JP2009275933A - Drinking water supply machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inexpensive drinking water supply machine capable of extracting cooled drinking water cooled to a proper temperature (5°C or lower) in a short time even immediately after the replacement of a drinking water bag. <P>SOLUTION: A table section 6 is integrally formed on a front side of a supply machine body 1, and a loading surface 1a at a top face side of the supply machine body 1 is formed at a prescribed inclination angle α so that a table 6 side and an extraction port 4 decline in loading a box-shaped case 3 receiving the drinking water bag including the prescribed amount of drinking water W in a flexible bag body 3a of polyethylene and vinyl bag and the like. A receiving section receiving a refrigerant circulating device for circulating a refrigerant such as chlorofluorocarbon while purifying it is integrally formed at a lower section of a cooling means, and a dome-shaped evaporator chamber of about 2 mm thickness formed of a metallic material of high heat conductivity, is air-tightly disposed on a base plate through a heat insulating material such as urethane foam. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a drinking water supply machine that can be conveniently used in general homes or offices, and more particularly, a cooling drinking water that can extract cooled drinking water cooled to an appropriate temperature even immediately after replacing a drinking water bag. This is related to the feeding machine.

  In recent years, commercially available mineral waters and tea have been drunk without drinking tap water directly for health or sanitation, etc., and in connection with this, they are also commercially available in companies and homes. Drinking water dispensers called drinking water dispensers, water servers and the like that can extract drinking water and the like are used.

  In addition, there are two types of drinking water: cooled drinking water and heated drinking water. There are many demands for cooling drinking water compared to warm drinking water. In contrast, the current situation is that cooled drinking water is in high demand throughout the year.

  The drinking water used in the drinking water supply machine is a large bottle type that uses a predetermined amount (for example, 10 liters to 30 liters) of drinking water in a large bottle and 10 liters in a flexible bag such as a plastic bag. There is a bagin box (BiB) type in which a drinking water bag enclosing a certain amount of drinking water is housed in a box-like case (such as a cardboard box).

  As a drinking water supply machine using the baggin box (BiB), a box-shaped case containing a flexible bag body containing drinking water is set in the storage part of the supply machine body, The flexible bag exposed from the opening that is open is pressed against and brought into contact with the frustoconical cooling part protruding from the back side of the housing part to directly cool the drinking water in the flexible bag. An apparatus configured to extract from the extraction valve of the main body of the feeder (see, for example, Patent Document 1 and Patent Document 2) and a plurality of baggage boxes are placed in the housing portion of the main body of the feeder and cooled to a predetermined temperature. In addition, a water server bag-in-box storage device (see, for example, Patent Document 3) that is used sequentially from a cooled baggin box is known.

  However, the lower side of the flexible bag body in which drinking water is sealed is brought into contact with the frustoconical cooling part projecting from the back side of the former accommodating part to directly cool the drinking water in the drinking water bag. In the case of the water server, the cooling efficiency of the drinking water in the bag is poor, and the flexible bag body is accommodated from the side surface side of the supply machine body with respect to the frustoconical cooling part protruded from the accommodation part of the supply machine body. A large amount of labor is required to insert a box-shaped case and press the lower side of the flexible bag body in which drinking water is sealed in the frustoconical cooling section. For women and women, bagging boxes (BiB) There is a problem that the replacement work is difficult.

  That is, in order to insert a box-shaped case containing a flexible bag body from the side surface side of the feeder main body and insert the flexible bag body into the protruding frustoconical cooling section, the volume of the cooling section There is a problem that it is necessary to push up a sufficient amount of water upward, and the bag of the flexible bag body of that portion cannot be freely deformed and requires a considerable force.

  In addition, the flexible bag body has an effect of repelling the frustoconical cooling section, and it is necessary to suppress the flexible bag body with a strong force from the front.

  In addition, since the flexible bag cannot be freely deformed, there is a problem that the area of contact with the frustoconical cooling portion is small and cooling is slow, and the cooling effect is lowered. Further, when the frustoconical cooling part is protruded from the back side of the housing part, there is a problem that the structure becomes complicated.

  Moreover, the drinking water supply machine using the conventional baggin box (BiB) is cold for a certain time (for example, 10 to 15 minutes) when the drinking water enclosed in the drinking water bag is cooled when the baggin box is replaced. If you cannot extract and drink drinking water, and you want to drink drinking water that has been cooled immediately, you will need a refrigerator or cooling equipment to pre-cool the bagin box in advance. It was. However, in order to equip the drinking water supply machine with a refrigerator for precooling and a cooling facility, the entire apparatus becomes large, requiring a large space and increasing the cost.

