JP2009180439A - Coolant feeding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To resolve problems in a coolant feeding device using a conventional plate type heat exchanger easily damaged by freezing. <P>SOLUTION: The coolant feeding device cools supply water supplied from the outside, and delivers a cooling water of 3°C or lower. The device is provided with a tubular object 10 inserted with a coil like cooler 12 spirally wound with a cooling pipe supplied with a coolant of a temperature lower than a coolant temperature from a refrigeration system 22, a supply pipe 14 inserted into an internal space 12a formed along a center axis of the coil like cooler 12 from one end side to the other end side with an outlet delivering supply water protruding from the other end side, and a plurality of baffle fins 15 inserted at predetermined gaps perpendicularly with respect to the central axis of the coil-like cooler 12 and having a cutout so that the supply water delivered from an outlet of the supply piping 14 flows in zigzag in the tubular object 10 toward a cooling water outlet 38. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a coolant supply apparatus, and more particularly to a coolant supply apparatus that cools a supply liquid supplied from the outside and discharges a coolant at 3 ° C. or lower.

In recent years, in the food field and the like, low temperature water of 3 ° C. or less has been increasingly used for aging of sake.
Conventionally, low-temperature water has been supplied by supplying room-temperature water to a plate heat exchanger and cooling it to a predetermined temperature.
However, if low temperature water of 3 ° C or less is to be obtained by a plate heat exchanger, it is necessary to supply a refrigerant having a temperature lower than 0 ° C, which is the freezing point of water, to the plate heat exchanger. In some cases, water partially froze in the chamber, destroying the plate heat exchanger. For this reason, in order to supply 0 degreeC cold water continuously using a plate type heat exchanger, the cold / hot water cooler shown in FIG. 7 is proposed by the following patent document 1, for example.
JP-A-10-111062

In the cold / hot water cooler shown in FIG. 7, the refrigerant is supplied from the refrigerator 102 to the plate heat exchanger 100 via the liquid dryer strainer 104, the electromagnetic valve 105, and the throttle mechanism 106, and passes through the plate heat exchanger 100. The refrigerant passes through the refrigerant gas strainer 108 and is returned to the refrigerator 102.
In this way, in the plate heat exchanger 100 to which the refrigerant is supplied, the supply water is a cold water circulation pump 110, a water strainer 112, a detector 114 using a flow sensor, a temperature sensor 116 for cold water, and a freeze / thaw means. The cold water supplied via the electric heater 118 and cooled by the plate heat exchanger 100 is returned via the pipe 120.

In the cold / hot water chiller shown in FIG. 7, when the cold water partially freezes in the plate heat exchanger 100, the amount of water supplied to the plate heat exchanger 100 decreases and is detected by the detector 114 using a flow sensor. Is done. When a decrease in the flow rate is detected by the detector 114, the supply water to the plate heat exchanger 100 is heated by the electric heater 118 as a freeze / thaw means, and a partially frozen portion in the plate heat exchanger 100 is heated. It can melt | dissolve and it can prevent that a plate-type heat exchanger is destroyed, and can supply 0 degreeC cooling water continuously.
However, in the cold / hot water cooler shown in FIG. 7, it is necessary to provide the detector 114 using the flow sensor, the electric heater 118 as the freeze / thaw means, etc. in the supply water supply pipe, and the structure of the cold / warm water cooler is complicated. And increase in size.
Further, depending on the sensitivity and response speed of the detector 114 using the flow sensor and the electric heater 118 as a freeze / thaw means, partial freezing in the plate heat exchanger 100 proceeds and plate heat exchange is performed. There is a risk of destroying the vessel 100.
Therefore, the present invention solves the problem of the coolant supply apparatus using the conventional plate heat exchanger that is easily broken by freezing, and heat exchange that does not cause damage even if some cooling water freezes. It is an object of the present invention to provide a coolant supply device that can be downsized with a simple structure using a vessel.

