawing is an ice making water circuit having a falling type ice making plate 2 installed almost vertically, and an ice making water circuit provided in an ice making water sprinkling header 2a above the falling type ice making plate 2. Watering pipe 6
An ice-making water supply pipe 5a having an ice-making water pump 5 is connected to the ice-making water sprinkling pipe 6. This ice-making water water supply pipe 5a is connected to the outlet pipe 4a of the ice-making water tank 4.
The ice-making residual water from the water collection gutter 3 disposed at the lower part of the flowing-down type ice-making plate 2 is supplied onto the filter 4b provided at the upper part of the ice-making plate 2.

As shown in FIG. 2, the falling type ice making plate 2 is formed into a substantially U-shaped cross section, and a compressor (not shown) is installed on the ice removal surface 2b formed on the back surface of the falling type ice making plate 2. A refrigerant flow path 2c is formed for guiding refrigerant from the flow-down type ice making plate 2.
The ice-making surface 2d formed on the surface of the ice-making surface 2d is sprayed with water from the water sprinkling hole (not shown) of the ice-making water sprinkling pipe 6, and the ice-making water flows down as shown by the arrow.

The ice-making water overflowing from the overflow pipe 4c of the ice-making water tank 4 is supplied into the de-icing water tank 12 through the connecting pipe 4d and the inlet pipe 4e, and the inside of this de-icing water tank 12 is formed integrally with the tank case 12a. The vertical weir part 12b separates the first water storage part 12c and the second water storage part 12d, and the bottom part 12j of the second water storage part 12d is separated from the first water storage part 12c by the vertical weir part 12b.
The second water storage part is provided at a higher position than the bottom part 12h of the water storage part 12e, that is, the second water storage part is made shallower than the first water storage part, and the high pressure side pipe line 16 of the compressor is connected to the second water storage part 12d. It is arranged horizontally in the shape of a letter. Note that the high pressure side pipe line 16 is connected to the second water storage chamber 12.
It can be attached to the side wall of d. Second water storage chamber 1
2d tends to accumulate accumulated substances, and the upper opening area is set wide to facilitate cleaning.

Tap water is supplied to the deicing water tank 12 from a supply pipe 12e connected to an external water supply via a ball tap 12g having a float ball 12f, and a deicing water supply provided at the bottom 12h of the first water storage section 12c A first connecting pipe 21 having a first elbow pipe 20 is connected to the pipe 12i. A hot water supply pipe 22 provided at the bottom 12j of the second water storage section 12d.
A second connecting pipe 25 having a T-shaped pipe 23 and a second elbow pipe 24 is connected to the first connecting pipe 21 .
is connected to the inlet portion 23a of the T-shaped pipe 23, and the second connecting pipe 25 is connected to the deicing water pump 1.
It is connected to the inlet section 15a of No.5. Further, the outlet portion 15b of the deicing water pump 15 is connected to a deicing water sprinkling pipe 28 via a deicing water supply pipe 26 and a deicing water sprinkling header 27, and the deicing water is formed on the back surface of the down-flow ice making plate 2. The water flows down the deicing surface 2b.

The volume of the first water storage section 12c is set to be about three times the volume of the second water storage section 12d, and the line resistance of the first connection pipe 21 is sufficiently larger than the line resistance of the second connection pipe. Therefore, the flow of water to the deicing water pump 15 is controlled by the second water storage section 12d.
The deicing water from the first water storage section 12c flows extremely smoothly and quickly, whereas the deicing water from the first water storage section 12c flows more easily than the hot water from the second water storage section 12d. Connecting pipe 2
1, a second connecting pipe 25, a deicing water pump 15, a deicing water supply pipe 26, and a deicing water sprinkling pipe 28 constitute a deicing water circuit 10.

An overflow pipe 30 is attached to the deicing water tank 12, and is configured to drain overflow water in the deicing water tank 12 to the outside.Furthermore, as particularly shown in FIG. A communication part 32 having a concave opening is formed in the upper center part, and the deicing water in the first water storage part 12c and the hot water in the second water storage part 12d communicate with each other, and the water level is set at the communication part 32. At a higher level, communication is possible, and conversely, at a lower level, communication is disabled.

In the above configuration, a case will be described in which the deicing device of the down-flow ice maker according to the present invention is operated.

In the ice-making cycle, ice-making water is uniformly sprinkled from the ice-making water tank 4 via the ice-making water pump 5 onto the falling ice-making plate 2 from the water sprinkling holes (not shown) of the ice-making water sprinkling pipe 6. The compressor starts operating and refrigerant is supplied to the refrigerant flow path 2c,
Each ice-making plate is cooled and ice is made. The ice-making water remaining during the ice-making cycle is collected in the water collection gutter 3, passes through the filter 4b on the ice-making water tank 4, and then flows into the ice-making water tank 4.
Go back inside. Therefore, in the ice-making cycle, ice-making water is refluxed.

When a certain amount of ice is made on each ice making surface 2d of the falling ice making plate 2, ice making is completed and a deicing cycle begins.