  Furthermore, when a conventional drinking water supply machine is provided with equipment that is not contaminated by bacteria or the like, there is a problem that the structure is complicated and the cost is increased. In addition, the conventional baggin box has a structure in which drinking water is discharged by its own weight. Therefore, it is difficult to reliably discharge all the drinking water in the drinking water bag enclosed in the flexible bag body. Although it depends on the size of the water bag, there is a problem that about one bottle (about 500 ml) of residual water remains and is wasted.

In addition, in the case of a method for cooling drinking water by blowing cold air between a box-shaped case and a flexible bag enclosing drinking water, equipment such as a blower is required and the box-shaped case There was a problem that the structure of was complicated.
JP 2008-37445 A JP 2003-206000 A JP 2004-352301 A

  The present invention pays attention to such conventional problems, and can immediately extract cooled drinking water cooled to an appropriate temperature (5 ° C. or less) in a short time immediately after replacing a drinking water bag, and further prevent contamination of bacteria and the like. It is an object of the present invention to provide a drinking water supply machine that can be manufactured at a low cost without having a complicated configuration even if equipment is provided.

  In order to achieve the above-mentioned object, the cooling means is formed in an evaporator chamber having a double structure of an outer shell plate and an inner shell plate formed of a metal material having high thermal conductivity, and the outer shell plate and A refrigerant passage communicating with the inner shell plate at the end portion of the inner shell plate is formed between the inner shell plate, an injection nozzle for injecting a refrigerant gas into the refrigerant passage is provided inside the inner shell plate of the evaporator chamber, and the evaporator The gist is that a recovery pipe for recovering the refrigerant gas is provided below the inner shell plate of the chamber, and the spray nozzle and the recovery pipe are connected to a refrigerant circulation device that circulates while purifying the refrigerant.

  Here, the tip of the injection nozzle is formed so that the refrigerant gas is uniformly injected from the top of the evaporator chamber into the refrigerant passage, and the cross-sectional shape of the evaporator chamber is formed in a substantially elliptical trapezoidal shape. is there. Further, the base plate is formed by inclining upward at a predetermined angle from the front of the drinking water supply machine to the rear, and a cooling means is provided on the base plate and a flexible bag body containing drinking water is accommodated. It is comprised so that the case which carried out may be mounted.

  Further, a temperature sensor for detecting the temperature of the refrigerant gas is provided inside the injection nozzle, and the refrigerant circulation device includes a refrigerant gas compressor to which a refrigerant gas circulation pipe is connected, and a condenser. To do. Further, the tip of the injection nozzle can be provided in a refrigerant passage on the front side of the drinking water supply machine so that the injected refrigerant flows through a refrigerant passage inclined rearward from the front surface of the drinking water supply machine. It is.

  In addition, the cooling means of the drinking water supply machine according to the present invention includes an evaporator chamber formed of a metal material having high thermal conductivity, and a plurality of inner wall surfaces of the evaporator chamber on the inner side of the evaporator chamber. A plurality of branched injection nozzles for uniformly injecting the refrigerant gas toward the location are provided, a recovery pipe for recovering the refrigerant gas is provided at the lower part of the inner shell plate of the evaporator chamber, and the refrigerant is connected to the injection nozzle and the recovery pipe. The gist of the invention is that it is connected to a refrigerant circulation device that circulates while purifying.

  Here, a cross-sectional shape of the evaporator chamber is formed in a substantially elliptical trapezoidal shape, or the base plate is formed by inclining upward at a predetermined angle from the front surface of the drinking water supply machine to the rear. It is also possible to provide a cooling means and to place a case containing a flexible bag enclosing drinking water.

  Further, a temperature sensor for detecting the temperature of the refrigerant gas is provided inside the injection nozzle, or the refrigerant circulation device is constituted by a refrigerant gas compressor to which a refrigerant gas circulation pipe is connected and a condenser. It is.

