JP2000205716A - Ice machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the size of a refrigerator by using unfrozen water for cooling a condenser. SOLUTION: An ice machine SIM is provided with an ice making section 1 which is cooled by means of a cooler 21 for making ice, a drain receiver 14 which receives the unfrozen water of the section 1, and an ice making unit 2 which houses the section 1 and receiver 14. The machine SIM is also provided with a compressor 4 and a condenser 3 which constitute a refrigerating cycle together with the cooler 21 and a machine room unit 5 which houses the compressor 4 and condenser 3. In addition to the above, the machine SIM is also provided with a cooling water receiver 26 provided below the condenser 3, a leading-out pipe 15 which is installed to the drain receiver 14 and leads the unfrozen water to the cooling water receiver 26, and a pump which supplies the water stored in the cooling water receiver 14 to a sprinkler 25 provided above the condenser 3. The condenser 3 is formed by closely adhering a refrigerant pipe to one side face of a heat exchanging plate.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ice making machine for producing ice.

[0002]

2. Description of the Related Art As a prior art prior to the present invention, for example, Japanese Unexamined Patent Publication No. 7-167539 (F25C1 / 0) has been proposed.
4) discloses an inverted cell type ice making machine.
-269168 (F25C 1/14) discloses an auger ice maker.

[0003] The inverted cell type ice making machine has an ice making process of making ice by fountain into a large number of ice making compartments having an open bottom surface, and an ice removing process of making ice produced in the ice making compartments flow hot gas through a cooler to release the ice. This is done repeatedly.

[0004] Then, in this ice-removing step, un-ice-free water that has not been iced is drained.

In the auger type ice making machine, an auger is inserted in a cooling cylinder, and the ice generated in the cooling cylinder is scraped by the auger to make ice.

[0006] This auger-type ice maker also performs periodic drainage at predetermined time intervals.

[0007]

In the prior art as described above, in the case of an inverted cell type ice maker or an auger type ice maker, uniced water is only drained, and water is wasted. Had become.

Further, the ice making capacity of an ice making machine is easily affected by the outside air temperature, and there has been a demand for an ice making machine capable of exhibiting a desired ice making ability even when the outside air temperature becomes high.

The present invention has been made in view of the above-mentioned problems, and provides an ice making machine for improving the condensing capacity by using unfreezed water for cooling the condenser.

[0010]

According to a first aspect of the present invention, there is provided an ice-making section which is cooled by a cooler and performs ice-making, and receives uniced water from the ice-making section. An ice maker including a drain receiver, an ice making unit for storing the ice making unit and the drain receiver, a compressor and a condenser forming a refrigeration cycle together with the cooler, and a machine room unit for storing the compressor and the condenser. A cooling water receiver provided below the condenser, an outlet pipe provided in the drainage receiver for guiding uniced water to the cooling water receiver, and water condensed in the cooling water receiver, A pump for supplying water to a sprinkler provided above the vessel, wherein the condenser is provided with a pipe in close contact with one side of a heat exchange plate to provide an ice making machine.

According to a second aspect of the present invention, there is provided the ice making machine according to the first aspect, wherein a water spray nozzle for diffusing water is provided in the water sprayer.

As described above, the uniced water (low temperature close to about 0 ° C.) discharged into the drain receiver is introduced into the cooling water receiver, and the uniced water introduced into the cooling water receiver is sprinkled from the water sprayer to the condenser. I do.

At this time, by using the water spray nozzle, water can be evenly sprayed on the condenser.

According to a third aspect of the present invention, there is provided a temperature sensor for detecting an outside air temperature, and when the temperature sensor is lower than a predetermined temperature, watering from the water sprayer is stopped. Provide ice machines.

As described above, when the outside air temperature is a low outside temperature equal to or lower than the predetermined temperature, watering from the water sprayer is stopped.