As a result of studying the above problems, the present inventors have found that a cooling liquid supply device using a coiled cooler in which a cooling pipe is spirally wound has a slight amount on the outer peripheral surface of the cooling pipe of the coiled cooler. Even if the cooling water is frozen, there is no risk of breakage, and by providing a supply pipe for supplying the supply liquid in the internal space formed along the central axis of the coil cooler, the coil cooler Even when the cooling liquid was frozen on the outer peripheral surface of the cooling pipe to form a frozen block, the inventors learned that the supply liquid flows in the vicinity of the peripheral surface of the supply pipe without freezing, and reached the present invention.
That is, the present invention is a cooling liquid supply apparatus that cools a supply liquid supplied from the outside and discharges a cooling liquid of 3 ° C. or lower, and a refrigerant having a temperature lower than the cooling liquid temperature is supplied from the refrigerating apparatus. A cylindrical body in which a coiled cooler in which a cooling tube is spirally wound is inserted, and an internal space formed along the central axis of the coiled cooler, from one end side to the other end Inserted at a predetermined gap perpendicular to the central axis of the coiled cooler, and an outlet portion for discharging the supply liquid is inserted from the other end side. Cooling characterized in that it is provided with a plurality of baffle fins formed with notches so that the supply liquid discharged from the outlet flows in a zigzag manner in the cylindrical body toward the cooling water outlet portion. It is in the liquid supply device.

In the present invention, the coil cooler is inserted in a sealed state in the cylindrical body, and when the supply of the supply liquid into the cylindrical body is started, the air in the cylindrical body can be extracted. In addition, by providing an air vent pipe in which the air inlet portion is located in the vicinity of the ceiling portion of the cylindrical body and the air outlet portion is located in the cooling water outlet portion, the cylindrical body can be sealed even if the cylindrical body is sealed. Cooling can be performed in a full state by the supply liquid, and cooling efficiency can be improved.
In this way, the cooling liquid can be obtained also by connecting the water pipe directly to the supply pipe by sealing the cylindrical body.
Further, as the refrigeration apparatus, a refrigeration apparatus that supplies a refrigerant having a temperature lower than the freezing point of the supply liquid to the coiled cooler so as to cool the supply liquid near the freezing point of the cooling pipe of the coiled cooler. Provided with an ice sensor that stops the operation of the refrigeration apparatus when a freezing block of the supply liquid formed on the outer peripheral surface side grows to a predetermined size, and each of a plurality of baffle fins through which supply pipes are inserted Is formed in the coiled cooler by forming a notch into which the supply pipe is inserted so that the supply liquid flows in a zigzag shape in the direction of the cooling water outlet in the internal space surrounded by the freezing block. Even if the block is formed, the cooling liquid can be continuously supplied, and even if the frozen block grows to a predetermined size and the refrigeration unit stops, the refrigeration block formed in the cylinder shape It can be cooled liquid supply to obtain a cooling liquid.
Further, by providing a supply pump for supplying the supply liquid to the supply pipe, it is possible to stably supply a certain amount of the supply liquid into the cylindrical body.
In addition, water can be used suitably as a supply liquid.

Since the cooling liquid supply apparatus according to the present invention employs a coiled cooler in which the cooling pipe is spirally wound, some cooling water is frozen on the outer peripheral surface of the cooling pipe of the coiled cooler. There is no risk of damage.
Further, the supply liquid discharged from the outlet of the supply pipe is passed through the cylindrical body by a plurality of baffle fins formed with notches formed at right angles to the central axis of the coiled cooler. It flows in a zigzag shape toward the cooling water outlet and can sufficiently exchange heat with the coiled cooler.
Moreover, a supply liquid having a temperature higher than that of the cooling liquid is supplied to the supply pipe inserted into the internal space of the coiled cooler, and the cooling water is frozen on the outer peripheral surface of the cooling pipe of the coiled cooler. Even if this occurs, the supply liquid can flow in the internal space, and the cooling liquid can be obtained continuously.
As a result, it is possible to provide a coolant supply device that has a simple structure and can be miniaturized using a coiled cooler that is not likely to be damaged even if some coolant is frozen.