  According to the present invention, as described above, the cooling means is formed in an evaporator chamber having a double structure of an outer shell plate and an inner shell plate formed of a metal material having high thermal conductivity, and the outer shell plate and the inner shell. A refrigerant passage communicating with the end portion of the inner shell plate is formed between the plate and an injection nozzle for injecting a refrigerant gas into the refrigerant passage inside the inner shell plate of the evaporator chamber, and the evaporator chamber A recovery pipe for recovering the refrigerant gas is provided at the lower part of the inner shell plate, and the jet nozzle and the recovery pipe are connected to a refrigerant circulation device that circulates while purifying the refrigerant, so that the following excellent effects can be obtained. It is.

(1) Baggage boxes (BiB) can be easily replaced by women and women and elderly people. (2). Immediately after replacing the case containing the drinking water bag filled with drinking water, the lower surface of the drinking water bag is cooled by the cooling means, so that it is immediately cooled to an appropriate temperature (5 ° C or less). You can drink drinking water.
(3) The whole drinking water supply machine can be configured compactly and can be used effectively even in a small space.
(4). Since a facility for pre-cooling the case in which the drinking water bag is stored in advance is unnecessary, it is possible to design an inexpensive and compact design.
(5) Since the tank and equipment for storing and cooling the drinking water between the case containing the drinking water bag and the drinking water extraction port are not required, the entire feeder body is simple and compact. Can be configured.
(6) Even if it is equipped with anti-contamination equipment such as bacteria in the drinking water piping, it does not have a complicated structure, and can be manufactured in a compact and inexpensive manner.
(7) As drinking water, it can be applied not only to mineral waters but also to oolong tea, green tea, etc., and can be used effectively as versatile one.
(8) When the drinking water bag is replaced, the remaining amount of drinking water in the drinking water bag is small, so there is no waste, and the case containing the drinking water bag can be easily taken in and out.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a perspective view of the entire drinking water supply apparatus embodying the present invention, and FIG. 2 accommodates a drinking water main body 1, a cover 2 and a drinking water bag (not shown) filled with drinking water when the cover is removed. The perspective view which shows the relationship with case 3 (bagin box: cardboard box etc.) is shown, and about 10 liters of drinking water is enclosed with the flexible bag body 3a, such as a plastic bag, in the said box-shaped case 3. FIG. An extraction port 4 for extracting drinking water is attached to a part of the flexible bag 3a.

  As a first embodiment of the feeder main body 1, as shown in FIG. 3, a table portion 6 on which a container 5 such as a cup is placed when the cooling water W is extracted on the front side of the feeder main body 1 is integrated. The mounting surface 1a on the upper surface side of the feeder main body 1 is a box-like shape containing a drinking water bag in which a predetermined amount of drinking water W is enclosed in a flexible bag 3a such as polyethylene or a plastic bag. When the case 3 is placed, the table 6 on which the container 5 is placed, that is, the extraction port 4 is formed at a predetermined inclination angle α so as to face downward.

  In addition, a cooling means 7 for cooling the drinking water W in the flexible bag 3 a accommodated in the case 3 is installed on the placement surface 1 a on the upper surface side of the feeder main body 1. A housing portion 9 is integrally formed in the lower portion of the housing for housing a refrigerant circulating device 8 that circulates refrigerant such as Freon gas while purifying it.

  The cooling means 7 of the feeder main body 1 is an evaporator chamber (evaporator) formed on a base plate 10 such as stainless steel in a dome shape (substantially semicircular arc shape) having a thickness of about 2 mm made of a metal material having good thermal conductivity. 11 is airtightly arranged through a heat insulating material 12 such as urethane foam. The evaporator chamber 11 formed in the dome shape is formed in a double structure of an outer shell plate 11a and an inner shell plate 11b made of a metal material having high thermal conductivity (for example, aluminum, stainless steel, copper, etc.). In addition, a refrigerant passage 13 communicating with the end portion of the inner shell plate 11b is formed between the outer shell plate 11a and the inner shell plate 11b, and the central inner side of the inner shell plate 11b of the evaporator chamber 11 is formed. In addition, the refrigerant passage 13 has a predetermined pressure (for example, about 98 kPa to 490 kPa (1 kgf / cm 2 to 5 kgf / cm 2)) and a predetermined temperature (for example, around −20 ° C.). An injection nozzle 14 for injecting the refrigerant gas Q is provided.