[0016]

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

FIG. 1 is a partially cutaway front view of a stack-on type ice maker, FIG. 2 is a partially cutaway front view of a remote condenser type ice maker, and FIG. 3 is a side view showing an embodiment of a condensation unit. 4 is a side view showing another embodiment of the condensing unit, FIG. 5 is a side view showing another embodiment of the condensing unit, FIG. 6 is a perspective view showing one embodiment of the condenser,
7 is a cross-sectional view from the side in the direction A of FIG. 6, that is, the condenser installed state, FIG. 8 is a perspective view showing another embodiment of the condenser, and FIG. 9 is the direction B in FIG. 10 is a perspective view showing another embodiment of the condenser, FIG. 11 is a sectional view from the side in the direction C of FIG. 10, that is, the condenser is installed, and FIG. Container side view,
13 is a plan view of the condenser, FIG. 14 is a DD plane view of FIG. 13, FIG. 15 is a side view of the condenser showing an embodiment different from FIG. 12, and FIG. 16 is an embodiment different from FIG. FIG. 17 is a sectional view taken along line EE of FIG. 16.

SIM in FIG. 1 indicates an inverted cell type ice making machine, which is constituted by stacking units called a stack-on type. The inverted cell type ice making machine alternately repeats the ice making process and the ice removing process of removing ice generated in the ice making process.

This stack-on type ice making machine SIM
As shown in FIG. 1, an ice making unit 2 provided with an ice making unit 1, a condenser 3 provided at a lower stage of the ice making unit 2 and constituting a refrigeration cycle together with the ice making unit 1, a compressor (hereinafter, referred to as a compressor) ), A middle ice storage unit 6 provided below the machine room unit 5, and a lower ice storage unit 7 provided below the middle ice storage unit 6.

The lowermost ice storage unit 7 at the bottom is
The front opening is closed by a heat-insulating door 8 that can be opened and closed, and is rotatable forward around the lower side.
A handle 9 is provided on the upper side.

The outer box 10 of the lower ice storage unit 7 is made of stainless steel, and an inner box (not shown) made of a material having low thermal conductivity such as vinyl chloride is provided on the inner side. Is provided via Then, the ice made by the ice making unit 1 is stored in the inner box.

Further, on the bottom surface of the lower ice storage unit 7, pedestals 11 are attached at four corners.

Next, the middle ice storage unit 6 is formed in a frame shape. An outer frame 12 made of stainless steel is provided in the outer frame 12 with a heat insulating material interposed therebetween. And an inner frame (not shown) formed of a low material.

An opening is formed in the front surface of the middle ice storage unit 6, and a sliding transparent door 13 is provided.

As described above, the middle ice storage unit 6
On top of this, a machine room unit 5 is provided, and a condensing unit 24 including the condenser 3 and a compressor 4 are provided as described above. A cooling water sprinkler 25 is provided above the condenser 3, and a cooling water receiver 26 for receiving water from the cooling water sprinkler 25 is provided below the condenser 3. Further, a blower (hereinafter, referred to as a condenser fan) for cooling the condenser 3 is provided on the upper left of the condenser 3.
30 are provided. Reference numeral 16 denotes a water level detecting device for detecting the water level of the cooling water receiver 26, and 23 denotes a water level detecting device for the cooling water receiver
6 is an external water supply system for supplying water.

Further, an ice making unit 2 is provided on the machine room unit 5. The ice making unit 2 is provided with the ice making unit 1 as described above, and below the ice making unit 1 is provided a drainage receiver 14 for receiving uniced water drained from the ice making unit 1 during the ice removing step. ing. The drainage pipe 14 is provided with an outlet pipe 15, which faces the cooling water receiver 26 of the machine room unit 5.

Here, the ice making section 1 shown in FIG. 1 is called an inverted cell type ice making machine, and has an ice tray 17 forming a large number of ice making compartments opened on the lower surface, and the lower opening of the ice tray 17 can be tilted and moved back and forth. A water tank 18 that is closed below the water tray 18, a water tank 19 that is provided below the water tray 18 and stores ice making water, and the ice making water of the water tank 19 is transferred from the water tray 18 to the ice making chamber of the ice tray 17. An ice making pump 20 is provided below the water tank 19 for fountain.