In the de-icing cycle, the de-icing water in the de-icing water tank 12 is uniformly sprinkled onto each de-icing surface 2b from the de-icing water sprinkling pipe 28 via the de-icing water supply pipe 26 and the de-icing water sprinkling header 27 by the de-icing water pump 15. be done. While flowing down the ice removal surface 2b, the water exchanges heat with the falling ice making plate 2, is collected in the water collection gutter 3, and is stored in the ice making tank 4 as ice making water for the next ice making cycle. Further, as the deicing progresses and the water level becomes higher than the overflow pipe 4c in the ice-making water tank 4, the water returns from the overflow pipe 4c to the deicing water tank 12 and circulates. Furthermore, after deicing for a certain period of time, the next ice making cycle begins.

In the deicing cycle, the deicing water tank 12
The amount of water inside is 12 f float balls with a 12 g ball tap.
A certain amount of water is stored in the second water storage part 12d, and the amount of hot water necessary to actually peel off the ice that has frozen on the ice making surface 2d of the falling ice making plate 2 is obtained in the second water storage part 12d. As shown in FIG.
The temperature is raised to a predetermined temperature using hot gas. If the temperature of the hot water in the second water storage section 12d becomes too high, the upper part of the ice on each ice-making surface 2d will melt excessively at the beginning of deicing, and the hot water will exchange heat with the falling ice-making plate 2. The de-icing water collected in the water collection gutter 3 does not reach a temperature close to freezing and is stored in the ice-making water tank 4, resulting in a reduction in the time needed to cool the ice-making water at the beginning of the next ice-making cycle. Since the thermal loss becomes large, a communication portion 32 of a desired shape is formed in the weir portion 12b so that the temperature of hot water can be kept at about 40° C. to 50° C. For example, when the outside temperature and the water supply temperature are high, such as in the summer, the second
Even in a state where the water temperature of the water storage section 12d increases,
The opening shape of the communication part 32 is set so that heat is exchanged with the water in the first water storage part 12c through the communication part 32, and the temperature of the hot water does not rise above a predetermined temperature during the ice-making cycle.

Furthermore, to explain the flow of deicing water in the deicing water tank 12, at the end of the ice making cycle, hot water of 40 to 50°C is stored in the second water storage section 12d, and as shown in FIG. Since the pipe resistance of the connecting pipe 25 is configured to be smaller than the pipe resistance of the first connecting pipe 21, the hot water in the second water storage portion 12d flows first to the deicing surface 2b of the falling ice making plate 2. In other words, at the beginning of the deicing cycle, warm water flows first;
The water is heated to a temperature close to that of ice, and is stored in the ice-making water tank 4. The hot water in the second water storage section 12d is substantially consumed until the deicing is completed, and then,
The water in the second water storage section 12c is sprinkled onto the deicing surface 2b and stored in the ice making water tank 4, and is also returned to the deicing water tank 12 through the overflow pipe 4c.

Therefore, in the deicing cycle, at the beginning of deicing,
After the heated deicing water exchanges heat with the flowing-down ice making plate 2 and the deicing water close to freezing temperature is stored in the ice making water tank 4, the deicing water at the tap water temperature in the second water storage section 12c is circulated. The temperature of the ice-making water in the water tank 4 is kept low, and in the next ice-making cycle, the ice-making water pre-cooling time for lowering the ice-making water temperature to ice temperature is shortened, and the ice-making and de-icing times are shortened. It increases the ability.

g. Effect of the invention According to the invention, the water in the second water storage part only communicates with the relatively warm surface water in the first water storage part, and since the second water storage part is relatively shallow, the water It is relatively easy to heat the water in the deep part of the first water storage part, and the water in the deep part of the first water storage part is not heated, so that the efficiency of the ice making machine can be increased. In addition, the opening area of the second water storage part is widened and its depth is made shallow, which not only makes it easy to install the high-pressure side pipe, but also allows it to be installed horizontally in a U-shape, which reduces the amount of water generated by the compressor. It is also less affected by vibrations. Furthermore, since the second water storage part has a large opening area and is shallow, cleaning thereof is extremely easy.

[Brief explanation of the drawing]

Figures 1 to 3 are for showing a deicing device for a down-flow ice maker according to the present invention.
3 is a partially cutaway perspective view showing the deicing water tank of FIG. 1, and FIG. 4 is an overall configuration diagram showing a conventional configuration. 1... Ice-making water circuit, 2... Down-flow ice-making plate, 2a
...Ice making water sprinkling header, 2b...Deicing surface, 2c...
...Refrigerant flow path, 2d...Ice making surface, 3...Water collection gutter, 4
...Ice making water tank, 5...Ice making water pump, 10...
...Deicing water circuit, 12...Deicing water tank, 12b...
... Weir part, 12c... First water storage part, 12d... Second water storage part, 16... High pressure side pipe line, 21... First connection pipe, 25... Second connection pipe.

Claims (1)

[Scope of utility model registration request] A de-icing water tank for storing surplus water of an ice-making water tank, comprising a first water storage part and a second water storage part separated from the first water storage part by a weir, the second water storage part
In a de-icing device for a down-flow ice maker having a de-icing water tank in which a high-pressure side pipe line of a compressor is arranged in a water storage part, a communication part having a concave opening is provided at the upper center of the weir part, and the above-mentioned The second water storage part is made shallower than the first water storage part, the ratio of the opening area to the volume thereof is increased, and the high pressure side pipe is formed into a U-shape and is disposed horizontally. De-icing device for type ice makers.