  A recovery pipe 15 for recovering the refrigerant gas Q is provided below the inner shell plate 11b of the evaporator chamber 11, and the refrigerant circulation device 8 is connected to the injection nozzle 14 and the recovery pipe 15 via circulation pipes 17a and 17b. It is connected to the. The tip of the injection nozzle 14 is formed so that the refrigerant gas Q is uniformly injected from the top portion 11x of the evaporator chamber 11 into the refrigerant passage 13, and the refrigerant gas Q is uniformly distributed from the top portion 11x to the refrigerant passage 13. As a means for injecting, various methods such as providing a partition plate or providing a branch passage are conceivable.

  The cross-sectional shape of the evaporator chamber 11 is formed in a dome shape (substantially semicircular arc shape) or a substantially elliptical trapezoidal shape. However, the shape is not particularly limited, and the surface area of the evaporator chamber 11 is increased to reduce the refrigerant. The shape is not limited as long as the gas Q can be uniformly applied.

  Also, the flexible bag body accommodated in the box-shaped case 3 is formed by inclining the base plate 10 made of stainless steel or the like upward from the front surface of the feeder main body 1 at a predetermined angle α. The drinking water in 3a can be made to flow toward the extraction port 4 by its own weight, and all the drinking water in the flexible bag 3a can be used up.

  A temperature sensor 18 for detecting the temperature of the refrigerant gas Q is provided inside the injection nozzle 14, and a refrigerant gas compressor for the refrigerant gas Q is provided in the accommodating portion 9 that accommodates the refrigerant circulation device 8. 19 and a condenser 20 are disposed, and the temperature sensor 18 is connected to the condenser 20. Reference numeral 21 denotes a motor, and 22 denotes a microswitch.

  Further, an opening forming portion (not shown) through which the flexible bag 3a is exposed is formed on the bottom surface of the box-shaped case 3 in which a predetermined amount of drinking water W is sealed in the flexible bag 3a. The forming portion is provided with a cutting portion that can be cut by a perforation or the like on the bottom surface of the case 3 so that the cutting portion can be cut when the case 3 is installed, and the opening forming portion is formed at least in the dome shape (semi-arc shape). -It inserts on the chamber 11, The outer surface (upper surface) of the evaporator chamber 11 is a magnitude | size which can contact | adhere to the bottom face of the flexible bag 3a.

  Note that the opening forming portion of the case 3 is formed in advance on the bottom surface of the box-shaped case 3 or is cut when used.

  Further, the removable cover 2 covering the case 3 placed on the feeder main body 1 is a box so as to engage with a partition weir 23 formed around the cooling means 7 of the feeder main body 1. A substantially oval cutout 24 is provided on the front side of the cover 2 from which the extraction port 4 for drinking water W provided in a part of the flexible bag 3a protrudes. The cover 3 is formed of a colored transparent resin material or the like so that the cover 3 is excellent in appearance and aesthetic decoration when attached to the feeder main body 1.

  Next, FIG. 4 shows a second embodiment of the cooling means 7 of the feeder main body 1, and this embodiment has the same configuration as that of the first embodiment, and the tip of the injection nozzle 14 is connected to the feeder main body 1. The blower outlet 14a for the refrigerant passage 13 is provided on the front side of the base plate 10, that is, on the inclined lower side of the base plate 10, and the injected refrigerant Q is inclined from the front side (lower side) to the rear side (upper side) of the feeder body 1. The refrigerant passage 13 is configured to flow.

  By configuring in this way, the start-up of the cooling becomes faster and the temperature of the outer surface of the evaporator chamber 11 decreases more quickly, so that the drinking water W of the flexible bag 3a is also cooled to a constant temperature in a short time. I can do it. Since other configurations are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

  FIG. 5 shows a third embodiment of the cooling means 7 of the feeder main body 1. In this embodiment, in the configuration of the first embodiment, the cooling means 7 is made of a metal material having a high thermal conductivity and an evaporator. In addition to being formed by the chamber 11, a plurality of locations on the inner wall surface of the evaporator chamber 11 inside the center of the evaporator chamber 11 (in this embodiment, there are three locations, but this number can be further increased). A plurality of branched injection nozzles 14x for uniformly injecting the refrigerant gas Q toward the interior are provided, a recovery pipe 15 for recovering the refrigerant gas Q is provided below the inner shell plate 11b of the evaporator chamber 11, and the injection nozzle 14x The recovery pipe 15 is connected to a refrigerant circulation device 8 that circulates while purifying the refrigerant Q.