Further, a cooler 21 for cooling the ice tray 17 is provided on the upper surface of the ice tray 17, and the ice tray 17 and the cooler 21 are formed by applying tin plating to a copper material. Things. Incidentally, reference numeral 22 denotes an expansion valve. Further, although not shown, the ice making unit 2 includes the water tray 18.
A water supply sprinkler for sprinkling water thereon, an ice making water to be supplied to the water supply sprinkler, and a water storage tank receiving water from an external water supply system are provided.

The condensing unit 24 provided in the machine room unit 5 has a form shown in FIGS.

First, in the condenser unit 24 shown in FIG. 3, a plurality of (three in this embodiment) refrigerant pipes 28 are arranged in a meandering manner on the lower surface of the heat exchange plate 27 and are inclined. 3, a cooling water receiver 26, a condenser fan 30, and a cooling water sprinkler 25.

The cooling water receiver 26 has a cooling water receiver 2.
6 is provided with a cooling water supply pipe 31 and a cooling water supply pump 32 for supplying water to the cooling water sprinkler 25, and the cooling water sprinkler 25 has a water spray nozzle opposed to each of the heat exchange plates 27. 33 are provided respectively. The sprinkling nozzle 33 is for letting water flow down. As shown in FIGS. 6 and 7, the condenser 3 is formed by welding a refrigerant pipe 28 having an elliptical cross section to the lower surface of a flat heat exchange plate 27 with a solder 34 having good heat conductivity. is there.

Accordingly, the cooling water from the cooling water sprinkler 25 flows down on the surface of the heat exchange plate 27.

In the case of the condensing unit 24 shown in FIG. 4, the water from the water spray nozzle 33 is diffused, and the water is evenly distributed to the heat exchange plate 27.

Here, the watering nozzle 33 has a water pressure of 3
(Kg / cm ² ) 7.8 to 11.8 (l / min)
And a spray angle of 65 ° is desirable.

Further, in the case of the condensing unit 24 shown in FIG. 5, the condenser 3 itself is immersed in the water stored in the cooling water receiver 26. As shown in FIGS. 8 and 9, the condenser 3 is provided with the refrigerant pipe 28 on the back side of the heat exchange plate 27 bent in a mountain shape, and a gap between the heat exchange plate 27 and the refrigerant pipe 28 is provided with good heat conductivity. Is welded with solder 34 or the like.

In addition, as shown in FIGS. 10 and 11, the condenser 3 in which the heat exchange plate 27 is formed in a wave shape and the refrigerant pipe 28 is arranged in a meandering manner may be used.

The condenser 3 having the heat exchange plate 27 bent in a mountain shape shown in FIGS. 8 and 9 and the condenser 3 having the heat exchange plate 27 formed in a wavy shape shown in FIGS. FIG.
4 may be used in the embodiment of FIG. In this case, the longitudinal direction of the mountain or the longitudinal direction of the wave extends in the left-right direction.

That is, a part of the cooling water is
After flowing over the mountain or the wave, the cooling water flows down, and the other cooling water flows down in the left and right direction.

FIGS. 12 to 14 show an embodiment in which a large number of drain holes 35 are formed in the heat exchange plate 27 in the form of a flat plate.
A is formed to prevent the flowing cooling water from flowing in the left-right side direction. Thus, the flanges 27 are provided at the left and right ends.
By forming A, the cooling water can flow down the heat exchange surface of the heat exchange plate 27 without waste and the heat exchange efficiency can be improved.

Further, since the cooling water flowing down the upper surface of the heat exchange plate 27 can be introduced to the back surface of the heat exchange plate 27 by forming the water drain hole 35, the cooling water can be directly supplied to the refrigerant pipe 2.
8 can be contacted. Therefore, the heat exchange efficiency can be further improved.

Next, in FIGS. 15 to 17, a large number of drain holes 35 are formed in the flat heat exchange plate 27, and the left and right ends are bent downward to form a flange 27B. In this structure, the cooling water flowing down the upper surface of the heat exchange plate 27 is supplied to the drain hole 35.
From the heat exchange plate 27 and is brought into direct contact with the refrigerant pipe 28 to exchange heat. At this time, the refrigerant pipe 28 is guided in the left-right direction because of the repeated meandering extending in the left-right direction, but is guided downward by the flange 27B.