A schematic view of an example of a coolant supply apparatus according to the present invention is shown in FIG. The cooling liquid supply apparatus shown in FIG. 1 is a cooling water supply apparatus using water as a cooling liquid, and in a stainless steel cylindrical body 10, a stainless steel cooling pipe is wound in a coil shape. A cooler 12 is inserted and sealed. A stainless steel supply pipe 14 is inserted into the internal space 12a formed along the central axis of the coiled cooler 12 from the lower end side to the upper end side. A predetermined amount of water is supplied to the lower end portion of the supply pipe 14 by a supply pump 16 that is manually turned on and off, and a temperature sensor 20 is provided in the pipe 18 to the supply pump 16.
A priming port 40 for feeding priming water is also connected to the lower end of the supply pipe 14 when the cylindrical body 10 is empty.
Further, a plurality of stainless steel baffle fins 15, 15... Are inserted into the cylindrical body 10 at a predetermined gap perpendicular to the central axis of the coil cooler 12. The baffle fin 15 has a notch portion so that the supply liquid discharged from the outlet of the supply pipe 14 flows in a zigzag shape toward the cooling water outlet portion 38 provided on the lower end side of the cylindrical body 10. Is formed.

In addition, the refrigerant is supplied to the coiled cooler 12 from the refrigeration apparatus 22. In the refrigeration apparatus 22, the refrigerant compressed by the compressor 23 is condensed by the cooling air blown by the fan 26 in the condenser 24, and then adiabatically expanded by the expansion valve 30 after passing through the refrigerant dryer 28. It is cooled and supplied to the coiled cooler 12. The refrigerant that has passed through the coiled cooler 12 passes through the accumulator 32 and is supplied to the compressor 23 again.
In the cooling water supply device shown in FIG. 1, an ice sensor 34 is provided for detecting that a frozen block formed in the coiled cooler 12 has a predetermined size.
Signals from the ice sensor 34 and the temperature sensor 20 are transmitted to the control unit 36. When receiving a freeze block detection signal from the ice sensor 34, the control unit 36 issues a stop signal for stopping the compressor 23. Further, based on the signal from the temperature sensor 20, the control unit 36 issues a signal for changing the rotational speed of the fan 26.

As shown in FIG. 2A, the cylindrical body 10 shown in FIG. 1 is in a sealed state with an upper lid 44 and a lower lid 46 attached thereto. Since the upper lid 44 and the lower lid 46 are screwed to the cylindrical body 10 by screws, they can be easily removed for internal cleaning or the like.
In this way, when water is supplied from the supply pipe 14 into the sealed cylindrical body 10, an air inlet portion is provided near the ceiling of the cylindrical body 10 so that the air in the cylindrical body 10 can be extracted. An air vent pipe 42 is provided. An air outlet portion 42 a of the air vent pipe 42 is located in the cooling water outlet portion 38. For this reason, air is attracted | sucked by the ejector effect of the cooling water discharged from the cooling water exit part 38, and the air in the cylindrical body 10 can be exhausted rapidly.
The ice sensor 34 is attached to the upper lid 44 and is located between the cooling pipe of the coiled cooler 12 and the supply pipe 14. As will be described later, the ice sensor 34 is mounted at a position where the frozen block formed in an annular shape on the cooling pipe of the coiled cooler 12 has a predetermined size, for example, when the frozen block grows further, the coiled cooler 12 It is preferable to set it as the location where the flow of water in the internal space portion 12a is hindered.
The ice sensor 43 measures the resistance value of the substance between the pins 34a and 34b protruding from the tip portion. This measurement data is transmitted to the control unit 36. Based on the resistance value, it is determined whether it is air, water, or ice. If the resistance value is ice, a signal for stopping the compressor 23 is transmitted from the control unit 36. .
Further, when the measured value at the ice sensor 43 is air, a signal for turning on the warning lamp may be transmitted from the control unit 36 to indicate that the air in the cylindrical body 10 is not sufficiently exhausted. .
In addition, the lower cover 46 of the cylindrical body 10 shown to Fig.2 (a) is provided with the extraction port 48 which extracts the water in the cylindrical body 10, and the sealing plug is normally mounted | worn with it.