  As described above, since the plurality of branched injection nozzles 14x for uniformly injecting the refrigerant gas Q toward the plurality of locations on the inner wall surface of the evaporator chamber 11 are provided, the start-up of the cooling becomes faster and the outside of the evaporator chamber 11 is increased. Since the surface temperature decreases more quickly, the drinking water W of the flexible bag 3a can be cooled to a constant temperature in a short time.

  Since other configurations are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

Next, the usage method of the drinking water supply machine which consists of the above structures is demonstrated.
First, the flexible bag 3a in which the drinking water W is enclosed is accommodated on the outer shell plate 11a formed in the dome shape of the evaporator chamber 11 of the cooling means 7 in the feeder main body 1 with the cover 2 removed. When the box-shaped case 3 is placed, the opening forming portion formed on the bottom surface of the box-shaped case 3 is opened so that the flexible bag 3 is exposed.

  Then, the box-shaped opening forming portion is placed so as to cover the outer shell plate 11 a of the evaporator chamber 11 formed in a dome shape (semi-arc shape), and the flexible bag 3 a is placed outside the evaporator chamber 11. It is placed so as to be in contact with the outer surface of the shell plate 11a.

  On the other hand, since the refrigerant gas Q having a predetermined pressure at a predetermined temperature (for example, around −20 ° C.) supplied from the refrigerant circulation device 8 is blown to the inner wall surface of the evaporator chamber 11 by the injection nozzle 14, the evaporator The outer surface of the chamber 11 is also cooled to around −20 ° C., and it is possible to contact the flexible bag 3 a enclosing the above-described drinking water W on the cooled evaporator chamber 11. The drinking water W in the flexible bag 3a is gradually cooled from the contact surface side of the evaporator chamber 11, and in the embodiment of the present invention, 500 ml to 1 liter of drinking water is 5 ° C. in about 10 to 15 minutes. It is possible to extract the drinking water W that has been cooled to -10 ° C and about one cup of the cup 5 even immediately after installation.

  Further, since the base plate 10 made of stainless steel or the like of the cooling means 7 is also cooled to about −10 ° C. by cooling the evaporator chamber 11, the bottom surface side of the case 3 placed on the base plate 10 is also indirectly. It will be cooled down.

  If the drinking water W in the flexible bag 3a is not extracted from the extraction part 4, the temperature inside the flexible bag 3a is kept cooled to around 5 ° C and extracted. In this case, the evaporator chamber 11 is cooled to a constant temperature so that the set temperature is reached. In this temperature control, the temperature of the refrigerant gas Q (Freon gas) is always detected by a temperature sensor 18 disposed inside the injection nozzle 14, and the temperature control is performed by controlling the driving of the refrigerant gas compressor 19 and the condenser 20. It can be done easily.

  That is, when the liquid refrigerant is compressed and vaporized, the refrigerant gas Q is cooled by being blown onto the inner surface of the evaporator chamber 11, and the evaporator is detected by detecting the temperature of the blown refrigerant gas Q. -The cooling temperature of the chamber 11 is controlled. The refrigerant gas Q sprayed on the inner surface of the evaporator chamber 11 is recovered by the refrigerant gas compressor 19 and the condenser 20 via the recovery pipe 15 and the circulation pipe 17b, and is reused again.

  As described above, according to the present invention, the case 3 (bagin box) is brought into direct contact with the bottom side of the flexible bag 3a enclosing the drinking water W in the evaporator chamber 11 cooled to a constant temperature. Cooled drinking water cooled to an appropriate temperature (5 ° C or less) can be extracted immediately after replacement, and the device is compact and has a simple structure, with a small remaining amount, and can be manufactured at low cost. It is. Further, since it is not necessary to provide anti-contamination equipment such as bacteria, it can be manufactured at a low cost without a complicated configuration.

It is a perspective view of the whole drinking water supply machine which implemented this invention. It is a perspective view which shows the relationship between the case which accommodated the drinking water bag which enclosed the supply machine main body, cover, and drinking water when the cover was removed. It is sectional drawing of the cooling means of the feeder main body which shows 1st Embodiment of this invention. It is sectional drawing of the cooling means of the feeder main body which shows 2nd Embodiment of this invention. It is sectional drawing of the cooling means of the feeder main body which shows 3rd Embodiment of this invention.