As described above, the flange 27B can prevent the heat exchange plate 27 from scattering in the left-right direction.

The ice making machine SIM shown in FIG. 2 shows an embodiment in which the machine room unit 5 is installed in a place different from the place where the ice making unit 2 and the ice storage units 6 and 7 are installed, such as outdoors.

In this case, a wind direction plate 36 is provided between the condenser fan 30 and the cooling water sprinkler 25.

For other configurations, see FIG.
This is the same configuration as the embodiment.

Further, in this embodiment, the inverted cell type ice maker has been described. However, the form of the ice maker may be an auger type ice maker, a falling ice maker, a plate type ice maker, or the like.

However, in the case of an auger type ice making machine, the uniced water is drained to the drain receiver 14 by regular drainage, that is, regular drainage.

Further, the surface of the heat exchange plate 27 may be formed to be rough or a hydrophilic paint may be applied so that water can be easily spread.

Further, in the present embodiment, the present invention has been described by using the form used for the stack-on type. However, the present invention is not limited to the stack-on type, but is applied to an integrated ice making machine. It may be used.

[0050]

As described in detail above, according to the present invention,
For example, uncondensed water drained in a de-icing step or periodic drainage is used as cooling water for cooling the condenser, so that sufficient condensation capacity can be obtained even at a high outside air temperature.

Further, by using the water spray nozzle, water can be evenly sprayed on the condenser, and the heat exchange efficiency of the condenser can be improved.

Further, at the time of low outside temperature, the cooling water is adjusted so as not to be used, so that it is possible to prevent overcooling and to obtain a desired condensing ability regardless of the outside temperature.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of a stack-on type ice maker.

FIG. 2 is a partially cutaway front view of the remote condenser type ice maker.

FIG. 3 is a side view showing one embodiment of a condensing unit.

FIG. 4 is a side view showing another embodiment of the condensing unit.

FIG. 5 is a side view showing another embodiment of the condensing unit.

FIG. 6 is a perspective view showing one embodiment of a condenser.

FIG. 7 is a cross-sectional view from the direction A in FIG. 6;

FIG. 8 is a perspective view showing another embodiment of the condenser.

FIG. 9 is a cross-sectional view from the direction B in FIG. 8;

FIG. 10 is a perspective view showing another embodiment of the condenser.

11 is a cross-sectional view from the direction C in FIG.

FIG. 12 is a side view of the condenser.

FIG. 13 is a plan view of the condenser.

FIG. 14 is a sectional view taken along line DD of FIG. 13;

FIG. 15 is a side view of the condenser showing an embodiment different from that of FIG. 12;

FIG. 16 is a plan view of a condenser showing an embodiment different from that of FIG. 13;

FIG. 17 is a sectional view taken along line EE of FIG. 16;

[Explanation of symbols]

 SIM Reverse cell type ice making machine 1 Ice making unit 2 Ice making unit 3 Condenser 4 Compressor (compressor) 14 Drainage receiver 15 Outlet pipe 21 Cooler 26 Cooling water receiver 27 Heat exchange plate 28 Refrigerant pipe 32 Cooling water supply pump 33 Sprinkling nozzle

Claims (3)

[Claims] 1. An ice making section cooled by a cooler to make ice, a drainage receiving uniced water in the ice making section, an ice making unit accommodating the ice making section and the drainage receiving, and a freezer together with the cooler. An ice making machine comprising a compressor and a condenser constituting a cycle, and a machine room unit accommodating the compressor and the condenser, wherein the cooling water receiver provided below the condenser and the drain receiver are provided. An outlet pipe for guiding uncondensed water to the cooling water receiver,
A pump for supplying water stored in the cooling water receiver to a sprinkler provided above the condenser, wherein the condenser is formed by closely attaching a pipe to one side surface of a heat exchange plate. A unique ice machine. 2. The ice making machine according to claim 1, wherein a water spray nozzle for diffusing water is provided in the water spray device. A temperature sensor for detecting an outside air temperature;
3. The ice making machine according to claim 1, wherein when the temperature sensor is lower than a predetermined temperature, watering from the water sprayer is stopped.