In the cylindrical body 10, a plurality of baffle fins 15, 15,... Are provided at a predetermined gap perpendicular to the central axis of the coil cooler 12. Each of the baffle fins 15, 15... Has a supply pipe 14 inserted through the center thereof as shown in FIG.
The baffle fin 15 is a plate-shaped body made of stainless steel, and has a larger diameter than the outer peripheral diameter of the coiled cooler 12 as shown in FIG.
Further, as shown in FIG. 3A, the baffle fin 15 is formed with a long notch 15a that reaches the center thereof. For this reason, the baffle fin 15 shown in FIG. 3A has a coiled cooler in a state where the coiled cooler 12 is erected on the lower lid 46 and the supply pipe 14 is provided in the inner space portion 12a. 12 is inserted between the cooling pipes from the outside. At that time, the baffle fins 15 are inserted so that the supply pipe 14 is located in the innermost part of the notch 15a.
Moreover, it is preferable to insert each of the plurality of baffle fins 15, 15... So that the cutout portions 15 a differ by 180 ° as shown in FIG.
In addition, the baffle fin 15 shown to Fig.3 (a) is also formed with the notch part 15b by which the air vent piping 42 is penetrated.

When water is supplied from the supply pipe 14 of the cylindrical body 10 shown in FIG. 2, the water discharged from the tip of the supply pipe 14 flows mainly from the notch 15a of the baffle fin 15 to the lower space. Each of the plurality of baffle fins 15, 15... Is inserted such that the notch 15 a is different by 180 °, so that the water discharged from the front end of the supply pipe 14 is piped as shown in FIG. It flows in a zigzag shape in the body 10. For this reason, water is sufficiently heat-exchanged with the refrigerant flowing through the cooling pipe of the coiled cooler 12, cooled to 3 ° C. or less, discharged from the cooling water outlet 38, and supplied to the user.
Thus, when water is cooled to 3 ° C. or lower, since the refrigerant supplied to the cooling pipe of the coiled cooler 12 is 0 ° C. or lower, the water around the cooling pipe freezes, and FIG. As shown in FIG. 3, the frozen block 50 is formed in an annular shape in the coiled cooler 12. The freezing block 50 is formed along the cooling pipe of the coiled cooler 12, and the space through which water can flow is only the internal space 12 a of the coiled cooler 12. Supply water from the outside that is hotter than the cooling water flows through the supply pipe 14 that is inserted into the internal space portion 12 a, and is harder to freeze than in the vicinity of the cooling pipe of the coiled cooler 12. it is conceivable that.

In this way, the water flowing in the internal space 12a of the coiled cooler 12 flows from the notch 15a in which the supply pipe 14 is inserted into the lower space. Further, since each of the baffle fins 15, 15,... Is inserted so that the cutout portion 15a differs by 180 °, the water flowing through the internal space portion 12a flows in a zigzag shape. During this time, the water supplied from the tip of the supply pipe 14 can be brought into contact with the freezing block 50 formed in an annular shape and become cooling water of 3 ° C. or lower.
Such a freezing block 50 grows with time, and the flow passage area through which the water in the internal space portion 12a flows is gradually narrowed, and a necessary amount of cooling water may be obtained from the cooling water outlet 38. In this case, the growth of the frozen block 50 is detected by the ice sensor 34, and the compressor 23 of the refrigeration apparatus 22 is stopped, thereby suppressing the growth of the frozen block 50 and reducing the flow area in the internal space portion 12a. It can be secured.
Even if the compressor 23 is stopped, since the frozen block 50 exists in the cylindrical body 10, water is continuously supplied from the supply pipe 14 to the cylindrical body 10, and the water is cooled by the freezing block 50 and cooled. You can get water.
When ice in the frozen block 50 can no longer be detected by the ice sensor 34, the compressor 23 is restarted and the refrigerant is supplied again to the coiled cooler 12.
By the way, in restaurants and the like, the amount of cooling water used varies with time. For this reason, by driving the refrigeration apparatus 22 within a time when the amount of cooling water used is small and forming the freezing block 50 in advance, during the time when the amount of cooling water used increases, By increasing the cooling power with the cooler 12, it is possible to cover the increasing amount of cooling water used.
As described above, by controlling the supply of the refrigerant according to the growth of the freezing block 50, it is possible to continuously supply the coolant at 3 ° C. or lower in an optimum state without waste.