Explanation of symbols

1 Supply machine body 1a Placement surface 2 Cover 3 Case (bagin box: cardboard box, etc.)
3a Flexible bag 4 Extraction port 5 Container 6 Table part 7 Cooling means 8 Refrigerant circulation device 9 Storage part 10 Base plate 11 Evaporator chamber (evaporator)
11a outer shell plate 11b inner shell plate 11x top 12 heat insulating material 13 refrigerant passage 14 injection nozzle 15 recovery pipe 17a, 17b circulation pipe 18 refrigerant circulation device 19 refrigerant gas compressor 20 condenser 21 motor 22 microswitch 23 partition weir 24 notch Q Refrigerant gas W Drinking water

Claims (12)

  The flexible bag containing the drinking water is brought into direct contact with the cooling part of the cooling means installed on the base plate, the drinking water in the flexible bag is cooled to a constant temperature, and the cooled drinking water is flexible. In a drinking water supply apparatus configured to be extracted from an extraction port provided in a part of a bag body, the cooling means includes an outer shell plate and an inner shell plate formed of a metal material having high thermal conductivity. In addition to forming the evaporator chamber with a heavy structure, a refrigerant passage communicating between the outer shell plate and the inner shell plate at the end portion of the inner shell plate is formed, and the center of the inner shell plate of the evaporator chamber is formed inside. An injection nozzle for injecting refrigerant gas is provided in the refrigerant passage, a recovery pipe for recovering the refrigerant gas is provided below the inner shell plate of the evaporator chamber, and the injection nozzle and the recovery pipe are circulated while purifying the refrigerant. Refrigerant circulation device Drinking water supply device, characterized in that connected.   The drinking water supply machine according to claim 1, wherein the tip of the injection nozzle is formed so that the refrigerant gas is uniformly injected from the top of the evaporator chamber into the refrigerant passage.   The drinking water supply machine according to claim 1 or 2, wherein a cross-sectional shape of the evaporator chamber is formed in a substantially elliptical trapezoidal shape.   A case in which the base plate is formed by inclining upward at a predetermined angle from the front of the drinking water supply machine to the rear, and a cooling bag is provided on the base plate and a flexible bag body containing drinking water is accommodated. The drinking water supply machine according to claim 1, 2 or 3, wherein the drinking water is configured to be placed.   The drinking water supply machine according to claim 1, 2, 3, or 4, wherein a temperature sensor for detecting the temperature of the refrigerant gas is provided inside the injection nozzle.   The drinking water supply device according to claim 1, 2, 3, 4 or 5, wherein the refrigerant circulation device includes a refrigerant gas compressor to which a refrigerant gas circulation pipe is connected and a condenser.   The tip of the injection nozzle is provided in a refrigerant passage on the front side of the drinking water supply machine, and the injected refrigerant is configured to flow through a refrigerant passage inclined backward from the front surface of the drinking water supply machine. The drinking water supply machine according to 2, 3, 4, 5 or 6.   The flexible bag containing the drinking water is brought into direct contact with the cooling part of the cooling means installed on the base plate, the drinking water in the flexible bag is cooled to a constant temperature, and the cooled drinking water is flexible. In the drinking water supply apparatus configured to be extracted from an extraction port provided in a part of a bag body, the cooling means forms an evaporator chamber with a metal material having high thermal conductivity, and the evaporator chamber A plurality of branched injection nozzles for uniformly injecting the refrigerant gas toward a plurality of locations on the inner wall surface of the evaporator chamber are provided inside the center of the evaporator chamber, and the refrigerant gas is recovered at the lower part of the inner shell plate of the evaporator chamber. A drinking water supply machine characterized in that a pipe is provided and is connected to a refrigerant circulation device for circulating the jet nozzle and the recovery pipe while purifying the refrigerant.   The drinking water supply machine according to claim 8, wherein a cross-sectional shape of the evaporator chamber is formed in a substantially elliptical trapezoidal shape.   A case in which the base plate is formed by inclining upward at a predetermined angle from the front of the drinking water supply machine to the rear, and a cooling bag is provided on the base plate and a flexible bag body containing drinking water is accommodated. 10. The drinking water supply machine according to claim 8 or 9, wherein the drinking water supply device is configured to place the food.   The drinking water supply machine according to claim 8, 9 or 10, wherein a temperature sensor for detecting the temperature of the refrigerant gas is provided inside the injection nozzle.   The drinking water supply machine according to claim 8, 9, 10 or 11, wherein the refrigerant circulation device is constituted by a refrigerant gas compressor to which a refrigerant gas circulation pipe is connected and a condenser.

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