In the cooling water supply apparatus shown in FIG. 1, water is supplied to the supply pipe 14 by the supply pump 16, but a water pipe may be connected instead of the supply pump 16. Water can be sufficiently supplied into the tubular body 10 even by the water pressure of the water pipe, and the supply pump 16 can be made unnecessary and compact.
For this reason, as shown in FIG. 6, the cylindrical body 10 can be installed sideways. In the cylindrical body 10 installed in the horizontal direction, the tip of the air vent pipe 42 is provided at a place where air can easily be collected.
In the cooling water supply apparatus shown in FIGS. 1 to 6, the tubular body 10 is installed indoors, and the refrigeration apparatus 22 is installed outdoors, whereby the part installed indoors can be made as small as possible.
Moreover, in the cooling water supply apparatus shown in FIGS. 1-6, although water was supplied in the cylindrical body 10 and cooling water was obtained, the liquid with which the frozen block 50 is hard to be formed, for example, liquor is used. Also good. In this case, the ice sensor 34 that detects the frozen block 50 may be removed.
Furthermore, like the cooling water supply apparatus shown in FIGS. 1 to 5, when the cylindrical body 10 is used in an upright state and the cooling water is not brought into direct contact with food or the like, the upper lid 44 is removed. It is good also as an open state. The ice sensor 34 attached to the upper lid 44 can detect the frozen block 50 by being attached to the lower lid 46.

It is the schematic for demonstrating an example of the cooling fluid supply apparatus which concerns on this invention. It is explanatory drawing for demonstrating the internal structure of the cylindrical body 10 shown in FIG. It is explanatory drawing explaining the baffle fin inserted in the cylindrical body 10 shown in FIG. It is explanatory drawing explaining the flow of the liquid in the cylindrical body 10 shown in FIG. It is explanatory drawing explaining the case where a freezing block is formed in the cylindrical body 10 shown in FIG. It is the schematic explaining the other example of the cooling fluid supply apparatus which concerns on this invention. It is the schematic explaining the conventional cooling fluid supply apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Cylindrical body 12 Coiled cooler 12a Internal space part 14 Supply piping 15 Baffle fin 15a Notch part 16 Supply pump 20 Temperature sensor 22 Refrigeration apparatus 23 Compressor 24 Condenser 26 Fan 30 Expansion valve 34 Ice sensor 36 Control part 38 Cooling Water outlet 42a Air outlet 42 Air vent pipe 43 Ice sensor 50 Freezing block

Claims (6)

A cooling liquid supply device that cools a supply liquid supplied from the outside and discharges a cooling liquid of 3 ° C. or less,
A cylindrical body in which a coiled cooler in which a cooling pipe supplied with a refrigerant having a temperature lower than the coolant temperature is spirally wound is inserted;
A supply pipe which is inserted from one end side to the other end side in an internal space formed along the central axis of the coiled cooler, and an outlet portion from which the supply liquid is discharged protrudes from the other end side; ,
Inserted at a predetermined gap perpendicular to the central axis of the coiled cooler so that the supply liquid discharged from the outlet of the supply pipe flows in a zigzag manner in the cylindrical body toward the cooling water outlet. A cooling liquid supply apparatus, comprising: a plurality of baffle fins each having a notch formed therein.   The coiled cooler is inserted in a sealed state in the cylindrical body, and the cylindrical shape is extracted so that the air in the cylindrical body can be extracted when supply of the supply liquid is started into the cylindrical body. The coolant supply device according to claim 1, wherein an air vent pipe having an air inlet portion located in the vicinity of a ceiling portion of the body and an air outlet portion located in the cooling water outlet portion is provided. The refrigeration apparatus is a refrigeration apparatus that supplies a refrigerant having a temperature lower than the freezing point of the supply liquid to the coiled cooler so that the supply liquid is cooled in the vicinity of the freezing point thereof.
An ice sensor is provided to stop the operation of the refrigeration apparatus when a frozen block of the supply liquid formed on the outer peripheral surface side of the cooling pipe of the coiled cooler grows to a predetermined size,
In addition, each of the plurality of baffle fins through which the supply pipe is inserted is inserted with the supply pipe so that the supply liquid flows in a zigzag manner in the direction of the cooling water outlet in the internal space surrounded by the freezing block. The coolant supply device according to claim 1, wherein a notch portion is formed.   The coolant supply apparatus according to any one of claims 1 to 3, wherein a supply pump for supplying the supply liquid to the supply pipe is provided.   The coolant supply apparatus according to any one of claims 2 and 3, wherein a water supply pipe is connected to the supply pipe.   The coolant supply apparatus according to claim 1, wherein the supply liquid is water.

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